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Tayebi N, Parisiadou L, Berhe B, Gonzalez AN, Serra-Vinardell J, Tamargo RJ, Maniwang E, Sorrentino Z, Fujiwara H, Grey RJ, Hassan S, Blech-Hermoni YN, Chen C, McGlinchey R, Makariou-Pikis C, Brooks M, Ginns EI, Ory DS, Giasson BI, Sidransky E. Glucocerebrosidase haploinsufficiency in A53T α-synuclein mice impacts disease onset and course. Mol Genet Metab 2017; 122:198-208. [PMID: 29173981 PMCID: PMC6007972 DOI: 10.1016/j.ymgme.2017.11.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 12/21/2022]
Abstract
Mutations in GBA1 encountered in Gaucher disease are a leading risk factor for Parkinson disease and associated Lewy body disorders. Many GBA1 mutation carriers, especially those with severe or null GBA1 alleles, have earlier and more progressive parkinsonism. To model the effect of partial glucocerebrosidase deficiency on neurological progression in vivo, mice with a human A53T α-synuclein (SNCAA53T) transgene were crossed with heterozygous null gba mice (gba+/-). Survival analysis of 84 mice showed that in gba+/-//SNCAA53T hemizygotes and homozygotes, the symptom onset was significantly earlier than in gba+/+//SNCAA53T mice (p-values 0.023-0.0030), with exacerbated disease progression (p-value <0.0001). Over-expression of SNCAA53T had no effect on glucocerebrosidase levels or activity. Immunoblotting demonstrated that gba haploinsufficiency did not lead to increased levels of either monomeric SNCA or insoluble high molecular weight SNCA in this model. Immunohistochemical analyses demonstrated that the abundance and distribution of SNCA pathology was also unaltered by gba haploinsufficiency. Thus, while the underlying mechanism is not clear, this model shows that gba deficiency impacts the age of onset and disease duration in aged SNCAA53T mice, providing a valuable resource to identify modifiers, pathways and possible moonlighting roles of glucocerebrosidase in Parkinson pathogenesis.
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Affiliation(s)
- Nahid Tayebi
- Medical Genetics Branch, NHGRI, NIH, Bethesda, MD, USA
| | - Loukia Parisiadou
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Bahafta Berhe
- Medical Genetics Branch, NHGRI, NIH, Bethesda, MD, USA
| | | | | | | | | | - Zachary Sorrentino
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Hideji Fujiwara
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | | | | | | | - Chuyu Chen
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Ryan McGlinchey
- Laboratory of Protein Conformation and Dynamics, NHLBI, NIH, Bethesda, MD. USA
| | - Chrissy Makariou-Pikis
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Mieu Brooks
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Edward I Ginns
- Lysosomal Disorders Treatment and Research Program, University of Massachusetts Medical School, Worcester, MA, USA
| | - Daniel S Ory
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Benoit I Giasson
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, College of Medicine, University of Florida, Gainesville, FL, USA
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Makariou-Pikis C, Peled AW, Newland GM, Wessel LA, Warren RD. Cultural sensitivity and health education: essential components to the success of the early detection cancer screening program for Latinas at MedStar Georgetown University Hospital. J Health Care Poor Underserved 2016; 25:460-8. [PMID: 24858861 DOI: 10.1353/hpu.2014.0094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Over 13 years, the Celebremos la Vida (CLV) program has offered free breast examinations, mammograms, and cervical cancer screenings to uninsured Latinas residing in the Northern Virginia suburbs of Washington, D.C. The CLV program aims to educate participants on the importance of breast self-examination and regular cancer screening for the early detection of breast and cervical cancer.
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