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Nyavanandi D, Mandati P, Narala S, Alzahrani A, Kolimi P, Vemula SK, Repka MA. Twin Screw Melt Granulation: A Single Step Approach for Developing Self-Emulsifying Drug Delivery System for Lipophilic Drugs. Pharmaceutics 2023; 15:2267. [PMID: 37765237 PMCID: PMC10534719 DOI: 10.3390/pharmaceutics15092267] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 08/26/2023] [Accepted: 08/30/2023] [Indexed: 09/29/2023] Open
Abstract
The current research aims to improve the solubility of the poorly soluble drug, i.e., ibuprofen, by developing self-emulsifying drug delivery systems (SEDDS) utilizing a twin screw melt granulation (TSMG) approach. Gelucire® 44/14, Gelucire® 48/16, and Transcutol® HP were screened as suitable excipients for developing the SEDDS formulations. Initially, liquid SEDDS (L-SEDDS) were developed with oil concentrations between 20-50% w/w and surfactant to co-surfactant ratios of 2:1, 4:1, 6:1. The stable formulations of L-SEDDS were transformed into solid SEDDS (S-SEDDS) using a suitable adsorbent carrier and compressed into tablets (T-SEDDS). The S-SEDDS has improved flow, drug release profiles, and permeability compared to pure drugs. The existence of the drug in an amorphous state was confirmed by differential scanning calorimetry (DSC) and powder X-ray diffraction analysis (PXRD). The formulations with 20% w/w and 30% w/w of oil concentration and a 4:1 ratio of surfactant to co-surfactant have resulted in a stable homogeneous emulsion with a globule size of 14.67 ± 0.23 nm and 18.54 ± 0.55 nm. The compressed tablets were found stable after six months of storage at accelerated and long-term conditions. This shows the suitability of the TSMG approach as a single-step continuous manufacturing process for developing S-SEDDS formulations.
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Affiliation(s)
- Dinesh Nyavanandi
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (D.N.); (P.M.); (S.N.); (A.A.); (P.K.); (S.K.V.)
| | - Preethi Mandati
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (D.N.); (P.M.); (S.N.); (A.A.); (P.K.); (S.K.V.)
| | - Sagar Narala
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (D.N.); (P.M.); (S.N.); (A.A.); (P.K.); (S.K.V.)
| | - Abdullah Alzahrani
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (D.N.); (P.M.); (S.N.); (A.A.); (P.K.); (S.K.V.)
| | - Praveen Kolimi
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (D.N.); (P.M.); (S.N.); (A.A.); (P.K.); (S.K.V.)
| | - Sateesh Kumar Vemula
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (D.N.); (P.M.); (S.N.); (A.A.); (P.K.); (S.K.V.)
| | - Michael A. Repka
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (D.N.); (P.M.); (S.N.); (A.A.); (P.K.); (S.K.V.)
- Pii Center for Pharmaceutical Technology, The University of Mississippi, Oxford, MS 38677, USA
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2
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Hashem R, Kazemi S, Stommel M, Cheng LK, Xu W. SoRSS: A Soft Robot for Bio-Mimicking Stomach Anatomy and Motility. Soft Robot 2022. [DOI: 10.1089/soro.2021.0202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Ryman Hashem
- Department of Mechanical and Mechatronics Engineering, The University of Auckland, Auckland, New Zealand
| | - Shahab Kazemi
- Department of Mechanical and Mechatronics Engineering, The University of Auckland, Auckland, New Zealand
- Riddet Institute Centre of Research Excellence (CoRE), Palmerston North, New Zealand
| | - Martin Stommel
- Riddet Institute Centre of Research Excellence (CoRE), Palmerston North, New Zealand
- Department of Electrical and Electronic Engineering, Auckland University of Technology, Auckland, New Zealand
| | - Leo K. Cheng
- Riddet Institute Centre of Research Excellence (CoRE), Palmerston North, New Zealand
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Weiliang Xu
- Department of Mechanical and Mechatronics Engineering, The University of Auckland, Auckland, New Zealand
- Riddet Institute Centre of Research Excellence (CoRE), Palmerston North, New Zealand
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3
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Afifi SM, Ammar NM, Kamel R, Esatbeyoglu T, Hassan HA. β-Sitosterol Glucoside-Loaded Nanosystem Ameliorates Insulin Resistance and Oxidative Stress in Streptozotocin-Induced Diabetic Rats. Antioxidants (Basel) 2022; 11:1023. [PMID: 35624887 PMCID: PMC9137832 DOI: 10.3390/antiox11051023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/18/2022] [Accepted: 05/19/2022] [Indexed: 12/16/2022] Open
Abstract
β-Sitosterol glucoside (SG), isolated from Senecio petasitis (Family Asteraceae), was loaded in self-nanoemulsifying drug delivery systems (SEDDS) in a trial to enhance its solubility and biological effect. Various co-surfactants were tested to prepare a successful SEDDS. The selected SG-loaded SEDDS had a droplet size of 134 ± 15.2 nm with a homogenous distribution (polydispersity index 0.296 ± 0.02). It also demonstrated a significant augmentation of SG in vitro release by 4-fold compared to the free drug suspension. The in vivo insulin sensitivity and antidiabetic effect of the prepared SG-loaded SEDDS were further assessed in streptozotocin-induced hyperglycemic rats. The hypoglycemic effect of SG-loaded nanosystem was evidenced by decreased serum glucose and insulin by 63.22% and 53.11%, respectively. Homeostasis model assessment-insulin resistance (HOMA-IR) index demonstrated a significant reduction by 5.4-fold in the diabetic group treated by SG-loaded nanosystem and exhibited reduced glucagon level by 40.85%. In addition, treatment with SG-loaded nanosystem significantly decreased serum MDA (malondialdehyde) and increased catalase levels by 38.31% and 64.45%, respectively. Histopathological investigations also supported the protective effect of SG-loaded nanosystem on the pancreas. The promising ability of SG-loaded nanosystem to ameliorate insulin resistance, protect against oxidative stress, and restore pancreatic β-cell secretory function warrants its inclusion in further studies during diabetes progression.
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Affiliation(s)
- Sherif M. Afifi
- Pharmacognosy Department, Faculty of Pharmacy, University of Sadat City, Sadat City 32897, Egypt
| | - Naglaa M. Ammar
- Therapeutic Chemistry Department, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, Egypt; (N.M.A.); (H.A.H.)
| | - Rabab Kamel
- Pharmaceutical Technology Department, National Research Centre, Cairo 12622, Egypt;
| | - Tuba Esatbeyoglu
- Department of Food Development and Food Quality, Institute of Food Science and Human Nutrition, Gottfried Wilhelm Leibniz University Hannover, Am Kleinen Felde 30, 30167 Hannover, Germany
| | - Heba A. Hassan
- Therapeutic Chemistry Department, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, Egypt; (N.M.A.); (H.A.H.)
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4
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He J, Zong Y, Wang R, Feng W, Chen Z, Wang T. Simultaneous Refolding of Wheat Proteins and Soy Proteins Forming Novel Antibiotic Superstructures by Carrying Eugenol. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7698-7708. [PMID: 34180673 DOI: 10.1021/acs.jafc.1c01210] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Essential oils (EOs) are natural antibiotic chemicals for food preservation; however, their use is challenging due to low solubility and high volatility. In this study, hybrid protein particles with hydrophobic interiors and colloidal stability were designed to carry hydrophobic eugenol with enhanced storage and thermal stability. Stable self-emulsified delivery systems (SEDSs) were facilitated by simply mixing eugenol with wheat proteins (WPs) and soy proteins (SPs) at pH 12 prior to neutralization. This strategy enabled protein co-folding that permitted the entrapment of eugenol with a high entrapment capacity of ca. 500 mg/g protein. Control over the SP/WP ratios contributed to tunable microstructural conformations, which in turn modulated the stability of SEDSs with prominent bacteriostatic properties against fungi when applied to rice cakes during long-term storage. These results underline the feasibility of properly utilizing EOs by binary protein structures, where the antibacterial properties of EOs could be manipulated coherently.
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Affiliation(s)
- Jian He
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
- Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yucheng Zong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
- Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Ren Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
- Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Wei Feng
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
- Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Zhengxing Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
- Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Tao Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
- Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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5
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Dang Y, Liu Y, Hashem R, Bhattacharya D, Allen J, Stommel M, Cheng LK, Xu W. SoGut: A Soft Robotic Gastric Simulator. Soft Robot 2020; 8:273-283. [PMID: 32559391 DOI: 10.1089/soro.2019.0136] [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] [Indexed: 12/11/2022] Open
Abstract
The human stomach breaks down and transports food by coordinated radial contractions of the gastric walls. The radial contractions periodically propagate through the stomach and constitute the peristaltic contractions, also called the gastric motility. The force, amplitude, and frequency of peristaltic contractions are relevant to massaging and transporting the food contents in the gastric lumen. However, existing gastric simulators have not faithfully replicated gastric motility. Herein, we report a soft robotic gastric simulator (SoGut) that emulates peristaltic contractions in an anatomically realistic way. SoGut incorporates an array of circular air chambers that generate radial contractions. The design and fabrication of SoGut leverages principles from the soft robotics field, which features compliance and adaptability. We studied the force and amplitude of the contractions when the lumen of SoGut was empty or filled with contents of different viscosity. We examined the contracting force using manometry. SoGut exhibited a similar range of contracting force as the human stomach reported in the literature. Besides, we investigated the amplitude of the contractions through videofluoroscopy where the contraction ratio was derived. The contraction ratio as a function of inflation pressure is found to match the observations of in vivo situations. We demonstrated that SoGut can achieve in vitro peristaltic contractions by coordinating the inflation sequence of multiple air chambers. It exhibited the functions to massage and transport the food contents. SoGut can simulate the physiological motions of the human stomach to advance research of digestion.
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Affiliation(s)
- Yu Dang
- Department of Mechanical Engineering, The University of Auckland, Auckland, New Zealand.,The Medical Technologies Centre of Research Excellence, Auckland, New Zealand
| | - Yuanxiang Liu
- Department of Mechanical Engineering, The University of Auckland, Auckland, New Zealand.,School of Mechanical and Electrical Technology, Wuxi Vocational Institute of Commerce, Jiangsu, China
| | - Ryman Hashem
- Department of Mechanical Engineering, The University of Auckland, Auckland, New Zealand.,The Medical Technologies Centre of Research Excellence, Auckland, New Zealand
| | - Dipankar Bhattacharya
- Department of Mechanical Engineering, The University of Auckland, Auckland, New Zealand.,The Riddet Institute, Palmerston North, New Zealand
| | - Jacqueline Allen
- Department of Surgery, The University of Auckland, Auckland, New Zealand
| | - Martin Stommel
- The Medical Technologies Centre of Research Excellence, Auckland, New Zealand.,Department of Electrical and Electronic Engineering, Auckland University of Technology, Auckland, New Zealand
| | - Leo K Cheng
- The Medical Technologies Centre of Research Excellence, Auckland, New Zealand.,The Riddet Institute, Palmerston North, New Zealand.,Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Weiliang Xu
- Department of Mechanical Engineering, The University of Auckland, Auckland, New Zealand.,The Medical Technologies Centre of Research Excellence, Auckland, New Zealand.,The Riddet Institute, Palmerston North, New Zealand
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6
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Park H, Ha ES, Kim MS. Current Status of Supersaturable Self-Emulsifying Drug Delivery Systems. Pharmaceutics 2020; 12:pharmaceutics12040365. [PMID: 32316199 PMCID: PMC7238279 DOI: 10.3390/pharmaceutics12040365] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/09/2020] [Accepted: 04/14/2020] [Indexed: 12/13/2022] Open
Abstract
Self-emulsifying drug delivery systems (SEDDSs) are a vital strategy to enhance the bioavailability (BA) of formulations of poorly water-soluble compounds. However, these formulations have certain limitations, including in vivo drug precipitation, poor in vitro in vivo correlation due to a lack of predictive in vitro tests, issues in handling of liquid formulation, and physico-chemical instability of drug and/or vehicle components. To overcome these limitations, which restrict the potential usage of such systems, the supersaturable SEDDSs (su-SEDDSs) have gained attention based on the fact that the inclusion of precipitation inhibitors (PIs) within SEDDSs helps maintain drug supersaturation after dispersion and digestion in the gastrointestinal tract. This improves the BA of drugs and reduces the variability of exposure. In addition, the formulation of solid su-SEDDSs has helped to overcome disadvantages of liquid or capsule dosage form. This review article discusses, in detail, the current status of su-SEDDSs that overcome the limitations of conventional SEDDSs. It discusses the definition and range of su-SEDDSs, the principle mechanisms underlying precipitation inhibition and enhanced in vivo absorption, drug application cases, biorelevance in vitro digestion models, and the development of liquid su-SEDDSs to solid dosage forms. This review also describes the effects of various physiological factors and the potential interactions between PIs and lipid, lipase or lipid digested products on the in vivo performance of su-SEDDSs. In particular, several considerations relating to the properties of PIs are discussed from various perspectives.
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7
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DHA and EPA nanoemulsions prepared by the low-energy emulsification method: Process factors influencing droplet size and physicochemical stability. Food Res Int 2019; 121:359-366. [DOI: 10.1016/j.foodres.2019.03.059] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 03/12/2019] [Accepted: 03/26/2019] [Indexed: 12/22/2022]
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8
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Berthelsen R, Klitgaard M, Rades T, Müllertz A. In vitro digestion models to evaluate lipid based drug delivery systems; present status and current trends. Adv Drug Deliv Rev 2019; 142:35-49. [PMID: 31265861 DOI: 10.1016/j.addr.2019.06.010] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 06/07/2019] [Accepted: 06/28/2019] [Indexed: 12/31/2022]
Abstract
During the past two decades, a range of in vitro models simulating the digestion processes occurring in the stomach and small intestine have been developed to characterize lipid based drug delivery systems (LbDDSs). This review describes the presently existing range of in vitro digestion models and their use in the field of oral drug delivery. The models are evaluated in terms of their suitability to assess LbDDSs, and their ability to produce in vitro - in vivo correlations (IVIVCs). While the pH-stat lipolysis model is by far the most commonly utilized in vitro digestion model in relation to characterizing LbDDSs, a series of recent studies have shown a lack of IVIVCs limiting its future use. Presently, no single in vitro digestion model exists which is able to predict the in vivo performance of various LbDDSs. However, recent research has shown the potential of combined digestion-permeation models as well as species specific digestion models.
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Affiliation(s)
- Ragna Berthelsen
- University of Copenhagen, Department of Pharmacy, Universitetsparken 2, 2100 Copenhagen, Denmark.
| | - Mette Klitgaard
- University of Copenhagen, Department of Pharmacy, Universitetsparken 2, 2100 Copenhagen, Denmark.
| | - Thomas Rades
- University of Copenhagen, Department of Pharmacy, Universitetsparken 2, 2100 Copenhagen, Denmark.
| | - Anette Müllertz
- University of Copenhagen, Department of Pharmacy, Universitetsparken 2, 2100 Copenhagen, Denmark.
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9
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Mahmood A, Bernkop-Schnürch A. SEDDS: A game changing approach for the oral administration of hydrophilic macromolecular drugs. Adv Drug Deliv Rev 2019; 142:91-101. [PMID: 29981355 DOI: 10.1016/j.addr.2018.07.001] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/22/2018] [Accepted: 07/02/2018] [Indexed: 12/11/2022]
Abstract
Since the development of self-emulsifying drug delivery systems (SEDDS) in 1980's, they attract the attention of researchers in order to confront the challenge of poor water-solubility of orally given drugs. Within recent years, SEDDS were also discovered for oral administration of hydrophilic macromolecular drugs such as peptides, proteins, polysaccharides and pDNA. Due to hydrophobic ion pairing (HIP) with oppositely charged lipophilic auxiliary agents the resulting complexes can be incorporated in the lipophilic phase of SEDDS. Depending on the solubility of the complex in the SEDDS pre-concentrate and in the release medium drug release can be adjusted on purpose by choosing more or less lipophilic auxiliary agents in appropriate quantities for HIP. Within the oily droplets formed in the GI-tract drugs are protected towards degradation by proteases and nucleases and thiol-disulfide exchange reactions with dietary proteins. The oily droplets can be made mucoadhesive or highly mucus permeating depending on their target site. Furthermore, even their cellular uptake properties can be tuned by adjusting their zeta potential or decorating them with cell penetrating peptides. The potential of SEDDS for oral administration of hydrophilic macromolecular drugs could meanwhile be demonstrated via various in vivo studies showing a bioavailability at least in the single digit percentage range. Owing to these properties advanced SEDDS turned out to be a game changing approach for the oral administration of hydrophilic macromolecular drugs.
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Affiliation(s)
- Arshad Mahmood
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria; Department of Pharmacy, COMSATS Institute of Information Technology Abbottabad, Abbottabad 22060, Pakistan
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria.
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10
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Sassene PJ, Fanø M, Mu H, Rades T, Aquistapace S, Schmitt B, Cruz-Hernandez C, Wooster TJ, Müllertz A. Comparison of lipases for in vitro models of gastric digestion: lipolysis using two infant formulas as model substrates. Food Funct 2018; 7:3989-3998. [PMID: 27711870 DOI: 10.1039/c6fo00158k] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aim of this study was to find a lipase suitable as a surrogate for Human Gastric Lipase (HGL), since the development of predictive gastrointestinal lipolysis models are hampered by the lack of a lipase with similar digestive properties as HGL. Three potential surrogates for HGL; Rhizopus Oryzae Lipase (ROL), Rabbit Gastric Lipase (RGL) and recombinant HGL (rHGL), were used to catalyze the in vitro digestion of two infant formulas (a medium-chain triacylglyceride enriched formula (MC-IF) and a predominantly long-chain triacylglyceride formula (LC-IF)). Digesta were withdrawn after 0, 5, 15, 30, 60 min of gastric digestion and after 90 or 180 min of intestinal digestion with or without the presence of pancreatic enzymes, respectively. The digesta were analyzed by scanning electron microscopy and gas chromatography to quantify the release of fatty acids (FAs). Digestions of both formulas, catalyzed by ROL, showed that the extent of gastric digestion was higher than expected from previously published in vivo data. ROL was furthermore insensitive to FA chain length and all FAs were released at the same pace. RGL and rHGL favoured the release of MC-FAs in both formulas, but rHGL did also release some LC-FAs during digestion of MC-IF, whereas RGL only released MC-FAs. Digestion of a MC-IF by HGL in vivo showed that MC-FAs are preferentially released, but some LC-FAs are also released. Thus of the tested lipase rHGL replicated the digestive properties of HGL the best and is a suitable surrogate for HGL for use in in vitro gastrointestinal lipolysis models.
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Affiliation(s)
- P J Sassene
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - M Fanø
- Bioneer:Farma, University of Copenhagen, Copenhagen, Denmark
| | - H Mu
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - T Rades
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | | | - B Schmitt
- Nestlé Research Center, Lausanne, Switzerland
| | | | - T J Wooster
- Nestlé Research Center, Lausanne, Switzerland
| | - A Müllertz
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. and Bioneer:Farma, University of Copenhagen, Copenhagen, Denmark
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11
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Lipids in the Stomach – Implications for the Evaluation of Food Effects on Oral Drug Absorption. Pharm Res 2018; 35:55. [DOI: 10.1007/s11095-017-2289-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 10/20/2017] [Indexed: 10/18/2022]
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12
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Schultz HB, Thomas N, Rao S, Prestidge CA. Supersaturated silica-lipid hybrids (super-SLH): An improved solid-state lipid-based oral drug delivery system with enhanced drug loading. Eur J Pharm Biopharm 2017; 125:13-20. [PMID: 29277724 DOI: 10.1016/j.ejpb.2017.12.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 12/19/2017] [Accepted: 12/21/2017] [Indexed: 01/01/2023]
Abstract
The method of supersaturation for achieving high drug loads in lipid-based formulations is under exploited and relatively unexplored, especially in the case of solid-state lipid-based formulations. Silica-lipid hybrids are solid-state lipid-based formulations designed for improving the oral delivery of poorly water-soluble drugs. However, their application to compounds of low potency and requiring large doses is limited by their low drug loading capacity. Here, an innovative technique to fabricate supersaturated silica-lipid hybrid formulations (super-SLH) has been established and the relationship between drug load and performance investigated. Using the model poorly water-soluble drug, ibuprofen, super-SLH was fabricated possessing drug loads ranging from 8 to 44% w/w, i.e. greater than the previously developed standard ibuprofen silica-lipid hybrids (5.6% w/w). Drug crystallinity of the encapsulated ibuprofen ranged from non-crystalline to part-crystalline with an increase in drug load. Super-SLH achieved improved rates and extents of dissolution when compared to pure ibuprofen, regardless of the drug load. The percentage increase in dissolution extent at 60 min varied from 200 to 600%. The results of the current study indicate that supersaturation greatly improves drug loading and that 16-25% w/w is the optimum loading level which retains optimal dissolution behaviour for the oral delivery of ibuprofen, which has the potential to be translated to other poorly water-soluble drugs.
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Affiliation(s)
- Hayley B Schultz
- School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, Adelaide, South Australia 5001, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Australia
| | - Nicky Thomas
- School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, Adelaide, South Australia 5001, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Australia
| | - Shasha Rao
- School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, Adelaide, South Australia 5001, Australia
| | - Clive A Prestidge
- School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, Adelaide, South Australia 5001, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Australia.
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13
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Planchette C, Mercuri A, Arcangeli L, Kriechbaum M, Laggner P. Self-emulsification of Lipidic Drug Delivery System in Pure Water and in Concentrated Glycerol Solution. AAPS PharmSciTech 2017; 18:3053-3063. [PMID: 28516413 DOI: 10.1208/s12249-017-0785-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/14/2017] [Indexed: 11/30/2022] Open
Abstract
Self-emulsifying drug delivery systems (SEDDS), often intended for oral delivery, are normally explored in biorelevant aqueous media. The high complexity of these multi-component systems leaves the understanding of self-emulsification poor, hindering formulation rationalization. In this work, we aimed to fill this gap by studying the effects of glycerol on the self-emulsification of a ternary component formulation made of 20% w/w Tween 80, 15% w/w Span 80, and 65% w/w Captex 300 Low C6. The behavior of SEDDS in pure water and a binary mixture of water and glycerol (58.8% w/w) were investigated by optical microscopy, SAXS (small angle X-ray scattering), dynamic light scattering, and surface tension measurements. The presence of glycerol, at 58.8% w/w, altered the self-emulsification behavior by suppressing the formation of lamellar structures observed in the presence of water, reducing the droplet mean diameter from 0.2 to 0.1 μm and changing the mechanism of self-emulsification. As co-surfactant, glycerol may intercalate within the polyoxyethylene chains of the surfactant at the palisade layer, increasing the interface flexibility and expanding it. Since no free water is available at the investigated glycerol concentration, glycerol, which is also a co-solvent, may additionally modify long-range interactions by reducing Van-der-Waals attractions or giving rise to repulsive surface-solvent mediated forces of entropic origin. These effects could be exploited to rationalize SEDDS formulations, widening their use within the pharmaceutical industry.
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14
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Jiao X, Li B, Zhang Q, Gao N, Zhang X, Meng X. Effect of
in vitro
‐simulated gastrointestinal digestion on the stability and antioxidant activity of blueberry polyphenols and their cellular antioxidant activity towards HepG2 cells. Int J Food Sci Technol 2017. [DOI: 10.1111/ijfs.13516] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Xinyao Jiao
- College of Food Science Shenyang Agricultural University Dongling Road 120 Shenhe District Shenyang China
| | - Bin Li
- College of Food Science Shenyang Agricultural University Dongling Road 120 Shenhe District Shenyang China
| | - Qi Zhang
- College of Food Science Shenyang Agricultural University Dongling Road 120 Shenhe District Shenyang China
| | - Ningxuan Gao
- College of Food Science Shenyang Agricultural University Dongling Road 120 Shenhe District Shenyang China
| | - Xiuyan Zhang
- College of Science Shenyang Agricultural University Dongling Road 120 Shenhe District Shenyang China
| | - Xianjun Meng
- College of Food Science Shenyang Agricultural University Dongling Road 120 Shenhe District Shenyang China
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15
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Kaur G, Mehta S. Developments of Polysorbate (Tween) based microemulsions: Preclinical drug delivery, toxicity and antimicrobial applications. Int J Pharm 2017. [DOI: 10.1016/j.ijpharm.2017.06.059] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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16
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17
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Riehm DA, Rokke DJ, Paul PG, Lee HS, Vizanko BS, McCormick AV. Dispersion of oil into water using lecithin-Tween 80 blends: The role of spontaneous emulsification. J Colloid Interface Sci 2017; 487:52-59. [DOI: 10.1016/j.jcis.2016.10.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 10/03/2016] [Accepted: 10/04/2016] [Indexed: 12/23/2022]
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18
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Chen L, Xu Y, Fan T, Liao Z, Wu P, Wu X, Chen XD. Gastric emptying and morphology of a ‘near real’ in vitro human stomach model (RD-IV-HSM). J FOOD ENG 2016. [DOI: 10.1016/j.jfoodeng.2016.02.025] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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19
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Mason LM, Chessa S, Huatan H, Storey DE, Gupta P, Burley J, Melia CD. Use of the Dynamic Gastric Model as a tool for investigating fed and fasted sensitivities of low polymer content hydrophilic matrix formulations. Int J Pharm 2016; 510:210-20. [DOI: 10.1016/j.ijpharm.2016.06.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 06/09/2016] [Accepted: 06/10/2016] [Indexed: 10/21/2022]
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20
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Kuentz M, Holm R, Elder DP. Methodology of oral formulation selection in the pharmaceutical industry. Eur J Pharm Sci 2016; 87:136-63. [DOI: 10.1016/j.ejps.2015.12.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/24/2015] [Accepted: 12/06/2015] [Indexed: 12/30/2022]
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21
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Evaluating Oral Drug Delivery Systems: Digestion Models. ADVANCES IN DELIVERY SCIENCE AND TECHNOLOGY 2016. [DOI: 10.1007/978-1-4939-4029-5_25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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22
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Perazzo A, Preziosi V, Guido S. Phase inversion emulsification: Current understanding and applications. Adv Colloid Interface Sci 2015; 222:581-99. [PMID: 25632889 DOI: 10.1016/j.cis.2015.01.001] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 01/05/2015] [Accepted: 01/05/2015] [Indexed: 12/11/2022]
Abstract
This review is addressed to the phase inversion process, which is not only a common, low-energy route to make stable emulsions for a variety of industrial products spanning from food to pharmaceuticals, but can also be an undesired effect in some applications, such as crude oil transportation in pipelines. Two main ways to induce phase inversion are described in the literature, i.e., phase inversion composition (PIC or catastrophic) and phase inversion temperature (PIT or transitional). In the former, starting from one phase (oil or water) with surfactants, the other phase is more or less gradually added until it reverts to the continuous phase. In PIT, phase inversion is driven by a temperature change without varying system composition. Given its industrial relevance and scientific challenge, phase inversion has been the subject of a number of papers in the literature, including extensive reviews. Due to the variety of applications and the complexity of the problem, most of the publications have been focused either on the phase behavior or the interfacial properties or the mixing process of the two phases. Although all these aspects are quite important in studying phase inversion and much progress has been done on this topic, a comprehensive picture is still lacking. In particular, the general mechanisms governing the inversion phenomenon have not been completely elucidated and quantitative predictions of the phase inversion point are limited to specific systems and experimental conditions. Here, we review the different approaches on phase inversion and highlight some related applications, including future and emerging perspectives.
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23
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Verma S, Singh SK, Verma PRP. Fabrication of lipidic nanocarriers of loratadine for facilitated intestinal permeation using multivariate design approach. Drug Dev Ind Pharm 2015; 42:288-306. [DOI: 10.3109/03639045.2015.1052078] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Samridhi Verma
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India
| | - Sandeep Kumar Singh
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India
| | - Priya Ranjan Prasad Verma
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India
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24
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Bahloul B, Lassoued MA, Seguin J, Lai-Kuen R, Dhotel H, Sfar S, Mignet N. Self-emulsifying drug delivery system developed by the HLB-RSM approach: Characterization by transmission electron microscopy and pharmacokinetic study. Int J Pharm 2015; 487:56-63. [PMID: 25870031 DOI: 10.1016/j.ijpharm.2015.04.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 04/02/2015] [Accepted: 04/09/2015] [Indexed: 11/29/2022]
Abstract
Recently, we developed a new approach to rationalize an optimized design for self-emulsifying drug delivery system (SEDDS) by introducing the HLB and the response surface as determinant factors in SEDDS development. The aim of this current paper is to assess the suitability of this HLB-RSM approach to enhance the oral bioavailability of BCS class II compounds using fenofibrate as drug model. Eight SEDDS formulations (I→VIII) were pre-selected regarding their self-emulsification capacity and their effect on increasing in vitro drug release. They were firstly evaluated for their thermodynamic stability and zeta potential. Unstable SEDDS were discarded meanwhile the structural morphology of the stable ones (I, VI and VIII) was characterized using transmission electron microscopy (TEM). A pharmacokinetic study was then undertaken on male BALB/cJRj mices. The in vivo results showed a significant increase of fenofibrate absorption for all the three stable SEDDS formulations compared to the commercialized form, (LIPANTHYL micronized(®) (p<0.05)). The highest enhancement was recorded for SEDDS I, where AUC and Cmax values respectively increased by 2 and 4.4 folds. This justifies the fact that HLB-RSM approach could be considered as a promising method for the development of efficient and highly stable SEDDS aiming to increase the poor bioavailability of BCS class II molecules.
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Affiliation(s)
- Badr Bahloul
- Laboratory of Pharmaceutical, Chemical and Pharmacological Drug Development LR12ES09, Faculty of Pharmacy, University of Monastir, Tunisia.
| | - Mohamed Ali Lassoued
- Laboratory of Pharmaceutical, Chemical and Pharmacological Drug Development LR12ES09, Faculty of Pharmacy, University of Monastir, Tunisia
| | - Johanne Seguin
- CNRS UMR 8258 - Inserm U1022, Paris Descartes University, Paris F-75006, France
| | - René Lai-Kuen
- Technical Platform of the IFR71/IMTCE-Cellular and Molecular Imaging, Faculty of Pharmacy, Paris Descartes University, Paris, France
| | - Hélène Dhotel
- CNRS UMR 8258 - Inserm U1022, Paris Descartes University, Paris F-75006, France
| | - Souad Sfar
- Laboratory of Pharmaceutical, Chemical and Pharmacological Drug Development LR12ES09, Faculty of Pharmacy, University of Monastir, Tunisia
| | - Nathalie Mignet
- CNRS UMR 8258 - Inserm U1022, Paris Descartes University, Paris F-75006, France
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25
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Lefebvre DE, Venema K, Gombau L, Valerio LG, Raju J, Bondy GS, Bouwmeester H, Singh RP, Clippinger AJ, Collnot EM, Mehta R, Stone V. Utility of models of the gastrointestinal tract for assessment of the digestion and absorption of engineered nanomaterials released from food matrices. Nanotoxicology 2014; 9:523-42. [PMID: 25119418 DOI: 10.3109/17435390.2014.948091] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Engineered metal/mineral, lipid and biochemical macromolecule nanomaterials (NMs) have potential applications in food. Methodologies for the assessment of NM digestion and bioavailability in the gastrointestinal tract are nascent and require refinement. A working group was tasked by the International Life Sciences Institute NanoRelease Food Additive project to review existing models of the gastrointestinal tract in health and disease, and the utility of these models for the assessment of the uptake of NMs intended for food. Gastrointestinal digestion and absorption could be addressed in a tiered approach using in silico computational models, in vitro non-cellular fluid systems and in vitro cell culture models, after which the necessity of ex vivo organ culture and in vivo animal studies can be considered. Examples of NM quantification in gastrointestinal tract fluids and tissues are emerging; however, few standardized analytical techniques are available. Coupling of these techniques to gastrointestinal models, along with further standardization, will further strengthen methodologies for risk assessment.
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Affiliation(s)
- David E Lefebvre
- Regulatory Toxicology Research Division, Food Directorate, Health Canada , Ottawa , Canada
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26
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Nokhodchi A, Asare-Addo K. Drug release from matrix tablets: physiological parameters and the effect of food. Expert Opin Drug Deliv 2014; 11:1401-18. [DOI: 10.1517/17425247.2014.924498] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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27
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Kostewicz ES, Abrahamsson B, Brewster M, Brouwers J, Butler J, Carlert S, Dickinson PA, Dressman J, Holm R, Klein S, Mann J, McAllister M, Minekus M, Muenster U, Müllertz A, Verwei M, Vertzoni M, Weitschies W, Augustijns P. In vitro models for the prediction of in vivo performance of oral dosage forms. Eur J Pharm Sci 2014; 57:342-66. [DOI: 10.1016/j.ejps.2013.08.024] [Citation(s) in RCA: 248] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 08/07/2013] [Accepted: 08/13/2013] [Indexed: 11/17/2022]
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28
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Chessa S, Huatan H, Levina M, Mehta R, Ferrizzi D, Rajabi-Siahboomi A. Application of the Dynamic Gastric Model to evaluate the effect of food on the drug release characteristics of a hydrophilic matrix formulation. Int J Pharm 2014; 466:359-67. [DOI: 10.1016/j.ijpharm.2014.03.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 03/07/2014] [Accepted: 03/16/2014] [Indexed: 12/25/2022]
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29
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Thomas N, Richter K, Pedersen TB, Holm R, Müllertz A, Rades T. In vitro lipolysis data does not adequately predict the in vivo performance of lipid-based drug delivery systems containing fenofibrate. AAPS JOURNAL 2014; 16:539-49. [PMID: 24687210 DOI: 10.1208/s12248-014-9589-4] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 03/11/2014] [Indexed: 11/30/2022]
Abstract
The present study investigated the utility of in vitro lipolysis performance indicators drug solubilization and maximum supersaturation ratio (SR(M)) for their predictive use for the in vivo performance in a minipig model. The commercial Lipanthyl formulation and a series of LbDDS based on identical self-nanoemulsifying drug delivery systems (SNEDDS) containing 200 mg of fenofibrate, either dissolved or suspended, were subjected to combined gastric (pH 2) and intestinal (pH 6.5) in vitro lipolysis. Based on the solubilization profiles and SRM the rank-order SNEDDS (75% drug load) > super-SNEDDS (150% drug load, dissolved) = SNEDDS suspension (150% drug load, partially suspended) > Lipanthyl was established, with an increased likelihood of drug precipitation above SR(M) > 3. The in vitro performance, however, was not reproduced in vivo in a minipig model as the mean plasma concentration over time curves of all LbDDS were comparable, independent of the initial physical state of the drug. There was no correlation between the area under the solubilization-time curves (AUC(in vitro)) of the intestinal step and the AUC(in vivo). The study suggests careful interpretation of in vitro performance criteria and revision of LbDDS optimization towards increased solubilization.
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Affiliation(s)
- Nicky Thomas
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen, 2100, Denmark
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30
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Dokania S, Joshi AK. Self-microemulsifying drug delivery system (SMEDDS)--challenges and road ahead. Drug Deliv 2014; 22:675-90. [PMID: 24670091 DOI: 10.3109/10717544.2014.896058] [Citation(s) in RCA: 170] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Self-microemulsifying drug delivery system (SMEDDS) has emerged as a vital strategy to formulate poor water soluble compounds for bioavailability enhancement. However, certain limitations are associated with SMEDDS formulations which include in vivo drug precipitation, formulation handling issues, limited lymphatic uptake, lack of predictive in vitro tests and oxidation of unsaturated fatty acids. These limitations restrict their potential usage. Inclusion of polymers or precipitation inhibitors within lipid based formulations helps to maintain drug supersaturation after dispersion. This, thereby, improves the bioavailability and reduces the variability on exposure. Also, formulating solid SMEDDS helps to overcome liquid handling and stability problems. Usage of medium chain triglycerides (MCT) and suitable antioxidants to minimize oxidation of unsaturated fatty acids are few of the steps to overcome the limitations associated with SMEDDS. The review discussed here, in detail, the limitations of SMEDDS and suitable measures that can be taken to overcome them.
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Affiliation(s)
- Shambhu Dokania
- a Department of Pharmaceutics , NIPER Ahmedabad , C/o B.V. Patel PERD Centre , Ahmedabad , Gujarat , India
| | - Amita K Joshi
- a Department of Pharmaceutics , NIPER Ahmedabad , C/o B.V. Patel PERD Centre , Ahmedabad , Gujarat , India
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31
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Agrawal AG, Kumar A, Gide PS. Formulation of solid self-nanoemulsifying drug delivery systems usingN-methyl pyrrolidone as cosolvent. Drug Dev Ind Pharm 2014; 41:594-604. [DOI: 10.3109/03639045.2014.886695] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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32
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Kamel R, Basha M. Preparation and in vitro evaluation of rutin nanostructured liquisolid delivery system. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.bfopcu.2013.08.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Koziolek M, Garbacz G, Neumann M, Weitschies W. Simulating the Postprandial Stomach: Biorelevant Test Methods for the Estimation of Intragastric Drug Dissolution. Mol Pharm 2013; 10:2211-21. [DOI: 10.1021/mp300607e] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Mirko Koziolek
- Institute of Pharmacy, Department
of Biopharmaceutics and Pharmaceutical Technology, Center of Drug
Absorption and Transport, University of Greifswald, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany
| | - Grzegorz Garbacz
- Physiolution GmbH, Walther-Rathenau-Str. 49a, 17489 Greifswald, Germany
| | - Marco Neumann
- Institute of Pharmacy, Department
of Biopharmaceutics and Pharmaceutical Technology, Center of Drug
Absorption and Transport, University of Greifswald, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany
| | - Werner Weitschies
- Institute of Pharmacy, Department
of Biopharmaceutics and Pharmaceutical Technology, Center of Drug
Absorption and Transport, University of Greifswald, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany
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34
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Low-energy formation of edible nanoemulsions: Factors influencing droplet size produced by emulsion phase inversion. J Colloid Interface Sci 2012; 388:95-102. [DOI: 10.1016/j.jcis.2012.07.089] [Citation(s) in RCA: 240] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 07/30/2012] [Accepted: 07/31/2012] [Indexed: 01/10/2023]
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35
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Yang Y, Marshall-Breton C, Leser ME, Sher AA, McClements DJ. Fabrication of ultrafine edible emulsions: Comparison of high-energy and low-energy homogenization methods. Food Hydrocoll 2012. [DOI: 10.1016/j.foodhyd.2012.04.009] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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36
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Guerra A, Etienne-Mesmin L, Livrelli V, Denis S, Blanquet-Diot S, Alric M. Relevance and challenges in modeling human gastric and small intestinal digestion. Trends Biotechnol 2012; 30:591-600. [DOI: 10.1016/j.tibtech.2012.08.001] [Citation(s) in RCA: 294] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 07/30/2012] [Accepted: 08/01/2012] [Indexed: 12/14/2022]
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37
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Tan Q, Li Y, Wu J, Mei H, Zhao C, Zhang J. An optimized molecular inclusion complex of diferuloylmethane: enhanced physical properties and biological activity. Int J Nanomedicine 2012; 5:5385-93. [PMID: 23091376 PMCID: PMC3471540 DOI: 10.2147/ijn.s36404] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Objective The purpose of this study was to explore and evaluate the enhanced physical properties and biological activity of a molecular inclusion complex (MICDH) comprising diferuloylmethane (DFM) and hydroxypropyl-β-cyclodextrin. Methods The preparation conditions of MICDH were optimized using an orthogonal experimental design. The solubility, in vitro release and model fitting, microscopic morphology, molecular structure simulation, anti-lung cancer activity, and action mechanism of MICDH were evaluated. Results The solubility of DFM was improved 4400-fold upon complexation with hydroxypropyl-β-cyclodextrin. The release rate of DFM was significantly higher from MICDH than from free DFM. MICDH exhibited higher antitumor activity against human lung adenocarcinoma A549 cells than free DFM. More cells were arrested in the S/G2 phase of the cell cycle or were induced to undergo apoptosis when treated with MICDH than when treated with free DFM. Furthermore, increased reactive oxygen species and intracellular calcium ion levels and decreased mitochondrial membrane potential were observed in cells treated with MICDH. Conclusion MICDH markedly improved the physical properties and antitumor activity of DFM. MICDH may prove to be a preferred alternative to free DFM as a formulation for DFM delivery in lung cancer treatment.
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Affiliation(s)
- Qunyou Tan
- Department of Thoracic Surgery, Third Military Medical University, Chongqing, People's Republic of China
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38
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Agrawal S, Giri TK, Tripathi DK, . A, Alexander A. A Review on Novel Therapeutic Strategies for the Enhancement of Solubility for Hydrophobic Drugs through Lipid and Surfactant Based Self Micro Emulsifying Drug Delivery System: A Novel Approach. ACTA ACUST UNITED AC 2012. [DOI: 10.3923/ajdd.2012.143.183] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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39
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Insights into the Role of Polymer-Surfactant Complexes in Drug Solubilisation/Stabilisation During Drug Release from Solid Dispersions. Pharm Res 2012; 30:290-302. [DOI: 10.1007/s11095-012-0873-7] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Accepted: 07/13/2012] [Indexed: 10/27/2022]
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40
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Mercuri A, Belton PS, Royall PG, Barker SA. Identification and molecular interpretation of the effects of drug incorporation on the self-emulsification process using spectroscopic, micropolarimetric and microscopic measurements. Mol Pharm 2012; 9:2658-68. [PMID: 22913291 DOI: 10.1021/mp300219h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Addition of a drug to a self-emulsifying drug delivery system (SEDDS) can affect the emulsification process after administration, leading to variation in the emulsion droplet size formed and potentially its clinical behavior (Mercuri et al., Pharm. Res., 2011, 28, 1540-1551). However, the mechanisms involved and, in particular, the location of the drug within the system are poorly understood. Here, we have investigated the location of a model drug, ibuprofen, in the emulsions formed from a simple anhydrous SEDDS (soybean oil, Tween 80 and Span 80), using a range of physical characterization techniques. (1)H NMR studies showed an interaction between the drug and the polyoxyethylene chains of the surfactant Tween 80. Micropolarity assessment of the emulsion droplet interfacial region, using the chemical probes pyrene and Reichardt's dye, confirmed this interaction, and suggested that the drug was altering the microenvironment around the surfactants, and hence the behavior of the SEDDS with water during emulsification. Both dielectric spectroscopy and polarized light microscopy highlighted the differential behavior with water of placebo and drug-loaded SEDDS, also seen in the initial visual observational studies on the emulsification performance of the SEDDS. (1)H NMR studies with three other NSAIDs indicate that this effect is not confined to ibuprofen alone. The study has therefore indicated that the drug's influence on the emulsification process may be related to interactions within the microenvironment of the surfactant layer. Furthermore, such interactions may be usefully identified and characterized using a combination of micropolarity, spectroscopic and microscopic methods.
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Affiliation(s)
- A Mercuri
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
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41
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Wagner C, Jantratid E, Kesisoglou F, Vertzoni M, Reppas C, B Dressman J. Predicting the oral absorption of a poorly soluble, poorly permeable weak base using biorelevant dissolution and transfer model tests coupled with a physiologically based pharmacokinetic model. Eur J Pharm Biopharm 2012; 82:127-38. [PMID: 22652546 DOI: 10.1016/j.ejpb.2012.05.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 05/15/2012] [Accepted: 05/18/2012] [Indexed: 01/10/2023]
Abstract
For predicting food effects and simulating plasma profiles of poorly soluble drugs, physiologically based pharmacokinetic models have become a widely accepted tool in academia and the pharmaceutical industry. Up till now, however, simulations appearing in the open literature have mainly focused on BCS class II compounds, and many of these simulations tend to have more of a "retrospective" than a prognostic, predictive character. In this work, investigations on the absorption of a weakly basic BCS class IV drug, "Compound A", were performed. The objective was to predict the plasma profiles of an immediate release (IR) formulation of Compound A in the fasted and fed state. For this purpose, in vitro biorelevant dissolution tests and transfer model experiments were conducted. Dissolution and precipitation kinetics were then combined with in vivo post-absorptive disposition parameters using STELLA® software. As Compound A not only exhibits poor solubility but also poor permeability, a previously developed STELLA® model was revised to accommodate the less than optimal permeability characteristics as well as precipitation of the drug in the fasted state small intestine. Permeability restrictions were introduced into the model using an absorption rate constant calculated from the Caco-2 permeability value of Compound A, the effective intestinal surface area and appropriate intestinal fluid volumes. The results show that biorelevant dissolution tests are a helpful tool to predict food effects of Compound A qualitatively. However, the plasma profiles of Compound A could only be predicted quantitatively when the results of biorelevant dissolution test were coupled with the newly developed PBPK model.
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Affiliation(s)
- Christian Wagner
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt/Main, Germany
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Abstract
Abstract
Objectives
The in-vivo performance of oral modified-release dosage forms is determined by the interplay of various physiological- and dosage-form-derived parameters. Thus it is often a challenge to predict the in-vivo drug-release behaviour from modified-release dosage forms based solely on in-vitro release rates.
Key findings
For a long time the most common procedure to obtain in-vitro/in-vivo correlations for modified-release formulations was to apply test conditions typically used for quality control on a retrospective basis. Such so-called ‘compendial approaches’ are typically not biorelevant with respect to volumes, composition and physicochemical properties of the test media and also do not take into consideration the mechanical and hydrodynamic forces that may influence dosage-form behaviour during passage through the gastrointestinal tract.
Summary
This review provides an overview of physiological conditions relevant to in-vivo drug release and of dissolution models which, based on current scientific findings on human gastrointestinal physiology, have been developed to enable a better prediction of the in-vivo performance of oral MR dosage forms.
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Affiliation(s)
- Grzegorz Garbacz
- Institute of Pharmacy, Ernst Moritz Arndt University, Greifswald, Germany
| | - Sandra Klein
- Institute of Pharmacy, Ernst Moritz Arndt University, Greifswald, Germany
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Vardakou M, Sainsbury F, Rigby N, Mulholland F, Lomonossoff GP. Expression of active recombinant human gastric lipase in Nicotiana benthamiana using the CPMV-HT transient expression system. Protein Expr Purif 2012; 81:69-74. [PMID: 21945702 DOI: 10.1016/j.pep.2011.09.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 09/08/2011] [Accepted: 09/09/2011] [Indexed: 11/23/2022]
Abstract
Recombinant human gastric lipase (hGL) was transiently expressed in Nicotiana benthamiana leaves using the CPMV-HT expression system. Expression levels of up to 0.5mg recombinant hGL per gram of infiltrated leaf tissue were obtained. Proteins expressed from two hGL constructs, wild type (wt-hGL) and with a Histidine tag at its C terminal (hGL-His), were purified from leaf tissue using Immobilized Lectin Affinity chromatography and Immobilized Metal Affinity chromatography. Both variants were glycosylated, enzymatically active, and had an apparent molecular weight similar to native hGL (approx. 50kDa). The recombinant hGLs were stable under acidic conditions and in the presence of gastric pepsin. Moreover, as found with the naturally occurring enzyme, the activity of recombinant hGL on the short chain lipid, tributyrin, was higher than on long chain Intralipid 30% emulsion. The maximum specific activity measured on tributyrin was 310 U/mg of protein and the maximum yield was 193 U/g of infiltrated leaf tissue. These results show that transient expression in plants can be used to produce active hGL that could be efficiently purified using established techniques. The approach provides a means of generating large quantities of hGL that could be of use for a number of applications both in vitro and in vivo.
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Affiliation(s)
- Maria Vardakou
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, UK
| | - Frank Sainsbury
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
| | - Neil Rigby
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, UK
| | | | - George P Lomonossoff
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK.
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Vardakou M, Mercuri A, Naylor TA, Rizzo D, Butler JM, Connolly PC, Wickham MSJ, Faulks RM. Predicting the human in vivo performance of different oral capsule shell types using a novel in vitro dynamic gastric model. Int J Pharm 2011; 419:192-9. [PMID: 21843611 DOI: 10.1016/j.ijpharm.2011.07.046] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 07/28/2011] [Accepted: 07/30/2011] [Indexed: 10/17/2022]
Abstract
The disintegration of a capsule shell may determine the onset of drug dissolution from capsule formulations. In this study, the release of a rapidly dissolving model drug (paracetamol), from two hydroxypropyl methylcellulose capsules containing either carageenan (HPMC-C) or gellan gum (HPMC-G) and one hard gelatin (HG) capsule, were investigated using a conventional in vitro model, the USP dissolution apparatus I, and a novel in vitro model of the human gastric compartment, the dynamic gastric model (DGM). The results obtained in vitro were compared with in vivo gamma scintigraphy human data and in vivo gastric emptying profiles available in the literature. The drug release from HPMC-G capsules, observed with the USP dissolution apparatus I, was delayed with respect to the other two capsules, while the results obtained from the DGM in the fasted state were closer together, which was in agreement with data from the in vivo studies. In the fasted state, the capsule rupture times obtained from the DGM were similar to those observed by gamma scintigraphy in vivo studies. In the fed state, the 'apparent' rupture times observed with the DGM were delayed compared to fasted, and were even longer than those observed by scintigraphy in vivo for HPMC-G and HG capsules. However, these discrepancies can reasonably be explained by considering the impact of food upon dispersion of the capsule contents and the sampling from the DGM, when compared to the human scintigraphy experiments.
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Affiliation(s)
- M Vardakou
- Model Gut Platform, Institute of Food Research, Colney, Norwich NR4 7UA, UK
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