We report the development of a real-time Invader assay combined with multiplex PCR (mPCR-RETINA), an SNP-based approach that can measure the allelic ratio in copy number variation (CNV) regions of a genome. RETINA monitors the real-time fluorescence intensity of each allele during the Invader assay and detects allelic asymmetries caused by genomic duplication/multiplication in heterozygous indi...

Background: Diarrheagenic Escherichia coli (DEC) is regarded as a great public health concern all around the world causing diarrhoea which can be transmitted through food chain. Aims: This study aimed to determine the contamination level and exact distribution rate of DEC in food products consumed by human. Methods: Seven hundred and t...

conclusions due to the low frequency of stec o157 and the high susceptibility rates of the isolates to the tested antibiotics in this study, stec o157 has not become a major problem in tabriz yet, but comprehensive microbiological surveillance programs that provide early warning and limit the scale of possible outbreaks would be essential. results of the isolates 11 (5.5%) were sorbitol-negativ...

spinal muscular atrophy (sma) is an autosomal recessive neuromuscular disorder caused by homozygous deletion of the survival motor neuron gene 1 (smn1) in more than 90% of patients. according to the age of onset and severity of the disease, sma is classified into three groups: type i (severe), type ii (intermediate) and type iii (mild). as reported, the smn2 gene, centromeric copy gene, showed ...

Analysis of Y chromosome haplogroups, defined by single nucleotide polymorphisms (SNPs), is now a standard approach for study of the origin of human populations and measurement of the variability among them. It is also a new forensic tool, because it may allow determination of the origin of any male sample of interest. We have used a strategy for rapid, simple and inexpensive Y chromosome SNP t...

We have modified an existing semi-nested multiplex polymerase chain reaction (PCR) by adding one Plasmodium knowlesi-specific nested PCR, and validated the latter against laboratory and clinical samples. This new method has the advantage of being relatively affordable in low resource settings while identifying the five human Plasmodium species with a three-step PCR.

Outbreaks of Bacillus anthracis in animals are repeatedly reported in the Islamic Republic of Iran. In this study soil samples were analysed from endemic regions of the country, and B. anthracis isolates were identified by classical bacteriological and biochemical methods. A multiplex polymerase chain reaction (PCR) assay was also developed as an alternative for identification of isolates, and ...