目的:探讨益气升陷活血方及其拆方对心梗后心衰低血压大鼠心肌Ⅰ、Ⅲ型胶原的影响。方法:采用大鼠心脏左冠状动脉结扎术,建立心衰模型,将LVEF值≤50%、尾动脉收缩压≤90 mm Hg的大鼠随机分为4组,即心衰低血压组、益气升陷活血方组、益...目的:探讨益气升陷活血方及其拆方对心梗后心衰低血压大鼠心肌Ⅰ、Ⅲ型胶原的影响。方法:采用大鼠心脏左冠状动脉结扎术,建立心衰模型,将LVEF值≤50%、尾动脉收缩压≤90 mm Hg的大鼠随机分为4组,即心衰低血压组、益气升陷活血方组、益气升陷组、活血化瘀组,灌胃干预8周。用免疫组化及RT-PCR检测心肌Ⅰ、Ⅲ型胶原,并实时定量PCR检测心肌Ⅰ、Ⅲ型胶原m RNA的含量。结果:与心衰低血压组比较,所有治疗组心肌Ⅰ、Ⅲ型胶原含量及m RNA的含量均降低(P<0.05);与活血化瘀治疗组比较,益气升陷组、全方治疗组,心肌Ⅰ、Ⅲ型胶原m RNA的含量均降低,全方治疗组更显著(P<0.05)。结论:全方治疗组、益气升陷组、活血化瘀组能减轻心梗后心衰大鼠心肌纤维化的程度,减少心肌Ⅰ、Ⅲ型胶原的含量,其中全方治疗组较益气升陷治疗组、活血化瘀治疗组的改善作用明显,益气升陷组次之。展开更多
OBJECTIVE： To investigate the effects of Huogu I formula on regulation of lipid metabolism in ste- roid-induced osteonecrosis of the femoral head （SONFH） rats and verify our hypothesis that Huogu I formula regulat...OBJECTIVE： To investigate the effects of Huogu I formula on regulation of lipid metabolism in ste- roid-induced osteonecrosis of the femoral head （SONFH） rats and verify our hypothesis that Huogu I formula regulates lipid metabolism by down-regulating peroxisome proliferator-activated receptor gamma （PPARy） expression and activating Wnt signaling pathways. METHODS： Eighty-five rats were divided into four groups： control, model, Huogu 15 g/kg and Huogu 30 g/kg. Six weeks later, animals were anaesthe- tized, femora were dissected for histopathologicalexamination of the osteonecrotic changes and re- pair processes, micro computed tomography （Mi- cro-CT）-based micro-angiography was performed to assess vascularization. Serum lipid levels were detected by haematological examination. The ex- pressions of PPARy, Wnt3a, low density lipoprotein receptor-related protein 5 （LRP5） and 13-catenin were evaluated by immunohistochemistry, Western blot and quantitative real-time polymerase chain reaction analyses. RESULTS： The incidence of osteonecrosis, ratio of empty lacuna, adipose tissue area and adipocyte perimeter in the bone marrow were dramatically lower in the Huogu ~ formula treatment groups. By micro-CT quantification, Huogu ~ formula treat- ment dose-dependently increased vessel volume, vessel surface, percentage of vessel volume and vessel thickness of the femoral heads of SONFH rats. Levels of serum lipid in Huogu 15 g/kg and Huogu 30 g/kg groups reduced significantly. HuoguⅠformula treatment could suppress the ex- pression of PPARy and increase the expressions of Wnt3a, LRP5 and 13-catenin at both protein and mRNA levels. CONCLUSION： The results of our present study highlight the lipid-lowering potential of Huogu Ⅰ formula, and provide further evidence of the in- volvement of the PPARy inhibition and Wnt/LRPS/ 13-catenin signaling activation in the effects of Huogu Ⅰ formula.展开更多
基金Supported by the National Natural Science Foundation ofChina(No.81173417No.30901982No.81373656)
文摘OBJECTIVE： To investigate the effects of Huogu I formula on regulation of lipid metabolism in ste- roid-induced osteonecrosis of the femoral head （SONFH） rats and verify our hypothesis that Huogu I formula regulates lipid metabolism by down-regulating peroxisome proliferator-activated receptor gamma （PPARy） expression and activating Wnt signaling pathways. METHODS： Eighty-five rats were divided into four groups： control, model, Huogu 15 g/kg and Huogu 30 g/kg. Six weeks later, animals were anaesthe- tized, femora were dissected for histopathologicalexamination of the osteonecrotic changes and re- pair processes, micro computed tomography （Mi- cro-CT）-based micro-angiography was performed to assess vascularization. Serum lipid levels were detected by haematological examination. The ex- pressions of PPARy, Wnt3a, low density lipoprotein receptor-related protein 5 （LRP5） and 13-catenin were evaluated by immunohistochemistry, Western blot and quantitative real-time polymerase chain reaction analyses. RESULTS： The incidence of osteonecrosis, ratio of empty lacuna, adipose tissue area and adipocyte perimeter in the bone marrow were dramatically lower in the Huogu ~ formula treatment groups. By micro-CT quantification, Huogu ~ formula treat- ment dose-dependently increased vessel volume, vessel surface, percentage of vessel volume and vessel thickness of the femoral heads of SONFH rats. Levels of serum lipid in Huogu 15 g/kg and Huogu 30 g/kg groups reduced significantly. HuoguⅠformula treatment could suppress the ex- pression of PPARy and increase the expressions of Wnt3a, LRP5 and 13-catenin at both protein and mRNA levels. CONCLUSION： The results of our present study highlight the lipid-lowering potential of Huogu Ⅰ formula, and provide further evidence of the in- volvement of the PPARy inhibition and Wnt/LRPS/ 13-catenin signaling activation in the effects of Huogu Ⅰ formula.
