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Mapping quantitative trait loci regions associated with Marek's disease on chicken autosomes by means of selective DNA pooling.
Sci Rep
December 2024
Hy-Line International, 2583 240th St, PO Box 310, Dallas Center, 50063, IA, USA.
Marek's Disease (MD), which can result in neurological damage and tumour formation, has large effects on the economy and animal welfare of the poultry industry worldwide. Previously, we mapped autosomal MD QTL regions (QTLRs) by individual genotyping of an F population from a full-sib advanced intercross line. We further mapped MD QTLRs on the chicken Z chromosome (GGZ) using the same F population, and by selective DNA pooling (SDP) of 8 elite egg production lines.
View Article and Find Full Text PDFNeutral drift upon threshold-like selection promotes variation in antibiotic resistance phenotype.
Nat Commun
December 2024
Michael Smith Laboratories, University of British Columbia, Vancouver, V6T 1Z4, BC, Canada.
Heritable phenotypic variation plays a central role in evolution by conferring rapid adaptive capacity to populations. Mechanisms that can explain genetic diversity by describing connections between genotype and organismal fitness have been described. However, the difficulty of acquiring comprehensive data on genotype-phenotype-environment relationships has hindered the efforts to explain how the ubiquitously observed phenotypic variation in populations emerges and is maintained.
View Article and Find Full Text PDFA novel de novo GABRA2 gene missense variant causing developmental epileptic encephalopathy in a Chinese patient.
Ann Clin Transl Neurol
December 2024
Department of Pediatrics, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, P. R. China.
Background: Variants in the GABRA2 gene, which encodes the α2 subunit of the γ-aminobutyric acid A receptor, have been linked to a rare form of developmental and epileptic encephalopathy (DEE) referred to as DEE78. Only eight patients have been reported globally. This study presents the clinical presentation and genetic analysis of a Chinese family with a child diagnosed with DEE78, due to a novel GABRA2 variant.
View Article and Find Full Text PDFMolecular epidemiology of invasive group B Streptococcus in South Africa, 2019-2020.
J Infect Dis
December 2024
Centre for Respiratory Diseases and Meningitis, National Institute for Communicable Diseases, a division of the National Health Laboratory Service, Johannesburg, South Africa.
Background: Group B Streptococcus (GBS) is a leading cause of neonatal meningitis and sepsis and an important cause of disease in adults. Capsular polysaccharide and protein-based GBS vaccines are currently under development.
Methods: Through national laboratory-based surveillance, invasive GBS isolates were collected from patients of all ages between 2019 and 2020.
Forty-hertz sensory entrainment impedes kindling epileptogenesis and reduces amyloid pathology in an Alzheimer disease mouse model.
Epilepsia
December 2024
Department of Neuroscience, School of Translational Medicine, Monash University, Melbourne, Victoria, Australia.
Objective: The 5xFAD mouse model of Alzheimer disease (AD) recapitulates amyloid-beta (Aβ) deposition and pronounced seizure susceptibility observed in patients with AD. Forty-hertz audiovisual stimulation is a noninvasive technique that entrains gamma neural oscillations and can reduce Aβ pathology and modulate glial expression in AD models. We hypothesized that 40-Hz sensory stimulation would improve seizure susceptibility in 5xFAD mice and this would be associated with reduction of plaques and modulation of glial phenotypes.
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