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2015 ; 8
(6
): 6245-54
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English Wikipedia
An exogenous hydrogen sulphide donor, NaHS, inhibits the apoptosis signaling
pathway to exert cardio-protective effects in a rat hemorrhagic shock model
#MMPMID26261501
Xu Y
; Dai X
; Zhu D
; Xu X
; Gao C
; Wu C
Int J Clin Exp Pathol
2015[]; 8
(6
): 6245-54
PMID26261501
show ga
Hydrogen sulfide (H2S) has been reported to be interwined in multiple systems,
specifically in the cardiovascular system. However, the mechanisms underlying
remain controversial. In the present study, we assessed the cardio-protective
effects of H2S in the rat hemorrhagic shock model. Hemorrhagic shock was induced
in adult male Sprague-Dawley rats by drawing blood from the femoral artery to
maintain the mean arterial pressure at 35-40 mmHg for 1.5 h. The rats were
assigned to four groups and the H2S donor, NaHS (28 ?mol/kg, i.p.), was injected
before the resuscitation in certain groups. After resuscitation the animals were
observed and then killed to harvest the hearts. The morphological investigation
and ultrastructural analyses were done and apoptotic cells were detected. The
levels of relevant proteins were examined using Western blotting and
immunohistochemical analyses. Resuscitated hemorrhagic shock induced heart injury
and significantly increased the levels of serum myocardial enzymes, creatine
kinase (CK) and lactate dehydrogenase (LDH) levels. Furthermore, it caused marked
increase of apoptotic cells in heart tissue. Moreover, the expression of death
receptor Fas and Fas-ligand, as well as the expression of apoptosis-relevant
proteins active-caspase 3 and active-caspase 8 were markedly increased.
Administration of NaHS significantly ameliorated hemorrhagic shock caused
hemodynamic deterioration, decreased myocardial enzymes elevation, protected
myocardial ultrastructure, and inhibited the expression of apoptosis-relevant
proteins. It suggested that H2S might exert its cardio-protective roles via both
the extrinsic Fas/FasL/caspase-8/caspase-3 pathway and the intrinsic
mitochondria-involved pathways.