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  • Myositis  (2)
  • Neutralfett- und Mitochondrienakkumulation  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Zeitschrift für Rheumatologie 57 (1998), S. S47 
    ISSN: 0340-1855
    Schlagwort(e): Key words Fibromyalgia ; type II fiber atrophy ; lipid and mitochondria accumulation ; ragged red fiber ; mitochondrial genoma ; Schlüsselwörter Fibromyalgie ; Typ II-Faser-Atrophie ; Neutralfett- und Mitochondrienakkumulation ; ragged red fiber ; mitochondriales Genom
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Bei der Fibromyalgie finden sich morphologisch, insbesondere in längergehenden Krankheitsstadien, mit konventionellen muskelbioptischen Methoden überwiegend unspezifische Befunde, wie eine Typ II-Faser-Atrophie, wie sie auch bei Inaktivitätsatrophie, Affektionen der kortikospinalen Bahnen, steroidbedingter Atrophie und anderen neuromuskulären Störungen vorkommen, eine Mikroangiopathie und eine leichte Neutralfett- sowie Mitochondrienvermehrung. Einige der akkumulierten Mitochondrien zeigen eine abnorme Struktur. In eigenen Untersuchungen ließen sich in einem Teil der Fälle einzelne, sog. ragged red fibers nachweisen, denen in einigen Fällen Deletionen der mitochondrialen DNA zugeordnet werden konnten.
    Notizen: Summary The most common morphological finding in muscle biopsis in longstanding fibromyalgia is type II fiber atrophy. This can be found in many other conditions such as disuse atrophy, affections of the corticospinal tracts, steroid atrophy, and other different neuromuscular disorders. An increase in lipid droplets and a slight proliferation of mitochondria in type I muscle fibers are correlated with the duration of fibromyalgia. In some cases we could find some ragged red fibers (RRF) which histochemically show a pronounced accumulation of lipids and mitochondria and single fiber defects of cytochrome-c-oxidase. In some fibromyalgia patients with RRF, we could find deletions of the mitochondrial genoma.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1432-1459
    Schlagwort(e): Borrelia burgdorferi ; Lyme disease ; Myositis ; Immunohistology ; Culture
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Myositis is a rare manifestation of Lyme disease of unknown pathogenesis. This study describes the course of disease in eight patients with Lyme disease, aged 37–70 years, all of whom were suffering from histologically proven myositis. The Clnical, electrophysiological, and myopathological findings are reported. One patient showed signs and symptoms of myositis of all limbs. In six patients myositis was localized in the vicinity of skin lesions, arthritis or neuropathy caused byBorrelia burgdorferi. In another patient suffering from pronounced muscle weakness of the legs and cardiac arrest, inflammation of the myocardium, the conducting system and skeletal muscles was revealed at autopsy. Muscle biopsy revealed lymphoplasmocellular infiltrates combined with few fibre degenerations in three patients. The lymphoplasmocellular infiltrates were found predominantly in the vicinity of small vessels. Several spirochetes were stained in six of seven muscle biopsy samples by means of the immunogold-silver technique. Culturing ofB. Burgdorferi from the muscle biopsy samples was, however, unsuccessful. Antibiotic treatment succeeded in curing the myositis in four of six patients. In one patients signs and symptoms improved. One patient died from cardiac arrest caused by myocarditis and Guillain-Barré syndrome. The outcome is unknown in one patient. Clinical and myopathological findings indicate that Lyme myositis can be caused either by local spreading ofB. burgdorferi or an unknown antigen or toxin from adjacent tissues or haematogenously.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1432-1459
    Schlagwort(e): Myositis ; Skeletal muscles ; Magnetic resonance imaging ; Creatine kinase ; Electromyography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The purpose of the study was to describe typical MRI findings in various types of idiopathic inflammatory myopathies in adulthood and to correlate the MRI with histopathological and electromyographic findings, and the serum creatine kinase (CK) activity. A third goal was to assess the diagnostic value of the use of gadolinium-DTPA (Gd-DTPA). Fifty-eight patients (35 women, 23 men), aged 21–83 years (median age 59 years), suffering from idiopathic myositides (13 with acute and 45 chronic diseases; 25 with polymyositis, 14 with dermatomyositis, 8 with granulomatous and 11 with inclusion body myositides) were examined with MRI. Seventeen of them received an intravenous infusion of Gd-DTPA. Histopathological and MRI findings of 21 muscles of 18 patients were compared. MRI of skeletal muscles showed abnormal signal intensities in 56 (96.6%) of the 58 patients. MRI abnormalities were found more often than elevated CK activity (P 〈 0.001). The hyperintensity of T2-weighted images was more conspicuous than on T1-weighted images in 26 (44.8%) patients, indicating oedema-like abnormalities. MRI of 50 (86.2%) patients showed fat replacement. In acute myositides, oedema-like abnormalities were more often visible and in muscle lipomatosis less often visible than in chronic diseases (P 〈 0.05 each). In dermatomyositis oedema-like abnormalities were more and lipomatosis less frequent than in the other types of myositis (P 〈 0.005) and correlated with the acuteness of the disease. In 3 of 17 patients in whom contrast-enhanced T1-weighted images were obtained in addition to plain T1- and T2-weighted images, T2-weighted images were more sensitive in the detection of oedema-like abnormalities than the contrast-enhanced T1-weighted images. In no patient was the opposite true. Thus, contrast-enhanced T1-weighted images did not provide more information than T2-weighted images. Nine patients with poly-, dermato- and inclusion body myositis showed clearly asymmetrical findings. Imaging of the thighs and legs was of similar sensitivity. The different types of myositides showed typical but not specific distributions of the mesenchymal abnormalities in MRI. The findings indicate that MRI of skeletal muscles in myositides can visualize the presence and distribution of oedema-like abnormalities and intramuscular lipomatosis and is suitable for the assessment of the chronicity and severity of the disease.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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