Aggregator
MicroRNAs in neuroplasticity: a comprehensive review of mechanisms and therapeutic strategies for neurodegenerative diseases
MicroRNAs (miRNAs) have emerged as key regulators of neuroplasticity, influencing essential processes such as neurogenesis, synaptogenesis, and neuroinflammatory responses. This review provides a comprehensive overview of the general roles of miRNAs in neuroplasticity and synthesizes recent insights from both preclinical and clinical studies, including transcriptomic analyses and miRNA profiling, to elucidate the molecular mechanisms by which these miRNAs modulate neuronal function. We have...
Nucleoside reverse transcriptase inhibitors as a therapeutic opportunity to counteract inflammaging and age-related diseases: New evidence from epidemiological data
Nucleoside Reverse Transcriptase Inhibitors (NRTIs), widely used to treat HIV and hepatitis B, have recently been shown to possess anti-inflammatory properties by inhibiting inflammasome activation. Epidemiological studies have revealed a significantly reduced incidence of age-related diseases, such as Alzheimer's disease (AD) and type 2 diabetes mellitus (T2DM), among patients chronically treated with NRTIs, but not with other classes of antiretroviral drugs. In this short review, we explore...
Interplay of genetic predisposition, plasma metabolome and Mediterranean diet in dementia risk and cognitive function
Alzheimer's disease (AD) and AD-related dementias (AD/ADRD) have a substantial genetic basis, with APOE4 homozygotes increasingly recognized as a distinct genetic subtype. To identify genotype-specific metabolic pathways and modifiable risk factors, we integrated genetic, plasma metabolomic and dietary data from 4,215 women and 1,490 men in prospective cohorts. Here we show that the associations of 57 metabolites with dementia risk varied by APOE4 genotype or other AD/ADRD risk variants. For...
Chronic inflammation and cognitive frailty in older adults: A narrative review
Cognitive Frailty (CF) is a clinical syndrome characterized by the co-occurrence of physical frailty and cognitive impairment in the absence of dementia. This geriatric condition has emerged as a significant contributor to compromised health status and diminished quality of life among aging populations, yet its underlying pathological mechanisms remain incompletely elucidated. Chronic low-grade inflammation, recognized as a hallmark of biological aging, has been implicated in the pathogenesis of...
Effects of Music Imaging on Older Adults With Mild Cognitive Impairment: A Randomized Controlled Trial
CONCLUSIONS AND IMPLICATIONS: This study revealed the beneficial effects of music imaging on cognitive function, neuropsychiatric symptoms, sleep quality, and quality of life among older adults with MCI. These findings support the application of music imaging among older adults with MCI with the aim of slowing cognitive decline, improving symptoms, and promoting healthy aging. [The study was registered with the China Clinical Trial Registry (ChiCTR2400081469) and approved by the Ethics Committee...
Frequent Emergency Medical Services Utilization Among Older Patients: Exploration and Automatic Identification Using Natural Language Processing
CONCLUSION AND IMPLICATIONS: An NLP-based model using EMS text data could improve the identification of frequent users. Integration of such tools into prehospital care systems may support earlier identification and tailored intervention strategies for older people frequent in use of acute care.
High content-imaging drug synergy screening identifies specific senescence-related vulnerabilities of mesenchymal neuroblastomas
Neuroblastomas encompass malignant cells with varying degrees of differentiation, ranging from adrenergic (adr) cells resembling the sympathoadrenal lineage to undifferentiated, stem-cell-like mesenchymal (mes) cancer cells. Relapsed neuroblastomas, which often have mesenchymal features, have a poor prognosis and respond less to anticancer therapies, necessitating the development of novel treatment strategies. To identify novel treatment options, we analyzed the sensitivity of 91 pediatric cell...
Ankyrin-B modulates mitochondrial fission in skeletal muscle and is required for optimal endurance exercise capacity
Mitochondrial dynamics enable cellular adaptation to fluctuations in energy demand, such as those imposed on skeletal muscle by exercise, metabolic disorders, or aging. Here, we report a novel pathway that modulates mitochondria dynamics in skeletal muscle involving the scaffolding protein ankyrin-B. Rare variants in ankyrin-B, encoded by ANK2, increase risk for cardio-metabolic syndrome in humans and mice. We show that mice selectively lacking skeletal muscle ankyrin-B have reduced endurance...
Microbiota-derived corisin accelerates kidney fibrosis by promoting cellular aging
The increasing global prevalence of diabetic nephropathy poses substantial health and economic burdens. Currently, effective anti-fibrotic therapies for managing kidney fibrosis associated with chronic kidney disease are lacking. This study reveals corisin, a microbiota-derived peptide, as a central driver in the progression of diabetic kidney fibrosis. Corisin levels were found to be markedly elevated in the serum of diabetic chronic kidney disease patients relative to healthy controls, with...
Immunotherapy and senolytics in head and neck squamous cell carcinoma: phase 2 trial results
Recent advancements in cancer immunotherapy have improved patient outcomes, yet responses to immunotherapy remain moderate. Immunosenescence has been shown to contribute to the development and progression of various diseases; however, its specific role in solid tumors has not been fully delineated. Here we conducted a phase 2 clinical trial involving 51 patients with cancer undergoing neoadjuvant chemoimmunotherapy and applied single-cell RNA as well as TCR and BCR sequencing on tumor and blood...
Chronic pain in older adults with psychiatric disorders: the DoCPPA study protocol
BACKGROUND: Chronic pain (CP) and psychiatric disorders (PD) are common in older adults, and they both may significantly impact patients' functioning and quality of life. However, research on the prevalence and impact of CP in people with PD remains limited- especially in older adults- and psychiatric care often neglects somatic comorbidities.
Migration shapes senescence in a long-lived bird
Each year, billions of animals migrate across the globe on diverse spatial and temporal scales. Migration behavior thus plays a fundamental role in the life cycle and Darwinian fitness of many organisms. While the influence of migration on early-life survival and reproduction is well documented, its effects on senescence (aging) in advanced age remain largely unexplored. Using a unique 44-y ring-resighting dataset from a long-lived, partially migratory bird species, the Greater Flamingo...
Cohort mortality forecasts indicate signs of deceleration in life expectancy gains
The fast-paced improvements in mortality in high-income countries since the early 1900s have led to a sustained increase in life expectancy. However, whether this linear trend will continue or life expectancy gains will decelerate in the near future remains unclear. To answer this question, we apply multiple established and recently developed mortality forecasting methods to estimate cohort life expectancy for individuals born between 1939 and 2000 in 23 high-income countries. Across all...
Beta-Hydroxybutyrate but not NMN supplementation mimics caloric restriction reducing early mortality in Daphnia
NAD + homeostasis is an important determinant of lifespan and may be a key mechanism of caloric restriction (CR) expansion of lifespan. Ketone bodies such as beta-hydroxybutyrate (BHB) that regulate NAD + abundance and NAD + precursors such nicotinamide mononucleotide (NMN), are known to extend life in experimental animals and ameliorate age-related conditions in humans. We tested the hypothesis that chronic BHB and NMN exposure can extend lifespan similarly to the effect of CR treatment in a...
A novel <em>C. elegans</em> model for MAPT/Tau spreading reveals genes critical for endolysosomal integrity and seeded MAPT/Tau aggregation
The spreading of MAPT/Tau pathology is closely associated with the progression of neurodegeneration and cognitive decline in Alzheimer disease and other tauopathies. A key event in this process is the rupture of endolysosomal vesicles following the intercellular transfer of MAPT/Tau aggregates, releasing the transferred MAPT/Tau species into the cytosol where they can promote the aggregation of endogenous MAPT/Tau. However, understanding of the cellular pathways involved in this process remains...
Patient-reported discordance between care goals and treatment intent in advanced cancer
CONCLUSION: Compared to patients with other serious illnesses, a relatively large portion of patients with advanced cancer reported that their treatment discordantly focused on longevity over comfort despite their goal to prioritize comfort over longevity.
Curcumin and neuroplasticity: epigenetic mechanisms underlying cognitive enhancement in aging and neurodegenerative disorders
Aging and neurodegenerative diseases are characterized by cognitive decline, impaired neuroplasticity, and epigenetic dysregulation. Curcumin, a bioactive polyphenol derived from Curcuma longa, has gained significant attention for its neuroprotective properties, particularly in enhancing cognitive function through epigenetic mechanisms. This review explores the multifaceted role of curcumin in modulating key molecular pathways involved in neuroplasticity, including histone modifications, DNA...