Aging & Longevity

Chronic pain-induced methylation in the prefrontal cortex targets gene networks associated with cognition and Alzheimer's disease

1 month 2 weeks ago
Chronic pain is prevalent among aging adults. Epidemiologic evidence has demonstrated that individuals with chronic pain have accelerated memory decline and increased probability of dementia. Neurophysiologic, molecular, and pharmacologic hypotheses have been proposed to explain the relationship between chronic pain and cognitive decline, but there remains currently limited evidence supporting any of these. Here, we integrate multi-omic data across human cohorts and rodent species and...
Joseph R Scarpa

Inequalities in Transitions to Home Care: A Longitudinal Analysis of the Canadian Longitudinal Study on Aging

1 month 2 weeks ago
CONCLUSIONS AND IMPLICATIONS: We found meaningful differences in home care transitions across several equity strata. Individuals with higher income have greater ability to access to private care, creating inequity in access to home care services. Gendered factors such as income and social support have important associations with home care use. Home care planning and policy must address the unique barriers and disadvantages diverse populations face to ensure equitable use of home care and promote...
James Lee

Neutralization of the autophagy-repressive tissue hormone DBI/ACBP (diazepam binding inhibitor, acyl-CoA binding protein) enhances anticancer immunosurveillance

1 month 2 weeks ago
The plasma concentration of the macroautophagy/autophagy inhibitor DBI/ACBP (diazepam binding inhibitor, acyl-CoA binding protein) increases with aging and body mass index (BMI). Both advanced age and obesity are among the most important risk factors for the development of cancer. We observed that patients with cancer predisposition syndromes due to mutations in BRCA1, BRCA2 and TP53 exhibit abnormally high plasma DBI/ACBP levels. Additionally, patients without known cancer predisposition...
Léa Montégut

Alzheimer's disease and other memory disorders in the age of AI: reflection and perspectives on the 120th anniversary of the birth of Dr. John von Neumann

1 month 2 weeks ago
Two themes are coming to the forefront in this decade: Cognitive impairment of an aging population and the quantum leap in developing artificial intelligence (AI). Both can be described as growing exponentially and presenting serious challenges. Although many questions have been addressed about the dangers of AI, we want to go beyond the fearful aspects of this topic and focus on the possible contribution of AI to solve the problem of chronic disorders of the elderly leading to cognitive...
Ferenc Deak

Expression of most retrotransposons in human blood correlates with biological aging

1 month 2 weeks ago
Retrotransposons (RTEs) have been postulated to reactivate with age and contribute to aging through activated innate immune response and inflammation. Here, we analyzed the relationship between RTE expression and aging using published transcriptomic and methylomic datasets of human blood. Despite no observed correlation between RTE activity and chronological age, the expression of most RTE classes and families except short interspersed nuclear elements (SINEs) correlated with biological...
Yi-Ting Tsai

Gut-to-brain regulation of Drosophila aging through neuropeptide F, insulin, and juvenile hormone

1 month 2 weeks ago
Dietary restriction (DR) slows aging in many animals, while in some cases, the sensory signals from diet alone are sufficient to retard or accelerate lifespan. The digestive tract is a candidate location to sense nutrients, where neuropeptides secreted by enteroendocrine cells (EEC) produce systemic signals in response to food. Here, we measure how Drosophila neuropeptide F (NPF) is secreted into adult circulation by EEC and find that specific EEC differentially respond to dietary sugar and...
Jiangtian Chen

Melatonin receptor 1A variants as genetic cause of idiopathic osteoporosis

1 month 2 weeks ago
Idiopathic osteoporosis (IOP) is a rare form of early-onset osteoporosis diagnosed in patients with no known metabolic or hormonal cause of bone loss and unknown pathogenesis. Patients with IOP commonly report both childhood fractures and family history of osteoporosis, raising the possibility of genetic etiologies of IOP. Whole-exome sequencing analyses of different IOP cohorts identified multiple variants in melatonin receptor 1A (MTNR1A) with a potential pathogenic outcome. A rare MTNR1A...
Brygida Bisikirska

Lighting up arginine metabolism reveals its functional diversity in physiology and pathology

1 month 2 weeks ago
Arginine is one of the most metabolically versatile amino acids and plays pivotal roles in diverse biological and pathological processes; however, sensitive tracking of arginine dynamics in situ remains technically challenging. Here, we engineer high-performance fluorescent biosensors, denoted sensitive to arginine (STAR), to illuminate arginine metabolism in cells, mice, and clinical samples. Utilizing STAR, we demonstrate the effects of different amino acids in regulating intra- and...
Rui Li

Epigenetic clocks and programmatic aging

1 month 2 weeks ago
The last decade has seen remarkable progress in the characterization of methylation clocks that can serve as indicators of biological age in humans and many other mammalian species. While the biological processes of aging that underlie these clocks have remained unclear, several clues have pointed to a link to developmental mechanisms. These include the presence in the vicinity of clock CpG sites of genes that specify development, including those of the Hox (homeobox) and polycomb classes. Here...
David Gems

Spatiotemporal cerebral blood flow dynamics underlies emergence of the limbic-sensorimotor-association cortical gradient in human infancy

1 month 2 weeks ago
Infant cerebral blood flow (CBF) delivers nutrients and oxygen to fulfill brain energy consumption requirements for the fastest period of postnatal brain development across the lifespan. However, organizing principle of whole-brain CBF dynamics during infancy remains obscure. Leveraging a unique cohort of 100+ infants with high-resolution arterial spin labeled MRI, we find the emergence of the cortical hierarchy revealed by the highest-resolution infant CBF maps available to date. Infant CBF...
Minhui Ouyang

The impact of cultural practice and policy on dementia care in Nepal

1 month 2 weeks ago
CONCLUSION: There is a need for community-based awareness raising on dementia and its care, to sensitise all relevant stakeholders to meet the needs of PLWD. In addition, capacity building of health workforce is needed to enhance their knowledge of and skills in providing culturally appropriate dementia care.
Bibha Simkhada

Altered tubulin detyrosination due to SVBP malfunction induces cytokinesis failure and senescence, underlying a complex hereditary spastic paraplegia

1 month 2 weeks ago
Senescence, marked by permanent cell cycle arrest may contribute to the decline in regenerative potential and neuronal function, thereby promoting neurodegenerative disorders. In this study, we employed whole exome sequencing to identify a previously unreported biallelic missense variant in SVBP (p.Leu49Pro) in six patients from three unrelated families. These affected individuals present with a complex hereditary spastic paraplegia (HSP), peripheral neuropathy, verbal apraxia, and intellectual...
Nathalie Launay

Functional foods in Mediterranean diet: exploring the functional features of vegetable case-studies obtained also by biotechnological approaches

1 month 2 weeks ago
The Mediterranean Diet (MedDiet) is a widely recognized dietary pattern, with its effects largely attributed to "functional foods" which are able to positively influence one or more target functions, improving health and maintaining a state of well-being.In this review, three "case-study" typical of the MedDiet, such as artichokes, capers and table olives are considered as traditional functional vegetables rich in bioactive compounds, mainly polyphenols. The review extensively discusses the...
Anna Rita Bavaro
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