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Leon RM, Issa MG, Duque MD, Daniel JSP, Ferraz HG. Development of a Discriminative Dissolution Method, Using In-Silico Tool for Hydrochlorothiazide and Valsartan Tablets. Pharmaceutics 2023; 15:1735. [PMID: 37376183 DOI: 10.3390/pharmaceutics15061735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/26/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023] Open
Abstract
Hydrochlorothiazide (HTZ) and Valsartan (VAL) are poorly soluble drugs in BCS classes IV and II. This study aimed to develop a method to assess the dissolution profile of tablets containing HTZ (12.5 mg) and VAL (160 mg) as a fixed-dose combination, using in silico tools to evaluate products marketed in Brazil and Peru. Firstly, in vitro dissolution tests were performed using a fractional factorial design 33-1. Then, DDDPlus™ was used to carry out experimental design assays of a complete factorial design 33. Data from the first stage were used to obtain calibration constants for in silico simulations. The factors used in both designs were formulation, sinker use, and rotation speed. Finally, effects and factor interaction assessment was evaluated based on a statistical analysis of the dissolution efficiency (DE) obtained from simulations. Thus, the established final conditions of the dissolution method were 900 mL of phosphate buffer pH 6.8, 75 rpm of rotation speed, and sinker use to prevent formulation floating. The reference product stood out because of its higher DE than other formulations. It was concluded that the proposed method, in addition to ensuring total HTZ and VAL release from formulations, has adequate discriminative power.
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Affiliation(s)
- Rosmery Merma Leon
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Universidade de São Paulo-USP, Av. Prof. Lineu Prestes, 580, São Paulo 05508-080, SP, Brazil
| | - Michele Georges Issa
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Universidade de São Paulo-USP, Av. Prof. Lineu Prestes, 580, São Paulo 05508-080, SP, Brazil
| | - Marcelo Dutra Duque
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo-UNIFESP, Rua São Nicolau, 210 Centro, Diadema 09913-030, SP, Brazil
| | - Josiane Souza Pereira Daniel
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Universidade de São Paulo-USP, Av. Prof. Lineu Prestes, 580, São Paulo 05508-080, SP, Brazil
| | - Humberto Gomes Ferraz
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Universidade de São Paulo-USP, Av. Prof. Lineu Prestes, 580, São Paulo 05508-080, SP, Brazil
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2
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Mosley RJ, Hart J, Davis KL, Wower J, Byrne ME. Tailored Nucleic Acid Architectures at Gold Surfaces for Controlled Therapeutic Release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:1698-1704. [PMID: 35073106 DOI: 10.1021/acs.langmuir.1c02718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nucleic acids are versatile materials capable of forming smart nanocarriers with highly controllable therapeutic delivery. DNA-gated release is a mechanism by which DNA oligonucleotides physically block the release of encapsulated drugs from porous nanoparticles. We extend this mechanism to be used with drugs bound to the surface of DNA-capped gold nanoparticles (AuNPs). We investigated DNA monolayers of different thicknesses and hybridization states to determine how DNA surface architecture can affect the release of a template drug bound to the gold surface. DNA layers are investigated on the planar gold surface via quartz crystal microbalance with dissipation and on AuNPs via dynamic light scattering. The resultant layer architectures were studied for their effect on the release rate of drugs. We observed that varying DNA architectures on AuNPs result in different release rates of the drug. The rate of drug release can be slowed using either folded or randomly coiled DNA sequences, which act as a physical barrier to diffusion. DNA monolayers with upright orientation release drugs more quickly. When the longer single-stranded DNA is used, the drug release is slowed even further. However, even upright DNA layers provide a barrier to drug diffusion at longer sequence lengths. We hypothesize that it is the architecture of the DNA layer, influenced by the folded or upright orientation of individual DNA molecules, that affects the free diffusion of the drug away from the AuNP surface. This mechanism may improve the biological availability of many surface-bound drugs on solid, DNA-capped nanoparticles.
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Affiliation(s)
- Robert J Mosley
- Biomimetic and Biohybrid Materials, Biomedical Devices, and Drug Delivery Laboratories, Department of Biomedical Engineering, Rowan University, Glassboro, New Jersey 08028, United States
| | - Julia Hart
- Biomimetic and Biohybrid Materials, Biomedical Devices, and Drug Delivery Laboratories, Department of Biomedical Engineering, Rowan University, Glassboro, New Jersey 08028, United States
| | - Kadie L Davis
- Biomimetic and Biohybrid Materials, Biomedical Devices, and Drug Delivery Laboratories, Department of Biomedical Engineering, Rowan University, Glassboro, New Jersey 08028, United States
| | - Jacek Wower
- RNA Biochemistry Laboratories, Department of Animal Sciences, Auburn University, Auburn, Alabama 36849, United States
| | - Mark E Byrne
- Biomimetic and Biohybrid Materials, Biomedical Devices, and Drug Delivery Laboratories, Department of Biomedical Engineering, Rowan University, Glassboro, New Jersey 08028, United States
- Department of Chemical Engineering, Rowan University, Glassboro, New Jersey 08028, United States
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3
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The role of sodium alginate and gellan gum in the design of new drug delivery systems intended for antibiofilm activity of morin. Int J Biol Macromol 2020; 162:1944-1958. [PMID: 32791274 DOI: 10.1016/j.ijbiomac.2020.08.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 08/06/2020] [Accepted: 08/08/2020] [Indexed: 11/22/2022]
Abstract
The use of controlled drug delivery systems represents an alternative and promising strategy for the use of antimicrobials in the oral cavity. Microparticles, films and oral tablets based on alginate and gellan gum were developed also as a strategy to overcome the low aqueous solubility of morin. The systems were characterized in terms of morphological characteristics, mucoadhesion and in vitro drug release. Antibiofilm activity was analyzed for acidogenicity, microbial viability and the composition of the extracellular matrix of single-species biofilms. Scanning Electron Microscopy demonstrated that the microparticles were spherical, rough and compact. The film and the tablet presented smooth and continuous surface and in the inner of the tablet was porous. These systems were more mucoadhesive compared to the microparticles. The in vitro morin release profiles in artificial saliva demonstrated that the microparticles controlled the release better (39.6%), followed by the film (41.1%) and the tablet (91.4%) after 20 h of testing. The morin released from the systems reduced the acidogenicity, microbial viability, concentration of insoluble extracellular polysaccharides and dry weight of biofilms, when compared to the control group. The findings of this study showed that the morin has antibiofilm activity against cariogenic microorganisms.
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Ciro Y, Rojas J, Alhajj MJ, Carabali GA, Salamanca CH. Production and Characterization of Chitosan-Polyanion Nanoparticles by Polyelectrolyte Complexation Assisted by High-Intensity Sonication for the Modified Release of Methotrexate. Pharmaceuticals (Basel) 2020; 13:E11. [PMID: 31936208 PMCID: PMC7168905 DOI: 10.3390/ph13010011] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/03/2020] [Accepted: 01/05/2020] [Indexed: 01/01/2023] Open
Abstract
A promising strategy to improve the effectivity of anticancer treatment and decrease its side effects is to modulate drug release by using nanoparticulates (NPs) as carriers. In this study, methotrexate-loaded chitosan-polyanion nanoparticles were produced by polyelectrolyte complexation assisted by high-intensity sonication, using several anionic polymers, such as the sodium and potassium salts of poly(maleic acid-alt-ethylene) and poly(maleic acid-alt-octadecene), here named PAM-2 and PAM-18, respectively. Such NPs were analyzed and characterized according to particle size, polydispersity index, zeta potential and encapsulation efficiency. Likewise, their physical stability was tested at 4 °C and 40 °C in order to evaluate any change in the previously mentioned particle parameters. The in vitro methotrexate release was assessed at a pH of 7.4, which simulated physiological conditions, and the data were fitted to the heuristic models of order one, Higuchi, Peppas-Sahlin and Korsmeyer-Peppas. The results revealed that most of the MTX-chitosan-polyanion NPs have positive zeta potential values, sizes <280 nm and monodisperse populations, except for the NPs formed with PAM-18 polyanions. Further, the NPs showed adequate physical stability, preventing NP-NP aggregation. Likewise, these carriers modified the MTX release by an anomalous mechanism, where the NPs formed with PAM-2 polymer led to a release mechanism controlled by diffusion and relaxation, whereas the NPs formed with PAM-18 led to a mainly diffusion-controlled release mechanism.
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Affiliation(s)
- Yhors Ciro
- Department of Pharmacy, School of Pharmaceutical and Food Sciences, University of Antioquia, 67 Street No. 53-108, Medellín 050010, Colombia;
| | - John Rojas
- Department of Pharmacy, School of Pharmaceutical and Food Sciences, University of Antioquia, 67 Street No. 53-108, Medellín 050010, Colombia;
| | - Maria J. Alhajj
- Laboratorio de Diseño y Formulación de Productos Químicos y Derivados, Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Naturales, Universidad ICESI, Calle 18 No. 122-135, Cali 760035, Colombia; (M.J.A.); (G.A.C.)
| | - Gustavo A. Carabali
- Laboratorio de Diseño y Formulación de Productos Químicos y Derivados, Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Naturales, Universidad ICESI, Calle 18 No. 122-135, Cali 760035, Colombia; (M.J.A.); (G.A.C.)
| | - Constain H. Salamanca
- Laboratorio de Diseño y Formulación de Productos Químicos y Derivados, Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Naturales, Universidad ICESI, Calle 18 No. 122-135, Cali 760035, Colombia; (M.J.A.); (G.A.C.)
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Ciro Y, Rojas J, Oñate-Garzon J, Salamanca CH. Synthesis, Characterisation and Biological Evaluation of Ampicillin-Chitosan-Polyanion Nanoparticles Produced by Ionic Gelation and Polyelectrolyte Complexation Assisted by High-Intensity Sonication. Polymers (Basel) 2019; 11:E1758. [PMID: 31731554 PMCID: PMC6918291 DOI: 10.3390/polym11111758] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/17/2019] [Accepted: 10/21/2019] [Indexed: 11/16/2022] Open
Abstract
Recently, one of the promising strategies to fight sensitive and resistant bacteria, and decrease the morbidity and mortality rates due to non-nosocomial infections, is to use antibiotic-loaded nanoparticles. In this study, ampicillin-loaded chitosan-polyanion nanoparticles were produced through the techniques of ionic gelation and polyelectrolyte complexation assisted by high-intensity sonication, using several crosslinking agents, including phytic acid (non-polymeric polyanion), sodium and potassium salts of poly(maleic acid-alt-ethylene) and poly(maleic acid-alt-octadecene) (polymeric polyanions). These nanoparticles were analysed and characterised in terms of particle size, polydispersity index, zeta potential and encapsulation efficiency. The stability of these nanosystems was carried out at temperatures of 4 and 40 °C, and the antimicrobial effect was determined by the broth microdilution method using sensitive and resistant Staphylococcus aureus strains. The results reveal that most of the nanosystems have sizes <220 nm, positive zeta potential values and a monodisperse population, except for the nanoparticles crosslinked with PAM-18 polyanions. The nanometric systems exhibited adequate stability preventing aggregation and revealed a two-fold increase in antimicrobial activity when compared with free ampicillin. This study demonstrates the potential application of synthesised nanoparticles in the field of medicine, especially for treating infections caused by pathogenic S. aureus strains.
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Affiliation(s)
- Yhors Ciro
- Department of Pharmacy, School of Pharmaceutical and Food Sciences, University of Antioquia, Medellín 050025, Colombia; (Y.C.); (J.R.)
| | - John Rojas
- Department of Pharmacy, School of Pharmaceutical and Food Sciences, University of Antioquia, Medellín 050025, Colombia; (Y.C.); (J.R.)
| | - Jose Oñate-Garzon
- Grupo de Investigación en Química y Biotecnología (QUIBIO), Facultad de Ciencias Básicas, Universidad Santiago de Cali, calle 5 No. 62-00, Cali 760035, Colombia;
| | - Constain H. Salamanca
- Laboratorio de Diseño y Formulación de Productos Químicos y Derivados, Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Naturales, Universidad ICESI, Calle 18 No. 122-135, Cali 760035, Colombia
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6
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Gutiérrez A, Gomez J, Yarce CJ, Salamanca CH. Pre-formulation studies for water-dispersible powdered beverages using contact angles and wetting properties. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.05.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Relationship between Degree of Polymeric Ionisation and Hydrolytic Degradation of Eudragit ® E Polymers under Extreme Acid Conditions. Polymers (Basel) 2019; 11:polym11061010. [PMID: 31181597 PMCID: PMC6630213 DOI: 10.3390/polym11061010] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/21/2019] [Accepted: 06/05/2019] [Indexed: 11/17/2022] Open
Abstract
The commercial copolymers Eudragit® E 100 and Eudragit® PO are widely used materials in the pharmaceutical field as coating systems. Such materials derived from amino-methacrylate groups under acidulated conditions may acquire an ionisable fraction or undergo hydrolytic degradation of the polymeric structure. This work focused on establishing the chemical, physical, and surface changes of two reprocessed polymeric materials, here named as EuCl-E-100 and EuCl-E-PO, which were obtained from the commercial Eudragit® E 100 and Eudragit® E PO, respectively. The commercial materials were exposed to extreme acid conditions, where the polymers were solubilised and subsequently dried by the refractance window method. The materials obtained were chemically characterised by potentiometric titration, nuclear magnetic resonance spectroscopy (1H NMR and 13C NMR) in one and two dimensions (COSY, HSQC, and HMBC), infrared spectroscopy, X-ray diffraction, and differential scanning calorimetry. Changes in the physical properties of the materials were evaluated through studies of flowability, compactability, and their ability to gain and lose humidity. Surface thermodynamic studies were carried out through contact angle measurements using the sessile drop method. The results showed that the processed polymeric materials acquired a substantial degree of ionisation without undergoing hydrolysis of the esterified groups. Furthermore, such changes improved the flow characteristics of the material and the solubility in aqueous media at pH > 5, while also maintaining the hydrophobicity degree of the polymeric surface.
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8
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Rojewska M, Bartkowiak A, Milanowski B, Prochaska K, Lulek J. Physicochemical and release studies of new mucoadhesive fluconazole delivery systems. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.12.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Nirwan JS, Conway BR, Ghori MU. In situ3D nanoscale advanced imaging algorithms with integrated chemical imaging for the characterisation of pharmaceuticals. RSC Adv 2019; 9:16119-16129. [PMID: 35521370 PMCID: PMC9064367 DOI: 10.1039/c9ra01434a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 05/26/2019] [Indexed: 11/21/2022] Open
Abstract
Nanoscale chemical imaging technique for simultaneous quantification of swelling, erosion, drug release and 3D surface topography with full surface scanning.
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Affiliation(s)
- Jorabar Singh Nirwan
- Department of Pharmacy
- School of Applied Sciences
- University of Huddersfield
- Huddersfield
- UK HD1 3DH
| | - Barbara R. Conway
- Department of Pharmacy
- School of Applied Sciences
- University of Huddersfield
- Huddersfield
- UK HD1 3DH
| | - Muhammad Usman Ghori
- Department of Pharmacy
- School of Applied Sciences
- University of Huddersfield
- Huddersfield
- UK HD1 3DH
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10
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Yarce CJ, Echeverri JD, Salamanca CH. Effect of the Surface Hydrophobicity Degree on the In Vitro Release of Polar and Non-Polar Drugs from Polyelectrolyte Matrix Tablets. Polymers (Basel) 2018; 10:polym10121313. [PMID: 30961238 PMCID: PMC6401953 DOI: 10.3390/polym10121313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 11/23/2018] [Accepted: 11/23/2018] [Indexed: 12/04/2022] Open
Abstract
This work is the continuation of a series of studies focused on establishing the relationship between the surface thermodynamic properties of polyelectrolyte matrix tablets and drug release mechanisms. In this case, two model drugs with different polarity features, such as carbamazepine (non-polar) and metoprolol succinate (polar) were used in combination with polymeric material hydroxypropyl-methyl cellulose (HPMC) and two polyelectrolytes derived from maleic anhydride corresponding to the sodium salts of poly(maleic acid-alt-ethylene) and poly(maleic acid-alt-octadecene) named PAM-0Na and PAM-18Na, respectively. The polymers were obtained and characterized as reported previously. Surface studies were performed by the sessile drop method, whilst the surface free energy was determined through Owens, Wendt, Rable and Kaeble (OWRK) semi-empirical model. By contrast, the drug release studies were performed by in vitro dissolution tests, where data were analyzed through dissolution efficiency. The results showed that, depending on the drug polarity, type and polymer proportion, surface properties and drug release processes are significantly affected.
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Affiliation(s)
- Cristhian J Yarce
- Programa de Maestría en Formulación de Productos Químicos y Derivados, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122-135, Cali 76003, Colombia.
| | - Juan D Echeverri
- Programa de Maestría en Formulación de Productos Químicos y Derivados, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122-135, Cali 76003, Colombia.
| | - Constain H Salamanca
- Programa de Maestría en Formulación de Productos Químicos y Derivados, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122-135, Cali 76003, Colombia.
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Use of seed gums from Tamarindus indica and Cassia fistula as controlled-release agents. Asian J Pharm Sci 2018; 13:398-408. [PMID: 32104414 PMCID: PMC7032240 DOI: 10.1016/j.ajps.2018.02.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 01/24/2018] [Accepted: 02/26/2018] [Indexed: 11/25/2022] Open
Abstract
Most seed gums have been widely used in oral and topical pharmaceutical formulations, cosmetics, and food products because of their hydrophilic properties. Gums from Tamariudus indica and Cassia fistula seeds were chemically modified by carboxymethylation to improve their functionalities. The objective of the present study was to characterize and evaluate crude and carboxymethylated gums from T. indica and C. fistula seeds to achieve the controlled-release of diclofenac sodium (DS) in matrix tablet form. Both crude and carboxymethylated gums were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. The results revealed that the gums were successfully modified by carboxymethylation and that the modified gums were amorphous in structure and had better flow properties. The carboxymethylated gums from both plant seeds did not exhibit cytotoxicity at concentrations lower than 0.5 mg/ml. All gum samples used as polymeric controlled-release agents were formulated into DS matrix tablets. Hardness and thickness tests were conducted as in-process tests. Drug content estimation and in vitro drug release studies were carried out to evaluate the matrix tablets. Increasing the concentration of gums increased compression time and hardness while it reduced the thickness. Furthermore, the results fitted well with the Korsmeyer–Peppas model. Moreover, the DS tablets were found to release the drug by super case II transport (relaxation). In summary, the carboxymethylated gum from T. indica and C. fistula seeds is an excellent, naturally sourced gum with high physicochemical and functional qualities, and can potentially be used in pharmaceutical applications as a disintegrant, diluent, and drug release-controlling agent.
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Salamanca CH, Yarce CJ, Moreno RA, Prieto V, Recalde J. Natural gum-type biopolymers as potential modified nonpolar drug release systems. Carbohydr Polym 2018; 189:31-38. [PMID: 29580414 DOI: 10.1016/j.carbpol.2018.02.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 01/10/2018] [Accepted: 02/03/2018] [Indexed: 11/29/2022]
Abstract
In this work, the relationship between surface properties and drug release mechanism from binary composition tablets formed by quetiapine fumarate and biopolymer materials was studied. The biopolymers correspond to xanthan and tragacanth gums, which are projected as modified drug release systems. The surface studies were carried out by the sessile drop method, while the surface free energy (SFE) was determinate through Young-Dupree and OWRK semi-empirical models. On the other hand, the drug release studies were performed by in vitro dissolution tests, where the data were analyzed through kinetic models of zero order, first order, Higuchi, and Korsmeyer-Peppas. The results showed that depending on the type and the proportion of biopolymer, surface properties, and the drug release processes are significantly affected, wherein tragacanth gum present a usual erosion mechanism, while xanthan gum describes a swelling mechanism that controls the release of the drug.
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Affiliation(s)
- Constain H Salamanca
- Universidad Icesi, Facultad de Ciencias Naturales, Programa de Maestría en Formulación de Productos Químicos y Derivados, Colombia; Departamento de Ciencias Farmacéuticas, Calle 18 No. 122 -135, Cali 760031, Colombia.
| | - Cristhian J Yarce
- Universidad Icesi, Facultad de Ciencias Naturales, Programa de Maestría en Formulación de Productos Químicos y Derivados, Colombia
| | - Roger A Moreno
- Departamento de Ciencias Farmacéuticas, Calle 18 No. 122 -135, Cali 760031, Colombia
| | - Vanessa Prieto
- Departamento de Ciencias Farmacéuticas, Calle 18 No. 122 -135, Cali 760031, Colombia
| | - Juanita Recalde
- Departamento de Ciencias Farmacéuticas, Calle 18 No. 122 -135, Cali 760031, Colombia
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Salamanca CH, Yarce CJ, Zapata CA, Giraldo JA. Relationship between the Polymeric Ionization Degree and Powder and Surface Properties in Materials Derived from Poly(maleic anhydride-alt-octadecene). Molecules 2018; 23:molecules23020320. [PMID: 29393883 PMCID: PMC6017054 DOI: 10.3390/molecules23020320] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/17/2018] [Accepted: 02/01/2018] [Indexed: 11/16/2022] Open
Abstract
Polymeric materials derived from poly(maleic anhydride-alt-octadecene)-here referred as PAM-18-have shown interesting properties that make them potential pharmaceutical excipients. In this work, eight polymers derived from PAM-18 were obtained using NaOH and KOH at 1:1; 1:0.75, 1:0.5, and 1:0.25 molar ratios. The resulting products were labeled as PAM-18Na and PAM-18K, respectively. Each polymer was purified by ultrafiltration/lyophilization, and the ionization degree was determined by potentiometric studies, which was related to the zeta potential. The structural characterization was performed using the Fourier transform infrared (FT-IR) espectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and X-ray diffraction (XRD) techniques. The physical characterization was carried out by SEM, particle analysis, and humidity loss and gain studies; the surface studies were performed by the sessile drop method. PAM-18Na had ionization degrees of 95%, 63%, 39% and 22%, whereas those for PAM-18K were 99%, 52%, 35% and 20%, respectively. The results also showed that for higher inorganic base amounts used, the polymeric materials obtained possess high ionization degrees, which could form polymeric solutions or hetero-dispersed systems. Likewise, it was observed that for higher proportions of carboxylate groups in the polymeric structure, the capability to retain water is increased and, only can be eliminated by drying at temperatures greater than 160 °C. On the other hand, the modification of PAM-18 to its ionized forms led to the formation of powder materials with low flowability and surfaces that ranged from very hydrophobic to slightly wettable.
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Affiliation(s)
- Constain H Salamanca
- Programa de Maestría en Formulación de Productos Químicosy Derivados, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122-135, Cali 760031, Colombia.
- Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122-135, Cali 760031, Colombia.
| | - Cristhian J Yarce
- Programa de Maestría en Formulación de Productos Químicosy Derivados, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122-135, Cali 760031, Colombia.
| | - Camilo A Zapata
- Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122-135, Cali 760031, Colombia.
| | - Jonnathan A Giraldo
- Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122-135, Cali 760031, Colombia.
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Wen H, Li X, Li Y, Wang H, Wang Y, Wang T, Pan W, Yang X. In vitro and in vivo evaluation of controlled-release matrix tablets of highly water-soluble drug applying different mw polyethylene oxides (PEO) as retardants. Drug Dev Ind Pharm 2017; 44:544-552. [DOI: 10.1080/03639045.2017.1405429] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Haoyang Wen
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, China
| | - Xue Li
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, China
| | - Yuenan Li
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, China
| | - Haiying Wang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, China
| | - Yanyan Wang
- Lianyungang TCM Branch of Jiangsu Union Technical Institute, Lianyungang, Jiangsu, China
| | - Tuanjie Wang
- Jiangsu Kanion Parmaceutical CO. LTD, Lianyungang, Jiangsu, China
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Lianyungang, Jiangsu, China
| | - Weisan Pan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, China
| | - Xinggang Yang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, China
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Lianyungang, Jiangsu, China
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