Dr Mohammed Rizwan

Contact Details
- Phone
- +64 3 470 3442
- mohammed.rizwan@.otago.ac.nz
University Links
- Position
- Research Fellow
- Department
- Department of Anatomy
- Qualifications
- BSc DipGradSci PGDipSci (Otago) PhD
- Research summary
- Neuroendocrine regulation of body weight and glucose homeostasis
Research
Working with Dr Alex Tups and Professor Dave Grattan's research groups. Research interest includes investigating mechanisms that causes leptin resistance, which is a hallmark of obesity, in response to high fat diet. And to understand the specific neuronal pathways involved in regulating bodyweight and glucose homeostasis.
Publications
Rizwan, M. Z., Kerbus, R., Kamstra, K., Keerthisinghe, P., & Tups, A. (2023). Dietary wheat gluten induces astro- and microgliosis in the hypothalamus of male mice. Journal of Neuroendocrinology, e13326. Advance online publication. doi: 10.1111/jne.13326
Pretz, D., Heyward, P. M., Krebs, J., Gruchot, J., Barter, C., Silcock, P., Downes, N., Rizwan, M. Z., Boucsein, A., Bender, J., Burgess, E. J., Boer, G. A., Keerthisinghe, P., Perry, N. B., & Tups, A. (2023). A dahlia flower extract has anti-diabetic properties by improving insulin function in the brain. Life Metabolism, 2(4), load026. doi: 10.1093/lifemeta/load026
Kamstra, K., Rizwan, M. Z., Grattan, D. R., Horsfield, J. A., & Tups, A. (2022). Leptin regulates glucose homeostasis via the canonical Wnt pathway in the zebrafish. FASEB Journal, 36, e22207. doi: 10.1096/fj.202101764R
Mamgain, A., Sawyer, I. L., Timajo, D. A. M., Rizwan, M. Z., Evans, M. C., Ancel, C. M., Inglis, M. A., & Anderson, G. M. (2021). RFamide-related peptide neurons modulate reproductive function and stress responses. Journal of Neuroscience, 41(3), 474-488. doi: 10.1523/JNEUROSCI.1062-20.2020
Pretz, D., Le Foll, C., Rizwan, M. Z., Lutz, T. A., & Tups, A. (2021). Hyperleptinemia as a contributing factor for the impairment of glucose intolerance in obesity. FASEB Journal, 35, e21216. doi: 10.1096/fj.202001147R
Pretz, D., Heyward, P. M., Krebs, J., Gruchot, J., Barter, C., Silcock, P., Downes, N., Rizwan, M. Z., Boucsein, A., Bender, J., Burgess, E. J., Boer, G. A., Keerthisinghe, P., Perry, N. B., & Tups, A. (2023). A dahlia flower extract has anti-diabetic properties by improving insulin function in the brain. Life Metabolism, 2(4), load026. doi: 10.1093/lifemeta/load026
Journal - Research Article
Rizwan, M. Z., Kerbus, R., Kamstra, K., Keerthisinghe, P., & Tups, A. (2023). Dietary wheat gluten induces astro- and microgliosis in the hypothalamus of male mice. Journal of Neuroendocrinology, e13326. Advance online publication. doi: 10.1111/jne.13326
Journal - Research Article
Kamstra, K., Rizwan, M. Z., Grattan, D. R., Horsfield, J. A., & Tups, A. (2022). Leptin regulates glucose homeostasis via the canonical Wnt pathway in the zebrafish. FASEB Journal, 36, e22207. doi: 10.1096/fj.202101764R
Journal - Research Article
Loehfelm, A., Rizwan, M. Z., & Tups, A. (2021). A New Zealand green-lipped mussel oil-enriched high-fat diet exhibits beneficial effects on body weight and metabolism in mice. British Journal of Nutrition, 125(9), 972-982. doi: 10.1017/s0007114520002342
Journal - Research Article
Mamgain, A., Sawyer, I. L., Timajo, D. A. M., Rizwan, M. Z., Evans, M. C., Ancel, C. M., Inglis, M. A., & Anderson, G. M. (2021). RFamide-related peptide neurons modulate reproductive function and stress responses. Journal of Neuroscience, 41(3), 474-488. doi: 10.1523/JNEUROSCI.1062-20.2020
Journal - Research Article
Pretz, D., Le Foll, C., Rizwan, M. Z., Lutz, T. A., & Tups, A. (2021). Hyperleptinemia as a contributing factor for the impairment of glucose intolerance in obesity. FASEB Journal, 35, e21216. doi: 10.1096/fj.202001147R
Journal - Research Article
Benzler, M., Benzler, J., Stoehr, S., Hempp, C., Rizwan, M. Z., Heyward, P., & Tups, A. (2019). "Insulin-like" effects of palmitate compromise insulin signalling in hypothalamic neurons. Journal of Comparative Physiology B, 189(3-4), 413-424. doi: 10.1007/s00360-019-01220-0
Journal - Research Article
Boucsein, A., Rizwan, M. Z., & Tups, A. (2019). Hypothalamic leptin sensitivity and health benefits of time-restricted feeding are dependent on the time of day in male mice. FASEB Journal, 33, 12175-12187. doi: 10.1096/fj.201901004R
Journal - Research Article
Skinner, N. J., Rizwan, M. Z., Grattan, D. R., & Tups, A. (2019). Chronic light cycle disruption alters central insulin and leptin signaling as well as metabolic markers in male mice. Endocrinology, 160(10), 2257-2270. doi: 10.1210/en.2018-00935
Journal - Research Article
Rizwan, M. Z., Mehlitz, S., Grattan, D. R., & Tups, A. (2017). Temporal and regional onset of leptin resistance in diet-induced obese mice. Journal of Neuroendocrinology, 29(10), e12481. doi: 10.1111/jne.12481
Journal - Research Article
Kim, J. S., Rizwan, M. Z., Clegg, D. J., & Anderson, G. M. (2016). Leptin signaling is not required for anorexigenic estradiol effects in female mice. Endocrinology, 157(5), 1991-2001. doi: 10.1210/en.2015-1594
Journal - Research Article
Evans, M. C., Rizwan, M. Z., & Anderson, G. M. (2015). Insulin does not target CamkIIα neurones to critically regulate the neuroendocrine reproductive axis in mice. Journal of Neuroendocrinology, 27(12), 899-910. doi: 10.1111/jne.12330
Journal - Research Article
Evans, M. C., Rizwan, M. Z., & Anderson, G. M. (2014). Insulin action on GABA neurons is a critical regulator of energy balance but not fertility in mice. Endocrinology, 155(11), 4368-4379. doi: 10.1210/en.2014-1412
Journal - Research Article
Evans, M. C., Rizwan, M., Mayer, C., Boehm, U., & Anderson, G. M. (2014). Evidence that insulin signalling in gonadotrophin-releasing hormone and kisspeptin neurones does not play an essential role in metabolic regulation of fertility in mice. Journal of Neuroendocrinology, 26(7), 468-479. doi: 10.1111/jne.12166
Journal - Research Article
Rizwan, M. Z., Harbid, A. A., Inglis, M. A., Quennell, J. H., & Anderson, G. M. (2014). Evidence that hypothalamic RFamide related peptide-3 neurones are not leptin-responsive in mice and rats. Journal of Neuroendocrinology, 26(4), 247-257. doi: 10.1111/jne.12140
Journal - Research Article
Rizwan, M. Z., Poling, M. C., Corr, M., Cornes, P. A., Augustine, R. A., Quennell, J. H., … Anderson, G. M. (2012). RFamide-related peptide-3 receptor gene expression in GnRH and kisspeptin neurons and GnRH-dependent mechanism of action. Endocrinology, 153(8), 3770-3779. doi: 10.1210/en.2012-1133
Journal - Research Article
Quennell, J. H., Rizwan, M. Z., Relf, H.-L., & Anderson, G. M. (2010). Developmental and steroidogenic effects on the gene expression of RFRP and its receptor in the rat brain and pituitary gland. Journal of Neuroendocrinology, 22, 309-316. doi: 10.1111/j.1365-2826.2010.01963.x
Journal - Research Article
Tups, A., Anderson, G. M., Rizwan, M., Augustine, R. A., Chaussade, C., Shepherd, P. R., & Grattan, D. R. (2010). Both p110α and p110β isoforms of phosphatidylinositol 3-OH-kinase are required for insulin signalling in the hypothalamus. Journal of Neuroendocrinology, 22(6), 534-542. doi: 10.1111/j.1365-2826.2010.01975.x
Journal - Research Article
Anderson, G. M., Relf, H.-L., Rizwan, M. Z., & Evans, J. J. (2009). Central and peripheral effects of RFamide-related peptide-3 on luteinizing hormone and prolactin secretion in rats. Endocrinology, 150(4), 1834-1840. doi: 10.1210/en.2008-1359
Journal - Research Article
Rizwan, M. Z., Porteous, R., Herbison, A. E., & Anderson, G. M. (2009). Cells expressing RFamide-related peptide-1/3, the mammalian gonadotropin-inhibitory hormone orthologs, are not hypophysiotropic neuroendocrine neurons in the rat. Endocrinology, 150(3), 1413-1420. doi: 10.1210/en.2008-1287
Journal - Research Article