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1、第23卷第4期化學(xué)研究中國(guó)科技核心期刊2012年7月CHEMICALRESEARCHhxyj@henu.edu.cn朱砂中汞的生物可接受性及其吸收與排泄霍韜光,王海宇,林欣然。,暢蓓,李維凱,楊卉蕾,張穎花,姜泓¨(1.中國(guó)醫(yī)科大學(xué)公共衛(wèi)生學(xué)院,遼寧沈陽(yáng)110001;2.中國(guó)醫(yī)科大學(xué)預(yù)防醫(yī)學(xué)院,遼寧沈陽(yáng)110001;3.中國(guó)醫(yī)科大學(xué)臨床醫(yī)藥學(xué)院,遼寧沈陽(yáng)1i0001)摘要:研究了朱砂中汞的生物可接受性及其在體內(nèi)的吸收與排泄.采用體外消化透析法測(cè)定了朱砂中汞的生物可接受性;計(jì)算了大鼠灌胃給予臨床劑量(50mg/kg)朱砂后汞的藥動(dòng)學(xué)參數(shù);測(cè)定了給予臨床劑量的朱砂后大鼠糞樣中汞
2、的排泄量.結(jié)果表明,朱砂中汞的溶出率為0.011,生物可接受率為0.0033.大鼠灌胃給予臨床劑量的朱砂后,汞的藥動(dòng)學(xué)參數(shù)為:最高血藥濃度()為(6.3-+-】.3)g/L,達(dá)峰時(shí)間(?)為(1.34-0.4)h,半衰期(/2)為(4.2±o.5)h,血藥濃度一時(shí)間曲線(xiàn)下面積(AUC)為(54.7±8.7)g·h·L_。.給予朱砂12h后汞在糞便中排泄量最大,96h后在糞樣中仍可檢測(cè)到少量汞.朱砂中汞的生物可接受性較低,在體內(nèi)吸收少,滯留時(shí)間較長(zhǎng),排泄緩慢,長(zhǎng)期服用可在體內(nèi)蓄積,產(chǎn)生毒性.關(guān)鍵詞:朱砂;汞;生物可接受性;吸收與排泄中圖分類(lèi)號(hào):0614.24文獻(xiàn)標(biāo)志碼:A文章
3、編號(hào):1008—1011(2012)04—0052—04Bi0accessibilityaswellasabsorptionandexcretionofmercuryincinnabarHUOTao—guang,WANGHal—yu,LINXin-ran。,CHANGBei,LIWei—kaiYANGHui—lei,ZHANGYing—hua,JIANGHong(1.CollegeofPublicHealth,ChinaMedicalUniversity,Shenyang110001,Liaoning,China;2.CollegeofPreclinicalMedicine
4、,ChinaMedicalUniversity,ShenyangI10001,Liaoning,China;3CollegeofClinicalMedicine,ChinaMedicalUniversity,Shenyangii0001,Liaoning,China)Abstract:Thebioaccessibmtvandabsorptionandexcretionofmercuryincinnabarwerestudied.Thebioaccessibilityofmercuryincinnabarwasevaluatedbyadoptinginvitrodiges—t
5、ionanddialysismethodtosimulatetheconditionsofgastriccompartmentandintestina1com—partmentofmercury.Thepharmacokineticparametersofmercurywithrespecttointragastricadministrationofcinnabarataclinicaldosageof5Omg/kgforratswerecalculated;andtheex—cretionfractionofmercuryinthefecalsampleoftherats
6、afterintragastricadministrationofcinnabarataclinicaldosagewasdetermined.Resultsindicatethat,inthegastriccompartment,thesolubilityofmercuryfromcinnabaris0.011;andthebioaccessibilityofmercuryintheintestinalcompartmentiS0.0033.Thetime-coursepharmacokineticparametersofmercurywhentheratsareintr
7、agastricallygivencinnabarataclinicaldosageof50mg/kgaredeterminedasthemaximumconcentrationinbloodCa(6.3±1.3)t~g/L,timetoreachthemaximumconcentrationt(1.3±0.4)h,half-timeperiodt1/2(4.2±0.5)h,andareaunderthecon—centration—timecurveAUC(54.7±8.7)/xg·h/L.Alargequant