Autophagy and mitophagy elements are increased in body fluids of multiple sclerosis-affected individuals

Background

Multiple sclerosis (MS) is a chronic multifaceted demyelinating and neurodegenerative disease of the central nervous system (CNS) of presumed autoimmune origin.1

Patients with MS are characterised by a spatial and temporal dissemination of neurological sign and symptoms, by the presence of multifocal lesions in the periventricular white matter on MRI scans and by an immunoglobulin synthesis within the CNS.1 Further diagnostic tools are desirable, and the use of blood and cerebrospinal fluid (CSF) biomarkers may contribute to the comprehension of the disease's pathogenesis and progression.

Autophagy is an evolutionarily conserved and genetically controlled cellular process where intracellular components are sequestered within double-membrane vesicles (autophagosomes), which then fuse with lysosomes where the material is degraded.2 Autophagy also occurs as mitophagy, which is responsible for the removal of aberrant, aged and wasted mitochondria. Interestingly, autophagic/mitophagic pathways have been found deregulated in various human diseases. In particular, it...

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