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Risks and benefits of mirror life, AI, synthetic cells debated at anniversary of the landmark 1975 meeting

Findings contradict researchers’ own beliefs about how they would cite accused peers

CONCLUSIONS: Our findings suggest that 2 weeks of exposure to LPS is not sufficient to cause dopaminergic neuronal loss in LRRK2 G2019S KI mice but rather results in increased astrocyte activation, which can be ameliorated by caffeine.

Gene regulatory networks (GRNs) provide a global representation of how genetic/genomic information is transferred in living systems and are a key component in understanding genome regulation. Single-cell multiome data provide unprecedented opportunities to reconstruct GRNs at fine-grained resolution. However, the inference of GRNs is hindered by insufficient single omic profiles due to the characteristic high loss rate of single-cell sequencing data. In this study, we developed scMultiomeGRN, a...

A significant challenge in multi-omic geroscience research is the collection of high quality, fit-for-purpose biospecimens from a diverse and well-characterized study population with sufficient sample size to detect age-related changes in physiological biomarkers. The Dog Aging Project designed the precision cohort to study the mechanisms underlying age-related change in the metabolome, microbiome, and epigenome in companion dogs, an emerging model system for translational geroscience research....

Attentional states reflect the changing behavioral relevance of stimuli in one's environment, having important consequences for learning and memory. Supporting well-established cortical contributions, attentional states are hypothesized to originate from subcortical neuromodulatory nuclei, such as the basal forebrain (BF) and locus coeruleus (LC), which are among the first to change with aging. Here, we characterized the interplay between BF and LC neuromodulatory nuclei and their relation to...

Cancer is an age-related disease, but the interplay between cancer and aging is complex and their shared molecular drivers are deeply intertwined. This Review provides an overview of how different biological pathways affect cancer and aging, leveraging evidence mainly derived from animal studies. We discuss how genome maintenance and accumulation of DNA mutations affect tumorigenesis and tissue homeostasis during aging. We describe how age-related telomere dysfunction and cellular senescence...

Consumer-grade mobile devices are used by billions worldwide. Their ubiquity provides opportunities to robustly capture everyday cognition. 'Intuition' was a remote observational study that enrolled 23,004 US adults, collecting 24 months of longitudinal multimodal data via their iPhones and Apple Watches using a custom research application that captured routine device use, self-reported health information and cognitive assessments. The study objectives were to classify mild cognitive impairment...

CONCLUSION: Patient-reported adverse drug events are more prevalent in older co-morbid patients in Liaoning province. Female, numbers of daily drugs, fall history with 1 year and poor medication compliance were significantly and independently associated with adverse drug events. These findings may provide informative interventions for the medication management in elderly patients living with multimorbidity.

CONCLUSIONS: The VI-ACE-III showed good sensitivity and specificity for assessing dementia and MCI in Arabic-speaking elderly individuals with visual impairment (VI) in Egypt. Regular screening and interventions are crucial for managing and preventing the deterioration of cognitive dysfunction and vision impairment in the elderly population.

Cancer immunotherapy has revolutionized treatment paradigms, but its efficacy is often curtailed by T-cell exhaustion and the suppressive tumour microenvironment. Recent studies reveal a novel mechanism of T-cell demise termed ammonia-induced cell death (AICD), which significantly impacts effector CD8+ T-cell survival and function. This phenomenon arises from metabolic reprogramming during immune activation, wherein heightened glutamine metabolism leads to the accumulation of toxic ammonia...

The aim of this study is to investigate the association between retinal age gap and multimorbidity. Retinal age gap was calculated based on a previously developed deep learning model for 45,436 participants. The number of age-related conditions reported at baseline was summed and categorized as zero, one, or at least two conditions at baseline (multimorbidity). Incident multimorbidity was defined as having two or more age-related diseases onset during the follow-up period. Linear regressions...

Physical exercise has been associated with healthier aging trajectories, potentially preventing or mitigating age-related declines. This occurs through a complex, yet poorly characterized network of multi-organ interactions involving mitochondrial, inflammatory, and cell death/survival pathways. Here, we comprehensively evaluated the 12-week VIVIFRAIL multicomponent exercise protocol in physically frail (n = 16, mean age 81.4 ± 5.6) and robust (n = 50, mean-age 73.6 ± 4.7) old individuals....

The presence of senescent cells causes age-related pathologies since their removal by genetic or pharmacological means, as well as possibly by exercise, improves outcomes in animal models. An alternative to depleting such cells would be to rejuvenate them to promote their return to a replicative state. Here we report that treatment of non-growing senescent cells with low-frequency ultrasound (LFU) rejuvenates the cells for growth. Notably, there are 15 characteristics of senescent cells that are...

CONCLUSION: In wrist and ankle joints, the age-related decline in proprioception is limited to the sense of force, especially for low forces. This nonuniform decline in proprioception across proprioceptive senses and testing conditions could reflect a decline in the central processing of proprioceptive information.