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Two decades of bacterial ecology and evolution in a freshwater lake.
Nat Microbiol
January 2025
Department of Integrative Biology, The University of Texas at Austin, Austin, TX, USA.
Ecology and evolution are considered distinct processes that interact on contemporary time scales in microbiomes. Here, to observe these processes in a natural system, we collected a two-decade, 471-metagenome time series from Lake Mendota (Wisconsin, USA). We assembled 2,855 species-representative genomes and found that genomic change was common and frequent.
View Article and Find Full Text PDFTiming of Alzheimer's disease biomarker progressions: A two-decade observational study from the Alzheimer's Disease Neuroimaging Initiative (ADNI).
Alzheimers Dement
December 2024
Department of Veterans Affairs Medical Center, Northern California Institute for Research and Education (NCIRE), San Francisco, California, USA.
Introduction: Alzheimer's Disease Neuroimaging Initiative (ADNI) has been pivotal in identifying and refining Alzheimer's disease (AD) biomarkers for clinical trials. This study leverages longitudinal data from participants who have progressed to amyloid-positivity during their study participation to track evolution of biomarkers and cognitive function.
Methods: We modeled AD biomarker (positron emission tomography [PET], structural, cerebrospinal fluid [CSF], cognition) trajectories before and after observed amyloid-positivity onset time to detect time at which each biomarker had detectable trajectory changes.
Genome sequences of seven isolates from feedlots in Oklahoma and California.
Microbiol Resour Announc
November 2024
Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan, USA.
This report describes the genome sequences of seven isolates recovered from feedlot cattle. These genome sequences will enhance our understanding of evolution and antimicrobial resistance (AMR)-associated genes they carried over a two-decade span.
View Article and Find Full Text PDFLong-term persistence of diverse clones shapes the transmission landscape of invasive Listeria monocytogenes.
Genome Med
September 2024
University at Albany, State University of New York, Albany, NY, USA.
Background: The foodborne bacterium Listeria monocytogenes (Lm) causes a range of diseases, from mild gastroenteritis to invasive infections that have high fatality rate in vulnerable individuals. Understanding the population genomic structure of invasive Lm is critical to informing public health interventions and infection control policies that will be most effective especially in local and regional communities.
Methods: We sequenced the whole draft genomes of 936 Lm isolates from human clinical samples obtained in a two-decade active surveillance program across 58 counties in New York State, USA.
How interacting anthropogenic pressures alter the plasticity of breeding time in two common songbirds.
J Anim Ecol
July 2024
CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France.
Phenological adjustment is the first line of adaptive response of vertebrates when seasonality is disrupted by climate change. The prevailing response is to reproduce earlier in warmer springs, but habitat changes, such as forest degradation, are expected to affect phenological plasticity, for example, due to loss of reliability of environmental cues used by organisms to time reproduction. Relying on a two-decade, country-level capture-based monitoring of common songbirds' reproduction, we investigated how habitat anthropization, here characterized by the rural-urban and forest-farmland gradients, affected the average phenology and plasticity to local temperature in two common species, the great tit Parus major and the blue tit Cyanistes caeruleus.
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