Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0006826 (cancer)
 1,092,456 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The concept that HLA-linked immune response genes may influence survival of patients with malignant disease has been investigated by performing HLA typing on a series of 150 patients with acute myelogenous leukemia. Patients with A1 and B8 and/or A2 and B12 survival longer than patients without either of these pairs of antigens in association. However, after correction of the statistical probability for the number of A and B locus combinations theoretically possible, these differences are not statistically significant. Clarification of this must await independent analysis of other series and more direct approaches to the study of immune response genes in man.
Cancer 1977 Jun
PMID:HLA linked resistance factors and survival in acute myelogenous leukemia. 26 69

Human melanoma cell membrane tumor-associated antigens (TAA's) were solubilized in an active form by pronase digestion of either a fresh melanoma or cells from a melanoma cell line maintained in tissue culture. Upon elution from Sephadex G-200 column, TAA's solubilized from the melanoma cell line were found in four distinct peaks that had apparent molecular weights of approximately 48,000 (partition coefficient Kd, 0.426), 25,000 (Kd, 0.567)8 17,000 (Kd, 0.699), and 13,000 (Kd, 0.831) daltons, respectively. Fetal antigen activity was found in all but the 13,000-dalton peak. HLA antigen activity was detected in the 17,000-dalton material. TAA's prepared from the fresh tumor source eluted from Sephadex G-200 column with an apparent molecular weight of 14,000-25,000 (Kd, 0.786-0.572) daltons, as did HLA antigens. A partial resolution of the TAA's from the HLA antigens was achieved with the use of DEAE-cellulose chromatography. Results of antigenic stability assays suggested that the TAA structure is stable to prolonged exposure to low pH. Recovery of TAA activity from the strong denaturing agents 5 m urea, 0.5% (wt/vol) sodium dodecyl sulfate, and 4 m guanidine hydrochloride was partially successful. These properties of the TAA's may be useful for further isolation of the TAA's.
J Natl Cancer Inst 1978 Jul
PMID:Solubilization and partial isolation of human melanoma tumor-associated antigens. 27 39

Selective adsorption of several common "monospecific" HLA typing sera with HLA typed platelets, purified B lymphocytes, cultured lymphoid cells, or lymphocytes from patients with active chronic lymphocytic leukemia demonstrated that many of these sera contain antibodies to non-HLA antigens. Antibodies were detected to antigens present on peripheral blood B-lymphocytes, cultured lymphoid cells and leukemic cells from patients with both myelocytic and lymphocytic forms of leukemia but absent from T-lymphocytes and platelets. Since these kinds of antibodies appear to be present in a large proportion of common HLA typing sera, caution should be used in interpreting all data related to HLA antigen expression in leukemia.
Cancer 1977 Jun
PMID:Possible effects of non-HLA antibodies in common typing sera on HLA antigen frequency data in leukemia. 30 30

Melanoma-associated antigens were isolated from human melanoma cells in long-term tissue culture and from the spent culture fluid of these cells propagated in chemically defined, serum-free media. The 3 M KCl extracts from such cells and their concentrated spent culture media elicited specific delayed cutaneous hypersensitivity reactions in patients with malignant melanoma but not in patients with other neoplasms. HLA antigens present in these extracts could be specifically removed by ultracentrifugation in KBr at a density of 1.23 g/ml. Purification of melanoma-associated antigens was achieved by this step, followed by ion-exchange chromatography and preparative isoelectric focusing on Pevikon C870. Another approach is described for the isolation of carcionembryonic antigens from metastatic lesions with an approximately 70% yield utilizing the least denaturing procedures, which avoid lyophilization and involve essentially 0.9% NaCl solution extraction, specific adsorption, elution from concanavalin A Sepharose, and subsequent gel-exclusion chromatography on Ultrogel AcA 22. For effective isolation of carcinoembryonic antigens freely shed from cultured cells derived from a primary colon tumor, a system was devised based on the use of Amicon hollow fiber culture units, in which cultured tumor cells were introduced in the extracapiliary spaces of such a unit. The extracapillary fluid, containing carcinoembryonic antigens but no fetal calf serum components, is removed and further purified by affinity chromatography.
Cancer Res 1977 Aug
PMID:Approaches for the isolation of biologically functional tumor-associated antigens. 30 32

Patients with melanoma who had one or more close relatives with melanoma were studied for their natural-killer-cell (NK) activity against cultured melanoma cells and Chang cells. A high proportion of the patients and their relatives were found to have low NK activity against these target cells. In most of the patients this could not be attributed to general depression of their immune function, since B- and T-cell numbers and the mitogenic response to PHA were within normal limits. The levels of NK activity of the patients and their relatives were found to be significantly correlated, suggesting that the NK activity in these families may have been genetically (or environmentally) determined. Several genetic markers were examined in the patients and their relatives for association with the disease state and NK activity. No association with HLA antigens or ABO blood groups was detected, but there was a low incidence of the Rhesus negative phenotype in the patients (the Rh phenotype had previously been associated with high NK activity). The present results indicate that NK activity has a familial association in families with a high incidence of melanoma, and raise the question whether low NK activity may be one of the predisposing factors in the development of familial melanoma.
Br J Cancer 1979 Jul
PMID:Low natural-killer-cell activity in familial melanoma patients and their relatives. 31 1

We have attempted to focus on several areas that can be practically explored to elucidate the mechanisms accounting for the polymorphism of the human major histocompatibility complex and attendent disease predispositions. In addition to widespread serologic HLA typing of specific populations, diseases, and families, it is important to improve discriminating methods for expoloration of other areas of the HLA supergene, especially those involved in specific immune responsiveness. It may also be necessary to take into account possible modulating effects of the MHC on other recognized human genes. Application of these improved methods to the study of infertile couples, recognized genetic syndromes, and human malignancies may assist in unraveling the immunogenetic enigma of these diseases.
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PMID:HLA and other immunogenetic approaches to the study of diseases in man. 32 31

The adverse reactions mentioned in 267 reports on levamisole are analyzed. Significant adverse reactions are agranulocytosis, skin rash, and febrile illness. They occur in a small subpopulation of patients only, predominantly those with rheumatoid arthritis. Other side effects rarely necessitate discontinuation of treatment. Levamisole did not appear to cause renal or liver toxicity. By means of a questionnaire, cases of blood dyscrasia were analyzed in detail. Agranulocytosis (less than 20% neutrophils) occurs most frequently in patients with rheumatic diseases, in women, and in HLA B27 genotypes. It is spontaneously reversible when treatment is discontinued. The bone marrow is not damaged. Thrombocytopenia has a course similar to that of agranulocytosis but it is very rare. Leukopenia (less than 3000 cells/mm3 but greater than 20% neutrophils) seems to differ from agranulocytosis in a number of ways and is not an indication to discontinue treatment. It is concluded that, if used under the close supervision of a physician, for those clinical situations in which levamisole has proven efficacy, the potential benefit to the patient outweighs the hazards and justifies its use.
Cancer Treat Rep 1978 Nov
PMID:Adverse reactions to levamisole. 36 27

The geographical correlations between the incidence of various cancers and the HLA and ABO antigen frequencies are studied. There is, for example, a positive correlation between breast and colorectal carcinoma and AI, B8 and B12 antigens, and a negative one between prostate carcinoma and B12. The role of the HLA system itself or other genes involved in these associations is discussed. This study gives some evidence of a possible genetic background of susceptibility or resistance to cancer.
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PMID:HLA in populations: an approach for genetical susceptibility to cancer. 42 93

In a study of 13 families prone to Hodgkin's disease, the probands showed significant excesses of the HLA antigens Bw35 (7 cases) and Bw37 (3 cases). Although based on a small number of patients, the results suggest that immunogenetic mechanisms account at least partly for the familial predisposition to Hodgkin's disease.
Int J Cancer 1979 Jun 15
PMID:HLA antigens in familial Hodgkin's disease. 46 11

In 62 patients with testicular germinative tumours and 301 healthy unrelated subjects, 23 HLA antigens of A and B loci were tested. In the group of 40 seminomas the incidence of HLA-Bw35 antigen and in 22 patients with non-seminomas (embryonal carcinomas, teratocarcinoma and mixed forms) the frequency of HLA-A 10 antigen were significantly higher (27.50 vs. 14.28% in the controls, p greater than 0.025; 36.36 vs. 15.28%, p less than 0.025). After correction by multiplying p by the number of typed antigens there was no statistically significant result any more. The causes of dubious results of the studies about the association between HLA and malignancies are discussed.
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PMID:HLA system and testicular germinative tumours. 48 43


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