Unveiling Parkinson's Disease-like Changes Triggered by Spaceflight

TL;DR

This study reveals that spaceflight induces Parkinson's disease-like neurological changes in mice and humans, suggesting potential long-term health risks for astronauts during deep space missions.

Contribution

It is the first comprehensive meta-analysis linking spaceflight-induced brain changes to Parkinson's disease pathology, highlighting potential health risks for astronauts.

Findings

Spaceflight causes gait and dopamine loss similar to PD.

Altered expression of Parkinson's disease-related genes post-flight.

Potential for permanent brain changes due to spaceflight stressors.

Abstract

A meta-analysis of spaceflight data from both mouse and human flights reveals a striking overlap with Parkinson's disease (PD). Parallels include: changes in gait, loss of dopamine, sustained changes in the basal ganglia, loss of tyrosine hydroxylase in the substantia nigra, and systemic mitochondrial dysfunction. We identified specific Parkinson's genes differentially expressed post-spaceflight. These evidences indicate that spaceflight stressor-induced changes in the brain may become permanent during deep space exploration, posing a risk of PD in astronauts