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Immunohistochemical localization of X-linked inhibitor of apoptosis protein in brainstem-type and cortical Lewy bodies.
MedLine Citation:
PMID:  22273571     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
X-linked inhibitor of apoptosis protein (XIAP) blocks the apoptosis by binding to and inhibiting caspases-3, 7, and 9. XIAP is negatively regulated by the mitochondrial serine protease, HtrA2/Omi. The aim of this study was to investigate the role of XIAP and the relationship between XIAP and HtrA2/Omi in patients with Parkinson's disease or dementia with Lewy bodies. We conducted immunohistochemical studies on XIAP in formalin-fixed, paraffin-embedded sections from eight normal participants, 10 patients with Parkinson's disease, five patients with dementia with Lewy bodies, and seven patients with Alzheimer's disease, and then double-labeling immunohistochemistry for XIAP and HtrA2/Omi in sections from the Parkinson's disease and dementia with Lewy bodies cases. Brainstem-type and cortical Lewy bodies were intensely immunostained for XIAP, and XIAP immunoreactivity was localized to the halos of brainstem-type Lewy bodies and to the entire bodies of cortical Lewy bodies. Double immunofluorescence analyses showed that XIAP and HtrA2/Omi immunoreactivities were colocalized to both types of Lewy bodies. Our results suggest that XIAP may be partially associated with the pathogenesis of Parkinson's disease and dementia with Lewy bodies.
Authors:
Yasuhiro Kawamoto; Hidefumi Ito; Masafumi Ihara; Ryosuke Takahashi
Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Neuroreport     Volume:  23     ISSN:  1473-558X     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-1-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9100935     Medline TA:  Neuroreport     Country:  -    
Other Details:
Languages:  ENG     Pagination:  162-167     Citation Subset:  -    
Affiliation:
aDepartment of Neurology, Faculty of Medicine, Kyoto University bDepartment of Neurology, Seijinkai Rakusaishimizu Hospital, Kyoto, Japan.
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