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A new study identifies LONRF2 as a protein quality control ubiquitin ligase that is induced in senescent neurons and seems to protect them against degeneration
Two new studies have provided important mechanistic insights into TDP-43 pathology, a hallmark of neurodegenerative conditions such as amyotrophic lateral sclerosis and frontotemporal lobar degeneration.
Two studies have confirmed previous observations that an inverse relationship exists between chronological age and focal white-matter inflammatory activity in individuals with multiple sclerosis, which could underlie the relative ineffectiveness of traditional disease-modifying therapies in older individuals.
The TRACK-TBI LONG study has shown that outcomes are highly variable in the 7 years after traumatic brain injury (TBI). Although many patients remain stable, almost one-third experience declines in cognitive, psychiatric and functional state. These findings suggest that TBI is a chronic disease and that its management should change accordingly.
Results from the phase III trials of the amyloid-targeting antibodies donanemab and solanezumab add further evidence that amyloid pathology is a key driver of cognitive decline in Alzheimer disease. The mixed results highlight important considerations for future trials and clinical practice.
Cholesterol has diverse roles in the brain, and precise regulation of cholesterol production and catabolism is essential for healthy brain function. This Review summarizes cholesterol regulation and function in the brain and discusses evidence of cholesterol dyshomeostasis in age-related neuropathology and a number of neurological diseases. In particular, the authors focus on Huntington disease and insights from rodent models.
Endemic parkinsonism occurs only in specific locations or populations. Here, Menšíková et al. describe clusters of endemic parkinsonism and highlight that those linked to neurotoxic environmental factors seem to be disappearing, while genetically determined clusters persist.
The amyotrophic lateral sclerosis exposome is the lifetime accumulation of environmental exposures that increase disease risk and affect progression. This Review summarizes the literature that has sought to characterize aspects of the amyotrophic lateral sclerosis exposome and considers potential mechanisms of exposure-induced toxicity.
