PMID- 10217303 OWN - NLM STAT- MEDLINE DCOM- 19990506 LR - 20190630 IS - 0022-3042 (Print) IS - 0022-3042 (Linking) VI - 72 IP - 5 DP - 1999 May TI - Stimulation of adenylyl cyclase and induction of brain-derived neurotrophic factor and TrkB mRNA by NKH477, a novel and potent forskolin derivative. PG - 2198-205 AB - The present study was undertaken to examine whether NKH477, a novel and potent water-soluble forskolin derivative, stimulates adenylyl cyclase and regulates brain-derived neurotrophic factor (BDNF) and TrkB expression in the rat brain. Administration of NKH477 at a dose of 1.0 mg/kg, but not 0.1 mg/kg, increased levels of cyclic AMP (cAMP) in a time-dependent manner in frontal cortex and hippocampus. Repeated administration of NKH477 (1.0 mg/kg) for 7 or 14 days also increased levels of cAMP in these two brain regions, indicating that the response does not desensitize with chronic treatment. In addition, administration of NKH477 at the 1 mg/kg dose increased the expression of BDNF and TrkB mRNA in frontal cortex and hippocampus. This effect was observed after single, as well as repeated (7 or 14 days), administration of NKH477. These results demonstrate that NKH477 administration rapidly increases cAMP levels in brain and provides evidence that stimulation of this second messenger system increases the expression of BDNF and TrkB mRNA. FAU - Morinobu, S AU - Morinobu S AD - Department of Psychiatry, Shiga University of Medical Science, Otsu, Japan. FAU - Fujimaki, K AU - Fujimaki K FAU - Okuyama, N AU - Okuyama N FAU - Takahashi, M AU - Takahashi M FAU - Duman, R S AU - Duman RS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Neurochem JT - Journal of neurochemistry JID - 2985190R RN - 0 (Antidepressive Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - 0 (Receptor, Ciliary Neurotrophic Factor) RN - 0 (Receptors, Nerve Growth Factor) RN - 1F7A44V6OU (Colforsin) RN - E0399OZS9N (Cyclic AMP) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) RN - EC 4.6.1.1 (Adenylyl Cyclases) SB - IM MH - Adenylyl Cyclases/*metabolism MH - Animals MH - Antidepressive Agents/*pharmacology MH - Blotting, Northern MH - Brain/metabolism MH - Brain-Derived Neurotrophic Factor/*genetics MH - Colforsin/*analogs & derivatives/pharmacology MH - Cyclic AMP/metabolism MH - Frontal Lobe/metabolism MH - Hippocampus/metabolism MH - In Situ Hybridization MH - Male MH - RNA, Messenger/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Receptor Protein-Tyrosine Kinases/*genetics MH - Receptor, Ciliary Neurotrophic Factor MH - Receptors, Nerve Growth Factor/*genetics MH - Time Factors EDAT- 1999/04/27 00:00 MHDA- 1999/04/27 00:01 CRDT- 1999/04/27 00:00 PHST- 1999/04/27 00:00 [pubmed] PHST- 1999/04/27 00:01 [medline] PHST- 1999/04/27 00:00 [entrez] AID - 10.1046/j.1471-4159.1999.0722198.x [doi] PST - ppublish SO - J Neurochem. 1999 May;72(5):2198-205. doi: 10.1046/j.1471-4159.1999.0722198.x.