摘要
目的 探讨骨桥蛋白(OPN)和白细胞介素17(IL-17)在β淀粉样蛋白(Aβ)神经毒性及阿尔茨海默病(AD)病理机制中的作用.方法 36只成年雄性SD大鼠随机分为3组:假手术组(Sham,S),AD模型7天组(AD7d),AD模型14d组(AD14d).Morris水迷宫测试各组大鼠认知功能;酶联免疫吸附试验(ELISA)检测各组大鼠脑脊液和血清IL-17和OPN含量变化.结果 Morris水迷宫显示与S组(12.27±3.28)比较,AD7d组(33.12±7.76)和AD14d组(45.03±6.85)大鼠潜伏期均显著延长(P =0.002、P=0.000),AD 14 d组比AD7 d组潜伏期显著延长(P=0.000).与S组(37.72±6.46)比较,AD7d组(31.48±6.18)和AD14d组(28.55±9.22)大鼠目标象限停留时间百分比显著减少(P=0.005、P=0.031).与S组(9.47±1.15)比较,AD7d组(13.35±1.74)和AD14d组(15.86±2.13)大鼠脑脊液IL-17含量显著增加(P=0.000、P=0.000).与AD7d组比较,AD14d组大鼠脑脊液IL-17含量显著增加(P=0.002).与S组(8.44 ±0.92)比较,AD7d组(10.38±2.15)和AD14d组(11.64±1.60)大鼠血清IL-17含量显著增加(P =0.033、P=0.000).与S组(5.90±0.81)比较,AD7d组(18.51±7.57)和AD14d组(41.54±6.68)大鼠脑脊液OPN含量显著增加(P=0.000、P=0.000).与AD7d组比较,AD14d组脑脊液OPN含量显著增加(P=0.000).与S组(176.54±23.69)比较,AD7d组(227.15±20.56)和AD14d组(302.19±12.19)大鼠血清OPN含量显著增加(P=0.000、P=0.000).与AD7d组比较,AD14d组血清OPN含量显著增加(P=0.000).AD7 d组和AD14 d组脑脊液和血清中IL-17和OPN含量变化均呈显著正相关(P=0.000).结论 Aβ1-42脑室内注射能够引起大鼠脑脊液、外周血IL-17和OPN含量增加,且脑脊液和血清中IL-17和OPN含量在AD大鼠模型中呈明显的正相关.
Objective To investigate the role of osteopontin (OPN) and interleukin-17 (IL-17) in neurotoxic mechanisms of beta-amyloid (Aβ3) and the pathogenesis of Alzheimer' s disease (AD).Methods 36 adult male SD rats were divided into 3 groups randomly:Sham group (S),7 day AD model group (AD7d) and 14 day AD model group (AD14d).Morris Water Maze test was used to assess cognitiye function.The levels of IL-17 and OPN in cerebrospinal fluid(CSF) and serum were examined by enzyme-linked immunosorbent assay (ELISA) assay.Results In Morris Water Maze test,compared with S group (12.27 ± 3.28),the latencies in AD7d group (33.12 ±7.76) and AD14d group (45.03 ±6.85) were significantly increased (P=0.002,P =0.000).Compared with AD7d group,the latency in AD14d group was significantly prolonged (P =0.000).Compared with S group (37.72 ± 6.46),the time percentage in AD7d group (31.48 ± 6.18) and AD14d group (28.55 ± 9.22) was significantly decreased (P =0.005,P =0.031).Compared with S group (9.47 ±1.15),a remarkable(P =0.000,P =0.000) elevation of IL-17 in the CSF of AD7d group (13.35 ± 1.74) and AD14d group (15.86 ± 2.13) was observed.Compared with AD7d group,the CSF IL-17 level in AD14d group was significantly increased (P =0.002).Compared with S group (8.44 ± 0.92),a remarkable (P =0.033,P =0.000) elevation of IL-17 in the serum of AD7 d group (10.38 ± 2.15) and AD14d group (11.64 ± 1.60) was observed.Compared with S group (5.90 ± 0.81),the OPN concentrations in CSF of AD7d group (18.51 ± 7.57) and AD14d group (41.54 ± 6.68) significantly increased (P =0.000,P =0.000).Compared with AD7d group,the CSF OPN concentration in AD14d group significantly(P =0.000) increased.Compared with S group (176.54 ± 23.69),the OPN concentrations in serum of AD7d group (227.15 ± 20.56) and AD14d group (302.19 ± 12.19) siginificantly increased(P =0.000,P=0.000).Compared with AD7d group
出处
《国际免疫学杂志》
CAS
2016年第1期14-18,共5页
International Journal of Immunology
基金
黑龙江省自然科学基金,黑龙江省博士后资助经费,Natural Science Foundation of Heilongjiang Province,Postdoctoral Fund of Heilongjiang Province