过量氟摄入对大鼠骨组织氧化应激的影响  被引量:2

Impact of excessive fluoride intake on bone tissue oxidative stress

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作  者:吴延莉 徐小东[2] 曾贝贝[2] 向蓉[1] 曹发军[2] 范祥[2] 韦艳[2] 

机构地区:[1]贵州省疾病预防控制中心慢性病防治研究所慢性病综合防治科,贵阳550004 [2]贵州医科大学公共卫生学院环境卫生学教研室

出  处:《中华地方病学杂志》2015年第10期729-732,共4页Chinese Journal of Endemiology

基  金:国家自然科学基金(81360412);贵州省科技厅社会发展攻关计划项目(黔科合SY字[2013]3062号);科技部国家科技支撑计划课题(2013BA105803)

摘  要:目的观察过量氟摄入对大鼠骨组织氧化应激的影响。方法将40只断乳2周的Wistar大鼠按体质量采用随机数字表法分为4组,分别为对照组(自来水)和低过剂量氟组[含50mg/L氟化钠(NaF)自来水1、中过剂量氟组(含150mg/LNaF自来水)、高过剂量氟组(含250mg/LNaF自来水),每组10只,雌雄各半,采用自由饮用的方式进行染毒,连续染毒6个月。染毒结束后,收集大鼠的12h尿液,处死大鼠采集血液,分离右后胫腓骨。检测大鼠尿氟、血清氟及骨氟含量及氟斑牙发生率,并检测大鼠骨组织中抑制羟自由基能力,过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH—Px)、超氧化物歧化酶(SOD)的活力及8.羟基脱氧鸟苷(8.OHdG)、蛋白质羰基(PCO)、丙二醛(MDA)的含量。结果①抑制羟自由基能力测定结果:对照组,低、中、高过剂量氟组的抑制羟自由基能力分别为(22.99±4.31)、(22.76±8.11)、(13.47±4.56)、(19.40±5.92)U/mgprot,各组比较差异有统计学意义(F=5.01,P〈0.05)。@)SOD测定结果:对照组,低、中、高过剂量氟组的SOD分别为(5.06±1.16)、(5.32±1.18)、(3.71±0.72)、(4.80±1.10)U/mgprot,各组比较差异有统计学意义(F=4.44,P〈0.05)。③CAT测定结果:对照组,低、中、高过剂量氟组的CAT分别为(25.20±5.91)、(22.53±7.10)、(17.96±4.71)、(19.52±5.52)U/gprot,各组比较差异有统计学意义(F=2.85,P〈0.05)。@GSH-Px测定结果:对照组,低、中、高过剂量氟组的GSH.P][分别为(52.86±12.88)、(70.05±15.72)、(51.55±6.97)、(57.47±10.99)U/mgprot,各组比较差异有统计学意义(F:4.89,P〈0.05)。(1)PCO测定结果:对照组,低、中、高过剂量氟组的PCO分别为(58.73±20.86)、(89.Objective To comprehensively study the oxidative stress of bone tissue in rats with chronic fluorosis treated with anti-oxidant, the oxidative damage of lipid, protein and DNA. Methods Forty Wistar rats weaned 2 weeks were randomized by weight and divided into 4 groups according to body weight, control group (treated with tap water) and 3 NaF (sodium fluoride) exposure groups (treated with NaF at 50, 150 and 250 mgL), 5 female rats and 5 male rats in each group. NaF was given through drinking water. After 6 months of treatment, a 12- hour urine samples were collected, then rats were killed, serum was collected, right rear tibiofibula was separated. Bone and urinary fluoride content and incidence rate of dental fluorine were studied and the levels of bone tissue suppression function of hydroxy free radical, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), 8-hydroxydeoxyguanosine (8-OHdG), protein earbonyls (PCO), and malonaldehyde (MDA) were assayed.Results Results of suppression function of hydroxy free radical: The difference of bone tissue suppression function of hydroxy free radical among control [(22.99 ± 4.31)U/mg prot], low-excess dose [(22.76 ± 8.11)U/mg prot], medium-excess dose [(13.47 ± 4.56)U/mg prot] and high-excess dose [(19.40 ± 5.92)U/mg prot] groups was statistically significant (F= 5.01, P 〈 0.05). @Results of SOD: The difference of bone tissue SOD among control [(5.06 ± 1.16)U/mg prot], low-excess dose [(5.32 ± 1.18)U/mg prot], medium-excess dose [(3.71 ± 0.72)U/mg prot] and high-excess dose [(4.80 ± 1.10)U/rag prot] groups was statistically significant (F = 4.44, P 〈 0.05). (2) Results of CAT: The difference of bone tissue CAT among control [(25.20 ± 5.91)U/rag prot], low-excess dose [(22.53± 7.10) U/mg prot], medium-excess dose [(17.96 ±4.71)U/mg prot] and high-excess dose [(19.52 ± 5.52)U/ mg prot] groups was statistically significant (F = 2.85, P

关 键 词:氟中毒  大鼠 骨和骨组织 氧化性应激 

分 类 号:R599.1[医药卫生—内科学]

 

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