共查询到18条相似文献,搜索用时 125 毫秒
1.
《中国药理学通报》2014,(4)
目的建立一种新型高效M型钾通道开放剂(QO-58)体内检测方法,研究其在大鼠体内的药代动力学特征。方法大鼠灌胃(ig,25、50、100 mg·kg-1)3个剂量和静脉单剂量注射15 mg·kg-1QO-58,于给药后不同时间采集血样,乙腈沉淀蛋白,HPLC内标法测定血药浓度,DAS2.1.1软件计算药代动力学参数。结果血浆标准曲线在0.1160 mg·L-1范围内线性良好。血浆中QO-58的最低定量限(LQD)为0.1 mg·L-1。方法回收率为89.56%160 mg·L-1范围内线性良好。血浆中QO-58的最低定量限(LQD)为0.1 mg·L-1。方法回收率为89.56%101.38%,精密度良好,日内和日间RSD中、高浓度样品均小于15%,低浓度样品小于20%。大鼠灌胃及注射给药,药时曲线均呈二室模型。QO-58灌胃给药25、50、100 mg·kg-1的主要药动学参数如下:Cmax(mg·L-1)为8.25、16.29、18.27;T12β(h):8.24、5.01、5.92;AUC0-∞(g·min·L-1):261.94、189.57、90.65。结论所建立的HPLC方法简单、专属性强,适用于QO-58在大鼠体内的药代动力学研究。 相似文献
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目的:研究丁香酚在大鼠体内的组织分布规律。方法:大鼠ig给予丁香酚后,应用高效液相色谱(HPLC)法测定丁香酚在大鼠心、肝、脾、肺、肾、胃、大肠、小肠、脑、前列腺中的含量。色谱柱为AllsphereODS-2RP-18(250mm×4.6mm,5μm),流动相为甲醇:0.5%冰醋酸=63:37(V/V,pH3.80),检测波长为280nm,柱温为30℃,流速为0.8mL.min-1。结果:丁香酚在大鼠心、肝、脾、肺、肾、胃、大肠、小肠、脑、前列腺的线性回归方程分别为A=185.87c-0.3951(0.9972)、A=174.63c-0.1013(0.9992)、A=164.5c+0.0174(0.9975)、A=191.98c-0.6649(0.9912)、A=192.34c-0.0897(0.9878)、A=180.26c+0.1690(0.9983)、A=146.29c+0.1356(0.9993)、A=159.07c+0.2213(0.9991)、A=158.58c-0.0504(0.9987)、A=97.218c+1.6503(0.9335)。丁香酚组织样品匀浆液浓度在0.011~2.158μg.mL-1范围内与峰面积比值呈良好线性关系。最低检测浓度为0.011μg.mL-1。结论:大鼠ig给药后,较快的分配到各脏器组织中,分布范围广,其中以肠、脾中水平较高,脑中较低。 相似文献
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目的:探讨加替沙星口服后在大鼠体内的组织分布情况。方法:选用大鼠口服加替沙星后,HPLC法测定各组织中加替沙星浓度,3P97推算药物分布时间和药动学参数,根据不同的药物分布时相设计实验,研究加替沙星在大鼠体内的组织分布情况。结果:加替沙星口服后吸收迅速,分布较为广泛,体内各组织中均有较高浓度,尤其明显的在生殖系统浓度较高。保留时问长。结论:加替沙星组织中分布广泛,适用于体内各种敏感菌感染治疗。 相似文献
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本文建立了异牡荆苷在大鼠血浆及不同组织中的高效液相色谱检测方法,采用RP-C18色谱柱(250mm×4.6mm,5.0μm),以甲醇-1%冰醋酸溶液(40:60,v/v)为流动相,柱温为30℃,检测波长为338nm。通过专属性、精密度、线性、准确度、稳定性、提取回收率、最低定量限等方法学考察,证实本方法可对血浆及不同组织中的异牡荆苷进行准确检测。在此方法的基础上研究了异牡荆苷在大鼠体内的药代动力学及组织分布特征。大鼠在静脉注射异牡荆苷后,在预定的时间点取样检测。结果显示异牡荆苷在高、中、低剂量(18.75,3.75,0.75mg/kg)药代动力学特征符合二室模型,在所研究的剂量范围内AUC与给药剂量呈现良好的线性相关性,符合线性动力学特征。药物t1/2α为1.54-1.84min,t1/2β为36.94-46.27min。异牡荆苷在组织中的浓度分布从高到低分别为肾>肝>肺≈卵巢>心≈脾>脑。 相似文献
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摘 要 目的:研究姜黄胶囊中姜黄素在大鼠体内药物动力学和组织分布特点。方法: SD大鼠灌胃5 g·kg-1姜黄胶囊后,采集血浆样品及肝脏、肾脏、胃、小肠等脏器,用HPLC测定各样品中姜黄素含量。结果:血浆中姜黄素在0.1~10μg·mL-1范围内线性关系良好,姜黄素t1/2为(25.13±5.63) h,tmax为0.50 h,Cmax为(0.44±0.01)μg·mL-1,AUC0-t为(2.11±0.04)μg·mL-1·h;同时在胃肠道、肝脏等脏器中均能检测到姜黄素分布。结论:姜黄胶囊能使姜黄素快速吸收,并广泛分布于大鼠各个组织中,为该药临床用药提供依据。 相似文献
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目的对正常大鼠体内川芎嗪(TMP)硝酮衍生物:(2-N-叔丁基硝酮)-3,5,6-三甲基吡嗪(2-[[(1,1-dimethylethyl)oxidoimino]methyl]-3,5,6-trimethylpyrazine,TBN)的组织分布进行研究。方法用Purospher C18柱(4.6mm×150.0 mm,5μm),以甲醇-0.05 mol.L-1磷酸二氢钾水溶液(45∶55,pH3)为流动相,检测波长为295 nm,建立大鼠血浆及组织内TBN含量分析的HPLC-UV方法,用于组织分布研究。结果静脉(80 mg.kg-1)给药后,TBN在各种组织的AUC0-360在2.48~13.74 mg.min.g-1,从高到低依次为:血浆>肺>肾>肝>脾>脑>心;MRT0-360在129.50~161.95 min,由长到短依次为:肺>脾>肾>脑>肝>心>血浆。结论本研究建立的HPLC方法专属性强、简便、快速、准确;用此法得知,TBN静脉给药后,可快速分布于各组织中,包括脑组织。 相似文献
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加替沙星在肾损害大鼠组织分布特性 总被引:1,自引:0,他引:1
目的:建立加替沙星的反相高效液相色谱方法,并对其肾损害模型大鼠体内过程进行分析研究。方法:正常和肾损害造模大鼠ig 20 mg·kg-1加替沙星后5,15 min和4 h测定各组织药物浓度,并收集尿液、胆汁与粪便,测定累积排泄率。结果:正常和肾损害造模大鼠ig20 mg·kg-1加替沙星后5,15 min和4 h,快速分布在各组织中,其中肝、肾、小肠、胃分布最多,大脑未测到药物。正常组与肾损害组大鼠ig 20 mg·kg-1加替沙星后48 h,尿液、胆汁与粪便药物累积排泄率分别为(66.2±8.8)%与(71.2±13.6)%,(8.05±3.08)%与(1.62±O.67)%和(3.63±1.65)%与(3.92±1.87)%。结论:加替沙星在肾损害模型大鼠组织分布和尿液的排泄受到影响,通过了解其体内过程,可为临床应用提供参考。 相似文献
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用HPLC—荧光检测法研究维拉帕米在大鼠体内的药代动力学和组织分布特性 总被引:5,自引:0,他引:5
目的:建立维拉帕米的反相高效液相色谱分析方法,并对其大鼠体内过程特性进行分析研究。方法:生物样品在碱性条件下经过正己烷-乙醚(30:70)提取,用Kromasil C_(18)反相柱(150mm×4.6mm,5μm),甲醇-水-三乙胺(70:30:0.1)为流动相,流速1.0mL·min~(-1),荧光检测波长为λ_(ex)275nm和λ_(em)315nm。结果:方法回收率为92.3%~104.8%,测定血药浓度线性范围为8.5~85ng·mL~(-1)(r=0.9992),最低检测限0.6ng·mL~(-1)。SD大鼠一次性灌胃盐酸维拉帕米片后血浆C-t曲线呈二室开放模型,达峰时间为(0.28±0.1)h。给药1.25h时,在主要的效应器官的浓度分布特点是:C_心>C_(大脑)>C_(小脑),在主要消除器官的浓度分布特点是:C_肝>C_肾>C_脾。结论:本法准确,灵敏度较高,可用于维拉帕米的体内过程研究。维拉帕米的肝首过效应应引起重视,主要由肾脏排泄。 相似文献
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摘要:目的:建立HPLC方法对异嗪皮啶在大鼠体内的药物动力学及组织分布进行研究。方法:以4-羟基香豆素为内标,通过HPLC检测血浆样品和各组织样品中的药物的含量:采用Diamonsil C18色谱柱(150×4.6 mm,5μm);流动相为乙腈-0.1%磷酸(20∶80);紫外检测波长为344 nm;柱温设定在30℃;流速为1.0 ml·min-1。并利用药动学软件3p97计算各药物动力学参数。结果:本法灵敏度较高,所制备的样品中杂质干扰较小,而且操作简便。异嗪皮啶主要药动学参数:tmax=(0.27±0.02)h,Cmax=(7.52±0.47)μg·ml-1,t1/2=(4.35±0.73) h,AUC0→12=(13.74±1.01)μg·ml-1·h,CL/f(s)=(1.89±0.07) mg·kg·h-1(μg·ml-1),V/f(c)=(1.37±0.04)(mg·kg-1)/(μg·ml-1)。异嗪皮啶给药30 min后体内分布较广,以脑中浓度最高,约为肺中浓度的3倍;脾中含量次之,心、肝、肺、肾中含量相当;120 min后药物浓度均明显降低。结论:异嗪皮啶C-t曲线为一室模型;异嗪皮啶在大鼠体内分布较广,但浓度普遍较低,给药120 min后药物浓度均明显降低。 相似文献
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Pharmacokinetics and tissue distribution of crotonoside 总被引:1,自引:0,他引:1
Peiao Yan Lan Zhang 《Xenobiotica; the fate of foreign compounds in biological systems》2018,48(1):28-36
1.?Crotonoside is a bioactive ingredient from Croton Herba with a strong antitumour activity. This study aimed to develop a highly sensitive and selective high-performance liquid chromatography (HPLC) method to quantify crotonoside in biological samples for pharmacokinetics and distribution studies.2.?Protein precipitation by perchloric acid was used to separate crotonoside from the biological samples, and the recovery rates for crotonoside and the internal standard (luteoloside) were >80%. All calibration curves examining the crotonoside levels in plasma and tissues were linear (all correlation coefficients >?0.99).3.?The response to crotonoside appeared to be dose disproportional to the maximum plasma concentration and the area under the time–concentration curve in plasma over the range of 12.5–50.0?mg/kg, and crotonoside was highly distributed in tissues after intravenous administration. The highest crotonoside level was detected in the liver (28.79?±?14.96?μg/g), whereas crotonoside was undetected in the brain. 相似文献
13.
目的:通过HPLC探讨注射用头孢呋辛钠在小鼠体内的药代动力学和组织分布。方法:小鼠单剂量背部推注头孢呋辛钠1000mg/kg,在不同时间取其血浆及各组织匀浆液经离心沉淀蛋白后,采用HPLC法测定其药代动力学及组织中药物浓度。结果:背部给药后血浆药—时曲线符合一室开放模型,头孢呋辛钠体内分布迅速,分布半衰期为0.6179h,消除半衰期为2.2098h,AUC为76.3199h.mg/mL,肺、肝脏及肾脏中药物浓度较高。结论:头孢呋辛钠在体内分布广、组织浓度高、消除半衰期。 相似文献
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Tetrahydropalmatine (THP), a racemic mixture, is a biologically active ingredient isolated from a traditional Chinese herb Rhizoma Corydalis (yanhusuo). The main objective of this study was to determine the brain pharmacokinetics and tissue distribution of THP enantiomers in rats after oral administration of racemic THP (rac-THP). Rats (5 animals/group/per time) were given a single oral dose of rac-THP and killed after different post-treatment times. The concentrations of THP enantiomers in plasma, cortex, cerebellum, diencephalon, brain stem, striatum and hippocampus were measured using a validated chiral high performance liquid chromatographic (HPLC) method coupled with an achiral column. The pharmacokinetic profiles of the two enantiomers in six brain regions were significantly different. The peak concentrations (Cmax) and AUC(0-infinity) values of the (-)-enantiomer were significantly greater than the corresponding values for the (+)-enantiomer while the striatum contained the highest peak concentrations compared with the plasma and other brain regions. The tissue distribution studies also revealed significant differences between the two enantiomers in all tissues except the lung. The highest concentrations of both enantiomers were found in the liver. The (-)/(+)-THP ratios in six brain regions and other tissues were consistent with that observed in plasma indicating that the stereoselective disposition of THP in rat brain and other tissues reflects the situation in plasma. 相似文献
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《Drug delivery》2013,20(8):423-429
Precipitation of etoposide and adverse events associated with the co-solvents in intravenous solutions can be avoided by using liposomal etoposide (LE). The pharmacokinetics and distribution of the commercial formulation (ETPI) and LE were compared in rats. The pharmacokinetic profiles were biphasic and similar in the initial phase (Cmax, Vd, and t1/2α). However, LE showed a 60% increase in AUC with a 35% decrease in clearance (p?<?0.05). This decreased clearance resulted in a 70% increase in the MRT of etoposide. The uptake of etoposide from LE was higher in macrophage-phagocytic endowed tissues indicating that LE is superior to ETPI for targeted delivery of etoposide. 相似文献
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目的: 通过研究磷酸川芎嗪乳剂在大鼠体内的药动学和组织分布,探究磷酸川芎嗪乳剂的生物利用度和脑靶向性。方法: 大鼠静脉注射50 mg·kg-1磷酸川芎嗪制剂,给药后,在不同时间采血,最后切除大鼠心脏,肝脏,脾脏,肺,肾,和脑。所有样品均采用液相色谱-质谱/质谱联用法(HPLC/MS/MS)进行检测,用DAS 2.1.1软件使用非房室分析计算药动学参数。结果: 与参比制剂(磷酸川芎嗪注射液)相比,乳剂制剂血浆中的药动学参数无显著差异。在血浆中,乳剂的AUC0-∞和Cmax分别为(4 406.96±977.08)mg·L-1·min和(52.131±13.61)mg·L-1。组织分布研究发现磷酸川芎嗪乳剂较参比制剂在脑组织分布更多。结论: 磷酸川芎嗪乳剂在心、肝、脾、肺、肾中有靶向趋势,比参比制剂更易分布在组织中。磷酸川芎嗪乳剂制剂具有脑靶向性。 相似文献
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目的比较试验制剂注射用依托泊苷纳米粒与参比制剂依托泊苷注射液的生物等效性及组织分布特征。方法比格犬随机交叉单次静脉注射给予试验制剂与参比制剂各10 mg.kg-1进行药动学试验,评价生物等效性。荷瘤小鼠(雌性)静脉注射给予25 mg.kg-1试验制剂与参比制剂,测定不同时间点各组织器官中的药物含量。药物浓度采用以替尼泊苷为内标的荧光检测法测定。结果试验制剂与参比制剂主要药动学参数分别为tmax:(1.500±0.000)、(1.500±0.000)h;ρmax:(3.033±0.644)、(3.323±0.552)mg.L-1;AUC(0-9.5 h):(5.566±0.592)、(7.173±0.920)h.mg.L-1。给药后5 min,注射用依托泊苷纳米粒在肝、肠、肌肉、脾及实体瘤中分布量较高,给药后3 h在实体瘤的含量显著高于参比制剂。结论试验制剂与参比制剂生物不等效,试验制剂在实体瘤中的含量高于参比制剂,静脉注射后3 h差异显著。 相似文献
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Assessement of the pharmacokinetics,tissue distribution and excretion studies of a novel antiplatelet agent S007‐867, following administration to rats 下载免费PDF全文
Hardik Chandasana Yashpal S. Chhonker Tulsankar Sachin Laxman Yarra Durga Prasad Anil Kumar K. S. Dinesh K. Dikshit Rabi S. Bhatta 《Drug testing and analysis》2016,8(7):723-729
S007‐867 is a promising novel antiplatelet agent with better efficacy and lesser bleeding risk than existing agents. The present study investigated the absorption, tissue distribution, and excretion of S007‐867 in rat model for further advancement of the molecule. A simple and robust ultra fast liquid chromatography‐tandem mass spectrometry (UFLC‐MS/MS) bioanalytical method was used to determine S007‐867 in various matrices. Following oral administration, the compound was quickly dispersed in the various tissues and peak concentration levels were achieved within 0.5–1 h. Overall, exposure of drug, i.e., AUC in different tissues was found in the order of small intestine > liver > heart > spleen > lungs > kidney > brain. The total recoveries of the S007‐867 within 96 h were 3.36% in urine and faeces. This might be due to a first‐pass effect by the liver and intestine as most of the drug was eliminated in metabolite form. These findings provide a crucial information about further development of S007‐867 as antithrombotic agent. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献