Skin nerve α-synuclein deposits in Parkinson’s disease and other synucleinopathies: a review.

Skin nerve α-synuclein deposits in Parkinson’s disease and other synucleinopathies: a review.

Publication date: Dec 01, 2019

The in vivo diagnosis of synucleinopathies is an important research aim since clinical diagnostic criteria show low accuracy. The skin innervation, especially the autonomic subdivision, is a useful region to search for abnormal ?-syn aggregates in synucleinopathies since the peripheral sympathetic nerves can be the earliest-affected neural region and autonomic symptoms may precede the classical symptoms of these disorders.

The major advantages of skin biopsy as an in vivo diagnostic tool for synucleinopathies are that it is an inexpensive and easy-to-perform technique requiring only limited facilities, and that it is repeatable in long-term studies as it causes only minor discomfort to the patient.

This review analyzes current progress in this area of research that may facilitate the standardization of this method, potentially eliminating differences among laboratories in the implementation of the method.

The most suitable and commonly used technique for identifying in vivo ?-syn aggregates in skin nerves is indirect immunofluorescence, although several aspects of this approach need to be standardized, particularly when synucleinopathies without autonomic failure present a patchy distribution of abnormal ?-syn aggregates in skin nerves. By contrast, synucleinopathies with autonomic failure may present widespread diffusion of abnormal aggregates in autonomic skin nerves.

Concepts Keywords
Indirect Immunofluorescence
Skin Biopsy
Sympathetic Nerves


Type Source Name
disease MESH diagnosis
disease MESH biopsy
disease MESH Dementia
disease MESH Pure autonomic failure


Original Article

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