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Potentiation of carbon tetrachloride hepatotoxicity by pentosan polysulfate in rats BJMBR
Zim,M.C.A.; Silveira,T.R.; Schwartsmann,G.; Cerski,T.; Motta,A..
Few data are available in the literature regarding the effect of pentosan polysulfate (PPS) on normal and fibrotic rat livers. In addition, the combination of PPS and carbon tetrachloride (CCl4) has not been studied so far. The objective of this study was to assess the effect of PPS on rat livers treated or not with CCl4 for the induction of liver fibrosis. The study consisted of four stages: 1) hepatic fibrosis induction with CCl4 (N = 36 rats); 2) evaluation of the effect of PPS on CCl4-induced hepatic fibrosis (N = 36 rats); 3) evaluation of the effect of higher doses of PPS in combination with CCl4 (N = 50 rats); 4) evaluation of the presence of an enzymatic inductor effect by PPS (N = 18 rats) using the sodium pentobarbital test which indirectly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cirrhosis; Fibrogenesis; Hepatic necrosis; Pentosan polysulfate; Carbon tetrachloride.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002001100012
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Intercellular contact-dependent survival of human A549, NCI-H596 and NCI-H520 non-small cell lung carcinoma cell lines BJMBR
Castro,M.A.A.; Schwartsmann,G.; Moreira,J.C.F..
In the present study, we examined the relationship between cell phenotype and cell survival of three human non-small cell lung carcinoma cell lines (A549, NCI-H596 and NCI-H520). Cells in exponential growth at various densities were incubated for 24 h at 37ºC in a 5% CO2 humidified atmosphere and then exposed to UV radiation for 1 min (256 nm, 40 W, source-to-target distance 100 cm). After two days the surviving cells were quantified by sulforhodamine ß staining and DNA fragmentation assay. The differences in UV sensitivity at 60 x 10³ cells/cm² among the cell lines were not related to the proliferative state of the cells but to the extent of intercellular contact. In contrast to A549 and NCI-H596, irradiated NCI-H520 cells presented lower DNA...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Non-small cell lung carcinoma; Cell density; Intercellular contact; Cell phenotype; UV radiation.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000800006
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von Willebrand factor antigen levels in plasma of patients with malignant breast disease BJMBR
Röhsig,L.M.; Damin,D.C.; Stefani,S.D.; Castro Jr.,C.G.; Roisenberg,I.; Schwartsmann,G..
von Willebrand factor (vWF) is a protein that mediates platelet adherence to the subendothelium during primary hemostasis. High plasma vWF concentrations have been reported in patients with various types of cancer, such as head and neck, laryngeal and prostatic cancer, probably representing an acute phase reactant. In the present study we determined the plasma levels of vWF antigen (vWF:Ag) by quantitative immunoelectrophoresis in 128 female patients with breast cancer as well as in 47 women with benign breast disease and in 27 healthy female controls. The levels of vWF:Ag were 170.7 ± 78 U/dl in patients with cancer, 148.4 ± 59 U/dl in patients with benign disease and 130.6 ± 45 U/dl in controls (P<0.005). We also detected a significant increase in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Von Willebrand factor; Breast cancer; Malignancy.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000900004
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Irinotecan and oxaliplatin: an overview of the novel chemotherapeutic options for the treatment of advanced colorectal cancer BJMBR
Grivicich,I.; Mans,D.R.A.; Peters,G.J.; Schwartsmann,G..
Colorectal cancer is one of the most frequent malignancies in humans and an important cause of cancer death. Metastatic colorectal cancer remains incurable with available systemic therapeutic options. The most active cytotoxic drug against this malignancy, the antimetabolite 5-fluorouracil, was developed more than forty years ago, and as a single agent produces responses in only 10 to 15% of patients which in general last less than one year. Efforts to ameliorate these poor results resulted in the 5-fluorouracil/leucovorin combination, which enhances response rates about two-fold, without, however, significantly improving survival rates. The recent emergence of a handful of new 5-fluorouracil analogues and folate antagonists, as well as the topoisomerase I...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Colorectal carcinoma; 5-fluorouracil; Irinotecan; Oxaliplatin.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000900001
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Prevalence of vascular-endothelial growth factor, matrix metalloproteinases and tissue inhibitors of metalloproteinases in primary breast cancer BJMBR
Jobim,F.C.; Xavier,N.L.; Uchoa,D.M.; Cruz,D.B.; Saciloto,M.; Chemello,N.; Schwartsmann,G..
Our objective was to determine the presence of vascular endothelial growth factor (VEGF), matrix metalloproteinase-2 (MMP-2) and MMP-9 and specific tissue inhibitors of matrix metalloproteinase (TIMP-1 and TIMP-2) in tumor samples obtained from patients with primary breast cancer. We attempted to correlate these findings with the status of the sentinel lymph node (SLN) and clinical-pathological characteristics such as age, tumor size, histological type, histological grade, and vascular invasion. Tumor samples from 88 patients with primary breast cancer were analyzed. The immunoreactivity of VEGF, MMP-2, MMP-9, TIMP-1, and TIMP-2 in tumors was correlated with clinical and pathological features, as well as SLN status. Nonparametric, Mann-Whittney,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breast cancer; Vascular endothelial growth factor; Matrix metalloproteinase; Metalloproteinase tissue inhibitors; Sentinel lymph node.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001000018
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Postangioplasty restenosis: a practical model in the porcine carotid artery BJMBR
Caramori,P.R.A.; Eggers,E.E.; Silva-Filho,A.P.F.; Uchoa,D.M.; Jung,F.; Zago,A.C.; Cerski,C.T.S.; Schwartsmann,G.; Zago,A.J..
Transluminal coronary angioplasty is a routine therapeutic intervention in coronary heart disease. Despite the high rate of primary success, restenosis continues to be its major limitation. Porcine models have been considered to be the most adequate experimental models for studying restenosis. One limitation of porcine models is the need for radiological guidance and the expenses involved. The objective of the present study was to adapt an experimental model of angioplasty in the porcine carotid artery that does not require radiological equipment. Eight animals were used to develop the technique of balloon injury to the common carotid artery by dissection without radiological guidance. This technique was then employed in six other animals. Under...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arterial injury; Intimal hyperplasia; Restenosis; Percutaneous transluminal coronary angioplasty.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000900007
Registros recuperados: 6
Primeira ... 1 ... Última
 

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