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)

Mouse lymphoma cells in culture which are killed by adrenal steroids contain specific cortisol receptors that may be involved in the initial events of hormone action. The similarity of these receptors to those in hepatoma tissue culture cells, where adrenal steroids induce tyrosine aminotransferase, suggests that certain aspects of steroid action are similar in the two systems. In three steroid-resistant lymphoma cell populations specific binding was less than in the parent lines, suggesting that conversion to steroid resistance may be associated with changes in specific steroid binding.
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PMID:Glucocorticoid receptors in lymphoma cells in culture: relationship to glucocorticoid killing activity. 439 30

The ascites fluids from patients with hepatoma or ovarian tumor and the pleural fluid from patients with malignant lymphoma elicited fatty acid release in slices of rat adipose tissue in vitro. The lipolytic factor, named toxohormone-L, was isolated from the ascites fluid of patients with hepatoma. The isolated preparation gave a single band on both disc gel electrophoresis and sodium dodecyl sulfate (SDS)-acrylamide gel electrophoresis in the presence of beta-mercaptoethanol. Its molecular weight was determined to be 70,000-75,000 and 65,200 by SDS-acrylamide gel electrophoresis and analytical ultracentrifugation respectively. Injection of toxohormone-L into the lateral ventricle of rats significantly suppressed food and water intakes. There was at least a 5-hr delay between its injection and the appearance of its suppressive effect.
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PMID:Isolation of a lipolytic factor (toxohormone-L) from ascites fluid of patients with hepatoma and its effect on feeding behavior. 609 Jan 49

Murine tumors contain low molecular weight factors that inhibit macrophage accumulation at inflammatory foci. Certain oncogenic murine leukemia viruses contain similar inhibitory activity and the active component of the retroviruses was shown to be the envelope protein P15E. A number of murine malignant and nonmalignant cell lines, as well as primary tumors, have now been examined to determine whether production of retroviral P15E or a related protein is characteristic of neoplastic cells. Tumor lines examined included the Hep 129 hepatocarcinoma, BP8 fibrosarcoma, RL1 lymphoma, and three variants of the B16 melanoma. Tumor lines were virus negative by electron microscopy. Nonmalignant cells examined included ST0, 3T3/BALB, and 3T3/L1 fibroblasts and unstimulated, as well as mitogen-stimulated murine splenocytes. Cells were pulse-labeled with [35S]methionine, proteins immunoprecipitated with two monoclonal antibodies to P15E and analyzed by SDS-PAGE and gel fluorography. All tumor lines synthesized a approximately 19,000-dalton protein that co-migrated with retroviral P15E on SDS-PAGE. None of the nonmalignant cells synthesized this protein. Two-dimensional gel electrophoresis of the proteins precipitated from two B16 melanoma lines by monoclonal anti-P15E showed them to be physicochemically similar to P15E from Rauscher leukemia virus. A competition ELISA assay for P15E was developed and confirmed the results obtained by metabolic labeling and demonstrated P15E-related antigens in the tumor cell lines and also in the ascites fluid of mice injected with Hep 129 cells. More importantly, P15E antigens were expressed in both a spontaneous mammary adenocarcinoma and in a primary methylcholanthrene-induced fibrosarcoma. Nonmalignant tissues from animals bearing these tumors contained no detectable P15E antigen. Extracts from the primary fibrosarcomas, when injected into the thighs of mice, inhibited the intraperitoneal accumulation of inflammatory macrophages. The inhibitory activity was specifically removed by absorption with monoclonal antibody to P15E. These results suggest that synthesis of the immunosuppressive retroviral protein P15E, or a very similar protein, routinely occurs during the growth of murine neoplastic cells. This P15E-related protein is present in spontaneous murine primary tumors as well as in all murine tumor cell lines tested. The expression of such proteins by transformed cells in vivo could confer a selective advantage for their sustained growth since they would be more likely to escape immune surveillance.
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PMID:Murine malignant cells synthesize a 19,000-dalton protein that is physicochemically and antigenically related to the immunosuppressive retroviral protein, P15E. 619 38

Peripheral blood lymphocytes from lymphomatous or control Papio hamadryas monkeys were incubated in the presence of KCl-extracted proteins prepared from allogeneic lymphomatous or normal lymph nodes and from a spontaneous baboon hepatoma. Only the lymphomatous baboon lymphocyte-lymphoma antigen interaction product(s) significantly reduced the anodic electrophoretic mobility of guinea pig macrophages.
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PMID:Lymphocyte sensitization detected in lymphomatous hamadryas baboons by the macrophage electrophoretic mobility assay. 624 91

A patient with hepatitis B induced chronic active hepatitis and cirrhosis had hepatocellular carcinoma and poorly differentiated lymphocytic malignant lymphoma localized in the liver. Whereas a close relationship between hepatitis B viral infection, chronic active hepatitis, macronodular cirrhosis, and hepatocellular carcinoma is now recognized, no such association has been reported with primary hepatic malignant lymphoma, which is a distinctly rare entity. In a large autopsy population that we reviewed systemic malignant lymphoma rarely occurred in association with cirrhosis. Such an association has been noted in other studies, however. We speculate half if an association exists between malignant lymphoma and cirrhosis it might have an immunologic basis such as seen in certain autoimmune diseases.
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PMID:Primary hepatic malignant lymphoma: its occurrence in a patient with chronic active hepatitis, cirrhosis, and hepatocellular carcinoma associated with hepatitis B viral infection. 624 91

The role of adrenocorticotropin, cortisol, and corticosterone on chemical carcinogenesis was investigated using the rat aflatoxin B1 hepatocarcinoma model. The animals were divided into untreated controls and various experimental groups receiving the carcinogen alone or the carcinogen with a hormone. Animals lost during the treatment period died mostly of massive hepatic necrosis. The results following 65 weeks of observation show that: (1) hormones decrease the toxicity of aflatoxin B1; (2) adrenocorticotropin possibly exerts its influence on aflatoxin B1 hepatocarcinogenesis through adrenal stimulation, and (3) in aflatoxin B1-adrenocorticotropin treated animals, hepatocellular carcinoma, cholangiocarcinoma, and malignant lymphoma may be observed.
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PMID:Hormonal influences on chemical carcinogenesis: studies with the aflatoxin B1 hepatocarcinoma model in the rat. 625 37

Thirty patients with metastatic malignancy of various types were treated with cis-diamminedichloroplatinum(II) (DDP) administered by continuous infusion for 120 hours. The starting dose was 20 mg/m2/day (100 mg/m2/course) and was escalated by stages to 40 mg/m2/day (200 mg/m2/course). Dose-limiting toxicity was observed at 30 mg/m2/day (150 mg/m2/course), manifested as marrow suppression and particularly thrombocytopenia in 13 of 14 patients evaluated at doses greater than or equal to 30 mg/m2/day. The gastrointestinal toxicity characteristic of bolus treatment schedules was less intense but was cumulative and dose-related. Renal toxic effects developed in five of 30 patients in spite of adequate hydration and daily diuretic therapy. Peripheral neuropathy developed in the only two patients who received four courses of continuous-infusion DDP. Antitumor effects were observed in six patients (oral cancer, two; lymphoma, one; prostatic cancer, one; hepatoma, one; and bronchogenic carcinoma, one). The recommended starting dose for continuous venous infusion therapy with DDP is 30 mg/m2/day for 5 days.
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PMID:Phase I study of cis-diamminedichloroplatinum(II) administered as a constant 5-day infusion. 625 73

VP-16-213 (etoposide) is an orally and parenterally active antineoplastic agent synthesized from podophyllum extracts of a common North American plant, the May apple or mandrake. The drug delays and kills cells in the G2 phase of the cell cycle and is active in a variety of animal tumors and leukemias. Major therapeutic activity for the drug has been found in small cell bronchogenic carcinoma, germ cell malignancies, acute non-lymphocytic leukemia, Hodgkin's disease and non-HOdgkin's lymphoma. Minor therapeutic activity of the drug occurs in non-small cell bronchogenic carcinoma, pediatric neoplasms, hepatocellular carcinoma and gastric cancer. Toxicity is primarily hematologic, with alopecia, nausea and vomiting occurring less frequently.
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PMID:VP-16-213 (etoposide): the mandrake root from Issyk-Kul. 627 88

We have cloned a segment of cDNA from human liver coding for an apoferritin subunit, probably an H chain. Sequence comparison with the available protein sequence shows that our clone corresponds to a ferritin subunit present as a minor species in human spleen and placenta, but as major species in HeLa cells. Northern blot analysis shows the existence of only one band of similar size in human liver, HeLa cells, Daudi lymphoma and Hep3B hepatoma cell lines. In contrast, Southern blot analysis provides evidence for a multigene family.
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PMID:Cloning and sequencing of a full length cDNA coding for a human apoferritin H chain: evidence for a multigene family. 632 67

In cytotoxicity and indirect immunofluorescence tests an antiserum to ACA-1 (activated cell antigen) reacted with 58-100% of actively proliferating cells from tumors of lymphoid (EL-4 T lymphoma, MOPC 104E plasmacytoma) and nonlymphoid origin (AH-22 hepatoma, Sa-1 and MCh-11 sarcomas, F2 mammary cancer). Absorption of anti-ACA-1 serum with tumor cells sharply reduced its activity both against the cells of all these neoplasms and against normal activated T and B lymphocytes. Absorption with proliferating murine cells from the brain of embryos and the retina of neonates or with similar (nonproliferating) cells from adult mice did not affect the activity of the antiserum. It is concluded that ACA-1 is expressed on actively proliferating cells of the tumors studied.
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PMID:Expression of the differentiation antigen of activated T and B lymphocytes (ACA-1) on cells of lymphoid and nonlymphoid tumors. 642 51


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