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Progress to Improve Oral Bioavailability and Beneficial Effects of Resveratrol. Int J Mol Sci 2019; 20:ijms20061381. [PMID: 30893846 PMCID: PMC6471659 DOI: 10.3390/ijms20061381] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/08/2019] [Accepted: 03/13/2019] [Indexed: 12/12/2022] Open
Abstract
Resveratrol (3,5,4'-trihydroxystilbene; RSV) is a natural nonflavonoid polyphenol present in many species of plants, particularly in grapes, blueberries, and peanuts. Several in vitro and in vivo studies have shown that in addition to antioxidant, anti-inflammatory, cardioprotective and neuroprotective actions, it exhibits antitumor properties. In mammalian models, RSV is extensively metabolized and rapidly eliminated and therefore it shows a poor bioavailability, in spite it of its lipophilic nature. During the past decade, in order to improve RSV low aqueous solubility, absorption, membrane transport, and its poor bioavailability, various methodological approaches and different synthetic derivatives have been developed. In this review, we will describe the strategies used to improve pharmacokinetic characteristics and then beneficial effects of RSV. These methodological approaches include RSV nanoencapsulation in lipid nanocarriers or liposomes, nanoemulsions, micelles, insertion into polymeric particles, solid dispersions, and nanocrystals. Moreover, the biological results obtained on several synthetic derivatives containing different substituents, such as methoxylic, hydroxylic groups, or halogens on the RSV aromatic rings, will be described. Results reported in the literature are encouraging but require additional in vivo studies, to support clinical applications.
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Peng RM, Lin GR, Ting Y, Hu JY. Oral delivery system enhanced the bioavailability of stilbenes: Resveratrol and pterostilbene. Biofactors 2018; 44:5-15. [PMID: 29322567 DOI: 10.1002/biof.1405] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 11/01/2017] [Accepted: 11/10/2017] [Indexed: 12/17/2022]
Abstract
Stilbenes are a large group of compounds with the C6 C2 C6 skeleton, in which two aromatic rings are connected by an ethylene bridge. Resveratrol and its structural analog, pterostilbene, are by far the two most widely researched stilbenes in terms of their beneficial bioactivities. However, the bioefficacy of these compounds is greatly reduced when consumed orally due to their poor aqueous solubility, which leads to poor bioavailability. To overcome the limitation, strategies improving their solubility, absorption, and systemic concentration were applied when designing a suitable edible delivery system. This review will summarize the findings from the studies evaluating the oral bioavailability of stilbenes with emphasize on the resveratrol and pterostilbene. It will also include the edible delivery systems currently available and their effect on the oral bioavailability. © 2018 BioFactors, 44(1):5-15, 2018.
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Affiliation(s)
- Ru-Min Peng
- Graduate Institute of Food Science and Technology, National Taiwan University, Taipei City, Taiwan
| | - Guan-Ru Lin
- Graduate Institute of Food Science and Technology, National Taiwan University, Taipei City, Taiwan
| | - Yuwen Ting
- Graduate Institute of Food Science and Technology, National Taiwan University, Taipei City, Taiwan
| | - Jing-Yu Hu
- Graduate Institute of Food Science and Technology, National Taiwan University, Taipei City, Taiwan
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Therapeutic Versatility of Resveratrol Derivatives. Nutrients 2017; 9:nu9111188. [PMID: 29109374 PMCID: PMC5707660 DOI: 10.3390/nu9111188] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/26/2017] [Accepted: 10/25/2017] [Indexed: 12/13/2022] Open
Abstract
Resveratrol, a natural phytoalexin, exhibits a remarkable range of biological activities, such as anticancer, cardioprotective, neuroprotective and antioxidant properties. However, the therapeutic application of resveratrol was encumbered for its low bioavailability. Therefore, many researchers focused on designing and synthesizing the derivatives of resveratrol to enhance the bioavailability and the pharmacological activity of resveratrol. During the past decades, a large number of natural and synthetic resveratrol derivatives were extensively studied, and the methoxylated, hydroxylated and halogenated derivatives of resveratrol received particular more attention for their beneficial bioactivity. So, in this review, we will summarize the chemical structure and the therapeutic versatility of resveratrol derivatives, and thus provide the related structure activity relationship reference for their practical applications.
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Nguyen CB, Kotturi H, Waris G, Mohammed A, Chandrakesan P, May R, Sureban S, Weygant N, Qu D, Rao CV, Dhanasekaran DN, Bronze MS, Houchen CW, Ali N. (Z)-3,5,4'-Trimethoxystilbene Limits Hepatitis C and Cancer Pathophysiology by Blocking Microtubule Dynamics and Cell-Cycle Progression. Cancer Res 2016; 76:4887-96. [PMID: 27287718 DOI: 10.1158/0008-5472.can-15-2722] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 06/05/2016] [Indexed: 02/07/2023]
Abstract
Hepatocellular carcinoma (HCC) is the third most common cause of cancer-related deaths worldwide. Chronic hepatitis C virus (HCV) infection causes induction of several tumors/cancer stem cell (CSC) markers and is known to be a major risk factor for development of HCC. Therefore, drugs that simultaneously target viral replication and CSC properties are needed for a risk-free treatment of advanced stage liver diseases, including HCC. Here, we demonstrated that (Z)-3,5,4'-trimethoxystilbene (Z-TMS) exhibits potent antitumor and anti-HCV activities without exhibiting cytotoxicity to human hepatocytes in vitro or in mice livers. Diethylnitrosamine (DEN)/carbon tetrachloride (CCl4) extensively induced expression of DCLK1 (a CSC marker) in the livers of C57BL/6 mice following hepatic injury. Z-TMS exhibited hepatoprotective effects against DEN/CCl4-induced injury by reducing DCLK1 expression and improving histologic outcomes. The drug caused bundling of DCLK1 with microtubules and blocked cell-cycle progression at G2-M phase in hepatoma cells via downregulation of CDK1, induction of p21(cip1/waf1) expression, and inhibition of Akt (Ser(473)) phosphorylation. Z-TMS also inhibited proliferation of erlotinib-resistant lung adenocarcinoma cells (H1975) bearing the T790M EGFR mutation, most likely by promoting autophagy and nuclear fragmentation. In conclusion, Z-TMS appears to be a unique therapeutic agent targeting HCV and concurrently eliminating cells with neoplastic potential during chronic liver diseases, including HCC. It may also be a valuable drug for targeting drug-resistant carcinomas and cancers of the lungs, pancreas, colon, and intestine, in which DCLK1 is involved in tumorigenesis. Cancer Res; 76(16); 4887-96. ©2016 AACR.
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Affiliation(s)
- Charles B Nguyen
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Hari Kotturi
- Department of Biology, University of Central Oklahoma, Edmond, Oklahoma
| | - Gulam Waris
- Department of Microbiology and Immunology, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois
| | - Altaf Mohammed
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Center for Cancer Prevention and Drug Development, Hematology-Oncology Section, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Parthasarathy Chandrakesan
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Medicine, Section of Digestive Diseases and Nutrition, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Veterans Affairs Medical Center, Oklahoma City, Oklahoma
| | - Randal May
- Department of Medicine, Section of Digestive Diseases and Nutrition, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Veterans Affairs Medical Center, Oklahoma City, Oklahoma
| | - Sripathi Sureban
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Medicine, Section of Digestive Diseases and Nutrition, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Veterans Affairs Medical Center, Oklahoma City, Oklahoma
| | - Nathaniel Weygant
- Department of Medicine, Section of Digestive Diseases and Nutrition, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Dongfeng Qu
- Department of Medicine, Section of Digestive Diseases and Nutrition, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Veterans Affairs Medical Center, Oklahoma City, Oklahoma
| | - Chinthalapally V Rao
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Center for Cancer Prevention and Drug Development, Hematology-Oncology Section, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Danny N Dhanasekaran
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael S Bronze
- Department of Medicine, Section of Digestive Diseases and Nutrition, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Courtney W Houchen
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Medicine, Section of Digestive Diseases and Nutrition, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Veterans Affairs Medical Center, Oklahoma City, Oklahoma.
| | - Naushad Ali
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Medicine, Section of Digestive Diseases and Nutrition, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Department of Veterans Affairs Medical Center, Oklahoma City, Oklahoma.
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Chen W, Yeo SCM, Chuang XF, Lin HS. Determination of pinostilbene in rat plasma by LC–MS/MS: Application to a pharmacokinetic study. J Pharm Biomed Anal 2016; 120:316-21. [DOI: 10.1016/j.jpba.2015.12.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 12/23/2015] [Accepted: 12/24/2015] [Indexed: 10/22/2022]
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Scherzberg MC, Kiehl A, Zivkovic A, Stark H, Stein J, Fürst R, Steinhilber D, Ulrich-Rückert S. Structural modification of resveratrol leads to increased anti-tumor activity, but causes profound changes in the mode of action. Toxicol Appl Pharmacol 2015; 287:67-76. [PMID: 26044878 DOI: 10.1016/j.taap.2015.05.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 05/28/2015] [Accepted: 05/31/2015] [Indexed: 12/29/2022]
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Inhibition of neutrophil collagenase/MMP-8 and gelatinase B/MMP-9 and protection against endotoxin shock. J Immunol Res 2014; 2014:747426. [PMID: 25762310 PMCID: PMC4265539 DOI: 10.1155/2014/747426] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 11/03/2014] [Indexed: 11/27/2022] Open
Abstract
Endotoxin shock is a life-threatening disorder, associated with the rapid release of neutrophil enzymes, including neutrophil collagenase/matrix metalloproteinase-8 (MMP-8) and gelatinase B/matrix metalloproteinase-9 (MMP-9). After activation, these enzymes cleave extracellular matrix components and cytokines and thus may contribute to shock syndrome development. MMP inhibitors have been suggested as immunotherapy of endotoxin shock. However, little is known about the therapeutic time window of MMP inhibition. Here, a sublethal endotoxin shock mouse model was used to evaluate the effect of an MMP inhibiting peptide (P2) after intravenous or intraperitoneal injection and to study the time window between LPS and inhibitor injections. With the use of a specific ELISA the plasma P2 concentrations were monitored. Whereas we corroborated the treatment strategy of MMP targeting in endotoxin shock with a new inhibitor, we also demonstrated that the time window, within which effective MMP inhibition increased the survival rates, is rather limited.
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Ng SY, Cardullo N, Yeo SCM, Spatafora C, Tringali C, Ong PS, Lin HS. Quantification of the resveratrol analogs trans-2,3-dimethoxy-stilbene and trans-3,4-dimethoxystilbene in rat plasma: application to pre-clinical pharmacokinetic studies. Molecules 2014; 19:9577-90. [PMID: 25004068 PMCID: PMC6271088 DOI: 10.3390/molecules19079577] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 06/26/2014] [Accepted: 06/28/2014] [Indexed: 01/10/2023] Open
Abstract
trans-2,3-Dimethoxystilbene (2,3-DMS) and trans-3,4-dimethoxystilbene (3,4-DMS) are two synthetic resveratrol (trans-3,5,4'-trihydroxystilbene) analogs. In this study, a simple HPLC method was developed and validated to determine 2,3-DMS and 3,4-DMS in rat plasma. Chromatographic separation was obtained with a reversed-phase HPLC column through a 12.5-min gradient delivery of a mixture of acetonitrile and water at the flow rate of 1.5 mL/min at 50 °C. The lower limit of quantification was 10 ng/mL. After successful validation, the pharmacokinetic profiles of 2,3-DMS and 3,4-DMS were subsequently studied in Sprague-Dawley rats. Upon single intravenous administration (4 mg/kg), 2,3-DMS had a medium volume of distribution of the central compartment (Vc = 2.71 ± 0.51 L/kg), quite rapid clearance (Cl = 52.0 ± 7.0 mL/min/kg), moderate mean transit time (MTT0→last = 131.0 ± 4.5 min) but a fairly long terminal elimination half-life (t1/2λZ = 288.9 ± 92.9 min). Interestingly, 3,4-DMS displayed a pharmacokinetic profile apparently distinct from 2,3-DMS and it had more extensive distribution (Vc = 5.58 ± 1.73 L/kg), faster clearance (Cl = 143.4 ± 40.5 mL/min/kg) and shorter residence (MTT0→last = 61.4 ± 27.1 min). Following single oral administration (10 mg/kg), 2,3-DMS had low and erratic plasma exposure (Cmax = 37.5 ± 23.7 ng/mL) and poor oral bioavailability (2.22% ± 2.13%) while the oral bioavailability of 3,4-DMS was even poorer than 2,3-DMS. Clearly, the location of the methoxy groups had a significant impact on the pharmacokinetics of resveratrol analogs. This study provided useful information for the design of resveratrol derivatives in future study.
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Affiliation(s)
- Shermain Yali Ng
- Department of Pharmacy, Faculty of Science, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore.
| | - Nunzio Cardullo
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, I-95125 Catania, Italy.
| | - Samuel Chao Ming Yeo
- Department of Pharmacy, Faculty of Science, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore.
| | - Carmela Spatafora
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, I-95125 Catania, Italy.
| | - Corrado Tringali
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, I-95125 Catania, Italy.
| | - Pei-Shi Ong
- Department of Pharmacy, Faculty of Science, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore.
| | - Hai-Shu Lin
- Department of Pharmacy, Faculty of Science, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore.
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A rapid and sensitive liquid chromatography-tandem mass spectrometric method for determination of actinoside E in rat plasma and application to a pharmacokinetic study. Chin J Nat Med 2013; 11:427-32. [DOI: 10.1016/s1875-5364(13)60064-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Indexed: 11/17/2022]
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10
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Messiad H, Amira-Guebailia H, Houache O. Reversed phase High Performance Liquid Chromatography used for the physicochemical and thermodynamic characterization of piceatannol/β-cyclodextrin complex. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 926:21-7. [DOI: 10.1016/j.jchromb.2013.02.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 02/20/2013] [Accepted: 02/21/2013] [Indexed: 11/16/2022]
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11
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Lin HS, Sviripa VM, Watt DS, Liu C, Xiang TX, Anderson BD, Ong PS, Ho PC. Quantification of trans-2,6-difluoro-4'-N,N-dimethylaminostilbene in rat plasma: application to a pharmacokinetic study. J Pharm Biomed Anal 2012; 72:115-20. [PMID: 23146234 DOI: 10.1016/j.jpba.2012.09.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 09/16/2012] [Accepted: 09/26/2012] [Indexed: 11/24/2022]
Abstract
trans-2,6-Difluoro-4'-N,N-dimethylaminostilbene (DFS), a synthetic stilbene, displayed potent pre-clinical anti-cancer activities exceeding that observed for naturally occurring resveratrol. In this study, a simple and sensitive HPLC method was developed and validated to quantify DFS in rat plasma. The lower limit of quantification (LLOQ) was 5 ng/ml. The intra- and inter-day variation in terms of relative standard deviation (RSD) was all less than 10%. The bias rate ranged from -11.5% to 6.2% while the absolute recovery ranged from 94.1 ± 2.3 to 97.3 ± 4.4%. The pharmacokinetic profiles of DFS were examined in Sprague-Dawley rats after intravenous administration (2 mg/kg). DFS displayed moderate clearance (Cl=61.5 ± 17.7 ml/min/kg) and a relatively prolonged terminal elimination half-life (t(1/2 λz)) of 351 ± 180 min. Aqueous solubility played a crucial role in the oral absorption of DFS. When DFS was given as a suspension (6 mg/kg), the absolute oral bioavailability (F) was almost negligible. However, when DFS was given in a solution prepared with hydroxypropyl-β-cyclodextrin (6 mg/kg), the F was 12.4 ± 10.7%. Dose-escalation to 15 mg/kg resulted in much higher systemic exposure (F=40.2 ± 10.0%). As DFS is orally available after formulation with hydroxypropyl-β-cyclodextrin and pharmacologically active systemic concentrations could be achieved after a single oral dose, the use of DFS as a cancer chemopreventive/chemotherapeutic agent is possible.
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Affiliation(s)
- Hai-Shu Lin
- Department of Pharmacy, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore.
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Lin HS, Spatafora C, Tringali C, Ho PC. Determination of trans-2,4,3′,4′,5′-pentamethoxystilbene in rat plasma and its application to a pharmacokinetic study. J Pharm Biomed Anal 2012; 57:94-8. [DOI: 10.1016/j.jpba.2011.08.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 08/06/2011] [Accepted: 08/11/2011] [Indexed: 12/22/2022]
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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] [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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Lin HS, Zhang W, Go ML, Tringali C, Spatafora C, Ho PC. Quantification of trans-3,4,5,4'-Tetramethoxystilbene in rat plasma by HPLC: application to pharmacokinetic study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:1072-1077. [PMID: 21229986 DOI: 10.1021/jf1043019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A simple HPLC method was established to quantify trans-3,4,5,4'-tetramethoxystilbene (MR-4 or DMU-212) in rat plasma. Chromatographic separation was obtained with a reversed-phase HPLC column through an 11 min gradient delivery of a mixture of acetonitrile and water at a flow rate of 1.5 mL/min at 50 °C. The limit of quantification was 15 ng/mL. The intra- and interday precisions in terms of relative standard deviation were <9% at all concentrations. Similarly, the accuracy was good, and the bias rates ranged within ±7%. The pharmacokinetic profiles of MR-4 were subsequently assessed in rats using 2-hydroxypropyl-β-cyclodextrin as a dosing vehicle. Upon intravenous administration, MR-4 displayed moderate clearance (46.5 ± 7.6 mL/min/kg) and terminal elimination half-life (154 ± 80 min). However, the absolute oral bioavailability of MR-4 was low (6.31 ± 3.30%). Future investigation on MR-4 as a chemotherapeutic agent should be focused on colorectal cancers.
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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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