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Hajian H, Motallebi M, Akhavan Taheri M, Kheiripour N, Aghadavod E, Shahaboddin ME. The preventive effect of heat-killed Lactobacillus plantarum on male reproductive toxicity induced by cholestasis in rats. Food Chem Toxicol 2024:114571. [PMID: 38452966 DOI: 10.1016/j.fct.2024.114571] [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: 11/07/2023] [Revised: 02/23/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
This study investigated the preventive effect of heat-killed Lactobacillus plantarum (L. plantarum) on cholestasis-induced male reproductive toxicity in rats. Rats were divided into control normal, sham control, bile duct ligation (BDL) control, and BDL with heat-killed L. plantarum supplementation groups. The effects on sexual hormones, testicular and epididymal histology, sperm parameters, oxidative stress markers, and inflammatory gene expression were evaluated. Compared to the BDL control group, the BDL + heat-killed L. plantarum group showed higher levels of normal sperm, luteinizing hormone, testosterone, total antioxidant capacity, and catalase activity, indicating improved reproductive function. Conversely, markers of oxidative stress, such as total oxidative status, oxidative stress index, and carbonyl protein, were lower in the BDL + heat-killed L. plantarum group. The expression levels of inflammatory genes tumor necrosis factor-alpha and interleukin-6 were reduced, while interleukin-10 gene expression was increased in the BDL + heat-killed L. plantarum group. Histological evaluation confirmed the positive effects of heat-killed L. plantarum intervention on testicular parameters. In conclusion, heat-killed L. plantarum supplementation protects against cholestasis-induced male reproductive dysfunction in rats, as evidenced by improvements in hormonal balance, sperm quality, oxidative stress, and inflammation.
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Affiliation(s)
- Hajar Hajian
- Department of Clinical Biochemistry, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mitra Motallebi
- Department of Immunology and Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Maryam Akhavan Taheri
- Institute for Basic Sciences, Anatomical Sciences Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Nejat Kheiripour
- Institute for Basic Sciences, Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Esmat Aghadavod
- Department of Clinical Biochemistry, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Esmaeil Shahaboddin
- Department of Clinical Biochemistry, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Institute for Basic Sciences, Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
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Kabiri-Arani S, Motallebi M, Taheri MA, Kheiripour N, Ardjmand A, Aghadavod E, Shahaboddin ME. The Effect of Heat-Killed Lactobacillus plantarum on Oxidative Stress and Liver Damage in Rats with Bile Duct Ligation-Induced Hepatic Fibrosis. Probiotics Antimicrob Proteins 2024; 16:196-211. [PMID: 36522610 DOI: 10.1007/s12602-022-10033-7] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
This study is aimed at evaluating the effects of heat-killed Lactobacillus plantarum (L. plantarum) on cholestatic liver injury induced by bile duct ligation (BDL) in rats. Rats in the first group were healthy (normal control) and in the second group underwent abdominal incision (sham control). Rats in the third and fourth groups underwent common bile duct ligation and were treated with either oral distilled water (BDL control group) or heat-killed L. plantarum (BDL + L. plantarum) for 28 days. Finally, rats were sacrificed, blood samples were analyzed through biochemical methods, liver and ileum tissue tissues were histologically assessed, and the expression of the αSMA, TNF-α, IL-6, and IL-10 genes in the liver and ZO-1 gene in ileum tissues were assessed through real-time PCR. The levels of bilirubin, liver function enzymes, NO, MDA, and carbonyl protein in the BDL + L. plantarum group were significantly lower than in the BDL control group (P ≤ 0.05). SOD and CAT activity in BDL + L. plantarum group was significantly greater than the BDL control group 1.4 and 3.0 times, respectively (P ≤ 0.001). Moreover, in the BDL + L. plantarum group, the expression of the α-SMA, TNF-α, and IL-6 genes was significantly lower (3.1, 2.9, and 2.5 times), and IL-10 and ZO-1 genes were significantly greater than the BDL control group by 2.1 and 3.6 times, respectively (P ≤ 0.05). The histological assessment also confirmed the greater effectiveness of heat-killed L. plantarum in improving the morphology and parenchymal structure of the liver. Taken together, our results suggest that heat-killed L. plantarum strains are potential therapeutic agents for hepatic fibrosis.
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Affiliation(s)
- Shima Kabiri-Arani
- Department of Clinical Biochemistry, Faculty of Medicine, Kashan University of Medical Sciences, Pezeshk Blvd, Qotbe Ravandi Blvd, Kashan, Iran
| | - Mitra Motallebi
- Department of Immunology and Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Maryam Akhavan Taheri
- Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Nejat Kheiripour
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Abolfazl Ardjmand
- Physiology Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Esmat Aghadavod
- Department of Clinical Biochemistry, Faculty of Medicine, Kashan University of Medical Sciences, Pezeshk Blvd, Qotbe Ravandi Blvd, Kashan, Iran
| | - Mohammad Esmaeil Shahaboddin
- Department of Clinical Biochemistry, Faculty of Medicine, Kashan University of Medical Sciences, Pezeshk Blvd, Qotbe Ravandi Blvd, Kashan, Iran.
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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Mohammadi M, Saffari M, Siadat SD, Hejazi SH, Shayestehpour M, Motallebi M, Eidi M. Isolation, characterization, therapeutic potency, and genomic analysis of a novel bacteriophage vB_KshKPC-M against carbapenemase-producing Klebsiella pneumoniae strains (CRKP) isolated from Ventilator-associated pneumoniae (VAP) infection of COVID-19 patients. Ann Clin Microbiol Antimicrob 2023; 22:18. [PMID: 36829156 PMCID: PMC9955523 DOI: 10.1186/s12941-023-00567-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 02/15/2023] [Indexed: 02/26/2023] Open
Abstract
BACKGROUND Carbapenem-resistant Klebsiella pneumoniae (CRKP) is a significant clinical problem, given the lack of therapeutic options. The CRKP strains have emerged as an essential worldwide healthcare issue during the last 10 years. Global expansion of the CRKP has made it a significant public health hazard. We must consider to novel therapeutic techniques. Bacteriophages are potent restorative cases against infections with multiple drug-resistant bacteria. The Phages offer promising prospects for the treatment of CRKP infections. OBJECTIVE In this study, a novel K. pneumoniae phage vB_KshKPC-M was isolated, characterized, and sequenced, which was able to infect and lyse Carbapenem-resistant K. pneumoniae host specifically. METHODS One hundred clinical isolates of K. pneumoniae were collected from patients with COVID-19 associated with ventilator-associated acute pneumonia hospitalized at Shahid Beheshti Hospital, Kashan, Iran, from 2020 to 2021. Initially, all samples were cultured, and bacterial isolates identified by conventional biochemical tests, and then the ureD gene was used by PCR to confirm the isolates. The Antibiotic susceptibility test in the disc diffusion method and Minimum inhibitory concentrations for Colistin was done and interpreted according to guidelines. Phenotypic and molecular methods determined the Carbapenem resistance of isolates. The blaKPC, blaNDM, and blaOXA-23 genes were amplified for this detection. Biofilm determination of CRKP isolates was performed using a quantitative microtiter plate (MTP) method. The phage was isolated from wastewater during the summer season at a specific position from Beheshti Hospital (Kashan, Iran). The sample was processed and purified against the bacterial host, a CRKP strain isolated from a patient suffering from COVID-19 pneumoniae and resistance to Colistin with high potency for biofilm production. This isolate is called Kp100. The separated phages were diluted and titration by the double overlay agar plaque assay. The separate Phage is concentrated with 10% PEG and stored at -80 °C until use. The phage host range was identified by the spot test method. The purified phage morphology was determined using a transmission electron microscope. The phage stability tests (pH and temperature) were analyzed. The effect of cationic ions on phage adsorption was evaluated. The optimal titer of bacteriophage was determined to reduce the concentration of the CRKP strain. One-step growth assays were performed to identify the purified phage burst's latent cycle and size. The SDS-PAGE was used for phage proteins analysis. Phage DNA was extracted by chloroform technique, and the whole genome of lytic phage was sequenced using Illumina HiSeq technology (Illumina, San Diego, CA). For quality assurance and preprocessing, such as trimming, Geneious Prime 2021.2.2 and Spades 3.9.0. The whole genome sequence of the lytic phage is linked to the GenBank database accession number. RASTtk-v1.073 was used to predict and annotate the ORFs. Prediction of ORF was performed using PHASTER software. ResFinder is used to assess the presence of antimicrobial resistance and virulence genes in the genome. The tRNAs can-SE v2.0.6 is used to determine the presence of tRNA in the genome. Linear genome comparisons of phages and visualization of coding regions were performed using Easyfig 2.2.3 and Mauve 2.4.0. Phage lifestyles were predicted using the program PHACTS. Phylogenetic analysis and amino acid sequences of phage core proteins, such as the major capsid protein. Phylogenies were reconstructed using the Neighbor-Joining method with 1000 bootstrap repeat. HHpred software was used to predict depolymerase. In this study, GraphPad Prism version 9.1 was used for the statistical analysis. Student's t-test was used to compare the sets and the control sets, and the significance level was set at P ≤ 0.05. RESULTS Phage vB_KshKPC-M is assigned to the Siphoviridae, order Caudovirales. It was identified as a linear double-stranded DNA phage of 54,378 bp with 50.08% G + C content, had a relatively broad host range (97.7%), a short latency of 20 min, and a high burst size of 260 PFU/cell, and was maintained stable at different pH (3-11) and temperature (45-65 °C). The vB_KshKPC-M genome contains 91 open-reading frames. No tRNA, antibiotic resistance, toxin, virulence-related genes, or lysogen-forming gene clusters were detected in the phage genome. Comparative genomic analysis revealed that phage vB_KshKPC-M has sequence similarity to the Klebsiella phages, phage 13 (NC_049844.1), phage Sushi (NC_028774.1), phage vB_KpnD_PeteCarol (OL539448.1) and phage PWKp14 (MZ634345.1). CONCLUSION The broad host range and antibacterial activity make it a promising candidate for future phage therapy applications. The isolated phage was able to lyse most of the antibiotic-resistant clinical isolates. Therefore, this phage can be used alone or as a phage mixture in future studies to control and inhibit respiratory infections caused by these bacteria, especially in treating respiratory infections caused by resistant strains in sick patients.
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Affiliation(s)
- Mehrdad Mohammadi
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Pezeshk Blvd, Qotbe Ravandi Blvd, Kashan, 8715973449, Iran.
| | - Mahmood Saffari
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Pezeshk Blvd, Qotbe Ravandi Blvd, Kashan, 8715973449, Iran.
| | - Seyed Davar Siadat
- grid.420169.80000 0000 9562 2611Tuberculosis and Pulmonary Research Department, Pasteur Institute of Iran, Tehran, Iran ,grid.420169.80000 0000 9562 2611Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
| | - Seyed Hossein Hejazi
- grid.411036.10000 0001 1498 685XDepartment of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Shayestehpour
- grid.444768.d0000 0004 0612 1049Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Pezeshk Blvd, Qotbe Ravandi Blvd, Kashan, 8715973449 Iran
| | - Mitra Motallebi
- grid.444768.d0000 0004 0612 1049Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Pezeshk Blvd, Qotbe Ravandi Blvd, Kashan, 8715973449 Iran
| | - Milad Eidi
- grid.412266.50000 0001 1781 3962Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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Mohammadi M, Mirzaei H, Motallebi M. The role of anaerobic bacteria in the development and prevention of colorectal cancer: A review study. Anaerobe 2021; 73:102501. [PMID: 34906686 DOI: 10.1016/j.anaerobe.2021.102501] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 10/01/2021] [Revised: 11/15/2021] [Accepted: 12/07/2021] [Indexed: 02/07/2023]
Abstract
Colorectal cancer (CRC) is the third most frequently diagnosed cancer in both males and females in the Unites States. Colonoscopy is considered a safe method for screening this disorder; however, it can be challenging for patients. As research on microbiota, especially anaerobic microbiota, has expanded substantially, new links have been determined between anaerobic bacteria and CRC progression. These associations can be useful in screening CRC in the near future. This review discusses current research investigating the presence of anaerobic bacteria, including Bacteroides fragilis, Peptostreptococcus anaerobius, Clostridium septicum, Porphyromonas gingivalis, Fusobacterium nucleatum, and Parvimonas micra in CRC and presents an overview about their mechanisms of action. We also discuss the current anaerobic probiotics used for the treatment and prevention of CRC.
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Affiliation(s)
- Mehrdad Mohammadi
- Department of Immunology and Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Mitra Motallebi
- Department of Immunology and Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Infectious Diseases Research Center, Kashan University of Medical Sciences, Kashan, Iran.
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Motallebi M, Alibolandi Z, Aghmiyuni ZF, van Leeuwen WB, Sharif MR, Moniri R. Molecular analysis and the toxin, MSCRAMM, and biofilm genes of methicillin-resistant Staphylococcus aureus strains isolated from pemphigus wounds: A study based on SCCmec and dru typing. Infect Genet Evol 2020; 87:104644. [PMID: 33246081 DOI: 10.1016/j.meegid.2020.104644] [Citation(s) in RCA: 2] [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: 08/04/2020] [Revised: 10/30/2020] [Accepted: 11/23/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Pemphigus is a chronic autoimmune blistering disease. Pemphigus blisters can damage the natural skin barrier and increase the risk of life-threatening conditions. Colonization of pemphigus wounds with methicillin-resistant Staphylococcus aureus (MRSA) prolongs wound healing and increases mortality rate. Assessing MRSA prevalence, types, and toxin and adhesion genes can facilitate the detection of MRSA strains which cause infections, selection of appropriate treatments, and healing of pemphigus wounds. This study aimed to determine the SCCmec, the direct repeat unit (dru) types (dts), and the toxin, MSCRAMM, and biofilm genes of MRSA strains isolated from pemphigus wounds. METHODS In this cross-sectional study, 118 S. aureus isolates were gathered from 118 patients with pemphigus. MRSA detection was performed using the mecA gene. Using the polymerase chain reaction method, all MRSA isolates were assessed for the presence of the sea, seb, sec, tst, eta, pvl, hla, hlb, MSCRAMM, and ica genes. Typing and subtyping were performed through respectively SCCmec typing and dru typing methods. The Bionumerics software was used for analyzing the data and drawing the minimum spanning tree. FINDINGS From 118 S. aureus isolates, 51 were MRSA. SCCmec typing revealed the prevalence of SCCmec II with a prevalence of 64.7% (33 out of 51 isolates) and SCCmec III with a prevalence of 35.3% (18 out of 51 isolates). Dru typing indicated seven dts, namely dts 10a, 10g, 10m, 13i, 8h, 8i, and 9ca in two main clusters. The dt9ca was a new dru type and was registered in the dru-typing database (www.dru-typing.org). The prevalence rates of the hla, sea, and sec genes in MRSA isolates were respectively 54.9%, 27.4%, and 1.9%, while the hlb, seb, eta, and pvl genes were not detected at all. Only one MRSA with SCCmec III and dt10a carried the tst encoding gene. MSCRAMM gene analysis revealed the high prevalence of the eno (31.3%) and the fib (21.5%) genes. The prevalence rates of the icaA and icaD biofilm formation genes were 3.9% and 5.8%, respectively. There were no significant differences between the two detected SCCmec types and between the two detected dts clusters respecting the prevalence of the encoding genes of virulence factors and MSCRAMMs. CONCLUSION The toxin genes hla and sea are prevalent among MRSA strains with SCCmec II and III isolated from pemphigus wounds. The most prevalent dts are dt10a and dt10g among MRSA with SCCmec III and dt8h and dt8i among MRSA with SCCmec II.
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Affiliation(s)
- Mitra Motallebi
- Department of Immunology and Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Infectious Diseases Research Center, Kashan University of Medical Sciences, Kashan, Iran.
| | - Zahra Alibolandi
- Anatomical Sciences Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Zeinab Fagheei Aghmiyuni
- Institute of Immunology and Infection Diseases, Antimicrobial Resistance Research Centre, Rasoul-e-Akram Hospital, Iran University of Medical Sciences, Tehran, IR, Iran
| | - Willem B van Leeuwen
- Leiden Center for Applied Bioscience, University of Applied Sciences Leiden, Leiden, Netherlands
| | - Mohammad Reza Sharif
- Infectious Diseases Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Rezvan Moniri
- Department of Immunology and Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
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Motallebi M, Jabalameli F, Beigverdi R, Emaneini M. High prevalence of direct repeat unit types of 10di, 8 h and 8i among methicillin resistant Staphylococcus aureus strains with staphylococcal cassette chromosome mec type IIIA isolated in Tehran, Iran. Antimicrob Resist Infect Control 2019; 8:50. [PMID: 30886703 PMCID: PMC6404295 DOI: 10.1186/s13756-019-0501-y] [Citation(s) in RCA: 5] [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: 08/06/2018] [Accepted: 02/24/2019] [Indexed: 01/21/2023] Open
Abstract
Background The emergence of methicillin-resistant Staphylococcus aureus (MRSA) is a main concern in burn care centers worldwide. The some reports of MRSA in Iran suggested that MRSA with type SCCmec III is common among burn patients. The aim of this study was to determine the prevalence, virulence genes, and antimicrobial susceptibility of the direct repeat units (dru) types of MRSA with SCCmec IIIA isolated from burn wounds in a burn care center in Tehran, Iran. Methods In total, 165 S. aureus isolates were collected from clinical samples. In order to detect MRSA isolates, the mecA gene was amplified through the polymerase chain reaction (PCR) method. Antimicrobial susceptibility was tested using the disc agar diffusion test. Moreover, the PCR method was applied to determine SCCmec types, virulence genes, and antimicrobial resistance genes. The dru region was sequenced and thereby, dru types and dru repeats were identified. A similarity matrix was used to create minimum spanning tree (MST). Results The prevalence of MRSA was 69% (114 out of 165 isolates). Most of MRSA isolates (61 out of 114, 53.5%) were SCCmec type IIIA. All MRSA isolates were vancomycin-susceptible and more than 68% of MRSA isolates with SCCmec type IIIA were mupirocin resistant. The successful dru typing of isolates with SCCmec type IIIA revealed fourteen different dru types. There were two new dru types, namely dt10di and dt7aj. MST analysis indicated the presence of the three clusters of dt10di (cluster I), dt8i-dt8 h (cluster II), and dt11c-dt10ao-dt11dd-dt11a-dt10a (cluster III). There were significant differences between clusters I and II respecting antimicrobial resistance pattern and virulence genes. Conclusion Three main dru clusters are prevalent in the study setting. The main dru types in the setting are dt10di, dt8i, and dt8 h. Dru typing can be used to differentiate MRSA strains with SCCmec IIIA.
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Affiliation(s)
- Mitra Motallebi
- 1Infectious Diseases Research Center, Kashan University of Medical Sciences, Kashan, Iran.,2Department of Immunology and Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Fereshteh Jabalameli
- 3Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Building No. 7, 100 Poursina St., Keshavarz Blvd., Tehran, 14167-53955 Iran
| | - Reza Beigverdi
- 3Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Building No. 7, 100 Poursina St., Keshavarz Blvd., Tehran, 14167-53955 Iran
| | - Mohammad Emaneini
- 3Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Building No. 7, 100 Poursina St., Keshavarz Blvd., Tehran, 14167-53955 Iran
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Hosseini SS, Niakan M, Saderi H, Motallebi M, Taherikalani M, Asadollahi K, Emaneini M. Frequency of genes encoding erythromycin ribosomal methylases among Staphylococcus aureus clinical isolates with different D-phenotypes in Tehran, Iran. Iran J Microbiol 2016; 8:161-167. [PMID: 27928482 PMCID: PMC5139918] [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] [Indexed: 11/12/2022]
Abstract
BACKGROUND AND OBJECTIVES Macrolide, lincosamide and streptogramin type B (MLSB) antibiotics are important in the treatment of Staphylococcus aureus infections and existence of isolates with ability to resist against MLSB antibiotics is worrisome. MATERIALS AND METHODS In this cross sectional study, 101 S. aureus isolates were collected from patients of five selected hospitals in Tehran over a period of five months. Disk diffusion tests and differentiation between constitutive and inducible resistances were carried out by D-test. The presence of mecA, msrA, ermA and ermC genes were detected using PCR or multiplex PCR. RESULTS Out of 101 S. aureus isolates, 58 (57.4%) were methicillin resistant and 57 (56.4%) expressed resistance to erythromycin. The prevalence of constitutive MLSB (cMLSB), inducible MLSB (iMLSB) and MS (Negative) phenotype in all erythromycin resistant isolates were 71.9, 26.3 and 1.7%, respectively. Out of all the erythromycin resistant isolates, 57.8% harbored both ermA and ermC genes which possessed constitutive resistance. 8.7% of the isolates contained ermA gene alone which possessed inducible resistance with D phenotype and 5.2% of isolates just contained ermC gene which had inducible resistance with D+ phenotype. msrA gene was detected in 3.5% of the erythromycin resistant S. aureus isolates with constitutive resistance. None of the genes were detected among MS phenotypes. CONCLUSION In this study, most of S. aureus isolates carried both ermA and ermC genes and there was a significant relationship (P value ≤ 0.05) between different resistance phenotypes and erm genes.
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Affiliation(s)
| | - Mohammad Niakan
- Department of Microbiology, School of Medicine, Shahed University, Tehran, Iran
| | - Horieh Saderi
- Molecular Microbiology Research Center, School of Medicine, Shahed University, Tehran, Iran
| | - Mitra Motallebi
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Morovat Taherikalani
- Razi Herbal Medicines Research Center & Department of Microbiology, School of Medicine, Lorestan University of Medical Sciences, Ilam, Iran
| | - Khairollah Asadollahi
- Department of Social Medicine, School of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Mohammad Emaneini
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran, Corresponding author: Mohammad Emaneini, Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, No. 100, Poursina St., Keshavarz Blvd., Tehran, Iran., Tel- Fax: +98 21 88955810,
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Motallebi M, Jabalameli F, Asadollahi K, Taherikalani M, Emaneini M. Spreading of genes encoding enterotoxins, haemolysins, adhesin and biofilm among methicillin resistant Staphylococcus aureus strains with staphylococcal cassette chromosome mec type IIIA isolated from burn patients. Microb Pathog 2016; 97:34-7. [PMID: 27238459 DOI: 10.1016/j.micpath.2016.05.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 04/06/2016] [Revised: 05/18/2016] [Accepted: 05/25/2016] [Indexed: 11/29/2022]
Abstract
The emergence of antibiotic-resistant Staphylococcus aureus in particular methicillin-resistant S. aureus (MRSA) is an important concern in burn medical centers either in Iran or worldwide. A total of 128 S. aureus isolates were collected from wound infection of burn patients during June 2013 to June 2014. Multiplex-polymerase chain reaction (MPCR) assay was performed for the characterization of the staphylococcal cassette chromosome mec (SCCmec). Genes encoding virulence factors and biofilm were targeted by PCR. Of 128 S. aureus isolates, 77 (60.1%) isolates were MRSA. Fifty four (70.1%) isolates were identified as SCCmec type IIIA. The most frequently detected toxin genes among MRSA isolates with SCCmec type IIIA were sea (64.1%) and hla (51.8%). The rate of coexistence of sea with hla and sea with hla and hlb was 37% and12.9%, respectively. The sec, eta, tst, pvl, hla and hlb genes were not detected in any of the MRSA isolates. The most prevalent genes encoding biofilm was eno, found in 61.1% of isolates, followed by fib and icaA found in 48.1% and 38.8% of the isolates, respectively. The rate of coexistence of fib + eno + icaA + icaD and fib + eno was 20.3% and 9.2%, respectively. The ebps gene was not detected in any of the isolates. In conclusion, our study indicated that the sea, hla, fib and icaA were most frequent genes encoding virulence factors among MRSA with SCCmec type IIIA isolated from burn wound infection. Moreover, the results of this study shows that the rate of coexistence of genes encoding different virulence factor were high.
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Affiliation(s)
- Mitra Motallebi
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fereshteh Jabalameli
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Kheirollah Asadollahi
- Department of Social Medicine, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Morovat Taherikalani
- Department of Microbiology, School of Medicine, Lorestan University of Medical Sciences, Khoramabad, Iran
| | - Mohammad Emaneini
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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Jamshidi J, Movafagh A, Emamalizadeh B, Zare Bidoki A, Manafi A, Ghasemi Firouzabadi S, Shahidi GA, Kazeminasab S, Petramfar P, Fazeli A, Motallebi M, Mortazavi-Tabatabaei SA, Kowsari A, Jafarian Z, Darvish H. HLA-DRAis associated with Parkinson's disease in Iranian population. Int J Immunogenet 2014; 41:508-11. [DOI: 10.1111/iji.12151] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 08/10/2014] [Accepted: 09/07/2014] [Indexed: 01/12/2023]
Affiliation(s)
- J. Jamshidi
- Department of Biochemistry; Fasa University of Medical Sciences; Fasa Iran
| | - A. Movafagh
- Department of Medical Genetics; Shahid Beheshti University of Medical Sciences; Tehran Iran
- Department of Medical Genetics; Pediatric Neurology Research Center; School of Medicine; Shahid Beheshti University of Medical Sciences; Tehran Iran
| | - B. Emamalizadeh
- Department of Medical Genetics; Shahid Beheshti University of Medical Sciences; Tehran Iran
| | - A. Zare Bidoki
- Molecular Immunology Research Center; Children's Medical Center Hospital; Tehran University of Medical Sciences; Tehran Iran
- Department of Immunology; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - A. Manafi
- Student Research Committee; Fasa University of Medical Sciences; Fasa Iran
| | - S. Ghasemi Firouzabadi
- Genetics Research Center; University of Social Welfare and Rehabilitation Sciences; Tehran Iran
| | - G.-A. Shahidi
- Movement Disorders Clinic; Hazrat Rassol Hospital; Iran University of Medical Sciences; Tehran Iran
| | - S. Kazeminasab
- Genetics Research Center; University of Social Welfare and Rehabilitation Sciences; Tehran Iran
| | - P. Petramfar
- Department of Neurology; Shiraz University of Medical Sciences; Shiraz Iran
| | - A. Fazeli
- Department of Medical Genetics; Shahid Beheshti University of Medical Sciences; Tehran Iran
| | - M. Motallebi
- Department of Medical Genetics; Shahid Beheshti University of Medical Sciences; Tehran Iran
| | | | - A. Kowsari
- Stem cell Research Center; Golestan University of Medical Science; Gorgan Iran
| | - Z. Jafarian
- Genetics Research Center; University of Social Welfare and Rehabilitation Sciences; Tehran Iran
| | - H. Darvish
- Department of Medical Genetics; Shahid Beheshti University of Medical Sciences; Tehran Iran
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Motallebi M, Piroozm, Ahmad, Rohani M, Akbari H, Khorshidi A. Multiple drug resistance of enteropathogenic Escherichia coli isolated from children with diarrhea in Kashan, Iran. ACTA ACUST UNITED AC 2011. [DOI: 10.5897/ajmr11.483] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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11
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Motallebi M, Khorshidi A, Piroozmand A, Rohani M, Akbari H. Survey of virulence factors of Enteropathogenic Escherichia coli (EPEC) isolated from less than 5years old children with diarrheal by PCR. Clin Biochem 2011. [DOI: 10.1016/j.clinbiochem.2011.08.988] [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: 11/27/2022]
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12
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Shojaei M, Motallebi M, Gaeeni A. Relation between the concentration of salivary testosterone and cortisol, performance, competitive motivation with overtraining of elite wrestlers. J Sci Med Sport 2010. [DOI: 10.1016/j.jsams.2009.10.263] [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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13
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14
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Matroudi S, Zamani MR, Motallebi M. Molecular cloning of chitinase 33 (chit33) gene from Trichoderma atroviride. Braz J Microbiol 2008; 39:433-7. [PMID: 24031242 PMCID: PMC3768419 DOI: 10.1590/s1517-83822008000300005] [Citation(s) in RCA: 16] [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: 07/17/2007] [Revised: 11/22/2007] [Accepted: 07/06/2008] [Indexed: 11/22/2022] Open
Abstract
In this study Trichoderma atroviride was selected as over producer of chitinase enzyme among 30 different isolates of Trichoderma sp. on the basis of chitinase specific activity. From this isolate the genomic and cDNA clones encoding chit33 have been isolated and sequenced. Comparison of genomic and cDNA sequences for defining gene structure indicates that this gene contains three short introns and also an open reading frame coding for a protein of 321 amino acids. The deduced amino acid sequence includes a 19 aa putative signal peptide. Homology between this sequence and other reported Trichoderma Chit33 proteins are discussed. The coding sequence of chit33 gene was cloned in pEt26b(+) expression vector and expressed in E. coli.
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Affiliation(s)
- S Matroudi
- National Institute for Genetic Engineering and Biotechnology (NIGEB) , Tehran, I.R. , Iran
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15
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Badri M, Zamani MR, Motallebi M. Effect of plant growth regulators on in vitro biological control of Fusarium oxysporum by Trichoderma harzianum (T8). Pak J Biol Sci 2007; 10:2850-5. [PMID: 19090187 DOI: 10.3923/pjbs.2007.2850.2855] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this study the effect of two plant growth regulators (indolacetic acid, IAA and gibberellic acid, GA3) and also Trichoderma harzianum (T8) on the phytopathogen fungus Fusarium oxysporium (F15) was investigated. IAA and GA3 with 15 and 30 ppm concentration have no significant effect on T. harzianum (T8) growth. The biocontrol activity of T. harzianum on F. oxysporum was slightly decreased by the presence of IAA and/or GA3. Addition of 40 ppm of GA3 to the culture medium of F. oxsporum increased polygalacturonase activity about 100%. A strong increasing effect on chitinase activity (60%) by T. harzianum (T8) was observed in the presence of phytopathogenic fungus F. oxysporum, but 40 ppm IAA and/or GA3 decreased about 47% of chitinase activity of T. harzianum.
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Affiliation(s)
- M Badri
- National Institute for Genetic Engineering and Biotechnology (NIGEB), Tehran, Islamic Republic of Iran
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16
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Motallebi M. Serological and biochemical characteristics of virulence plasmid of Yersinia enterocolitica isolates from chicken in the Islamic Republic of Iran. East Mediterr Health J 2000. [DOI: 10.26719/2000.6.2-3.409] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Pathogenic Yersinia enterocolitica harbour plasmid that is essential for virulence. We studied the characteristics of virulence plasmid using serological, biochemical and bioassay tests in Y. enterocolitica isolates of chicken using plasmid curing. Plasmid-cured isogenic derivatives [2029c and 2150c] were obtained from two isolates of Y. enterocolitica [RTCC 2029 and RTCC 2150]. The results demonstrated that plasmid-bearing isolates [2029 and 2150] were human-serum-resistant when grown at 37°C, but were sensitive when grown at 25°C, whereas plasmid-cured isolates [2029c and 2150c] were sensitive when grown at both temperatures. Also autoagglutination, calcium-dependency tests and experimental infection in mice demonstrated that these phenotypes were associated with the virulence plasmid
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Motallebi M, Zamani MR, Saffar B. Serological and biochemical characteristics of virulence plasmid of Yersinia enterocolitica isolates from chicken in the Islamic Republic of Iran. East Mediterr Health J 2000; 6:409-15. [PMID: 11556031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Pathogenic Yersinia enterocolitica harbour plasmid that is essential for virulence. We studied the characteristics of virulence plasmid using serological, biochemical and bioassay tests in Y. enterocolitica isolates of chicken using plasmid curing. Plasmid-cured isogenic derivatives (2029c and 2150c) were obtained from two isolates of Y. enterocolitica (RTCC 2029 and RTCC 2150). The results demonstrated that plasmid-bearing isolates (2029 and 2150) were human-serum-resistant when grown at 37 degrees C, but were sensitive when grown at 25 degrees C, whereas plasmid-cured isolates (2029c and 2150c) were sensitive when grown at both temperatures. Also autoagglutination, calcium-dependency tests and experimental infection in mice demonstrated that these phenotypes were associated with the virulence plasmid.
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Affiliation(s)
- M Motallebi
- Department of Biology, Faculty of Science, University of Razi, Kermanshah, Islamic Republic of Iran
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