成骨生长肽羧基端片段及其衍生物对骨髓抑制小鼠造血系统的影响

目的:初步观察成骨生长肽羧基端片段[OGP(10-14)]及其衍生物G38I、G38K对环磷酰胺(CTX)诱导骨髓抑制小鼠造血系统的影响.方法:40只小鼠随机分为5组,经注射CTX诱导骨髓抑制.分别给予OGP(10-14)、G38I、G38K或粒细胞集落刺激因子(G-CSF)治疗,未治疗的CTX组为阴性对照.分别于第1、7、10、14天测定小鼠外周血象并于注射CTX后第7天处死.观察外周血干细胞抗原-1(Sca-1)阳性细胞比例和骨髓有核细胞数.结果:注射CTX可诱导小鼠出现骨髓抑制.注射CTX前OGP(10-14)及其衍生物对小鼠外周血象无明显作用(P>0.05).注射CTX后OGP(10-14)组和G38I组外周血白细胞较CTX组显著升高(P<0.01),疗效与G-CSF接近,G38I组和G38K组血小板升高(P<0.01).各药物治疗组外周血Sca-1阳性细胞百分比和骨髓有核细胞数显著提高(P<0.05,P<0.01).结论:OGP(10-14)及其衍生物G38I、G38K可升高骨髓抑制小鼠外周血白细胞和血小板的数量,动员造血干细胞,对骨髓造血功能的恢复起到积极作用.

Effects of osteogenic growth peptide c-terminal pentapeptide and its derivatives on hematopoiesis in mice with bone marrow depression

Objective To investigate the effects of osteogenic growth peptide c-terminal pentapeptide[OGP(10-14)] and its derivatives G38I,G38K on hematopoiesis in mice with cyclophosphamide (CTX)-induced bone marrow depression.Methods Forty mice were randomly divided into 5 groups.The bone marrow depression models were induced by injection of CTX.The mice were treated by OGP(10-14),G38I and G38K or granulocytecolony-stimulating factor (G-CSF) respectively,while the untreated CTX group was negative control.The peripher...