摘要:
目的:本研究对浑源仿野生栽培蒙古黄芪、武川栽培蒙古黄芪、土默特右旗栽培蒙古黄芪及野生蒙古黄芪的抗疲劳作用进行比较研究.方法:采用18 ~ 22 g KM小鼠,随机分组后连续灌胃给予黄芪提取液(低剂量为5 g·kg-1,高剂量为10 g·kg-1)4周,进行负重力竭游泳实验,记录小鼠力竭游泳时间;同时测定给药4周后小鼠运动90 min后全血乳酸(LA)含量、血浆乳酸脱氢酶(LDH)活性,血浆尿素氮(BUN)含量,肝糖原(LG)含量.结果:与空白对照组比较四种不同产地的蒙古黄芪均可显著延长小鼠力竭游泳时间(P<0.05),各低剂量组力竭游泳时间分别为:浑源组522.0±81.5 s、武川组613.4±55.7 s、土右野生组508.2±61.0 s、土右栽培组484.5±40.7 s,高剂量组力竭游泳时间分别为:浑源组599.7±48.6 s、武川组790.3±57.1 s、土右野生组575.7±73.7 s、土右栽培组544.1±74.9 s,相同剂量进行比较发现武川组游泳时间较其他组显著延长(P<0.05),其余各组间无统计学差异;四组黄芪均可增加小鼠运动后肝糖原含量,各低剂量组肝糖原含量分别为:浑源组26.81±1.04 mg·g-1、武川组31.67±2.87 mg·g-1、土右野生组22.31 ±2.38 mg·g-1、土右栽培组22.96±1.95 mg·g-1,各高剂量组肝糖原含量分别为:浑源组30.89±3.35 mg·g-1、武川组39.56±3.44 mg·g-1、土右野生组29.52±1.43 mg·g-1、土右栽培组28.41±2.06 mg·g-1;同时四个产地黄芪均可显著降低运动后小鼠血液乳酸、尿素氮含量,增加乳酸脱氢酶活性(P<0.05).结论:四种产地蒙古黄芪均具有显著的抗疲劳作用,其中以内蒙古武川产黄芪药效最好,浑源和土右黄芪作用次之.%Objective:The anti-fatigue effects of Astragalus membranaceus (Fisch.) Beg.var.mongholicus from different habitats were studied in this research.The samples of wild and cultivated A.membranaceus var.mongholicus were collected from Shanxi Hunyuan,Inner Mongolia Wuchuan and Inner Mongolia Tumoteyouqi.Methods:Exhaustive swimming exercise:18 ~22 g KM mice were used and administered orally by dose of 5 g ·kg-1 and 10 g ·kg-1 for4 weeks.One hour after the last administration,put mice into water (16 cm× 16 cm ×20 cm,(25 ± 1) °C) with 10% bodyweight iron wire on the tail,recording the swimming time until the mice sank for 10 s.90 min swimming exercise:Mice were treated as described above.One hour after the last administration,put mice into water (16 cm × 16 cm ×20 cm,(25 ± 1) °C2) and let them swim for 90 min,then lactic dehydrogenase,blood urea nitrogen,lactic acid,and hepatic glycogen were tested.Results:The results indicated that A.membranaceus var.mongholicus from all these habitats could significantly extend mice exhaustive swimming time,increase the liver glycogen and blood lactate dehydrogenase after swimming,decrease the blood lactic and blood urea nitrogen level after swimming.The swimming timne of each low dose group was:Hunyuan (522.0 ± 81.5) s,Wuchuan (613.4 ±55.7) s,Tumoteyouqi wild (508.2 ±61.0) s,Tumoteyouqi cultivated (484.5 ±40.7) s;the swimming time of each high dose group is:Hunyuan (599.7 ± 48.6) s,Wuchuan (790.3 ± 57.1) s,Tumoteyouqi wild (575.7 ± 73.7) s,Tumoteyouqi cultivated (544.1 ± 74.9) s,and Wuchuan group is significantly longer than the other three groups.The liver glycogen of each low dose group was:Hunyuan (26.81 ± 1.04) mg ·g-1,Wuchuan (31.67 ±2.87) mg ·g-1 、Tumoteyouqi Wild (22.31 ± 2.38) mg ·g-1,Tumoteyouqi Cultivated (22.96 ± 1.95) mg ·g-1,the liver glycogen of each high dose group was:Hunyuan (30.89 ± 3.35) mg· g-1,Wuchuan (39.56 ± 3.44) mg · g-1,Tumoteyouqi wild (29.52 ± 1.43) mg · g-1 Tumoteyouqi cultivated (28.41 ± 2.06) mg ·g-1.Conclusion:The swimming time of all the four groups was prolonged remarkably,and Wuchuan A.membranaceus var.mongholicus showed best anti-fatigue effects.There was no significant difference between cultivated and wild A.membranaceus var.mongholicus from Tumoteyouqi.