98%
921
2 minutes
20
High-throughput sequencing of bile and feces from two pigs experimentally infected with human hepatitis E virus (HEV) of genotype 3f revealed the same full-length consensus sequence as in the human sample. Twenty-nine percent of polymorphic sites found in HEV from the human sample were conserved throughout the infection of the heterologous host. The interspecies transmission of HEV quasispecies is the result of a genomic negative-selection pressure on random mutations which can be deleterious to the viral population. HEV intrahost nucleotide diversity was found to be in the lower range of other human RNA viruses but correlated with values found for zoonotic viruses. HEV transmission between humans and pigs does not seem to be modulated by host-specific mutations, suggesting that adaptation is mainly regulated by ecological drivers.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3372222 | PMC |
http://dx.doi.org/10.1128/JVI.06843-11 | DOI Listing |
J Agric Food Chem
September 2025
School of Chemical Engineering and Technology, Zhengzhou University, Zhengzhou 450001, China.
d-Amino acid oxidase from (DAAO) is valuable for pharmaceutical and chemical synthesis due to its high enantioselectivity, but its poor thermostability limits extensive application. This study proposed a synergistic strategy of "sequence consensus design coupled with structure modification" to enhance DAAO thermostability. Through homologous sequence analysis and greedy algorithm-based optimization, a triple mutant M3 (S18T/V7I/Y132F) was obtained, showing a 3.
View Article and Find Full Text PDFJ Occup Environ Hyg
September 2025
Division of Biology, Chemistry, and Materials Science, Office of Science and Engineering Laboratories, US Food and Drug Administration (FDA), Oak Ridge, Tennessee.
This work assesses the current characterization framework of single-use personal protective equipment (PPE) per recognized consensus standards and presents a novel quantitative approach to refining characterization of barrier materials and predicting PPE performance. Scanning electron microscopy (SEM) and image analysis software (Diameter J) were used to examine the microscopic fiber and pore structure of filter layers of surgical N95 filtering facepiece respirators, before and after exposure to chemicals used in decontamination modalities (vaporized hydrogen peroxide or ozone). The effect of porosity on penetration was assessed by bacterial filtration efficiency (BFE) testing.
View Article and Find Full Text PDFNAR Genom Bioinform
September 2025
Department of Human Genetics and Genomic Medicine, University of Southampton, Southampton, SO16 6YD, UK.
Whole exome sequencing (WES) is a well-established tool for clinical diagnostics, is more cost-effective and faster to analyse than whole genome sequencing and has been implemented to uplift diagnostic rates in human disease. However, challenges remain to achieve comprehensive and uniform coverage of targets, and high sensitivity and specificity. Differences in genomic target regions and exome capture mechanism between kits may lead to differences in overall coverage uniformity and capture efficiency.
View Article and Find Full Text PDFJ Magn Reson Imaging
September 2025
Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan.
Background: Automated cardiac MR segmentation enables accurate and reproducible ventricular function assessment in Tetralogy of Fallot (ToF), whereas manual segmentation remains time-consuming and variable.
Purpose: To evaluate the deep learning (DL)-based models for automatic left ventricle (LV), right ventricle (RV), and LV myocardium segmentation in ToF, compared with manual reference standard annotations.
Study Type: Retrospective.
J Membr Biol
September 2025
Protein Biology Lab, Department of Zoology, University of Delhi, Delhi, India.
Chlamydia trachomatis is an obligate intracellular Gram-negative pathogen that causes sexually transmitted infections (STIs) and trachoma. Current interventions are limited due to the widespread nature of asymptomatic infections, and the absence of a licensed vaccine exacerbates the challenge. In this study, we predicted outer membrane β-barrel (OMBB) proteins and designed a multi-epitope vaccine (MEV) construct using identified proteins.
View Article and Find Full Text PDF