PMID- 19439119 OWN - NLM STAT- MEDLINE DCOM- 20100511 LR - 20171116 IS - 1003-0603 (Print) IS - 1003-0603 (Linking) VI - 21 IP - 5 DP - 2009 May TI - [The influence of hypoxia inducible factor-1 alpha expression on apoptosis and proliferation of T lymphocyte in the Peyer's patches after burn with delayed fluid resuscitation in rats at high altitude]. PG - 296-9 AB - OBJECTIVE: To explore the influence of hypoxia inducible factor-1 alpha (HIF-1 alpha) expression on the apoptosis and proliferation of T lymphocyte after severe burn with delayed fluid resuscitation at different altitude in rats. METHODS: One hundred and thirty-two Wistar rats were subjected to burn injury [30% total body surface area (TBSA), III degree], at 1,517 metres and 3,848 metres above sea level, and they were randomly divided into three groups: delayed fluid resuscitation group (DFR, n=30 at each altitude), immediate fluid resuscitation group (IFR, n=30 at each altitude), and sham group (SG, n=6). The Peyer's patches were harvested from the ileum of rats at 6, 12, 24, 48 and 72 hours after burn respectively. The levels of HIF-1 alpha, CD3(+) and the rate of apoptosis in Peyer's patches were detected by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL), tissue microarray technology and immunohistochemistry. RESULTS: The apoptosis rate in Peyer's patches was higher in DFR group than that in IFR group. The increase in HIF-1 alpha expression was observed mainly on cell nucleus in T lymphocytes. The expression levels of HIF-1 alpha in Peyer's patches were much higher in DFR group and IFR group than those in SG, and they were higher at 3 848 metres than those at 1 517 metres, and also higher in DFR group compared with IFR group (all P<0.05). The decrease in CD3(+) expression was observed mainly on cell membrane in T lymphocytes. The expression levels of CD3(+) in Peyer's patches were much higher in DFR group and IFR group than those in SG group, and the trough value appeared at 12 hours after burn (all P<0.05). CONCLUSION: High expression of HIF-1 alpha may be responsible for the high apoptosis rate and decrease of T lymphocyte number in Peyer's patches after severe burn with delayed fluid resuscitation in rats at high altitude. FAU - Ma, Ming AU - Ma M AD - Lanzhou General Hospital of Lanzhou Military Region, Lanzhou 730050, Gansu, China. FAU - Zhang, Cheng AU - Zhang C FAU - Liu, Yi AU - Liu Y FAU - Zhou, Wen-jun AU - Zhou WJ FAU - Zhang, Shi-fan AU - Zhang SF LA - chi PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhongguo Wei Zhong Bing Ji Jiu Yi Xue JT - Zhongguo wei zhong bing ji jiu yi xue = Chinese critical care medicine = Zhongguo weizhongbing jijiuyixue JID - 9887521 RN - 0 (CD3 Complex) RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) SB - IM MH - Altitude MH - Animals MH - Apoptosis MH - Burns/immunology/*metabolism/therapy MH - CD3 Complex/metabolism MH - Cell Proliferation MH - Disease Models, Animal MH - Female MH - Hypoxia-Inducible Factor 1, alpha Subunit/*metabolism MH - Male MH - Peyer's Patches/immunology/*metabolism/pathology MH - Random Allocation MH - Rats MH - Rats, Wistar MH - Resuscitation MH - T-Lymphocytes/*immunology/pathology EDAT- 2009/05/15 09:00 MHDA- 2010/05/12 06:00 CRDT- 2009/05/15 09:00 PHST- 2009/05/15 09:00 [entrez] PHST- 2009/05/15 09:00 [pubmed] PHST- 2010/05/12 06:00 [medline] PST - ppublish SO - Zhongguo Wei Zhong Bing Ji Jiu Yi Xue. 2009 May;21(5):296-9.