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http://dx.doi.org/10.1111/j.1553-2712.2009.00553.x | DOI Listing |
Mol Biol Evol
January 2025
Department of Botany and Beaty Biodiversity Centre, University of British Columbia, Canada.
The degree to which evolution repeats itself has implications regarding the major forces driving evolution and the potential for evolutionary biology to be a predictive (versus solely historical) science. To understand the factors that control evolutionary repeatability, we experimentally evolved four replicate hybrid populations of sunflowers at natural sites for up to 14 years and tracked ancestry across the genome. We found that there was very strong negative selection against introgressed ancestry in several chromosomes, but positive selection for introgressed ancestry in one chromosome.
View Article and Find Full Text PDFClin Neuropsychol
January 2025
Departments of Neurology and Anatomy & Neurobiology, Boston University Chobanian & Avedisian School of Medicine, Boston University CTE and Alzheimer's Disease Research Centers, Boston, MA, USA.
Objective: The long-recognized association of brain injury with increased risk of dementia has undergone significant refinement and more detailed study in recent decades. Chronic traumatic encephalopathy (CTE) is a specific neurodegenerative tauopathy related to prior exposure to repetitive head impacts (RHI). We aim to contextualize CTE within a historical perspective and among emerging data which highlights the scientific and conceptual evolution of CTE-related research in parallel with the broader field of neurodegenerative disease and dementia.
View Article and Find Full Text PDFGlob Public Health
December 2025
Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada.
The Canadian public healthcare system faces significant challenges in performance. While the formal healthcare system addresses funding, access and policy, there is a critical need to prioritise the informal system of community-oriented networks. This integration aligns with the World Health Organization's primary health care approach, emphasising a whole-of-society strategy for health equity.
View Article and Find Full Text PDFJ Anat
January 2025
Bonn Institute of Organismal Biology, Paleontology, University of Bonn, Bonn, Germany.
Current understanding of the histology of the dermoskeleton of tetrapods comes from fossilized and recent remains of skulls, osteoderms, carapace, plastron and other postcranial material which were always investigated using linear cross polarized light (LCPL) microscopy. The pectoral girdle of vast majority of non-amniote tetrapods, including temnospondyls evolved large ventrally located dermal bones- the interclavicle and a pair of clavicles. Despite that, there is a lack of information about the bone tissue structure from these postcranial dermal bones.
View Article and Find Full Text PDFACS Pharmacol Transl Sci
January 2025
Department of Medicinal Chemistry and Institute for Translational Neuroscience, University of Minnesota, Minneapolis, Minnesota 55455, United States.
Opioid agonist ligands bind opioid receptors and stimulate downstream signaling cascades for various biological processes including pain and reward. Historically, before cloning the receptors, muscle contraction assays using isolated organ tissues were used followed by radiolabel ligand binding assays on native tissues. Upon cloning of the opioid G protein-coupled receptors (GPCRs), cell assays using transfected opioid receptor DNA plasmids became the standard practice including S-GTPγS functional and cAMP based assays.
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