PMID- 15782555 OWN - NLM STAT- MEDLINE DCOM- 20050411 LR - 20161124 IS - 1214-6994 (Print) IS - 1214-6994 (Linking) VI - 105 IP - 3 DP - 2004 TI - Hypoxia-induced long-term increase of dopamine and tyrosine hydroxylase mRNA levels. PG - 291-300 AB - The aim of the present study was to determine hypoxia-induced changes in the long-term expression of tyrosine hydroxylase (TH) mRNA and the steady-state dopamine (DA) levels in rat mesencephalic cell cultures. The cultures were exposed to hypoxia during the early developmental period, and DA content and TH mRNA expression were determined on day in vitro (DIV) 14. Hypoxic exposure of 5-day-old cultures resulted in increased DA (control 89.9+/-8.9, hypoxia 135.8+/-23.7 pg/microg protein) and TH mRNA (control 37.3+/-4.7, hypoxia 143.1+/-49.4 pg/microg RNA) levels. To analyze the involvement of hypoxia-inducible factor-1 (HIF-1) in these changes, we studied its activation using reporter gene. Hypoxia caused a 3-fold increase in HIF-1 activity. Our data suggest that hypoxia/ischemia during the putative critical developmental period of neurons may determine the tyrosine hydroxylase gene expression and, consequently, the development of the dopaminergic system. FAU - Leclere, N AU - Leclere N AD - Department of Otorhinolaryngology, Charite Hospital, Berlin, Germany. FAU - Andreeva, N AU - Andreeva N FAU - Fuchs, J AU - Fuchs J FAU - Kietzmann, T AU - Kietzmann T FAU - Gross, J AU - Gross J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Czech Republic TA - Prague Med Rep JT - Prague medical report JID - 101227436 RN - 0 (DNA-Binding Proteins) RN - 0 (Hif1a protein, rat) RN - 0 (Hypoxia-Inducible Factor 1) RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (Nuclear Proteins) RN - 0 (RNA, Messenger) RN - 0 (Transcription Factors) RN - EC 1.14.16.2 (Tyrosine 3-Monooxygenase) RN - VTD58H1Z2X (Dopamine) SB - IM MH - Animals MH - Cells, Cultured MH - DNA-Binding Proteins/metabolism MH - Dopamine/genetics/*metabolism MH - Gene Expression MH - Hypoxia/*metabolism MH - Hypoxia-Inducible Factor 1 MH - Hypoxia-Inducible Factor 1, alpha Subunit MH - Mesencephalon/*metabolism MH - Nuclear Proteins/metabolism MH - RNA, Messenger/*metabolism MH - Rats MH - Rats, Wistar MH - Transcription Factors/metabolism MH - Tyrosine 3-Monooxygenase/genetics/*metabolism EDAT- 2005/03/24 09:00 MHDA- 2005/04/12 09:00 CRDT- 2005/03/24 09:00 PHST- 2005/03/24 09:00 [pubmed] PHST- 2005/04/12 09:00 [medline] PHST- 2005/03/24 09:00 [entrez] PST - ppublish SO - Prague Med Rep. 2004;105(3):291-300.