1
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Yousefi M, Ghahremanzadeh R, Nejadmoghaddam MR, Samadi FY, Najafzadeh S, Fatideh FM, Mohammadi Z, Minai-Tehrani A. Nanofabrication of chitosan-based dressing to treat the infected wounds: in vitro and in vivo evaluations. Future Sci OA 2024; 10:FSO921. [PMID: 38827799 PMCID: PMC11140651 DOI: 10.2144/fsoa-2023-0077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 10/12/2023] [Indexed: 06/05/2024] Open
Abstract
Aim: Here, an innovative kind of antibacterial nanocomposite film is developed by incorporating graphene oxide and zinc oxide into chitosan matrix. Materials & methods: Our dressing was fabricated using the solution casting method. Fourier transform infrared spectra and TGA-DTG clearly confirmed the structure of film dressing. Results & conclusion: Our results showed the tensile strength and elongation at the break of the films were 20.1 ± 0.7 MPa and 36 ± 10%, respectively. Our fabricated film could absorb at least three-times the fluid of its dry weight while being biocompatible, antibacterial, non-irritant and non-allergic. In addition, it accelerated the healing process of infected wounds by regulating epithelium thickness and the number of inflammatory cells, thus it may be useful for direct application to damaged infected wounds.
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Affiliation(s)
- Maryam Yousefi
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
| | - Ramin Ghahremanzadeh
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
| | | | - Fatemeh Yazdi Samadi
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
| | - Somayeh Najafzadeh
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
| | | | - Zohreh Mohammadi
- Department of Pharmaceutics & Pharmaceutical Nanotechnology, School of Pharmacy, Iran University of Medical Sciences, Tehran, 1475886973, Iran
| | - Arash Minai-Tehrani
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
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2
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Wei C, Yang X, Li Y, Wang L, Xing S, Qiao C, Li Y, Wang S, Zheng J, Dong Q. N-lauric-O-carboxymethyl chitosan: Synthesis, characterization and application as a pH-responsive carrier for curcumin particles. Int J Biol Macromol 2024; 256:128421. [PMID: 38013085 DOI: 10.1016/j.ijbiomac.2023.128421] [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: 12/12/2022] [Revised: 11/13/2023] [Accepted: 11/23/2023] [Indexed: 11/29/2023]
Abstract
A pH-responsive amphiphilic chitosan derivative, N-lauric-O-carboxymethyl chitosan (LA-CMCh), is synthesized. Its molecular structures are characterized by FTIR, 1H NMR, and XRD methods. The influencing factors are investigated, including the amount of lauric acid (LA), carboxymethyl chitosan (CMCh), N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (EDC), and N-hydroxysuccinimide (NHS), and their molar ratio, reaction time, and reaction temperature on the substitution. The degrees of substitution (DS) of the lauric groups on the -NH2 groups are calculated based on the integrated data of 1H NMR spectra. The optimum reaction condition is obtained as a reaction time of 6 h, a reaction temperature of 80 °C, and a molar ratio of lauric acid to O-carboxymethyl chitosan to N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride to N-hydroxysuccinimide of 1:3:4.5:4.5, respectively. The crystallinity and initial decomposition temperature of LA-CMCh decrease, but the maximum decomposition temperature increases. The crystallinity is reduced due to the introduction of LA and the degree of hydrogen bonding among LA-CMCh molecules. LA-CMCh could self-aggregate into particles, which size and critical aggregation concentration depend on the degree of substitution and medium pH. LA-CMCh aggregates could load curcumin up to 21.70 %, and continuously release curcumin for >200 min. LA-CMCh shows nontoxicity to fibroblast HFF-1 cells and good antibacterial activity against S. aureus and E. coli, indicating that it could be used as an oil-soluble-drug carrier.
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Affiliation(s)
- Chunyan Wei
- School of Chemistry and Chemical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China
| | - Xiaodeng Yang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China.
| | - Yong Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China
| | - Ling Wang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China
| | - Shu Xing
- School of Chemistry and Chemical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China
| | - Congde Qiao
- School of Chemistry and Chemical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China
| | - Yan Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China.
| | - Shoujuan Wang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China.
| | - Jialin Zheng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Ji'nan 250353, China; School of Chemistry and Chemical Engineering, University of Jinan, Ji'nan 250353, China
| | - Qiaoyan Dong
- Technology Center of Shandong Fangyan Biological Technology Co., LTD, 250021 Ji'nan, China
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Imran H, Tang Y, Wang S, Yan X, Liu C, Guo L, Wang E, Xu C. Optimized DOX Drug Deliveries via Chitosan-Mediated Nanoparticles and Stimuli Responses in Cancer Chemotherapy: A Review. Molecules 2023; 29:31. [PMID: 38202616 PMCID: PMC10780101 DOI: 10.3390/molecules29010031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/15/2023] [Accepted: 12/16/2023] [Indexed: 01/12/2024] Open
Abstract
Chitosan nanoparticles (NPs) serve as useful multidrug delivery carriers in cancer chemotherapy. Chitosan has considerable potential in drug delivery systems (DDSs) for targeting tumor cells. Doxorubicin (DOX) has limited application due to its resistance and lack of specificity. Chitosan NPs have been used for DOX delivery because of their biocompatibility, biodegradability, drug encapsulation efficiency, and target specificity. In this review, various types of chitosan derivatives are discussed in DDSs to enhance the effectiveness of cancer treatments. Modified chitosan-DOX NP drug deliveries with other compounds also increase the penetration and efficiency of DOX against tumor cells. We also highlight the endogenous stimuli (pH, redox, enzyme) and exogenous stimuli (light, magnetic, ultrasound), and their positive effect on DOX drug delivery via chitosan NPs. Our study sheds light on the importance of chitosan NPs for DOX drug delivery in cancer treatment and may inspire the development of more effective approaches for cancer chemotherapy.
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Affiliation(s)
- HafizMuhammad Imran
- Department of Biochemistry, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.I.); (Y.T.); (S.W.); (X.Y.); (C.L.); (L.G.)
| | - Yixin Tang
- Department of Biochemistry, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.I.); (Y.T.); (S.W.); (X.Y.); (C.L.); (L.G.)
| | - Siyuan Wang
- Department of Biochemistry, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.I.); (Y.T.); (S.W.); (X.Y.); (C.L.); (L.G.)
| | - Xiuzhang Yan
- Department of Biochemistry, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.I.); (Y.T.); (S.W.); (X.Y.); (C.L.); (L.G.)
| | - Chang Liu
- Department of Biochemistry, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.I.); (Y.T.); (S.W.); (X.Y.); (C.L.); (L.G.)
| | - Lei Guo
- Department of Biochemistry, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.I.); (Y.T.); (S.W.); (X.Y.); (C.L.); (L.G.)
| | - Erlei Wang
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Caina Xu
- Department of Biochemistry, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.I.); (Y.T.); (S.W.); (X.Y.); (C.L.); (L.G.)
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4
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Hosseini MS, Mohseni M, Naseripour M, Mirzaei M, Bagherzadeh K, Alemezadeh SA, Mehravi B. Synthesis and evaluation of modified lens using plasma treatment containing timolol-maleate loaded lauric acid-decorated chitosan-alginate nanoparticles for glaucoma. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023; 34:1793-1812. [PMID: 36872905 DOI: 10.1080/09205063.2023.2187204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/07/2023]
Abstract
Reducing intraocular pressure (IOP) with eye drops is one of the most common ways to control glaucoma. Low bioavailability and high frequency of administration in eye drops are major challenges in ocular pharmacotherapy. Contact lenses have attracted the attention of scientists in recent decades as an alternative method. In this study, with the aim of long-term drug delivery and better patient compatibility, contact lenses with surface modification and nanoparticles were used. In this study, timolol-maleate was loaded into polymeric nanoparticles made of chitosan conjugate with lauric acid and sodium alginate. Then silicon matrix was mixed with a curing agent (10:1), and the suspension of nanoparticles was added to the precursor and cured. Finally, for surface modification, the lenses were irradiated with oxygen plasma at different exposure times (30, 60, and 150 s) and soaked in different BSA concentrations (1, 3, and 5% w/v). The results showed nanoparticles with a size of 50 nm and a spherical shape were synthesized. The best surface modification of the lenses was for 5 (% w/v) albumin concentration and 150 s exposure time, which had the highest increase in hydrophilicity. Drug release from nanoparticles continued for 3 days and this amount increased to 6 days after dispersion in the modified lens matrix. The drug model and kinetic study show the Higuchi model completely supported the release profile. This study represents the novel drug delivery system to control intra-ocular pressure as a candidate platform for glaucoma treatment. Improved compatibility and drug release from the designed contact lenses would prepare new insight into the mentioned disease treatment.
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Affiliation(s)
- Maryam Sadat Hosseini
- Medical Nanotechnology Department, Advanced Technologies Faculty, Iran University of Medical Sciences, Tehran, Iran
| | - Mojdeh Mohseni
- Stem Cell and Regenerative Medicine Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Masood Naseripour
- Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mehdi Mirzaei
- Iran Ministry of Health and Medical Education, Deputy Ministry for Education, Tehran, Iran
| | - Kowsar Bagherzadeh
- Stem Cell and Regenerative Medicine Research Center, Iran University of Medical Sciences, Tehran, Iran
- Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | | | - Bita Mehravi
- Medical Nanotechnology Department, Advanced Technologies Faculty, Iran University of Medical Sciences, Tehran, Iran
- Finetech in Medicine Research Center, Iran University of Medical, Tehran, Iran
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5
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Egorov AR, Kirichuk AA, Rubanik VV, Rubanik VV, Tskhovrebov AG, Kritchenkov AS. Chitosan and Its Derivatives: Preparation and Antibacterial Properties. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6076. [PMID: 37763353 PMCID: PMC10532898 DOI: 10.3390/ma16186076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/28/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023]
Abstract
This comprehensive review illuminates the various methods of chitosan extraction, its antibacterial properties, and its multifarious applications in diverse sectors. We delve into chemical, physical, biological, hybrid, and green extraction techniques, each of which presents unique advantages and disadvantages. The choice of method is dictated by multiple variables, including the desired properties of chitosan, resource availability, cost, and environmental footprint. We explore the intricate relationship between chitosan's antibacterial activity and its properties, such as cationic density, molecular weight, water solubility, and pH. Furthermore, we spotlight the burgeoning applications of chitosan-based materials like films, nanoparticles, nonwoven materials, and hydrogels across the food, biomedical, and agricultural sectors. The review concludes by highlighting the promising future of chitosan, underpinned by technological advancements and growing sustainability consciousness. However, the critical challenges of optimizing chitosan's production for sustainability and efficiency remain to be tackled.
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Affiliation(s)
- Anton R. Egorov
- Department of Human Ecology and Biolementology, RUDN University, 6 Miklukho-Maklaya St., 117198 Moscow, Russia; (A.R.E.); (A.A.K.); (A.G.T.)
| | - Anatoly A. Kirichuk
- Department of Human Ecology and Biolementology, RUDN University, 6 Miklukho-Maklaya St., 117198 Moscow, Russia; (A.R.E.); (A.A.K.); (A.G.T.)
| | - Vasili V. Rubanik
- Institute of Technical Acoustics NAS of Belarus, Ludnikova Prosp. 13, 210009 Vitebsk, Belarus; (V.V.R.); (V.V.R.J.)
| | - Vasili V. Rubanik
- Institute of Technical Acoustics NAS of Belarus, Ludnikova Prosp. 13, 210009 Vitebsk, Belarus; (V.V.R.); (V.V.R.J.)
| | - Alexander G. Tskhovrebov
- Department of Human Ecology and Biolementology, RUDN University, 6 Miklukho-Maklaya St., 117198 Moscow, Russia; (A.R.E.); (A.A.K.); (A.G.T.)
| | - Andreii S. Kritchenkov
- Department of Human Ecology and Biolementology, RUDN University, 6 Miklukho-Maklaya St., 117198 Moscow, Russia; (A.R.E.); (A.A.K.); (A.G.T.)
- Institute of Technical Acoustics NAS of Belarus, Ludnikova Prosp. 13, 210009 Vitebsk, Belarus; (V.V.R.); (V.V.R.J.)
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6
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Javed S, Abbas G, Shah S, Rasul A, Irfan M, Saleem A, Hosny KM, Bukhary SM, Safhi AY, Sabei FY, Majrashi MA, Alkhalidi HM, Alissa M, Khan SM, Hanif M. Tobramycin-loaded nanoparticles of thiolated chitosan for ocular drug delivery: Preparation, mucoadhesion and pharmacokinetic evaluation. Heliyon 2023; 9:e19877. [PMID: 37809498 PMCID: PMC10559273 DOI: 10.1016/j.heliyon.2023.e19877] [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: 05/27/2023] [Revised: 09/04/2023] [Accepted: 09/04/2023] [Indexed: 10/10/2023] Open
Abstract
The present work aimed to develop nanoparticles of tobramycin (TRM) using thiolated chitosan (TCS) in order to improve the mucoadhesion, antibacterial effect and pharmacokinetics. The nanoparticles were evaluated for their compatibility, thermal stability, particle size, zeta potential, mucoadhesion, drug release, kinetics of TRM release, corneal permeation, toxicity and ocular irritation. The thiolation of chitosan was confirmed by 1H NMR and FTIR, which showed peaks at 6.6 ppm and 1230 cm-1, respectively. The nanoparticles had a diameter of 73 nm, a negative zeta potential (-21 mV) and a polydispersity index of 0.15. The optimized formulation, NT8, exhibited the highest values of mucoadhesion (7.8 ± 0.541h), drug loading (87.45 ± 1.309%), entrapment efficiency (92.34 ± 2.671%), TRM release (>90%) and corneal permeation (85.56%). The release pattern of TRM from the developed formulations was fickian diffusion. TRM-loaded nanoparticles showed good antibacterial activity against Pseudomonas aeruginosa. The optimized formulation NT8 (0.1% TRM) greatly increased the AUC(0-∞) (1.5-fold) while significantly reducing the clearance (5-fold) compared to 0.3% TRM. Pharmacokinetic parameters indicated improved ocular retention and bioavailability of TRM loaded nanoparticles. Our study demonstrated that the TRM-loaded nanoparticles had improved mucoadhesion and pharmacokinetics and a suitable candidate for effective treatment of ocular bacterial infections.
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Affiliation(s)
- Sadaf Javed
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad 38000, Pakistan
| | - Ghulam Abbas
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad 38000, Pakistan
| | - Shahid Shah
- Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Government College University Faisalabad 38000, Pakistan
| | - Akhtar Rasul
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad 38000, Pakistan
| | - Muhammad Irfan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad 38000, Pakistan
| | - Ammara Saleem
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University Faisalabad 38000, Pakistan
| | - Khaled M. Hosny
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Sahar M. Bukhary
- Department of Biological Analysis, Neuroscience unit, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Awaji Y. Safhi
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Fahad Y. Sabei
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Mohammed A. Majrashi
- Department of Pharmacology, College of Medicine, University of Jeddah, Jeddah 23890, Saudi Arabia
| | - Hala M. Alkhalidi
- Department of Clinical Pharmacy, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohammed Alissa
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Sajid Mehmood Khan
- Faculty of Pharmacy and Alternative Medicine, The Islamia University Bahawalpur, Pakistan
| | - Muhammad Hanif
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University Multan, Pakistan
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7
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Huang A, Chen Y, Wu C. Wound Dressing Double-Crosslinked Quick Self-Healing Hydrogel Based on Carboxymethyl Chitosan and Modified Nanocellulose. Polymers (Basel) 2023; 15:3389. [PMID: 37631446 PMCID: PMC10459649 DOI: 10.3390/polym15163389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/09/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
The use of hydrogels in wound dressings, which is pivotal for effective wound treatment, has been widely applied to diverse medical wound conditions. However, formulating natural hydrogels that combine robust strength and self-healing capabilities is a significant challenge. To overcome this, we successfully designed a natural nanocellulose self-healing hydrogel that can quickly self-heal and restore the complete hydrogel structure after injury to fill the injured area and protect the wound from external damage. Our study utilized modified natural polymer carboxymethyl chitosan (CMC), hydrazide-modified carboxymethyl cellulose nanofibers (HCNF), and cellulose nanocrystals modified by dialdehyde (DACNC) to fabricate the hydrogel. The amides containing more amino groups and HCNF in CMC can be used as cross-linking nodes, and the high aspect ratio and specific surface area of DACNC are favorable for the connection of many active hydrogels. The hydrogel is crosslinked by the dynamic imide bond and hydrazone bond between the amino group of CMC, the amide of HCNF, and the aldehyde of DACNC and has a double network structure. These connections can be readily reassembled when disrupted, enabling fast self-healing of hydrogels within five minutes. Moreover, HCNF and DACNC were incorporated as nano-reinforced fillers to bolster the hydrogel's strength while preserving its high liquid absorption capacity (381% equilibrium swelling rate).
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Affiliation(s)
| | - Yehong Chen
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China;
| | - Chaojun Wu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China;
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8
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Yang F, Chen L, Zhao D, Guo T, Yu D, Zhang X, Li P, Chen J. A novel water-soluble chitosan grafted with nerol: Synthesis, characterization and biological activity. Int J Biol Macromol 2023; 232:123498. [PMID: 36731699 DOI: 10.1016/j.ijbiomac.2023.123498] [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: 11/16/2022] [Revised: 01/20/2023] [Accepted: 01/28/2023] [Indexed: 02/01/2023]
Abstract
In order to improve the antibacterial activity of chitosan and change its solubility, a novel water-soluble chitosan (CS)-nerol (N) derivative (CS-N) was prepared via Schiff base reaction and grafting reaction. FT-IR, NMR, XRD, TGA and SEM were used to characterize the structure and physicochemical properties, and in vitro antibacterial, antioxidant, and cellular assays were used to test for bioactivity and safety. The results revealed that the C6 hydroxyl group of CS was substituted with N, with a degree of substitution of 38 % for CS-N. Furthermore, compared to CS, CS-N demonstrated superior antibacterial activity against Escherichia coli and Staphylococcus aureus, as well as significant DPPH and ABTS free radical scavenging activity. Most importantly, CS-N did not harm HaCaT cells. In conclusion, this study provides a promising strategy for the design of chitosan derivatives with significant potential for application in pharmaceutical, food and cosmetic applications.
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Affiliation(s)
- Faming Yang
- Marine College, Shandong University, Weihai 264209, China
| | - Liqi Chen
- Marine College, Shandong University, Weihai 264209, China
| | - Di Zhao
- Marine College, Shandong University, Weihai 264209, China
| | - Tingting Guo
- Marine College, Shandong University, Weihai 264209, China
| | - Dingyi Yu
- Marine College, Shandong University, Weihai 264209, China
| | - Xinhua Zhang
- School of Photoelectric Engineering, Changzhou Institute of Technology, Changzhou 213032, China; Suzhou Amazing Grace Medical Equipment Co., Ltd, Suzhou 215011, China
| | - Peiyuan Li
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530000, China
| | - Jingdi Chen
- Marine College, Shandong University, Weihai 264209, China.
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9
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Thambiliyagodage C, Jayanetti M, Mendis A, Ekanayake G, Liyanaarachchi H, Vigneswaran S. Recent Advances in Chitosan-Based Applications-A Review. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16052073. [PMID: 36903188 PMCID: PMC10004736 DOI: 10.3390/ma16052073] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/24/2023] [Accepted: 03/01/2023] [Indexed: 05/31/2023]
Abstract
Chitosan derived from chitin gas gathered much interest as a biopolymer due to its known and possible broad applications. Chitin is a nitrogen-enriched polymer abundantly present in the exoskeletons of arthropods, cell walls of fungi, green algae, and microorganisms, radulae and beaks of molluscs and cephalopods, etc. Chitosan is a promising candidate for a wide variety of applications due to its macromolecular structure and its unique biological and physiological properties, including solubility, biocompatibility, biodegradability, and reactivity. Chitosan and its derivatives have been known to be applicable in medicine, pharmaceuticals, food, cosmetics, agriculture, the textile and paper industries, the energy industry, and industrial sustainability. More specifically, their use in drug delivery, dentistry, ophthalmology, wound dressing, cell encapsulation, bioimaging, tissue engineering, food packaging, gelling and coating, food additives and preservatives, active biopolymeric nanofilms, nutraceuticals, skin and hair care, preventing abiotic stress in flora, increasing water availability in plants, controlled release fertilizers, dye-sensitised solar cells, wastewater and sludge treatment, and metal extraction. The merits and demerits associated with the use of chitosan derivatives in the above applications are elucidated, and finally, the key challenges and future perspectives are discussed in detail.
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Affiliation(s)
- Charitha Thambiliyagodage
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, Malabe 10115, Sri Lanka
| | - Madara Jayanetti
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, Malabe 10115, Sri Lanka
| | - Amavin Mendis
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, Malabe 10115, Sri Lanka
| | - Geethma Ekanayake
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, Malabe 10115, Sri Lanka
| | - Heshan Liyanaarachchi
- Faculty of Humanities and Sciences, Sri Lanka Institute of Information Technology, Malabe 10115, Sri Lanka
| | - Saravanamuthu Vigneswaran
- Faculty of Engineering and Information Technology, University of Technology Sydney, P.O. Box 123, Broadway, NSW 2007, Australia
- Faculty of Sciences & Technology (RealTek), Norwegian University of Life Sciences, P.O. Box 5003, N-1432 Ås, Norway
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10
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Younas F, Zaman M, Aman W, Farooq U, Raja MAG, Amjad MW. Thiolated Polymeric Hydrogels for Biomedical Applications: A Review. Curr Pharm Des 2023; 29:3172-3186. [PMID: 37622704 DOI: 10.2174/1381612829666230825100859] [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: 03/23/2023] [Revised: 07/06/2023] [Accepted: 07/20/2023] [Indexed: 08/26/2023]
Abstract
Hydrogels are a three-dimensional (3D) network of hydrophilic polymers. The physical and chemical crosslinking of polymeric chains maintains the structure of the hydrogels even when they are swollen in water. They can be modified with thiol by thiol epoxy, thiol-ene, thiol-disulfide, or thiol-one reactions. Their application as a matrix for protein and drug delivery, cellular immobilization, regenerative medicine, and scaffolds for tissue engineering was initiated in the early 21st century. This review focuses on the ingredients, classification techniques, and applications of hydrogels, types of thiolation by different thiol-reducing agents, along with their mechanisms. In this study, different applications for polymers used in thiolated hydrogels, including dextran, gelatin, polyethylene glycol (PEG), cyclodextrins, chitosan, hyaluronic acid, alginate, poloxamer, polygalacturonic acid, pectin, carrageenan gum, arabinoxylan, carboxymethyl cellulose (CMC), gellan gum, and polyvinyl alcohol (PVA) are reviewed.
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Affiliation(s)
- Farhan Younas
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan
| | - Muhammad Zaman
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan
| | - Waqar Aman
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan
| | - Umer Farooq
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan
| | | | - Muhammad Wahab Amjad
- Center for Ultrasound Molecular Imaging and Therapeutics, Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, PA 15213, USA
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Sun X, Li N, Wang X, Mu Y, Su C, Cong X, Wang X, Wu F, Wu G, Chen X, Feng C. PEG-mediated hybrid hemostatic gauze with in-situ growth and tightly-bound mesoporous silicon. BIOMATERIALS ADVANCES 2022; 143:213179. [PMID: 36395624 DOI: 10.1016/j.bioadv.2022.213179] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/11/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
Pre-hospital control of bleeding is critical to save lives, however the development of hemostatic agents with efficient and safe performance is still a challenge. In this study, a hybrid hemostatic gauze (MG-PEG) with in-situ growth and tightly bound mesoporous silicon (MSN) was prepared by template method for hemorrhage control. This material integrated meso-porosity, blood coagulation and stability into flexible gauze fiber. The PEG in MG-PEG was not only used as template for the in-suit MSN growth, but also acted as joint connection between the gauze fibers and MSN. The MSN particles were firmly bound to the surface of gauze fibers with extremely low leakage after 3 min of sonication and displayed a comparable coagulant activity to untreated sample. The results of animal experiments confirmed that MG-PEG possessed superior hemostatic performance over silicates-based inorganic hemostasis-Combat Gauze, in terms of higher coagulant activity (in vivo clotting time <200 s), minimized loss of active components (liquids OD was only 3 % of CG), well biocompatibility (hemolysis ratio < 5 %, no cytotoxicity) and wider indications range for practical application.
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Affiliation(s)
- Xiaojie Sun
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Na Li
- Department of Intensive Care Medicine, Qingdao Fifth People's Hospital, 3# Jiaxiang Road, Qingdao 266002, Shandong Province, China
| | - Xiaolei Wang
- Department of Stomatology, Qingdao Special Servicemen Recuperation Center of PLA Navy, No. 18 Yueyang Road, Qingdao 266071, China
| | - Yuzhi Mu
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Chang Su
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Xin Cong
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Xiaoye Wang
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Feifei Wu
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Guangsheng Wu
- Department of Stomatology, Qingdao Special Servicemen Recuperation Center of PLA Navy, No. 18 Yueyang Road, Qingdao 266071, China
| | - Xiguang Chen
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China; Qingdao National Laboratory for Marine Science and Technology, 1# Wenhai Road, Qingdao 266000, Shandong Province, China
| | - Chao Feng
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China.
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Marwaha TK, Madgulkar A, Bhalekar M, Asgaonkar K, Gachche R, Shewale P. Tailoring the properties of chitosan by grafting with 2-mercaptobenzoic acid to improve mucoadhesion: in silico studies, synthesis and characterization. Prog Biomater 2022; 11:397-408. [PMID: 36205916 DOI: 10.1007/s40204-022-00201-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 08/20/2022] [Indexed: 11/30/2022] Open
Abstract
Mucoadhesive polymers improve oral bioavailability of drugs by prolonging the duration of adhesion of drugs with mucosa. Various methods could be employed to address the problems of mucoadhesive polymers like weak adhesion forces. Chemical modification of polymers, such as the addition of a thiol group or thiolation, is another way for improving the polymers' mucoadhesive properties that is studied in present research work. A novel thiomer of chitosan was prepared by attaching 2-mercaptobenzoic acid, a hydrophobic ligand onto it. The docking of thiomer and chitosan with mucin structure showed higher binding energy for former. The prepared thiomer was subjected to X-ray diffraction and DSC which established reduction in crystallinity and formation of a new compound through changes in glass transition, melting point and change in diffraction pattern. The NMR studies established conjugation of 2-mercapto benzoic acid to chitosan. The increased mucoadhesion in thiomer behaviour (2-3 fold) was confirmed through mucus glycoprotein assay as well as through texture analysis. The permeation enhancing the property of thiomer was established by demonstrating the permeation of phenol red across thiomer treated intestinal membrane. An in vitro cell toxicity assay was done to establish toxicity of chitosan and thiolated chitosan. Finally, the reduced water uptake of thiomer over chitosan proved that the increase in mucoadhesion is not contributed by swelling. Thus, a thiomer with improved mucoadhesion and enhanced permeation properties was prepared and characterized. Hence, all these properties render the newly synthesized polymer a better alternative to chitosan as an excipient for mucoadhesive drug delivery systems.
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Affiliation(s)
- Tejinder K Marwaha
- Department of Pharmaceutics, AISSMS College of Pharmacy, RB Motilal Kennedy Rd, Near RTO, Sangamvadi, Pune, Maharashtra, 411001, India.
| | - Ashwini Madgulkar
- Department of Pharmaceutics, AISSMS College of Pharmacy, RB Motilal Kennedy Rd, Near RTO, Sangamvadi, Pune, Maharashtra, 411001, India
| | - Mangesh Bhalekar
- Department of Pharmaceutics, AISSMS College of Pharmacy, RB Motilal Kennedy Rd, Near RTO, Sangamvadi, Pune, Maharashtra, 411001, India
| | | | - Rajesh Gachche
- Department of Biotechnology, Savitribaiphule Pune University, Pune, India
| | - Pallavi Shewale
- Department of Biotechnology, Savitribaiphule Pune University, Pune, India
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13
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Sheng Y, Sun X, Han J, Hong W, Feng J, Xie S, Li Y, Yan F, Li K, Tian B. N-acetylcysteine functionalized chitosan oligosaccharide-palmitic acid conjugate enhances ophthalmic delivery of flurbiprofen and its mechanisms. Carbohydr Polym 2022; 291:119552. [DOI: 10.1016/j.carbpol.2022.119552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 04/16/2022] [Accepted: 04/26/2022] [Indexed: 11/16/2022]
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Effect of Saccharides Coating on Antibacterial Potential and Drug Loading and Releasing Capability of Plasma Treated Polylactic Acid Films. Int J Mol Sci 2022; 23:ijms23158821. [PMID: 35955952 PMCID: PMC9369226 DOI: 10.3390/ijms23158821] [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: 06/30/2022] [Revised: 08/02/2022] [Accepted: 08/06/2022] [Indexed: 02/07/2023] Open
Abstract
More than half of the hospital-associated infections worldwide are related to the adhesion of bacteria cells to biomedical devices and implants. To prevent these infections, it is crucial to modify biomaterial surfaces to develop the antibacterial property. In this study, chitosan (CS) and chondroitin sulfate (ChS) were chosen as antibacterial coating materials on polylactic acid (PLA) surfaces. Plasma-treated PLA surfaces were coated with CS either direct coating method or the carbodiimide coupling method. As a next step for the combined saccharide coating, CS grafted samples were immersed in ChS solution, which resulted in the polyelectrolyte complex (PEC) formation. Also in this experiment, to test the drug loading and releasing efficiency of the thin film coatings, CS grafted samples were immersed into lomefloxacin-containing ChS solution. The successful modifications were confirmed by elemental composition analysis (XPS), surface topography images (SEM), and hydrophilicity change (contact angle measurements). The carbodiimide coupling resulted in higher CS grafting on the PLA surface. The coatings with the PEC formation between CS-ChS showed improved activity against the bacteria strains than the separate coatings. Moreover, these interactions increased the lomefloxacin amount adhered to the film coatings and extended the drug release profile. Finally, the zone of inhibition test confirmed that the CS-ChS coating showed a contact killing mechanism while drug-loaded films have a dual killing mechanism, which includes contact, and release killing.
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15
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Functionalized chitosan as a promising platform for cancer immunotherapy: A review. Carbohydr Polym 2022; 290:119452. [DOI: 10.1016/j.carbpol.2022.119452] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/30/2022] [Accepted: 03/30/2022] [Indexed: 12/20/2022]
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Mokgalapa N, Akinola SA, Shoko T, Pillai SK, Sivakumar D. Chitosan molecular weights affect anthracnose incidence and elicitation of defence-related enzymes in avocado (Persea americana) cultivar ‘Fuerte’. Int J Food Microbiol 2022; 366:109561. [DOI: 10.1016/j.ijfoodmicro.2022.109561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/13/2022] [Accepted: 01/31/2022] [Indexed: 10/19/2022]
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17
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A chitosan-vitamin C based injectable hydrogel improves cell survival under oxidative stress. Int J Biol Macromol 2022; 202:102-111. [PMID: 35038464 DOI: 10.1016/j.ijbiomac.2022.01.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/21/2021] [Accepted: 01/06/2022] [Indexed: 11/24/2022]
Abstract
Stem cell transplantation technology provides the cell reconstruction of damaged heart a completely new therapy approach. Due to the inappropriate microenvironment such as reactive oxygen radicals caused by ischemic infarct, the survival and retention rates of cell transplantation are not desirable. A thermo sensitive chitosan-vitamin C (CSVC) hydrogel scaffold was developed to reduce oxidative stress injury after myocardial infarction, thereby increasing the cell survival rate of cell transplantation. Vitamin C was conjugated on the chitosan chain by electrostatic adsorption. Compared to chitosan, CSVC complex had a higher solubility and stronger antioxidant property. CSVC hydrogel has suitable gelation time and injectable properties. Scanning electron microscopy showed that chitosan hydrogels had three-dimensional porous structure with irregular pores interconnected throughout the construct. Live/dead and H&E staining results showed that CSVC hydrogel can support the survival and adhesion of cardiomyocytes. Compared with chitosan hydrogel, CSVC hydrogel can clearly improve the survival of cardiomyocytes and reduce the ROS level under H2O2-induced oxidative stress conditions. These results suggest that CSVC hydrogel has the potential to support the survival of cardiomyocytes in tissue engineering.
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Cao R, Liu X, Zhai X, Wang L, Zhou Z. Preparation, investigation and storage application of thymol-chitooligosaccharide complex with enhanced antioxidant and antibacterial properties. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:1561-1568. [PMID: 34403490 DOI: 10.1002/jsfa.11492] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 08/02/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Thymol (Thy) is a natural bioactive agent which possesses various properties and has been widely used in medicine and food industries. However, its poor bioavailability can limit its application. RESULTS In this study, Thy was interacted with chitooligosaccharide (COS) as Thy-COS complex via an ionic crosslinking method using sodium tripolyphosphate as a crosslinker. The characteristics and thermal stability of Thy-COS were evaluated by ultraviolet-visible (UV-vis), Fourier-transform infrared (FTIR) spectroscopy, proton nuclear magnetic resonance (1 H-NMR) and thermogravimetric analysis, and its antioxidant and antibacterial properties were also evaluated. The highest loading capacity of Thy (52.3%) in Thy-COS formed at mass ratio of 1:5. Results indicated the Thy-COS complex was formed mainly by hydrophobic interactions and hydrogen bonds. Upon complexation, the thermal stability, antioxidant and antibacterial activity of Thy were significantly improved. Thy-COS complex was made into a coated film for Nanguo pears and greatly improved its storage quality. Thy-COS delayed the weight loss and softening of Nanguo pears and kept more vitamin-C content (2.12 mg (100 g)-1 ). CONCLUSION In conclusion, Thy-COS was successfully prepared and improved antioxidant and antibacterial properties of Thy, which has great potential in the food industry. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Ruge Cao
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Xinru Liu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Xuqing Zhai
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Lili Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing, China
| | - Zhongkai Zhou
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
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Habib R, Azad AK, Akhlaq M, Al-Joufi FA, Shahnaz G, Mohamed HRH, Naeem M, Almalki ASA, Asghar J, Jalil A, Abdel-Daim MM. Thiolated Chitosan Microneedle Patch of Levosulpiride from Fabrication, Characterization to Bioavailability Enhancement Approach. Polymers (Basel) 2022; 14:polym14030415. [PMID: 35160403 PMCID: PMC8839939 DOI: 10.3390/polym14030415] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 01/07/2022] [Accepted: 01/14/2022] [Indexed: 02/04/2023] Open
Abstract
In this study, a first attempt has been made to deliver levosulpiride transdermally through a thiolated chitosan microneedle patch (TC-MNP). Levosulpiride is slowly and weakly absorbed from the gastrointestinal tract with an oral bioavailability of less than 25% and short half-life of about 6 h. In order to enhance its bioavailability, levosulpiride-loaded thiolated chitosan microneedle patches (LS-TC-MNPs) were fabricated. Firstly, thiolated chitosan was synthesized and characterized by nuclear magnetic resonance (1HNMR) spectroscopy, attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, differential scanning calorimetry (DSC), and X-ray diffraction (XRD). Thiolated chitosan has been used in different drug delivery systems; herein, thiolated chitosan has been used for the transdermal delivery of LS. LS-TC-MNPs were fabricated from different concentrations of thiolated chitosan solution. Furthermore, the levosulpiride-loaded thiolated chitosan microneedle patch (LS-TC-MNP) was characterized by FTIR spectroscopic analysis, scanning electron microscopy (SEM) study, penetration ability, tensile strength, moisture content, patch thickness, and elongation test. LS-TC-MNP fabricated with 3% thiolated chitosan solution was found to have the best tensile strength, moisture content, patch thickness, elongation, drug-loading efficiency, and drug content. Thiolated chitosan is biodegradable, nontoxic and has good absorption and swelling in the skin. LS-TC-MNP-3 consists of 100 needles in 10 rows each with 10 needles. The length of each microneedle was 575 μm; they were pyramidal in shape, with sharp pointed ends and a base diameter of 200 µm. The microneedle patch (LS-TC-MNP-3) resulted in-vitro drug release of 65% up to 48 h, ex vivo permeation of 63.6%, with good skin biocompatibility and enhanced in-vivo pharmacokinetics (AUC = 986 µg/mL·h, Cmax = 24.5 µg/mL) as compared to oral LS dispersion (AUC = 3.2 µg/mL·h, Cmax = 0.5 µg/mL). Based on the above results, LS-TC-MNP-3 seems to be a promising strategy for enhancing the bioavailability of levosulpiride.
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Affiliation(s)
- Rukhshanda Habib
- Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (R.H.); (M.A.); (J.A.)
- Department of Pharmacology, University of Oxford, Mansfield Rd., Oxford OX1 3QT, UK
- Department of Pharmacy, Quaid-I-Azam University, Islamabad 45320, Pakistan;
- Department of Biotechnology, Quaid-I-Azam University, Islamabad 45320, Pakistan;
| | - Abul Kalam Azad
- Pharmaceutical Technology Unit, Faculty of Pharmacy, AIMST University, Bedong 08100, Kedah, Malaysia
- Correspondence: (A.K.A.); (M.M.A.-D.)
| | - Muhammad Akhlaq
- Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (R.H.); (M.A.); (J.A.)
| | - Fakhria A. Al-Joufi
- Department of Pharmacology, College of Pharmacy, Jouf University, Skaka 72341, Saudi Arabia;
| | - Gul Shahnaz
- Department of Pharmacy, Quaid-I-Azam University, Islamabad 45320, Pakistan;
| | - Hanan R. H. Mohamed
- Zoology Department, Faculty of Science, Cairo University, Giza 12613, Egypt;
| | - Muhammad Naeem
- Department of Biotechnology, Quaid-I-Azam University, Islamabad 45320, Pakistan;
| | - Abdulraheem S. A. Almalki
- Department of Chemistry, Faculty of Science, Taif University, P.O. Box 11099, Taif 21974, Saudi Arabia;
| | - Junaid Asghar
- Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (R.H.); (M.A.); (J.A.)
| | - Aamir Jalil
- Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan;
| | - Mohamed M. Abdel-Daim
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
- Correspondence: (A.K.A.); (M.M.A.-D.)
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Ding P, Zou Y, He J, Sun Y, Liu F. Effects of a novel chitosan based macromolecule antioxidant COS-GMMP on the thermo-oxidative aging of styrene-butadiene rubber/silica composites. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2021.109813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Hock N, Racaniello GF, Aspinall S, Denora N, Khutoryanskiy VV, Bernkop‐Schnürch A. Thiolated Nanoparticles for Biomedical Applications: Mimicking the Workhorses of Our Body. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2102451. [PMID: 34773391 PMCID: PMC8728822 DOI: 10.1002/advs.202102451] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 10/13/2021] [Indexed: 05/03/2023]
Abstract
Advances in nanotechnology have generated a broad range of nanoparticles (NPs) for numerous biomedical applications. Among the various properties of NPs are functionalities being related to thiol substructures. Numerous biological processes that are mediated by cysteine or cystine subunits of proteins representing the workhorses of the bodies can be transferred to NPs. This review focuses on the interface between thiol chemistry and NPs. Pros and cons of different techniques for thiolation of NPs are discussed. Furthermore, the various functionalities gained by thiolation are highlighted. These include overall bio- and mucoadhesive, cellular uptake enhancing, and permeation enhancing properties. Drugs being either covalently attached to thiolated NPs via disulfide bonds or being entrapped in thiolated polymeric NPs that are stabilized via inter- and intrachain crosslinking can be released at the diseased tissue or in target cells under reducing conditions. Moreover, drugs, targeting ligands, biological analytes, and enzymes bearing thiol substructures can be immobilized on noble metal NPs and quantum dots for therapeutic, theranostic, diagnostic, biosensing, and analytical reasons. Within this review a concise summary and analysis of the current knowledge, future directions, and potential clinical use of thiolated NPs are provided.
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Affiliation(s)
- Nathalie Hock
- Thiomatrix Forschungs und Beratungs GmbHTrientlgasse 65Innsbruck6020Austria
| | | | - Sam Aspinall
- Reading School of PharmacyUniversity of ReadingWhiteknights PO Box 224, Room 122 (Chemistry and Pharmacy Building)ReadingRG66DXUK
| | - Nunzio Denora
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari “Aldo Moro”Bari70125Italy
| | - Vitaliy V. Khutoryanskiy
- Reading School of PharmacyUniversity of ReadingWhiteknights PO Box 224, Room 122 (Chemistry and Pharmacy Building)ReadingRG66DXUK
| | - Andreas Bernkop‐Schnürch
- Department of Pharmaceutical Technology, Institute of PharmacyUniversity of InnsbruckInnrain 80/82Innsbruck6020Austria
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Gonçalves MM, Lobsinger KL, Carneiro J, Picheth GF, Pires C, Saul CK, Maluf DF, Pontarolo R. Morphological study of electrospun chitosan/poly(vinyl alcohol)/glycerol nanofibres for skin care applications. Int J Biol Macromol 2022; 194:172-178. [PMID: 34863828 DOI: 10.1016/j.ijbiomac.2021.11.195] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 11/15/2021] [Accepted: 11/27/2021] [Indexed: 12/17/2022]
Abstract
This study aimed to evaluate the influence of formulation and procedure parameters in obtaining thick and continuous chitosan/PVA/glycerol nanofibres to be applied in skin care. For that, the polymers were characterized by nuclear magnetic resonance, Fourier-transform infrared spectroscopy, and size-exclusion chromatography. After this, 96 chitosan/PVA/glycerol nanofibre scaffolds were prepared by electrospinning method, using factorial designs. The independent variables were crude and pure chitosan, 2 brands of PVA, 2 needle gauges, high and low polymer concentration, high and low glycerol concentration, and final solution with and without ultrafiltration. Morphological analysis was performed by scanning electron microscopy, atomic force microscopy, and confocal microscopy. The best sample (NF67) presented an average thickness of 268.3 nm, uniform distribution, and high yield. It was obtained at a 1:3.5 (crude chitosan: PVA with lower molecular weight, but more hydrolysed) ratio and lower glycerol concentration, suggesting that the degree of hydrolysis of the PVA is more important than its molecular weight for obtaining better quality nanofibres and that the glycerol also makes the electrospinning process difficult. Thus, it was possible to choose parameters that provide scaffolds that could be applied as a matrix extracellular-like material in wound healing.
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Current trends in chitosan based nanopharmaceuticals for topical vaginal therapies. Int J Biol Macromol 2021; 193:2140-2152. [PMID: 34780894 DOI: 10.1016/j.ijbiomac.2021.11.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 10/03/2021] [Accepted: 11/06/2021] [Indexed: 01/21/2023]
Abstract
Large surface area, rich vascularisation, well defined mucous membrane, balanced pH and relatively low enzymatic activity makes vagina a suitable site for drugs associated with women's health issues like Urinary tract infection (UTI) and vaginal infections. Therapeutic performance of intravaginal dosage forms largely depends on the properties of polymers and drugs. Chitosan (CS) because of its unique physical, chemical, pharmaceutical and biopharmaceutical properties have received a great deal of attention as an essential component in vaginal drug delivery systems. Further the presence of free amino and hydroxyl groups on the chitosan skeleton allows easy derivatization under mild conditions to meet specific application requirements. Moreover, CS-based nanopharmaceuticals like nanoparticles, nanofiber, nanogel, nanofilm, liposomes and micelles are widely studied to improve therapeutic performance of vaginal formulations. However, susceptibility of CS to the acidic pH of vagina, poor loading of hydrophobic drugs, rapid mucosal turn over are the key issues need to be addressed for successful outcomes. In this review, we have discussed the application of CS and CS derivatives in vaginal drug delivery and also highlight the recent progress in chitosan based nanocarrier platforms in terms of their limitations and potentials.
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Liu J, Yu S, Qu W, Jin Z, Zhao K. Self-Assembly of Soluble Chitosan Derivatives Nanoparticles for Vaccine: Synthesis, Characterization and Evaluation. Polymers (Basel) 2021; 13:4097. [PMID: 34883601 PMCID: PMC8659217 DOI: 10.3390/polym13234097] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/13/2021] [Accepted: 11/20/2021] [Indexed: 11/16/2022] Open
Abstract
Herein, a novel chitosan derivative nanoparticle was proposed to function as a delivery carrier. First of all, an improvement was made to the way N-2-hydroxypropyl trimcthyl ammonium chloride chitosan (N-2-HACC) was synthesized. Moreover, the solution to one-step synthesis of N-2-HACC from chitosan (CS) was developed. Different from the previous report, the synthesis process was simplified, and there was a reduction in the amount of 2,3-epoxypropyl trimethyl ammonium chloride (EPTAC) used. With its excellent water solubility maintained, the relatively low degree of substitution was controlled to facilitate the cross-linking reaction. The results obtained from 1H-NMR, FTIR spectroscopy, and XRD indicated a smooth EPTAC onto CS for the formation of N-2-HACC with 59.33% the degree of substitution (DS). According to our results, N-2-HACC could be dissolved in various organic solvents, deionized water, 1% acetic acid aqueous solution, and others at room temperature. Finally, a novel chitosan nanoparticle material was prepared using the self-assembly method with β-glycerophosphate sodium (β-GC), with excellent immune properties achieved, thus providing a new strategy for chitosan self-assembled nanoparticles.
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Affiliation(s)
- Jinbao Liu
- Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion, College of Chemistry and Material Sciences, Heilongjiang University, Harbin 150080, China;
| | - Shuang Yu
- Key Laboratory of Microbiology, College of Heilongjiang Province, School of Life Science, Heilongjiang University, Harbin 150080, China; (S.Y.); (W.Q.)
| | - Wanying Qu
- Key Laboratory of Microbiology, College of Heilongjiang Province, School of Life Science, Heilongjiang University, Harbin 150080, China; (S.Y.); (W.Q.)
| | - Zheng Jin
- Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion, College of Chemistry and Material Sciences, Heilongjiang University, Harbin 150080, China;
- Institute of Nanobiomaterials and Immunology, School of Life Science, Taizhou University, Taizhou 318000, China
| | - Kai Zhao
- Key Laboratory of Microbiology, College of Heilongjiang Province, School of Life Science, Heilongjiang University, Harbin 150080, China; (S.Y.); (W.Q.)
- Institute of Nanobiomaterials and Immunology, School of Life Science, Taizhou University, Taizhou 318000, China
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25
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Luo F, Zeng D, Chen R, Zafar A, Weng L, Wang W, Tian Y, Hasan M, Shu X. PEGylated dihydromyricetin-loaded nanoliposomes coated with tea saponin inhibit bacterial oxidative respiration and energy metabolism. Food Funct 2021; 12:9007-9017. [PMID: 34382988 DOI: 10.1039/d1fo01943k] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The biofilms produced by the aggregation of bacterial colonies are among the major obstacles of host immune system monitoring and antimicrobial treatment. Herein, we report PEGylated dihydromyricetin-loaded liposomes coated with tea saponin grafted on chitosan (TS/CTS@DMY-lips) as an efficient cationic antibacterial agent against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), which is supported by their deep penetration into bacterial biofilms and broad pH-stable release performance of dihydromyricetin (DMY). The successful construction of the drug delivery system relied on tea saponin grafted on chitosan (TS/CTS) via formatted ester bonds or amido bonds as a polyelectrolyte layer of PEGylated dihydromyricetin-loaded liposomes (DMY lips), which achieved controlled release of DMY in weak acidic and neutral physiological environments. The micromorphology of TS/CTS@DMY-lips was observed to resemble dendritic cells with an average size of 266.49 nm, and they had excellent encapsulation efficiency (41.93%), water-solubility and stability in aqueous solution. Besides, TS/CTS@DMY-lips displayed effective destruction of bacterial energy metabolism and cytoplasmic membranes, resulting in the deformation of the cell wall and leaking of cytoplasmic constituents. Compared to free DMY, DMY lips and chitosan-coated dihydromyricetin liposomes (CTS@DMY-lips), TS/CTS@DMY-lips has more thorough killing activity against E. coli and S. aureus, which is related to its excellent sustained release performance of DMY under the protection of the TS/CTS coating.
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Affiliation(s)
- Fan Luo
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, P.R. China.
| | - Dandan Zeng
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, P.R. China.
| | - Renxiang Chen
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, P.R. China.
| | - Ayesha Zafar
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing, 100871, China and Department of Biotechnology, The Institute of Biochemistry, Biotechnology and Bioinformatics, The Islamia University of Bahawalpur, 63100, Pakistan
| | - Ling Weng
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, P.R. China.
| | - Wenxiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, 999077, Hong Kong, China
| | - Yubo Tian
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, P.R. China. and Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
| | - Murtaza Hasan
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, P.R. China. and Department of Biotechnology, The Institute of Biochemistry, Biotechnology and Bioinformatics, The Islamia University of Bahawalpur, 63100, Pakistan
| | - Xugang Shu
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, P.R. China. and Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
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Preparation methods and applications of chitosan nanoparticles; with an outlook toward reinforcement of biodegradable packaging. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104849] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Li C, Fang K, He W, Li K, Jiang Y, Li J. Evaluation of chitosan-ferulic acid microcapsules for sustained drug delivery: Synthesis, characterizations, and release kinetics in vitro. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129353] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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28
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Mohammadi Z, Eini M, Rastegari A, Tehrani MR. Chitosan as a machine for biomolecule delivery: A review. Carbohydr Polym 2021; 256:117414. [DOI: 10.1016/j.carbpol.2020.117414] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/16/2020] [Accepted: 11/16/2020] [Indexed: 01/06/2023]
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29
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Bi S, Kong M, Cheng X, Chen X. Temperature sensitive self-assembling hydroxybutyl chitosan nanoparticles with cationic enhancement effect for multi-functional applications. Carbohydr Polym 2021; 254:117199. [DOI: 10.1016/j.carbpol.2020.117199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/14/2020] [Accepted: 10/06/2020] [Indexed: 10/23/2022]
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30
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Wu H, Luo Y, Xu D, Ke X, Ci T. Low molecular weight heparin modified bone targeting liposomes for orthotopic osteosarcoma and breast cancer bone metastatic tumors. Int J Biol Macromol 2020; 164:2583-2597. [DOI: 10.1016/j.ijbiomac.2020.08.068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 08/04/2020] [Accepted: 08/07/2020] [Indexed: 12/12/2022]
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31
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Pelegrino MT, Pieretti JC, Nakazato G, Gonçalves MC, Moreira JC, Seabra AB. Chitosan chemically modified to deliver nitric oxide with high antibacterial activity. Nitric Oxide 2020; 106:24-34. [PMID: 33098968 DOI: 10.1016/j.niox.2020.10.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 09/10/2020] [Accepted: 10/18/2020] [Indexed: 02/06/2023]
Abstract
The aim of the current study is to report a simple and efficient method to chemically modify chitosan in order to form S-nitroso-chitosan for antibacterial applications. Firstly, commercial chitosan (CS) was modified to form thiolated chitosan (TCS) based on an easy and environmental-friendly method. TCS was featured based on physicochemical and morphological techniques. Results have confirmed that thiol groups in TCS formed after CS's primary amino groups were replaced with secondary amino groups. Free thiol groups in TCS were nitrosated to form S-nitrosothiol moieties covalently bond to the polymer backbone (S-nitroso-CS). Kinetic measurements have shown that S-nitroso-CS was capable of generating NO in a sustained manner at levels suitable for biomedical applications. The antibacterial activities of CS, TCS and S-nitroso-CS were evaluated based on the minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and time-kill curves determined for Escherichia coli, Staphylococcus aureus and Streptococcus mutans. MIC/MBC values reached 25/25, 0.7/0.7 and 3.1/3.1 μg mL-1 for CS/TCS and 3.1/3.1, 0.1/0.2, 0.1/0.2 μg mL-1 for S-nitroso-CS, respectively. Decreased MIC and MBC values have indicated that S-nitroso-CS has higher antibacterial activity than CS and TCS. Time-kill curves have shown that the bacterial cell viability decreased 5-fold for E. coli and 2-fold for S. mutans in comparison to their respective controls, after 0.5 h of incubation with S-nitroso-CS. Together, CS backbone chemically modified with S-nitroso moieties have yielded a polymer capable of generating therapeutic NO concentrations with strong antibacterial effect.
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Affiliation(s)
- Milena T Pelegrino
- Center for Natural and Human Sciences, Universidade Federal do ABC, Santo André, Brazil
| | - Joana C Pieretti
- Center for Natural and Human Sciences, Universidade Federal do ABC, Santo André, Brazil
| | - Gerson Nakazato
- Department of Microbiology, Biology Sciences Center, Londrina State University (UEL), Londrina, Brazil
| | - Marcelly Chue Gonçalves
- Department of Microbiology, Biology Sciences Center, Londrina State University (UEL), Londrina, Brazil
| | - José Carlos Moreira
- Center for Engineering, Modeling and Applied Social Sciences, Universidade Federal do ABC, Santo André, Brazil
| | - Amedea B Seabra
- Center for Natural and Human Sciences, Universidade Federal do ABC, Santo André, Brazil.
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32
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Puri V, Sharma A, Kumar P, Singh I. Thiolation of Biopolymers for Developing Drug Delivery Systems with Enhanced Mechanical and Mucoadhesive Properties: A Review. Polymers (Basel) 2020; 12:E1803. [PMID: 32796741 PMCID: PMC7464630 DOI: 10.3390/polym12081803] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 01/09/2023] Open
Abstract
Biopolymers are extensively used for developing drug delivery systems as they are easily available, economical, readily modified, nontoxic, biodegradable and biocompatible. Thiolation is a well reported approach for enhancing mucoadhesive and mechanical properties of polymers. In the present review article, for the modification of biopolymers different thiolation methods and evaluation/characterization techniques have been discussed in detail. Reported literature on thiolated biopolymers with enhanced mechanical and mucoadhesive properties has been presented conspicuously in text as well as in tabular form. Patents filed by researchers on thiolated polymers have also been presented. In conclusion, thiolation is an easily reproducible and efficient method for customization of mucoadhesive and mechanical properties of biopolymers for drug delivery applications.
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Affiliation(s)
- Vivek Puri
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (V.P.); (A.S.)
- Chitkara University School of Pharmacy, Chitkara University, Himachal Pradesh 174103, India
| | - Ameya Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (V.P.); (A.S.)
- Chitkara University School of Pharmacy, Chitkara University, Himachal Pradesh 174103, India
| | - Pradeep Kumar
- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa;
| | - Inderbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (V.P.); (A.S.)
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33
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Federer C, Kurpiers M, Bernkop-Schnürch A. Thiolated Chitosans: A Multi-talented Class of Polymers for Various Applications. Biomacromolecules 2020; 22:24-56. [PMID: 32567846 PMCID: PMC7805012 DOI: 10.1021/acs.biomac.0c00663] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Various properties of chitosan can be customized by thiolation for very specific needs in a wide range of application areas. Since the discovery of thiolated chitosans, many studies have proven their advantageous characteristics, such as adhesion to biological surfaces, adjustable cross-linking and swelling behavior, controllable drug release, permeation as well as cellular uptake enhancement, inhibition of efflux pumps and enzymes, complexation of metal ions, antioxidative properties, and radical scavenging activity. Simultaneously, these polymers remain biodegradable without increased toxicity. Within this Review, an overview about the different possibilities to covalently attach sulfhydryl ligands to the polymeric backbone of chitosan is given, and the resulting versatile physiochemical properties are discussed in detail. Furthermore, the broad spectrum of applications for thiolated chitosans in science and industry, ranging from their most advanced use in pharmaceutical and medical science over wastewater treatment to the impregnation of textiles, is addressed.
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Affiliation(s)
- Christoph Federer
- Thiomatrix Forschungs-und Beratungs GmbH, Trientlgasse 65, 6020 Innsbruck, Austria.,Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Markus Kurpiers
- Thiomatrix Forschungs-und Beratungs GmbH, Trientlgasse 65, 6020 Innsbruck, Austria.,Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
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34
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Akolade JO, Nasir-Naeem KO, Swanepoel A, Yusuf AA, Balogun M, Labuschagne P. CO2-assisted production of polyethylene glycol / lauric acid microparticles for extended release of Citrus aurantifolia essential oil. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Zhang J, Mi Y, Sun X, Chen Y, Miao Q, Tan W, Li Q, Dong F, Guo Z. Improved Antioxidant and Antifungal Activity of Chitosan Derivatives Bearing Urea Groups. STARCH-STARKE 2020. [DOI: 10.1002/star.201900205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jingjing Zhang
- Key Laboratory of Coastal Biology and Bioresource UtilizationYantai Institute of Coastal Zone ResearchChinese Academy of Sciences Yantai 264003 China
- Center for Ocean Mega‐ScienceChinese Academy of Sciences 7 Nanhai Road Qingdao 266071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yingqi Mi
- Key Laboratory of Coastal Biology and Bioresource UtilizationYantai Institute of Coastal Zone ResearchChinese Academy of Sciences Yantai 264003 China
- Center for Ocean Mega‐ScienceChinese Academy of Sciences 7 Nanhai Road Qingdao 266071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xueqi Sun
- Key Laboratory of Coastal Biology and Bioresource UtilizationYantai Institute of Coastal Zone ResearchChinese Academy of Sciences Yantai 264003 China
- Center for Ocean Mega‐ScienceChinese Academy of Sciences 7 Nanhai Road Qingdao 266071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yuan Chen
- Key Laboratory of Coastal Biology and Bioresource UtilizationYantai Institute of Coastal Zone ResearchChinese Academy of Sciences Yantai 264003 China
- Center for Ocean Mega‐ScienceChinese Academy of Sciences 7 Nanhai Road Qingdao 266071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Qin Miao
- Key Laboratory of Coastal Biology and Bioresource UtilizationYantai Institute of Coastal Zone ResearchChinese Academy of Sciences Yantai 264003 China
- Center for Ocean Mega‐ScienceChinese Academy of Sciences 7 Nanhai Road Qingdao 266071 P. R. China
| | - Wenqiang Tan
- Key Laboratory of Coastal Biology and Bioresource UtilizationYantai Institute of Coastal Zone ResearchChinese Academy of Sciences Yantai 264003 China
- Center for Ocean Mega‐ScienceChinese Academy of Sciences 7 Nanhai Road Qingdao 266071 P. R. China
| | - Qing Li
- Key Laboratory of Coastal Biology and Bioresource UtilizationYantai Institute of Coastal Zone ResearchChinese Academy of Sciences Yantai 264003 China
- Center for Ocean Mega‐ScienceChinese Academy of Sciences 7 Nanhai Road Qingdao 266071 P. R. China
| | - Fang Dong
- Key Laboratory of Coastal Biology and Bioresource UtilizationYantai Institute of Coastal Zone ResearchChinese Academy of Sciences Yantai 264003 China
- Center for Ocean Mega‐ScienceChinese Academy of Sciences 7 Nanhai Road Qingdao 266071 P. R. China
| | - Zhanyong Guo
- Key Laboratory of Coastal Biology and Bioresource UtilizationYantai Institute of Coastal Zone ResearchChinese Academy of Sciences Yantai 264003 China
- Center for Ocean Mega‐ScienceChinese Academy of Sciences 7 Nanhai Road Qingdao 266071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
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