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Javid A, Ahmed M. A computational odyssey: uncovering classical β-lactamase inhibitors in dry fruits. J Biomol Struct Dyn 2024; 42:4578-4604. [PMID: 37288775 DOI: 10.1080/07391102.2023.2220817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 05/29/2023] [Indexed: 06/09/2023]
Abstract
In the antibacterial arsenal, β-lactams have held a prominent position, but increasing resistance due to unauthorized use and genetic factors requires new strategies. Combining β-lactamase inhibitors with broad-spectrum β-lactams proves effective in combating this resistance. ESBL producers demand new inhibitors, leading to the exploration of plant-derived secondary metabolites for potent β-lactam antibiotics or alternative inhibitors. Using virtual screening, molecular docking, ADMET analysis, and molecular dynamic simulation, this study actively analyzed the inhibitory activity of figs, cashews, walnuts, and peanuts against SHV-1, NDM-1, KPC-2, and OXA-48 β-lactamases. Using AutoDock Vina, the docking affinities of various compounds for target enzymes were initially screened, revealing 12 bioactive compounds with higher affinities for the target enzymes compared to Avibactam and Tazobactam. Top-scoring metabolites, including Oleanolic acid, Protocatechuic acid, and Tannin, were subjected to MD simulation studies to further analyze the stability of the docked complexes using WebGro. The simulation coordinates, in terms of RMSD, RMSF, SASA, Rg, and hydrogen bonds formed, showed that these phytocompounds are stable enough to retain in the active sites at various orientations. The PCA and FEL analysis also showed the stability of the dynamic motion of Cα residues of phytochemical-bound enzymes. The pharmacokinetic analysis of the top phytochemicals was performed to analyze their bioavailability and toxicity. This study provides new insights into the therapeutic potential of phytochemicals of selected dry fruits and contributes to future experimental studies to identify βL inhibitors from plants.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Amina Javid
- Institute of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
| | - Mehboob Ahmed
- Institute of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
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Almasian Tehrani N, Azimi L, Armin S, Soleimani N, Fallah F, Karimi A, Shamsian BS, Nazari S, Alebouyeh M. Endogenous Bacteremia Caused by Intestinal Colonization of Carbapenem-Resistant Enterobacteriaceae (CR E) in Immunocompromised Children. Trop Med Infect Dis 2023; 8:402. [PMID: 37624340 PMCID: PMC10458169 DOI: 10.3390/tropicalmed8080402] [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: 06/19/2023] [Revised: 07/24/2023] [Accepted: 08/04/2023] [Indexed: 08/26/2023] Open
Abstract
OBJECTIVE Carbapenem-resistant Enterobacteriaceae (CRE) infection is life-threatening, especially for immunocompromised children. The source tracking of CRE could prevent bacteremia during hospitalization. In this study, the intestinal colonization of CRE and their translocation to blood were investigated. METHODS Stool samples from immunocompromised pediatric patients were collected after admission, and secondary stool and blood samples were collected in case of fever. After CRE phonotypic detection, the OXA-48, NDM-1, VIM, IMP, and KPC genes were detected by PCR. Enterobacterial Repetitive Intergenic Consensus Polymerase Chain Reaction (ERIC-PCR) was used to determine the phylogenic relatedness of the blood and fecal isolates. RESULTS Bacteremia was recorded in 71.4% of the patients. Enterobacteriaceae spp. were recorded in 100% of the stool samples and 31% of the blood samples. The correlation between the length of stay (LOS), days of fever, chemotherapy regimens, and death rate was significant (p-value ≤ 0.05). OXA-48 was present in all CRE isolates in both the primary and the secondary stool samples and the blood samples. According to the phylogenetic data, 58.33% of the patients with bacteremia had identical blood and stool isolates. The death rate was 24.4% in children with CRE bacteremia. CONCLUSIONS The primary intestinal colonization with CRE in immunocompromised pediatrics and their translocation to blood was established in this study. The implementation of infection control programs and the application of infection prevention strategies for immunocompromised children is necessary.
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Affiliation(s)
- Nasim Almasian Tehrani
- Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
- Department of Microbiology and Microbial Biotechnology, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Leila Azimi
- Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Shahnaz Armin
- Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Neda Soleimani
- Department of Microbiology and Microbial Biotechnology, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Fatemeh Fallah
- Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Abdollah Karimi
- Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Bibi Shahin Shamsian
- Pediatric Congenital Hematologic Disorders Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Shiva Nazari
- Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
| | - Masoud Alebouyeh
- Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran 1546815514, Iran
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Khalid S, Migliaccio A, Zarrilli R, Khan AU. Efficacy of Novel Combinations of Antibiotics against Multidrug-Resistant-New Delhi Metallo-Beta-Lactamase-Producing Strains of Enterobacterales. Antibiotics (Basel) 2023; 12:1134. [PMID: 37508229 PMCID: PMC10376285 DOI: 10.3390/antibiotics12071134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
The emergence of multidrug-resistance (MDR)-New Delhi metallo-beta-lactamase (NDM)-producing microorganisms-has become a serious concern for treating such infections. Therefore, we investigated the effective antimicrobial combinations against multidrug-resistant New Delhi metallo-beta-lactamase-producing strains of Enterobacterales. The tests were carried out using the 2D(two-dimensional) checkerboard method. Of 7 antimicrobials, i.e., doripenem (DRP), streptomycin (STR), cefoxitin (FOX), imipenem (IPM), cefotaxime (CTX), meropenem (MER), and gentamicin (GEN), 19 different combinations were used, and out of them, three combinations showed synergistic effects against 31 highly drug-resistant strains carrying blaNDM and other associated resistance markers. Changes in the minimum inhibitory concentration (MIC) values were interpreted using the test fractional inhibitory concentration index (FIC Index). The FIC Index values of these combinations were found in the range of 0.1562 to 0.5, which shows synergy, whereas no synergism was observed in the remaining antimicrobial combinations. We conclude that these antibiotic combinations can be analyzed in in vivo and pharmacological studies to establish an effective therapeutic approach.
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Affiliation(s)
- Shamsi Khalid
- Medical Microbiology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202001, India
| | - Antonella Migliaccio
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy
| | - Raffaele Zarrilli
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy
| | - Asad U Khan
- Medical Microbiology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202001, India
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Elshafiee EA, Khalefa HS, Al-Atfeehy NM, Amer F, Hamza DA, Ahmed ZS. Biofilms and efflux pump regulatory gene (mexR) in multidrug-resistant Pseudomonas aeruginosa isolated from migratory birds in Egypt. Vet World 2022; 15:2425-2431. [DOI: 10.14202/vetworld.2022.2425-2431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: Multidrug-resistant (MDR) Pseudomonas aeruginosa is a global threat to public health. This study aimed to determine biofilms and efflux pump regulatory gene (mexR) in MDR P. aeruginosa isolates.
Materials and Methods: A total of 42 fecal samples of aquatic migratory birds collected during hunting season in Egypt were evaluated for the detection of P. aeruginosa according to standard culture-based methods. The antibiotic susceptibility of P. aeruginosa strains was evaluated using disk diffusion methods. The biofilm formation ability of the isolates was phenotypically determined using a colorimetric microtitration plate assay. Polymerase chain reaction amplification was performed to detect biofilm genes (PelA and PslA) and mexR.
Results: In total, 19 isolates (45.2%) were recovered from the 42 fecal samples of migratory birds. All isolates were identified as MDR P. aeruginosa, and 78.9% of the strains produced biofilms at different degrees. Molecular detection of biofilm extracellular polymeric substances revealed that PelA was the most predominant gene in the biofilm-producing isolates, followed by PslA. mexR was detected in 63.2% of MDR P. aeruginosa isolates, and its prevalence was higher in non–biofilm-producing strains (75%) than in biofilm-producing strains (60%).
Conclusion: Antibiotic resistance in P. aeruginosa isolates recovered from migratory birds through various mechanisms is a major public and animal health problem. It is important to consider the significance of migratory birds in disease transmission.
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Affiliation(s)
- Esraa A. Elshafiee
- Department of Zoonoses, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt
| | - Hanan S. Khalefa
- Department of Veterinary Hygiene and Management, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt
| | - Nayera M. Al-Atfeehy
- Biotechnology Unit, Reference Laboratory for Veterinary Quality Control on Poultry Production (RLQP), Animal Health Research Institute (AHRI), Agriculture Research Center (ARC), Nadi El-Seid St., P.O. Box 246, Dokki, Giza, 12618, Egypt
| | - Fatma Amer
- Biotechnology Unit, Animal Health Research Institute, Animal Research Center, Nadi El-Seid St., P.O. Box 246, Dokki, Giza, 12618, Egypt
| | - Dalia A. Hamza
- Department of Zoonoses, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt
| | - Zeinab S. Ahmed
- Department of Zoonoses, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt
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Ramazani R, Izadi Amoli R, Taghizadeh Armaki M, Pournajaf A, Kaboosi H. A molecular New Update on the Biofilm Production and Carbapenem Resistance Mechanisms in Clinical Pseudomonas aeruginosa Isolates. IRANIAN JOURNAL OF MEDICAL MICROBIOLOGY 2022. [DOI: 10.30699/ijmm.16.6.557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cherak Z, Loucif L, Bendjama E, Moussi A, Benbouza A, Grainat N, Rolain JM. Dissemination of Carbapenemases and MCR-1 Producing Gram-Negative Bacteria in Aquatic Environments in Batna, Algeria. Antibiotics (Basel) 2022; 11:antibiotics11101314. [PMID: 36289972 PMCID: PMC9598638 DOI: 10.3390/antibiotics11101314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/04/2022] [Accepted: 09/13/2022] [Indexed: 12/02/2022] Open
Abstract
Antibiotic-resistant-bacteria are being considered as emerging environmental contaminants where the importance of the surrounding environment in their emergence and dissemination has been emphasized. The aim of this study was to screen for the presence and diversity of carbapenem- and colistin-resistant Gram-negative bacteria (GNBs) in different aquatic environments. Water samples were collected in Batna, Algeria. Carbapenem- and colistin-resistant GNBs were selectively isolated and then identified using matrix-assisted laser desorption and ionization time-of-flight mass spectrometry. After phenotypic antibiotic susceptibility testing, the molecular mechanisms of β-lactams and colistin-resistance were investigated by PCR and sequencing. The clonality of mcr-1 positive Escherichia coli was determined by multi-locus sequence typing. We noticed a high level of resistance in both tap water and wastewater. The most commonly found carbapenem-resistance mechanism was the OXA-48 enzyme, but other carbapenemases were also detected. In addition, the mcr-1 gene was detected in 18 E. coli of different sequence types. Our findings highlight the role of aquatic environments in the dissemination of resistant-bacteria, especially considering that water is a connecting medium between different ecological systems and can easily transmit resistant-bacteria and promote horizontal gene transfer. Thus, the development of effective treatment strategies for eliminating antibiotic-resistance is seriously needed.
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Affiliation(s)
- Zineb Cherak
- Faculté des Sciences de la Nature et de la Vie, Université de Batna 2, Batna 05078, Algeria
| | - Lotfi Loucif
- Laboratoire de Biotechnologie des Molécules Bioactives et de la Physiopathologie Cellulaire (LBMBPC), Faculté des Sciences de la Nature et de la Vie, Université de Batna 2, Batna 05078, Algeria
- Correspondence: ; Tel.: +213-(0)5-40-92-54-00
| | - Esma Bendjama
- Laboratoire de Biotechnologie des Molécules Bioactives et de la Physiopathologie Cellulaire (LBMBPC), Faculté des Sciences de la Nature et de la Vie, Université de Batna 2, Batna 05078, Algeria
- Départements de Technologie Alimentaire, Instituts des Sciences Agronomiques et Vétérinaires, Université El Hadj Lakhdar-Batna 1, Batna 05000, Algeria
| | - Abdelhamid Moussi
- Laboratoire de Génétique, Biotechnologie et Valorisation des Bioressources (GBVB), Faculté des Sciences Exactes et des Sciences de la Nature et de la Vie, Université Mohamed Khider, Biskra 07000, Algeria
| | - Amel Benbouza
- Faculté de Médecine, Université de Batna 2, Batna 05078, Algeria
| | - Nadia Grainat
- Faculté de Médecine, Université de Batna 2, Batna 05078, Algeria
| | - Jean-Marc Rolain
- Faculté de Médecine et de Pharmacie, Aix Marseille Université, IRD, MEPHI, 13007 Marseille, France
- IHU Méditerranée Infection, 13005 Marseille, France
- Assistance Publique des Hôpitaux de Marseille, 13005 Marseille, France
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Loucif L, Chelaghma W, Bendjama E, Cherak Z, Khellaf M, Khemri A, Rolain JM. Detection of blaOXA-48 and mcr-1 Genes in Escherichia coli Isolates from Pigeon (Columba livia) in Algeria. Microorganisms 2022; 10:microorganisms10050975. [PMID: 35630419 PMCID: PMC9143000 DOI: 10.3390/microorganisms10050975] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 04/23/2022] [Accepted: 04/26/2022] [Indexed: 02/04/2023] Open
Abstract
The emergence and spread of β-lactams and colistin-resistant Escherichia coli in birds deserve a special concern worldwide. This study aimed to investigate the presence of β-lactams and colistin-resistant Escherichia coli strains isolated from the faeces of urban and rural pigeons in Batna, Algeria, and to characterise their molecular traits of resistance. Between March and April 2019, a total of 276 faecal droppings samples were collected in Batna, Algeria. Samples were subjected to selective isolation of β-lactams and colistin-resistant Escherichia coli. The representative colonies were then identified using Matrix-Assisted Laser Desorption-Ionization Time-of-Flight Mass Spectrometry. Antimicrobial susceptibility testing was performed using the disc diffusion method. β-lactamases, as well as mcr genes, were screened for by PCR and confirmed by sequencing. Genetic relatedness of the mcr-positive E. coli strains was determined using multi-locus sequence typing analysis. Transferability features of carbapenemase genes were assessed by conjugation experiments. Overall, thirty-five E. coli isolates were obtained only from urban pigeon samples. All carbapenem-resistant isolates harboured the blaOXA-48 gene as the only carbapenemase gene detected (n = 11), while blaESBL genes were detected in eighteen isolates. Out of the thirty-five isolates, four E. coli isolates were positive for the mcr-1 gene. The obtained mcr-1 positive E. coli isolates belonged to four STs, including ST1485, ST224, ST46, and a new ST. This study is the first to report the isolation of E. coli strains carrying the mcr-1 gene from pigeon faeces in Algeria and also the first to report the detection of blaOXA-48-positive E. coli in pigeons. Close surveillance is, therefore, urgently needed to monitor the dissemination of blaOXA-48 and mcr-1 producing E. coli strains in wildlife.
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Affiliation(s)
- Lotfi Loucif
- Laboratoire de Biotechnologie des Molécules Bioactives et de la Physiopathologie Cellulaire (LBMBPC), Faculté des Sciences de la Nature et de la Vie, Université Batna 2, Batna 05000, Algeria; (E.B.); (Z.C.); (M.K.); (A.K.)
- Correspondence: ; Tel.: +213-(0)-540-92-5400
| | - Widad Chelaghma
- Département de Biologie, Université Abou Bekr Belkaid, Tlemcen 13000, Algeria;
| | - Esma Bendjama
- Laboratoire de Biotechnologie des Molécules Bioactives et de la Physiopathologie Cellulaire (LBMBPC), Faculté des Sciences de la Nature et de la Vie, Université Batna 2, Batna 05000, Algeria; (E.B.); (Z.C.); (M.K.); (A.K.)
- Département de Technologie Alimentaire, Institut des Sciences Vétérinaires et des Sciences Agronomiques, Université El Hadj Lakhder-Batna 1, Batna 05000, Algeria
| | - Zineb Cherak
- Laboratoire de Biotechnologie des Molécules Bioactives et de la Physiopathologie Cellulaire (LBMBPC), Faculté des Sciences de la Nature et de la Vie, Université Batna 2, Batna 05000, Algeria; (E.B.); (Z.C.); (M.K.); (A.K.)
| | - Meriem Khellaf
- Laboratoire de Biotechnologie des Molécules Bioactives et de la Physiopathologie Cellulaire (LBMBPC), Faculté des Sciences de la Nature et de la Vie, Université Batna 2, Batna 05000, Algeria; (E.B.); (Z.C.); (M.K.); (A.K.)
| | - Asma Khemri
- Laboratoire de Biotechnologie des Molécules Bioactives et de la Physiopathologie Cellulaire (LBMBPC), Faculté des Sciences de la Nature et de la Vie, Université Batna 2, Batna 05000, Algeria; (E.B.); (Z.C.); (M.K.); (A.K.)
| | - Jean-Marc Rolain
- Faculté de Médecine et de Pharmacie, Aix Marseille Université, IRD, MEPHI, 13005 Marseille, France;
- IHU Méditerranée Infection, Marseille, Assistance Publique des Hôpitaux de Marseille, 13005 Marseille, France
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