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Lakeev AP, Yanovskaya EA, Yanovsky VA, Frelikh GA, Andropov MO. Novel aspects of taxifolin pharmacokinetics: Dose proportionality, cumulative effect, metabolism, microemulsion dosage forms. J Pharm Biomed Anal 2023; 236:115744. [PMID: 37797493 DOI: 10.1016/j.jpba.2023.115744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/11/2023] [Accepted: 09/20/2023] [Indexed: 10/07/2023]
Abstract
Taxifolin (TFL) is a small drug molecule with a broad therapeutic potential limited by its poor aqueous solubility and excessive metabolism. Despite comprehensive research, some aspects of the TFL pharmacokinetics, e.g., dose proportionality and possible cumulative effect, remain unexplored. In the current study, we have tried to fill this gap. Our results revealed that the TFL pharmacokinetics in rats had nonlinear character in the dose range of 10-50 mg/kg after its single oral administration (AUC). For Cmax, the data are ambiguous: linearity was confirmed via the equivalence criterion and was disproved using the power model approach. Also, the cumulative drug effect was observed on the 4th day after its multiple-dose oral administration (25 mg/kg; compared to the 1st day). Interestingly, biologically active TFL metabolites such as aromadendrin and luteolin were putatively found in plasma samples, although they were previously detected only in feces. In addition, oil-in-water and water-in-oil microemulsions were fabricated to design novel drug delivery systems. These carrier dosage forms did not improve the TFL bioavailability but significantly affected its metabolism. To support pharmacokinetic studies, the bioanalytical liquid chromatography-tandem mass spectrometry method was developed and validated in the concentration range of 1-1000 ng/mL using candesartan as an internal standard. Liquid-liquid extraction with methyl tert-butyl ether was used to isolate the analytes from plasma followed by evaporation and reconstitution of the residues in acetonitrile. Thus, the present findings broaden our understanding of the TFL behavior in vivo and provide novel ideas and reference directions for its continued use in medical practice.
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Affiliation(s)
- Alexander P Lakeev
- Scientific and Educational Center 'Perspective Materials and Technologies in Subsoil Use', Faculty of Chemistry, National Research Tomsk State University, 36, Lenin Ave., Tomsk 634050, Russia; Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Russian Academy of Sciences, 3, Lenin Ave., Tomsk 634028, Russia.
| | - Elena A Yanovskaya
- Scientific and Educational Center 'Perspective Materials and Technologies in Subsoil Use', Faculty of Chemistry, National Research Tomsk State University, 36, Lenin Ave., Tomsk 634050, Russia; Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Russian Academy of Sciences, 3, Lenin Ave., Tomsk 634028, Russia.
| | - Vyacheslav A Yanovsky
- Scientific and Educational Center 'Perspective Materials and Technologies in Subsoil Use', Faculty of Chemistry, National Research Tomsk State University, 36, Lenin Ave., Tomsk 634050, Russia
| | - Galina A Frelikh
- Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Russian Academy of Sciences, 3, Lenin Ave., Tomsk 634028, Russia
| | - Mikhail O Andropov
- Scientific and Educational Center 'Perspective Materials and Technologies in Subsoil Use', Faculty of Chemistry, National Research Tomsk State University, 36, Lenin Ave., Tomsk 634050, Russia
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Lee JH, Lee DY, Kang KK, Jeong EJ, Staatz CE, Baek IH. Gender differences and dose proportionality in the toxicokinetics of udenafil and its active metabolite following oral administration in rodents. Toxicol Appl Pharmacol 2020; 410:115339. [PMID: 33221319 DOI: 10.1016/j.taap.2020.115339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 10/23/2022]
Abstract
Udenafil is a long-acting oral phosphodiesterase type 5 inhibitor used to treat erectile dysfunction which may also have beneficial effects on cardiovascular diseases. Udenafil is mainly biotransformed to the active metabolite N-dealkylated udenafil via cytochrome P450 3A. The aim of this study was to investigate the gender differences and dose proportionality of the toxicokinetics of udenafil and its metabolite N-dealkylated udenafil in rodents. Udenafil was administered orally by gavage to male and female B6C3F1/N mice (100, 240, 350, and 500 mg/kg) and F344 rats (60, 120, and 240 mg/kg). Plasma concentrations of udenafil and N-dealkylated udenafil were simultaneous measured via liquid chromatography-tandem mass spectrometry. Female mice showed higher systemic exposure to udenafil than male mice, whereas female rats showed lower systemic exposure to udenafil than male rats after repeated administration at high dose. Systemic exposure to the metabolite, N-dealkylated udenafil, was lower in female than male mice and rats. A dose proportionality assessment by power model revealed a lack of dose proportionality in systemic exposure (Cmax, AUC24h and AUCinf) after administration of 100-500 mg/kg of udenafil in mice and 60-240 mg/kg in rats. This study thus demonstrates gender and species differences with regard to the toxicokinetic profiles of udenafil and its active metabolite N-dealkylated udenafil after oral administration of udenafil to mice and rats of both sexes. Our findings suggest the possibility of gender differences in the toxicokinetics of udenafil in humans and suggests that further study is needed in this cohort.
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Affiliation(s)
- Jong-Hwa Lee
- Bioanalysis and Pharmacokinetic Study Group, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Dae Young Lee
- Dong-A Socio R&D Center, 21, Geumhwa-Ro, 105beon-Gil, Giheung-Gu, Yongin-Si, Gyeonggi-Do 17073, Republic of Korea
| | - Kyung Koo Kang
- Dong-A Socio R&D Center, 21, Geumhwa-Ro, 105beon-Gil, Giheung-Gu, Yongin-Si, Gyeonggi-Do 17073, Republic of Korea
| | - Eun Ju Jeong
- Chemical Risk Assessment Research Committee, Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Christine E Staatz
- School of Pharmacy, The University of Queensland, Pharmacy Australia Centre of Excellence, 20 Cornwall St, Woolloongabba, Brisbane, QLD 4102, Australia
| | - In-Hwan Baek
- College of Pharmacy, Kyungsung University, 309, Suyeong-ro, Nam-gu, Busan 48434, Republic of Korea.
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Kim S, Hwang KM, Park YS, Nguyen TT, Park ES. Preparation and evaluation of non-effervescent gastroretentive tablets containing pregabalin for once-daily administration and dose proportional pharmacokinetics. Int J Pharm 2018; 550:160-169. [PMID: 30138708 DOI: 10.1016/j.ijpharm.2018.08.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/27/2018] [Accepted: 08/19/2018] [Indexed: 01/29/2023]
Abstract
The main purpose of this study was to develop gastroretentive tablets with floating and swelling properties for once-daily administration of pregabalin. The non-effervescent floating and swelling tablets were prepared using wet granulation and compaction, which are widely used and easily accessible. All formulations showed sustained release patterns and maintained buoyancy for over 24 h. The amount of hydroxypropyl methylcellulose and crospovidone were found to be critical factors affecting in vitro dissolution and floating properties of the prepared tablets. The optimized tablets containing 300 mg of pregabalin started to float within 3 min and swelled above 12.8 mm, the reported pyloric sphincter diameter during the fed state, in all dimensions including length, width, and thickness. In vivo results in beagle dogs indicated that the optimized formulations are suitable as once-daily dosage forms, and dose proportionality was observed in doses ranging from 75 to 300 mg. Additionally, the dogs administered with the formulation having poor in vitro gastroretentive properties showed highly variable and reduced extent of absorption, signifying the necessity of the gastroretentive drug delivery system. In conclusion, the developed non-effervescent floating tablets are promising candidates for once-daily delivery of pregabalin.
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Affiliation(s)
- Seongkyu Kim
- Yuhan Research Institute, Yuhan Corporation, Yongin 17084, Republic of Korea; School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yoong Sik Park
- Yuhan Research Institute, Yuhan Corporation, Yongin 17084, Republic of Korea
| | - Thi-Tram Nguyen
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Huang LH, Xiong XH, Zhong YM, Cen MF, Cheng XG, Wang GX, Zang LQ, Wang SJ. Pharmacokinetics of isochlorgenic acid C in rats by HPLC-MS: Absolute bioavailability and dose proportionality. J Ethnopharmacol 2016; 185:105-109. [PMID: 26972507 DOI: 10.1016/j.jep.2016.03.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 02/22/2016] [Accepted: 03/10/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Isochlorgenic acid C (IAC), one of the bioactive compounds of Lonicera japonica, exhibited diverse pharmacological effects. However, its pharmacokinetic properties and bioavailability remained unresolved. AIM OF THE STUDY To determine the absolute bioavailability in rats and the dose proportionality on the pharmacokinetics of single oral dose of IAC. MATERIALS AND METHODS A validated HPLC-MS method was developed for the determination of IAC in rat plasma. Plasma concentration versus time data were generated following oral and intravenous dosing. The pharmacokinetic analysis was performed using DAS 3.0 software analysis. Absolute bioavailability in rats was determined by comparing pharmacokinetic data after administration of single oral (5, 10 and 25mgkg(-1)) and intravenous (5mgkg(-1)) doses of IAC. The dose proportionality of AUC(0-∞) and Cmax were analyzed by linear regression. RESULTS Experimental data showed that absolute oral bioavailability of IAC in rats across the doses ranged between 14.4% and 16.9%. The regression analysis of AUC(0-∞) and Cmax at the three doses (5, 10 and 25mgkg(-1)) indicated that the equations were y=35.23x+117.20 (r=0.998) and y=121.03x+255.74 (r=0.995), respectively. CONCLUSIONS A new HPLC-MS method was developed to determine the bioavailability and the dose proportionality of IAC. Bioavailability of IAC in rats was poor and both Cmax and AUC(0-∞) of IAC had a positive correlation with dose. Evaluation of the pharmacokinetics of IAC will be useful in assessing concentration-effect relationships for the potential therapeutic applications of IAC.
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Affiliation(s)
- Li Hua Huang
- Department of pharmacology, School of pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Xiao Hong Xiong
- Department of pharmacology, School of pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Yun Ming Zhong
- Department of pharmacology, School of pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Mei Feng Cen
- Department of pharmacology, School of pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Xuan Ge Cheng
- Department of pharmacology, School of pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Gui Xiang Wang
- Department of pharmacology, School of pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Lin Quan Zang
- Department of pharmacology, School of pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Su Jun Wang
- Department of pharmacology, School of pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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Li C, Song X, Song J, Pang X, Wang Z, Zhao Y, Lian W, Liu A, Du G. Pharmacokinetic study of gallocatechin-7-gallate from Pithecellobium clypearia Benth. in rats. Acta Pharm Sin B 2016; 6:64-70. [PMID: 26904400 PMCID: PMC4724690 DOI: 10.1016/j.apsb.2015.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 09/02/2015] [Accepted: 10/10/2015] [Indexed: 11/15/2022] Open
Abstract
The pharmacokinetic profile of gallocatechin-7-gallate (J10688) was studied in rats after intravenous administration. Male and female Sprague-Dawley (SD) rats received 1, 3, and 10 mg/kg (i.v.) of J10688 and plasma drug concentrations were determined by a high performance liquid chromatography-mass spectrometry (LC–MS) method. The pharmacokinetic software Data Analysis System (Version 3.0) was used to calculate the pharmacokinetic parameters. For different i.v. doses of J10688, the mean peak plasma concentration (C0) values ranged from 11.26 to 50.82 mg/L, and mean area under the concentration-time curve (AUC0–t) values ranged from 1.75 to 11.80 (mg·h/L). J10688 lacked dose-dependent pharmacokinetic properties within doses between 1 and 10 mg/kg, based on the power model. The method developed in this study was sensitive, precise, and stable. The pharmacokinetic properties of J10688 in SD rats were shown to have rapid distribution and clearance values. These pharmacokinetic results may contribute to an improved understanding of the pharmacological actions of J10688.
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Affiliation(s)
- Chao Li
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xiaowei Song
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Junke Song
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xiaocong Pang
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zhe Wang
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ying Zhao
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Wenwen Lian
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ailin Liu
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- Beijing Key Laboratory of Drug Target and Screening Research, Beijing 100050, China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Beijing 100050, China
- Corresponding authors at: Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China. Tel./fax: +86 10 63165184.Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100050China
| | - Guanhua Du
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- Beijing Key Laboratory of Drug Target and Screening Research, Beijing 100050, China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Beijing 100050, China
- Corresponding authors at: Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China. Tel./fax: +86 10 63165184.Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100050China
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Song J, Zhang W, Sun J, Xu X, Zhang X, Zhang L, Feng Z, Du GH. Pharmacokinetic study of salvianolic acid D after oral and intravenous administration in rats. Acta Pharm Sin B 2015; 5:246-53. [PMID: 26579453 PMCID: PMC4629266 DOI: 10.1016/j.apsb.2015.03.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 02/02/2015] [Accepted: 02/26/2015] [Indexed: 11/09/2022] Open
Abstract
A sensitive, specific and rapid LC-MS method was developed and validated for the determination of salvianolic acid D (SalD) in rat plasma. This method used a single quadrupole mass spectrometer with an electrospray ionization (ESI) source. A single ion monitoring scanning (SIM) mode was employed. It showed good linearity over the concentration range from 3.3 to 666.7 ng/mL for the determination of SalD. The R.S.D.% of intra-day and inter-day precision values were no more than 7.69%, and the accuracy was within 91%−104% at all quality control levels. This LC-MS method was applied to the pharmacokinetic study of SalD in rats. A two-compartmental model analysis was employed. The plasma concentrations at 2 min (C2min) were 5756.06±719.61, 11,073.01±1783.46 and 21,077.58±5581.97 μg/L for 0.25, 0.5 and 1 mg/kg intravenous injection, respectively. The peak plasma concentration (Cmax) was 333.08±61.21 μg/L for 4 mg/kg oral administration. The area under curve (AUC0−t) was 14,384.379±8443.184, 22,813.369±11,860.823, 46,406.122±27,592.645 and 8201.740±4711.961 μg/L·h for intravenous injection (0.25, 0.5 and 1 mg/kg) and oral administration (4 mg/kg), respectively. The bioavailability of SalD was calculated to be 4.159%±0.517%.
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Key Words
- AUC, the area under curve
- Analysis method
- Bioavailability
- CI, confidence interval
- CL, clearance
- Cmax, peak plasma concentration
- Danshen
- Dose proportionality
- ECE-1, endothelin converting enzyme 1
- ESI, electrospray ionization
- IS, internal standard
- LC-MS
- LLOQ, lower limit of quantification
- Pharmacokinetics
- QC, quality control
- R.E., relative error
- R.S.D., relative standard deviation
- SIM, single ion monitoring
- SalB, salvianolic acid B
- SalD, salvianolic acid D
- Salvia miltiorrhiza
- Salvianolic acid D
- TCM, traditional Chinese medicine
- ULOQ, upper limit of quantification
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Alvarez L, Suarez G, Ceballos L, Moreno L, Canton C, Lifschitz A, Maté L, Ballent M, Virkel G, Lanusse C. Integrated assessment of ivermectin pharmacokinetics, efficacy against resistant Haemonchus contortus and P-glycoprotein expression in lambs treated at three different dosage levels. Vet Parasitol 2015; 210:53-63. [PMID: 25841863 DOI: 10.1016/j.vetpar.2015.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 03/02/2015] [Accepted: 03/04/2015] [Indexed: 10/23/2022]
Abstract
The main goals of the current work were: (a) to assess the ivermectin (IVM) systemic exposure and plasma disposition kinetics after its administration at the recommended dose, x5 and x10 doses to lambs, (b) to compare the clinical efficacy of the same IVM dosages in lambs infected with an IVM-resistant isolate of Haemonchus contortus, and (c) to assess the expression of the transporter protein P-glycoprotein (P-gp) in H. contortus recovered at 14 days after administration of the IVM dose regimens. There were two separated trials where IVM was administered either subcutaneously (SC, Experiment I) or intraruminally (IR, Experiment II). Each experiment involved twenty-four (24) lambs artificially infected with a highly resistant H. contortus isolate. Animals were allocated into 4 groups (n=6) and treated with IVM at either 0.2 (IVM x1), 1 (IVM x5) or 2mg/kg (IVM x10). Plasma samples were collected up to 12 days post-treatment and analysed by HPLC. An untreated-control Group was included to assess the comparative anthelmintic efficacy of the different treatments. The level of expression of Pgp in H. contortus specimens obtained from lambs both untreated and IR treated with the different IVM doses was quantified by real time PCR. Parametric and non-parametric tests were used to compare the statistical significance of the results (P<0.05). After the SC treatment, the IVM plasma area under the concentration-time curve (AUC0-LOQ) increased from 41.9 (IVM SCx1) up to 221 (IVM SCx5) and 287 (IVM SCx10)ng.day/mL and after the IR treatment from 20.8 (IVM IRx1) up to 121 (IVM IRx5) and 323 (IVM IRx10)ng.day/mL. Dose-adjusted AUC0-LOQ and Cmax were similar among doses, demonstrating dose proportionality for IVM after both SC and IR administration at the three different doses. The efficacies against resistant H. contortus after the SC treatment were 42% (IVM SC1), 75% (IVM SCx5) and 75% (IVM SCx10). However, the IR IVM treatment reached clinical efficacies ranging from 48% (IVM IRx1) up to 96% (IVM IRx5) and 98% (IVM IRx10). None of the IR IVM treatments increased the expression of P-gp in adult H. contortus at 14 days post-treatment compared to samples collected from the untreated control group. An enhanced parasite exposure of the drug at the abomasum may explain the improved efficacy against this recalcitrant H. contortus isolate observed only after the IR administration at 5- and 10-fold the IVM therapeutic dosage.
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Affiliation(s)
- Luis Alvarez
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Campus Universitario, 7000 Tandil, Argentina.
| | - Gonzalo Suarez
- Área Farmacología, Facultad Veterinaria, Universidad de la República (UDELAR), Montevideo, Uruguay
| | - Laura Ceballos
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Campus Universitario, 7000 Tandil, Argentina
| | - Laura Moreno
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Campus Universitario, 7000 Tandil, Argentina
| | - Candela Canton
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Campus Universitario, 7000 Tandil, Argentina
| | - Adrián Lifschitz
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Campus Universitario, 7000 Tandil, Argentina
| | - Laura Maté
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Campus Universitario, 7000 Tandil, Argentina
| | - Mariana Ballent
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Campus Universitario, 7000 Tandil, Argentina
| | - Guillermo Virkel
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Campus Universitario, 7000 Tandil, Argentina
| | - Carlos Lanusse
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Campus Universitario, 7000 Tandil, Argentina
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Lin HS, Ho PC. Preclinical pharmacokinetic evaluation of resveratrol trimethyl ether in sprague-dawley rats: the impacts of aqueous solubility, dose escalation, food and repeated dosing on oral bioavailability. J Pharm Sci 2011; 100:4491-500. [PMID: 21520090 DOI: 10.1002/jps.22588] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 04/02/2011] [Accepted: 04/06/2011] [Indexed: 12/16/2022]
Abstract
Resveratrol trimethyl ether (trans-3,5,4'-trimethoxystilbene, RTE) is a naturally occurring and pharmacologically active resveratrol derivative. To evaluate its suitability as a drug candidate, a pharmacokinetic study was carried out in Sprague-Dawley rats with the emphasis to identify the impact of aqueous solubility, dose escalation, food, and repeated dosing on its oral bioavailability. Upon single intravenous administration (5 mg/kg), RTE displayed moderate clearance (35.5 ± 5.3 mL/min/kg) and a fairly long terminal elimination half-life (511 ± 136 min); dose escalation (5-20 mg/kg) did not cause nonlinear pharmacokinetics. When given orally in suspension (60 mg/kg), RTE was poorly absorbed with negligible bioavailability (< 1.5%), fasting further decreased its bioavailability (<1%). However, when administered in a solution formulated with randomly methylated-β-cyclodextrin (15 mg/kg), RTE was rapidly absorbed with good bioavailability (46.5 ± 4.8%). Dose escalation resulted in increased bioavailability (64.6 ± 8.0%) at the dose of 60 mg/kg. Repeated RTE dosing (7 daily oral doses) did not alter the clearance, terminal elimination half-life and bioavailability. In summary, the aqueous solubility of RTE was a barrier to oral absorption; repeated RTE administrations did not alter its pharmacokinetic profiles; as RTE possessed appropriate pharmacokinetic profiles, further investigation on RTE as a drug candidate is warranted.
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Affiliation(s)
- Hai-Shu Lin
- Department of Pharmacy, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260.
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