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Boldrini DE. Starch-based materials for drug delivery in the gastrointestinal tract-A review. Carbohydr Polym 2023; 320:121258. [PMID: 37659802 DOI: 10.1016/j.carbpol.2023.121258] [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: 05/08/2023] [Revised: 07/15/2023] [Accepted: 08/02/2023] [Indexed: 09/04/2023]
Abstract
Starch is a natural copolymer with unique physicochemical characteristics. Historically, it has been physically, chemically, or enzymatically modified to obtain ad-hoc functional properties for its use in different applications. In this context, the use of starch-based materials in drug delivery systems (DDSs) has gained great attention mainly because it is cheap, biodegradable, biocompatible, and renewable. This paper reviews the state of the art in starch-based materials design for their use in drug-controlled release with internal stimulus responsiveness; i.e., pH, temperature, colonic microbiota, or enzymes; specifically, those orally administered for its release in the gastrointestinal tract (GIT). Physical-chemical principles in the design of these materials taking into account their response to a particular stimulus are discussed. The relationship between the type of DDSs structure, starch modification routes, and the corresponding drug release profiles are systematically analyzed. Furthermore, the challenges and prospects of starch-based materials for their use in stimulus-responsive DDSs are also debated.
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Affiliation(s)
- Diego E Boldrini
- Planta Piloto de Ingeniería Química (PLAPIQUI), CONICET - Universidad Nacional del Sur (UNS), Camino La Carrindanga km 7, 8000 Bahía Blanca, Argentina; Departamento de Ingeniería Química, UNS, Avenida Alem 1253, 8000 Bahía Blanca, Argentina.
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2
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Adebayo AS, Agbaje K, Adesina SK, Olajubutu O. Colorectal Cancer: Disease Process, Current Treatment Options, and Future Perspectives. Pharmaceutics 2023; 15:2620. [PMID: 38004598 PMCID: PMC10674471 DOI: 10.3390/pharmaceutics15112620] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/28/2023] [Accepted: 11/02/2023] [Indexed: 11/26/2023] Open
Abstract
Colorectal cancer (CRC) is one of the deadliest malignancies in the US, ranking fourth after lung, prostate, and breast cancers, respectively, in general populations. It continues to be a menace, and the incidence has been projected to more than double by 2035, especially in underdeveloped countries. This review seeks to provide some insights into the disease progression, currently available treatment options and their challenges, and future perspectives. Searches were conducted in the PubMed search engine in the university's online library. The keywords were "Colorectal Cancer" AND "disease process" OR "disease mechanisms" OR "Current Treatment" OR "Prospects". Selection criteria were original articles published primarily during the period of 2013 through 2023. Abstracts, books and documents, and reviews/systematic reviews were filtered out. Of over 490 thousand articles returned, only about 800 met preliminary selection criteria, 200 were reviewed in detail, but 191 met final selection criteria. Fifty-one other articles were used due to cross-referencing. Although recently considered a disease of lifestyle, CRC incidence appears to be rising in countries with low, low-medium, and medium social demographic indices. CRC can affect all parts of the colon and rectum but is more fatal with poor disease outcomes when it is right-sided. The disease progression usually takes between 7-10 years and can be asymptomatic, making early detection and diagnosis difficult. The CRC tumor microenvironment is made up of different types of cells interacting with each other to promote the growth and proliferation of the tumor cells. Significant advancement has been made in the treatment of colorectal cancer. Notable approaches include surgery, chemotherapy, radiation therapy, and cryotherapy. Chemotherapy, including 5-fluorouracil, irinotecan, oxaliplatin, and leucovorin, plays a significant role in the management of CRC that has been diagnosed at advanced stages. Two classes of monoclonal antibody therapies have been approved by the FDA for the treatment of colorectal cancer: the vascular endothelial growth factor (VEGF) inhibitor, e.g., bevacizumab (Avastin®), and the epidermal growth factor receptor (EGFR) inhibitor, e.g., cetuximab (Erbitux®) and panitumumab (Verbitix®). However, many significant problems are still being experienced with these treatments, mainly off-target effects, toxic side effects, and the associated therapeutic failures of small molecular drugs and the rapid loss of efficacy of mAb therapies. Other novel delivery strategies continue to be investigated, including ligand-based targeting of CRC cells.
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Affiliation(s)
- Amusa S. Adebayo
- College of Pharmacy, Howard University, 2400 6th St NW, Washington, DC 20059, USA; (K.A.); (S.K.A.); (O.O.)
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Suhail M, Fang CW, Chiu IH, Hung MC, Vu QL, Lin IL, Wu PC. Designing and In Vitro Characterization of pH-Sensitive Aspartic Acid-Graft-Poly(Acrylic Acid) Hydrogels as Controlled Drug Carriers. Gels 2022; 8:gels8080521. [PMID: 36005122 PMCID: PMC9407557 DOI: 10.3390/gels8080521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 01/06/2023] Open
Abstract
Acetaminophen is an odorless and white crystalline powder drug, used in the management of fever, pain, and headache. The half-life of acetaminophen is very short; thus, multiple intakes of acetaminophen are needed in a day to maintain a constant pharmacological action for an extended period of time. Certain severe adverse effects are produced due to the frequent intake of acetaminophen, especially hepatotoxicity and skin rashes. Therefore, a drug carrier system is needed which not only prolongs the release of acetaminophen, but also enhances the patient compliance. Therefore, the authors prepared novel aspartic acid-graft-poly(acrylic acid) hydrogels for the controlled release of acetaminophen. The novelty of the prepared hydrogels is based on the incorporation of pH-sensitive monomer acrylic acid with polymer aspartic acid in the presence of ethylene glycol dimethacrylate. Due to the pH-sensitive nature, the release of acetaminophen was prolonged for an extended period of time by the developed hydrogels. Hence, a series of studies was carried out for the formulated hydrogels including sol-gel fraction, FTIR, dynamic swelling, polymer volume analysis, thermal analysis, percent porosity, SEM, in vitro drug release studies, and PXRD analysis. FTIR analysis confirmed the grafting of acrylic acid onto the backbone of aspartic acid and revealed the development of hydrogels. The thermal studies revealed the high thermal stability of the fabricated hydrogels as compared to pure aspartic acid. An irregular surface with a few pores was indicated by SEM. PXRD revealed the amorphous state of the developed hydrogels and confirmed the reduction in the crystallinity of the unreacted aspartic acid by the formulated hydrogels. An increase in gel fraction was observed with the increasing concentration of aspartic acid, acrylic acid, and ethylene glycol dimethacrylate due to the availability of a high amount of free radicals. The porosity study was influenced by the various compositions of developed hydrogels. Porosity was increased due to the enhancement in the concentrations of aspartic acid and acrylic acid, whereas it decreased with the increase in ethylene glycol dimethacrylate concentration. Similarly, the pH-responsive properties of hydrogels were evaluated by dynamic swelling and in vitro drug release studies at two different pH levels (1.2 and 7.4), and a greater dynamic swelling and acetaminophen release were exhibited at pH 7.4 as compared to pH 1.2. An increase in swelling, drug loading, and drug release was seen with the increased incorporation of aspartic acid and acrylic acid, whereas a decrease was detected with the increase in the concentration of ethylene glycol dimethacrylate. Conclusively, the formulated aspartic acid-based hydrogels could be employed as a suitable nonactive pharmaceutical ingredient for the controlled delivery of acetaminophen.
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Affiliation(s)
- Muhammad Suhail
- School of Pharmacy, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
| | - Chih-Wun Fang
- Divison of Pharmacy, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 81342, Taiwan
| | - I-Hui Chiu
- School of Pharmacy, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
| | - Ming-Chia Hung
- School of Pharmacy, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
| | - Quoc Lam Vu
- Department of Clinical Pharmacy, Thai Nguyen University of Medicine and Pharmacy, 284 Luong Ngoc Quyen Str., Thai Nguyen 24000, Vietnam
| | - I-Ling Lin
- Department of Medicine Laboratory Science and Biotechnology, College of Health Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Pao-Chu Wu
- School of Pharmacy, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: ; Tel.: +886-7-3121-101
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Namazi H, Pooresmaeil M, Hasani M. Oxidized starch/CuO bio-nanocomposite hydrogels as an antibacterial and stimuli-responsive agent with potential colon-specific naproxen delivery. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1798431] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Hassan Namazi
- Research Laboratory of Dendrimers and Nanopolymers, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
- Research Center for Pharmaceutical Nanotechnology (RCPN), Tabriz University of Medical Science, Tabriz, Iran
| | - Malihe Pooresmaeil
- Research Laboratory of Dendrimers and Nanopolymers, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Mohsen Hasani
- Research Laboratory of Dendrimers and Nanopolymers, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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Augustine R, Kalva N, Kim HA, Zhang Y, Kim I. pH-Responsive Polypeptide-Based Smart Nano-Carriers for Theranostic Applications. Molecules 2019; 24:E2961. [PMID: 31443287 PMCID: PMC6719039 DOI: 10.3390/molecules24162961] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 02/07/2023] Open
Abstract
Smart nano-carriers have attained great significance in the biomedical field due to their versatile and interesting designs with different functionalities. The initial stages of the development of nanocarriers mainly focused on the guest loading efficiency, biocompatibility of the host and the circulation time. Later the requirements of less side effects with more efficacy arose by attributing targetability and stimuli-responsive characteristics to nano-carriers along with their bio- compatibility. Researchers are utilizing many stimuli-responsive polymers for the better release of the guest molecules at the targeted sites. Among these, pH-triggered release achieves increasing importance because of the pH variation in different organ and cancer cells of acidic pH. This specific feature is utilized to release the guest molecules more precisely in the targeted site by designing polymers having specific functionality with the pH dependent morphology change characteristics. In this review, we mainly concert on the pH-responsive polypeptides and some interesting nano-carrier designs for the effective theranostic applications. Also, emphasis is made on pharmaceutical application of the different nano-carriers with respect to the organ, tissue and cellular level pH environment.
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Affiliation(s)
- Rimesh Augustine
- BK 21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering, Pusan National University, Geumjeong-gu, Busan 46241, Korea
| | - Nagendra Kalva
- BK 21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering, Pusan National University, Geumjeong-gu, Busan 46241, Korea
| | - Ho An Kim
- BK 21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering, Pusan National University, Geumjeong-gu, Busan 46241, Korea
| | - Yu Zhang
- BK 21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering, Pusan National University, Geumjeong-gu, Busan 46241, Korea
| | - Il Kim
- BK 21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering, Pusan National University, Geumjeong-gu, Busan 46241, Korea.
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Olad A, Doustdar F, Gharekhani H. Starch-based semi-IPN hydrogel nanocomposite integrated with clinoptilolite: Preparation and swelling kinetic study. Carbohydr Polym 2018; 200:516-528. [PMID: 30177193 DOI: 10.1016/j.carbpol.2018.08.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 07/15/2018] [Accepted: 08/04/2018] [Indexed: 11/26/2022]
Abstract
Semi-interpenetrating polymer network (semi-IPN) of starch-graft-poly(acrylic acid-co-acrylamide)/polyvinyl alcohol/clinoptilolite (starch-g-p(AA-co-AAm)/PVA/clino) superabsorbent nanocomposite was synthesized by free-radical graft co-polymerization technique in an aqueous solution. Taguchi method was used to optimize the synthesis reaction condition based on the equilibrium swelling capacity of the hydrogels. FTIR, XRD, and SEM analyses were used to study the chemical and structural properties of the hydrogel samples. The equilibrium swelling capacity of the semi-IPN superabsorbent nanocomposite (364.82 g/g) was higher than that of neat hydrogel (286.21 g/g) and in both of them water penetration into hydrogel network occurred through non-Fickian diffusion mechanism. Incorporation of clino into the polymeric matrix not only increased the equilibrium swelling capacity of the hydrogel, but also induced a substantial enhancement in its mechanical strength. Semi-IPN superabsorbent nanocomposite showed reasonable water absorbency under different loads, good salt and pH-sensitive swelling behavior, and better water retention capability, which make it potentially useful for hygiene products.
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Affiliation(s)
- Ali Olad
- Polymer Composite Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
| | - Fatemeh Doustdar
- Polymer Composite Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Hamed Gharekhani
- Polymer Composite Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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Duan L, Wang Y, Zhang Y, Wang Z, Li Y, He P. pH/redox/thermo-stimulative nanogels with enhanced thermosensitivity via incorporation of cationic and anionic components for anticancer drug delivery. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1323215] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Lanlan Duan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, People’s Republic of China
| | - Yifeng Wang
- The State Key Laboratory of Bioreactor Engineering and Key Laboratory for Ultrafine Materials of Ministry of Education, Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Yuhong Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, People’s Republic of China
| | - Zhiguo Wang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, People’s Republic of China
| | - Yulin Li
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, People’s Republic of China
- The State Key Laboratory of Bioreactor Engineering and Key Laboratory for Ultrafine Materials of Ministry of Education, Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai, People’s Republic of China
- CQM—Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus Universitário da Penteada, Funchal, Portugal
| | - Peixin He
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, People’s Republic of China
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Apopei Loghin DF, Biliuta G, Coseri S, Dragan ES. Preparation and characterization of oxidized starch/poly( N , N -dimethylaminoethyl methacrylate) semi-IPN cryogels and in vitro controlled release evaluation of indomethacin. Int J Biol Macromol 2017; 96:589-599. [DOI: 10.1016/j.ijbiomac.2016.12.071] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/06/2016] [Accepted: 12/28/2016] [Indexed: 10/20/2022]
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Pourjamal K, Fathi M, Entezami AA, Hasanzadeh M, Shadjou N. Superabsorbent Nanohydrogels of Poly (N-Isopropyl Acrylamide-Co-Itaconic Acid) Grafted on Starch — Synthesis and Swelling Study. ACTA ACUST UNITED AC 2016. [DOI: 10.1142/s1793984416500057] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Biopolymer-based superabsorbent nanohydrogel consisting of N-isopropylacrylamide and itaconic acid (IA) was grafted on to starch backbone in an aqueous solution in the absence of the cross-linker agents. The copolymerization reaction occurred in the presence of ammonium persulfate (APS) as an initiator. The effect of N-isopropylacrylamide-to-IA ratio and different concentrations of initiator were investigated. The nanohydrogel composition was characterized by Fourier transform infrared spectroscopy (FTIR). The thermal stability was analyzed by Thermogravimetric analysis (TGA). Differential scanning calorimetry (DSC) studies were employed for determination of lower critical solution temperature in hydrogels. Dynamic light scattering analysis showed a narrow size distribution around 70–200[Formula: see text]nm for the synthesized nanohydrogels. The effects of pH on swelling behavior of the hydrogel were investigated. The obtained nanohydrogels, due to their pH and thermo dual sensitive properties, have the potential to be used in the drug delivery systems.
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Affiliation(s)
- Karim Pourjamal
- Laboratory of Polymer, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Marziyeh Fathi
- Laboratory of Polymer, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Ali Akbar Entezami
- Laboratory of Polymer, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Mohammad Hasanzadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz 51664, Iran
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 51664, Iran
| | - Nasrin Shadjou
- Department of Nanochemistry, Nano Technology Research Center, Urmia University, Urmia, Iran
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Zhang X, Pu M, He S. Theoretical studies of structure and racemization mechanism of aspartate-intercalated hydrotalcite. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-015-2407-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lim SL, Tang WNH, Ooi CW, Chan ES, Tey BT. Rapid swelling and deswelling of semi-interpenetrating network poly(acrylic acid)/poly(aspartic acid) hydrogels prepared by freezing polymerization. J Appl Polym Sci 2016. [DOI: 10.1002/app.43515] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Swee Lu Lim
- Chemical Engineering Discipline; School of Engineering, Monash University Malaysia; Jalan Lagoon Selatan, Bandar Sunway 47500 Selangor Malaysia
| | - Willie Ngee Hon Tang
- Department of Chemical and Biomolecular Engineering; University of Melbourne; Victoria 3010 Australia
| | - Chien Wei Ooi
- Chemical Engineering Discipline; School of Engineering, Monash University Malaysia; Jalan Lagoon Selatan, Bandar Sunway 47500 Selangor Malaysia
- Advanced Engineering Platform; Monash University Malaysia; Jalan Lagoon Selatan, Bandar Sunway 47500 Selangor Malaysia
| | - Eng-Seng Chan
- Chemical Engineering Discipline; School of Engineering, Monash University Malaysia; Jalan Lagoon Selatan, Bandar Sunway 47500 Selangor Malaysia
- Advanced Engineering Platform; Monash University Malaysia; Jalan Lagoon Selatan, Bandar Sunway 47500 Selangor Malaysia
| | - Beng Ti Tey
- Chemical Engineering Discipline; School of Engineering, Monash University Malaysia; Jalan Lagoon Selatan, Bandar Sunway 47500 Selangor Malaysia
- Advanced Engineering Platform; Monash University Malaysia; Jalan Lagoon Selatan, Bandar Sunway 47500 Selangor Malaysia
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Cheng W, Gu L, Ren W, Liu Y. Stimuli-responsive polymers for anti-cancer drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:600-8. [DOI: 10.1016/j.msec.2014.05.050] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 05/23/2014] [Indexed: 12/11/2022]
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Aminabhavi TM, Nadagouda MN, More UA, Joshi SD, Kulkarni VH, Noolvi MN, Kulkarni PV. Controlled release of therapeutics using interpenetrating polymeric networks. Expert Opin Drug Deliv 2014; 12:669-88. [DOI: 10.1517/17425247.2014.974871] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Vakili MR, Rahneshin N. Synthesis and characterization of novel stimuli-responsive hydrogels based on starch and L-aspartic acid. Carbohydr Polym 2013; 98:1624-30. [DOI: 10.1016/j.carbpol.2013.08.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 07/20/2013] [Accepted: 08/08/2013] [Indexed: 11/30/2022]
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Abstract
Stimuli-responsive hydrogels are extensively investigated to implement new biomedical and pharmaceutical approaches. In this work, novel pH-sensitive hydrogel, with potassium persulfate as the initiator, acrylic acid and butyl methacrylate as graft monomer, were synthesized by microwave irradiation. FT-IR measurements testified the hydrogels formed structure. The SEM micrographs revealed that the porous structures of hydrogels changed with the increasing AA content. The experimental results demonstrated that the gels do not swell greatly at low pH media whereas they swelled sufficiently at high pH media, exhibiting smart pH sensitivity.
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Synthesis and drug-release properties of biodegradable hydrogels having β-cyclodextrin. Polym Bull (Berl) 2013. [DOI: 10.1007/s00289-013-0915-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Wu W, Wang D, Lian Y. Controlled release of bovine serum albumin from stimuli-sensitive silk sericin based interpenetrating polymer network hydrogels. POLYM INT 2013. [DOI: 10.1002/pi.4429] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wen Wu
- Jiaxing University; Jiaxing 314001 People's Republic of China
| | - Dongsheng Wang
- Jiaxing University; Jiaxing 314001 People's Republic of China
| | - Yuan Lian
- Jiaxing University; Jiaxing 314001 People's Republic of China
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Verma G, Hassan PA. Self assembled materials: design strategies and drug delivery perspectives. Phys Chem Chem Phys 2013; 15:17016-28. [DOI: 10.1039/c3cp51207j] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Çalgeris İ, Çakmakçı E, Ogan A, Kahraman MV, Kayaman-Apohan N. Preparation and drug release properties of lignin-starch biodegradable films. STARCH-STARKE 2012. [DOI: 10.1002/star.201100158] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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