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Akpo E, Colin C, Perrin A, Cambedouzou J, Cornu D. Encapsulation of Active Substances in Natural Polymer Coatings. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2774. [PMID: 38894037 PMCID: PMC11173946 DOI: 10.3390/ma17112774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 05/30/2024] [Accepted: 06/04/2024] [Indexed: 06/21/2024]
Abstract
Already used in the food, pharmaceutical, cosmetic, and agrochemical industries, encapsulation is a strategy used to protect active ingredients from external degradation factors and to control their release kinetics. Various encapsulation techniques have been studied, both to optimise the level of protection with respect to the nature of the aggressor and to favour a release mechanism between diffusion of the active compounds and degradation of the barrier material. Biopolymers are of particular interest as wall materials because of their biocompatibility, biodegradability, and non-toxicity. By forming a stable hydrogel around the drug, they provide a 'smart' barrier whose behaviour can change in response to environmental conditions. After a comprehensive description of the concept of encapsulation and the main technologies used to achieve encapsulation, including micro- and nano-gels, the mechanisms of controlled release of active compounds are presented. A panorama of natural polymers as wall materials is then presented, highlighting the main results associated with each polymer and attempting to identify the most cost-effective and suitable methods in terms of the encapsulated drug.
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Affiliation(s)
| | | | | | - Julien Cambedouzou
- IEM, Université de Montpellier, CNRS, ENSCM, F-34095 Montpellier, France
| | - David Cornu
- IEM, Université de Montpellier, CNRS, ENSCM, F-34095 Montpellier, France
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Sharma D, Sharma A, Bala R, Singh B. Investigations on physiochemical and biomedical properties of Aloe vera - Sterculia gum copolymeric dressings impregnated with antibiotic-anesthetic drugs to enhance wound healing. Int J Biol Macromol 2024; 267:131363. [PMID: 38583847 DOI: 10.1016/j.ijbiomac.2024.131363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 03/30/2024] [Accepted: 04/02/2024] [Indexed: 04/09/2024]
Abstract
Recently, various innovative advancements have been made in carbohydrate research to design versatile materials for biomedical applications. The current research focuses on the development of copolymeric hydrogel wound dressings (HWD) using a combination of aloe vera (AV) - sterculia gum (SG) - poly (vinylsulfonic acid) (VSA)-based with the aim to enhancing their efficacy in drug delivery (DD) applications. These hydrogel dressings were encapsulated with levofloxacin and lidocaine to address both microbial infection and pain. Copolymers were characterized by FESEM, SEM, EDS, AFM, 13C NMR, FTIR, XRD, and TGA-DTG analysis. Hydrogel exhibited a fluid absorption capacity of 4.52 ± 0.12 g per gram of polymeric dressing in simulated wound conditions. The hydrogels displayed a sustained release of drugs, demonstrating a non-Fickian diffusion mechanism. Polymer dressings revealed antibacterial, mucoadhesive, antioxidant, biocompatible and non-cytotoxic properties. Additionally, HWD displayed permeability to O2 and water vapour, yet was impermeable to microbial penetration. Overall, the findings of physiological, biochemical and drug delivery properties demonstrated the suitability of materials for wound dressing applications.
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Affiliation(s)
- Diwanshi Sharma
- Department of Chemistry, Himachal Pradesh University, Shimla 171005, India
| | - Ashima Sharma
- Department of Physiology, Indira Gandhi Medical College, Shimla, Himachal Pradesh, India
| | - Ritu Bala
- Department of Chemistry, Government College Dharamshala, Himachal Pradesh, India
| | - Baljit Singh
- Department of Chemistry, Himachal Pradesh University, Shimla 171005, India.
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Gomte SS, Agnihotri TG, Khopade S, Jain A. Exploring the potential of pH-sensitive polymers in targeted drug delivery. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:228-268. [PMID: 37927045 DOI: 10.1080/09205063.2023.2279792] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/01/2023] [Indexed: 11/07/2023]
Abstract
The pH-sensitive polymers have attained significant attention in the arena of targeted drug delivery (TDD) because of their exceptional capability to respond to alteration in pH in various physiological environments. This attribute aids pH-sensitive polymers to act as smart carriers for therapeutic agents, transporting them precisely to target locations while curtailing the release of drugs in off-targeted sites, thereby diminishing side effects. Many pH-responsive polymers in TDD have revealed promising results, with increased therapeutic efficacy and decreased toxic effects. Several pH-sensitive polymers, including, hydroxy-propyl-methyl cellulose, poly (methacrylic acid) (Eudragit series), poly (acrylic acid), and chitosan, have been broadly studied for their myriad applications in the management of various types of diseases. Additionally, the amalgamation of pH-sensitive polymers with, additive manufacturing techniques like 3D printing, has resulted in the progression of novel drug delivery systems that regulate drug release in a controlled manner. Herein, types of pH-sensitive polymers in TDD are systemically reviewed. We have briefly discussed the nanocarriers employed for the delivery of various pH-sensitive polymers in TDD. Finally, miscellaneous applications of pH-sensitive polymers are discussed thoroughly with special attention to the implication of 3D printing in pH-sensitive polymers.
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Affiliation(s)
- Shyam Sudhakar Gomte
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, Gujarat, India
| | - Tejas Girish Agnihotri
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, Gujarat, India
| | - Shivani Khopade
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, Gujarat, India
| | - Aakanchha Jain
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Palaj, Gandhinagar, Gujarat, India
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Rana VS, Sharma N. Adsorption profile of anionic and cationic dyes through Fe 3O 4 embedded oxidized Sterculia gum/Gelatin hybrid gel matrix. Int J Biol Macromol 2023; 232:123098. [PMID: 36681219 DOI: 10.1016/j.ijbiomac.2022.12.317] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/12/2022] [Accepted: 12/28/2022] [Indexed: 01/20/2023]
Abstract
Hazardous effluents from textile industries being major contributors of water pollution and impose potential adverse effects on environment. In present study, Fe3O4 embedded oxidized Sterculia gum/Gelatin hybrid matrix have been fabricated and evaluated for enrichment of methyl orange (MO) and methylene blue (MB). Newly synthesized matrix was characterized through powdered XRD, FTIR, FESEM, TEM and TGA. Integrated nanoparticles improved dye enrichment and facilitated removal of matrix from the aqueous solution under the influence of magnetic field. Influence of various reaction parameters viz.: contact time, adsorbent dose, initial dye concentration, temperature & pH of the adsorption medium on dye enrichment have been evaluated. Maximum adsorption (90 % and 88 % for MO and MB respectively) has been achieved. Langmuir, Freundlich and Tempkin adsorption isotherms have been evaluated. Experimental results validate well fitted Freundlich isotherm for MO and Temkin isotherm for MB. Adsorption kinetics has been analyzed through Pseudo first order, second order kinetic and intra particle diffusion models. Adsorption of both dyes was best explained via pseudo second order kinetic model. Negative value of Gibb's free energy change (-26.487 KJ mol -1 and - 24.262 KJ mol -1) for MB and MO at 303 K was an indication of spontaneity of the reaction.
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Affiliation(s)
- Vikrant Singh Rana
- Department of Physical Sciences, Sant Baba Bhag Singh University, Jalandhar, Punjab 144030, India; Department of Chemistry, S.G.G.S. Khalsa College, Mahilpur, District Hoshiarpur, Punjab 146105, India
| | - Nisha Sharma
- Department of Physical Sciences, Sant Baba Bhag Singh University, Jalandhar, Punjab 144030, India.
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Froelich A, Jakubowska E, Jadach B, Gadziński P, Osmałek T. Natural Gums in Drug-Loaded Micro- and Nanogels. Pharmaceutics 2023; 15:pharmaceutics15030759. [PMID: 36986620 PMCID: PMC10059891 DOI: 10.3390/pharmaceutics15030759] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/15/2023] [Accepted: 02/21/2023] [Indexed: 03/03/2023] Open
Abstract
Gums are polysaccharide compounds obtained from natural sources, such as plants, algae and bacteria. Because of their excellent biocompatibility and biodegradability, as well as their ability to swell and their sensitivity to degradation by the colon microbiome, they are regarded as interesting potential drug carriers. In order to obtain properties differing from the original compounds, blends with other polymers and chemical modifications are usually applied. Gums and gum-derived compounds can be applied in the form of macroscopic hydrogels or can be formulated into particulate systems that can deliver the drugs via different administration routes. In this review, we present and summarize the most recent studies regarding micro- and nanoparticles obtained with the use of gums extensively investigated in pharmaceutical technology, their derivatives and blends with other polymers. This review focuses on the most important aspects of micro- and nanoparticulate systems formulation and their application as drug carriers, as well as the challenges related to these formulations.
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Recent Progress on Modified Gum Katira Polysaccharides and Their Various Potential Applications. Polymers (Basel) 2022; 14:polym14173648. [PMID: 36080723 PMCID: PMC9460252 DOI: 10.3390/polym14173648] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/17/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
Gum katira polysaccharide is biocompatible and non-toxic, and has antioxidant, anti-microbial, and immunomodulatory properties. It is a natural polysaccharide and exudate derived from the stem bark of Cochlospermum reliogosum Linn. Additionally, it has many traditional medicinal uses as a sedative and for the treatment of jaundice, gonorrhea, syphilis, and stomach ailments. This article provides an overview of gum katira, including its extraction, separation, purification, and physiochemical properties and details of its characterization and pharmacognostic features. This paper takes an in-depth look at the synthetic methods used to modify gum katira, such as carboxymethylation and grafting triggered by free radicals. Furthermore, this review provides an overview of its industrial and phytopharmacological applications for drug delivery and heavy metal and dye removal, its biological activities, its use in food, and the potential use of gum katira derivatives and their industrial applications. We believe researchers will find this paper useful for developing techniques to modify gum katira polysaccharides to meet future demands.
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Chen S, Zhu H, Luo Y. Chitosan-based oral colon-specific delivery systems for polyphenols: recent advances and emerging trends. J Mater Chem B 2022; 10:7328-7348. [PMID: 35766297 DOI: 10.1039/d2tb00874b] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Oral colon-targeted delivery systems (OCDSs) have attracted great attention in the delivery of active compounds targeted to the colon for the treatment of colon and non-colon diseases with the advantages of enhanced efficacy and reduced side effects. Chitosan, the second-most abundant biopolymer next to cellulose, has great biocompatibility, is non-toxic, is sensitive to colonic flora and shows strong adhesion to colonic mucus, making it an ideal biomaterial candidate for the construction of OCDSs. Being rich in functional groups, the chitosan structure is easily modified, both physically and chemically, for the fabrication of delivery systems with diverse geometries, including nanoparticles, microspheres/microparticles, and hydrogels, that are resistant to the harsh environment of the upper gastrointestinal tract (GIT). This review offers a detailed overview of the preparation of chitosan-based delivery systems as the basis for building OCDSs. A variety of natural polyphenols with potent biological activities are used to treat diseases of the colon, or to be metabolized as active ingredients by colonic microorganisms to intervene in remote organ diseases after absorption into the circulation. However, the poor solubility of polyphenols limits their application, and the acidic environment of the upper GIT and various enzymes in the small intestine disrupt their structure and activity. As a result, the development of OCDSs for polyphenols has become an emerging and popular area of current research in the past decade. Thus, the second objective of this review is to systematically summarize the most recent research findings in this area and shed light on the future development of chitosan-based OCDSs for nutritional and biomedical applications.
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Affiliation(s)
- Sunni Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Honglin Zhu
- Nanotechnology and Biodelivery Laboratory, Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA.
| | - Yangchao Luo
- Nanotechnology and Biodelivery Laboratory, Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA.
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Fabrication of 5-fluorouracil-loaded tablets with hyperbranched polyester by digital light processing 3D printing technology. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111190] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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9
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Recent development in the medical and industrial applications of gum karaya: a review. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04227-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Glass Transition Temperature of PLGA Particles and the Influence on Drug Delivery Applications. Polymers (Basel) 2022; 14:polym14050993. [PMID: 35267816 PMCID: PMC8912735 DOI: 10.3390/polym14050993] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 12/31/2022] Open
Abstract
Over recent decades, poly(lactic-co-glycolic acid) (PLGA) based nano- and micro- drug delivery vehicles have been rapidly developed since PLGA was approved by the Food and Drug Administration (FDA). Common factors that influence PLGA particle properties have been extensively studied by researchers, such as particle size, polydispersity index (PDI), surface morphology, zeta potential, and drug loading efficiency. These properties have all been found to be key factors for determining the drug release kinetics of the drug delivery particles. For drug delivery applications the drug release behavior is a critical property, and PLGA drug delivery systems are still plagued with the issue of burst release when a large portion of the drug is suddenly released from the particle rather than the controlled release the particles are designed for. Other properties of the particles can play a role in the drug release behavior, such as the glass transition temperature (Tg). The Tg, however, is an underreported property of current PLGA based drug delivery systems. This review summarizes the basic knowledge of the glass transition temperature in PLGA particles, the factors that influence the Tg, the effect of Tg on drug release behavior, and presents the recent awareness of the influence of Tg on drug delivery applications.
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Silva JSFD, Oliveira ACDJ, Soares MFDLR, Soares-Sobrinho JL. Recent advances of Sterculia gums uses in drug delivery systems. Int J Biol Macromol 2021; 193:481-490. [PMID: 34710475 DOI: 10.1016/j.ijbiomac.2021.10.145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/19/2021] [Accepted: 10/19/2021] [Indexed: 11/16/2022]
Abstract
Trees of the genus Sterculia produce polysaccharide-rich exudates, such as karaya gum (Sterculia urens), chicha gum (Sterculia striata), and Sterculia foetida gum. These anionic biomaterials are biodegradable, with high viscosity, low toxicity, and gelling properties in aqueous media. According to these properties, they show promising applications as a polymer matrix for use in drug delivery systems. For this application, both the chemically modified and the unmodified polysaccharide are used. This review focuses on analyzing the state of the art of recent studies on the use of Sterculia gums in a variety of pharmaceutical forms, such as tablets, hydrogels, micro/nanoparticles, and mucoadhesive films. Sterculia gums-based delivery systems have potential to be explored for new drug delivery systems.
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Affiliation(s)
- Júlia Samara Ferreira da Silva
- Quality Control Core of Medicines and Correlates, Pharmaceutical Sciences Department, Federal University of Pernambuco, Recife, PE, Brazil
| | - Antônia Carla de Jesus Oliveira
- Quality Control Core of Medicines and Correlates, Pharmaceutical Sciences Department, Federal University of Pernambuco, Recife, PE, Brazil
| | - Mônica Felts de La Roca Soares
- Quality Control Core of Medicines and Correlates, Pharmaceutical Sciences Department, Federal University of Pernambuco, Recife, PE, Brazil
| | - José Lamartine Soares-Sobrinho
- Quality Control Core of Medicines and Correlates, Pharmaceutical Sciences Department, Federal University of Pernambuco, Recife, PE, Brazil.
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Su Y, Zhang B, Sun R, Liu W, Zhu Q, Zhang X, Wang R, Chen C. PLGA-based biodegradable microspheres in drug delivery: recent advances in research and application. Drug Deliv 2021; 28:1397-1418. [PMID: 34184949 PMCID: PMC8248937 DOI: 10.1080/10717544.2021.1938756] [Citation(s) in RCA: 161] [Impact Index Per Article: 53.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Biodegradable microspheres have been widely used in the field of medicine due to their ability to deliver drug molecules of various properties through multiple pathways and their advantages of low dose and low side effects. Poly (lactic-co-glycolic acid) copolymer (PLGA) is one of the most widely used biodegradable material currently and has good biocompatibility. In application, PLGA with a specific monomer ratio (lactic acid and glycolic acid) can be selected according to the properties of drug molecules and the requirements of the drug release rate. PLGA-based biodegradable microspheres have been studied in the field of drug delivery, including the delivery of various anticancer drugs, protein or peptide drugs, bacterial or viral DNA, etc. This review describes the basic knowledge and current situation of PLGA biodegradable microspheres and discusses the selection of PLGA polymer materials. Then, the preparation methods of PLGA microspheres are introduced, including emulsification, microfluidic technology, electrospray, and spray drying. Finally, this review summarizes the application of PLGA microspheres in drug delivery and the treatment of pulmonary and ocular-related diseases.
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Affiliation(s)
- Yue Su
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Bolun Zhang
- Hunan Zaochen Nanorobot Co., Ltd, Liuyang, China
| | - Ruowei Sun
- Hunan Zaochen Nanorobot Co., Ltd, Liuyang, China
| | - Wenfang Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Qubo Zhu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Xun Zhang
- Hunan Zaochen Nanorobot Co., Ltd, Liuyang, China
| | | | - Chuanpin Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
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Hani U, Honnavalli YK, Begum MY, Yasmin S, Osmani RAM, Ansari MY. Colorectal cancer: A comprehensive review based on the novel drug delivery systems approach and its management. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102532] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Martín-Illana A, Cazorla-Luna R, Notario-Pérez F, Bedoya LM, Rubio J, Tamayo A, Ruiz-Caro R, Veiga MD. Smart vaginal bilayer films of Tenofovir based on Eudragit® L100/natural polymer for the prevention of the sexual transmission of HIV. Int J Pharm 2021; 602:120665. [PMID: 33933643 DOI: 10.1016/j.ijpharm.2021.120665] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/14/2021] [Accepted: 04/26/2021] [Indexed: 12/12/2022]
Abstract
In the absence of an effective vaccine, vaginal microbicides are essential for preventing the sexual transmission of HIV to women. Antiretroviral vaginal films have emerged as promising choices, especially those offering mucoadhesivity and controlled drug release. Tenofovir-loaded bilayer films based on Eudragit® L100 (EL100) and a biopolymer - gum arabic, karaya gum, pectin or tragacanth gum - were developed in a single-stage process. Cytotoxicity studies in three human cell lines indicated no toxicity of the excipients at the concentrations tested. Raman spectroscopy and SEM confirmed the formation of the two layers and their anchoring. Texture analysis showed no major differences between the batches. The swelling of the film is conditioned by its biopolymer nature and by the amount of EL100, which acts as structuring agent thus enhancing swelling. Tragacanth gum-based batches showed high mucoadhesion regardless the amount of EL100. The controlled release of Tenofovir in simulated vaginal fluid was faster in the presence of simulated seminal fluid due to the dissolution of EL100. Films containing 400 mg of EL100 and tragacanth gum are promising candidates for future studies, as they could sexually safeguard women from HIV for at least one week and ensure greater protection during intercourse.
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Affiliation(s)
- Araceli Martín-Illana
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
| | - Raúl Cazorla-Luna
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
| | - Fernando Notario-Pérez
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
| | - Luis Miguel Bedoya
- Department of Pharmacology, Pharmacognosy and Botany, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
| | - Juan Rubio
- Institute of Ceramics and Glass, Spanish National Research Council, C/ Kelsen 5, 28049 Madrid, Spain.
| | - Aitana Tamayo
- Institute of Ceramics and Glass, Spanish National Research Council, C/ Kelsen 5, 28049 Madrid, Spain.
| | - Roberto Ruiz-Caro
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
| | - María Dolores Veiga
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
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Raj V, Lee JH, Shim JJ, Lee J. Recent findings and future directions of grafted gum karaya polysaccharides and their various applications: A review. Carbohydr Polym 2021; 258:117687. [DOI: 10.1016/j.carbpol.2021.117687] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/18/2021] [Accepted: 01/18/2021] [Indexed: 02/07/2023]
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16
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Inclusion of capecitabine into cucurbiturils: DFT study for supramolecular encapsulation of anticancer drug. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-020-02724-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Patil SB, Inamdar SZ, Reddy KR, Raghu AV, Akamanchi KG, Inamadar AC, Das KK, Kulkarni RV. Functionally Tailored Electro-Sensitive Poly(Acrylamide)-g-Pectin Copolymer Hydrogel for Transdermal Drug Delivery Application: Synthesis, Characterization, In-vitro and Ex-vivo Evaluation. ACTA ACUST UNITED AC 2020. [DOI: 10.2174/2210303110666200206114632] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background and Objectives:
To develop electro-sensitive transdermal drug delivery systems (ETDDS) using
polyacrylamide-grafted-pectin (PAAm-g-PCT) copolymer hydrogel for rivastigmine delivery.
Methods:
Free radical polymerization and alkaline hydrolysis technique was employed to synthesize
PAAm-g-PCT copolymer hydrogel. The PAAm-g-PCT copolymeric hydrogel was used as a reservoir
and cross-linked blend films of PCT and poly(vinyl alcohol) as rate-controlling membranes (RCMs) to
prepare ETDDS.
Results:
The pH of the hydrogel reservoir was found to be in the range of 6.81 to 6.93 and drug content
was 89.05 to 96.29%. The thickness of RCMs was in the range of 51 to 99 μ and RCMs showed permeability
behavior against water vapors. There was a reduction in the water vapor transmission rate as
the glutaraldehyde (GA) concentration was increased. The drug permeation rate from the ETDDS was
enhanced under the influence of electric stimulus against the absence of an electric stimulus. The increase
in flux by 1.5 fold was recorded with applied electric stimulus. The reduction in drug permeability
observed when the concentration of GA was increased. Whereas, the permeability of the drug was
augmented as an electric current was changed from 2 to 8 mA. The pulsatile drug release under “on–
off” cycle of electric stimulus witnessed a faster drug release under ‘on’ condition and it was slow under
‘off’ condition. The alteration in skin composition after electrical stimulation was confirmed
through histopathology studies.
Conclusion:
The PAAm-g-PCT copolymer hydrogel is a useful carrier for transdermal drug delivery
activated by an electric signal to provide on-demand release of rivastigmine.
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Affiliation(s)
- Sudha B. Patil
- Department of Pharmaceutics, BLDEA’s SSM College of Pharmacy and Research Centre, Vijayapur 586 103, Karnataka, India
| | - Syed Z. Inamdar
- Department of Pharmaceutics, BLDEA’s SSM College of Pharmacy and Research Centre, Vijayapur 586 103, Karnataka, India
| | - Kakarla R. Reddy
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Anjanapura V. Raghu
- Department of Basic Sciences, School of Engineering & Technology, JAIN (Deemed-to-be University), Bangalore 562112, Karnataka, India
| | - Krishnamachari G. Akamanchi
- Department of Allied Health Sciences, Shri. B.M. Patil Medical College, Hospital & Research Centre, BLDE (Deemed to be University), Vijayapur 586 103, India
| | - Arun C. Inamadar
- Department of Dermatology, Shri. B.M. Patil Medical College, Hospital & Research Centre, BLDE (Deemed to be University), Vijayapur 586 103, India
| | - Kusal K. Das
- Department of Physiology, Shri. B.M. Patil Medical College, Hospital & Research Centre, BLDE (Deemed to be University), Vijayapur 586 103, India
| | - Raghavendra V. Kulkarni
- Department of Pharmaceutics, BLDEA’s SSM College of Pharmacy and Research Centre, Vijayapur 586 103, Karnataka, India
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New Insights of Oral Colonic Drug Delivery Systems for Inflammatory Bowel Disease Therapy. Int J Mol Sci 2020; 21:ijms21186502. [PMID: 32899548 PMCID: PMC7555849 DOI: 10.3390/ijms21186502] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/25/2020] [Accepted: 09/02/2020] [Indexed: 12/12/2022] Open
Abstract
Colonic Drug Delivery Systems (CDDS) are especially advantageous for local treatment of inflammatory bowel diseases (IBD). Site-targeted drug release allows to obtain a high drug concentration in injured tissues and less systemic adverse effects, as consequence of less/null drug absorption in small intestine. This review focused on the reported contributions in the last four years to improve the effectiveness of treatments of inflammatory bowel diseases. The work concludes that there has been an increase in the development of CDDS in which pH, specific enzymes, reactive oxygen species (ROS), or a combination of all of these triggers the release. These delivery systems demonstrated a therapeutic improvement with fewer adverse effects. Future perspectives to the treatment of this disease include the elucidation of molecular basis of IBD diseases in order to design more specific treatments, and the performance of more in vivo assays to validate the specificity and stability of the obtained systems.
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19
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Wang J, Zhang S, Xu X, Xing Y, Li Z, Wang J. Fast DNA Extraction with Polyacrylamide Microspheres for Polymerase Chain Reaction Detection. ACS OMEGA 2020; 5:13829-13839. [PMID: 32566849 PMCID: PMC7301550 DOI: 10.1021/acsomega.0c01181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 05/25/2020] [Indexed: 05/31/2023]
Abstract
The fast and cost-effective DNA extraction is critical for all DNA-based detections. Here, we fabricated a new kind of polyacrylamide microsphere (PAMMP) in various sizes with two methods, spot polymerization (large size but low yield) and modified inverse microemulsion polymerization (small size but high yield). The fabricated PAMMPs have strong autofluorescence (fPAMMPs), including both visible fluorescence (VF) and near-infrared fluorescence (NIRF), which can remain very stable in various stringent conditions including strong acid and alkali and high temperature. The fabricated fPAMMPs were also highly positively charged, which could be used to effectively capture various biomolecules such as IRDye 800-labeled streptavidin and DNA. We thus developed a new method for rapid extraction (3-5 min) of DNA from various samples including bacteria, mammalian cells, plant and animal solid tissues, and human blood plasma using fPAMMPs. Moreover, the DNA captured on fPAMMPs (fPAMMP@DNA) could be effectively detected by both normal and quantitative PCR amplifications. Finally, we showed that NaBH4 treatment removed autofluorescence in fPAMMPs (PAMMPs), which could also be applied to DNA extraction and PCR detection. In conclusion, we here fabricated new kinds of fPAMMPs and PAMMPs, developed a new rapid DNA extraction method, and demonstrated their useful applications in PCR detection.
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Affiliation(s)
- Jun Wang
- State
Key Laboratory of Bioelectronics, Southeast
University, Nanjing 210096, China
| | - Shuyan Zhang
- State
Key Laboratory of Bioelectronics, Southeast
University, Nanjing 210096, China
| | - Xinhui Xu
- State
Key Laboratory of Bioelectronics, Southeast
University, Nanjing 210096, China
| | - Yujun Xing
- Institute
of Food Quality Safety and Nutrition, Jiangsu
Academy of Agricultural Sciences, Nanjing 210014, China
| | - Zongru Li
- Department
of Chemical and Biological Engineering, McCormick School of Engineering, Northwestern University, Evanston 60208-3109, Illinois, United States
| | - Jinke Wang
- State
Key Laboratory of Bioelectronics, Southeast
University, Nanjing 210096, China
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Tailor-made electrically-responsive poly(acrylamide)-graft-pullulan copolymer based transdermal drug delivery systems: Synthesis, characterization, in-vitro and ex-vivo evaluation. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101525] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Singh B, Kumar A. Exploration of arabinogalactan of gum polysaccharide potential in hydrogel formation and controlled drug delivery applications. Int J Biol Macromol 2020; 147:482-492. [DOI: 10.1016/j.ijbiomac.2020.01.087] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 12/18/2019] [Accepted: 01/08/2020] [Indexed: 12/15/2022]
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22
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Gadalla HH, Mohammed FA, El-Sayed AM, Soliman GM. Colon-targeting of progesterone using hybrid polymeric microspheres improves its bioavailability and in vivo biological efficacy. Int J Pharm 2020; 577:119070. [PMID: 31981708 DOI: 10.1016/j.ijpharm.2020.119070] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/13/2020] [Accepted: 01/18/2020] [Indexed: 01/20/2023]
Abstract
This study aims to enhance progesterone (PG) oral bioavailability via its incorporation into hybrid colon-targeted pectin/NaCMC microspheres (MS) cross-linked with Zn2+ and Al3+. The MS were characterized for particle morphology, encapsulation efficiency, swelling behavior, drug release, mucoadhesivity and colon-specific degradability. Response-surface methodology was adopted to optimize the fabrication conditions. Enhancement of in vivo drug performance was evaluated through pharmacokinetic and pharmacodynamic studies. The optimized formulation was typically spherical with a mean diameter of 1031 µm and drug entrapment efficiency of 88.8%. This formulation exhibited pH-dependent swelling, negligible drug release in simulated gastric fluid and sustained-release pattern in simulated small intestinal fluid with a mean t50% of 26.5 h. It also showed prolonged and preferential adhesion to rat colonic mucosa, as well as expedited degradation in presence of rat caecal contents. The MS significantly increased the area under the curve and mean residence time by 1.8 and 2.3-fold, respectively compared to the free drug. Orally administered MS showed ~10 times increase in myometrial thickness compared with the drug suspension and elicited uterine responses very similar to that obtained parenterally. These results confirm the ability of this new carrier system to improve the oral bioavailability of PG and attain adequate clinical efficacy.
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Affiliation(s)
- Hytham H Gadalla
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Fergany A Mohammed
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Ahmed M El-Sayed
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Ghareb M Soliman
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt; Department of Pharmaceutics, Faculty of Pharmacy, University of Tabuk, Tabuk, Saudi Arabia.
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23
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Rahman M, Thananukul K, Supmak W, Petchsuk A, Opaprakasit P. Synthesis and quantitative analyses of acrylamide-grafted poly(lactide-co-glycidyl methacrylate) amphiphilic copolymers for environmental and biomedical applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 225:117447. [PMID: 31454688 DOI: 10.1016/j.saa.2019.117447] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/31/2019] [Accepted: 07/31/2019] [Indexed: 06/10/2023]
Abstract
Bio-degradable/bio-compatible poly(lactide-co-glycidyl methacrylate), P(LA-co-GMA), a copolymer has been synthesized. The material contains curable CC groups, which enable its self-curing and grafting reactions with other vinyl monomers. The copolymer was grafted with a pH-responsive polyacrylamide (PAAm), by UV-assisted reactions using acrylamide (AAm) and N,N'-methylene bisacrylamide monomers, and various photoinitiator systems. The original copolymer and its partially-cured counterpart were employed in the grafting reaction. Chemical structures and properties of the resulting materials were characterized. Standard quantitative analysis techniques for measurement of the grafted AAm content and the degree of CC conversion have been developed by 1H NMR and FTIR spectroscopy. FTIR offers more advantages, in terms of non-destructive analysis, ease of operation, and lower cost of analysis. The results show that the grafted products from pre-cured P(LA-co-GMA) copolymers contain higher grafted AAm contents than their uncured counterparts. The highest grafted AAm content was obtained by using benzophenone (BP) as an initiator, while camphorquinone (CQ) led to the lowest content. In contrast, the degree of CC conversion of the copolymer from the two initiator systems shows a reverse trend. These amphiphilic and pH-responsive grafted copolymers with tunable AAm contents have a high potential for use in various applications, especially in biomedical and environmental fields.
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Affiliation(s)
- Mijanur Rahman
- School of Biochemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University (TU), Pathum Thani 12121, Thailand.
| | - Kamonchanok Thananukul
- School of Biochemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University (TU), Pathum Thani 12121, Thailand
| | - Wilairat Supmak
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand.
| | - Atitsa Petchsuk
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand.
| | - Pakorn Opaprakasit
- School of Biochemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University (TU), Pathum Thani 12121, Thailand.
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24
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Singh B, Sharma K, Rajneesh, Dutt S. Dietary fiber tragacanth gum based hydrogels for use in drug delivery applications. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.bcdf.2019.100208] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Development and optimization of sustained release mucoadhesive composite beads for colon targeting. Int J Biol Macromol 2019; 139:320-331. [DOI: 10.1016/j.ijbiomac.2019.07.190] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 07/21/2019] [Accepted: 07/28/2019] [Indexed: 12/15/2022]
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26
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Novel pH-sensitive interpenetrated network polyspheres of polyacrylamide-g-locust bean gum and sodium alginate for intestinal targeting of ketoprofen: In vitro and in vivo evaluation. Colloids Surf B Biointerfaces 2019; 180:362-370. [DOI: 10.1016/j.colsurfb.2019.04.060] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 04/25/2019] [Accepted: 04/29/2019] [Indexed: 11/23/2022]
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27
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Novel biocompatible poly(acrylamide)-grafted-dextran hydrogels: Synthesis, characterization and biomedical applications. J Microbiol Methods 2019; 159:200-210. [DOI: 10.1016/j.mimet.2019.03.009] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/10/2019] [Accepted: 03/11/2019] [Indexed: 11/23/2022]
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28
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Birajdar RP, Patil SB, Alange VV, Kulkarni RV. Electro-responsive polyacrylamide-grafted-gum ghatti copolymer for transdermal drug delivery application. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2019.1574539] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ravindra P. Birajdar
- Department of Pharmaceutics, BLDEA’s SSM College of Pharmacy and Research Centre, Vijayapur (Bijapur), Karnataka, India
| | - Sudha B. Patil
- Department of Pharmaceutics, BLDEA’s SSM College of Pharmacy and Research Centre, Vijayapur (Bijapur), Karnataka, India
| | - Vijaykumar V. Alange
- Department of Pharmaceutics, BLDEA’s SSM College of Pharmacy and Research Centre, Vijayapur (Bijapur), Karnataka, India
| | - Raghavendra V. Kulkarni
- Department of Pharmaceutics, BLDEA’s SSM College of Pharmacy and Research Centre, Vijayapur (Bijapur), Karnataka, India
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29
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Flocculation of a High-Turbidity Kaolin Suspension Using Hydrophobic Modified Quaternary Ammonium Salt Polyacrylamide. Processes (Basel) 2019. [DOI: 10.3390/pr7020108] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this work, a novel cationic polyacrylamide (PAMD) was synthesized by acrylamide (AM) diallyl dimethyl ammonium chloride (DMD) and dodecyl polyglucoside (DPL) under low-pressure ultraviolet (UV) initiation. The intrinsic viscosity and cationic degree of PAMD were optimized in copolymerization. The optimum synthesis conditions that affect polymerization were determined to be solid content 30%, DPL content 25%, DMD content 30%, illumination time 135 min, and pH 9. The flocculation performance of flocculant PAMD with a high cationic degree was investigated in the purification of high-turbidity water. The flocculation mechanism was correspondingly studied and summarized based on Fourier transform-infrared (FTIR) analysis. Finally, the results of an experimental simulation using the response surface method show that 98.9% supernatant transmittance was achieved under dosage 4 mg/L, fast stirring time 20 min, pH 7, and stirring speed 320 rpm.
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30
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Birajdar RP, Patil SS, Alange VV, Kulkarni RV. Electrically Triggered Transdermal Drug Delivery Utilizing Poly(Acrylamide)-graft-Guar Gum: Synthesis, Characterization and Formulation Development. ACTA ACUST UNITED AC 2019. [DOI: 10.2174/2452271602666181031093243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Objective:
The study aimed to prepare electrically-triggered transdermal drug delivery
systems (ETDS) using electrically responsive polyacrylamide-graft-gaur gum (PAAm-g-GaG) copolymer.
Methods:
The PAAm-g-GaG copolymer was synthesized by adopting free radical polymerization
grafting method. This PAAm-g-GaG copolymer hydrogel acts as a drug reservoir and blend films of
Guar Gum (GaG) and Polyvinyl Alcohol (PVA) were included as Rate Controlling Membranes
(RCM) in the system. The PAAm-g-GaG copolymer was characterized by FTIR, neutralization
equivalent values, thermogravimetric analysis and elemental analysis.
Results:
On the basis of results obtained, it is implicit that the drug permeation decreased with an increase
in the concentration of glutaraldehyde and RCM thickness; while drug permeation rate was
increased with increasing applied electric current strength from 2 to 8 mA. A two fold increase in
flux values was observed with the application of DC electric current. An increase in drug permeation
was witnessed under on condition of electric stimulus and permeation was decreased when electric
stimulus was "off". The skin histopathology study confirmed the changes in skin structure when
electrical stimulus was applied.
Conclusion:
The electrically-sensitive PAAm-g-GaG copolymer is a useful biomaterial for transdermal
drug delivery application.
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Affiliation(s)
- Ravindra P. Birajdar
- Department of Pharmaceutics, BLDEA's SSM College of Pharmacy and Research Centre, BLDE University Campus, Vijayapur 586 103, Karnataka, India
| | - Sudha S. Patil
- Department of Pharmaceutics, BLDEA's SSM College of Pharmacy and Research Centre, BLDE University Campus, Vijayapur 586 103, Karnataka, India
| | - Vijaykumar V. Alange
- Department of Pharmaceutics, BLDEA's SSM College of Pharmacy and Research Centre, BLDE University Campus, Vijayapur 586 103, Karnataka, India
| | - Raghavendra V. Kulkarni
- Department of Pharmaceutics, BLDEA's SSM College of Pharmacy and Research Centre, BLDE University Campus, Vijayapur 586 103, Karnataka, India
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