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Takezaki H, Otsubo T, Echigo Y, Kamiya H, Okada Y. Porous and spherical ethyl cellulose fine particles produced by ternary system-based emulsion castings. POWDER TECHNOL 2022; 395:663-8. [DOI: 10.1016/j.powtec.2021.10.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Hazra M, Dasgupta Mandal D, Mandal T, Rao BP, Samaddar S. Optimization and characterization of hepatoprotective andrographolide microspheres in the necrotic rat model. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Abdalla KF, Osman MA, Nouh AT, El Maghraby GM. Microsponges for controlled release and enhanced oral bioavailability of carbamazepine. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Irshad S, Khan IU, Khalid SH, Asghar S, Irfan M, Khalid I, Sabir N, Ali A, Khan AN, Yousaf AM, Hussain T, Shahzad Y. Probing the effect of various lipids and polymer blends on clopidogrel encapsulated floating microcarriers. Daru 2019; 27:571-582. [PMID: 31228127 PMCID: PMC6895352 DOI: 10.1007/s40199-019-00285-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 06/14/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Clopidogrel (CLOP) is an antiplatelet drug with poor solubility in intestinal fluid, which limits its bioavailability after oral administration. OBJECTIVES Current study focuses on developing site-specific floating microcarriers of CLOP using solvent diffusion evaporation method (SDEM) for retaining the drug in the stomach, thus improving the solubility of drug for better absorption. METHODS SDEM was employed to formulate floating microcarriers using lipidic excipients, namely Gelucires (GL) to impart floating properties, in combination with ethyl cellulose as release retarding polymer. RESULTS Prepared particles were 169 ± 6 μm to 375 ± 13 μm in size, whilst encapsulation efficiency was ranged from 39.6 ± 0.60% to 96.50 ± 3.50%. Electron micrographs depicted discrete spherical microcarriers with porous structure, which amplified with increasing HLB value of GL and concentration of Eudragit E100. FTIR study confirmed absence of major drug polymer interactions while DSC and XRD studies revealed the presence of non-crystalline nature of drug in all formulations. Drug release at pH 1.2 enhanced more than 2-folds with increasing HLB value with 32% cumulative drug release for GL 43/01 and 69% for GL 50/13. More interestingly, adding various proportions of Eudragit E100 to GL 43/01 based formulations resulted in increased drug release as high as 71%. In all formulations, the drug release followed diffusion dependent process. CONCLUSION It is envisaged that this formulation strategy for CLOP is promising and could possibly be tested in future for its in vivo performance. Graphical abstract Lipid based floating microcarriers of clopidogrel.
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Affiliation(s)
- Saba Irshad
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Ikram Ullah Khan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan.
| | - Syed Haroon Khalid
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Sajid Asghar
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Muhammad Irfan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Ikrima Khalid
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Nadeem Sabir
- Department of Physics, Government College University Faisalabad, Faisalabad, Pakistan
| | - Adnan Ali
- Department of Physics, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ahmad Nawaz Khan
- Department of Materials Engineering, School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Abid Mehmood Yousaf
- Drug Delivery Research Group, Department of Pharmacy, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Pakistan
| | - Talib Hussain
- Drug Delivery Research Group, Department of Pharmacy, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Pakistan
| | - Yasser Shahzad
- Drug Delivery Research Group, Department of Pharmacy, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Pakistan.
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Adeleke OA. Premium ethylcellulose polymer based architectures at work in drug delivery. Int J Pharm X 2019; 1:100023. [PMID: 31517288 PMCID: PMC6733301 DOI: 10.1016/j.ijpx.2019.100023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 12/14/2022]
Abstract
Premium ethylcellulose polymers are hydrophobic cellulose ether based biomaterials widely employed as biocompatible templates for the design of novel drug delivery systems. They are classified as United States Food and Drug Administration Generally-Recognized-As-Safe chemical substances and have been extensively utilized within the biomedical and pharmaceutical industries for over half a century. They have so far demonstrated the potential to modulate and improve the physiological performance of bioactives leading to the desired enhanced prophylactic and therapeutic outcomes. This review therefore presents a scholarly survey of inter-disciplinary developments focused on the functionalities of ethylcellulose polymers as biomaterials useful for the design of smart delivery architectures for relevant pharmacotherapeutic biomedical applications. Emphasis was placed on evaluating scientific resources related to recent advancements and future directions associated with its applications as delivery systems for drugs and biologics within the past decade thus complementing other specialized reviews showcasing the theme.
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Affiliation(s)
- Oluwatoyin A Adeleke
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institute of Health, US Department of Health and Human Services, Bethesda, MD 20892, USA.,Division of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, Pretoria 0208, South Africa
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Ismail S, El-Mahdy M, Abd Ellah NH, Abdelmalek DA. Oil-entrapped ranitidine HCl beads heal peptic ulcers via local and systemic mechanisms. Drug Dev Ind Pharm 2018; 45:231-243. [PMID: 30260710 DOI: 10.1080/03639045.2018.1529785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
OBJECTIVE Oral gastroretentive system is one of the site-specific drug delivery system, which is designed to be retained in upper GIT for a prolonged time. Ranitidine hydrochloride (RHCl), which is used frequently in treatment of peptic ulcer, is a suitable candidate for gastroretentive delivery systems. Dependently, floating oil-entrapped alginate beads of RHCl were developed and evaluated as an approach to site-specific delivery avoiding colonic degradation and enhancing both bioavailability and the proposed local effect. METHODS Different formulations of floating beads were suggested and randomized using 24 full factorial design. Optimized formulation was subjected for in vivo studies to measure the oral bioavailability and the healing effect of induced peptic ulcers. RESULTS Beads size ranged from 1.32 to 2.3 mm. All beads revealed excellent floating capabilities. Optimum formulation (F12) has entrapment efficiency of 70%, drug loading of 7% and 71% RHCl released after 6 h. SEM of F12 shows a grossly spherical structure with presence of oil droplets distributed throughout structure. AUC obtained from F12 was nonsignificantly higher than that of a commercial tablet. Signs of ulcer healing appeared clearly with F12 through appearance of granulation tissue, collagen fibers and newly formed blood vessels. Healing rate and extent obtained with a commercial tablet were less than F12. Quantitative analysis confirmed histopathological findings. CONCLUSION Floating oil-entrapped beads are a promising approach for RHCl delivery to remain in stomach for a longer time ensuring site-specific delivery and consequently, enhancing local healing effect of peptic ulcers.
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Affiliation(s)
- Sayed Ismail
- a Department of Pharmaceutics, Faculty of Pharmacy , Assiut University , Assiut , Egypt
| | - Mona El-Mahdy
- a Department of Pharmaceutics, Faculty of Pharmacy , Assiut University , Assiut , Egypt
| | | | - Dina Adel Abdelmalek
- a Department of Pharmaceutics, Faculty of Pharmacy , Assiut University , Assiut , Egypt
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Arca HC, Mosquera-Giraldo LI, Bi V, Xu D, Taylor LS, Edgar KJ. Pharmaceutical Applications of Cellulose Ethers and Cellulose Ether Esters. Biomacromolecules 2018; 19:2351-2376. [PMID: 29869877 DOI: 10.1021/acs.biomac.8b00517] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Cellulose ethers have proven to be highly useful natural-based polymers, finding application in areas including food, personal care products, oil field chemicals, construction, paper, adhesives, and textiles. They have particular value in pharmaceutical applications due to characteristics including high glass transition temperatures, high chemical and photochemical stability, solubility, limited crystallinity, hydrogen bonding capability, and low toxicity. With regard to toxicity, cellulose ethers have essentially no ability to permeate through gastrointestinal enterocytes and many are already in formulations approved by the U.S. Food and Drug Administration. We review pharmaceutical applications of these valuable polymers from a structure-property-function perspective, discussing each important commercial cellulose ether class; carboxymethyl cellulose, methyl cellulose, hydroxypropylcellulose, hydroxypropyl methyl cellulose, and ethyl cellulose, and cellulose ether esters including hydroxypropyl methyl cellulose acetate succinate and carboxymethyl cellulose acetate butyrate. We also summarize their syntheses, basic material properties, and key pharmaceutical applications.
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Affiliation(s)
| | - Laura I Mosquera-Giraldo
- Department of Industrial and Physical Pharmacy , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Vivian Bi
- Ashland Specialty Ingredients , 500 Hercules Road , Wilmington , Delaware 19808 , United States
| | - Daiqiang Xu
- Ashland Specialty Ingredients , 500 Hercules Road , Wilmington , Delaware 19808 , United States
| | - Lynne S Taylor
- Department of Industrial and Physical Pharmacy , Purdue University , West Lafayette , Indiana 47907 , United States
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Khattab A, Zaki N. Optimization and Evaluation of Gastroretentive Ranitidine HCl Microspheres by Using Factorial Design with Improved Bioavailability and Mucosal Integrity in Ulcer Model. AAPS PharmSciTech 2017; 18:957-973. [PMID: 28271373 DOI: 10.1208/s12249-017-0744-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 02/13/2017] [Indexed: 11/30/2022] Open
Abstract
The purpose of our investigation was to develop and optimize the drug entrapment efficiency and bioadhesion properties of mucoadhesive chitosan microspheres containing ranitidine HCl prepared by an ionotropic gelation method as a gastroretentive delivery system; thus, we improved their protective and therapeutic gastric effects in an ulcer model. A 3 × 22 full factorial design was adopted to study the effect of three different factors, i.e., the type of polymer at three levels (chitosan, chitosan/hydroxypropylmethylcellulose, and chitosan/methylcellulose), the type of solvent at two levels (acetic acid and lactic acid), and the type of chitosan at two levels (low molecular weight (LMW) and high molecular weight (HMW)). The studied responses were particle size, swelling index, drug entrapment efficiency, bioadhesion (as determined by wash-off and rinsing tests), and T 80% of drug release. Studies of the in vivo mucoadhesion and in vivo protective and healing effects of the optimized formula against gastric ulcers were carried out using albino rats (with induced gastric ulceration) and were compared to the effects of free ranitidine powder. A pharmacokinetic study in rabbits showed a significant, 2.1-fold increase in theAUC0-24of the ranitidine microspheres compared to free ranitidine after oral administration. The optimized formula showed higher drug entrapment efficiency and mucoadhesion properties and had more protective and healing effects on induced gastric ulcers in rats than ranitidine powder. In conclusion, the prolonged gastrointestinal residence time and the stability of the mucoadhesive microspheres of ranitidine as well as the synergistic healing effect of chitosan could contribute to increasing the potential of its anti-gastric ulcer activity.
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Kola Srinivas NS, Verma R, Pai Kulyadi G, Kumar L. A quality by design approach on polymeric nanocarrier delivery of gefitinib: formulation, in vitro, and in vivo characterization. Int J Nanomedicine 2016; 12:15-28. [PMID: 28031710 PMCID: PMC5179202 DOI: 10.2147/ijn.s122729] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Gefitinib is an anticancer agent which acts by inhibiting epidermal growth factor receptor tyrosine kinase receptors. The aim of the present study was to prepare gefitinib nanosuspension. Gefitinib was encapsulated in Eudragit® RL100 and then dispersed in stabilizer solution, polyvinyl alcohol, and polyvinylpyrrolidone K30. Nanosuspension was prepared by using homogenization and ultrasonication techniques. The quality by design approach was also used in the study to understand the effect of critical material attributes (CMAs) and critical processing parameters (CPPs) on critical quality attributes and to improve the quality and safety of formulation. To study the effect of CMAs and CPPs, 23 full factorial design was applied. The particle size, polydispersity index, and zeta potential of the optimized solution were 248.20 nm, 0.391, and -5.62 mV, respectively. Drug content of the optimized nanoformulation was found to be 87.74%±1.19%. Atomic force microscopy studies of the optimized formulation confirmed that the prepared nanoparticles are smooth and spherical in nature. In vitro cytotoxicity studies of the nanosuspension on Vero cell line revealed that the formulation is nontoxic. The gefitinib nanosuspension released 60.03%±4.09% drug over a period of 84 h, whereas standard drug dispersion released only 10.39%±3.37% drug in the same duration. From the pharmacokinetic studies, half-life, Cmax, and Tmax of the drug of an optimized nanosuspension were found to be 8.65±1.99 h, 46,211.04±5,805.97 ng/mL, and 6.67±1.77 h, respectively. A 1.812-fold increase in relative bioavailability of nanosuspension was found, which confirmed that the present formulation is suitable to enhance the oral bioavailability of gefitinib.
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Affiliation(s)
| | - Ruchi Verma
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
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Ammar HO, Ghorab MM, Mahmoud AA, Noshi SH. Formulation of risperidone in floating microparticles to alleviate its extrapyramidal side effects. Future Journal of Pharmaceutical Sciences 2016. [DOI: 10.1016/j.fjps.2016.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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He M, Wang H, Dou W, Chou G, Wei X, Wang Z. Preparation and drug release properties of norisoboldine-loaded chitosan microspheres. Int J Biol Macromol 2016; 91:1101-9. [DOI: 10.1016/j.ijbiomac.2016.06.076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 06/15/2016] [Accepted: 06/23/2016] [Indexed: 12/19/2022]
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Lohani A, Singh G, Bhattacharya SS, Rama Hegde R, Verma A. Tailored-interpenetrating polymer network beads of κ-carrageenan and sodium carboxymethyl cellulose for controlled drug delivery. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2015.11.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ammar HO, Ghorab M, Kamel R, Salama AH. Design and optimization of gastro-retentive microballoons for enhanced bioavailability of cinnarizine. Drug Deliv Transl Res 2016; 6:210-24. [DOI: 10.1007/s13346-016-0280-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ammar HO, Ghorab M, Kamel R, Salama AH. A trial for the design and optimization of pH-sensitive microparticles for intestinal delivery of cinnarizine. Drug Deliv Transl Res 2016; 6:195-209. [DOI: 10.1007/s13346-015-0277-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
CONTEXT Conventional sustained dosage form of ranitidine hydrochloride (HCl) does not prevent frequent administration due to its degradation in colonic media and limited absorption in the upper part of GIT. OBJECTIVES Ranitidine HCl floating tablet was formulated with sublimation method to overcome the stated problem. METHODS Compatibility study for screening potential excipients was carried out using Fourier transform infrared spectroscopy (FT-IR) and differential scanning chromatography (DSC). Selected excipients were further evaluated for optimizing the formulation. Preliminary screening of binder, polymer and sublimating material was based on hardness and drug release, drug release with release kinetics and floating lag time with total floatation time, respectively. Selected excipients were subjected to 3(2) factorial design with polymer and sublimating material as independent factors. Matrix tablets were obtained by using 16/32" flat-faced beveled edges punches followed by sublimation. RESULTS FT-IR and DSC indicated no significant incompatibility with selected excipients. Klucel-LF, POLYOX WSR N 60 K and l-menthol were selected as binder, polymer and sublimating material, respectively, for factorial design batches after preliminary screening. From the factorial design batches, optimum concentration to release the drug within 12 h was found to be 420 mg of POLYOX and 40 mg of l-menthol. Stability studies indicated the formulation as stable. CONCLUSION Ranitidine HCl matrix floating tablets were formulated to release 90% of drug in stomach within 12 h. Hence, release of the drug could be sustained within narrow absorption site. Moreover, the dosage form was found to be floating within a fraction of second independent of the pH of media ensuring a robust formulation.
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Affiliation(s)
- Rajesh S Kesarla
- a Department of Pharmaceutics , Parul Institute of Pharmacy , Vadodara , Gujarat , India and
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Mishra B, Singh AK, Yadav SK. Study of comparative aspects of gastroretentive delivery of cefixime trihydrate from microspheres and microsphere based tablets. Journal of Pharmaceutical Investigation 2015. [DOI: 10.1007/s40005-015-0202-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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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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Jiang Y, Wang F, Xu H, Liu H, Meng Q, Liu W. Development of andrographolide loaded PLGA microspheres: Optimization, characterization and in vitro–in vivo correlation. Int J Pharm 2014; 475:475-84. [DOI: 10.1016/j.ijpharm.2014.09.016] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 08/23/2014] [Accepted: 09/10/2014] [Indexed: 12/23/2022]
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Xu H, Shi M, Liu Y, Jiang J, Ma T. A novel in situ gel formulation of ranitidine for oral sustained delivery. Biomol Ther (Seoul) 2014; 22:161-5. [PMID: 24753823 PMCID: PMC3975478 DOI: 10.4062/biomolther.2013.109] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 01/26/2014] [Accepted: 01/27/2014] [Indexed: 12/13/2022] Open
Abstract
The main purpose of this study was to develop a novel, in situ gel system for sustained delivery of ranitidine hydrochloride. Ranitidine in situ gels at 0.2%, 0.5%, and 1.0% gellan gum concentration (w/v) were prepared, respectively, and characterized in terms of preparation, viscosity and in vitro release. The viscosity of the gellan gum formulations in solution increased with increasing concentrations of gellan gum. In vitro study showed that the release of ranitidine from these gels was characterized by an initial phase of high release (burst effect) and translated to the second phase of moderate release. Single photon emission computing tomography technique was used to evaluate the stomach residence time of gel containing 99mTc tracer. The animal experiment suggested in situ gel had feasibility of forming gels in stomach and sustained the ranitidine release from the gels over the period of at least 8 h. In conclusion, the in situ gel system is a promising approach for the oral delivery of ranitidine for the therapeutic effects improvement.
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Affiliation(s)
- Haoping Xu
- Department of Radiochemotherapy, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Min Shi
- Department of Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ying Liu
- Department of Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jinling Jiang
- Department of Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Tao Ma
- Department of Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Taranalli SS, Dandagi PM, Mastiholimath VS. Development of hollow/porous floating beads of metoprolol for pulsatile drug delivery. Eur J Drug Metab Pharmacokinet 2014; 40:225-33. [DOI: 10.1007/s13318-014-0194-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 03/25/2014] [Indexed: 02/03/2023]
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Rao BP, Baby B, Mathews R, Rajarajan S, Haritha P, Ramesh K, Gupta NVK. Design, statistical optimisation, characterisation and pharmacodynamic studies on Pioglitazone hydrochloride floating microparticles. J Microencapsul 2014; 31:406-14. [PMID: 24697182 DOI: 10.3109/02652048.2013.863399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The purpose of this study was to develop floating microparticles containing Pioglitazone HCl, for controlled release and perform pharmacodynamic studies. The FTIR and DSC studies revealed that there is no interaction between drug and excipients used. The 2(2) factorial design was employed to evaluate the effect of drug: polymer (total) and Eudragit RS 100: Eudragit RL 100. The floating microparticles were prepared by solvent evaporation technique. The predicted and actual values of drug release at 1 h, 8 h and drug entrapment were 38.307%, 77.76%, 84.25% and 38.712%, 76.237% and 84.62%, respectively. XRD and SEM studies showed reduced crystallinity of drug and spherical microparticles. Buoyancy studies revealed good floating of particles for 12 h. Pharmacodynamic studies showed significant reduction in blood glucose levels in male New Zealand rabbits. The results demonstrate the feasibility of the factorial design in successfully developing floating microparticles of Pioglitazone HCl for controlled release.
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Banerjee S, Singh S, Bhattacharya SS, Chattopadhyay P. Trivalent ion cross-linked pH sensitive alginate-methyl cellulose blend hydrogel beads from aqueous template. Int J Biol Macromol 2013; 57:297-307. [DOI: 10.1016/j.ijbiomac.2013.03.039] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 02/22/2013] [Accepted: 03/17/2013] [Indexed: 11/30/2022]
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Bhattacharya SS, Ghosh AK, Banerjee S, Chattopadhyay P, Ghosh A. Al3+ ion cross-linked interpenetrating polymeric network microbeads from tailored natural polysaccharides. Int J Biol Macromol 2012; 51:1173-84. [DOI: 10.1016/j.ijbiomac.2012.08.029] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 08/12/2012] [Accepted: 08/23/2012] [Indexed: 11/20/2022]
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Goswami N, Joshi G, Sawant K. Floating microspheres of valacyclovir HCl: Formulation, optimization, characterization, in vitro and in vivo floatability studies. J Pharm Bioallied Sci 2012; 4:S8-9. [PMID: 23066217 PMCID: PMC3467807 DOI: 10.4103/0975-7406.94118] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Floating microspheres are multiple unit Gastroretentive drug delivery systems. Valacyclovir hydrochloride (VCH) is L-valyl ester prodrug of acyclovir. VCH degrades in intestinal fluid. The objective was to develop floating microspheres of VCH to localise the drug at upper part of GIT, for improved absorption. Floating microspheres were prepared by W/O emulsification solvent evaporation method using Ethylcellulose (EC) as polymer. Particle size and % EE were 550.021±0.241 μm, 79.88±2.236% respectively. in vitro and in vivo floatability studies confirmed floating behaviour of microspheres. VCH loaded floating microspheres can be a suitable alternative to the conventional formulation, by localizing the drug at upper GIT.
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Affiliation(s)
- Nilamgiri Goswami
- TIFAC Centre of Relevance and Excellence, M S University of Baroda, Vadodara, Gujarat
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Pandit V, Pai RS, Yadav V, Devi K, Surekha BB, Inamdar MN, Suresh S. Pharmacokinetic and pharmacodynamic evaluation of floating microspheres of metformin hydrochloride. Drug Dev Ind Pharm 2012; 39:117-27. [DOI: 10.3109/03639045.2012.662503] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kim KS, Park SJ. Influence of glyceryl palmitostearate on release behaviors of hydroxypropyl cellulose microcapsules containing indomethacin by W/O emulsion. Macromol Res 2011. [DOI: 10.1007/s13233-011-1105-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Saravanan M, Anupama B. Development and evaluation of ethylcellulose floating microspheres loaded with ranitidine hydrochloride by novel solvent evaporation-matrix erosion method. Carbohydr Polym 2011; 85:592-8. [DOI: 10.1016/j.carbpol.2011.03.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Kim KS, Park SJ. Characterization and release behaviors of porous PCL/Eudragit RS microcapsules containing tulobuterol. Colloids Surf B Biointerfaces 2009; 76:404-9. [PMID: 20034769 DOI: 10.1016/j.colsurfb.2009.11.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2009] [Revised: 11/18/2009] [Accepted: 11/20/2009] [Indexed: 11/16/2022]
Abstract
In this work, porous poly(epsilon-caprolactone) (PCL)/Eudragit RS 100 (ERS-100) microcapsules containing tulobuterol base as a model drug were prepared by a solvent evaporation method and the effect of the quaternary ammonium groups of ERS-100 on the release behaviors of the microcapsules was investigated. The microcapsules prepared with PCL alone showed a stable and smooth surface, whereas porous microcapsules were formed with the addition of ERS-100. Drug loading and encapsulation efficiency of the microcapsules were slightly decreased with an increase of ERS-100 content, resulting from an increase in the porosity of the microcapsules. In an acidic release medium, PCL microcapsules showed slow drug release, whereas PCL/ERS-100 microcapsules showed a faster release rate with an increasing ERS-100 content. These behaviors are likely due to an increase in the diffusion rate of the drugs stemming from an increased hydration of the microcapsules, which results from the interaction between the carboxyl group of the release medium and the quaternary ammonium group of ERS-100.
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Affiliation(s)
- Ki-Seok Kim
- Department of Chemistry, Inha University, Nam-gu, 253, Incheon 402-751, South Korea
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