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You searched for:"Maria Antonieta Longo Galvão Silva"
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Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(5):249-253
DOI 10.1590/S0100-72032009000500008
PURPOSE: to compare the expression of tumor necrosis factor-alpha (TNF-α) in ovular membranes with premature rupture (MPR) and with opportune rupture; to verify the association between the expression of the TNF-α in ovular membranes and the degree of chorioamnionitis, correlating the expression of the TNF-α and the membranes' time of rupture. METHODS: ovular membranes from 31 parturients with MPR, with gestational ages over 34 weeks, and from parturients with opportune membranes' rupture, with gestational ages equal or over 37 weeks. Chorioamnionitis detection has been done by histopathological analysis. The evaluation of the TNF-α expression has been done by immune-histochemical technique, using the labile streptavidin-biotin-peroxidase (LSAB) method. RESULTS: the average rupture time was 16.6 hours. The ratio of the TNF-α expression in the Control and Study Groups did not show a significant difference (χ2=6.6; p=0.08). In the Study Group, there was no correlation between the degree of chorioamnionitis and the intensity of TNF-α expression (Spearman's coefficient (Rs)=0.4; p=0.02). CONCLUSIONS: there was no significant difference between the TNF-α expression in ovular membranes with premature or opportune rupture; in the Study Group, there was significant association between TNF-α expression and the degree of chorioamnionitis, and there was no association between rupture time and the intensity of TNF-α expression.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(5):249-253
DOI 10.1590/S0100-72032009000500008
PURPOSE: to compare the expression of tumor necrosis factor-alpha (TNF-α) in ovular membranes with premature rupture (MPR) and with opportune rupture; to verify the association between the expression of the TNF-α in ovular membranes and the degree of chorioamnionitis, correlating the expression of the TNF-α and the membranes' time of rupture. METHODS: ovular membranes from 31 parturients with MPR, with gestational ages over 34 weeks, and from parturients with opportune membranes' rupture, with gestational ages equal or over 37 weeks. Chorioamnionitis detection has been done by histopathological analysis. The evaluation of the TNF-α expression has been done by immune-histochemical technique, using the labile streptavidin-biotin-peroxidase (LSAB) method. RESULTS: the average rupture time was 16.6 hours. The ratio of the TNF-α expression in the Control and Study Groups did not show a significant difference (χ2=6.6; p=0.08). In the Study Group, there was no correlation between the degree of chorioamnionitis and the intensity of TNF-α expression (Spearman's coefficient (Rs)=0.4; p=0.02). CONCLUSIONS: there was no significant difference between the TNF-α expression in ovular membranes with premature or opportune rupture; in the Study Group, there was significant association between TNF-α expression and the degree of chorioamnionitis, and there was no association between rupture time and the intensity of TNF-α expression.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2007;29(6):310-316
DOI 10.1590/S0100-72032007000600006
PURPOSE: to evaluate the expression of cyclooxygenase-2 (COX-2) in ductal carcinoma in situ (DCIS), invasive ductal carcinoma (IDC), adjacent normal stroma, and epithelium. The correlation of expression levels with nuclear grade, histological grade, presence or absence of comedonecrosis, tumor size, and patient age was also analyzed. METHODS: forty-seven surgical samples obtained from mastectomy and quadrantectomy with simultaneous DCIS and IDC, stages I and II were included. Anti-COX-2 polyclonal antibodies were used to determine enzyme expression. Samples were classified from zero to three, in accordance with number and intensity of stained cells. RESULTS: COX-2 was positively expressed in IDC, DCIS, and normal epithelium in 86.7, 84.4, and 73.3% of the cases, respectively. Concerning nuclear grade (NG), COX-2 expression was positive in 80% of cases of NG-I; in 81.5 and 78.9% of NG II, and in 88.5 and 96.1% of NG III in DCIS and IDC, respectively. COX-2 expression occurred in 78.9% of DCIS with comedonecrosis and in 89.3% without comedonecrosis. As to histological grade (HG) of IDC, COX-2 was positive in 83.3% of HG-I; 89.9% of HG-II and 80% of HG-III. Concerning tumor diameter, COX-2 was present in 86.1% of IDC cases and in 83.3% of DCIS larger than 2 cm and in 11% of IDC and DCIS tumors ≤2 cm. The age range ≥50 years presented 90% expression for IDC and 86.7% for DCIS, and the expression was 92.5% for both IDC and DCIS in patients <50 years. CONCLUSIONS: our results demonstrated high correlation between COX-2 expression in IDC, DCIS and in the normal epithelium, which is consistent with the hypothesis that COX-2 over expression is an early event in breast carcinogenesis. There was no significant correlation between COX-2 expression in IDC and DCIS and nuclear grade, histological grade, presence of comedonecrosis, age group and tumor size.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2007;29(6):310-316
DOI 10.1590/S0100-72032007000600006
PURPOSE: to evaluate the expression of cyclooxygenase-2 (COX-2) in ductal carcinoma in situ (DCIS), invasive ductal carcinoma (IDC), adjacent normal stroma, and epithelium. The correlation of expression levels with nuclear grade, histological grade, presence or absence of comedonecrosis, tumor size, and patient age was also analyzed. METHODS: forty-seven surgical samples obtained from mastectomy and quadrantectomy with simultaneous DCIS and IDC, stages I and II were included. Anti-COX-2 polyclonal antibodies were used to determine enzyme expression. Samples were classified from zero to three, in accordance with number and intensity of stained cells. RESULTS: COX-2 was positively expressed in IDC, DCIS, and normal epithelium in 86.7, 84.4, and 73.3% of the cases, respectively. Concerning nuclear grade (NG), COX-2 expression was positive in 80% of cases of NG-I; in 81.5 and 78.9% of NG II, and in 88.5 and 96.1% of NG III in DCIS and IDC, respectively. COX-2 expression occurred in 78.9% of DCIS with comedonecrosis and in 89.3% without comedonecrosis. As to histological grade (HG) of IDC, COX-2 was positive in 83.3% of HG-I; 89.9% of HG-II and 80% of HG-III. Concerning tumor diameter, COX-2 was present in 86.1% of IDC cases and in 83.3% of DCIS larger than 2 cm and in 11% of IDC and DCIS tumors ≤2 cm. The age range ≥50 years presented 90% expression for IDC and 86.7% for DCIS, and the expression was 92.5% for both IDC and DCIS in patients <50 years. CONCLUSIONS: our results demonstrated high correlation between COX-2 expression in IDC, DCIS and in the normal epithelium, which is consistent with the hypothesis that COX-2 over expression is an early event in breast carcinogenesis. There was no significant correlation between COX-2 expression in IDC and DCIS and nuclear grade, histological grade, presence of comedonecrosis, age group and tumor size.