Real-time PCR can rapidly identify Mycobacterium tuberculosis in paraffin-embedded tissue in the absence of microbiological culture. In a comparison of single-copy and multicopy PCR targets in 70 tissue samples, the sensitivities were 26% and 54%, respectively, with 100% specificity. Sensitivity was 75% for newer samples and was not decreased for acid-fast bacillus (AFB) stain-negative specimens.

Paratuberculosis (John's disease) is infectious and chronically progressive granulomatous disease which affects domestic and wild ruminants. The causative agent is Mycobacterium avium paratuberculosis (MAP), a slow growing mycobactin dependent acid-fast bacillus. We investigated the detection and frequency of MAP in apparently healthy dromedary and Bactrian camels by insertion sequence 900 (IS9...

Background: The prevailing methods for the genomic DNA extraction of Sclerotium rolfsii from its mycelium mat is often time consuming and yields poor quality quantity owing to presence outrageous magnitude mucilage polysaccharides. Methods: A new fast track method isolation resting structure (sclerotia) S. by modifying CTAB deprived supplementation proteinase K has been standardized. Result: pr...

clostridium perfringens is a part of the microflora of soil, and many reports have revealed the widespread occurrence of this organism in raw and processed foods. c. perfringens is classified into five types (types a to e), depending upon their ability to express alpha, beta, epsilon, and iota toxins in this study, a multiplex polymerase chain reaction (pcr) assay was developed for detection of...

Understanding the strategies used by pathogens to infect, survive, and proliferate in their hosts requires the identification of virulence factors. We developed PCR-based screening of targeted mutants to facilitate quick, simultaneous detection of multiple novel bacterial virulence genes. Based on direct PCR screening of pooled targeted mutants, this approach provides a fast and sensitive measu...

It is clinically important to be able to detect influenza A/H1N1 virus using a fast, portable, and accurate system that has high specificity and sensitivity. To achieve this goal, it is necessary to develop a highly specific primer set that recognizes only influenza A viral genes and a rapid real-time PCR system that can detect even a single copy of the viral gene. In this study, we developed a...

Introduction: The most common cutaneous fungal infections are caused by dermatophyte fungi such as Microsporum, Trichophyton, and Epidermophyton. In this study, the epidemiologic trends predominant organisms causing dermatophytosis in Urmia, Northwest Iran, were identified.Aims objectives: To get better perception of distribution authors studied identification isolated dermatophytes from human ...

Background and Purpose: The epidemiological alteration in the distribution of Candida species, as well as the significantly increasing trend of either intrinsic or acquired resistance of some of these fungi highlights the need for a reliable method for the identification of the species. Polymerase chain reaction (PCR) is one of the methods facilitating the quick and precise identification of Ca...

objective :cryptosporidiosis is one of the most important parasitic infections in iran which causes diarrhea in humans and animals. the identification of the cryptosporidium species among humans is necessary. this study aims to identify species of cryptosporidium isolated from patients that referred to three hospitals in tehran based on the 18s rrna gene by nested pcr-rflp assay. ‎methods :in t...

1 GEPAMOL, Centro de Investigaciones Biomédicas, Universidad del Quindío, Armenia, Colombia 2 Maestría en Microbiología, Universidad de Cartagena, Cartagena de Indias, Colombia 3 Secretaría de Salud, Armenia, Colombia Abstract Introduction: PCR detection offers a good opportunity to obtain fast results which is a priority in tuberculosis control programs. Objectives: We assayed an in-house PCR ...