目的:探讨豨莶草(HS)醇提物对多柔比星(DOX)致小鼠慢性心肌损伤的影响。方法:将48只小鼠随机分为3组,即空白对照(Con)组小鼠每天ig 1次蒸馏水(2 mL/100 g),并每周ip 1次生理盐水,持续8周;DOX组小鼠每天ig 1次蒸馏水(2 mL/100g),并每周ip 1次DOX(3 mg/kg),持续8周;DOX+HS醇提物组小鼠每天ig 1次HS(340 mg/kg),并每周ip 1次DOX(3 mg/kg),持续8周。给药结束后,测定小鼠体质量、心脏系数、心功能变化以及血清生化指标[丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)、肌酸磷酸激酶(CK)、肌酸激酶同工酶(CK-MB)、乳酸脱氢酶(LDH)及总胆固醇(TC)]水平。结果:与Con组比较,DOX组小鼠体质量减轻(P〈0.01);心脏系数升高(P〈0.05);心率减慢、R波增高(P〈0.05或P〈0.01);血清中生化指标均有所升高,其中AST差异有统计学意义(P〈0.01)。与DOX组比较,DOX+HS醇提物组小鼠心脏系数降低(P〈0.01);心率增加(P〈0.01);血清中生化指标均有所降低,其中CK、LDH、TC差异有统计学意义(P〈0.01)。结论:HS醇提物对DOX致小鼠慢性心肌损伤有一定的保护作用。
OBJECTIVE:To explore the effects of extracts from Siegesbeckiae herba(HS) on doxorubicin(DOX)-induced chronic myocardial injury in mice. METHODS:48 mice were randomly divided into 3 groups. Mice in blank control(Con)group received distilled water once every day,ig,and normal saline(2 mL/100 g)once every day,ip,for 8 weeks;mice in DOX mice received distilled water(2 mL/100 g)once every day,ig,and DOX(3 mg/kg)once every week,ip,for 8 weeks;mice in DOX+HS group received HS(340 mg/kg)once every day,ig,and DOX(3 mg/kg)once every week,ip,for 8 weeks. After administration,body mass,heart coefficient,cardiac function changes,serum biochemical index levels [alanine aminotransferase(ALT),aspartate aminotransferase(AST),creatine phosphokinase(CK),creatine kinase isoenzyme(CK-MB),lactate dehydrogenase(LDH)and total cholesterol(TC)] of mice were determined. RESULTS:Compared with Con group,body mass of mice in DOX group was decreased(P〈0.01);heart coefficient was increased(P〈0.05);heart rate slowed down,R-wave was increased(P〈0.05 or P〈0.01);serum biochemical indexed were increased,there was significant difference in AST(P〈0.01). Compared with DOX group,heart coefficient of mice in DOX + HS group was decreased(P〈0.01);heart rate was increased(P〈0.01);serum biochemical indexes were decreased,there was significant differences in CK,LDH,TC(P〈0.01). CONCLUSIONS:HS has certain protective effects on DOX-induced chronic myocardial injury in mice.