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Trends Mol Med. 2011 Sep;17(9):485-93. doi: 10.1016/j.molmed.2011.05.003. Epub 2011 Jul 1.

Exploring the link between glucocerebrosidase mutations and parkinsonism.

Author information

1
Section on Molecular Neurogenetics, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA.

Abstract

Clinical, genetic and pathological studies demonstrate that mutations in glucocerebrosidase (GBA), which encodes the lysosomal enzyme deficient in Gaucher disease (GD), are risk factors for Parkinson disease (PD) and related disorders. Some patients with GD and Gaucher carriers develop parkinsonism. Furthermore, subjects with PD have an increased frequency of GBA mutations. GBA-mutation carriers exhibit diverse parkinsonian phenotypes and have glucocerebrosidase-positive Lewy bodies. Although the mechanism for this association is unknown, we present several theories, including protein aggregation, prion transmission, lipid accumulation and impaired autophagy, mitophagy or trafficking. Each model has inherent limitations, and a second-hit mutation might be essential. Elucidation of the basis for this link will have important consequences for studying these diseases and should provide insights into lysosomal pathways and potential treatment strategies.

PMID:
21723784
PMCID:
PMC3351003
DOI:
10.1016/j.molmed.2011.05.003
[Indexed for MEDLINE]
Free PMC Article

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