Background: The emergence and propagation of different phylogenetic groups of antimicrobial-resistant E. coli have become a worldwide health concern in human and veterinary medicine. Therefore, the evaluation of the phylogenetic distribution of antibiotic-resistant E. coli is important for therapeutic and economic purposes. The aims of this study were to determine phylogenetic groups and patter...

results the present work figured out that the heterogeneity of the quasispecies of our local strains 4a was high showing up 15% diversity. this study also showed four glycosylation sites that play an important role in the entry of the virus and protein folding. besides, different epitpoes were identified in different regions of the e1 and e2 domains; a finding which would help in determining th...

peanut plants showing mottling, yellow and necrotic spots on leaves were collected from peanut fields in golestan province. electron microscopic studies revealed the presence of flexuous filamentous particles ca. 700 nm in length, which was suggestive of a potyvirus infection. healthy nicotiana benthamiana plants mechanically inoculated with sap from infected peanut plants showed mottling, down...

background escherichia coli is one of the most causative pathogen of urinary tract infection. urinary tract infections (utis) are the second most common cause of morbidity and remain a serious health concern among the clinicians. the severity of uti caused by uropathogenic e. coli (upec) is due to the expression of a wide spectrum of virulent factors such as adhesin coding operons. little is kn...

in order to develop a method for detecting and identification of theileria annulata, the specific primers from the major merozoite-piroplasm surface antigen sequence of theileria (tams1) were used to detect the t. annulata by nested-pcr technique. the assay provides a valuable tool for the identification of theileria annulata directly from clinical samples and enables determination of the infec...

background: computational identification of phylogenetic motifs helps to understand the knowledge about known functional features that includes catalytic site, substrate binding epitopes, and protein-protein interfaces. furthermore, they are strongly conserved among orthologs, indicating their evolutionary importance. the study aimed to analyze five candidate genes involved in type ii diabetic ...

background: newcastle disease virus (ndv) is the causativeagent of the newcastle disease (nd), a highly contagiousdisease in birds that causes significant economic losses to thepoultry industry worldwide. nd is endemic in iran and outbreaksare reported regularly in commercial poultry flocks and differentspecies of birds. objectives:the current study was carried outto characterize ndv based on p...

Phylogenetic analysis has shown that Escherichia coli is composed of four main phylogenetic groups (A, B1, B2 and D). Characterization of phylogenetic groups is of clinical interest, as group A and B1 generally associated with commensals, whereas most enteropathogenic isolates are assigned to group D, and group B2 is associated with extra-intestinal pathotype. One hundred E. coli strains recove...

Background and Aims: The Inclusion Body Hepatitis disease (IBH) is one of the prevalent illnesses in our country these days and reported from different regions of Iran. In addition to its fatality, the importance of this disease is disturbing the vaccination program in poultry, especially broiler chickens, against other diseases like infectious bursal disease (IBD) and Newcastle disease (ND). T...