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Fire in the tree: The origin and distribution of fire-adapted traits within conifers and their influence on speciation rates across the conifer phylogeny.
Am J Bot
January 2025
Department of Biology, University of Idaho, Moscow, 83844, Idaho, USA.
Premise: Considering rapidly changing fire regimes due to anthropogenic disturbances to climate and fuel loads, it is crucial to understand the underpinnings driving fire-adapted trait evolution. Among the oldest lineages affected by fire is Coniferae. This lineage occupies a variety of fire prone and non-fire prone habitats across all hemispheres and has four fire-adapted traits: (1) thick bark; (2) serotiny; (3) seedling grass stage; and (4) resprouting ability.
View Article and Find Full Text PDFNuclear Cardiology Surrogate Biomarkers in Clinical Trials.
J Nucl Med
January 2025
Departments of Medicine (Division of Artificial Intelligence in Medicine), Imaging, and Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California;
Nuclear cardiology offers a diverse range of imaging tools that provide valuable insights into myocardial perfusion, inflammation, metabolism, neuroregulation, thrombosis, and microcalcification. These techniques are crucial not only for diagnosing and managing cardiovascular conditions but also for gaining pathophysiologic insights. Surrogate biomarkers in nuclear cardiology, represented by detectable imaging changes, correlate with disease processes or therapeutic responses and can serve as endpoints in clinical trials when they demonstrate a clear link with these processes.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Institute of Neurosciences, L'Hospitalet de Llobregat, Barcelona, Spain.
Background: The increased vulnerability of Alzheimer's disease patients to severe SARS-CoV-2 infection raises crucial concerns, especially with the potential transition of the COVID-19 pandemic to an endemic state. Given the rising prevalence of Alzheimer's in an aging world-wide population, elucidating whether SARS-CoV-2 infection may induce or accelerate neurodegeneration becomes imperative.
Method: To investigate the neurodegenerative effects of SARS-CoV-2 infection, we generated brain organoids using human induced pluripotent stem lines from one non-demented control, one with sporadic Alzheimer's, and one with familial Alzheimer's.
Background: UFMylation is an understudied ubiquitin-like post-translational modification (PTM). Like ubiquitin, UFM1 is conjugated to substrates via a catalytic cascade involving a UFM1-specific E1 (UBA5), E2 (UFC1), and an E3 ligase complex (UFL1, DDRGK1 and CDK5RAP3). UFMylation is reversible, and this is mediated by UFSP2.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Columbia University Irving Medical Center, New York, NY, USA.
Background: Genetic variations have emerged as crucial players in the etiology of Alzheimer's disease (AD), and they serve for a better understanding of the disease mechanisms; yet the specific roles of these genetic variants remain uncertain. Animal models with reminiscent disease pathology could uncover previously uncharacterized roles of these genes. Therefore, we generated zebrafish models for AD variants to analyze the in depth molecular and biological functions of these variants.
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