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  • Title: Relationship between Sjögren's syndrome and human T-lymphotropic virus type I infection: follow-up study of 83 patients.
    Author: Nakamura H, Kawakami A, Tominaga M, Hida A, Yamasaki S, Migita K, Kawabe Y, Nakamura T, Eguchi K.
    Journal: J Lab Clin Med; 2000 Feb; 135(2):139-44. PubMed ID: 10695658.
    Abstract:
    We have previously demonstrated a high prevalence of Sjögren's syndrome (SS) in patients with human T-lymphotropic virus type I-associated myelopathy (HAM) in Nagasaki prefecture. The present follow-up study compared the clinical and laboratory findings of SS with or without human T-lymphotropic virus type I (HTLV-I) antibody in this endemic area for HTLV-I infection. We investigated the clinical and laboratory manifestations in 83 patients with SS and HAM, including histologic examination of labial salivary glands and the prevalence of SS in patients with HAM. Definite SS was diagnosed in 13 out of 20 patients with HAM when the European Community criteria were used. The density of mononuclear cell infiltration in labial salivary glands was higher in HTLV-I-seropositive patients with SS (including patients with HAM) than in HTLV-I-seronegative patients. The volume of saliva and lacrima determined by the Schirmer or Saxon test was lower than normal but was not different among SS-HTLV-I-seronegative patients, HTLV-I-seropositive patients without HAM, and HTLV-I-seropositive patients with HAM. The proportions of patients positive for antinuclear antibody (ANA) and anti-SS-A (Ro) antibody or anti-SS-B (La) antibody were similar in the three groups. However, the low volume of saliva and the frequency of ANA in SS correlated with the degree of mononuclear cell infiltration in labial salivary glands. Our results suggested that HTLV-I infection is related to SS and that laboratory and clinical findings in SS closely correlate with the degree of mononuclear cell infiltration in the salivary glands.
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