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  • Title: [Clinico-electrophysiological and pathological characteristics of neuropathy in Sjögren's syndrome: a report of 5 cases].
    Author: Zhang Y, Wan Y, Zhang B, Dong R, Zhong Y, Liao Q, Fan D.
    Journal: Zhonghua Yi Xue Za Zhi; 2014 Mar 25; 94(11):855-8. PubMed ID: 24854756.
    Abstract:
    OBJECTIVE: To summarize the clinical features, electrophysiological and neuropathological characteristics of peripheral nerves in patients with primary Sjögren's syndrome (SS). METHODS: We retrospectively analyzed the clinical, electrophysiological and neuropathological characteristics of 5 female SS patients with neuropathy complications undergoing electrophysiology and sural nerve biopsy at our department from January 2011 to June 2013. RESULTS: They had an age range of 20-75 years. The course of peripheral neuropathy ranged 0.5-60 months and the whole course 12-240 months. pSS-associated neuropathy included multiple mononeuropathy (n = 1), symmetrical axonal sensorimotor polyneuropathy (n = 1) and sensory ganglioneuronopathy (n = 3). All biopsies showed varying degrees of myelinated fiber loss. Three biopsies had axonal degeneration associated with demyelination. However, there was no formation of onion bulb regeneration or plexus. Necrotizing vasculitis was diagnosed in 2 cases. CONCLUSION: The manifestations of peripheral nerve n pSS include multiple mononeuropathy, axonal symmetric sensorimotor polyneuropathy and sensory gangioneuronopathy. Sural biopsy shows typical necrotizing vasculitis in some cases and myelinated fiber loss and axonal degeneration in others. The pathogenic mechanisms of neurological involvement in pSS remain unknown. However, vasculitis, ischemic and immunological insults resulting in sensory gangioneuronopathy have been described.
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