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Kolev I, Ivanova N, Topouzova-Hristova T, Dimova T, Koseva P, Vasileva I, Ivanova S, Apostolov A, Alexieva G, Tzonev A, Strashilov V. Ammonio Methacrylate Copolymer (Type B)-Diltiazem Interactions in Solid Dispersions and Microsponge Drug-Delivery Systems. Polymers (Basel) 2022; 14:polym14102125. [PMID: 35632008 PMCID: PMC9144411 DOI: 10.3390/polym14102125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/23/2022] [Accepted: 05/20/2022] [Indexed: 12/10/2022] Open
Abstract
This paper presents a complex analytical study on the distribution, solubility, amorphization, and compatibility of diltiazem within the composition of Eudragit RS 100-based particles of microspongeous type. For this purpose, a methodology combining attenuated total reflectance Fourier transform infrared (ATR-FTIR) absorption spectroscopy, differential scanning calorimetry (DSC), scanning electron microscopy with energy-dispersive X-ray microanalysis (SEM-EDX), and in vitro dissolution study is proposed. The correct interpretation of the FTIR and drug-dissolution results was guaranteed by the implementation of two contrasting reference models: physical drug–polymer mixtures and casting-obtained, molecularly dispersed drug–polymer composites (solid dispersions). The spectral behavior of the drug–polymer composites in the carbonyl frequency (νCO) region was used as a quality marker for the degree of their interaction/mutual solubility. A spectral-pattern similarity between the microsponge particles and the solid dispersions indicated the molecular-type dispersion of the former. The comparative drug-desorption study and the qualitative observations over the DSC and SEM-EDX results confirmed the successful synthesis of a homogeneous coamorphous microsponge-type formulation with excellent drug-loading capacity and “controlled” dissolution profile. Among them, the drug-delivery particles with 25% diltiazem content (M-25) were recognized as the most promising, with the highest population of drug molecules in the polymer bulk and the most suitable desorption profile. Furthermore, an economical and effective analytical algorithm was developed for the comprehensive physicochemical characterization of complex delivery systems of this kind.
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Affiliation(s)
- Iliyan Kolev
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University “Prof. Dr. Paraskev Stoyanov”–Varna, 84 “Tzar Osvoboditel” Blvd., 9000 Varna, Bulgaria; (T.D.); (P.K.); (I.V.); (S.I.)
- Correspondence: (I.K.); (N.I.)
| | - Nadezhda Ivanova
- Department of Pharmaceutical Technologies, Faculty of Pharmacy, Medical University “Prof. Dr. Paraskev Stoyanov”–Varna, 84 “Tzar Osvoboditel” Blvd., 9000 Varna, Bulgaria
- Correspondence: (I.K.); (N.I.)
| | - Tanya Topouzova-Hristova
- Department of Cytology, Histology and Embryology, Faculty of Biology, Sofia University “St. Kl. Ohridski”, 8 Dragan Tzankov Str., 1164 Sofia, Bulgaria;
| | - Tanya Dimova
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University “Prof. Dr. Paraskev Stoyanov”–Varna, 84 “Tzar Osvoboditel” Blvd., 9000 Varna, Bulgaria; (T.D.); (P.K.); (I.V.); (S.I.)
| | - Pavlina Koseva
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University “Prof. Dr. Paraskev Stoyanov”–Varna, 84 “Tzar Osvoboditel” Blvd., 9000 Varna, Bulgaria; (T.D.); (P.K.); (I.V.); (S.I.)
| | - Ivalina Vasileva
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University “Prof. Dr. Paraskev Stoyanov”–Varna, 84 “Tzar Osvoboditel” Blvd., 9000 Varna, Bulgaria; (T.D.); (P.K.); (I.V.); (S.I.)
| | - Sonya Ivanova
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University “Prof. Dr. Paraskev Stoyanov”–Varna, 84 “Tzar Osvoboditel” Blvd., 9000 Varna, Bulgaria; (T.D.); (P.K.); (I.V.); (S.I.)
| | - Anton Apostolov
- Laboratory on Structure and Properties of Polymers, Faculty of Chemistry and Pharmacy, Sofia University “St. Kl. Ohridski”, 1 J. Bourchier Blvd., 1164 Sofia, Bulgaria;
| | - Gergana Alexieva
- Department of General Physics, Faculty of Physics, Sofia University “St. Kl. Ohridski”, 5 J. Bourchier Blvd., 1164 Sofia, Bulgaria;
| | - Atanas Tzonev
- Department of Condensed Matter Physics and Microelectronics, Faculty of Physics, Sofia University “St. Kl. Ohridski”, 5 J. Bourchier Blvd., 1164 Sofia, Bulgaria; (A.T.); (V.S.)
| | - Vesselin Strashilov
- Department of Condensed Matter Physics and Microelectronics, Faculty of Physics, Sofia University “St. Kl. Ohridski”, 5 J. Bourchier Blvd., 1164 Sofia, Bulgaria; (A.T.); (V.S.)
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Silva IA, Lima AL, Gratieri T, Gelfuso GM, Sa-Barreto LL, Cunha-Filho M. Compatibility and stability studies involving polymers used in fused deposition modeling 3D printing of medicines. J Pharm Anal 2021; 12:424-435. [PMID: 35811629 PMCID: PMC9257448 DOI: 10.1016/j.jpha.2021.09.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 09/03/2021] [Accepted: 09/17/2021] [Indexed: 02/07/2023] Open
Abstract
One of the challenges in developing three-dimensional printed medicines is related to their stability due to the manufacturing conditions involving high temperatures. This work proposed a new protocol for preformulation studies simulating thermal processing and aging of the printed medicines, tested regarding their morphology and thermal, crystallographic, and spectroscopic profiles. Generally, despite the strong drug-polymer interactions observed, the chemical stability of the model drugs was preserved under such conditions. In fact, in the metoprolol and Soluplus® composition, the drug's solubilization in the polymer produced a delay in the drug decomposition, suggesting a protective effect of the matrix. Paracetamol and polyvinyl alcohol mixture, in turn, showed unmistakable signs of thermal instability and chemical decomposition, in addition to physical changes. In the presented context, establishing protocols that simulate processing and storage conditions may be decisive for obtaining stable pharmaceutical dosage forms using three-dimensional printing technology. Preformulation protocol was proposed to guide the development of 3D-printed medicines. Drug models were able to support thermal processing equivalent to FDM/3D printing. Soluplus showed a protective effect for metoprolol after double heating and aging. Paracetamol and PVA mixture demonstrated incompatibility under heating processing.
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Nieto K, Mallery SR, Schwendeman SP. Microencapsulation of amorphous solid dispersions of fenretinide enhances drug solubility and release from PLGA in vitro and in vivo. Int J Pharm 2020; 586:119475. [PMID: 32525080 PMCID: PMC7522920 DOI: 10.1016/j.ijpharm.2020.119475] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/22/2020] [Accepted: 05/24/2020] [Indexed: 01/12/2023]
Abstract
The purpose of this study was to develop solid dispersions of fenretinide(4HPR), incorporate them into poly(lactic-co-glycolic)(PLGA) millicylindrical implants, and evaluate the resulting implants in vitro and in vivo for future applications in oral cancer chemoprevention. Due to the extreme hydrophobicity of 4HPR, 4HPR-polyvinylpyrrolidone (PVP) amorphous solid dispersions(ASDs) were prepared for solubility enhancement. The optimal PVP-4HPR ratio of 9/1(w/w) provided a 50-fold solubility enhancement in aqueous media, which was sustained over 1 week. PVP-4HPR ASD particles were loaded into PLGA millicylinders and drug release was evaluated in vitro in PBST and in vivo by recovery from subcutaneous injection in rats. While initial formulations of PLGA PVP-4HPR millicylinders only released 10% 4HPR in vitro after 28 days, addition of the plasticizer triethyl-o-acetyl-citrate(TEAC) into PVP-4HPR ASDs resulted in a 5.6-fold total increase in drug release. Remarkably, the TEAC-PVP-4HPR PLGA implants demonstrated slow, continuous, and nearly complete release over 1 month in vivo compared to a 25% release for our previously reported formulation incorporating solubilizers and pore-forming agents. Hence, a combination of PLGA plasticizer and ASD formation provides an avenue for long-term controlled release in vivo for the exceptionally difficult drug to formulate, 4HPR, and a suitable formulation for future evaluation in rodent models of oral cancer.
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Affiliation(s)
- Kari Nieto
- Department of Pharmaceutical Sciences and The Biointerfaces Institute, University of Michigan, Ann Arbor, MI, United States
| | - Susan R Mallery
- Division of Oral Maxillofacial Pathology & Radiology, College of Dentistry, Ohio State University, Columbus, OH, United States
| | - Steven P Schwendeman
- Department of Pharmaceutical Sciences and The Biointerfaces Institute, University of Michigan, Ann Arbor, MI, United States; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States.
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Hameed HA, Khan S, Shahid M, Ullah R, Bari A, Ali SS, Hussain Z, Sohail M, Khan SU, Htar TT. Engineering of Naproxen Loaded Polymer Hybrid Enteric Microspheres for Modified Release Tablets: Development, Characterization, in silico Modelling and in vivo Evaluation. Drug Des Devel Ther 2020; 14:27-41. [PMID: 32021089 PMCID: PMC6954845 DOI: 10.2147/dddt.s232111] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 12/13/2019] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Naproxen (NP) is a non-steroidal anti-inflammatory drug with poor aqueous solubility and low oral bioavailability, which may lead to therapeutic failure. NP causes crucial GIT irritation, bleeding, and peptic and duodenal ulcers. PURPOSE OF THE STUDY This study aimed to engineer and characterize polymer hybrid enteric microspheres using an integrated (experimental and molecular modelling) approach with further development to solid dosage form with modified drug release kinetics and improved bioavailability. MATERIALS AND METHODS NP loaded polymer hybrid enteric microspheres (PHE-Ms) were fabricated by using a modified solvent evaporation technique coupled with molecular modelling (MM) approach. The PHE-Ms were characterized by particle size, distribution, morphology, crystallinity, EE, drug-polymer compatibility, and DSC. The optimized NP loaded PHE-Ms were further subjected to downstream procedures including tablet dosage form development, stability studies and comparative in vitro-in vivo evaluation. RESULTS The hydrophobic polymer EUD-L100 and hydrophilic polymer HPMC-E5 delayed and modified drug release at intestinal pH while imparting retardation of NP release at gastric pH to diminish the gastric side effects. The crystallinity of the NP loaded PHE-Ms was established through DSC and P (XRD). The particle size for the developed formulations of PEH-Ms (M1-M5) was in the range from 29.06 ±7.3-74.31 ± 17.7 μm with Span index values of 0.491-0.69, respectively. The produced NP hybrid microspheres demonstrated retarded drug release at pH 1.2 and improved dissolution at pH 6.8. The in vitro drug release patterns were fitted to various release kinetic models and the best-followed model was the Higuchi model with a release exponent "n" value > 0.5. Stability studies at different storage conditions confirmed stability of the NP loaded PHE-Ms based tablets (P<0.05). The molecular modelling (MM) study resulted in adequate binding energy of co-polymer complex SLS-Eudragit-HPMC-Naproxen (-3.9 kcal/mol). In contrast to the NP (unprocessed) and marketed formulations, a significant increase in the Cmax of PHE-MT1 (44.41±4.43) was observed. CONCLUSION The current study concludes that developing NP loaded PHE-Ms based tablets could effectively reduce GIT consequences with restored therapeutic effects. The modified release pattern could improve the dissolution rate and enhancement of oral bioavailability. The MM study strengthens the polymer-drug relationship in microspheres.
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Affiliation(s)
- Hajra Afeera Hameed
- Department of Pharmacy, University of Malakand, Chakdara, Khyber Pakhtunkhwa18800, Pakistan
| | - Shahzeb Khan
- Department of Pharmacy, University of Malakand, Chakdara, Khyber Pakhtunkhwa18800, Pakistan
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Durban4000, South Africa
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Muhammad Shahid
- Department of Pharmacy, Sarhad University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Riaz Ullah
- Medicinal, Aromatic & Poisonous Plants Research Center (MAPPRC), College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
| | - Ahmed Bari
- Central Laboratory, College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
| | - Syed Saeed Ali
- Central Laboratory, College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
| | - Zahid Hussain
- Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, University of Sharjah, Sharjah27272, United Arab Emirates
| | - Muhammad Sohail
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad22060, Pakistan
| | - Shafi Ullah Khan
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Subang Jaya47500, Malaysia
| | - Thet Thet Htar
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Subang Jaya47500, Malaysia
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Jiang J, Zhang Y, Indra AK, Ganguli-Indra G, Le MN, Wang H, Hollins RR, Reilly DA, Carlson MA, Gallo RL, Gombart AF, Xie J. 1α,25-dihydroxyvitamin D 3-eluting nanofibrous dressings induce endogenous antimicrobial peptide expression. Nanomedicine (Lond) 2018; 13:1417-1432. [PMID: 29972648 PMCID: PMC6219435 DOI: 10.2217/nnm-2018-0011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 03/16/2018] [Indexed: 01/27/2023] Open
Abstract
AIM The aim of this study was to develop a nanofiber-based dressing capable of local sustained delivery of 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3) and augmenting human CAMP induction. MATERIALS & METHODS Nanofibrous wound dressings containing 1,25(OH)2D3 were successfully prepared by electrospinning, which were examined in vitro, in vivo and ex vivo. RESULTS 1,25(OH)2D3 was successfully loaded into nanofibers with encapsulation efficiency larger than 90%. 1,25(OH)2D3 showed a sustained release from nanofibers over 4 weeks. Treatment of U937 and HaCaT cells with 1,25(OH)2D3-loaded poly(ϵ-caprolactone) nanofibers significantly induced hCAP18/LL37 expression in monocytes and keratinocytes, skin wounds of humanized transgenic mice and artificial wounds of human skin explants. CONCLUSION 1,25(OH)2D3 containing nanofibrous dressings could enhance innate immunity by inducing antimicrobial peptide production.
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Affiliation(s)
- Jiang Jiang
- Department of Surgery, Transplant & Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Yang Zhang
- Department of Biochemistry & Biophysics, Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
- Nutrition Graduate Program, School of Biological & Population Health Sciences, College of Public Health & Human Sciences, Oregon State University, Corvallis, OR 97331, USA
| | - Arup K Indra
- Department of Biochemistry & Biophysics, Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA
- Department of Dermatology, Oregon Health & Science University (OHSU), Portland, OR 97239, USA
- Knight Cancer Institute, OHSU, Portland, OR 97239, USA
| | - Gitali Ganguli-Indra
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA
- Knight Cancer Institute, OHSU, Portland, OR 97239, USA
| | - Mai N Le
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA
| | - Hongjun Wang
- Department of Surgery, Transplant & Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Ronald R Hollins
- Department of Surgery – Plastic & Reconstructive Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Debra A Reilly
- Department of Surgery – Plastic & Reconstructive Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Mark A Carlson
- Department of Surgery – General Surgery & Genetics, Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Surgery, VA Nebraska – Western Iowa Health Care System, Omaha, NE 68105, USA
| | - Richard L Gallo
- Department of Dermatology, University of California, San Diego, CA 92093, USA
| | - Adrian F Gombart
- Department of Biochemistry & Biophysics, Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
- Nutrition Graduate Program, School of Biological & Population Health Sciences, College of Public Health & Human Sciences, Oregon State University, Corvallis, OR 97331, USA
| | - Jingwei Xie
- Department of Surgery, Transplant & Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, USA
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Affiliation(s)
- Garima Agrawal
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Paper Mill Road, Saharanpur 247 001, Uttar Pradesh, India
| | - Sangram K. Samal
- Materials Research Centre, Indian Institute of Science, Bangalore 560 012, India
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Kim H, Kim S, Sah H. Solvent hydrolysis rate determines critical quality attributes of PLGA microspheres prepared using non-volatile green solvent. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 29:35-56. [DOI: 10.1080/09205063.2017.1398993] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- H. Kim
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
| | - S. Kim
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
| | - H. Sah
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
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Tawfeek HM, Abdellatif AAH, Dennison TJ, Mohammed AR, Sadiq Y, Saleem IY. Colonic delivery of indometacin loaded PGA-co-PDL microparticles coated with Eudragit L100-55 from fast disintegrating tablets. Int J Pharm 2017; 531:80-89. [PMID: 28818458 DOI: 10.1016/j.ijpharm.2017.08.069] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/02/2017] [Accepted: 08/08/2017] [Indexed: 01/23/2023]
Abstract
The aim of this work was to investigate the efficient targeting and delivery of indometacin (IND), as a model anti-inflammatory drug to the colon for treatment of inflammatory bowel disease. We prepared fast disintegrating tablets (FDT) containing IND encapsulated within poly(glycerol-adipate-co-ɷ-pentadecalactone), PGA-co-PDL, microparticles and coated with Eudragit L100-55 at different ratios (1:1.5, 1:1, 1:0.5). Microparticles encapsulated with IND were prepared using an o/w single emulsion solvent evaporation technique and coated with Eudragit L-100-55 via spray drying. The produced coated microparticles (PGA-co-PDL-IND/Eudragit) were formulated into optimised FTD using a single station press. The loading, in vitro release, permeability and transport of IND from PGA-co-PDL-IND/Eudragit microparticles was studied in Caco-2 cell lines. IND was efficiently encapsulated (570.15±4.2μg/mg) within the PGA-co-PDL microparticles. In vitro release of PGA-co-PDL-IND/Eudragit microparticles (1:1.5) showed significantly (p<0.05, ANOVA/Tukey) lower release of IND 13.70±1.6 and 56.46±3.8% compared with 1:1 (89.61±2.5, 80.13±2.6%) and 1:0.5 (39.46±0.9 & 43.38±3.12) after 3 and 43h at pH 5.5 and 6.8, respectively. The permeability and transport studies indicated IND released from PGA-co-PDL-IND/Eudragit microparticles had a lower permeability coefficient of 13.95±0.68×10-6cm/s compared to free IND 23.06±3.56×10-6cm/s. These results indicate the possibility of targeting anti-inflammatory drugs to the colon using FDTs containing microparticles coated with Eudragit.
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Affiliation(s)
- Hesham M Tawfeek
- Department of Industrial Pharmacy, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
| | - Ahmed A H Abdellatif
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt; Department of Pharmaceutics, Faculty of Pharmacy, Qassim University, Buraydah, Saudi Arabia
| | | | | | - Younis Sadiq
- School of Pharmacy and Biomolecular Science, Liverpool John Moores University, Liverpool, UK
| | - Imran Y Saleem
- School of Pharmacy and Biomolecular Science, Liverpool John Moores University, Liverpool, UK.
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Kim Y, Sah H. How to circumvent untoward drug crystallization during emulsion-templated microencapsulation process. J Appl Polym Sci 2016. [DOI: 10.1002/app.43768] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuyoung Kim
- Department of Pharmaceutical Sciences; College of Pharmacy; Ewha Womans University; 52 Ewhayeodae-Gil, Sedaemun-Gu Seoul 120-750 Republic of Korea
| | - Hongkee Sah
- Department of Pharmaceutical Sciences; College of Pharmacy; Ewha Womans University; 52 Ewhayeodae-Gil, Sedaemun-Gu Seoul 120-750 Republic of Korea
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Ren F, Su J, Xiong H, Tian Y, Ren G, Jing Q. Characterization of ibuprofen microparticle and improvement of the dissolution. Pharm Dev Technol 2016; 22:63-68. [PMID: 27055726 DOI: 10.3109/10837450.2016.1163386] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The objective of this study was to prepare ibuprofen (IBP) microparticles by pH-change method and enhance the dissolution rate in vitro. Tween80 and Cremophor RH40 were selected as stabilizers to change the microparticles morphology. The microparticles were evaluated by dissolution profiles and characterized by differential scanning calorimetry (DSC), powder X-ray diffraction (XRD), laser particle size analyzer, scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). IBP microparticle prepared with surfactants showed a significant increase in dissolution rate (more than three times within 10 min) and an obvious decrease in mean particle size. The morphology of microparticles was obviously changed. XRD and DSC results revealed that the crystalline state of the untreated IBP and the prepared IBP microparticles were similar. The crystallinity of microparticles produced might be lightly reduced by adding surfactants in preparation process. All results showed that it was useful to prepare high dispersion microparticle by adding surfactants in the preparation process for improving the dissolution.
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Affiliation(s)
- Fuzheng Ren
- a Laboratory of Pharmaceutical Crystal Engineering and Technology, Department of Pharmaceutical Engineering, School of Pharmacy , East China University of Science and Technology , Shanghai , China
| | - Jianping Su
- a Laboratory of Pharmaceutical Crystal Engineering and Technology, Department of Pharmaceutical Engineering, School of Pharmacy , East China University of Science and Technology , Shanghai , China
| | - Hui Xiong
- a Laboratory of Pharmaceutical Crystal Engineering and Technology, Department of Pharmaceutical Engineering, School of Pharmacy , East China University of Science and Technology , Shanghai , China
| | - Ying Tian
- a Laboratory of Pharmaceutical Crystal Engineering and Technology, Department of Pharmaceutical Engineering, School of Pharmacy , East China University of Science and Technology , Shanghai , China
| | - Guobin Ren
- a Laboratory of Pharmaceutical Crystal Engineering and Technology, Department of Pharmaceutical Engineering, School of Pharmacy , East China University of Science and Technology , Shanghai , China
| | - Qiufang Jing
- a Laboratory of Pharmaceutical Crystal Engineering and Technology, Department of Pharmaceutical Engineering, School of Pharmacy , East China University of Science and Technology , Shanghai , China
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Dalmoro A, Sitenkov AY, Lamberti G, Barba AA, Moustafine RI. Ultrasonic atomization and polyelectrolyte complexation to produce gastroresistant shell-core microparticles. J Appl Polym Sci 2015. [DOI: 10.1002/app.42976] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Annalisa Dalmoro
- Department of Pharmacy; University of Salerno; via Giovanni Paolo II, 132 Fisciano (SA) 84084 Italy
- Department of Industrial Engineering; via Giovanni Paolo II, 132 Fisciano (SA) 84084 Italy
| | - Alexander Y. Sitenkov
- Department of Pharmaceutical Analytical and Toxicological Chemistry; Kazan State Medical University; Butlerov Street 49 420012 Kazan Russian Federation
| | - Gaetano Lamberti
- Department of Industrial Engineering; via Giovanni Paolo II, 132 Fisciano (SA) 84084 Italy
| | - Anna Angela Barba
- Department of Pharmacy; University of Salerno; via Giovanni Paolo II, 132 Fisciano (SA) 84084 Italy
| | - Rouslan I. Moustafine
- Department of Pharmaceutical Analytical and Toxicological Chemistry; Kazan State Medical University; Butlerov Street 49 420012 Kazan Russian Federation
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Gañán-Calvo A, Castro-Hernández E, Flores-Mosquera M, Martín-Banderas L. Massive, Generic, and Controlled Microencapsulation by Flow Focusing: Some Physicochemical Aspects and New Applications. J Flow Chem 2015. [DOI: 10.1556/jfc-d-14-00022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Liu W, Selomulya C, Chen XD. Design of polymeric microparticles for pH-responsive and time-sustained drug release. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.10.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Jia Z, Choi DS, Chokshi H. Determination of Drug-Polymer Binding Constants by Affinity Capillary Electrophoresis for Aryl Propionic Acid Derivatives and Related Compounds. J Pharm Sci 2013; 102:960-6. [DOI: 10.1002/jps.23424] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 10/08/2012] [Accepted: 11/28/2012] [Indexed: 11/06/2022]
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Parodi B, Russo E, Caviglioli G, Baldassari S, Gaglianone N, Schito AM, Cafaggi S. A chitosan lactate/poloxamer 407-based matrix containing Eudragit RS microparticles for vaginal delivery of econazole: design and in vitro evaluation. Drug Dev Ind Pharm 2012; 39:1911-20. [PMID: 22681543 DOI: 10.3109/03639045.2012.694589] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A matrix based on chitosan lactate and poloxamer 407 was evaluated as a delivery system for the vaginal administration of the antifungal drug econazole. The matrix was investigated both containing the pure drug and after introducing microparticles of Eudragit RS 100 containing econazole. Eudragit RS 100 microparticles were prepared using an emulsion-extraction method and dispersed in a solution containing chitosan lactate (2% w/w) and poloxamer 407 (1.7% w/w). The microparticles, obtained with a yield of 64% w/w and an encapsulation efficiency of 42% w/w, had a diameter of less than 2 μm and a drug loading of 13% w/w. The compressed matrices, characterized by DSC, swelling, erosion, release and mucoadhesion studies, had behaviours dependent on the relative amounts of the contained microparticles. The matrix without microparticles (MECN) showed zero-order release kinetics, with a maximum drug-release of 60% w/w, while those containing 50 or 75% w/w microparticles showed a diffusion controlled release up to 8 and 16 h, respectively, and a linear trend after those time intervals, caused by the erosion process, which allowed reaching a drug-release of approximately 100% w/w at 22 h. In in vitro experiments, the matrices were mucoadhesive and active in inhibiting the growth of Candida albicans 796.
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Affiliation(s)
- Brunella Parodi
- Dipartimento di Chimica e Tecnologie Farmaceutiche ed Alimentari , Genoa , Italy
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