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Abdallah M, Styles IK, Quinn JF, Whittaker MR, Trevaskis NL. Thoracic lymph collection impacts the level of endogenous macromolecules in rat biological fluids. Int J Pharm 2025; 677:125633. [PMID: 40294770 DOI: 10.1016/j.ijpharm.2025.125633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2025] [Revised: 04/14/2025] [Accepted: 04/21/2025] [Indexed: 04/30/2025]
Abstract
Lymph collection via insertion of a cannula into a lymphatic vessel is the most commonly used procedure to quantify the transport of pharmaceutical agents into lymph following administration to rodents. Further, lymph is derived from interstitial fluid draining specific organs and tissues such that compositional analysis of lymph collected via cannulation can provide useful information about biochemical and immune cell changes in different patho/physiological states, as well as being a resource for biomarker discovery. Nevertheless, lymph cannulation is a challenging procedure, and continuous collection of lymph for extended periods can lead to lymphocytopenia. Just as important, prolonged lymph collection might deplete other major components in lymph and plasma such as proteins and lipids, yet this has not been reported previously. Therefore, we investigated the effect of thoracic lymph collection in rats on the concentration of protein components (e.g. albumin) and specific lipids (total cholesterol and triglycerides) in lymph and plasma over time for 48 h after lymph cannulation. This study suggests that the level of total protein and albumin, but not lipids, is diminished over time during thoracic lymph collection in rats. We also provide evidence that this depletion impacts the pharmacokinetics of a drug delivery carrier that binds to albumin and lipoproteins. These findings present an important consideration to evaluating the lymphatic transport and pharmacokinetics of pharmaceutical agents that interact with endogenous proteins such as albumin.
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Affiliation(s)
- Mohammad Abdallah
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Ian K Styles
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - John F Quinn
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia; Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Michael R Whittaker
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia.
| | - Natalie L Trevaskis
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia; Baker Heart and Diabetes Institute, Melbourne, VIC 3000, Australia.
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2
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Li Y, Liu R, Ji Z, Gao L, Wang X, Zhang J, Hu L, Qu Y, Bai J, Wu D, Han S. Predicting lymphatic transport potential using graph transformer based on limited historical data from in vivo studies. J Control Release 2025; 384:113847. [PMID: 40393527 DOI: 10.1016/j.jconrel.2025.113847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2025] [Revised: 04/25/2025] [Accepted: 05/14/2025] [Indexed: 05/22/2025]
Abstract
The lymphatic system hosts a large number of therapeutic targets that can be used to modulate a wide range of diseases including cancers, autoimmune and inflammatory disorders, infectious diseases and metabolic syndrome; however, drug access to the lymphatic system is often challenging. Over the past decades significant efforts have been made to promote drug transport to the lymphatics through medicinal chemistry approaches, and a number of promising progresses are emerging. Nevertheless, so far it remains difficult to clearly delineate the mechanism of lymphatic drug transport and to map the design criteria for lymphotropic drug molecules, and the attempts to synthesize lymph-directing drug candidates or drug derivatives are largely in an experience-driven, trial and error basis. Furthermore, complex experimental procedures required for the study of lymphatic drug transport have limited data accumulation in the field, and this in turn hampers mechanistic studies and understanding of drug design criteria. Our current study aims to 1) review and summarize published work that assessed lymphatic drug transport by both direct measurement (e.g. determination of drug concentrations in lymph fluid) or indirect measurement (e.g. imaging methods or by comparing the changes of pharmacokinetics profile in the absence and presence of lymphatic transport blocker); 2) to analyze lymphatic drug transport data of 185 drugs according to experimental models and conditions, followed by dataset regrouping according to the extent of lymphatic transport; 3) to establish different Artificial Intelligence (AI) models including Graph Convolutional Network (GCN), Graph Attention Network (GAT) and Graph Transformer (GT) to predict the potential of drug transport via the lymphatics following oral administration, during which process data augmentation approaches were employed to compensate for the limited data. The results demonstrated that our model can enhance data and lymphatic drug transport prediction by correlating in vivo data with the chemical structure of drugs (represented by Simplified Molecular Input Line Entry System, SMILES). Additionally, we analyzed the relationship between the extent of lymphatic transport and a number of physicochemical parameters (including LogP, LogD7.4 and molecular weight) of drugs with reported lymphatic absorption data. The results demonstrate that the capability of lymphatic transport does not appear to be determined by any single parameter alone.
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Affiliation(s)
- Yunfeng Li
- School of Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Nanjing 210009, Jiangsu Province, China; School of Publishing, Beijing Institute of Graphic Communication, 1 Xinghua Avenue (Band Two), Daxing, Beijing 102600, China; CNPIEC Kexin Digital Technology (Beijing) Co., Ltd, 16 Gongti East Road, Chaoyang District, Beijing, China
| | - Ruiya Liu
- School of Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Nanjing 210009, Jiangsu Province, China
| | - Zonghao Ji
- Key Laboratory of Computing Power Network and Information Security, Ministry of Education, Shandong Computer Science Center (National Supercomputer Center in Jinan), Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250014, China; Shandong Provincial Key Laboratory of Computing Power Internet and Service Computing, Shandong Fundamental Research Center for Computer Science, Jinan, Shandong 250014, China
| | - Li Gao
- School of Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Nanjing 210009, Jiangsu Province, China
| | - Xiaolu Wang
- School of Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Nanjing 210009, Jiangsu Province, China
| | - Jiazhi Zhang
- School of Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Nanjing 210009, Jiangsu Province, China
| | - Luojuan Hu
- School of Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Nanjing 210009, Jiangsu Province, China
| | - Youyang Qu
- Key Laboratory of Computing Power Network and Information Security, Ministry of Education, Shandong Computer Science Center (National Supercomputer Center in Jinan), Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250014, China; Shandong Provincial Key Laboratory of Computing Power Internet and Service Computing, Shandong Fundamental Research Center for Computer Science, Jinan, Shandong 250014, China
| | - Jun Bai
- School of Computer Science, McGill University, 845 Rue Sherbrooke O, Montreal, QC H3A 0G4, Canada
| | - Di Wu
- School of Mathematics, Physics and Computing, University of Southern Queensland, 487-535 West St, Darling Heights, QLD 4350, Australia
| | - Sifei Han
- School of Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Nanjing 210009, Jiangsu Province, China.
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3
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Reddiar SB, Xie Y, Abdallah M, Han S, Hu L, Feeney OM, Gracia G, Anshabo A, Lu Z, Farooq MA, Styles IK, Phillips ARJ, Windsor JA, Porter CJH, Cao E, Trevaskis NL. Intestinal Lymphatic Biology, Drug Delivery, and Therapeutics: Current Status and Future Directions. Pharmacol Rev 2024; 76:1326-1398. [PMID: 39179383 DOI: 10.1124/pharmrev.123.001159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 07/29/2024] [Accepted: 08/14/2024] [Indexed: 08/26/2024] Open
Abstract
Historically, the intestinal lymphatics were considered passive conduits for fluids, immune cells, dietary lipids, lipid soluble vitamins, and lipophilic drugs. Studies of intestinal lymphatic drug delivery in the late 20th century focused primarily on the drugs' physicochemical properties, especially high lipophilicity, that resulted in intestinal lymphatic transport. More recent discoveries have changed our traditional view by demonstrating that the lymphatics are active, plastic, and tissue-specific players in a range of biological and pathological processes, including within the intestine. These findings have, in turn, inspired exploration of lymph-specific therapies for a range of diseases, as well as the development of more sophisticated strategies to actively deliver drugs or vaccines to the intestinal lymph, including a range of nanotechnologies, lipid prodrugs, and lipid-conjugated materials that "hitchhike" onto lymphatic transport pathways. With the increasing development of novel therapeutics such as biologics, there has been interest in whether these therapeutics are absorbed and transported through intestinal lymph after oral administration. Here we review the current state of understanding of the anatomy and physiology of the gastrointestinal lymphatic system in health and disease, with a focus on aspects relevant to drug delivery. We summarize the current state-of-the-art approaches to deliver drugs and quantify their uptake into the intestinal lymphatic system. Finally, and excitingly, we discuss recent examples of significant pharmacokinetic and therapeutic benefits achieved via intestinal lymphatic drug delivery. We also propose approaches to advance the development and clinical application of intestinal lymphatic delivery strategies in the future. SIGNIFICANCE STATEMENT: This comprehensive review details the understanding of the anatomy and physiology of the intestinal lymphatic system in health and disease, with a focus on aspects relevant to drug delivery. It highlights current state-of-the-art approaches to deliver drugs to the intestinal lymphatics and the shift toward the use of these strategies to achieve pharmacokinetic and therapeutic benefits for patients.
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Affiliation(s)
- Sanjeevini Babu Reddiar
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Yining Xie
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Mohammad Abdallah
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Sifei Han
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Luojuan Hu
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Orlagh M Feeney
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Gracia Gracia
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Abel Anshabo
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Zijun Lu
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Muhammad Asim Farooq
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Ian K Styles
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Anthony R J Phillips
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - John A Windsor
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Christopher J H Porter
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Enyuan Cao
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
| | - Natalie L Trevaskis
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia (S.B.R., Y.X., M.A., S.H., L.H., O.M.F., G.G., A.A., Z.L., M.A.F., I.K.S., C.J.H.P., E.C., N.L.T.); China Pharmaceutical University, Nanjing, China (S.H., L.H.); Applied Surgery and Metabolism Laboratory, School of Biological Sciences (A.R.J.P.) and Surgical and Translational Research Centre, Department of Surgery, Faculty of Medical and Health Sciences (A.R.J.P., J.A.W.), University of Auckland, Auckland, New Zealand; and Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.L.T.)
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Xie Y, Lu Z, Styles IK, Reddiar SB, Phillips ARJ, Windsor JA, Porter CJH, Han S, Trevaskis NL. Lymphatic Uptake of a Highly Lipophilic Protease Inhibitor Prodrug from a Lipid-Based Formulation is Limited by Instability in the Intestine. J Pharm Sci 2024; 113:2342-2351. [PMID: 38582284 DOI: 10.1016/j.xphs.2024.03.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/31/2024] [Accepted: 03/31/2024] [Indexed: 04/08/2024]
Abstract
Dabigatran etexilate (DABE) is a lipophilic double alkyl ester prodrug of dabigatran (DAB) which is a serine protease inhibitor used clinically as an anticoagulant. Recently, translocation of serine protease enzymes, including trypsin, from the gut into the mesenteric lymph and then blood has been associated with organ failure in acute and critical illnesses (ACIs). Delivery of DABE into mesenteric lymph may thus be an effective strategy to prevent organ failure in ACIs. Most drugs access the mesenteric lymph in low quantities following oral administration, as they are rapidly transported away from the intestine via the blood. Here, we examine the potential to deliver DABE into the mesenteric lymph by promoting association with lymph lipid transport pathways via co-administration with a lipid-based formulation (LBF). A series of self-emulsifying LBFs were designed and tested in vitro for their potential to form stable DABE loaded emulsions and keep DABE solubilised and stable over time in simulated gastrointestinal conditions. The LBFs were found to form fine emulsions with a droplet size of 214 ± 30 nm and DABE was stable in the formulation. The stability of DABE in vitro in simulated intestinal conditions, plasma and lymph samples was also evaluated to ensure stability in collected samples and to evaluate whether the prodrug is likely to release active DAB. Ultimately, a highly uniform and stable self-emulsifying Type III A LBF of DABE was chosen for progression into in vivo studies in male Sprague Dawley rats to confirm the lymphatic uptake and plasma pharmacokinetics. Both in vitro and in vivo in plasma and lymph, DABE was rapidly converted to an intermediate and DAB. The main species present in vivo in both plasma and lymph was DAB and mass transport of DABE and DAB in lymph was minimal (∼0.5 % of dose). Importantly, the concentration of DABE in lymph was substantially (20-176 fold) higher than in plasma, supporting that if the prodrug were stable and did not convert to DAB in the intestine, it would be lymphatically transported. Future studies will therefore focus on optimizing the design of the prodrug and formulation to improve stability during absorption and further promote lymphatic uptake.
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Affiliation(s)
- Yining Xie
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Zijun Lu
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Ian K Styles
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Sanjeevini Babu Reddiar
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | | | - John A Windsor
- Department of Surgery, The University of Auckland, Auckland, New Zealand
| | - Christopher J H Porter
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Sifei Han
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Natalie L Trevaskis
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia.
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5
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Feng W, Qin C, Abdelrazig S, Bai Z, Raji M, Darwish R, Chu Y, Ji L, Gray DA, Stocks MJ, Constantinescu CS, Barrett DA, Fischer PM, Gershkovich P. Vegetable oils composition affects the intestinal lymphatic transport and systemic bioavailability of co-administered lipophilic drug cannabidiol. Int J Pharm 2022; 624:121947. [PMID: 35753538 DOI: 10.1016/j.ijpharm.2022.121947] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 06/04/2022] [Accepted: 06/19/2022] [Indexed: 11/16/2022]
Abstract
Although natural sesame oil has been shown to facilitate the lymphatic delivery and oral bioavailability of the highly lipophilic drug cannabidiol (CBD), considerable variability remains an unresolved challenge. Vegetable oils differ substantially in composition, which could lead to differences in promotion of intestinal lymphatic transport of lipophilic drugs. Therefore, the differences in composition of sesame, sunflower, peanut, soybean, olive and coconut oils and their corresponding role as vehicles in promoting CBD lymphatic targeting and bioavailability were investigated in this study. The comparative analysis suggests that the fatty acids profile of vegetable oils is overall similar to the fatty acids profile in the corresponding chylomicrons in rat lymph. However, arachidonic acid (C20:4), was introduced to chylomicrons from endogenous nondietary sources. Overall, fatty acid composition of natural vegetable oils vehicles affected the intestinal lymphatic transport and bioavailability of CBD following oral administration in this work. Olive oil led to the highest concentration of CBD in the lymphatic system and in the systemic circulation in comparison to the other natural vegetable oils following oral administration in rats.
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Affiliation(s)
- Wanshan Feng
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Chaolong Qin
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Salah Abdelrazig
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Ziyu Bai
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Mekha Raji
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK; School of Pharmacy, Universita di Roma Tor Vergata, Rome
| | - Randa Darwish
- Division of Food, Nutrition and Dietetics, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD, UK
| | - YenJu Chu
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK; Tri-Service General Hospital, Medical supplies and maintenance office, National Defense Medical Center, Taipei, Taiwan
| | - Liuhang Ji
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - David A Gray
- Division of Food, Nutrition and Dietetics, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD, UK
| | - Michael J Stocks
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Cris S Constantinescu
- Division of Clinical Neuroscience, University of Nottingham and Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - David A Barrett
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Peter M Fischer
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Pavel Gershkovich
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK.
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McCright J, Ramirez A, Amosu M, Sinha A, Bogseth A, Maisel K. Targeting the Gut Mucosal Immune System Using Nanomaterials. Pharmaceutics 2021; 13:pharmaceutics13111755. [PMID: 34834170 PMCID: PMC8619927 DOI: 10.3390/pharmaceutics13111755] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 12/20/2022] Open
Abstract
The gastrointestinal (GI) tract is one the biggest mucosal surface in the body and one of the primary targets for the delivery of therapeutics, including immunotherapies. GI diseases, including, e.g., inflammatory bowel disease and intestinal infections such as cholera, pose a significant public health burden and are on the rise. Many of these diseases involve inflammatory processes that can be targeted by immune modulatory therapeutics. However, nonspecific targeting of inflammation systemically can lead to significant side effects. This can be avoided by locally targeting therapeutics to the GI tract and its mucosal immune system. In this review, we discuss nanomaterial-based strategies targeting the GI mucosal immune system, including gut-associated lymphoid tissues, tissue resident immune cells, as well as GI lymph nodes, to modulate GI inflammation and disease outcomes, as well as take advantage of some of the primary mechanisms of GI immunity such as oral tolerance.
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Ryšánek P, Grus T, Lukáč P, Kozlík P, Křížek T, Pozniak J, Roušarová J, Královičová J, Kutinová Canová N, Boleslavská T, Bosák J, Štěpánek F, Šíma M, Slanař O. Validity of cycloheximide chylomicron flow blocking method for the evaluation of lymphatic transport of drugs. Br J Pharmacol 2021; 178:4663-4674. [PMID: 34365639 DOI: 10.1111/bph.15644] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/14/2021] [Accepted: 07/24/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Lymphatic transport of drugs after oral administration is an important mechanism for absorption of highly lipophilic compounds. Direct measurement in lymph duct cannulated animals is the gold standard method, but non-invasive cycloheximide chylomicron flow blocking method has gained popularity recently. However, concerns about its reliability have been raised. The aim of this work was to investigate the validity of cycloheximide chylomicron flow blocking method for the evaluation of lymphatic transport using model compounds with high to very high lipophilicity, that is, abiraterone and cinacalcet. EXPERIMENTAL APPROACH Series of pharmacokinetic studies were conducted with abiraterone acetate and cinacalcet hydrochloride after enteral/intravenous administration to intact, lymph duct cannulated and/or cycloheximide pre-treated rats. KEY RESULTS Mean total absolute oral bioavailability of abiraterone and cinacalcet was 7.0% and 28.7%, respectively. There was a large and significant overestimation of the lymphatic transport extent by the cycloheximide method. Mean relative lymphatic bioavailability of abiraterone and cinacalcet in cycloheximide method was 28-fold and 3-fold higher than in cannulation method, respectively. CONCLUSION AND IMPLICATIONS Cycloheximide chylomicron flow blocking method did not provide reliable results on lymphatic absorption and substantially overestimated lymphatic transport for both molecules, that is, abiraterone and cinacalcet. This non-invasive method should not be used for the assessment of lymphatic transport and previously obtained data should be critically revised.
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Affiliation(s)
- Pavel Ryšánek
- Institute of Pharmacology, First Faculty of Medicine, General University Hospital in Prague, Charles University, Prague, Czech Republic
| | - Tomáš Grus
- Department of Cardiovascular Surgery, First Faculty of Medicine, General University Hospital in Prague, Charles University, Prague, Czech Republic
| | - Peter Lukáč
- Department of Cardiovascular Surgery, First Faculty of Medicine, General University Hospital in Prague, Charles University, Prague, Czech Republic
| | - Petr Kozlík
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Tomáš Křížek
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Jiří Pozniak
- Third Department of Surgery, First Faculty of Medicine, Motol University Hospital, Charles University, Prague, Czech Republic
| | - Jaroslava Roušarová
- Institute of Pharmacology, First Faculty of Medicine, General University Hospital in Prague, Charles University, Prague, Czech Republic
| | - Jana Královičová
- Institute of Pharmacology, First Faculty of Medicine, General University Hospital in Prague, Charles University, Prague, Czech Republic
| | - Nikolina Kutinová Canová
- Institute of Pharmacology, First Faculty of Medicine, General University Hospital in Prague, Charles University, Prague, Czech Republic
| | - Tereza Boleslavská
- Preformulation and Biopharmacy Department/Clinical Development Department, Zentiva, k.s, Prague, Czech Republic.,Department of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republic
| | - Jan Bosák
- Preformulation and Biopharmacy Department/Clinical Development Department, Zentiva, k.s, Prague, Czech Republic
| | - František Štěpánek
- Department of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republic
| | - Martin Šíma
- Institute of Pharmacology, First Faculty of Medicine, General University Hospital in Prague, Charles University, Prague, Czech Republic
| | - Ondřej Slanař
- Institute of Pharmacology, First Faculty of Medicine, General University Hospital in Prague, Charles University, Prague, Czech Republic
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8
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Tessier N, Moawad F, Amri N, Brambilla D, Martel C. Focus on the Lymphatic Route to Optimize Drug Delivery in Cardiovascular Medicine. Pharmaceutics 2021; 13:1200. [PMID: 34452161 PMCID: PMC8398144 DOI: 10.3390/pharmaceutics13081200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/27/2021] [Accepted: 07/29/2021] [Indexed: 11/26/2022] Open
Abstract
While oral agents have been the gold standard for cardiovascular disease therapy, the new generation of treatments is switching to other administration options that offer reduced dosing frequency and more efficacy. The lymphatic network is a unidirectional and low-pressure vascular system that is responsible for the absorption of interstitial fluids, molecules, and cells from the peripheral tissue, including the skin and the intestines. Targeting the lymphatic route for drug delivery employing traditional or new technologies and drug formulations is exponentially gaining attention in the quest to avoid the hepatic first-pass effect. The present review will give an overview of the current knowledge on the involvement of the lymphatic vessels in drug delivery in the context of cardiovascular disease.
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Affiliation(s)
- Nolwenn Tessier
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada
- Montreal Heart Institute Research Center, Montreal, QC H1T 1C8, Canada
| | - Fatma Moawad
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3T 1J4, Canada
- Department of Pharmaceutics, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Nada Amri
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada
- Montreal Heart Institute Research Center, Montreal, QC H1T 1C8, Canada
| | - Davide Brambilla
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Catherine Martel
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada
- Montreal Heart Institute Research Center, Montreal, QC H1T 1C8, Canada
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9
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Intestinal delivery in a long-chain fatty acid formulation enables lymphatic transport and systemic exposure of orlistat. Int J Pharm 2021; 596:120247. [PMID: 33486039 DOI: 10.1016/j.ijpharm.2021.120247] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/01/2021] [Accepted: 01/05/2021] [Indexed: 01/16/2023]
Abstract
Orlistat is a pancreatic lipase (PL) inhibitor that inhibits dietary lipid absorption and is used to treat obesity. The oral bioavailability of orlistat is considered zero after administration in standard formulations. This is advantageous in the treatment of obesity. However, if orlistat absorption could be improved it has the potential to treat diseases such as acute and critical illnesses where PL transport to the systemic circulation via gut lymph promotes organ failure. Orlistat is highly lipophilic and may associate with intestinal lipid absorption pathways into lymph. Here we investigate the potential to improve orlistat lymph and systemic uptake through intestinal administration in lipid formulations (LFs). The effect of lipid type, lipid dose, orlistat dose, and infusion time on lymph and systemic availability of orlistat was investigated. After administration in all LFs, orlistat concentrations in lymph were greater than in plasma, suggesting direct transport via lymph. Lymph and plasma orlistat derivative concentrations were ~8-fold greater after administration in a long-chain fatty acid (LC-FA) compared to a lipid-free, LC triglyceride (LC-TG) or medium-chain FA (MC-FA) formulation. Overall, administration of orlistat in a LC-FA formulation promotes lymph and systemic uptake which may enable treatment of diseases associated with elevated systemic PL activity.
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10
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Ryšánek P, Grus T, Šíma M, Slanař O. Lymphatic Transport of Drugs after Intestinal Absorption: Impact of Drug Formulation and Physicochemical Properties. Pharm Res 2020; 37:166. [PMID: 32770268 DOI: 10.1007/s11095-020-02858-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/11/2020] [Indexed: 02/05/2023]
Abstract
PURPOSE To provide a comprehensive and up-to-date overview focusing on the extent of lymphatic transport of drugs following intestinal absorption and to summarize available data on the impact of molecular weight, lipophilicity, formulation and prandial state. METHODS Literature was searched for in vivo studies quantifying extent of lymphatic transport of drugs after enteral dosing. Pharmacokinetic data were extracted and summarized. Influence of molecular weight, log P, formulation and prandial state was analyzed using relative bioavailability via lymph (FRL) as the parameter for comparison. The methods and animal models used in the studies were also summarized. RESULTS Pharmacokinetic data on lymphatic transport were available for 103 drugs. Significantly higher FRL [median (IQR)] was observed in advanced lipid based formulations [54.4% (52.0)] and oil solutions [38.9% (60.8)] compared to simple formulations [2.0% (27.1)], p < 0.0001 and p = 0.004, respectively. Advanced lipid based formulations also provided substantial FRL in drugs with log P < 5, which was not observed in simple formulations and oil solutions. No relation was found between FRL and molecular weight. There were 10 distinct methods used for in vivo testing of lymphatic transport after intestinal absorption so far. CONCLUSION Advanced lipid based formulations provide superior ability to increase lymphatic absorption in drugs of various molecular weights and in drugs with moderate to low lipophilicity.
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Affiliation(s)
- Pavel Ryšánek
- Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.
| | - Tomáš Grus
- Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Martin Šíma
- Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Ondřej Slanař
- Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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11
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Trevaskis NL, Lee G, Escott A, Phang KL, Hong J, Cao E, Katneni K, Charman SA, Han S, Charman WN, Phillips ARJ, Windsor JA, Porter CJH. Intestinal Lymph Flow, and Lipid and Drug Transport Scale Allometrically From Pre-clinical Species to Humans. Front Physiol 2020; 11:458. [PMID: 32670074 PMCID: PMC7326060 DOI: 10.3389/fphys.2020.00458] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/16/2020] [Indexed: 12/15/2022] Open
Abstract
The intestinal lymphatic system transports fluid, immune cells, dietary lipids, and highly lipophilic drugs from the intestine to the systemic circulation. These transport functions are important to health and when dysregulated contribute to pathology. This has generated significant interest in approaches to deliver drugs to the lymphatics. Most of the current understanding of intestinal lymph flow, and lymphatic lipid and drug transport rates, comes from in vitro studies and in vivo animal studies. In contrast, intestinal lymphatic transport studies in human subjects have been limited. Recently, three surgical patients had cannulation of the thoracic lymph duct for collection of lymph before and during a stepwise increase in enteral feed rate. We compared these data to studies where we previously enterally administered controlled quantities of lipid and the lipophilic drug halofantrine to mice, rats and dogs and collected lymph and blood (plasma). The collected lymph was analyzed to compare lymph flow rate, triglyceride (TG) and drug transport rates, and plasma was analyzed for drug concentrations, as a function of enteral lipid dose across species. Lymph flow rate, TG and drug transport increased with lipid administration in all species tested, and scaled allometrically according to the equation A = aM E where A is the lymph transport parameter, M is animal body mass, a is constant and E is the allometric exponent. For lymph flow rate and TG transport, the allometric exponents were 0.84-0.94 and 0.80-0.96, respectively. Accordingly, weight normalized lymph flow and TG mass transport were generally lower in larger compared to smaller species. In comparison, mass transport of drug via lymph increased in a greater than proportional manner with species body mass with an exponent of ∼1.3. The supra-proportional increase in lymphatic drug transport with species body mass appeared to be due to increased partitioning of drug into lymph rather than blood following absorption. Overall, this study proposes that intestinal lymphatic flow, and lymphatic lipid and drug transport in humans is most similar to species with higher body mass such as dogs and underestimated by studies in rodents. Notably, lymph flow and lipid transport in humans can be predicted from animal data via allometric scaling suggesting the potential for similar relationships with drug transport.
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Affiliation(s)
- Natalie L Trevaskis
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Given Lee
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,Centre for Drug Candidate Optimisation, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Alistair Escott
- Surgical and Translational Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand.,HBP/Upper GI Unit, Department of General Surgery, Auckland City Hospital, Auckland, New Zealand
| | - Kian Liun Phang
- Surgical and Translational Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand.,HBP/Upper GI Unit, Department of General Surgery, Auckland City Hospital, Auckland, New Zealand
| | - Jiwon Hong
- Applied Surgery and Metabolism Laboratory, School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Enyuan Cao
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Kasiram Katneni
- Centre for Drug Candidate Optimisation, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Susan A Charman
- Centre for Drug Candidate Optimisation, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Sifei Han
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - William N Charman
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Anthony R J Phillips
- Surgical and Translational Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand.,Applied Surgery and Metabolism Laboratory, School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - John A Windsor
- Surgical and Translational Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand.,HBP/Upper GI Unit, Department of General Surgery, Auckland City Hospital, Auckland, New Zealand
| | - Christopher J H Porter
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
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12
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The mechanisms of pharmacokinetic food-drug interactions - A perspective from the UNGAP group. Eur J Pharm Sci 2019; 134:31-59. [PMID: 30974173 DOI: 10.1016/j.ejps.2019.04.003] [Citation(s) in RCA: 209] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/12/2019] [Accepted: 04/02/2019] [Indexed: 02/06/2023]
Abstract
The simultaneous intake of food and drugs can have a strong impact on drug release, absorption, distribution, metabolism and/or elimination and consequently, on the efficacy and safety of pharmacotherapy. As such, food-drug interactions are one of the main challenges in oral drug administration. Whereas pharmacokinetic (PK) food-drug interactions can have a variety of causes, pharmacodynamic (PD) food-drug interactions occur due to specific pharmacological interactions between a drug and particular drinks or food. In recent years, extensive efforts were made to elucidate the mechanisms that drive pharmacokinetic food-drug interactions. Their occurrence depends mainly on the properties of the drug substance, the formulation and a multitude of physiological factors. Every intake of food or drink changes the physiological conditions in the human gastrointestinal tract. Therefore, a precise understanding of how different foods and drinks affect the processes of drug absorption, distribution, metabolism and/or elimination as well as formulation performance is important in order to be able to predict and avoid such interactions. Furthermore, it must be considered that beverages such as milk, grapefruit juice and alcohol can also lead to specific food-drug interactions. In this regard, the growing use of food supplements and functional food requires urgent attention in oral pharmacotherapy. Recently, a new consortium in Understanding Gastrointestinal Absorption-related Processes (UNGAP) was established through COST, a funding organisation of the European Union supporting translational research across Europe. In this review of the UNGAP Working group "Food-Drug Interface", the different mechanisms that can lead to pharmacokinetic food-drug interactions are discussed and summarised from different expert perspectives.
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13
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McEvoy CL, Trevaskis NL, Feeney OM, Edwards GA, Perlman ME, Ambler CM, Porter CJH. Correlating in Vitro Solubilization and Supersaturation Profiles with in Vivo Exposure for Lipid Based Formulations of the CETP Inhibitor CP-532,623. Mol Pharm 2017; 14:4525-4538. [PMID: 29076741 DOI: 10.1021/acs.molpharmaceut.7b00660] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Lipid based formulations (LBFs) are a promising formulation strategy for many poorly water-soluble drugs and have been shown previously to enhance the oral exposure of CP-532,623, an oral cholesteryl ester transfer protein inhibitor. In the current study, an in vitro lipid digestion model was used to probe the relationship between drug solubilization and supersaturation on in vitro dispersion and digestion of LBF containing long chain (LC) lipids and drug absorption in vivo. After in vitro digestion of LBF based on LC lipids, the proportion of CP-532,623 maintained in the solubilized state in the aqueous phase of the digest was highest in formulations containing Kolliphor RH 40, and in most cases outperformed equivalent formulations based on MC lipids. Subsequent administration of the LC-LBFs to beagle dogs resulted in reasonable correlation between concentrations of CP-532,623 measured in the aqueous phase of the in vitro digest after 30 min digestion and in vivo exposure (AUC); however, the LC-LBFs required greater in vitro drug solubilization to elicit similar in vivo exposure when compared to previous studies with MC-LBF. Although post digestion solubilization was enhanced in LC-LBF compared to MC-LBF, equilibrium solubility studies of CP-532,623 in the aqueous phase isolated from blank lipid digestion experiments revealed that equilibrium solubility was also higher, and therefore supersaturation lower. A revised correlation based on supersaturation in the digest aqueous phase and drug absorption was therefore generated. A single, linear correlation was evident for both LC- and MC-LBF containing Kolliphor RH 40, but this did not extend to formulations based on other surfactants. The data suggest that solubilization and supersaturation are significant drivers of drug absorption in vivo, and that across formulations with similar formulation composition good correlation is evident between in vitro and in vivo measures. However, across dissimilar formulations, solubilization and supersaturation alone are not sufficient to explain drug exposure and other factors also likely play a role.
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Affiliation(s)
| | | | | | - Glenn A Edwards
- Department of Veterinary Sciences, The University of Melbourne , Werribee, Victoria 3030, Australia
| | - Michael E Perlman
- Pfizer Global Research and Development , Groton, Connecticut 06340, United States
| | - Catherine M Ambler
- Pfizer Global Research and Development , Groton, Connecticut 06340, United States
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14
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Han S, Hu L, Gracia, Quach T, Simpson JS, Edwards GA, Trevaskis NL, Porter CJH. Lymphatic Transport and Lymphocyte Targeting of a Triglyceride Mimetic Prodrug Is Enhanced in a Large Animal Model: Studies in Greyhound Dogs. Mol Pharm 2016; 13:3351-3361. [DOI: 10.1021/acs.molpharmaceut.6b00195] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
| | | | | | | | | | - Glenn A. Edwards
- School
of Animal and Veterinary Sciences, Charles Sturt University, Boorooma
Street, Wagga Wagga, New
South Wales 2650, Australia
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15
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Bergström CAS, Charman WN, Porter CJH. Computational prediction of formulation strategies for beyond-rule-of-5 compounds. Adv Drug Deliv Rev 2016; 101:6-21. [PMID: 26928657 DOI: 10.1016/j.addr.2016.02.005] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/11/2016] [Accepted: 02/17/2016] [Indexed: 12/12/2022]
Abstract
The physicochemical properties of some contemporary drug candidates are moving towards higher molecular weight, and coincidentally also higher lipophilicity in the quest for biological selectivity and specificity. These physicochemical properties move the compounds towards beyond rule-of-5 (B-r-o-5) chemical space and often result in lower water solubility. For such B-r-o-5 compounds non-traditional delivery strategies (i.e. those other than conventional tablet and capsule formulations) typically are required to achieve adequate exposure after oral administration. In this review, we present the current status of computational tools for prediction of intestinal drug absorption, models for prediction of the most suitable formulation strategies for B-r-o-5 compounds and models to obtain an enhanced understanding of the interplay between drug, formulation and physiological environment. In silico models are able to identify the likely molecular basis for low solubility in physiologically relevant fluids such as gastric and intestinal fluids. With this baseline information, a formulation scientist can, at an early stage, evaluate different orally administered, enabling formulation strategies. Recent computational models have emerged that predict glass-forming ability and crystallisation tendency and therefore the potential utility of amorphous solid dispersion formulations. Further, computational models of loading capacity in lipids, and therefore the potential for formulation as a lipid-based formulation, are now available. Whilst such tools are useful for rapid identification of suitable formulation strategies, they do not reveal drug localisation and molecular interaction patterns between drug and excipients. For the latter, Molecular Dynamics simulations provide an insight into the interplay between drug, formulation and intestinal fluid. These different computational approaches are reviewed. Additionally, we analyse the molecular requirements of different targets, since these can provide an early signal that enabling formulation strategies will be required. Based on the analysis we conclude that computational biopharmaceutical profiling can be used to identify where non-conventional gateways, such as prediction of 'formulate-ability' during lead optimisation and early development stages, are important and may ultimately increase the number of orally tractable contemporary targets.
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Affiliation(s)
- Christel A S Bergström
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia; Department of Pharmacy, Uppsala University, Uppsala Biomedical Center, P.O. Box 580, SE-751 23 Uppsala, Sweden.
| | - William N Charman
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Christopher J H Porter
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia; ARC Centre of Excellence in Convergent Nano-Bio Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
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16
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Qureshi AA, Khan DA, Silswal N, Saleem S, Qureshi N. Evaluation of Pharmacokinetics, and Bioavailability of Higher Doses of Tocotrienols in Healthy Fed Humans. JOURNAL OF CLINICAL & EXPERIMENTAL CARDIOLOGY 2016; 7:434. [PMID: 27493840 PMCID: PMC4968874 DOI: 10.4172/2155-9880.1000434] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Tocotrienols has been known to lower serum lipid parameters below 500 mg/d, while increase lipid parameters at higher dose of 750 mg/d. δ-Tocotrienol has a novel inflammatory property of concentration-dependent inhibition and activation. Therefore, inhibition (anti-inflammatory) property of tocotrienols at low doses is useful for cardiovascular disease, whereas, activation (pro-inflammatory) property using high dose is found effective for treatments of various types of cancer. We have recently described plasma bioavailability of 125 mg/d, 250 mg/d and 500 mg/d doses of δ-tocotrienol in healthy fed subjects, which showed dose-dependent increases in area under the curve (AUC) and maximum concentration (Cmax). Hence, in the current study, higher doses of tocotrienols have used to analyze its effect on plasma pharmacokinetic parameters. AIMS To evaluate the safety and bioavailability of higher doses (750 mg and 1000 mg) of annatto-based tocotrienols in healthy fed subjects. All four isomers (α-, β-, γ-, δ-) of tocols (tocotrienols and tocopherols) present in the plasmas of subjects were quantified and analyzed for various pharmacokinetic parameters. STUDY DESIGN An open-label, randomized study was performed to analyze pharmacokinetics and bioavailability of δ-tocotrienol in 6 healthy fed subjects. All subjects (3/dose) were randomly assigned to one of each dose of 750 mg or 1000 mg. Blood samples were collected at 0, 1, 2, 4, 6, 8 h intervals and all isomers of α-,β-,γ-,δ-tocotrienols, and tocopherols in plasmas were quantified by HPLC. RESULTS Oral administration of 750 and 1000 mg/d of tocotrienols resulted in dose-dependent increases in plasmas (ng/ml) AUCt0-t8 6621, 7450; AUCt0-∞ 8688, 9633; AUMC t0-∞ 52497, 57199; MRT 6.04, 5.93; Cmax 1444, 1592 (P<0.05), respectively, of δ-tocotrienol isomer. Moreover, both doses also resulted in plasmas Tmax 3.33-4 h; elimination half-life (t1/2 h) 2.74, 2.68; time of clearance (Cl-T, l/h) 0.086, 0.078; volume of distribution (Vd/f, mg/h) 0.34, 0.30; and elimination rate constant (ke; h-1) 0.25, 0.17, respectively of δ- tocotrienol isomer. Similar results of these parameters were reported for γ-tocotrienol, β- tocotrienol, α-tocotrienol, δ-tocopherol, γ-tocopherol, and β-tocopherol, except for α- tocopherol. CONCLUSIONS This study has described pharmacokinetics using higher doses of 750 mg/d and 1000 mg/d of δ-tocotrienol. These results confirmed earlier findings that Tmax was 3-4 h for all isomers of tocotrienols and tocopherols except for α-tocopherol (6 h). These higher doses of tocotrienols were found safe in humans and may be useful for treatments of various types of cancer, diabetes, and Alzheimer's disease.
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Affiliation(s)
- Asaf A Qureshi
- Department of Basic Medical Sciences, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO 64108, USA
| | - Dilshad A Khan
- Department of Chemical Pathology and Endocrinology, Armed Forces Institute of Pathology, and National University of Medical Science, Rawalpindi, 64000, Pakistan
| | - Neerupma Silswal
- Department of Basic Medical Sciences, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO 64108, USA
| | - Shahid Saleem
- Pakistan Ordinance Factory Hospital, Wah Cantt, Rawalpindi, 64000, Pakistan
| | - Nilofer Qureshi
- Department of Basic Medical Sciences, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO 64108, USA
- Division of Pharmacology and Toxicology, School of Pharmacy, University of Missouri- Kansas City, 2464 Charlotte Street, Kansas City, MO 64108, USA
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Han S, Hu L, Quach T, Simpson JS, Trevaskis NL, Porter CJH. Constitutive Triglyceride Turnover into the Mesenteric Lymph Is Unable to Support Efficient Lymphatic Transport of a Biomimetic Triglyceride Prodrug. J Pharm Sci 2016; 105:786-796. [PMID: 26540595 DOI: 10.1002/jps.24670] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 09/07/2015] [Accepted: 09/11/2015] [Indexed: 12/17/2022]
Abstract
The triglyceride (TG) mimetic prodrug (1,3-dipalmitoyl-2-mycophenoloyl glycerol, 2-MPA-TG) biochemically integrates into intestinal lipid transport and lipoprotein assembly pathways and thereby promotes the delivery of mycophenolic acid (MPA) into the lymphatic system. As lipoprotein (LP) formation occurs constitutively, even in the fasted state, the current study aimed to determine whether lymphatic transport of 2-MPA-TG was dependent on coadministered exogenous lipid. In vitro incubation of the prodrug with rat digestive fluid and in situ intestinal perfusion experiments revealed that hydrolysis and absorption of the prodrug were relatively unaffected by the quantity of lipid in formulations. In vivo studies in rats, however, showed that the lymphatic transport of TG and 2-MPA-TG was significantly higher following administration with higher quantities of lipid and that oleic acid (C18:1) was more effective in promoting prodrug transport than lipids with higher degrees of unsaturation. The recovery of 2-MPA-TG and TG in lymph correlated strongly (R(2) = 0.99) and more than 97% of the prodrug was associated with chylomicrons. Inhibition of LP assembly by Pluronic L81 simultaneously inhibited the lymphatic transport of 2-MPA-TG and TG. In conclusion, although the TG mimetic prodrug effectively incorporates into TG resynthetic pathways, lipid coadministration is still required to support efficient lymphatic transport.
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Affiliation(s)
- Sifei Han
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Luojuan Hu
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Tim Quach
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia; Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Jamie S Simpson
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Natalie L Trevaskis
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.
| | - Christopher J H Porter
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.
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Patel AR, Doddapaneni R, Andey T, Wilson H, Safe S, Singh M. Evaluation of self-emulsified DIM-14 in dogs for oral bioavailability and in Nu/nu mice bearing stem cell lung tumor models for anticancer activity. J Control Release 2015; 213:18-26. [PMID: 26079185 PMCID: PMC5645071 DOI: 10.1016/j.jconrel.2015.06.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 06/11/2015] [Indexed: 12/29/2022]
Abstract
3, 3-Diindolylmethane-14 (DIM-14), a novel lipophilic derivative of DIM, has demonstrated anticancer activity in different types of cancers. However, poor solubility and low oral bioavailability of DIM-14 limit its translational benefits in vivo. This study was carried out to improve the oral bioavailability of DIM-14 via self-emulsifying drug (SED) delivery system in dogs and to evaluate pharmacodynamic characteristics of SED against H1650 stem cell tumor models. DIM-14 was incorporated into an oil, surfactant, and co-surfactant mixture using labrafil and tween-80 to obtain SED. SED were characterized by droplet size, polydispersitiy index (PDI), zeta potential, entrapment efficiency (EE), in vitro permeability and drug release (investigated with Caco-2 monolayers and dissolution apparatus respectively). Pharmacokinetic parameters in dogs were evaluated and analyzed using Winonlin. Anti-tumor activity was carried out in H1650 lung tumor model. Particle size of SED was between 230 and 246 nm and surface charge was negative and ranged from 26.50 to 28.69 mV. Entrapment efficiency of SED was 85%. Pharmacokinetic evaluation in dogs showed increased Cmax (39.18 ± 7.34 vs 21.68 ± 6.3 μg·dL-1), higher AUC0-t (34,481.34 ± 1125.46 vs 14,159.53 ± 702.20 μg·min·dL-1) and improved absorption with 3 times more bioavailability of SED compared to DIM-14 solution. SED showed ~30-59% tumor volume/weight reduction in H1650 tumor model compared to DIM-P solution. Our studies demonstrate the potential application of self-emulsifying drug delivery system (SEDDS), that enhances oral absorption of DIM-14 and increased anti-tumor activity against lung tumor models.
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Affiliation(s)
- Apurva R Patel
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Ravi Doddapaneni
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Terrick Andey
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Heather Wilson
- Institutes of Biosciences and Technology, Houston, TX 77843, USA
| | - Stephen Safe
- Institutes of Biosciences and Technology, Houston, TX 77843, USA; Texas A & M Health Sciences Center, Houston, TX 77030, USA
| | - Mandip Singh
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA.
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Patel AR, Godugu C, Wilson H, Safe S, Singh M. Evaluation of Spray BIO-Max DIM-P in Dogs for Oral Bioavailability and in Nu/nu Mice Bearing Orthotopic/Metastatic Lung Tumor Models for Anticancer Activity. Pharm Res 2015; 32:2292-2300. [PMID: 25576245 PMCID: PMC5725226 DOI: 10.1007/s11095-015-1620-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 01/05/2015] [Indexed: 11/29/2022]
Abstract
PURPOSE In an effort to prepare an oral dosage form for poorly bioavailable anti-cancer agents, we have incorporated spray drying using a customized spray gun generating enteric coated Self-emulsifying drug delivery systems. The objective of this study was to design and evaluate pharmacokinetics and pharmacodynamic characteristics of Spray BIO-Max DIM-P (SB DIM-P). METHODS SB DIM-P was prepared and optimized based on physico-chemical characteristics using design of experiment (DOE-Vr 8.0) software. Pharmacokinetic parameters in dogs and rats were evaluated and analyzed using Winonlin. Anti-tumor activity was carried out in orthotopic and metastatic lung tumor models using size M capsules in mice. RESULTS Based on the optimization using DOE analysis of SB DIM-P characteristics, formulations were selected for further investigation. Pharmacokinetic studies showed a 30% increase in oral bioavailability in rats and ~2.9 times more bioavailability of SB DIM-P compare to solution in dogs. SB DIM-P showed ~20-25% more tumor volume/weight reduction in H1650 metastatic tumor model and ~25-30% tumor volume/weight reduction in A549 orthotopic tumor model compared to DIM-P solution. CONCLUSIONS Our studies demonstrate the potential application of spray dried enteric coated self-emulsifying delivery system (SB DIM-P) to enhances oral absorption and efficacy of DIM-P in lung tumor models.
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Affiliation(s)
- Apurva R Patel
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, Florida, 32307, USA
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20
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Trevaskis NL, Hu L, Caliph SM, Han S, Porter CJH. The mesenteric lymph duct cannulated rat model: application to the assessment of intestinal lymphatic drug transport. J Vis Exp 2015:52389. [PMID: 25866901 PMCID: PMC4401200 DOI: 10.3791/52389] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The intestinal lymphatic system plays key roles in fluid transport, lipid absorption and immune function. Lymph flows directly from the small intestine via a series of lymphatic vessels and nodes that converge at the superior mesenteric lymph duct. Cannulation of the mesenteric lymph duct thus enables the collection of mesenteric lymph flowing from the intestine. Mesenteric lymph consists of a cellular fraction of immune cells (99% lymphocytes), aqueous fraction (fluid, peptides and proteins such as cytokines and gut hormones) and lipoprotein fraction (lipids, lipophilic molecules and apo-proteins). The mesenteric lymph duct cannulation model can therefore be used to measure the concentration and rate of transport of a range of factors from the intestine via the lymphatic system. Changes to these factors in response to different challenges (e.g., diets, antigens, drugs) and in disease (e.g., inflammatory bowel disease, HIV, diabetes) can also be determined. An area of expanding interest is the role of lymphatic transport in the absorption of orally administered lipophilic drugs and prodrugs that associate with intestinal lipid absorption pathways. Here we describe, in detail, a mesenteric lymph duct cannulated rat model which enables evaluation of the rate and extent of lipid and drug transport via the lymphatic system for several hours following intestinal delivery. The method is easily adaptable to the measurement of other parameters in lymph. We provide detailed descriptions of the difficulties that may be encountered when establishing this complex surgical method, as well as representative data from failed and successful experiments to provide instruction on how to confirm experimental success and interpret the data obtained.
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Affiliation(s)
- Natalie L Trevaskis
- Drug Delivery, Disposition, and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus);
| | - Luojuan Hu
- Drug Delivery, Disposition, and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus)
| | - Suzanne M Caliph
- Drug Delivery, Disposition, and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus)
| | - Sifei Han
- Drug Delivery, Disposition, and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus)
| | - Christopher J H Porter
- Drug Delivery, Disposition, and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus);
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21
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McEvoy CL, Trevaskis NL, Edwards GA, Perlman ME, Ambler CM, Mack MC, Brockhurst B, Porter CJ. In vitro–in vivo evaluation of lipid based formulations of the CETP inhibitors CP-529,414 (torcetrapib) and CP-532,623. Eur J Pharm Biopharm 2014; 88:973-85. [DOI: 10.1016/j.ejpb.2014.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 08/01/2014] [Accepted: 08/11/2014] [Indexed: 10/24/2022]
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Kim H, Seong I, Ro J, Hwang SH, Yun G, Lee J. Enhanced association of probucol with chylomicron by pharmaceutical excipients: an in vitro study. Drug Dev Ind Pharm 2014; 41:1073-9. [PMID: 24934664 DOI: 10.3109/03639045.2014.927479] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study, we examined the effect of pharmaceutical excipients preferred in lipid-based formulations for lymphatic delivery on in vitro association of probucol with chylomicron (CM). CM stability study was performed under the conditions of room temperature, refrigeration and deep freezing to optimize the storage condition of CM dispersion prior to CM-binding study. The mean particle size, size distribution and zeta potential value were considerably maintained for 48 h under the refrigeration condition. CM-binding study was conducted using probucol incorporated in vehicles composed of solubilizer (Transcutol HP or ethanol or propylene glycol) or surfactant (Tween-80 or Tween-20 or Cremophor ELP), and CM dispersion obtained by a density-gradient ultracentrifugation. Levels of the association of probucol with CM were largely governed by solubility of probucol in pharmaceutical excipients tested in this study, and the ability of solubilizers tested to enhance the affinity of probucol with CM was much greater than that of surfactants tested. Furthermore, the association of probucol with CM was enhanced by increasing the amount of the drug solubilized in propylene glycol or Transcutol HP. Together, the result of this CM-binding study showed that solubilizers tested in this study can increase levels of the association of probucol with CM, potentially leading to an increase in lymphatic exposure of drugs. Thus, identifying pharmaceutical excipients having better solubilizing ability would be advantageous for enhanced lymphatic delivery.
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Affiliation(s)
- Hyeongmin Kim
- Pharmaceutical Formulation Design Laboratory, College of Pharmacy, Chung-Ang University , Seoul , South Korea and
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23
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Alqahtani S, Alayoubi A, Nazzal S, Sylvester PW, Kaddoumi A. Enhanced solubility and oral bioavailability of γ-tocotrienol using a self-emulsifying drug delivery system (SEDDS). Lipids 2014; 49:819-29. [PMID: 24934591 DOI: 10.1007/s11745-014-3923-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 05/31/2014] [Indexed: 12/30/2022]
Abstract
The aim of this study was to evaluate the in vitro and in vivo performance of γ-tocotrienol (γ-T3) incorporated in a self-emulsifying drug delivery system (SEDDS) and to compare its enhanced performance to a commercially available product, namely Tocovid Suprabio™ (hereafter Tocovid), containing tocotrienols. The solubilization of γ-T3 was tested in a dynamic in vitro lipolysis model followed by in vitro cellular uptake study for the lipolysis products. In addition, in vitro uptake studies using Caco2 cells were conducted at different concentrations of γ-T3 prepared as SEDDS, Tocovid, or mixed micelles. γ-T3 incorporated in SEDDS or Tocovid was orally administered to rats at different doses and absolute oral bioavailability from both formulations were determined. The dynamic in vitro lipolysis experiment showed about two fold increase in the solubilization of γ-T3 prepared as SEDDS compared to Tocovid, which correlated with higher cellular uptake in the subsequent uptake studies. In vitro cellular uptake and in vivo oral bioavailability studies have shown a twofold increase in the cellular uptake and oral bioavailability of γ-T3 incorporated in SEDDS compared to Tocovid as a result of improvement in its solubility and passive uptake as confirmed by in vitro studies. In conclusion, incorporation of γ-T3 in SEDDS formulation enhanced γ-T3 solubilization and passive permeability, thus its cellular uptake and oral bioavailability when compared to Tocovid.
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Affiliation(s)
- Saeed Alqahtani
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Dr., Monroe, LA, 71201, USA
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Caliph SM, Faassen FW, Porter CJH. The influence of intestinal lymphatic transport on the systemic exposure and brain deposition of a novel highly lipophilic compound with structural similarity to cholesterol. J Pharm Pharmacol 2014; 66:1377-87. [DOI: 10.1111/jphp.12268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 03/23/2014] [Indexed: 11/29/2022]
Abstract
Abstract
Objectives
To assess the role of intestinal lymphatic transport in the oral bioavailability and brain deposition of a highly lipophilic, centrally acting drug candidate (Org 49209) in comparison to cholesterol, a close structural analogue.
Methods
The intestinal lymphatic transport of Org 49209 and cholesterol was assessed in lymph-cannulated anaesthetised rats and total bioavailability evaluated in non-lymph-cannulated animals. Parallel groups were employed to examine the brain deposition of Org 49209 after intraduodenal and intraperitoneal administrations.
Key findings
The contribution of intestinal lymphatic transport to total bioavailability was similar for Org 49209 and cholesterol (approximately 40% of the absorbed dose). However, the oral bioavailability of Org 49209 was significantly (fourfold) lower than cholesterol. Brain deposition of Org 49209 was similar after intraduodenal and intraperitoneal administration. Systemic exposure, however, was higher after intraduodenal administration and brain-to-plasma ratios were therefore reduced.
Conclusion
The oral bioavailability of Org 49209 was significantly lower than that of its structural analogue cholesterol; however, intestinal lymphatic transport played a similar role in oral bioavailability for both compounds. Brain to plasma ratios were lower after intraduodenal versus intraperitoneal administration, suggesting that drug association with intestinal lymph lipoproteins may limit central nervous system access for highly lipophilic drugs.
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Affiliation(s)
- Suzanne M Caliph
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville campus), Parkville, Vic, Australia
| | - Fried W Faassen
- Pharmaceutical Sciences and Clinical Supply, Merck Sharp & Dohme, Oss, The Netherlands
| | - Christopher J H Porter
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville campus), Parkville, Vic, Australia
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25
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Choo EF, Boggs J, Zhu C, Lubach JW, Catron ND, Jenkins G, Souers AJ, Voorman R. The role of lymphatic transport on the systemic bioavailability of the Bcl-2 protein family inhibitors navitoclax (ABT-263) and ABT-199. Drug Metab Dispos 2014; 42:207-12. [PMID: 24212376 DOI: 10.1124/dmd.113.055053] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Navitoclax (ABT-263), a Bcl-2 family inhibitor and ABT-199, a Bcl-2 selective inhibitor, are high molecular weight, high logP molecules that show low solubility in aqueous media. While these properties are associated with low oral bioavailability (F), both navitoclax and ABT-199 showed moderate F in preclinical species. The objective of the described study was to determine if lymphatic transport contributes to the systemic availability of navitoclax and ABT-199 in dogs. The intravenous pharmacokinetics of navitoclax and ABT-199 were determined in intact (noncannulated) dogs. In oral studies, tablets (100 mg) of navitoclax and ABT-199 were administered to both intact and thoracic lymph duct-cannulated (TDC) dogs. The clearance of navitoclax and ABT-199 was low; 0.673 and 0.779 ml/min per kilogram, respectively. The volume of distribution of both compounds was low (0.5-0.7 l/kg). The half-lives of navitoclax and ABT-199 were 22.2 and 12.9 hours, respectively. The F of navitoclax and ABT-199 were 56.5 and 38.8%, respectively, in fed intact dogs. In fed TDC dogs, 13.5 and 4.67% of the total navitoclax and ABT-199 doses were observed in lymph with the % F of navitoclax and ABT-199 of 21.7 and 20.2%, respectively. The lower lymphatic transport of ABT-199 corresponds to the lower overall % F of ABT-199 versus navitoclax despite similar systemic availability via the portal vein (similar % F in TDC animals). This is consistent with the higher long chain triglyceride solubility of navitoclax (9.2 mg/ml) versus ABT-199 (2.2 mg/ml). In fasted TDC animals, lymph transport of navitoclax and ABT-199 decreased by 1.8-fold and 10-fold, respectively.
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Affiliation(s)
- Edna F Choo
- Departments of Drug Metabolism and Pharmacokinetics (E.F.C., J.B.) and Pharmaceutics (J.W.L.), Genentech Inc, South San Francisco, California; Department of Drug Metabolism and Pharmacokinetics, WuXi AppTec (Suzhou) Co., Ltd, Suzhou, Jiangsu Province ,China (C.Z.); Departments of Physical Chemistry (N.D.C.), Drug Metabolism (G.J., R.V.) and Cancer Research (A.J.S.), AbbVie, North Chicago, Illinois
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Hackett MJ, Zaro JL, Shen WC, Guley PC, Cho MJ. Fatty acids as therapeutic auxiliaries for oral and parenteral formulations. Adv Drug Deliv Rev 2013; 65:1331-9. [PMID: 22921839 DOI: 10.1016/j.addr.2012.07.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 06/25/2012] [Accepted: 07/20/2012] [Indexed: 01/08/2023]
Abstract
Many drugs have decreased therapeutic activity due to issues with absorption, distribution, metabolism and excretion. The co-formulation or covalent attachment of drugs with fatty acids has demonstrated some capacity to overcome these issues by improving intestinal permeability, slowing clearance and binding serum proteins for selective tissue uptake and metabolism. For orally administered drugs, albeit at low level of availability, the presence of fatty acids and triglycerides in the intestinal lumen may promote intestinal uptake of small hydrophilic molecules. Small lipophilic drugs or acylated hydrophilic drugs also show increased lymphatic uptake and enhanced passive diffusional uptake. Fatty acid conjugation of small and large proteins or peptides has exhibited protracted plasma half-lives, site-specific delivery and sustained release upon parenteral administration. These improvements are most likely due to associations with lipid-binding serum proteins, namely albumin, LDL and HDL. These molecular interactions, although not fully characterized, could provide the ability of using the endogenous carrier systems for improving therapeutic outcomes.
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Affiliation(s)
- Michael J Hackett
- University of North Carolina, Chapel Hill, School of Pharmacy, Division of Molecular Pharmaceutics, USA
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27
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Caliph SM, Cao E, Bulitta JB, Hu L, Han S, Porter CJ, Trevaskis NL. The Impact of Lymphatic Transport on the Systemic Disposition of Lipophilic Drugs. J Pharm Sci 2013; 102:2395-408. [DOI: 10.1002/jps.23597] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 04/15/2013] [Accepted: 04/17/2013] [Indexed: 12/19/2022]
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Alqahtani S, Alayoubi A, Nazzal S, Sylvester PW, Kaddoumi A. Nonlinear absorption kinetics of self-emulsifying drug delivery systems (SEDDS) containing tocotrienols as lipophilic molecules: in vivo and in vitro studies. AAPS JOURNAL 2013; 15:684-95. [PMID: 23572242 DOI: 10.1208/s12248-013-9481-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 03/21/2013] [Indexed: 02/02/2023]
Abstract
Self-emulsifying drug delivery systems (SEDDS) have been broadly used to promote the oral absorption of poorly water-soluble drugs. The purpose of the current study was to evaluate the in vivo oral bioavailability of vitamin E isoforms, δ-tocotrienol (δ-T3) and γ-tocotrienol (γ-T3) administered as SEDDS, as compared to commercially available UNIQUE E® Tocotrienols capsules. Results from studies in rats showed that low dose treatment with δ-T3 (90%) and γ-T3 (10%) formulated SEDDS showed bioavailability of 31.5% and 332%, respectively. However, bioavailability showed a progressive decrease with increased treatment dose that displayed nonlinear absorption kinetics. Additional in vitro studies examining cellular uptake studies in Caco 2 cells revealed that the SEDDS formulation increased passive permeability of δ-T3 and γ-T3 by threefold as compared to the commercial capsule formulation. These studies also showed that free surfactants decreased δ-T3 and γ-T3 absorption. Specifically, combined treatment cremophor EL or labrasol with tocotrienols caused a 60-85% reduction in the cellular uptake of δ-T3 and γ-T3 and these effects appear to result from surfactant-induced inhibition of the δ-T3 and γ-T3 transport protein Niemann-Pick C1-like 1 (NPC1L1). In summary, results showed that SEDDS formulation significantly increases the absorption and bioavailability δ-T3 and γ-T3. However, this effect is self-limiting because treatment with increasing doses of SEDDS appears to be associated with a corresponding increase in free surfactants levels that directly and negatively impact tocotrienol transport protein function and results in nonlinear absorption kinetics and a progressive decrease in δ-T3 and γ-T3 absorption and bioavailability.
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Affiliation(s)
- Saeed Alqahtani
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, USA
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29
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A mouse model to evaluate the impact of species, sex, and lipid load on lymphatic drug transport. Pharm Res 2013; 30:3254-70. [PMID: 23430484 DOI: 10.1007/s11095-013-1000-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Accepted: 01/28/2013] [Indexed: 10/27/2022]
Abstract
PURPOSE To establish a lymph-cannulated mouse model, and use the model to investigate the impact of lipid dose on exogenous and endogenous lipid recruitment, and drug transport, into the lymph of males versus females. Finally, lymphatic transport and drug absorption in the mouse were compared to other pre-clinical models (rats/dogs). METHODS Animals were orally or intraduodenally administered 1.6 mg/kg halofantrine in low or high (14)C-lipid doses. For bioavailability calculation, animals were intravenuosly administered halofantrine. Lymph or blood samples were taken and halofantrine, triglyceride, phospholipid and (14)C-lipid concentrations measured. RESULTS Lymphatic lipid transport increased linearly with lipid dose, was similar across species and in male/female animals. In contrast, lymphatic transport of halofantrine differed markedly across species (dogs>rats>mice) and plateaued at higher lipid doses. Lower bioavailability appeared responsible for some species differences in halofantrine lymphatic transport; however other systematic differences were involved. CONCLUSIONS A contemporary lymph-cannulated mouse model was established which will enable investigation of lymphatic transport in transgenic and disease models. The current study found halofantrine absorption and lymphatic transport are reduced in small animals. Future analyses will investigate mechanisms involved, and if similar trends occur for other drugs, to establish the most relevant model(s) to predict lymphatic transport in humans.
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30
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Williams HD, Trevaskis NL, Charman SA, Shanker RM, Charman WN, Pouton CW, Porter CJH. Strategies to address low drug solubility in discovery and development. Pharmacol Rev 2013; 65:315-499. [PMID: 23383426 DOI: 10.1124/pr.112.005660] [Citation(s) in RCA: 1052] [Impact Index Per Article: 87.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Drugs with low water solubility are predisposed to low and variable oral bioavailability and, therefore, to variability in clinical response. Despite significant efforts to "design in" acceptable developability properties (including aqueous solubility) during lead optimization, approximately 40% of currently marketed compounds and most current drug development candidates remain poorly water-soluble. The fact that so many drug candidates of this type are advanced into development and clinical assessment is testament to an increasingly sophisticated understanding of the approaches that can be taken to promote apparent solubility in the gastrointestinal tract and to support drug exposure after oral administration. Here we provide a detailed commentary on the major challenges to the progression of a poorly water-soluble lead or development candidate and review the approaches and strategies that can be taken to facilitate compound progression. In particular, we address the fundamental principles that underpin the use of strategies, including pH adjustment and salt-form selection, polymorphs, cocrystals, cosolvents, surfactants, cyclodextrins, particle size reduction, amorphous solid dispersions, and lipid-based formulations. In each case, the theoretical basis for utility is described along with a detailed review of recent advances in the field. The article provides an integrated and contemporary discussion of current approaches to solubility and dissolution enhancement but has been deliberately structured as a series of stand-alone sections to allow also directed access to a specific technology (e.g., solid dispersions, lipid-based formulations, or salt forms) where required.
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Affiliation(s)
- Hywel D Williams
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
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31
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Caliph SM, Trevaskis NL, Charman WN, Porter CJ. Intravenous Dosing Conditions May Affect Systemic Clearance for Highly Lipophilic Drugs: Implications for Lymphatic Transport and Absolute Bioavailability Studies. J Pharm Sci 2012; 101:3540-6. [DOI: 10.1002/jps.23211] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 04/30/2012] [Accepted: 05/01/2012] [Indexed: 11/06/2022]
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Van Speybroeck M, Williams HD, Nguyen TH, Anby MU, Porter CJH, Augustijns P. Incomplete Desorption of Liquid Excipients Reduces the in Vitro and in Vivo Performance of Self-Emulsifying Drug Delivery Systems Solidified by Adsorption onto an Inorganic Mesoporous Carrier. Mol Pharm 2012; 9:2750-60. [DOI: 10.1021/mp300298z] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michiel Van Speybroeck
- Laboratory for Pharmacotechnology
and Biopharmacy, University of Leuven, Herestraat 49, Box 921, Campus
Gasthuisberg ON 2, B-3000 Leuven, Belgium
| | - Hywel D. Williams
- Drug Delivery, Disposition and
Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University,
381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Tri-Hung Nguyen
- Drug Delivery, Disposition and
Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University,
381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Mette U. Anby
- Drug Delivery, Disposition and
Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University,
381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Christopher J. H. Porter
- Drug Delivery, Disposition and
Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University,
381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Patrick Augustijns
- Laboratory for Pharmacotechnology
and Biopharmacy, University of Leuven, Herestraat 49, Box 921, Campus
Gasthuisberg ON 2, B-3000 Leuven, Belgium
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Uptake of phenothiazines by the harvested chylomicrons ex vivo model: Influence of self-nanoemulsifying formulation design. Eur J Pharm Biopharm 2011; 79:171-80. [DOI: 10.1016/j.ejpb.2011.01.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 01/27/2011] [Accepted: 01/31/2011] [Indexed: 11/19/2022]
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Yu HZ, Han SF, Li P, Zhu CL, Zhang XX, Gan L, Gan Y. An examination of the potential effect of lipids on the first-pass metabolism of the lipophilic drug anethol trithione. J Pharm Sci 2011; 100:5048-58. [PMID: 21766311 DOI: 10.1002/jps.22702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 06/06/2011] [Accepted: 06/21/2011] [Indexed: 12/16/2022]
Abstract
In this study, an examination of the potential effect of lipids on the first-pass metabolism of anethol trithione (ATT) was investigated. ATT is metabolized rapidly and extensively in liver into 4-hydroxy-anethole trithione (ATX), which was confirmed using the rat intestinal perfusion with the mesenteric cannulation model. Male Sprague-Dawley rats were orally administered of the lipid-based formulations (prepared by medium chain triglycerides (MCT)), the cyclodextrin formulation and the suspension formulation, respectively. For 6.75 mg/kg groups, ATX/ATT area under the plasma concentration-time curve (AUC) ratio decreased by 87% and 76% after administration of the MCT-based formulations and the cyclodextrin formulation, when compared with the suspension formulation (p < 0.05), respectively; for 2.25 mg/kg groups, it decreased by 53% in the MCT group when compared with the cyclodextrin group (p < 0.05). The saturation of pre-system metabolism of ATT was observed after administration of the MCT-based formulations and the cyclodextrin formulation, likely as a result of enhanced absorption and therefore presentation of higher drug concentrations to liver, when compared with the suspension formulation. A trend toward lower systemic metabolite to parent ratios was evident after administration of the lipid formulations, when compared with the cyclodextrin formulation; however, this was not statistically significant. Further studies on the potential for lipids to inhibit hepatic metabolism are therefore warranted.
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Affiliation(s)
- Hong-Zhen Yu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
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Srinivas NR. Blonanserin's interesting food-effect observations: is lymphatic transport involved? Eur J Clin Pharmacol 2011; 67:975-6. [PMID: 21468742 DOI: 10.1007/s00228-011-1039-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 03/16/2011] [Indexed: 01/20/2023]
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36
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Blei F. Literature Watch. Lymphat Res Biol 2010. [DOI: 10.1089/lrb.2010.8402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Trevaskis NL, Charman WN, Porter CJH. Targeted drug delivery to lymphocytes: a route to site-specific immunomodulation? Mol Pharm 2010; 7:2297-309. [PMID: 20958081 DOI: 10.1021/mp100259a] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Lymphocytes are central to the progression of autoimmune disease, transplant rejection, leukemia, lymphoma and lymphocyte-resident viral diseases such as HIV/AIDs. Strategies to target drug treatments to lymphocytes, therefore, represent an opportunity to enhance therapeutic outcomes in disease states where many current treatment regimes are incompletely effective and promote significant toxicities. Here we demonstrate that highly lipophilic drug candidates that preferentially access the intestinal lymphatics after oral administration show significantly enhanced access to lymphocytes leading to improved immunomodulatory activity. When coadministered with such drugs, lipids enhance lymphocyte targeting via a three tiered action: promotion of drug absorption from the gastrointestinal tract, enhancement of lymphatic drug transport and stimulation of lymphocyte recruitment into the lymphatics. This strategy has been exemplified using a highly lipophilic immunosuppressant (JWH015) where coadministration with selected lipids led to significant increases in lymphatic transport, lymphocyte targeting and IL-4 and IL-10 expression in CD4+ and CD8+ lymphocytes after ex vivo mitogen stimulation. In contrast, administration of a 2.5-fold higher dose of JWH015 in a formulation that did not stimulate lymph transport had no effect on antiinflammatory cytokine levels, in spite of equivalent drug exposure in the blood. The current data suggest that complementary drug design and delivery strategies that combine highly lipophilic, lymphotropic drug candidates with lymph-directing formulations provide enhanced selectivity, potency and therapeutic potential for drug candidates with lymphocyte associated targets.
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Affiliation(s)
- Natalie L Trevaskis
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria, Australia
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Trevaskis NL, Shanker RM, Charman WN, Porter CJH. The Mechanism of Lymphatic Access of Two Cholesteryl Ester Transfer Protein Inhibitors (CP524,515 and CP532,623) and Evaluation of Their Impact on Lymph Lipoprotein Profiles. Pharm Res 2010; 27:1949-64. [DOI: 10.1007/s11095-010-0199-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2010] [Accepted: 06/16/2010] [Indexed: 10/19/2022]
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