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Protein phosphatase 2A (PP2A) regulates Tau hyperphosphorylation in Alzheimer's disease (AD). This study hypothesized that exercise increases adiponectin levels, activating PP2A to reduce Tau hyperphosphorylation and enhance hippocampal plasticity. The study utilized adiponectin knockout (Adipo^(-/-)) and hippocampal-specific PP2A knockdown (PP2A-KD) in mice with 3-week voluntary running and/or chronic stress to assess changes in Tau phosphorylation, adult neurogenesis, and cognitive...

Analysis of published papers on eight widely studied species suggests work on them is fading, but not everyone is worried

Single-cell spatial transcriptomes have demonstrated molecular and cellular diversity in the brain, but gene regulatory mechanisms underlying transcriptomic profiles and disease pathogenesis remain largely unknown in primates. Here we performed single-nucleus Assay for Transposase-Accessible Chromatin followed by sequencing (snATAC-seq) for ~1.6 million cells from 142 cortical regions of two male cynomolgus monkeys (Macaca fascicularis), and identified distinct chromatin accessibility profiles...

Losing track of personal experiences is a defining feature of Alzheimer disease (AD), arising from the spread of AD pathology through the brain circuits that support episodic memory. In this Review, we explore strategies to improve the function of episodic memory circuits in AD by leveraging the optimized use of neural resources. We introduce the circuit utilization framework, which builds on evidence that synaptic dysfunction, maladaptive responses and deficient adaptive plasticity contribute...

Perovskite solar cells tend to degrade much faster under day-night cycling conditions. One key reason lies in the periodic strain in perovskite film under cycling mode due to its soft crystal lattice nature. Here, we propose a dynamic reversible crosslinking strategy by introducing disulfide-mediated cross-linkable additive of 2-methacryloyloxyethyl-thioctate. Combining with carbon-carbon double bond, 2-methacryloyloxyethyl-thioctate crosslinks at grain boundaries at high temperature through...

Cyclophosphamide (CTX) is a first-line chemotherapeutic agent for various cancers but is associated with a significant risk of ovarian dysfunction, which may even progress to premature ovarian failure (POF). Granulosa cell senescence is a key phenotypic manifestation of this process. Hydroxychloroquine (HCQ) exerts anti-senescence effects in age-related diseases; however, its efficacy in preventing CTX-induced ovarian damage remains elusive. We aimed to verify the protective effect of HCQ using...

Aging is a major risk factor for the onset and progression of many neurodegenerative diseases. Inflammation is the body's natural defense mechanism against harmful stimuli. A growing body of research has highlighted the intricate relationship between aging and inflammation, with chronic low-grade inflammation, often referred to as "inflammaging," being a hallmark of the aging process. Cycloneolitsol (CL) is a C-32 cycloartane-type triterpene from Taxodium ascendens which has been reported to...

The present study aimed to investigate the effect of obstructive sleep apnea (OSA) and its treatment with continuous positive airway pressure (CPAP), the gold standard treatment for OSA on changes of telomere length and its associated mechanisms. In this mechanistic pilot study of a selective patient population (middle-aged men, BMI < 35 kg/m², moderate-severe OSA), a 6-month randomized, double-blind, and sham-controlled clinical trial was conducted (Clinical Trials: NCT04872816, April 29, 2021...

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Spinal cord injury patients are scrambling for access to the injection, but researchers say preliminary evidence is weak