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Mechanisms underlying the laxative effect of lactulose: A randomized placebo‐controlled trial showing increased small bowel water and motility unaltered by the 5‐HT3 receptor antagonist, ondansetron (2024)
Journal Article
Gunn, D., Yeldho, C., Hoad, C., Menys, A., Gowland, P., Marciani, L., & Spiller, R. (in press). Mechanisms underlying the laxative effect of lactulose: A randomized placebo‐controlled trial showing increased small bowel water and motility unaltered by the 5‐HT3 receptor antagonist, ondansetron. Neurogastroenterology and Motility, https://doi.org/10.1111/nmo.14754

Background: Lactulose is a laxative which accelerates transit and softens stool. Our aim was to investigate its mechanism of action and use this model of diarrhea to investigate the anti-diarrheal actions of ondansetron. Methods: A double-blind, ra... Read More about Mechanisms underlying the laxative effect of lactulose: A randomized placebo‐controlled trial showing increased small bowel water and motility unaltered by the 5‐HT3 receptor antagonist, ondansetron.

Colon length in pediatric health and constipation measured using magnetic resonance imaging and three dimensional skeletonization (2024)
Journal Article
Sharif, H., Hoad, C. L., Abrehart, N., Gowland, P. A., Spiller, R. C., Kirkham, S., …Marciani, L. (2024). Colon length in pediatric health and constipation measured using magnetic resonance imaging and three dimensional skeletonization. PLoS ONE, 19(1), Article e0296311. https://doi.org/10.1371/journal.pone.0296311

Recent magnetic resonance imaging (MRI) studies showed that colonic volumes in children are different between health and functional constipation. The length of the colon has however been rarely measured and principally using unphysiological colon pre... Read More about Colon length in pediatric health and constipation measured using magnetic resonance imaging and three dimensional skeletonization.

A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes. (2023)
Journal Article
Ng, C., Dellschaft, N. S., Hoad, C., Marciani, L., Spiller, R., Crooks, C., …Smyth, A. R. (2023). A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes. NIHR Open Research, 3(65), 1-16. https://doi.org/10.3310/nihropenres.13510.1

Background People with cystic fibrosis (CF) can experience recurrent chest infections, pancreatic exocrine insufficiency and gastrointestinal symptoms. New cystic fibrosis transmembrane conductance regulator (CFTR) modulator drugs improve lung fun... Read More about A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes..

In vivo observation of a stomach road or ‘Magenstrasse’ for gastric emptying using MRI imaging in healthy humans (2023)
Journal Article
Almutairi, F., Alyami, J., Pritchard, S., Alsharef, W., Spiller, R. C., Gowland, P. A., …Hoad, C. L. (2023). In vivo observation of a stomach road or ‘Magenstrasse’ for gastric emptying using MRI imaging in healthy humans. Clinical Nutrition Open Science, 51, 35-43. https://doi.org/10.1016/j.nutos.2023.08.002

The presence of a ‘magenstrasse’, a central ‘stomach road’ for flow and mixing of foods and drinks in the stomach had been predicted from hydrodynamic modelling. Here a magnetic resonance imaging (MRI) tagging technique was used to gain novel insight... Read More about In vivo observation of a stomach road or ‘Magenstrasse’ for gastric emptying using MRI imaging in healthy humans.

Thinking outside the box: a review of gastrointestinal symptoms and complications in cystic fibrosis (2023)
Journal Article
Yule, A., Sills, D., Smith, S., Spiller, R., & Smyth, A. R. (2023). Thinking outside the box: a review of gastrointestinal symptoms and complications in cystic fibrosis. Expert Review of Respiratory Medicine, 17(7), 547-561. https://doi.org/10.1080/17476348.2023.2228194

Introduction Gastrointestinal (GI)-related symptoms, complications, and comorbidities in cystic fibrosis (CF) are common and research to reduce their burden is a priority for the CF community. To enable future research, this review aimed to summariz... Read More about Thinking outside the box: a review of gastrointestinal symptoms and complications in cystic fibrosis.

MRI tagging of colonic chyme mixing in healthy subjects: Inter‐observer variability and reliability of the measurement with time (2023)
Journal Article
Alshammari, M. T., Alyami, A. S., Wilkinson-Smith, V., Spiller, R. C., Gowland, P., Marciani, L., …Hoad, C. L. (2023). MRI tagging of colonic chyme mixing in healthy subjects: Inter‐observer variability and reliability of the measurement with time. Neurogastroenterology and Motility, 35(8), Article e14610. https://doi.org/10.1111/nmo.14610

Background: Magnetic resonance imaging (MRI) tagging techniques have been applied to the GI tract to assess bowel contractions and content mixing. We aimed to evaluate the dependence of a tagging measurement (for assessing chyme mixing) on inter-obse... Read More about MRI tagging of colonic chyme mixing in healthy subjects: Inter‐observer variability and reliability of the measurement with time.

Randomised, placebo-controlled trial and meta-analysis show benefit of ondansetron for irritable bowel syndrome with diarrhoea: The TRITON trial (2023)
Journal Article
Gunn, D., Topan, R., Barnard, L., Fried, R., Holloway, I., Brindle, R., …Spiller, R. (2023). Randomised, placebo-controlled trial and meta-analysis show benefit of ondansetron for irritable bowel syndrome with diarrhoea: The TRITON trial. Alimentary Pharmacology and Therapeutics, 57(11), 1258-1271. https://doi.org/10.1111/apt.17426

Summary: Background: Ondansetron may be beneficial in irritable bowel syndrome with diarrhoea (IBS‐D). Aim: To conduct a 12‐week parallel group, randomised, double‐blind, placebo‐controlled trial of ondansetron 4 mg o.d. (titrated up to 8 mg t.d.s.)... Read More about Randomised, placebo-controlled trial and meta-analysis show benefit of ondansetron for irritable bowel syndrome with diarrhoea: The TRITON trial.

Postinfective bowel dysfunction following Campylobacter enteritis is characterised by reduced microbiota diversity and impaired microbiota recovery (2022)
Journal Article
Jalanka, J., Gunn, D., Singh, G., Krishnasamy, S., Lingaya, M., Crispie, F., …Spiller, R. C. (2022). Postinfective bowel dysfunction following Campylobacter enteritis is characterised by reduced microbiota diversity and impaired microbiota recovery. Gut, https://doi.org/10.1136/gutjnl-2021-326828

Objectives: Persistent bowel dysfunction following gastroenteritis (postinfectious (PI)-BD) is well recognised, but the associated changes in microbiota remain unclear. Our aim was to define these changes after gastroenteritis caused by a single orga... Read More about Postinfective bowel dysfunction following Campylobacter enteritis is characterised by reduced microbiota diversity and impaired microbiota recovery.

The serotonin receptor 3E variant is a risk factor for female IBS-D (2022)
Journal Article
Fritz, N., Berens, S., Dong, Y., Martínez, C., Schmitteckert, S., Houghton, L. A., …Niesler, B. (2022). The serotonin receptor 3E variant is a risk factor for female IBS-D. Journal of Molecular Medicine, 100, 1617–1627. https://doi.org/10.1007/s00109-022-02244-w

Irritable bowel syndrome (IBS) is a gut-brain disorder of multifactorial origin. Evidence of disturbed serotonergic function in IBS accumulated for the 5-HT3 receptor family. 5-HT3Rs are encoded by HTR3 genes and control GI function, and peristalsis... Read More about The serotonin receptor 3E variant is a risk factor for female IBS-D.

Application of In Vivo MRI Imaging to Track a Coated Capsule and Its Disintegration in the Gastrointestinal Tract in Human Volunteers (2022)
Journal Article
Sulaiman, S., Gershkovich, P., Hoad, C. L., Calladine, M., Spiller, R. C., Stolnik, S., & Marciani, L. (2022). Application of In Vivo MRI Imaging to Track a Coated Capsule and Its Disintegration in the Gastrointestinal Tract in Human Volunteers. Pharmaceutics, 14(2), Article 270. https://doi.org/10.3390/pharmaceutics14020270

Oral specially coated formulations have the potential to improve treatment outcomes of a range of diseases in distal intestinal tract whilst limiting systemic drug absorption and adverse effects. Their development is challenging, partly because of li... Read More about Application of In Vivo MRI Imaging to Track a Coated Capsule and Its Disintegration in the Gastrointestinal Tract in Human Volunteers.

Genome-wide analysis of 53,400 people with irritable bowel syndrome highlights shared genetic pathways with mood and anxiety disorders (2021)
Journal Article
Eijsbouts, C., Zheng, T., Kennedy, N. A., Bonfiglio, F., Anderson, C. A., Moutsianas, L., …Parkes, M. (2021). Genome-wide analysis of 53,400 people with irritable bowel syndrome highlights shared genetic pathways with mood and anxiety disorders. Nature Genetics, 53(11), 1543-1552. https://doi.org/10.1038/s41588-021-00950-8

Irritable bowel syndrome (IBS) results from disordered brain–gut interactions. Identifying susceptibility genes could highlight the underlying pathophysiological mechanisms. We designed a digestive health questionnaire for UK Biobank and combined ide... Read More about Genome-wide analysis of 53,400 people with irritable bowel syndrome highlights shared genetic pathways with mood and anxiety disorders.

Small bowel water content assessed by MRI in health and disease: a collation of single-centre studies (2021)
Journal Article
Dellschaft, N., Hoad, C., Marciani, L., Gowland, P., & Spiller, R. (2022). Small bowel water content assessed by MRI in health and disease: a collation of single-centre studies. Alimentary Pharmacology and Therapeutics, 55(3), 327-338. https://doi.org/10.1111/apt.16673

Background: New developments in MRI have allowed the non-invasive, accurate measurement of the small bowel water content (SBWC). Aims: To collate studies measuring SBWC following ingestion of a range of foods in both health and disease to provide dat... Read More about Small bowel water content assessed by MRI in health and disease: a collation of single-centre studies.

Psyllium reduces insulin-induced colonic gas production in irritable bowel syndrome: MRI and in vitro fermentation studies (2021)
Journal Article
Gunn, D., Abbas, Z., Harris, H., Major, G., Hoad, C., Gowland, P., …Spiller, R. (2022). Psyllium reduces insulin-induced colonic gas production in irritable bowel syndrome: MRI and in vitro fermentation studies. Gut, 71(5), 919-927. https://doi.org/10.1136/gutjnl-2021-324784

Objective: Health promoting dietary fibre including inulin often triggers gastrointestinal symptoms in patients with irritable bowel syndrome (IBS), limiting their intake. Our aim was to test if co-administering psyllium with inulin would reduce gas... Read More about Psyllium reduces insulin-induced colonic gas production in irritable bowel syndrome: MRI and in vitro fermentation studies.

The alternative serotonin transporter promoter P2 impacts gene function in females with irritable bowel syndrome (2021)
Journal Article
Mohr, S., Fritz, N., Hammer, C., Martínez, C., Berens, S., Schmitteckert, S., …Niesler, B. (2021). The alternative serotonin transporter promoter P2 impacts gene function in females with irritable bowel syndrome. Journal of Cellular and Molecular Medicine, 25(16), 8047-8061. https://doi.org/10.1111/jcmm.16736

Irritable bowel syndrome (IBS) is a gut-brain disorder in which symptoms are shaped by serotonin acting centrally and peripherally. The serotonin transporter gene SLC6A4 has been implicated in IBS pathophysiology, but the underlying genetic mechanism... Read More about The alternative serotonin transporter promoter P2 impacts gene function in females with irritable bowel syndrome.

Postprandial changes in gastrointestinal function and transit in cystic fibrosis assessed by Magnetic Resonance Imaging (2021)
Journal Article
Ng, C., Dellschaft, N. S., Hoad, C. L., Marciani, L., Ban, L., Prayle, A. P., …Smyth, A. R. (2021). Postprandial changes in gastrointestinal function and transit in cystic fibrosis assessed by Magnetic Resonance Imaging. Journal of Cystic Fibrosis, 20(4), 591-597. https://doi.org/10.1016/j.jcf.2020.06.004

Background: Cystic fibrosis (CF) is a multi-system genetic disorder affecting >72,000 people worldwide. Most CF patients experience gastrointestinal symptoms and can develop complications. However, the mechanisms of CF gut disease are not well unders... Read More about Postprandial changes in gastrointestinal function and transit in cystic fibrosis assessed by Magnetic Resonance Imaging.

Colonic Volume Changes in Paediatric Constipation Compared to Normal Values Measured Using MRI (2021)
Journal Article
Sharif, H., Hoad, C. L., Abrehart, N., Gowland, P. A., Spiller, R. C., Kirkham, S., …Marciani, L. (2021). Colonic Volume Changes in Paediatric Constipation Compared to Normal Values Measured Using MRI. Diagnostics, 11(6), Article 974. https://doi.org/10.3390/diagnostics11060974

Background: Functional constipation in children is common. Management of this condition can be challenging and is often based on symptom reports. Increased, objective knowledge of colonic volume changes in constipation compared to health could provid... Read More about Colonic Volume Changes in Paediatric Constipation Compared to Normal Values Measured Using MRI.

Colonic gene expression and fecal microbiota in diarrhea-predominant irritable bowel syndrome: Increased toll-like receptor 4 but minimal inflammation and no response to mesalazine (2021)
Journal Article
Jalanka, J., Lam, C., Bennett, A., Hartikainen, A., Crispie, F., Finnegan, L. A., …Spiller, R. (2021). Colonic gene expression and fecal microbiota in diarrhea-predominant irritable bowel syndrome: Increased toll-like receptor 4 but minimal inflammation and no response to mesalazine. Journal of Neurogastroenterology and Motility, 27(2), 279-291. https://doi.org/10.5056/JNM20205

Background/Aims Diarrhea-predominant irritable bowel syndrome (IBS-D) has been previously associated with evidence of immune activation and altered microbiota. Our aim is to assess the effect of the anti-inflammatory agent, mesalazine, on inflammator... Read More about Colonic gene expression and fecal microbiota in diarrhea-predominant irritable bowel syndrome: Increased toll-like receptor 4 but minimal inflammation and no response to mesalazine.

Pain severity correlates with biopsy mediated colonic afferent activation but not psychological scores in IBS-D patients (2021)
Journal Article
Cibert-Goton, V., Lam, C., Lingaya, M., Falcone, Y., Wood, J. N., Bulmer, D. C., & Spiller, R. (2021). Pain severity correlates with biopsy mediated colonic afferent activation but not psychological scores in IBS-D patients. Clinical and Translational Gastroenterology, 12(2), Article e00313. https://doi.org/10.14309/ctg.0000000000000313

Objectives: Despite heterogeneity an increased prevalence of psychological co-morbidity and an altered pro-nociceptive gut microenvironment have repeatedly emerged as causative pathophysiology in patients with irritable bowel syndrome(IBS). Our aim w... Read More about Pain severity correlates with biopsy mediated colonic afferent activation but not psychological scores in IBS-D patients.

Chronic constipation in adults: Contemporary perspectives and clinical challenges. 2: Conservative, behavioural, medical and surgical treatment (2021)
Journal Article
Corsetti, M., Brown, S., Chiarioni, G., Dimidi, E., Dudding, T., Emmanuel, A., …Scott, S. M. (2021). Chronic constipation in adults: Contemporary perspectives and clinical challenges. 2: Conservative, behavioural, medical and surgical treatment. Neurogastroenterology and Motility, 33(7), Article e14070. https://doi.org/10.1111/nmo.14070

Background: Chronic constipation is a prevalent disorder that affects quality of life of patients and consumes resources in healthcare systems worldwide. In clinical practice, it is still considered a challenge as clinicians frequently are unsure as... Read More about Chronic constipation in adults: Contemporary perspectives and clinical challenges. 2: Conservative, behavioural, medical and surgical treatment.

MR Measures of Small Bowel Wall T2 Are Associated With Increased Permeability (2020)
Journal Article
Scott, R. A., Williams, H. G., Hoad, C. L., Alyami, A., Ortori, C. A., Grove, J. I., …Gowland, P. A. (2021). MR Measures of Small Bowel Wall T2 Are Associated With Increased Permeability. Journal of Magnetic Resonance Imaging, 53(5), 1422-1431. https://doi.org/10.1002/jmri.27463

Background: Increased small bowel permeability leads to bacterial translocation, associated with significant morbidity and mortality. Biomarkers are needed to evaluate these changes in vivo, stratify an individual's risk, and evaluate the efficacy of... Read More about MR Measures of Small Bowel Wall T2 Are Associated With Increased Permeability.

Measurement of fasted state gastric antral motility before and after a standard bioavailability and bioequivalence 240 mL drink of water: Validation of MRI method against concomitant perfused manometry in healthy participants (2020)
Journal Article
Heissam, K., Abrehart, N., Hoad, C. L., Wright, J., Menys, A., Murray, K., …Marciani, L. (2020). Measurement of fasted state gastric antral motility before and after a standard bioavailability and bioequivalence 240 mL drink of water: Validation of MRI method against concomitant perfused manometry in healthy participants. PLoS ONE, 15(11), e0241441. https://doi.org/10.1371/journal.pone.0241441

Objective The gastrointestinal environment in which drug products need to disintegrate before the drug can dissolve and be absorbed has not been studied in detail due to limitations, especially invasiveness of existing techniques. Minimal in vivo dat... Read More about Measurement of fasted state gastric antral motility before and after a standard bioavailability and bioequivalence 240 mL drink of water: Validation of MRI method against concomitant perfused manometry in healthy participants.

Feasibility Study of a New MRI Mini-Capsule Device to Measure Whole Gut Transit Time in Pediatric Constipation (2020)
Journal Article
Sharif, H., Abrehart, N., Hoad, C., Murray, K., Perkins, A., Smith, M., …Marciani, L. (2020). Feasibility Study of a New MRI Mini-Capsule Device to Measure Whole Gut Transit Time in Pediatric Constipation. Journal of Pediatric Gastroenterology and Nutrition, 71(5), 604-611. https://doi.org/10.1097/MPG.0000000000002910

Objective: In England, 27,500 children are referred annually to hospital with constipation. An objective measure of whole gut transit time (WGTT) could aid management. The current standard WGTT assessment, the X-ray radiopaque marker (ROM) test, give... Read More about Feasibility Study of a New MRI Mini-Capsule Device to Measure Whole Gut Transit Time in Pediatric Constipation.

Processing Apples to Puree or Juice Speeds Gastric Emptying and Reduces Postprandial Intestinal Volumes and Satiety in Healthy Adults (2020)
Journal Article
Krishnasamy, S., Lomer, M. C. E., Marciani, L., Hoad, C. L., Pritchard, S. E., Paul, J., …Spiller, R. C. (2020). Processing Apples to Puree or Juice Speeds Gastric Emptying and Reduces Postprandial Intestinal Volumes and Satiety in Healthy Adults. Journal of Nutrition, 150(11), 2890-2899. https://doi.org/10.1093/jn/nxaa191

Background: Whole apples produce greater satiety than processed apples, but the underlying mechanisms remain unclear. Objective: Our aim was to assess the intragastric processing of apple preparations and the associated small and large bowel conten... Read More about Processing Apples to Puree or Juice Speeds Gastric Emptying and Reduces Postprandial Intestinal Volumes and Satiety in Healthy Adults.

The MRI colonic function test: Reproducibility of the Macrogol stimulus challenge (2020)
Journal Article
Wilkinson-Smith, V., Menys, A., Bradley, C., Corsetti, M., Marciani, L., Atkinson, D., …Hoad, C. (2020). The MRI colonic function test: Reproducibility of the Macrogol stimulus challenge. Neurogastroenterology and Motility, 32(11), Article e13942. https://doi.org/10.1111/nmo.13942

Background Magnetic resonance imaging (MRI) of the colonic response to a macrogol challenge drink can be used to assess the mechanisms underlying severe constipation. We measured the intra-subject reproducibility of MRI measures of colonic funct... Read More about The MRI colonic function test: Reproducibility of the Macrogol stimulus challenge.

Contrasting effects of viscous and particulate fibers on colonic fermentation in vitro and in vivo, and their impact on intestinal water studied by MRI in a randomized trial (2020)
Journal Article
Gunn, D., Murthy, R., Major, G., Wilkinson-Smith, V., Hoad, C., Marciani, L., …Spiller, R. (2020). Contrasting effects of viscous and particulate fibers on colonic fermentation in vitro and in vivo, and their impact on intestinal water studied by MRI in a randomized trial. American Journal of Clinical Nutrition, 112(3), 595–602. https://doi.org/10.1093/ajcn/nqaa173

Background Wheat bran, nopal, and psyllium are examples of particulate, viscous and particulate, and viscous fibers, respectively, with laxative properties yet contrasting fermentability. Objectives We assessed the fermentability of these fi... Read More about Contrasting effects of viscous and particulate fibers on colonic fermentation in vitro and in vivo, and their impact on intestinal water studied by MRI in a randomized trial.

Simultaneous measurement of gastric emptying of a soup test meal using MRI and gamma scintigraphy (2020)
Journal Article
Khalaf, A., Hoad, C. L., Blackshaw, E., Alyami, J., Spiller, R. C., Gowland, P. A., …Marciani, L. (2020). Simultaneous measurement of gastric emptying of a soup test meal using MRI and gamma scintigraphy. Diagnostics, 10(3), Article 170. https://doi.org/10.3390/diagnostics10030170

Measurement of gastric emptying is of clinical value for a range of conditions. Gamma scintigraphy (GS) has an established role, but the use of magnetic resonance imaging (MRI) has recently increased. Previous comparison studies between MRI and GS sh... Read More about Simultaneous measurement of gastric emptying of a soup test meal using MRI and gamma scintigraphy.

Gastrointestinal peptides and small bowel hypomotility are possible causes for fasting and postprandial symptoms in active Crohn’s disease (2019)
Journal Article
Khalaf, A., Hoad, C. L., Menys, A., Nowak, A., Radford, S., Taylor, S. A., …Moran, G. W. (2020). Gastrointestinal peptides and small bowel hypomotility are possible causes for fasting and postprandial symptoms in active Crohn’s disease. American Journal of Clinical Nutrition, 111(1), 131–140. https://doi.org/10.1093/ajcn/nqz240

Background Crohn's disease (CD) patients suffer postprandial aversive symptoms, which can lead to anorexia and malnutrition. Changes in the regulation of gut hormones and gut dysmotility are believed to play a role. Objectives This study aimed t... Read More about Gastrointestinal peptides and small bowel hypomotility are possible causes for fasting and postprandial symptoms in active Crohn’s disease.

Editorial: understanding differences in patient response to ondansetron in irritable bowel syndrome with diarrhoea-are we any closer? Authors' reply (2019)
Journal Article
Gunn, D., Garsed, K., Lam, C., Singh, G., Lingaya, M., Wahl, V., …Spiller, R. (2019). Editorial: understanding differences in patient response to ondansetron in irritable bowel syndrome with diarrhoea-are we any closer? Authors' reply. Alimentary Pharmacology and Therapeutics, 50(7), 826-827. https://doi.org/10.1111/apt.15465

Treatment of Irritable Bowel Syndrome with diarrhoea using Titrated Ondansetron (TRITON): study protocol for a randomised control trial (2019)
Journal Article
Gunn, D., Fried, R., Lalani, R., Farrin, A., Holloway, I., Morris, T., …Spiller, R. (2019). Treatment of Irritable Bowel Syndrome with diarrhoea using Titrated Ondansetron (TRITON): study protocol for a randomised control trial. Trials, 20, Article 517. https://doi.org/10.1186/s13063-019-3562-6

Background – Irritable bowel syndrome with diarrhoea (IBS-D) affects up to 4% of the general population. Symptoms include frequent, loose, or watery stools with associated urgency, resulting in marked reduction of quality of life and loss of work pro... Read More about Treatment of Irritable Bowel Syndrome with diarrhoea using Titrated Ondansetron (TRITON): study protocol for a randomised control trial.

Glycemic, Gastrointestinal, Hormonal and Appetitive Responses to Pearl Millet or Oats Porridge Breakfasts: a Randomized, Crossover Trial in Healthy Humans (2019)
Journal Article
Alyami, J., Whitehouse, E., Yakubov, G. E., Pritchard, S. E., Hoad, C. L., Blackshaw, E., …Marciani, L. (2019). Glycemic, Gastrointestinal, Hormonal and Appetitive Responses to Pearl Millet or Oats Porridge Breakfasts: a Randomized, Crossover Trial in Healthy Humans. British Journal of Nutrition, https://doi.org/10.1017/S0007114519001880

Whole grain cereal breakfast consumption has been associated with beneficial effects on glucose and insulin metabolism as well as satiety. Pearl millet is a popular ancient grain variety that can be grown in hot, dry regions. However, little is known... Read More about Glycemic, Gastrointestinal, Hormonal and Appetitive Responses to Pearl Millet or Oats Porridge Breakfasts: a Randomized, Crossover Trial in Healthy Humans.

Abnormalities of mucosal serotonin metabolism and 5-HT3 receptor subunit 3C polymorphism in irritable bowel syndrome with diarrhoea predict responsiveness to ondansetron (2019)
Journal Article
Gunn, D., Garsed, K., Lam, C., Singh, G., Lingaya, M., Wahl, V., …Spiller, R. (2019). Abnormalities of mucosal serotonin metabolism and 5-HT3 receptor subunit 3C polymorphism in irritable bowel syndrome with diarrhoea predict responsiveness to ondansetron. Alimentary Pharmacology and Therapeutics, 50(5), 538-546. https://doi.org/10.1111/apt.15420

Background Irritable bowel syndrome with diarrhoea (IBS‐D) is a common condition, greatly reducing the quality of life with few effective treatment options available. Aims To report the beneficial response shown in our trial with the 5‐hydroyxtr... Read More about Abnormalities of mucosal serotonin metabolism and 5-HT3 receptor subunit 3C polymorphism in irritable bowel syndrome with diarrhoea predict responsiveness to ondansetron.

First translational consensus on terminology and definitions of colonic motility in animals and humans studied by manometric and other techniques (2019)
Journal Article
Corsetti, M., Costa, M., Bassotti, G., Bharucha, A. E., Borrelli, O., Dinning, P., …Tack, J. (2019). First translational consensus on terminology and definitions of colonic motility in animals and humans studied by manometric and other techniques. Nature Reviews Gastroenterology and Hepatology, 16(9), 559-579. https://doi.org/10.1038/s41575-019-0167-1

Alterations in colonic motility are implicated in the pathophysiology of bowel disorders, but high-resolution manometry of human colonic motor function has revealed that our knowledge of normal motor patterns is limited. Furthermore, various terminol... Read More about First translational consensus on terminology and definitions of colonic motility in animals and humans studied by manometric and other techniques.

Increased fasting small-bowel water content in untreated coeliac disease and scleroderma as assessed by magnetic resonance imaging (2019)
Journal Article
Lam, C., Sanders, D., Lanyon, P., Garsed, K., Foley, S., Pritchard, S., …Spiller, R. (2019). Increased fasting small-bowel water content in untreated coeliac disease and scleroderma as assessed by magnetic resonance imaging. United European Gastroenterology Journal, 7(10), 1353-1360. https://doi.org/10.1177/2050640619860372

Background and aims: The regular overnight migrating motor complex (MMC) ensures that the normal fasting small bowel water content (SBWC) is minimised. We have applied our recently validated non-invasive magnetic resonance technique to assess SBWC... Read More about Increased fasting small-bowel water content in untreated coeliac disease and scleroderma as assessed by magnetic resonance imaging.

Enhancing our understanding of small bowel function using modern imaging techniques (2019)
Journal Article
Hoad, C., & Spiller, R. (2020). Enhancing our understanding of small bowel function using modern imaging techniques. Neurogastroenterology and Motility, 32(1), https://doi.org/10.1111/nmo.13616

Small intestinal function is critical to digestive health and patients believe an abnormal reaction to food is responsible for many of their symptoms. Despite this, our ability to assess disturbed function in clinical practice has been limited, parti... Read More about Enhancing our understanding of small bowel function using modern imaging techniques.

A pilot study of visceral fat and its association with adipokines, stool calprotectin and symptoms in patients with diverticulosis (2019)
Journal Article
Murray, K., Hoad, C., Garratt, J., Kaviani, M., Marciani, L., Smith, J., …Spiller, R. (2019). A pilot study of visceral fat and its association with adipokines, stool calprotectin and symptoms in patients with diverticulosis. PLoS ONE, 14(5), Article e0216528. https://doi.org/10.1371/journal.pone.0216528

Background Complications of diverticular disease are increasingly common, possibly linked to increasing obesity. Visceral fat could contribute to the development of symptomatic diverticular disease through its pro-inflammatory effects. Objective... Read More about A pilot study of visceral fat and its association with adipokines, stool calprotectin and symptoms in patients with diverticulosis.

Intraluminal impact of food: New insights from MRI (2019)
Journal Article
Marciani, L., & Spiller, R. (2019). Intraluminal impact of food: New insights from MRI. Nutrients, 11(5), Article 1147. https://doi.org/10.3390/nu11051147

© 2019 by the authors. Licensee MDPI, Basel, Switzerland. Understanding how the gut responds to food has always been limited by the available investigatory techniques. Previous methods involving intubation and aspiration are largely limited to liquid... Read More about Intraluminal impact of food: New insights from MRI.

Spatio-Temporal Motility MRI analysis of the stomach and colon (2019)
Journal Article
Menys, A., Hoad, C., Spiller, R., Scott, M., Atkinson, D., Marciani, L., & Taylor, S. (2019). Spatio-Temporal Motility MRI analysis of the stomach and colon. Neurogastroenterology and Motility, 31(5), Article e13557. https://doi.org/10.1111/nmo.13557

Background: MRI is increasingly used to objectively assess gastrointestinal motility. However, motility metrics often do no not offer insights into the nature of contractile action. This study introduces a systematic method of making spatiotemporal m... Read More about Spatio-Temporal Motility MRI analysis of the stomach and colon.

Spatio-Temporal Motility MRI (STMM) analysis of the stomach and colon (2019)
Journal Article
Menys, A., Hoad, C., Spiller, R., Scott, M., Atkinson, D., Marciani, L., & Taylor, S. (2019). Spatio-Temporal Motility MRI (STMM) analysis of the stomach and colon. Neurogastroenterology and Motility, 31(5), https://doi.org/10.1111/nmo.13557

Background: MRI is increasingly used to objectively assess gastrointestinal motility. However, motility metrics often do no not offer insights into the nature of contractile action. This study introduces a systematic method of making spatiotemporal... Read More about Spatio-Temporal Motility MRI (STMM) analysis of the stomach and colon.

Mechanisms underlying effects of kiwifruit on intestinal function shown by MRI in healthy volunteers (2019)
Journal Article
Wilkinson-Smith, V., Dellschaft, N., Ansell, J., Hoad, C., Marciani, L., Gowland, P., & Spiller, R. (2019). Mechanisms underlying effects of kiwifruit on intestinal function shown by MRI in healthy volunteers. Alimentary Pharmacology and Therapeutics, 49(6), 759-768. https://doi.org/10.1111/apt.15127

Background: Chronic constipation affects approximately 17% of the population worldwide and remains an important unmet need since patients are often dissatisfied with treatment. Kiwifruit may offer an alternative to traditional laxatives and have been... Read More about Mechanisms underlying effects of kiwifruit on intestinal function shown by MRI in healthy volunteers.

The Effect of Psyllium Husk on Intestinal Microbiota in Constipated Patients and Healthy Controls (2019)
Journal Article
Jalanka, J., Major, G., Murray, K., Singh, G., Nowak, A., Kurtz, C., …Spiller, R. (2019). The Effect of Psyllium Husk on Intestinal Microbiota in Constipated Patients and Healthy Controls. International Journal of Molecular Sciences, 20(2), Article 433. https://doi.org/10.3390/ijms20020433

Psyllium is a widely used treatment for constipation. It traps water in the intestine increasing stool water, easing defaecation and altering the colonic environment. We aimed to assess the impact of psyllium on faecal microbiota, whose key role in g... Read More about The Effect of Psyllium Husk on Intestinal Microbiota in Constipated Patients and Healthy Controls.

Follow-on RifAximin for the prevention of recurrence following standard treatment of infection with Clostridium difficile (RAPID): a randomised placebo controlled trial (2018)
Journal Article
Major, G., Bradshaw, L., Boota, N., Sprange, K., Diggle, M., Montgomery, A., …Spiller, R. (2018). Follow-on RifAximin for the prevention of recurrence following standard treatment of infection with Clostridium difficile (RAPID): a randomised placebo controlled trial. Gut, https://doi.org/10.1136/gutjnl-2018-316794

Background Clostridium difficile infection (CDI) recurs after initial treatment in approximately one in four patients. A single-centre pilot study suggested that this could be reduced using ‘follow-on’ rifaximin treatment. We aimed to assess the effi... Read More about Follow-on RifAximin for the prevention of recurrence following standard treatment of infection with Clostridium difficile (RAPID): a randomised placebo controlled trial.

Cine MRI assessment of motility in the unprepared small bowel in the fasting and fed state: beyond the breath-hold (2018)
Journal Article
Hoad, C., Marciani, L., Spiller, R., Gowland, P., & Moran, G. (2019). Cine MRI assessment of motility in the unprepared small bowel in the fasting and fed state: beyond the breath-hold. Neurogastroenterology and Motility, 31(1), e13466. https://doi.org/10.1111/nmo.13466

Background The symptoms of functional bowel disorders are common in postprandial but investigations are generally undertaken in the fasted state using invasive procedures. MRI provides a noninvasive tool to study the gastrointestinal tract in an u... Read More about Cine MRI assessment of motility in the unprepared small bowel in the fasting and fed state: beyond the breath-hold.

Demonstration of differences in colonic volumes, transit, chyme consistency and response to psyllium between healthy and constipated subjects using magnetic resonance imaging (2018)
Journal Article
Major, G., Murray, K., Singh, G., Nowak, A., Hoad, C. L., Marciani, L., …Spiller, R. C. (2018). Demonstration of differences in colonic volumes, transit, chyme consistency and response to psyllium between healthy and constipated subjects using magnetic resonance imaging. Neurogastroenterology and Motility, 30(9), Article e13400. https://doi.org/10.1111/nmo.13400

Background: In functional gastrointestinal disorders a lack of objective biomarkers limits evaluation of underlying mechanisms. We aimed to demonstrate the utility of Magnetic Resonance Imaging (MRI) for this task using psyllium, an effective constip... Read More about Demonstration of differences in colonic volumes, transit, chyme consistency and response to psyllium between healthy and constipated subjects using magnetic resonance imaging.

A low FODMAP diet is associated with changes in the microbiota and reduction in breath hydrogen but not colonic volume in healthy subjects (2018)
Journal Article
Sloan, T. J., Jalanka, J., Major, G. A. D., Krishnasamy, S., Pritchard, S., Abdelrazig, S., …Spiller, R. C. (2018). A low FODMAP diet is associated with changes in the microbiota and reduction in breath hydrogen but not colonic volume in healthy subjects. PLoS ONE, 13(7), Article e0201410. https://doi.org/10.1371/journal.pone.0201410

Background & aims Ingestion of poorly digested, fermentable carbohydrates (fermentable oligo-, di-, mono-saccharides and polyols; FODMAPs) have been implicated in exacerbating intestinal symptoms and the reduction of intake with symptom alleviatio... Read More about A low FODMAP diet is associated with changes in the microbiota and reduction in breath hydrogen but not colonic volume in healthy subjects.

Hidden dangers of antibiotic use: increased gut permeability mediated by increased pancreatic proteases reaching the colon (2018)
Journal Article
Spiller, R. C. (2018). Hidden dangers of antibiotic use: increased gut permeability mediated by increased pancreatic proteases reaching the colon. Cellular and Molecular Gastroenterology and Hepatology, 6(3), 347–348.e1. https://doi.org/10.1016/j.jcmgh.2018.06.005

As we learn more about the importance of our microbiome in inflammatory, metabolic, and functional disorders, we are coming to appreciate the risks of disturbing this with broad-spectrum antibiotics. We have known for many years that as antibiotics h... Read More about Hidden dangers of antibiotic use: increased gut permeability mediated by increased pancreatic proteases reaching the colon.

Post infectious IBS: defining its clinical features and prognosis using an internet-based survey (2018)
Journal Article
Card, T., Enck, P., Barbara, G., Boeckxstaens, G. E., Santos, J., Azpiroz, F., …Spiller, R. C. (2018). Post infectious IBS: defining its clinical features and prognosis using an internet-based survey. United European Gastroenterology Journal, 6(8), 1245-1253. https://doi.org/10.1177/2050640618779923

Background: Gastrointestinal infection is an important risk factor for developing IBS. Our aim was to characterise postinfectious IBS (PI-IBS) compared to other IBS patients. Methods: An internet survey of IBS patients using Rome III diagnostic ques... Read More about Post infectious IBS: defining its clinical features and prognosis using an internet-based survey.

Insights into the different effects of food on intestinal secretion using magnetic resonance imaging (2018)
Journal Article
Wilkinson-Smith, V. C., Major, G., Ashleigh, L., Murray, K., Hoad, C. L., Marciani, L., …Spiller, R. C. (2018). Insights into the different effects of food on intestinal secretion using magnetic resonance imaging. Journal of Parenteral and Enteral Nutrition, 42(8), 1342-1348. https://doi.org/10.1002/jpen.1157

Background: Plant foods may stimulate intestinal secretion through chemicals designed to deter herbivores, including lactucins in lettuce and rhein in rhubarb. This may increase ileostomy output and induce diarrhoea in people with intact bowels. Obj... Read More about Insights into the different effects of food on intestinal secretion using magnetic resonance imaging.

Cortical differences in diverticular disease and correlation with symptom reports (2018)
Journal Article
Pitiot, A., Smith, J. K., Garratt, J., Francis, S. T., Gowland, P. A., Spiller, R. C., & Marciani, L. (2018). Cortical differences in diverticular disease and correlation with symptom reports. Neurogastroenterology and Motility, 30(7), Article e13303. https://doi.org/10.1111/nmo.13303

Background Recent studies have shown that the brain of patients with gastrointestinal disease differ both structurally and functionally from that of controls. Highly somatizing diverticular disease (HSDD) patients were also shown to differ from... Read More about Cortical differences in diverticular disease and correlation with symptom reports.

Glycaemic, gastrointestinal and appetite responses to breakfast porridges from ancient cereal grains: a MRI pilot study in healthy humans (2017)
Journal Article
Alyami, J., Ladd, N., Pritchard, S. E., Hoad, C. L., Abdul Sultan, A., Spiller, R. C., …Taylor, M. A. (2017). Glycaemic, gastrointestinal and appetite responses to breakfast porridges from ancient cereal grains: a MRI pilot study in healthy humans. Food Research International, https://doi.org/10.1016/j.foodres.2017.11.071

Cereal grain based porridges are commonly consumed throughout the world. Whilst some data are available for varieties that are popular in the Western world such as oats and rye, other ‘ancient’ grains used in the East and in Africa such as millets ar... Read More about Glycaemic, gastrointestinal and appetite responses to breakfast porridges from ancient cereal grains: a MRI pilot study in healthy humans.

MRI assessment of the postprandial gastrointestinal motility and peptide response in healthy humans (2017)
Journal Article
Khalaf, A., Hoad, C., Menys, A., Nowak, A., Taylor, S. A., Paparo, S., …Moran, G. W. (2018). MRI assessment of the postprandial gastrointestinal motility and peptide response in healthy humans. Neurogastroenterology and Motility, 30(1), Article e13182. https://doi.org/10.1111/nmo.13182

Background: Feeding triggers inter-related gastrointestinal (GI) motor, peptide and appetite responses. These are rarely studied together due to methodological limitations. Recent MRI advances allow pan-intestinal, non-invasive assessment of motility... Read More about MRI assessment of the postprandial gastrointestinal motility and peptide response in healthy humans.

Magnetic resonance imaging quantification of fasted state colonic liquid pockets in healthy humans (2017)
Journal Article
Murray, K., Hoad, C. L., Mudie, D. M., Wright, J., Heissam, K., Abrehart, N., …Marciani, L. (2017). Magnetic resonance imaging quantification of fasted state colonic liquid pockets in healthy humans. Molecular Pharmaceutics, 14(8), 2629-2638. https://doi.org/10.1021/acs.molpharmaceut.7b00095

The rate and extent of drug dissolution and absorption from solid oral dosage forms is highly dependent on the volume of liquid in the gastrointestinal tract (GIT). However, little is known about the time course of GIT liquid volumes after drinking a... Read More about Magnetic resonance imaging quantification of fasted state colonic liquid pockets in healthy humans.

Randomised clinical trial: mesalazine versus placebo in the prevention of diverticulitis recurrence (2017)
Journal Article
Kruis, W., Kardalinos, V., Eisenbach, T., Lukas, M., Vich, T., Bunganic, I., …Spiller, R. (2017). Randomised clinical trial: mesalazine versus placebo in the prevention of diverticulitis recurrence. Alimentary Pharmacology and Therapeutics, 46(3), 282-291. https://doi.org/10.1111/apt.14152

Background Previous studies have reached conflicting conclusions regarding the efficacy of mesalazine in the prevention of recurrent diverticulitis. Aim To investigate the efficacy and safety of mesalazine granules in the prevention of recur... Read More about Randomised clinical trial: mesalazine versus placebo in the prevention of diverticulitis recurrence.

Assessment of motion of colonic contents in the human colon using MRI tagging (2017)
Journal Article
Pritchard, S. E., Paul, J., Major, G., Marciani, L., Gowland, P. A., Spiller, R. C., & Hoad, C. (2017). Assessment of motion of colonic contents in the human colon using MRI tagging. Neurogastroenterology and Motility, 29(9), Article e13091. https://doi.org/10.1111/nmo.13091

Background We have previously reported a non-invasive, semi-automated technique to assess motility of the wall of the ascending colon (AC) using Magnetic Resonance Imaging. This study investigated the feasibility of using a tagged MRI technique to vi... Read More about Assessment of motion of colonic contents in the human colon using MRI tagging.

Distinct abnormalities of small bowel and regional colonic volumes in subtypes of irritable bowel syndrome revealed by MRI (2016)
Journal Article
Lam, C., Chaddock, G., Marciani, L., Costigan, C., Cox, E., Hoad, C., …Spiller, R. C. (in press). Distinct abnormalities of small bowel and regional colonic volumes in subtypes of irritable bowel syndrome revealed by MRI. American Journal of Gastroenterology, https://doi.org/10.1038/ajg.2016.538

OBJECTIVES: Non-invasive biomarkers which identify different mechanisms of disease in subgroups of irritable bowel syndrome (IBS) could be valuable. Our aim was to seek useful magnetic resonance imaging (MRI) parameters that could distinguish each IB... Read More about Distinct abnormalities of small bowel and regional colonic volumes in subtypes of irritable bowel syndrome revealed by MRI.

Exploring gastrointestinal variables affecting drug and formulation behavior: methodologies, challenges and opportunities (2016)
Journal Article
Hens, B., Corsetti, M., Spiller, R. C., Marciani, L., Vanuytsel, T., Tack, J., …Augustijns, P. (2017). Exploring gastrointestinal variables affecting drug and formulation behavior: methodologies, challenges and opportunities. International Journal of Pharmaceutics, 519(1-2), https://doi.org/10.1016/j.ijpharm.2016.11.063

Various gastrointestinal (GI) factors affect drug and formulation behavior after oral administration, including GI transfer, motility, pH and GI fluid volume and composition. An in-depth understanding of these physiological and anatomical variables i... Read More about Exploring gastrointestinal variables affecting drug and formulation behavior: methodologies, challenges and opportunities.

Colon Hypersensitivity to Distension, Rather Than Excessive Gas Production, Produces Carbohydrate-Related Symptoms in Individuals With Irritable Bowel Syndrome (2016)
Journal Article
Major, G., Pritchard, S. E., Murray, K., Alappadan, J. P., Hoad, C., Marciani, L., …Spiller, R. C. (2017). Colon Hypersensitivity to Distension, Rather Than Excessive Gas Production, Produces Carbohydrate-Related Symptoms in Individuals With Irritable Bowel Syndrome. Gastroenterology, 152(1), 124-133.e2. https://doi.org/10.1053/j.gastro.2016.09.062

Background & Aims: Poorly digested, fermentable carbohydrates may induce symptoms of irritable bowel syndrome (IBS), via unclear mechanisms. We performed a randomized trial with magnetic resonance imaging (MRI) analysis to investigate correlations be... Read More about Colon Hypersensitivity to Distension, Rather Than Excessive Gas Production, Produces Carbohydrate-Related Symptoms in Individuals With Irritable Bowel Syndrome.

Prior Consumption of a Fat Meal in Healthy Adults Modulates the Brain's Response to Fat (2016)
Journal Article
Eldeghaidy, S., Marciani, L., Hort, J., Hollowood, T. A., Singh, G., Bush, D., …Francis, S. T. (2016). Prior Consumption of a Fat Meal in Healthy Adults Modulates the Brain's Response to Fat. Journal of Nutrition, 146(11), 2187-2198. https://doi.org/10.3945/jn.116.234104

Background: Consumption of fat is regulated by reward and homeostatic pathways, but no studies have examined the role of the intake of a high fat meal (HFM) on subsequent brain activation to oral stimuli. Objective: We evaluated how prior consumptio... Read More about Prior Consumption of a Fat Meal in Healthy Adults Modulates the Brain's Response to Fat.

Coinfection and Emergence of Rifamycin Resistance during a Recurrent Clostridium difficile Infection (2016)
Journal Article
Stevenson, E. C., Major, G. A., Spiller, R. C., Kuehne, S. A., & Minton, N. P. (2016). Coinfection and Emergence of Rifamycin Resistance during a Recurrent Clostridium difficile Infection. Journal of Clinical Microbiology, 54(11), 2689-2694. https://doi.org/10.1128/jcm.01025-16

Clostridium difficile (Peptoclostridium difficile) is a common health care-associated infection with a disproportionately high incidence in elderly patients. Disease symptoms range from mild diarrhea to life-threatening pseudomembranous colitis. Arou... Read More about Coinfection and Emergence of Rifamycin Resistance during a Recurrent Clostridium difficile Infection.

Bowel Disorders (2016)
Journal Article
Lacy, B. E., Mearin, F., Chang, L., Chey, W. D., Lembo, A. J., Simren, M., & Spiller, R. (2016). Bowel Disorders. Gastroenterology, 150(6), 1393-1407.e5. https://doi.org/10.1053/j.gastro.2016.02.031

Functional bowel disorders are highly prevalent disorders found worldwide. These disorders have the potential to affect all members of society, regardless of age, gender, race, creed, color or socioeconomic status. Improving our understanding of func... Read More about Bowel Disorders.

Corticotrophin releasing factor increases ascending colon volume after a fructose test meal in healthy humans: a randomised control trial (2016)
Journal Article
Murray, K., Lam, C., Rehman, S., Marciani, L., Costigan, C., Hoad, C., …Spiller, R. C. (2016). Corticotrophin releasing factor increases ascending colon volume after a fructose test meal in healthy humans: a randomised control trial. American Journal of Clinical Nutrition, 103(5), https://doi.org/10.3945/ajcn.115.125047

Background: Poorly absorbed, fermentable carbohydrates can provoke irritable bowel syndrome (IBS) symptoms by escaping absorption in the small bowel and being rapidly fermented in the colon in some susceptible subjects. IBS patients are often anxious... Read More about Corticotrophin releasing factor increases ascending colon volume after a fructose test meal in healthy humans: a randomised control trial.

Anticipation of thermal pain in diverticular disease (2016)
Journal Article
Smith, J. K., Marciani, L., Humes, D. J., Francis, S. T., Gowland, P. A., & Spiller, R. C. (2016). Anticipation of thermal pain in diverticular disease. Neurogastroenterology and Motility, 28(6), https://doi.org/10.1111/nmo.12790

Background The relative importance of peripheral nerve injury or differences in central pain processing in painful diverticular disease (DD) is unclear. Functional MRI has demonstrated changes in the anticipation of pain in irritable bowel syndrom... Read More about Anticipation of thermal pain in diverticular disease.

Magnetic resonance imaging biomarkers of gastrointestinal motor function and fluid distribution (2015)
Journal Article
Khalaf, A., Hoad, C., Spiller, R. C., Gowland, P. A., Moran, G. W., & Marciani, L. (2015). Magnetic resonance imaging biomarkers of gastrointestinal motor function and fluid distribution. World Journal of Gastrointestinal Pathophysiology, 6(4), https://doi.org/10.4291/wjgp.v6.i4.140

Magnetic resonance imaging (MRI) is a well established technique that has revolutionized diagnostic radiology. Until recently, the impact that MRI has had in the assessment of gastrointestinal motor function and bowel fluid distribution in health and... Read More about Magnetic resonance imaging biomarkers of gastrointestinal motor function and fluid distribution.

Fat emulsion intragastric stability and droplet size modulate gastrointestinal responses and subsequent food intake in young adults (2015)
Journal Article
Hussein, M., Hoad, C., Wright, J., Singh, G., Stephenson, M., Cox, E., …Marciani, L. (2015). Fat emulsion intragastric stability and droplet size modulate gastrointestinal responses and subsequent food intake in young adults. Journal of Nutrition, 145(6), 1170-1177. https://doi.org/10.3945/jn.114.204339

Background: Intragastric creaming and droplet size of fat emulsions may affect intragastric behavior and gastrointestinal and satiety responses. Objectives: We tested the hypotheses that gastrointestinal physiologic responses and satiety will be i... Read More about Fat emulsion intragastric stability and droplet size modulate gastrointestinal responses and subsequent food intake in young adults.

A mechanistic multi-centre, parallel group, randomised placebo controlled trial of Mesalazine for treatment of irritable bowel syndrome with diarrhoea (IBS-D) (2015)
Journal Article
Lam, C., Tan, W., Leighton, M., Hastings, M., Lingaya, M., Falcone, Y., …Spiller, R. C. (2015). A mechanistic multi-centre, parallel group, randomised placebo controlled trial of Mesalazine for treatment of irritable bowel syndrome with diarrhoea (IBS-D). Gut, 65(1), https://doi.org/10.1136/gutjnl-2015-309122

Introduction: Immune activation has been reported in the mucosa of irritable bowel syndrome patients with diarrhoea (IBS-D) and some small studies have suggested that Mesalazine may reduce symptoms. We performed a double blind, randomised placebo con... Read More about A mechanistic multi-centre, parallel group, randomised placebo controlled trial of Mesalazine for treatment of irritable bowel syndrome with diarrhoea (IBS-D).

Measurement of gastric meal and secretion volumes using magnetic resonance imaging (2015)
Journal Article
Hoad, C., Parker, H., Hudders, N., Costigan, C., Cox, E., Perkins, A., …Gowland, P. (2015). Measurement of gastric meal and secretion volumes using magnetic resonance imaging. Physics in Medicine and Biology, 60(3), 1367-1383. https://doi.org/10.1088/0031-9155/60/3/1367

MRI can assess multiple gastric functions without ionizing radiation. However, time consuming image acquisition and analysis of gastric volume data, plus confounding of gastric emptying measurements by gastric secretions mixed with the test meal have... Read More about Measurement of gastric meal and secretion volumes using magnetic resonance imaging.

Effects of bowel cleansing on the intestinal microbiota (2014)
Journal Article
Jalanka, J., Salonen, A., Salojärvi, J., Ritari, J., Immonen, O., Marciani, L., …de Vos, W. M. (2015). Effects of bowel cleansing on the intestinal microbiota. Gut, 64(10), 1562-1568. https://doi.org/10.1136/gutjnl-2014-307240

Objective: An adequate bowel cleansing is essential for a successful colonoscopy. Although purgative consumption is safe for the patient, there is little consensus on how the intestinal microbiota is affected by the procedure, especially regarding th... Read More about Effects of bowel cleansing on the intestinal microbiota.

Additive effects of gastric volumes and macronutrient composition on the sensation of postprandial fullness in humans (2014)
Journal Article
Marciani, L., Cox, E., Pritchard, S., Major, G., Hoad, C., Mellows, M., …Spiller, R. (2015). Additive effects of gastric volumes and macronutrient composition on the sensation of postprandial fullness in humans. European Journal of Clinical Nutrition, 69(3), 380-384. https://doi.org/10.1038/ejcn.2014.194

Background/Objectives: Intake of food or fluid distends the stomach and triggers mechanoreceptors and vagal afferents. Wall stretch and tension produces a feeling of fullness. Duodenal infusion studies assessing gastric sensitivity by barostat have s... Read More about Additive effects of gastric volumes and macronutrient composition on the sensation of postprandial fullness in humans.

Quantification of gastrointestinal liquid volumes and distribution following a 240 mL dose of water in the fasted state (2014)
Journal Article
Mudie, D. M., Murray, K., Hoad, C. L., Pritchard, S. E., Garnett, M. C., Amidon, G. L., …Marciani, L. (2014). Quantification of gastrointestinal liquid volumes and distribution following a 240 mL dose of water in the fasted state. Molecular Pharmaceutics, 11(9), 3039-3047. https://doi.org/10.1021/mp500210c

Previous imaging studies offered a snapshot of water distribution in fasted humans and showed that water in the small intestine is distributed in small pockets. This study aimed to quantify the volume and number of water pockets in the upper gut of f... Read More about Quantification of gastrointestinal liquid volumes and distribution following a 240 mL dose of water in the fasted state.

A low calorie morning meal prevents the decline of hepatic glycogen stores: a pilot in vivo 13C magnetic resonance study (2014)
Journal Article
Bawden, S., Stephenson, M., Ciampi, E., Hunter, K., Marciani, L., Spiller, R., …Gowland, P. (2014). A low calorie morning meal prevents the decline of hepatic glycogen stores: a pilot in vivo 13C magnetic resonance study. Food and Function, 5(9), 2237-2242. https://doi.org/10.1039/c4fo00050a

Previous studies have reported a meal-induced rise in hepatic glycogen stores from baseline levels following a fast and it is generally assumed that glycogen levels rise steadily following meals throughout the day. However, measurements are normally... Read More about A low calorie morning meal prevents the decline of hepatic glycogen stores: a pilot in vivo 13C magnetic resonance study.

Differential Effects of FODMAPs (Fermentable Oligo-, Di-, Mono-Saccharides and Polyols) on Small and Large Intestinal Contents in Healthy Subjects Shown by MRI (2014)
Journal Article
Murray, K., Wilkinson-Smith, V., Hoad, C., Costigan, C., Cox, E., Lam, C., …Spiller, R. C. (2014). Differential Effects of FODMAPs (Fermentable Oligo-, Di-, Mono-Saccharides and Polyols) on Small and Large Intestinal Contents in Healthy Subjects Shown by MRI. American Journal of Gastroenterology, 109(1), 110-119. https://doi.org/10.1038/ajg.2013.386

OBJECTIVES:The objective of this study was to investigate whether ingestion of fructose and fructans (such as inulin) can exacerbate irritable bowel syndrome (IBS) symptoms. The aim was to better understand the origin of these symptoms by magnetic re... Read More about Differential Effects of FODMAPs (Fermentable Oligo-, Di-, Mono-Saccharides and Polyols) on Small and Large Intestinal Contents in Healthy Subjects Shown by MRI.

A randomised trial of ondansetron for the treatment of irritable bowel syndrome with diarrhoea (2013)
Journal Article
Garsed, K., Chernova, J., Hastings, M., Lam, C., Marciani, L., Singh, G., …Spiller, R. C. (2014). A randomised trial of ondansetron for the treatment of irritable bowel syndrome with diarrhoea. Gut, 63(10), 1617-1625. https://doi.org/10.1136/gutjnl-2013-305989

Background: Irritable bowel syndrome with diarrhoea (IBS-D) is particularly debilitating due to urgency and episodic incontinence. Some 5-hydroxytryptamine 3 (5-HT3) receptor antagonists (5-HT3RAs) have proven effective but have serious side effects.... Read More about A randomised trial of ondansetron for the treatment of irritable bowel syndrome with diarrhoea.

Faecal microbiota composition and host–microbe cross-talk following gastroenteritis and in postinfectious irritable bowel syndrome (2013)
Journal Article
Jalanka-Tuovinen, J., Salojärvi, J., Salonen, A., Immonen, O., Garsed, K., Kelly, F. M., …De Vos, W. M. (2014). Faecal microbiota composition and host–microbe cross-talk following gastroenteritis and in postinfectious irritable bowel syndrome. Gut, 63(11), 1737-1745. https://doi.org/10.1136/gutjnl-2013-305994

Background: About 10% of patients with IBS report the start of the syndrome after infectious enteritis. The clinical features of postinfectious IBS (PI-IBS) resemble those of diarrhoea-predominant IBS (IBS-D). While altered faecal microbiota has been... Read More about Faecal microbiota composition and host–microbe cross-talk following gastroenteritis and in postinfectious irritable bowel syndrome.

Novel MRI tests of orocecal transit time and whole gut transit time: studies in normal subjects (2013)
Journal Article
Chaddock, G., Lam, C., Hoad, C., Costigan, C., Cox, E. F., Placidi, E., …Spiller, R. C. (2014). Novel MRI tests of orocecal transit time and whole gut transit time: studies in normal subjects. Neurogastroenterology and Motility, 26(2), 205-214. https://doi.org/10.1111/nmo.12249

Background: Colonic transit tests are used to manage patients with Functional Gastrointestinal Disorders. Some tests used expose patients to ionizing radiation. The aim of this study was to compare novel magnetic resonance imaging (MRI) tests for mea... Read More about Novel MRI tests of orocecal transit time and whole gut transit time: studies in normal subjects.

Delayed gastric emptying and reduced postprandial small bowel water content of equicaloric whole meal bread versus rice meals in healthy subjects: novel MRI insights (2013)
Journal Article
Marciani, L., Pritchard, S. E., Hellier-Woods, C., Costigan, C., Hoad, C., Gowland, P. A., & Spiller, R. C. (2013). Delayed gastric emptying and reduced postprandial small bowel water content of equicaloric whole meal bread versus rice meals in healthy subjects: novel MRI insights. European Journal of Clinical Nutrition, 67(7), https://doi.org/10.1038/ejcn.2013.78

BACKGROUND/OBJECTIVES: Postprandial bloating is a common symptom in patients with functional gastrointestinal (GI) diseases. Whole meal bread (WMB) often aggravates such symptoms though the mechanisms are unclear. We used magnetic resonance imaging (... Read More about Delayed gastric emptying and reduced postprandial small bowel water content of equicaloric whole meal bread versus rice meals in healthy subjects: novel MRI insights.

Effects of various food ingredients on gall bladder emptying (2013)
Journal Article
Marciani, L., Cox, E., Hoad, C., Totman, J. J., Costigan, C., Singh, G., …Spiller, R. C. (2013). Effects of various food ingredients on gall bladder emptying. European Journal of Clinical Nutrition, 67(11), https://doi.org/10.1038/ejcn.2013.168

Background/objectives: The emptying of the gall bladder in response to feeding is pivotal for the digestion of fat, but the role of various food ingredients in contracting the gall bladder postprandially is not well understood. We hypothesized that d... Read More about Effects of various food ingredients on gall bladder emptying.