Dynamic changes of IL-1β in rat myocardium during hypoxia/ reoxygenation transition / 中国应用生理学杂志
Chinese Journal of Applied Physiology
; (6): 27-30, 2015.
Article
em Zh
| WPRIM
| ID: wpr-243441
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the expression profile of interleuki-1β (IL-1β) in rat myocardium at different time points during hypoxia/reoxygenation(H/R)transition.</p><p><b>METHODS</b>The isolated Langendorff perfused rat heart model was established.Forty SD rats were randomly divided into sham group (A group) and hypoxia/reoxygenation group (H/R group). The H/R group rats were subdivided into H/R 0.5 h group(B group), H/R 1 h group(C group), H/R 2 h group(D group)according to reoxygenation time. The left ventricular development pressure(LVDP), maximal rates of increase/decrease of the left ventricular pressure(±dp/dtmax) were continuously recorded. The concentration of interleukin-1β(IL-lβ) and creatine kinase-MB (CK-MB) in myocardium was measured by ELISA. The mRNA expression of IL-lβ in myocardium was determined by RT-PCR. Microstructure of myocardium was observed under light microscopy.</p><p><b>RESULTS</b>The value of LVDP and ±dp/dtmax in hypoxia/reoxygenation group rat were significantly lower than that in sham group(P < 0.05). The expression of IL-lβ and CK-MB at protein level and the expression of IL-1β at mRNA level in hypoxia /reoxygenation group were higher than that in sham group(P < 0. 05). There were significant differences of the above parameters among H/R 0.5 h, 1 h, 2 h group(P <0.05). The concentration of IL-1β and CK-MB, the mRNA expression of IL-1β were higher in H/R 2 h group than that of other groups(P < 0.05).</p><p><b>CONCLUSION</b>The high expression of IL-Iβ in myocardium after myocardial hypoxia /reoxygenation in rats might lead to. ischemia/reperfusion injury.</p>
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Base de dados:
WPRIM
Assunto principal:
Patologia
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Ratos Sprague-Dawley
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Isquemia Miocárdica
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Modelos Animais de Doenças
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Creatina Quinase Forma MB
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Interleucina-1beta
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Hipóxia
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Metabolismo
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Miocárdio
Limite:
Animals
Idioma:
Zh
Revista:
Chinese Journal of Applied Physiology
Ano de publicação:
2015
Tipo de documento:
Article