PMID- 10320759 OWN - NLM STAT- MEDLINE DCOM- 19990712 LR - 20190831 IS - 0165-3806 (Print) IS - 0165-3806 (Linking) VI - 114 IP - 2 DP - 1999 May 14 TI - Forskolin-induced expression of tyrosine hydroxylase in human foetal brain cortex. PG - 201-6 AB - Brain-derived neurotrophic factor (BDNF) has previously been shown by this and other laboratories to work in concert with dopamine (DA) to induce the dopaminergic phenotype in foetal rat and human cerebral cortex during specified sensitive developmental stages. In the present study this induction by BDNF/DA was found to be greatly amplified by adding forskolin (fsk: 10 microM) to the rat and human cerebral cortex cultures together with DA (10 microM) and BDNF (50 ng/ml). This amplification was 14-fold for human tissue and 2-fold for rat tissue treated over an 80% shorter period. Compared to treatment with BDNF alone, the additional fsk increased tyrosine hydroxylase-positive (TH+) cell numbers by 220-fold in the human and 26-fold in the rat tissue. Parallel reverse transcription-polymerase chain reaction (RT-PCR) measurement of TH mRNA showed substantial increases above control levels when BDNF/DA or BDNF/DA/fsk treatments were applied. Since fsk boosts intracellular levels of cyclic AMP (cAMP), its amplifying action when added together with BDNF/DA is likely to be due to interactions via the cAMP response element/cAMP response element binding protein (CRE/CREB) systems. This is discussed. CI - Copyright 1999 Elsevier Science B.V. FAU - Pliego Rivero, F B AU - Pliego Rivero FB AD - Imperial College of Science, Technology and Medicine, Department of Biochemistry, South Kensington, London SW7 2AY, UK. FAU - McCormack, W J AU - McCormack WJ FAU - Jauniaux, E AU - Jauniaux E FAU - Stern, G M AU - Stern GM FAU - Bradford, H F AU - Bradford HF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Brain Res Dev Brain Res JT - Brain research. Developmental brain research JID - 8908639 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (DNA Primers) RN - 0 (RNA, Messenger) RN - 1F7A44V6OU (Colforsin) RN - EC 1.14.16.2 (Tyrosine 3-Monooxygenase) RN - VTD58H1Z2X (Dopamine) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/pharmacology MH - Cells, Cultured MH - Cerebral Cortex/embryology/*enzymology MH - Colforsin/*pharmacology MH - DNA Primers MH - Dopamine/pharmacology MH - Embryo, Mammalian MH - Fetus MH - Gene Expression Regulation, Enzymologic/*drug effects MH - Humans MH - Neurons/*enzymology MH - RNA, Messenger/genetics MH - Rats MH - Rats, Sprague-Dawley MH - Reverse Transcriptase Polymerase Chain Reaction MH - Transcription, Genetic/*drug effects MH - Tyrosine 3-Monooxygenase/analysis/*genetics EDAT- 1999/05/13 00:00 MHDA- 1999/05/13 00:01 CRDT- 1999/05/13 00:00 PHST- 1999/05/13 00:00 [pubmed] PHST- 1999/05/13 00:01 [medline] PHST- 1999/05/13 00:00 [entrez] AID - S0165380699000346 [pii] AID - 10.1016/s0165-3806(99)00034-6 [doi] PST - ppublish SO - Brain Res Dev Brain Res. 1999 May 14;114(2):201-6. doi: 10.1016/s0165-3806(99)00034-6.