Cited by 482Hypothalamic control of reproductive hormonesRegulation of Appetite and ObesitySperm and Testicular Function

Leptin Treatment Rescues the Sterility of Genetically Obese ob/ob Males*

Mounzih, Khalid, Lu, Ronghua, Chehab, Farid F.·1997·Endocrinology

Abstract

Leptin, a hormone secreted from white adipose tissue, has been shown to normalize the body weight of ob/ob but not db/db mice as postulated by Coleman in his classical parabiosis experiments. The major effect of leptin is therefore to decrease food intake, thus resulting in a breakdown of fat stores. Recently, we have suggested that leptin plays a role in reproductive physiology based on the observation that leptin treatment but not food restriction rescues the sterility of ob/ob females. In the present communication, we treated sterile ob/ob males with leptin and asked whether fertility could be induced, thus selecting their reproductive ability as the endpoint of the experiment. Our results show that all food-restricted ob/ob males are unable to impregnate normal C57BL/6J females. However, all leptin-treated ob/ob males fertilized normal females mice that carried out normal pregnancies and deliveries, demonstrating that the reproductive capacity of ob/ob males was corrected only with leptin treatment. Furthermore, reproductive indices such as testicular weight and histology are normalized in leptin-treated animals. Therefore, as in ob/ob females, leptin plays a significant role in the male mouse reproductive pathways.

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Crossref · 10.1210/endo.138.3.5024

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Authors
Mounzih, K., Lu, R., & Chehab, F. F.
Affiliations
University of California, San Francisco (US)
Venue
Endocrinology
Published
1997-03-01
Volume
138
Issue
3
Pages
1190-1193
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W1997157145
Cited by
482
References
26
Citations by year
2026: 3 · 2025: 3 · 2024: 9 · 2023: 6 · 2022: 7 · 2021: 11 · 2020: 14 · 2019: 10 · 2018: 21 · 2017: 19 · 2016: 17 · 2015: 11 · 2014: 20 · 2013: 24 · 2012: 20
FWCI
26.15
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of California, San Francisco
  • National Heart, Lung, and Blood Institute (HLS-53762)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Reproductive Medicine › Sperm and Testicular Function
Keywords
leptin, ob/ob mice, male infertility, reproductive capacity, dietary restriction, testicular histology, testicular weight, obesity, reproductive physiology
MeSH terms
Animals, Body Weight, Eating, Female, Fertility, Infertility, Male, Obesity, Organ Size, Proteins, Testis, Leptin, Mice

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