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Assessing the prevalence and potential drivers of food insecurity and the relationship with mental wellbeing in UK university students: A cross-sectional study (2024)
Journal Article
Aldubaybi, A. A., Coneyworth, L. J., & Jethwa, P. H. (2024). Assessing the prevalence and potential drivers of food insecurity and the relationship with mental wellbeing in UK university students: A cross-sectional study. Nutrition Bulletin, 49(1), 96-107. https://doi.org/10.1111/nbu.12662

Food insecurity (FI) among university students in the United States has been associated with poor mental wellbeing, but very little is known about the relationship between FI and mental wellbeing in the UK university population. Here we examined the... Read More about Assessing the prevalence and potential drivers of food insecurity and the relationship with mental wellbeing in UK university students: A cross-sectional study.

Active vitamin D increases myogenic differentiation in C2C12 cells via a vitamin D response element on the myogenin promoter (2023)
Journal Article
Alliband, K. H., Parr, T., Jethwa, P. H., & Brameld, J. M. (2023). Active vitamin D increases myogenic differentiation in C2C12 cells via a vitamin D response element on the myogenin promoter. Frontiers in Physiology, 14, Article 1322677. https://doi.org/10.3389/fphys.2023.1322677

Background: Skeletal muscle development during embryogenesis depends on proliferation of myoblasts followed by differentiation into myotubes/multinucleated myofibers. Vitamin D (VD) has been shown to affect these processes, but there is conflicting e... Read More about Active vitamin D increases myogenic differentiation in C2C12 cells via a vitamin D response element on the myogenin promoter.

A Comparison of Primary Human Hepatocytes and Hepatoma Cell Lines to Model the Effects of Fatty Acids, Fructose and Glucose on Liver Cell Lipid Accumulation (2022)
Journal Article
Huggett, Z. J., Smith, A., De Vivo, N., Gomez, D., Jethwa, P., Brameld, J. M., …Salter, A. M. (2022). A Comparison of Primary Human Hepatocytes and Hepatoma Cell Lines to Model the Effects of Fatty Acids, Fructose and Glucose on Liver Cell Lipid Accumulation. Nutrients, 15(1), Article 40. https://doi.org/10.3390/nu15010040

Non-alcoholic fatty liver disease (NAFLD) begins with lipid accumulation within hepatocytes, but the relative contributions of different macronutrients is still unclear. We investigated the impact of fatty acids, glucose and fructose on lipid accumul... Read More about A Comparison of Primary Human Hepatocytes and Hepatoma Cell Lines to Model the Effects of Fatty Acids, Fructose and Glucose on Liver Cell Lipid Accumulation.

Could consumption of yam (Dioscorea) or its extract be beneficial in controlling glycaemia: a systematic review (2021)
Journal Article
Alharazi, W., McGowen, A., Rose, P., & Jethwa, P. H. (2022). Could consumption of yam (Dioscorea) or its extract be beneficial in controlling glycaemia: a systematic review. British Journal of Nutrition, 128(4), 613-624. https://doi.org/10.1017/S0007114521003706

Yam (Dioscorea spp.) and its associated extracts have been shown to possess a variety of biological activities and identified as beneficial in the control of glycaemia in patients with Type II Diabetes Mellitus (T2DM). The objective was to conduct a... Read More about Could consumption of yam (Dioscorea) or its extract be beneficial in controlling glycaemia: a systematic review.

Rare sugars: metabolic impacts and mechanisms of action: a scoping review (2021)
Journal Article
Smith, A., Avery, A., Ford, R., Yang, Q., Goux, A., Mukherjee, I., …Jethwa, P. (2022). Rare sugars: metabolic impacts and mechanisms of action: a scoping review. British Journal of Nutrition, 128(3), 389-406. https://doi.org/10.1017/S0007114521003524

Food manufacturers are under increasing pressure to limit the amount of free sugars in their products. Many have reformulated products to replace sucrose, glucose and fructose with alternative sweeteners, but some of these have been associated with a... Read More about Rare sugars: metabolic impacts and mechanisms of action: a scoping review.

In vitro Effects of Biologically Active Vitamin D on Myogenesis: A Systematic Review (2021)
Journal Article
Alliband, K. H., Kozhevnikova, S. V., Parr, T., Jethwa, P. H., & Brameld, J. M. (2021). In vitro Effects of Biologically Active Vitamin D on Myogenesis: A Systematic Review. Frontiers in Physiology, 12, Article 736708. https://doi.org/10.3389/fphys.2021.736708

Vitamin D (VD) deficiency is associated with muscle weakness. A reduction in the incidence of falls in the elderly following VD supplementation and identification of the VD receptor within muscle cells suggests a direct effect of VD on muscle, but li... Read More about In vitro Effects of Biologically Active Vitamin D on Myogenesis: A Systematic Review.

Photoperiodic changes in adiposity increase sensitivity of female Siberian hamsters to systemic VGF derived peptide TLQP-21 (2019)
Journal Article
Lisci, C., Lewis, J. E., Daniel, Z. C., Stevenson, T. J., Monnier, C., Marshall, H. J., …Jethwa, P. H. (2019). Photoperiodic changes in adiposity increase sensitivity of female Siberian hamsters to systemic VGF derived peptide TLQP-21. PLoS ONE, 14(8), Article e0221517. https://doi.org/10.1371/journal.pone.0221517

TLQP-21, a peptide encoded by the highly conserved vgf gene, is expressed in neuroendocrine cells and has been the most prominent VGF-derived peptide studied in relation to control of energy balance. The recent discovery that TLQP-21 is the natural a... Read More about Photoperiodic changes in adiposity increase sensitivity of female Siberian hamsters to systemic VGF derived peptide TLQP-21.

Correction: Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain (PLoS ONE 12:2: (e0172724) DOI: 10.1371/journal.pone.0172724) (2017)
Journal Article
Lewis, J. E., Brameld, J. M., Hill, P., Cocco, C., Noli, B., Ferri, G. L., …Jethwa, P. H. (2017). Correction: Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain (PLoS ONE 12:2: (e0172724) DOI: 10.1371/journal.pone.0172724). PLoS ONE, 12(7), https://doi.org/10.1371/journal.pone.0182594

© 2017 Lewis et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cred... Read More about Correction: Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain (PLoS ONE 12:2: (e0172724) DOI: 10.1371/journal.pone.0172724).

Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain (2017)
Journal Article
Lewis, J. E., Brameld, J. M., Hill, P., Cocco, C., Noli, B., Ferri, G., …Jethwa, P. (2017). Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain. PLoS ONE, 12, Article e01727. https://doi.org/10.1371/journal.pone.0172724

VGF (non-acronymic) was first highlighted to have a role in energy homeostasis through experiments involving dietary manipulation in mice. Fasting increased VGF mRNA in the Arc and levels were subsequently reduced upon refeeding. This anabolic role f... Read More about Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain.

Factors associated with universal infant free school meal take up and refusal in a multicultural urban community (2017)
Journal Article
Goodchild, G., Faulks, J., Swift, J., Mhesuria, J., Jethwa, P., & Pearce, J. (2017). Factors associated with universal infant free school meal take up and refusal in a multicultural urban community. Journal of Human Nutrition and Dietetics, 30(4), 417-428. https://doi.org/10.1111/jhn.12442

Background Universal infant free school meals (UIFSM) were introduced in September 2014 and are available to all key stage 1 (4–7 years) children attending state-maintained infant and primary schools in England. The present study aimed to investig... Read More about Factors associated with universal infant free school meal take up and refusal in a multicultural urban community.

Antenatal weight management: women’s experiences, behaviours, and expectations of weighing in early pregnancy (2016)
Journal Article
Swift, J. A., Pearce, J., Jethwa, P., Taylor, M. A., Avery, A., Ellis, S., …McMullen, S. (2016). Antenatal weight management: women’s experiences, behaviours, and expectations of weighing in early pregnancy. Journal of Pregnancy, Article 8454759. https://doi.org/10.1155/2016/8454759

The current emphasis on obstetric risk management helps to frame gestational weight gain as problematic and encourages intervention by healthcare professionals. However pregnant women have reported confusion, distrust, and negative affect associated... Read More about Antenatal weight management: women’s experiences, behaviours, and expectations of weighing in early pregnancy.

Thyroid hormone and vitamin D regulate VGF expression and promoter activity (2016)
Journal Article
Lewis, J. E., Brameld, J. M., Hill, P., Wilson, D., Barrett, P., Ebling, F. J., & Jethwa, P. H. (2016). Thyroid hormone and vitamin D regulate VGF expression and promoter activity. Journal of Molecular Endocrinology, 56(2), 123-134. https://doi.org/10.1530/JME-15-0224

The Siberian hamster (Phodopus sungorus) survives winter by decreasing food intake and catabolizing abdominal fat reserves, resulting in a sustained, profound loss of body weight. Hypothalamic tanycytes are pivotal for this process. In these cells, s... Read More about Thyroid hormone and vitamin D regulate VGF expression and promoter activity.

The use of viral 2A sequence for the simultaneous over-expression of both the vgf gene and enhanced green fluorescent protein eGFP (2015)
Journal Article
Lewis, J. E., Brameld, J. M., Hill, P., Barrett, P., Ebling, F. J., & Jethwa, P. (in press). The use of viral 2A sequence for the simultaneous over-expression of both the vgf gene and enhanced green fluorescent protein eGFP. Journal of Neuroscience Methods, 256, https://doi.org/10.1016/j.jneumeth.2015.08.013

Introduction: The viral 2A sequence has become an attractive alternative to the traditional internal ribosomal entry site (IRES) for simultaneous over-expression of two genes and in combination with recombinant adeno-associated viruses (rAAV) has bee... Read More about The use of viral 2A sequence for the simultaneous over-expression of both the vgf gene and enhanced green fluorescent protein eGFP.

Neuroendocrine role for VGF (2015)
Journal Article
Lewis, J. E., Brameld, J. M., & Jethwa, P. H. (2015). Neuroendocrine role for VGF. Frontiers in Endocrinology, 6, doi:10.3389/fendo.2015.00003

Peripheral administration of prokineticin 2 potently reduces food intake and body weight in mice via the brainstem (2012)
Journal Article
Beale, K., Gardiner, J., Bewick, G., Hostomska, K., Patel, N., Hussain, S., …Dhillo, W. (2013). Peripheral administration of prokineticin 2 potently reduces food intake and body weight in mice via the brainstem. British Journal of Pharmacology, 168(2), 403-410. https://doi.org/10.1111/j.1476-5381.2012.02191.x

Background and Purpose Prokineticin 2 (PK2) has recently been shown to acutely reduce food intake in rodents. We aimed to determine the CNS sites and receptors that mediate the anorectic effects of peripherally administered PK2 and its chronic effect... Read More about Peripheral administration of prokineticin 2 potently reduces food intake and body weight in mice via the brainstem.

Effects of manipulating hypothalamic triiodothyronine concentrations on seasonal body weight and torpor cycles in Siberian hamsters (2012)
Journal Article
Murphy, M., Jethwa, P. H., Warner, A., Barrett, P., Nilaweera, K. N., Brameld, J. M., & Ebling, F. J. (2012). Effects of manipulating hypothalamic triiodothyronine concentrations on seasonal body weight and torpor cycles in Siberian hamsters. Endocrinology, 153(1), 101-112. https://doi.org/10.1210/en.2011-1249

Siberian hamsters display photoperiodically regulated annual cycles in body weight, appetite, and reproduction. Previous studies have revealed a profound up-regulation of type 3 deiodinase (DIO3) mRNA in the ventral ependyma of the hypothalamus assoc... Read More about Effects of manipulating hypothalamic triiodothyronine concentrations on seasonal body weight and torpor cycles in Siberian hamsters.

Histaminergic regulation of seasonal metabolic rhythms in Siberian hamsters (2011)
Journal Article
I'Anson, H., Jethwa, P. H., Warner, A., & Ebling, F. J. (2011). Histaminergic regulation of seasonal metabolic rhythms in Siberian hamsters. Physiology and Behavior, 103(3-4), 268-278. https://doi.org/10.1016/j.physbeh.2011.02.035

We investigated whether histaminergic tone contributes to the seasonal catabolic state in Siberian hamsters by determining the effect of ablation of histaminergic neurons on food intake, metabolic rate and body weight. A ribosomal toxin (saporin) con... Read More about Histaminergic regulation of seasonal metabolic rhythms in Siberian hamsters.

Effects of photoperiod on daily locomotor activity, energy expenditure, and feeding behavior in a seasonal mammal (2010)
Journal Article
Warner, A., Jethwa, P. H., Wyse, C. A., I'Anson, H., Brameld, J. M., & Ebling, F. J. (2010). Effects of photoperiod on daily locomotor activity, energy expenditure, and feeding behavior in a seasonal mammal. AJP - Regulatory, Integrative and Comparative Physiology, 298(5), R1409-R1416. https://doi.org/10.1152/ajpregu.00279.2009

The objective of this study was to determine whether the previously observed effects of photoperiod on body weight in Siberian hamsters were due to changes in the daily patterns of locomotor activity, energy expenditure, and/or feeding behavior. Adul... Read More about Effects of photoperiod on daily locomotor activity, energy expenditure, and feeding behavior in a seasonal mammal.