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[Tyrosine-protein kinase activity in breast neoplasm. Comparison with activity obtained in benign diseases and in normal tissues].
- Source :
-
Revista medica de Chile [Rev Med Chil] 1995 Feb; Vol. 123 (2), pp. 165-75. - Publication Year :
- 1995
-
Abstract
- Tyrosine protein kinase (TPK) activity is associated to malignant cellular transformation. This work compares TPK activity in 27 surgical biopsy samples of mammary carcinoma, 10 samples of fibroadenomas, 13 samples of fibrocystic breast disease and 27 samples of normal mammary tissue. TPK activity was determined in tissue homogenates using (Val5) angiotensin II as exogenous substrate. In samples of mammary carcinoma, TPK activity was 33.86 +/- 31.98 pmol P32/mg protein/30 min. This value was significantly higher that those observed in fibrocystic disease (3.92 +/- 2.35), fibroadenomas (13.86 +/- 10.9) and normal tissue (3.56 +/- 3.02).
- Subjects :
- Adult
Aged
Analysis of Variance
Breast Neoplasms pathology
Cell Transformation, Neoplastic
Female
Fibroadenoma pathology
Fibrocystic Breast Disease pathology
Humans
Middle Aged
Regression Analysis
Breast enzymology
Breast Neoplasms enzymology
Fibroadenoma enzymology
Fibrocystic Breast Disease enzymology
Protein-Tyrosine Kinases metabolism
Subjects
Details
- Language :
- Spanish; Castilian
- ISSN :
- 0034-9887
- Volume :
- 123
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Revista medica de Chile
- Publication Type :
- Academic Journal
- Accession number :
- 7569456