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  • Title: [Refsum's disease. Apropos of 2 cases disclosed by myocardiopathy].
    Author: Millaire A, Warembourg A, Leys D, Tison E, Tondeux S, De Groote P, Ketelers JY, Fourrier F, Petit H, Ducloux G.
    Journal: Ann Cardiol Angeiol (Paris); 1990 Mar; 39(3):173-8. PubMed ID: 1693053.
    Abstract:
    Refsum's disease is a polyneuropathy due to a hereditary error in the metabolism of a fatty acid, phytanic acid, usually leading to cardiac failure only at an advanced stage of the disease. The authors report the case of two brothers with Refsum's disease revealed by a heart failure before the clinical stage of the peripheral neuropathy. In the younger brother, the affection started at the age of 22 years by an acute pulmonary oedema which revealed a dilated, hypokinetic myocardiopathy, associated with retinitis pigmentosa, ptosis, anosmia and biological myolysis. The normal plasma concentration of phytanic acid measured several times led to the conclusion of Kearns-Sayre syndrome even if certain aspects were atypical (moderate conduction disorders, no characteristic aspect in the muscle biopsy). Five years later, the older brother, aged 28, presents a dyspnea on effort which leads to the discovery of a hypokinetic, hypertrophic myocardiopathy, slightly dilated, associated with cardiac conduction disorders, retinitis pigmentosa, anosmia and biological myolysis. The plasma concentration of phytanic acid being very high. Refsum's disease was diagnosed and the diagnosis of younger brother was corrected. From the study of these two cases, the characteristics of the cardiac disorders can be specified: the cardiopathy can reveal the disease and correspond to a dilated or hypertrophic myocardiopathy. The diagnosis of the disease can be difficult because the plasma phytanic acid may remain at normal level, thus requiring the assay of the activity of phytanate oxydase. The existence of ophthalmologic signs (retinitis pigmentosa or progressive ophthalmoplegia externa) associated with a myocardiopathy must systematically lead to a search for Refsum's disease, this diagnosis having fundamental therapeutic implications (died, even plasmapheresis).(ABSTRACT TRUNCATED AT 250 WORDS)
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