PMID- 12364436 OWN - NLM STAT- MEDLINE DCOM- 20021030 LR - 20161124 IS - 0021-972X (Print) IS - 0021-972X (Linking) VI - 87 IP - 10 DP - 2002 Oct TI - Neurotrophin-4/5 and neurotrophin-3 are present within the human ovarian follicle but appear to have different paracrine/autocrine functions. PG - 4569-71 AB - Neurotrophins are a family of soluble polypeptide growth factors widely recognized for their role in the mammalian nervous system. We first reported the unique presence of one neurotrophin, brain-derived neurotrophic factor (BDNF), in the follicular fluid of the human ovarian follicle. The BDNF receptor, Trk B, was identified in mouse oocytes, and BDNF accelerated first polar body extrusion in vitro. In the present study, we examined human follicular fluid and mouse immature oocytes to determine whether another Trk B ligand, neurotrophin-4/5 (NT-4/5), is present within the ovarian follicle and if so, whether it demonstrates activity similar to that of BDNF. We also examined whether a non-Trk B neurotrophin ligand, neurotrophin-3 (NT-3), is present within the follicle and has a possible role in oocyte maturation. NT-4/5 and NT-3 were noted to be present in all human follicular fluid samples aspirated from follicles of women undergoing in vitro fertilization. NT-4/5, but not NT-3, significantly promoted mouse oocyte polar body extrusion. Trk C receptors were not noted to be present in mouse oocytes. This study demonstrates for the first time that NT-4/5 and NT-3 are present in the follicular fluid of the human ovary. These data suggest that NT-4/5, like BDNF, promotes oocyte nuclear maturation. In contrast, NT-3 does not promote oocyte maturation but may contribute to follicle-oocyte maturation by mechanisms not yet identified. FAU - Seifer, David B AU - Seifer DB AD - Department of Obstetrics, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, New Brunswick, New Jersey 08901, USA. seiferdb@umdnj.edu FAU - Feng, Bo AU - Feng B FAU - Shelden, Robert M AU - Shelden RM FAU - Chen, Shiling AU - Chen S FAU - Dreyfus, Cheryl F AU - Dreyfus CF LA - eng GR - AG 15425/AG/NIA NIH HHS/United States GR - HD 23315/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Clin Endocrinol Metab JT - The Journal of clinical endocrinology and metabolism JID - 0375362 RN - 0 (Nerve Growth Factors) RN - 0 (Neurotrophin 3) RN - 145172-44-7 (neurotrophin 5) RN - P658DCA9XD (neurotrophin 4) SB - IM MH - Adult MH - Animals MH - Female MH - Follicular Fluid/chemistry MH - Humans MH - Mice MH - Mice, Inbred C57BL MH - Nerve Growth Factors/analysis/pharmacology/*physiology MH - Neurotrophin 3/analysis/pharmacology/*physiology MH - Oocytes/drug effects/physiology MH - Ovarian Follicle/*chemistry EDAT- 2002/10/05 04:00 MHDA- 2002/11/01 04:00 CRDT- 2002/10/05 04:00 PHST- 2002/10/05 04:00 [pubmed] PHST- 2002/11/01 04:00 [medline] PHST- 2002/10/05 04:00 [entrez] AID - 10.1210/jc.2002-020499 [doi] PST - ppublish SO - J Clin Endocrinol Metab. 2002 Oct;87(10):4569-71. doi: 10.1210/jc.2002-020499.