The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
Low plasma leptin levels contribute to diabetic hyperphagia in rats.
Abstract
The adipocyte hormone leptin reduces food intake in normal animals. During uncontrolled type 1 diabetes, plasma leptin levels fall, whereas food intake increases. To test the hypothesis that low leptin levels contribute to diabetic hyperphagia, we investigated the effect on food intake of replacement of leptin at basal plasma concentrations for 7 days in Long-Evans rats with uncontrolled diabetes induced by streptozotocin (STZ). One group of STZ diabetic rats received saline (STZ + Sal) (n = 11), while the other group (STZ + Lep) (n = 15) received a subcutaneous infusion of recombinant rat leptin (100 microg x kg(-1) x day(-1)) via osmotic minipumps. A nondiabetic control group (Con) (n = 11) received saline only. In the STZ + Sal group, plasma leptin levels decreased by 75% (P < 0.05) from 2.4+/-0.5 on the day before STZ/citrate buffer vehicle (Veh) injection (day 0) to 0.6+/-0.2 ng/ml on day 7. In contrast, plasma leptin levels on days 3-7 were comparable to pretreatment values in both the STZ + Lep group (day 0: 2.6+/-0.4 vs. day 7: 2.5+/-0.3 ng/ml, NS) and the Con group (day 0: 3.8+/-0.4 vs. day 7: 2.9+/-1.0 ng/ml, NS). In the STZ + Sal group, daily food intake increased gradually to values 43% above basal by day 7 (day 0: 24+/-2 to day 7: 33+/-3 g, P < 0.05), whereas food intake did not increase in either the STZ + Lep group (day 0: 24+/-1 vs. day 7: 21+/-2 g, NS), or the Con group (day 0: 23+/-1 vs. day 7: 23+/-2 g). Plasma glucose levels exceeded nondiabetic control values (7.7+/-0.2 mmol/l) in both diabetic groups, but were lower in the STZ + Lep group (17.2+/-1.8 mmol/l) than in the STZ + Sal group (24.3+/-1.1 mmol/l, P < 0.05). To determine if sensitivity to leptin-induced anorexia was affected by STZ treatment, a second experiment was performed in which the effect of intracerebroventricular leptin injection (at doses of 0.35, 1.0, or 3.5 microg) on food intake was measured 10 days after STZ or Veh treatment. Leptin suppressed both 4- and 24-h food intake in the two groups to an equal extent at every dose (by 15, 22, and 35%, respectively). These findings support the hypothesis that the effect of uncontrolled diabetes to lower leptin levels contributes to diabetic hyperphagia and that this effect is not due to altered leptin sensitivity.
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“reduction in the plasma level of both leptin and insulin is implicated in the pathogenesis of diabetic hyperphagia in rats treated with streptozotocin (STZ) (173)”
From Leptin and the Central Nervous System Control of Glucose Metabolism (2011) · cites this paper as [173]
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Cites
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Schwartz, M. W., Figlewicz, D. P., Baskin, D. G., Woods, S. C., & Porte, D. (1992) · Endocrine Reviews · doi:10.1210/edrv-13-3-387 · Cited by 808
Self-citationInhibition of hypothalamic neuropeptide Y gene expression by insulin.
Schwartz, M. W., Sipols, A. J., Marks, J. L., Sanacora, G., White, J. D., Scheurink, A., Kahn, S. E., Baskin, D. G., Woods, S. C., & Figlewicz, D. P. (1992) · Endocrinology · doi:10.1210/endo.130.6.1597158 · Cited by 555
Self-citationHavel, P. J., Kasim-karakas, S., Mueller, W. M., Johnson, P. R., Gingerich, R. L., & Stern, J. S. (1996) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jcem.81.12.8954050 · Cited by 412
Self-citationEffect of Fasting, Refeeding, and Dietary Fat Restriction on Plasma Leptin Levels
Weigle, D. S. (1997) · Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.82.2.561 · Cited by 287
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Self-citationKinetics and specificity of insulin uptake from plasma into cerebrospinal fluid.
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Self-citationThe Effect of Leptin Is Enhanced by Microinjection Into the Ventromedial Hypothalamus
Jacob, R. J., Dziura, J. D., Medwick, M. B., Leone, P., Caprio, S., During, M. J., Shulman, G. I., & Sherwin, R. (1997) · Diabetes · doi:10.2337/diab.46.1.150 · Cited by 134
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Cited by
Sorted by citations
Central nervous system control of food intake
Schwartz, M. W., Woods, S. C., Porte, D., Seeley, R. J., & Baskin, D. G. (2000) · Nature · doi:10.1038/35007534 · Cited by 6,451
Self-citationNeuroendocrine control of food intake
Valassi, E., Scacchi, M., & Cavagnini, F. (2008) · Nutrition Metabolism and Cardiovascular Diseases · doi:10.1016/j.numecd.2007.06.004 · Cited by 649
Havel, P. J. (2004) · Diabetes · doi:10.2337/diabetes.53.2007.s143 · Cited by 628
Self-citationHavel, P. J. (2002) · Current Opinion in Lipidology · doi:10.1097/00041433-200202000-00008 · Cited by 575
Self-citationHavel, P. J. (2001) · Experimental Biology and Medicine · doi:10.1177/153537020122601102 · Cited by 486
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Metadata
- Authors
- Sindelar, D. K., Havel, P. J., Seeley, R. J., Wilkinson, C. W., Woods, S. C., & Schwartz, M. W.
- Affiliations
- University of Washington (US)
- Venue
- Diabetes
- Publisher
- American Diabetes Association
- Published
- 1999-06-01
- Volume
- 48
- Issue
- 6
- Pages
- 1275-1280
- ISSN
- 0012-1797 (ISSN-L)
- 1939-327X
- OpenAlex
- W2130115423
- Cited by
- 119
- References
- 11
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2021: 2 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 4 · 2016: 5 · 2015: 7 · 2014: 2 · 2013: 3 · 2012: 4
- FWCI
- 2.52
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Diabetes (publishedVersion)
- PubMed (publishedVersion)
- ResearchWorks at the University of Washington (University of Washington) (submittedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- Funders
- National Institute of Diabetes and Digestive and Kidney Diseases (DK-52989-01, DK 50129, R01DK052989, R01DK050129)
- National Institute of Neurological Disorders and Stroke (NS-32273)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adipokines, Inflammation, and Metabolic Diseases
- Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
- Keywords
- leptin, type 1 diabetes, streptozotocin-induced diabetes, dietary intake, plasma leptin, Long-Evans rats, plasma glucose, leptin resistance, adipokines, insulin resistance, leptin receptor, leptin signaling
- MeSH terms
- Animals, Blood Glucose, Diabetes Mellitus, Diabetes Mellitus, Experimental, Hyperphagia, Insulin, Male, Obesity, Proteins, Rats, Long-Evans, Leptin, Rats
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