Effects of seawater immersion on the functions of mitochondria of myocardium and hepatocyte in hemorrhagic shock rats.
OBJECTIVE
To investigate the effects of seawater immersion on the function of myocardium and hepatocyte mitochondria in experimental hemorrhagic shock rats.


METHODS
Twenty-four male Wistar rats were divided into three groups (n=8 in each group): control group, HSL group (hemorrhagic shock group on land) and HSS group (hemorrhagic shock group in seawater). The hemodynamic parameters, activities of H(+)-ATPase (adenosinetriphosphatase), succinate dehydrogenase (SDH) and Ca(2+)-Mg(2+)-ATPase, the calcium contents in myocardium and hepatocyte mitochondria were measured and the changes of proton translocation across the inner mitochondrial membrane were analyzed.


RESULTS
The hemodynamic indexes and the activities of H+-ATPase, SDH, Ca(2+)-Mg(2+)-ATPase in HSS group were significantly lower than those in control group and HSL group (P<0.05). In HSS group the calcium levels in tissue and mitochondria of myocardium and hepatocyte were elevated significantly compared with control group and HSL group (P<0.05). There was no significant difference in proton translocation among three groups.


CONCLUSIONS
This investigation demonstrates that seawater immersion can aggravate the conditions of hemorrhagic shock rats.
Lu
Song-min
SM
2nd Department, Research Institute of Field Surgery, Third Military Medical University, Chongqing 400042, China. lsm4266@yahoo.com.cn
Liu
Jian-cang
JC
Shi
Cheng-he
CH
Li
Ping
P
Lu
Qing-jun
QJ
D000818:Animals; D002118:Calcium / Q000378:metabolism; D007101:Immersion; D008297:Male; D008929:Mitochondria, Heart / Q000201:enzymology*; D008930:Mitochondria, Liver / Q000201:enzymology*; D006180:Proton-Translocating ATPases / Q000378:metabolism; D011897:Random Allocation; D051381:Rats; D017208:Rats, Wistar; D012623:Seawater; D012771:Shock, Hemorrhagic / Q000201:enzymology* / Q000503:physiopathology*
D006180:Proton-Translocating ATPases; D002118:Calcium