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Cen J, Li L, Huang L, Jiang G. Construction of a photothermal controlled-release microcapsule pesticide delivery system. RSC Adv 2022; 12:23387-23395. [PMID: 36090399 PMCID: PMC9382649 DOI: 10.1039/d2ra04672e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/10/2022] [Indexed: 11/21/2022] Open
Abstract
This study aimed to achieve the controlled-release of bioactive ingredients in microcapsule pesticide delivery systems. A photothermal controlled-release microcapsule pesticide delivery system was constructed using chitosan and polydopamine (PDA) as the wall materials to encapsulate avermectin. All the prepared microcapsules were characterized by the methods of optical microscopy, scanning electron microscopy, transmission electron microscopy, and Fourier-transform infrared spectroscopy. The slow-release, UV-shielding, photothermal performance, and the nematicidal activity of the prepared microcapsules were also systematically investigated. The results indicated that the prepared microcapsules had excellent slow-release and UV-shielding performance when further encapsulated with the PDA layer relative to those of the non-PDA-encapsulated products. The photothermal sensitivity of the AVM@CS/CMA/PDA composite microcapsule under the irradiation of near-infrared light (NIR) was dramatically enhanced with the photothermal conversion efficiency (η) of 14.93%. Furthermore, the nematicidal activity of the AVM@CS/CMA/PDA composite microcapsule system was effectively improved on exposure to the irradiation of a light-emitting diode (LED) full-spectrum light. The strategies used in this study for developing the photothermal controlled-release pesticide delivery system might play an important role on improving utilization of pesticides. A photothermal controlled-release microcapsule pesticide delivery system was constructed using chitosan and polydopamine as the wall materials to encapsulate avermectin, the utilization rate of avermectin was improved.![]()
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Affiliation(s)
- Jun Cen
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang, China
| | - Linhuai Li
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang, China
| | - Lingling Huang
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang, China
| | - Guangqi Jiang
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang, China
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
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Shahriari-Khalaji M, Hong S, Hu G, Ji Y, Hong FF. Bacterial Nanocellulose-Enhanced Alginate Double-Network Hydrogels Cross-Linked with Six Metal Cations for Antibacterial Wound Dressing. Polymers (Basel) 2020; 12:polym12112683. [PMID: 33202968 PMCID: PMC7696020 DOI: 10.3390/polym12112683] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 01/17/2023] Open
Abstract
Alginate (Alg) and bacterial nanocellulose (BNC) have exhibited great potential in biomedical applications, especially wound dressing. Non-toxicity and a moisture-maintaining nature are common features making them favorable for functional dressing fabrication. BNC is a natural biopolymer that promotes major advances to the current and future biomedical materials, especially in a flat or tubular membrane form with excellent mechanical strength at hydrated state. The main drawback limiting wide applications of both BNC and Alg is the lack of antibacterial activity, furthermore, the inherent poor mechanical property of Alg leads to the requirement of a secondary dressing in clinical treatment. To fabricate composite dressings with antibacterial activity and better mechanical properties, sodium alginate was efficiently incorporated into the BNC matrix using a time-saving vacuum suction method followed by cross-linking through immersion in separate solutions of six cations (manganese, cobalt, copper, zinc, silver, and cerium). The results showed the fabricated composites had not only pH-responsive antibacterial activities but also improved mechanical properties, which are capable of acting as smart dressings. All composites showed non-toxicity toward fibroblast cells. Rat model evaluation showed the skin wounds covered by the dressings healed faster than by BNC.
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Affiliation(s)
- Mina Shahriari-Khalaji
- Microbiological Engineering and Industrial Biotechnology Group, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; (M.S.-K.); (G.H.)
- Scientific Research Base of Bacterial Nanofiber Manufacturing and Composite Technology, China Textile Engineering Society, Shanghai 201620, China
| | - Siyi Hong
- Faculty of Applied Science and Engineering, University of Toronto, Toronto, ON M5S 1A1, Canada;
| | - Gaoquan Hu
- Microbiological Engineering and Industrial Biotechnology Group, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; (M.S.-K.); (G.H.)
- Scientific Research Base of Bacterial Nanofiber Manufacturing and Composite Technology, China Textile Engineering Society, Shanghai 201620, China
| | - Ying Ji
- Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong;
| | - Feng F. Hong
- Microbiological Engineering and Industrial Biotechnology Group, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; (M.S.-K.); (G.H.)
- Scientific Research Base of Bacterial Nanofiber Manufacturing and Composite Technology, China Textile Engineering Society, Shanghai 201620, China
- Correspondence: ; Tel.: +86-2167-792-649
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Gao J, Fan D, Song P, Zhang S, Liu X. Preparation and application of pH-responsive composite hydrogel beads as potential delivery carrier candidates for controlled release of berberine hydrochloride. ROYAL SOCIETY OPEN SCIENCE 2020; 7:200676. [PMID: 33391786 PMCID: PMC7735363 DOI: 10.1098/rsos.200676] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2005] [Accepted: 09/22/2020] [Indexed: 05/11/2023]
Abstract
For improving the effective concentration of berberine hydrochloride (BH) in the gastrointestinal tract, a series of pH-responsive hydrogel beads were prepared based on carboxymethylstarch-g-poly (acrylic acid)/palygorskite/starch/sodium alginate (CMS-g-PAA/PGS/ST/SA) in the present work. The developed hydrogel beads were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TG). Effect of palygorskite (PGS) content on the swelling properties of hydrogel beads and BH cumulative release were discussed. The pH responsiveness of hydrogel beads was also investigated in different media. Results illustrated that swelling of hydrogel beads and BH cumulative release from hydrogel beads were obviously affected by PGS content. The swelling ratio and BH cumulative release of composite hydrogel beads remarkably slowed down with PGS content increasing in the range from 10 to 40 wt%. The composite hydrogel beads were pH-responsive. At pH 7.4, the swelling ratio and BH cumulative release from composite hydrogel beads were the fastest among the dissolution media of pH 1.2, pH 6.8 and pH 7.4. The BH cumulative release from hydrogel beads was related to the swelling and relaxation of composite hydrogel beads and could be fitted better by the Higuchi model. The obtained composite hydrogel beads could be potentially used for the development of BH pharmaceutical dosage forms.
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Affiliation(s)
- Jiande Gao
- College of Pharmacy, Gansu University of Traditional Chinese Medicine, Lanzhou 730000, People's Republic of China
- Author for correspondence: Jiande Gao e-mail:
| | - Dongying Fan
- Gansu Provincial Hospital of TCM, Gansu University of Traditional Chinese Medicine, Lanzhou, People's Republic of China
| | - Ping Song
- College of Pharmacy, Gansu University of Traditional Chinese Medicine, Lanzhou 730000, People's Republic of China
| | - Shudan Zhang
- College of Pharmacy, Gansu University of Traditional Chinese Medicine, Lanzhou 730000, People's Republic of China
| | - Xiong Liu
- College of Pharmacy, Gansu University of Traditional Chinese Medicine, Lanzhou 730000, People's Republic of China
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Gao S, Chen Y, Hu R, Lu W, Yu L, Chen J, Liu S, Guo Y, Shen Q, Wang B, Fang W. Visualized analysis and evaluation of simultaneous controlled release of metformin hydrochloride and gliclazide from sandwiched osmotic pump capsule. Drug Dev Ind Pharm 2020; 46:1776-1786. [PMID: 32895014 DOI: 10.1080/03639045.2020.1821047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The aim of this study was to develop the Metformin Hydrochloride and Gliclazide (MH-GZ) sandwiched osmotic pump capsule which could overcome the problems associated with short half-life and burst release. The system could deliver drugs with different solubility simultaneously at zero-order rate, in which MH-GZ were filled in both sides of the push layer respectively. The single factor and orthogonal test were employed to obtain the optimized formulation with the evaluation index of similarity factor (ƒ2). R language was used to visualized analyze the main influence factors of drug release and their correlations. Pharmacokinetic study was performed in beagle dogs compared to the marketed conventional product, which showed decreased Cmax, prolonged Tmax, and improved bioavailability, independent of pH and agitational speed but related to osmotic pressure differences across the semi permeable membrane. The designed sandwiched osmotic pump capsule proposed a promising substitute for the marketed product for the treatment of type 2 diabetes.
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Affiliation(s)
- Song Gao
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Yanjun Chen
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China.,College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu'an, Anhui, China
| | - Rongfeng Hu
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, Anhui, China.,Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, Anhui, China.,Anhui Province Key Laboratory of Pharmaceutical Technology and Application, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Wenjie Lu
- School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Lingfei Yu
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Jiayi Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, New York, NY, USA
| | - Songlin Liu
- Anhui Huangshan Capsule Co., Ltd, Huangshan, Anhui, China
| | - Yuxing Guo
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, New York, NY, USA
| | - Qiang Shen
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Bin Wang
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Wenyou Fang
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui, China
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Effect of raw material variability of glipizide on the in vitro dissolution rate and in vivo bioavailability performance: The importance of particle size. Asian J Pharm Sci 2020; 14:165-173. [PMID: 32104448 PMCID: PMC7032084 DOI: 10.1016/j.ajps.2018.06.005] [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: 05/16/2018] [Revised: 06/11/2018] [Accepted: 06/19/2018] [Indexed: 11/20/2022] Open
Abstract
The objective of this study was to understand the impact of active pharmaceutical ingredients (API) particle size on a re-developed generic product of glipizide and to improve its formulation so that it exhibits bioequivalent to that of the reference listed drug (RLD). Two commercial batches of APIs (API-1 and API-2) with the same polymorphism and one batch of home-made APIs (API-3) with super-small particle size were used in the present study. The in vitro dissolution profiles of the tested formulations were compared with the RLD in a series of dissolution media. Then, the impact of particle size on in vivo absorption was evaluated in Beagle dogs. Compared with the RLD, formulation A with larger API size showed slower dissolution in pH 6.0 and 7.4 medium, resulting bioinequivalent with the RLD. Conversely, formulation B with smaller API size demonstrated similar in vitro dissolution profiles with the RLD and thus exhibited bioequivalent in the present study. Furthermore, formulation C with super small particle size still exhibited identical oral absorption although rapid dissolution was observed in the tested condition. Herein, it indicated that 2-5 µm might be defined as the "inert size range" of glipizide for ensuring the bioequivalence with the RLD. The results in the present study might help to obtain a better understanding of the variability in raw materials for oral absorption, develop a bioequivalent product and thus post-market quality control.
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Younes NF, El Assasy AEHI, Makhlouf AIA. Microenvironmental pH-modified Amisulpride-Labrasol matrix tablets: development, optimization and in vivo pharmacokinetic study. Drug Deliv Transl Res 2020; 11:103-117. [PMID: 31900797 DOI: 10.1007/s13346-019-00706-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Amisulpride (AMS) is atypical antipsychotic with a weak basic nature (pKa 9.37), which results in low solubility in the high pH of the intestine. It is also recognized as a substrate of P-glycoprotein efflux pump. Both factors lead to its low oral bioavailability (48%). The daily dose of AMS is between 200 and 1200 mg to be taken in divided doses which compromise patient compliance. Therefore, controlled release formulation of AMS is of clinical significance. AMS was formulated into matrix tablets containing Labrasol, P-glycoprotein efflux inhibitor, and a penetration enhancer, using direct compression technique. The tablets were prepared according to 21·41 factorial design using two polymers, namely, HPMC and Carbopol 934 at four concentrations (20%, 30%, 40%, 50%). Percentage AMS released after 2 h (Q2hr%) and 8 h (Q8hr%) were chosen as dependent variables. Two acidic pH modifiers (fumaric acid and tartaric acid) at two levels (15% and 30%) were incorporated in the tablet according to 22 factorial design. All formulae with acidic pH modifier had similarity factor (f2) ≥ 50 proving the pH independent release of AMS. The pharmacokinetic study in rabbits revealed 30% enhancement of the oral absorption AMS imparted by the pH-modified matrix tablet containing Labrasol. Graphical abstract.
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Affiliation(s)
- Nihal Farid Younes
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El Aini, Cairo, 11562, Egypt
| | - Abd El-Halim I El Assasy
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El Aini, Cairo, 11562, Egypt
| | - Amal I A Makhlouf
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El Aini, Cairo, 11562, Egypt.
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