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Freshwater waterways, and species that depend on them, are threatened by urbanisation and the consequences of the urban stream syndrome. In south-east Queensland, Australia, little is known about the impacts of the urban stream syndrome on the platypus (), meaning that populations cannot be adequately managed by conservation practitioners. The aim of this study was to determine how habitat and environmental variables, related to the urban stream syndrome, influenced platypus distribution across this region.
View Article and Find Full Text PDFPhotochemical Stabilization of Self-Assembled Spherical Nucleic Acids.
Small
January 2025
Department of Chemistry, McGill University, 801, Sherbrooke St. West, Montreal, QC, H3A 0B8, Canada.
Oligonucleotide therapeutics, including antisense oligonucleotides and small interfering RNA, offer promising avenues for modulating the expression of disease-associated proteins. However, challenges such as nuclease degradation, poor cellular uptake, and unspecific targeting hinder their application. To overcome these obstacles, spherical nucleic acids have emerged as versatile tools for nucleic acid delivery in biomedical applications.
View Article and Find Full Text PDFSeroepidemiology, molecular detection, and isolation attempts of Toxoplasma gondii in dairy goats from Rio de Janeiro, Brazil.
Vet Res Commun
January 2025
Laboratório de Protozoologia, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brasil.
Goats are the one of the most susceptible domestic species to toxoplasmosis affecting animal health and production. The present study aimed to determine the seroprevalence of T. gondii infection in dairy goats from Rio de Janeiro, Brazil, as well as to evaluate associated risk factors, parasitic DNA detection in raw goat milk samples, and attempts to isolate the parasite from raw goat milk samples.
View Article and Find Full Text PDFThe nuclear matrix stabilizes primed-specific genes in human pluripotent stem cells.
Nat Cell Biol
January 2025
Department of Systems Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, China.
The nuclear matrix, a proteinaceous gel composed of proteins and RNA, is an important nuclear structure that supports chromatin architecture, but its role in human pluripotent stem cells (hPSCs) has not been described. Here we show that by disrupting heterogeneous nuclear ribonucleoprotein U (HNRNPU) or the nuclear matrix protein, Matrin-3, primed hPSCs adopted features of the naive pluripotent state, including morphology and upregulation of naive-specific marker genes. We demonstrate that HNRNPU depletion leads to increased chromatin accessibility, reduced DNA contacts and increased nuclear size.
View Article and Find Full Text PDFHeating up three cold cases in Norway using investigative genetic genealogy.
Forensic Sci Int Genet
December 2024
Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway.
With the advent of commercial DNA databases, investigative genetic genealogy (IGG) has emerged as a powerful forensic tool, rivalling the impact of STR analyses, introduced four decades ago. IGG has been frequently applied in the US and tested in other countries, but never in Norway. Here, we apply IGG to three cold criminal cases and successfully identify the donor of the DNA in two of these cases.
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