PMID- 24810836 OWN - NLM STAT- MEDLINE DCOM- 20151110 LR - 20211021 IS - 1590-3478 (Electronic) IS - 1590-1874 (Linking) VI - 35 IP - 11 DP - 2014 Nov TI - Downregulation of dopamine D(1) receptors and increased neuronal apoptosis upon ethanol and PTZ exposure in prenatal rat cortical and hippocampal neurons. PG - 1681-8 LID - 10.1007/s10072-014-1812-7 [doi] AB - The objective of this study was to evaluate the effect of ethanol and pentylenetetrazol (PTZ) on the expression of dopamine receptors (D1R) and to observe the apoptotic neurodegeneration in prenatal rat cortical and hippocampal neurons at gestational days (GD) 17.5. In the present study, ethanol (100 mM) and PTZ (15 mM) were exposed to the prenatal rat cortical and hippocampal neuronal cell cultures for 1 h. For mRNA RT-PCR and for protein Western blot analysis was done to elucidate D1R, Bax, Bak, Bcl-2 and cleaved caspase-3 expression upon ethanol and PTZ exposure in neuronal cell cultures. Furthermore, ethanol and PTZ-induced apoptotic neurodegeneration was also observed using TUNEL staining and propidium iodide (PI) used as counter stain under confocal microscopy. The results of present study showed that ethanol and PTZ exposure significantly decreased D1R expression and induced neuronal death by significantly increasing the expression of pro-apoptotic Bax, Bak and decreasing anti-apoptotic protein Bcl-2 leading to the apoptosis by increasing cleaved caspase-3 expression in cortical and hippocampal primary neuronal cell cultures. Our findings indicated that ethanol and PTZ exposure to the prenatal neurons showed not only downregulation of D1R but also causes neuronal apoptosis in the developing rat brain. Further, this explains the possibility of higher risk of developmental disturbances and malformations during early developmental stage. FAU - Naseer, Muhammad Imran AU - Naseer MI AD - Center of Excellence in Genomic Medicine and Research (CEGMR), King Abdulaziz University, Jeddah, 21589, Saudi Arabia, mimrannaseer@yahoo.com. FAU - Ullah, Ikram AU - Ullah I FAU - Rasool, Mahmood AU - Rasool M FAU - Ansari, Shakeel Ahmed AU - Ansari SA FAU - Sheikh, Ishfaq Ahmed AU - Sheikh IA FAU - Bibi, Fehmida AU - Bibi F FAU - Chaudhary, Adeel Gulzar AU - Chaudhary AG FAU - Al-Qahtani, Mohammed H AU - Al-Qahtani MH FAU - Kim, Myeong Ok AU - Kim MO LA - eng PT - Journal Article DEP - 20140509 PL - Italy TA - Neurol Sci JT - Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology JID - 100959175 RN - 0 (Convulsants) RN - 0 (Receptors, Dopamine D1) RN - 3K9958V90M (Ethanol) RN - WM5Z385K7T (Pentylenetetrazole) SB - IM EIN - Neurol Sci. 2014 Nov;35(11):1689. Kim, Myeong Ok [added] MH - Animals MH - Apoptosis/*drug effects MH - Blotting, Western MH - Cells, Cultured MH - Cerebral Cortex/drug effects/metabolism/pathology MH - Convulsants/toxicity MH - Down-Regulation MH - Ethanol/*toxicity MH - Female MH - Hippocampus/*drug effects/metabolism/pathology MH - In Situ Nick-End Labeling MH - Neurons/*drug effects/metabolism/pathology MH - Pentylenetetrazole/toxicity MH - Pregnancy MH - Prenatal Exposure Delayed Effects/*metabolism/pathology MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Dopamine D1/*biosynthesis MH - Reverse Transcriptase Polymerase Chain Reaction EDAT- 2014/05/09 06:00 MHDA- 2015/11/11 06:00 CRDT- 2014/05/10 06:00 PHST- 2013/11/08 00:00 [received] PHST- 2014/04/23 00:00 [accepted] PHST- 2014/05/10 06:00 [entrez] PHST- 2014/05/09 06:00 [pubmed] PHST- 2015/11/11 06:00 [medline] AID - 10.1007/s10072-014-1812-7 [doi] PST - ppublish SO - Neurol Sci. 2014 Nov;35(11):1681-8. doi: 10.1007/s10072-014-1812-7. Epub 2014 May 9.