机构地区:[1]贵州医科大学环境污染与疾病监控教育部重点实验室、卫生毒理学教研室,贵阳550025
出 处:《中华地方病学杂志》2017年第1期11-15,共5页Chinese Journal of Endemiology
基 金:国家自然科学基金(81430077、81172603);黔教合协同创新中心[(2014)06]
摘 要:目的检测并分析砷暴露大鼠外周血调节性T细胞(regulatory T cell,Treg)、辅助性T细胞-17(Thelper 17,Th17)相关免疫因子的表达差异及意义。方法选取健康初断乳Wistar大鼠32只,按大鼠体重,由小到大依次进行编号,采用随机数字表法分为对照组、低砷剂量组(1.25ml/kg)、中砷剂量组(2.50ml/kg)、高砷剂量组(5.00ml/kg)4组,每组8只;对照组给予去离子水,其余各砷剂量组按体重用2.00g/L的亚砷酸钠(NaAsO2)水溶液进行灌胃,每周6d,连续染砷4个月。实验终期采集各组大鼠尿液和外周血,采用电感耦合等离子体质谱仪(inductively coupled plasma-mass spectrometry,ICP-MS)检测尿砷含量,结果以[中位数(最小值~最大值)]表示,尿砷经尿肌酐(urinary creatinine,uCr)校正,单位为μ g/gCr;采用酶联免疫吸附法(enzymelinked immunosorbent assay,ELISA)检测血清中Treg细胞相关因子白细胞介素10(interleukin-10,IL-10)、转化生长因子β1(transforming growth factor betal,TGF-β1),Th17细胞相关因子IL-17、IL-6及T淋巴细胞活化相关因子IL-2的表达水平,结果以x±s表示。结果对照组,低、中、高砷剂量组尿砷含量[7.50(3.16-9.81)、72.34(62.34-106.63)、209.15(154.41-232.20)、369.73(289.50-516.55)μg/g Cr]比较,差异有统计学意义(F=337.55,P〈0.05)。对照组,低、中、高砷剂量组IL-10[(85.03±7.11)、(93.96±8.14)、(97.48±6.23)、(93.47±4.41)ng/L]、TGF-β1[(72.88±2.96)、(81.45±8.15)、(86.08±7.55)、(90.29±5.35)ng/L]、IL-17[(18.15±3.66)、(25.54±5.59)、(31.48±5.74)、(37.25±7.36)ng/L]、IL-6[(83.68±8.48)、(85.14±7.11)、(89.78±5.36)、(93.48±5.77)ng/L]、IL-2[(80.65±6.90)、(73.86±8.00)、(69�Objective To investigate the differential expression levels and significance of regulatory T cell (Treg) and T helper 17 (Th17) related immunologic factors in peripheral blood of arsenic-exposed rats. Methods Thirty-two Wistar rats were numbered by weight, randomly divided into four groups [control, low (1.25 ml/kg), medium (2.50 ml/kg), and high (5.00 ml/kg)], 8 rats per group. Rats in control group were given oral gavage of deionized water, and low, medium and high arsenic exposed groups were given oral garage doses of 2.00 g/L sodium arsenite (NaAsO2) according to their body weight for 6 days every week. After 4 months, the urine and peripheral blood samples of rats were collected, urinary arsenic (uAs) was detected by inductively coupled plasma-mass spectrometry (ICP-MS), the results were shown in [median (minimum and maximum)], uAs was corrected by urinary creatinine (uCr), the unit was μg/g Cr; enzyme-linked immune-sorbent assay (ELISA) was applied to detect the levels of Treg, ThlT, T lymphocytes activation related immunologic factors [interleukin-10 (IL- 10), transforming growth factor betal (TGF-β1), IL-17, IL-6, IL-2], the results were shown in x±s. Results The uAs of the rats was compared between control, low, medium, and high arsenic exposed groups [7.50 (3.16 - 9.81), 72.34 (62.34 - 106.63), 209.15 (154.41 - 232.20), 369.73 (289.50 - 516.55) μg/g Cr], the differences were statistically significant (F = 337.55, P 〈 0.05). IL-10 [(85.03 ± 7.11), (93.96 ± 8.14), (97.48 ± 6.23), (93.47 ± 4.41) ng/L], TGF-β1 [(72.88 ± 2.96), (81.45 ± 8.15), (86.08 ± 7.55), (90.29 ± 5.35) ng/L], IL-17 [(18.15 ± 3.66), (25.54 ± 5.59), (31.48 ± 5.74), (37.25 ± 7.36) ng/L], IL-6 [(83.68 ± 8.48), (85.14 ± 7.11), (89.78 ± 5.36), (93.48 ± 5.77) ng/L], and IL-2 [(80.65 ± 6.90), (73.86 ± 8.00), (69.93 ± 7.77), (62.06 ± 9.82) ng/L] of the rats were compare
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