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1、氟對小鼠切牙牙胚釉原蛋白表達的影響及鎂硒拮抗作用王峰1,侯鐵舟2,唐成芳1,李潔潔2(1.西安醫(yī)學(xué)院口腔醫(yī)學(xué)系,西安,710021;2.西安交通大學(xué)口腔醫(yī)院,西安,710004)【摘要】目的:通過動物實驗研究鎂硒制劑對小鼠氟牙癥的影響及其機理,為氟牙癥的防治提供基礎(chǔ)數(shù)據(jù)。方法:80只雄性SPF級ICR小鼠,隨機分為對照組、單鎂組、單硒組、鎂硒組、加氟組、鎂氟組、硒氟組、鎂硒氟組8組。前四組飲用雙蒸水,后四組飲用F-濃度為50mg/L的雙蒸水。對照組和加氟組常規(guī)飼料喂養(yǎng),單鎂組和鎂氟組用添加MgSO4?7H2O162
2、.5mg/kg的常規(guī)飼料喂養(yǎng),單硒組和硒氟組用添加Na2SeO3?5H2O2mg/kg的常規(guī)飼料喂養(yǎng),鎂硒組和鎂硒氟組用添加MgSO4?7H2O162.5mg/kg+Na2SeO3?5H2O2mg/kg的常規(guī)飼料喂養(yǎng)。42天后處死,獲取切牙標本。免疫組化染色觀察釉原蛋白。結(jié)果:加氟組釉基質(zhì)中釉原蛋白的表達明顯高于其余各組(P<0.01);加氟組成釉細胞內(nèi)釉原蛋白的表達明顯弱于對照組、單鎂組、鎂氟組、單硒組(P<0.01),硒氟組成釉細胞內(nèi)釉原蛋白的表達明顯弱于單鎂組、鎂氟組、單硒組(P<0.01)。結(jié)論:鎂硒聯(lián)合運
3、用對氟中毒時釉原蛋白陽性表達影響較為明顯?!娟P(guān)鍵詞】氟;釉原蛋白;鎂;硒;成釉細胞;釉基質(zhì);拮抗作用EffectsoffluorideontheexpressionsofAmelogeninindentalgermofmiceincisorandtheantagonisticeffectofmagnesium-seleniumagainstfluorosisWANGFeng1,HOUTiezhou2,TANGChengfang1,LIJiejie2(1.DepartmentofStomatology,Xi’anMe
4、dicalUniversity,Xi’an710021,China;2.DepartmentofConservativeDentistryandEndodontics,StomatologicalHospitalo,MedicalCollegeofXi’anJiaotongUniversity,Xi’an710004,China)【Abstract】Objective:TostudytheantagonisticeffectsofMg-Sepreparationondentalfluorosisofmiceandi
5、tsmechanismbyanimalexperimental,providethefoundationaldatafordentalfluorosispreventionandcontrol.Methods:80maleSPFICRmice,randomlydividedinto8groups:controlledgroup,magnesiumgroup,seleniumgroup,magnesium-seleniumgroup,fluoride-group,magnesium-fluorinegroup,sel
6、enium-fluorinegroupandmagnesium-selenium-fluorinegroup.Thefirstfourgroupsdrankdoublesteamedwater,theotherfourgroupsdrank50mg/LF-doublesteamedwater.Thecontrolledgroupandfluoridegroupfedconventionally.Magnesiumgroupandmagnesium-fluorinegroupfedconventionallybyad
7、dingMgSO4?7H2O162.5mg/kg.Seleniumgroupandselenium-fluorinegroupfedconventionallybyaddingNa2SeO3?5H2O2mg/kg.Magnesium-seleniumgroupandmagnesium-selenium-fluorinegroupfedconventionallybyaddingMgSO4?7H2O162.5mg/kg+Na2SeO3?5H2O2mg/kg.Thenobtainincisorspecimensafte
8、rputthemiceintodeathwhentheyare42-day.Toobservetheexpressionofamelogeninwithimmunohistochemicalstain.Results:TheexpressionsofAmelogenininenamelmatrixoffluoride-groupwassignificantl