脱氢紫堇碱对高糖培养心肌成纤维细胞增殖和胶原分泌的影响

摘要

Objective To observe the effects of dehydrocorydaline (DHC) on proliferation and collagen secretion of cardiac fibroblasts (CFs) cultured by high glucose;To provide experimental evidence for clinical application of Rhizoma Corydalis. Methods CFs cultured in vitro with high glucose were made into models. Collagenase and trypsin were used for the combine digestion of CFs from ratsbornin 24 h. 2-4 generation CFs were cultured by high glucose (25 mmol/L), and then 100, 50, 25 mg/L dethydrocorydaline was added for intervention. Cellular morphology of CFs was observed after 24, 48 h. CFs proliferation was detected by MTT method. Cell cycle was assessed via flow cytometry. The levels of collagen Ⅰ and collagen Ⅲ were determined by ELISA. Results CFs began to grow adherence 3 hours after planting, and CFs cultured by high glucose significantly proliferated 24, 48 h later (P<0.05, P<0.01). The percentage of S+G2+M phase CFs increased significantly after 48 h (P<0.01). The secretion of collagen Ⅰ and collagen Ⅲ also increased significantly (P<0.01). After the intervention of DHC, CFs proliferation was significantly inhibited (P<0.01);the percentage of S+G2+M phase CFs decreased (P<0.01);the secretion of collagen Ⅰ and collagen Ⅲ was reduced (P<0.05, P<0.01). Conclusion DHC can reduce CFs proliferation, decrease collagen secretion of CFs cultured by high glucose, and has potential effects of anti-myocardial fibrosis.%目的：观察中药延胡索主要有效成分脱氢紫堇碱(DHC)对高浓度葡萄糖培养的心肌成纤维细胞(CFs)增殖和胶原分泌的影响,为延胡索的临床应用提供实验依据。方法采用体外高糖培养的CFs模型进行实验。以胶原酶与胰蛋白酶联合消化分离出生24 h内乳鼠CFs,取2～4代细胞高浓度葡萄糖(25 mmol/L)培养,分别加入100、50、25 mg/L DHC干预,24、48 h后镜下观察细胞形态,MTT法检测细胞增殖,流式细胞仪检测细胞周期,ELISA测定Ⅰ型、Ⅲ型胶原含量。结果 CFs种植3 h后开始贴壁生长,高浓度葡萄糖培养液培养24、48 h后细胞增殖明显增加(P＜0.05,P＜0.01),48 h后S＋G2＋M期细胞的百分率明显增加(P＜0.01),细胞分泌Ⅰ型、Ⅲ型胶原量明显升高(P＜0.01)；DHC干预后可显著抑制CFs增殖(P＜0.01),降低S＋G2＋M期细胞百分率(P＜0.01),减少Ⅰ型、Ⅲ型胶原分泌(P＜0.05,P＜0.01)。结论 DHC能抑制高糖培养的CFs的增殖,减少胶原分泌,DHC具有潜在的抗心肌纤维化作用。