Staphylococcus aureus is the most frequently isolated pathogen from bovine mastitis including subclinical, clinical, and chronic infections. Virulence factors possessed by S. aid in causing infection inflammation producing toxins proteins, which are responsible for pathogenesis of disease. In current study out 51 animals presented with clinical mastitis, was milk 18 animals. confirmed genus spe...

Characteristics of Prophage Patterns and Virulence Gene Profiles among Methicillin-Resistant Staphylococcus aureus Isolates from Patients with Diabetic Foot Infections in a Referral Hospital Tehran, Iran

background: the aim of this study was to determine the prevalence of virulence-associated genes and enterobacterial repetitive intergenic consensus pcr (eric-pcr) analysis of campylobacter spp. isolated from children with diarrhea in iran. methods: a total of 200 stool specimens were obtained from children under 5 years during july 2012 to july 2013. detection of c. jejuni and c. coli was perfo...

colibacillosis caused by e.coli is one of the most common illnesses in commercial chickens and induce high financial losses in the poultry industry due to morbidity, mortality and antibiotic expenses because of overuses. e.coli can mostly cause disease as a secondary or opportunistic pathogen, while certain strains with specific virulence factors even as primary pathogen can cause colibacillosi...

Yersinia enterocolitica is an important pathogen to animals and humans. Thirteen strains of Y. enterocolitica were isolated from diseased fish. The partial 16SrDNA gene, five virulence genes, pathogenicity, and drug resistance of Y. enterocolitica strain G6029 were studied using molecular biological technology and toxicological method. Results showed that the length of amplified 16SrDNA sequenc...

  Background and Objective: Helicobacter pylori has several strains with different degrees of virulence. The aim of this study was to detect two major important virulence factors, cagA/vacA genotypes, and to determine correlations among different cagA/vacA genotypes and histological features of chronic gastritis in Iranian patients. Methods: In this cross- sectional study, Gastric bi...

Pathogenic Escherichia coli strains cause a wide range of extra intestinal infections including urinary tract infection in humans and colibacillosis in poultry. They are classified into uropathogenic E. coli (UPEC) and avian pathogenic E. coli (APEC) with genetic similarities and variations. Their pathogenicity is related to the virulence-encoding genes like sfa</...

Background: Urinary tract infections are one of the most frequent health problems and Uropathogenic Escherichia coli is the major pathogen resulting UTIs. The severity of UTIs is caused by the expression of a large range of virulence factors.In this study, we evaluated the allelic frequency fimH gene, in UPECs isolated from patients with UTIs. This study also aimed to determine the roles of C64...