人外周血淋巴细胞C-有丝分裂效应的研究

目的 研究秋水仙素（Ｃｅ）和秋水仙碱（Ｃｄ）对人外周血淋巴细胞有丝分裂效应的影响。方法 应用外周血淋巴细胞培养法,分析有丝分裂指数（ＭＩ）和Ｃ－有丝分裂效应。结果 Ｃｅ和Ｃｄ的ＭＩ与相应对照组相比,差异有显著性（Ｐ〈０．０１）,Ｃ－有丝分裂效应Ｃｅ和Ｃｄ处理组与相应对照组之间差异亦有显著性（Ｐ〈０．０１）。ＭＩ和Ｃ－有丝分裂效应,Ｃｄ的作用均较Ｃｅ强。并对Ｃ－有丝分裂效应与非整倍体诱导活性之间的关     

Chronic epileptogenesis induced by kindling of the entorhinal cortex: the role of the dentate gyrus

The role of the dentate gyrus (DG) in the development and maintenance of kindling induced by periodic electrical stimulation of the entorhinal cortex (EC) was evaluated in rats. Colchicine, a selective neurotoxin for granule cells of the DG, was injected into the DG: prior to kindling and after the development of kindling. Prior destruction of the DG delayed the development of afterdischarge (AD) induced by EC stimulation, but kindling proceeded at normal rates after the first AD was induced. Destruction of the DG after kindling did not abolish the kindled seizures. Thus, the DG was not required for either the development or maintenance of kindling by EC stimulation, but an intact perforant path input from the EC to DG facilitated the emergence of epileptogenesis by kindling of the EC. The results suggest that kindling develops and is maintained in a network of multiple pathways which are related to the site of stimulation. The DG appears to be the site of a temporally specific alteration which facilitates the development of kindling by EC stimulation.     

秋水仙碱对免疫性肝纤维化的防治作用

目的：观察秋水仙碱对猪血清免疫性肝纤维化大鼠的影响。方法：腹腔注射猪血清复制大鼠免疫性肝纤维化模型，ig秋水仙碱12周，监测尿羟脯氨酸，实验结束后测血清生化指标、肝经脯氨酸和丙二醛，做肝病理组织学检查。结果：秋水仙碱能改善肝细胞病变，减少肝细胞坏死，汇管区胆管周围纤维结缔组织增生减少，肝纤维化程度减轻；肝胶原蛋白和丙二醛含量显著降低（P＜0．01），尿羟脯氨酸排出量显著增加（P＜0．01）；谷丙转氨酶和碱性磷酸酶的活力显著降低（P＜0．05，0．01），肝脏指数显著减小（P＜0．05）；总蛋白、白蛋白和白球比值明显升高（P＜0．05，0．01）。结论：秋水仙碱具有抑制脂质过氧化，促进胶原降解，抗免疫性肝纤维化的作用。     

双甲五灵冲剂抑制免疫性肝纤维化大鼠肝组织中Ⅰ、Ⅲ型胶原蛋白及基因表达的实验研究

目的探讨中药双甲五灵冲剂对免疫诱导型肝纤维化大鼠肝组织中Ⅰ、Ⅲ型胶原蛋白及基因表达的影响.方法80只雌性Wistar大鼠尾静脉注射人血白蛋白,建立免疫损伤性肝纤维化大鼠模型后分为6组:B预防组造模同时开始喂食双甲五灵冲剂;C治疗1组:在造模结束的同时开始喂食双甲五灵冲剂;D治疗2组:在造模结束3mo后开始喂食双甲五灵冲剂;E秋水仙碱组:在造模结束的同时开始喂食秋水仙碱;F鳖甲软肝片组:在造模结束的同时开始喂食鳖甲软肝片;G模型组:以观察肝纤维化自然恢复情况;另设A组为正常对照组.采用HE染色及Von-Gieson胶原纤维特殊染色以观察观察肝组织结构改变及肝纤维化程度,并采用肝组织原位杂交技术及免疫组织化学染色观察大鼠肝脏组织中Ⅰ、Ⅲ型胶原蛋白及基因的表达强度.结果免疫诱导型肝纤维化大鼠,在造模结束后肝组织学改变呈进行性加重,以造模结束后3 mo为著,其Ⅰ、Ⅲ型胶原蛋白及基因呈强阳性表达,而经双甲五灵冲剂治疗后的大鼠与模型组大鼠相比,肝组织结构明显好转,纤维组织明显减少,Ⅰ、Ⅲ型胶原蛋白及基因表达明显降低(P＜0.05),并且其效果为预防组效果最好,治疗1组较治疗2组效果好,三组均明显优于秋水仙碱组.结论中药双甲五灵冲剂可以逆转肝纤维化,其抑制Ⅰ、Ⅲ型胶原蛋白及基因的表达是逆转肝纤维化的机制之一.