1
|
Shokrpoor S, Darabian Aghdas R, Ziafati Kafi Z, Abdollahi M, Ashrafi Tamai I. Lumpy jaw caused by Nocardia farcinica in a Holstein cow. Vet Med Sci 2024; 10:e1433. [PMID: 38520249 PMCID: PMC10981914 DOI: 10.1002/vms3.1433] [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: 11/21/2023] [Revised: 03/03/2024] [Accepted: 03/10/2024] [Indexed: 03/25/2024] Open
Abstract
A 3-year-old Holstein cow was examined in an intensive system due to unilateral swelling in the mandible. A right mandibular mass was associated with painful mastication and Ptyalism. In palpation, the mass was raised, ulcerated, attached to the mandible bone and firm, approximately 17 × 12 × 10 cm3 in size. The lesion was sampled, and after routine bacteriology and histopathology procedures, the occurrence of lumpy jaw caused by Nocardia farcinica was confirmed. The bacterium was analysed using genome sequencing and new strain called Najm 114. Due to the risk of zoonosis of the isolated agent, the cow was euthanized. This is the first report of lumpy jaw caused by N. farcinica in a cow. This study showed that N. farcinica should be considered a possible etiological agent for lumpy jaw in cattle.
Collapse
Affiliation(s)
- Sara Shokrpoor
- Department of Pathology, Faculty of Veterinary MedicineUniversity of TehranTehranIran
| | | | - Zahra Ziafati Kafi
- Department of Microbiology and Immunology, Faculty of Veterinary MedicineUniversity of TehranTehranIran
| | - Mostafa Abdollahi
- Department of Clinical Sciences, Faculty of Veterinary MedicineSemnan UniversitySemnanIran
| | - Iradj Ashrafi Tamai
- Department of Microbiology and Immunology, Faculty of Veterinary MedicineUniversity of TehranTehranIran
| |
Collapse
|
2
|
Shirzad H, Panji M, Nezhad SAM, Houshmand P, Tamai IA. One-pot rapid visual detection of E. coli O157:H7 by label-free AuNP-based plasmonic-aptasensor in water sample. J Microbiol Methods 2024; 217-218:106858. [PMID: 38040292 DOI: 10.1016/j.mimet.2023.106858] [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: 07/20/2023] [Revised: 11/04/2023] [Accepted: 11/07/2023] [Indexed: 12/03/2023]
Abstract
Access to clean water for irrigation and drinking has long been a global concern. The need for fast, precise, and cost-effective methods to detect harmful bacteria like Enterohemorrhagic Escherichia coli (EHEC) serotype O157:H7 is high due to the potential for severe infectious diseases. Fortunately, recent research has led to developing and utilizing rapid bacterial detection methods. The creation of an aptamer-based biosensor (aptasensor) for the detection of E. coli O157:H7 using label-free aptamers and gold nanoparticles (AuNPs) is described in this study. The specific aptamers that can detect target bacteria are adsorbed on the surface of unmodified AuNPs to form the aptasensor. The detection is performed by target bacterium-induced aptasensor aggregation, which is associated with a red-to-purple color change under high-salt circumstances. We devised a quick and easy method for detecting bacteria using an anti-E. coli O157:H7 aptamer without the need for specialized equipment or pretreatment processes like cell lysis. The aptasensor could identify target bacteria with only as few as 250 colony-forming units (CFU)/ml in 15 min or less, and its specificity based on our test was 100%. This method not only provides a fast direct preparation process but also exhibits remarkable proficiency in promptly identifying the intended target with a heightened level of sensitivity and specificity. Therefore, it can serve as an intelligent tool for monitoring water reservoirs and preventing the transmission of infectious diseases associated with EHEC.
Collapse
Affiliation(s)
- Hadi Shirzad
- Research Center for Life & Health Sciences & Biotechnology of the Police, Directorate of Health, Rescue & Treatment, Police Headquarter, Tehran, Iran
| | - Mohammad Panji
- Research Center for Life & Health Sciences & Biotechnology of the Police, Directorate of Health, Rescue & Treatment, Police Headquarter, Tehran, Iran
| | - Seyed Amin Mousavi Nezhad
- Research Center for Life & Health Sciences & Biotechnology of the Police, Directorate of Health, Rescue & Treatment, Police Headquarter, Tehran, Iran
| | - Pouya Houshmand
- Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | | |
Collapse
|
3
|
Dehghan Rahimabadi P, Abbasi J, Shaghayegh A, Taefi Nasrabadi N, Golchin D, Kavakebi Asar Y, Ashrafi Tamai I, Anoushepour A. A rare case of Cysticercus tenuicollis infection in a neonate lamb: Evidence of prenatal transmission. Vet Med Sci 2024; 10:e1341. [PMID: 38117665 PMCID: PMC10766016 DOI: 10.1002/vms3.1341] [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: 08/30/2023] [Revised: 10/31/2023] [Accepted: 12/03/2023] [Indexed: 12/22/2023] Open
Abstract
Cysticercosis develops in lambs following a Cysticercus tenuicollis infestation, which is the larval stage of Taenia hydatigena. A 7-day-old lamb was examined for depression, anorexia, fever (40.5°C), congested mucus membranes, reluctance to move, and a hunched back. Upon necropsy, congestion was noted in the intestines and brain, and the heart had a loose consistency. Soft and pulpy kidneys were evident coupled with watery intestinal contents. Epsilon toxin (Clostridium perfringens type D toxin) was detected using enzyme-linked immunosorbent assay. A transparent cystic structure was incidentally found attached to the pancreas, within which a scolex was well demonstrated upon histopathology. Chronic active peritonitis was diagnosed at the cyst attachment site. C. tenuicollis was confirmed by polymerase chain reaction and genome sequencing. This report describes prenatal transmission of C. tenuicollis in the present lamb, although this condition is quite rare.
Collapse
Affiliation(s)
| | - Javad Abbasi
- Department of Animal and Poultry Health and NutritionFaculty of Veterinary MedicineUniversity of TehranTehranIran
- Institute of Biomedical ResearchUniversity of TehranTehranIran
| | - Alireza Shaghayegh
- Department of Clinical SciencesKaraj BranchIslamic Azad UniversityKarajIran
| | | | - Diba Golchin
- Department of PathobiologyFaculty of Veterinary MedicineUniversity of TehranTehranIran
| | | | - Iradj Ashrafi Tamai
- Department of Microbiology and ImmunologyFaculty of Veterinary MedicineUniversity of TehranTehranIran
| | - Amin Anoushepour
- Department of Clinical SciencesKaraj BranchIslamic Azad UniversityKarajIran
| |
Collapse
|
4
|
Rahmati-Holasoo H, Marandi A, Shokrpoor S, Goodarzi T, Ziafati Kafi Z, Ashrafi Tamai I, Ebrahimzadeh Mousavi H. Clinico-histopathological and phylogenetic analysis of protozoan epibiont Epistylis wuhanensis associated with crustacean parasite Lernaea cyprinacea from ornamental fish in Iran. Sci Rep 2023; 13:14065. [PMID: 37640893 PMCID: PMC10462625 DOI: 10.1038/s41598-023-41368-y] [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: 04/20/2023] [Accepted: 08/25/2023] [Indexed: 08/31/2023] Open
Abstract
Parasitic infestations are one of the most concerning problems limiting ornamental fish farming. In addition to the direct economic losses due to the major mortalities, parasites may significantly negatively impact the body shape, coloration, growth rate, and health condition of the fish. The results of the study highlight the importance of comprehensive parasitological analysis in the diagnosis and treatment of parasitic infections in ornamental fish farms. The presence of multiple parasites in the affected fish emphasizes the need for effective biosecurity measures, such as extending the quarantine period for newly imported fish, closely monitoring fish populations, and implementing isolation units to prevent the spread of infections. By implementing these preventative measures, ornamental fish farmers can reduce the risk of parasitic infections and ensure the health and well-being of their fish populations. This, in turn, can lead to increased profitability and sustainability for their business. Overall, the current study aimed to conduct a clinical, histopathological, and phylogenetic analysis of the epibiont ciliated protozoan Epistylis wuhanensis and the copepod crustacean Lernaea cyprinacea in a freshwater ornamental fish farm in Iran. Furthermore, it provides valuable insights into the prevalence and impact of parasitic infections in ornamental fish farms and underscores the need for continued research and the development of effective preventative measures to address this issue. A total of 60 symptomatic freshwater ornamental fish, including 30 guppy (Poecilia reticulata) and 30 sailfin molly (Poecilia latipinna), were packed in polyethylene bags filled with oxygenated pond water and transported to the Ornamental Fish Clinic, Faculty of Veterinary Medicine, University of Tehran, for parasitological analysis. Following the clinical examination, histopathological analysis was performed on 10% NBF (neutral buffered formalin)-fixed samples from affected tissues, including the skin, skeletal muscle, and liver, to identify any pathological changes associated with the parasitic infections. Furthermore, the DNA was extracted from the 99% ethanol-fixed samples using a commercial DNA extraction tissue kit (SinaPure DNA, Iran), and PCR was performed using Peri18S-F1 (5'-ACC TGG TTG ATC CTG CCA GT-3') and Peri18S-R1 (5'-TGC AGG TTC ACC TAC GGA AA-3') (first reaction), and Peri18S-F2 (5'-CCG CGG TAA TTC CAG CTC-3') and Peri18S-R2 (5'-GAT CCC CTA ACT TTC GTT CTT GA-3') (second round) primers for the identified parasites. Finally, the PCR products were sequenced using Sanger dideoxy sequencing methods, and the resulting sequences were compared to sequences in the BLAST search program to provide a comprehensive picture of the current parasite-based disorder. The crustacean L. cyprinacea and the epibiont sessilid E. wuhanensis were identified in the examined ornamental guppy (6/30) and sailfin molly (6/30), with an overall parasitic prevalence of 20.00% (12/60). Ciliates were found in all tissue lesions but not in fish without lesions. A great number of the ciliated protozoan E. wuhanensis were found attached to the integumentary area of L. cyprinacea. Microscopically, oval to round granulomatous lesions were observed in cutaneous and skeletal muscles. Lymphoplasmacytic dermatitis and myositis were also observed. The crustacean L. cyprinacea serves as a mechanical vector for E. wuhanensis infection and spreads the disease in ornamental fish farming operations. For the first time in Iran, we successfully presented diagnostic morphological and molecular data on sessilids isolated from L. cyprinacea. Based on the findings of the current study, such parasitic infections may cause significant economic losses following invasion of the integument area of fish, eventually leading to death, if treatment is neglected or inadequate. Furthermore, the findings of the analysis were used to develop effective diagnostic approaches for the affected fish, as well as recommendations for improved health conditions to prevent future outbreaks of parasitic infections. However, further research is needed to determine the precise mechanisms of crustacean attachment and host-crustacean-peritrich protozoan interactions. Furthermore, the direct and indirect effects of various environmental factors on the emergence and spread of the current disease should be considered.
Collapse
Affiliation(s)
- Hooman Rahmati-Holasoo
- Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Amin Marandi
- Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
| | - Sara Shokrpoor
- Department of Pathology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
| | - Taranom Goodarzi
- Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Zahra Ziafati Kafi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Iradj Ashrafi Tamai
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | | |
Collapse
|
5
|
Abdollahi M, Lotfollahzadeh S, Shokrpoor S, Ashrafi Tamai I. Acute cysticercosis caused by Cysticercus tenuicollis in lambs. J Vet Intern Med 2023; 37:1614-1618. [PMID: 37246792 PMCID: PMC10365031 DOI: 10.1111/jvim.16782] [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: 09/08/2022] [Accepted: 05/12/2023] [Indexed: 05/30/2023] Open
Abstract
Twelve 30- to 75-day-old mixed breed lambs were examined in an intensive system because of sudden recumbency and death. Clinical examination revealed sudden recumbency, visceral pain, and auscultation of respiratory crackles. Lambs died shortly (between 30 minutes and 3 hours) after the onset of clinical signs. The lambs were necropsied, and after routine parasitology, bacteriology and histopathology procedures, the occurrence of acute cysticercosis caused by Cysticercus tenuicollis was confirmed. The use of the suspect infested feed (newly purchased starter concentrate) was discontinued and other lambs of the flock were treated with praziquantel (15 mg/kg, single dose, orally). After these actions, no new cases were observed. The present study showed the importance of preventive measures against cysticercosis in intensive sheep farming systems which include proper storage of feed, preventing feed and environmental access by potential definitive hosts, and implementing consistent parasite control programs in dogs that are in contact with sheep.
Collapse
Affiliation(s)
- Mostafa Abdollahi
- Department of Clinical Sciences, Faculty of Veterinary MedicineSemnan UniversitySemnanIran
| | - Samad Lotfollahzadeh
- Department of Internal Medicine, Faculty of Veterinary MedicineUniversity of TehranTehranIran
| | - Sara Shokrpoor
- Department of Pathology, Faculty of Veterinary MedicineUniversity of TehranTehranIran
| | - Iradj Ashrafi Tamai
- Department of Microbiology and Immunology, Faculty of Veterinary MedicineUniversity of TehranTehranIran
| |
Collapse
|
6
|
Beikzadeh B, Ashrafi Tamai I, Zahraei Salehi T. Construction of live-attenuated Trueperella pyogenes by antibiotic treatment and sequential passage: methods for vaccine development. Arch Microbiol 2023; 205:147. [PMID: 36973450 PMCID: PMC10042400 DOI: 10.1007/s00203-023-03481-4] [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: 01/25/2023] [Revised: 03/11/2023] [Accepted: 03/11/2023] [Indexed: 03/29/2023]
Abstract
Trueperella pyogenes (T. pyogenes) is a zoonotic pathogen that is cause a variety of pyogenic diseases in animals. The complex pathogenicity and various virulence factors are important challenges to produce an effective vaccine. According to previous trials, inactivated whole-cell bacteria or recombinant vaccines were unsuccessful in preventing disease. Thus, this study aims to introduce a new vaccine candidate based on a live-attenuated platform. For this purpose, first T. pyogenes was subjected to sequential passage (SP) and antibiotic treatment (AT) to lose their pathogenicity. Second, Plo and fimA expressions as virulence genes were evaluated by qPCR and then mice were challenged with bacteria from SP and AT culture by intraperitoneal route. Compared to the control group (T. pyogenes-wild type), plo and fimA gene expressions were downregulated and vaccinated mice have a normal spleen appearance in contrast to the control group. In addition, there was no significant difference between bacterial count from spleen, liver, heart and peritoneal fluid in vaccinated mice and the control group. In conclusion, this study introduces a new T. pyogenes vaccine candidate based on a live-attenuated strategy that mimics natural infection without pathogenicity for further investigation on vaccines against T. pyogenes infections.
Collapse
Affiliation(s)
- Babak Beikzadeh
- Department of Cell and Molecular Biology & Microbiology, Faculty of Biological Sciences and Technology, University of Isfahan, Isfahan, Iran
| | - Iradj Ashrafi Tamai
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
| | - Taghi Zahraei Salehi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| |
Collapse
|
7
|
Hajigholamreza H, Sharifzadeh A, Hassan J, Shokri H, Akbaripazouki A, Pakbin B, Tamai IA. Influence of menthol on biofilm formation, ergosterol content, and cell surface hydrophobicity of Candida glabrata. FEMS Microbiol Lett 2023; 370:fnad065. [PMID: 37429611 DOI: 10.1093/femsle/fnad065] [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: 01/18/2023] [Revised: 06/21/2023] [Accepted: 07/03/2023] [Indexed: 07/12/2023] Open
Abstract
Resistance to synthetic antifungals has become one of the leading public health challenges around the world. Accordingly, novel antifungal products like naturally occurring molecules can be one of the potential ways to reach efficient curative approaches to control candidiasis. This work evaluated the effect of menthol on cell surface hydrophobicity (CSH), biofilm formation, growth, and ergosterol content of Candida glabrata, a yeast with a high resistance against antifungal agents. Disc diffusion method (susceptibility to synthetic antifungals), broth micro-dilution method (Susceptibility to menthol), 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide reduction assay (biofilm formation), High-performance liquid chromatography (HPLC) technique (ergosterol content), and adherence to n-hexadecane (CSH) were employed to determine the influence of menthol against C. glabrata isolates. The minimum inhibitory concentration (MIC) range of menthol versus C. glabrata was 1250-5000 µg/mL (mean ± SD: 3375 ± 1375 µg/mL). The mean rate of C. glabrata biofilm formation was decreased up to 97.67%, 81.15%, 71.21%, 63.72%, 47.53%, 26.31%, and 0.051% at 625, 1250, 2500, 5000, 10 000, 20 000, and 40 000 µg/mL concentrations, respectively. The percentages of CSH were significant in groups treated with MIC/2 (17.51 ± 5.52%) and MIC/4 (26 ± 5.87%) concentrations of menthol. Also, the percentage changes in membrane ergosterol were 15.97%, 45.34%, and 73.40% at 0.125, 0.25, and 0.5 mg/mL concentrations of menthol, respectively, in comparison with untreated control. The results showed the menthol impact versus sessile and planktonic C. glabrata cells, and the interference with ergosterol content, CSH, and biofilm formation, which made it a potent natural antifungal.
Collapse
Affiliation(s)
- Hamid Hajigholamreza
- Department of Microbiology and immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran 1416634793, Iran
| | - Aghil Sharifzadeh
- Department of Microbiology and immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran 1416634793, Iran
| | - Jalal Hassan
- Division of Toxicology, Department of Comparative Bioscience, Faculty of Veterinary Medicine, University of Tehran, Tehran 1416634793, Iran
| | - Hojjatollah Shokri
- Department of Pathobiology, Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Amol 4615664616, Iran
| | - Ali Akbaripazouki
- Department of Cell and Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran 1416634793, Iran
| | - Babak Pakbin
- Werner Siemens Chair of Synthetic Biotechnology, Dept. of Chemistry, Technical University of Munich (TUM), Lichtenberg Str. 4, 85748 Garching bei München, Germany
- Institute for Life Technologies, University of Applied Sciences Western Switzerland Valais-Wallis, Sion 2 1950, Switzerland
| | - Iradj Ashrafi Tamai
- Department of Microbiology and immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran 1416634793, Iran
| |
Collapse
|
8
|
Tamai IA, Mohammadzadeh A, Mahmoodi P, Pakbin B, Salehi TZ. Antimicrobial susceptibility, virulence genes and genomic characterization of Trueperella pyogenes isolated from abscesses in dairy cattle. Res Vet Sci 2023; 154:29-36. [PMID: 36434850 DOI: 10.1016/j.rvsc.2022.10.018] [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: 05/30/2022] [Revised: 10/14/2022] [Accepted: 10/20/2022] [Indexed: 11/07/2022]
Abstract
Trueperella pyogenes is an opportunistic animal pathogen mainly associated with various suppurative infections in wild and domestic animals. Limited studies have investigated the pathogenesis of diseases caused by this pathogen. The main objective of the current study was to investigate the prevalence, phenotypic properties, virulence genotypes, antimicrobial susceptibility and genetic characterization of T. pyogenes isolated from abscess lesions in different tissues of on-farm dairy cattle. The study was performed on 150 postpartum cattle with clinical abscess symptoms on 22 farms around Tehran, Iran. Classical and disk diffusion methods are used for phenotypic characterization and antibiotic susceptibility. Detection of virulence factor encoding genes and genomic characterization of the isolates also are carried out by conventional PCR and BOX-PCR assays, respectively. Sixty-eight T. pyogenes strains (45.3%) were isolated, 12 were identified as pure cultures and the other 56 strains were isolated from mixed cultures. Seven distinct biotypes were identified among the T. pyogenes isolates. The isolates were mostly resistance to trimethoprim-sulfamethoxazole (70.6%), erythromycin (36.7%), tetracycline (26.5%) and tylosin (23.5%) antibiotics. Also, the genes plo, nanH, nanP and fimA were detected in all isolates. Forty-two isolates (61.7%) carried all virulence factor genes detected in this study. Three isolates only carried plo, nanH, nanP and fimA genes were identified as the least frequent genotype. All sixty-eight isolates and the reference strain were categorized into seven main clusters (A-G). A strong association was observed between virulence factor encoding genes, pathogenicity and biochemical biotypes in some specific clonal relationships.
Collapse
Affiliation(s)
- Iradj Ashrafi Tamai
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran
| | - Abdolmajid Mohammadzadeh
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran.
| | - Pezhman Mahmoodi
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran
| | - Babak Pakbin
- Institute for Life Technologies, University of Applied Sciences Western Switzerland Valais-Wallis, 1950 Sion 2, Switzerland
| | - Taghi Zahraei Salehi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| |
Collapse
|
9
|
Pakbin B, Brück WM, Brück TB, Allahyari S, Ashrafi Tamai I. A quantitative prevalence of Escherichia coliO157 in different food samples using real-time qPCR method. Food Sci Nutr 2022; 11:228-235. [PMID: 36655112 PMCID: PMC9834875 DOI: 10.1002/fsn3.3055] [Citation(s) in RCA: 4] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/09/2022] [Accepted: 08/25/2022] [Indexed: 01/21/2023] Open
Abstract
Escherichia coli serogroup O157 is the main causative agent of several intestinal and extra-intestinal foodborne diseases in humans through consumption of low-dose contaminated foods such as milk, beef, and vegetables. To date, studies regarding the quantitative prevalence of E. coli O157 in foods are so limited. Therefore, this study aimed to evaluate the quantitative prevalence rate of E. coli serogroup O157 in raw milk (n = 144), vegetable salad (n = 174), and minced beef samples (n = 108) using the real-time qPCR SYBR green melting curve method targeting the rfbA gene. First, we evaluated the method and found a sensitive and specific qPCR assay with 1 log of CFU/ml detection limit to detect E. coli O157 (Tm = 80.3 ± 0.1°C). About 2.77%, 10.18%, and 9.19% of raw milk, minced beef, and vegetable salad samples, respectively, were contaminated with E. coli O157. Minced beef and vegetable salad samples were significantly more contaminated than raw milk samples. Population average of E. coli O157 in raw milk, minced beef, and vegetable salad samples were 2.22 ± 0.57, 3.30 ± 0.40, and 1.65 ± 0.44 log CFU/ml or gr, respectively. Significantly higher levels of population of E. coli O157 were observed in minced beef samples. Minced beef can be regarded as the main food in the transmission of this foodborne pathogen. Routine quantitative rapid monitoring is strongly suggested to be carried out to prevent foodborne diseases caused by E. coli O157.
Collapse
Affiliation(s)
- Babak Pakbin
- Institute for Life TechnologiesUniversity of Applied Sciences Western Switzerland Valais‐WallisSion 2Switzerland,Department of Chemistry, Werner Siemens Chair of Synthetic BiotechnologyTechnical University of Munich (TUM)MünchenGermany,Medical Microbiology Research CenterQazvin University of Medical SciencesQazvinIran
| | - Wolfram Manuel Brück
- Institute for Life TechnologiesUniversity of Applied Sciences Western Switzerland Valais‐WallisSion 2Switzerland
| | - Thomas B. Brück
- Department of Chemistry, Werner Siemens Chair of Synthetic BiotechnologyTechnical University of Munich (TUM)MünchenGermany
| | - Samaneh Allahyari
- Medical Microbiology Research CenterQazvin University of Medical SciencesQazvinIran
| | - Iradj Ashrafi Tamai
- Department of Microbiology and Immunology, Faculty of Veterinary MedicineUniversity of TehranTehranIran
| |
Collapse
|
10
|
Rezapanah MR, Ziafati Kafi Z, Ashrafi Tamai I, Sadri N, Hojabr Rajeoni A, Jamiri F, GhalyanchiLangeroudi A. Complete genome sequence of Himetobi P strain Sh.Moghaddam, isolated from the Laodelphax striatellus (small brown planthopper). BMC Res Notes 2022; 15:138. [PMID: 35422010 PMCID: PMC9008957 DOI: 10.1186/s13104-022-06027-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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 04/05/2022] [Indexed: 11/17/2022] Open
Abstract
Objective Himetobi P virus (HiPV) is an insect virus belonging to the genus Cripavirus in the Dicistroviridae family within the Picornavirales order. Himetobi P strain. Sh.Moghaddam is the first study reported, was isolated from the Laodelphax striatellus (small brown planthopper) of an internal chicken organ in Iran. Data description Genomic analysis showed a nucleotide identity of 93.16% with the family Dicistroviridae, genus Triatovirus, and species Himetobi P. The genome assembly comprised 9227 bp, with a 38.8% GC content. Annotation of the genome showed 2 ORF, a total of 2 genes: including 2 coding sequences (CDs) (total) and 8 Miss features. Thus, the whole-genome sequence presented in this study serves as a platform for detecting new genes that may contribute to the pathogenicity of the Himetobi P strain. Sh.Moghaddam.
Collapse
Affiliation(s)
- Mohammad Reza Rezapanah
- Iranian Research Institute of Plant Protection (IRIPP), Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran.,Center of Excellence for Organic Agriculture, University of Tehran, Tehran, Iran.,Iranian Network for Research in Viral Diseases, University of Tehran, Tehran, Iran
| | - Zahra Ziafati Kafi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Iradj Ashrafi Tamai
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Naser Sadri
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Ali Hojabr Rajeoni
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Fahimeh Jamiri
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Arash GhalyanchiLangeroudi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
| |
Collapse
|
11
|
Tamai IA, Mohammadzadeh A, Salehi TZ, Mahmoodi P, Pakbin B. Expression of virulence factor genes in co-infections with Trueperella pyogenes isolates and other bacterial pathogens; an in vivo study. Microb Pathog 2022; 164:105435. [DOI: 10.1016/j.micpath.2022.105435] [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] [Received: 08/11/2021] [Revised: 01/25/2022] [Accepted: 01/30/2022] [Indexed: 10/19/2022]
|
12
|
Ashrafi Tamai I, Mohammadzadeh A, Ghalyanchi Langeroudi A, Mahmoodi P, Ziafati Kafi Z, Pakbin B, Zahraei Salehi T. Complete genome sequence of Trueperella pyogenes strain Arash114, isolated from the uterus of a water buffalo (Bubalus bubalis) in Iran. BMC Res Notes 2021; 14:323. [PMID: 34425879 PMCID: PMC8381550 DOI: 10.1186/s13104-021-05734-1] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 08/11/2021] [Indexed: 11/30/2022] Open
Abstract
Objective Trueperella pyogenes has been considered a major causative agent of metritis, abortion, and death in a broad range of domestic and wild animals, including cattle, swine, sheep, goats, camels, buffalo, deer, antelopes, reptiles, and birds. Data description Here, we report the complete chromosome sequence of Trueperella pyogenes strain Arash114, isolated from the uterus of a water buffalo (Bubalus bubalis) died due to the infection caused by this pathogen. The genome assembly comprised 2,338,282 bp, with a 59.5% GC content. Annotation of the genome showed 46 tRNA genes, 6 rRNA, 1 CRISPR and 2059 coding sequences. Also, several genes coding for antimicrobial resistance such as tetW and virulence factor including plo, nanH, nanP, cbp and 4 fimbrial proteins were found. This study will advance our knowledge regarding the metabolism, virulence factors, antibiotic resistance and evolution of Arash114 strain and serve as an appropriate template for future researches.
Collapse
Affiliation(s)
- Iradj Ashrafi Tamai
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran
| | - Abdolmajid Mohammadzadeh
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran.
| | - Arash Ghalyanchi Langeroudi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Pezhman Mahmoodi
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran
| | - Zahra Ziafati Kafi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Babak Pakbin
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Taghi Zahraei Salehi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| |
Collapse
|
13
|
Staji H, Yousefi M, Hamedani MA, Tamai IA, Khaligh SG. Genetic characterization and phylogenetic of Anaplasma capra in Persian onagers (Equus hemionus onager). Vet Microbiol 2021; 261:109199. [PMID: 34385006 DOI: 10.1016/j.vetmic.2021.109199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 03/17/2021] [Accepted: 08/03/2021] [Indexed: 10/20/2022]
Abstract
Anaplasma spp. are among the most recognized arthropod-borne infectious agents. Although the novel A. capra has been isolated from wildlife, livestock, and hard ticks from many parts of the world, there is no report regarding the identification of this pathogen from equines and little is known about the epidemiology of A. capra in Equidae. In this study, A. capra was identified in two out of ten blood specimens of wild onagers (Equus hemionus onager) during a routine health check-up in Semnan, Iran by light microscopy and molecular analyses while other pathogens were not detected. First, inclusions on RBC's were observed in two blood smears by light microscopy. Then, the blood specimens of both animals were analyzed by realtime-PCR for Anaplasma, Ehrlichia, and Theileria infections. A 1400 bp sequence of 16S rRNA belonging to Anaplasmataceae and 874 bp fragment for groEL gene for A. capra were amplified in Anaplasma positive samples and sequenced. Preliminary BLAST analysis of sequenced fragments showed high homology to A. capra strains in GenBank database. Finally, nested PCR and restriction enzyme fragment length polymorphism techniques confirmed the pathogen as A. capra. To the best of our knowledge, this study has reported the occurrence of A. capra in wild onagers for the first time and suggests that equines could be infected with this pathogen and act as reservoirs for A. capra.
Collapse
Affiliation(s)
- Hamid Staji
- Department of Pathobiology, Faculty of Veterinary Medicine, Semnan University, Semnan, Iran.
| | - Mohammadhasan Yousefi
- Department of Basic Sciences, Faculty of Veterinary Medicine, Semnan University, Semnan, Iran
| | - Mahmoud Ahmadi Hamedani
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Semnan University, Semnan, Iran
| | - Iradj Ashrafi Tamai
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Sahar Ghaffari Khaligh
- Department of Pathobiology, Faculty of Veterinary Medicine, Semnan University, Semnan, Iran
| |
Collapse
|
14
|
Ashrafi Tamai I, Mohammadzadeh A, Zahraei Salehi T, Mahmoodi P, Pakbin B. Investigation of antimicrobial susceptibility and virulence factor genes in Trueperella pyogenes isolated from clinical mastitis cases of dairy cows. Food Sci Nutr 2021; 9:4529-4538. [PMID: 34401100 PMCID: PMC8358342 DOI: 10.1002/fsn3.2431] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/29/2021] [Accepted: 06/12/2021] [Indexed: 11/29/2022] Open
Abstract
Trueperella pyogenes is an opportunistic pathogen causing important diseases including mastitis and metritis in domestic animals such as dairy cows leading to prominent economic losses in food production industry. The aim of this study was to investigate bacterial species, antimicrobial susceptibility, and presence of virulence factor genes and genotyping of T. pyogenes isolates associated with summer mastitis cases from 22 different farms around Tehran, Iran. Fifty-five percent of dairy cows with clinical mastitis symptoms was infected by T. pyogenesis indicated that this pathogen is the most important contributor to clinical mastitis in dairy cows in the present study. A significant correlation was illustrated between presence of virulence factor genes of isolated pathogen, biochemical patterns, and the utter infected types. Multidrug resistance susceptibility observed between isolates indicated the important need for prudent use of antimicrobials in treatment of mastitis caused by T. pyogenes and increased concerning of consumer health associated with recent problems of antimicrobial resistance. The categorization of isolates was implemented into seven different clonal related types by COX-PCR at 80% of similarity cutoff with significance relationship to clonal types, CAMP test result and sampling time and biochemical profile. Regarding to the results obtained at the present study, T. pyogenes can be considered as an important typically cause of purulent and acute form of clinical bovine mastitis and loss of dairy productivity. Further studies with more sample size and high-throughput omic methods in various sampling time and areas are suggested for study of this pathogen precisely.
Collapse
Affiliation(s)
- Iradj Ashrafi Tamai
- Department of PathobiologyFaculty of Veterinary ScienceBu‐Ali Sina UniversityHamedanIran
| | | | - Taghi Zahraei Salehi
- Department of Microbiology and ImmunologyFaculty of Veterinary MedicineUniversity of TehranTehranIran
| | - Pezhman Mahmoodi
- Department of PathobiologyFaculty of Veterinary ScienceBu‐Ali Sina UniversityHamedanIran
| | - Babak Pakbin
- Medical Microbiology Research CenterQazvin University of Medical SciencesQazvinIran
| |
Collapse
|
15
|
Tamai IA, Pakbin B, Kafi ZZ, Brück WM. Oral Abscess Caused by Chryseobacterium indologenes in Ball Python ( Python regius); A Case Report. Antibiotics (Basel) 2021; 10:antibiotics10060686. [PMID: 34201171 PMCID: PMC8230243 DOI: 10.3390/antibiotics10060686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 05/04/2021] [Revised: 05/28/2021] [Accepted: 06/06/2021] [Indexed: 11/16/2022] Open
Abstract
Chryseobacterium indologenes is an opportunistic pathogen isolated from human infections and, rarely, from some aquatic animals. A 3-year-old male ball python (Python regius) was admitted to the veterinary clinic by a pet owner because of acute respiratory and swallowing failure. During physical examinations, oral secretions and abscesses were observed in the mouth cavity and throat of the animal. After microbiological analysis including isolation, identification, and 16s rRNA sequencing, C. indologenes was detected as the main cause of the oral abscess in this case. Phylogenetic relatedness analysis showed a close relationship between this isolate and other strains isolated from human infections. Antimicrobial susceptibility testing revealed that the isolate was multi-drug resistant. However, it was very sensitive to minocycline, ceftazidime, and tetracycline. The patient was treated by antibiotic therapy and completely recovered after two weeks. To the best of our knowledge, this is the first incidence of C. indologenes in an oral abscess in a ball python. As a result we would consider this organism as an opportunistic animal pathogen with zoonotic potentiality.
Collapse
Affiliation(s)
- Iradj Ashrafi Tamai
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran 1417466191, Iran; (I.A.T.); (Z.Z.K.)
| | - Babak Pakbin
- Institute for Life Technologies, University of Applied Sciences Western Switzerland Valais-Wallis, 1950 Sion 2, Switzerland
- Correspondence: (B.P.); (W.M.B.)
| | - Zahra Ziafati Kafi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran 1417466191, Iran; (I.A.T.); (Z.Z.K.)
| | - Wolfram Manuel Brück
- Institute for Life Technologies, University of Applied Sciences Western Switzerland Valais-Wallis, 1950 Sion 2, Switzerland
- Correspondence: (B.P.); (W.M.B.)
| |
Collapse
|
16
|
Tamai IA, Pakbin B, Fasaei BN. Genetic diversity and antifungal susceptibility of Candida albicans isolates from Iranian HIV-infected patients with oral candidiasis. BMC Res Notes 2021; 14:93. [PMID: 33691787 PMCID: PMC7945322 DOI: 10.1186/s13104-021-05498-8] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 02/23/2021] [Indexed: 02/06/2023] Open
Abstract
Objective The objectives of this study were to investigate the antifungal susceptibility and genetic diversity of Candida albicans isolated from HIV+ patients with oropharyngeal candidiasis. A total of 50 C. albicans isolates were cultured on Sabouraud glucose agar containing chloramophenicol. The antifungal susceptibility of the isolates against fluconazole, clotrimazole, nystatin, amphotericin B, ketoconazole and flucytosine was assessed using disc diffusion method. The genetic diversity of C. albicans isolates was determined using random amplified polymorphic DNA marker. Results The inhibition zones ranged from 4 ± 1.8 to 40 ± 3.8 mm for fluconazole, 7 ± 1.0 to 37 ± 1.8 mm for ketoconazole, 14 ± 0.8 to24 ± 0.8 mm for amphotericin B, 25 ± 0.0 to 33 ± 0.0 mm for nystatin and 7 ± 4.2 to 40 ± 0.0 mm for clotrimazole. At 90% similarity, three distinct groups were observed. The smallest cluster composed of 3 isolates, whereas the largest one composed of 17 isolates. 32% (16/50), 28% (14/50) and 14% (7/50) were resistant to fluconazole, ketoconazole and clotrimazole, respectively.
Collapse
Affiliation(s)
- Iradj Ashrafi Tamai
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, P.O. Box: 14155-6453, Tehran, Iran
| | - Babak Pakbin
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, P.O. Box: 14155-6453, Tehran, Iran.
| | - Bahar Nayeri Fasaei
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, P.O. Box: 14155-6453, Tehran, Iran
| |
Collapse
|
17
|
Nadi ZR, Salehi TZ, Tamai IA, Foroushani AR, Sillanpaa M, Dallal MMS. Evaluation of antibiotic resistance and prevalence of common Salmonella enterica serovars isolated from foodborne outbreaks. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104660] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
18
|
Nayeri Fasaei B, Naserli S, Zahraei Salehi T, Saeedinia A, Behroozikhah A, Ashrafi Tamai I. New Brucella abortus S19 Mutant to Improve Distinction Between Infected and Vaccinated Animals. Iran J Biotechnol 2019; 17:e2159. [PMID: 32195284 PMCID: PMC7080968 DOI: 10.29252/ijb.2159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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] [Indexed: 10/31/2022]
Abstract
Background Using Brucella abortus Strain 19 (S19) to control bovine brucellosis is restricted due to induce antibodies to the O-side chain of the smooth lipopolysaccharide (LPS) which may be difficult to differentiate vaccinated and infected animals. Furthermore, it is virulent for humans and can induce abortion to cattle. Objectives The aim of this study was to employ gene knockout B. abortus S19 for the first time to eliminate diagnostic defects and obtain the attenuated mutant strain. Material and Methods The wbkA gene, which is one of the LPS O-chain coding genes, was knocked out in vaccinal Brucella abortus S19. The proliferative response and immunoglobulin M production were analyzed in wbkA deletion strain-infected BALB/c mice. Results The loss of wbkA gene function resulted in induction of the splenocyte proliferative response in mice infected by the mutant S19 strain compare to those induced by parental S19 and RB51 strains. Moreover, wbkA mutant did not induce any IgM antibody response using the enzyme-linked immunosorbent assay. Conclusions As a result, the new mutant S19 strain had deficiency in its LPS O-chain structure, besides cannot induce IgM response then, reduce mistakes to discriminate between vaccinated and infected animal, and also can be considered as a new vaccine candidate.
Collapse
Affiliation(s)
- Bahar Nayeri Fasaei
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Soulmaz Naserli
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Taghi Zahraei Salehi
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Alireza Saeedinia
- Department of Bioscience and Biotechnology, Malek-Ashtar University of Technology, Tehran, Iran
| | - Alimohammad Behroozikhah
- Department of Brucellosis, Razi Vaccine and Serum Research Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Iradj Ashrafi Tamai
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| |
Collapse
|
19
|
Tabatabaei S, Najafifar A, Askari Badouei M, Zahraei Salehi T, Ashrafi Tamai I, Khaksar E, Abbassi MS, Ghazisaeedi F. Genetic characterisation of methicillin-resistant Staphylococcus aureus and Staphylococcus pseudintermedius in pets and veterinary personnel in Iran: new insights into emerging methicillin-resistant S. pseudintermedius (MRSP). J Glob Antimicrob Resist 2018; 16:6-10. [PMID: 30172831 DOI: 10.1016/j.jgar.2018.08.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 05/31/2018] [Revised: 07/28/2018] [Accepted: 08/24/2018] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVES Methicillin-resistant staphylococci, including methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-resistant Staphylococcus pseudintermedius (MRSP), pose a threat to animal and human health worldwide. Veterinary staff and pets may play a role in the spread of resistant clones. METHODS A total of 125 samples from veterinary staff (n=50), dogs (n=49) and cats (n=26) were investigated. Obtained isolates were tested for the methicillin resistance gene mecA and were subjected to multiplex PCR to differentiate coagulase-positive species. Following SCCmec and spa typing, isolates were tested for the presence of various toxin and virulence genes and phenotypic resistance to common antimicrobials. RESULTS Overall, 4 MRSA were isolated from two veterinarians and two dogs and 19 MRSP were found in eleven dogs (12 isolates) and five cats (7 isolates). The MRSA isolates possessed sea (2) and eta (3) virulence genes and the MRSP isolates possessed sea (6), expA (15), expB (1) and siet (19) genes. SCCmec type II and three spa types (t186, t1816 and t10897) were identified in the MRSA isolates. Most of the MRSP isolates belonged to SCCmec types II (2 isolates) and V (10 isolates); however, the remaining 7 isolates were untypeable and contained class C1 mec. The majority of isolates were multidrug-resistant (MDR). CONCLUSION These findings show that pets and veterinarians could be potential sources of MDR-MRSA and MDR-MRSP in Iran. Taken together, these findings warrant future investigations on the epidemiology and public-health significance of MDR-MRSA and MDR-MRSP both in veterinarians and companion animals in Iran.
Collapse
Affiliation(s)
- Saeid Tabatabaei
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Arash Najafifar
- Department of Pathobiology, Faculty of Veterinary Medicine, Garmsar Branch, Islamic Azad University, Garmsar, Iran
| | - Mahdi Askari Badouei
- Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, P.O. Box 91779489741793, Mashhad, Iran.
| | - Taghi Zahraei Salehi
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Iradj Ashrafi Tamai
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Ehsan Khaksar
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Garmsar Branch, Islamic Azad University, Garmsar, Iran
| | - Mohamed Salah Abbassi
- Université de Tunis El Manar, Tunisian Institute of Veterinary Research, Tunis, Tunisia
| | - Fereshteh Ghazisaeedi
- Department of Clinical Pathology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| |
Collapse
|
20
|
Ashrafi Tamai I, Mohammadzadeh A, Zahraei Salehi T, Mahmoodi P. Genomic characterisation, detection of genes encoding virulence factors and evaluation of antibiotic resistance of Trueperella pyogenes isolated from cattle with clinical metritis. Antonie Van Leeuwenhoek 2018; 111:2441-2453. [PMID: 30066209 DOI: 10.1007/s10482-018-1133-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 07/20/2018] [Indexed: 10/28/2022]
Abstract
Trueperella pyogenes is one of the most important microorganisms causing metritis in post-partum cattle. Co-infection with other bacterial species such as Escherichia coli or Fusobacterium necrofurom increases the severity of the disease and the persistence of bacteria in utero. The aim of this study was to investigate the frequency of T. pyogenes strains, and their virulence and antimicrobial resistant profiles in metritis cases. The study was carried out on 200 samples obtained from metritis discharges of postpartum cattle on 18 farms around Tehran, Iran. Sixty-five T. pyogenes isolates (32.5%) were identified, of which 16 isolates were detected as pure cultures and the other 49 isolates from cultures most commonly mixed with E. coli or F. necrofurom. In terms of diversity in biochemical characteristic of T. pyogenes strains, 8 different biotypes were identified among the isolates. Single or multi antimicrobial resistance was observed in 48 isolates (73.9%), which was mostly against trimethoprim sulfamethoxazole, azithromycin, erythromycin and streptomycin. The tetracycline resistance gene tetW and macrolide resistance genes ermB and ermX were detected in 30, 18 and 25 isolates, respectively. In the screening of genes encoding virulence factors, fimA and plo genes were identified in all tested isolates. Genes encoding nanP, nanH, fimC, fimG, fimE and cbpA were detected in 50, 54, 45, 40, 50 and 37 of isolates, respectively. Thirteen different genotypes were observed in these T. pyogenes isolates. A significant association between clonal types and virulence factor genes, biochemical profile, CAMP test result, severity of the disease and sampling time was detected.
Collapse
Affiliation(s)
- Iradj Ashrafi Tamai
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran
| | - Abdolmajid Mohammadzadeh
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran.
| | - Taghi Zahraei Salehi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Pezhman Mahmoodi
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran
| |
Collapse
|
21
|
Fardsanei F, Nikkhahi F, Bakhshi B, Salehi TZ, Tamai IA, Soltan Dallal MM. Molecular characterization of Salmonella enterica serotype Enteritidis isolates from food and human samples by serotyping, antimicrobial resistance, plasmid profiling, (GTG)5-PCR and ERIC-PCR. New Microbes New Infect 2016; 14:24-30. [PMID: 27656286 PMCID: PMC5021763 DOI: 10.1016/j.nmni.2016.07.016] [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: 05/16/2016] [Revised: 07/27/2016] [Accepted: 07/29/2016] [Indexed: 11/16/2022] Open
Abstract
In recent years, Salmonella enterica serovar Enteritidis has been a primary cause of human salmonellosis in many countries. The major objective of this study was to investigate genetic diversity among Salmonella Enteritidis strains from different origins (food and human) by Enterobacterial Repetitive Intergenic Consensus (ERIC) -PCR, as well as to assess their plasmid profiling and antimicrobial resistance. A total of 30 Salmonella Enteritidis isolates, 15 from food samples (chicken, lamb, beef and duck meats) and 15 from clinical samples were collected in Tehran. Identification of isolates as Salmonella was confirmed by using conventional standard biochemical and serological tests. Multiplex-PCR was used for serotyping of isolates to identify Salmonella Enteritidis. Antimicrobial susceptibility testing to 16 agents founds drug resistance patterns among Salmonella Enteritidis isolates. No resistance was observed to cephalexin, ceftriaxone, ceftazidime and cefotaxime, ciprofloxacin, imipenem or meropenem, chloramphenicol and gentamicin. The highest resistance (96.7%) was observed to nitrofurantoin. Seven plasmid profiles (P1-P7) were detected, and a 68-kb plasmid was found in all isolates. Two different primers; ERIC and (GTG)5 were used for genotyping, which each produced four profiles. The majority of clinical and food isolates fell into two separate common types (CTs) with a similar percentage of 95% by ERIC-PCR. Using primer (GTG)5, 29 isolates incorporated in three CTs with 70% of isolates showing a single banding pattern. Limited genetic diversity among human and food isolates of Salmonella Enteritidis may indicate that contaminated foods were possibly the source of human salmonellosis. These results confirmed that ERIC-PCR genotyping has limited discriminatory power for Salmonella Enteritidis of different origin.
Collapse
Affiliation(s)
- F Fardsanei
- Division of Microbiology, Department of Pathobiology, School of Public Health, Tehran University of Medical Science, Tehran, Iran
| | - F Nikkhahi
- Division of Microbiology, Department of Pathobiology, School of Public Health, Tehran University of Medical Science, Tehran, Iran
| | - B Bakhshi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran; Food Microbiology Research Centre, Tehran University of Medical Sciences, Tehran, Iran
| | - T Z Salehi
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Iran
| | - I A Tamai
- Department of Microbiology, Faculty of Veterinary Medicine, University of Tehran, Iran; Department of Microbiology, Buali Sina University, Hamedan, Iran
| | - M M Soltan Dallal
- Division of Microbiology, Department of Pathobiology, School of Public Health, Tehran University of Medical Science, Tehran, Iran; Food Microbiology Research Centre, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
22
|
Tamai IA, Salehi TZ, Sharifzadeh A, Shokri H, Khosravi AR. Repetitive sequences based on genotyping of Candida albicans isolates obtained from Iranian patients with human immunodeficiency virus. Iran J Basic Med Sci 2014; 17:831-5. [PMID: 25691923 PMCID: PMC4328090] [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: 01/01/2014] [Accepted: 05/14/2014] [Indexed: 12/02/2022]
Abstract
OBJECTIVES Candidiasis infection caused by Candida albicans has been known as a major problem in patients with immune disorders. The objective of this study was to genotype the C. albicans isolates obtained from oral cavity of patients with positive human immunodeficiency virus (HIV(+)) with or/and without oropharyngeal candidiasis (OPC). MATERIALS AND METHODS A total of 100 C. albicans isolates from Iranian HIV(+)patients were genotyped using specific PCR primers of the 25S rDNA and RPS genes. RESULTS The frequencies of genotypes A, B and C which were achieved using 25S rDNA , were 66, 24 and 10 percent, respectively. In addition, genotypes D and E were not found in this study. Each C. albicans genotype was further classified into four subtypes (types 2, 3, 2/3 and 3/4) by PCR amplification targeting RPS sequence. CONCLUSION In general, genotype A3 constituted the majority of understudy clinical isolates obtained from oral cavity of Iranian HIV(+) patients.
Collapse
Affiliation(s)
- Iradj Ashrafi Tamai
- Bu Ali Sina University, Hamedan, Iran,Research and Training Center of Imam Khomeini Hospital, Tehran, Iran
| | - Taghi Zahraei Salehi
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Aghil Sharifzadeh
- Mycology Research Center, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Hojjatollah Shokri
- Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Amol, Iran
| | - Ali Reza Khosravi
- Mycology Research Center, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran,Corresponding author: Ali Reza Khosravi. Mycology Research Center, Faculty of Veterinary Medicine, University of Tehran, AzadiSt.,Tehran, Iran. Tel: +98- 21-61117151; Fax: +98-21- 66933222;
| |
Collapse
|
23
|
Shafiee S, Khosravi AR, Ashrafi Tamai I. Comparative study of Microsporum canis isolates by DNA fingerprinting. Mycoses 2014; 57:507-12. [PMID: 24635009 DOI: 10.1111/myc.12189] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 11/16/2013] [Accepted: 02/20/2014] [Indexed: 11/29/2022]
Abstract
Microsporum canis is a zoophilic fungus and it is an important agent of dermatophytosis. Cats act as important reservoirs. Clinically, it is too difficult to differentiate dermatophytosis caused by various species, also this fungus loses its morphological characteristics easily because of subculture; so using of rapid and accurate laboratory techniques for identifying the dermatophytes is important, therefore, RAPD-PCR was applied for the differentiation of the isolates. In this study, 10 M. canis isolates were detected in cats, dog, human, fox and rabbit at the Mycology Research Center, Faculty of Veterinary Medicine, University of Tehran. For running the RAPD-PCR, PCR set system and three random primers OPU 15, OPU 13 and OPA 04 were used. Then phylogenetic tree and similarity coefficient table were drawn. The results showed that there were some common bands between M. canis isolates. There were some specific bands for each isolates, as well. Our study showed, despite the typical morphology of the whole isolates, they were placed in different branches in molecular typing.
Collapse
Affiliation(s)
- Shabnam Shafiee
- Mycology Research Center, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | | | | |
Collapse
|