Consulta: subjectFacets:"Portal hypertension"
Registros recuperados: 3
Data/hora: 04/06/2024 11:12:37

Portal hypertensive response to kinin
Provedor de dados: 42
Autores: Kouyoumdjian,Maria; Nagaoka,Marcia R.; Loureiro-Silva,Mauricio R.; Borges,Durval R.
Portal hypertension is the most common complication of chronic liver diseases, such as cirrhosis. The increased intrahepatic vascular resistance seen in hepatic disease is due to changes in cellular architecture and active contraction of stellate cells. In this article, we review the historical aspects of the kallikrein-kinin system, the role of bradykinin in the development of disease, and our main findings regarding the role of this nonapeptide in normal and experimentalmodels of hepatic injury using the isolated rat liver perfusion model (mono and bivascular) and isolated liver cells. We demonstrated that: 1) the increase in intrahepatic vascular resistance induced by bradykinin is mediated by B2 receptors, involving sinusoidal endothelial and stellate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bradykinin; Hepatic metabolism; Portal hypertension; Bradykinin receptors.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000300008

Increased immunohistochemical expression of YKL-40 in the spleen of patients with portal hypertension
Provedor de dados: 56
Autores: Wang,Dong; Lu,Jian-Guo; Wang,Qing; Du,Xi-Lin; Dong,Rui; Wang,Peng; Zhao,Lei; Jiang,Xue; Yuan,Li-Juan.
YKL-40 has been identified as a growth factor in connective tissue cells and also a migration factor in vascular smooth muscle cells. To a large extent, the increase of serum YKL-40 is attributed to liver fibrosis and asthma. However, the relationship of the expression and clinical/prognostic significance of YKL-40 to the splenomegaly of patients with portal hypertension is unclear. In the present study, the expression of YKL-40 was studied by immunohistochemistry in 48 splenomegaly tissue samples from patients with portal hypertension and in 14 normal spleen specimens. All specimens were quickly stored at -80°C after resection. Primary antibodies YKL-40 (1:150 dilution, rabbit polyclonal IgG) and MMP-9 (1:200 dilution, rabbit monoclonal IgG) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: YKL-40; MMP-9; Splenomegaly; Fibrosis; Portal hypertension; Immunohistochemistry.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000300013

Evaluation of two experimental models of hepatic encephalopathy in rats
Provedor de dados: 56
Autores: García-Moreno,L.M.; Conejo,N.M.; González-Pardo,H.; Aller,M.A.; Nava,M.P.; Arias,J.; Arias,J.L.
The serious neuropsychological repercussions of hepatic encephalopathy have led to the creation of several experimental models in order to better understand the pathogenesis of the disease. In the present investigation, two possible causes of hepatic encephalopathy, cholestasis and portal hypertension, were chosen to study the behavioral impairments caused by the disease using an object recognition task. This working memory test is based on a paradigm of spontaneous delayed non-matching to sample and was performed 60 days after surgery. Male Wistar rats (225-250 g) were divided into three groups: two experimental groups, microsurgical cholestasis (N = 20) and extrahepatic portal hypertension (N = 20), and a control group (N = 20). A mild alteration of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cholestasis; Portal hypertension; Encephalopathy; Behavior; Recognition memory test.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000100019