Microdialysis recovery of cefradine <i>in vitro</i>

YANG Xianmi; XU Xiaojian; WANG Xuebin; WANG Zhuo; Wang Tongsheng

doi:10.3969/j.issn.1006-0111.201910044

Volume 38 Issue 2

Apr. 2020

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Article Navigation > Journal of Pharmaceutical Practice and Service > 2020 > 38(2): 120-123, 128

YANG Xianmi, XU Xiaojian, WANG Xuebin, WANG Zhuo, Wang Tongsheng. Microdialysis recovery of cefradine in vitro[J]. Journal of Pharmaceutical Practice and Service, 2020, 38(2): 120-123, 128. doi: 10.3969/j.issn.1006-0111.201910044

Citation:

YANG Xianmi, XU Xiaojian, WANG Xuebin, WANG Zhuo, Wang Tongsheng. Microdialysis recovery of cefradine in vitro[J]. Journal of Pharmaceutical Practice and Service, 2020, 38(2): 120-123, 128. doi: 10.3969/j.issn.1006-0111.201910044

Microdialysis recovery of cefradine in vitro

doi: 10.3969/j.issn.1006-0111.201910044

YANG Xianmi^{1, 2
,},
XU Xiaojian^{1, 2},
WANG Xuebin²,
WANG Zhuo^{1, 2
,
,},
Wang Tongsheng^{1
,
,}

1.
Graduate School, Anhui University of Chinese Medical, Hefei 230012, China
2.
Department of Pharmacy, Changhai Hospital, Naval Medical University, Shanghai 200433, China

Received Date: 2019-10-15
Rev Recd Date: 2019-12-27

Available Online: 2020-04-23

Publish Date: 2020-03-01

Abstract

Objective To determine the in vitro recovery rate and influencing factors of cefradine microdialysis. Methods Two different methods (loss method, gain method) of microdialysis concentration and LC-MS/MS were used to determine the in vitro recovery rate of cefradine. The effect of flow rate and concentration of the perfusate on the recovery rate were investigated. To explore the feasibility of microdialysis technology for pharmacokinetic studies in cefradine. Results The LC-MS/MS analysis method was linear in the required range and the method was sensitive and reliable. There was no significant difference in the recovery rate measured by gain or loss method. Under the same conditions, the in vitro recovery of the probe decreased with increasing flow rate, independent of the drug concentration around the probe. Conclusion Microdialysis technique could be used to study the pharmacokinetics of cefradine, and loss method could be used to determine the in vivo recovery rate and pharmacokinetics of cefradine on microdialysis.
- microdialysis,
- cefradine,
- in vitro recovery

References

[1]	NANDI P, LUNTE S M. Recent trends in microdialysis sampling integrated with conventional and microanalytical systems for monitoring biological events: a review[J]. Anal Chim Acta,2009,651(1):1-14. doi: 10.1016/j.aca.2009.07.064
[2]	HURTADO F K, WEBER B, DERENDORF H, et al. Population pharmacokinetic modeling of the unbound levofloxacin concentrations in rat plasma and prostate tissue measured by microdialysis[J]. Antimicrob Agents Chemother,2014,58(2):678-686. doi: 10.1128/AAC.01884-13
[3]	K HURTADO F, LAUREANO J V, DE A LOCK G, et al. Enhanced penetration of moxifloxacin into rat prostate tissue evidenced by microdialysis[J]. Int J Antimicrob Agents,2014,44(4):327-333. doi: 10.1016/j.ijantimicag.2014.06.011
[4]	李奕, 周佳, 王卓, 等. 用微透析法研究肺炎大鼠灌胃左氧氟沙星的肺部药动学[J]. 药学服务与研究, 2013, 13(5):365-368.
[5]	MARCHAND S, CHAUZY A, DAHYOT-FIZELIER C, et al. Microdialysis as a way to measure antibiotics concentration in tissues[J]. Pharmacol Res,2016,111:201-207. doi: 10.1016/j.phrs.2016.06.001
[6]	CHAURASIA C S. In vivo microdialysis sampling: theory and applications[J]. Biomed Chromatogr,1999,13(5):317-332. doi: 10.1002/(SICI)1099-0801(199908)13:5<317::AID-BMC891>3.0.CO;2-I
[7]	田红玉, 聂飞, 周凝. 头孢拉定结晶工艺研究[J]. 煤炭与化工, 2019, 42(4):141-143.
[8]	唐晓萌. 基于两步释放的术连微丸口服结肠靶向胶囊的研制及体内外评价[D]. 上海: 海军军医大学, 2019.
[9]	王丹. 微透析液相色谱联用的构建及在经皮药动学研究的应用[D]. 上海: 第二军医大学, 2009.
[10]	UNGERSTEDT U, PYCOCK C. Functional correlates of dopamine neurotransmission[J]. Bull Schweiz Akad Med Wiss,1974,30(1-3):44-55.
[11]	LÖNNROTH P, JANSSON P A, SMITH U. A microdialysis method allowing characterization of intercellular water space in humans[J]. Am J Physiol,1987,253(2 Pt 1):E228-E231.
[12]	MÜLLER M. Science, medicine, and the future: microdialysis[J]. BMJ,2002,324(7337):588-591. doi: 10.1136/bmj.324.7337.588
[13]	MÜLLER M. Monitoring tissue drug levels by clinical microdialysis[J]. Altern Lab Anim,2009,37(Suppl 1):57-59.
[14]	MULLER M. Microdialysis in clinical drug delivery studies[J]. Adv Drug Deliv Rev,2000,45(2-3):255-269. doi: 10.1016/S0169-409X(00)00113-7
[15]	STAHL M, BOUW R, JACKSON A, et al. Human microdialysis[J]. Curr Pharm Biotechnol,2002,3(2):165-178. doi: 10.2174/1389201023378373
[16]	SCHMIDT S, BANKS R, KUMAR V, et al. Clinical microdialysis in skin and soft tissues: an update[J]. J Clin Pharmacol,2008,48(3):351-364. doi: 10.1177/0091270007312152
[17]	HÖCHT C, OPEZZO J A, BRAMUGLIA G F, et al. Application of microdialysis in clinical pharmacology[J]. Curr Clin Pharmacol,2006,1(2):163-183. doi: 10.2174/157488406776872587
[18]	FULMER B R, TURNER T T. A blood-prostate barrier restricts cell and molecular movement across the rat ventral prostate epithelium[J]. J Urol,2000,163(5):1591-1594. doi: 10.1016/S0022-5347(05)67685-9
[19]	LIU Y L, YI S H, ZHANG J L, et al. Effect of microbubble-enhanced ultrasound on prostate permeability: a potential therapeutic method for prostate disease[J]. Urology,2013,81(4):921.e1-921.e7.
[20]	SHANG Y, CUI D, YI S. Opening tight junctions may be key to opening the blood-prostate barrier[J]. Med Sci Monit,2014,20:2504-2507. doi: 10.12659/MSM.890902
[21]	PERLETTI G, WAGENLEHNER F M, NABER K G, et al. Enhanced distribution of fourth-generation fluoroquinolones in prostatic tissue[J]. Int J Antimicrob Agents,2009,33(3):206-210. doi: 10.1016/j.ijantimicag.2008.09.009
[22]	LEIBOVITZ A, BAUMOEHL Y, SEGAL R. Increased incidence of pathological and clinical prostate cancer with age: age related alterations of local immune surveillance[J]. J Urol,2004,172(2):435-437. doi: 10.1097/01.ju.0000131908.19114.d3
[23]	LIU Y L, LIU Z, LI T, et al. Ultrasonic sonoporation can enhance the prostate permeability[J]. Med Hypotheses,2010,74(3):449-451. doi: 10.1016/j.mehy.2009.09.052
[24]	唐红艳. 基于微透析技术研究雪上一枝蒿不同制剂经皮药动学[D]. 贵阳: 贵阳中医学院, 2017.

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沈阳化工大学材料科学与工程学院沈阳 110142

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微透析（microdialysis，MD）在体取样新技术^[1-4]逐渐成为药动学研究中一种日趋成熟和实用的方法。由于其探针开发的多样性和微型化，定位更加准确，并利用极微量（一般若干微升）的透析装置实现在体、实时、在线取样和监测。能在微创条件下满足定量、定性、定位、连续动态取样分析等要求，且不破坏生物体内环境对靶器官或组织内的内源性和外源性物质进行取样^[5-6]，在采用微透析技术进行体内采样测定前，必须先在体外进行微透析探针增量、减量两种方法的回收率测定，以摸索出适合体内测定时的条件，以确保将微透析样品测得的浓度准确地折算为采样部位的组织浓度。

头孢拉定（cephradine）又称先锋霉素Ⅵ、头孢菌素Ⅵ等，其结构式见图1，是临床常用的第一代头孢菌素。头孢拉定耐酸，可以口服、吸收好、血药浓度较高，特点是耐β内酰胺酶，对耐药性金黄色葡萄球菌及其他多种对广谱抗生素耐药的杆菌等有迅速而可靠的杀菌作用，主要以原形经尿排泄，尿中浓度较高。临床主要用于呼吸道、泌尿道、皮肤和软组织等的感染，如支气管炎、肺炎、肾盂肾炎、膀胱炎、耳鼻咽喉感染、肠炎及痢疾等，也常用于预防外科术后感染^[7]。本研究使用微透析技术与液质（LC-MS/MS）这一灵敏度高、检测速度快、前处理方便的分析方法相结合，测定头孢拉定微透析体外回收率，并考察回收率的影响因素，为进一步研究头孢拉定在前列腺组织、血液双位点的药动学提供可靠依据。

1. 实验材料

1.1. 仪器

G-6410型高效液相色谱质谱联用仪（美国安捷伦科技有限公司）；DL-180A型超声波清洗器（上海之信仪器有限公司）；AG285型电子分析天平（Mettler Toledo仪器上海有限公司）；微透析系统包括四通道微量注射泵，双通道微量收集器（瑞典CMA公司）；微透析同心圆探针（瑞典CMA公司，CMA 20Elite，膜长10 mm）。

1.2. 药品与试剂

乙腈为色谱纯（美国Tedia公司）；头孢拉定对照品（中国食品药品检定研究院，纯度88.4%）；林格溶液（辰欣药业股份有限公司）；水为三蒸水（海军军医大学附属长海医院制剂室）；其他试剂均为分析纯。

3. 讨论

MD最初可追溯到20世纪60年代，当时不同类型的在体取样技术首次用于测定药物、介质、神经递质和代谢组织浓度^[10-11]，其原理是利用物质的扩散性和半透膜的选择透过性，探针头部半透膜位于组织内，且导管内液体与细胞内液体保持平衡，类似一个封闭的无孔毛细血管。这是一项为处在具有明显界限隔室里的游离型药物提供连续信息的微创技术。例如，成为测量细胞内和细胞外靶区浓度的标准工具。许多综述文章^[12-17]已经证实MD是临床前和临床药学研发的有效工具。MD用于本研究的原理是基于血液-组织屏障的存在，屏障存在对血液浓度的依赖可能误导靶区浓度及药效学。在多年不断的研究中，人们发现血-前列腺屏障（BPB）的存在是影响前列腺炎药物治疗不可忽视的重要因素^[18-20]。受采样和测定技术的限制，截止目前尚未明确BPB的具体部位和物质基础，故而很难研究其药物分布的特点和屏障作用的机制^[21-23]。而MD有望解决前列腺组织特殊的部位和大小对技术上的高要求。有利于后期动物前列腺实验的开展。

微透析探针的回收率分为体内和体外，校正方法也有体内和体外之分。而体内校正应用反透析法即减量法的前提是探针的回收率与传递率近似相等，所以需要进行体外增、减量法的回收率试验。本实验结果可看出，体外回收率与流速成反比，与探针周围液体浓度无关，结果与多数报道相符^{[9, 24]}，由于待测部位的药物浓度是动态变化的，说明微透析技术可以用于体内药物浓度的测定。MD样品体积也与灌流速度成正比，在相同时间内流速越高体积越大，但是探针回收率也有所降低，这就要求分析方法检测限更低；而流速越低，透析液浓度越接近组织浓度，但为了收集足量样品体积用于检测，同时考虑时间分辨率问题须选择合适流速。此外，增、减量法所得到头孢拉定体外回收率结果相近，说明减量法即反透析法可以用于头孢拉定的体内回收率实验，并以此为体内药动学实验提供参考。

Reference (24)

[1]	NANDI P, LUNTE S M. Recent trends in microdialysis sampling integrated with conventional and microanalytical systems for monitoring biological events: a review[J]. Anal Chim Acta,2009,651(1):1-14.
[2]	HURTADO F K, WEBER B, DERENDORF H, et al. Population pharmacokinetic modeling of the unbound levofloxacin concentrations in rat plasma and prostate tissue measured by microdialysis[J]. Antimicrob Agents Chemother,2014,58(2):678-686.
[3]	K HURTADO F, LAUREANO J V, DE A LOCK G, et al. Enhanced penetration of moxifloxacin into rat prostate tissue evidenced by microdialysis[J]. Int J Antimicrob Agents,2014,44(4):327-333.
[4]	李奕, 周佳, 王卓, 等. 用微透析法研究肺炎大鼠灌胃左氧氟沙星的肺部药动学[J]. 药学服务与研究, 2013, 13(5):365-368.
[5]	MARCHAND S, CHAUZY A, DAHYOT-FIZELIER C, et al. Microdialysis as a way to measure antibiotics concentration in tissues[J]. Pharmacol Res,2016,111:201-207.
[6]	CHAURASIA C S. In vivo microdialysis sampling: theory and applications[J]. Biomed Chromatogr,1999,13(5):317-332.
[7]	田红玉, 聂飞, 周凝. 头孢拉定结晶工艺研究[J]. 煤炭与化工, 2019, 42(4):141-143.
[8]	唐晓萌. 基于两步释放的术连微丸口服结肠靶向胶囊的研制及体内外评价[D]. 上海: 海军军医大学, 2019.
[9]	王丹. 微透析液相色谱联用的构建及在经皮药动学研究的应用[D]. 上海: 第二军医大学, 2009.
[10]	UNGERSTEDT U, PYCOCK C. Functional correlates of dopamine neurotransmission[J]. Bull Schweiz Akad Med Wiss,1974,30(1-3):44-55.
[11]	LÖNNROTH P, JANSSON P A, SMITH U. A microdialysis method allowing characterization of intercellular water space in humans[J]. Am J Physiol,1987,253(2 Pt 1):E228-E231.
[12]	MÜLLER M. Science, medicine, and the future: microdialysis[J]. BMJ,2002,324(7337):588-591.
[13]	MÜLLER M. Monitoring tissue drug levels by clinical microdialysis[J]. Altern Lab Anim,2009,37(Suppl 1):57-59.
[14]	MULLER M. Microdialysis in clinical drug delivery studies[J]. Adv Drug Deliv Rev,2000,45(2-3):255-269.
[15]	STAHL M, BOUW R, JACKSON A, et al. Human microdialysis[J]. Curr Pharm Biotechnol,2002,3(2):165-178.
[16]	SCHMIDT S, BANKS R, KUMAR V, et al. Clinical microdialysis in skin and soft tissues: an update[J]. J Clin Pharmacol,2008,48(3):351-364.
[17]	HÖCHT C, OPEZZO J A, BRAMUGLIA G F, et al. Application of microdialysis in clinical pharmacology[J]. Curr Clin Pharmacol,2006,1(2):163-183.
[18]	FULMER B R, TURNER T T. A blood-prostate barrier restricts cell and molecular movement across the rat ventral prostate epithelium[J]. J Urol,2000,163(5):1591-1594.
[19]	LIU Y L, YI S H, ZHANG J L, et al. Effect of microbubble-enhanced ultrasound on prostate permeability: a potential therapeutic method for prostate disease[J]. Urology,2013,81(4):921.e1-921.e7.
[20]	SHANG Y, CUI D, YI S. Opening tight junctions may be key to opening the blood-prostate barrier[J]. Med Sci Monit,2014,20:2504-2507.
[21]	PERLETTI G, WAGENLEHNER F M, NABER K G, et al. Enhanced distribution of fourth-generation fluoroquinolones in prostatic tissue[J]. Int J Antimicrob Agents,2009,33(3):206-210.
[22]	LEIBOVITZ A, BAUMOEHL Y, SEGAL R. Increased incidence of pathological and clinical prostate cancer with age: age related alterations of local immune surveillance[J]. J Urol,2004,172(2):435-437.
[23]	LIU Y L, LIU Z, LI T, et al. Ultrasonic sonoporation can enhance the prostate permeability[J]. Med Hypotheses,2010,74(3):449-451.
[24]	唐红艳. 基于微透析技术研究雪上一枝蒿不同制剂经皮药动学[D]. 贵阳: 贵阳中医学院, 2017.

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标准浓度（ng/ml）	日内			日间
标准浓度（ng/ml）	检测浓度（ng/ml）	精密度（%）	准确度（%）	检测浓度（ng/ml）	精密度（%）	准确度（%）
25	24.60±0.84	3.40	98.39	25.49±1.63	6.39	101.94
500	494.87±3.67	0.80	98.97	493.23±4.49	0.91	98.65
10 000	10 269.52±82.90	0.74	102.69	10 325.06±190.40	1.84	103.25

标准浓度（ng/ml）	检测浓度（%）
标准浓度（ng/ml）	室温（25 ℃）	低温（4 ℃）
低浓度（100）	101.64±4.24	103.73±6.30
高浓度（10 000）	104.29±2.51	103.79±1.73

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