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Ibrahim K, Thwood D, ELgheriani H, Salem M, Elgadiym Z, Zaghdani A, Alhudiri I, Habibi A, Elfahem A, Belaid S, Ermithi O, Almaghrabi M, ELmaryul A, Almadah S, Rayes A, El Meshri SE, El Salabi A, Elzagheid A. Prevalence of multi-drug resistant bacteria in intensive care units at Tripoli University Hospital, Tripoli, Libya. Libyan J Med 2024; 19:2348235. [PMID: 38718270 PMCID: PMC11080667 DOI: 10.1080/19932820.2024.2348235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 04/23/2024] [Indexed: 05/12/2024] Open
Abstract
Among hospitalized patients worldwide, infections caused by multidrug-resistant (MDR) bacteria are a major cause of morbidity and mortality. This study aimed to isolate MDR bacteria from five intensive care units (ICUs) at Tripoli University Hospital (TUH). A prospective cross-sectional study was conducted over a seven-month period (September 2022 to March 2023) across five ICUs at TUH. A total of 197 swabs were collected from Patients', healthcare workers' and ICUs equipment. Samples collected from patients were nasal swabs, oral cavity swabs, hand swabs, sputum specimens, skin swabs, umbilical venous catheter swabs, and around cannula. Swabs collected from health care workers were nasal swabs, whereas ICUs equipment's samples were from endotracheal tubes, oxygen masks, and neonatal incubators. Identification and antimicrobial susceptibility test was confirmed by using MicroScan auto SCAN 4 (Beckman Coulter). The most frequent strains were Gram negative bacilli 113 (57.4%) with the predominance of Acinetobacter baumannii 50/113 (44%) followed by Klebsiella pneumoniae 44/113 (40%) and Pseudomonas aeruginosa 6/113 (5.3%). The total Gram positive bacterial strains isolated were 84 (42.6%), coagulase negative Staphylococci 55 (66%) with MDRs (89%) were the most common isolates followed by Staphylococcus aureus 15 (17.8%). Different antibiotics were used against these isolates; Gram- negative isolates showed high resistance rates to ceftazidime, gentamicin, amikacin and ertapenem. A. baumannii were the most frequent MDROs (94%), and the highest resistance rates in Gram-positive strains were observed toward ampicillin, oxacillin, ampicillin/sulbactam and Cefoxitin, representing 90% of total MDR Gram-positive isolates. ESBL and MRS were identified in most of strains. The prevalence of antibiotic resistance was high for both Gram negative and Gram positive isolates. This prevalence requires strict infection prevention and control intervention, continuous monitoring, implementation of effective antibiotic stewardship, immediate, concerted and collaborative action to monitor its prevalence and spread in the hospital.
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Affiliation(s)
- Khaled Ibrahim
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Dalal Thwood
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Hajer ELgheriani
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Mohamed Salem
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Zaynab Elgadiym
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Ahmed Zaghdani
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Inas Alhudiri
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Abdulraouf Habibi
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Abdurrezagh Elfahem
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Saadeddin Belaid
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Otman Ermithi
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Mahmoud Almaghrabi
- Pediatric Intensive Care Unit, Tripoli University Hospital, Tripoli, Libya
| | - Abubaker ELmaryul
- Medical Intensive Care Unit, Tripoli University Hospital, Tripoli, Libya
| | - Suad Almadah
- Neonatal Intensive Care Unit, Tripoli University Hospital, Tripoli, Libya
| | - Abdunnabi Rayes
- Infection Control Office, Tripoli University Hospital, Tripoli, Libya
| | - Salah Edin El Meshri
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
| | - Allaaeddin El Salabi
- Department of Environmental Health, Faculty of Public Health, University of Benghazi, Benghazi, Libya
| | - Adam Elzagheid
- Department of Microbiology, Libyan Biotechnology Research Center, Tripoli, Libya
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Krihariyani D, Woelansari ED, Haryanto E, Sasongkowati R, Handayati A, Astuti SSE. In Silico Study of the Potential of Brazilein Sappan Wood as a Beta-Lactamase Inhibitor against Extended-Spectrum Beta-Lactamase-Encoding Genes. Malays J Med Sci 2024; 31:107-116. [PMID: 38984238 PMCID: PMC11229569 DOI: 10.21315/mjms2024.31.3.7] [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: 10/07/2023] [Accepted: 11/19/2023] [Indexed: 07/11/2024] Open
Abstract
Background Infectious illnesses are a serious health concern in Indonesia. Widespread use of self-medication by the community increases the risk of developing multi-drug resistant (MDR) bacteria. This study assessed the potential of sappan wood as an inhibitor of extended-spectrum beta-lactamase (ESBL) encoded by blaSHV, blaTEM and blaCTX-M genes. Method In silico testing was conducted to develop an effective and economical starting strategy. Thereby, this study significantly advances the development of novel treatments to combat antibiotic resistance. Using clavulanic acid as the benchmark medicine, the potency of the beta-lactamase inhibitor brazilein was predicted. Using the Molegro Virtual Docker computer tool, docking was performed to estimate the chemical and physical properties of the compounds, as well as the biological activity of brazilein toward the required receptor. The receptors used were SHV-1 beta-lactamase, PDB code: 2H0T; TEM-1 beta-lactamase, PDB code: 4OQG and CTX-M-14 beta-lactamase, PDB code: 6VHS. Data analysis was performed by comparing the binding energies of the docking results between the ligands and the target receptor. The more stable the bond that formed between the ligand and the target receptor, the lower the bond energy. Results The in silico test results on the blaSHV gene were as follows: binding energy of ligand MA4_400[A] = -100.699, brazilein = -82.206, clavulanic acid = -79.3704; in the blaTEM gene: ligand bond energy 2UL_301[B] = -107.681, brazilein = -82.0296, clavulanic acid = -103.3; in the blaCTX-M gene: X57_301[A] ligand bond energy = -86.6197, and brazilein = -88.1586, clavulanic acid = -101.933. Conclusion The findings of this study demonstrate the significant potential of brazilein sappan wood to block the beta-lactamase activity of blaCTX-M.
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Affiliation(s)
- Dwi Krihariyani
- Department of Medical Laboratory Technology, Politeknik Kesehatan Kementerian Kesehatan Surabaya, East Java, Indonesia
| | - Evy Diah Woelansari
- Department of Medical Laboratory Technology, Politeknik Kesehatan Kementerian Kesehatan Surabaya, East Java, Indonesia
| | - Edy Haryanto
- Department of Medical Laboratory Technology, Politeknik Kesehatan Kementerian Kesehatan Surabaya, East Java, Indonesia
| | - Retno Sasongkowati
- Department of Medical Laboratory Technology, Politeknik Kesehatan Kementerian Kesehatan Surabaya, East Java, Indonesia
| | - Anik Handayati
- Department of Medical Laboratory Technology, Politeknik Kesehatan Kementerian Kesehatan Surabaya, East Java, Indonesia
| | - Sri Sulami Endah Astuti
- Department of Medical Laboratory Technology, Politeknik Kesehatan Kementerian Kesehatan Surabaya, East Java, Indonesia
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Li S, Gu B, Meng J, Zhu J, Wang J, Wang W, Ding J, Qiu T, Wang W, Liu J, Wu Y, Li K. TCM formula for trauma treatment screening and its role of promoting infectious wound coalescence investigating. Res Vet Sci 2024; 170:105178. [PMID: 38402660 DOI: 10.1016/j.rvsc.2024.105178] [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: 12/17/2022] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/27/2024]
Abstract
In pet clinics, the number of cases using trauma drugs accounts for >10% of the total number of cases, and most wounds are healing by second intention. The prolongation of wound healing time causes inconvenience and burden to pets and pet owners. Therefore, how to reduce wound healing time and achieve maximum recovery of tissue function and aesthetics is one of the focuses of veterinary clinical practice. Wound suppuration caused by Staphylococcus aureus and Pseudomonas aeruginosa is the main cause of delaying wound healing. Clinically, available antimicrobial treatments are almost exhausted due to the production of large numbers of resistant bacteria. At present, there are no bacteria resistant to traditional Chinese medicine (TCM), which makes TCM have the potential to become an effective drug for the treatment of bacterial infections, so the use of TCM in the treatment of traumatic infections has broad prospects. Based on the characteristics of infection syndrome, three different prescriptions were formulated in our laboratory, and the most effective prescription and dosage form was screened and named Lianrong Healing Cream (LRHC). The results showed that LRHC regulated the expression of fibroblast growth factor-2 (FGF-2), epidermal growth factor-1 (EGF-1), transforming growth factor-β (TGF-β) and vascular endothelial growth factor-1 (VEGF-1) genes in wound tissues and fibroblasts, thereby accelerating wound healing and repairing wound appearance and function. The results of this study may be help to develop TCM formulation for traumatic infections.
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Affiliation(s)
- Siya Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Bolin Gu
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jinwu Meng
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jinyue Zhu
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jinli Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Weiran Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jinxue Ding
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Tianxin Qiu
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Wenjia Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jiaguo Liu
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Yi Wu
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Kun Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety and Traditional Chinese Veterinary medicine research Center, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
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Hassan MA, Abd El-Aziz S, Nabil-Adam A, Tamer TM. Formulation of novel bioactive gelatin inspired by cinnamaldehyde for combating multi-drug resistant bacteria: Characterization, molecular docking, pharmacokinetic analyses, and in vitro assessments. Int J Pharm 2024; 652:123827. [PMID: 38253268 DOI: 10.1016/j.ijpharm.2024.123827] [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: 10/24/2023] [Revised: 01/13/2024] [Accepted: 01/19/2024] [Indexed: 01/24/2024]
Abstract
This study set out to formulate antibacterial and antioxidant gelatin boosted by cinnamaldehyde for combating multi-drug resistant bacteria previously obtained from chronic wounds. Towards this end, gelatin amine groups were conjugated with carbonyl groups of cinnamaldehyde, producing cinnamyl-gelatin Schiff bases. The physicochemical attributes of cinnamyl-gelatin Schiff bases were probed concerning alterations in chemical structures and microstructures compared to native gelatin. Besides, cinnamyl-gelatin Schiff bases exhibited higher thermal stability than gelatin, with a diminishing in solubility due to increases in hydrophobicity features. Interestingly, cinnamyl-gelatin derivatives exerted antibacterial activities versus multi-drug resistant Gram-negative and Gram-positive bacteria, showing maximum growth inhibition at the highest concentration of cinnamaldehyde incorporated into gelatin. The scavenging activities of gelatin against DPPH and ABTS•+ were promoted in cinnamyl-gelatin derivatives from 11.93 ± 0.6 % to 49.9 ± 2.5 % and 12.54 ± 0.63 % to 49.9 ± 3.12 %, respectively. Remarkably, cinnamyl-gelatin derivatives induced the proliferation of fibroblast cells, implying their prospective applications in tissue engineering. Molecular docking and pharmacokinetic investigations disclosed the potential antibacterial mechanisms of cinnamyl-gelatin derivatives alongside their biopharmaceutical applications. Altogether, these findings suggest that cinnamyl-gelatin derivatives could be utilized to tailor antibacterial-free antibiotics and antioxidant wound dressings against virulent bacteria to promote chronic wound recovery.
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Affiliation(s)
- Mohamed A Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934 Alexandria, Egypt.
| | - Sarah Abd El-Aziz
- Polymer Materials Research Department, Advanced Technologies, and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934 Alexandria, Egypt
| | - Asmaa Nabil-Adam
- Marine Biotechnology and Natural Products Laboratory, National Institute of Oceanography & Fisheries, Cairo 11516, Egypt
| | - Tamer M Tamer
- Polymer Materials Research Department, Advanced Technologies, and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934 Alexandria, Egypt.
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Chen Y, Qian H, Peng D, Jiang Y, Liu Q, Tan Y, Feng L, Cheng B, Li G. Antimicrobial peptide-modified AIE visual composite wound dressing for promoting rapid healing of infected wounds. Front Bioeng Biotechnol 2024; 11:1338172. [PMID: 38283168 PMCID: PMC10811172 DOI: 10.3389/fbioe.2023.1338172] [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: 11/14/2023] [Accepted: 12/18/2023] [Indexed: 01/30/2024] Open
Abstract
Wound infection is a major problem faced during wound healing. Therefore, it is necessary to develop wound dressings with excellent antimicrobial properties. Here, a smart response system of PVA-TPE/HA-AMP/SF/ALG wound dressing was prepared by a combination of chemical cross-linking and freeze-drying methods. We grafted AMP onto HA to endow the wound dressing with bacterial resistance and slow release of AMP. At the same time, the system detects bacterial activity in real time for precise antimicrobial activity (through the use of PVA-TPE) and modulates inflammation to reduce bacterial infection (through the use of AMP). In addition, the PVA-TPE/HA-AMP/SF/ALG wound dressing has a good three-dimensional mesh structure, which promotes cell proliferation, enhances collagen deposition and angiogenesis, and thus effectively promotes rapid healing of infected wounds. Moreover, it can induce the expression of inflammatory factors such as VEGF, TNF-α, IFN-γ, IL-4 and TGF-β1 in infected wounds through the Wnt/CAMK/p-PKC signaling pathway, inhibit inflammatory responses, promote wound healing and reduce scar formation. Therefore, the PVA-TPE/HA-AMP/SF/ALG wound dressing smart response system shows great promise in infected wound healing.
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Affiliation(s)
- Yi Chen
- Department of Cadre Ward, General Hospital of Southern Theater Command, Guangzhou, China
| | - Hongjin Qian
- Department of Cadre Ward, General Hospital of Southern Theater Command, Guangzhou, China
| | - Dandan Peng
- Department of Oncology, General Hospital of Southern Theater Command, Guangzhou, China
| | - Yan Jiang
- Department of Cadre Ward, General Hospital of Southern Theater Command, Guangzhou, China
| | - Qiaolin Liu
- Department of Oncology, General Hospital of Southern Theater Command, Guangzhou, China
| | - Yan Tan
- Department of Cadre Ward, General Hospital of Southern Theater Command, Guangzhou, China
| | - Longbao Feng
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Guangdong Provincial Engineering and Technological Research Centre for Drug Carrier Development, Jinan University, Guangzhou, China
| | - Biao Cheng
- Department of Burns and Plastic Surgery, General Hospital of Southern Theater Command, Guangzhou, China
| | - Guilan Li
- Department of Neurosurgery, General Hospital of Southern Theater Command, Guangzhou, China
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Nakipoglu M, Özkabadayı Y, Karahan S, Tezcaner A. Bilayer wound dressing composed of asymmetric polycaprolactone membrane and chitosan-carrageenan hydrogel incorporating storax balsam. Int J Biol Macromol 2024; 254:128020. [PMID: 37956814 DOI: 10.1016/j.ijbiomac.2023.128020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/15/2023]
Abstract
A comprehensive approach is needed to develop multifunctional wound dressing that is simple yet efficient. In this work, Liquidambar orientalis Mill. storax loaded hydroxyethyl chitosan (HECS)-carrageenan (kC) based hydrogel (HECS-kC) and polydopamine coated asymmetric polycaprolactone membrane (PCL-DOP) were used to develop a multifunctional and modular bilayer wound dressing. Asymmetric PCL-DOP membrane was prepared by non-solvent induced phase separation (NIPS) followed by polydopamine coating and demonstrated an excellent barrier against bacteria while allowing permeability for 5.45 ppm dissolved‑oxygen and 2130 g/m2 water vapor transmission in 24 h in addition to 805 kPa tensile strength. Storax loaded HECS-kC hydrogel, on the other hand, demonstrated a pH-responsive degradation and swelling to provide necessary conditions to facilitate wound healing. The hydrogels showed stretchability above 140 %, mild adhesive strength on sheep skin and PCL-DOP membrane, while the storax incorporation enhanced antibacterial and antioxidant activity. Furthermore, rat full-thickness skin defect model showed that the developed bilayer wound dressing could significantly facilitate wound healing compared to Tegaderm™ and control groups. This study shows that the bilayered wound dressing has the potential to be used as a simple and effective wound care system.
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Affiliation(s)
- Mustafa Nakipoglu
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey; Department of Molecular Biology and Genetics, Bartin University, Bartin 74100, Turkey.
| | - Yasin Özkabadayı
- Department of Histology, Kırıkkale University, Kırıkkale 71450, Turkey.
| | - Siyami Karahan
- Department of Histology, Kırıkkale University, Kırıkkale 71450, Turkey.
| | - Ayşen Tezcaner
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey; Department of Engineering Sciences, Middle East Technical University, Ankara 06800, Turkey.
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Fang Y, Lin Y, Ou Y, Wang L, Chen J, Sun C, Wen Y, Liu H. Antibacterial and hemostatic chitin sponge directly constructed from Pleurotus Eryngii via top-down approach. Int J Biol Macromol 2024; 254:127902. [PMID: 37939752 DOI: 10.1016/j.ijbiomac.2023.127902] [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: 04/21/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 11/10/2023]
Abstract
Chitin, the second most abundant polysaccharide on earth, possesses unique characteristics, including biosafety, biodegradability, and procoagulant activity, making it an attractive material for hemostasis. However, the conventional bottom-up construction of chitin-based materials is intricate and time-consuming. In this study, we have developed a top-down strategy to prepare a 3D porous chitin-based hemostatic sponge with exceptional hemostatic properties and antibacterial activity, directly from the spongy Pleurotus eryngii. The top-down method involves deproteinization, in situ quaternization, and tannin acid crosslinking. The obtained sponge has an interconnected microporous structure with high porosity (89.7 ± 3.2 %), endowing it with high water absorption (2047 ± 105 %) and rapid water-triggered shape-memory behavior (< 2 s). The sponge exhibits superior blood coagulant activity and outperforms standard medical gauze, gelatin sponge, and chitosan sponge in both topical artery and non-compressive liver puncture wound. In addition, the sponge exhibited significant antibacterial activity against both gram-positive Staphylococcus aureus and gram-negative Escherichia coli. In summary, this study provides a straightforward and practical approach for constructing an antibacterial and hemostatic chitin sponge that could be a valuable option for treating bleeding wounds.
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Affiliation(s)
- Yan Fang
- College of Chemistry and Materials Science, Fujian Normal University, Fujian 350007, China.
| | - Yukai Lin
- College of Chemistry and Materials Science, Fujian Normal University, Fujian 350007, China
| | - Yanjing Ou
- Fujian Key Laboratory of Oral Diseases, Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, China
| | - Linyu Wang
- College of Chemistry and Materials Science, Fujian Normal University, Fujian 350007, China
| | - Jiang Chen
- Fujian Key Laboratory of Oral Diseases, Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, China.
| | - Caixia Sun
- Fujian Chuanzheng Communications College, Fuzhou 350007, China
| | - Yunxiang Wen
- College of Chemistry and Materials Science, Fujian Normal University, Fujian 350007, China
| | - Haiqing Liu
- College of Chemistry and Materials Science, Fujian Normal University, Fujian 350007, China.
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Sezen S, Ertuğrul MS, Balpınar Ö, Bayram C, Özkaraca M, Okkay IF, Hacımüftüoğlu A, Güllüce M. Assessment of antimicrobial activity and In Vitro wound healing potential of ZnO nanoparticles synthesized with Capparis spinosa extract. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:117609-117623. [PMID: 37872332 DOI: 10.1007/s11356-023-30417-8] [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: 07/26/2023] [Accepted: 10/08/2023] [Indexed: 10/25/2023]
Abstract
Agents that will accelerate wound healing maintain their clinical importance in all aspects. The aim of this study is to determine the antimicrobial activity of zinc oxide nanoparticles (ZnO NPs) ZnO nanoparticles obtained by green synthesis from Capparis spinosa L. extract and their effect on in vitro wound healing. ZnO NPs were synthesized and characterized using Capparis spinosa L. extract. ZnO NPs were tested against nine ATCC-coded pathogen strains to determine antimicrobial activity. The effects of different doses (0.0390625-20 µg/mL) of NPs on cell viability were determined by MTT assay. The effect of ZnO NPs doses (0.0390625 µg/mL, 0.078125 µg/mL, 0.15625 µg/mL, 0.3125 µg/mL, 0.625 µg/mL, 1.25 µg/mL) that increase proliferation and migration on wound healing was investigated in an in vitro wound experiment. Cell culture medium obtained from the in vitro wound assay was used for biochemical analysis, and plate alcohol-fixed cells were used for immunohistochemical staining. It was determined that NPs formed an inhibition zone against the tested Gram-positive bacteria. The ZnO NPs doses determined in the MTT test provided faster wound closure in in-vitro conditions compared to the DMSO group. Biochemical analyses showed that inflammation and oxidative status decreased, while antioxidant levels increased in ZnO NPs groups. Immunohistochemical analyses showed increased expression levels of Bek/FGFR2, IGF, and TGF-β associated with wound healing. The findings reveal the antimicrobial effect of ZnO nanoparticles obtained using Capparis spinosa L. extract in vitro and their potential applications in wound healing.
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Affiliation(s)
- Selma Sezen
- Department of Medical Pharmacology, Faculty of Medicine, Agri Ibrahim Cecen University, Agri, Türkiye
| | | | - Özge Balpınar
- Hemp Research Institute, Ondokuz Mayıs University, Samsun, Türkiye
| | - Cemil Bayram
- Department of Pharmacology and Toxicology, Faculty of Veterinary, Ataturk University, Erzurum, Türkiye
| | - Mustafa Özkaraca
- Department of Pathology, Faculty of Veterinary, Sivas Cumhuriyet University, Sivas, Türkiye
| | - Irmak Ferah Okkay
- Department of Pharmacology, Faculty of Pharmacy, Ataturk University, Erzurum, Türkiye
| | - Ahmet Hacımüftüoğlu
- Department of Medical Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Türkiye
| | - Medine Güllüce
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Türkiye
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Saad M, El-Samad LM, Gomaa RA, Augustyniak M, Hassan MA. A comprehensive review of recent advances in silk sericin: Extraction approaches, structure, biochemical characterization, and biomedical applications. Int J Biol Macromol 2023; 250:126067. [PMID: 37524279 DOI: 10.1016/j.ijbiomac.2023.126067] [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: 02/19/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023]
Abstract
Silks are natural polymers that have been widely used for centuries. Silk consists of a filament core protein, termed fibroin, and a glue-like coating substance formed of sericin (SER) proteins. This protein is extracted from the silkworm cocoons (particularly Bombyx mori) and is mainly composed of amino acids like glycine, serine, aspartic acid, and threonine. Silk SER can be obtained using numerous methods, including enzymatic extraction, high-temperature, autoclaving, ethanol precipitation, cross-linking, and utilizing acidic, alkali, or neutral aqueous solutions. Given the versatility and outstanding properties of SER, it is widely fabricated to produce sponges, films, and hydrogels for further use in diverse biomedical applications. Hence, many authors reported that SER benefits cell proliferation, tissue engineering, and skin tissue restoration thanks to its moisturizing features, antioxidant and anti-inflammatory properties, and mitogenic effect on mammalian cells. Remarkably, SER is used in drug delivery depending on its chemical reactivity and pH-responsiveness. These unique features of SER enhance the bioactivity of drugs, facilitating the fabrication of biomedical materials at nano- and microscales, hydrogels, and conjugated molecules. This review thoroughly outlines the extraction techniques, biological properties, and respective biomedical applications of SER.
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Affiliation(s)
- Marwa Saad
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Lamia M El-Samad
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Rehab A Gomaa
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Maria Augustyniak
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Bankowa 9, 40-007 Katowice, Poland
| | - Mohamed A Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934 Alexandria, Egypt.
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Hassan MA, Elmageed GMA, El-Qazaz IG, El-Sayed DS, El-Samad LM, Abdou HM. The Synergistic Influence of Polyflavonoids from Citrus aurantifolia on Diabetes Treatment and Their Modulation of the PI3K/AKT/FOXO1 Signaling Pathways: Molecular Docking Analyses and In Vivo Investigations. Pharmaceutics 2023; 15:2306. [PMID: 37765275 PMCID: PMC10535482 DOI: 10.3390/pharmaceutics15092306] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/05/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
This study was aimed at probing the modulatory influence of polyflavonoids extracted from Citrus aurantifolia, lemon peel extract (LPE-polyflavonoids), on attenuating diabetes mellitus (DM) and its complications. HPLC investigations of the LPE exhibited the incidence of five flavonoids, including diosmin, biochanin A, hesperidin, quercetin, and hesperetin. The in silico impact on ligand-phosphatidylinositol 3-kinase (PI3K) interaction was investigated in terms of polyflavonoid class to explore the non-covalent intakes and binding affinity to the known protein active site. The drug likeness properties and pharmacokinetic parameters of the LPE-polyflavonoids were investigated to assess their bioavailability in relation to Myricetin as a control. Remarkably, the molecular docking studies demonstrated a prominent affinity score of all these agents together with PI3K, implying the potency of the extract to orchestrate PI3K, which is the predominant signal for lessening the level of blood glucose. To verify these findings, in vivo studies were conducted, utilizing diabetic male albino rats treated with LPE-polyflavonoids and other groups treated with hesperidin and diosmin as single flavonoids. Our findings demonstrated that the LPE-polyflavonoids significantly ameliorated the levels of glucose, insulin, glycogen, liver function, carbohydrate metabolizing enzymes, G6Pd, and AGEs compared to the diabetic rats and those exposed to hesperidin and diosmin. Furthermore, the LPE-polyflavonoids regulated the TBARS, GSH, CAT, TNF-α, IL-1β, IL-6, and AFP levels in the pancreatic and hepatic tissues, suggesting their antioxidant and anti-inflammatory properties. In addition, the pancreatic and hepatic GLUT4 and GLUT2 were noticeably increased in addition to the pancreatic p-AKT in the rats administered with the LPE-polyflavonoids compared to the other diabetic rats. Remarkably, the administration of LPE-polyflavonoids upregulated the expression of the pancreatic and hepatic PI3K, AMPK, and FOXO1 genes, emphasizing the efficiency of the LPE in orchestrating all the signaling pathways necessitated to reduce the diabetes mellitus. Notably, the histopathological examinations of the pancreatic and hepatic tissues corroborated the biochemical results. Altogether, our findings accentuated the potential therapeutic role of LPE-polyflavonoids in controlling diabetes mellitus.
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Affiliation(s)
- Mohamed A. Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City 21934, Egypt
| | - Ghada M. Abd Elmageed
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria 21321, Egypt; (G.M.A.E.); (I.G.E.-Q.); (L.M.E.-S.)
| | - Ibtehal G. El-Qazaz
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria 21321, Egypt; (G.M.A.E.); (I.G.E.-Q.); (L.M.E.-S.)
| | - Doaa S. El-Sayed
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt;
| | - Lamia M. El-Samad
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria 21321, Egypt; (G.M.A.E.); (I.G.E.-Q.); (L.M.E.-S.)
| | - Heba M. Abdou
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria 21321, Egypt; (G.M.A.E.); (I.G.E.-Q.); (L.M.E.-S.)
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Bakare OO, Gokul A, Niekerk LA, Aina O, Abiona A, Barker AM, Basson G, Nkomo M, Otomo L, Keyster M, Klein A. Recent Progress in the Characterization, Synthesis, Delivery Procedures, Treatment Strategies, and Precision of Antimicrobial Peptides. Int J Mol Sci 2023; 24:11864. [PMID: 37511621 PMCID: PMC10380191 DOI: 10.3390/ijms241411864] [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: 06/27/2023] [Revised: 07/20/2023] [Accepted: 07/22/2023] [Indexed: 07/30/2023] Open
Abstract
Infectious diseases are constantly evolving to bypass antibiotics or create resistance against them. There is a piercing alarm for the need to improve the design of new effective antimicrobial agents such as antimicrobial peptides which are less prone to resistance and possess high sensitivity. This would guard public health in combating and overcoming stubborn pathogens and mitigate incurable diseases; however, the emergence of antimicrobial peptides' shortcomings ranging from untimely degradation by enzymes to difficulty in the design against specific targets is a major bottleneck in achieving these objectives. This review is aimed at highlighting the recent progress in antimicrobial peptide development in the area of nanotechnology-based delivery, selectivity indices, synthesis and characterization, their doping and coating, and the shortfall of these approaches. This review will raise awareness of antimicrobial peptides as prospective therapeutic agents in the medical and pharmaceutical industries, such as the sensitive treatment of diseases and their utilization. The knowledge from this development would guide the future design of these novel peptides and allow the development of highly specific, sensitive, and accurate antimicrobial peptides to initiate treatment regimens in patients to enable them to have accommodating lifestyles.
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Affiliation(s)
- Olalekan Olanrewaju Bakare
- Department of Biochemistry, Faculty of Basic Medical Sciences, Olabisi Onabanjo University, Sagamu 2002, Nigeria
| | - Arun Gokul
- Department of Plant Sciences, Qwaqwa Campus, University of the Free State, Phuthadithjaba 9866, South Africa
| | - Lee-Ann Niekerk
- Environmental Biotechnology Laboratory, Department of Biotechnology, University of the Western Cape, Bellville 7535, South Africa
| | - Omolola Aina
- Plant Omics Laboratory, Department of Biotechnology, University of the Western Cape, Bellville 7535, South Africa
| | - Ademola Abiona
- Department of Biochemistry, Faculty of Basic Medical Sciences, Olabisi Onabanjo University, Sagamu 2002, Nigeria
| | - Adele Mariska Barker
- Environmental Biotechnology Laboratory, Department of Biotechnology, University of the Western Cape, Bellville 7535, South Africa
| | - Gerhard Basson
- Environmental Biotechnology Laboratory, Department of Biotechnology, University of the Western Cape, Bellville 7535, South Africa
| | - Mbukeni Nkomo
- Department of Botany, H13 Botany Building, University of Zululand, Private Bag X1001, KwaDlangezwa 3886, South Africa
| | - Laetitia Otomo
- Department of Plant Sciences, Qwaqwa Campus, University of the Free State, Phuthadithjaba 9866, South Africa
| | - Marshall Keyster
- Environmental Biotechnology Laboratory, Department of Biotechnology, University of the Western Cape, Bellville 7535, South Africa
| | - Ashwil Klein
- Plant Omics Laboratory, Department of Biotechnology, University of the Western Cape, Bellville 7535, South Africa
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12
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Helmy AK, Sidkey NM, El-Badawy RE, Hegazi AG. Emergence of microbial infections in some hospitals of Cairo, Egypt: studying their corresponding antimicrobial resistance profiles. BMC Infect Dis 2023; 23:424. [PMID: 37349674 DOI: 10.1186/s12879-023-08397-4] [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: 04/01/2023] [Accepted: 06/12/2023] [Indexed: 06/24/2023] Open
Abstract
BACKGROUND Antimicrobial resistance is one of the ten major public health threats facing humanity, especially in developing countries. Identification of the pathogens responsible for different microbial infections and antimicrobial resistance patterns are important to help clinicians to choose the correct empirical drugs and provide optimal patient care. METHODS During the period from November 2020 to January 2021, one hundred microbial isolates were collected randomly from different specimens from some hospitals in Cairo, Egypt. Sputum and chest specimens were from COVID-19 patients. Antimicrobial susceptibility testing was performed according to CLSI guidelines. RESULTS Most microbial infections were more common in males and in elderly people over 45 years of age. They were caused by Gram-negative, Gram-positive bacteria, and yeast isolates that represented 69%, 15%, and 16%, respectively. Uropathogenic Escherichia coli (35%) were the most prevalent microbial isolates and showed high resistance rates towards penicillin, ampicillin, and cefixime, followed by Klebsiella spp. (13%) and Candida spp. (16%). Of all microbial isolates, Acinetobacter spp., Serratia spp., Hafnia alvei, and Klebsiella ozaenae were extremely multidrug-resistant (MDR) and have resisted all antibiotic classes used, except for glycylcycline, in varying degrees. Acinetobacter spp., Serratia spp., and Candida spp. were secondary microbial infections in COVID-19 patients, while H. alvei was a bloodstream infection isolate and K. ozaenae was recorded in most infections. Moreover, about half of Staphylococcus aureus strains were MRSA isolates and reported low rates of resistance to glycylcycline and linezolid. In comparison, Candida spp. showed high resistance rates between 77 and 100% to azole drugs and terbinafine, while no resistance rate towards nystatin was reported. Indeed, glycylcycline, linezolid, and nystatin were considered the drugs of choice for the treatment of MDR infections. CONCLUSION The prevalence of antimicrobial resistance in some Egyptian hospitals was high among Gram-negative, Gram-positive bacteria, and candida spp. The high resistance pattern -especially in secondary microbial infections in COVID-19 patients- to most antibiotics used is a matter of great concern, portends an inevitable catastrophe, and requires continuous monitoring to avoid the evolution of new generations.
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Affiliation(s)
- Asmaa K Helmy
- Botany and Microbiology Department, Faculty of Science for Girls, Al-Azhar University, Cairo, Egypt.
| | - Nagwa M Sidkey
- Botany and Microbiology Department, Faculty of Science for Girls, Al-Azhar University, Cairo, Egypt
| | | | - Ahmed G Hegazi
- Zoonotic Diseases Department, National Research Centre, Dokki, Giza, Egypt
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13
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Ahmed EF, Rasmi AH, Darwish AMA, Gad GFM. Prevalence and resistance profile of bacteria isolated from wound infections among a group of patients in upper Egypt: a descriptive cross-sectional study. BMC Res Notes 2023; 16:106. [PMID: 37337258 DOI: 10.1186/s13104-023-06379-y] [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: 02/01/2023] [Accepted: 06/06/2023] [Indexed: 06/21/2023] Open
Abstract
AIM This cross-sectional survey aimed to identify aerobic bacteria, antimicrobial resistance, and multi-drug resistance profiles of bacteria isolated from different wound infections among a group of Egyptian patients. RESULTS Of 120 positive samples, 170 isolates were identified. Polymicrobial infections were determined in 55% of samples. The dominant Gram-positive isolated strains were Staphylococcus aureus, especially from wound infections because of accidents (71.8%). Piperacillin, methicillin, ampicillin/sulbactam, and amoxicillin/clavulanic acid were all highly resistant to S. aureus and Coagulase-negative Staphylococci. The prevalence of methicillin-resistant S. aureus in wound infections was 89.9%. S. aureus showed superior sensitivity to vancomycin (85.3%) and linezolid (81.3%). The highest prevalence of Gram-negative isolates was for Pseudomonas aeruginosa (40%), which was highly sensitive to ciprofloxacin (79.2%) and highly resistant to levofloxacin (83.3%). Several isolates revealed a multi-drug resistance profile (52.4%). The overall MDR rate of Gram-positive and Gram-negative isolates were 50% and 54.9%, respectively. CONCLUSION The prevalence of MRSA isolated from various wound infections and MDR is a warning issue in Upper Egypt. It should implement a health education strategy and hygiene measures to prevent the spread of wound infection-causing organisms in the community.
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Affiliation(s)
- Eman Farouk Ahmed
- Assistant Professor of Microbiology and Immunology, Microbiology and Immunology Department, Faculty of Pharmacy, Sohag University, 82524, Province, Sohag, Egypt.
| | - Asia Helmi Rasmi
- Teaching assistant of Microbiology and Immunology, Microbiology and Immunology Department, Faculty of Pharmacy, Deraya University, Elminya, Egypt
| | - Abdou M A Darwish
- Professor of Plastic and Reconstructive Surgery, Plastic and Reconstructive Surgery Department, Faculty of Medicine, Minia University, Elminya, Egypt
| | - Gamal Fadl Mahmoud Gad
- Professor at Microbiology and Immunology, Microbiology and Immunology Department, Faculty of Pharmacy, Minia University, Elminya, Egypt
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14
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Moreno AI, Orozco Y, Ocampo S, Malagón S, Ossa A, Peláez-Vargas A, Paucar C, Lopera A, Garcia C. Effects of Propolis Impregnation on Polylactic Acid (PLA) Scaffolds Loaded with Wollastonite Particles against Staphylococcus aureus, Staphylococcus epidermidis, and Their Coculture for Potential Medical Devices. Polymers (Basel) 2023; 15:2629. [PMID: 37376275 DOI: 10.3390/polym15122629] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/09/2023] [Accepted: 05/13/2023] [Indexed: 06/29/2023] Open
Abstract
Several diseases and injuries cause irreversible damage to bone tissues, which may require partial or total regeneration or replacement. Tissue engineering suggests developing substitutes that may contribute to the repair or regeneration process by using three-dimensional lattices (scaffolds) to create functional bone tissues. Herein, scaffolds comprising polylactic acid and wollastonite particles enriched with propolis extracts from the Arauca region of Colombia were developed as gyroid triply periodic minimal surfaces using fused deposition modeling. The propolis extracts exhibited antibacterial activity against Staphylococcus aureus (ATCC 25175) and Staphylococcus epidermidis (ATCC 12228), which cause osteomyelitis. The scaffolds were characterized using scanning electron microscopy, Fourier-transform infrared spectroscopy, differential scanning calorimetry, contact angle, swelling, and degradation. Their mechanical properties were assessed using static and dynamic tests. Cell viability/proliferation assay was conducted using hDP-MSC cultures, while their bactericidal properties against monospecies cultures (S. aureus and S. epidermidis) and cocultures were evaluated. The wollastonite particles did not affect the physical, mechanical, or thermal properties of the scaffolds. The contact angle results showed that there were no substantial differences in the hydrophobicity between scaffolds with and without particles. Scaffolds containing wollastonite particles suffered less degradation than those produced using PLA alone. A representative result of the cyclic tests at Fmax = 450 N showed that the maximum strain reached after 8000 cycles is well below the yield strain (i.e., <7.5%), thereby indicating that even under these stringent conditions, these scaffolds will be able to work properly. The scaffolds impregnated with propolis showed a lower % of cell viability using hDP-MSCs on the 3rd day, but these values increased on the 7th day. These scaffolds exhibited antibacterial activity against the monospecies cultures of S. aureus and S. epidermidis and their cocultures. The samples without propolis loads did not show inhibition halos, whereas those loaded with EEP exhibited halos of 17.42 ± 0.2 mm against S. aureus and 12.9 ± 0.5 mm against S. epidermidis. These results made the scaffolds possible bone substitutes that exert control over species with a proliferative capacity for the biofilm-formation processes required for typical severe infectious processes.
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Affiliation(s)
- Ana Isabel Moreno
- Grupo de Cerámicos y Vítreos, Universidad Nacional de Colombia sede Medellín, Medellín 050034, Colombia
| | - Yeison Orozco
- Grupo de Cerámicos y Vítreos, Universidad Nacional de Colombia sede Medellín, Medellín 050034, Colombia
| | - Sebastián Ocampo
- Grupo de Cerámicos y Vítreos, Universidad Nacional de Colombia sede Medellín, Medellín 050034, Colombia
| | - Sarita Malagón
- Faculty of Dentistry, Universidad Cooperativa de Colombia sede Medellín, Medellín 055422, Colombia
| | - Alex Ossa
- School of Applied Sciences and Engineering, Universidad Eafit, Medellín 050022, Colombia
| | - Alejandro Peláez-Vargas
- Faculty of Dentistry, Universidad Cooperativa de Colombia sede Medellín, Medellín 055422, Colombia
| | - Carlos Paucar
- Grupo de Cerámicos y Vítreos, Universidad Nacional de Colombia sede Medellín, Medellín 050034, Colombia
| | - Alex Lopera
- Grupo de Nanoestructuras y Física Aplicada (NANOUPAR), Universidad Nacional de Colombia, La Paz 202017, Colombia
| | - Claudia Garcia
- Grupo de Cerámicos y Vítreos, Universidad Nacional de Colombia sede Medellín, Medellín 050034, Colombia
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15
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Das G, Patra JK. Evaluation of Antibacterial Mechanism of Action, Tyrosinase Inhibition, and Photocatalytic Degradation Potential of Sericin-Based Gold Nanoparticles. Int J Mol Sci 2023; 24:ijms24119477. [PMID: 37298428 DOI: 10.3390/ijms24119477] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/18/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
In recent times, numerous natural materials have been used for the fabrication of gold nanoparticles (AuNPs). Natural resources used for the synthesis of AuNPs are more environment friendly than chemical resources. Sericin is a silk protein that is discarded during the degumming process for obtaining silk. The current research used sericin silk protein waste materials as the reducing agent for the manufacture of gold nanoparticles (SGNPs) by a one-pot green synthesis method. Further, the antibacterial effect and antibacterial mechanism of action, tyrosinase inhibition, and photocatalytic degradation potential of these SGNPs were evaluated. The SGNPs displayed positive antibacterial activity (8.45-9.58 mm zone of inhibition at 50 μg/disc) against all six tested foodborne pathogenic bacteria, namely, Enterococcus feacium DB01, Staphylococcus aureus ATCC 13565, Listeria monocytogenes ATCC 33090, Escherichia coli O157:H7 ATCC 23514, Aeromonas hydrophila ATCC 7966, and Pseudomonas aeruginosa ATCC 27583. The SGNPs also exhibited promising tyrosinase inhibition potential, with 32.83% inhibition at 100 μg/mL concentration as compared to 52.4% by Kojic acid, taken as a reference standard compound. The SGNPs also displayed significant photocatalytic degradation effects, with 44.87% methylene blue dye degradation after 5 h of incubation. Moreover, the antibacterial mode of action of the SGNPs was also investigated against E. coli and E. feacium, and the results show that due to the small size of the nanomaterials, they could have adhered to the surface of the bacterial pathogens, and could have released more ions and dispersed in the bacterial cell wall surrounding environment, thereby disrupting the cell membrane and ROS production, and subsequently penetrating the bacterial cells, resulting in lysis or damage to the cell by the process of structural damage to the membrane, oxidative stress, and damage to the DNA and bacterial proteins. The overall outcome of the current investigation concludes the positive effects of the obtained SGNPs and their prospective applications as a natural antibacterial agent in cosmetics, environmental, and foodstuff industries, and for the management of environmental contagion.
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Affiliation(s)
- Gitishree Das
- Research Institute of Integrative Life Sciences, Dongguk University-Seoul, Goyangsi 10326, Republic of Korea
| | - Jayanta Kumar Patra
- Research Institute of Integrative Life Sciences, Dongguk University-Seoul, Goyangsi 10326, Republic of Korea
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16
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Vasil'kov A, Butenko I, Naumkin A, Voronova A, Golub A, Buzin M, Shtykova E, Volkov V, Sadykova V. Hybrid Silver-Containing Materials Based on Various Forms of Bacterial Cellulose: Synthesis, Structure, and Biological Activity. Int J Mol Sci 2023; 24:ijms24087667. [PMID: 37108827 PMCID: PMC10142189 DOI: 10.3390/ijms24087667] [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: 03/31/2023] [Revised: 04/17/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023] Open
Abstract
Sustained interest in the use of renewable resources for the production of medical materials has stimulated research on bacterial cellulose (BC) and nanocomposites based on it. New Ag-containing nanocomposites were obtained by modifying various forms of BC with Ag nanoparticles prepared by metal-vapor synthesis (MVS). Bacterial cellulose was obtained in the form of films (BCF) and spherical BC beads (SBCB) by the Gluconacetobacter hansenii GH-1/2008 strain under static and dynamic conditions. The Ag nanoparticles synthesized in 2-propanol were incorporated into the polymer matrix using metal-containing organosol. MVS is based on the interaction of extremely reactive atomic metals formed by evaporation in vacuum at a pressure of 10-2 Pa with organic substances during their co-condensation on the cooled walls of a reaction vessel. The composition, structure, and electronic state of the metal in the materials were characterized by transmission and scanning electron microscopy (TEM, SEM), powder X-ray diffraction (XRD), small-angle X-ray scattering (SAXS) and X-ray photoelectron spectroscopy (XPS). Since antimicrobial activity is largely determined by the surface composition, much attention was paid to studying its properties by XPS, a surface-sensitive method, at a sampling depth about 10 nm. C 1s and O 1s spectra were analyzed self-consistently. XPS C 1s spectra of the original and Ag-containing celluloses showed an increase in the intensity of the C-C/C-H groups in the latter, which are associated with carbon shell surrounding metal in Ag nanoparticles (Ag NPs). The size effect observed in Ag 3d spectra evidenced on a large proportion of silver nanoparticles with a size of less than 3 nm in the near-surface region. Ag NPs in the BC films and spherical beads were mainly in the zerovalent state. BC-based nanocomposites with Ag nanoparticles exhibited antimicrobial activity against Bacillus subtilis, Staphylococcus aureus, Escherichia coli bacteria and Candida albicans and Aspergillus niger fungi. It was found that AgNPs/SBCB nanocomposites are more active than Ag NPs/BCF samples, especially against Candida albicans and Aspergillus niger fungi. These results increase the possibility of their medical application.
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Affiliation(s)
- Alexander Vasil'kov
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Ivan Butenko
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
- G.F. Gause Institute of New Antibiotics, 119021 Moscow, Russia
| | - Alexander Naumkin
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Anastasiia Voronova
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Alexandre Golub
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Mikhail Buzin
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Eleonora Shtykova
- Shubnikov Institute of Crystallography, FSRC "Crystallography and Photonics" RAS, 119333 Moscow, Russia
| | - Vladimir Volkov
- Shubnikov Institute of Crystallography, FSRC "Crystallography and Photonics" RAS, 119333 Moscow, Russia
| | - Vera Sadykova
- G.F. Gause Institute of New Antibiotics, 119021 Moscow, Russia
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17
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Tamer TM, ElTantawy MM, Brussevich A, Nebalueva A, Novikov A, Moskalenko IV, Abu-Serie MM, Hassan MA, Ulasevich S, Skorb EV. Functionalization of chitosan with poly aromatic hydroxyl molecules for improving its antibacterial and antioxidant properties: Practical and theoretical studies. Int J Biol Macromol 2023; 234:123687. [PMID: 36801285 DOI: 10.1016/j.ijbiomac.2023.123687] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 01/02/2023] [Accepted: 02/11/2023] [Indexed: 02/18/2023]
Abstract
In this study, the chitosan backbone was functionalized with 2,2',4,4'-tetrahydroxybenzophenone by Schiff base, bonding the molecules into the repeating amine groups. The use of 1H NMR, FT-IR, and UV-Vis analyses provided compelling evidence of the structure of the newly developed derivatives. The deacetylation degree was calculated to be 75.35 %, and the degree of substitution was 5.53 % according to elemental analysis. The thermal analysis of samples using TGA demonstrated that CS-THB derivatives are more stable than chitosan itself. SEM was used to investigate the change in surface morphology. The improvement of the biological properties of chitosan was investigated in terms of its antibacterial activity against pathogenic antibiotic-resistant bacteria. The antioxidant properties showed an improvement in activity compared to chitosan by two times against ABTS radicals and four times against DPPH radicals. Furthermore, the cytotoxicity and anti-inflammatory properties were investigated using normal skin cells (HBF4) and WBCs. Quantum chemistry calculations revealed that combining polyphenol with chitosan makes it more effective as an antioxidant than either chitosan or polyphenol alone. Our findings suggest that the new chitosan Schiff base derivative could be utilized for tissue regeneration applications.
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Affiliation(s)
- Tamer M Tamer
- Infochemistry Scientific Center, ITMO University, Saint-Petersburg 191002, Russia.
| | - Mervat M ElTantawy
- Infochemistry Scientific Center, ITMO University, Saint-Petersburg 191002, Russia
| | - Arina Brussevich
- Infochemistry Scientific Center, ITMO University, Saint-Petersburg 191002, Russia
| | - Anna Nebalueva
- Infochemistry Scientific Center, ITMO University, Saint-Petersburg 191002, Russia
| | - Alexander Novikov
- Infochemistry Scientific Center, ITMO University, Saint-Petersburg 191002, Russia
| | - Ivan V Moskalenko
- Infochemistry Scientific Center, ITMO University, Saint-Petersburg 191002, Russia
| | - Marwa M Abu-Serie
- Medical Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P.O. Box: 21934, Alexandria, Egypt
| | - Mohamed A Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P.O. Box: 21934, Alexandria, Egypt
| | - Svetlana Ulasevich
- Infochemistry Scientific Center, ITMO University, Saint-Petersburg 191002, Russia
| | - Ekaterina V Skorb
- Infochemistry Scientific Center, ITMO University, Saint-Petersburg 191002, Russia.
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18
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Li S, Jiang M, Zhang Y, Xie X, Li W, Ming P, Jiang X, Yang B, He Y, Chen J, Tao G. Multi-functional carboxymethyl chitosan/sericin protein/halloysite composite sponge with efficient antibacterial and hemostatic properties for accelerating wound healing. Int J Biol Macromol 2023; 234:123357. [PMID: 36690231 DOI: 10.1016/j.ijbiomac.2023.123357] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023]
Abstract
The development of wound dressings with hemostatic and antibacterial properties has attracted great attention. In this study, we prepared a multi-functional natural substance sponge (CMC/Ser-Ag/HNT) composed of carboxymethyl chitosan (CMC), sericin-silver nanoparticle (Ser-Ag), and halloysite (HNT). CMC/Ser-Ag/HNT sponge was demonstrated to bear desired hygroscopicity, porosity, compressive strength and compressive stability, cytocompatibility, and hemocompatibility. The mechanical properties (compressive strength of 100 kPa) and hemostatic capacity (hemostasis time of 15 ± 3 s in the liver injury model and 12 ± 3 s in the caudal injury model) were enhanced by introducing HNT into the CMC sponge. Ser-Ag was synthesized in situ via the redox nature of tyrosine residues in sericin in a "one-step, green" way to enhance the antibacterial activity of the hybrid sponge against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). In addition, the rat full-thickness skin defect model experiments demonstrated that the CMC/Ser-Ag/HNT4 sponge significantly promoted epithelialization and collagen formation. Immunofluorescence staining assays revealed that the composite sponge reduced inflammation by downregulating the expression of IL-6 and enhanced angiogenesis by upregulating VEGF expression. All the findings demonstrated the great potential of CMC/Ser-Ag/HNT sponge as versatile clinical wound dressing, especially for hemorrhagic and infected wounds.
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Affiliation(s)
- Silei Li
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
| | - Min Jiang
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
| | - Yi Zhang
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
| | - Xinyu Xie
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
| | - Weili Li
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
| | - PiaoYe Ming
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
| | - Xueyu Jiang
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
| | - Binbin Yang
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
| | - Yun He
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China; Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China; School of Stomatology, Southwest Medical University, Luzhou 646000, China
| | - Junliang Chen
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China; Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China; School of Stomatology, Southwest Medical University, Luzhou 646000, China.
| | - Gang Tao
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China; School of Stomatology, Southwest Medical University, Luzhou 646000, China.
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Derakhshi M, Naseri M, Vafaeipour Z, Malaekeh-Nikouei B, Jafarian AH, Ansari L. Enhanced wound-healing efficacy of electrospun mesoporous hydroxyapatite nanoparticle-loaded chitosan nanofiber developed using pluronic F127. Int J Biol Macromol 2023; 240:124427. [PMID: 37060977 DOI: 10.1016/j.ijbiomac.2023.124427] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/07/2023] [Accepted: 04/08/2023] [Indexed: 04/17/2023]
Abstract
One of the goals of wound repairing is to mimic the function and architecture of the native extracellular matrix (ECM). To this end, for the first time, we used pluronic F127 and mesoporous rod-like hydroxyapatite nanoparticles (mr-HAP NPs) simultaneously to prepare a novel low-diameter electrospun ECM-mimicking wound dressing based on a mixture of chitosan and polyethylene oxide. F127 is used as a surface tension regulator of the polymer solution. In addition, F127 has the special ability to reduce the size of nanofibers. mr-HAP NPs are used as cell proliferation accelerators which also improve the mechanical properties and water uptake capacity of the as-prepared dressing. The average size of nanofibers in the presence of F127 was about 110 nm which was >2.5 times lower than nanofibers prepared without F127. The water uptake capacity was evaluated to investigate the wound exudate absorption capacity of the wound dressing. It was observed that the incorporation of mr-HAP NPs into wound dressing structure increases the water uptake capacity by >2.5 times. Alongside the evaluation of cytocompatibility through in vitro cell viability assay, the wound healing efficacy was also determined in full-thickness skin wounds in a rat model for 15 days. The cytocompatible wound dressing showed significantly higher wound closure efficacy than the control group so the wounds healed entirely on the last day of the treatment period. As well, the pathology analysis proved better granulation tissue development and greater re-epithelialization. These findings are by virtue of the improved mechanical properties, accelerated cell migration and proliferation, proper environment for oxygen exchange, and enhanced exudate uptake of the wound dressing. These all are due to the presence of F127 and mr-HAP.
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Affiliation(s)
- Mansooreh Derakhshi
- Nano Pajoohan Derakhshan Limited Liability Company, Mashhad 9158754156, Iran
| | - Mahdi Naseri
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zeinab Vafaeipour
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran; Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
| | - Bizhan Malaekeh-Nikouei
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Hossein Jafarian
- Cancer molecular pathology research center, Mashhad University of medical science, Mashhad, Iran
| | - Legha Ansari
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, Iran.
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Tamer TM, Zhou H, Hassan MA, Abu-Serie MM, Shityakov S, Elbayomi SM, Mohy-Eldin MS, Zhang Y, Cheang T. Synthesis and physicochemical properties of an aromatic chitosan derivative: In vitro antibacterial, antioxidant, and anticancer evaluations, and in silico studies. Int J Biol Macromol 2023; 240:124339. [PMID: 37028626 DOI: 10.1016/j.ijbiomac.2023.124339] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/25/2023] [Accepted: 04/02/2023] [Indexed: 04/09/2023]
Abstract
This study was designed to synthesize a functionalized chitosan by coupling the amine groups of chitosan with 2,4,6-Trimethoxybenzaldehyde, producing a chitosan Schiff base (Cs-TMB). The development of Cs-TMB was verified employing FT-IR, 1H NMR, the electronic spectrum, and elemental analysis. Antioxidant assays exhibited significant ameliorations of Cs-TMB, reporting scavenging activities of 69.67 ± 3.48 % and 39.65 ± 1.98 % for ABTS•+ and DPPH, respectively, while native chitosan showed scavenging ratios of 22.69 ± 1.13 % and 8.24 ± 0.4.1 % toward ABTS•+ and DPPH, respectively. Besides, Cs-TMB exerted significant antibacterial activity up to 90 % with remarkable bactericidal capacity against virulent gram-negative and gram-positive bacteria compared to the original chitosan. Furthermore, Cs-TMB exhibited a safe profile against normal fibroblast cells (HFB4). Interestingly, flow cytometric analysis showed that Cs-TMB demonstrated prominent anticancer properties of 52.35 ± 2.99 % against human skin cancer cells (A375), compared to 10.66 ± 0.55 % for Cs-treated cells. Moreover, Python and PyMOL in-house scripts were used to predict the interaction of Cs-TMB with the adenosine A1 receptor and visualized as a protein-ligand system submerged in a lipid membrane. Overall, these findings accentuate that Cs-TMB could be a favorable representative for wound dressing formulations and skin cancer treatment.
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Affiliation(s)
- Tamer M Tamer
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt.
| | - Hongyan Zhou
- Department of Neurology, Hospital of Sun Yat-sen University, Guangdong 510080, China.
| | - Mohamed A Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt.
| | - Marwa M Abu-Serie
- Medical Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt
| | - Sergey Shityakov
- Infochemistry Scientific Center, ITMO University, Saint-Petersburg 191002, Russia
| | - Smaher M Elbayomi
- Department of Chemistry, Faculty of Science, Damietta University, New Damietta City, Damietta 34517, Egypt
| | - Mohamed S Mohy-Eldin
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt
| | - Yongcheng Zhang
- Department of Breast Care Surgery, Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University, Guangdong 510080, China.
| | - Tuckyun Cheang
- Department of Neurosurgery, Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University, Guangdong 510080, China.
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Hassan MA, Tamer TM, Omer AM, Baset WMA, Abbas E, Mohy-Eldin MS. Therapeutic potential of two formulated novel chitosan derivatives with prominent antimicrobial activities against virulent microorganisms and safe profiles toward fibroblast cells. Int J Pharm 2023; 634:122649. [PMID: 36709834 DOI: 10.1016/j.ijpharm.2023.122649] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/19/2023] [Accepted: 01/22/2023] [Indexed: 01/27/2023]
Abstract
The development of new antimicrobial agents has been drawing considerable attention due to the extreme escalation of multi-drug resistant microorganisms. We thus sought to ameliorate the antimicrobial activities of the chitosan (Cs) biopolymer by coupling chitosan with cyclohexanone and 2-N-methyl pyrrolidone, synthesizing two novel Schiff bases (CsSB1 and CsSB2), respectively. FT-IR, TGA, DSC, SEM, and potentiometric titration were employed to characterize the formulated chitosan derivatives. The findings exposed that the degrees of deacetylation were 88.12% and 89.98% for CsSB1 and CsSB2, respectively. The antimicrobial capacities of CsSB1 and CsSB2 were substantially enhanced compared with prime chitosan. Furthermore, the CsSB1 and CsSB2 demonstrated minimum inhibitory concentrations (MIC) of 50 µg/ml in relation to all studied microorganisms, whereas chitosan revealed MIC value of 50 µg/ml only for E. coli. Furthermore, CsSB1 with a concentration of 250 µg/ml manifested the highest antibacterial activity against Gram-positive bacteria. Correspondingly, CsSB2 revealed a comparable trend of microbial hindrance with lower activities. Besides, the two derivatives could thwart the growth of Candida albicans (C. albicans). The cytotoxicity assay of the biomaterials accentuated their biocompatibility with fibroblasts. Collectively, the two formulated chitosan derivatives could competently rival the native chitosan, particularly for future applications in wound healing.
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Affiliation(s)
- Mohamed A Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P.O. Box: 21934 Alexandria, Egypt.
| | - Tamer M Tamer
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P.O. Box: 21934 Alexandria, Egypt.
| | - Ahmed M Omer
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P.O. Box: 21934 Alexandria, Egypt
| | - Walid M A Baset
- National Organization for Drug Control and Research (NODCAR), 51 Wezaret El-Zeraa st., Dokki, Cairo, Egypt
| | - Eman Abbas
- Zoology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Mohamed S Mohy-Eldin
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P.O. Box: 21934 Alexandria, Egypt
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Nabil-Adam A, Ashour ML, Tamer TM, Shreadah MA, Hassan MA. Interaction of Jania rubens Polyphenolic Extract as an Antidiabetic Agent with α-Amylase, Lipase, and Trypsin: In Vitro Evaluations and In Silico Studies. Catalysts 2023; 13:443. [DOI: 10.3390/catal13020443] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/30/2023] Open
Abstract
Jania rubens red seaweed has various bioactive compounds that can be used for several medicinal and pharmaceutical applications. In this study, we investigate the antidiabetic, anti-inflammatory, and antioxidant competency of Jania rubens polyphenolic extract (JRPE) by assessing their interactions with α-amylase, lipase, and trypsin enzymes. HPLC analysis revealed the dominance of twelve polyphenolic compounds. We performed computational analysis using α-amylase, lipase, and trypsin as target proteins for the polyphenols to explore their activities based on their predicted modes of binding sites following molecular modeling analysis. The molecular docking analysis demonstrated a good affinity score with a noticeable affinity to polyphenolic compositions of Jania rubens. The compounds with the highest affinity score for α-amylase (PDB: 4W93) were kaempferol, quercetin, and chlorogenic acid, with −8.4, −8.8 and −8 kcal/mol, respectively. Similarly, lipase (PDB: 1LPB) demonstrated high docking scores of −7.1, −7.4, and −7.2 kcal/mol for kaempferol, quercetin, and chlorogenic acid, respectively. Furthermore, for trypsin (PDB: 4DOQ) results, kaempferol, quercetin, and chlorogenic acid docking scores were −7.2, −7.2, and −7.1 kcal/mol, respectively. The docking findings were verified using in vitro evaluations, manifesting comparable results. Overall, these findings enlighten that the JRPE has antidiabetic, anti-inflammatory, and antioxidant properties using different diabetics’ enzymes that could be further studied using in vivo investigations for diabetes treatment.
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Affiliation(s)
- Asmaa Nabil-Adam
- Marine Biotechnology and Natural Products Laboratory, National Institute of Oceanography & Fisheries, Cairo 11516, Egypt
| | - Mohamed L. Ashour
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Abbasia, Cairo 11566, Egypt
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia
| | - Tamer M. Tamer
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City 21934, Alexandria, Egypt
| | - Mohamed A. Shreadah
- Marine Biotechnology and Natural Products Laboratory, National Institute of Oceanography & Fisheries, Cairo 11516, Egypt
| | - Mohamed A. Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City 21934, Alexandria, Egypt
- University Medical Center Göttingen, Georg-August-University, 37073 Göttingen, Germany
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Efficacy of Graphene-Based Nanocomposite Gels as a Promising Wound Healing Biomaterial. Gels 2022; 9:gels9010022. [PMID: 36661790 PMCID: PMC9858251 DOI: 10.3390/gels9010022] [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: 11/22/2022] [Revised: 12/18/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022] Open
Abstract
The development of biocompatible nanocomposite hydrogels with effective wound healing/microbicidal properties is needed to bring out their distinguished characteristics in clinical applications. The positive interaction between graphene oxide/reduced graphene oxide (GO/rGO) and hydrogels and aloe vera gel represents a strong strategy for the advancement of therapeutic approaches for wound healing. In this study, the synthesis, characterization, and angiogenic properties of graphene-based nanocomposite gels have been corroborated and substantiated through several in vitro and in vivo assays. In this respect, graphene oxide was synthesized by incorporating a modified Hummer's method and ascertained by Raman spectroscopy. The obtained GO and rGO were uniformly dispersed into the aloe vera gel and hydrogel, respectively, as wound healing materials. These formulations were characterized via in vitro bio-chemical techniques and were found suitable for the appropriate cell viability, attachment, and proliferation. In addition, in vivo experiments were conducted using male Wistar rats. This revealed that the GO/rGO-based gels stimulated wound contraction and re-epithelialization compared to that of the non-treatment group. From the study, it is suggested that GO/rGO-based aloe vera gel can be recommended as a promising candidate for wound healing applications.
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El-Samad LM, Hassan MA, Basha AA, El-Ashram S, Radwan EH, Abdul Aziz KK, Tamer TM, Augustyniak M, El Wakil A. Carboxymethyl cellulose/sericin-based hydrogels with intrinsic antibacterial, antioxidant, and anti-inflammatory properties promote re-epithelization of diabetic wounds in rats. Int J Pharm 2022; 629:122328. [PMID: 36280221 DOI: 10.1016/j.ijpharm.2022.122328] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 11/09/2022]
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Tamer TM, Sabet MM, Alhalili ZAH, Ismail AM, Mohy-Eldin MS, Hassan MA. Influence of Cedar Essential Oil on Physical and Biological Properties of Hemostatic, Antibacterial, and Antioxidant Polyvinyl Alcohol/Cedar Oil/Kaolin Composite Hydrogels. Pharmaceutics 2022; 14:pharmaceutics14122649. [PMID: 36559143 PMCID: PMC9785206 DOI: 10.3390/pharmaceutics14122649] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/22/2022] [Accepted: 11/25/2022] [Indexed: 12/03/2022] Open
Abstract
Polyvinyl alcohol (PVA) is a safe and biodegradable polymer. Given the unique physical and chemical properties of PVA, we physically cross-linked PVA with kaolin (K) and cedar essential oil (Ced) using the freeze-thawing approach to fabricate PVA/Ced/K sponge hydrogels as hemostatic, antibacterial, and antioxidant wound healing materials. The physicochemical characteristics of PVA/Ced/K hydrogels, including water swelling profiles and gel fractions, were surveyed. Additionally, the functional groups of hydrogels were explored by Fourier transform infrared spectroscopy (FTIR), while their microstructures were studied using scanning electron microscopy (SEM). Furthermore, the thermal features of the hydrogels were probed by thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). Evidently, alterations in cedar concentrations resulted in significant variations in size, water uptake profiles, and hydrolytic degradation of the hydrogels. The incorporation of cedar into the PVA/K endowed the hydrogels with significantly improved antibacterial competency against Bacillus cereus (B. cereus) and Escherichia coli (E. coli). Moreover, PVA/Ced/K exhibited high scavenging capacities toward ABTS•+ and DPPH free radicals. Beyond that, PVA/Ced/K hydrogels demonstrated hemocompatibility and fast blood clotting performance in addition to biocompatibility toward fibroblasts. These findings accentuate the prospective implementation of PVA/Ced/K composite hydrogel as a wound dressing.
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Affiliation(s)
- Tamer M. Tamer
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt
- Correspondence: (T.M.T.); (M.A.H.)
| | - Maysa M. Sabet
- Central Laboratory, Faculty of Agriculture, Ain Sham University, Cairo 11241, Egypt
| | - Zahrah A. H. Alhalili
- Department of Chemistry, Faculty of Sciences and Arts in Sajir, Shaqra University, Dawadmi 11912, Saudi Arabia
| | - Ahmed M. Ismail
- Basic Science Department-Arab Academy for Science, Technology and Maritime Transport, Aswan Branch, Aswan 81511, Egypt
| | - Mohamed S. Mohy-Eldin
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt
| | - Mohamed A. Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt
- University Medical Center Göttingen, Georg-August-University, 37073 Göttingen, Germany
- Correspondence: (T.M.T.); (M.A.H.)
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Wang J, Xiang Q, Gu S, Gu Y, Yao M, Huang W, Gao W, Tang LL. Short- and Long-Term Effects of Different Antibiotics on the Gut Microbiota and Cytokines Level in Mice. Infect Drug Resist 2022; 15:6785-6797. [PMID: 36447789 PMCID: PMC9701508 DOI: 10.2147/idr.s388687] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 11/14/2022] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND Antibiotics are the first line of treatment for infectious diseases. However, their overuse can increase the spread of drug-resistant bacteria. The present study analyzed the impact of different types of antibiotics on the gut microbiome and cytokines level of mice. METHODS A total of five groups of 8-week-old male BALB/c mice (n = 35) were treated with piperacillin-tazobactam (TZP), ceftriaxone (CRO), tigecycline (TGC), levofloxacin (LEV) or normal saline (Ctrl), respectively, for up to 4 weeks. Fecal samples were analyzed by bacterial 16S rRNA gene sequencing for bacterial identification. Blood samples were used for the determination of 23 serum cytokines using multiplex immunoassay. RESULTS Exposure to antibiotics was shown to affect the normal weight gain of mice. Significant changes in gut composition caused by TZP, CRO and TGC treatment included the decreased abundance of Bacteroidetes (p < 0.01), Muribaculaceae (p < 0.01) and Lachnospiraceae (p < 0.01), and the increased abundance of Proteobacteria (p < 0.05), Enterobacteriaceae (including Klebsiella and Enterobacter) (p < 0.01) and Enterococcaceae (including Enterococcus) (p < 0.01). After 4-week treatment, the TZP, CRO and LEV groups had significantly lower concentrations of several serum cytokines. Correlation analysis of the top 30 bacterial genera and cytokines showed that Enterococcus and Klebsiella were strongly positively correlated with tumor necrosis factor-α (TNF-α), interleukins (IL) IL-12p70 and IL-1β. Desulfovibrio, Candidatus Saccharimonas, norank_f__norank_o__Clostridia_UCG-014, Lactobacillus, and Roseburia were strongly negatively correlated with these cytokines. CONCLUSION This study demonstrates the effects of various antibiotics on the intestinal microflora and immune status of mice. Compared with TZP, CRO and TGC, LEV had minimal impact on the gut microbiota. In addition to TGC, long-term TZP, CRO and LEV intervention can lead to a decrease in serum cytokine levels, which may depend on the intestinal microflora, antibiotic used and the duration of treatment.
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Affiliation(s)
- Jingxia Wang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University, Shulan International Medical College, Hangzhou, People’s Republic of China
| | - Qiangqiang Xiang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University, Shulan International Medical College, Hangzhou, People’s Republic of China
| | - Silan Gu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Yudan Gu
- Zhejiang Chinese Medical University, Hangzhou, People’s Republic of China
| | - Mingfei Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Weixin Huang
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, People’s Republic of China
- Shaoxing Tongchuang Biotechnology Co., Ltd, Shaoxing, People’s Republic of China
| | - Wang Gao
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, People’s Republic of China
| | - Ling-Ling Tang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University, Shulan International Medical College, Hangzhou, People’s Republic of China
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E. Abou Warda A, Molham F, Salem HF, Mostafa-Hedeab G, ALruwaili BF, Moharram AN, Sebak M, Sarhan RM. Emergence of High Antimicrobial Resistance among Critically Ill Patients with Hospital-Acquired Infections in a Tertiary Care Hospital. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:1597. [PMID: 36363554 PMCID: PMC9698311 DOI: 10.3390/medicina58111597] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/30/2022] [Accepted: 11/01/2022] [Indexed: 09/26/2023]
Abstract
Background and Objectives: Inappropriate antibiotic usage in hospitalized patients contributes to microbial resistance. Our study aimed to examine the incidence of clinical bacterial isolates and their antibiotic resistance burden among critically ill patients in different hospital units. Materials and Methods: A single-centered cross-sectional study was conducted in a 120-bed tertiary care hospital that included 221 critically ill patients with hospital-acquired infections. Bacterial cultures and sensitivity reports were obtained and followed by a formal analysis of the antibiogram results to explore recovered isolates' prevalence and antibiotic susceptibility patterns. Results: Gram-negative bacteria were the most predominant pathogens among recovered isolates from the various hospital units (71%). Klebsiella sp. was the most prevalent microbe, followed by Acinetobacter sp., with an incidence level of 28% and 16.2%, respectively. Among the Gram-positive organisms, the coagulase-negative Staphylococci were the most predominant organism (11.3%), while (6.3%) methicillin-resistant Staphylococcus aureus (MRSA) isolates were recovered from different hospital units. Antibiotic sensitivity testing showed that polymyxin B was the most effective antibiotic against Gram-negative bacteria, whereas vancomycin and linezolid were the most active antibiotics against Gram-positive pathogens. Moreover, 7% of the Gram-negative bacteria isolated from different units showed positive production of extended-spectrum beta-lactamase (ESBL). Conclusions: The current study describes the high antibiotic resistance patterns in various hospital units that need extra legislation to prevent healthcare providers from misprescription and overuse of antibiotics.
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Affiliation(s)
- Ahmed E. Abou Warda
- Clinical Pharmacy Department, Faculty of Pharmacy, October 6 University, Giza 12585, Egypt
| | - Fatma Molham
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Heba F. Salem
- Pharmaceutics and Industrial Pharmacy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Gomaa Mostafa-Hedeab
- Pharmacology Department, Medical College, Jouf University, Sakaka 72388, Saudi Arabia
| | - Bashayer F. ALruwaili
- Community and Family Medicine Department, Division of Family Medicine, Medical College, Jouf University, Sakaka 72388, Saudi Arabia
| | - Ayman N. Moharram
- Critical Care Medicine Department, Faculty of Medicine, Cairo University, Giza 12613, Egypt
| | - Mohamed Sebak
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Rania M. Sarhan
- Clinical Pharmacy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
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Mansour H, El-Sigeny S, Shoman S, Abu-Serie MM, Tamer TM. Preparation, Characterization, and Bio Evaluation of Fatty N- Hexadecanyl Chitosan Derivatives for Biomedical Applications. Polymers (Basel) 2022; 14:polym14194011. [PMID: 36235961 PMCID: PMC9573078 DOI: 10.3390/polym14194011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 11/24/2022] Open
Abstract
The objective of this study was to improve the antibacterial activities of chitosan via N-alkyl substitution using 1-bromohexadecane. Mono and di substitution (Mono-NHD-Ch and Di-NHD-Ch) were prepared and characterized using FT-IR, HNMR, TGA, DSC, and SEM. Elemental analysis shows an increase in the C/N ratio from 5.45 for chitosan to 8.63 for Mono-NHD-Ch and 10.46 for Di-NHD-Ch. The antibacterial properties were evaluated against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus cereus. In the examined microorganisms, the antibacterial properties of the novel alkyl derivatives increased substantially higher than chitosan. The minimum inhibitory concentration (MIC) of Mono-NHD-Ch and Di-NHD-Ch was perceived at 50 μg/mL against tested microorganisms, except for B. cereus. The MTT test was used to determine the cytotoxicity of the produced materials, which proved their safety to fibroblast cells. The findings suggest that the new N-Alkyl chitosan derivatives might be used as antibacterial alternatives to pure chitosan in wound infection treatments.
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Affiliation(s)
- Hanaa Mansour
- Department of Chemistry, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Samia El-Sigeny
- Department of Chemistry, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Sarah Shoman
- Department of Chemistry, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Marwa M. Abu-Serie
- Medical Biotechnology Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria 21934, Egypt
| | - Tamer M. Tamer
- Polymer Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria 21934, Egypt
- Infochemistry Scientific Center, ITMO University, 191002 Saint Petersburg, Russia
- Correspondence: ; Tel.: +7(965)0227468
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Aderibigbe BA. Hybrid-Based Wound Dressings: Combination of Synthetic and Biopolymers. Polymers (Basel) 2022; 14:polym14183806. [PMID: 36145951 PMCID: PMC9502880 DOI: 10.3390/polym14183806] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/03/2022] [Accepted: 09/05/2022] [Indexed: 11/16/2022] Open
Abstract
Most commercialized wound dressings are polymer-based. Synthetic and natural polymers have been utilized widely for the development of wound dressings. However, the use of natural polymers is limited by their poor mechanical properties, resulting in their combination with synthetic polymers and other materials to enhance their mechanical properties. Natural polymers are mostly affordable, biocompatible, and biodegradable with promising antimicrobial activity. They have been further tailored into unique hybrid wound dressings when combined with synthetic polymers and selected biomaterials. Some important features required in an ideal wound dressing include the capability to prevent bacteria invasion, reduce odor, absorb exudates, be comfortable, facilitate easy application and removal as well as frequent changing, prevent further skin tear and irritation when applied or removed, and provide a moist environment and soothing effect, be permeable to gases, etc. The efficacy of polymers in the design of wound dressings cannot be overemphasized. This review article reports the efficacy of wound dressings prepared from a combination of synthetic and natural polymers.
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