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  • Title: [The significance of Ulex europaeus agglutinin I lectin binding fibers in various muscular diseases].
    Author: Yatabe K, Hiraguri M, Sueishi M, Takeuchi M, Nonaka I, Kawai M.
    Journal: Rinsho Shinkeigaku; 1998 May; 38(5):395-401. PubMed ID: 9805983.
    Abstract:
    In the present study, we have reported that Ulex europaeus agglutinin I (UEA I) lectin labeled muscle fibers in distal myopathy with rimmed vacuole formation (DMRV). UEA I binding to muscle fibers was also observed in a small number of biopsies with inflammatory myopathy, but not in other diseases, including neurogenic muscular atrophies and muscular dystrophies. In order to elucidate the relationship between this UEA I binding, rimmed vacuole formation and active autophagocytosis, we examined the UEA I binding fibers in other myopathies which frequently showed rimmed vacuoles, including adult onset acid maltase deficiency, oculo-pharyngo-distal type myopathy and oculopharyngeal muscular dystrophy. No UEA I lectin labeling fiber was observed in the diseases examined. We then studied UEA I binding behavior on 70 biopsies of inflammatory myopathy to characterize the clinical features of UEA I binding positive patients. UEA I binding fibers were observed in 3 of 28 patients (11%) with other collagen diseases, 11 of 36 (31%) without these disorders, and 2 of 6 (33%) with inclusion body myositis. There were no common clinical histories, complications or laboratory findings among the UEA I binding positive patients. In conclusion, a common process may exist between the muscle fiber degeneration in DMRV and subgroups of inflammatory myopathy patients, but the basic mechanism remains to be elucidated.
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