Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.2.1.36 (hyaluronidase)
 4,606 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Twenty-three cases of intramuscular myxoma were analyzed clinically and histologically. The mean age of the patients was 54 years, and two-thirds were women. Clinical follow-up of 2 to 17 years' duration revealed no recurrences or metastases. Intramuscular myxoma thus appears to be a completely benign tumor. One patient simultaneously had a myxoma in the muscle of the thigh and a lesion of fibrous dysplasia in the femur. In addition, 14 of 16 patients studied with x-ray had a significantly higher incidence of minor abnormalities in bones as compared with the normal population. The myxomas were characterized histologically by sparse cellularity, abundant intercellular material digestible with hyaluronidase, and lack of mitotic figures. At the ultrastructural level, the tumor cells showed characteristics of fibroblasts and myofibroblasts. Immunohistochemical analysis of intermediate filament proteins revealed vimentin- but no desmin-positivity in the tumor cells, and endothelial cell markers as well as S-100 protein were absent. This is compatible with fibroblastic-myofibroblastic nature of the myxoma cells.
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PMID:Intramuscular myxoma--a clinicopathological study of twenty-three cases. 403 56

We collected a series of 136 lung/bronchial and 56 matched lung parenchyma tissue samples from patients who underwent lung/bronchial biopsies and presented invasive carcinoma after lung surgery. The lung/bronchial samples included basal cell hyperplasia, squamous metaplasia, moderate dysplasia, adenomatous hyperplasia, severe dysplasia, squamous cell carcinoma and adenocarcinoma. Matched lung parenchyma tissue samples included 25 squamous cell carcinomas and 31 adenocarcinomas. Immunohistochemistry was performed to analyze for the distribution of hyaluronidase (Hyal)-1 and -3, and hyaluronan synthases (HAS)-1, -2, and -3. Hyal-1 showed significantly higher expression in basal cell hyperplasia than in moderate dysplasia (P=0.01), atypical adenomatous hyperplasia (P=0.0001), or severe dysplasia (P=0.03). Lower expression of Hyal-3 was found in atypical adenomatous hyperplasia than in basal cell hyperplasia (P=0.01) or moderate dysplasia (P=0.02). HAS-2 was significantly higher in severe dysplasia (P=0.002) and in squamous metaplasia (P=0.04) compared with basal cell hyperplasia. HAS-3 was significantly expressed in basal cell hyperplasia compared with atypical adenomatous hyperplasia (P=0.05) and severe dysplasia (P=0.02). Lower expression of HAS-3 was found in severe dysplasia compared with squamous metaplasia (P=0.01) and moderate dysplasia (P=0.01). Epithelial Hyal-1 and -3 and HAS-1, -2, and -3 expressions were significantly higher in pre-neoplastic lesions than in neoplastic lesions. Comparative Cox multivariate analysis controlled by N stage and histologic tumor type showed that patients with high HAS-3 expression in pre-neoplastic cells obtained by lung/bronchial biopsy presented a significantly higher risk of death (HR=1.19; P=0.04). We concluded that localization of Hyal and HAS in lung/bronchial pre-neoplastic and neoplastic lesions was inversely related to malignancy, which implied that visualizing these factors could be a useful diagnostic procedure for suspected lung cancer. Finalizing this conclusion will require a wider study in a randomized and prospective trial.
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PMID:Hyaluronidases and hyaluronan synthases expression is inversely correlated with malignancy in lung/bronchial pre-neoplastic and neoplastic lesions, affecting prognosis. 2635 98