Abstract
Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) is one of the predominant protein kinases in the brain. We found that CaM kinase II immunoreactivity was concentrated in the peripheral halos of Lewy bodies (LBs) in Parkinson's disease and Lewy body-like hyaline inclusions (LBHIs) in amyotrophic lateral sclerosis. An immunoelectron microscopic examination of LBs revealed that the filaments at the periphery of LBs were decorated with immunopositive deposits. Since CaM kinase II has a broad substrate specificity and can phosphorylate neurofilaments and other cytoskeletal proteins, it may play some role in the formation of LBs and LBHIs through the aberrant phosphorylation of the cytoskeletal elements in these inclusions.
MeSH Terms
Aged
Aged, 80 and over
Brain/enzymology,pathology,ultrastructure
Calcium-Calmodulin-Dependent Protein Kinases
Female
Humans
Immunoenzyme Techniques
Lewy Bodies/enzymology,ultrastructure
Male
Microscopy, Immunoelectron
Parkinson Disease/enzymology,pathology
Protein Kinases/analysis
Reference Values
Spinal Cord/enzymology,pathology,ultrastructure
Chemicals
Protein Kinases
Calcium-Calmodulin-Dependent Protein Kinases
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Iwatsubo T
Department of Neuropathology, Faculty of Medicine, University of Tokyo, Japan.
Nakano I
Fukunaga K
Miyamoto E
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