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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/12713


    Title: Immune-mediated axonal dysfunction in seropositive and seronegative primary Sjögren’s syndrome
    Other Titles: Immune‐mediated axonal dysfunction in seropositive and seronegative primary Sjogren's syndrome
    Authors: Tani, J;Liao, HT;Hsu, HC;Chen, LF;Shin-Yi Lin, C;Sung, JY
    Contributors: NHRI Graduate Student Program
    Abstract: Objective: The present study investigates the peripheral neuropathy in Primary Sjögren's syndrome (pSS) using the nerve excitability test to further elucidate how peripheral nerves are affected by the autoantibodies. Methods: Each patient received clinical evaluation, examination for anti‐SSA/Ro and anti‐SSB/La antibodies titer, paired motor and sensory nerve excitability test, thermal quantitative sensory test (QST), and nerve conduction study (NCS). Results: A total of 40 pSS patients wasenrolled. Motor axonal study of the pSS with positive anti‐SSA/Ro or anti‐SSB/La antibodies (n = 28) was found to have increased stimulus for 50% compound muscle action potential (CMAP) (P < 0.05), increased rheobase (P < 0.01), increased minimum I/V slope (P < 0.01) and hyperpolarizing I/V slope (P < 0.05), increased relative refractory period (RRP, P < 0.001), decreased accommodation of threshold electrotonus toward depolarizing current (P < 0.05), and increased accommodation toward hyperpolarizing current (P < 0.05). Seronegative pSS (n = 10) showed much less prominent motor axonal changes, showing only increased minimum I/V slope (P < 0.05). Sensory axonal study in seropositive pSS patients is found to have increased stimulus for 50% sensory nerve action potential (SNAP) (P < 0.01), decreased latency (P < 0.01), increased RRP (P < 0.01), and increased subexcitability (P < 0.05). Seronegative pSS patients have shown no significant sensory axonal changes. Thermal QST showed more prominent abnormalities in seronegative pSS compared to seropositive pSS. Interpretation: Anti‐SSA/Ro and anti‐SSB/La autoantibodies might cause dysfunction in nodal and internodal region of the axon and small nerve fibers; meanwhile, autoreactive antibodies in seronegative pSS mainly affect small nerve fibers. Thus, the underlying pathophysiology for the two types of pSS is different.
    Date: 2020-05
    Relation: Annals of Clinical and Translational Neurology. 2020 May;7(5):819-828.
    Link to: http://dx.doi.org/10.1002/acn3.51053
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=2328-9503&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000532864100001
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85084684128
    Appears in Collections:[其他] 期刊論文

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