Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C1762617 (weakness)
 37,932 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Upon careful examination, 23 of 24 patients with progressive systemic sclerosis (PSS) were found to have abnormalities of muscle. Nineteen patients presented a homogenous pattern of muscle abnormalities, which untreated was associated with a stable course ("simple myopathy"). Three patients demonstrated inflammatory muscle disease indistinguishable from polymyositis while a fourth patient developed marked weakness associated with a generalized neuropathic process. Muscle enzymes, electromyogram, and muscle biopsy permitted distinction among the different muscle disorders, a distinction that could have prognostic and therapeutic importance.
 ...
PMID:Muscle disease in progressive systemic sclerosis: diagnostic and therapeutic considerations. 62 95

Systemic lupus erythematosus with polymyositis and polyarthritis was diagnosed in a 7-year-old female Standard Poodle. Pertinent clinical signs included extreme muscular weakness, muscle wasting, atrial fibrillation, and dysphagia due to megaesophagus. Aspiration pneumonia secondary to the megaesophagus contributed to the death of the dog. Serum muscle enzyme activities were increased. Electromyographic findings included fibrillation potentials, positive sharp waves, increased insertional activity, and bizarre high-frequency repetitive potentials. Histopathologic findings in skeletal muscle included myofiber necrosis and phagocytosis; regeneration of myofibers; perivascular and interstitial infiltrations of macrophages, lymphocytes, and plasma cells; and type I and II myofiber degeneration and vacuolation.
 ...
PMID:Polymyositis and polyarthritis associated with systemic lupus erythematosus in a dog. 83 Jun 33

A partial review of selected published case reports of AD-P associated with malignancy has been enhanced by the presentation of pertinent data on 15 unreported examples of the association. It is noteworthy that the first case in current literature of AD-P associated with a malignancy was described in 1916. The brief clinical report of a patient with proximal muscle weakness and skin lesions, with the obvious association with a malignancy (adenocarcinoma of the stomach), describes an example that has been repeated many times with different types of tumors but with essentially no variations in the clinical findings. In 1959 Williams identified 590 cases of AD with an overall tumor rate of 15%, and recently Barnes identified 258 cases of AD associated with a malignancy. The original designation, dermatomyositis or AD, has now been expanded to include proximal muscle polymyositis with systemic involvement, which syndrome at the current state of the art is indistinguishable clinically and pathologically from AD except for the lack of skin lesions. It may be that at some future time one or more immunologic features may differnetiate the clinical entity polymyositis from AD and further subdivide each of these entitites from similar clinical syndromes associated with a malignancy. However, the problem in management in either AD or polymyositis is similar. A number of patients with a malignancy and muscle weakness or neuropathy have been reported. These associations have been mentioned briefly, but insufficient data are available to determine whether these should be considered as a variant of AD-P or only casually related conditions with certain clinical features in common. Most of the patients described in the literature of AD-P with an associated malignancy have had skin lesions; a minority only have lacked this feature. However, unless a patient is followed carefully, it is possible for a transient or evanescent erythema or insignificant skin lesions to be present and not recorded in the case record.
 ...
PMID:Acute dermatomyositis-polymyositis and malignancy. 85 19

A 69 year old man presented with painful proximal muscle weakness which clinically simulated polymyositis. Further evaluation revealed normal muscle enzymes and hypophosphatemia which resulted from unsuspected antacid abuse. "Pseudo-myopathy" is one example of the myriad of rheumatic diseases which may be mimicked by hypophosphatemia.
 ...
PMID:Antacid-induced hypophosphatemia: an unusual cause of "pseudo-myopathy". 88 94

Thirty-one polymyositis patients treated with low-dose corticosteroid were age and sex matched with 31 polymyositis patients treated with high-dose corticosteroid. Although disease severity at onset of the study was similar in the groups, no statistically significant difference in survival was found. The death rate in each group was greater than normal. The presence of dysphagia or severe muscle weakness lessened the chances of survival. Controlled trials with other drugs should be carried out.
 ...
PMID:Survival in polymyositis: corticosteroids and risk factors. 88 99

The production of energy in muscle from long-chain fatty acid oxidation is dependent upon the presence of carnitine. An abnormally low level of muscle carnitine, as seen in patients with the carnitine deficiency syndrome, results in marked muscle weakness. Muscle from 83 consecutive patients undergoing diagnostic muscle biopsy was assayed for carnitine. Carnitine levels (mean +/- SEM, expressed as nmoles carnitine per mg noncollagen protein) in muscle from patients with Duchenne dystrophy (8.1 +/- 1.7) and possible Becker dystrophy (10.6 +/- 3.0) were significantly (P less than 0.001) different from histologically normal muscle (24.0 +/- 1.4). Carnitine levels in patients with limb-girdle dystrophy (16.1 +/- 3.1) and polymyositis/dermatomyositis (16.6 +/- 3.2) were also low, although not as low as in Duchenne dystrophy. Carnitine levels from patients with denervation atrophy (22.1 +/- 3.6), nonspecific fiber atrophy (21.3 +/- 1.3), and a group of miscellaneous neuromuscular diseases (20.4 +/- 1.4) were not significantly different from histologically normal muscle. The low values of carnitine seen in Duchenne dystrophy and a group of possible Becker dystrophy patients may be a nonspecific effect, related to severe muscle damage.
 ...
PMID:Muscle carnitine levels in neuromuscular disease. 92 14

Fourteen whole-body rectilinear bone scans using technetium 99m-polyphosphate were done in nine patients with well-documented inflammatory myopathy (either polymyositis or dermatomyositis). In all nine patients, the scans showed evidence of increased muscle labeling. Muscle uptake was markedly increased in one patient, moderately increased in two patients, and minimally increased in six patients. The degree of muscle labeling correlated with the severity of the muscle weakness at the time the scan was done. In four patients, who received high-dose corticosteroid treatment, muscle uptake was decreased following therapy. These findings suggest that radioisotope scanning may be useful in the diagnosis and management of patients with inflammatory muscle diseases.
 ...
PMID:Radioisotope scanning in inflammatory muscle disease. 94 91

In eight women with polymyositis (three patients), systemic lupus erythematosus (SLE) (three patients), rheumatoid arthritis (one patient) and shoulder-hand syndrome (one patient), weakness developed during high dose prednisone therapy. These women were studied using serial functional and manual muscle tests, determination of serum glutamic oxaloacetic transminase (SGOT), creatine phosphokinase (CPK) and serum aldolase levels, and urinary excretion of creatine. Insidious onset of weakness was characteristic. Myalgias were seen in five patients and unusual sudden weakness in two. Weakness was always most severe in the pelvic girdle muscles; there was a lesser involvement of shoulder girdle and distal muscles. Serum muscle enzyme levels were normal in all cases, but urinary creatine excretion was invariably increased and proved to be the most sensitive laboratory indicator for clinical diagnosis and for monitoring patient improvement. Serial urinary creatine excretion and serum enzyme studies were of value in differenting steroid myopathy from a flare of myositis in patients with connective tissue disease. Diagnosis and effective management were achieved by the use of readily available laboratory and clinical procedures without resorting to muscle biopsy.
 ...
PMID:Steroid myopathy in connective tissue disease. 97 43

A 64 year old woman with a past history of panhysterectomy and oophorectomy for carcinoma of the body of the uterus (1950) and partial colectomy for carcinoma of the colon (1971), presented in 1972 with severe weakness of the proximal girdle muscles and histological evidence of polymyositis. A detailed search disclosed no tumor and she was treated with prednisone. Two years later, investigations for iron deficiency anemia revealed two polyps in the colon. Pathological examination of the resected colon disclosed two separate foci of adenocarcinoma and a number of adenomatous polyps. Three months later, further investigations for melena led to the discovery of a gastric carcinoma. Due to the extent of the tumor, she was subjected to gastrectomy. splenectomy, and excision of the tail of the pancreas, but died of postoperative complications. At autopsy, no residual cancer was detected, but a meningioma was found. The association of polymyositis with malignant tumors has been recognized for a long time, but only two previously reported patients have had more than one cancer. Although a causal relationship is difficult to establish, continued vigilance for neoplasms is advocated during the follow-up period.
 ...
PMID:Polymyositis in a patient with multiple neoplasms. 97 62

Two patients with proximal muscle weakness and marked elevations of serum muscle enzymes were initially believed to have polymyositis; however electromyography and muscle biopsies were normal. Both patients were subsequently found to have hypothyroidism. Each regained her muscle strength, and serum enzymes normalized with thyroid hormone replacement. Because muscle weakness and an elevated creatine phosphokinase occur in most patients with hypothyroidism, thyroid dysfunction must be considered in the differential diagnosis of polymyositis.
 ...
PMID:Hypothyroidism presenting as a polymyositis-like syndrome. Report of two cases. 99 45


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>