Use of antisense oligonucleotide probes (OP) for detection and genotyping of Shiga-like toxin producing Escherichia coli (SLTEC) was evaluated. Based on published deoxyribonucleic acid (DNA) sequences of the A subunits of Shiga-like toxin (SLT) I and II genes, three synthetic antisense OP were constructed (OP-1, -2 and -3). Their use for detection and genotyping of SLTEC was evaluated and the results were compared to those obtained using cloned toxin-gene probe fragments. Both the OP-1 and OP-2 hybridized with all 69 SLT-I and II producing strains. Furthermore, the OP-1 hybridized only with all 18 SLT-I-only producing strains, and the OP-2 hybridized only with all 48 SLT-II-only producing strains. OP-3, a pool of four OP, detected all SLTEC strains regardless of toxin genotype. None of the OP hybridized to any of the 91 SLT-negative strains. These results demonstrate the three OP to be unique reagents for SLTEC epidemiological studies.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.4315/0362-028X-57.5.399 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Comprehensive Hematological and molecular Characterization of hemoglobin Hekinan [α27(B8)Glu→Asp(α1), :c.84G > T] in a Large Thai cohort.
Hematology
December 2025
Division of Hematology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, and King Chulalongkorn Memorial Hospital, Thai Red Cross, Bangkok, Thailand.
Background: Hemoglobin (Hb) Hekinan is a prevalent α-globin variant frequently missed in thalassemia screening centers using high-performance liquid chromatography (HPLC) or capillary electrophoresis. This study aims to investigate the hematological and molecular characteristics of Hb Hekinan in a large cohort.
Methods: Hb variants were identified using isoelectric focusing (IEF) and HPLC.
A chromosome-level, haplotype-resolved genome assembly and annotation for the Eurasian minnow (Leuciscidae: Phoxinus phoxinus) provide evidence of haplotype diversity.
Gigascience
January 2025
Leibniz Institute for the Analysis of Biodiversity Change, Museum Koenig Bonn, 53113 Bonn, Germany.
Background: In this study, we present an in-depth analysis of the Eurasian minnow (Phoxinus phoxinus) genome, highlighting its genetic diversity, structural variations, and evolutionary adaptations. We generated an annotated haplotype-phased, chromosome-level genome assembly (2n = 50) by integrating high-fidelity (HiFi) long reads and chromosome conformation capture data (Hi-C).
Results: We achieved a haploid size of 940 megabase pairs (Mbp) for haplome 1 and 929 Mbp for haplome 2 with high scaffold N50 values of 36.
Co-infection of human papillomavirus genotypes and Epstein-Barr virus in tumors of the oral cavity and oropharynx: a retrospective study in Northeastern Mexico.
IJID Reg
March 2025
Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México.
Objectives: This study aimed to determine the prevalence and genotyping of human papillomavirus (HPV) and to assess co-infection with Epstein-Barr virus (EBV) in oral cavity and oropharyngeal cancers (OC and OPC) specimens from patients at a tertiary care hospital in Northeastern Mexico.
Methods: Formalin-fixed and paraffin-embedded tumor specimens from 41 patients with OC and OPC were evaluated. HPV detection and genotyping were performed using the Ampliquality HPV-Type Express kit.
Norovirus-associated diarrhea and asymptomatic infection in children aged under 4 years: a community-cohort study in the Philippines.
IJID Reg
March 2025
Department of Virology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Objectives: This study aimed to estimate the incidence of norovirus (NoV)-associated diarrhea and asymptomatic infections in children under 4 years of age and identify the genotypes of multiple NoV infections.
Methods: A community-based cohort study was conducted in Tarlac, Philippines. Children aged 0-2 years were followed up for 2 years.
Association between genetic variants in hsa-miR-27a and hsa-miR-146a genes and male infertility.
J Med Biochem
November 2024
university of belgrade, faculty of biology, centre for human molecular genetic.
Background: miRNAs have enormous potential to be used as diagnostic and prognostic markers as well as therapeutic targets in male infertility and diseases of the reproductive system. This study aimed to investigate the association between the two functional genetic variants in the hsa-miR27a (rs2910164) and hsa-miR-146a gene (rs895819) and male infertility in North Macedonian population, as well as to test their association with the values of major seminal parameters.
Methods: The case group included in this study comprised 158 men initially diagnosed with idiopathic male infertility.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!