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Devi P, Rathor S, Sharma P, Sen J, Kaur H, Singh J. Development of novel gastroretentive salbutamol sulfate-loaded sodium alginate-pectin bubble beads prepared by co-axial needle air-injection method and in vivo clinical evaluation by ultrasound studies. Eur J Pharm Sci 2018; 122:359-373. [PMID: 30017846 DOI: 10.1016/j.ejps.2018.07.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 06/22/2018] [Accepted: 07/06/2018] [Indexed: 11/28/2022]
Abstract
In the present study, the salbutamol sulfate-loaded sodium alginate-pectin (SS-loaded SA-PEC) bubble beads have been optimized and evaluated for drug loading, in vitro drug release, in vivo floating behavior in the stomach, etc. Nine batches (F1-F9) of bubble beads with different SA and PEC contents were prepared by novel co-axial needle air-injection method and related to their percent drug loading efficiency (%DLE) and percent drug release at 4 h (%R4h) as response factors. The multivariate analysis has shown the effect of SA/PEC ratio, total polymer content, as well as their interaction on %DLE and %R4h. In the quantitative modeling, the satisfactory adjustment of the linear models (along with interaction terms) with the experimental data for both %DLE and %R4h has confirmed the findings of the multivariate analysis. The optimized SS-loaded SA-PEC bubble beads based on 2D (contours), 3D, desirability, and overlay plots has exhibited %DLE of 87.35 ± 2.48% (n = 3 and error = 2.94%) and %R4h of 85.79 ± 2.98% (n = 3 and error = 0.25%). The in vitro drug release studies have shown almost complete (≥85%) SS release from all the batches within 4-6 h in simulated gastric fluid (SGF) pH 1.2. The in vivo clinical findings by ultrasound studies have shown excellent floatation (>6 h) behavior of bubble beads in the upper gastrointestinal tract (GIT) and efficient stomach-specific gastroretention.
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Affiliation(s)
- Pooja Devi
- College of Pharmacy, PGIMS, University of Health Sciences, Rohtak 124001, Haryana, India
| | - Sandeep Rathor
- College of Pharmacy, PGIMS, University of Health Sciences, Rohtak 124001, Haryana, India
| | - Pratibha Sharma
- College of Pharmacy, PGIMS, University of Health Sciences, Rohtak 124001, Haryana, India
| | - Jyotsna Sen
- Department of Radiodiagnosis, PGIMS, University of Health Sciences, Rohtak 124001, Haryana, India
| | - Harmeet Kaur
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Jasbir Singh
- College of Pharmacy, PGIMS, University of Health Sciences, Rohtak 124001, Haryana, India.
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Cvijic S, Ibric S, Parojcic J, Djuris J. An in vitro - in silico approach for the formulation and characterization of ranitidine gastroretentive delivery systems. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.02.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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53
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Kim JI, Park SW, Lim JJ, Sohn SI, Shin JS, Park SC, Jang YP, Chung EK, Lee HW, Lee KT. Gastroprotective effects of the isopropanol extract of Artemisia princeps and its gastroretentive floating tablets on gastric mucosal injury. ACTA PHARMACEUTICA (ZAGREB, CROATIA) 2017; 67:479-494. [PMID: 29337669 DOI: 10.1515/acph-2017-0037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/28/2017] [Indexed: 02/07/2023]
Abstract
In this study, we investigated the gastroprotective effect of an isopropanol extract from the aerial parts of Artemisia princeps (IPAP) and developed a gastroretentive floating tablet of IPAP (IPAP-FR) for maximized local gastroprotective effects. Pre-treatment with IPAP ameliorated the gastric mucosal hemorrhagic lesions in ethanol/HCl- or indomethacin- treated rats. IPAP decreased mucosal hemorrhage of gastric ulcers induced by ethanol or indomethacin plus pyloric ligation in rats. The optimized floating tablet, IPAP-FR, floated on medium surface with more sustained eupatilin release compared to the non-floating control tablet. X-ray photographs in beagle dogs showed that IPAPFR was retained for > 2 h in the stomach. In the ethanol-induced gastric ulcer rat model, the gastric hemorrhagic lesion was improved more substantially with IPAP-FR compared to the non-floating control tablet. Based on these data, our data suggest that IPAP-FR has an improved therapeutic potential for the treatment of gastric ulcer.
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Affiliation(s)
- Joo-Il Kim
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro Dongdaemun-gu, Seoul , 02447, Korea Republic of
- Central Research Institute, Daewon Pharmaceutical Company, 520 Cheonho-daero, Gwangjin-gu, Seoul Republic of Korea
| | - Sang-Wook Park
- Central Research Institute, Daewon Pharmaceutical Company, 520 Cheonho-daero, Gwangjin-gu, Seoul Republic of Korea
- Interdisciplinary Program in Agricultural Biotechnology College of Agriculture and Life Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul , 08826 Korea Republic of
| | - Jhong-Jae Lim
- Central Research Institute, Daewon Pharmaceutical Company, 520 Cheonho-daero, Gwangjin-gu, Seoul Republic of Korea
| | - Se-Il Sohn
- Central Research Institute, Daewon Pharmaceutical Company, 520 Cheonho-daero, Gwangjin-gu, Seoul Republic of Korea
| | - Ji-Su Shin
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro Dongdaemun-gu, Seoul , 02447, Korea Republic of
| | - Sang Cheol Park
- Department of Life and Nanopharmaceutical Science College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul , 02447, Korea Republic of
- Department of Oriental Pharmaceutical Sciences College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul , 02447, Korea Republic of
| | - Young Pyo Jang
- Department of Life and Nanopharmaceutical Science College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Korea 5 Department of Oriental Pharmaceutical Sciences College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul , 02447, Korea Republic of
| | - Eun Kyoung Chung
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu Seoul , 02447, Korea Republic of
| | - Hong-Woo Lee
- Central Research Institute, Daewon Pharmaceutical Company, 520 Cheonho-daero, Gwangjin-gu, Seoul Republic of Korea
| | - Kyung-Tae Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro Dongdaemun-gu, Seoul , 02447, Korea Republic of
- Department of Life and Nanopharmaceutical Science College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul , 02447, Korea Republic of
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54
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Floating tablets of minocycline hydrochloride: Formulation, in-vitro evaluation and optimization. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2017. [DOI: 10.1016/j.fjps.2017.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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55
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Hamman J, Demana P, Olivier E. Targeting Receptors, Transporters and Site of Absorption to Improve Oral Drug Delivery. Drug Target Insights 2017. [DOI: 10.1177/117739280700200003] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- J.H. Hamman
- School of Pharmacy, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - P.H. Demana
- School of Pharmacy, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - E.I. Olivier
- School of Pharmacy, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
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56
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Porwal A, Dwivedi H, Pathak K. Decades of research in drug targeting using gastroretentive drug delivery systems for antihypertensive therapy. BRAZ J PHARM SCI 2017. [DOI: 10.1590/s2175-97902017000300173] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Amit Porwal
- Uttar Pradesh University of Medical Sciences, India
| | | | - Kamla Pathak
- Uttar Pradesh University of Medical Sciences, India
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57
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Desai N, Purohit R. Design and Development of Clopidogrel Bisulfate Gastroretentive Osmotic Formulation Using Quality by Design Tools. AAPS PharmSciTech 2017; 18:2626-2638. [PMID: 28247292 DOI: 10.1208/s12249-017-0731-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 01/27/2017] [Indexed: 02/06/2023] Open
Abstract
Clopidogrel bisulfate (CBS) is antiplatelet drug and it is becoming a drug of choice in the treatment and management of prevention of heart attacks and strokes. CBS is stable and soluble in acidic pH; therefore, retention in stomach for prolonged period appears to be beneficial for controlling the bioavailability. The gastroretentive osmotic system (GROS) facilitates prolonged retention of drug in stomach and provides zero-order drug release. A complex formulation like GROS poses many challenges, and QbD tools can help in designing robust formulation which takes all aspects of product and process development in order to deliver a robust product. The GROS was formulated in three steps: core tablet, osmotic tablet, and gastroretentive osmotic tablet. The design of experiment was used for screening and optimization of formulation and process-related parameters. The dissolution study was carried out to analyze the release pattern of tablet. The optimized batch O-4 showed cumulative drug release of 19.43, 30.49, 64.41, and 85.11% at 2, 4, 8, and 12 h which is in the range of QTPP predictions. The novel technique of GROS was implemented successfully which demonstrates robust design giving consistent and desired results.
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58
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A novel mechanical antrum model for the prediction of the gastroretentive potential of dosage forms. Int J Pharm 2017; 530:63-70. [DOI: 10.1016/j.ijpharm.2017.07.067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/21/2017] [Accepted: 07/21/2017] [Indexed: 11/21/2022]
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59
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Ji J, He X, Yang XL, Du WJ, Cui CL, Wang L, Wang X, Zhang CF, Guo CR. The In vitro/vivo Evaluation of Prepared Gastric Floating Tablets of Berberine Hydrochloride. AAPS PharmSciTech 2017; 18:2149-2156. [PMID: 28035611 DOI: 10.1208/s12249-016-0696-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 12/13/2016] [Indexed: 02/04/2023] Open
Abstract
Currently available antiulcer drugs suffered from serious side effects which limited their uses and prompted the need for a safe and efficient new antiulcer agent. The objective of this project work was to retain the drug in the stomach for better antiulcer activity and less side effects. Hence, the aim of our present work was to prepare a gastric floating tablet of Berberine hydrochloride (Ber) with suitable in vitro/vivo properties. In this study, different Ber gastric floating tablets were prepared by simple direct compression using various amounts of HPMCK15M and Carbopol 971PNF combined with other tablet excipients. The properties of the tablets including hardness, buoyancy, swelling ability, in vitro drug release, and in vivo pharmacokinetic study were evaluated. The obtained results disclosed that hardness, floating, swelling, and in vitro drug release of the Ber tablets depended mainly on the ratio of polymer combinations. Moreover, among six formulations, F3 exhibited desirable floating, swelling, and extended drug release. In addition, in vivo pharmacokinetic study suggested that prepared gastric floating tablets had significantly sustained-releasing effects compared with market tablets. Therefore, the developed gastric floating tablets of Ber could be an alternative dosage form for treatment of gastrointestinal disease.
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60
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Mackie AR, Goycoolea FM, Menchicchi B, Caramella CM, Saporito F, Lee S, Stephansen K, Chronakis IS, Hiorth M, Adamczak M, Waldner M, Nielsen HM, Marcelloni L. Innovative Methods and Applications in Mucoadhesion Research. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600534] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/10/2017] [Indexed: 01/03/2023]
Affiliation(s)
- Alan R. Mackie
- Institute of Food Research; Norwich Research Park Norwich NR4 7UA UK
- School of Food Science and Nutrition; University of Leeds; LS2 9JT Leeds UK
| | - Francisco M. Goycoolea
- School of Food Science and Nutrition; University of Leeds; LS2 9JT Leeds UK
- Institut für Biologie und Biotechnologie der Pflanzen; Westfälische Wilhelms-Universität Münster; Schlossgarten 3 48149 Münster Germany
| | - Bianca Menchicchi
- Department of Medicine 1; University of Erlangen-Nueremberg; Hartmanstrasse 14 91052 Erlangen Germany
- Nanotechnology Group; Department of Plant Biology and Biotechnology; University of Münster; Schlossgarten 3 48149 Münster Germany
| | | | - Francesca Saporito
- Department of Drug Sciences; University of Pavia; Via Taramelli, 12 27100 Pavia Italy
| | - Seunghwan Lee
- Department of Mechanical Engineering; Technical University of Denmark; Produktionstorvet 2800 Kgs Lyngby Copenhagen Denmark
| | - Karen Stephansen
- National Food Institute; Technical University of Denmark; Søltofts Plads, 2800 Kgs Lyngby Copenhagen Denmark
| | - Ioannis S. Chronakis
- National Food Institute; Technical University of Denmark; Søltofts Plads, 2800 Kgs Lyngby Copenhagen Denmark
| | - Marianne Hiorth
- School of Pharmacy; University of Oslo; Postboks 1068 Blindern 0316 OSLO Norway
| | - Malgorzata Adamczak
- School of Pharmacy; University of Oslo; Postboks 1068 Blindern 0316 OSLO Norway
| | - Max Waldner
- Medizinische Klinik 1; Ulmenweg 18 91054 Erlangen Germany
| | - Hanne Mørck Nielsen
- Department of Pharmacy; University of Copenhagen; Universitetsparken 2 2100 Copenhagen Denmark
| | - Luciano Marcelloni
- S.I.I.T. S.r.l Pharmaceutical & Health Food Supplements; Via Canova 5/7-20090 Trezzano S/N Milan Italy
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61
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Saadatjou N, Fattahi H. Core – Shell pH-Responsive Poly(Vinylpyrrolidone)-Block-Poly(Ethylene Glycol)-Block-Poly(Methacrylic Acid) Coated Magnetic Nanoparticle as a Carrier for Delivery of Poorly Water-Soluble Lovastatin. Pharm Chem J 2017. [DOI: 10.1007/s11094-017-1562-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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62
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Van Den Abeele J, Rubbens J, Brouwers J, Augustijns P. The dynamic gastric environment and its impact on drug and formulation behaviour. Eur J Pharm Sci 2017; 96:207-231. [DOI: 10.1016/j.ejps.2016.08.060] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 08/30/2016] [Accepted: 08/30/2016] [Indexed: 02/08/2023]
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63
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Krishna R, Rizk ML, Larson PJ, Schulz V, Friedman E, Gupta P, Kesisoglou F, Connor A, McDermott J, Smith R, Evans P. Novel Gastroretentive Controlled Release Formulations for Once-Daily Administration: Assessment of Clinical Feasibility and Formulation Concept for Raltegravir. Ther Innov Regul Sci 2016; 50:777-790. [DOI: 10.1177/2168479016657130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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64
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Sah B, McAinch A, Vasiljevic T. Modulation of bovine whey protein digestion in gastrointestinal tract: A comprehensive review. Int Dairy J 2016. [DOI: 10.1016/j.idairyj.2016.07.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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65
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Duthaler U, Sayasone S, Vanobbergen F, Penny MA, Odermatt P, Huwyler J, Keiser J. Single-Ascending-Dose Pharmacokinetic Study of Tribendimidine in Opisthorchis viverrini-Infected Patients. Antimicrob Agents Chemother 2016; 60:5705-15. [PMID: 27431234 PMCID: PMC5038241 DOI: 10.1128/aac.00992-16] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 07/12/2016] [Indexed: 01/27/2023] Open
Abstract
Praziquantel is the only drug available for the treatment of Opisthorchis viverrini infections. Tribendimidine has emerged as a potential treatment alternative; however, its pharmacokinetic (PK) properties have not been sufficiently studied to date. Via two phase IIa dose-finding studies, 68 O. viverrini patients were treated with 25- to 600-mg doses of tribendimidine using 50- and 200-mg tablet formulations. Plasma, blood, and dried blood spots (DBS) were sampled at selected time points. The two main metabolites of tribendimidine, active deacetylated amidantel (dADT) and acetylated dADT (adADT), were analyzed in plasma, blood, and DBS. PK parameters were estimated by noncompartmental analysis. An acceptable agreement among plasma and DBS concentrations was observed, with a mean bias of ≤10%, and 60% dADT and 74% adADT concentrations being within ±20% margins. We found that 200-mg tribendimidine tablets possess immediate floating characteristics, which led to variable time to maximal concentration of drug (Tmax) values (2 to 24 h) between individuals. Dose proportionality was observed for dADT from 25 to 200 mg using 50-mg tablets, but at higher dosages (200 to 600 mg), saturation occurred. The median ratio of the area under the plasma concentration-time curve from 0 to 24 h (AUC0-24) of dADT to the AUC0- 24 of adADT ranged from 0.8 to 26.4, suggesting substantial differences in acetylation rates. Cure rates ranged from 11% (25-mg dose) to 100% (400-mg dose). Cured patients showed significantly higher dADT maximal serum concentrations (Cmax) and AUC0-24 values than uncured patients. Tribendimidine is a promising drug for the treatment of opisthorchiasis. However, the tablet formulation should be optimized to achieve consistent absorption among patients. Further studies are warranted to assess the large differences between individuals in the rate of metabolic turnover of dADT to adADT. (This study has been registered with the ISRCTN Registry under no. ISRCTN96948551.).
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Affiliation(s)
- Urs Duthaler
- Swiss Tropical and Public Health Institute, Basel, Switzerland University of Basel, Basel, Switzerland
| | - Somphou Sayasone
- National Institute of Public Health, Ministry of Health, Vientiane, Lao People's Democratic Republic
| | - Fiona Vanobbergen
- Swiss Tropical and Public Health Institute, Basel, Switzerland University of Basel, Basel, Switzerland
| | - Melissa A Penny
- Swiss Tropical and Public Health Institute, Basel, Switzerland University of Basel, Basel, Switzerland
| | - Peter Odermatt
- Swiss Tropical and Public Health Institute, Basel, Switzerland University of Basel, Basel, Switzerland
| | - Jörg Huwyler
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Basel, Switzerland
| | - Jennifer Keiser
- Swiss Tropical and Public Health Institute, Basel, Switzerland University of Basel, Basel, Switzerland
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66
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Verma A, Dubey J, Hegde RR, Rastogi V, Pandit JK. Helicobacter pylori: past, current and future treatment strategies with gastroretentive drug delivery systems. J Drug Target 2016; 24:897-915. [DOI: 10.3109/1061186x.2016.1171326] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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67
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Sahu AK, Verma A. Development and statistical optimization of chitosan and eudragit based gastroretentive controlled release multiparticulate system for bioavailability enhancement of metformin HCl. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2016. [DOI: 10.1007/s40005-016-0229-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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68
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Huang Y, Wei Y, Yang H, Pi C, Liu H, Ye Y, Zhao L. A 5-fluorouracil-loaded floating gastroretentive hollow microsphere: development, pharmacokinetic in rabbits, and biodistribution in tumor-bearing mice. DRUG DESIGN DEVELOPMENT AND THERAPY 2016; 10:997-1008. [PMID: 27042001 PMCID: PMC4780720 DOI: 10.2147/dddt.s97735] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
5-Fluorouracil (5-FU) was loaded in hollow microspheres to improve its oral bioavailability. 5-FU hollow microspheres were developed by a solvent diffusion-evaporation method. The effect of Span 80 concentration, ether/ethanol volume ratio, and polyvinyl pyrrolidone/ethyl cellulose weight ratio on physicochemical characteristics, floating, and in vitro release behaviors of 5-FU hollow microspheres was investigated and optimized. The formulation and technology composed of Span 80 (1.5%, w/v), ether/ethanol (1.0:10.0, v/v), and polyvinyl pyrrolidone/ethyl cellulose (1.0:10.0, w/w) were employed to develop three batch samples, which showed an excellent reproducibility. The microspheres were spherical with a hollow structure with high drug loading amount (28.4%±0.5%) and production yield (74.2%±0.6%); they exhibited excellent floating and sustained release characteristics in simulated gastric and intestinal fluid. Pharmacokinetic studies demonstrated that 5-FU hollow microspheres significantly enhanced oral bioavailability (area under curve, [AUC](0-t): 12.53±1.65 mg/L(*)h vs 7.80±0.83 and 5.82±0.83 mg/L(*)h) with longer elimination half-life (t1/2) (15.43±2.12 hours vs 2.25±0.22 and 1.43±0.18 hours) and mean residence time (7.65±0.97 hours vs 3.61±0.41 and 2.34±0.35 hours), in comparison with its solid microspheres and powder. In vivo distribution results from tumor-bearing nude mice demonstrated that the animals administered with 5-FU hollow microspheres had much higher drug content in tumor, plasma, and stomach at 1 and 8 hours except for 0.5 hours sample collection time point in comparison with those administered with 5-FU solid microspheres and its powder. These results suggested that the hollow microspheres would be a promising controlled drug delivery system for an oral chemotherapy agent like 5-FU.
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Affiliation(s)
- Yu Huang
- Department of Pharmaceutical Sciences, College of Pharmacy, Sichuan Medical University, Luzhou, People's Republic of China
| | - Yumeng Wei
- Department of Pharmaceutical Sciences, College of Pharmacy, Sichuan Medical University, Luzhou, People's Republic of China
| | - Hongru Yang
- Department of Oncology, The First Affiliated Hospital of Sichuan Medical University, Luzhou, People's Republic of China
| | - Chao Pi
- Department of Pharmaceutical Sciences, College of Pharmacy, Sichuan Medical University, Luzhou, People's Republic of China
| | - Hao Liu
- Department of Pharmaceutical Sciences, College of Pharmacy, Sichuan Medical University, Luzhou, People's Republic of China
| | - Yun Ye
- Department of Pharmaceutical Sciences, College of Pharmacy, Sichuan Medical University, Luzhou, People's Republic of China; Department of Pharmacy, The First Affiliated Hospital of Sichuan Medical University, Luzhou, People's Republic of China
| | - Ling Zhao
- Department of Pharmaceutical Sciences, College of Pharmacy, Sichuan Medical University, Luzhou, People's Republic of China
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69
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Zhang C, Tang J, Liu D, Li X, Cheng L, Tang X. Design and evaluation of an innovative floating and bioadhesive multiparticulate drug delivery system based on hollow structure. Int J Pharm 2016; 503:41-55. [PMID: 26943975 DOI: 10.1016/j.ijpharm.2016.02.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 02/15/2016] [Accepted: 02/28/2016] [Indexed: 11/19/2022]
Abstract
In this study a gastric-retentive delivery system was prepared by a novel method which is reported here for the first time. An innovative floating and bioadhesive drug delivery system with a hollow structure was designed and prepared. The floating and bioadhesive drug delivery system was composed of a hollow spherical shell, a waterproof layer (Stearic acid), a drug layer (Ofloxacin), a release retarding film (the novel blended coating materials) and a bioadhesive layer (Carbomer 934P) prepared by using a liquid multi-layering process. A novel blended coating material was designed and investigated to solve the problem of the initial burst release of the formulation and the release mechanism of the novel material was analyzed in this study. The optimized formulation provided the sustained release characteristic and was able to float for 24h. The SEM cross-section images showed that the particulates were hollow with a spherical shell. X-ray images and pharmacokinetic studies (Frel = 124.1 ± 28.9%) in vivo showed that the gastric-retentive delivery system can be retained in the stomach for more than 6h. The floating and bioadhesive particulate drug delivery system based on a hollow structure with a dual function presented here is a viable alternative to other for gastroretentive drug delivery system.
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Affiliation(s)
- Chungang Zhang
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, China.
| | - Jingya Tang
- Department of Pharmacy, The Third Hospital of Dalian Medical University, Dalian, China
| | - Dechun Liu
- Department of Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, China
| | - Xuetao Li
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, China
| | - Lan Cheng
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, China
| | - Xing Tang
- Department of Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, China
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70
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Vo AQ, Feng X, Morott JT, Pimparade MB, Tiwari RV, Zhang F, Repka MA. A novel floating controlled release drug delivery system prepared by hot-melt extrusion. Eur J Pharm Biopharm 2015; 98:108-21. [PMID: 26643801 DOI: 10.1016/j.ejpb.2015.11.015] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 10/19/2015] [Accepted: 11/23/2015] [Indexed: 11/16/2022]
Abstract
Floating dosage forms are an important formulation strategy for drugs with a narrow absorption window and low intestinal solubility, and for localized gastric treatment. Novel floating pellets were prepared using the hot-melt extrusion (HME) technology. Uniformly foamed strands were created by liquid injection pumping and screw configuration modification. The ammonio methacrylate copolymer (Eudragit® RSPO) foaming structure was formed by a liquid-vapor phase transition inside the strand upon die exiting resulting from the sudden decrease in external pressure, vaporizing the liquid ethanol and vacating the extruded material. This generated uniform vacuous regions in the extrudate. The pellets' internal structure was investigated using scanning electron microscopy (SEM). The formulation constituents' and processing parameters' effects on the drug release profiles, floating force, and the pellets' micromeritic properties were evaluated by design of experiments: all formulations showed zero lag time and excellent floating strength, indicating immediate-floating pellet formation. The pellets' drug release profiles were controlled by multiple independent variables at different time points (⩽ 24 h). Drug loading significantly affected drug release within the first hour, the hydroxypropyl methylcellulose (HPMC) content thereafter. Understanding the variables' effects on the formulations allows for the tailoring of this delivery system to obtain various drug release profiles.
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Affiliation(s)
- Anh Q Vo
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Xin Feng
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Joseph T Morott
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Manjeet B Pimparade
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Roshan V Tiwari
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Feng Zhang
- College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
| | - Michael A Repka
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS 38677, USA; Pii Center for Pharmaceutical Technology, The University of Mississippi, University, MS 38677, USA.
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71
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Eberle VA, Häring A, Schoelkopf J, Gane PAC, Huwyler J, Puchkov M. In silico and in vitro methods to optimize the performance of experimental gastroretentive floating mini-tablets. Drug Dev Ind Pharm 2015; 42:808-17. [DOI: 10.3109/03639045.2015.1078350] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Veronika A. Eberle
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse, Basel, Switzerland,
| | - Armella Häring
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse, Basel, Switzerland,
| | | | - Patrick A. C. Gane
- School of Chemical Technology, Aalto University, Aalto, Helsinki, Finland
| | - Jörg Huwyler
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse, Basel, Switzerland,
| | - Maxim Puchkov
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse, Basel, Switzerland,
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72
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Zaman M, Sajid N, Rehman AU. Gastrointestinal Mucosa: The Target Site of Mucoadhesive Microspheres, A Review. ADVANCES IN POLYMER TECHNOLOGY 2015. [DOI: 10.1002/adv.21550] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Muhammad Zaman
- Faculty of Pharmacy; The University of Lahore; Lahore Pakistan
| | - Nayab Sajid
- Faculty of Pharmacy; The University of Lahore; Lahore Pakistan
| | - Atta Ur Rehman
- Faculty of Pharmacy; The University of Lahore; Lahore Pakistan
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73
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de Barros JMS, Lechner T, Charalampopoulos D, Khutoryanskiy VV, Edwards AD. Enteric coated spheres produced by extrusion/spheronization provide effective gastric protection and efficient release of live therapeutic bacteria. Int J Pharm 2015; 493:483-94. [PMID: 26188314 DOI: 10.1016/j.ijpharm.2015.06.051] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 06/24/2015] [Accepted: 06/25/2015] [Indexed: 11/18/2022]
Abstract
We present a novel but simple enteric coated sphere formulation containing probiotic bacteria (Lactobacillus casei). Oral delivery of live bacterial cells (LBC) requires live cells to survive firstly manufacturing processes and secondly GI microbicidal defenses including gastric acid. We incorporated live L. casei directly in the granulation liquid, followed by granulation, extrusion, spheronization, drying and spray coating to produce dried live probiotic spheres. A blend of MCC, calcium-crosslinked alginate, and lactose was developed that gave improved live cell survival during manufacturing, and gave excellent protection from gastric acid plus rapid release in intestinal conditions. No significant loss of viability was observed in all steps except drying, which resulted in approximately 1 log loss of viable cells. Eudragit coating was used to protect dried live cells from acid, and microcrystalline cellulose (MCC) was combined with sodium alginate to achieve efficient sphere disintegration leading to rapid and complete bacterial cell release in intestinal conditions. Viability and release of L. casei was evaluated in vitro in simulated GI conditions. Uncoated spheres gave partial acid protection, but enteric coated spheres effectively protected dried probiotic LBC from acid for 2h, and subsequently released all viable cells within 1h of transfer into simulated intestinal fluid.
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Affiliation(s)
- João M S de Barros
- School of Pharmacy, University of Reading, Whiteknights, Reading RG6 6AD, UK
| | - Tabea Lechner
- School of Pharmacy, University of Reading, Whiteknights, Reading RG6 6AD, UK
| | | | | | - Alexander D Edwards
- School of Pharmacy, University of Reading, Whiteknights, Reading RG6 6AD, UK.
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74
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Kanwar N, Kumar R, Sarwal A, Sinha VR. Preparation and evaluation of floating tablets of pregabalin. Drug Dev Ind Pharm 2015; 42:654-60. [PMID: 26146770 DOI: 10.3109/03639045.2015.1062895] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Floating tablets of pregabalin were prepared using different concentrations of the gums (xanthan gum and guar gum), Carbopol 974P NF and HPMC K100. Optimized formulations were studied for physical tests, floating time, swelling behavior, in vitro release studies and stability studies. In vitro drug release was higher for tablet batches containing guar and xanthan gum as compared to the batches containing Carbopol 974P NF. Tablet batches were subjected to stability studies and evaluated by different parameters (drug release, drug content, FTIR and DSC studies). The optimized tablet batch was selected for in vivo pharmacodynamic studies (PTZ induced seizures). The results obtained showed that the onset of jerks and clonus were delayed and extensor phase was abolished with time in treated groups. A significant difference (p > 0.05) was observed in control and treated group behavior indicating an excellent activity of the formulation for a longer period (>12 h).
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Affiliation(s)
| | | | | | - V R Sinha
- a UIPS, Panjab University , Chandigarh , India
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75
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Hu K, Xie X, Zhao YN, Li Y, Ruan J, Li HR, Jin T, Yang XL. Chitosan Influences the Expression of P-gp and Metabolism of Norfloxacin in Grass Carp. JOURNAL OF AQUATIC ANIMAL HEALTH 2015; 27:104-111. [PMID: 25997556 DOI: 10.1080/08997659.2014.993484] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The aim of this study was to investigate the relationship between the administration of chitosan (CTS), expression of permeability glycoprotein (P-gp), and the metabolism of norfloxacin (NOR) in Grass Carp Ctenopharyngodon idella. Fish were administrated with a single dose of either NOR, CTS, 1:5 NOR-CTS or 1:10 NOR-CTS. The P-gp expression was analyzed by immunohistochemistry and real time-PCR. The concentration of NOR was determined using HPLC. The mRNA and protein expression of P-gp in the fish intestine was significantly enhanced following a single dosage of 40 mg/kg NOR, and peak expression occurred at 3 h after drug administration (P < 0.05). A single dosage of both 1:5 NOR-CTS and 1:10 NOR-CTS reduced the intestinal P-gp expression to levels significantly lower than that from NOR alone (P < 0.05), but significantly higher than that from the control (P < 0.05). Interestingly, CTS alone also led to a slight decrease in P-gp expression. In addition, pharmacokinetic assays revealed a marked increase in area under the curve (AUC) of NOR with 1:5 and 1:10 NOR-CTS, by approximately 1.5-fold and threefold, respectively. Finally, the relative bioavailability of NOR after a single oral dosage of 1:5 and 1:10 NOR-CTS was enhanced to 148.02% and 304.98%, respectively. In this study, we demonstrated that the transmembrane glycoprotein P-gp regulates NOR metabolism in the intestine of Grass Carp, suggesting that NOR may be a direct substrate of P-gp. More importantly, we showed that CTS can inhibit P-gp expression in a dose-dependent manner and improve the relative bioavailability of NOR in this species.
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Affiliation(s)
- Kun Hu
- a National Pathogen Collection Center for Aquatic Animals , Shanghai Ocean University , 999 Hucheng Huan Road, Shanghai , 201306 , China
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76
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Karsdal MA, Riis BJ, Mehta N, Stern W, Arbit E, Christiansen C, Henriksen K. Lessons learned from the clinical development of oral peptides. Br J Clin Pharmacol 2015; 79:720-32. [PMID: 25408230 PMCID: PMC4415709 DOI: 10.1111/bcp.12557] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 11/14/2014] [Indexed: 01/11/2023] Open
Abstract
The oral delivery of peptides and proteins has been hampered by an array of obstacles. However, several promising novel oral delivery systems have been developed. This paper reviews the most advanced oral formulation technologies, and highlights key lessons and implications from studies undertaken to date with these oral formulations. Special interest is given to oral salmon calcitonin (CT), glucagon-like peptide-1 (GLP-1), insulin, PYY-(3-36), recombinant human parathyroid hormone (rhPTH(1-31)-NH2) and PTH(1-34), by different technologies. The issues addressed include (i) interaction with water, (ii) interaction with food, (iii) diurnal variation, (iv) inter- and intra-subject variability, (v) correlation between efficacy and exposure and (vi) key deliverables of different technologies. These key lessons may aid research in the development of other oral formulations.
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77
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Villanova J, Ayres E, Oréfice R. Design, characterization and preliminary in vitro evaluation of a mucoadhesive polymer based on modified pectin and acrylic monomers with potential use as a pharmaceutical excipient. Carbohydr Polym 2015; 121:372-81. [DOI: 10.1016/j.carbpol.2014.12.052] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 12/17/2014] [Accepted: 12/18/2014] [Indexed: 12/23/2022]
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78
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In-vitro and in-vivo evaluation of repaglinide loaded floating microspheres prepared from different viscosity grades of HPMC polymer. Saudi Pharm J 2015; 23:675-82. [PMID: 26702263 PMCID: PMC4669415 DOI: 10.1016/j.jsps.2015.02.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Accepted: 02/20/2015] [Indexed: 11/30/2022] Open
Abstract
During the study repaglinide encapsulated floating microspheres were formulated and characterized for enhancing residence time of drug in git and thereby increasing its bioavailability. Floating microspheres of ethylcellulose (EC) and hydroxypropyl methyl cellulose (HPMC) (5 and 100 cps) were prepared by emulsion solvent diffusion technique. During process optimization various parameters were studied such as: drug: polymer ratio, polymer ratio, concentration of emulsifier and stirring speed. Selected optimized formulations were studied for SEM, entrapment, floating behavior, drug release and kinetics. In-vivo floating ability (X-ray) study and in-vivo antidiabetic activity were performed on alloxan induced diabetic rats. Microspheres prepared with different viscosity grade HPMC were spherical shaped with smooth surface. Size of microspheres was in the range of 181.1–248 μm. Good entrapment and buoyancy were observed for 12 h. X-ray image showed that optimized formulation remained buoyant for more than 6 h. Optimized formulation treated group shows significant (p < 0.01) reduction in blood glucose level as compared to pure drug treated group. Repaglinide loaded floating microspheres expected to give new choice for safe, economical and increased bioavailable formulation for effective management of NIDDM.
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79
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Amoli-Diva M, Pourghazi K, Mashhadizadeh MH. Magnetic pH-responsive poly(methacrylic acid–co-acrylic acid)-co-polyvinylpyrrolidone magnetic nano-carrier for controlled delivery of fluvastatin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 47:281-9. [DOI: 10.1016/j.msec.2014.11.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 10/16/2014] [Accepted: 11/06/2014] [Indexed: 10/24/2022]
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80
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Chen YC, Ho HO, Liu DZ, Siow WS, Sheu MT. Swelling/floating capability and drug release characterizations of gastroretentive drug delivery system based on a combination of hydroxyethyl cellulose and sodium carboxymethyl cellulose. PLoS One 2015; 10:e0116914. [PMID: 25617891 PMCID: PMC4305323 DOI: 10.1371/journal.pone.0116914] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Accepted: 12/16/2014] [Indexed: 11/24/2022] Open
Abstract
The aim of this study was to characterize the swelling and floating behaviors of gastroretentive drug delivery system (GRDDS) composed of hydroxyethyl cellulose (HEC) and sodium carboxymethyl cellulose (NaCMC) and to optimize HEC/NaCMC GRDDS to incorporate three model drugs with different solubilities (metformin, ciprofloxacin, and esomeprazole). Various ratios of NaCMC to HEC were formulated, and their swelling and floating behaviors were characterized. Influences of media containing various NaCl concentrations on the swelling and floating behaviors and drug solubility were also characterized. Finally, release profiles of the three model drugs from GRDDS formulation (F1-4) and formulation (F1-1) were examined. Results demonstrated when the GRDDS tablets were tested in simulated gastric solution, the degree of swelling at 6 h was decreased for each formulation that contained NaCMC in comparison to those in de-ionized water (DIW). Of note, floating duration was enhanced when in simulated gastric solution compared to DIW. Further, the hydration of tablets was found to be retarded as the NaCl concentration in the medium increased resulting in smaller gel layers and swelling sizes. Dissolution profiles of the three model drugs in media containing various concentrations of NaCl showed that the addition of NaCl to the media affected the solubility of the drugs, and also their gelling behaviors, resulting in different mechanisms for controlling a drug’s release. The release mechanism of the freely water-soluble drug, metformin, was mainly diffusion-controlled, while those of the water-soluble drug, ciprofloxacin, and the slightly water-soluble drug, esomeprazole, were mainly anomalous diffusion. Overall results showed that the developed GRDDS composed of HEC 250HHX and NaCMC of 450 cps possessed proper swelling extents and desired floating periods with sustained-release characteristics.
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Affiliation(s)
- Ying-Chen Chen
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Hsiu-O Ho
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Der-Zen Liu
- Graduate Institute of Biomedical Materials and Engineering, Taipei Medical University, Taipei, Taiwan
- Center for General Education, Hsuan Chuang University, Hsinchu, Taiwan
| | - Wen-Shian Siow
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Ming-Thau Sheu
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
- Cancer and Chinese Herb Research Center, Taipei Medical University Hospital, Taipei, Taiwan
- * E-mail:
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81
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Kaushik AY, Tiwari AK, Gaur A. Role of excipients and polymeric advancements in preparation of floating drug delivery systems. Int J Pharm Investig 2015; 5:1-12. [PMID: 25599027 PMCID: PMC4286829 DOI: 10.4103/2230-973x.147219] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Since decade or two, the development of floating drug delivery systems becomes a significant and novel tool as having low density than gastric content. There are various advanced polymers including chitosan, eudragit, etc., and excipients such as; pore forming agent, surfactants, etc. All of them are discussed briefly, and results are concluded from various reputed researches. We have discussed all natural and synthetic systems with their effect on the release and other parameters which are essential for the floating formulation development.
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Affiliation(s)
- Avinash Y Kaushik
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Jaipur National University, Jaipur, India
| | - Ajay K Tiwari
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Jaipur National University, Jaipur, India
| | - Ajay Gaur
- Department of Pharmaceutics, Lachoo Memorial College of Science and Technology, Jodhpur, Rajasthan, India
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82
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Design and evaluation of polyox and pluronic controlled gastroretentive delivery of troxipide. JOURNAL OF DRUG DELIVERY 2014; 2014:804616. [PMID: 25505995 PMCID: PMC4253710 DOI: 10.1155/2014/804616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 10/09/2014] [Accepted: 10/22/2014] [Indexed: 11/18/2022]
Abstract
Objective. Objective of the present work was to develop site-specific gastroretentive drug delivery of Troxipide using polymers Pluronic F127 and Polyox 205 WSR. Troxipide is a novel gastroprotective agent with antiulcer, anti-inflammatory, and mucus secreting properties with elimination half-life of 7.4 hrs. Troxipide inhibits H. pylori-derived urease. It is mainly absorbed from stomach. Methods. 32 factorial design was applied to study the effect of independent variable. Effects of concentration of polymer on dependant variables as swelling index, hardness, and % drug release were studied. Pluronic F127 and Polyox 205 WSR were used as rate controlled polymer. Sodium bicarbonate and citric acid were used as effervescent-generating agent. Results. From the factorial batches, it was observed that formulation F5 (19% Pluronic F127 and 80% Polyox 205 WSR) showed optimum controlled drug release (98.60% ± 1.82) for 10 hrs with ability to float >12 hrs. Optimized formulation characterized by FTIR and DSC studies confirmed no chemical interactions between drug and polymer. Gastroretention for 6 hrs for optimized formulations was confirmed by in vivo X-ray placebo study. Conclusion. Results demonstrated feasibility of Troxipide in the development of gastroretentive site-specific drug delivery.
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83
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Lee WL, Tan JWM, Tan CN, Loo SCJ. Modulating drug release from gastric-floating microcapsules through spray-coating layers. PLoS One 2014; 9:e114284. [PMID: 25470374 PMCID: PMC4254999 DOI: 10.1371/journal.pone.0114284] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 11/09/2014] [Indexed: 11/19/2022] Open
Abstract
Floating dosage forms with prolonged gastric residence time have garnered much interest in the field of oral delivery. However, studies had shown that slow and incomplete release of hydrophobic drugs during gastric residence period would reduce drug absorption and cause drug wastage. Herein, a spray-coated floating microcapsule system was developed to encapsulate fenofibrate and piroxicam, as model hydrophobic drugs, into the coating layers with the aim of enhancing and tuning drug release rates. Incorporating fenofibrate into rubbery poly(caprolactone) (PCL) coating layer resulted in a complete and sustained release for up to 8 h, with outermost non-drug-holding PCL coating layer serving as a rate-controlling membrane. To realize a multidrug-loaded system, both hydrophilic metformin HCl and hydrophobic fenofibrate were simultaneously incorporated into these spray-coated microcapsules, with metformin HCl and fenofibrate localized within the hollow cavity of the capsule and coating layer, respectively. Both drugs were observed to be completely released from these coated microcapsules in a sustained manner. Through specific tailoring of coating polymers and their configurations, piroxicam loaded in both the outer polyethylene glycol and inner PCL coating layers was released in a double-profile manner (i.e. an immediate burst release as the loading dose, followed by a sustained release as the maintenance dose). The fabricated microcapsules exhibited excellent buoyancy in simulated gastric fluid, and provided controlled and sustained release, thus revealing its potential as a rate-controlled oral drug delivery system.
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Affiliation(s)
- Wei Li Lee
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore
| | - Jun Wei Melvin Tan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore
| | - Chaoyang Nicholas Tan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore
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84
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He W, Li Y, Zhang R, Wu Z, Yin L. Gastro-floating bilayer tablets for the sustained release of metformin and immediate release of pioglitazone: preparation and in vitro/in vivo evaluation. Int J Pharm 2014; 476:223-31. [PMID: 25283698 DOI: 10.1016/j.ijpharm.2014.09.056] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/17/2014] [Accepted: 09/29/2014] [Indexed: 11/15/2022]
Abstract
Owing to the complementary mechanisms of action of metformin hydrochloride (MH) and pioglitazone hydrochloride (PG), combination therapy for type 2 diabetes mellitus using the two drugs is highly desired; on the other hand, MH is not well absorbed in lower gastrointestinal tract and has a short half-life, therefore compromising the therapeutic effects. Herein, the present study was to develop gastro-floating bilayer matrix tablets in which the two drugs were incorporated into two separate layers, aiming at sustaining MH release with enhanced absorption and achieving immediate release of PG. The tablets of the optimized formulation floated on the test medium for more than 24 h with 5 min of floating lag time, and sustained MH release for 12 h via a diffusion-dependent manner; and complete release of PG within 5 min were achieved. Moreover, a steady plasma concentration of MH with a 1.5-fold increase in bioavailability, decreased C(max) and reduced T(max) was obtained, and the in vivo behavior of PG was similar to the marked product. Summarily, sustained MH release with improved absorption and immediate release of PG were obtained simultaneously using the gastro-floating bilayer tablet, allowing strengthened combination therapy for diabetes mellitus.
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Affiliation(s)
- Wei He
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Yongji Li
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Rao Zhang
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Zhannan Wu
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Lifang Yin
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China.
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85
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Tadros MI, Fahmy RH. Controlled-release triple anti-inflammatory therapy based on novel gastroretentive sponges: Characterization and magnetic resonance imaging in healthy volunteers. Int J Pharm 2014; 472:27-39. [DOI: 10.1016/j.ijpharm.2014.06.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 06/01/2014] [Accepted: 06/08/2014] [Indexed: 01/24/2023]
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86
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Eberle VA, Schoelkopf J, Gane PA, Alles R, Huwyler J, Puchkov M. Floating gastroretentive drug delivery systems: Comparison of experimental and simulated dissolution profiles and floatation behavior. Eur J Pharm Sci 2014; 58:34-43. [DOI: 10.1016/j.ejps.2014.03.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 01/17/2014] [Accepted: 03/10/2014] [Indexed: 10/25/2022]
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87
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El-Said IA, Aboelwafa AA, Khalil RM, ElGazayerly ON. Baclofen novel gastroretentive extended release gellan gum superporous hydrogel hybrid system: in vitro and in vivo evaluation. Drug Deliv 2014; 23:101-12. [PMID: 24786486 DOI: 10.3109/10717544.2014.905654] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Baclofen is a centrally acting skeletal muscle relaxant with a short elimination half-life, which results in frequent daily dosing and subsequent poor patient compliance. The narrow absorption window of baclofen in the upper gastrointestinal tract limits its formulation as extended release dosage forms. In this study, baclofen extended release superporous hydrogel (SPH) systems, including conventional SPH, SPH composite and SPH hybrid (SPHH), were prepared aiming to increase the residence of baclofen at its absorption window. The applicability of different polymers, namely, gellan gum, guar gum, polyvinyl alcohol and gelatin, was investigated in preparation of SPHH systems. The prepared SPH systems were evaluated regarding weight and volume swelling ratio, porosity, mechanical properties, incorporation efficiency, degree of erosion and drug release. In vivo assessment was performed in dogs to evaluate gastric residence time by X-ray studies. In addition, the oral bioavailability of baclofen relative to commercially available Lioresal® immediate release tablets was also investigated. The novel baclofen gellan SPHH cross linked with calcium chloride was characterized by optimum mechanical properties, acceptable swelling properties as well as extended drug release. It also exhibited a prolonged plasma profile when compared to twice daily administered Lioresal®.
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Affiliation(s)
- Ibrahim A El-Said
- a Department of Pharmaceutics and Industrial pharmacy, Faculty of Pharmacy , Cairo University , Cairo , Egypt and
| | - Ahmed A Aboelwafa
- a Department of Pharmaceutics and Industrial pharmacy, Faculty of Pharmacy , Cairo University , Cairo , Egypt and
| | - Rawia M Khalil
- b Department of Pharmaceutical technology , National Research Center , Cairo , Egypt
| | - Omaima N ElGazayerly
- a Department of Pharmaceutics and Industrial pharmacy, Faculty of Pharmacy , Cairo University , Cairo , Egypt and
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88
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Kharia AA, Singhai AK. Effective parameters for formulation of gastro adhesive nanoparticles: screening by design-of-experiments approach. J Microencapsul 2014; 31:399-405. [PMID: 24697180 DOI: 10.3109/02652048.2013.863398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The objective of this study was selection of most influential variable for the preparation of gastro adhesive nanoparticles of acyclovir. Effect of formulation and processing variables on various response variables were studied by a Taguchi standard orthogonal array L8 design. Independent variables studied were the amount of gelatin, amount of glutaraldehyde, amount of Pluronic F-68, acetone addition rate, pH, stirring time and stirring speed. The size of all nanoparticulate formulations prepared as per the experimental design (Taguchi screening design) varied between 165 and 1610 nm, PDI between 0.360 and 1.00, Q6 between 7.31-34.93%, T60% between 19.2-37.6 h, entrapment efficiency between 15.70 and 83.12%, loading efficiency between 39.72 and 80.49% and mucoadhesive strength between 3.959-11.02 g. Pareto ranking analyses showed that the two most important factors affecting the selected responses were amount of gelatin and amount of Pluronic F-68 (p < 0.05).
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Affiliation(s)
- Ankit Anand Kharia
- Department of Pharmaceutics, Oriental College of Pharmacy , Bhopal, Madhya Pradesh , India
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89
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Upadhyay P, Pandit JK, Wahi AK. Studies on biological macromolecules lipid-Gelucire based gastroretentive multiparticulate. Int J Biol Macromol 2014; 67:463-77. [PMID: 24699418 DOI: 10.1016/j.ijbiomac.2014.03.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 03/22/2014] [Accepted: 03/24/2014] [Indexed: 01/22/2023]
Abstract
Studies on biological macromolecules lipid-Gelucire based sustained release gastroretentive multiparticulates of metformin hydrochloride (MH) were developed by dispersing MH in melted Gelucire 39/01 and 43/01 using the melt granulation technique while fast release solid dispersions gastroretentive multiparticulates of glibenclamide (GLB), poorly soluble drug were developed using Gelucire 50/13 and PEG 200, 400, 4000, 6000 as carrier at different ratios. Percent drug entrapment of MH was 99.6±0.35% and in vitro floating ability was 11.3±0.47h. Model dependent analysis shows that zero order kinetics was followed while drug release mechanism was anomalous diffusion controlled. Combination of ethylcellulose, methylcellulose and microcrystalline cellulose with Gelucire were explored for release of drug, floatability and consistency for optimized formulation. While GLB multiparticulates showed entrapment efficiency of 99.8±0.11%, in vitro buoyancy for 11±0.2h and improved solubility and dissolution rate. Zero order kinetics was promising for all formulations. Model independent analysis f2 value for GIV was 40 while for M II was 54. Characterization was done by SEM, FTIR and PXRD. RP-HPLC method was adopted for simultaneous pharmacokinetic analysis of the drugs in rat plasma. In IVIVC studies confirm increased bioavailability of drugs in combination form and followed level A correlation using the diabetic type II Wistar rat.
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Affiliation(s)
- Prashant Upadhyay
- Department of Pharmaceutics, College of Pharmacy, IFTM, Moradabad 244102, Uttar Pradesh, India; Uttar Pradesh Technical University, Lucknow, India.
| | - Jayanta Kumar Pandit
- Department of Pharmaceutics, IIT-Banaras Hindu University (BHU), Varanasi, Uttar Pradesh 221010, India
| | - Arun Kumar Wahi
- Department of Pharmaceutics, IIT-Banaras Hindu University (BHU), Varanasi, Uttar Pradesh 221010, India
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90
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Jain A, Pandey V, Ganeshpurkar A, Dubey N, Bansal D. Formulation and characterization of floating microballoons of Nizatidine for effective treatment of gastric ulcers in murine model. Drug Deliv 2014; 22:306-11. [DOI: 10.3109/10717544.2014.891273] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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91
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Patil SH, Talele GS. Natural gum as mucoadhesive controlled release carriers: evaluation of cefpodoxime proxetil by D-optimal design technique. Drug Deliv 2014; 21:118-29. [PMID: 24032629 DOI: 10.3109/10717544.2013.834416] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The present study deals with the development of mucoadhesive controlled release tablets of Cefpodoxime Proxetil to increase the gastric residence time and thus prolong drug release, reduce dosing frequency and improve oral bioavailability. Tablets were prepared using sodium alginate and karaya gum, a natural polymer, with a synthetic polymer hydroxypropylmethylcellulose (K100LV) and Karaya gum with HPMC K100LV in various ratios to optimize the drug release profile using D-Optimal technique. Pre- and post-compression parameters of tablets prepared with various formulations (S1-S9, C1-C9) were evaluated. The FTIR and DSC studies revealed that no physiochemical interaction between excipients and drug. The formulation S7 showed prolonged drug release, and the mechanism of drug release from the optimized formulation was confirmed using the Korsmeyer-Peppas model to be non-Fickian release transport and n value was found 0.605 indicating both diffusion and erosion mechanism from these natural gums. The optimized formulation showed mucoadhesive strength >35 g. An in vivo study was performed on rabbits using an X-ray imaging technique. The radiological evidence suggests that the tablets adheres (more than 10 hours) to a rabbit's stomach. No significant changes were found in the physical appearance, drug content, mucoadhesive study and in vitro dissolution pattern after storage at 40 °C/75% relative humidity for 3 months.
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Affiliation(s)
- Satish H Patil
- Department of Pharmaceutics, R.C. Patel Institute of Pharmaceutical Education and Research , Shirpur (M.S), Maharashtra , India and
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92
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Kim JY, Seo JW, Rhee YS, Park CW, Park ES. Freeze-Dried Highly Porous Matrix as a New Gastroretentive Dosage Form for Ecabet Sodium: In Vitro and In Vivo Characterizations. J Pharm Sci 2014. [DOI: 10.1002/jps.23798] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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93
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Vanitha K, Varma M, Ramesh A. Floating tablets of hydralazine hydrochloride: optimization and evaluation. BRAZ J PHARM SCI 2013. [DOI: 10.1590/s1984-82502013000400021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hydralazine hydrochloride has a half-life of 2 to 4 hours with an oral bioavailability of 26-50%. Since hydralazine has a demethylating effect on various suppressor genes, it can be used in various types of cancer to support chemotherapy. The purpose of this study was to optimize and evaluate floating tablets of hydralazine hydrochloride designed to prolong the gastric residence time and to provide controlled release of the drug for 14 h. The floating tablets of hydralazine hydrochloride were prepared by the wet granulation method. Semi-synthetic polymers of hydroxy propyl methyl cellulose (HPMC K100M) and ethyl cellulose were used as the release retarding agents. A 2² factorial design was applied to systematically optimize the drug release profile. The concentrations of HPMC K100M and ethyl cellulose were optimized to provide controlled release of hydralazine for 14h. Non-Fickian diffusion release transport was confirmed as the release mechanism for the optimized formulation and the predicted values agreed well with the experimental values. Drug excipient compatibility studies were investigated by FTIR, DSC and XRD. These data indicate that there were no chemical interactions between the drug and the polymer. In vivo X-ray imaging showed floating tablet performance in rabbits.
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Affiliation(s)
- Kondi Vanitha
- Vishnu Institute of Pharmaceutical Education and Research, India
| | | | - Alluri Ramesh
- Vishnu Institute of Pharmaceutical Education and Research, India
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94
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Hintzen F, Hauptstein S, Perera G, Bernkop-Schnürch A. Synthesis and in vitro characterization of entirely S-protected thiolated pectin for drug delivery. Eur J Pharm Biopharm 2013; 85:1266-73. [PMID: 24095893 DOI: 10.1016/j.ejpb.2013.09.017] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 09/24/2013] [Accepted: 09/27/2013] [Indexed: 11/28/2022]
Abstract
The study was aimed to synthesize a thiolated polymer (thiomer) that is resistant to oxidation in solutions above pH 5. In order to protect a pectin-cysteine conjugate against premature oxidation, the thiomer was S-protected by a disulfide connected leaving group. Therefore, 2-mercaptonicotinic acid was first coupled to L-cysteine by a disulfide exchange reaction and the purified product was subsequently attached to pectin by a carbodiimide mediated amid bond formation. The obtained fully S-protected thiolated pectin was in vitro characterized with respect to co- and mucoadhesive properties and stability toward oxidation. The results indicated a 1.8-fold and 2.3-fold enhanced disintegration time at pH 6.8 of the S-protected thiolated pectin (Pec-Cys-MNA) compared to thiolated pectin (Pec-Cys) and unmodified pectin (Pec). Moreover, rheological measurements of polymer/mucus mixtures showed a 1.6-fold (compared to Pec-Cys) and 6.7-fold (compared to Pec) increased dynamic viscosity of Pec-Cys-MNA. On the other hand, in the presence of a strong oxidizing agent such as H2O2 (0.3% v/v), no increase in viscosity of Pec-Cys-MNA could be observed. A 6-month experiment also demonstrated the long-term stability of a liquid formulation based on Pec-Cys-MNA. Further investigations proved that the first time all thiol groups on a thiolated polymer could be protected owing to the novel synthesis. Accordingly, these features may help to develop thiomer based liquid or gel formulations targeting mucosal surfaces such as nasal, ocular or vaginal drug delivery systems.
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Affiliation(s)
- Fabian Hintzen
- Department of Pharmaceutical Technology, Institute of Pharmacy, Center for Molecular Biosciences, Leopold-Franzens-University Innsbruck, Center for Chemistry and Biomedicine, Innsbruck, Austria
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95
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Ma L, Deng L, Chen J. Applications of poly(ethylene oxide) in controlled release tablet systems: a review. Drug Dev Ind Pharm 2013; 40:845-51. [DOI: 10.3109/03639045.2013.831438] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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96
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Screening of Most Effective Variables for Development of Gastroretentive Mucoadhesive Nanoparticles by Taguchi Design. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/348095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The objective of this study was the selection of the most influential variable for the preparation of gastroretentive mucoadhesive nanoparticles of acyclovir. Nanoparticles were prepared by one-step desolvation method; effect of formulation and processing variables on various response variables were studied by a Taguchi standard orthogonal array L8 design. Independent variables studied were the amount of gelatin, amount of glutaraldehyde, amount of Pluronic F-68, acetone addition rate, pH, stirring time, and stirring speed. The dependent variables studied were the particle size, polydispersity index, amount of drug released in 6 h, time required to release 60% of drug, entrapment efficiency, loading efficiency, and mucoadhesiveness. The size of all nanoparticulate formulations prepared as per the experimental design (Taguchi screening design) varied between 165 and 1610 nm, PDI between 0.360 and 1.00, bioadhesiveness between 3.959 and 11.02 g, cumulative percent drug release in 24 h between 40.74 and 72.48, entrapment efficiency between 15.70 and 83.12, and loading efficiency between 39.72 and 80.49. Pareto ranking analyses showed that the two most important factors affecting the selected responses were amount of gelatin and amount of Pluronic F-68 (P<0.05).
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97
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Yin L, Qin C, Chen K, Zhu C, Cao H, Zhou J, He W, Zhang Q. Gastro-floating tablets of cephalexin: Preparation and in vitro/in vivo evaluation. Int J Pharm 2013; 452:241-8. [DOI: 10.1016/j.ijpharm.2013.05.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 04/28/2013] [Accepted: 05/03/2013] [Indexed: 11/29/2022]
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98
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Ketorolac tromethamine floating beads for oral application: Characterization and in vitro/in vivo evaluation. Saudi Pharm J 2013; 22:349-59. [PMID: 25161380 DOI: 10.1016/j.jsps.2013.06.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 06/23/2013] [Indexed: 11/21/2022] Open
Abstract
The floating beads have been employed to make a sustained release of the drug in the stomach and to decrease the dose of the drug and hence overcome its side effects. The common benefits of the floating beads were it is easy preparation, without the need of a high temperature, and high percentage of the drug entrapment. In the present work, the Ketorolac tromethamine (KT) floating beads were prepared by extrusion congealing method utilizing calcium carbonate as a gas forming agent. The physical characters of the produced beads were investigated such as KT yield, KT loading, and entrapment efficiency of the drug. In addition, floating behavior, swelling, particle size, morphology and KT stability were also evaluated. In vitro drug release study was carried out, and the kinetics of the release was evaluated using the linear regression method. Furthermore, the in vivo analgesic effect of KT after oral administration of the selected formula of floating beads (F10) was carried out using hot plate and tail flick methods. Oral commercial KT tablets and KT solution were used for the comparison. The prepared beads remained floated for more than 8 h. The optimized formulation (F10) exhibited prolonged drug release (more than 8 h) and the drug release follows the Higuchi kinetic model, with a Fickian diffusion mechanism according to Korsmeyer-Peppas (n = 0.466). Moreover, F10 showed a sustained analgesic effect as compared to the commercial tablet.
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99
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Jivani RR, Patel CN, Jivani NP. Statistical Design of Experiments on Fabrication of Bilayer Tablet of Narrow Absorption Window Drug: Development and In vitro characterisation. Indian J Pharm Sci 2013; 74:302-11. [PMID: 23626385 PMCID: PMC3630725 DOI: 10.4103/0250-474x.107049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2011] [Revised: 08/06/2012] [Accepted: 08/11/2012] [Indexed: 12/04/2022] Open
Abstract
The current study involves the fabrication of oral bioadhesive bilayer matrices of narrow absorption window drug baclofen and the optimisation of their in vitro drug release and characterisation. Statistical design of experiments, a computer-aided optimisation technique, was used to identify critical factors, their interactions and ideal process conditions that accomplish the targeted response(s). A central composite design was employed to systematically optimise the drug delivery containing a polymer, filler and compression force. The values of ratio of different grades of hydroxypropyl methylcellulose, microcrystalline cellulose and compression force were varied to be fitted in design. Drug release at 1 h (Q1), 4 h (Q4), 8 h (Q8), 12 h (Q12), and hardness were taken as responses. Tablets were prepared by direct compression methods. The compressed tablets were evaluated for their hardness, weight variation, friability, content uniformity and diameter. Counter plots were drawn and optimum formulation was selected by desirability function. The formulations were checked for their ex vivo mucoadhesion. The experimental value of Q1, Q4, Q8, Q12 and hardness for check-point batch was found to be 31.64, 45.82, 73.27, 98.95% and 4.4 kg/cm2, respectively. The release profile indicates Highuchi kinetics (Fickian transport) mechanism. The results of the statistical analysis of the data demonstrated significant interactions amongst the formulation variables, and the desirability function was demonstrated to be a powerful tool to predict the optimal formulation for the bilayer tablet.
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Affiliation(s)
- R R Jivani
- Department of Pharmaceutics, C. U. Shah College of Pharmacy and Research, Wadhwan-363 030, India
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100
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Raft forming system-an upcoming approach of gastroretentive drug delivery system. J Control Release 2013; 168:151-65. [PMID: 23500062 DOI: 10.1016/j.jconrel.2013.02.028] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 02/22/2013] [Accepted: 02/26/2013] [Indexed: 11/21/2022]
Abstract
In recent era various technologies have been made in research and development of controlled release oral drug delivery system to overcome various physiological difficulties such as variation in gastric retention and emptying time. To overcome this drawback and to maximize the oral absorption of various drugs, novel drug delivery systems have been developed. Gastroretentive drug delivery system is facing many challenges which can be overcome by upcoming newly emerging approach i.e. raft forming system. The purpose of writing this review is to focus on recent development of stomach specific floating drug delivery system to circumvent the difficulties associated with formulation design. Various gastroretentive approaches that have been developed till now are also discussed. The present study provides valuable information & highlights advances in this raft forming system. This review attempts to discuss various factors like physiological factors, physicochemical factors and formulation factors to be considered in the development of the raft forming system. Different types of smart polymers used for their formulation have also been summarized. The review focuses on the mechanism, formulation and development of the raft forming system. This review also summarizes the studies to evaluate the performance and application of these systems. The study finally highlights advantages, disadvantages, and marketed preparation of the raft forming system.
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