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Mittraparp-Arthorn P, Ungphaiboon S, Takahashi Yupanqui C, Suwannasin S, Wijukkul C, Tanmanee N, Srichana T. The potential of turmeric extract-loaded chitosan microparticles for the treatment of gastrointestinal disorders. J Microencapsul 2024:1-17. [PMID: 39140474 DOI: 10.1080/02652048.2024.2390958] [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: 03/30/2024] [Accepted: 08/07/2024] [Indexed: 08/15/2024]
Abstract
AIM To develop turmeric extract-loaded chitosan microparticles for treating gastrointestinal disorders. METHODS The microparticles were prepared using a spray-drying process, optimised the characteristics by biomarker loading, and encapsulation efficiency, and assessed for bioactivities related to gastrointestinal diseases. RESULTS The optimised microparticles were spherical, with a mean diameter of 2.11 ± 0.34 µm, a SPAN of 4.46 ± 0.68, a zeta potential of +37.6 ± 0.2 mV, loading of 15.7% w/w curcuminoids, 5.4% w/w ar-turmerone, and encapsulation efficiency of 63.26 ± 1.62% w/w curcuminoids and 43.75 ± 1.33% w/w ar-turmerone. Encapsulation of turmeric extract improved release at 6 h by 20 times and mucoadhesion by 3.6 times. The microparticles exhibited high acid-neutralising capacity (1.64 ± 0.34 mEq/g) and inhibited nitric oxide production about twice as effectively as the turmeric extract, while maintaining antioxidant and antibacterial activities. CONCLUSION Encapsulation of turmeric extract in chitosan microparticles effectively enhanced therapeutic potential for gastrointestinal disorders.
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Affiliation(s)
| | - Suwipa Ungphaiboon
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
| | - Chutha Takahashi Yupanqui
- Center of Excellence in Functional Foods and Gastronomy, Faculty of Agro-Industry, Prince of Songkla University, Songkhla, Thailand
| | - Sirikan Suwannasin
- Division of Biological Sciences, Faculty of Sciences, Prince of Songkla University, Songkhla, Thailand
| | - Chutikan Wijukkul
- Division of Biological Sciences, Faculty of Sciences, Prince of Songkla University, Songkhla, Thailand
| | - Niwan Tanmanee
- Pharmaceutical Laboratory Service Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
| | - Teerapol Srichana
- Drug Delivery System Excellence Center, Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
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Mukherjee S, Khanam J. Exploring the Effectiveness of Carboxymethylated and Crosslinked Albizia Procera Gum in Diltiazem Hydrochloride Matrix Tablets: A Comparative Analysis. Chem Pharm Bull (Tokyo) 2024:c23-00652. [PMID: 38644216 DOI: 10.1248/cpb.c23-00652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
This study investigates the efficacy of modified Albizia procera gum as a release-retardant polymer in Diltiazem hydrochloride (DIL) matrix tablets. Carboxymethylated Albizia procera gum (CAP) and ionically crosslinked carboxymethylated Albizia procera gum (Ca-CAP) were utilized, with Ca-CAP synthesized via crosslinking CAP with calcium ions (Ca2+) using calcium chloride (CaCl2). FTIR analysis affirmed polymer compatibility, while Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) assessed thermal behavior and crystallinity, respectively. Zeta potential analysis explored surface charge and electrostatic interactions, while rheology examined flow and viscoelastic properties. Swelling and erosion kinetics provided insights into water penetration and stability. CAP's carboxymethyl groups (-CH2-COO-) heightened divalent cation reactivity, and crosslinking with CaCl2 produced Ca-CAP through -CH2-COO- and Ca2+ interactions. Structural similarities between the polymers were revealed by FTIR, with slight differences. DSC indicated modified thermal behavior in Ca-CAP, while Zeta potential analysis showcased negative charges, with Ca-CAP exhibiting lower negativity. XRD highlighted increased crystallinity in Ca-CAP due to calcium crosslinking. Minimal impact on RBC properties was observed with both polymers compared to the positive control as water for injection (WFI). Ca-CAP exhibited improved viscosity, strength, controlled swelling, and erosion, allowing prolonged drug release compared to CAP. Stability studies confirmed consistent six-month drug release, emphasizing Ca-CAP's potential as a stable, sustained drug delivery system over CAP. Robustness and accelerated stability tests supported these findings, underscoring the promise of Ca-CAP in controlled drug release applications.
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Affiliation(s)
| | - Jasmina Khanam
- Department of Pharmaceutical Technology, Jadavpur University
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3
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Kotha AA, Ahmad SU, Dewan I, Bhuiyan MA, Rahman FI, Naina Mohamed I, Reza MS. Metformin Hydrochloride Loaded Mucoadhesive Microspheres and Nanoparticles for Anti-Hyperglycemic and Anticancer Effects Using Factorial Experimental Design. Drug Des Devel Ther 2023; 17:3661-3684. [PMID: 38084128 PMCID: PMC10710808 DOI: 10.2147/dddt.s432790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/10/2023] [Indexed: 12/18/2023] Open
Abstract
Background Metformin hydrochloride (HCl) microspheres and nanoparticles were formulated to enhance bioavailability and minimize side effects through sustained action and optimized drug-release characteristics. Initially, the same formulation design with different ratios of metformin HCl and Eudragit RSPO was used to formulate four batches of microspheres and nanoparticles using solvent evaporation and nanoprecipitation methods, respectively. Methods The produced formulations were evaluated based on particle size and shape (particle size distribution (PSD), scanning electron microscope (SEM)), incompatibility (differential scanning calorimetry (DSC), Fourier-transform infrared (FTIR)), drug release pattern, permeation behavior, in vivo hypoglycemic effects, and in vitro anticancer potential. Results Compatibility studies concluded that there was minimal interaction between metformin HCl and the polymer, whereas SEM images revealed smoother, more spherical nanoparticles than microspheres. Drug release from the formulations was primarily controlled by the non-Fickian diffusion process, except for A1 and A4 by Fickian, and B3 by Super case II. Korsmeyer-Peppas was the best-fit model for the maximum formulations. The best formulations of microspheres and nanoparticles, based on greater drug release, drug entrapment, and compatibility characteristics, were attributed to the study of drug permeation by non-everted intestinal sacs, in vivo anti-hyperglycemic activity, and in vitro anticancer activity. Conclusion This study suggests that the proposed metformin HCl formulation can dramatically reduce hyperglycemic conditions and may also have anticancer potential.
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Affiliation(s)
- Amina Alam Kotha
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Shihab Uddin Ahmad
- Department of Pharmacy, School of Medicine, University of Asia Pacific, Dhaka, 1215, Bangladesh
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, 56000, Malaysia
| | - Irin Dewan
- Department of Pharmacy, School of Medicine, University of Asia Pacific, Dhaka, 1215, Bangladesh
| | - Mohiuddin Ahmed Bhuiyan
- Department of Pharmacy, School of Medicine, University of Asia Pacific, Dhaka, 1215, Bangladesh
| | - Fahad Imtiaz Rahman
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Isa Naina Mohamed
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, 56000, Malaysia
| | - Md Selim Reza
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Dhaka, Dhaka, 1000, Bangladesh
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A Micro-In-Macro Gastroretentive System for the Delivery of Narrow-Absorption Window Drugs. Polymers (Basel) 2023; 15:polym15061385. [PMID: 36987166 PMCID: PMC10055986 DOI: 10.3390/polym15061385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/01/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
A micro-in-macro gastroretentive and gastrofloatable drug delivery system (MGDDS), loaded with the model-drug ciprofloxacin, was developed in this study to address the limitations commonly experienced in narrow-absorption window (NAW) drug delivery. The MGDDS, which consists of microparticles loaded in a gastrofloatable macroparticle (gastrosphere) was designed to modify the release of ciprofloxacin, allowing for an increased drug absorption via the gastrointestinal tract. The prepared inner microparticles (1–4 µm) were formed by crosslinking chitosan (CHT) and Eudragit® RL 30D (EUD), with the outer gastrospheres prepared from alginate (ALG), pectin (PEC), poly(acrylic acid) (PAA) and poly(lactic-co-glycolic) acid (PLGA). An experimental design was utilized to optimize the prepared microparticles prior to Fourier Transition Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM) and in vitro drug release studies. Additionally, the in vivo analysis of the MGDDS, employing a Large White Pig model and molecular modeling of the ciprofloxacin-polymer interactions, were performed. The FTIR results determined that the crosslinking of the respective polymers in the microparticle and gastrosphere was achieved, with the SEM analysis detailing the size of the microparticles formed and the porous nature of the MGDDS, which is essential for drug release. The in vivo drug release analysis results further displayed a more controlled ciprofloxacin release profile over 24 h and a greater bioavailability for the MGDDS when compared to the marketed immediate-release ciprofloxacin product. Overall, the developed system successfully delivered ciprofloxacin in a control-release manner and enhanced its absorption, thereby displaying the potential of the system to be used in the delivery of other NAW drugs.
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Khizer Z, Akram MR, Tahir MA, Liu W, Lou S, Conway BR, Ghori MU. Personalised 3D-Printed Mucoadhesive Gastroretentive Hydrophilic Matrices for Managing Overactive Bladder (OAB). Pharmaceuticals (Basel) 2023; 16:ph16030372. [PMID: 36986471 PMCID: PMC10056888 DOI: 10.3390/ph16030372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/14/2023] [Accepted: 02/20/2023] [Indexed: 03/06/2023] Open
Abstract
Overactive bladder (OAB) is a symptomatic complex condition characterised by frequent urinary urgency, nocturia, and urinary incontinence with or without urgency. Gabapentin is an effective treatment for OAB, but its narrow absorption window is a concern, as it is preferentially absorbed from the upper small intestine, resulting in poor bioavailability. We aimed to develop an extended release, intragastric floating system to overcome this drawback. For this purpose, plasticiser-free filaments of PEO (polyethylene oxide) and the drug (gabapentin) were developed using hot melt extrusion. The filaments were extruded successfully with 98% drug loading, possessed good mechanical properties, and successfully produced printed tablets using fused deposition modelling (FDM). Tablets were printed with varying shell numbers and infill density to investigate their floating capacity. Among the seven matrix tablet formulations, F2 (2 shells, 0% infill) showed the highest floating time, i.e., more than 10 h. The drug release rates fell as the infill density and shell number increased. However, F2 was the best performing formulation in terms of floating and release and was chosen for in vivo (pharmacokinetic) studies. The pharmacokinetic findings exhibit improved gabapentin absorption compared to the control (oral solution). Overall, it can be concluded that 3D printing technology is an easy-to-use approach which demonstrated its benefits in developing medicines based on a mucoadhesive gastroretentive strategy, improving the absorption of gabapentin with potential for the improved management of OAB.
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Affiliation(s)
- Zara Khizer
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield HD1 3DH, UK
| | - Muhammad R. Akram
- College of Pharmacy, University of Sargodha, Sargodha 40100, Pakistan
| | - Muhammad Azam Tahir
- Institute of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, 53113 Bonn, Germany
- Department of Pharmacy, Khalid Mahmood Institute of Medical Sciences, Sialkot 51310, Pakistan
| | - Weidong Liu
- School of Computing and Engineering, University of Huddersfield, Huddersfield HD1 3DH, UK
| | - Shan Lou
- School of Computing and Engineering, University of Huddersfield, Huddersfield HD1 3DH, UK
| | - Barbara R. Conway
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield HD1 3DH, UK
| | - Muhammad Usman Ghori
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield HD1 3DH, UK
- Correspondence: ; Tel.: +44-(0)-1484-256950
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Wani TU, Fazli AA, Raza SN, Khan NA, Sheikh FA. Formulation and Pharmacokinetic Evaluation of Ethyl Cellulose/HPMC-Based Oral Expandable Sustained Release Dosage of Losartan Potassium. AAPS PharmSciTech 2022; 23:160. [PMID: 35676602 DOI: 10.1208/s12249-022-02295-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 05/02/2022] [Indexed: 11/30/2022] Open
Abstract
Prolonged retention of losartan potassium in the upper gastrointestinal tract is anticipated to increase its absorption and exposure to CYP450 enzyme subfamilies, undertaking its conversion to more potent (10-40 times) active metabolite, losartan carboxylic acid (LCA). Consistent with this, hydroxypropyl methylcellulose K4M/ethyl cellulose-based novel expandable films (EFs) containing losartan potassium (LP) suitable for prolonged retention in the stomach were developed. The films were prepared by solvent casting method. USP type II dissolution apparatus (0.1 N HCl, 37°C, 100 rpm) was used to perform the dissolution testing (drug release, unfolding behavior, film integrity, erosion, and water uptake) of the films. In vivo pharmacokinetic studies were carried out in rabbits. An HPLC-UV method was used for the quantification of the drug and its active metabolite in plasma. These folded films placed inside hard gelatin capsule shells unfolded to full dimensions in dissolution medium and provided sustained drug release throughout 12 h. The plasma drug concentration-time curves obtained from the in vivo studies were used to determine pharmacokinetic parameters, such as area under the plasma drug concentration-time curve (AUC), area under first moment curve (AUMC), mean residence time (MRT), Cmax, Tmax, t1/2, ke, and Fr in comparison with that of the market formulation, Cozaar®. The novel EFs significantly changed the pharmacokinetic parameters of the drug and its active metabolite. The apparent elimination rate constant (ke) significantly decreased, while MRT and elimination half-life (t1/2) increased in both cases. The relative bioavailabilities (Fr) of both LP and E3174 using the novel formulation were higher than that of Cozaar®.
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Affiliation(s)
- Taha Umair Wani
- Department of Pharmaceutical Sciences, School of Applied Sciences and Technology, University of Kashmir Srinagar, Kashmir, 190006, India.,Department of Nanotechnology, School of Biological Sciences, University of Kashmir Srinagar, Kashmir, 190006, India
| | - Abdul Aala Fazli
- Department of Pharmaceutical Sciences, School of Applied Sciences and Technology, University of Kashmir Srinagar, Kashmir, 190006, India
| | - Syed Naiem Raza
- Department of Pharmaceutical Sciences, School of Applied Sciences and Technology, University of Kashmir Srinagar, Kashmir, 190006, India
| | - Nisar Ahmad Khan
- Department of Pharmaceutical Sciences, School of Applied Sciences and Technology, University of Kashmir Srinagar, Kashmir, 190006, India.
| | - Faheem A Sheikh
- Department of Nanotechnology, School of Biological Sciences, University of Kashmir Srinagar, Kashmir, 190006, India.
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Pereira ADSBF, de Souza Lima ML, da Silva-Junior AA, dos Santos Silva E, de Araújo Júnior RF, Martins AA, Alves JSF, Oliveira ADS, De Santis Ferreira L, de Araújo Costa ECT, Guerra GCB, de Medeiros CACX, Brito GAC, de Carvalho Leitao RF, de Araújo AA. In vitro-in vivo availability of metformin hydrochloride-PLGA nanoparticles in diabetic rats in a periodontal disease experimental model. PHARMACEUTICAL BIOLOGY 2021; 59:1576-1584. [PMID: 34808068 PMCID: PMC8635670 DOI: 10.1080/13880209.2021.2002369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 10/09/2021] [Accepted: 10/29/2021] [Indexed: 05/23/2023]
Abstract
CONTEXT Metformin is an important oral anti-hyperglycemic used in diabetes. Polylactic-co-glycolic acid (PLGA) has been widely used due to its reliability in controlling the release of drugs. OBJECTIVE This study evaluates the in vitro-in vivo availability of metformin hydrochloride-loaded polylactic-co-glycolic acid. MATERIAL AND METHODS In vitro metformin release (Met-free or PLGA + Met-12.5 mg/mL per 360 min) was evaluated using static Franz vertical diffusion cells. The in vivo study was performed with two control groups (validation bioanalytical method) and two experimental groups of diabetic male Wistar rats treated with PLGA + Met 10 mg/kg or Met 100 mg/kg by oral gavage. Diabetes was induced by streptozotocin (40 mg/kg) through the penile vein. Blood samples were collected 0.5, 1, 4, 7, 10, 12, 18, 24, 36, 48 and 72 h and analysed by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). RESULTS PLGA + Met 10 mg/kg was released in the in vitro assay suggesting a parabolic diffusion kinetic model (K -0.0619-0.5h) with a 100% release profile in 10 h by controlled diffusion. The in vivo assay showed the apparent volume of distribution Vz/F (PLGA + Met 10 mg/kg, 40971.8 mL/kg vs. Met 100 mg/kg, 2174.58 mL/kg) and mean residence time MRTinf (PLGA + Met 10 mg/kg, 37.66 h vs. Met 100 mg/kg, 3.34 h). DISCUSSION AND CONCLUSIONS The formulation modifies pharmacokinetics parameters such as apparent distribution volume and mean residence time. The PLGA + Met 10 mg/kg had a slower elimination rate compared to Met 100 mg/kg in diabetic rats in a periodontal disease experimental model.
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Affiliation(s)
| | | | | | - Emanuell dos Santos Silva
- Postgraduate Program in Pharmaceutical Science, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Raimundo Fernandes de Araújo Júnior
- Post-Graduation program in Functional and Structural Biology/Post-graduation program Health Science/Department of Morphology, UFRN, Natal, Brazil
| | | | | | | | | | | | - Gerlane Coelho Bernardo Guerra
- Post-Graduation Program in Biochemistry and Molecular Biology/Post-Graduation Program in Pharmaceutical Science, Department of Biophysics and Pharmacology, UFRN, Natal, Brazil
| | | | - Gerly A. C. Brito
- Postgraduate Program in Pharmacology, Postgraduate Program in Morphology, Department of Morphology, UFC, Fortaleza, Brazil
| | | | - Aurigena Antunes de Araújo
- Post-Graduation Program Oral Science/Post-Graduation Program in Pharmaceutical Science, Department of Biophysics and Pharmacology, UFRN, Natal, Brazil
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8
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Role of metformin in various pathologies: state-of-the-art microcapsules for improving its pharmacokinetics. Ther Deliv 2020; 11:733-753. [PMID: 32967584 DOI: 10.4155/tde-2020-0102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Metformin was originally derived from a botanical ancestry and became the most prescribed, first-line therapy for Type 2 diabetes in most countries. In the last century, metformin was discovered twice for its antiglycemic properties in addition to its antimalarial and anti-influenza effects. Metformin exhibits flip-flop pharmacokinetics with limited oral bioavailability. This review outlines metformin pharmacokinetics, pharmacodynamics and recent advances in polymeric particulate delivery systems as a potential tool to target metformin delivery to specific tissues/organs. This interesting biguanide is being rediscovered this century for multiple clinical indications as anticancer, anti-aging, anti-inflammatory, anti-Alzheimer's and much more. Microparticulate delivery systems of metformin may improve its oral bioavailability and optimize the therapeutic goals expected.
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Polydimethylsiloxane-customized nanoplatform for delivery of antidiabetic drugs. Ther Deliv 2020; 11:415-429. [DOI: 10.4155/tde-2020-0049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Aim: To develop a new self-emulsified silicon-grafted-alginate platform for pharmaceutical delivery. The produced biocompatible polymeric blend would be used to encapsulate metformin by a vibrational jet-flow ionotropic gelation process. Materials & methods: Polydimethylsiloxane was homogenized with alginate to prepare a stable polymeric mixture to which metformin was added. A metformin-loaded polymeric vehicle was then pumped through Buchi B-390 into CaCl2 to produce microcapsules. Results & conclusion: The platform showed a powerful, pseudoplastic thixotropic and demonstrated strong, efficient and wide applications of polydimethylsiloxane-customized technology in drug delivery and stability. A substantial improvement in drug loading, encapsulation efficiency and flow properties were noticed in siliconized microcapsules compared with the control.
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10
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Lowinger MB, Maier EY, Williams RO, Zhang F. Hydrophilic Poly(urethanes) Are an Effective Tool for Gastric Retention Independent of Drug Release Rate. J Pharm Sci 2020; 109:1967-1977. [PMID: 32087181 DOI: 10.1016/j.xphs.2020.02.011] [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: 10/30/2019] [Revised: 12/12/2019] [Accepted: 02/05/2020] [Indexed: 11/28/2022]
Abstract
Acyclovir is a poorly permeable, short half-life drug with poor colonic absorption, and current conventional controlled release formulations are unable to decrease the frequency of administration. We designed acyclovir dosage forms to be administered less frequently by being retained in the stomach and releasing drug over an extended duration. We developed a conventional modified-release matrix tablet to sustain the release of acyclovir and surrounded it with a hydrophilic poly(urethane) layer. When hydrated, the porous poly(urethane) swells to a size near or beyond that of the relaxed pylorus diameter and does not affect drug release rate. We demonstrated that the formulation is retained in the stomach for extended durations as it slowly releases drug, allowing for similar area under the curve but delayed tmax relative to a nongastroretentive control tablet. Unlike many other gastroretentive formulations, this dosage form design decouples drug release rate from gastric retention time, allowing them to be modulated independently. It also effectively retains in the stomach regardless of the prandial state, differentiating from other approaches. Our direct observation of excised rat stomachs allowed for a rigorous assessment of the impact of polymer swelling extent and the prandial state on both the dosage form integrity and retention time.
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Affiliation(s)
- Michael B Lowinger
- Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 2409 University Avenue, Austin, Texas 78712; MRL, Merck & Co, Inc., 126 E. Lincoln Avenue, Rahway, New Jersey 07065
| | - Esther Y Maier
- Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 2409 University Avenue, Austin, Texas 78712
| | - Robert O Williams
- Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 2409 University Avenue, Austin, Texas 78712
| | - Feng Zhang
- Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 2409 University Avenue, Austin, Texas 78712.
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Krause J, Bogdahn M, Schneider F, Koziolek M, Weitschies W. Design and characterization of a novel 3D printed pressure-controlled drug delivery system. Eur J Pharm Sci 2019; 140:105060. [DOI: 10.1016/j.ejps.2019.105060] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 07/17/2019] [Accepted: 08/29/2019] [Indexed: 12/18/2022]
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Kumar P, Choonara YE, Pillay V. In silico analytico-mathematical interpretation of biopolymeric assemblies: Quantification of energy surfaces and molecular attributes via atomistic simulations. Bioeng Transl Med 2018; 3:222-231. [PMID: 30377662 PMCID: PMC6195908 DOI: 10.1002/btm2.10105] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/11/2018] [Accepted: 07/11/2018] [Indexed: 01/11/2023] Open
Abstract
Static-lattice atomistic simulations, in vacuum and solvent phase, have been recently employed to quantify the "in vitro-in vivo-in silico" performance-correlation profile of various drug delivery systems and biomaterial scaffolds. The reactional profile of biopolymers was elucidated by exploring the spatial disposition of the molecular components with respect to the formulation conditions and the final release medium. This manuscript provides a brief overview of recently completed and published studies related to molecular tectonics of: (a) the nanoformation and solvation properties of the surfactant-emulsified polymeric systems; (b) the formation and chemistry of polyelectrolyte complexes; (c) the effect of a plasticizer and/or drug on the physicomechanical properties of biomedical archetypes; (d) the molecular modeling templates to predict stimuli- and environmentally esponsive systems; and (e) the polymer-mucopeptide complexes and intermacromolecular networks. Furthermore, this report provides a detailed account of the role of molecular mechanics energy relationships toward the interpretation and understanding of the mechanisms that control the formation, fabrication, selection, design, performance, complexation, interaction, stereospecificity, and preference of various biopolymeric systems for biomedical applications.
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Affiliation(s)
- Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and PharmacologySchool of Therapeutic Sciences, Faculty of Health Sciences, University of the WitwatersrandJohannesburgSouth Africa
| | - Yahya E. Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and PharmacologySchool of Therapeutic Sciences, Faculty of Health Sciences, University of the WitwatersrandJohannesburgSouth Africa
| | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and PharmacologySchool of Therapeutic Sciences, Faculty of Health Sciences, University of the WitwatersrandJohannesburgSouth Africa
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Swain RP, Subudhi BB. Effect of semicrystalline polymers on self-emulsifying solid dispersions of nateglinide: in vitro and in vivo evaluation. Drug Dev Ind Pharm 2017; 44:56-65. [DOI: 10.1080/03639045.2017.1371739] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ranjit Prasad Swain
- Drug Development and Analysis Laboratory, School of Pharmaceutical Sciences, Siksha O Anusandhan University, Bhubaneswar, India
- Department of Pharmaceutical Technology, Maharajah’s College of Pharmacy, Vizianagaram, India
| | - Bharat Bhusan Subudhi
- Drug Development and Analysis Laboratory, School of Pharmaceutical Sciences, Siksha O Anusandhan University, Bhubaneswar, India
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Cetin M, Sahin S. Microparticulate and nanoparticulate drug delivery systems for metformin hydrochloride. Drug Deliv 2015; 23:2796-2805. [PMID: 26394019 DOI: 10.3109/10717544.2015.1089957] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
CONTEXT Metformin hydrochloride is a biguanide derivative widely used for the treatment of type 2 diabetes, prescribed nearly to 120 million people worldwide. Metformin has a relatively low oral bioavailability (about 50-60%). Although the major effect of metformin is to decrease hepatic glucose output as an antihyperglycemic agent, its inhibitory effects on the proliferation of some cancer cells (e.g. prostate, breast, glioma cells) have been demonstrated in the cell culture studies. Development of novel formulation (e.g. microparticles, nanoparticles) strategies for metformin might be useful to improve its bioavailability, to reduce the dosing frequency, to decrease gastrointestinal side effects and toxicity and to be helpful for effective use of metformin in cancer treatment. OBJECTIVE The main aim of this review is to summarize metformin HCl-loaded micro- and nanoparticulate drug delivery systems. METHOD The literature was rewieved with regard to the physicochemical, pharmacological properties of metformin, and also its mechanism of action in type 2 diabetes and cancer. In addition, micro- and nanoparticulate drug delivery systems developed for metformin were gathered from the literature and the results were discussed. CONCLUSION Metformin is an oral antihyperglycemic agent and also has potential antitumorigenic effects. The repeated applications of high doses of metformin (as immediate release formulations) are needed for an effective treatment due to its low oral bioavailability and short biological half-life. Drug delivery systems are very useful systems to overcome the difficulties associated with conventional dosage forms of metformin and also for its effective use in cancer treatment.
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Affiliation(s)
- Meltem Cetin
- a Department of Pharmaceutical Technology, Faculty of Pharmacy , Ataturk University , Erzurum , Turkey and
| | - Selma Sahin
- b Department of Pharmaceutical Technology, Faculty of Pharmacy , Hacettepe University , Ankara , Turkey
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Wang J, Kan S, Chen T, Liu J. Application of quality by design (QbD) to formulation and processing of naproxen pellets by extrusion–spheronization. Pharm Dev Technol 2014; 20:246-56. [DOI: 10.3109/10837450.2014.908300] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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16
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Buchholcz G, Kelemen A, Sovány T, Pintye-Hódi K. Matrix tablets based on a carrageenan with the modified-release of sodium riboflavin 5'-phosphate. Pharm Dev Technol 2014; 20:676-83. [PMID: 24758384 DOI: 10.3109/10837450.2014.910810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The focus of this work was to produce modified-release monolithic matrix tablets containing sodium riboflavin 5'-phosphate (vitamin B2) as active pharmaceutical ingredient (API). Riboflavin 5'-phosphate is absorbed from the upper gastrointestinal tract by a specific transport mechanism. The aim of this work was the development of modified-release tablets from which most or the entire API can dissolve within 5 h. The dissolution was started in medium pH 1.2 (gastric juice) and finished in medium pH 4.5. The matrix former was iota-carrageenan combined with microcrystalline cellulose (MCC) and lactose in different ratios. Factorial design was used in this work so as to study the effects of the MCC/lactose ratio on the parameters of the tablets, and especially on the dissolution process. The dissolution data were subjected to statistical analysis, and the release profiles were fitted with different models. It was found that the MCC/lactose ratio influenced the quality of the tablets to a high degree. The Korsmeyer-Peppas model proved to characterize the total dissolution profile best, but fitting of the separate sections was also possible with a linear model.
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Wilde L, Bock M, Wolf M, Glöckl G, Garbacz G, Weitschies W. Development of pressure-sensitive dosage forms with a core liquefying at body temperature. Eur J Pharm Biopharm 2014; 86:507-13. [DOI: 10.1016/j.ejpb.2013.12.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 12/08/2013] [Accepted: 12/10/2013] [Indexed: 11/26/2022]
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18
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Wilde L, Bock M, Glöckl G, Garbacz G, Weitschies W. Development of a pressure-sensitive glyceryl tristearate capsule filled with a drug-containing hydrogel. Int J Pharm 2014; 461:296-300. [DOI: 10.1016/j.ijpharm.2013.11.062] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/28/2013] [Accepted: 11/30/2013] [Indexed: 11/25/2022]
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Vahdati S, Shayanfar A, Hanaee J, Martínez F, Acree WE, Jouyban A. Solubility of Carvedilol in Ethanol + Propylene Glycol Mixtures at Various Temperatures. Ind Eng Chem Res 2013. [DOI: 10.1021/ie403054z] [Citation(s) in RCA: 186] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sahel Vahdati
- Biotechnology
Research Center, Tabriz University of Medical Sciences, Tabriz 51664, Iran
| | - Ali Shayanfar
- Students’
Research Committee, Tabriz University of Medical Sciences, Tabriz 51664, Iran
| | - Jalal Hanaee
- Drug
Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 51664, Iran
- School
of Life Sciences, University of Bradford, Bradford BD7 1DP, U.K
| | - Fleming Martínez
- Grupo
de Investigaciones Farmacéutico-Fisicoquímicas, Departamento
de Farmacia, Universidad Nacional de Colombia, A.A. 14490, Bogotá D.C., Colombia
| | - William E. Acree
- Department
of Chemistry, University of North Texas, Denton, Texas 76203-5070, United States
| | - Abolghasem Jouyban
- Drug
Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 51664, Iran
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Alam MA, Al-Jenoobi FI, Al-mohizea AM. Commercially bioavailable proprietary technologies and their marketed products. Drug Discov Today 2013; 18:936-49. [DOI: 10.1016/j.drudis.2013.05.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/29/2013] [Accepted: 05/15/2013] [Indexed: 11/28/2022]
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21
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Jones E, Ojewole E, Pillay V, Kumar P, Rambharose S, Govender T. Monolayered multipolymeric buccal films with drug and polymers of opposing solubilities for ARV therapy: Physico-mechanical evaluation and molecular mechanics modelling. Int J Pharm 2013; 455:197-212. [DOI: 10.1016/j.ijpharm.2013.07.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 07/13/2013] [Accepted: 07/15/2013] [Indexed: 10/26/2022]
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22
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Ngwuluka NC, Choonara YE, Modi G, du Toit LC, Kumar P, Ndesendo VMK, Pillay V. Design of an interpolyelectrolyte gastroretentive matrix for the site-specific zero-order delivery of levodopa in Parkinson's disease. AAPS PharmSciTech 2013; 14:605-19. [PMID: 23494468 DOI: 10.1208/s12249-013-9945-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 02/22/2013] [Indexed: 11/30/2022] Open
Abstract
This study focused on developing a gastroretentive drug delivery system employing a triple-mechanism interpolyelectrolyte complex (IPEC) matrix comprising high density, swelling, and bioadhesiveness for the enhanced site-specific zero-order delivery of levodopa in Parkinson's disease. An IPEC was synthesized and directly compressed into a levodopa-loaded matrix employing pharmaceutical technology and evaluated with respect to its physicochemical and physicomechanical properties and in vitro drug release. The IPEC-based matrix displayed superior mechanical properties in terms of matrix hardness (34-39 N/mm) and matrix resilience (44-47%) when different normality's of solvent and blending ratios were employed. Fourier transform infrared spectroscopy confirmed the formation of the IPEC. The formulations exhibited pH and density dependence with desirable gastro-adhesion with Peak Force of Adhesion ranging between 0.15 and 0.21 N/mm, densities from 1.43 to 1.54 g/cm(3) and swellability values of 177-234%. The IPEC-based gastroretentive matrix was capable of providing site-specific levodopa release with zero-order kinetics corroborated by detailed mathematical and molecular modeling studies. Overall, results from this study have shown that the IPEC-based matrix has the potential to improve the absorption and subsequent bioavailability of narrow absorption window drugs, such as levodopa with constant and sustained drug delivery.
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