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Lewy bodies are abnormal aggregates of protein that develop inside nerve cells.

They are identified under the microscope when histology is performed on the brain. They appear as spherical masses that displace other cell components. There are two morphological types: classical (brain stem) Lewy bodies and cortical Lewy bodies. A classical Lewy body is an eosinophilic cytoplasmic inclusion that consists of a dense core surrounded by a halo of 10-nm wide radiating fibrils, the primary structural component of which is alpha-synuclein. In contrast, a cortical Lewy body is less well-defined and lacks the halo. Nonetheless, it is still made up of alpha-synuclein fibrils.

Cell biology


A Lewy body is composed of the protein alpha-synuclein associated with other proteins such as ubiquitin, neurofilament protein, and alpha B crystallin. It is believed that Lewy bodies represent an aggresomal response in the cell.

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Meta Description: [ The Lewy Body Dementia Association is a site for the support and education of people with Lewy Body Dementia aka Lewy Body Disease (LBD) aka Louie Body Dementia aka Louie Body Disease and their caregivers. ]

Lewy Body Journal - A journal detailing the effects of LBD on a mother and how her family cares for her.
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