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Trends of genetic contributions on epigenetic clocks and related methylation sites with aging: A population-based adult twin study

1 year 1 month ago
Several crucial acceleration periods exist during aging process. Epigenetic clocks, serving as indicators of aging, are influenced by genetic factors. Investigating how the genetic contributions on these clocks change with age may provide novel insights into the aging process. In this study, based on 1084 adult twins from the Chinese National Twin Registry (CNTR), we established structural equation models (SEMs) to evaluate the trends in genetic influence with aging for epigenetic clocks, which...
Xuanming Hong

Metabolomic characterization of unintentional weight loss among community-dwelling older Black and White men and women

1 year 1 month ago
This study aims to understand the metabolic mechanisms of unintentional weight loss in older adults. We investigated plasma metabolite associations of subsequent weight change over 2 years in 1536 previously weight stable participants (mean age 74.6 years, 50% women, 35% Black) from the Health, Aging and Body Composition (Health ABC) Study. Multinomial logistic regressions were used to examine associations of the 442 metabolites with weight loss with/without an intention and weight gain >3%...
Shanshan Yao

Brain-wide alterations revealed by spatial transcriptomics and proteomics in COVID-19 infection

1 year 1 month ago
Understanding the pathophysiology of neurological symptoms observed after severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) infection is essential to optimizing outcomes and therapeutics. To date, small sample sizes and narrow molecular profiling have limited the generalizability of findings. In this study, we profiled multiple cortical and subcortical regions in postmortem brains of patients with coronavirus disease 2019 (COVID-19) and controls with matched pulmonary pathology (total...
Ting Zhang

Brain-wide alterations revealed by spatial transcriptomics and proteomics in COVID-19 infection

1 year 1 month ago
Understanding the pathophysiology of neurological symptoms observed after severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) infection is essential to optimizing outcomes and therapeutics. To date, small sample sizes and narrow molecular profiling have limited the generalizability of findings. In this study, we profiled multiple cortical and subcortical regions in postmortem brains of patients with coronavirus disease 2019 (COVID-19) and controls with matched pulmonary pathology (total...
Ting Zhang

Sequence modeling and design from molecular to genome scale with Evo

1 year 1 month ago
Science, Volume 386, Issue 6723, November 2024.
Eric Nguyen, Michael Poli, Matthew G. Durrant, Brian Kang, Dhruva Katrekar, David B. Li, Liam J. Bartie, Armin W. Thomas, Samuel H. King, Garyk Brixi, Jeremy Sullivan, Madelena Y. Ng, Ashley Lewis, Aaron Lou, Stefano Ermon, Stephen A. Baccus, Tina…

A glutamine metabolic switch supports erythropoiesis

1 year 1 month ago
Science, Volume 386, Issue 6723, November 2024.
Junhua Lyu, Zhimin Gu, Yuannyu Zhang, Hieu S. Vu, Christophe Lechauve, Feng Cai, Hui Cao, Julia Keith, Valentina Brancaleoni, Francesca Granata, Irene Motta, Maria Domenica Cappellini, Lily Jun-Shen Huang, Ralph J. DeBerardinis, Mitchell J. Weiss, Min Ni…