TY - JOUR
T1 - Expression of p21 in SV40 large T antigen positive human pleural mesothelioma
T2 - Relationship with survival
AU - Baldi, A.
AU - Groeger, A. M.
AU - Esposito, V.
AU - Cassandro, R.
AU - Tonini, G.
AU - Battista, T.
AU - Di Marino, M. P.
AU - Vincenzi, B.
AU - Santini, M.
AU - Angelini, A.
AU - Rossiello, R.
AU - Baldi, F.
AU - Paggi, M. G.
PY - 2002
Y1 - 2002
N2 - Background: Mesothelioma is the most commonly occurring primary pleural neoplasm. Several studies have documented an increase in the incidence of this malignancy during the last decades. Although the association between asbestos exposure and development of mesothelioma is generally accepted, the exact mechanism of carcinogenesis is unknown. Recently, Simian virus 40 large T antigen (SV40 Tag) expression has been detected in pleural mesothelioma. The ability of SV40 oncoproteins to inactivate p53 and retinoblastoma tumour suppressor proteins has been proposed as an important step in the pathogenesis of human mesothelioma. Methods: To obtain a better understanding of the molecular mechanisms of the pathogenesis of mesothelioma, the expression of the cell cycle inhibitor p21WAF1/CIP1 (p21), a downstream target of p53, was evaluated immunohistochemically in a group of 29 mesothelioma specimens already chorocterised for the presence of SV40 Tag sequences. Results: Statistical analysis did not reveal any correlation between p21 expression and histopathological type of mesothelioma using the X2 test (p=0.577). A significant positive relationship was found between p21 expression level and the patients' overall survival according to the Kaplan-Meier survival curves and using a log rank test (median difference in survival 7 months, 95% CI 4.8 to 9.9; p
AB - Background: Mesothelioma is the most commonly occurring primary pleural neoplasm. Several studies have documented an increase in the incidence of this malignancy during the last decades. Although the association between asbestos exposure and development of mesothelioma is generally accepted, the exact mechanism of carcinogenesis is unknown. Recently, Simian virus 40 large T antigen (SV40 Tag) expression has been detected in pleural mesothelioma. The ability of SV40 oncoproteins to inactivate p53 and retinoblastoma tumour suppressor proteins has been proposed as an important step in the pathogenesis of human mesothelioma. Methods: To obtain a better understanding of the molecular mechanisms of the pathogenesis of mesothelioma, the expression of the cell cycle inhibitor p21WAF1/CIP1 (p21), a downstream target of p53, was evaluated immunohistochemically in a group of 29 mesothelioma specimens already chorocterised for the presence of SV40 Tag sequences. Results: Statistical analysis did not reveal any correlation between p21 expression and histopathological type of mesothelioma using the X2 test (p=0.577). A significant positive relationship was found between p21 expression level and the patients' overall survival according to the Kaplan-Meier survival curves and using a log rank test (median difference in survival 7 months, 95% CI 4.8 to 9.9; p
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U2 - 10.1136/thorax.57.4.353
DO - 10.1136/thorax.57.4.353
M3 - Article
C2 - 11923556
AN - SCOPUS:0036216714
VL - 57
SP - 353
EP - 356
JO - Thorax
JF - Thorax
SN - 0040-6376
IS - 4
ER -