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Moghadam MT, Mojtahedi A, Salamy S, Shahbazi R, Satarzadeh N, Delavar M, Ashoobi MT. Phage therapy as a glimmer of hope in the fight against the recurrence or emergence of surgical site bacterial infections. Infection 2024; 52:385-402. [PMID: 38308075 DOI: 10.1007/s15010-024-02178-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 01/05/2024] [Indexed: 02/04/2024]
Abstract
PURPOSE Over the last decade, surgery rates have risen alarmingly, and surgical-site infections are expanding these concerns. In spite of advances in infection control practices, surgical infections continue to be a significant cause of death, prolonged hospitalization, and morbidity. As well as the presence of bacterial infections and their antibiotic resistance, biofilm formation is one of the challenges in the treatment of surgical wounds. METHODS This review article was based on published studies on inpatients and laboratory animals receiving phage therapy for surgical wounds, phage therapy for tissue and bone infections treated with surgery to prevent recurrence, antibiotic-resistant wound infections treated with phage therapy, and biofilm-involved surgical wounds treated with phage therapy which were searched without date restrictions. RESULTS It has been shown in this review article that phage therapy can be used to treat surgical-site infections in patients and animals, eliminate biofilms at the surgical site, prevent infection recurrence in wounds that have been operated on, and eradicate antibiotic-resistant infections in surgical wounds, including multi-drug resistance (MDR), extensively drug resistance (XDR), and pan-drug resistance (PDR). A cocktail of phages and antibiotics can also reduce surgical-site infections more effectively than phages alone. CONCLUSION In light of these encouraging results, clinical trials and research with phages will continue in the near future to treat surgical-site infections, biofilm removal, and antibiotic-resistant wounds, all of which could be used to prescribe phages as an alternative to antibiotics.
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Affiliation(s)
- Majid Taati Moghadam
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Shakiba Salamy
- Department of Microbiology, Faculty of Pharmacy, Islamic Azad University, Tehran, Iran
| | - Razieh Shahbazi
- Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Naghmeh Satarzadeh
- Student Research Committee, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Majid Delavar
- Vice President of Health and Executive Vice President, Rey Health Center, Tehran University of Medical Sciences, Tehran, Iran
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Moghadam MT, Mojtahedi A, Bakhshayesh B, Babakhani S, Ajorloo P, Shariati A, Mirzaei M, Heidarzadeh S, Jazi FM. The Effect of Bacterial Composition Shifts in the Oral Microbiota on Alzheimer's Disease. Curr Mol Med 2024; 24:167-181. [PMID: 35986539 DOI: 10.2174/1566524023666220819140748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/16/2022] [Accepted: 05/30/2022] [Indexed: 11/22/2022]
Abstract
Alzheimer's disease (AD), a neurological disorder, despite significant advances in medical science, has not yet been definitively cured, and the exact causes of the disease remain unclear. Due to the importance of AD in the clinic, large expenses are spent annually to deal with this neurological disorder, and neurologists warn of an increase in this disease in elderly in the near future. It has been believed that microbiota dysbiosis leads to Alzheimer's as a multi-step disease. In this regard, the presence of footprints of perturbations in the oral microbiome and the predominance of pathogenic bacteria and their effect on the nervous system, especially AD, is a very interesting topic that has been considered by researchers in the last decade. Some studies have looked at the mechanisms by which oral microbiota cause AD. However, many aspects of this interaction are still unclear as to how oral microbiota composition can contribute to this disease. Understanding this interaction requires extensive collaboration by interdisciplinary researchers to explore all aspects of the issue. In order to reveal the link between the composition of the oral microbiota and this disease, researchers from various domains have sought to explain the mechanisms of shift in oral microbiota in AD in this review.
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Affiliation(s)
- Majid Taati Moghadam
- Student Research Committee, Iran University of Medical Sciences, Tehran, Iran
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Babak Bakhshayesh
- Department of Neurology, Neuroscience Research Center, Poursina Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Sajad Babakhani
- Department of Microbiology, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Parisa Ajorloo
- Department of Biology, Sciences and Research Branch, Islamic Azad University, Tehran, Iran
| | - Aref Shariati
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
| | - Mehrnaz Mirzaei
- Department of Microbiology, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Siamak Heidarzadeh
- Department of Microbiology and Virology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Faramarz Masjedian Jazi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Sadeghi M, Mojtahedi A, Nikokar I, Roushan ZA. The emergence of plasmid-encoded oxacillinase and carbapenemase among uropathogenic Escherichia coli (UPEC) isolated from hospitalized patients in the North of Iran. Heliyon 2023; 9:e15386. [PMID: 37123931 PMCID: PMC10130876 DOI: 10.1016/j.heliyon.2023.e15386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 04/05/2023] [Accepted: 04/05/2023] [Indexed: 05/02/2023] Open
Abstract
Carbapenemase enzyme production is responsible for resistance to carbapenem among Gram-negative bacteria. This study aimed to detect common carbapenemase and oxacilinase genes among uropathogenic E. coli (UPEC) isolated from hospitalized patients in Rasht, north of Iran. In the present study, from 2000 urine samples, 263 UPEC strains were isolated from inpatients with urinary tract infections (UTI) in 2020. The Kirby-Bauer disk diffusion susceptibility test was used to determine the sensitivity or resistance of isolates to antimicrobial compounds. The double-disk test confirmed extended-spectrum β lactamase (ESBL) production phenotypically, and the presence and distribution of genes encoding carbapenemase and oxacilinase were investigated using polymerase chain reaction (PCR). Based on the findings, 13/263 isolates (8 ESBL and five non-ESBL) showed a non-susceptible phenotype to at least one of the studied carbapenem group antibiotics, and 121 (46%) isolates were ESBL-producers. PCR for oxacilinase and carbapenemase genes was done on all 126 isolates, including ESBL-positive and carbapenem-resistant strains, in which 10 (7.9%) and 25 (19.8%) isolates harbored OXA-1 and IMP genes, respectively. Also, OXA-2, OXA-10, OXA-48, VIM, and NDM genes were not found in any studied isolates. IMP and OXA-1 genes among carbapenemase-producing isolates indicate the possible spread of antibiotic-resistant strains. Hence, identification and control of ESBL and carbapenemase-producing strains, although with almost low frequency due to plasmid genes encoding carbapenemase, is essential for infection control.
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Affiliation(s)
- Mahsa Sadeghi
- Burn and Regenerative Medicine Research Center, Guilan University of Medical Sciences, Rasht, Iran
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
- Corresponding author. Department of Microbiology, School of Medicine, Guilan University Campus, 7th Km of Rasht-Tehran Highway, Rasht, Guilan, Iran.
| | - Iraj Nikokar
- Medical Biotechnology Research Center, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Zahra Atrkar Roushan
- Department of Biostatistics, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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Zare Ashrafi F, Mohseni M, Beheshtian M, Fattahi Z, Ghodratpour F, Keshavarzi F, Behravan H, Kalhor M, Jalalvand K, Azad M, Koshki M, Jafarpour A, Ghaziasadi A, Abdollahi A, Kiani SJ, Ataei-Pirkooh A, Rezaei Azhar I, Bokharaei-Salim F, Haghshenas MR, Babamahmoodi F, Mokhames Z, Soleimani A, Ziaee M, Javanmard D, Ghafari S, Ezani A, Ansari Moghaddam A, Shahraki-Sanavi F, Hashemi Shahri SM, Azaran A, Yousefi F, Moattari A, Moghadami M, Fakhim H, Ataei B, Nasri E, Poortahmasebi V, Varshochi M, Mojtahedi A, Jalilian F, Khazeni M, Moradi A, Tabarraei A, Piroozmand A, Yahyapour Y, Bayani M, Aboofazeli A, Ghafari P, Keramat F, Tavakoli M, Jalali T, Pouriayevali MH, Salehi-Vaziri M, Khorram Khorshid HR, Najafipour R, Malekzadeh R, Kahrizi K, Jazayeri SM, Najmabadi H. Implementation of an In-House Platform for Rapid Screening of SARS-CoV-2 Genome Variations. Arch Iran Med 2023; 26:69-75. [PMID: 37543926 PMCID: PMC10685895 DOI: 10.34172/aim.2023.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 11/16/2022] [Indexed: 08/08/2023]
Abstract
BACKGROUND Global real-time monitoring of SARS-CoV-2 variants is crucial to controlling the COVID-19 outbreak. The purpose of this study was to set up a Sanger-based platform for massive SARS-CoV-2 variant tracking in laboratories in low-resource settings. METHODS We used nested RT-PCR assay, Sanger sequencing and lineage assignment for 930-bp of the SARS-CoV-2 spike gene, which harbors specific variants of concern (VOCs) mutations. We set up our platform by comparing its results with whole genome sequencing (WGS) data on 137 SARS-CoV-2 positive samples. Then, we applied it on 1028 samples from March-September 2021. RESULTS In total, 125 out of 137 samples showed 91.24% concordance in mutation detection. In lineage assignment, 123 out of 137 samples demonstrated 89.78% concordance, 65 of which were assigned as VOCs and showed 100% concordance. Of 1028 samples screened by our in-house method, 78 distinct mutations were detected. The most common mutations were: S:D614G (21.91%), S:P681R (12.19%), S:L452R (12.15%), S:T478K (12.15%), S:N501Y (8.91%), S:A570D (8.89%), S:P681H (8.89%), S:T716I (8.74%), S:L699I (3.50%) and S:S477N (0.28%). Of 1028 samples, 980 were attributed as VOCs, which include the Delta (B.1.617.2) and Alpha (B.1.1.7) variants. CONCLUSION Our proposed in-house Sanger-based assay for SARS-CoV-2 lineage assignment is an accessible strategy in countries with poor infrastructure facilities. It can be applied in the rapid tracking of SARS-CoV-2 VOCs in the SARS-CoV-2 pandemic.
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Affiliation(s)
- Farzane Zare Ashrafi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Marzieh Mohseni
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Maryam Beheshtian
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Zohreh Fattahi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Fatemeh Ghodratpour
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Fatemeh Keshavarzi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Hanieh Behravan
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Marzieh Kalhor
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Khadijeh Jalalvand
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Maryam Azad
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Mahdieh Koshki
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Ali Jafarpour
- Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
- Gerash Amir-al-Momenin Medical and Educational Center, Gerash University of Medical Sciences, Gerash, Iran
| | - Azam Ghaziasadi
- Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Abdollahi
- Department of Pathology, School of Medicine, Imam Khomeini Hospital, Tehran University of Medical Sciences, Iran
| | - Seyed Jalal Kiani
- Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Angila Ataei-Pirkooh
- Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Iman Rezaei Azhar
- Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
| | - Farah Bokharaei-Salim
- Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Haghshenas
- Department of Medical Microbiology, Antimicrobial Resistance Research Center, Communicable Diseases Institute, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Farhang Babamahmoodi
- Department of Medical Microbiology, Antimicrobial Resistance Research Center, Communicable Diseases Institute, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Zakiye Mokhames
- Department of Molecular Diagnostic, Emam Ali Educational and Therapeutic Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Alireza Soleimani
- Department of Infectious Diseases, Imam Ali hospital, Alborz University of Medical Sciences, Karaj, Iran
| | - Masood Ziaee
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Davod Javanmard
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Shokouh Ghafari
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Akram Ezani
- Qazvin Deputy of Treatment Reference Laboratory, Qazvin University of Medical Sciences, Qazvin, Iran
| | | | | | | | - Azarakhsh Azaran
- Department of Medical Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Farid Yousefi
- Department of Infectious Diseases, School of Medicine, Razi Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Afagh Moattari
- Department of Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohsen Moghadami
- Health policy research center, Shiraz University of medical sciences, Shiraz, Iran
| | - Hamed Fakhim
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Behrooz Ataei
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Elahe Nasri
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Vahdat Poortahmasebi
- Department of Bacteriology and Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mojtaba Varshochi
- Infectious and Tropical Disease Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Ali Mojtahedi
- Microbiology Department, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Farid Jalilian
- Department of Medical Virology, Faculty of Medicine, Hamadan University of Medical sciences, Hamadan, Iran
| | | | | | | | - Ahmad Piroozmand
- Department of Microbiology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Yousef Yahyapour
- Infectious Diseases and Tropical Medicine Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Masoumeh Bayani
- Infectious Diseases and Tropical Medicine Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Amir Aboofazeli
- Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
| | - Parsa Ghafari
- Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
| | - Fariba Keramat
- Brucellosis Research Center, Hamedan University of Medical Science, Hamadan, Iran
| | - Mahsa Tavakoli
- COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran
| | - Tahmineh Jalali
- COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran
- Department of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Hassan Pouriayevali
- COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran
- Department of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran
| | - Mostafa Salehi-Vaziri
- COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran
- Department of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran
| | | | - Reza Najafipour
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Cell and Molecular Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Reza Malekzadeh
- Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Kimia Kahrizi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | | | - Hossein Najmabadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
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Behoftadeh F, Faezi Ghasemi M, Mojtahedi A, Issazadeh K, Golshekan M, Alaei S. Development of a newly designed biosensor using multi-walled carbon nanotubes (MWCNTs) with gold nanoparticles (AuNPs) in the presence of acetaminophen for detection of Escherichia coli. Arch Microbiol 2023; 205:70. [PMID: 36680655 DOI: 10.1007/s00203-023-03418-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 01/04/2023] [Accepted: 01/12/2023] [Indexed: 01/22/2023]
Abstract
Escherichia coli is one of the main indicators in the quality control of water, pharmaceuticals, and other samples. Compared with the time-consuming and high prices of the classical methods, with their high risks in the case of insensitive, contamination and offline detections, biosensors have long been a fast and accurate approach for identifying different bacteria. The present study reports the development of a newly electrochemical biosensor using a glassy carbon electrode (GCE) modified by multi-walled carbon nanotubes/AuNPs/E. coli polyclonal antibody/Bovine Serum Albumin in 0.1 M phosphate-buffered saline ( pH 7) in the presence of acetaminophen, for the detection of E. coli in pharmaceuticals and some real samples. Acetaminophen was added as an indicator for the detection of E. coli by changes in conductivity and current. To identify E. coli, square-wave voltammetry (SWV), differential pulse voltammetry (DPV), and cyclic voltammetry (CV) techniques were used. According to the obtained results of square-wave voltammetry, a limit of 3.02 CFU/ml E. coli detection in 3 min with desirable sensitivity, repeatability, and reproducibility was found with the designed biosensor. This biosensor could be a powerful tool for the detection of indicator bacteria in the food industry, drug safety, quality control, clinical diagnostics, and environmental monitoring.
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Affiliation(s)
- Fatemeh Behoftadeh
- Department of Microbiology, Faculty of Basic Sciences, Lahijan Branch, Islamic Azad University, Lahijan, Iran
| | - Mohammad Faezi Ghasemi
- Department of Microbiology, Faculty of Basic Sciences, Lahijan Branch, Islamic Azad University, Lahijan, Iran.
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Khosro Issazadeh
- Department of Microbiology, Faculty of Basic Sciences, Lahijan Branch, Islamic Azad University, Lahijan, Iran
| | - Mostafa Golshekan
- Road Trauma Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - Sholeh Alaei
- Department of Physics, Urmia Branch, Islamic Azad University, Urmia, Iran
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Moghadam MT, Ramírez-Coronel AA, Darijani S, Akbarizadeh MR, Naderifar M, Soltaninejad S, Shahbazi S, Dousari AS, Mojtahedi A, Akhavan-Sigari R. Perturbations in Microbiota Composition as a Novel Mediator in Neuropsychiatric, Neurological and Mental Disorders: Preventive and Therapeutic Complementary Therapies to Balance the Change. Curr Alzheimer Res 2023; 20:213-223. [PMID: 37464825 DOI: 10.2174/1567205020666230718160914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/16/2023] [Accepted: 06/19/2023] [Indexed: 07/20/2023]
Abstract
Although microbiology and neurology are separate disciplines, they are linked to some infectious and neurological diseases. Today, microbiome is considered as one of the biomarkers of health by many researchers. This has led to the association of microbiome changes with many neurological diseases. The natural microbiota has many beneficial properties. If disrupted and altered, it can lead to irreversible complications and many neurological diseases. Therefore, according to previous studies, some preventive and therapeutic complementary therapies can prevent or restore microbiome dysbiosis and inflammation in the nervous system. With our current perception of the microbiological basis for different neurological disorders, both aspects of drug treatment and control of perturbations of the microbiome should be considered, and targeting them simultaneously will likely help to attain favorable results.
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Affiliation(s)
- Majid Taati Moghadam
- Student Research Committee, Iran University of Medical Sciences, Tehran, Iran
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Andrés Alexis Ramírez-Coronel
- Laboratory of Psychometrics, Comparative Psychology and Ethology (LABPPCE), Azogues Campus Nursing Career, Health and Behavior Research Group (HBR), Catholic University of Cuenca, Ecuador
- Epidemiology and Biostatistics Research Group, CES University, Medellín, Colombia
- Department of Psychology, University of Palermo, Buenos Aires, Argentina
| | - Samaneh Darijani
- School of Medicine, Bam University of Medical Sciences, Bam, Iran
| | | | - Mahin Naderifar
- School of Nursing & Midwifery, Zabol University of Medical Sciences, Zabol, Iran
| | - Simin Soltaninejad
- Department of Radiation Oncology, Afzalipour Hospital, Kerman University of Medical Sciences, Kerman, Iran
| | - Shahla Shahbazi
- Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran
| | | | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Reza Akhavan-Sigari
- Department of Neurosurgery, University Medical Center Tuebingen, Tuebingen, Germany
- Department of Health Care Management and Clinical Research, Collegium Humanum Warsaw Management University, Warsaw, Poland
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7
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Hedayati Ch M, Mehmandoost Du E, Golshekan M, Mojtahedi A, Mobayen M. Synthesis of MCM‐41@SO
3
H‐Polymixin B Nanocomposite for Extraction and Determination of Lipopolysaccharide from Aqueous Solutions using Taguchi Fractional Factorial Design. ChemistrySelect 2022. [DOI: 10.1002/slct.202203401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Mojtaba Hedayati Ch
- Virology and Microbial Toxins Department School of Medicine Guilan University of Medical Sciences Rasht Iran 4199613769
| | - Edris Mehmandoost Du
- Virology and Microbial Toxins Department School of Medicine Guilan University of Medical Sciences Rasht Iran 4199613769
| | - Mostafa Golshekan
- Guilan Road Trauma Research Center Guilan University of Medical Sciences Rasht Iran 4193713194
| | - Ali Mojtahedi
- Virology and Microbial Toxins Department School of Medicine Guilan University of Medical Sciences Rasht Iran 4199613769
| | - Mohammadreza Mobayen
- Burn and Regenerative Medicine Research Center Guilan University of Medical Sciences Rasht Iran 4193713194
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8
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Fattahi Z, Mohseni M, Beheshtian M, Jafarpour A, Jalalvand K, Keshavarzi F, Behravan H, Ghodratpour F, Zare Ashrafi F, Kalhor M, Azad M, Koshki M, Ghaziasadi A, Soveyzi M, Abdollahi A, Kiani SJ, Ataei-Pirkooh A, Rezaeiazhar I, Bokharaei-Salim F, Haghshenas MR, Babamahmoodi F, Mokhames Z, Soleimani A, Elahi Z, Ziaee M, Javanmard D, Ghafari S, Ezani A, Ansari Moghaddam A, Shahraki-Sanavi F, Hashemi Shahri SM, Azaran A, Yousefi F, Moattari A, Moghadami M, Fakhim H, Ataei B, Nasri E, Poortahmasebi V, Varshochi M, Mojtahedi A, Jalilian F, Khazeni M, Moradi A, Tabarraei A, Piroozmand A, Yahyapour Y, Bayani M, Tavangar F, Yaghoubi M, Keramat F, Tavakoli M, Jalali T, Pouriayevali MH, Salehi-Vaziri M, Khorram Khorshid HR, Najafipour R, Malekzadeh R, Kahrizi K, Jazayeri SM, Najmabadi H. Disease Waves of SARS-CoV-2 in Iran Closely Mirror Global Pandemic Trends. Arch Iran Med 2022; 25:508-522. [PMID: 37543873 DOI: 10.34172/aim.2022.83] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 04/17/2022] [Indexed: 08/07/2023]
Abstract
BACKGROUND Complete SARS-CoV-2 genome sequencing in the early phase of the outbreak in Iran showed two independent viral entries. Subsequently, as part of a genome surveillance project, we aimed to characterize the genetic diversity of SARS-CoV-2 in Iran over one year after emerging. METHODS We provided 319 SARS-CoV-2 whole-genome sequences used to monitor circulating lineages in March 2020-May 2021 time interval. RESULTS The temporal dynamics of major SARS-CoV-2 clades/lineages circulating in Iran is comparable to the global perspective and represent the 19A clade (B.4) dominating the first disease wave, followed by 20A (B.1.36), 20B (B.1.1.413), 20I (B.1.1.7), leading the second, third and fourth waves, respectively. We observed a mixture of circulating B.1.36, B.1.1.413, B.1.1.7 lineages in winter 2021, paralleled in a fading manner for B.1.36/B.1.1.413 and a growing rise for B.1.1.7, prompting the fourth outbreak. Entry of the Delta variant, leading to the fifth disease wave in summer 2021, was detected in April 2021. This study highlights three lineages as hallmarks of the SARS-CoV-2 outbreak in Iran; B4, dominating early periods of the epidemic, B.1.1.413 (B.1.1 with the combination of [D138Y-S477N-D614G] spike mutations) as a characterizing lineage in Iran, and the co-occurrence of [I100T-L699I] spike mutations in half of B.1.1.7 sequences mediating the fourth peak. It also designates the renowned combination of G and GR clades' mutations as the top recurrent mutations. CONCLUSION In brief, we provided a real-time and comprehensive picture of the SARS-CoV-2 genetic diversity in Iran and shed light on the SARS-CoV-2 transmission and circulation on the regional scale.
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Affiliation(s)
- Zohreh Fattahi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Marzieh Mohseni
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Maryam Beheshtian
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Ali Jafarpour
- Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
- Gerash Amir-al-Momenin Medical and Educational Center, Gerash University of Medical Sciences, Gerash, Iran
| | - Khadijeh Jalalvand
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Fatemeh Keshavarzi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Hanieh Behravan
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Fatemeh Ghodratpour
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Farzane Zare Ashrafi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Marzieh Kalhor
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Maryam Azad
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Mahdieh Koshki
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
| | - Azam Ghaziasadi
- Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohamad Soveyzi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Alireza Abdollahi
- Department of Pathology, School of Medicine, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Jalal Kiani
- Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Angila Ataei-Pirkooh
- Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Iman Rezaeiazhar
- Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
| | - Farah Bokharaei-Salim
- Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Haghshenas
- Department of Medical Microbiology, Antimicrobial Resistance Research Center, Communicable Diseases Institute, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Farhang Babamahmoodi
- Department of Medical Microbiology, Antimicrobial Resistance Research Center, Communicable Diseases Institute, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Zakiye Mokhames
- Department of Molecular Diagnostic, Emam Ali Educational and Therapeutic Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Alireza Soleimani
- Department of Infectious Diseases, Imam Ali hospital, Alborz University of Medical Sciences, Karaj, Iran
| | - Zohreh Elahi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Masood Ziaee
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Davod Javanmard
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Shokouh Ghafari
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Akram Ezani
- Qazvin Deputy of Treatment Reference Laboratory, Qazvin University of Medical Sciences, Qazvin, Iran
| | | | | | | | - Azarakhsh Azaran
- Department of Medical Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Farid Yousefi
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Afagh Moattari
- Department of Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohsen Moghadami
- Health Policy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hamed Fakhim
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Behrooz Ataei
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Elahe Nasri
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Vahdat Poortahmasebi
- Department of Bacteriology and Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mojtaba Varshochi
- Infectious and Tropical Disease Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Ali Mojtahedi
- Microbiology Department, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Farid Jalilian
- Department of Medical Virology, Faculty of Medicine, Hamadan University of Medical sciences, Hamadan, Iran
| | | | | | | | - Ahmad Piroozmand
- Department of Microbiology, School Of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Yousef Yahyapour
- Infectious Diseases and Tropical Medicine Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Masoumeh Bayani
- Infectious Diseases and Tropical Medicine Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Fatemeh Tavangar
- Iranian Blood Transfusion Research Center, High Institute for Education and Research in Transfusion Medicine, Tehran, Iran
| | | | - Fariba Keramat
- Brucellosis Research Center, Hamedan University of Medical Science, Hamadan, Iran
| | - Mahsa Tavakoli
- COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran
| | - Tahmineh Jalali
- COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran
- Department of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Hassan Pouriayevali
- COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran
- Department of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran
| | - Mostafa Salehi-Vaziri
- COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran
- Department of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran
| | | | - Reza Najafipour
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Reza Malekzadeh
- Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Kimia Kahrizi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | | | - Hossein Najmabadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Kariminejad-Najmabadi Pathology & Genetics Center, Tehran, Iran
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9
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Taati Moghadam M, Amirmozafari N, Mojtahedi A, Bakhshayesh B, Shariati A, Masjedian Jazi F. Association of perturbation of oral bacterial with incident of Alzheimer's disease: A pilot study. J Clin Lab Anal 2022; 36:e24483. [PMID: 35689551 PMCID: PMC9279996 DOI: 10.1002/jcla.24483] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE This case-control study was designed to compare the composition of the predominant oral bacterial microbiome in Alzheimer's disease (AD) and control group. SUBJECT A total of 30 adult participants (15 AD and 15 healthy individuals) were entered in this study. The composition of oral bacterial microbiome was examined by quantitative real-time polymerase chain reaction (qPCR) using bacterial 16S rDNA gene. The levels of systemic inflammatory cytokines in both groups were assessed using enzyme-linked immunosorbent assays (ELISA). RESULTS The loads of Porphyromonas gingivalis, Fusobacterium nucleatum, and Prevotella intermedia were significantly more abundant in the AD compared to the control group (p < 0.05). Although Aggregatibacter actinomycetemcomitans and Streptococcus mutans were relatively frequent in the AD group, no significance difference was observed in their copy number between two groups. Although the concentrations of IL-1, IL-6, and TNF-α were higher in the AD group, there was a significant difference in their levels between the two groups (p < 0.05). Finally, there was a significant relationship between increased number of pathogenic bacteria in oral microbiome and higher concentration of cytokines in patient's blood. CONCLUSION Our knowledge of oral microbiome and its exact association with AD is rather limited; our study showed a significant association between changes in oral microbiome bacteria, increased inflammatory cytokines, and AD.
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Affiliation(s)
- Majid Taati Moghadam
- Student Research Committee, Iran University of Medical Sciences, Tehran, Iran.,Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Nour Amirmozafari
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Babak Bakhshayesh
- Department of Neurology, Poursina Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Aref Shariati
- Molecular and medicine research center, Khomein University of Medical Sciences, Khomein, Iran
| | - Faramarz Masjedian Jazi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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10
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Sadeghi M, Sedigh Ebrahim-Saraie H, Mojtahedi A. Prevalence of ESBL and AmpC genes in E. coli isolates from urinary tract infections in the north of Iran. New Microbes New Infect 2022; 45:100947. [PMID: 34984104 PMCID: PMC8693013 DOI: 10.1016/j.nmni.2021.100947] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 10/02/2021] [Accepted: 11/03/2021] [Indexed: 12/26/2022] Open
Abstract
Beta-lactam resistance in Gram-negative bacteria, especially Escherichia coli, is a main clinical problem. It is often caused by the production of β-lactamases, particularly extended-spectrum β-lactamases (ESBLs) or AmpC enzymes. This study was undertaken to characterize ESBL and AmpC producers among Escherichia coli isolates from urine samples. During six months, 263 E. coli isolates were detected by standard biochemical tests. The isolates were screened for ESBL production by the double-disk synergy test using Ceftazidime (30 μg) and Cefotaxime (30 μg) disks and confirmed by combined disk diffusion test using Clavulanic acid. AmpC production was confirmed by an AmpC disk test based on filter paper disks impregnated with EDTA. The presence of genes encoding TEM, SHV, CTX-M, CIT, FOX, MOX, ACC, and EBC were detected by PCR. 263 E. coli isolates were selected for the combined disk (Ceftazidime, Cefotaxime, and Clavulanic acid) assay in the disk agar diffusion test. In the combined disk assay, among 263 isolates, 121 (46%) isolates were detected as ESBLs, and none of the isolates were AmpC producers. PCR performed on all ESBL producers and blaSHV, blaTEM, and blaCTX-M were detected in 42 (34.7%), 44 (36.4%), and 47 (38.8%) cases, respectively. Also, from 48 Isolates with zone diameters of less than or equal to 18 mm to Cefoxitin, 7 (14.6%), 4 (8.3%), and 9 (18.8%) cases contained MOX, EBC, and CIT genes, respectively. DHA, FOX, and ACC genes were not detected in any sample. Since pathogens evolve in the hospital setting, updating local data, such as this research, offers scientific evidence to improve the outcome of nosocomial infections.
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Affiliation(s)
- M. Sadeghi
- Burn and Regenerative Medicine Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - H. Sedigh Ebrahim-Saraie
- Razi Clinical Research Development Unit, Razi Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - A. Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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11
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Bahadori M, Amirjannaty S, Gashti N, Mojtahedi A, Ashouri A. An In vitro study on the protective effect of melatonin on human sperm parameters treated by cadmium. J Hum Reprod Sci 2022; 15:21-26. [PMID: 35494203 PMCID: PMC9053337 DOI: 10.4103/jhrs.jhrs_151_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 02/02/2022] [Accepted: 02/05/2022] [Indexed: 11/04/2022] Open
Abstract
Background: Male infertility account for nearly 50% of infertility cases. Cadmium is regarded as a well-known toxic metal for industrial applications; high amounts of cadmium in the human body can result in chronic toxicity. Melatonin as a free radical scavenger has anti-inflammatory, and even anti-cancer and antiapoptotic functions. Aim: In this work, we evaluated the protective effect of melatonin on human sperm parameters treated by cadmium. Study Setting and Design: This was an experimental study carried out from May to December 2019. Materials and Methods: A total of 41 fresh semen samples were collected from fertile men and were divided into 4 groups: (1) control, (2) sperm +25 Nm cd, (3) sperm +25 nM cd +0.1 mM melatonin,(4) sperm +0.1 mM melatonin treated for 60 min. In all groups, semen analysis was performed for motility, viability and DNA fragmentation index (DFI). Statistical Analysis: The groups were compared using the ANOVA test. Results: The group treated with cadmium showed a significant decrease in rapid and slow motility, and survival rate compared with the control group (P < 0.05). However, the degree of DFI and sperm with non-progressive motility in the group treated with cadmium had a significant increase compared to the control (P < 0.05). The use of melatonin significantly improved sperm parameters such as motility, survival rate and decreased sperm DFI with non-progressive motility. Conclusions: The use of melatonin reduces the amount of cadmium damage in human sperm in vitro.
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12
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Taghizadeh P, Salehi S, Heshmati A, Houshmand SM, InanlooRahatloo K, Mahjoubi F, Sanati MH, Yari H, Alavi A, Jamehdar SA, Dabiri S, Galehdari H, Haghshenas MR, Hashemian AM, Heidarzadeh A, Jahanzad I, Kheyrani E, Piroozmand A, Mojtahedi A, Nikoo HR, Rahimi Bidgoli MM, Rezvani N, Sepehrnejad M, Shakibzadeh A, Shariati G, Seyyedi N, MohammadSaleh Zahraei S, Safari I, Elahi E. Study on SARS-CoV-2 strains in Iran reveals potential contribution of co-infection with and recombination between different strains to the emergence of new strains. Virology 2021; 562:63-73. [PMID: 34265628 PMCID: PMC8214199 DOI: 10.1016/j.virol.2021.06.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/09/2021] [Accepted: 06/09/2021] [Indexed: 11/16/2022]
Abstract
We aimed to describe SARS-CoV-2 strains in Iranians from nine distributed cities infected during two months expanding late 2020 and early 2021 by genotyping known informative single nucleotide in five PCR amplicons. Two variants associated with haplotype H1 (clade G) and nine additional variants associated with other haplotypes were genotyped, respectively, in RNA isolates of 244 and 85 individuals. The variants associated with the H1a (GR) and H1b (GH) haplotypes were most prevalent, indicating a significant change in infection pattern with passage of time. The most important findings were that recombinant genomes and co-infection, respectively, were surmised in 44.7% and 12.9% of the samples extensively genotyped. Partners of many of the recombinations were relatively common strains. Co-existing viruses were among those currently circulating in Iran. In addition to random mutations, co-infection with different existing strains and recombination between their genomes may significantly contribute to the emergence of new SARS-CoV-2 strains.
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Affiliation(s)
- Peyman Taghizadeh
- School of Biology, University College of Science, University of Tehran, Tehran, Iran
| | - Sadegh Salehi
- Cell and Molecular Biology Department, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Ali Heshmati
- School of Biology, University College of Science, University of Tehran, Tehran, Iran
| | - Seyed Massoud Houshmand
- Department of Medical Biotechnology, National Institute for Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | | | - Forouzandeh Mahjoubi
- Department of Medical Biotechnology, National Institute for Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Mohammad Hossein Sanati
- Department of Medical Biotechnology, National Institute for Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Hadi Yari
- Human Genetics Division, Medical Biotechnology Department, National Institute of Genetics Engineering and Biotechnology, Tehran, Iran
| | - Afagh Alavi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Saeid Amel Jamehdar
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Soroosh Dabiri
- Department of Laboratory Sciences, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hamid Galehdari
- Department of Genetics, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mohammad Reza Haghshenas
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Amir Masoud Hashemian
- Department of Emergency Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Abtin Heidarzadeh
- Faculty of Medicine, Guilan University of Medical Sciences, Guilan, Iran
| | | | | | - Ahmad Piroozmand
- Department of Microbiology and Immunology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Ali Mojtahedi
- Microbiology Department, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Hadi Razavi Nikoo
- Department of Microbiology, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | | | - Nayebali Rezvani
- Department of Clinical Biochemistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mehdi Sepehrnejad
- COVID-19 Diagnosis Laboratory, Kashan University of Medical Sciences, Kashan, Iran
| | - Arash Shakibzadeh
- Department of Medical Virology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Gholamreza Shariati
- Department of Medical Genetics, Faculty of Medicine, Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Noorossadat Seyyedi
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Iman Safari
- School of Biology, University College of Science, University of Tehran, Tehran, Iran.
| | - Elahe Elahi
- School of Biology, University College of Science, University of Tehran, Tehran, Iran.
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13
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Aghaee BL, Mirzaei MK, Alikhani MY, Mojtahedi A. Sewage and sewage-contaminated environments are the most prominent sources to isolate phages against Pseudomonas aeruginosa. BMC Microbiol 2021; 21:132. [PMID: 33931013 PMCID: PMC8088035 DOI: 10.1186/s12866-021-02197-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 04/15/2021] [Indexed: 01/21/2023] Open
Abstract
Background P. aeruginosa is the primary source of hospital-acquired infections. Unfortunately, antibiotic resistance is growing to precariously high levels, making the infections by this pathogen life-threatening and hard to cure. One possible alternative to antibiotics is to use phages. However, the isolation of phages suitable for phage therapy— be lytic, be efficient, and have a broad host range —against some target bacteria has proven difficult. To identify the best places to look for these phages against P. aeruginosa we screened hospital sewages, soils, and rivers in two cities. Results We isolated eighteen different phages, determined their host range, infection property, and plaque morphology. We found that the sewage and sewage-contaminated environments are the most reliable sources for the isolation of Pseudomonas phages. In addition, phages isolated from hospital sewage showed the highest efficiency in lysing the bacteria used for host range determination. In contrast, phages from the river had larger plaque size and lysed bacteria with higher levels of antibiotic resistance. Conclusions Our findings provided additional support for the importance of sewage as the source of phage isolation. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02197-z.
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Affiliation(s)
- Bahareh Lashtoo Aghaee
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammadali Khan Mirzaei
- Institute of Virology, Helmholtz Center Munich and Technical University of Munich, 85764, Neuherberg, Bavaria, Germany
| | - Mohammad Yousef Alikhani
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran. .,Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran. .,Brucellosis research center, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
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14
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Ebrahim-Saraie HS, Dehghani B, Mojtahedi A, Shenagari M, Hasannejad-Bibalan M. Functional and Structural Characterization of SARS-Cov-2 Spike Protein: An In Silico Study. Ethiop J Health Sci 2021; 31:213-222. [PMID: 34158771 PMCID: PMC8188087 DOI: 10.4314/ejhs.v31i2.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/06/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the cause of the global outbreak of coronavirus disease 2019 (Covid-19), which has been considered as a pandemic by WHO. SARS-CoV-2 encodes four major structural proteins, among which spike protein has always been a main target for new vaccine studies. This in silico study aimed to investigate some physicochemical, functional, immunological, and structural features of spike protein using several bioinformatics tools. METHOD We retrieved all SARS-CoV-2 spike protein sequences from different countries registered in NCBI GenBank. CLC Sequence Viewer was employed to translate and align the sequences, and several programs were utilized to predict B-cell epitopes. Modification sites such as phosphorylation, glycosylation, and disulfide bonds were defined. Secondary and tertiary structures of all sequences were further computed. RESULTS Some mutations were determined, where only one (D614G) had a high prevalence. The mutations did not impact the B-cell and physicochemical properties of the spike protein. Seven disulfide bonds were specified and also predicted in several N-link glycosylation and phosphorylation sites. The results also indicated that spike protein is a non-allergen. CONCLUSION In summary, our findings provided a deep understanding of spike protein, which can be valuable for future studies on SARS-CoV-2 infections and design of new vaccines.
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Affiliation(s)
- Hadi Sedigh Ebrahim-Saraie
- Razi Clinical Research Development Unit, Razi Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Behzad Dehghani
- Shiraz HIV/AIDS Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Mohammad Shenagari
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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15
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Aghaee BL, Khan Mirzaei M, Alikhani MY, Mojtahedi A, Maurice CF. Improving the Inhibitory Effect of Phages against Pseudomonas aeruginosa Isolated from a Burn Patient Using a Combination of Phages and Antibiotics. Viruses 2021; 13:334. [PMID: 33670028 PMCID: PMC7926668 DOI: 10.3390/v13020334] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/17/2021] [Accepted: 02/18/2021] [Indexed: 12/12/2022] Open
Abstract
Antibiotic resistance causes around 700,000 deaths a year worldwide. Without immediate action, we are fast approaching a post-antibiotic era in which common infections can result in death. Pseudomonas aeruginosa is the leading cause of nosocomial infection and is also one of the three bacterial pathogens in the WHO list of priority bacteria for developing new antibiotics against. A viable alternative to antibiotics is to use phages, which are bacterial viruses. Yet, the isolation of phages that efficiently kill their target bacteria has proven difficult. Using a combination of phages and antibiotics might increase treatment efficacy and prevent the development of resistance against phages and/or antibiotics, as evidenced by previous studies. Here, in vitro populations of a Pseudomonas aeruginosa strain isolated from a burn patient were treated with a single phage, a mixture of two phages (used simultaneously and sequentially), and the combination of phages and antibiotics (at sub-minimum inhibitory concentration (MIC) and MIC levels). In addition, we tested the stability of these phages at different temperatures, pH values, and in two burn ointments. Our results show that the two-phages-one-antibiotic combination had the highest killing efficiency against the P. aeruginosa strain. The phages tested showed low stability at high temperatures, acidic pH values, and in the two ointments. This work provides additional support for the potential of using combinations of phage-antibiotic cocktails at sub-MIC levels for the treatment of multidrug-resistant P. aeruginosa infections.
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Affiliation(s)
- Bahareh Lashtoo Aghaee
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan 65178-38678, Iran;
| | - Mohammadali Khan Mirzaei
- Institute of Virology, Helmholtz Center Munich and Technical University of Munich, 85764 Neuherberg, Germany;
- Department of Microbiology & Immunology, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3G 0B1, Canada
| | - Mohammad Yousef Alikhani
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan 65178-38678, Iran;
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht 41938-33697, Iran
| | - Corinne F. Maurice
- Department of Microbiology & Immunology, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3G 0B1, Canada
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Jafari A, Taziki M, Aski H, Mojtahedi A, Behnampour N, Atarjalali M, rafiei E. Evaluation of the accuracy of the microplate alamar blue assay and the proportion method for the prompt detection of Mycobacterium tuberculosis and susceptibility of multidrug-resistant Mycobacterium tuberculosis clinical isolates. Int J Mycobacteriol 2021. [DOI: 10.4103/2212-5531.307119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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17
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Sadeghi M, Sedigh Ebrahim-Saraie H, Mojtahedi A, Nikokar I, Atrkar Roushan Z. Genetic diversity and prevalence of aminoglycoside modifying enzymes among Escherichia coli strains isolated from inpatients with urinary tract infections. Gene Reports 2020. [DOI: 10.1016/j.genrep.2020.100957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Nemati S, Mohammadghasemi F, Mojtahedi A, Habibi AF, Rouhi S, Leili EKN, Moroosi M. The effects of radiofrequency on the bacteriological and histological characteristics of tonsils in patients with chronic and persistent tonsillitis. Am J Otolaryngol 2020; 41:102657. [PMID: 32829058 DOI: 10.1016/j.amjoto.2020.102657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 08/03/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES Tonsillotomy with radiofrequency (RF) is one of the newest treatments for chronic tonsillitis, but the mechanism of RF effects and complications are still pending. The aim of this study was to evaluate the effects of RF on the histological and bacteriological characteristics of the tonsils (Case-control study). MATERIALS AND METHODS In fifty-two patients with chronic tonsillitis in 2017-2018, immediately after tonsillectomy, the tonsils were divided into 2sections; one sample treated with RF, and the other one considered as control, without intervention. All tonsil samples sent for histological and bacteriological study: morphometric assays made by Digitizer software, and type of bacterial colonies identified by microbiological and biochemical tests. Willcoxon and McNemar tests were used for statistical analysis and level of significance was p ≤ .05. RESULTS Tonsil mucosal thickness (2202.98 ± 323.09 vs. 2463.94 ± 357.61 μm) and size of the tonsil nodule (28,000.42 ± 9608.75 vs. 36,692.81 ± 7040.74 μm2) were significantly lower in the RF+ group than other group (p = .001 and p = .01, respectively). There was no significant differences in thickness of the tonsil epithelium (p = .075), number of lymphoid nodules (p = .860), and the number of reticular tonsil epithelium (p = .813) between the two groups. Bacterial growth in RF- and RF+ groups had no statistically significant difference (p = .06), however, the average colony count of S. aureus in RF+ tonsils were significantly lower, and total number of bacterial colonies were significantly lower in RF+ group(1405 ± 156 vs. 2471 ± 156), (p = .001). CONCLUSION RF surgery has significant effects on size of the nodules, thickness of the mucous layer and bacteriological characteristics of tonsil tissue. Especially S. aureus seems to be more sensitive to RF effects.
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Chakari-Khiavi A, Hasannejad-Bibalan M, Shahriari F, Chakari-Khiavi F, Mojtahedi A, Sedigh Ebrahim-Saraie H. Risk of Helicobacter pylori infection and childhood asthma in Iran: A systematic review and meta-analysis. Gene Reports 2020. [DOI: 10.1016/j.genrep.2020.100792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Tahmasbi F, Sheikhi R, Ashraf A, Mojtahedi A. Biofilm formation and molecular characterization of methicillin-resistant Staphylococcus aureus strains isolated from the patients, personnel, air and environment of ICUs. Gene Reports 2020. [DOI: 10.1016/j.genrep.2020.100736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Hasannejad-Bibalan M, Mojtahedi A, Eshaghi M, Rohani M, Pourshafie MR, Talebi M. The effect of selected Lactobacillus strains on dextran sulfate sodium-induced mouse colitis model. Acta Microbiol Immunol Hung 2020; 67:138-142. [PMID: 32554841 DOI: 10.1556/030.2020.00834] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 05/28/2019] [Indexed: 12/13/2022]
Abstract
Inflammatory bowel disease (IBD) comprises two major illnesses: Crohn's disease (CD) and ulcerative colitis (UC). Dextran sulfate sodium (DSS) mouse colitis model has been used in understanding the mechanism of IBD. This study was conducted to examine selected Lactobacillus spp. as potential IBD treatment in the DSS-induced animal model. Balb/c mice were used and colitis was induced by adding 5% dextran sodium sulfate into the drinking water for 8 days. Colon length, disease activity index (DAI) and histological analysis were measured as markers of inflammation in DSS colitis mice. The majority of the Lactobacillus species significantly prevented the shortening of the colon length compared with the DSS group. The DAI scores of mice were significantly reduced following usage of four Lactobacillus strains included: Lactobacillus plantarum 03 and 06, Lactobacillus brevis 02 and Lactobacillus rhamnosus 01. The histological analysis exhibited that oral administration of Lactobacillus strains had therapeutic effects on mice colitis. L. plantarum and L. brevis showed better therapeutic effect against DSS-induced acute colitis mice. The probiotic activities of these three isolates indicated that the probiotic effects were strain specific and none of these useful bacteria could exhibit all of the valued probiotic properties simultaneously.
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Affiliation(s)
| | - Ali Mojtahedi
- 1Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Morteza Eshaghi
- 2Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Rohani
- 3Department of Microbiology, Pasteur Institute of Iran, Tehran, Iran
| | | | - Malihe Talebi
- 2Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Khanjani S, Sedigh Ebrahim-Saraie H, Shenagari M, Ashraf A, Mojtahedi A, Atrkar Roushan Z. In vitro activity of colistin against multidrug-resistant Acinetobacter baumannii isolates harboring blaOXA-23-like and blaOXA-24-like genes: A multicenter based study. Acta Microbiol Immunol Hung 2020; 67:182-186. [PMID: 32160785 DOI: 10.1556/030.2020.01031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 10/28/2019] [Indexed: 11/19/2022]
Abstract
This study was aimed to evaluate occurrence of antibiotic resistance and the presence of resistance determinants among clinical isolates of Acinetobacter baumannii. This cross-sectional study from January to September 2018 was performed on 59 A. baumannii strains isolated from clinical samples in the north of Iran. Isolates were identified by standard microbiologic tests and molecular method. Antimicrobial susceptibility testing was carried out by disk diffusion and broth microdilution methods. The presence of carbapenem resistance genes was detected by PCR method. All isolates were resistant to cefepime, meropenem, imipenem and ceftazidime. The lowest resistance rate was observed against doxycycline with 33.9%. Minimum inhibitory concentration (MIC) results showed that all carbapenem-resistant A. baumannii (CRAB) isolates were susceptible to colistin with MIC50 and MIC90 values of 1/2 µg/mL. Among 59 CRAB, blaOXA-23-like was the most prevalent gene (86.4%) followed by blaOXA-24-like (69.5%). Meanwhile, none of the clinical isolates harbored blaOXA-58-like gene. We found a high prevalence of CRAB strains harboring OXA-type carbapenemases in the north of Iran. Our results suggests that the presence of OXA-type genes was not directly correlated with the increase of imipenem MIC level, but can be clinically important as they contribute to the selection of CRAB strains.
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Affiliation(s)
- Susan Khanjani
- 1Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Hadi Sedigh Ebrahim-Saraie
- 2Razi Clinical Research Development Unit, Razi Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Mohammad Shenagari
- 1Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Ashraf
- 3Clinical Research Development Unit of Poursina Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Mojtahedi
- 1Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Zahra Atrkar Roushan
- 4Department of Biostatistics, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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Jamali S, Tavakoly T, Mojtahedi A, Shenagari M. The Phylogenetic Relatedness of bla NDM-1 Harboring Extended-Spectrum β-Lactamase Producing Uropathogenic Escherichia coli and Klebsiella pneumoniae in the North of Iran. Infect Drug Resist 2020; 13:651-657. [PMID: 32158241 PMCID: PMC7049266 DOI: 10.2147/idr.s230335] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 02/08/2020] [Indexed: 01/14/2023] Open
Abstract
Background Escherichia coli and Klebsiella pneumoniae as an important part of Enterobacterales family are important causes of both community- and hospital-acquired infections. The present study aimed to investigate the prevalence of antibiotics resistance and molecular characteristics of uropathogenic isolates of E. coli and K. pneumoniae in Iranian patients. Methods This cross-sectional study performed on 223 Escherichia coli and 68 Klebsiella pneumoniae isolates obtained from hospitalized patients in the north of Iran. The isolates were identified by standard microbiologic tests and confirmed by API 20E strip. Disk diffusion method was applied to determine antibiotic susceptibility pattern. The presence of β-lactamases encoding genes was evaluated by PCR method. Analysis of the mutations and homology among sequences was done by the CLC sequence viewer (Qiagen, Denmark), and phylogenetic trees were constructed by the neighbor-joining method (Bootstrap: 1000 times). Results The overall rates of extended-spectrum β-lactamases (ESBLs)-producing E. coli and K. pneumoniae isolates were 37.7% and 32.4%, respectively. The overall presence of blaSHV, blaNDM-1, and blaOXA-1 genes was detected in 16 (5.5%), 12 (4.1%), and 48 (16.4%) of isolates, respectively. The neighbor-joining analysis for E. coli KU985246.1 strain showed that the most related blaNDM-1 sequences were from China, Singapore, UK, Thailand, and Bangladesh. While K. pneumoniae KU985245.1 strains were mostly related to blaNDM-1 sequences form Myanmar, and China. Conclusion In summary, the remarkable rate of ESBL-producing uropathogenic Enterobacterales along with the first prevalence of NDM-1 β-lactamases can be a serious concern in our region.
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Affiliation(s)
- Samar Jamali
- Department of Microbiology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Talayeh Tavakoly
- Department of Microbiology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Ali Mojtahedi
- Department of Microbiology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Mohammad Shenagari
- Cellular and Molecular Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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Nemattalab M, Shenagari M, Taheri M, Mahjoob M, Nazari Chamaki F, Mojtahedi A, Hasan-Alizadeh E, Ashrafkhani B, Mousavi Niri N. Co-expression of Interleukin-17A molecular adjuvant and prophylactic Helicobacter pylori genetic vaccine could cause sterile immunity in Treg suppressed mice. Cytokine 2020; 126:154866. [PMID: 31629103 DOI: 10.1016/j.cyto.2019.154866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 09/15/2019] [Accepted: 09/25/2019] [Indexed: 02/07/2023]
Abstract
The increasing clinical significance of Helicobacter pylori (H. pylori) in human stomach cancer has led to global efforts to eradicate this pathogen. Recent studies have confirmed the importance of some cytokines such as Interleukin-18 (IL-18), Interleukin-8 (IL-8), Interleukin-17A (IL-17A) and Interleukin-22 (IL-22) in the pathogenesis of the so-called bacterium. This study was designed to compare the effects of Type 1T helper (Th1), Type 2T helper (Th2) cells, Regulatory T cells (Treg) and T helper 17 (Th17) modulatory effects on the efficacy of designed H. pylori vaccine by incorporating some molecular adjuvants in Treg competent and Treg suppressed groups. A bicistronic vector was used for simultaneous expression of codon-optimized Outer inflammatory protein a (OipA) gene and modified mice IL-18, IL-17A, IL-22 and Foxp3 (forkhead box P3) cytokines from four cassettes. Immunization of mice groups was performed using produced plasmids intradermally. Specific IgG1 and IgG2 and IgA antibody titers produced in mice were confirmed by enzyme-linked immunosorbent assay (ELISA) in sera and intestine obtained four weeks after the last immunization. After being stimulated with a mixture of both anti-CD28 mAb and H. pylori lysate, frequencies of single Interferon-Gamma (IFN-γ), single IL-17 and dual IFN-γ/IL-17-secreting T-cells were documented using dual-color FluoroSpot. The kinetics of Th1, Th2 and Th17 in the immunized animals was determined by relative quantification of IL-17A, IL-22, IFN-γ, IL-8, IL-2 and IL-4 specific mRNAs. Four weeks after bacterial challenge, quantitative colony count in the isolated and homogenized stomachs was utilized to assess the level of protective immunity among all groups. The results of immunologic assays showed that the highest cell-mediated immunity cytokines were produced in IL-17 receiving group in which the Treg responses were suppressed previously by the administration of the Foxp3 as an immunogen. In addition, potent clearance of Helicobacter pylori infection was seen in this group as well.
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Affiliation(s)
- Mehran Nemattalab
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Mohammad Shenagari
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran; Cellular and Molecular Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
| | - Mojtaba Taheri
- Department of Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Mahjoob
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | | | - Ali Mojtahedi
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran; Cellular and Molecular Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | | | - Babak Ashrafkhani
- Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Neda Mousavi Niri
- Department of Biotechnology, Faculty of Advanced Medical Sciences, Tehran Medical Branch, Islamic Azad University, Tehran, Iran
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Moein N, Alavi FN, Salari A, Mojtahedi A, Tajer A. Effect of Listerine Mouthwash with Green Tea on the Inhibition of Streptococcus Mutans: A Microbiologic Study. Pesqui Bras Odontopediatria Clín Integr 2020. [DOI: 10.1590/pboci.2020.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
| | | | | | | | - Amir Tajer
- Guilan University of Medical Sciences, Iran
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26
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Hasannejad-Bibalan M, Mojtahedi A, Biglari H, Halaji M, Sedigh Ebrahim-Saraie H. Antibacterial Activity of Tedizolid, a Novel Oxazolidinone Against Methicillin-Resistant Staphylococcus aureus: A Systematic Review and Meta-Analysis. Microb Drug Resist 2019; 25:1330-1337. [DOI: 10.1089/mdr.2018.0457] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Haniyeh Biglari
- Student Research Committee, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Mehrdad Halaji
- Department of Microbiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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Shahini Shams-Abadi M, Halaji M, Hoseini-Alfatemi SM, Gholipour A, Mojtahedi A, Sedigh Ebrahim-Saraie H. Epidemiology of toxic shock syndrome toxin-1 harboring Staphylococcus aureus obtained from clinical samples in Iran: A Systematic Review and Meta-analysis. Ann Ig 2019; 30:391-400. [PMID: 30062367 DOI: 10.7416/ai.2018.2239] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND S. aureus strains, with the capability of producing toxic shock syndrome toxin-1 (TSST-1), are more likely to cause complicated infections. However, due to lack of comprehensive local data on the prevalence of TSST-1, we aimed to determine the prevalence of TSST-1 harboring S. aureus isolates in Iran. METHODS A systematic search was performed by using PubMed and Scopus databases from papers published by Iranian authors from January 2000 to the end of March 2017. Then, 10 publications which were matched with inclusion criteria were selected for data extraction and analysis by Comprehensive Meta-Analysis Software. RESULTS The overall prevalence of TSST-1 carrying S. aureus in Iran was 21.3% (95% CI: 7.9%-46.1%), ranging from 0% to 68%. Moreover, from the included studies, the pooled prevalence of TSST-1 producing MRSA isolates was estimated to be 25.2% (95% CI: 13.3%-42.5%), ranging from 0% to 69.8%. From those studies which showed the distribution of toxin-harboring S. aureus it was found that the skin and soft tissue, respiratory and bloodstream infections were the common sites of TSST-1 harboring S. aureus. CONCLUSIONS In summary, it seems that emergence of MRSA strains leads to higher prevalence of TSST-1 carrying strains in the north of Iran. However, further research is required to elucidate the interplay between the outcome of diseases and TSST-1 producing strains, especially in our country.
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Affiliation(s)
- M Shahini Shams-Abadi
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M Halaji
- Department of Microbiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - S M Hoseini-Alfatemi
- Pediatric Infections Research Center, Research institute for Children Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - A Gholipour
- Department of Microbiology and Immunology, Cellular and Molecular Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - A Mojtahedi
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - H Sedigh Ebrahim-Saraie
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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Haghighatpanah M, Mojtahedi A. Characterization of antibiotic resistance and virulence factors of Escherichia coli strains isolated from Iranian inpatients with urinary tract infections. Infect Drug Resist 2019; 12:2747-2754. [PMID: 31564925 PMCID: PMC6731957 DOI: 10.2147/idr.s219696] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 08/24/2019] [Indexed: 12/14/2022] Open
Abstract
Background Urinary tract infections (UTIs) are one of the most frequent human infectious diseases causing considerable amount of morbidity and mortality. The present study aimed to investigate the occurrence of antibiotics resistance and virulence genes among Escherichia coli strains isolated from UTIs in the north of Iran. Methods This cross-sectional study was performed at 5 teaching hospitals in Rasht in the north of Iran. Totally, 129 E. coli isolates were identified by standard microbiologic tests. Antimicrobial susceptibility pattern was determined using disk diffusion method. The presence of virulence genes was detected by PCR method. Results The results of antibiotic susceptibility showed that the highest resistance rates were to ampicillin (78.3%) followed by nalidixic acid (74.4%) and trimethoprim/sulfamethoxazole (69.8%). On the other hand, the highest susceptibility was toward nitrofurantoin (96.1%) and imipenem (92.2%). Further analysis revealed that the rate of ESBL-producing and multiple-drug resistant isolates was 51.2% and 84.5%, respectively. Molecular analysis revealed that traaT (87.6%) gene was the most prevalent virulence factors followed by fyuA (86%) and kpsmt (76%) genes. Also, fimH gene was the most frequently detected adhesion-associated gene with 74.4%. Conclusion In summary, our results showed a remarkable rate of drug resistance and heterogeneity for virulence factors among E. coli strains isolated from UTIs in the north of Iran. The emergence of such strains can be a predictive marker for their persistence in the hospital and consequently a significant threat for hospitalized patients.
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Affiliation(s)
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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Asl SF, Pourvahedi M, Mojtahedi A, Shenagari M. Analysis of babA, cagE and cagA Genes in Helicobacter pylori from Upper Gastric Patients in the North of Iran. Infect Disord Drug Targets 2019; 19:274-278. [PMID: 29766826 DOI: 10.2174/1871526518666180515113218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/20/2018] [Accepted: 04/10/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Helicobacter pylori is a Gram-negative bacterium which has a serious effect on up to half of the world's population and has been related to different gastric diseases. The goal of this study was to assess the frequency of babA, cagE and cagA genotypes among H. pylori strains isolated from gastric biopsies of endoscopic patients in the north of Iran. METHODS The present study was performed on 90 strains of H. pylori isolated from patients with gastric diseases (Gastric ulcer (GU), Duodenal ulcer (DU), Gastritis (G), Non-ulcer dyspepsia (NUD) and Gastric adenocarcinoma (GC)). DNA was extracted from all isolated strains and PCR method was performed to detect the prevalence of babA2, cagE and cagA genes using specific primers. RESULTS Among 90 samples of H. pylori, babA2, cagE, and cagA genes were detected in 42.2%, 30% and 82.2% of strains respectively. The statistical analysis showed that the prevalence of cagA gene in GU, G, DU, and NUD was significantly higher than other genes. Moreover, cagA, and babA2 genes were significantly more prevalent in GC patients compared to cagE gene. Our isolates exhibited 8 distinct arrangements of virulence patterns. The occurrence of cagA (35.6%) was the most prevalent pattern followed by cagA/babA2 (20%) and cagA/babA2/cagE (14.4%). CONCLUSION In summary, as first report from Guilan province in the north of Iran, we showed significant association between the presence of babA2, cagE, and cagA genes in different types of gastric disorders.
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Affiliation(s)
- Saba Fakhrieh Asl
- Internal Medicine Department, Poursina Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Mehrnaz Pourvahedi
- Genetics Department, Faculty of Basic Sciences, Guilan University, Rasht, Iran
| | - Ali Mojtahedi
- Cellular and Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
- Microbiology Department, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Mohammad Shenagari
- Microbiology Department, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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Mojtahedi A, Fakhrieh Asl S, Aminian K, Pourvahedi M, Saadat F, Fallah Karkan M. The association between iceA and vacA allelic gene variations of Helicobacter pylori strains and gastric disorders. Gene Reports 2018. [DOI: 10.1016/j.genrep.2018.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Asgharzadeh Kangachar S, Mojtahedi A. Evaluation of integrons classes 1–3 in extended spectrum beta-lactamases and multi drug resistant Escherichia coli isolates in the North of Iran. Gene Reports 2018. [DOI: 10.1016/j.genrep.2018.07.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Abstract
OBJECTIVES Listeria monocytogenes is a foodborne pathogenic bacteria causing the infection listeriosis, which possibly affects all people, particularly immunocompromised persons and pregnant women. This microorganism can be found in several processed foods, dairy products, raw milk, meat and fish products, seafoods, eggs, fruits, and vegetables. This review discusses about the epidemiological significance, incidence, contamination routes of L. monocytogenes in different products and current data about listeriosis in the Iran. MATERIALS AND METHODS For accessing to relevant articles and studies, a search was done in main databases and also, almost all Iranian published articles were studied in this field. RESULTS Outbreaks of listeriosis have been reported in many parts of the worldwide, however there is scanty data about the prevalence of listeriosis in Iran. Accordingly, as a result of high incidence of L. monocytogenes in women with bad obstetric history or history of abortions, diagnosis procedures for detection of L. monocytogenes and timely treatment was suggested. CONCLUSION In spite of low incidence of infection in the past, increased interest for lightly preserved and/or ready-to-eat (RTE) food products has recently led to increasing of L. monocytogenes prevalence which has become a public health concern. Subsequently, further researches about the prevalence of L. monocytogenes and also antibiotic susceptibility testing is needed to enable the detection of the contaminated foods, as well as ensures the effective treatment.
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Affiliation(s)
- Abed Zahedi Bialvaei
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Vajihe Sheikhalizadeh
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Mojtahedi
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Gholamreza Irajian
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran,Corresponding author: Gholamreza Irajian. Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. Tel: +98-21-66728112-3 (103); Fax: +98-21-66728121;
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Ghaffarian F, Hedayati M, Sedigh Ebrahim-Saraie H, Atrkar Roushan Z, Mojtahedi A. Molecular epidemiology of ESBL-producing Klebsiella pneumoniae isolates in intensive care units of a tertiary care hospital, North of Iran. Cell Mol Biol (Noisy-le-grand) 2018. [DOI: 10.14715/cmb/2018.64.7.13] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Ghaffarian F, Hedayati M, Sedigh Ebrahim-Saraie H, Atrkar Roushan Z, Mojtahedi A. Molecular epidemiology of ESBL-producing Klebsiella pneumoniae isolates in intensive care units of a tertiary care hospital, North of Iran. Cell Mol Biol (Noisy-le-grand) 2018; 64:75-79. [PMID: 29974849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 04/27/2018] [Accepted: 05/01/2018] [Indexed: 06/08/2023]
Abstract
The emergence of extended-spectrum beta-lactamases (ESBL) producing strains become a great concern, because few antimicrobial agents remain active against them. Due to the lack of data on the genotyping characteristics and antibiotics resistance of clinical isolates of Klebsiella pneumoniae in the north of Iran, this study aimed to determine the occurrence of ESBL-producing isolates and their molecular characteristics in order to analyses their epidemiological relationships. This cross-sectional study performed on 60 K. pneumoniae isolates which were recovered from different clinical specimens within May and November 2016. Isolates were identified by standard microbiologic tests and confirmed by API 20E strip. Antimicrobial susceptibility testing was carried out by disk diffusion method. The genetic relatedness among the isolates was assessed by RAPD-PCR. Totally, the lowest level of susceptibility was toward amoxicillin/clavulanat, and nalidixic acid. On the other hand, the highest level of susceptibility was toward imipenem (86.7%). The rate of ESBL-producing isolates was 45% (27/60). There was a significant association between production of ESBLs and higher antibiotic resistance in tested isolates. The RAPD-PCR dendrogram revealed 5 major clusters with a similarity of 80% which indicates the high relatedness of the studied isolates. Twenty-one isolates out of the 27 ESBL-producing isolates were clustered in cluster A. In summary, results showed the high prevalence of multiple-drug resistant and ESBL-producing K. pneumoniae isolates in our ICUs. Also, results revealed a significant similarity between ESBL-producing isolates that necessitate restricted infection control policies and rational prescription and use of antibiotics.
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Affiliation(s)
- Fatemeh Ghaffarian
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Mojtaba Hedayati
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Hadi Sedigh Ebrahim-Saraie
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Atrkar Roushan
- Department of biostatistics, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Mojtahedi
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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Karimpour M, Ashrafi SD, Taghavi K, Mojtahedi A, Roohbakhsh E, Naghipour D. Adsorption of cadmium and lead onto live and dead cell mass of Pseudomonas aeruginosa: A dataset. Data Brief 2018; 18:1185-1192. [PMID: 29900292 PMCID: PMC5997576 DOI: 10.1016/j.dib.2018.04.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 03/22/2018] [Accepted: 04/04/2018] [Indexed: 12/07/2022] Open
Abstract
In this research heavy metals, Cd and Pb, adsorption efficiency was evaluated in aqueous solutions using live and dead biomass of Pseudomonas aeruginosa bacteria. The various important parameters including; pH, temperature, Cd and Pb concentrations, contact time, live and dead cell mass were examined. First, the resistant P. aeruginosa to heavy metals identified and isolated from contaminated soil. Then, the Minimum Inhibitory Concentration (MIC) of Cd and Pb was determined for P. aeruginosa. The highest adsorption efficiency for Cd and Pb were 87% and 98.5%, under dead cell mass of 125 mg, pH 7, temperature 35 °C and contact time 90 min, respectively. The results of this study showed that P. aeruginosa have a high ability to adsorption of Cd and Pb in aqueous solutions.
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Affiliation(s)
- Mahnaz Karimpour
- School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Seyed Davoud Ashrafi
- School of Health, Guilan University of Medical Sciences, Rasht, Iran.,Research Center of Health and Environment, Guilan University of Medical Sciences, Rasht, Iran
| | - Kamran Taghavi
- School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Mojtahedi
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | | | - Dariush Naghipour
- School of Health, Guilan University of Medical Sciences, Rasht, Iran
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Tavakoly T, Jamali S, Mojtahedi A, Khan Mirzaei M, Shenagari M. The prevalence of CMY-2, OXA-48 and KPC-2 genes in clinical isolates of Klebsiella spp. ACTA ACUST UNITED AC 2018; 64:40-44. [PMID: 29506629 DOI: 10.14715/cmb/2018.64.3.7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 12/05/2017] [Accepted: 12/11/2017] [Indexed: 11/18/2022]
Abstract
Klebsiella pneumoniae is a Gram-negative bacterium which causes several human infections. Treatment of infections related to K. pneumoniae has become problematic, because of increasing trend of extended spectrum β-lactamases producing (ESBLs) strains. The present study was aimed to detect the prevalence of ESBL-producing Klebsiella spp. and KPC-2, CMY-2 and OXA-48 β-lactamase encoding genes in clinical isolates of Klebsiella spp. isolated from hospitalized patients. In this cross-sectional study carried out from February to August 2014, 144 isolates of Klebsiella spp. were collected from different clinical specimens in hospitals in the North of Iran. Klebsiella isolates were identified using standard microbiological procedure. Antimicrobial susceptibility patterns were determined using disk diffusion method in accordance with CLSI recommendation. The presence of antibiotic resistance genes were investigated by PCR method. Among 144 Klebsiella spp., 118 isolates were identified as K. pneumoniae and 26 isolates as Klebsiella oxytoca. Antibiotic susceptibility test showed the most resistance rates were against amoxicillin (96.5%) and ampicillin (95.8%). On the other hand, the most effective antibiotic was revealed to be imipenem with resistance rate of 4.9% (Table 2). Among 144 isolated Klebsiella strains, 57 cases (39.6%) were ESBL producers. The OXA-48 and KPC-2 genes were not detected among Klebsiella spp. during the present study, but 21.1% of isolates contained CMY-2 gene. This is the first report of CMY-2 gene detection in Klebsiella spp. in Iran. The homology between CMY-2 genes identified in isolates from Northern Iran and in other countries showed the wide dispersion of this gene around the world.
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Affiliation(s)
- Talayeh Tavakoly
- Department of Microbiology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Samar Jamali
- Department of Microbiology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Ali Mojtahedi
- Cellular and Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | | | - Mohammad Shenagari
- Cellular and Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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37
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Naghipour D, Ashrafi SD, Mojtahedi A, Vatandoost M, Hosseinzadeh L, Roohbakhsh E. Data on microbial and physiochemical characteristics of inlet and outlet water from household water treatment devices in Rasht, Iran. Data Brief 2018; 16:1005-1009. [PMID: 29322082 PMCID: PMC5752093 DOI: 10.1016/j.dib.2017.12.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 12/14/2017] [Indexed: 12/07/2022] Open
Abstract
In this research, we measured various parameters related to drinking water quality include turbidity, temperature, pH, EC, TDS, Alkalinity, fecal and total coliform, heterotrophic plate count (HPC), free chlorine, Mn, Ca, Mg, Fe, Na, Cl−, F−, HCO3, in the inlet and outlet of household water treatment devices according to the standard methods for the examination of water and wastewater (W.E. Federation and Association and A.P.H., 2005) [1]. Sixty four inlet and outlet water samples were taken from thirty two household water treatment devices from eight different residential blocks in Golsar town of Rasht, Iran. The data obtained from experiments were analyzed using the software Special Package for Social Sciences (SPSS 24) and MS-Excel.
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Affiliation(s)
- Dariush Naghipour
- School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Seyed Davoud Ashrafi
- School of Health, Guilan University of Medical Sciences, Rasht, Iran.,Research Center of Health and Environment, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Mojtahedi
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Masoud Vatandoost
- School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | | | - Esmail Roohbakhsh
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
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38
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Nemattalab M, Shenagari M, Mojtahedi A, Aghasadeghi MR, Pouriayevali MH, Taheri M, Mondannizadeh M. Design, cloning and expression assay of oipA gene in a bicistronic vector harboring mice IL-18 gene: potential implications for Helicobacter pylori vaccine investigations. JBRMS 2017. [DOI: 10.29252/jbrms.4.3.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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39
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Asgharzadeh Kangachar S, Mojtahedi A. The presence of extended-spectrum β-lactamase as a risk factor for MDR in clinical isolation of Escherichia coli. Trop Biomed 2017; 34:98-109. [PMID: 33592987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Significant increases in antibiotic resistance have become a critical dilemma in healthcare systems around the world. Enterobacteriaceae acquired different mechanisms of antibiotic resistance such as ESBLs production and transposon attainment, which hold antibiotic resistance genes. This may create multidrug resistant (MDR) strains. Antibiotic resistance patterns vary in different geographical regions. The present estimated-cross sectional study is aimed to determine antibiotic resistance pattern of 182 E. coli strains to 20 antibiotics. Three different methods were applied to detect the ESBL-producing E. coli. Observations revealed that oxacillin, amoxicillin and ampicillin had the lowest effect, while imipenem, gentamicin and nitrofurantoin had the highest impact on clinical E. coli strains in our region. Three different methods, including double disk synergy test (DDST) (30 mm), double disk synergy test (DDST) (20mm) and combined disk test were used to identify ESBL-producing E. coli. The prevalence of ESBL producers was at a 35.71% rate. Findings of this study indicate that there is no significant difference between these three methods in identifying ESBLproducing E. coli. There was a significant relation between ESBL production and resistance to three other classes of antibiotics, including protein synthesis inhibitor, Quinolones and Metabolite analogues. Moreover, antibiotic resistance rate in ESBL-producing E. coli was significantly higher than non ESBL- producing isolates. The MDR was at a 65.93% rate. Unfortunately, the rate of antibiotic resistance is globally increasing; this is due to several factors such as inappropriate antibiotic use, incomplete course of antibiotics use, protracted length of stay in hospitals and self-medication. Resistance mechanisms such as ESBL production and MDR cause treatment failure. Our findings suggest that ESBL production is a risk factor for MDR in clinical E. coli. Therefore, Physicians are recommended to stop excessive and long term administration of antibiotics.
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Affiliation(s)
| | - A Mojtahedi
- Molecular and Cellular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht-Iran
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40
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Haghighatpanah M, Mozaffari Nejad AS, Mojtahedi A, Amirmozafari N, Zeighami H. Detection of extended-spectrum β-lactamase (ESBL) and plasmid-borne bla CTX-M and bla TEM genes among clinical strains of Escherichia coli isolated from patients in the north of Iran. J Glob Antimicrob Resist 2016; 7:110-113. [PMID: 27721192 DOI: 10.1016/j.jgar.2016.08.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 08/02/2016] [Accepted: 08/10/2016] [Indexed: 01/22/2023] Open
Abstract
Escherichia coli is an important cause of hospital-acquired infections worldwide. Antimicrobial resistance leads to treatment failure of hospital infections caused by E. coli. Production of extended-spectrum β-lactamases (ESBLs) is one of the major causes of antibiotic resistance in these bacteria. This study aimed to investigate the frequency of blaTEM and blaCTX-M genes in ESBL-producing E. coli strains isolated from clinical specimens of patients admitted to six hospitals in the north of Iran. A total of 160 E. coli strains were isolated from various clinical samples of hospitalised patients. Antibiotic resistance patterns were determined by the Kirby-Bauer disk diffusion method. The double-disk phenotypic confirmatory test was carried out amongst β-lactam-resistant isolates to detect ESBL-producing strains. Plasmid DNA of ESBL-producing strains was extracted and subjected to PCR for detection of the blaTEM and blaCTX-M genes, and isolates were extensively verified by sequencing. The highest resistance rate was to amoxicillin; all E. coli isolates (100%) were susceptible to imipenem. Amongst the 160 clinical E. coli isolates, 83 (51.9%) were ESBL-positive, of which 27 (32.5%) and 72 (86.7%) were positive for blaTEM and blaCTX-M, respectively. This study is the first report of an ESBL phenotype disseminated in hospitals in the north of Iran. These findings showed that there was a direct relationship between the development of resistance to β-lactam antibiotics and production of TEM and CTX-M enzymes.
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Affiliation(s)
| | - Amir Sasan Mozaffari Nejad
- Department of Microbiology, Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ali Mojtahedi
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
| | - Nour Amirmozafari
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Habib Zeighami
- Department of Microbiology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
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Eghbali Z, Mojtahedi A, Moien Ansar M, Fakhrieh Asl S, Aminian K. Detection of 23SrRNA Mutations Strongly Related to Clarithromycin Resistance in Helicobacter pylori Strains Isolated From Patients in the North of Iran. Jundishapur J Microbiol 2016; 9:e29694. [PMID: 27127590 PMCID: PMC4842254 DOI: 10.5812/jjm.29694] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 11/23/2015] [Accepted: 12/02/2015] [Indexed: 12/11/2022] Open
Abstract
Background: Helicobacter pylori is curved Gram negative and microaerophilic bacilli that have infected half of the world’s population. It is recognized as the causative agent of duodenal ulcer, gastritis peptic ulcer, mucosa-associated lymphoid tissue (MALT) lymphoma and is associated with gastric adenocarcinoma. Resistance to clarithromycin is related to point mutations in 23SrRNA gene on nt 2143 and 2144, when A turns to G, and A2143G is the most important type. These mutations lead to reduced affinity of antibiotics to their ribosomal target and are considered as the main cause of treatment failure. Objectives: The aim of this study was to determine the frequency of A2143G point mutation in 23SrRNA of H.pylori strains isolated from gastric biopsies of patients in Rasht, north of Iran, by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Patients and Methods: A descriptive study was performed on 89 H.pylori strains, which were isolated from gastric biopsies of patients with gastric disorders such as gastritis, peptic ulcer, duodenal ulcer, non-ulcer dyspepsia and gastric adenocarcinoma. Isolated strains were tested for clarithromycin resistance using as breakpoint a minimum inhibitory concentration (MIC) of ≥ 1 mg/L by the E-test. The presence of H.pylori DNA was confirmed by amplifying the ureC (glmM) gene by PCR. Also, point mutation on 23SrRNA gene (A2142G and A2143G) was detected by PCR-RFLP using MboII and BsaI restriction endonucleases in all extracted DNA. Results: Of the 89 H.pylori isolates, eighty-four were susceptible to clarithromycin, while five (5.6%) were resistant. All DNA samples of resistant strains, which were treated with BsaI had A2143G mutation. There was no point mutation in the sensitive strains of H. pylori. Also, we detected no mutation on nt A2142G of resistant strains. Conclusions: In the present study, the frequency of clarithromycin resistance was lower than the other studies conducted in Iran. Resistance frequency in samples isolated from gastric ulcer was higher than other gastric disorders. Women and patients aged more than 60 years old showed the most resistance frequency in this study. All resistant strains had the A2143G genotype.
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Affiliation(s)
- Zahra Eghbali
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, IR Iran
| | - Ali Mojtahedi
- Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, IR Iran
- Corresponding author: Ali Mojtahedi, Microbiology Department, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, IR Iran. Tel: +98-1333690884, Fax: +98-1333690036, E-mail:
| | - Malek Moien Ansar
- Department of Biochemistry and Biophysics, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, IR Iran
| | - Saba Fakhrieh Asl
- Division of Gastroenterology and Liver Disease, Gastric and Liver Disease Research Center, Guilan University of Medical Sciences, Rasht, IR Iran
| | - Keyvan Aminian
- Division of Gastroenterology and Liver Disease, Gastric and Liver Disease Research Center, Guilan University of Medical Sciences, Rasht, IR Iran
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Maleknejad S, Mojtahedi A, Safaei-Asl A, Taghavi Z, Kazemnejad E. Primary Antibiotic Resistance to Helicobacter pylori Strains Isolated From Children in Northern Iran: A Single Center Study. Iran J Pediatr 2015; 25:e2661. [PMID: 26635938 PMCID: PMC4662838 DOI: 10.5812/ijp.2661] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 08/25/2015] [Accepted: 09/05/2015] [Indexed: 02/06/2023]
Abstract
Background: Initial resistance to antibiotics is the main reason for the failure of Helicobacter pylori (H. pylori) eradication in children. Objectives: As we commonly face high antibiotic resistance rates in children, we aimed to determine the susceptibility of H. pylori to common antibiotics. Patients and Methods: In this cross-sectional in vitro study, 169 children younger than 14 years with clinical diagnosis of peptic ulcer underwent upper gastrointestinal endoscopy. Biopsy specimens from stomach and duodenum were cultured. In isolated colonies, tests of catalase, urease, and oxidase as well as gram staining were performed. After confirming the colonies as H. pylori, the antibiogram was obtained using disk diffusion method. Results: Culture for H. pylori was positive in 12.3% of the specimens, urease test in 21.3%, serological test in 18.9% and stool antigen test was positive in 21.9%. We could show high specificity but moderate sensitivity of both histological and H. pylori stool antigen tests to detect H. pylori. The overall susceptibility to metronidazole was 42.9%, amoxicillin 95.2%, clarithromycin 85.7%, furazolidone 61.9%, azithromycin 81.0%, and tetracycline 76.2% with the highest resistance to metronidazole and the lowest to clarithromycin. Conclusions: In our region, there is high resistance of H. pylori to some antibiotics including metronidazole and furazolidone among affected children. To reduce the prevalence of this antibiotic resistance, more controlled use of antibiotics should be considered in children.
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Affiliation(s)
- Shohreh Maleknejad
- Department of Pediatrics, 17th Shahrivar Hospital, Guilan University of Medical Sciences, Rasht, IR Iran
- Corresponding author: Shohreh Maleknejad, Department of Pediatrics, 17th Shahrivar Hospital, Guilan University of Medical Sciences, Rasht, IR Iran. Tel: +98-1313226101, Fax: +98-1313226101, E-mail:
| | - Ali Mojtahedi
- Department of Pediatrics, 17th Shahrivar Hospital, Guilan University of Medical Sciences, Rasht, IR Iran
| | - Afshin Safaei-Asl
- Department of Pediatrics, 17th Shahrivar Hospital, Guilan University of Medical Sciences, Rasht, IR Iran
| | - Zeinab Taghavi
- Department of Pediatrics, 17th Shahrivar Hospital, Guilan University of Medical Sciences, Rasht, IR Iran
| | - Ehsan Kazemnejad
- Department of Pediatrics, 17th Shahrivar Hospital, Guilan University of Medical Sciences, Rasht, IR Iran
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Moradian kouchaksaraei F, Ferdosi Shahandashti E, Molana Z, Moradian kouchaksaraei M, Asgharpour F, Mojtahedi A, Rajabnia R. Molecular detection of integron genes and pattern of antibiotic resistance in pseudomonas aeruginosa strains isolated from intensive care unit, shahid beheshti hospital, north of iran. Int J Mol Cell Med 2012; 1:209-17. [PMID: 24551780 PMCID: PMC3920509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 02/11/2013] [Indexed: 11/25/2022]
Abstract
Pseudomonas aeruginosa is one of the most important pathogens that causes nosocomial infections and shows high level of antibiotic resistance. Integrons are one of the transposable elements in bacteria and their role in antibiotic resistance has been well demonstrated. The aim of this study was a molecular characterization of the integron genes and the determination of the resistance or sensitivity pattern to ceftizoxime, cephizoxim. cephotaxim, amikacin, ofloxacin, imipenem, cefepime, ticarcillin, gentamicin, ciprofloxacin, cefazolin and ceftriaxone antibiotics in P. aeruginosa strains isolated from Intensive Care Units (ICU), Shahid Beheshti Hospital, North of Iran. This cross-sectional study was performed from 2011 to 2012. Totally, fifty four P. aeruginosa strains were isolated from ICU at Shahid-Beheshti hospital, Babol, North of Iran. The bacteria were diagnosed based on mobility, pigment production, growth in 42(0) C, oxidase and catalase tests. PCR analysis was carried out to detect integron genes using hep 35 and hep 36 primers. Also, disk diffusion method was performed to evaluate antibiotic susceptibility of the bacteria using ceftizoxime, ceftazidime, cephotaxime, amikacin, ofloxacin, imipenem, cefepime, ticarcillin, gentamicin, ciprofloxacin, cefazolin and ceftriaxone antibacterial reagents. This study revealed that 20 (37%) P. aeruginosa isolates had integron genes. The antibiotic susceptibility test showed that 53 (98.1%) of the isolates were multidrug-resistant. 12 out of 54 isolated bacteria were resistant to all antibiotics tested. All bacteria were resistant to cefepime and the highest resistance rate was seen to ceftizoxime 92.6% followed by cefazolin 92.3%. The lowest resistance rate was observed to ciprofloxacin 38.9%, ofloxacin 44.4%, amikacin 46.3% and ticarcillin 48.1%. According to this study, P. aeruginosa isolates showed high level of antibiotic resistance and the presence of integrons in these strains can explain the influence of these genes in resistance creation. There was a significant association between resistance to cefotaxime, amikacin, ofloxacin, imipenem, ticarcillin, gentamicin and the presence of integrons.
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Affiliation(s)
| | | | - Zahra Molana
- Faculty of Para-Medicine; Babol University of Medical Sciences, Babol, Iran.
| | | | - Fariba Asgharpour
- Faculty of Para-Medicine; Babol University of Medical Sciences, Babol, Iran.
| | - Ali Mojtahedi
- Department of Microbiology Science and Research Branch Islamic Azad University, Guilan, Iran.
| | - Ramazan Rajabnia
- Infectious Diseases and Tropical Medicine Research Center, Babol University of Medical Sciences, Babol, Iran.,Corresponding author: Infectious Diseases and Tropical Medicine Research Center, Babol University of Medical Sciences, Babol, Iran.
E-mail:
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Mojtahedi A, Salehi R, Navabakbar F, Tamizifar H, Tavakkoli H, Duronio V. Evaluation of apoptosis induction using PARP cleavage on gastric adenocarcinoma and fibroblast cell lines by different strains of Helicobacter pylori. Pak J Biol Sci 2007; 10:4097-4102. [PMID: 19090286 DOI: 10.3923/pjbs.2007.4097.4102] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Helicobacter pylori is one of the most common pathogens affecting humans and is the major environmental factor in the development of gastric cancer increasing from 4 to 6 folds the risk of its development. Variations in cancer risk among H. pylori infected individuals may correlate to difference in H. pylori strains, variable host characteristics and specific interactions between host and microbial determinants. To determine the effect of different strains of H. pylori on cellular apoptosis this study was designed an in vitro model using AGS and HEF cell lines. After specified time intervals total cell proteins was extracted and subjected to SDS-PAGE and immunoblotting using anti poly ADP-ribose polymerase (PARP) antibody. Decrease in densitometric value of PARP was indicative of higher level of apoptosis. The ability of apoptosis induction in AGS and HEF cell lines by wild type (cagA+/vacA+), cagA-/vacA+, vacA-/cagA+ and double negative (cagA-/vacA-) strains were significantly different. The assessed apoptosis in AGS cell line co-cultured with wild type strain was 3.22 +/- 0.2 in 24 h, 2.8 +/- 0.1 in 48 and 2.1 +/- 0.09 in 72 h of incubation time. Similar assessment with cagA-/vacA+ strains in AGS cells was 4.17 +/- 1.49 in 24 h, 3.32 +/- 0.45 in 48 h and 2.32 +/- 0.61 in 72 h incubation. A variation in apoptotic potential between the H. pylori strains on two cells (AGS and HEF) was observed. Based on present results, it is concluded that H. pylori strains as well as target cell types are important in pathogenesis and induction of apoptosis during a specified time interval.
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Affiliation(s)
- Ali Mojtahedi
- Department of Medical Microbiology, Faculty of Medicine, Guilan University Complex, Rasht-Tehran Road, Rasht 3477, Iran
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Pourmand G, Nasseh H, Sarrafnejad A, Mojtahedi A, Mehrsai A, Hamidi Alamdari D, Nourijelyani K, Emamzadeh A. UP-02.87. Urology 2006. [DOI: 10.1016/j.urology.2006.08.831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Radfar M, Larijani B, Hadjibabaie M, Rajabipour B, Mojtahedi A, Abdollahi M. Effects of pentoxifylline on oxidative stress and levels of EGF and NO in blood of diabetic type-2 patients; a randomized, double-blind placebo-controlled clinical trial. Biomed Pharmacother 2005; 59:302-6. [PMID: 15932791 DOI: 10.1016/j.biopha.2005.05.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2005] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND As oxidative stress contributes to both progression and pathologic complications of diabetes and effective therapeutic strategies to prevent or delay the damage remain limited, the aim of the present study was to assess the efficacy of pentoxifylline in reducing of oxidative stress. Since there is a relationship between nitric oxide (NO), epidermal growth factor (EGF) and oxidative stress, we measured the effect of this drug on these parameters in comparison to placebo. METHODS Thirty-nine patients with type-2 diabetes mellitus were randomized in a double blind, placebo-controlled clinical trial to receive either pentoxifylline 400 mg four times a day or placebo for 14 days. Blood samples were obtained at baseline and at the end of the study. Samples were analyzed for thiobarbituric reactive substances (TBARS) as a marker of lipid peroxidation, ferric reducing ability (total antioxidant power, TAP), EGF and NO levels. RESULTS Pentoxifylline in comparison to placebo was effective (P < 0.05) in reduction of lipid peroxidation in plasma of the patients without significant effects on TAP, levels of EGF and NO in plasma. CONCLUSION Adding of pentoxifylline to drug regimen of diabetic type-2 patients can be helpful. Exact mechanism of action of pentoxifylline in reduction of blood lipid peroxidation remains to be elucidated.
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Affiliation(s)
- M Radfar
- Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, PO Box 14155-6451, Tehran, Iran
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