PMID- 25451288 OWN - NLM STAT- MEDLINE DCOM- 20151230 LR - 20231213 IS - 1873-7544 (Electronic) IS - 0306-4522 (Linking) VI - 284 DP - 2015 Jan 22 TI - Effect of actual long-term spaceflight on BDNF, TrkB, p75, BAX and BCL-XL genes expression in mouse brain regions. PG - 730-736 LID - S0306-4522(14)00917-8 [pii] LID - 10.1016/j.neuroscience.2014.10.045 [doi] AB - Mice of C57BL/6J strain were exposed to 1-month spaceflight on Russian biosatellite Bion-M1 to determine the effect of long-term actual spaceflight on the expression of genes involved in the processes of neurogenesis and apoptosis. Specifically, we focused on the genes encoding proapoptotic factor BAX, antiapoptotic factor BCL-XL, brain-derived neurotrophic factor (BDNF) and BDNF receptors TrkB and p75. Spaceflight reduced the expression of the antiapoptotic BCL-XL gene in the striatum and hypothalamus, but increased it in the hippocampus. To estimate environmental stress contribution into spaceflight effects we analyzed spaceflight-responsive genes in mice housed for 1 month on Earth in the same shuttle cabins that were used for spaceflight, and in mice of the laboratory control group. It was shown that 1-month shuttle cabin housing decreased BCL-XL gene expression in the striatum but failed to alter BCL-XL mRNA levels in the hippocampus or hypothalamus. Spaceflight failed to alter the expression of the proapoptotic BAX gene in all investigated brain structures, although the insignificant increase of the BAX mRNA level in the hippocampus of spaceflight mice was found. At the same time, shuttle cabin housing produced insignificant decrease in BAX gene expression in the hippocampus. In contrast to the BCL-XL gene, genes encoding BAX, BDNF as well as TrkB and p75 receptors did not respond to 30-day spaceflight. Thus, long-term spaceflight (1) did not affect the expression of genes encoding BDNF as well as TrkB and p75 receptors, (2) produced dysregulation in genetic control of the neuronal apoptosis, (3) implicated BCL-XL as the risk factor for spaceflight-induced behavioral abnormalities. CI - Copyright (c) 2014 IBRO. Published by Elsevier Ltd. All rights reserved. FAU - Naumenko, V S AU - Naumenko VS AD - Institute of Cytology and Genetics, Lavrentyeva Avenue, 10, 633090 Novosibirsk, Russia. Electronic address: naumenko2002@bionet.nsc.ru. FAU - Kulikov, A V AU - Kulikov AV AD - Institute of Cytology and Genetics, Lavrentyeva Avenue, 10, 633090 Novosibirsk, Russia. FAU - Kondaurova, E M AU - Kondaurova EM AD - Institute of Cytology and Genetics, Lavrentyeva Avenue, 10, 633090 Novosibirsk, Russia. FAU - Tsybko, A S AU - Tsybko AS AD - Institute of Cytology and Genetics, Lavrentyeva Avenue, 10, 633090 Novosibirsk, Russia. FAU - Kulikova, E A AU - Kulikova EA AD - Institute of Cytology and Genetics, Lavrentyeva Avenue, 10, 633090 Novosibirsk, Russia. FAU - Krasnov, I B AU - Krasnov IB AD - Institute of Biomedical Problems, Khoroshevskoe Street, 76a, 123007 Moscow, Russia. FAU - Shenkman, B S AU - Shenkman BS AD - Institute of Biomedical Problems, Khoroshevskoe Street, 76a, 123007 Moscow, Russia. FAU - Sychev, V N AU - Sychev VN AD - Institute of Biomedical Problems, Khoroshevskoe Street, 76a, 123007 Moscow, Russia. FAU - Bazhenova, E Y AU - Bazhenova EY AD - Institute of Cytology and Genetics, Lavrentyeva Avenue, 10, 633090 Novosibirsk, Russia. FAU - Sinyakova, N A AU - Sinyakova NA AD - Institute of Cytology and Genetics, Lavrentyeva Avenue, 10, 633090 Novosibirsk, Russia. FAU - Popova, N K AU - Popova NK AD - Institute of Cytology and Genetics, Lavrentyeva Avenue, 10, 633090 Novosibirsk, Russia. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141104 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Bax protein, mouse) RN - 0 (Bcl2l1 protein, mouse) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Nerve Growth Factor) RN - 0 (Ngfr protein, mouse) RN - 0 (bcl-2-Associated X Protein) RN - 0 (bcl-X Protein) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Animals MH - Brain/*metabolism MH - Brain-Derived Neurotrophic Factor/metabolism MH - Gene Expression MH - Housing, Animal MH - Male MH - Mice, Inbred C57BL MH - RNA, Messenger/metabolism MH - Receptor, trkB/metabolism MH - Receptors, Nerve Growth Factor/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - *Space Flight MH - Stress, Physiological/physiology MH - bcl-2-Associated X Protein/metabolism MH - bcl-X Protein/metabolism OTO - NOTNLM OT - BAX, BCL-X(L), BDNF, TrkB, p75 genes expression OT - environmental stress OT - mice OT - microgravity OT - spaceflight EDAT- 2014/12/03 06:00 MHDA- 2015/12/31 06:00 CRDT- 2014/12/03 06:00 PHST- 2014/09/04 00:00 [received] PHST- 2014/10/24 00:00 [revised] PHST- 2014/10/26 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2015/12/31 06:00 [medline] AID - S0306-4522(14)00917-8 [pii] AID - 10.1016/j.neuroscience.2014.10.045 [doi] PST - ppublish SO - Neuroscience. 2015 Jan 22;284:730-736. doi: 10.1016/j.neuroscience.2014.10.045. Epub 2014 Nov 4.