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Wang YL, Lee YH, Chou CL, Chang YS, Liu WC, Chiu HW. Oxidative stress and potential effects of metal nanoparticles: A review of biocompatibility and toxicity concerns. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 346:123617. [PMID: 38395133 DOI: 10.1016/j.envpol.2024.123617] [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: 06/20/2023] [Revised: 02/17/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024]
Abstract
Metal nanoparticles (M-NPs) have garnered significant attention due to their unique properties, driving diverse applications across packaging, biomedicine, electronics, and environmental remediation. However, the potential health risks associated with M-NPs must not be disregarded. M-NPs' ability to accumulate in organs and traverse the blood-brain barrier poses potential health threats to animals, humans, and the environment. The interaction between M-NPs and various cellular components, including DNA, multiple proteins, and mitochondria, triggers the production of reactive oxygen species (ROS), influencing several cellular activities. These interactions have been linked to various effects, such as protein alterations, the buildup of M-NPs in the Golgi apparatus, heightened lysosomal hydrolases, mitochondrial dysfunction, apoptosis, cell membrane impairment, cytoplasmic disruption, and fluctuations in ATP levels. Despite the evident advantages M-NPs offer in diverse applications, gaps in understanding their biocompatibility and toxicity necessitate further research. This review provides an updated assessment of M-NPs' pros and cons across different applications, emphasizing associated hazards and potential toxicity. To ensure the responsible and safe use of M-NPs, comprehensive research is conducted to fully grasp the potential impact of these nanoparticles on both human health and the environment. By delving into their intricate interactions with biological systems, we can navigate the delicate balance between harnessing the benefits of M-NPs and minimizing potential risks. Further exploration will pave the way for informed decision-making, leading to the conscientious development of these nanomaterials and safeguarding the well-being of society and the environment.
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Affiliation(s)
- Yung-Li Wang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, 110, Taiwan
| | - Yu-Hsuan Lee
- Department of Cosmeceutics, China Medical University, Taichung, 406, Taiwan
| | - Chu-Lin Chou
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 110, Taiwan; Division of Nephrology, Department of Internal Medicine, Hsin Kuo Min Hospital, Taipei Medical University, Taoyuan City, 320, Taiwan; TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, 110, Taiwan; Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, 235, Taiwan
| | - Yu-Sheng Chang
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, 235, Taiwan; Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 110, Taiwan
| | - Wen-Chih Liu
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, 114, Taiwan; Section of Nephrology, Department of Medicine, Antai Medical Care Corporation Antai Tian-Sheng Memorial Hospital, Pingtung, 928, Taiwan; Department of Nursing, Meiho University, Pingtung, 912, Taiwan
| | - Hui-Wen Chiu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, 110, Taiwan; TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, 110, Taiwan; Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, 235, Taiwan; Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, Taipei, 110, Taiwan.
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El-Zawawy NA, Kenawy ER, Ahmed S, El-Sapagh S. Bioproduction and optimization of newly characterized melanin pigment from Streptomyces djakartensis NSS-3 with its anticancer, antimicrobial, and radioprotective properties. Microb Cell Fact 2024; 23:23. [PMID: 38229042 DOI: 10.1186/s12934-023-02276-y] [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: 10/02/2023] [Accepted: 12/15/2023] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND Melanin is a natural pigment that is considered a promising biomaterial for numerous biotechnological applications across several industries. Melanin has biomedical applications as antimicrobial, anticancer, and antioxidant properties. Additionally, in the pharmaceutical and cosmetic industries, it is used in drug delivery and as a radioprotective agent. Also, melanin has environmental uses in the fields of bioremediation and the food industry. The biosynthesis of melanin pigment is an area of interest for researchers due to its multifunctionality, high compatibility, and biodegradability. Therefore, our present work is the first attempt to characterize and optimize the productivity of melanin pigment from Streptomyces djakartensis NSS-3 concerning its radioprotection and biological properties. RESULTS Forty isolates of soil actinobacteria were isolated from the Wadi Allaqui Biosphere Reserve, Egypt. Only one isolate, ACT3, produced a dark brown melanin pigment extracellularly. This isolate was identified according to phenotypic properties and molecular phylogenetic analysis as Streptomyces djakartensis NSS-3 with accession number OP912881. Plackett-Burman experimental design (PBD) and response surface methodology (RSM) using a Box-Behnken design (BBD) were performed for optimum medium and culturing conditions for maximum pigment production, resulting in a 4.19-fold improvement in melanin production (118.73 mg/10 mL). The extracted melanin pigment was purified and characterized as belonging to nitrogen-free pyomelanin based on ultraviolet-visible spectrophotometry (UV-VIS), Fourier transform infrared (FT-IR), Raman spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and NMR studies. Purified melanin demonstrated potent scavenging activity with IC50 values of 18.03 µg/mL and revealed high potency as sunscreens (in vitro SPF = 18.5). Moreover, it showed a nontoxic effect on a normal cell line (WI38), while it had a concentration-dependent anticancer effect on HCT116, HEPG, and MCF7 cell lines with IC50 = 108.9, 43.83, and 81.99 µg/mL, respectively. Also, purified melanin had a detrimental effect on the tested MDR bacterial strains, of which PA-09 and SA-04 were clearly more susceptible to melanin compared with other strains with MICs of 6.25 and 25 µg/mL, respectively. CONCLUSION Our results demonstrated that the newly characterized pyomelanin from Streptomyces djakartensis NSS-3 has valuable biological properties due to its potential photoprotective, antioxidant, anticancer, antimicrobial, and lack of cytotoxic activities, which open up new prospects for using this natural melanin pigment in various biotechnological applications and avoiding chemical-based drugs.
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Affiliation(s)
- Nessma A El-Zawawy
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, Egypt.
| | - El-Refaie Kenawy
- Chemistry Department, Polymer Research Unit, Faculty of Science, Tanta University, Tanta, Egypt
| | - Sara Ahmed
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, Egypt
| | - Shimaa El-Sapagh
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, Egypt
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Rizal S, Nurhapsari I, Fauziah I, Masrukhin M, Jatmiko YD. Prevalence of multidrug-resistant and extended-spectrum β-lactamase producing Escherichia coli from local and broiler chickens at Cibinong market, West Java, Indonesia. Vet World 2024; 17:179-184. [PMID: 38406353 PMCID: PMC10884567 DOI: 10.14202/vetworld.2024.179-184] [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: 08/20/2023] [Accepted: 12/18/2023] [Indexed: 02/27/2024] Open
Abstract
Background and Aim Antimicrobial resistance (AMR) is becoming a public health concern. Foodborne pathogens are infectious agents that can be transmitted from animals to humans through food and can become resistant due to misuse and overuse of antibiotics, especially in poultry. This study aimed to detect the prevalence of multidrug-resistant and extended-spectrum β-lactamase (ESBL)-producing Escherichia coli isolated from local and broiler chickens at the Cibinong market, West Java, Indonesia. Materials and Methods A total of 60 cloacal swab samples from 30 local and broiler chickens sold at the Cibinong market in West Java were obtained by random sampling. From these samples, 39 E. coli isolates were obtained after being cultured on eosin methylene blue agar and molecularly identified using polymerase chain reaction (PCR). Six antibiotic disks were used for the antibiotic sensitivity test against E. coli isolates cultured on Mueller-Hinton agar. PCR was performed to detect ESBL genes (blaTEM, blaSHV, and blaCTX-M). Results A total of 76.47% (39/51) cloacal swab samples were positive for E. coli. All E. coli isolates were sensitive to imipenem (100%), and 38 isolates were sensitive to cefoxitin (FOX) (97.4%). On average, the isolates were sensitive to amoxicillin-clavulanic acid (AMC) (69.2%) and ceftriaxone (CRO) (89.7%). E. coli isolates were occasionally resistant to enrofloxacin (25.64%), followed by gentamicin (20.51%), CRO (10.25%), AMC (7.69%), and FOX (2.56%). The prevalence of E. coli AMR was 10.25% (4/39). All four multidrug-resistant E. coli isolates (blaTEM and blaCTX-M) were confirmed to have the ESBL gene based on PCR. Conclusion The prevalence of multidrug-resistant and ESBL-producing E. coli is still found, proving that there is still inappropriate use of antibiotics and a need for strict supervision of their use, especially around Cibinong market, West Java.
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Affiliation(s)
- Syaiful Rizal
- Research Center for Applied Zoology, Research Organization for Life Science and Environment, National Research and Innovation Agency (BRIN), Indonesia, Soekarno Science and Techno Park, Jl. Raya Jakarta - Bogor KM. 46, Cibinong, Bogor 16911, West Java, Indonesia
| | - Intan Nurhapsari
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Brawijaya, Jl. Veteran, Malang 65145, East Java, Indonesia
| | - Ima Fauziah
- Research Center for Applied Zoology, Research Organization for Life Science and Environment, National Research and Innovation Agency (BRIN), Indonesia, Soekarno Science and Techno Park, Jl. Raya Jakarta - Bogor KM. 46, Cibinong, Bogor 16911, West Java, Indonesia
| | - Masrukhin Masrukhin
- Research Center for Biosystematics and Evolution, Research Organization for Life Science and Environment, National Research and Innovation Agency (BRIN), Indonesia, Soekarno Science and Techno Park, Jl. Raya Jakarta - Bogor KM. 46, Cibinong, Bogor 16911, West Java, Indonesia
| | - Yoga Dwi Jatmiko
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Brawijaya, Jl. Veteran, Malang 65145, East Java, Indonesia
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Sobhy M, Ali SS, Cui H, Lin L, El-Sapagh S. Exploring the potential of 1,8-cineole from cardamom oil against food-borne pathogens: Antibacterial mechanisms and its application in meat preservation. Microb Pathog 2023; 184:106375. [PMID: 37774989 DOI: 10.1016/j.micpath.2023.106375] [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: 07/14/2023] [Revised: 09/13/2023] [Accepted: 09/27/2023] [Indexed: 10/01/2023]
Abstract
Food-borne pathogenic bacteria are a major public health concern globally. Traditional control methods using antibiotics have limitations, leading to the exploration of alternative strategies. Essential oils such as cardamom possess antimicrobial properties and have shown efficacy against food-borne pathogenic bacteria. The utilization of essential oils and their bioactive constituents in food preservation is a viable strategy to prolong the shelf-life of food products while ensuring their quality and safety. To the best of our knowledge, there are no studies that have utilized 1,8-cineole (the main active constituent of cardamom essential oil) as a preservative in meat, so this study might be the first to utilize 1,8-cineole as an antibacterial agent in meat preservation. The application of 1,8-cineole had a significant suppressive impact on the growth rate of Listeria monocytogenes, Staphylococcus aureus, Escherichia coli, and Salmonella Typhimurium in meat samples stored for 7 days at 4 °C. Additionally, the surface color of the meat samples was not negatively impacted by the application of 1,8-cineole. The minimum inhibitory concentration was 12.5-25 mg/ml, and the minimum bactericidal concentration was 25-50.0 mg/ml. The bacterial cell membrane may be the target of cardamom, causing leakage of intracellular proteins, ATP, and DNA. The obtained data in this study may pave a new avenue for using 1,8-cineole as a new perspective for dealing with this problem of food-borne pathogens and food preservation, such as meat.
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Affiliation(s)
- Mabrouk Sobhy
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China; Food Science and Technology Department, Faculty of Agriculture, Alexandria University, 21545, El-Shatby, Alexandria, Egypt
| | - Sameh S Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
| | - Haiying Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Lin Lin
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Shimaa El-Sapagh
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
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Ali SS, Elgibally E, Khalil MA, Sun J, El-Shanshoury AERR. Characterization and bioactivities of exopolysaccharide produced from Azotobacter salinestris EPS-AZ-6. Int J Biol Macromol 2023; 246:125594. [PMID: 37390994 DOI: 10.1016/j.ijbiomac.2023.125594] [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: 01/29/2023] [Revised: 05/30/2023] [Accepted: 06/26/2023] [Indexed: 07/02/2023]
Abstract
This study involved the extraction of an exopolysaccharide (EPS) from Azotobacter salinestris AZ-6, which was isolated from soil cultivated with leguminous plants. In a medium devoid of nitrogen, the AZ-6 strain displayed a maximum EPS yield of 1.1 g/l and the highest relative viscosity value of 3.4. The homogeneity of the polymer was demonstrated by the average molecular weight of 1.61 × 106 Da and a retention time of 17.211 min for levan. The presence of characteristic functional groups and structural units of carbohydrate polymers has been confirmed through spectroscopic analyses utilizing Fourier-transform infrared (FT-IR) and nuclear magnetic resonance (NMR) techniques. Thermogravimetric analysis (TGA) revealed a noteworthy decrease in weight (74 %) in the temperature range spanning from 260 to 350 °C. X-ray diffraction (XRD) was utilized to verify the crystalline and amorphous characteristics of EPS-AZ-6. The EPS-AZ-6 exhibited significant cytotoxicity against the MCF-7 tumor cell line, as evidenced by an IC50 value of 6.39 ± 0.05 μg/ml. It also demonstrated a moderate degree of cytotoxicity towards HepG-2 cell line, as indicated by an IC50 value of 29.79 ± 0.41 μg/ml. EPS-AZ-6 exhibited potent antioxidant and in vitro antibacterial properties. These characteristics suggest the potential application value of EPS-AZ-6 in the food industry and pharmaceutical applications.
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Affiliation(s)
- Sameh Samir Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
| | - Eman Elgibally
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Maha A Khalil
- Biology Department, College of Science, Taif University, P. O. Box 11099, Taif 21944, Saudi Arabia
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
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Ahmed HA, Elsohaby I, Elamin AM, El-Ghafar AEA, Elsaid GA, Elbarbary M, Mohsen RA, El Feky TM, El Bayomi RM. Extended-spectrum β-lactamase-producing E. coli from retail meat and workers: genetic diversity, virulotyping, pathotyping and the antimicrobial effect of silver nanoparticles. BMC Microbiol 2023; 23:212. [PMID: 37550643 PMCID: PMC10405496 DOI: 10.1186/s12866-023-02948-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 07/18/2023] [Indexed: 08/09/2023] Open
Abstract
BACKGROUND The spread of extended-spectrum β-lactamases (ESBL) producing E. coli from food animals and the environment to humans has become a significant public health concern. The objectives of this study were to determine the occurrence, pathotypes, virulotypes, genotypes, and antimicrobial resistance patterns of ESBL-producing E. coli in retail meat samples and workers in retail meat shops in Egypt and to evaluate the bactericidal efficacy of silver nanoparticles (AgNPs-H2O2) against multidrug resistant (MDR) ESBL-producing E. coli. RESULTS A total of 250 retail meat samples and 100 human worker samples (hand swabs and stool) were examined for the presence of ESBL- producing E. coli. Duck meat and workers' hand swabs were the highest proportion of ESBL- producing E. coli isolates (81.1%), followed by camel meat (61.5%). Pathotyping revealed that the isolates belonged to groups A and B1. Virulotyping showed that the most prevalent virulence gene was Shiga toxin 2 (stx2) associated gene (36.9%), while none of the isolates harbored stx1 gene. Genotyping of the identified isolates from human and meat sources by REP-PCR showed 100% similarity within the same cluster between human and meat isolates. All isolates were classified as MDR with an average multiple antibiotic resistance (MAR) index of 0.7. AgNPs-H2O2 at concentrations of 0.625, 1.25, 2.5 and 5 μg/mL showed complete bacterial growth inhibition. CONCLUSIONS Virulent MDR ESBL-producing E. coli were identified in retail meat products in Egypt, posing significant public health threats. Regular monitoring of ESBL-producing E. coli frequency and antimicrobial resistance profile in retail meat products is crucial to enhance their safety. AgNPs-H2O2 is a promising alternative for treating MDR ESBL-producing E. coli infections and reducing antimicrobial resistance risks.
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Affiliation(s)
- Heba A Ahmed
- Department of Zoonoses, Faculty of Veterinary Medicine, Zagazig University, Zagazig City, 44511, Sharkia Governorate, Egypt.
| | - Ibrahim Elsohaby
- Department of Infectious Diseases and Public Health, Jockey Club of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong SAR, China
- Centre for Applied One Health Research and Policy Advice (OHRP), City University of Hong Kong, Hong Kong SAR, China
- Department of Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig City, 44511, Sharkia Governorate, Egypt
| | - Amina M Elamin
- Department of Food Hygiene, Zagazig Branch, Agriculture Research Center (ARC), Animal Health Research Institute (AHRI), Zagazig City, Egypt
| | - Abeer E Abd El-Ghafar
- Department of Bacteriology, Mansoura Branch, Agriculture Research Center (ARC), Animal Health Research Institute (AHRI), Mansoura City, Egypt
| | - Gamilat A Elsaid
- Department of Food Hygiene, Mansoura Branch, Agriculture Research Center (ARC), Animal Health Research Institute (AHRI), Mansoura City, Egypt
| | - Mervat Elbarbary
- Department of Food Hygiene, Zagazig Branch, Agriculture Research Center (ARC), Animal Health Research Institute (AHRI), Zagazig City, Egypt
| | - Rasha A Mohsen
- Department of Bacteriology, Mansoura Branch, Agriculture Research Center (ARC), Animal Health Research Institute (AHRI), Mansoura City, Egypt
| | - Tamer M El Feky
- Department of Bacteriology, Mansoura Branch, Agriculture Research Center (ARC), Animal Health Research Institute (AHRI), Mansoura City, Egypt
| | - Rasha M El Bayomi
- Department of Food Control, Faculty of Veterinary Medicine, Zagazig University, Zagazig City, 44511, Sharkia Governorate, Egypt
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El-Zawawy NA, Ali SS, Nouh HS. Exploring the potential of Rhizopus oryzae AUMC14899 as a novel endophytic fungus for the production of L-tyrosine and its biomedical applications. Microb Cell Fact 2023; 22:31. [PMID: 36804031 PMCID: PMC9942418 DOI: 10.1186/s12934-023-02041-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 02/12/2023] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND A significant threat to the public's health is the rise in antimicrobial resistance among numerous nosocomial bacterial infections. This may be a detriment to present initiatives to enhance the health of immune-compromised patients. Consequently, attention has been devoted to exploring new bioactive compounds in the field of drug discovery from endophytes. Therefore, this study is the first on the production of L-tyrosine (LT) as a promising bio-therapeutic agent from endophytic fungi. RESULTS A new endophytic fungal isolate has been identified for the first time as Rhizopus oryzae AUMC14899 from Opuntia ficus-indica (L.) and submitted to GenBank under the accession number MZ025968. Separation of amino acids in the crude extract of this fungal isolate was carried out, giving a higher content of LT, which is then characterized and purified. LT exhibited strong antibacterial and anti-biofilm activities against multidrug-resistant Gram-negative and Gram-positive bacteria. The recorded minimum inhibitory concentration (MIC) values ranged from 6 to 20 µg/ml. In addition, LT caused a strong reduction in biofilm formation and disrupted the preformed biofilm. Moreover, results indicated that LT supported cell viability, evidencing hemocompatibility and no cytotoxicity. CONCLUSION Our findings suggest that LT has potential as a therapeutic agent due to its potential antibacterial, anti-biofilm, hemocompatibility, and lack of cytotoxic activities, which may also increase the range of therapy options for skin burn infections, leading to the development of a novel fungal-based drug.
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Affiliation(s)
- Nessma A. El-Zawawy
- grid.412258.80000 0000 9477 7793Botany Department, Faculty of Science, Tanta University, Tanta, 31527 Egypt
| | - Sameh Samir Ali
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
| | - Hoda S. Nouh
- grid.412258.80000 0000 9477 7793Botany Department, Faculty of Science, Tanta University, Tanta, 31527 Egypt
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Antibiotic Resistance and Biofilm Formation in Enterococcus spp. Isolated from Urinary Tract Infections. Pathogens 2022; 12:pathogens12010034. [PMID: 36678381 PMCID: PMC9863506 DOI: 10.3390/pathogens12010034] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/12/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
Background: A urinary tract infection (UTI) resulting from multidrug-resistant (MDR) enterococci is a common disease with few therapeutic options. About 15% of urinary tract infections are caused by biofilm-producing Enterococcus spp. Therefore, the objective of this study was to identify the MDR enterococci associated with UTIs and assess their potential to produce biofilms. Methods: Thirty Enterococcus isolates were obtained from urine samples collected from UTI patients at King Abdulaziz Specialist Hospital in Taif, Saudi Arabia. The antimicrobial resistance profiles of the isolates were evaluated using disk diffusion techniques against 15 antimicrobial agents. Two techniques, Congo red agar (CRA) and a microtiter plate (MTP), were used to assess the potential of the isolates to produce biofilms. The enterococcal isolates were screened for biofilm-related genes, esp; ebpA; and ebpB, using the PCR method. Results: The molecular identification of the collected bacteria revealed the presence of 73.3% Enterococcus faecalis and 26.6% Enterococcus faecium. The antibiotic susceptibility test revealed that all the tested Enterococcus spp. were resistant to all antimicrobials except for linezolid and tigecycline. Additionally, by employing the CRA and MTP techniques, 76.6% and 100% of the Enterococcus isolates were able to generate biofilms, respectively. In terms of the association between the antibiotic resistance and biofilm’s formation, it was observed that isolates capable of creating strong biofilms were extremely resistant to most of the antibiotics tested. The obtained data showed that all the tested isolates had biofilm-encoding genes. Conclusions: Our research revealed that the biofilm-producing enterococci bacteria that causes urinary tract infections were resistant to antibiotics. Therefore, it is necessary to seek other pharmacological treatments if antibiotic medicine fails.
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Elsilk SE, Khalil MA, Aboshady TA, Alsalmi FA, Ali SS. Streptomyces rochei MS-37 as a Novel Marine Actinobacterium for Green Biosynthesis of Silver Nanoparticles and Their Biomedical Applications. Molecules 2022; 27:7296. [PMID: 36364123 PMCID: PMC9654146 DOI: 10.3390/molecules27217296] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 09/25/2022] [Indexed: 02/13/2024] Open
Abstract
Periodontitis, as one of the most common diseases on a global scale, is a public health concern. Microbial resistance to currently available antimicrobial agents is becoming a growing issue in periodontal treatment. As a result, it is critical to develop effective and environmentally friendly biomedical approaches to overcome such challenges. The investigation of Streptomyces rochei MS-37's performance may be the first of its kind as a novel marine actinobacterium for the green biosynthesis of silver nanoparticles (SNPs) and potentials as antibacterial, anti-inflammatory, antibiofilm, and antioxidant candidates suppressing membrane-associated dental infections. Streptomyces rochei MS-37, a new marine actinobacterial strain, was used in this study for the biosynthesis of silver nanoparticles for various biomedical applications. Surface plasmon resonance spectroscopy showed a peak at 429 nm for the SNPs. The SNPs were spherical, tiny (average 23.2 nm by TEM, 59.4 nm by DLS), very stable (-26 mV), and contained capping agents. The minimum inhibitory concentrations of the SNPs that showed potential antibacterial action ranged from 8 to 128 µg/mL. Periodontal pathogens were used to perform qualitative evaluations of microbial adhesion and bacterial penetration through guided tissue regeneration membranes. The findings suggested that the presence of the SNPs could aid in the suppression of membrane-associated infection. Furthermore, when the anti-inflammatory action of the SNPs was tested using nitric oxide radical scavenging capacity and protein denaturation inhibition, it was discovered that the SNPs were extremely efficient at scavenging nitric oxide free radicals and had a strong anti-denaturation impact. The SNPs were found to be more cytotoxic to CAL27 than to human peripheral blood mononuclear cells (PBMCs), with IC50 values of 81.16 µg/mL in PBMCs and 34.03 µg/mL in CAL27. This study's findings open a new avenue for using marine actinobacteria for silver nanoparticle biosynthesis, which holds great promise for a variety of biomedical applications, in particular periodontal treatment.
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Affiliation(s)
- Sobhy E. Elsilk
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Maha A. Khalil
- Biology Department, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Tamer A. Aboshady
- Oral and Maxillofacial Surgery and Diagnostic Sciences, Faculty of Dentistry, Taif University, Taif 21944, Saudi Arabia
| | - Fatin A. Alsalmi
- Biology Department, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Sameh S. Ali
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
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Younis AB, Haddad Y, Kosaristanova L, Smerkova K. Titanium dioxide nanoparticles: Recent progress in antimicrobial applications. WIRES NANOMEDICINE AND NANOBIOTECHNOLOGY 2022; 15:e1860. [PMID: 36205103 DOI: 10.1002/wnan.1860] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/22/2022] [Accepted: 09/20/2022] [Indexed: 11/05/2022]
Abstract
For decades, the antimicrobial applications of nanoparticles (NPs) have attracted the attention of scientists as a strategy for controlling the ever-increasing threat of multidrug-resistant microorganisms. The photo-induced antimicrobial properties of titanium dioxide (TiO2 ) NPs by ultraviolet (UV) light are well known. This review elaborates on the modern methods and antimicrobial mechanisms of TiO2 NPs and their modifications to better understand and utilize their potential in various biomedical applications. Additional compounds can be grafted onto TiO2 nanomaterial, leading to hybrid metallic or non-metallic materials. To improve the antimicrobial properties, many approaches involving TiO2 have been tested. The results of selected studies from the past few years covering the most recent trends in this field are discussed in this review. There is extensive evidence to show that TiO2 NPs can exhibit certain antimicrobial features with disputable roles of UV light. Hence, they are effective in treating bacterial infections, although the majority of these conclusions came from in vitro studies and in the presence of some additional nanomaterials. The methods of evaluation varied depending on the nature of the research while researchers incorporated different techniques, including determining the minimum inhibitory concentration, cell count, and using disk and well diffusion methods, with a noticeable indication that cell count was the most and dominant criterion used to evaluate the antimicrobial activity. This article is categorized under: Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Therapeutic Approaches and Drug Discovery > Emerging Technologies Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease.
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Affiliation(s)
- Almotasem Bellah Younis
- Department of Chemistry and Biochemistry Mendel University in Brno Brno Czech Republic
- Central European Institute of Technology Brno University of Technology Brno Czech Republic
| | - Yazan Haddad
- Department of Chemistry and Biochemistry Mendel University in Brno Brno Czech Republic
- Central European Institute of Technology Brno University of Technology Brno Czech Republic
| | - Ludmila Kosaristanova
- Department of Chemistry and Biochemistry Mendel University in Brno Brno Czech Republic
- Central European Institute of Technology Brno University of Technology Brno Czech Republic
| | - Kristyna Smerkova
- Department of Chemistry and Biochemistry Mendel University in Brno Brno Czech Republic
- Central European Institute of Technology Brno University of Technology Brno Czech Republic
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11
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Parvin MS, Ali MY, Mandal AK, Talukder S, Islam MT. Sink survey to investigate multidrug resistance pattern of common foodborne bacteria from wholesale chicken markets in Dhaka city of Bangladesh. Sci Rep 2022; 12:10818. [PMID: 35752640 PMCID: PMC9233690 DOI: 10.1038/s41598-022-14883-7] [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: 08/26/2021] [Accepted: 06/14/2022] [Indexed: 12/05/2022] Open
Abstract
Antimicrobial resistance (AMR) among foodborne bacteria is a well-known public health problem. A sink survey was conducted to determine the AMR pattern of common foodborne bacteria in cloacal swab of broiler chickens and sewage samples from five wholesale chicken markets of Dhaka city in Bangladesh. Bacteria were identified by culture-based and molecular methods, and subjected to antimicrobial susceptibility testing. Resistance genes were identified by multiplex PCR and sequencing. Multidrug resistance (MDR) was observed in 93.2% of E. coli, 100% of Salmonella spp., and 97.2% of S. aureus from cloacal swab samples. For sewage samples, 80% of E. coli, and 100% of Salmonella and S. aureus showed MDR. Noteworthy, 8.3% of S. aureus from cloacal swab samples showed possible extensively drug resistance. Antimicrobial resistance genes (beta-lactamase—blaTEM, blaSHV; quinolone resistance gene—qnrS) were detected in a number of E. coli and Salmonella isolates from cloacal swab and sewage samples. The methicillin resistance gene (mecA) was detected in 47.2% and 25% S. aureus from cloacal swab and sewage samples, respectively. The findings envisage the potential public health risk and environmental health hazard through spillover of common foodborne MDR bacteria.
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Affiliation(s)
- Mst Sonia Parvin
- Population Medicine and AMR Laboratory, Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Md Yamin Ali
- Population Medicine and AMR Laboratory, Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.,Department of Livestock Services, Farmgate, Dhaka, 1215, Bangladesh
| | - Amit Kumar Mandal
- Population Medicine and AMR Laboratory, Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Sudipta Talukder
- Population Medicine and AMR Laboratory, Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Md Taohidul Islam
- Population Medicine and AMR Laboratory, Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
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12
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Khalil MA, El-Zaher EHA, El-Salam OA, Ali SS. Exploring the therapeutic potential of acetonic plant extracts in the healing of skin wounds infected with multidrug resistant pathogens. J Appl Biomed 2022; 20:45-55. [DOI: 10.32725/jab.2022.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 05/26/2022] [Indexed: 11/05/2022] Open
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13
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Baholet D, Skalickova S, Batik A, Malyugina S, Skladanka J, Horky P. Importance of Zinc Nanoparticles for the Intestinal Microbiome of Weaned Piglets. Front Vet Sci 2022; 9:852085. [PMID: 35720843 PMCID: PMC9201420 DOI: 10.3389/fvets.2022.852085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/18/2022] [Indexed: 11/13/2022] Open
Abstract
The scientific community is closely monitoring the replacement of antibiotics with doses of ZnO in weaned piglets. Since 2022, the use of zinc in medical doses has been banned in the European Union. Therefore, pig farmers are looking for other solutions. Some studies have suggested that zinc nanoparticles might replace ZnO for the prevention of diarrhea in weaning piglets. Like ZnO, zinc nanoparticles are effective against pathogenic microorganisms, e.g., Enterobacteriaceae family in vitro and in vivo. However, the effect on probiotic Lactobacillaceae appears to differ for ZnO and zinc nanoparticles. While ZnO increases their numbers, zinc nanoparticles act in the opposite way. These phenomena have been also confirmed by in vitro studies that reported a strong antimicrobial effect of zinc nanoparticles against Lactobacillales order. Contradictory evidence makes this topic still controversial, however. In addition, zinc nanoparticles vary in their morphology and properties based on the method of their synthesis. This makes it difficult to understand the effect of zinc nanoparticles on the intestinal microbiome. This review is aimed at clarifying many circumstances that may affect the action of nanoparticles on the weaning piglets' microbiome, including a comprehensive overview of the zinc nanoparticles in vitro effects on bacterial species occurring in the digestive tract of weaned piglets.
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Affiliation(s)
- Daria Baholet
- Department of Animal Nutrition and Forage Production, Mendel University in Brno, Brno, Czechia
| | - Sylvie Skalickova
- Department of Animal Nutrition and Forage Production, Mendel University in Brno, Brno, Czechia
| | - Andrej Batik
- Department of Animal Morphology, Physiology and Genetics, Mendel University in Brno, Brno, Czechia
| | - Svetlana Malyugina
- Department of Animal Nutrition and Forage Production, Mendel University in Brno, Brno, Czechia
| | - Jiri Skladanka
- Department of Animal Nutrition and Forage Production, Mendel University in Brno, Brno, Czechia
| | - Pavel Horky
- Department of Animal Nutrition and Forage Production, Mendel University in Brno, Brno, Czechia
- *Correspondence: Pavel Horky
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14
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Khan SS, Ullah I, Ullah S, An R, Xu H, Nie K, Liu C, Liu L. Recent Advances in the Surface Functionalization of Nanomaterials for Antimicrobial Applications. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6932. [PMID: 34832332 PMCID: PMC8623114 DOI: 10.3390/ma14226932] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/05/2021] [Accepted: 11/10/2021] [Indexed: 12/16/2022]
Abstract
Innovations in nanotechnology have had an immense impact on medicine, such as in drug delivery, tissue engineering, and medical devices that combat different pathogens. The pathogens that may cause biofilm-associated nosocomial diseases are multidrug-resistant (MDR) bacteria, such as Escherichia coli (E. coli), Pseudomonas aeruginosa (P. aeruginosa), Staphylococcus aureus (S. aureus), including both Gram-positive and Gram-negative bacterial species. About 65-80% of infections are caused by biofilm-associated pathogens creating a move in the international community toward developing antimicrobial therapies to eliminate such pathogenic infections. Several nanomaterials (NMs) have been discovered and significantly employed in various antipathogenic therapies. These NMs have unique properties of singlet oxygen production, high absorption of near-infrared irradiation, and reasonable conversion of light to heat. In this review, functionalized NPs that combat different pathogenic infections are introduced. This review highlights NMs that combat infections caused by multidrug-resistant (MDR) and other pathogenic microorganisms. It also highlights the biomedical application of NPs with regard to antipathogenic activities.
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Affiliation(s)
| | | | | | | | | | | | | | - Luo Liu
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China; (S.S.K.); (I.U.); (S.U.); (R.A.); (H.X.); (K.N.); (C.L.)
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15
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Ali SS, Al-Tohamy R, Koutra E, Moawad MS, Kornaros M, Mustafa AM, Mahmoud YAG, Badr A, Osman MEH, Elsamahy T, Jiao H, Sun J. Nanobiotechnological advancements in agriculture and food industry: Applications, nanotoxicity, and future perspectives. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148359. [PMID: 34147795 DOI: 10.1016/j.scitotenv.2021.148359] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/05/2021] [Accepted: 06/06/2021] [Indexed: 05/12/2023]
Abstract
The high demand for sufficient and safe food, and continuous damage of environment by conventional agriculture are major challenges facing the globe. The necessity of smart alternatives and more sustainable practices in food production is crucial to confront the steady increase in human population and careless depletion of global resources. Nanotechnology implementation in agriculture offers smart delivery systems of nutrients, pesticides, and genetic materials for enhanced soil fertility and protection, along with improved traits for better stress tolerance. Additionally, nano-based sensors are the ideal approach towards precision farming for monitoring all factors that impact on agricultural productivity. Furthermore, nanotechnology can play a significant role in post-harvest food processing and packaging to reduce food contamination and wastage. In this review, nanotechnology applications in the agriculture and food sector are reviewed. Implementations of nanotechnology in agriculture have included nano- remediation of wastewater for land irrigation, nanofertilizers, nanopesticides, and nanosensors, while the beneficial effects of nanomaterials (NMs) in promoting genetic traits, germination, and stress tolerance of plants are discussed. Furthermore, the article highlights the efficiency of nanoparticles (NPs) and nanozymes in food processing and packaging. To this end, the potential risks and impacts of NMs on soil, plants, and human tissues and organs are emphasized in order to unravel the complex bio-nano interactions. Finally, the strengths, weaknesses, opportunities, and threats of nanotechnology are evaluated and discussed to provide a broad and clear view of the nanotechnology potentials, as well as future directions for nano-based agri-food applications towards sustainability.
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Affiliation(s)
- Sameh S Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Rania Al-Tohamy
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Eleni Koutra
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504 Patras, Greece; INVALOR: Research Infrastructure for Waste Valorization and Sustainable Management, University Campus, 26504 Patras, Greece
| | - Mohamed S Moawad
- Department of Toxicology and Forensic Medicine, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt; Nanoscience Program, Zewail City of Science and Technology, 6th of October, Giza 12588, Egypt
| | - Michael Kornaros
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504 Patras, Greece; INVALOR: Research Infrastructure for Waste Valorization and Sustainable Management, University Campus, 26504 Patras, Greece
| | - Ahmed M Mustafa
- State Key Laboratory of Pollution Control and Resourses Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Department of Agricultural Engineering, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt
| | - Yehia A-G Mahmoud
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Abdelfattah Badr
- Botany and Microbiology Department, Faculty of Science, Helwan University, Ain Helwan, Cairo, Egypt
| | - Mohamed E H Osman
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Tamer Elsamahy
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Haixin Jiao
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
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16
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Xu M, Liu Z, Song Y, Zhao R, Yang Z, Zhao H, Sun X, Gu Y, Yang H. Analysis of drug sensitivity of Escherichia Coli O157H7. Biomed Microdevices 2021; 23:29. [PMID: 33974162 DOI: 10.1007/s10544-021-00565-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2021] [Indexed: 10/21/2022]
Abstract
Sensitive and rapid tests of Escherichia coli drug sensitivity is very important for health of human and animals. An E. coli immunosensor was built based on electrochemical detection and immune detection technologies, through pretreating screen-printed electrodes, and analyzing the optimal reaction concentration of antigen antibody binding with the AC impedance method. Based on the detection system combining the immunosensor and electrochemical workstation, tests were carried out to measure the accuracy of E. coli concentration and drug sensitivity, and error of the detection system was calibrated in accordance with data from the electrochemical workstation. E. coli O157:H7 can be detected in the range of 103 cfu/ml ~ 1012 cfu/ml, and the detection error controlled within 5%. Results from the electrochemical workstation and those from the detection device were consistent, and both demonstrated a greater inhibitory effect of antibiotics on E. coli than on Bacillus subtilis. The electrochemical detection system is highly efficient and accurate, and could be widely applied to E. coli drug sensitivity tests in clinical medicine.
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Affiliation(s)
- Minzi Xu
- College of engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Zhenyu Liu
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China.
| | - Yanbo Song
- College of life sciences, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Runan Zhao
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Zheng Yang
- College of engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Huijin Zhao
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Xiaobing Sun
- College of engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Yaning Gu
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Huifei Yang
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
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17
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Hussein HM, Ghafoor DD, Omer KM. Room temperature and surfactant free synthesis of zinc peroxide (ZnO2) nanoparticles in methanol with highly efficient antimicrobials. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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18
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Ali SS, Moawad MS, Hussein MA, Azab M, Abdelkarim EA, Badr A, Sun J, Khalil M. Efficacy of metal oxide nanoparticles as novel antimicrobial agents against multi-drug and multi-virulent Staphylococcus aureus isolates from retail raw chicken meat and giblets. Int J Food Microbiol 2021; 344:109116. [PMID: 33676332 DOI: 10.1016/j.ijfoodmicro.2021.109116] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 01/15/2021] [Accepted: 02/11/2021] [Indexed: 12/11/2022]
Abstract
Staphylococcus aureus is among the most common zoonotic pathogens originating from animals consumed as food, especially raw chicken meat (RCM). As far as we know, this might be the first report that explores the efficacy of metal oxide nanoparticles (MONPs), such as zinc peroxide nanoparticles (ZnO2-NPs), zinc oxide nanoparticles (ZnO-NPs), and titanium dioxide nanoparticles (TiO2-NPs) against multidrug resistant (MDR) and/or pandrug resistant (PDR) S. aureus strains with a strong biofilm-producing ability isolated from RCM and giblets. The overall prevalence of coagulase-positive staphylococci was 21%, with a contamination level range between 102 and 104 CFU/g. The incidence of virulence genes See (21/36), pvl (16/36), clfA (15/36), sec (12/36), tst (12/36), and sea (11/36) among S. aureus strains were relatively higher those of seb, sed, fnbA, and fnbB. For antimicrobial resistance gene distribution, most strains harbored the blaZ gene (25/36), aacA-aphD gene (24/36), mecA gene (22/36), vanA gene (20/36), and apmA gene (20/36) confirmed the prevalence of MDR among S. aureus of RCM products. However, cfr (11/36), spc (9/36), and aadE (7/36) showed a relatively lower existence. The data of antibiogram resistance profiles was noticeably heterogeneous (25 patterns) with 32 MDR and four PDR S. aureus strains. All tested strains had a very high MAR index value (>0.2) except the P11 pattern (GEN, MXF, PMB), which showed a MAR index of 0.19. Among the strong biofilm-producing ability (BPA), 14 (70%) strains were isolated from wet markets, while only six strong BPA strains were isolated from supermarkets. The mean values of BPA ranged from 2.613 ± 0.04 to 11.013 ± 0.05. Clearly, ZnO2-NPs show significant inhibitory activity against S. aureus strains compared with those produced by the action of ZnO-NPs and TiO2-NPs. The results of anti-inflammatory activity suggest ZnO2-NPs as a lead compound for designing an alternative antimicrobial agent against drug-resistant and strong biofilm-producing S. aureus isolates from retail RCM and giblets.
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Affiliation(s)
- Sameh S Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
| | - Mohamed S Moawad
- Department of Toxicology and Forensic Sciences, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Mohamed A Hussein
- Food Control Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Maha Azab
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Esraa A Abdelkarim
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Food Control Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Abdelfattah Badr
- Botany and Microbiology Department, Faculty of Science, Helwan University, Ain Helwan, Cairo, Egypt
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Maha Khalil
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
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