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Abstract
Leuprolide acetate is a synthetic nonapeptide that is a potent gonadotropin-releasing hormone receptor (GnRHR) agonist used for diverse clinical applications, including the treatment of prostate cancer, endometriosis, uterine fibroids, central precocious puberty and in vitro fertilization techniques. As its basic mechanism of action, leuprolide acetate suppresses gonadotrope secretion of luteinizing hormone and follicle-stimulating hormone that subsequently suppresses gonadal sex steroid production. In addition, leuprolide acetate is presently being tested for the treatment of Alzheimer's disease, polycystic ovary syndrome, functional bowel disease, short stature, premenstrual syndrome and even as an alternative for contraception. Mounting evidence suggests that GnRH agonist suppression of serum gonadotropins may also be important in many of the clinical applications described above. Moreover, the presence of GnRHR in a multitude of non-reproductive tissues including the recent discovery of GnRHR expression in the hippocampi and cortex of the human brain indicates that GnRH analogs such as leuprolide acetate may also act directly via tissue GnRHRs to modulate (brain) function. Thus, the molecular mechanisms underlying the therapeutic effect of GnRH analogs in the treatment of these diseases may be more complex than originally thought. These observations also suggest that the potential uses of GnRH analogs in the modulation of GnRH signaling and treatment of disease has yet to be fully realized.
Keywords::
- Alzheimer's disease
- central precocious puberty
- contraception
- endometriosis
- functional bowel disease
- GnRH analog
- gonadotropin-releasing hormone
- gonadotropin-releasing hormone receptor
- in vitro fertilization
- leuprolide acetate
- polycystic ovary syndrome
- premenstrual syndrome
- prostate cancer
- short stature
- uterine leiomyomata
Acknowledgements
The authors wish to acknowledge the Alzheimer's Association and Veterans Administration for research support. This is GRECC manuscript number 2007-17.