Abstract:
:The autophagy-lysosomal degradation pathway plays a role in the onset and progression of neurodegenerative diseases. Clinical and genetic studies indicate that mutations of beta-glucocerebrosidase represent genetic risk factors for synucleinopathies, including Parkinson's Disease (PD) and Dementia with Lewy Bodies (DLB). We recently found a decreased activity of lysosomal hydrolases, namely beta-glucocerebrosidase, in cerebrospinal fluid of PD patients. We have thus measured the activity of these enzymes - alpha-mannosidase (EC 3.2.1.24), beta-mannosidase (EC 3.2.1.25), beta-glucocerebrosidase (EC 3.2.1.45), beta-galactosidase (EC 3.2.1.23) and beta-hexosaminidase (EC 3.2.1.52) - in cerebrospinal fluid of patients suffering from DLB, Alzheimer's Disease (AD), Fronto-Temporal Dementia (FTD) and controls. Alpha-mannosidase activity showed a marked decrease across all the pathological groups as compared to controls. Conversely, beta-glucocerebrosidase activity was selectively reduced in DLB, further suggesting that this enzyme might specifically be impaired in synucleinopathies.
journal_name
Neurobiol Disjournal_title
Neurobiology of diseaseauthors
Parnetti L,Balducci C,Pierguidi L,De Carlo C,Peducci M,D'Amore C,Padiglioni C,Mastrocola S,Persichetti E,Paciotti S,Bellomo G,Tambasco N,Rossi A,Beccari T,Calabresi Pdoi
10.1016/j.nbd.2009.03.002subject
Has Abstractpub_date
2009-06-01 00:00:00pages
484-6issue
3eissn
0969-9961issn
1095-953Xpii
S0969-9961(09)00057-6journal_volume
34pub_type
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