Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0023890 (cirrhosis)
 42,195 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The association of HBV infection and glomerular damage was first reported by Combes et al in 1971, in a patient with nephrotic syndrome due to membranous glomerulopathy and chronic hepatitis B. Since, then, other glomerular diseases have been reported such as a) minimal changes nephropathy, b) IgA nephropathy, c) membranous-proliferative glomerulonephritis (MPGN), d) membranous, e) mesangial proliferative and f) lupus nephritis. All of them are associated with chronic hepatic disease and some of the following antigens: 1) HBsAg; 2) HBeAg; 3) HBcAg. These disorders are very frequent in Southeast Asia. Vertical transmission from mothers to fetuses may be important in maintaining the high carrier rate, and possibly plays a role in the development of glomerular damage. On the other hand, MPGN associated with HBsAg has rarely been reported and always with a favorable benign course. The present report describes interesting findings in a renal biopsy from a HBsAg and HBeAg carrier, who developed renal failure requiring hemodialysis. A 21 year old Korean man was admitted to the Hospital for nephrotic syndrome, microhematuria hypertension and renal failure. He had no previous history of blood transfusion, intravenous drug addiction, jaundice or liver disease. His father was HBsAg carrier with hepatic cirrhosis. An ultrasound examination showed normal renal size. Renal biopsy was performed and the patient received hemodialysis treatment. The specimen was processed for light microscopy, immunofluorescent studies and peroxidase-antiperoxidase technique. Frozen sections were studied by direct immunofluorescence for the identification of IgG, IgA, C1q, C3, fibrinogen and albumin. Paraffin sections stained by immunoperoxidase technique for HBsAg, using polyclonal monospecific rabbit anti-Human antisera (Dakopatts, Copenhagen).(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:[Membranoproliferative glomerulonephritis with semilunar forms and massive deposits of IgA associated with HBsAg]. 229 14

The purpose of this paper is to provide a histopathologic basis for abnormalities in immune-complex clearance in liver disease. Fc receptors in CCl4-induced liver cirrhosis in rats were studied by applying peroxidase-antiperoxidase immunoglobulin G complex as a ligand to the frozen sections. Intravenous injection of bovine serum albumin-antibovine serum albumin complexes or colloidal carbon was combined with histological staining for endogenous peroxidase, fibronectin, laminin, or a lectin, Bandeiraea simplicifolia agglutinin I. In the cirrhotic process, sinusoidal Fc receptors showed a weakened reactivity to the ligand with focal absence, and the length of the Fc receptor-positive portion of the sinusoids in unit area decreased to about 50% of the normal value in the advanced cirrhosis. Fibronectin and the lectin showed the presence of sinusoids where Fc receptors were absent. The endothelium in Fc receptor-negative areas did not take up either immune complexes or carbon, and Kupffer cells were absent in these areas. A disturbed immune-complex metabolism was thus suggested to occur in association with the defect of sinusoidal Fc receptors in liver cirrhosis. These abnormalities appeared to not be directly related to perisinusoidal laminin deposition, i.e., capillarization of the sinusoid.
 ...
PMID:Defect of sinusoidal Fc receptors and immune complex uptake in CCl4-induced liver cirrhosis in rats. 234 26

Aggregation and derangement of cytokeratin intermediate filaments are thought to be the key mechanism in the formation of Mallory bodies in alcoholic liver disease (ALD). To study the incidence and patterns of intracellular distribution of aggregated cytokeratin and to determine its utility as a diagnostic marker of ALD, 108 liver biopsy specimens from patients with various liver abnormalities were examined by an avidin--biotin peroxidase complex technique on paraffin section using a monoclonal antibody to cytokeratins (Hybritech). In normal liver (n = 11), only bile duct epithelium was positive. Both bile ducts and hepatocytes were positive in pathologic livers (n = 97). In ALD, 82 per cent of cases (42 of 51) showed cytokeratin positivity versus 15 per cent (seven of 46) in nonalcoholic liver disease (e.g., chronic hepatitis, nonalcoholic cirrhosis, cholestasis, and primary biliary cirrhosis). The highest incidence (100 per cent, 37 of 37) of positivity was obtained in cases with alcoholic hepatitis and cirrhosis compared with only 36 per cent (five of 14) in alcoholic fatty liver. Mallory bodies were found by the immunoperoxidase method in 71 per cent of cases (30 of 42) versus in 40 per cent (17 cases) by hematoxylin--eosin stain. In alcoholic fatty liver and alcoholic hepatitis, centrilobular hepatocytes showed cytokeratin positivity, whereas such reactivity was seen predominantly at the periphery of the regenerative nodules in alcoholic cirrhosis. A rare periportal hepatocyte was positive in the nonalcoholic group. These findings suggest that the differential distribution patterns of aggregated cytokeratin may be helpful in differentiating alcoholic from nonalcoholic liver diseases.
 ...
PMID:Distribution patterns of cytokeratin antigen determinants in alcoholic and nonalcoholic liver diseases. 243 6

A new solid phase enzyme-linked immunosorbent assay (ELISA) was developed for the quantitation of human Factor VII antigen (F VII Ag), using a monospecific rabbit anti-F VII antiserum. Anti-F VII F(ab')2 fragments were adsorbed to polystyrene plates. The binding of serial dilutions of control or test plasma, containing F VII, was detected by incubation with peroxidase-labeled anti- FV II IgG followed by the addition of hydrogen peroxyde and O-phenylenediamine. This ELISA is specific, sensitive (detection limit: 0.05%) and accurate (coefficient of variation: 1.5-4% for within- and 1.6-9% for between-assays). F VII coagulant activity (F VII C) and F VII C) and F VII Ag were determined in large populations of controls and patients. In normal plasma (n = 38), F VII Ag ranged from 83 to 117% and the correlation coefficient between F VII Ag and F VII C was 0.94. In patients with severe (F VII C inf. 1%) congenital F VII deficiency (n = 5), F VII Ag was undetectable in two cases (inf. 0.05%) and markedly reduced (0.35 to 5.6%) in the three other cases. In patients with liver cirrhosis (n = 15), F VII Ag ranged from 21% to 59% and was in good correlation with F VII C (r = 0.84). In dicoumarol treated patients (n = 15), the levels of F VII Ag ranged from 51% to 79% and a poor correlation (r = 0.52) with F VII C was observed.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:An enzyme immunoassay (ELISA) for the quantitation of human factor VII. 243 28

Alpha-fetoprotein (AFP) synthesis in non-malignant liver tissue of 34 patients with chronic hepatitis or liver cirrhosis, some of whom also had hepatocellular carcinoma (HCC), was studied by light and ultrastructural immunohistochemistry using peroxidase-labeled anti-human AFP. Simultaneously, the serum level of AFP was measured in these patients by radioimmunoassay. AFP-positive cells were identified in non-malignant liver tissue of 7 patients with elevation of serum AFP. AFP was demonstrated in several hepatocytes which were clustered in hepatic lobules, and also in some bile ductular cells which were distributed in the periphery of portal tracts. In an immunoelectron microscopic study of AFP-positive hepatocytes, dense reaction products of anti-AFP were localized in the membranes and cisternae of rough endoplasmic reticulum (r-ER), perinuclear space (PNS) and Golgi apparatus. The prominent feature of AFP-positive hepatocytes was abundant r-ER encompassing many mitochondria. As to AFP-positive bile ductular cells, they had scanty cytoplasm and few intracytoplasmic organelles and were surrounded by basement membrane. AFP was focally localized in the r-ER of such bile ductular cells. These observations suggest that AFP can be produced by malignant and non-malignant liver cells and that in non-malignant liver tissues, AFP can be produced by two distinct cell types; bile ductular cells and hepatocytes themselves.
 ...
PMID:Immunoelectron microscopic observation of alpha-fetoprotein synthesis in human non-malignant liver tissues using immunoperoxidase methods. 246 Mar 91

An antibody-lectin enzyme immunoassay (EIA) technique was developed for the analysis of sugar chains of serum alpha-fetoprotein in various liver diseases. The anti-'alpha-fetoprotein'-IgG was coated on a microtiter plate and then treated with periodic acid. A serum sample was added to the plate and then a 'peroxidase'-conjugated lectin was added. The amount of lectin bound to the sugar chain of the 'alpha-fetoprotein' was estimated from the 'peroxidase' activity. The 'peroxidase' activities of 4 different lectins, LCA, Con A, LCA and EPHA, were compared. The LCA/'wheat germ agglutinin' activity ratio and LCA/EPHA activity ratio were increased in liver diseases and LCA/'wheat germ agglutinin' ratio showed a statistically significant difference between the chronic hepatitis and the liver cirrhosis groups (p less than 0.05). Furthermore, when serum samples were pretreated with sialidase, a statistically significant difference was observed in the LCA/EPHA and LCA/Con A ratios between the chronic hepatitis and the hepatoma groups (p less than 0.05). These results indicated that low sialylation at the non-reduced end of the sugar chains of 'alpha-fetoprotein' occurs in liver cirrhosis and that high fucosylation at the reduced end of N-acetylglucosamine residue of 'alpha-fetoprotein' occurs in hepatomas.
 ...
PMID:Alpha-fetoprotein antibody-lectin enzyme immunoassay to characterize sugar chains for the study of liver diseases. 246 50

HBsAg, HBcAg and AFP in small liver cancer (less than or equal to 5 cm) and adjacent non-neoplastic liver tissue were assayed by peroxidase-antiperoxidase (PAP) method. The positive rates of HBsAg, HBcAg and AFP in liver cancer tissue were 13.8% (9/65), 9.2% (6/65) and 75.0% (42/56), while those in the uninvolved liver tissue were 93.3% (97/104), 46.2% (48/104), 66.1% (37/56), respectively. 3.6% (2/56) of cancer tissue and 33.9% (19/56) of unaffected liver tissue were found to have these three markers simultaneously. Pathologically all showed chronic hepatitis changes, and 66.3% (69/104) of them had cirrhosis. The development of liver cancer may be associated with HBV/DNA integration, but it does not rule out the possibility of HBV replication in the canceration. The phenotype patterns of HBAg possess variable clinical significance and HBV replication affects the long time survival of the patients with liver cancer. The results show that both cancer foci and their surrounding tissue could secrete AFP, and the AFP positive rate in liver cancer with negative sero-AFP is 30% (3/10). The sensitivity of assaying HBsAg in PAP method was 1.4 times as high as that of R-PHA or orcein stain. Small liver cancer is a valuable material to the study of human liver cancer.
 ...
PMID:[Immunohistochemical study on HBsAg, HBcAg and AFP in 104 patients with small liver cancer]. 247 May 64

The anti-pre-S antibody in the samples of sera from normal healthy persons and patients with different clinical types of liver diseases due to hepatitis B virus (HBV) infection was detected by a newly established enzyme-linked immunosorbent assay technique. This test is a blocking assay where anti-pre-S antibody in the patient's serum blocks subsequent addition of horse radish peroxidase-labelled polymerized human serum albumin (pHSA) to the pHSA-receptor site of HBsAg molecules fixed on a solid surface. Anti-pre-S activity was not detected in any from 95 healthy persons who were negative for all HBV-markers or from 105 healthy HBV carriers. In 12 sera from HBV vaccine recipients, anti-pre-S activity was noted in higher proportions compared with anti-HBs, after both the second and third doses of vaccine. Anti-pre-S activity was detected in small proportions of HBsAg positive sera from acute viral hepatitis (4.2%) and chronic active hepatitis (10%). In subacute viral hepatitis patients, the anti-pre-S antibody was totally absent. However, anti-pre-S activity was recorded in high proportions of HBsAg-positive sera from patients with cirrhosis of liver (57.2%) and fulminant hepatitis (41.6%). The anti-pre-S antibodies were assumed to be implicated in the clearance of HBV particles from circulation without causing tissue damage.
 ...
PMID:Anti-pre-S antibodies in different groups of patients with hepatitis B virus infection. 249 Sep 40

Monoclonal antibodies were used in one step sandwich enzyme immunoassay (one step sandwich EIA) for human serum immunoreactive type IV collagen. The one step sandwich EIA using either polystyrene ball or microplate was characterized by carrying out two immunoreactions simultaneously, type IV collagen reacting with both a monoclonal antibody as a solid phase and a horseradish peroxidase-labeled monoclonal antibody (Fab') against human type IV collagen as a conjugate. Sensitivity of one step sandwich EIA system by using either polystyrene ball or microplate was 0.22 ng per tube or 0.04 ng per well for type IV collagen, and linearity was obtained between 0.22-40 ng/tube or 0.04-20 ng per well, respectively. Both methods gave reproducible quantitative analysis of immunoreactive type IV collagen levels in the sera of patients with hepatocellular carcinoma and patients with liver cirrhosis, which were apparently higher than the levels in the sera of healthy subjects. Protein immunoblotting shows that the immunoreactive type IV collagen trapped in our present one step sandwich EIA system was not the 7-S and NC1 domains of type IV collagen.
 ...
PMID:One step sandwich enzyme immunoassay for human type IV collagen using monoclonal antibodies. 254 37

Rabbit antiserum to Pre-S1 protein was used to establish peroxidase-antiperoxidase (PAP) and avidin-biotin-peroxidase complex (ABC) immunohistochemical techniques for detection of Pre-S1 protein in paraffin-embedded liver tissue. Pre-S1 protein could be expressed in hepatocyte cytoplasm and on membrane in some cases with chronic viral hepatitis, cirrhosis and hepatocellular carcinoma (HCC), and its expression was intimately associated with HBsAg, HBcAg in liver and HBV DNA in serum, indicating that pre-S1 protein may represent the essential component of hepatitis B virus (HBV) and also serve as one of the markers of HBV infection. The incidence of Pre-S1 protein was slightly lower in nontumorous liver of HCC than in other cases and Pre-S1 protein could not be detected in tumorous tissue of HCC suggesting that expression of pre-S1 protein may be suppressed in HCC cases.
 ...
PMID:A preliminary study on expression and significance of pre-S1 protein in liver tissue of patients with HBV infection. 276 Sep 66


<< Previous 1 2 3 4 5 6 Next >>