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Kumari A, Singh B. Functionalization of sterculia gum for making platform hydrogels via network formation for use in drug delivery. Int J Biol Macromol 2024; 264:130814. [PMID: 38479664 DOI: 10.1016/j.ijbiomac.2024.130814] [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: 12/20/2023] [Revised: 03/09/2024] [Accepted: 03/10/2024] [Indexed: 03/17/2024]
Abstract
Recently, various advancements have been made in the development of functional polymeric materials for innovative applications. Herein this work, functionalization of sterculia gum (SG) was carried out via grafting of poly(2-(methacryloyloxy) ethyltrimethylammonium chloride) (METAC)-polyvinyl pyrrolidone (PVP) to develop hydrogel dressings as a platform for use in drug delivery (DD). The innovation of the present work is the exploration of inherent antioxidant and antimicrobial properties of the SG along with antimicrobial characteristic of poly(METAC) and PVP, to design the doxycycline encapsulated hydrogel dressings for better wound healing. FESEM, EDS and AFM analyzed the surface morphology of hydrogels. FTIR, 13C NMR and XRD inferred inclusion of poly(METAC)-PVP into polymers. 13C NMR confirmed the incorporation of poly(METAC) and PVP onto gum by the presence of a peak at 54.74 ppm because of methyl carbon attached to quaternary nitrogen of poly(METAC) and at 45.48 ppm due to the ring carbon of PVP along with FTIR peak at 949 cm-1 because of CN bending of quaternary nitrogen of poy (METAC). Thermal characterization of copolymers has been performed using TGA analysis. One gram of copolymeric hydrogel dressing absorbed 6.51 ± 0.03 g simulated salivary fluid (SSF) and 7.65 ± 0.03 g simulated wound fluid (SWF). Release of doxycycline drug occurred in a sustained manner and followed the Non-Fickian diffusion mechanism from hydrogels. The release profile was most effectively described by Hixon-Crowell kinetic model. Hydrogel demonstrated biocompatibility and expressed thrombogenicity 79.7 ± 4.9 % during its polymer-blood interactions. Copolymer revealed mucoadhesive property, requiring a force of 77.00 ± 0.01 mN to detach from bio-membrane. Additionally, it exhibited antioxidant features, showing 43.81 ± 0.286 % free radical scavenging. Hydrogel dressings were mechanically stable and revealed 0.76 ± 0.09 N mm-2 tensile strength and 9.18 ± 0.01 N burst strength. Polymer films were permeable to oxygen and water vapor and were impermeable to microorganisms. Hydrogel dressings exhibited antimicrobial properties against Pseudomonas aeruginosa and Staphylococcus aureus bacteria. Overall, these properties displayed the suitability of hydrogels for wound dressing (WD) applications which may actively enhance wound healing.
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Affiliation(s)
- Ankita Kumari
- Department of Chemistry, Himachal Pradesh University, Shimla-171005, India
| | - Baljit Singh
- Department of Chemistry, Himachal Pradesh University, Shimla-171005, India.
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Martínez Gil J, Reyes RV, Bastidas-Barranco M, Giraldo L, Moreno-Piraján JC. Biodiesel Production from Transesterification with Lipase from Pseudomonas cepacia Immobilized on Modified Structured Metal Organic Materials. ACS OMEGA 2022; 7:41882-41904. [PMID: 36440125 PMCID: PMC9685751 DOI: 10.1021/acsomega.2c02873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
This research presents the modification of MOF-199 and ZIF-8 using furfuryl alcohol (FA) as a carbon source to subsequently fix lipase from Pseudomonas cepacia and use these biocatalysts in the transesterification of African palm oil (APO). The need to overcome the disadvantages of free lipases in the biodiesel production process led to the use of metal organic framework (MOF)-type supports because they provide greater thermal stability and separation of the catalytic phase, thus improving the activity and efficiency in relation to the use of free lipase, disadvantages that could not be overcome with the use of other types of catalysts used in transesterification/esterification reactions for the production of biodiesel. The modification of MOFs ZIF-8 and MOF-199 with FA increases the pore volume which allows better immobilization of Pseudomonas cepacia lipase (PCL). The results show that these biocatalysts undergo transesterification with biodiesel yields above 90%. Additionally, studies were carried out on the effect of (1) enzyme loading, 2) enzyme immobilization time, (3) enzyme immobilization temperature, and (4) pH on the % immobilization of the enzyme and the specific activity. The results show that the highest immobilization efficiency for the FA@ZIF-8 support has a value of 91.2% when the load of this support was 3.5 mg/mg and has a specific activity of 142.5 U/g protein. The FA@MOF-199 support presented 80.3% enzyme immobilization and 125% U/g specific activity protein. We established that the specific activity increases in the period from 0.5 to 5.0 h for the systems under investigation. After this time, both the specific activity and the % efficiency of enzyme immobilization decrease. Therefore, 5.0 h (immobilization efficiency of 95 and 85% for FA@MOF-199, respectively) was chosen as the most appropriate time for PCL immobilization. Methods of adding methanol, with three and four steps, were tested, where biodiesel yields greater than 90% were obtained for the biocatalysts synthesized in this work (FA@ZIF-8-PCL and FA@MOF-199-PCL) and above 70% for free PCL, and the maximum yield was reached at a molar ratio between methanol and APO of 4:1 when using the one-step method under the same reaction conditions (as mentioned above). Only the results of FA@ZIF-8-PCL are presented here; however, it should be noted that the results for biocatalyst FA@MOF-199-PCL and lipase-free PCL presented the same behavior. The order of biocatalyst performance was FA@ZIF-8-PCL > FA@MOF-199-PCL > PCL-Free, which demonstrates that the use of FA as a modifier is a novel aspect in the conversion of palm oil into biodiesel components.
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Affiliation(s)
- José
Manuel Martínez Gil
- Grupo
de Investigación Catálisis y Materiales. Facultad de
Ciencias Básicas y Aplicadas, Universidad
de La Guajira, Km 5 vía a Maicao., Riohacha440007, Colombia
- Grupo
de Investigación Química Cuántica y Teórica,
Facultad de Ciencias Exactas y Naturales, Universidad de Cartagena, Campus de Zaragocilla, Cartagena130005, Colombia
- Grupo
de Investigación Desarrollo de Estudios y Tecnologías
Ambientales del Carbono (DESTACAR). Facultad de Ingenierías, Universidad de La Guajira, Km 5 vía a Maicao., Riohacha440007, Colombia
- Facultad
de Ciencias, Departamento de Química, Grupo de Investigación
en Sólidos Porosos y Calorimetría, Universidad de los Andes, Bogotá01, Colombia
| | - Ricardo Vivas Reyes
- Grupo
de Investigación Química Cuántica y Teórica,
Facultad de Ciencias Exactas y Naturales, Universidad de Cartagena, Campus de Zaragocilla, Cartagena130005, Colombia
| | - Marlon Bastidas-Barranco
- Grupo
de Investigación Desarrollo de Estudios y Tecnologías
Ambientales del Carbono (DESTACAR). Facultad de Ingenierías, Universidad de La Guajira, Km 5 vía a Maicao., Riohacha440007, Colombia
| | - Liliana Giraldo
- Facultad
de Ciencias, Departamento de Química, Grupo de Calorimetría, Universidad Nacional de Colombia, Sede Bogotá01, Colombia
| | - Juan Carlos Moreno-Piraján
- Facultad
de Ciencias, Departamento de Química, Grupo de Investigación
en Sólidos Porosos y Calorimetría, Universidad de los Andes, Bogotá01, Colombia
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Ghobashy MM, Elbarbary AM, Hegazy DE, Maziad NA. Radiation synthesis of pH-sensitive 2-(dimethylamino)ethyl methacrylate/ polyethylene oxide/ZnS nanocomposite hydrogel membrane for wound dressing application. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103399] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Aslam M, Barkat K, Malik NS, Alqahtani MS, Anjum I, Khalid I, Tulain UR, Gohar N, Zafar H, Paiva-Santos AC, Raza F. pH Sensitive Pluronic Acid/Agarose-Hydrogels as Controlled Drug Delivery Carriers: Design, Characterization and Toxicity Evaluation. Pharmaceutics 2022; 14:1218. [PMID: 35745795 PMCID: PMC9229590 DOI: 10.3390/pharmaceutics14061218] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/03/2022] [Accepted: 06/06/2022] [Indexed: 02/06/2023] Open
Abstract
The objective of this study was to fabricate and evaluate a pH sensitive cross-linked polymeric network through the free radical polymerization technique for the model drug, cyclophosphamide, used in the treatment of non-Hodgkin's lymphoma. The Hydrogels were prepared using a polymeric blend of agarose, Pluronic acid, glutaraldehyde, and methacrylic acid. The prepared hydrogels were characterized for drug loading (%), swelling pattern, release behavior, the ingredient's compatibility, structural evaluation, thermal integrity, and toxicity evaluation in rabbits. The new polymer formation was evident from FTIR findings. The percentage loaded into the hydrogels was in the range of 58.65-75.32%. The developed hydrogels showed significant differences in swelling dynamics and drug release behavior in simulated intestinal fluid (SIF) when compared with simulated gastric fluid (SGF). The drug release was persistent and performed in a controlled manner for up to 24 h. A toxicity study was conducted on white albino rabbits. The developed hydrogels did not show any signs of ocular, skin, or oral toxicity; therefore, these hydrogels can be regarded as safe and potential carriers for controlled drug delivery in biomedical applications.
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Affiliation(s)
- Mariam Aslam
- Faculty of Pharmacy, The University of Lahore, Lahore 54000, Pakistan; (M.A.); (I.A.)
| | - Kashif Barkat
- Faculty of Pharmacy, The University of Lahore, Lahore 54000, Pakistan; (M.A.); (I.A.)
| | - Nadia Shamshad Malik
- Faculty of Pharmacy, Capital University of Science and Technology (CUST), Islamabad 44000, Pakistan; (N.S.M.); (N.G.)
| | - Mohammed S. Alqahtani
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Irfan Anjum
- Faculty of Pharmacy, The University of Lahore, Lahore 54000, Pakistan; (M.A.); (I.A.)
| | - Ikrima Khalid
- Faculty of Pharmaceutical Sciences, GC University, Faisalabad 38000, Pakistan;
| | - Ume Ruqia Tulain
- Faculty of Pharmacy, University of Sargodha, Sargodha 40100, Pakistan;
| | - Nitasha Gohar
- Faculty of Pharmacy, Capital University of Science and Technology (CUST), Islamabad 44000, Pakistan; (N.S.M.); (N.G.)
| | - Hajra Zafar
- School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan, Road, Shanghai 200240, China;
| | - Ana Cláudia Paiva-Santos
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal;
- REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Faisal Raza
- Faculty of Pharmacy, Capital University of Science and Technology (CUST), Islamabad 44000, Pakistan; (N.S.M.); (N.G.)
- School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan, Road, Shanghai 200240, China;
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Lori MS, Ohadi M, Estabragh MAR, Afsharipour S, Banat IM, Dehghannoudeh G. pH-sensitive polymer-based carriers as a useful approach for oral delivery of therapeutic protein: A review. Protein Pept Lett 2021; 28:1230-1237. [PMID: 34303327 DOI: 10.2174/0929866528666210720142841] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/12/2021] [Accepted: 04/20/2021] [Indexed: 11/22/2022]
Abstract
There are many proteins and enzymes in the human body, and their dysfunction can lead to disease. The use of proteins as a drug is common in various diseases such as diabetes. Proteins are hydrophilic molecules whose spatial structure is critical to their correct function. There are different ways to the administration of proteins. Protein structures are degraded by gastric acid and enzymes in the gastrointestinal tract and have a slight ability to permeation from the gastrointestinal epithelium due to their large hydrophilic nature. Therefore, their oral use has limitations. Since the oral use of drugs is one of the best and easiest routes for patients, many studies have been done to increase the stability, penetration and ultimately increase the bioavailability of proteins through oral administration. One of the studied strategies for oral delivery of protein is the use of pH-sensitive polymer-based carriers. These carriers use different pH-sensitive polymers such as eudragit®, chitosan, dextran, and alginate. The use of pH-sensitive polymer-based carriers by protecting the protein from stomach acid (low pH) and degrading enzymes, increasing permeability, and maintaining the spatial structure of the protein leads to increased bioavailability. In this review, we focus on the various polymers used to prepare pH-sensitive polymer-based carriers for the oral delivery of proteins.
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Affiliation(s)
- Maryam Shamseddini Lori
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Mandana Ohadi
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Sepehr Afsharipour
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Ibrahim M Banat
- School of Biomedical Sciences, Faculty of Life & Health Sciences, University of Ulster, Coleraine BT52 1SA, Northern Ireland, United Kingdom
| | - Gholamreza Dehghannoudeh
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
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Li K, Fan Y, He Y, Zeng L, Han X, Yan Y. Burkholderia cepacia lipase immobilized on heterofunctional magnetic nanoparticles and its application in biodiesel synthesis. Sci Rep 2017; 7:16473. [PMID: 29184106 PMCID: PMC5705719 DOI: 10.1038/s41598-017-16626-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 11/15/2017] [Indexed: 11/09/2022] Open
Abstract
Biodiesel production using immobilized lipase as a biocatalyst is a promising process. The performance of immobilized lipase is mainly determined by supporting materials and immobilization method. To avoid the shortcomings of adsorption and covalent bonding methods, in this study, we developed a novel heterofunctional carrier of being strengthened anion exchange and weakened covalent binding to avoid activity loss and improve operational stability of the immobilized lipase. 2,3-epoxypropyltrimethylammonium chloride with epoxy and quaternary ammonium group and glutaraldehyde were grafted onto aminated magnetic nanoparticles (AMNPs) to generate a new matrix, named GEAMNP. Then Burkholderia cepacia lipase (BCL) was immobilized on GEAMNP via anion exchange and covalent bonding. The transesterification between soybean oil and methanol was used to test the activities. Activity recovery of the immobilized BCL was up to 147.4% and the corresponding transesterification activity was 1.5-fold than that of BCL powder. The immobilized lipase was further used for biodiesel production to confirm its feasibility. The fatty acid methyl esters conversion yield could reach 96.8% in the first 12 h. Furthermore, the immobilized lipase, BCL-GEAMNP showed markedly improved operational stability, better reusability and higher esters than BCL-GAMNP, where MNPs were only modified with (3-aminopropyl) triethoxysilane and glutaraldehyde.
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Affiliation(s)
- Kai Li
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yanli Fan
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yaojia He
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Leping Zeng
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaotao Han
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China
| | - Yunjun Yan
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China.
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Hibbins AR, Kumar P, Choonara YE, Kondiah PPD, Marimuthu T, Du Toit LC, Pillay V. Design of a Versatile pH-Responsive Hydrogel for Potential Oral Delivery of Gastric-Sensitive Bioactives. Polymers (Basel) 2017; 9:polym9100474. [PMID: 30965777 PMCID: PMC6418787 DOI: 10.3390/polym9100474] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/25/2017] [Accepted: 09/25/2017] [Indexed: 11/30/2022] Open
Abstract
A pH-responsive hydrogel system was prepared by free radical polymerization of acrylamide and methyl acrylic acid in the presence of N-N′-methylene bisacrylamide. Sodium bicarbonate was further applied as a blowing agent, which afforded a porous hydrogel structure. The hydrogel system achieved a constant super swelling rate within simulated intestinal buffer (~4%/min) and remained relatively static within simulated gastric buffer (~0.8%/min). The hydrogel system was able to achieve matrix resilience greater than 30% under a relatively high strain of 40%. In addition, the hydrogel system demonstrated significant swelling properties in response to simulated intestinal environmental over 24 h, with contrasting characteristics in simulated gastric buffer. The hydrogel demonstrated type IV isotherm porosity characteristics, with remarkable MRI and SEM variations in gastric and intestinal simulated fluids. Drug loading was observed to be greater than 98% using theophylline as a prototype drug, evaluating its controlled release kinetics over 24 h. The hydrogel exhibited substantial pH-responsive activity, which could be used as a versatile platform for targeted release of gastric-sensitive therapeutics to the small intestine.
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Affiliation(s)
- Angus R Hibbins
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Yahya E Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Pierre P D Kondiah
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Thashree Marimuthu
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Lisa C Du Toit
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
| | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
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Shakeel A, Singh A, Das S, Suhag D, Sharma AK, Rajput SK, Mukherjee M. Synthesis and morphological insight of new biocompatible smart hydrogels. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1267-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fathi M, Barar J. Perspective highlights on biodegradable polymeric nanosystems for targeted therapy of solid tumors. ACTA ACUST UNITED AC 2017; 7:49-57. [PMID: 28546953 PMCID: PMC5439389 DOI: 10.15171/bi.2017.07] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 02/06/2017] [Indexed: 12/18/2022]
Abstract
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Introduction: Polymeric nanoparticles (NPs) formulated using biodegradable polymers offer great potential for development of de novo drug delivery systems (DDSs) capable of delivering a wide range of bioactive agents. They can be engineered as advanced multifunctional nanosystems (NSs) for simultaneous imaging and therapy known as theranostics or diapeutics.
Methods: A brief prospective is provided on biomedical importance and applications of biodegradable polymeric NSs through reviewing the recently published literature.
Results: Biodegradable polymeric NPs present unique characteristics, including: nanoscaled structures, high encapsulation capacity, biocompatibility with non-thrombogenic and non-immunogenic properties, and controlled-/sustained-release profile for lipophilic and hydrophilic drugs. Once administered in vivo, all classes of biodegradable polymers (i.e., synthetic, semi-synthetic, and natural polymers) are subjected to enzymatic degradation; and hence, transformation into byproducts that can be simply eliminated from the human body. Natural and semi-synthetic polymers have been shown to be highly stable, much safer, and offer a non-/less-toxic means for specific delivery of cargo drugs in comparison with synthetic polymers. Despite being biocompatible and enzymatically-degradable, there are some drawbacks associated with these polymers such as batch to batch variation, high production cost, structural complexity, lower bioadhesive potential, uncontrolled rate of hydration, and possibility of microbial spoilage. These pitfalls have bolded the importance of synthetic counterparts despite their somewhat toxicity.
Conclusion: Taken all, to minimize the inadvertent effects of these polymers and to engineer much safer NSs, it is necessary to devise biopolymers with desirable chemical and biochemical modification(s) and polyelectrolyte complex formation to improve their drug delivery capacity in vivo.
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Affiliation(s)
- Marziyeh Fathi
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jaleh Barar
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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A rapid, non-invasive and non-destructive method for studying swelling behavior and microstructure variations of hydrogels. Carbohydr Polym 2016; 151:1251-1260. [DOI: 10.1016/j.carbpol.2016.06.054] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 06/13/2016] [Accepted: 06/14/2016] [Indexed: 11/17/2022]
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Karimi M, Eslami M, Sahandi-Zangabad P, Mirab F, Farajisafiloo N, Shafaei Z, Ghosh D, Bozorgomid M, Dashkhaneh F, Hamblin MR. pH-Sensitive stimulus-responsive nanocarriers for targeted delivery of therapeutic agents. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2016; 8:696-716. [PMID: 26762467 PMCID: PMC4945487 DOI: 10.1002/wnan.1389] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 10/27/2015] [Accepted: 12/09/2015] [Indexed: 12/21/2022]
Abstract
In recent years miscellaneous smart micro/nanosystems that respond to various exogenous/endogenous stimuli including temperature, magnetic/electric field, mechanical force, ultrasound/light irradiation, redox potentials, and biomolecule concentration have been developed for targeted delivery and release of encapsulated therapeutic agents such as drugs, genes, proteins, and metal ions specifically at their required site of action. Owing to physiological differences between malignant and normal cells, or between tumors and normal tissues, pH-sensitive nanosystems represent promising smart delivery vehicles for transport and delivery of anticancer agents. Furthermore, pH-sensitive systems possess applications in delivery of metal ions and biomolecules such as proteins, insulin, etc., as well as co-delivery of cargos, dual pH-sensitive nanocarriers, dual/multi stimuli-responsive nanosystems, and even in the search for new solutions for therapy of diseases such as Alzheimer's. In order to design an optimized system, it is necessary to understand the various pH-responsive micro/nanoparticles and the different mechanisms of pH-sensitive drug release. This should be accompanied by an assessment of the theoretical and practical challenges in the design and use of these carriers. WIREs Nanomed Nanobiotechnol 2016, 8:696-716. doi: 10.1002/wnan.1389 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Mahdi Karimi
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Masoud Eslami
- Polymeric Materials Research Group, Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Parham Sahandi-Zangabad
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Fereshteh Mirab
- Polymeric Materials Research Group, Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Negar Farajisafiloo
- Polymeric Materials Research Group, Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Zahra Shafaei
- Department of Cell & Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Deepanjan Ghosh
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran university of Medical science, Tehran, Iran
| | - Mahnaz Bozorgomid
- Department of Applied Chemistry, Central Branch of Islamic Azad University of Tehran, Tehran, Iran
| | - Fariba Dashkhaneh
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran university of Medical Science, Tehran, Iran
| | - Michael R. Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Dermatology, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA
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Gumel AM, Razaif-Mazinah MRM, Anis SNS, Annuar MSM. Poly (3-hydroxyalkanoates)-co-(6-hydroxyhexanoate) hydrogel promotes angiogenesis and collagen deposition during cutaneous wound healing in rats. ACTA ACUST UNITED AC 2015; 10:045001. [PMID: 26154416 DOI: 10.1088/1748-6041/10/4/045001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Wound management and healing in several physiological or pathological conditions, particularly when comorbidities are involved, usually proves to be difficult. This presents complications leading to socio-economic and public health burdens. The accelerative wound healing potential of biocompatible poly(3-hydroxyalkanoates)-co-(6-hydroxyhexanoate) (PHA-PCL) composite hydrogel is reported herein. The biosynthesized PHA-PCL macromer was cross-linked with PEGMA to give a hydrogel. Twenty-four rats weighing 200-250 g each were randomly assigned to four groups of six rats. Rats in group I (negative control) were dressed with sterilized gum acacia paste in 10% normal saline while PEGMA-alone hydrogel (PH) was used to dress group II (secondary control) rats. Group III rats were dressed with PHAs-PCL cross-linked PEGMA hydrogel (PPH). For the positive control (group IV), the rats were dressed with Intrasite(®) gel. Biochemical, histomorphometric and immunohistomorphometric analyses revealed a significant difference in area closure and re-epithelialization on days 7 and 14 in PPH or Intrasite(®) gel groups compared to gum acacia or PEGMA-alone groups. Furthermore, wounds dressed with PPH or Intrasite(®) gel showed evident collagen deposition, enhanced fibrosis and extensively organized angiogenesis on day 14 compared to the negative control group. While improvement in wound healing of the PH dressed group could be observed, there was no significant difference between the negative control group and the PH dressed group in any of the tests. The findings suggested that topical application of PPH accelerated the rats' wound healing process by improving angiogenesis attributed to the increased microvessel density (MVD) and expressions of VEGF-A in tissue samples. Thus, PPH has been demonstrated to be effective in the treatment of cutaneous wounds in rats, and could be a potential novel agent in the management and acceleration of wound healing in humans and animals.
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Affiliation(s)
- Ahmad Mohammed Gumel
- Institute of Biological Sciences, Faculty of Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Recent progress in biomedical applications of Pluronic (PF127): Pharmaceutical perspectives. J Control Release 2015; 209:120-38. [PMID: 25921088 DOI: 10.1016/j.jconrel.2015.04.032] [Citation(s) in RCA: 234] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 10/23/2022]
Abstract
Most of the administered anti-cancer drugs are hydrophobic in nature and are known to have poor water solubility, short residence time, rapid clearance from the body and systemic side effects. Polymeric-based targeted particulate carrier system has shown to directly deliver the encapsulated anti-cancer drug to the desired site of action and prevent the interaction of encapsulated drug with the normal cells. Pluronic F127 (PF127) has been widely investigated for its broad-range of therodiagnostic applications in biomedical and pharmaceutical sciences, but rapid dissolution in the physiological fluids, short residence time, rapid clearance, and weak mechanical strength are the main shortcomings that are associated with PF127 and have recently been overcome by making various modifications in the structure of PF127 notably through preparation of PF127-based mixed polymeric micelles, PF127-conjugated nanoparticles and PF127-based hydrophobically modified thermogels. In this article, we have briefly discussed the recent studies that have been conducted on various anti-cancer drugs using PF127 as nano-carrier modified with other copolymers and/or conjugated with magnetic nanoparticles. The key findings of these studies demonstrated that the modified form of PF127 can significantly increase the stability of incorporated hydrophobic drugs with enhanced in vitro cytotoxicity and cellular uptake of anti-cancer drugs. Moreover, the modified form of PF127 has also shown its therapeutic potentials as therodiagnostics in various types of tumors and cancers. Hence, it can be concluded that the modified form of PF127 exhibits significant therodiagnostic effects with increased tumor-specific delivery of anti-cancer drugs having minimal toxic effects as compared to PF127 alone and/or other copolymers.
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Dong K, Dong Y, You C, Xu W, Huang X, Yan Y, Zhang L, Wang K, Xing J. Assessment of the safety, targeting, and distribution characteristics of a novel pH-sensitive hydrogel. Colloids Surf B Biointerfaces 2014; 123:965-73. [DOI: 10.1016/j.colsurfb.2014.10.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 10/21/2014] [Accepted: 10/25/2014] [Indexed: 11/15/2022]
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Kjøniksen AL, Calejo MT, Zhu K, Nyström B, Sande SA. Stabilization of Pluronic Gels by Hydrophobically Modified Hydroxyethylcellulose. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2014.886245] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hydroxypropyl-β-cyclodextrin grafted polyethyleneimine used as transdermal penetration enhancer of diclofenac sodium. Int J Pharm 2014; 474:182-92. [DOI: 10.1016/j.ijpharm.2014.08.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 07/29/2014] [Accepted: 08/14/2014] [Indexed: 11/23/2022]
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Sagiri SS, Kumar U, Champaty B, Singh VK, Pal K. Thermal, electrical, and mechanical properties of tween 80/span 80-based organogels and its application in iontophoretic drug delivery. J Appl Polym Sci 2014. [DOI: 10.1002/app.41419] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sai S. Sagiri
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela- 769008 Odisha India
| | - Uttam Kumar
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela- 769008 Odisha India
| | - Biswajeet Champaty
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela- 769008 Odisha India
| | - Vinay K Singh
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela- 769008 Odisha India
| | - Kunal Pal
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela- 769008 Odisha India
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Gumel AM, Annuar MSM. Poly-3-hydroxyalkanoates-co-polyethylene glycol methacrylatecopolymers for pH responsive and shape memory hydrogel. J Appl Polym Sci 2014. [DOI: 10.1002/app.41149] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ahmad Mohammed Gumel
- Faculty of Science, Institute of Biological Sciences; University of Malaya; Kuala Lumpur 50603 Malaysia
| | - Mohamad Suffian Mohamad Annuar
- Faculty of Science, Institute of Biological Sciences; University of Malaya; Kuala Lumpur 50603 Malaysia
- Centre for Research in Biotechnology for Agriculture (CEBAR); University of Malaya; Kuala Lumpur 50603 Malaysia
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Wang K, Yan Y, Zhao G, Xu W, Dong K, You C, Zhang L, Xing J. In vitro and in vivo application of hydroxypropyl-β-cyclodextrin-grafted polyethyleneimine used as a transdermal penetration enhancer. Polym Chem 2014. [DOI: 10.1039/c4py00286e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dong K, Dong Y, You C, Xu W, Huang X, Yan Y, Zhang L, Wang K, Xing J. Assessment of the drug loading, in vitro and in vivo release behavior of novel pH-sensitive hydrogel. Drug Deliv 2014; 23:174-84. [PMID: 24806351 DOI: 10.3109/10717544.2014.908329] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT As a glucocorticoid drug, dexamethasone has good therapeutic effects for ulcerative colitis. pH-sensitive hydrogels could make conventional changes of volume in response with different pH values. Meanwhile, they could load drugs depending on its internal three-dimensional network structure. OBJECTIVE Appropriate methods were used to improve the drug-loading capacity of hydrogel and exploring the colon-targeting character of dexamethasone hydrogel. MATERIALS AND METHODS Different solvents (ethanol and 1,2-propanediol) were employed to dissolve dexamethasone as well as hydrogel monomer materials (poly(ethylene glycol) methyl ether (MPEG)-poly(lactide acid)-acryloyl chloride macromonomer, itaconic acid (IA) and MPEG-methacrylate), then mixing them together to prepare hydrogel through the heat-initiated free radical polymerization method. Differential scanning calorimetry and X-ray diffraction methods were used to verify whether dexamethasone was loaded into hydrogels. In vitro drug release behavior and in vivo pharmacokinetic study were also investigated in detail. RESULTS Dexamethasone was successfully loaded into hydrogel, and its loading capacity was improved (5 mg/g). Both the in vitro release study and the in vivo pharmacokinetic study showed the good colon-targeting character of the pH-sensitive P(LE-IA-MEG) hydrogel (T max = 1.0 h, C max = 2.16 µg/ml of dexamethasone; T max = 3.9 h, C max = 0.43 µg/ml of dexamethasone hydrogel). DISCUSSION Dexamethasone could be targeted to the colon site by P(LE-IA-MEG) hydrogel, thereby improving its therapeutic effect and reduce its side effects. CONCLUSION P(LE-IA-MEG) hydrogel might have great potential application in colon-targeted drug delivery systems.
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Affiliation(s)
- Kai Dong
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Yalin Dong
- b Depertment of Pharmacy, The first Affiliated Hospital of Medical College , Xi'an Jiaotong University , Xi'an , Shaanxi , China
| | - Cuiyu You
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Wei Xu
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Xiaoyan Huang
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Yan Yan
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Lu Zhang
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Ke Wang
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Jianfeng Xing
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
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LI WEIFENG, WANG XIAOPENG, WANG KE, CHEN TIANNING, CHEN XIA, NIU XIAOFENG. A Novel of Biodegradable Implants Based on PLGA for Control Delivery of Cisplatin. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2013.853665] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kjøniksen AL, Calejo MT, Zhu K, Nyström B, Sande SA. Stabilization of pluronic gels in the presence of different polysaccharides. J Appl Polym Sci 2014. [DOI: 10.1002/app.40465] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anna-Lena Kjøniksen
- Department of Pharmacy; School of Pharmacy; University of Oslo; Blindern N-0316 Oslo Norway
- Faculty of Engineering; Østfold University College; P.O. Box 700, N-1757 Halden Norway
| | - Maria Teresa Calejo
- Department of Pharmacy; School of Pharmacy; University of Oslo; Blindern N-0316 Oslo Norway
- Department of Electronics and Communications Engineering; Tampere University of Technology; FI-33101 Tampere Finland
| | - Kaizheng Zhu
- Department of Chemistry; University of Oslo; Blindern N-0315 Oslo Norway
| | - Bo Nyström
- Department of Chemistry; University of Oslo; Blindern N-0315 Oslo Norway
| | - Sverre Arne Sande
- Department of Pharmacy; School of Pharmacy; University of Oslo; Blindern N-0316 Oslo Norway
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Dong K, Xu W, You CY, Xing JF, Zhang YJ, Gao Y, Wang K. Novel Biodegradable pH/Thermosensitive Hydrogels: Part 1. Preparation and Characterization. INT J POLYM MATER PO 2013. [DOI: 10.1080/00914037.2013.769233] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Elizalde-Peña EA, Zarate-Triviño DG, Nuño-Donlucas SM, Medina-Torres L, Gough JE, Sanchez IC, Villaseñor F, Luna-Barcenas G. Synthesis and characterization of a hybrid (chitosan-g-glycidyl methacrylate)-xanthan hydrogel. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1426-42. [PMID: 23829456 DOI: 10.1080/09205063.2013.763526] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
This work reports the synthesis and characterization of a new material obtained by mixing the hybrid natural-synthetic chitosan-g-glycidyl methacrylate (CTS-g-GMA) biopolymer and xanthan gum (X). All materials were characterized by infrared spectroscopy (FTIR), X-ray diffraction, and thermal analysis (DSC and TGA) and the results were contrasted with those of the precursor materials. The swelling index of the hydrogels decreases when the GMA mass percentage increases. The X-ray diffraction patterns show that the hybrid hydrogels are amorphous in contrast to chitosan (CTS), which is semi-crystalline. FTIR analysis confirms the existence of physical interactions among constituents. Rheological properties, η, G', and G", were determined as a function of flow allowing one to conclude that (CTS-g-GMA)-X behaves as physical hydrogel. Additionally, we report viability of fibroblasts when cultured onto the synthesized hydrogels. This study shows that these hydrogels support cell viability and have potential for use in biomedical engineering applications.
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Affiliation(s)
- E A Elizalde-Peña
- CINVESTAV, Unidad Querétaro, Libramiento Norponiente No. 2000, Frac. Real de Juriquilla, Querétaro, Qro. 76230, Mexico
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Wang K, Li WF, Xing JF, Dong K, Gao Y. Preliminary assessment of the safety evaluation of novel pH-sensitive hydrogel. Eur J Pharm Biopharm 2012; 82:332-9. [DOI: 10.1016/j.ejpb.2012.07.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 07/17/2012] [Accepted: 07/23/2012] [Indexed: 11/29/2022]
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Nguyen VN, Huang N, Grossiord JL, Moine L, Agnely F, Vauthier C. Rheological characterization of mechanical properties of chemically crosslinked microspheres. J Appl Polym Sci 2012. [DOI: 10.1002/app.38510] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Peng J, Qi T, Liao J, Fan M, Luo F, Li H, Qian Z. Synthesis and characterization of novel dual-responsive nanogels and their application as drug delivery systems. NANOSCALE 2012; 4:2694-704. [PMID: 22426443 DOI: 10.1039/c2nr30147d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this study, a temperature/pH dual-response nanogel based on NIPAm, MAA, and PEGMA was synthesized via emulsion polymerization and characterized by (1)H-NMR, FT-IR, TEM and DLS. By introducing a novel initiator, through which PEG-AIBN-PEG was synthesized, it was revealed that the PEG segments from PEG-AIBN-PEG with a dosage of initiator had a significant influence over the macro-state and stability of the nanogels. In order to optimize the feeding prescription for better application as a drug delivery system, the effect of the co-monomer contents on the response to stimuli (temperature and pH value) and cytotoxicity of the nanogels has been studied in detail. The results demonstrated that the responsiveness, reversibility and volume phase transition critical value of the nanogels could be controlled by adjusting the feeding ratio of the co-monomers in the synthesis process. MTT assay results revealed that nanogels with appropriate compositions showed good biocompatibility and relatively low toxicity. Most importantly, by studying the drug loading behavior, it was found that the dimensions of the drug molecules had a considerable influence on the drug loading efficiency and loading capacity of the nanogels, and that the mechanism by which drug molecule sizes influence the drug loading behavior of nanogels needs further investigation. The results indicated that such PNMP nanogels might have potential applications in drug delivery and other medical applications, but that the drug loading mechanism must be further developed.
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Affiliation(s)
- Jinrong Peng
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, 610041, PR China
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Detailed characterization of an injectable hyaluronic acid-polyaspartylhydrazide hydrogel for protein delivery. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.02.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Yin R, Wang K, Han J, Nie J. Photo-crosslinked glucose-sensitive hydrogels based on methacrylate modified dextran–concanavalin A and PEG dimethacrylate. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.04.075] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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