The 16S rDNA polymerase chain reaction (PCR)-denaturing gradient gel electrophoresis (DGGE) and sequencing method has been demonstrated to be valuable in detecting pathogens in the blood of patients suffering from fever or neutropenia. However, its use in the diagnosis of neonatal late‑onset septicemia (LOS) has not yet been reported. The aim of the present study was to investigate the efficien...

DNA corresponding to 16S rDNA and the 165-23S rDNA intergenic spacer (ITS) from 22 reference strains of acetic acid bacteria, representing the diversity of the family Acetobacteraceae, and 24 indigenous acetic acid bacteria isolated from wine fermentations were analysed by PCR-RFLP. Frateuria aurantia LMG 1558T and Escherichia coli ATCC 11775T were included as outgroups. PCR-amplified products ...

tarkhineh is one of the traditional foods in iran and a rich source of probiotic bacteria. the objective of this study was to identify the probiotic bacteria isolated from tarkhineh using 16s rrna gene sequencing and molecular typing with repetitive extragenic palindromic–pcr (rep-pcr). in total, 20 different bacteria were isolated from traditional dairy products and tarkhineh. molecular identi...

Nucleic acid sequences of Mycobacterium leprae were detected using gene probes hybridizing with targeting ribosomal RNA (16S rRNA), ribosomal DNA (16S rDNA) and gene amplification techniques (PCR) in skin lesion of paediatric leprosy patients and the effect of treatment on the by these methods. Eighty paediatric leprosy patients were included in the study. Most cases (79%) were between 9 and 16...

"Tropheryma whippelii"-associated infections are usually confirmed histopathologically by using light microscopy. PCR assays targeting the 16S rRNA gene (16S rDNA) of "T. whippelii" are increasingly being applied for this purpose. Compared to microscopic analysis, PCR seems to be more sensitive, as indicated by the fact that several cases of Whipple's disease with negative histopathological fin...

background :   vibrio species including v. cholera , v. mimicus , v. parahaemolyticus , and v. vulnificus may cause gastrointestinal diseases after seafood consumption, and wound infections in swimmers and fishermen after exposing to seawater. this study determined the prevalence of the four vibrio species in tonkabon and ramsar recreational beach water (approximately 200 meter far from the pla...

BACKGROUND Cases of infective endocarditis (IE) require prompt etiological diagnosis for effective treatment. Molecular methods can aid in rapid and reliable diagnosis of culture-negative IE cases. We evaluated the utility of 16S rDNA PCR and sequencing in determining the causative agents of IE in valve tissues, especially when specimens were obtained after initiation of antimicrobial therapy. ...

Using polymerase chain reaction (PCR), we examined 16S ribosomal DNA (rDNA) of Helicobacter species in liver tissue specimens obtained from 15 patients with hepatocellular carcinoma. Sixty percent (9 of 15) of these specimens were found to be positive for Helicobacter species. Four 16S rDNA fragments from positive PCR samples were directly sequenced. By sequence comparison, all were found to be...