Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0019204 (hepatocellular carcinoma)
 71,386 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Isozyme patterns of alkaline phosphatase (ALP) were electrophoretically examined in human cell lines derived from one hepatoblastoma, five hepatocellular carcinomas (HCCs) and two cholangiocellular carcinomas. Most of the cell lines tested had a liver-type ALP isozyme. In addition, an abnormal ALP isozyme, which was similar to variant ALP, was detected in one hepatoblastoma and two HCC cell lines. One HCC cell line of these variant-like ALP-positive cell lines was alpha-fetoprotein (AFP)-negative. These findings suggest that variant-like ALP may be useful for the identification of human hepatoma cell lines, especially in AFP or albumin-negative cell lines.
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PMID:Alkaline phosphatase expression in human cell lines derived from primary hepatomas. 256 37

Eight permanent human hepatocellular carcinoma (HHC) cell lines were established from 8 individual patients by the use of aspirated needle biopsy specimens (smaller than 0.1 ml in size). The cells grew in clustered form and retained intercellular junctions and canaliculi resembling bile canaliculi. The presence of secreted human alpha-fetoprotein and human albumin was detected in the cultured medium. Hepatitis B surface (HBs) antigen was not found on these cells. Implantation of the cells into athymic mice was followed by the growth of hepatocellular carcinomas and the appearance of human alpha-fetoprotein in the mouse serum. Chromosome analysis of three of the cell lines showed hyperdiploidy in two of them and hypotetraploidy in the other. Enzyme analyses of culture medium and cell homogenates have detected some enzymes characteristic of liver tissue such as gamma-glutamyl transferase, sorbital dehydrogenase, alkaline phosphatase, glutamate dehydrogenase, as well as aspartate and alanine transaminase. These tumor cells have been continuously maintained in culture for over 6 years with no significant changes observed.
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PMID:Culturing of human hepatocellular carcinoma. A simple and reproducible method. 257 38

The mortality rate from hepatic failure after extensive resection should be negligible in the presence of normal results from preoperative liver function tests in patients without pre-existing hepatitis and cirrhosis. Despite conventionally acceptable results from preoperative hepatic function tests in 56 patients undergoing extensive hepatic resection for tumours (47 metastatic, six hepatomas and three adenomas), however, five patients died of hepatic failure. Among the many preoperative and intraoperative risk factors studied, the important factors in the group with hepatic failure were very high levels of serum alkaline phosphatase (p less than 0.05) in the presence of normal levels of bilirubin and large tumor, preoperative administration of chemotherapy, the presence of hepatomas rather than metastatic carcinoma (p = 0.083) and intraoperative blood loss of greater than 5,000 milliliters (p = 0.03). The patients receiving preoperative chemotherapy or those with hepatoma showed a minimal rise of alkaline phosphatase (p less than 0.03) and a minimal regeneration of liver on computed tomographic (CT) scan after hepatic resection. In the group with hepatic failure, a consistent postoperative pattern of increasing bilirubin with normal or subnormal alkaline phosphatase levels corresponded with lack of regeneration of liver on repeated CT scans. Conversely, the pattern of decreasing bilirubin with reciprocal increase in alkaline phosphatase corresponded with hepatic regeneration on CT scan in the group of survivors. Thus, we observe that alkaline phosphatase is a good indicator of hepatic regeneration in the absence of jaundice in patients after hepatectomy. To avoid postoperative hepatic failure, we recommend more discriminant tests than conventional hepatic function tests in patients with large tumors associated with high alkaline phosphatase levels, preoperative chemotherapy and hepatoma even without pre-existing cirrhosis or hepatitis.
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PMID:Risk factors before hepatectomy, hepatic function after hepatectomy and computed tomographic changes as indicators of mortality from hepatic failure. 274 Sep 65

The different distribution of cytochemically demonstrable enzymes: lactate dehydrogenase (LDH, 1.1.1.27), succinate dehydrogenase (SDH, 1.3.99.1), dihydrofolate reductase (DHFR, 1.5.1.3), acid phosphatase (AcP, 3.1.3.2) and alkaline phosphatase (ALP, 3.1.3.1), has been documented in Yoshida ascites hepatoma cells in vivo or stored at 80 degrees C. The dehydrogenase activities (LDH, SDH, DHFR) show a strong reaction in all samples. An increased level of these enzyme activities has been observed in the malignant cells spreading through the organs of tumor bearing rats. On the contrary, in the same samples, acid and alkaline phosphatase activities are very low. The strong dehydrogenase activities observed in Yoshida ascite cells stress the rapid turnover of tumor cells. Our results indicate that the histochemical method may be a useful tool to detect the scattered tumor cells. Furthermore, the cytochemical methods allow the characterization of the metabolic pathways employed by the primary and disseminated tumor cells.
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PMID:[Cytochemical study of cells of primary and disseminated ascite Yoshida tumor cells]. 276 51

To further define the clinicopathologic features and determinants of survival, we reviewed the cases of 110 patients with primary hepatic malignancy managed surgically between 1975 and 1986. Presenting signs of symptoms were pain (57%), fatigue (48%), abdominal mass (40%), and weight loss (33%). Twenty-six percent of patients had a history of hepatitis or cirrhosis. Histopathologically, tumors were hepatocarcinoma (72%), fibrolamellar variant (7%), cholangiocarcinoma (9%), mixed (7%), and other (5%). Resectability rate with curative intention was 67%. Exploration and biopsy alone was performed in 27% and palliative resection in 6%. Hospital mortality was 9%, and serious morbidity was 22%. Perioperative morbidity and mortality were significantly associated with operative blood loss. Median survival was 12.6 months, with a 5-year survival of 18%. Median survival after curative resection was 22.8 months, and 5-year survival was 27%. Univariate analysis showed that female sex, normal performance status, well-differentiated tumor, and curative resection were associated with increased survival; cholangiocarcinoma, nodal metastases, cirrhosis, hypocalcemia, prolonged prothrombin time, and increased serum transaminase and alkaline phosphatase were associated with decreased survival. Cox multivariate analysis showed that curative resection, normal performance status, and well-differentiated tumors were associated with increased survival, and prolonged prothrombin time and hypocalcemia were associated with decreased survival.
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PMID:Primary hepatic malignancy: surgical management and determinants of survival. 279 50

Human urinary bladder carcinoma cells (JTC-32) retain a low alkaline phosphatase activity. Prednisolone or a hypertonic concentration of NaCl caused a moderate increase in the activity (10- to 15-fold of control), but dibutyryl cAMP or butyrate did not. Examination of the combined effect of these four agents revealed that they acted synergistically in any combination. When the cells were incubated with the four agents together, the enzyme activity increased 60- to 250-fold. Serum also contributed to this synergistic increase. These agents slightly inhibited cell growth and protein synthesis. The enzyme induction was completely inhibited by cycloheximide or actinomycin D. The synergistic effect of the four agents on the enzyme activity was also observed in other strains of carcinoma cells, human urinary bladder carcinoma cells (JTC-30) and monkey hepatocarcinoma cells (NCLP-6E). Thus, it is concluded that the coexistence of the four agents provides general and superior conditions for the induction of alkaline phosphatase in cultured carcinoma cells.
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PMID:Induction of alkaline phosphatase activity by synergistic action of dibutyryl cyclic adenosine monophosphate, prednisolone, butyrate and sodium chloride in cultured cells. 283 93

DU-PAN-2 is a high-molecular-weight glycoprotein defined by a murine monoclonal antibody (MAb) elicited against a human pancreatic adenocarcinoma cell line. This MAb recognizes an oncofetal antigen present on the surface of normal pancreatic and bile-duct epithelium, normal bronchus epithelium, and some adenocarcinomas. Elevated levels of the antigen (greater than 400 U/ml) have been detected in the serum of 79% of patients with adenocarcinoma of the pancreas and in a small percentage of patients with other adenocarcinomas, by means of a competition radioimmunoassay. Here, we have studied DU-PAN-2 antigen levels in sera of patients with a spectrum of hepatobiliary diseases and controls. Serum DU-PAN-2 antigen was elevated in 59% of 112 patients with non-malignant hepatobiliary diseases and in 50% of hepatoma patients. None of 50 healthy controls had elevated serum DU-PAN-2 levels. Patients in every category of hepatobiliary disease studied had elevated median serum DU-PAN-2 levels; the highest median levels were seen in patients with primary biliary cirrhosis (1,296 U/ml) and the lowest in stable cirrhosis (300 U/ml). Elevated serum DU-PAN-2 levels in one patient with primary biliary cirrhosis and in one patient with hepatoma returned to normal following liver transplantation. Serum DU-PAN-2 levels did not correlate well with alkaline phosphatase, 5'-nucleotidase, bilirubin, or alpha-fetoprotein. Using an immunoperoxidase technique on formalin-fixed, deparaffinized liver sections, we showed that DU-PAN-2 MAb reacted heterogeneously with bile-duct epithelium but never stained hepatocytes or hepatoma cells. While serum DU-PAN-2 levels may be useful in detecting and monitoring pancreatic adenocarcinoma, they are not specific for this disease.
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PMID:Detection of an oncofetal antigen (DU-PAN-2) in sera of patients with non-malignant hepatobiliary diseases and hepatomas. 283 18

The serum unsaturated vitamin B12-binding capacity (UBBC), unsaturated transcobalamin (UTC) I, UTC II, UTC III levels, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase activities and bilirubin concentration were estimated in 61 patients with liver diseases (31 with hepatoma, 30 with viral hepatitis). The levels of serum cobalamin, UTC I, UTC III, UBBC, alanine and aspartate aminotransferases, and bilirubin were raised in both hepatoma and viral hepatitis patients. Serum UTC II was reduced in both conditions. Alkaline phosphatase activity was significantly increased in hepatoma. Four significant correlations were observed among these parameters in the hepatoma patients while only one significant correlation was observed in viral hepatitis.
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PMID:Correlation between serum enzymes and serum unsaturated vitamin B12 binding proteins in primary liver carcinoma. 283 86

Characteristics of 5'-nucleotide phosphodiesterase (phosphodiesterase I, EC 3.1.4.1) and alkaline phosphatase (EC 3.1.3.1) activities in tumor cell lines of human and murine origin were examined. Of the 15 cell lines tested, 5'-nucleotide phosphodiesterase activity in 13 cell lines and alkaline phosphatase activity in 10 cell lines were inhibited by N-ethylmaleimide and activated by dithiothreitol (N-ethylmaleimide-sensitive), and suggested to be SH-enzymes. In contrast, the two phosphohydrolases from normal tissues were inactivated by dithiothreitol, but not by N-ethylmaleimide (dithiothreitol-sensitive). There was only one tumor cell line in which both activities were dithiothreitol-sensitive. Human hepatoma PLC/PRF/5 cells appear to possess both types of 5'-nucleotide phosphodiesterase and alkaline phosphatase, and the subcellular distribution of these enzymes in this cell line was investigated. Dithiothreitol-sensitive 5'-nucleotide phosphodiesterase and alkaline phosphatase of PLC/PRF/5 cells were localized in the plasma membrane as in normal tissues, but N-ethylmaleimide-sensitive phosphohydrolases were soluble cytosolic proteins. N-Ethylmaleimide-sensitive 5'-nucleotide phosphodiesterase and alkaline phosphatase activities from other cell lines were also recovered in the cytosol. Molecular masses of cytosolic N-ethylmaleimide-sensitive phosphohydrolases were apparently smaller than their membrane-bound dithiothreitol-sensitive counterparts, as judged from gel filtration. It was concluded that many tumor cell lines lack plasma membrane 5'-nucleotide phosphodiesterase and alkaline phosphatase, but express enzymes with similar activities in the cytosol, with properties clearly distinguishable from enzymes so far characterized.
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PMID:5'-Nucleotide phosphodiesterase and alkaline phosphatase in tumor cells: evidence for existence of novel species in the cytosol. 283 40

The prevalence of variant alkaline phosphatase in the serum of 335 southern African blacks with hepatocellular carcinoma was determined using polyacrylamide gel electrophoresis. The isoenzyme was detected in 2% (seven of 335) of the patients: it could not be found in the serum of 300 matched, healthy individuals or in 56 patients with various benign hepatic diseases. Variant alkaline phosphatase is thus of little use as a diagnostic marker of hepatocellular carcinoma in southern African blacks. The reported prevalence of this isoenzyme in hepatocellular carcinoma ranges between 3% and 31%. Higher frequencies usually are recorded in populations with a low incidence of the tumor, and the lowest frequencies have been found in Chinese patients. Our finding of variant alkaline phosphatase in only 2% of another high incidence population fits this trend. Patients with tumors that secreted the variant isoenzyme had a significantly higher serum total alkaline phosphatase activity than those with tumors lacking this property.
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PMID:The prevalence of variant alkaline phosphatase in hepatocellular carcinoma in southern African blacks. 284 30


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