活血方提取物对GK大鼠糖尿病视网膜病变的保护机制  被引量:3

Protective effect of Huo-Xue recipe extract on diabetic retinopathy of GK rats

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作  者:宁丹[1,2] 李玉桑[1,2] 唐和斌[1,2] 刘敏[1,3] 

机构地区:[1]中南民族大学药学院药理研究室,武汉430074 [2]深圳华中科技大学研究院,广东深圳518057 [3]重庆市药品技术审评认证中心,重庆400042

出  处:《中国临床药理学杂志》2016年第23期2178-2181,2186,共5页The Chinese Journal of Clinical Pharmacology

基  金:国家自然科学基金资助项目(81202942);湖北省自然科学基金资助项目(2015CFB496)

摘  要:目的探究活血方提取物(EBRE)对2型糖尿病GK大鼠视网膜病变保护机制。方法将28周龄GK大鼠随机分为模型组、EBRE低、中、高剂量组和阳性对照组,每组各5只,另取5只Wistar大鼠为阴性对照组。EBRE低、中、高剂量组分别灌胃予以3.90,7.80,15.60 g·kg^(-1)EBRE,阳性对照组灌胃予以150.00 mg·kg^(-1)羟苯磺酸钙,模型组和阴性对照组均灌胃予以等体积0.9%NaCl。6组大鼠每天灌胃一次,连续给药12周。给药4,8,12周后,检测6组大鼠的空腹血糖(FBG);给药12周后,用HE染色法检测视网膜厚度和视网膜神经节细胞(RGCs)计数,用免疫染色法检测大鼠视网膜β-catenin、环氧合酶-2(COX-2)和血管内皮生长因子(VEGF)表达。结果给药12周后,模型组、阴性对照组、阳性对照组、EBRE低、中、高剂量组的FBG分别为(7.66±0.68),(4.35±0.75),(5.77±0.81),(5.50±0.61),(5.98±0.70),(6.25±0.29)mmol·L^(-1);视网膜厚度分别为(38.07±7.57)%,(92.50±26.15)%,(60.11±13.56)%,(32.86±15.06)%,(78.32±11.88)%,(47.03±9.76)%;RGCs计数分别为(47.08±5.84)%,(100.00±21.91)%,(66.65±13.95)%,(59.19±5.96)%,(82.90±9.69)%,(61.69±9.10)%;β-catenin表达量分别为(295.35±56.63)%,(100.00±34.44)%,(268.65±52.65)%,(190.10±43.90)%,(227.66±53.92)%,(298.29±57.79)%;COX-2表达量分别为(186.40±78.86)%,(100.00±39.94)%,(78.29±26.99)%,(57.21±13.92)%,(55.11±14.99)%,(203.62±50.22)%;VEGF表达量分别为(381.59±146.52)%,(100.00±24.26)%,(211.48±68.18)%,(193.36±71.10)%,(195.63±44.60)%,(308.89±125.60)%,模型组与阴性对照组比较差异均有统计学意义(P<0.05)。所有数据除FBG外都以阴性对照为100.00%。结论 EBRE通过降低GK大鼠FBG,抑制视网膜β-catenin表达,减少RGCs丢失,改善视网膜病变。Objective To investigate the therapeutic effect and mecha- nism of Huo - Xue recipe extract (EBRE) on diabetic retinopathy. Methods The 28 - week - old - male GK rats were randomly divided into five groups, 5 rats per group: model group (0. 9% NaC1),low - , middle-, high- dose EBRE groups (3.90, 7.80, 15.60 g · kg^-l EBRE) and positive control group (150. 00 mg · kg^-1 calcium dobesi- late). The 5 same age Wistar rats were raised as negative control group (0. 9% NaCI). The six groups were fed once a day for 12 weeks byintragastric administration. Fasting blood glucose levels (FBG) were detected during the administration. After 12 weeks, rats were sacrificed and[ eyes were paraffin embedding. The thickness of retina was measured and the number of retinal ganglion cell layer neurons (RGCs) was counted and with Hematein Eosin, β -catenin, cyclooxygenase -2 (COX -2 ) and vascular endothelial growth factor (VEGF) were tested by immunohistochemistry technique. Results FBG in negative control group, model group, positive control group, and low -, middle -, high - dose EBRE groups were (7.66 ±0.68), (4.35 ±0.75), (5.77 ±0.81), (5.50 ±0.61), (5.98±0.70), (6. 25 ± 0. 29) mmol·L^-1 ; retinal thickness were ( 38.07 ± 7.57 ) %, ( 92. 50± 26. 15 ) %, ( 60. 11 ± 13.56 ) %, ( 32. 86 ± 15.06) %, (78.32 ± 11.88 ) %, (47.03 ± 9. 76 ) % ( % of negative control) ; the number of RGCs were (47.08±5.84)%, (100.00±21.91)%, (66.65 ± 13.95)%, (59.19±5.96)%, (82.90±9.69)%, (61.69±9.10)% (% of negative control); the expression of β -catenin were (295.35 ± 56.63)%, ( 100. 00 ± 34. 44) %, (268.65 ± 52. 65 ) %, ( 190. 10 ± 43.90 ) %, ( 227.66 ± 53.92 ) %, ( 298.29 ± 57.79 ) % (% of negative control); tile expression of COX - 2 were (186.40 ± 78.86)%, (100.00 ± 39. 94)%, (78.29 ± 26. 99 ) %, (57.21 ± 13.92) %, (55.11 ± 14. 99 ) %, (203.62 ± 50.

关 键 词:活血方提取物 糖尿病视网膜病变 视神经元 Β-CATENIN 氧化酶-2 血管内皮生长因子 

分 类 号:R28[医药卫生—中药学]

 

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