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1.
Chinese Journal of Hepatology ; (12): 425-427, 2005.
Artigo em Chinês | WPRIM | ID: wpr-348784

RESUMO

<p><b>OBJECTIVES</b>To investigate the effect of interlukin-10 (IL-10) on expression and secretion of collagen I, IV in rat's hepatic stellate cells (HSC) of livers injured by CCl4.</p><p><b>METHOD</b>The adenovirus vector encoded IL-10 gene was used to transfect rats with liver injury via the caudal veins. HSC were isolated and purified from the rat livers by collagenase IV perfusion and density gradient centrifugation with Nycodenz. The expression of collagen I, IV mRNA in HSC was detected by semi-quantitative RT-PCR method and the secretion of collagen I, IV in culture serum of HSC by ELISA method. The quantity of collagen was measured in the van Gieson stained histological liver preparations.</p><p><b>RESULTS</b>The expression and secretion of collagen I, IV in the adenovirus vector encoding IL-10 gene group were significantly lower than those in the adenovirus vector without IL-10 gene group and the control group (P < 0.05). The quantity of collagen in the treatment group was lower than that in the control group.</p><p><b>CONCLUSION</b>IL-10 can inhibit collagen I, IV expression and secretion in rat HSC.</p>


Assuntos
Animais , Masculino , Ratos , Células Cultivadas , Colágeno Tipo I , Genética , Colágeno Tipo IV , Genética , Hepatócitos , Metabolismo , Patologia , Interleucina-10 , Farmacologia , Cirrose Hepática Experimental , Metabolismo , Patologia , Ratos Sprague-Dawley
2.
Chinese Journal of Hepatology ; (12): 35-37, 2005.
Artigo em Chinês | WPRIM | ID: wpr-233628

RESUMO

<p><b>OBJECTIVE</b>To investigate the regulatory effect of interleukin-10 (IL10) on the activation of hepatic stellate cells (HSC) through platelet derived growth factor (PDGF) and mitogen-activated protein kinase (MAPK) pathways.</p><p><b>METHODS</b>HSC were divided randomly into 4 groups. Group 1 served as a control. HSC were incubated with 1 ng/ml, 5 ng/ml, and 25 ng/ml IL-10 in groups 2, 3 and 4. RT-PCR and western blot were used to detect the expression of PDGF and MAPK protein ERK and p38 and alpha-SMA.</p><p><b>RESULTS</b>Compared with the control group, expressions of ERK, p38 and alpha-SMA of groups 2, 3 and 4 were significantly lower (F values were 240.47, 21.39, 28.86 respectively. IL-10 inhibited PDGF and MAPK protein ERK and p38 and alpha-SMA expression in a dose-dependent way.</p><p><b>CONCLUSION</b>IL-10 inhibits activation of HSC through the PDGF/MAPK pathway.</p>


Assuntos
Animais , Ratos , Linhagem Celular , Proliferação de Células , Hepatócitos , Biologia Celular , Interleucina-10 , Farmacologia , Proteínas Quinases Ativadas por Mitógeno , Fator de Crescimento Derivado de Plaquetas , Transdução de Sinais
3.
Chinese Journal of Surgery ; (12): 282-286, 2005.
Artigo em Chinês | WPRIM | ID: wpr-264524

RESUMO

<p><b>OBJECTIVE</b>To investigate the effect of interleukin-10 (IL-10) on the expression of transforming growth factor-beta(1) (TGFbeta(1)) and platelet-derived growth factor (PDGF) in hepatic stellate cells (HSC) during liver injury.</p><p><b>METHODS</b>The adenovirus vector (the titer was 1 x 10(7) efu/ml) encoded IL-10 gene was used to transfect the rat via the vein of caudal. At the same time, CCl(4) was injected into rat by a hypodermic injection. These processes went on twice a week. After eight weeks, the liver were perfused with collagenase IV and purified by density gradient centrifugation with Nycodenz for separate HSC. The level of IL-10 was measured by ELISA method; The expression of PDGF and TGFbeta(1) in HSC was detected by semi-quantitative RT-PCR and Western-blot methods.</p><p><b>RESULTS</b>The level of IL-10 in therapy group (adenovirus vector encoding IL-10 gene group) was higher than that in non-therapy group (adenovirus vector without IL-10 gene and PBS group); The expression of TGFbeta(1) mRNA, TGFbeta(1) protein and PDGF mRNA, PDGF protein in therapy group were significantly lower than that in non-therapy group (P < 0.05).</p><p><b>CONCLUSION</b>Downregulating the TGFbeta(1) and PDGF expression could be the passageway by which IL-10 alleviate the degree of proliferation and activation in hepatic stellate cells.</p>


Assuntos
Animais , Masculino , Ratos , Regulação para Baixo , Terapia Genética , Hepatócitos , Fisiologia , Interleucina-10 , Farmacologia , Cirrose Hepática Experimental , Metabolismo , Patologia , Terapêutica , Fator de Crescimento Derivado de Plaquetas , RNA Mensageiro , Ratos Sprague-Dawley , Células Estromais , Fisiologia , Transfecção , Fator de Crescimento Transformador beta , Fator de Crescimento Transformador beta1
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