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Researchers identify a complex that hands mimivirus control of protein synthesis in infected amoebae

Two intellectual property lawyers on why questions of AI inventorship and profit remain wide open

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CONCLUSIONS: Overall, the present study findings demonstrate that excessive sleep duration (over 10 h) is an independent predictor of increased risk of dementia among older Chinese adults. Conversely, maintaining a moderate sleep duration of 6 to 8 h appears to be a protective factor, correlating with a lower incidence of the condition.

Age-related macular degeneration (AMD) stands as a leading cause of blindness in the elderly, yet the fundamental aging processes that underpin its pathogenesis remain incompletely defined. The dysfunction of retinal pigment epithelial (RPE) cells is a central event in AMD, a process that shares key hallmarks with broader cellular aging, particularly the progressive decline in mitochondrial function. In this study, we investigated how a common environmental stressor-blue light-triggers a key...

ObjectivesTo examine the mediating role of activities of daily living (ADL) in the association between stroke and depressive symptoms, and to investigate whether moderate physical activity (MPA) moderates this mediation in older adults, using sex-stratified analyses.MethodsCross-sectional data from 31,137 participants (≥65 years) were analysed using wave eight of the Survey of Health, Ageing and Retirement in Europe. Depression, ADL limitations, stroke history and weekly frequency of MPA were...

Accurate diagnosis of dementia with Lewy bodies (DLB) remains challenging, with misdiagnosis potentially leading to harmful treatment decisions. DOPA decarboxylase (DDC) shows promise as a cerebrospinal fluid (CSF) biomarker for DLB and Parkinson's disease (PD), but quantitative assays are needed for its clinical implementation. Here we report on the development of two DDC immunoassays and the extensive clinical validation of DDC across three clinical cohorts (n = 740), one biologically defined...

Effective treatments for age-related chronic neurodegenerative diseases such as Alzheimer's disease remain limited, in part because the molecular drivers of cognitive decline are still not fully understood. Human genetic studies, together with detailed analysis of disease pathology, indicate that the immune system has an important influence on disease progression. Research to date has focused largely on microglia - specialized innate immune cells that reside within the central nervous system...

Understanding the development of midbrain dopaminergic (mesDA) neurons is essential for advancing cell replacement therapies for Parkinson's disease. In the developing ventral midbrain (VM), radial glia (Rgl) cells are the progenitors of mesDA neurons. However, distinct Rgl subtypes have recently been identified, and their individual roles are unclear. Here we analyze transcriptomic data from mouse and human VM Rgl to define their contributions to mesDA neuron development. We identify Rgl1 as...

Pregnancy and aging are associated with stress on the body and show multi-system physiological changes. We asked whether we can learn about aging from the changes in pregnancy. To do so, we analyzed weekly cross-sectional data on 70 lab tests from 300,000 pregnancies and 1.4 million non-pregnant females aged 20-89. Using a biological age model trained on non-pregnant females, we observed that pregnant females' apparent age dropped by 5 years in the first trimester, rose by 20 years toward...

Reducing CO(2) emissions throughout a product's life cycle, mainly encompassing four stages of raw materials extraction, processing, service, and end of life, is essential for carbon neutrality. Passive daytime radiative cooling coatings offer CO(2) reduction benefits, but primarily only during service stage. Life cycle assessment demonstrates maximized full life-cycle CO(2) reduction requires innovations in both raw materials extraction and service periods. Here, we develop a full life‑cycle...