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  • Title: [Progressive inner ear diseases--sequelae of a secondary autoimmune process? Significance of antibodies to endoplasmic reticulum].
    Author: Zanetti F, Klein R, Berg PA.
    Journal: HNO; 1987 Jan; 35(1):34-7. PubMed ID: 3549636.
    Abstract:
    In sera from patients with different forms of inner ear diseases antibodies against endoplasmic reticulum (anti-ER) could be detected by ELISA in association with antisarcolemmal (ASA) and antiendothelial antibodies (AEA). 36% of 296 patients with sensorineural hearing loss (SNHL), 30% of 20 patients with tinnitus, 21% of 48 patients with sudden deafness and 20% of 49 patients with Menière's disease had ASA. 94% of these ASA positive patients were also positive for anti-ER. The overall frequency of anti-ER was 57% of patients with SNHL, 60% of patients with tinnitus, 46% of patients with sudden deafness and 22% of patients with Menière's disease. Analysing the clinical course in 5 anti-ER positive and 11 anti-ER negative patients with SNHL it was shown that all 5 patients either had a progressive course and/or a systemic manifestation in contrast to only 4 of the anti-ER negative patients. Anti-ER antibodies were also detected in 38-53% of patients with different chronic inflammatory disorders of unknown aetiology (polymyalgia rheumatica, vasculitis, sarcoidosis, ankylosing spondylitis etc.) while only 6% of patients with typical autoimmune disorders (collagen diseases, lupoid hepatitis, primary biliary cirrhosis) and 8% of blood donors had this antibody. Therefore it can be concluded that anti-ER antibodies have no apparent relevance for the diagnosis of SNHL. They may be, however, indicative of a secondary autoimmune process triggered by a persistent infectious agent.
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