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Suhail M, Fang CW, Chiu IH, Khan A, Wu YC, Lin IL, Tsai MJ, Wu PC. Synthesis and Evaluation of Alginate-Based Nanogels as Sustained Drug Carriers for Caffeine. ACS OMEGA 2023; 8:23991-24002. [PMID: 37426260 PMCID: PMC10324385 DOI: 10.1021/acsomega.3c02699] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/08/2023] [Indexed: 07/11/2023]
Abstract
The objective of this study is to design a polymeric network of nanogels for sustained release of caffeine. Therefore, alginate-based nanogels were fabricated by a free-radical polymerization technique for the sustained delivery of caffeine. Polymer alginate was crosslinked with monomer 2-acrylamido-2-methylpropanesulfonic acid by crosslinker N',N'-methylene bisacrylamide. The prepared nanogels were subjected to sol-gel fraction, polymer volume fraction, swelling, drug loading, and drug release studies. A high gel fraction was seen with the increasing feed ratio of polymer, monomer, and crosslinker. Greater swelling and drug release were observed at pH 4.6 and 7.4 as compared to pH 1.2 due to the deprotonation and protonation of functional groups of alginate and 2-acrylamido-2-methylpropanesulfonic acid. An increase was observed in swelling, loading, and release of the drug with the incorporation of a high feed ratio of polymer and monomer, while a reduction was seen with the increase in crosslinker feed ratio. Similarly, an HET-CAM test was used to evaluate the safety of the prepared nanogels, which showed that the prepared nanogels have no toxic effect on the chorioallantoic membrane of fertilized chicken eggs. Similarly, different characterizations techniques such as FTIR, DSC, SEM, and particle size analysis were carried out to determine the development, thermal stability, surface morphology, and particle size of the synthesized nanogels, respectively. Thus, we can conclude that the prepared nanogels can be used as a suitable agent for the sustained release of caffeine.
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Affiliation(s)
- Muhammad Suhail
- School
of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chih-Wun Fang
- Division
of Pharmacy, Zuoying Branch of Kaohsiung
Armed Forces General Hospital, Kaohsiung 813, Taiwan
| | - I-Hui Chiu
- School
of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Arshad Khan
- Department
of Pharmaceutics, Faculty of Pharmacy, The
Islamia University of Bahawalpur, Khawaja Fareed Campus (Railway Road), Bahawalpur 63100, Pakistan
| | - Yi-Chun Wu
- School
of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - I-Ling Lin
- Department
of Medicine Laboratory Science and Biotechnology, College of Health
Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department
of Laboratory Medicine, Kaohsiung Medical
University Hospital, Kaohsiung 807, Taiwan
| | - Ming-Jun Tsai
- School
of Medicine, College of Medicine, China
Medical University, Taichung 404, Taiwan
- Department
of Neurology, China Medical University Hospital, Taichung 404, Taiwan
- Department
of Neurology, An-Nan Hospital, China Medical
University, Tainan 709, Taiwan
| | - Pao-Chu Wu
- School
of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department
of Medical Research, Kaohsiung Medical University
Hospital, Kaohsiung 807, Taiwan
- Drug
Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Suhail M, Ullah H, Vu QL, Khan A, Tsai MJ, Wu PC. Preparation of pH-Responsive Hydrogels Based on Chondroitin Sulfate/Alginate for Oral Drug Delivery. Pharmaceutics 2022; 14:pharmaceutics14102110. [PMID: 36297545 PMCID: PMC9606947 DOI: 10.3390/pharmaceutics14102110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/14/2022] [Accepted: 09/29/2022] [Indexed: 11/12/2022] Open
Abstract
This study investigates pH-sensitive hydrogels based on biocompatible, biodegradable polysaccharides and natural polymers such as chondroitin sulfate and alginate in combination with synthetic monomer such as acrylic acid, as controlled drug carriers. Investigations were conducted for chondroitin sulfate/alginate-graft-poly(acrylic acid) hydrogel in various mixing ratios of chondroitin sulfate, alginate and acrylic acid in the presence of ammonium persulfate and N',N'-Methylene bisacrylamide. Crosslinking and loading of drug were confirmed by Fourier transform infrared spectroscopy. Thermal stability of both polymers was enhanced after crosslinking as indicated by thermogravimetric analysis and differential scanning calorimeter thermogram of developed hydrogel. Similarly, surface morphology was evaluated by scanning electron microscopy, whereas crystallinity of the polymers and developed hydrogel was investigated by powder X-ray diffraction. Furthermore, swelling and drug-release studies were investigated in acidic and basic medium of pH 1.2 and 7.4 at 37 °C, respectively. Maximum swelling and drug release were detected at pH 7.4 as compared to pH 1.2. Increased incorporation of hydrogel contents led to an increase in porosity, drug loading, and gel fraction while a reduction in sol fraction was seen. The polymer volume fraction was found to be low at pH 7.4 compared to pH 1.2, indicating a prominent and greater swelling of the prepared hydrogels at pH 7.4. Likewise, a biodegradation study revealed a slow degradation rate of the developed hydrogel. Hence, we can conclude from the results that a fabricated system of hydrogel could be used as a suitable carrier for the controlled delivery of ketorolac tromethamine.
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Affiliation(s)
- Muhammad Suhail
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung City 80708, Taiwan
| | - Hamid Ullah
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung City 80708, Taiwan
| | - Quoc Lam Vu
- Department of Clinical Pharmacy, Thai Nguyen University of Medicine and Pharmacy, 284 Luong Ngoc Quyen Str., Thai Nguyen City 24000, Vietnam
| | - Arshad Khan
- Department of Pharmaceutics, Faculty of Pharmacy, Khawaja Fareed Campus (Railway Road), The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Ming-Jun Tsai
- Department of Neurology, China Medical University Hospital, Taichung 404, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung 404, Taiwan
- Department of Neurology, An-Nan Hospital, China Medical University, Tainan 404, Taiwan
- Correspondence: (M.-J.T.); (P.-C.W.); Tel.: +886-4-2205-2121 (M.-J.T.); +886-7-3121-101 (P.-C.W.)
| | - Pao-Chu Wu
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung City 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: (M.-J.T.); (P.-C.W.); Tel.: +886-4-2205-2121 (M.-J.T.); +886-7-3121-101 (P.-C.W.)
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