NeuroPsy InfoHub adună studii și articole verificate editorial despre sănătate mintală și afecțiuni neurologice — pentru pacienți, familii și specialiști.
This review examines the relationship between loneliness and social isolation as major risk factors for Alzheimer's disease and cognitive decline, with particular attention to sex differences. The authors discuss mechanisms linking isolation to AD pathology and propose approaches for developing prevention and treatment strategies based on understanding these associations.
Alzheimer's disease is characterized by the accumulation of tau, a toxic protein that damages neurons. As tau spreads throughout the brain to new regions, cognitive decline accelerates and the disease progresses in severity.
This systematic review of five studies involving over 1.6 million participants examines how microvascular complications from diabetes—particularly neuropathy and nephropathy—increase dementia risk, with hazard ratios ranging from 1.12-1.26. Poor glycemic control (HbA1c) and its variability independently contribute to cognitive decline, with each 1% increase in HbA1c associated with an 8% increased dementia risk.
Researchers identified a previously unknown type of programmed cell death called karyoptosis, characterized by nuclear disintegration and driven by interaction between p38 MAP kinase and LaminB1 proteins. This mechanism was observed in approximately 35% of neurons in the frontal cortex of Alzheimer's disease patients, potentially offering new insights into neuronal loss in the disease.
Iron accumulation in the brain is being investigated as a contributing factor to neurodegenerative diseases, particularly Alzheimer's and Parkinson's disease. Scientists are studying this mechanism as part of ongoing efforts to understand the complex processes underlying these conditions affecting millions worldwide.
