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Ozma MA, Moaddab SR, Hosseini H, Khodadadi E, Ghotaslou R, Asgharzadeh M, Abbasi A, Kamounah FS, Aghebati Maleki L, Ganbarov K, Samadi Kafil H. A critical review of novel antibiotic resistance prevention approaches with a focus on postbiotics. Crit Rev Food Sci Nutr 2024; 64:9637-9655. [PMID: 37203933 DOI: 10.1080/10408398.2023.2214818] [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] [Indexed: 05/20/2023]
Abstract
Antibiotic resistance is a significant public health issue, causing illnesses that were once easily treatable with antibiotics to develop into dangerous infections, leading to substantial disability and even death. To help fight this growing threat, scientists are developing new methods and techniques that play a crucial role in treating infections and preventing the inappropriate use of antibiotics. These effective therapeutic methods include phage therapies, quorum-sensing inhibitors, immunotherapeutics, predatory bacteria, antimicrobial adjuvants, haemofiltration, nanoantibiotics, microbiota transplantation, plant-derived antimicrobials, RNA therapy, vaccine development, and probiotics. As a result of the activity of probiotics in the intestine, compounds derived from the structure and metabolism of these bacteria are obtained, called postbiotics, which include multiple agents with various therapeutic applications, especially antimicrobial effects, by using different mechanisms. These compounds have been chosen in particular because they don't promote the spread of antibiotic resistance and don't include substances that can increase antibiotic resistance. This manuscript provides an overview of the novel approaches to preventing antibiotic resistance with emphasis on the various postbiotic metabolites derived from the gut beneficial microbes, their activities, recent related progressions in the food and medical fields, as well as concisely giving an insight into the new concept of postbiotics as "hyperpostbiotic".
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Affiliation(s)
- Mahdi Asghari Ozma
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyyed Reza Moaddab
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hedayat Hosseini
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ehsaneh Khodadadi
- Material Science and Engineering, Department of Chemistry and Biochemistry, University of Arkansas-Fayetteville, Fayetteville, AR, USA
| | - Reza Ghotaslou
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Asgharzadeh
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amin Abbasi
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fadhil S Kamounah
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | | | - Khudaverdi Ganbarov
- Research Laboratory of Microbiology and Virology, Baku State University, Baku, Republic of Azerbaijan
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Kadkhoda H, Gholizadeh P, Samadi Kafil H, Ghotaslou R, Pirzadeh T, Ahangarzadeh Rezaee M, Nabizadeh E, Feizi H, Aghazadeh M. Role of CRISPR-Cas systems and anti-CRISPR proteins in bacterial antibiotic resistance. Heliyon 2024; 10:e34692. [PMID: 39149034 PMCID: PMC11325803 DOI: 10.1016/j.heliyon.2024.e34692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 07/08/2024] [Accepted: 07/15/2024] [Indexed: 08/17/2024] Open
Abstract
The emergence and development of antibiotic resistance in bacteria is a serious threat to global public health. Antibiotic resistance genes (ARGs) are often located on mobile genetic elements (MGEs). They can be transferred among bacteria by horizontal gene transfer (HGT), leading to the spread of drug-resistant strains and antibiotic treatment failure. CRISPR (clustered regularly interspaced short palindromic repeats)-Cas (CRISPR-associated genes) is one of the many strategies bacteria have developed under long-term selection pressure to restrict the HGT. CRISPR-Cas systems exist in about half of bacterial genomes and play a significant role in limiting the spread of antibiotic resistance. On the other hand, bacteriophages and other MGEs encode a wide range of anti-CRISPR proteins (Acrs) to counteract the immunity of the CRISPR-Cas system. The Acrs could decrease the CRISPR-Cas system's activity against phages and facilitate the acquisition of ARGs and virulence traits for bacteria. This review aimed to assess the relationship between the CRISPR-Cas systems and Acrs with bacterial antibiotic resistance. We also highlighted the CRISPR technology and Acrs to control and prevent antibacterial resistance. The CRISPR-Cas system can target nucleic acid sequences with high accuracy and reliability; therefore, it has become a novel gene editing and gene therapy tool to prevent the spread of antibiotic resistance. CRISPR-based approaches may pave the way for developing smart antibiotics, which could eliminate multidrug-resistant (MDR) bacteria and distinguish between pathogenic and beneficial microorganisms. Additionally, the engineered anti-CRISPR gene-containing phages in combination with antibiotics could be used as a cutting-edge treatment approach to reduce antibiotic resistance.
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Affiliation(s)
- Hiva Kadkhoda
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pourya Gholizadeh
- Digestive Disease Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
- Zoonoses Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Hossein Samadi Kafil
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Ghotaslou
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Tahereh Pirzadeh
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Ahangarzadeh Rezaee
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Edris Nabizadeh
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hadi Feizi
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Medical Microbiology, Aalinasab Hospital, Social Security Organization, Tabriz, Iran
| | - Mohammad Aghazadeh
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Hajiagha MN, Kafil HS. Efflux pumps and microbial biofilm formation. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2023:105459. [PMID: 37271271 DOI: 10.1016/j.meegid.2023.105459] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/25/2023] [Accepted: 05/27/2023] [Indexed: 06/06/2023]
Abstract
Biofilm-related infections are resistant forms of pathogens that are regarded as a medical problem, particularly due to the spread of multiple drug resistance. One of the factors associated with biofilm drug resistance is the presence of various types of efflux pumps in bacteria. Efflux pumps also play a role in biofilm formation by influencing Physical-chemical interactions, mobility, gene regulation, quorum sensing (QS), extracellular polymeric substances (EPS), and toxic compound extrusion. According to the findings of studies based on efflux pump expression analysis, their role in the anatomical position within the biofilm will differ depending on the biofilm formation stage, encoding gene expression level, the type and concentration of substrate. In some cases, the function of the efflux pumps can overlap with each other, so it seems necessary to accurate identify the efflux pumps of biofilm-forming bacteria along with their function in this process. Such studies will help to choose treatment strategy, at least in combination with antibiotics. Furthermore, if the goal of treatment is an efflux pump manipulation, we should not limit it to inhibition.
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Affiliation(s)
- Mahdyeh Neghabi Hajiagha
- Department of Microbiology, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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de Oliveira Santos IC, da Conceiçāo Neto OC, da Costa BS, Teixeira CBT, da Silva Pontes L, Silveira MC, Rocha-de-Souza CM, Carvalho-Assef APD. Evaluation of phenotypic detection of carbapenemase-producing Pseudomonas spp. from clinical isolates. Braz J Microbiol 2023; 54:135-141. [PMID: 36327041 PMCID: PMC9943810 DOI: 10.1007/s42770-022-00857-4] [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: 03/02/2022] [Accepted: 10/12/2022] [Indexed: 11/05/2022] Open
Abstract
Carbapenems are considered last-resort antibiotics for the treatment of infections caused by multidrug-resistant Gram-negative bacteria. Although the main mechanism of carbapenem-resistance in Pseudomonas aeruginosa is the loss of OprD porin, carbapenemases continue to be a problem worldwide. The aim of this study was to evaluate the performance of phenotypic tests (Carba NP, Blue Carba, and mCIM/eCIM) for detection of carbapenemase-producing Pseudomonas spp. in Brazil. One hundred twenty-seven Pseudomonas spp. clinical isolates from different Brazilian states were submitted to phenotypic and molecular carbapenemase detection. A total of 90 carbapenemase-producing P. aeruginosa and 5 Pseudomonas putida (35, blaVIM-2; 17, blaSPM-1; 2, blaIMP-10; 1, blaVIM-24; 1, blaNDM-1; 39, blaKPC-2). The phenotypic Carba NP, Blue Carba, and mCIM/eCIM showed sensitivity of 94.7%, 93.6%, and 93.6%, and specificity of 90.6%, 100%, and 96.8%, respectively. However, only the Carba NP presented the highest sensitivity and showed the ability in differentiating the carbapenemases between class A and class B using EDTA. Blue Carba failed to detect most of the class B carbapenemases, having the worst performance using EDTA. Our results show changes in the epidemiology of the spread of carbapenemases and the importance of their detection by phenotypic and genotypic tests. Such, it is essential to use analytical tools that faithfully detect bacterial resistance in vitro in a simple, sensitive, rapid, and cost-effective way. Much effort must be done to improve the current tests and for the development of new ones.
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Affiliation(s)
- Ivson Cassiano de Oliveira Santos
- Laboratório de Pesquisa Em Infecção Hospitalar (LAPIH), Instituto Oswaldo Cruz - FIOCRUZ, Fundação Oswaldo Cruz, Av. Brasil, 4365, Rio de Janeiro, RJ, 21045900, Brazil
| | - Orlando Carlos da Conceiçāo Neto
- Laboratório de Pesquisa Em Infecção Hospitalar (LAPIH), Instituto Oswaldo Cruz - FIOCRUZ, Fundação Oswaldo Cruz, Av. Brasil, 4365, Rio de Janeiro, RJ, 21045900, Brazil
| | - Bianca Santos da Costa
- Laboratório de Pesquisa Em Infecção Hospitalar (LAPIH), Instituto Oswaldo Cruz - FIOCRUZ, Fundação Oswaldo Cruz, Av. Brasil, 4365, Rio de Janeiro, RJ, 21045900, Brazil
| | - Camila Bastos Tavares Teixeira
- Laboratório de Pesquisa Em Infecção Hospitalar (LAPIH), Instituto Oswaldo Cruz - FIOCRUZ, Fundação Oswaldo Cruz, Av. Brasil, 4365, Rio de Janeiro, RJ, 21045900, Brazil
| | - Leilane da Silva Pontes
- Laboratório de Pesquisa Em Infecção Hospitalar (LAPIH), Instituto Oswaldo Cruz - FIOCRUZ, Fundação Oswaldo Cruz, Av. Brasil, 4365, Rio de Janeiro, RJ, 21045900, Brazil
| | - Melise Chaves Silveira
- Laboratório de Pesquisa Em Infecção Hospitalar (LAPIH), Instituto Oswaldo Cruz - FIOCRUZ, Fundação Oswaldo Cruz, Av. Brasil, 4365, Rio de Janeiro, RJ, 21045900, Brazil
| | - Cláudio Marcos Rocha-de-Souza
- Laboratório de Pesquisa Em Infecção Hospitalar (LAPIH), Instituto Oswaldo Cruz - FIOCRUZ, Fundação Oswaldo Cruz, Av. Brasil, 4365, Rio de Janeiro, RJ, 21045900, Brazil
| | - Ana Paula D'Alincourt Carvalho-Assef
- Laboratório de Pesquisa Em Infecção Hospitalar (LAPIH), Instituto Oswaldo Cruz - FIOCRUZ, Fundação Oswaldo Cruz, Av. Brasil, 4365, Rio de Janeiro, RJ, 21045900, Brazil.
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Noumi E, Ahmad I, Bouali N, Patel H, Ghannay S, ALrashidi AA, Abdulhakeem MA, Patel M, Ceylan O, Badraoui R, Mousa Elayyan AE, Adnan M, Kadri A, Snoussi M. Thymus musilii Velen. Methanolic Extract: In Vitro and In Silico Screening of Its Antimicrobial, Antioxidant, Anti-Quorum Sensing, Antibiofilm, and Anticancer Activities. Life (Basel) 2022; 13:62. [PMID: 36676011 PMCID: PMC9862435 DOI: 10.3390/life13010062] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
Thymus musilii Velen. is a rare plant species cultivated in the Ha'il region (Saudi Arabia) under greenhouse conditions. In this work, we described, for the first time, the phytochemical composition, antimicrobial, antioxidant, anti-quorum sensing, and anticancer activities of T. musilii methanolic extract using both experimental and computational approaches. The obtained results showed the identification of eight small-like peptides and eighteen phyto-compounds by using high-resolution liquid chromatography-mass spectrometry (HR-LCMS) dominated mainly by compounds belonging to isoprenoid, fatty acyl, flavonoid, and alkaloid classes. The tested extracts exhibited high antifungal and antibacterial activity with the mean diameter of growth inhibition zones ranging from 12.33 ± 0.57 mm (Pseudomonas aeruginosa ATCC 27853) to 29.33 ± 1.15 mm (Candida albicans ATCC 10231). Low minimal inhibitory concentrations were recorded for the tested micro-organisms ranging from 0.781 mg/mL to 12.5 mg/mL. While higher doses were necessary to completely kill all tested bacterial and fungal strains. Thyme extract was able to scavenge DPPH•, ABTS•+, β-carotene, and FRAP free radicals, and the IC50 values were 0.077 ± 0.0015 mg/mL, 0.040 ± 0.011 mg/mL, 0.287 ± 0.012 mg/mL, and 0.106 ± 0.007 mg/mL, respectively. The highest percentage of swarming and swimming inhibition was recorded at 100 µg/mL with 39.73 ± 1.5% and 25.18 ± 1%, respectively. The highest percentage of biofilm inhibition was recorded at 10 mg/mL for S. typhimurium ATCC 14028 (53.96 ± 4.21%) and L. monocytogenes ATCC 7644 (49.54 ± 4.5 mg/mL). The in silico docking study revealed that the observed antimicrobial, antioxidant, and anticancer activities of the constituent compounds of T. musilii are thermodynamically feasible, notably, such as those of the tripeptides (Asn-Met-His, His-Cys-Asn, and Phe-His-Gln), isoprenoids (10-Hydroxyloganin), and diterpene glycosides (4-Ketoretinoic acid glucuronide).
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Affiliation(s)
- Emira Noumi
- Department of Biology, College of Science, University of Ha'il, P.O. Box 2440, Hail 81451, Saudi Arabia
- Laboratory of Genetics, Biodiversity and Valorization of Bio-Resources (LR11ES41), Higher Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar Haddad, BP74, Monastir 5000, Tunisia
| | - Iqrar Ahmad
- Department of Pharmaceutical Chemistry, Prof. Ravindra Nikam College of Pharmacy, Gondur, Dhule 424002, India
| | - Nouha Bouali
- Department of Biology, College of Science, University of Ha'il, P.O. Box 2440, Hail 81451, Saudi Arabia
| | - Harun Patel
- Division of Computer Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur 425405, India
| | - Siwar Ghannay
- Department of Chemistry, College of Science, Qassim University, P.O. Box 6688, Buraidah 51452, Saudi Arabia
| | - Ayshah Aysh ALrashidi
- Department of Biology, College of Science, University of Ha'il, P.O. Box 2440, Hail 81451, Saudi Arabia
| | - Mohammad A Abdulhakeem
- Department of Biology, College of Science, University of Ha'il, P.O. Box 2440, Hail 81451, Saudi Arabia
| | - Mitesh Patel
- Centre of Research for Development, Department of Biotechnology, Parul Institute of Applied Sciences, Parul University, Vadodara 391760, India
| | - Ozgur Ceylan
- Ula Ali Kocman Vocational School, Mugla Sitki Kocman University, Mugla 48147, Turkey
| | - Riadh Badraoui
- Department of Biology, College of Science, University of Ha'il, P.O. Box 2440, Hail 81451, Saudi Arabia
- Department of Histo Embryology and Cytogenetics, Medicine Faculty of Sfax, University of Sfax, Road of Majida Boulia, Sfax 3029, Tunisia
| | - Afnan Elayyan Mousa Elayyan
- Department of Clinical Laboratory Science, College of Applied Sciences-Qurayyat, Jouf University, P.O. Box 2014, Sakaka 72388, Saudi Arabia
| | - Mohd Adnan
- Department of Biology, College of Science, University of Ha'il, P.O. Box 2440, Hail 81451, Saudi Arabia
| | - Adel Kadri
- Faculty of Science and Arts in Baljurashi, Albaha University, P.O. Box 1988, Albaha 65527, Saudi Arabia
- Department of Chemistry, Faculty of Science of Sfax, University of Sfax, B.P. 1171, Sfax 3000, Tunisia
| | - Mejdi Snoussi
- Department of Biology, College of Science, University of Ha'il, P.O. Box 2440, Hail 81451, Saudi Arabia
- Laboratory of Genetics, Biodiversity and Valorization of Bio-Resources (LR11ES41), Higher Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar Haddad, BP74, Monastir 5000, Tunisia
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Vásquez-Ponce F, Dantas K, Becerra J, Melocco G, Esposito F, Cardoso B, Rodrigues L, Lima K, de Lima AV, Sellera FP, Mattos R, Trevisoli L, Vianello MA, Sincero T, Di Conza J, Vespero E, Gutkind G, Sampaio J, Lincopan N. Detecting KPC-2 and NDM-1 Coexpression in Klebsiella pneumoniae Complex from Human and Animal Hosts in South America. Microbiol Spectr 2022; 10:e0115922. [PMID: 35980188 PMCID: PMC9604071 DOI: 10.1128/spectrum.01159-22] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/12/2022] [Indexed: 12/30/2022] Open
Abstract
Reports of Gram-negative bacteria harboring multiple carbapenemase genes have increased in South America, leading to an urgent need for appropriate microbiological diagnosis. We evaluated phenotypic methods for detecting Klebsiella pneumoniae carbapenemase 2 (KPC-2) and New Delhi metallo-β-lactamase-1 (NDM-1) coexpression in members of the K. pneumoniae complex (i.e., K. pneumoniae, K. quasipneumoniae, and K. variicola) isolated from human and animal hosts, based on inhibition of ceftazidime-avibactam (CZA) and aztreonam (ATM) by dipicolinic acid (DPA), EDTA, or avibactam (AVI). While the presence of blaKPC-2 and blaNDM-1 genes was confirmed by whole-genome sequencing, PCR, and/or GeneXpert, coexpression was successfully detected based on the following: (i) a ≥5-mm increase in the zone diameter of ATM (30 µg) disks plus AVI (4 or 20 µg) and ≥4-mm and ≥10-mm increases in the zone diameters for "CZA 50" (30 µg ceftazidime [CAZ] and 20 µg AVI) and "CZA 14" (10 µg CAZ and 4 µg AVI) disks, respectively, when we added DPA (1 mg/disk) or EDTA (5 mM) in a combined disk test (CDT); (ii) a positive ghost zone (synergism) between ATM (30 µg) and CZA 50 disks and between CZA 50 and DPA (1 mg) disks, using the double-disk synergy test (DDST) at a disk-disk distance of 2.5 cm; (iii) ≥3-fold MIC reductions of ATM and CZA in the presence of AVI (4 µg/mL), DPA (500 µg/mL), or EDTA (320 µg/mL); and (iv) immunochromatography. Although our results demonstrated that inhibition by AVI, DPA, and EDTA may provide simple and inexpensive methods for the presumptive detection of coexpression of KPC-2 and NDM-1 in members of the K. pneumoniae complex, additional studies are necessary to confirm the accuracy of these methodologies by testing other Gram-negative bacterial species and other KPC and NDM variants coexpressed by WHO critical priority pathogens detected worldwide. IMPORTANCE Alerts regarding the emergence and increase of combinations of carbapenemases in Enterobacterales in Latin America and the Caribbean have recently been issued by PAHO and WHO, emphasizing the importance of appropriate microbiological diagnosis and the effective and articulated implementation of infection prevention and control programs. In this study, we evaluated methods based on inhibition of ceftazidime (CAZ), ceftazidime-avibactam (CZA), and aztreonam (ATM) by dipicolinic acid (DPA), EDTA, and avibactam (AVI) inhibitors for the identification of KPC-2- and NDM-1-coexpression in members of the K. pneumoniae complex recovered from human and animal hosts. Our results demonstrate that inhibition by AVI, DPA, and EDTA may provide simple and inexpensive methods for the presumptive detection of coexpression of KPC-2 and NDM-1 in members of the K. pneumoniae complex.
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Affiliation(s)
- Felipe Vásquez-Ponce
- Department of Microbiology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Karine Dantas
- Department of Microbiology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Johana Becerra
- Department of Microbiology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Gregory Melocco
- Department of Clinical Analysis, School of Pharmacy, Universidade de São Paulo, São Paulo, Brazil
| | - Fernanda Esposito
- Department of Clinical Analysis, School of Pharmacy, Universidade de São Paulo, São Paulo, Brazil
| | - Brenda Cardoso
- Department of Microbiology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Larissa Rodrigues
- Department of Microbiology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Keila Lima
- Department of Clinical Analysis, School of Pharmacy, Universidade de São Paulo, São Paulo, Brazil
| | - Aline V. de Lima
- Department of Clinical Analysis, School of Pharmacy, Universidade de São Paulo, São Paulo, Brazil
| | - Fábio P. Sellera
- Department of Internal Medicine, School of Veterinary Medicine and Animal Science, Universidade de São Paulo, São Paulo, Brazil
- School of Veterinary Medicine, Metropolitan University of Santos, Santos, Brazil
| | | | | | | | - Thais Sincero
- Department of Clinical Analysis, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Jose Di Conza
- Facultad de Farmacia y Bioquímica, Instituto de Investigaciones en Bacteriologia y Virología Molecular, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Eliana Vespero
- Department of Pathology, Clinical and Toxicological Analysis, Health Sciences Center, University Hospital of Londrina, Paraná, Brazil
| | - Gabriel Gutkind
- Facultad de Farmacia y Bioquímica, Instituto de Investigaciones en Bacteriologia y Virología Molecular, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Jorge Sampaio
- Department of Clinical Analysis, School of Pharmacy, Universidade de São Paulo, São Paulo, Brazil
- Fleury Medicine and Health, Microbiology Section, São Paulo, Brazil
| | - Nilton Lincopan
- Department of Microbiology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
- Department of Clinical Analysis, School of Pharmacy, Universidade de São Paulo, São Paulo, Brazil
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7
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Use of the Combined Modified Carbapenem Inactivation Method and EDTA-modified Carbapenem Inactivation Method for Detection of Carbapenemase-Producing Enterobacteriaceae Causing Ventilator-associated Respiratory Infections. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2022. [DOI: 10.22207/jpam.16.2.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
There is an alarming rise in carbapenem-resistant Enterobacteriaceae (CRE) causing nosocomial infections such as ventilator-associated respiratory infections (VARIs). The use of rapid phenotypic methods for the detection and differentiation of carbapenemases elaborated by these CRE would be helpful in providing timely empirical therapeutic options for management of these infections and preventing spread of these CRE strains in hospital settings. Hence, this study aimed to detect CRE among pathogens isolated from the endotracheal secretions recieved from suspected cases of VARIs and differentiate carbapenemases elaborated by these CRE using combined phenotypic methods, such as the modified carbapenem inactivation method (mCIM) and EDTA modified CIM (eCIM). This observational study was conducted over a period of 1 year in the Department of Microbiology and the intensive care unit of a tertiary care center. Carbapenem resistance was found in 75% of Klebsiella pneumoniae isolates and 50% of Escherichia coli isolates, of which 58.4% were metallo-β-lactamases and 41.6% were serine carbapenemase producers. In conclusion, the combination of the mCIM and eCIM could be useful as an epidemiological tool and be considered essential in deciding the initial antibiotic therapy, help reduce morbidity and mortality associated with VARIs, and guide hospital infection control practices.
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Kazeminava F, Javanbakht S, Nouri M, Adibkia K, Ganbarov K, Yousefi M, Ahmadi M, Gholizadeh P, Kafil HS. Electrospun nanofibers based on carboxymethyl cellulose/polyvinyl alcohol as a potential antimicrobial wound dressing. Int J Biol Macromol 2022; 214:111-119. [PMID: 35640851 DOI: 10.1016/j.ijbiomac.2022.05.175] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/15/2022] [Accepted: 05/26/2022] [Indexed: 11/05/2022]
Abstract
In this work, citric acid-based quantum dots (CA-QDs) as a novel and safe crosslinked agent was applied in different feeding ratios (5-15 wt%) to synthesize carboxymethyl cellulose/polyvinyl alcohol (CMC/PVA) nanofibers (NFs) for the first time. Colistin (CL) as an antibacterial agent was also loaded (2 w/w%) during the synthesizing process of CMC/PVA electrospun NFs to trigger antimicrobial properties. The morphological, hydrophilic, and mechanical properties of the prepared NFs were fully investigated with different techniques. The electrospun NFs with crosslinking ratios of 10 wt% CA-QDs revealed appropriate mechanical properties. According to cell culture data, the prepared NFs demonstrated good cytocompatibility against HFF-1 cells (over 80% cell viability). Remarkably, CL-loaded NFs showed desired antibacterial efficacy against S. aureus, E. coli, K. pneumoniae, and P. aeruginosa with 1.0-1.4, 1.3-1.4, 0.8-1.0, and 1.3-1.5 cm inhibition zones, respectively. These outcomes suggested that the fabricated NFs can be useful as wound healing scaffolds.
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Affiliation(s)
- Fahimeh Kazeminava
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Siamak Javanbakht
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Nouri
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khosro Adibkia
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khudaverdi Ganbarov
- Research Laboratory of Microbiology and Virology, Baku State University, Baku, Azerbaijan
| | - Mehdi Yousefi
- Stem Cells Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Majid Ahmadi
- Stem Cells Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pourya Gholizadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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9
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Chen N, Li G, Si Y, Zhang W, Ye Y, Wang Y, Wang K, Zong M, Fan L. Evaluation of LAMP assay using phenotypic tests and PCR for detection of blaKPC gene among clinical samples. J Clin Lab Anal 2022; 36:e24310. [PMID: 35218668 PMCID: PMC8993653 DOI: 10.1002/jcla.24310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/13/2022] [Accepted: 02/15/2022] [Indexed: 11/23/2022] Open
Abstract
Background Carbapenem‐resistant Enterobacteriaceae (CRE) infection constitutes a public health threat, which blaKPC was the major carbapenemases concerned in China. Timely and efficient diagnosis is of paramount importance for controlling the spread of drug‐resistant bacteria. Here, we develop an approach based on loop‐mediated isothermal amplification (LAMP) for rapid confirmation of blaKPC within 60 min from samples collected. Methods We designed primers specific to detect blaKPC and evaluated it for its sensitivity and specificity of detection using real‐time monitoring. Five hundred forty‐six clinical specimens were analyzed by the LAMP assay and compared with the phenotypic tests and PCR. The samples with inconsistent results were further verified by Sanger sequencing. Results The LAMP assay displayed a detection limit of 1 × 102 CFU/ml, which was 10‐fold more sensitive than the PCR. No cross‐reactivity was observed for strains that produced other types of β‐lactamase. Furthermore, we demonstrated concordant results (Kappa > 0.75) between the genotypic method and phenotypic tests for the 546 clinical samples. The data presented in this study suggested that the genotypic method is a reliable assay for identifying blaKPC‐induced CRE in China. The results of the Sanger sequencing indicate that the developed method not only has high accuracy but also meets the need for rapid diagnosis, while the PCR method is prone to false negatives. Conclusions We successfully constructed a LAMP technique that can be used for auxiliary diagnosis of CRE, which is faster, cheaper, and more accurate than the PCR. It may therefore be routinely applied for detection of blaKPC producers in routine clinical laboratories.
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Affiliation(s)
- Nianzhen Chen
- Department of Clinical Laboratory, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Gen Li
- Department of Clinical Laboratory, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yuying Si
- Department of Clinical Laboratory, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Wenyan Zhang
- Department of Clinical Laboratory, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yangqin Ye
- Department of Clinical Laboratory, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yuchao Wang
- Department of Clinical Laboratory, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Keli Wang
- Department of Clinical Laboratory, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Ming Zong
- Department of Clinical Laboratory, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Lieying Fan
- Department of Clinical Laboratory, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
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10
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Hu L, Liu R, Ma Z, Yu T, Li Z, Zou Y, Yuan C, Chen F, Xie H. Specific detection of IMP-1 β-lactamase activity using a trans cephalosporin-based fluorogenic probe. Chem Commun (Camb) 2021; 57:13586-13589. [PMID: 34847209 DOI: 10.1039/d1cc05955f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A fluorogenic probe for the specific detection of IMP-1 β-lactamase activity has been developed. This imaging reagent features a unique trans-acetylamino cephalosporin as an enzymatic recognition moiety, exhibiting excellent selectivity to IMP-1 β-lactamase over other β-lactamases, including serine- and metallo-β-lactamases. The selective activation of the probe by IMP-1 β-lactamase leads to over 30-fold enhancement in the fluorescence intensity, which allows enzyme activity to be reported with high sensitivity.
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Affiliation(s)
- Liqiang Hu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
| | - Runqiu Liu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
| | - Zheng Ma
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
| | - Tao Yu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
| | - Ziyao Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
| | - Yingqiu Zou
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
| | - Chang Yuan
- Shanghai Soong Ching Ling School, Shanghai 201703, China
| | - Fangfang Chen
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
| | - Hexin Xie
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
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11
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Ozma MA, Khodadadi E, Rezaee MA, Asgharzadeh M, Aghazadeh M, Zeinalzadeh E, Ganbarov K, Kafil H. Bacterial proteomics and its application for pathogenesis studies. Curr Pharm Biotechnol 2021; 23:1245-1256. [PMID: 34503411 DOI: 10.2174/1389201022666210908153234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 06/12/2021] [Accepted: 06/13/2021] [Indexed: 01/09/2023]
Abstract
Bacteria build their structures by implementing several macromolecules such as proteins, polysaccharides, phospholipids, and nucleic acids, which leads to preserve their lives and play an essential role in their pathogenesis. There are two genomic and proteomic methods to study various macromolecules of bacteria, which are complementary methods and provide comprehensive information. Proteomic approaches are used to identify proteins and their cell applications. Furthermore, to study bacterial proteins, macromolecules are involved in the bacteria's structures and functions. These protein-based methods provide comprehensive information about the cells, such as the external structures, internal compositions, post-translational modifications, and mechanisms of particular actions such as biofilm formation, antibiotic resistance, and adaptation to the environment, which are helpful in promoting bacterial pathogenesis. These methods use various devices such as MALDI-TOF MS, LC-MS, and two-dimensional electrophoresis, which are valuable tools for studying different structural and functional proteins of the bacteria and their mechanisms of pathogenesis that causes rapid, easy, and accurate diagnosis of the infections.
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Affiliation(s)
- Mahdi Asghari Ozma
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz. Iran
| | - Ehsaneh Khodadadi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz. Iran
| | | | - Mohammad Asgharzadeh
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz. Iran
| | - Mohammad Aghazadeh
- Microbiome and Health Research Center, Tabriz University of Medical Sciences, Tabriz. Iran
| | - Elham Zeinalzadeh
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz. Iran
| | | | - Hossein Kafil
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz 5166614711. Iran
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12
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Zahedi Bialvaei A, Dolatyar Dehkharghani A, Asgari F, Shamloo F, Eslami P, Rahbar M. Modified CIM test as a useful tool to detect carbapenemase activity among extensively drug-resistant Klebsiella pneumoniae, Escherichia coli and Acinetobacter baumannii. ANN MICROBIOL 2021. [DOI: 10.1186/s13213-021-01634-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Purpose
Timely detection of carbapenemases is essential for developing strategies to control the spread of infections by carbapenem-resistant isolates. The purpose of this study was to determine the epidemiology of carbapenemase genes among carbapenem-resistant isolates of Acinetobacter baumannii, Klebsiella pneumoniae, and Escherichia coli. In addition, the efficacy of the modified Hodge test (MHT), Carba NP test, and modified carbapenem inactivation method (mCIM) were compared.
Methods
A total of 122 carbapenem-resistant clinical isolates including 77 K. pneumoniae, 39 A. baumannii, and six E. coli were collected from hospitalized patients. Three phenotypic methods, including the MHT, Carba NP test, and mCIM were used for investigation of carbapenemase production. In addition, polymerase chain reaction (PCR) was performed to detect carbapenemase-encoding genes.
Result
The sensitivity and specificity of the MHT were 75.0% and 100%, respectively. In addition, Carba NP displayed 80.8% sensitivity and 100% specificity, whereas the sensitivity and specificity were 90.4% and 100% for the mCIM test, respectively. Among carbapenem-resistant isolates, 70, 84, and 87 isolates exhibited positive results according to the MHT, Carba NP test, and mCIM, respectively. PCR indicated the presence of one or more carbapenemase genes in 119 of carbapenem-resistant isolates, with blaKPC and blaVIM being the most commonly encountered. Co-production of ‘KPC and OXA-48’, ‘KPC and VIM’, and ‘KPC and IMP’ was detected in three, nine, and seven isolates, respectively.
Conclusion
Our results confirm that the mCIM test is a useful tool for the reliable detection of carbapenemase activity in enterobacterial isolates, especially in clinical microbiological laboratories with limited resources.
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Aghamali M, Gholizadeh P, Moaddab SR, Yousefi M, Asgharzadeh M, Ganbarov K, Kafil HS. Multi-Drug Resistant (MDR) and carbapenemase co-producing Gram-negative bacilli in northwest of Iran. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Tapalski DV, Timoshkova EV, Petrovskaya TA, Osipkina OV, Karpov IA. Microbiological efficiency of the combinations of two carbapenems against antibiotic resistant Klebsiella pneumoniae strains. Klin Lab Diagn 2021; 66:304-309. [PMID: 34047517 DOI: 10.51620/0869-2084-2021-66-5-304-309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Combined antibiotic therapy is widely used for infections caused by carbapenem-resistant K. pneumoniae. The objective of this work was to identify the synergistic activity of combinations of two carbapenems against multidrug- and extensively drug-resistant K. pneumoniae strains producing various types of carbapenemases. For 60 antibiotic-resistant K. pneumoniae strains isolated in 8 cities of Belarus, the minimum inhibitory concentrations (MIC) of colistin and carbapenems were determined by subsequent broth microdilution method, and the genes of carbapenemases and phosphoethanolamine transferases were detected. The checkerboard method was used to determine the sensitivity to the combination of ertapenem and doripenem. High MIC values of carbapenems were revealed for NDM carbapenemase-producing strains (MIC50 of meropenem 64 mg/L, MIC50 of doripenem 64 mg/L). Doripenem was more active; MIC of doripenem ≤ 16 mg/L (low level of resistance) was determined in 28 (46.7%) strains, MIC of meropenem ≤ 16 mg/L - in 8 (13.3% of strains). The effect of potentiating the activity of doripenem with ertapenem at a fixed pharmacokinetic / pharmacodynamic concentration was observed for 20.0% of the strains producing KPC carbapenemase and 29.0% of the strains producing OXA-48 carbapenemase. The potentiating effect was independent of the presence of colistin resistance. Thus, the ability of ertapenem to potentiate the antimicrobial activity of doripenem and meropenem against some of the strains producing serine carbapenemases (KPC and OXA-48) was confirmed. The necessity of routine determination of the true MIC values of carbapenems was shown to optimize their dosage regimens and select the combination antibiotic therapy regimens.
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16
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Abedini E, Khodadadi E, Zeinalzadeh E, Moaddab SR, Asgharzadeh M, Mehramouz B, Dao S, Samadi Kafil H. A Comprehensive Study on the Antimicrobial Properties of Resveratrol as an Alternative Therapy. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2021; 2021:8866311. [PMID: 33815561 PMCID: PMC7987421 DOI: 10.1155/2021/8866311] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 02/16/2021] [Accepted: 03/10/2021] [Indexed: 12/15/2022]
Abstract
Resveratrol is a polyphenolic antioxidant whose possible health benefits include anticarcinogenic, antiaging, and antimicrobial properties that have gained significant attention. The compound is well accepted by individuals and has been commonly used as a nutraceutical in recent decades. Its widespread usage makes it essential to study as a single agent as well as in combination with traditional prescription antibiotics as regards to antimicrobial properties. Resveratrol demonstrates the action of antimicrobials against a remarkable bacterial diversity, viruses, and fungus. This report explains resveratrol as an all-natural antimicrobial representative. It may modify the bacterial virulence qualities resulting in decreased toxic substance production, biofilm inhibition, motility reduction, and quorum sensing disturbance. Moreover, in conjunction with standard antibiotics, resveratrol improves aminoglycoside efficacy versus Staphylococcus aureus, while it antagonizes the deadly function of fluoroquinolones against S. aureus and also Escherichia coli. The present study aimed to thoroughly review and study the antimicrobial potency of resveratrol, expected to help researchers pave the way for solving antimicrobial resistance.
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Affiliation(s)
- Ehsan Abedini
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ehsaneh Khodadadi
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elham Zeinalzadeh
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyyed Reza Moaddab
- Pharmaceutical Nanotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Asgharzadeh
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bahareh Mehramouz
- Connective Tissue Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sounkalo Dao
- Faculté de Médecine, de Pharmacie et d'Odonto-Stomatologie (FMPOS), University of Bamako, Bamako, Mali
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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17
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Gajdács M, Ábrók M, Lázár A, Jánvári L, Tóth Á, Terhes G, Burián K. Detection of VIM, NDM and OXA-48 producing carbapenem resistant Enterobacterales among clinical isolates in Southern Hungary. Acta Microbiol Immunol Hung 2020; 67:209-215. [PMID: 33258795 DOI: 10.1556/030.2020.01181] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 04/04/2020] [Indexed: 02/06/2023]
Abstract
Infections caused by carbapenem-resistant Enterobacterales (CRE) present an important therapeutic problem, as there are limited number of effective therapeutic alternatives available. In this study, phenotypic and genotypic methods were used to characterize carbapenemase-production and other resistance-determinants (AmpC and ESBL-production, efflux pump-overexpression) in 50 isolates (Klebsiella spp. n = 35, Escherichia coli n = 12 and Enterobacter cloacae complex n = 3) collected at the Albert Szent-Györgyi Clinical Center (University of Szeged) between 2014 and 2017. Minimum inhibitory concentrations of meropenem, sulfamethoxazole/trimethoprim, tigecycline, amikacin, moxifloxacin, colistin and fosfomycin were also determined. 24% of isolates were AmpC-producers, while 30% carried blaCTX-M ESBL-genes. Carbapenemase-genes were detected in 18 (36%) of the tested isolates: in 2 isolates blaNDM, in 6 isolates blaOXA-48-like and in 12 isolates, blaVIM was detected by PCR. The species-distribution for isolates positive for carbapenemase-genes was the following: Klebsiella pneumoniae n = 11, Klebsiella oxytoca n = 1, E. coli n = 5, E. cloacae complex n = 1. Efflux pump-overexpression based on the PAβN-screening agar was shown in n = 3 of the tested strains. In nine isolates (18%), carbapenemase and ESBL-genes were detected simultaneously. Highest levels of resistance were noted for fosfomycin (74%) and moxifloxacin (70%), while all isolates were susceptible to colistin. Among applied phenotypic tests in this study the modified carbapenem inactivation method (mCIM) proved to be the most accurate one compared to that of PCR results.
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Affiliation(s)
- Márió Gajdács
- 1Department of Pharmacodynamics and Biopharmacy, Faculty of Pharmacy, University of Szeged, Eötvös utca 6., 6720 Szeged, Hungary
| | - Marianna Ábrók
- 2Institute of Clinical Microbiology, Albert Szent-Györgyi Clinical Center, University of Szeged, Semmelweis utca 6., 6725 Szeged, Hungary
| | - Andrea Lázár
- 2Institute of Clinical Microbiology, Albert Szent-Györgyi Clinical Center, University of Szeged, Semmelweis utca 6., 6725 Szeged, Hungary
| | - Laura Jánvári
- 3Department of Bacteriology, Mycology and Parasitology, National Public Health Centre, Albert Flórián út 2-6., 1097 Budapest, Hungary
| | - Ákos Tóth
- 3Department of Bacteriology, Mycology and Parasitology, National Public Health Centre, Albert Flórián út 2-6., 1097 Budapest, Hungary
| | - Gabriella Terhes
- 3Department of Bacteriology, Mycology and Parasitology, National Public Health Centre, Albert Flórián út 2-6., 1097 Budapest, Hungary
| | - Katalin Burián
- 2Institute of Clinical Microbiology, Albert Szent-Györgyi Clinical Center, University of Szeged, Semmelweis utca 6., 6725 Szeged, Hungary
- 4Department of Medical Microbiology and Immunobiology, Faculty of Medicine, University of Szeged, Dóm tér 10., 6720 Szeged, Hungary
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18
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Tsai YM, Wang S, Chiu HC, Kao CY, Wen LL. Combination of modified carbapenem inactivation method (mCIM) and EDTA-CIM (eCIM) for phenotypic detection of carbapenemase-producing Enterobacteriaceae. BMC Microbiol 2020; 20:315. [PMID: 33069233 PMCID: PMC7568406 DOI: 10.1186/s12866-020-02010-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 10/12/2020] [Indexed: 12/12/2022] Open
Abstract
Background Carbapenemase-resistant Enterobacteriaceae (CRE) cause many serious infections resulting in increasing treatment cost, prolonged hospitalization, and mortality rate. Reduced expression and/or mutations of porins and the presence of carbapenemase promote Enterobacteriaceae survival under carbapenem treatments. Development of accurate methods for the detection of antimicrobial resistance is required not only for therapy but also to monitor the spread of resistant bacteria or resistance genes throughout the hospital and community. In this study, we aimed to evaluate the phenotypic methods, Modified Hodge test (MHT), modified carbapenem inactivation method (mCIM), and EDTA-CIM (eCIM) for the detection of carbapenemase-producing Enterobacteriaceae (CPE). Results The results showed that mCIM had a sensitivity of 100% and a specificity of 100%, whereas the MHT had a sensitivity of 84.8% and a specificity of 97.8% for the 195 CRE isolates tested (105 CPE and 90 non-CPE isolates). The sensitivity of the mCIM/eCIM to detect metallo-carbapenemases in this study was 89.3% and the specificity was 98.7% as compared to the genotypic PCR detection. Conclusions These findings indicate that the mCIM combined with eCIM is useful for detecting and distinguishing different types of carbapenemase in Enterobacteriaceae.
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Affiliation(s)
- Ya-Min Tsai
- Department of Clinical Laboratory, En Chu Kong Hospital, No. 399, Fuxing Rd., Sanxia Dist, New Taipei City, 23702, Taiwan
| | - Shining Wang
- Institute of Microbiology and Immunology, School of Life Science, National Yang-Ming University, No.155, Sec.2, Linong Street, Taipei, 112, Taiwan
| | - Hui-Chuan Chiu
- Department of Clinical Laboratory, En Chu Kong Hospital, No. 399, Fuxing Rd., Sanxia Dist, New Taipei City, 23702, Taiwan
| | - Cheng-Yen Kao
- Institute of Microbiology and Immunology, School of Life Science, National Yang-Ming University, No.155, Sec.2, Linong Street, Taipei, 112, Taiwan.
| | - Li-Li Wen
- Department of Clinical Laboratory, En Chu Kong Hospital, No. 399, Fuxing Rd., Sanxia Dist, New Taipei City, 23702, Taiwan.
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Aruhomukama D. Review of phenotypic assays for detection of extended-spectrum β-lactamases and carbapenemases: a microbiology laboratory bench guide. Afr Health Sci 2020; 20:1090-1108. [PMID: 33402954 PMCID: PMC7751514 DOI: 10.4314/ahs.v20i3.11] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Background Infections caused by gram-negative antibiotic-resistant bacteria continue to increase. Despite recommendations by the Clinical Laboratory Standards Institute (CLSI) and the European Committee on Antimicrobial Susceptibility Testing (EUCAST) with regards to detection of antibiotic degrading enzymes secreted by these bacteria, the true prevalence of extended-spectrum β-lactamase (ESBL) and carbapenemase producers remains a difficult task to resolve. Describing of previously designed phenotypic detection assays for ESBLs and carbapenemases in a single document avails a summary that allows for multiple testing which increases the sensitivity and specificity of detection. Methods and aims This review, therefore, defined and classified ESBLs and carbapenemases, and also briefly described how the several previously designed phenotypic detection assays for the same should be performed. Conclusion Extended-spectrum β-lactamase and carbapenemase detection assays, once performed correctly, can precisely discriminate between bacteria producing these enzymes and those with other mechanisms of resistance to β-lactam antibiotics.
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Affiliation(s)
- Dickson Aruhomukama
- Department of Medical Microbiology, College of Health Sciences, Makerere University, Kampala, Uganda
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20
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Santos AL, dos Santos AP, Ito CRM, de Queiroz PHP, de Almeida JA, de Carvalho Júnior MAB, de Oliveira CZ, Avelino MAG, Wastowski IJ, Gomes GPLA, Souza ACSE, Vasconcelos LSNDOL, Santos MDO, da Silva CA, Carneiro LC. Profile of Enterobacteria Resistant to Beta-Lactams. Antibiotics (Basel) 2020; 9:E410. [PMID: 32679663 PMCID: PMC7400480 DOI: 10.3390/antibiotics9070410] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 12/04/2022] Open
Abstract
A serious emerging problem worldwide is increased antimicrobial resistance. Acquisition of coding genes for evasion methods of antimicrobial drug mechanisms characterizes acquired resistance. This phenomenon has been observed in Enterobacteriaceae family. Treatment for bacterial infections is performed with antibiotics, of which the most used are beta-lactams. The aim of this study was to correlate antimicrobial resistance profiles in Enterobacteriaceae by phenotypic methods and molecular identification of 14 beta-lactamase coding genes. In this study, 70 exclusive isolates from Brazil were used, half of which were collected in veterinary clinics or hospitals Phenotypic methodologies were used and real-time PCR was the molecular methodology used, through the Sybr Green system. Regargding the results found in the tests it was observed that 74.28% were resistant to ampicillin, 62.85% were resistant to amoxicillin associated with clavalunate. The mechanism of resistance that presented the highest expression was ESBL (17.14%). The genes studied that were detected in a greater number of species were blaGIM and blaSIM (66.66% of the samples) and the one that was amplified in a smaller number of samples was blaVIM (16.66%). Therefore, high and worrying levels of antimicrobial resistance have been found in enterobacteria, and a way to minimize the accelerated emergence of their resistance includes developing or improving techniques that generate diagnoses with high efficiency and speed.
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Affiliation(s)
- Andressa Liberal Santos
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, 235 Street, Goiânia 74605-050, Brazil; (A.L.S.); (A.P.d.S.); (C.R.M.I.); (P.H.P.d.Q.); (J.A.d.A.); (M.A.B.d.C.J.); (L.S.N.d.O.L.V.); (C.A.d.S.)
| | - Adailton Pereira dos Santos
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, 235 Street, Goiânia 74605-050, Brazil; (A.L.S.); (A.P.d.S.); (C.R.M.I.); (P.H.P.d.Q.); (J.A.d.A.); (M.A.B.d.C.J.); (L.S.N.d.O.L.V.); (C.A.d.S.)
| | - Célia Regina Malveste Ito
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, 235 Street, Goiânia 74605-050, Brazil; (A.L.S.); (A.P.d.S.); (C.R.M.I.); (P.H.P.d.Q.); (J.A.d.A.); (M.A.B.d.C.J.); (L.S.N.d.O.L.V.); (C.A.d.S.)
| | - Pedro Henrique Pereira de Queiroz
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, 235 Street, Goiânia 74605-050, Brazil; (A.L.S.); (A.P.d.S.); (C.R.M.I.); (P.H.P.d.Q.); (J.A.d.A.); (M.A.B.d.C.J.); (L.S.N.d.O.L.V.); (C.A.d.S.)
| | - Juliana Afonso de Almeida
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, 235 Street, Goiânia 74605-050, Brazil; (A.L.S.); (A.P.d.S.); (C.R.M.I.); (P.H.P.d.Q.); (J.A.d.A.); (M.A.B.d.C.J.); (L.S.N.d.O.L.V.); (C.A.d.S.)
| | - Marcos Antonio Batista de Carvalho Júnior
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, 235 Street, Goiânia 74605-050, Brazil; (A.L.S.); (A.P.d.S.); (C.R.M.I.); (P.H.P.d.Q.); (J.A.d.A.); (M.A.B.d.C.J.); (L.S.N.d.O.L.V.); (C.A.d.S.)
| | | | - Melissa Ameloti G. Avelino
- Medicine College, Federal University of Goiás, 235 Street, Goiânia 74690-900, Brazil; (M.A.G.A.); (M.d.O.S.)
| | | | - Giselle Pinheiro Lima Aires Gomes
- Department of Biology, Federal University of Tocantins, Square 109 North, NS15 Avenue, ALCNO-14-Plano Director North, Palmas 77001-090, Brazil;
| | | | - Lara Stefânia Netto de Oliveira Leão Vasconcelos
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, 235 Street, Goiânia 74605-050, Brazil; (A.L.S.); (A.P.d.S.); (C.R.M.I.); (P.H.P.d.Q.); (J.A.d.A.); (M.A.B.d.C.J.); (L.S.N.d.O.L.V.); (C.A.d.S.)
| | - Mônica de Oliveira Santos
- Medicine College, Federal University of Goiás, 235 Street, Goiânia 74690-900, Brazil; (M.A.G.A.); (M.d.O.S.)
| | - Carla Afonso da Silva
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, 235 Street, Goiânia 74605-050, Brazil; (A.L.S.); (A.P.d.S.); (C.R.M.I.); (P.H.P.d.Q.); (J.A.d.A.); (M.A.B.d.C.J.); (L.S.N.d.O.L.V.); (C.A.d.S.)
| | - Lilian Carla Carneiro
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, 235 Street, Goiânia 74605-050, Brazil; (A.L.S.); (A.P.d.S.); (C.R.M.I.); (P.H.P.d.Q.); (J.A.d.A.); (M.A.B.d.C.J.); (L.S.N.d.O.L.V.); (C.A.d.S.)
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Abdi SN, Ghotaslou R, Ganbarov K, Mobed A, Tanomand A, Yousefi M, Asgharzadeh M, Kafil HS. Acinetobacter baumannii Efflux Pumps and Antibiotic Resistance. Infect Drug Resist 2020; 13:423-434. [PMID: 32104014 PMCID: PMC7024869 DOI: 10.2147/idr.s228089] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/13/2019] [Indexed: 01/03/2023] Open
Abstract
Acinetobacter baumannii is a nosocomial pathogen and gram-negative coccobacillus that is responsible for opportunistic infections, pneumonia, and infections of the urinary tract, bloodstream, skin, and soft tissue. This bacterium poses a major public health problem due to inducing resistance to several drugs, isolates, multidrug treatment, and occasionally pan drugs. Drug resistance is not only a major concern caused by A. baumannii but also is considered as the main challenge in many other pathogens. Several factors such as the efflux pump are associated with antibiotic resistance, biofilm production, and genetic mutations. In this review, A. baumannii is introduced in then some of the practical works conducted on the existing efflux pump are reviewed. The importance of the efflux pump is considered in this paper in relation to the antibiotic resistance and mechanisms developed for the inhibition of these pumps as well.
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Affiliation(s)
- Seyyed Naser Abdi
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Ghotaslou
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khudaverdi Ganbarov
- Department of Microbiology, Baku State University, Baku, Republic of Azerbaijan
| | - Ahmad Mobed
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Asghar Tanomand
- Department of Basic Sciences, Maragheh University of Medical Sciences, Maragheh, Iran
| | - Mehdi Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Asgharzadeh
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Bouslah Z. Carba NP test for the detection of carbapenemase-producing Pseudomonas aeruginosa. Med Mal Infect 2020; 50:466-479. [PMID: 31899068 DOI: 10.1016/j.medmal.2019.12.002] [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: 03/21/2019] [Revised: 06/30/2019] [Accepted: 12/03/2019] [Indexed: 10/25/2022]
Abstract
INTRODUCTION The Carba NP test is a biochemical chromogenic assay developed to detect carbapenemase activity. Variable performance has been reported according to the type of carbapenemase and bacterial species involved. We aimed to describe the benefit of the Carba NP test and its commercial version, the RAPIDEC® CARBA NP, to detect carbapenemase-producing Pseudomonas aeruginosa. METHODS PubMed and ScienceDirect databases were searched. The following data was collected from each included study: research protocol, molecular profile of the tested strains, and sensitivity and specificity of the test used to detect carbapenemase-producing P. aeruginosa. RESULTS Thirty-four studies were included. The most frequently tested strains were metallo-beta-lactamase producers. The pooled sensitivity to detect carbapenemase-producing P. aeruginosa with the original Carba NP test, the Clinical and Laboratory Standards Institute (CLSI) Carba NP test, and the RAPIDEC® CARBA NP was 92%, 95%, and 96%, respectively. The pooled specificity was 99% with the original and the CLSI Carba NP tests, and 92% with the RAPIDEC® CARBA NP. Several studies evaluated modified versions of the Carba NP test to detect carbapenemase-producing P. aeruginosa, with reported sensitivity and specificity exceeding 90% in most cases. CONCLUSION The Carba NP test allows for fast screening and easy handling as well as optimal performance to detect carbapenemase-producing P. aeruginosa. These findings should be confirmed by further studies including a larger cohort of isolates and various types of carbapenemases, mainly non-metallo-beta-lactamases.
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Affiliation(s)
- Z Bouslah
- Faculté de médecine de Tunis, université de Tunis El Manar, 15, rue Djebel Lakhdhar, 1007 La Rabta, Tunis, Tunisie.
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Welker M, van Belkum A. One System for All: Is Mass Spectrometry a Future Alternative for Conventional Antibiotic Susceptibility Testing? Front Microbiol 2019; 10:2711. [PMID: 31849870 PMCID: PMC6901965 DOI: 10.3389/fmicb.2019.02711] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 11/08/2019] [Indexed: 12/20/2022] Open
Abstract
The two main pillars of clinical microbiological diagnostics are the identification of potentially pathogenic microorganisms from patient samples and the testing for antibiotic susceptibility (AST) to allow efficient treatment with active antimicrobial agents. While routine microbial species identification is increasingly performed with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), routine AST still largely relies on conventional and molecular techniques such as broth microdilution or disk and gradient diffusion tests, PCR and automated variants thereof. However, shortly after the introduction of MALDI-TOF MS based routine identification, first attempts to perform AST on the same instruments were reported. Today, a number of different approaches to perform AST with MALDI-TOF MS and other MS techniques have been proposed, some restricted to particular microbial taxa and resistance mechanisms while others being more generic. Further, while some of the methods are in a stage of proof of principles, others are already commercialized. In this review we discuss the different principal approaches of mass spectrometry based AST and evaluate the advantages and disadvantages compared to conventional and molecular techniques. At present, the possibility that MS will soon become a routine tool for AST seems unlikely – still, the same was true for routine microbial identification a mere 15 years ago.
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Affiliation(s)
- Martin Welker
- Microbiology Research Unit, BioMérieux SA, La Balme-les-Grottes, France
| | - Alex van Belkum
- Microbiology Research Unit, BioMérieux SA, La Balme-les-Grottes, France
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24
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Rapid detection of the main carbapenemases in Brazil directly from spiked blood culture using the RESIST-3 O.K.N. immunoassay. Braz J Microbiol 2019; 50:657-662. [DOI: 10.1007/s42770-019-00109-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 06/20/2019] [Indexed: 11/24/2022] Open
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Aghapour Z, Gholizadeh P, Ganbarov K, Bialvaei AZ, Mahmood SS, Tanomand A, Yousefi M, Asgharzadeh M, Yousefi B, Kafil HS. Molecular mechanisms related to colistin resistance in Enterobacteriaceae. Infect Drug Resist 2019; 12:965-975. [PMID: 31190901 PMCID: PMC6519339 DOI: 10.2147/idr.s199844] [Citation(s) in RCA: 188] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 03/04/2019] [Indexed: 12/16/2022] Open
Abstract
Colistin is an effective antibiotic for treatment of most multidrug-resistant Gram-negative bacteria. It is used currently as a last-line drug for infections due to severe Gram-negative bacteria followed by an increase in resistance among Gram-negative bacteria. Colistin resistance is considered a serious problem, due to a lack of alternative antibiotics. Some bacteria, including Pseudomonas aeruginosa, Acinetobacter baumannii, Enterobacteriaceae members, such as Escherichia coli, Salmonella spp., and Klebsiella spp. have an acquired resistance against colistin. However, other bacteria, including Serratia spp., Proteus spp. and Burkholderia spp. are naturally resistant to this antibiotic. In addition, clinicians should be alert to the possibility of colistin resistance among multidrug-resistant bacteria and development through mutation or adaptation mechanisms. Rapidly emerging bacterial resistance has made it harder for us to rely completely on the discovery of new antibiotics; therefore, we need to have logical approaches to use old antibiotics, such as colistin. This review presents current knowledge about the different mechanisms of colistin resistance.
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Affiliation(s)
- Zahra Aghapour
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pourya Gholizadeh
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | | | - Suhad Saad Mahmood
- Department of Biotechnology, College of Science, University of Baghdad, Baghdad, Iraq
| | - Asghar Tanomand
- Department of Microbiology, Maragheh University of Medical Sciences, Maragheh, Iran
| | - Mehdi Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Asgharzadeh
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bahman Yousefi
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Antimicrobial-Resistant Escherichia coli from Environmental Waters in Northern Colorado. JOURNAL OF ENVIRONMENTAL AND PUBLIC HEALTH 2019; 2019:3862949. [PMID: 30906330 PMCID: PMC6397973 DOI: 10.1155/2019/3862949] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 01/13/2019] [Indexed: 12/16/2022]
Abstract
Waterborne Escherichia coli are a major reservoir of antimicrobial resistance (AMR), including but not limited to extended-spectrum beta-lactamase (ESBL) and Klebsiella pneumoniae carbapenemase (KPC) mechanisms. This study quantified and described ESBL- and KPC-producing E. coli in Northern Colorado from sewer water, surface water, and influent and effluent wastewater treatment sources. Total detected bacteria and E. coli abundances, and the percentages that contain ESBL and/or KPC, were compared between water sources. Seventy E. coli isolates from the various waters had drug resistance validated with a panel of 17 antibiotics using a broth microdilution assay. The diverse drug resistance observed across E. coli isolates was further documented by polymerase chain reaction of common ESBL genes and functional relatedness by PhenePlate assay-generated dendrograms (n=70). The total E. coli abundance decreased through the water treatment process as expected, yet the percentages of E. coli harboring ESBL resistance were increased (1.70%) in surface water. Whole-genome sequencing analysis was completed for 185 AMR genes in wastewater E. coli isolates and confirmed the presence of diverse AMR gene classes (e.g., beta-lactams and efflux pumps) in isolate genomes. This study completed surveillance of AMR patterns in E. coli that reside in environmental water systems and suggests a role for integrating both phenotypic and genotypic profiling beyond ESBL and KPC mechanisms. AMR screening via multiple approaches may assist in the prevention of drug-resistant E. coli spread from waters to animals and humans.
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Elbrolosy AM, Labeeb AZ, Hassan DM. New Delhi metallo-β-lactamase-producing Acinetobacter isolates among late-onset VAP patients: multidrug-resistant pathogen and poor outcome. Infect Drug Resist 2019; 12:373-384. [PMID: 30809098 PMCID: PMC6377045 DOI: 10.2147/idr.s186924] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Acinetobacter spp. are increasingly important microbes involved in late-onset ventilator-associated pneumonia (VAP). Purpose The aims of this study were to determine the prevalence of New Delhi metallo-β-lactamase (MβL) (blaNDM-1)-producing Acinetobacter spp. among late-onset VAP patients in different intensive care units (ICUs) of Menoufia and Kasr Al Ainy University Hospitals, to investigate the possible risk factors contributing to the acquisition of blaNDM-1-producing Acinetobacter infection, and to correlate between antimicrobial resistance pattern and therapeutic efficacy as well as clinical outcomes of these patients. Materials and methods Sixty-four Acinetobacter isolates were collected from mechanically ventilated patients with suspected late-onset VAP and subjected to antimicrobial susceptibility testing. The modified Hodge test (MHT) and combined disk tests (CDT) were applied for blaNDM-1 MβL detection. Acinetobacter isolates with phenotypically confirmed MβLs production were subjected to a PCR assay to verify the presence of blaNDM-1 gene. The most obvious risk factors for acquisition of carbapenem resistance in VAP patients and treatment outcomes were also analyzed. Results Out of 64 Acinetobacter isolates, 42 (65.6%) proved to be blaNDM-1 positive. The sensitivity and specificity of MHT were 52.38% and 41.67%, while for CDT they were 92.86% and 83.33%, respectively. Acinetobacter isolates showed high susceptibility to colistin (85.7%). The clinical response was better among VAP patients who received combined carbapenem plus colistin therapy than those who received colistin alone. Relapse of infection was detected in 12.5% (8/64) of VAP cases. The reported mortality reached 46.8% (30/64) of which 27 (64.3%) were infected with blaNDM-1-positive isolates. Prolonged duration of mechanical ventilation, longer hospital and ICU stays, and prior exposure to antibiotic therapy were by far the most important factors predisposing to carbapenem resistance among VAP patients. Conclusion A worldwide spread of Acinetobacter spp. expressing carbapenemases represents a significant threat to the medical community. The current study addressed the high prevalence of blaNDM-1-producing Acinetobacter isolates among late-onset VAP patients.
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Affiliation(s)
- Asmaa M Elbrolosy
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt,
| | - Azza Z Labeeb
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt,
| | - Dina M Hassan
- Department of Clinical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
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NDM Metallo-β-Lactamases and Their Bacterial Producers in Health Care Settings. Clin Microbiol Rev 2019; 32:32/2/e00115-18. [PMID: 30700432 DOI: 10.1128/cmr.00115-18] [Citation(s) in RCA: 377] [Impact Index Per Article: 75.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
New Delhi metallo-β-lactamase (NDM) is a metallo-β-lactamase able to hydrolyze almost all β-lactams. Twenty-four NDM variants have been identified in >60 species of 11 bacterial families, and several variants have enhanced carbapenemase activity. Klebsiella pneumoniae and Escherichia coli are the predominant carriers of bla NDM, with certain sequence types (STs) (for K. pneumoniae, ST11, ST14, ST15, or ST147; for E. coli, ST167, ST410, or ST617) being the most prevalent. NDM-positive strains have been identified worldwide, with the highest prevalence in the Indian subcontinent, the Middle East, and the Balkans. Most bla NDM-carrying plasmids belong to limited replicon types (IncX3, IncFII, or IncC). Commonly used phenotypic tests cannot specifically identify NDM. Lateral flow immunoassays specifically detect NDM, and molecular approaches remain the reference methods for detecting bla NDM Polymyxins combined with other agents remain the mainstream options of antimicrobial treatment. Compounds able to inhibit NDM have been found, but none have been approved for clinical use. Outbreaks caused by NDM-positive strains have been reported worldwide, attributable to sources such as contaminated devices. Evidence-based guidelines on prevention and control of carbapenem-resistant Gram-negative bacteria are available, although none are specific for NDM-positive strains. NDM will remain a severe challenge in health care settings, and more studies on appropriate countermeasures are required.
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29
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Al-Zahrani IA. Routine detection of carbapenem-resistant gram-negative bacilli in clinical laboratories. A review of current challenge. Saudi Med J 2018; 39:861-872. [PMID: 30251728 PMCID: PMC6201013 DOI: 10.15537/smj.2018.9.22840] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The detection of carbapenem-resistant organisms (CROs) represents a substantial challenge for many clinical laboratories. In this review, several phenotypic and non-phenotypic methods for detecting CROs are discussed. However, no consensus has yet been reached with regards to the single most optimal method. Due to differences in carbapenem-resistant activity between carbapenemases, the simultaneous use of 2 or more phenotypic detection methods can improve the detection of CROs compared with a single technique. Molecular methods are currently favored because the majority can be performed rapidly with a high level of accuracy. Whole-genome sequencing (WGS) yields unambiguous data pertaining to complete analysis of the entire genome and may ultimately become a highly powerful tool in routine clinical settings. However, WGS is still relatively expensive and requires an automated data interpretation system. The routine implementation of this technique in clinical laboratories may not occur for several years, particularly in developing countries.
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Affiliation(s)
- Ibrahim A Al-Zahrani
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. E-mail.
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Kharrat M, Chebbi Y, Ben Tanfous F, Lakhal A, Ladeb S, Othmen TB, Achour W. Extended spectrum beta-lactamase-producing Enterobacteriaceae infections in hematopoietic stem cell transplant recipients: Epidemiology and molecular characterization. Int J Antimicrob Agents 2018; 52:886-892. [DOI: 10.1016/j.ijantimicag.2018.05.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/20/2018] [Accepted: 05/08/2018] [Indexed: 02/02/2023]
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Cordovana M, Kostrzewa M, Glandorf J, Bienia M, Ambretti S, Pranada AB. A Full MALDI-Based Approach to Detect Plasmid-Encoded KPC-Producing Klebsiella pneumoniae. Front Microbiol 2018; 9:2854. [PMID: 30542332 PMCID: PMC6277887 DOI: 10.3389/fmicb.2018.02854] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 11/06/2018] [Indexed: 12/29/2022] Open
Abstract
KPC-producing Klebsiella pneumoniae represents a severe public health concern worldwide. The rapid detection of these isolates is of fundamental importance for the adoption of proper antibiotic treatment and infection control measures, and new applications of MALDI-TOF MS technology fit this purpose. In this study, we present a full MALDI-based approach to detect plasmid-encoded KPC-producing strains, accomplished by the automated detection of a KPC-specific peak (at 11,109 m/z) by a specific algorithm integrated into the MALDI Biotyper system (Bruker Daltonik), and the confirmation of carbapenemase activity by STAR-Carba imipenem hydrolysis assay. A total of 6209 K. pneumoniae isolates from Italy and Germany were investigated for the presence of the KPC-related peak, and a subset of them (n = 243) underwent confirmation of carbapenemase activity by STAR-Carba assay. The novel approach was further applied directly to positive blood culture bottles (n = 204), using the bacterial pellet obtained with Sepsityper kit (Bruker Daltonik). The novel approach enabled a reliable and very fast detection of KPC-producing K. pneumoniae strains, from colonies as well as directly from positive blood cultures. The automated peak detection enabled the instant detection of KPC-producing K. pneumoniae during the routine identification process, with excellent specificity (100%) and a good sensitivity (85.1%). The sensitivity is likely mainly related to the prevalence of the specific plasmid harboring clones among all the KPC-producing circulating strains. STAR-Carba carbapenemase confirmation showed 100% sensitivity and specificity, both from colonies and from positive blood cultures.
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Affiliation(s)
- Miriam Cordovana
- Laboratory of Bacteriology, Operative Unit of Microbiology, University Hospital of Bologna Policlinico Sant'Orsola-Malpighi, Bologna, Italy
| | | | | | - Michael Bienia
- Department of Medical Microbiology, MVZ Dr. Eberhard & Partner Dortmund, Dortmund, Germany
| | - Simone Ambretti
- Laboratory of Bacteriology, Operative Unit of Microbiology, University Hospital of Bologna Policlinico Sant'Orsola-Malpighi, Bologna, Italy
| | - Arthur B Pranada
- Department of Medical Microbiology, MVZ Dr. Eberhard & Partner Dortmund, Dortmund, Germany
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Moghadampour M, Rezaei A, Faghri J. The emergence of bla OXA-48 and bla NDM among ESBL-producing Klebsiella pneumoniae in clinical isolates of a tertiary hospital in Iran. Acta Microbiol Immunol Hung 2018; 65:335-344. [PMID: 30024268 DOI: 10.1556/030.65.2018.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The aim of this study was to investigate the prevalence of carbapenem-resistant Klebsiella pneumoniae (CRKP) and the most common types of carbapenemases, metallo-beta-lactamases (MBLs), and extended-spectrum beta-lactamases (ESBLs) among CRKP isolates in a tertiary hospital in Isfahan, Iran. Eighty non-repetitive clinical isolates of K. pneumoniae were obtained from different clinical specimens. Antibiotic resistance pattern of isolates was determined by disk diffusion method and production of carbapenemases and MBLs was confirmed using modified Hodge test and E-test, respectively. Molecular detection of the antibiotic resistance genes was performed using PCR. Fifty-one (63.8%) isolates have decreased susceptibility to carbapenems, of which 46 (90.2%) isolates were as carbapenemase producer and four (7.8%) isolates were positive for MBLs, phenotypically. The results of PCR showed that the prevalence of blaOXA-48, blaNDM, blaSHV, blaCTX-M, and blaTEM genes among CRKP isolates were 90.2%, 15.7%, 98%, 96.1%, and 90.2%, respectively. No isolates carrying the blaKPC, blaGES, blaIMI, blaVIM, and blaIMP genes were detected. This study showed that the production of OXA-48 is one of the main mechanisms of resistance to carbapenems in CRKP isolates in Isfahan. In addition, the dissemination of NDM-producing CRKP isolates is a potential risk for the health care system of this area in the near future.
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Affiliation(s)
- Mehdi Moghadampour
- 1 Department of Microbiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Aliakbar Rezaei
- 1 Department of Microbiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jamshid Faghri
- 1 Department of Microbiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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Performance of "RESIST-3 O.K.N. K-SeT" immunochromatographic assay for the detection of OXA-48 like, KPC, and NDM carbapenemases in Klebsiella pneumoniae in Turkey. Braz J Microbiol 2018; 49:885-890. [PMID: 29548716 PMCID: PMC6175700 DOI: 10.1016/j.bjm.2018.02.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 09/21/2017] [Accepted: 02/05/2018] [Indexed: 01/01/2023] Open
Abstract
In this study, the performance of the “RESIST-3 O.K.N. K-SeT” (Coris BioConcept, Gembloux, Belgium) immunochromatographic assay was evaluated in 132 Klebsiella pneumoniae comprising 102 carbapenem resistant and 30 carbapenem susceptible isolates. Genotypically known isolates of Gram negative bacteria (n = 22) including various species were also tested by the assay as controls. The isolates tested by the immunochromatographic assay and also were run PCR for blaKPC, blaIMP, blaVIM, blaNDM, and blaOXA-48. The rates of blaNDM, blaOXA-48, and blaKPC in carbapenem resistant isolates were found at 52.9%, 39.2%, and 2.0%, respectively. Both blaNDM and blaOXA-48 were found in six (5.9%) isolates. The results of the assay showed 100% concordance with those obtained by PCR in 132 K. pneumoniae. The agreement between the two methods was found to be identical at the isolate level. The assay also correctly detected all genotypically known isolates of Escherichia coli, Serratia marcescens, Citrobacter freundii, Enterobacter cloacae, K. pneumoniae carrying blaKPC, blaNDM, and/or blaOXA-48. On the other hand, the assay did not exhibit any cross-reaction in control isolates harboring blaIMP and blaVIM. We conclude that the RESIST-3 O.K.N. K-SeT is a reliable, rapid, and user friendly test and we recommend it for routine diagnostic laboratories.
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Mobaraki S, Aghazadeh M, Soroush Barhaghi MH, Yousef Memar M, Goli HR, Gholizadeh P, Samadi Kafil H. Prevalence of integrons 1, 2, 3 associated with antibiotic resistance in Pseudomonas aeruginosa isolates from Northwest of Iran. Biomedicine (Taipei) 2018; 8:2. [PMID: 29480797 PMCID: PMC5825915 DOI: 10.1051/bmdcn/2018080102] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 12/12/2017] [Indexed: 11/18/2022] Open
Abstract
Background: The presence of Class 1, 2 and 3 integrons in clinical isolates of Pseudomonas aeruginosa with multi-drug resistance phenotype has rendered the organism as a new concern. Objective: This study aimed to investigate the prevalence of Class 1, 2 and 3 integrons in multi-drug resistant clinical isolates of Pseudomonas aeruginosa collected from hospitals in the city of Tabriz Materials and Methods: A total of 200 P. aeruginosa non-duplicated clinical isolates were collected from inpatients and outpatients in different wards of hospitals from May to November 2016. The bacteria were identified by conventional microbiological methods. Antibiotic susceptibility test was performed by disk diffusion method and the presence of integrons was analyzed by polymerase chain reaction (PCR). Results: Colistin was the most effective antibiotic, while 98% of the isolates were resistant to cefotaxime. Fifty-three percent of the isolates were recorded as multi-drug resistant (MDR) phenotype; however, 27.5% of the isolates were resistant to more than 8 antibiotics. In this study, 55 (27.5%), 51 (25.5%), and 30 (15%) clinical isolates of P. aeruginosa were positive for Class 1, 2 and 3 integrons, respectively. aac(6)II in Class I integrons and dfrA1 in ClassII and aacA7 in Class II integrons were the most prevalent genes. Resistance to aminoglycosides were the most common genes harbored by integrons. Conclusion: The results of this study showed that the prevalence of Class 1, 2 and 3 in integron genes in most P. aeruginosa strains islated from different parts and equipment used in the hospital. The role of these transferable genetic agents has been proven in the creation of resistance. Therefore, it is essential to use management practices to optimize the use of antibiotics, preferably based on the results of antibiogram and trace coding genes for antibiotic resistance.
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Affiliation(s)
- Shahram Mobaraki
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran - Iranian Center of Excellence in Health Management, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Aghazadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Mohammad Yousef Memar
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Hamid Reza Goli
- Department of Medical Microbiology and Virology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, I.R. Iran
| | - Pourya Gholizadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, I.R. Iran - Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran - Iranian Center of Excellence in Health Management, Tabriz University of Medical Sciences, Tabriz, Iran
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Bardet L, Le Page S, Leangapichart T, Rolain JM. LBJMR medium: a new polyvalent culture medium for isolating and selecting vancomycin and colistin-resistant bacteria. BMC Microbiol 2017; 17:220. [PMID: 29169321 PMCID: PMC5701432 DOI: 10.1186/s12866-017-1128-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 11/15/2017] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Multi-drug resistant bacteria are a phenomenon which is on the increase around the world, particularly with the emergence of colistin-resistant Enterobacteriaceae and vancomycin-resistant enterococci strains. The recent discovery of a plasmid-mediated colistin resistance with the description of the transferable mcr-1 gene raised concerns about the need for an efficient detection method for these pathogens, to isolate infected patients as early as possible. The LBJMR medium was developed to screen for all polymyxin-resistant Gram-negative bacteria, including mcr-1 positive isolates, and vancomycin-resistant Gram-positive bacteria. RESULTS The LBJMR medium was developed by adding colistin sulfate salt at a low concentration (4 μg/mL) and vancomycin (50 μg/mL), with glucose (7.5 g/L) as a fermentative substrate, to a Purple Agar Base (31 g/L). A total of 143 bacterial strains were used to evaluate this universal culture medium, and the sensitivity and specificity of detection were 100% for the growth of resistant strains. 68 stool samples were cultured on LBJMR, and both colistin-resistant Gram-negative and vancomycin-resistant Gram-positive strains were specifically detected. CONCLUSIONS The LBJMR medium is a multipurpose selective medium which makes it possible to identify bacteria of interest from clinical samples and to isolate contaminated patients in hospital settings. This is a simple medium that could be easily used for screening in clinical microbiology laboratories.
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Affiliation(s)
- Lucie Bardet
- URMITE, Aix Marseille Université UM63, CNRS 7278, IRD 198, INSERM 1095 IHU - Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13385 Marseille Cedex 05, France
| | - Stéphanie Le Page
- URMITE, Aix Marseille Université UM63, CNRS 7278, IRD 198, INSERM 1095 IHU - Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13385 Marseille Cedex 05, France
| | - Thongpan Leangapichart
- URMITE, Aix Marseille Université UM63, CNRS 7278, IRD 198, INSERM 1095 IHU - Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13385 Marseille Cedex 05, France
| | - Jean-Marc Rolain
- URMITE, Aix Marseille Université UM63, CNRS 7278, IRD 198, INSERM 1095 IHU - Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13385 Marseille Cedex 05, France
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Current opinions in the infection control of carbapenem-resistant Enterobacteriaceae species and Pseudomonas aeruginosa. ACTA ACUST UNITED AC 2017. [DOI: 10.1097/mrm.0000000000000107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bialvaei AZ, Pourlak T, Aghamali M, Asgharzadeh M, Gholizadeh P, Kafil HS. The Prevalence of CTX-M-15 Extended-spectrum β-Lactamases Among Salmonella spp. and Shigella spp. Isolated from three Iranian Hospitals. Eur J Microbiol Immunol (Bp) 2017; 7:133-137. [PMID: 28690880 PMCID: PMC5495085 DOI: 10.1556/1886.2017.00004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 03/16/2017] [Indexed: 12/25/2022] Open
Abstract
Bacterial antimicrobial resistance mediated by the production of extended-spectrum β-lactamases (ESBLs) is considered a major threat for treatment of Salmonella and Shigella infections. This study aimed to investigate antibiotic resistance patterns of Salmonella and Shigella spp. and presence of CTX-M from three teaching hospitals in Iran. In the present study, 58 clinical Shigella and 91 Salmonella isolates were recovered between 2009 and 2013 from 3 teaching hospitals in Iran. After culture and antimicrobial susceptibility testing, ESBL-positive isolates were subjected to further investigations. These included polymerase chain reaction (PCR) amplification and DNA sequencing of blaCTX-M-15 encoding plasmid. In both genera, high sensitivity to gentamicin and amikacin, but high resistance to ampicillin, tetracycline, and trimethoprim-sulfamethoxazole, was found. Molecular investigation showed that 31.8% isolates of Salmonella spp. and 34.48% isolates of Shigella spp. were CTX-M positive and all of them were also positive for ISEcpI. Protein translation, comparing with reference sequences, showed that all CTX-M isolates belong to CTX-M-15. The present study suggests that the resistance of ESBLs-producing Salmonella and Shigella spp. in Iran hospitals is very serious. Therefore, strategies to minimize the spread of ESBL-producing isolates should be implemented.
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Affiliation(s)
- Abed Zahedi Bialvaei
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Tala Pourlak
- Connective Tissue Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mina Aghamali
- Infectious and Tropical Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Asgharzadeh
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pourya Gholizadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Faculty of Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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Akhi MT, Khalili Y, Ghotaslou R, Kafil HS, Yousefi S, Nagili B, Goli HR. Carbapenem inactivation: a very affordable and highly specific method for phenotypic detection of carbapenemase-producing Pseudomonas aeruginosa isolates compared with other methods. J Chemother 2016; 29:144-149. [PMID: 27443547 DOI: 10.1080/1120009x.2016.1199506] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This investigation was undertaken to compare phenotypic and molecular methods for detection of carbapenemase-producing Pseudomonas aeruginosa. A total of 245 non-duplicated isolates of P. aeruginosa were collected from hospitalized patients. Disc diffusion method was used to identify carbapenem-resistant bacteria. Three phenotypic methods, including Modified Hodge Test (MHT), Modified Carba NP (MCNP) test and Carbapenem Inactivation Method (CIM) were used for investigation of carbapenemase production. In addition, polymerase chain reaction (PCR) was used to detect carbapenemase encoding genes. Of 245 P. aeruginosa isolates investigated, 121 isolates were carbapenem-resistant. Among carbapenem-resistant isolates, 40, 39 and 35 isolates exhibited positive results using MHT, MCNP test and CIM, respectively. PCR indicated the presence of carbapenemase genes in 35 of carbapenem-resistant isolates. MHT showed low sensitivity and specificity for carbapenemase detection among P. aeruginosa isolates in comparison to PCR. CIM was most affordable and highly specific than MCNP test compared with the molecular method.
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Affiliation(s)
- Mohammad Taghi Akhi
- a Immunology Research Center, Tabriz University of Medical Sciences , Tabriz , Iran.,b Faculty of Medicine, Department of Microbiology , Tabriz University of Medical Sciences , Tabriz , Iran
| | - Younes Khalili
- a Immunology Research Center, Tabriz University of Medical Sciences , Tabriz , Iran.,b Faculty of Medicine, Department of Microbiology , Tabriz University of Medical Sciences , Tabriz , Iran.,e Social Security Organization, Emam Reza Hospital , Urmia , Iran
| | - Reza Ghotaslou
- b Faculty of Medicine, Department of Microbiology , Tabriz University of Medical Sciences , Tabriz , Iran
| | - Hossein Samadi Kafil
- b Faculty of Medicine, Department of Microbiology , Tabriz University of Medical Sciences , Tabriz , Iran
| | - Saber Yousefi
- c Faulty of Medicine, Department of Microbiology and Virology , Urmia University of Medical Sciences , Urmia , Iran
| | - Behroz Nagili
- d Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Hamid Reza Goli
- b Faculty of Medicine, Department of Microbiology , Tabriz University of Medical Sciences , Tabriz , Iran
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Leylabadlo HE, Kafil HS, Yousefi M, Aghazadeh M, Asgharzadeh M. Persistent infection with metallo-beta-lactamase and extended spectrum β-lactamase producer Morganella morganii in a patient with urinary tract infection after kidney transplantation. J Nat Sci Biol Med 2016; 7:179-81. [PMID: 27433071 PMCID: PMC4934110 DOI: 10.4103/0976-9668.184707] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Organ transplant recipients under immunosuppressive therapy have a highly increased risk of acquiring unusual opportunistic infections. Diagnosis of the etiology of infection may be difficult in clinical manifestations, which need further histological and biological investigations. Here in we report, for the 1st time in the Iran, a Morganella morganii isolate harboring blaVIM, blaCTX-M, and blaSHV genes after kidney transplantation with persistent urinary infections.
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Affiliation(s)
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Faculty of Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Yousefi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Aghazadeh
- Infectious Disease and Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Asgharzadeh
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Bialvaei AZ, Kafil HS, Asgharzadeh M, Aghazadeh M, Yousefi M. CTX-M extended-spectrum β-lactamase-producing Klebsiella spp, Salmonella spp, Shigella spp and Escherichia coli isolates in Iranian hospitals. Braz J Microbiol 2016; 47:706-11. [PMID: 27268117 PMCID: PMC4927670 DOI: 10.1016/j.bjm.2016.04.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 11/24/2015] [Indexed: 11/23/2022] Open
Abstract
This study was conducted in Iran in order to assess the distribution of CTX-M type ESBLs producing Enterobacteriaceae. From January 2012 to December 2013, totally 198 E. coli, 139 Klebsiella spp, 54 Salmonella spp and 52 Shigella spp from seven hospitals of six provinces in Iran were screened for resistance to extended-spectrum cephalosporins. After identification and susceptibility testing, isolates presenting multiple-drug resistance (MDR) were evaluated for ESBL production by the disk combination method and by Etest using (cefotaxime and cefotaxime plus clavulanic acid). All isolates were also screened for blaCTX-M using conventional PCR. A total of 42.92%, 33.81%, 14.81% and 7.69% of the E. coli, Klebsiella spp, Salmonella spp and Shigella spp isolates were MDR, respectively. The presence of CTX-M enzyme among ESBL-producing isolates was 85.18%, 77.7%, 50%, and 66.7%, in E. coli, Klebsiella spp, Salmonella spp and Shigella spp respectively. The overall presence of CTX-M genes in Enterobacteriaceae was 15.4% and among the resistant isolates was 47.6%. This study indicated that resistance to β-lactams mediated by CTX-M enzymes in Iran had similar pattern as in other parts of the world. In order to control the spread of resistance, comprehensive studies and programs are needed.
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Affiliation(s)
- Abed Zahedi Bialvaei
- Infectious Disease and Tropical Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mohammad Asgharzadeh
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Aghazadeh
- Infectious Disease and Tropical Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Yousefi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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