Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027121 (myositis)
 4,538 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

An outbreak of muscle disease affected approximately 20 of 600 ewes in spring 1987 in south-east Scotland. The clinical signs were a flaccid paralysis of the hind limbs and in severe cases collapse. Serum creatine kinase and aspartate aminotransferase activities were increased. Clinically affected sheep had a mean reciprocal serum antibody titre in a sarcocystis immunofluorescence antibody test of 557 whereas 22 sheep from the same flock, sampled one year earlier, showed a mean reciprocal titre of only 51. Histologically a heavy infestation of sarcocysts, myodegeneration and a non-suppurative myositis centred on degenerating sarcocysts were observed in a wide range of skeletal muscles and myocardium from four affected sheep. Monensin sodium had been inadvertently included in the protein pellet used in the feed for one week before the onset of the disease.
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PMID:A myopathy of sheep associated with sarcocystis infection and monensin administration. 250 29

Two male patients (53 and 19 years old) have been seen with a diffuse scleroderma-like illness with firm taut skin bound down to underlying structures (sparing the face in both patients and the hands and feet in one). Flexion contractures of elbows and knees and limitation of abduction at the shoulders developed in a few weeks after onset. Raynaud's phenomenon was absent and thorough evaluation failed to reveal any evidence of myositis or the visceral manifestations of systemic sclerosis. There was no loss of skin appendages. Both had circulating eosinophils (12% and 37%) without drug ingestion or parasitic infestation. Both had elevated sedimentation rates and hypergammaglobulinemia (in one, IgG = 4.1 g.%). Serologic tests for syphilis, rheumatoid factor, LE cells, antinuclear antibodies, complement and cryoglobulins were negative or normal in both patients. Bone marrow examination revealed plasmacytosis and eosinophilia. Biopsies revealed striking thickening of the fascia between the subcutis and muscle. Within the thickened connective tissue there was intense infiltration with plasma cells and lymphocytes, at times in follicles, both about and separate from vessels; eosinophils were absent. Skin biopsies revealed no changes of scleroderma; and muscle biopsies, no evidence of myositis. Prednisone therapy over 15 months in decreasing dosage, using laboratory parameters, induced in the first patient a full remission which has persisted for 5 years without therapy. In the second (more severely involved) patient prednisone therapy has reversed laboratory abnormalities; but clinical improvement to date has been minimal. The pathogenesis of this diffuse fasciitis is obscure, although unusual physical exertion antedated the onset of illness in each case.
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PMID:Diffuse fasciitis with hypergammaglobulinemia and eosinophilia: a new syndrome? 654 92

Parasitic infestation can induce a variety of rheumatic syndromes as a result of infiltration of musculoskeletal structures by parasites or an immune mediated mechanism. Parasite-induced symptoms should be considered when arthritis, enthesitis, myositis, or vasculitis develop in patients residing in endemic areas and in certain subsets of the population of developed countries, for example, migrants, travelers, and immunocompromised individuals. Diagnosis is based on the demonstration of infection with a pathogenic parasite, lack of response to anti-inflammatory agents, and improvement following antiparasitic therapy. Treatment consists of erradication of the parasite.
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PMID:Musculoskeletal syndromes in parasitic diseases. 850 85

Cysticercosis, the infestation with the encysted larval stage of Taenia solium, is increasingly recognized as a major problem in most countries in Latin America, Asia, and Africa, involving mainly the central nervous system. Muscle involvement is also common, although it usually remains asymptomatic. We describe a case of disseminated muscular cysticercosis followed by myositis (fever, diffuse myalgia, weakness of the lower limbs, and inflammatory reaction around dying cysticerci) induced by praziquantel therapy, an event not described previously.
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PMID:Disseminated muscular cysticercosis with myositis induced by praziquantel therapy. 988 13

Myiasis is the infestation of live humans with larvae of Diptera (true flies). This report describes a protracted illness caused by infestation with Hypoderma lineatum, resembling the hypereosinophilic syndrome. A 35-year-old man had a 9-month multisystemic illness with pronounced eosinophilia, pleuritis, pericarditis, and myositis. Treatments including glucocorticoids did not alter the disease. Diagnostic studies included computed tomography, 2-dimensional echocardiography, leukocyte count, surgical biopsy of skin and muscle, blood immunoglobulin levels, and blood chemistry. Myiasis was recognized when a worm emerged from the patient's skin; after a second worm emerged, the patient's symptoms disappeared rapidly. Other determinations included IgE and IgG levels specific for H lineatum, Western blot, and immunofluorescence for eosinophil major basic protein; IgG antibodies to H lineatum decreased after emergence of the worms. The patient's symptoms mimicked the hypereosinophilic syndrome but resolved when the myiasis became apparent. Specific serologic analyses can identify infected patients, and ivermectin may be useful as treatment.
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PMID:Myiasis due to Hypoderma lineatum infection mimicking the hypereosinophilic syndrome. 1090 94

Despite the profound impact that skeletal muscle disorders may pose for the daily activities of wild terrestrial and marine mammals, such conditions have been rarely described in cetaceans. In this study, the authors aimed to determine the nature and prevalence of skeletal muscle lesions in small and large odontocetes and mysticetes ( n = 153) from 19 different species. A macroscopic evaluation of the epaxial muscle mass and a histologic examination of the longissimus dorsi muscle were performed in all cases. The only macroscopically evident change was variable degrees of atrophy of the epaxial muscles ( longissimus dorsi, multifidus, spinalis) in emaciated specimens. The histopathological study revealed single or combined morphological changes in 91.5% of the cases. These changes included the following: degenerative lesions (75.2%), muscle atrophy (37.9%), chronic myopathic changes (25.5%), parasitic infestation (9.2%), and myositis (1.9%). The skeletal muscle is easily sampled during a necropsy and provides essential microscopic information that reflects both local and systemic conditions. Thus, skeletal muscle should be systematically sampled, processed, and examined in all stranded cetaceans.
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PMID:Muscle Pathology in Free-Ranging Stranded Cetaceans. 2753 73