PMID- 10081916 OWN - NLM STAT- MEDLINE DCOM- 19990506 LR - 20190701 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 261 IP - 1-2 DP - 1999 Feb 12 TI - Evidence for up-regulation of brain-derived neurotrophic factor mRNA by soy phytoestrogens in the frontal cortex of retired breeder female rats. PG - 17-20 AB - In this study, we examined the effects of oral micronized estradiol and soy phytoestrogens on the mRNA levels of brain-derived neurotrophic factor (BDNF) in the frontal cortex of ovariectomized retired breeder female rats. Fifteen ovariectomized rats were randomized into three groups and fed either a soy-free control diet (OVX), a control diet with added soybean estrogens (SBE), or a control diet with added estradiol (E2) for 8 weeks. Frontal cortex samples were collected for RNA isolation. Northern and Phosphorlmager analyses were used to determine the relative levels of BDNF mRNA. Both estradiol and soy phytoestrogens significantly increased the mRNA levels of BDNF compared to ovariectomized controls, suggesting that soy phytoestrogens may act as estrogen agonists in regulating BDNF mRNA in the frontal cortex of retired breeder female rats. FAU - Pan, Y AU - Pan Y AD - Comparative Medicine Clinical Research Center, Wake Forest University School of Medicine, Winston-Salem, NC 27157-1040, USA. ypan@cpm.bgsm.edu FAU - Anthony, M AU - Anthony M FAU - Clarkson, T B AU - Clarkson TB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Actins) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (DNA Probes) RN - 0 (Estrogens, Non-Steroidal) RN - 0 (Isoflavones) RN - 0 (Phosphorus Radioisotopes) RN - 0 (Phytoestrogens) RN - 0 (Plant Preparations) RN - 0 (RNA, Messenger) RN - 0 (Soybean Proteins) SB - IM MH - Actins/genetics MH - Age Factors MH - Animals MH - Brain Chemistry/drug effects MH - Brain-Derived Neurotrophic Factor/*genetics/metabolism MH - Cognition/physiology MH - DNA Probes MH - Estrogens, Non-Steroidal/*pharmacology MH - Female MH - Frontal Lobe/chemistry/drug effects/*metabolism MH - *Isoflavones MH - Ovariectomy MH - Phosphorus Radioisotopes MH - Phytoestrogens MH - Plant Preparations MH - RNA, Messenger/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Reproduction MH - Reverse Transcriptase Polymerase Chain Reaction MH - Soybean Proteins/*pharmacology EDAT- 1999/03/19 00:00 MHDA- 1999/03/19 00:01 CRDT- 1999/03/19 00:00 PHST- 1999/03/19 00:00 [pubmed] PHST- 1999/03/19 00:01 [medline] PHST- 1999/03/19 00:00 [entrez] AID - S0304-3940(98)00994-X [pii] AID - 10.1016/s0304-3940(98)00994-x [doi] PST - ppublish SO - Neurosci Lett. 1999 Feb 12;261(1-2):17-20. doi: 10.1016/s0304-3940(98)00994-x.