All Outputs (62)

A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes: a pilot study (2024)
Journal Article
Ng, C., Dellschaft, N. S., Hoad, C., Marciani, L., Spiller, R., Crooks, C., …Smyth, A. R. (2024). A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes: a pilot study. NIHR Open Research, 3, Article 65. https://doi.org/10.3310/nihropenres.13510.2

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 funct... Read More about A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes: a pilot study.

The impact of heat treatment of bovine milk on gastric emptying and nutrient appearance in peripheral circulation in healthy females: a randomized controlled trial comparing pasteurized and ultra-high temperature milk (2024)
Journal Article
Milan, A. M., Barnett, M. P., McNabb, W. C., Roy, N. C., Coutinho, S., Hoad, C. L., …Mithen, R. F. (2024). The impact of heat treatment of bovine milk on gastric emptying and nutrient appearance in peripheral circulation in healthy females: a randomized controlled trial comparing pasteurized and ultra-high temperature milk. American Journal of Clinical Nutrition, 119(5), 1200-1215. https://doi.org/10.1016/j.ajcnut.2024.03.002

Background: Heat treatments of dairy, including pasteurization and ultra-high temperature (UHT) processing, alter milk macromolecular structures, and ultimately affect digestion. In vitro, animal, and human studies show faster nutrient release or cir... Read More about The impact of heat treatment of bovine milk on gastric emptying and nutrient appearance in peripheral circulation in healthy females: a randomized controlled trial comparing pasteurized and ultra-high temperature milk.

Use of Magnetic Resonance Imaging for Visualization of Oral Dosage Forms in the Human Stomach: A Scoping Review (2024)
Journal Article
Akbar, T., Gershkovich, P., Stamatopoulos, K., Gowland, P. A., Stolnik, S., Butler, J., & Marciani, L. (2024). Use of Magnetic Resonance Imaging for Visualization of Oral Dosage Forms in the Human Stomach: A Scoping Review. Molecular Pharmaceutics, 21(4), 1553-1562. https://doi.org/10.1021/acs.molpharmaceut.3c01123

Oral dosage forms are the most widely and frequently used formulations to deliver active pharmaceutical ingredients (APIs), due to their ease of administration and noninvasiveness. Knowledge of intragastric release rates and gastric mixing is crucial... Read More about Use of Magnetic Resonance Imaging for Visualization of Oral Dosage Forms in the Human Stomach: A Scoping Review.

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.

Stochastic Differential Equation-based Mixed Effects Model of the Fluid Volume in the Fasted Stomach in Healthy Adult Human (2023)
Journal Article
Wang, K., Marciani, L., Amidon, G. L., Smith, D. E., & Sun, D. (2023). Stochastic Differential Equation-based Mixed Effects Model of the Fluid Volume in the Fasted Stomach in Healthy Adult Human. AAPS Journal, 25(5), https://doi.org/10.1208/s12248-023-00840-3

The rate and extent of drug dissolution and absorption from a solid oral dosage form depend largely on the fluid volume along the gastrointestinal tract. Hence, a model built upon the gastric fluid volume profiles can help to predict drug dissolution... Read More about Stochastic Differential Equation-based Mixed Effects Model of the Fluid Volume in the Fasted Stomach in Healthy Adult Human.

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.

A comparative, randomised MRI study of the physiological and appetitive responses to gelling (alginate) and non-gelling nasogastric tube feeds in healthy men (2023)
Journal Article
Aliyu, A. I., Nixon, A., Hoad, C., Marciani, L., Corsetti, M., Aithal, G. P., …Taylor, M. A. (2023). A comparative, randomised MRI study of the physiological and appetitive responses to gelling (alginate) and non-gelling nasogastric tube feeds in healthy men. British Journal of Nutrition, 130(8), 1316-1328. https://doi.org/10.1017/S0007114523000302

AbstractInclusion in nasogastric tube feeds (NGTF) of acid-sensitive, seaweed-derived alginate, expected to form a reversible gel in the stomach, may create a more normal intragastric state and modified gastrointestinal responses. This may ameliorate... Read More about A comparative, randomised MRI study of the physiological and appetitive responses to gelling (alginate) and non-gelling nasogastric tube feeds in healthy men.

Correction: Schütt et al. Simulating the Hydrodynamic Conditions of the Human Ascending Colon: A Digital Twin of the Dynamic Colon Model. (Pharmaceutics (2022), (14), (184)) (2022)
Journal Article
Schütt, M., O’Farrell, C., Stamatopoulos, K., Hoad, C. L., Marciani, L., Sulaiman, S., …Alexiadis, A. (2022). Correction: Schütt et al. Simulating the Hydrodynamic Conditions of the Human Ascending Colon: A Digital Twin of the Dynamic Colon Model. (Pharmaceutics (2022), (14), (184)). Pharmaceutics, 14(7), Article 1402. https://doi.org/10.3390/pharmaceutics14071402

In the original publication [1], there was a mistake in Figure 6 when published. The experimental data points in the upper diagram were missing. The corrected Figure 6 appears below.

Imaging in inflammatory bowel disease: current and future perspectives (2022)
Journal Article
Shaban, N., Hoad, C. L., Naim, I., Alshammari, M., Radford, S. J., Clarke, C., …Moran, G. (2022). Imaging in inflammatory bowel disease: current and future perspectives. Frontline Gastroenterology, 13(e1), E28-E34. https://doi.org/10.1136/flgastro-2022-102117

The use of cross-sectional imaging and ultrasonography has long complemented endoscopic assessment of inflammatory bowel disease (IBD). Clinical symptoms alone are often not enough to assess disease activity, so a reliance on non-invasive techniques... Read More about Imaging in inflammatory bowel disease: current and future perspectives.

Application of in vivo imaging techniques and diagnostic tools in oral drug delivery research (2022)
Journal Article
Senekowitsch, S., Schick, P., Abrahamsson, B., Augustijns, P., Gießmann, T., Lennernäs, H., …Koziolek, M. (2022). Application of in vivo imaging techniques and diagnostic tools in oral drug delivery research. Pharmaceutics, 14(4), Article 801. https://doi.org/10.3390/pharmaceutics14040801

Drug absorption following oral administration is determined by complex and dynamic interactions between gastrointestinal (GI) physiology, the drug, and its formulation. Since many of these interactions are not fully understood, the COST action on “Un... Read More about Application of in vivo imaging techniques and diagnostic tools in oral drug delivery research.

Pilot Double-Blind Randomised Controlled Trial: Effects of Jejunal Nutrition on Postprandial Distress in Diabetic Gastropathy (J4G Trial) (2022)
Journal Article
Carneiro, L., White, J., Parker, H., Hoad, C., Tucker, E., Marciani, L., …Fox, M. (2022). Pilot Double-Blind Randomised Controlled Trial: Effects of Jejunal Nutrition on Postprandial Distress in Diabetic Gastropathy (J4G Trial). Nutrients, 14(7), Article 1321. https://doi.org/10.3390/nu14071321

Nausea, vomiting and abdominal pain in diabetic patients are often attributed to diabetic gastropathy (DG). Post-pyloric (“jejunal”) enteral nutrition (JN) may improve nutrition and glycaemia in difficult cases. The acute effects of JN on postprandia... Read More about Pilot Double-Blind Randomised Controlled Trial: Effects of Jejunal Nutrition on Postprandial Distress in Diabetic Gastropathy (J4G Trial).

Simulating the Hydrodynamic Conditions of the Human Ascending Colon: A Digital Twin of the Dynamic Colon Model (2022)
Journal Article
Schütt, M., O’Farrell, C., Stamatopoulos, K., Hoad, C. L., Marciani, L., Sulaiman, S., …Alexiadis, A. (2022). Simulating the Hydrodynamic Conditions of the Human Ascending Colon: A Digital Twin of the Dynamic Colon Model. Pharmaceutics, 14(1), Article 184. https://doi.org/10.3390/pharmaceutics14010184

The performance of solid oral dosage forms targeting the colon is typically evaluated using standardised pharmacopeial dissolution apparatuses. However, these fail to replicate colonic hydrodynamics. This study develops a digital twin of the Dynamic... Read More about Simulating the Hydrodynamic Conditions of the Human Ascending Colon: A Digital Twin of the Dynamic Colon Model.

Medical device development for children and young people—reviewing the challenges and opportunities (2021)
Journal Article
Dimitri, P., Pignataro, V., Lupo, M., Bonifazi, D., Henke, M., Musazzi, U. M., …Lopedota, A. (2021). Medical device development for children and young people—reviewing the challenges and opportunities. Pharmaceutics, 13(12), Article 2178. https://doi.org/10.3390/pharmaceutics13122178

Development of specific medical devices (MDs) is required to meet the healthcare needs of children and young people (CYP). In this context, MD development should address changes in growth and psychosocial maturation, physiology, and pathophysiology,... Read More about Medical device development for children and young people—reviewing the challenges and opportunities.

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.

Luminal fluid motion inside an in vitro dissolution model of the human ascending colon assessed using magnetic resonance imaging (2021)
Journal Article
O’Farrell, C., Hoad, C. L., Stamatopoulos, K., Marciani, L., Sulaiman, S., Simmons, M. J. H., & Batchelor, H. K. (2021). Luminal fluid motion inside an in vitro dissolution model of the human ascending colon assessed using magnetic resonance imaging. Pharmaceutics, 13(10), Article 1545. https://doi.org/10.3390/pharmaceutics13101545

Knowledge of luminal flow inside the human colon remains elusive, despite its importance for the design of new colon-targeted drug delivery systems and physiologically relevant in silico models of dissolution mechanics within the colon. This study us... Read More about Luminal fluid motion inside an in vitro dissolution model of the human ascending colon assessed using magnetic resonance imaging.

Assessing lymphatic uptake of lipids using magnetic resonance imaging: A feasibility study in healthy human volunteers with potential application for tracking lymph node delivery of drugs and formulation excipients (2021)
Journal Article
Jewell, A., Williams, H., Hoad, C. L., Gellert, P. R., Ashford, M. B., Butler, J., …Gershkovich, P. (2021). Assessing lymphatic uptake of lipids using magnetic resonance imaging: A feasibility study in healthy human volunteers with potential application for tracking lymph node delivery of drugs and formulation excipients. Pharmaceutics, 13(9), Article 1343. https://doi.org/10.3390/pharmaceutics13091343

Dietary lipids and some pharmaceutical lipid excipients can facilitate the targeted delivery of drugs to the intestinal lymphatics. Here, the feasibility of magnetic resonance imaging (MRI) for imaging lipid uptake into the intestinal lymphatics was... Read More about Assessing lymphatic uptake of lipids using magnetic resonance imaging: A feasibility study in healthy human volunteers with potential application for tracking lymph node delivery of drugs and formulation excipients.

“A little (PPI) MAGIC can take you a long way” : involving children and young people in research from inception of a novel medical device to multi-centre clinical trial Roald Dahl, James and the Giant Peach (1961) (2021)
Journal Article
Abrehart, N., Frost, K., YPAG, Y. P. A. G., Harris, R., Wragg, A., Stewart, D., …Marciani, L. (2021). “A little (PPI) MAGIC can take you a long way” : involving children and young people in research from inception of a novel medical device to multi-centre clinical trial Roald Dahl, James and the Giant Peach (1961). Research Involvement and Engagement, 7, Article 2. https://doi.org/10.1186/s40900-020-00243-0

Background: There is often a great urgency to be inclusive when conducting research and to focus efforts with groups and communities that can be referred to as marginalised. This is especially the case in research concerning medical devices aimed a... Read More about “A little (PPI) MAGIC can take you a long way” : involving children and young people in research from inception of a novel medical device to multi-centre clinical trial Roald Dahl, James and the Giant Peach (1961).

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.