Recombinant human leptin in women with hypothalamic amenorrhea - PubMed (original) (raw)
Clinical Trial
. 2004 Sep 2;351(10):987-97.
doi: 10.1056/NEJMoa040388.
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- PMID: 15342807
- DOI: 10.1056/NEJMoa040388
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Clinical Trial
Recombinant human leptin in women with hypothalamic amenorrhea
Corrine K Welt et al. N Engl J Med. 2004.
Free article
Abstract
Background: Disruptions in hypothalamic-gonadal and other endocrine axes due to energy deficits are associated with low levels of the adipocyte-secreted hormone leptin and may result in hypothalamic amenorrhea. We hypothesized that exogenous recombinant leptin replacement would improve reproductive and neuroendocrine function in women with hypothalamic amenorrhea.
Methods: Eight women with hypothalamic amenorrhea due to strenuous exercise or low weight were studied for one month before receiving recombinant human leptin and then while receiving treatment for up to three months. Six control subjects with hypothalamic amenorrhea received no treatment and were studied for a mean (+/-SD) of 8.5+/-8.1 months.
Results: Luteinizing hormone (LH) pulsatility, body weight, ovarian variables, and hormone levels did not change significantly over time in the controls and during a one-month control period before recombinant leptin therapy in the treated subjects. In contrast, recombinant leptin treatment increased mean LH levels and LH pulse frequency after two weeks and increased maximal follicular diameter, the number of dominant follicles, ovarian volume, and estradiol levels over a period of three months. Three patients had an ovulatory menstrual cycle (P<0.05 for the comparison with an expected rate of spontaneous ovulation of 10 percent); two others had preovulatory follicular development and withdrawal bleeding during treatment (P<0.05). Recombinant leptin significantly increased levels of free triiodothyronine, free thyroxine, insulin-like growth factor 1, insulin-like growth factor-binding protein 3, bone alkaline phosphatase, and osteocalcin but not cortisol, corticotropin, or urinary N-telopeptide.
Conclusions: Leptin administration for the relative leptin deficiency in women with hypothalamic amenorrhea appears to improve reproductive, thyroid, and growth hormone axes and markers of bone formation, suggesting that leptin, a peripheral signal reflecting the adequacy of energy stores, is required for normal reproductive and neuroendocrine function.
Copyright 2004 Massachusetts Medical Society
Comment in
- Body fat, leptin, and hypothalamic amenorrhea.
Ahima RS. Ahima RS. N Engl J Med. 2004 Sep 2;351(10):959-62. doi: 10.1056/NEJMp048214. N Engl J Med. 2004. PMID: 15342803 No abstract available. - Recombinant human leptin in women with hypothalamic amenorrhea.
LaMarca A, Volpe A. LaMarca A, et al. N Engl J Med. 2004 Nov 25;351(22):2343; author reply 2343. doi: 10.1056/NEJM200411253512221. N Engl J Med. 2004. PMID: 15564554 No abstract available.
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