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Bhatt S, Roy D, Kumar M, Saharan R, Malik A, Saini V. Development and Validation of In Vitro Discriminatory Dissolution Testing Method for Fast Dispersible Tablets of BCS Class II Drug. Turk J Pharm Sci 2020; 17:74-80. [PMID: 32454764 DOI: 10.4274/tjps.galenos.2018.90582] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 10/25/2018] [Indexed: 12/01/2022]
Abstract
Objectives Fast dispersible tablets (FDTs) get dispersed very fast due to which the discrimination of in vitro drug release and their evaluation is difficult. Hence in the present study a new in vitro discriminatory dissolution method was developed and validated for FDTs of domperidone of BCS class II. Materials and Methods FDTs of domperidone were prepared by direct compression method. The dissolution studies were performed in an eight-station Electrolab TDT-082 dissolution testing apparatus, analyzed by ultraviolet spectrophotometer and evaluated in different dissolution mediums i.e. sodium lauryl sulphate (0.5%, 1.0% and 1.5%) with fresh distilled water, simulated intestinal fluid pH 6.8, simulated gastric fluid pH 1.2 without enzymes, phosphate buffer solution (pH 6.8) and 0.1 N hydrochloric acid at different agitation speeds. Results The developed method was validated in terms of specificity, accuracy, precision, linearity and robustness. Amongst the different mediums, 0.5% sodium lauryl sulfate (SLS) with distilled water was found to be optimum with higher rate of discriminatory power. The percentage recovery was found to be 96 to 100.12 % and the % relative standard deviation value for precision (intraday and interday) was found to be less than 1%. Also a dissolution profile of prepared FDTs were compared in distilled water containing 0.5% SLS using similarity (f2) and dissimilarity (f1) factor calculation which showed dissimilarity in release profile and confirms the discriminatory nature of developed method. Conclusion The discriminatory dissolution method for FDTs was developed and validated. All the obtained results were satisfactory, accurate and in range. The current method could be beneficial for formulation development and for assessment of quality of FDTs.
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Affiliation(s)
- Shailendra Bhatt
- Maharishi Markandeshwar (Deemed to be University), Maharishi Markandeshwar College of Pharmacy, Department of Pharmaceutics, Haryana, India
| | - Dabashis Roy
- Maharishi Markandeshwar (Deemed to be University), Maharishi Markandeshwar College of Pharmacy, Department of Pharmaceutics, Haryana, India
| | - Manish Kumar
- Maharishi Markandeshwar (Deemed to be University), Maharishi Markandeshwar College of Pharmacy, Department of Pharmaceutics, Haryana, India
| | - Renu Saharan
- Maharishi Markandeshwar (Deemed to be University), Maharishi Markandeshwar College of Pharmacy, Department of Pharmaceutics, Haryana, India
| | - Anuj Malik
- Maharishi Markandeshwar (Deemed to be University), Maharishi Markandeshwar College of Pharmacy, Department of Pharmaceutics, Haryana, India
| | - Vipin Saini
- Maharishi Markandeshwar University, Solan, India
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Kanchi S, Sabela M, Singh P, Bisetty K. Multivariate optimization of differential pulse polarographic–catalytic hydrogen wave technique for the determination of nickel(II) in real samples. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.07.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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3
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Tan Y, Si X, Zhong L, Feng X, Yang X, Huang M, Wu C. Development and validation of dissolution testings in acidic media for rabeprazole sodium delayed-release capsules. Drug Dev Ind Pharm 2016; 42:1669-77. [PMID: 27066697 PMCID: PMC4975097 DOI: 10.3109/03639045.2016.1161644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Rabeprazole sodium (RAB) dissolved in acidic media is accompanied by its degradation in the course of dissolution testing. To develop and establish the accumulative release profiles of ACIPHEX® Sprinkle (RAB) delayed-release capsules (ACIPHEX® Sprinkle) in acidic media using USP apparatus 2 (paddle apparatus) as a dissolution tester, the issues of determination of accumulative release amount of RAB in these acidic media and interference of hydroxypropylmethyl cellulose phthalate were solved by adding appropriate hydrochloric acid (HCl) into dissolution samples coupled with centrifugation so as to remove the interference and form a solution of degradation products of RAB, which is of a considerably stable ultraviolet (UV) absorbance at the wavelength of 298 nm within 2.0 h. Therefore, the accumulative release amount of RAB in dissolution samples at each sample time points could be determined by UV-spectrophotometry, and the accumulative release profiles of ACIPHEX® Sprinkle in the media of pH 1.0, pH 6.0, and pH 6.8 could be established. The method was validated per as the ICH Q2 (R1) guidelines and demonstrated to be adequate for quality control of ACIPHEX® Sprinkle and the accumulative release profiles can be used as a tool to guide the formulation development and quality control of a generic drug for ACIPHEX® Sprinkle.
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Affiliation(s)
- Yinhe Tan
- a School of Pharmaceutical Sciences, Sun Yat-Sen University , Guangzhou , China ;,b Research and Development Center of Pharmaceutical Engineering , Sun Yat-Sen University , Guangzhou , China ;,c Guangdong Bidi Pharmaceutical Co. Ltd. , Kaiping , China
| | - Xiaoqing Si
- c Guangdong Bidi Pharmaceutical Co. Ltd. , Kaiping , China
| | - Lulu Zhong
- c Guangdong Bidi Pharmaceutical Co. Ltd. , Kaiping , China
| | - Xin Feng
- d Department of Pharmaceutics and Drug Delivery , School of Pharmacy, University of Mississippi , Oxford , MS , USA
| | - Xinmin Yang
- c Guangdong Bidi Pharmaceutical Co. Ltd. , Kaiping , China
| | - Min Huang
- a School of Pharmaceutical Sciences, Sun Yat-Sen University , Guangzhou , China
| | - Chuanbin Wu
- a School of Pharmaceutical Sciences, Sun Yat-Sen University , Guangzhou , China ;,b Research and Development Center of Pharmaceutical Engineering , Sun Yat-Sen University , Guangzhou , China
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4
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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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5
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Betz M, García-González C, Subrahmanyam R, Smirnova I, Kulozik U. Preparation of novel whey protein-based aerogels as drug carriers for life science applications. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2012.08.019] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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6
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Ahmed IS, Shamma RN, Shoukri RA. Development and optimization of lyophilized orally disintegrating tablets using factorial design. Pharm Dev Technol 2011; 18:935-43. [DOI: 10.3109/10837450.2011.619543] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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7
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Singh B, Kapil R, Nandi M, Ahuja N. Developing oral drug delivery systems using formulation by design: vital precepts, retrospect and prospects. Expert Opin Drug Deliv 2011; 8:1341-60. [DOI: 10.1517/17425247.2011.605120] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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Pund S, Joshi A, Vasu K, Nivsarkar M, Shishoo C. Gastroretentive delivery of rifampicin: In vitro mucoadhesion and in vivo gamma scintigraphy. Int J Pharm 2011; 411:106-12. [DOI: 10.1016/j.ijpharm.2011.03.048] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 03/20/2011] [Accepted: 03/22/2011] [Indexed: 10/18/2022]
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9
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Zidan AS, Mokhtar M. Multivariate Optimization of Formulation Variables Influencing Flurbiprofen Proniosomes Characteristics. J Pharm Sci 2011; 100:2212-21. [DOI: 10.1002/jps.22453] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 11/10/2010] [Accepted: 11/25/2010] [Indexed: 11/11/2022]
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10
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Pund S, Joshi A, Vasu K, Nivsarkar M, Shishoo C. Multivariate optimization of formulation and process variables influencing physico-mechanical characteristics of site-specific release isoniazid pellets. Int J Pharm 2010; 388:64-72. [DOI: 10.1016/j.ijpharm.2009.12.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Revised: 12/09/2009] [Accepted: 12/16/2009] [Indexed: 10/20/2022]
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11
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Reddy D, Pillay V, Choonara YE, du Toit LC. Rapidly disintegrating oramucosal drug delivery technologies. Pharm Dev Technol 2009; 14:588-601. [DOI: 10.3109/10837450902838700] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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12
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Gray V, Kelly G, Xia M, Butler C, Thomas S, Mayock S. The science of USP 1 and 2 dissolution: present challenges and future relevance. Pharm Res 2009; 26:1289-302. [PMID: 19165579 DOI: 10.1007/s11095-008-9822-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2008] [Accepted: 12/24/2008] [Indexed: 12/01/2022]
Abstract
Since its inception, the dissolution test has come under increasing levels of scrutiny regarding its relevance, especially to the correlation of results to levels of drug in blood. The technique is discussed, limited to solid oral dosage forms, beginning with the scientific origins of the dissolution test, followed by a discussion of the roles of dissolution in product development, consistent batch manufacture (QC release), and stability testing. The ultimate role of dissolution testing, "to have the results correlated to in vivo results or in vivo in vitro correlation," is reviewed. The recent debate on mechanical calibration versus performance testing using USP calibrator tablets is presented, followed by a discussion of variability and hydrodynamics of USP Apparatus 1 and Apparatus 2. Finally, the future of dissolution testing is discussed in terms of new initiatives in the industry such as quality by design (QbD), process analytical technology (PAT), and design of experiments (DOE).
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Affiliation(s)
- Vivian Gray
- V. A. Gray Consulting, Inc., 9 Yorkridge Trail, Hockessin, DE 19707, USA.
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13
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Vanaja K, Shobha Rani R. Design of Experiments: Concept and Applications of Plackett Burman Design. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/10601330701220520] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Dissolution test for site-specific release isoniazid pellets in USP apparatus 3 (reciprocating cylinder): Optimization using response surface methodology. Eur J Pharm Biopharm 2008; 69:769-75. [DOI: 10.1016/j.ejpb.2007.11.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2007] [Revised: 11/30/2007] [Accepted: 11/30/2007] [Indexed: 11/18/2022]
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15
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Fernandes C, Junqueira RG, Campos LMM, Pianetti GA. Dissolution test for lamivudine tablets: optimization and statistical analysis. J Pharm Biomed Anal 2006; 42:601-6. [PMID: 16797911 DOI: 10.1016/j.jpba.2006.05.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Revised: 05/10/2006] [Accepted: 05/12/2006] [Indexed: 11/27/2022]
Abstract
A comparison of different methods for dissolution test used by five different manufacturer laboratories of lamivudine tablets is made, evaluated, and discussed. Dissolution medium (water and hydrochloric acid pH 1.2), apparatus (paddles and baskets) and time (30 and 60 min) were analyzed. The determination was accomplished by spectrophotometry at 270 nm. Analysis of variance (ANOVA) factorial design 5 x 2 x 2 x 2 with six repetitions, with post hoc multiple comparisons between means conducted by Duncan test at 0.05 significance level was used. After the comparative analysis of the results, optimal dissolution conditions were determined as follows: water as dissolution medium, paddles at the stirring speed of 50 rpm as apparatus and time of 30 min. The method was applied to the dissolution test of samples from eleven batches of tablets, produced by five different laboratories.
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Affiliation(s)
- Christian Fernandes
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos, 6627 Pampulha, CEP 31270-901, Belo Horizonte, MG, Brazil.
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16
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Garcia CV, Paim CS, Steppe M, Schapoval EES. Development and validation of a dissolution test for rabeprazole sodium in coated tablets. J Pharm Biomed Anal 2006; 41:833-7. [PMID: 16513316 DOI: 10.1016/j.jpba.2006.01.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2005] [Revised: 01/23/2006] [Accepted: 01/25/2006] [Indexed: 11/22/2022]
Abstract
The aim of this work is to develop and validate a dissolution test for rabeprazole sodium coated tablets using a reverse-phase liquid chromatographic method. After test sink conditions, dissolution medium and stability of the drug, the best conditions were: paddle at 75 rotations per minute (rpm) stirring speed, HCl 0.1 M and borate buffer pH 9.0 as dissolution medium for acidic and basic steps, respectively, volume of 900 ml for both. The quantitation method was also adapted and validated. Less than 10% of the label amount was released in the acid step, while more than 95% was achieved over 30 min in the basic one. The dissolution profile for tablets was considered satisfactory. The dissolution test developed was adequate for its purpose and could be applied for quality control of rabeprazole tablets, since there is no official monograph.
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Affiliation(s)
- Cassia V Garcia
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul., Av. Ipiranga, 2752 Lab. 402, Porto Alegre/RS, CEP 90610-000, Brazil.
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17
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Pillay V, Danckwerts MP, Muhidinov Z, Fassihi R. Novel modulation of drug delivery using binary zinc-alginate-pectinate polyspheres for zero-order kinetics over several days: experimental design strategy to elucidate the crosslinking mechanism. Drug Dev Ind Pharm 2005; 31:191-207. [PMID: 15773286 DOI: 10.1081/ddc-200047806] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A Box-Behnken design was applied to mathematically establish whether different degrees of crosslinking were induced by Zn2+ and Ca2+ ions in polyspheres composed of alginate and/or pectin, and the model drug ibuprofen. Based on their different crystal structures and coordination numbers, a theoretical model was proposed demonstrating that Zn2+ ions preferentially crosslink alginate and pectin. In addition, the lower coordination number of Zn2+ (4-6) would significantly retard hydration of both polymers, as opposed to Ca2+ (7-9). The responses studied for 28 statistically derived polyspheres included drug encapsulation efficiency, physicomechanical behavior, and in vitro drug release potential. Single-tailed Student's t-tests on data generated for the encapsulation efficiencies, primary facture values, and rupture energies indicated that Zn2+ was statistically superior (p<0.05) in crosslinking alginate and pectin. Further textural analysis revealed a good correlation between the Brinell hardness number and fracture load, while an inverse relationship was found for matrix tensile strength. Viscosity studies demonstrated different in situ crosslinking thresholds for Zn2+. The Durbin-Watson statistic and correlation coefficient revealed that the quadratic regression function was highly accurate in predicting the responses. Using a generalized reduced gradient algorithm on dissolution values obtained after 2 hours (t2h) provided optimized solutions for achieving zero-order release extending from 2 hours to 7 days. Mathematical simulations projected drug release from 25 to 50 days.
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Affiliation(s)
- Viness Pillay
- Department of Pharmacy and Pharmacology, University of the Witwatersrand, Johannesburg, Gauteng, South Africa.
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18
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Carvalho-Silva B, Moreira-Campos LM, Nunan EA, Vianna-Soares CD, Araujo-Alves BL, Cesar IC, Pianetti GA. Optimization and statistical evaluation of dissolution tests for indinavir sulfate capsules. ACTA ACUST UNITED AC 2004; 59:921-7. [PMID: 15544798 DOI: 10.1016/j.farmac.2004.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2004] [Accepted: 08/07/2004] [Indexed: 11/27/2022]
Abstract
An optimization, statistically based on t-student test, to set up dissolution test conditions for indinavir sulfate capsules is presented. Three dissolution media, including that reported in United States Pharmacopeial Forum, and two apparatus, paddle and basket, were applied. Two different indinavir sulfate capsules, products A and B, were evaluated. For a reliable statistical analysis eighteen capsules were assayed in each condition based on the combination of dissolution medium and apparatus. All tested media were statistically equivalent (P > 0.05) for both drug products when paddle apparatus was employed at the stirring speed of 50 rpm. The use of basket apparatus at the stirring speed of 50 rpm caused significant decrease in the drug release percent for the product B (P < 0.05). The best dissolution conditions tested, for products A and B, were applied to evaluate capsules dissolution profiles. Twelve dosage units were assayed and dissolution efficiency concept was used, for each condition, to obtain results with statistical significance (P > 0.05). Optimal conditions to carry out the dissolution test were 900 ml of 0.1 M hydrochloric acid as dissolution medium, basket at 100 rpm stirring speed and 260 nm ultraviolet detection.
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Affiliation(s)
- B Carvalho-Silva
- Laboratório de Controle de Qualidade de Produtos Farmacêuticos e Cosméticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Pampulha 31270-901, Belo Horizonte, MG, Brasil
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Sibanda W, Pillay V, Danckwerts MP, Viljoen AM, van Vuuren S, Khan RA. Experimental design for the formulation and optimization of novel cross-linked oilispheres developed for in vitro site-specific release of Mentha piperita oil. AAPS PharmSciTech 2004; 5:E18. [PMID: 15198539 PMCID: PMC2784852 DOI: 10.1208/pt050118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
A Plackett-Burman design was employed to develop and optimize a novel crosslinked calcium-aluminum-alginate-pectinate oilisphere complex as a potential system for the in vitro site-specific release of Mentha piperita, an essential oil used for the treatment of irritable bowel syndrome. The physicochemical and textural properties (dependent variables) of this complex were found to be highly sensitive to changes in the concentration of the polymers (0%-1.5% wt/vol), crosslinkers (0%-4% wt/vol), and crosslinking reaction times (0.5-6 hours) (independent variables). Particle size analysis indicated both unimodal and bimodal populations with the highest frequency of 2 mm oilispheres. Oil encapsulation ranged from 6 to 35 mg/100 mg oilispheres. Gravimetric changes of the crosslinked matrix indicated significant ion sequestration and loss in an exponential manner, while matrix erosion followed Higuchi's cube root law. Among the various measured responses, the total fracture energy was the most suitable optimization objective (R2 = 0.88, Durbin-Watson Index = 1.21%, Coefficient of Variation (CV) = 33.21%). The Lagrangian technique produced no significant differences (P > .05) between the experimental and predicted total fracture energy values (0.0150 vs 0.0107 J). Artificial Neural Networks, as an alternative predictive tool of the total fracture energy, was highly accurate (final mean square error of optimal network epoch approximately 0.02). Fused-coated optimized oilispheres produced a 4-hour lag phase followed by zero-order kinetics (n > 0.99), whereby analysis of release data indicated that diffusion (Fickian constant k1 = 0.74 vs relaxation constant k2 = 0.02) was the predominant release mechanism.
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Affiliation(s)
- Wilbert Sibanda
- />Department of Pharmacy and Pharmacology, Medical School, University of the Witwatersrand, 2193 Johannesburg, South Africa
| | - Viness Pillay
- />College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, 32307 Tallahassee, FL
| | - Michael P Danckwerts
- />Department of Pharmacy and Pharmacology, Medical School, University of the Witwatersrand, 2193 Johannesburg, South Africa
| | - Alvaro M Viljoen
- />Department of Pharmacy and Pharmacology, Medical School, University of the Witwatersrand, 2193 Johannesburg, South Africa
| | - Sandy van Vuuren
- />Department of Pharmacy and Pharmacology, Medical School, University of the Witwatersrand, 2193 Johannesburg, South Africa
| | - Riaz A Khan
- />College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, 32307 Tallahassee, FL
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Reddy MN, Rehana T, Ramakrishna S, Chowdhary KPR, Diwan PV. Beta-cyclodextrin complexes of celecoxib: molecular-modeling, characterization, and dissolution studies. AAPS PHARMSCI 2004; 6:E7. [PMID: 15198508 PMCID: PMC2750942 DOI: 10.1208/ps060107] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2003] [Accepted: 01/23/2004] [Indexed: 12/29/2022]
Abstract
Celecoxib, a specific inhibitor of cycloxygenase-2 (COX-2) is a poorly water-soluble nonsteroidal anti-inflammatory drug with relatively low bioavailability. The effect of beta-cyclodextrin on the aqueous solubility and dissolution rate of celecoxib was investigated. The possibility of molecular arrangement of inclusion complexes of celecoxib and beta-cyclodextrin were studied using molecular modeling and structural designing. The results offer a better correlation in terms of orientation of celecoxib inside the cyclodextrin cavity. Phase-solubility profile indicated that the solubility of celecoxib was significantly increased in the presence of beta-cyclodextrin and was classified as A(L)-type, indicating the 1:1 stoichiometric inclusion complexes. Solid complexes prepared by freeze drying, evaporation, and kneading methods were characterized using differential scanning calorimetry, powder x-ray diffractometry, and scanning electron microscopy. In vitro studies showed that the solubility and dissolution rate of celecoxib were significantly improved by complexation with beta-cyclodextrin with respect to the drug alone. In contrast, freeze-dried complexes showed higher dissolution rate than the other complexes.
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Affiliation(s)
- M Narender Reddy
- Pharmacology Division, Indian Institute of Chemical Technology, Hyderabad, India-500007
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Experimental design for the formulation and optimization of novel cross-linked oilispheres developed for in vitro site-specific release ofMentha piperita oil. AAPS PharmSciTech 2004. [DOI: 10.1007/bf02830586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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