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Query: UMLS:C0023890 (cirrhosis)
 42,195 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A previous publication suggested that for 9 weeks after portal diversion in dogs, there were no changes in reticuloendothelial function assessed by measurement of t1/2 or phagocytic index of reticuloendothelial test lipid emulsion. The present study was conducted in rats over 18 weeks. It was observed that the phagocytic index decreased and the t1/2 lengthened at 18 weeks after either portacaval shunt or portacaval transposition and that plasma levels of fibronectin were elevated four- or five-fold after either form of diversion, whilst only being elevated two-fold after sham operation. There was an increase in portacaval shunt rats in liver tissue distribution of administered lipid emulsion when tested between 6 and 12 weeks post-operatively which then returned towards normal. The activity in portacaval transposition and sham-operated rats was unaltered. These studies suggest that the delay in clearance of administered particles in portacaval shunt and portacaval transposition rats is related to the portal diversion rather than to altered blood flow and thus the finding is of relevance in patients with cirrhosis who also have significant portacaval shunting.
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PMID:The effect of portal diversion upon function of the reticuloendothelial system and upon plasma fibronectin levels. 292 5

To evaluate the diagnostic accuracy of fibronectin levels in ascites to differentiate malignant from non-malignant ascites, the authors studied 30 patients with sterile uncomplicated ascites in chronic liver disease, 18 patients with malignant ascites and four patients with spontaneous bacterial peritonitis. Fibronectin concentration was significantly higher in malignant ascites than in sterile ascites (P less than 0.001). High values (greater than 85 mg/l) were found in four of six cases of hepatocellular carcinoma in liver cirrhosis with negative cytologic examination, and in six of seven peritoneal carcinomatoses. Low values (less than 85 mg/l) were found in four patients with liver metastases and in one patient with intrahepatic biliary duct carcinoma in cirrhosis. In four patients with infected ascites, the fibronectin level was low. Among all other parameters (total protein concentration, lactate dehydrogenase, gamma-glutamyl-transpeptidase, pH, amylase, triglycerides, leukocyte count, and cytologic examination), fibronectin yielded the best degree of discrimination (diagnostic accuracy, 79%).
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PMID:Diagnostic accuracy of fibronectin in the differential diagnosis of ascites. 302 17

In a study of 142 male alcohol abusers without evidence of cirrhosis the presence of intralobular fibronectin in the liver was investigated in relation to the subsequent development of the disease. All 142 initial biopsy samples showed preserved architecture. During a follow up period of 10-13 years 23 patients (16%) developed cirrhosis. Twelve of 110 patients with normal or slightly increased amounts of parenchymal fibronectin in the initial biopsy specimen developed cirrhosis, whereas eight out of 27 patients with moderately increased amounts and three out of five with significantly increased amounts later developed the disease (p less than 0.005). Semiquantitative assessment of the amount of parenchymal fibronectin at an early stage of alcoholic liver disease is of definite predictive value for the development of cirrhosis.
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PMID:Fibronectin as predictor of cirrhosis in men who abuse alcohol. 313 46

We found a significantly lower plasma fibronectin concentration in cirrhotic patients than in controls, a significant inverse relationship between fibronectin and spleen size, but no correlation between fibronectin and hepatic blood flow, prothrombin time, or serum albumin. We suggest that the increased degradation in the enlarged spleen is more relevant than the decreased synthesis in reducing plasma fibronectin levels during liver cirrhosis with portal hypertension.
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PMID:Fibronectin decrease in liver cirrhosis is related to spleen size. 341 82

The authors examined, in 58 chronic alcoholics, the behaviour of plasma fibronectin, SGPT and seric albumin. Among the patients, ten were without liver damage while the others were affected with alcoholic liver disease at different stages, such as steatosis (12), steatofibrosis (14), evolutive chronic hepatitis (10), cirrhosis (12). The levels of plasma fibronectin appeared significantly increased in the cases with steatofibrosis, evolutive chronic hepatitis and cirrhosis; unimportant changes were noted in the cases with steatosis. SGPT always resulted increased, showing the existence of cytolysis related with plasma fibronectin levels, while seric albumin was constantly reduced with negative ratio to fibronectin levels, except in cases of decompensated cirrhosis. The authors believe that the monitoring of plasma fibronectin in chronic alcoholics may be a suitable means to reveal an increased liver fibrosis.
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PMID:[Plasma fibronectin and alcoholic liver disease]. 345 Dec 92

Three collagen types (I, III and IV) and fibronectin were localized in normal and alcoholic human liver by light and electron microscopy using the indirect immunoperoxidase technique. In normal liver, most of the bundles of collagen fibers stained for type pro-III collagen while only a few reacted for type I. Basement membranes stained for type IV collagen which formed discontinuous discrete deposits in sinusoids. Only fibronectin appeared as an almost continuous layer in the space of Disse. At the intracellular level, hepatocytes were found to contain little type I collagen and large amounts of fibronectin. Fat-storing cells strongly stained for type IV collagen and expressed low amounts of types I and III collagen and fibronectin. Endothelial cells contained low amounts of all the components. Alcoholic livers were studied at three stages: steatosis, fibrosis and cirrhosis. Qualitative and quantitative differences were observed in extracellular and intracellular distributions of matrix proteins. Increased amounts of all components were usually found in fibrotic and cirrhotic livers compared to normal liver. In two fibrotic livers which contained numerous bundles of collagen in the sinusoids, fat-storing cells stained more intensely for type III collagen. In a cryptogenic fibrotic liver, abundant type IV collagen was observed in hepatocytes. These results suggest that hepatocytes, fat-storing cells and endothelial cells are engaged in production of extracellular matrix components in normal human liver. In fibrosis, hepatocytes which normally did not synthesize types III and IV collagen may produce these collagens.
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PMID:Cell types involved in collagen and fibronectin production in normal and fibrotic human liver. 351 7

Surgical bile flow restoration in extrahepatic biliary atresia (EHBA) does not prevent the development of ongoing hepatic fibrosis and cirrhosis. Portal connective matrix was studied on liver biopsies obtained from seven children submitted to portoenterostomy. Electron microscopy and immunohistochemical techniques (using specific antibodies directed against collagen isotypes and associated glycoproteins) were performed. The study of extracellular and cellular components of connective matrix demonstrated the existence of two distinct areas according to their situation with regard to ductular proliferation: loose connective matrix--mainly composed of fibronectin, type III collagen, type IV collagen and laminin--associated with microvessels and myofibroblasts proliferation characterized periportal zones adjacent to bile ductules; in areas distant from ductular proliferation, connective matrix appeared dense, composed of type I and type III collagen associated with fibroblasts. The connective matrix pattern observed in periductular areas can be compared to that described in cicatricial and hypertrophic processes where the myofibroblastic cell population is known to play an important role in fibrosis development. Although the connective matrix activation process remains unclear in EHBA, it may be suggested that activation of a connective tissue cellular clone might be responsible for this portal fibromatosis.
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PMID:Human extrahepatic biliary atresia: portal connective tissue activation related to ductular proliferation. 353 4

Plasma fibronectin (FN) has been measured by immunonephelometric method in 100 cirrhotic patients and compared with that of 77 normal subjects and with that of 57 patients suffering from liver disorders different from cirrhosis. Both, compensated and decompensated cirrhotics had lower plasma FN than controls (31.14 +/- 11.42 and 20.88 +/- 10.43 respectively vs 40.13 +/- 8.58 mg/dl; rho less than 0.02 and rho less than 0.001). FN in ascitic patients was lower than in non-ascitic (rho less than 0.001). These differences were not due to different weight or age of patients. It appears, therefore, that FN parallels in cirrhosis the grade of liver function impairment. No significant difference has been noted between plasma FN of patients with liver diseases different from cirrhosis and control subjects. In cirrhosis, a positive relation has been observed among FN and other parameters of liver function such as serum albumin, cholinesterase activity, fibrinogen and prothrombin time. Plasma FN has a low sensitivity but a high specificity and a good positive predictive value in distinguishing normals and patients with liver disorders different from cirrhosis. This diagnostic value is similar to that of serum albumin.
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PMID:Plasma fibronectin in liver cirrhosis and its diagnostic value. 353 10

Among the patients with liver cirrhosis (LC) who undergo the operation, the postoperative complications are not infrequent and sometimes prove fatal. The impaired hepatic function, especially the impaired reticuloendothelial system (RES) function, has been claimed to be a possible pathogenic factor for these complications. The present experimental and clinical studies were undertaken to investigate the RES function and the effect of preoperative OK-432 administration as an RES potentiator in LC. The results are as follows: 1) CCl4-induced LC rats were evaluated for RES global phagocytic function, Kupffer cell phagocytic function, plasma opsonic activity and plasma opsonic substances such as fibronectin, C3 and IgG. All parameters except IgG showed significant depression compared to those values in normal rats. However, the administration of OK-432 (0.1 KE/rat, ip) improved all these depressed parameters. The OK-432 administration also significantly improved the survival following panperitonitis in LC rats. 2) Among 18 LC patients with hepatocellular carcinoma undergoing partial hepatectomy, the RES global phagocytic function, plasma opsonic activity and plasma opsonic substances were evaluated. Same as the experimental study, all parameters except IgG were significantly depressed among the LC patients compared to those values in the patients with normal liver. However, the preoperative OK-432 administration (5 KE/day sc for 4 days) significantly improved these parameters and consequently decreased the postoperative complications. These results indicate that the preoperative RES activation by the OK-432 was effective and useful for the prevention of the postoperative complications in the LC patients.
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PMID:[Experimental and clinical studies on the effect of reticuloendothelial system (RES) potentiator in the depressed RES function in cirrhotics]. 362 94

We applied a modified enzyme-linked immunosorbent assay (ELISA) for the measurement of human plasma fibronectin and determined the level of plasma fibronectin in 90 patients with various liver diseases and 10 normal subjects. Diagnoses were made by liver biopsy under peritoneoscopy. Plasma fibronectin was significantly decreased in liver cirrhosis patients, but not in acute hepatitis or chronic hepatitis patients. Decreased plasma fibronectin was correlated poorly with 18 laboratory tests, including liver function tests, and inflammatory marker determinations performed prior to peritoneoscopy. A correlation was found between the decreased plasma fibronectin and the severity of fibrotic, inflammatory and necrotic changes of the liver. These results suggested that the level of plasma fibronectin may reflect the severity of tissue injury resulting from chronic liver diseases.
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PMID:Decreased plasma fibronectin in liver diseases correlated to the severity of fibrotic, inflammatory and necrotic changes of liver tissue. 376 3


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