HPLC法研究唑尼沙胺分散片在中国健康志愿者的药动学简

目的：建立人血浆唑尼沙胺浓度的测定方法,研究唑尼沙胺分散片在健康受试者体内的单、多剂量药动学.方法：30 名健康志愿者（男女各半）分3 组,分别单剂量（200、300、400 mg）口服唑尼沙胺分散片,300 mg 剂量组单剂量结束后继续进入多剂量研究,每日1 次,连续14 d.采用HPLC法测定血浆中唑尼沙胺的浓度,用DAS 2.1.1 软件计算药动学参数.结果：在200 ～400 mg 剂量范围内,唑尼沙胺的AUC0-t、AUC0-∞、Cmax 均与剂量呈线性关系,中剂量组多次给药后的药动学参数如下：Cmax 为（27.305 ± 5.201） μg·mL-1;tmax 为（2.556 ± 0.726） h;t1/2 为（59.286 ± 8.882） h;AUC0-t 为（2 435.713 ± 668.845）μg·h·mL-1;AUC0-∞ 为（2 522.230 ± 720.554） μg·h·mL-1.结论：男、女受试者单次给药后的Cmax存在显著性差异.唑尼沙胺在连续多次给药后,可达稳态血药浓度.     

胡椒碱胶囊在健康人体内的药动学研究

目的建立人血浆中胡椒碱的HPLC-MS/MS测定方法并研究健康受试者单剂量和多剂量口服胡椒碱胶囊的人体药动学。方法 8名健康志愿者先后单次和多次接受胡椒碱胶囊20mg,应用HPLC-MS/MS测定血药浓度,计算药动学参数。结果血浆中胡椒碱浓度在0.50～800.00ng.mL-1与峰面积呈良好的线性关系,日内、日间变异系数及回收率均达到临床药动学研究的要求。受试者口服胡椒碱胶囊单次和多次后体内过程均符合二房室模型,主要药动学参数Cmax分别为（290.00±42.47）和（595.39±108.61）ng.mL-1;平均AUC0-∞为（5 932.26±1082.01）和（15 796.67±5 050.39）ng.h.mL-1,平均血浆消除半衰期t1/2β分别为（13.26±1.91）和（15.82±4.95）h。结论口服胡椒碱胶囊在健康人体内的药动学符合二房室模型特征,多次给药体内无蓄积作用。     

羟丙茶碱药代动力学的研究及其临床监测

本文以反相高效液相色谱法对5名健康受试者进行了体内羟丙茶碱药代动力学的初步研究,口服400mg 单剂量后的血药浓度按单室一级吸收模型拟合药一时曲线,求得各项动力学参数,并对30名患者进行了稳态血药浓度的监测.     

国产注射用比阿培南人体药动学研究

目的建立人血浆比阿培南(biapenem)浓度的反相高效液相色谱测定法(HPLC)。研究健康受试者单剂量和多剂量注射国产比阿培南后的人体药动学。方法11名健康志愿者分别接受比阿培南注射液静脉滴注300mg单次和多次,应用反相高效液相色谱法测定血药浓度,计算药动学参数。结果血浆中比阿培南浓度分别在0.5~10μg/ml浓度范围内呈良好的线性关系,日内、日间变异系数及回收率均达到临床药动学研究的要求。受试者静注比阿培南单剂和多剂后体内过程均符合二房室模型,主要药动学参数cmax分别为(16.64±3.32)和(17.01±3.92)mg/L;平均AUC(0~∞)(27.28±8.94)和(26.85±7.46)[mg/(L.h)],平均血浆消除半衰期t1/2β分别为(1.17±0.69)和(0.85±0.14)h。结论国产注射用比阿培南在健康人体内的药动学符合二房室模型特征;多次给药体内无蓄积作用。     

非索伪麻缓释胶囊在中国健康人体内的药动学

目的建立高效液相色谱-质谱联用法同时测定人血浆中盐酸非索非那定和盐酸伪麻黄碱的方法,研究健康志愿者单剂量和多剂量口服非索伪麻缓释胶囊后非索非那定和伪麻黄碱在人体内的药动学。方法以苯乙双胍为内标,用C18柱,醋酸铵及乙腈组成流动相,血浆样品经乙腈沉淀蛋白萃取后,电喷雾离子化源,选择性正离子反应监测,测定血浆中盐酸非索非那定和盐酸伪麻黄碱的浓度。健康志愿者24名,随机抽取以研究单剂量和多剂量口服非索伪麻缓释胶囊的药动学。结果血药浓度在给药数次后第六天已达到稳态状态。2次/d服药可以维持体内波动较小的稳态血药浓度。单剂量或多剂量口服受试制剂,两组分药动学参数在性别间均无显著性差异(P>0.05)。ρmax、AUC0-40、和AUC0-∞药动学参数与剂量相关。结论所建方法预处理简单,重现性好,专属性强,灵敏度高,适合测定非索非那定和伪麻黄碱的血药浓度,可用于盐酸非索非那定和盐酸伪麻黄碱复方制剂的临床药代动力学研究。     

单剂量和多剂量口服布洛伪麻那敏干混悬剂在健康人体的药代动力学

目的研究布洛伪麻那敏干混悬剂(抗感冒药)在健康成年志愿者体内的药代动力学。方法3个单剂量组及1个多剂量组口服给药,用高效液相色谱-紫外检测法测定给药后不同时间布洛芬血药浓度,高效液相色谱-串联质谱法测定给药后不同时间伪麻黄碱和氯苯那敏血药浓度。用DAS Ver 2.0计算药代动力学参数并进行统计分析。结果3组单剂量及连续口服布洛芬(单剂:200,400,600 mg;连续:200 mg)、伪麻黄碱(单剂:30,60,90 mg;连续:30 mg)及氯苯那敏(单剂:2,4,6 mg;连续2 mg)7天后的主要药代动力学参数(tmax,Cmax,AUC0-t,AUC0-∞,t1/2等)结果显示,布洛芬、伪麻黄碱和氯苯那敏血药浓度-时间曲线拟合结果均符合一室模型,体内过程均呈线性动力学特征。结论连续多次给药,3组分都不存在药酶诱导或抑制现象。     

多剂量口服甲磺酸加替沙星片在健康志愿者的药代动力学

目的 研究多剂量口服甲磺酸加替沙星片的药代动力学。方法 选择中国健康成年志愿者1 0名,1 8～40岁男性,口服甲磺酸加替沙星片,每次400mg,每日1次,连续10日。用高效液相色谱法测定血药浓度,用3P97软件拟合药代动力学参数。结果 受试者口服甲磺酸加替沙星片,体内过程为二房室模型。连续给药10日后,Auc0-8AUC0-t值比首次给药显著增加,但第10日给药后AUC0-t与首次给药后AUC0-8比较差异无统计学意义。其余参数Cmax,t1/2β,Vd等差异亦无统计学意义。平均稳态血药浓度Cav为0.84±0.18 mg·L-1,稳态血药浓度时间曲线下面积AUCss为26.16±4.53 mg·h·L-1,累积比为1.35±0.87,波动系数1.68±0.16。受试者给药期间未出现严重药物不良反应。结论 本文给药方案,在人体内可达到有效血浆浓度,且连续给药1 0日体内未见蓄积。     

单剂口服盐酸托烷司琼胶囊的人体药代动力学

目的　研究口服单剂盐酸托烷司琼胶囊人体药代动力学。方法　22名健康志愿者口服盐酸托烷司琼胶囊,18例剂量为10 mg, 4例剂量为20mg,于给药后设定时间点采血, 用反相高效液相色谱法-二极管阵列紫外法测定受试者血浆中的盐酸托烷司琼浓度, 并对盐酸托烷司琼的血药浓度-时间数据进行拟合,求算其药代动力学参数。结果　10和20 mg剂量组盐酸托烷司琼胶囊的药代动力学参数分别为:达峰时间tmax为(2.53±0.52)和(2.35±0.90) h;Cmax为(10.16±2.89) 和(19.56±4.04) mg.L-1,曲线下面积AUC0-24h 分别为(113.61±40.34)和(213.36±42.53) mg.h.L-1。结论　单剂量给药,盐酸托烷司琼胶囊在志愿者体内分布及消除较快,且Cmax及AUC与剂量成正比。     

单剂量口服盐酸曲马多在维吾尔族和汉族健康受试者体内的药代动力学研究

目的:研究盐酸曲马多在中国维吾尔族和汉族健康受试者体内的药动学。方法:选择维吾尔族和汉族健康志愿者各10名(5男5女),每名口服盐酸曲马多100mg后,用高效液相色谱荧光检测法测定受试者血浆中盐酸曲马多的血药浓度,研究其药代动力学过程,用DasVer2.0药动学软件进行数据处理。结果:汉族、维吾尔族两个民族口服盐酸曲马多后药时曲线均符合一室开放模型。主要药代动力学参数分别为:t1/(26.2±1.0)和(7.1±1.9)h,tma(x2.4±0.7)和(2.6±0.6)h,Cma(x401.4±78)和(350.6±46)μg·L-1,AUC0-3(64297.1±1261.8)和(4111.6±1336.0)μg·h·L-1,AUC0-∞(4456.1±1318.5)和(4368.5±1603.5)μg·h·L-1。结论:服用盐酸曲马多后,汉族、维吾尔族健康受试者的Cmax,AUC0-t,AUC0-∞个体间差异较大,同一民族受试者单剂量口服盐酸曲马多后的药动学参数无明显差异(P>0.05),男女受试者单剂量口服盐酸曲马多后的药动学参数在统计学上有显著性差异(P<0.05)。     

盐酸左氧氟沙星软胶囊、硬胶囊和片剂的人体药动学研究

目的:使用HPLC法测定人血浆中左氧氟沙星的浓度,并研究盐酸左氧氟沙星软胶囊、硬胶囊和片剂在健康人体内的药代动力学。方法:20名健康男性志愿者单剂量口服200mg盐酸左氧氟沙星后,采集不同时间点血样测定血药浓度。结果:左氧氟沙星线性范围为0.041～5.180mg/L,日内和日间精密度(RSD)均小于5.0%。盐酸左氧氟沙星软胶囊主要药动学参数:tmax:(0.8±0.3)h;Cmax:(2.8±0.9)mg/L;AUC0-30:(14.7±1.8)mg·L-1.h;AUC0-∞:(15.4±1.9)mg·L-1.h;t1/2:(6.9±0.4)h。结论:盐酸左氧氟沙星软胶囊的药动学参数与硬胶囊和片剂的差异无统计学意义。     

Ⅰ类新药布格呋喃的临床耐受性和安全性研究

目的:确定健康受试者对单次和多次口服布格呋喃胶囊的耐受性和安全性。方法:本研究分为单次给药和多次给药两组,单次给药耐受性试验纳入36名健康志愿者,男女各半,分为6个剂量组:15,30,45,60,75和90 mg组,其中包括安慰剂6名。多次给药的耐受性试验纳入10名健康志愿者,男女各半,服用布格呋喃胶囊25 mg,tid,观察9 d。两组的观察指标包括:生命体征、血常规、血生化、电解质、心电图,记录不良事件,7 d后电话随访。结果:所有46名志愿者完成研究。布格呋喃对体温、脉搏和呼吸影响较多,主要是降低脉搏、呼吸次数和体温变化(升高或降低),但是安慰剂组也出现了体温的波动。心电图和实验室检查未见有临床意义的异常。单次给药组36例受试者中安慰剂组6受试者没有不良反应出现,服用药物的受试者有9例出现不良反应,以困倦最多见。连续给药组10例受试者中有8例有不同程度的不良反应,以口干最多见。不良反应均为轻、中度,给予观察或对症处理后均缓解。不良反应的出现与剂量无依赖关系。结论:通过对健康受试者单次和连续给药进行的耐受性试验,结果表明布格呋喃耐受性良好。     

福多司坦在健康受试者体内的药代动力学

目的研究健康受试者单剂量及多剂量口服福多司坦片后的药代动力学特征。方法36名健康受试者随机分为高、中、低3个剂量组，每组12人，男女各半，分别单剂量口服福多司坦片600，400和200 mg；中剂量组受试者单次口服福多司坦400 mg后，经过1周清洗期，再每日3次，每次400 mg，连续服药5 d。测定血浆中福多司坦的浓度，计算药代动力学参数。结果高、中、低3个单剂量组福多司坦的消除半衰期及体内平均驻留时间相近，AUC_{0-10 h}和C_max均与剂量呈线性关系；男性受试者的T_max，C_max和AUC均小于女性受试者，T_1/2均大于女性受试者。统计学结果表明男性与女性间C_max和AUC的差异与性别无关，而与体重有关。中剂量组多次给药后的平均稳态血药浓度为(4.1±0.8) μg·mL^-1，消除半衰期为(2.5±0.4) h。结论剂量在200～600 mg时，福多司坦在健康受试者体内呈线性药代动力学特征，多剂量给药与单剂量给药的药代动力学参数基本一致。     

氯酚伪麻缓释片中氯雷他定在健康志愿者体内的药动学(英文)

目的:研究健康受试者单剂量及多剂量口服氯酚伪麻缓释片后氯雷他定的药动学特征。方法:24名健康受试者随机分为Ⅰ、Ⅱ两组,每组男、女受试者各6名,Ⅰ组受试者首先单次口服氯酚伪麻缓释片1片;间隔1 wk清洗期后,该组继续进行多次给药试验,受试者连续5 d,每日2次,每次1片,d 6早晨服药1次;Ⅱ组受试者单次口服氯酚伪麻缓释片2片。用HPLC-MS法测定血浆中氯雷他定的浓度,计算药动学参数。结果:健康受试者单次口服氯酚伪麻缓释片1片、2片后,氯雷他定的药动学参数分别为:c_(max)为(1.5±s 0.7)和(3.1±1.3)μg·L~(-1),AUC为(5.7±2.7)和(11±5)μg·h·L~(-1),2组的t_(1/2)和t_(max)相近。多次给药后氯雷他定的药动学参数:AUC~(ss)为(5.9±2.4)μg·h·L~(-1),c_(max)~(ss)、c_(min)~(ss)和c_(av)~(ss)分别为(1.8±0.9)、(0.15±0.06)和(0.49±0.20)μg·L~(-1),D(F)为(3_3±0.8)%。结论:单次口服氯酚伪麻缓释片后,氯雷他定呈线性药动学特征;多次给药后氯雷他定的体内药动学特征无显著变化。     

注射用比阿培南单剂量及多剂量静脉滴注给药的人体药动学研究

目的:研究注射用比阿培南单剂量及多剂量静脉滴注的人体药动学过程。方法:采用单中心、开放、随机自身对照设计,12名健康受试者单剂量恒速静脉滴注注射用比阿培南300mg;单剂量试验结束后进入多剂量给药试验,q12h,连续给药5d。采用高效液相色谱法测定血浆和尿液中比阿培南的浓度,并采用DAS药动学软件对试验数据进行处理,求算有关药动学参数。结果:12名健康受试者单剂量静脉滴注注射用比阿培南后,主要药动学参数分别为cma(x13.74±4.40)μg.mL-1,tma(x0.51±0.11)h,t1/2β(1.34±0.41)h,t1/2(z1.18±0.23)h,AUC0～(t15.60±2.95)μg.h.mL-1,12h平均尿液累积排泄率为(33.04±13.54)%。多剂量静脉滴注达稳态后的主要药动学参数cssmin因低于定量下限而未检测出,cssmax为(15.12±3.27)μg.mL-1,cssav为(1.43±0.23)mg.L-1,tssmax为(0.49±0.05)h,t1/2β为(1.33±0.39)h,t1/2z为(1.02±0.18)h,AUC0～t为(17.18±2.73)μg.h.mL-1,血药浓度波动系数DF为(10.56±1.55)%。结论:注射用比阿培南静脉滴注给药300mg,q12h,连续给药5d,药物在体内无蓄积,安全性好。     

巴戟天寡糖胶囊在中国健康志愿者中的耐受性研究

目的：观察健康志愿者对巴戟天寡糖胶囊的耐受性,为II期临床研究提供安全有效的给药剂量及方案。方法：根据改良Black well法,起始剂量为50 mg。共入选健康受试者42例,其中单剂量组的32例受试者分别接受了6个剂量组（50 mg组2例、150 mg组4例、300 mg组6例、600 mg组6例、800 mg组8例和1 000 mg组6例）的单剂量巴戟天寡糖胶囊治疗;连续给药剂量组的10例受试者接受800 mg&#8226;d-1,qd,连续服药7 d的巴戟天寡糖胶囊治疗。分别比较了单次给药和连续给药前后受试者的生命体征、心电图和实验室检查结果的变化,单次服药和连续服药后观察到的不良事件和受试者报告的不良反应。结果：42例受试者全部完成研究,且未出现具有临床意义异常的生命体征、心电图和实验室检查结果,主要的不良反应为口干、疲乏、困倦,与剂量相关,程度轻微。结论：本研究中的中国健康受试者对50~1 000 mg&#8226;d-1的巴戟天寡糖胶囊具有良好的耐受性。     

Pharmacokinetics and pharmacodynamics of TF-505, a novel nonsteroidal 5alpha-reductase inhibitor,in normal subjects treated with single or multiple doses

AIMS: To assess the tolerability, pharmacokinetics and pharmacodynamics of a novel nonsteroidal and noncompetitive inhibitor of type I and type II 5alpha-reductases, (-)-(S)-4-[1-[4-[1-(4-isobutylphenyl) butoxy]benzoyl]indolizin-3-yl]butyric acid (TF-505), after single and multiple oral doses in healthy volunteers. METHODS: In the single-dose study, six young adult males in each dose group received 25 mg or 50 mg of TF-505, and six older males (>or= 40 years) in each dose group received 75 mg or 100 mg of TF-505. The subjects were given the drug in ascending dose and in the fasting state. Six subjects also received 50 mg of TF-505 after breakfast in a two-period crossover manner. In the multiple-dose study, six older males in each dose group received 12.5 mg or 25 mg TF-505 after breakfast daily for 7 days. Plasma concentrations of TF-505, dihydrotestosterone (DHT) and testosterone were measured. The pharmacokinetics of TF-505 were analysed by a compartment model with first-order absorption, first-order elimination and a lag time. Pharmacokinetic and pharmacodynamic relationships were evaluated by indirect response modelling with inhibition of input. RESULTS: Maximum plasma concentration (Cmax) and the area under the concentration-time curve (AUC) increased proportionately after the single dose up to 50 mg and with the multiple doses. Linearity was not detected between 75 and 100 mg of TF-505. Dose dependency was also noted for the effect of TF-505 on DHT concentrations following single doses up to 50 mg and multiple doses. Plasma DHT concentrations decreased maximally to 58.2, 49.5, 54.2 and 49.8% of basal values at 8-12 h after single administration of 25, 50, 75 and 100 mg TF-505, respectively, and to 60.5 and 49.4% at the 7th and 5th dose following multiple doses of 12.5 and 25 mg TF-505, respectively. The predicted effect curves matched the observed data when the indirect response model was applied to the time course of the suppressant effect of TF-505 on plasma DHT concentrations after both the single and multiple studies. Fifty percent inhibitory concentrations (IC50) of 0.82, 1.48, 1.31 and 0.88 micro g ml(-1), zero-order rate constants for the onset of plasma DHT concentration changes (kin) of 17.8, 17.4, 17.0 and 10.7% h(-1) and first-order rate constants for increase in plasma DHT concentrations to basal values (kout) of 0.17, 0.16, 0.17 and 0.10 h(-1) for the single study at doses of 25, 50, 75 and 100 mg, respectively, were attained. In the multiple-dose study, IC50s were 1.74 and 1.49 micro g ml(-1) for the 12.5 and 25 mg doses, respectively. No serious adverse events related to TF-505 were observed. CONCLUSIONS: TF-505 was well tolerated in healthy male volunteers. Accumulation of TF-505 in plasma was not observed during multiple dosing. The indirect response model described the relationships between pharmacokinetics and pharmacodynamics of TF-505. Such modelling is expected to yield an appropriate dosage regimen in subsequent clinical trials.     

Pharmacokinetics of butorphanol tartrate administered from single-dose intranasal sprayer.

PURPOSE: The pharmacokinetics and tolerability of single and multiple doses of intranasal butorphanol tartrate using a single-dose metered sprayer were studied. METHODS: In this randomized, open-label, two-way crossover study, 24 healthy subjects received either 1 or 2 mg of intranasal butorphanol as a single dose (treatment A) and 1 or 2 mg of intranasal butorphanol every six hours for seven doses (treatment B). During phase 1, 12 subjects selected at random received a single 1-mg dose and the other 12 a single 2-mg dose. During phase 2, those who received the 1-mg single dose received 1 mg every six hours for seven doses. During phase 3, those who received the 2-mg single dose received 2 mg every six hours for seven doses. Serial blood samples were collected over 12 hours. Pharmacokinetic parameters were determined using noncompartmental methods. RESULTS: Mean (coefficient of variation) values for the area under the concentration-versus-time curve (AUC) from time zero to infinity (AUC0-infinity) were 4.15 (26.4%) and 10.42 (19.6%) ng.hr/ml after single doses of 1 and 2 mg of butorphanol, respectively. At steadly state, mean values for the AUC from time zero to the dosing interval (AUC0-tau) were 4.82 (40.2%) and 10.60 (22.3%) ng.hr/mL, respectively. The accumulation indices were around 2 for both the 1- and 2-mg doses. Median time to maximum concentration values ranged from 15 to 30 minutes for each treatment. Dose-normalized parameters AUC0-infinity. AUC0-tau and maximum concentration (Cmax) were significantly larger after a single 2-mg versus 1-mg dose (p < 0.05). CONCLUSION: Intranasal butorphanol has rapid absorption and predictable accumulation after multiple doses administered with single-dose metered sprayers. Intranasal administration of butorphanol was well tolerated and adverse events were generally mild to moderate in severity and as expected for this drug.     

Ketoconazole inhibits the metabolism of tolterodine in subjects with deficient CYP2D6 activity

AIMS: To investigate the pharmacokinetics and safety of tolterodine and tolterodine metabolites after single-and multiple-dose administration in the absence and presence of ketoconazole, an inhibitor of cytochrome P450 (CYP) 3A4, in healthy volunteers with deficient CYP2D6 activity, i.e. poor metabolisers of debrisoquine. METHODS: Eight healthy volunteers received single oral doses (2 mg) of tolterodine l-tartrate. Following a wash-out period of about 3 months, six of the subjects participated in a multiple-dose (1 mg twice daily) phase of the study. Ketoconazole 200 mg was given once daily for 4-4.5 days during both the single and multiple dose tolterodine administration phases. Blood samples were drawn and the pharmacokinetics of tolterodine and its metabolites were determined. RESULTS: A decrease (P<0.01) in apparent oral clearance of tolterodine, from 10- 12 l h-1 to 4.3-4.7 l h-1, was obtained during concomitant administration of ketoconazole, yielding at least a two-fold increase in the area under the serum concentration-time curve after single as well as after multiple doses following single dose administration of tolterodine. The mean (+/-s.d.) terminal half-life increased by 50% from 9.7+/-2.7 h to 15+/-5.4 h in the presence of ketoconazole. CONCLUSIONS: CYP3A4 is the major enzyme involved in the elimination of tolterodine in individuals with deficient CYP2D6 activity (poor metabolisers), since oral clearance of tolterodine decreased by 60% during ketoconazole coadministration. This inhibition resulted in 2.1-fold increase in AUC.     

创新药吡非尼酮胶囊在中国健康人体耐受性和安全性研究

目的：评价中国健康受试者单次和多次口服1.1类创新药吡非尼酮胶囊后的人体耐受性和安全性。方法：依据动物实验结果推算起始和最大剂量，以健康受试者为研究对象，从安全起始剂量开始，进行单次和多次给药耐受性试验。采用随机单中心临床研究，统一餐后给药。单次给药耐受性试验：36例，随机分成6个剂量组：200 mg（2例），400 mg（4例），800 mg（6例），1 200 mg（8例），1 800 mg（8例），2 400 mg（8例）；多次给药耐受性试验：12例，分成2个剂量组：400 mg（6例），600 mg（6例），每天3次，连续给药7 d。观察受试者用药前后症状、生命体征、实验室检查变化（包括血尿常规、肝肾功能、心电图等）、并记录药品不良事件。结果：单次和多次给药耐受性试验的受试者用药前后生命体征和心电图无显著变化，实验室检查等表明无器质性损伤。依据试验终止标准，20例受试者完成4个剂量组的单次耐受性研究。其中单次给药耐受性试验有12例，多次给药耐受性试验有7例受试者在口服药物后出现轻中度恶心、呕吐、烧心、食欲不振、头晕和头痛等不良事件，未经处理自行缓解。本试验过程中未发生严重不良事件。结论：中国健康人体对吡非尼酮胶囊单次（200~1 200 mg）或多次（400~600 mg，tid×7 d）给药的安全性和耐受性良好，将为临床合理应用提供依据。     

盐酸度洛西汀对他林洛尔人体药物动力学的影响

目的通过考察盐酸度洛西汀对P糖蛋白底物——他林洛尔药物动力学的影响,探讨盐酸度洛西汀对P-糖蛋白的作用。方法采用随机开放,两周期自身前后对照试验设计,12名健康受试者第1周期单剂量口服他林洛尔1片(50 mg),第2周期受试者服用度洛西汀(30 mg.次-1,2次.d-1),连续服用6 d,于第7日晨加服他林洛尔1片(50 mg)。采用高效液相色谱-串联质谱检测血样药物浓度,计算并比较药物动力学参数。结果受试者多剂量服用盐酸度洛西汀后,他林洛尔的AUC0-60和Cmax由单用时的1 348.54、91.90 ng.mL-1分别增加至1 498.30和125.21 ng.mL-1。AUC和Cmax分别增加了11%和36%。等效性分析显示2周期AUC和Cmax比值的90%置信区间分别为77%~106%和68%~112%,均落于等效范围之外。他林洛尔的其他药动学参数tmax,t1/2,CL/F,V/F在2周期间并无显著性差异。结论盐酸度洛西汀增加了他林洛尔的生物利用度,可能的原因是盐酸度洛西汀抑制了肠道P-糖蛋白的功能,增加了其吸收程度。