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Query: UMLS:C0005684 (bladder cancer)
 16,431 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Age-standardized incidence rates of cancer of the larynx in men from 1965-1969 were 14.7/100,000/year in the city of Torino and 8.4 in the non-metropolitan area of the province. These rates are among the highest in Europe. The geographical distribution of cancer of the larynx has been investigated in the non-metropolitan area considering two geographical entities, i.e., the 291 towns and the 12 ecological zones/subzones of the area. The incidence of cancer of the larynx in men was unrelated to the population of towns in 1961, whereas it was positively correlated to indexes of general industrialization as well as to those related to industrialization in the mechanical processes. Tobacco and alcohol consumption have not been taken into account. In order to validate the methodology, the investigation was extended to bladder cancer and to cancer in the children. The former was correlated with general and chemical + rubber industrialization, whereas the latter was not correlated with any industrial process.
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PMID:Descriptive epidemiology of cancer of the larynx in the province of Torino, Italy. 74 94

The diagnostic value of the CEA test was evaluated in 2,029 blood and urine samples from 308 patients with urologic cancer, 13 with nonurologic cancer, 20 urologic patients with nonmalignant disease, and in 30 controls. The blood CEA test was positive in 50% of the patients with active urologic cancer and in 35% of those with inactive cancer. The urine CEA test was elevated only in patients with active bladder cancer, but most of these had concurrently infected urines. At the present time, the CEA test does not reflect the accuracy necessary for an acceptable diagnostic test for the detection of urologic cancer.
Natl Cancer Inst Monogr 1978 Dec
PMID:The carcinoembryonic antigen test in urologic cancer. 74 73

Cure following surgery of bladder cancer is limited by recurrence of the original tumor or by the development of new primary tumors. TCC of the bladder induced in C3H/HeJ mice by FANFT closely resemble their human counterpart and have been used to evaluate the effect of chemotherapy and/or BCG on the induction and growth of these tumors. Three hundred five mice were divided into a control group of 30 and 11 treatment groups of 25. Therapy was initiated at 5 and 7 months after FANFT. The first tumors in this system are observed at 8 months with an expected incidence of 70-90% by 11 months. Therapy consisted of: 1) BCG; 2) cyclophosphamide; 3) cyclophosphamide + BCG; 4) cyclophosphamide + 5-FU; 5) cyclophosphamide + adriamycin; and 6) adriamycin. All mice were killed after 11 months on FANFT. Bladders were wieghed and the tumors were staged. Tumor incidence was reduced by only two regimens: adriamycin and cyclophosphamide + adriamycin. Cyclophosphamide significantly reduced subsequent tumor volume compared with the control group, with the effect being more pronounced in mice beginning treatment at 5 months. The combination regimens were superior to cyclophosphamide alone. BCG did not potentiate the antitumor action of cyclophosphamide and, when used alone, actually enhanced tumor growth (P less than 0.025). The use of BCG immunotherapy should be cautioned, but the effectiveness of the antineoplastic drugs suggests their use in clinical trials in patients with bladder cancer.
Natl Cancer Inst Monogr 1978 Dec
PMID:Effectiveness of long-term chemotherapy and/or BCG on murine bladder cancer. 74 88

As an introduction to the session on Animal Tumor Models, a concept of animal model systems in presented that differentiates between models of organ-related diseases such as prostate or bladder cancer and models of a certain class of neoplasms found within a specific organ disease. Thus defined, no one animal tumor can completely represent and be predictive for a disease entity, no more so than can a single clinical experience with prostate cancer, e.g., be representative of all clinical cases. Rather, a block of animal tumors originating from a specific organ that reflects a spectrum of carefully defined growth patterns and reactivities best mimics the overall responses obtained clinically. Because immunotherapy is most logically visualized and applied in an adjuvant mode, its effectiveness as a therapeutic modality is vulnerable to the vagaries of individual tumor response to a primary modality. Therefore, the selection of appropriate tumor models for developmental studies in immunotherapy is critical, and the need for well-defined and characterized test systems in terms of chemotherapy and radiation responsiveness is emphasized.
Natl Cancer Inst Monogr 1978 Dec
PMID:Predictive experimental animal tumor models: a concept. 75 24

Thromboplastic and fibrinolytic activities of 14 lines of cultured human cancer cells were estimated by modified Astrup's methods. High tissue thromboplastic activity was found in one line of urinary-bladder cancer, 2 lines of gastric cancer and one line of lung cancer, but no activity was found in 6 lines of lung cancer. High fibrinolytic activity was noted in one line of gastric cancer and 2 lines of lung cancer, but no activity was seen in 6 lines of lung cancer and one line of gastric cancer. No plasmin activity was found. The tumour cell lines could be classified into 3 groups on the basis of the 2 activities. Cancer cell lines could also be classified into 2 groups: with high or low release of thromboplastin into culture media. Fibrinolytic activity was found in the culture media of all cell lines with high fibrinolytic activity. Fibrinolytic activity, but not thromboplastic activity, seemed to be influenced by the constituents of culture media. No definite correlation was found between the 2 activities and the histological types of the parent tumours of the cultured cells.
Br J Cancer 1979 Jan
PMID:Thromboplastic and fibrinolytic activities of cultured human cancer cell lines. 75 28

Incubation in vitro of lymphocytes from bladder cancer patients with levamisole (40 microgram/ml) resulted in a rise of the number of E-rosette forming cells from 39.2 +/- 11.8% to 57.5 +/- 11.3% (p less than 0.005). The same effect was observed when levamisole was administrated 150 mg/day for 3 days to the patients. The stimulatory effect of levamisole was abrogated when the lymphocytes were first incubated with levamisole and afterwards with 50% autochthonous serum from the patient. With more diluted serum concentrations (from 0.5% to 1%), the response decreased, and the response was not observed with allogeneic serum. When lymphocytes from healthy donors were incubated with 50% serum from bladder cancer patients, there were no significant changes in numbers of E-rosette forming cells. It was presumed that the suppression of E-rosette forming cells from the patients with bladder cancer was caused by blocking the receptor sites for sheep red blood cells by autochthonous serum components and that levamisole eliminated such substances from the cryptic sites on the surface of the lymphocytes.
Cancer 1979 Jan
PMID:Restoration by levamisole of E-rosette formation and its abrogation by autochthonous serum from patients with bladder cancer. 76 Nov 78

We attempted to isolate a carcinogenic substance from bracken fern (Pteridium aquilinum), a naturally occurring toxicant responsible for the production of chronic enzootic hematuria and urinary bladder cancer of cattle and carcinogenic for various target organs of several species. Hot methanol extracts of bracken fern were solubilized in water and extracted with chloroform followed by a mixture of n-butanol-butanone (1:1). That fraction was dried and triturated with ether-methanol (4:1), n-butanol, and finally absolute ethanol. The insoluble residue was dissolved in 10% aqueous methanol and passed through Dowex 1 OH-, Dowex 50 H+, or Dowex 1 OH- and then Dowex 50 H+ ion exchange resins. A condensed tannin, isolated from one ot the fractions, was identical to that isolated from bracken fern by the caffeine procedure used for the separation of tannins from other plant constituents. Three systems were used for bioassay; induction of bladder carcinoma by implantation of cholesterol pellets containing bracken fern fractions into the bladder lumens of mice; acute toxicity by ip injection of brachen fern fraction into mice; and growth inhibition of Escherichia coli. The following fractions induced significantly greater incidences of bladder carcinoma than did cholesterol pellets only: tannin, Dowex 50 H+, residue, n-butanol, and methanol. Tiliroside, a component of bracken fern fractions into the bladder lumens of mice; acute genic acid, and quercetin were not carcinogenic. Tannin was the most toxic (mean lethal dose: 0.16 mg/g) and carcinogenic. None of the carcinogenic fractions inhibited growth of E. coli.
J Natl Cancer Inst 1976 Jan
PMID:Identification of carcinogenic tannin isolated from Bracken fern (Pteridium aquilinum). 76

A nonhuman primate species infected with Schistosoma haematobium provided a model system for controlled studies on biharzial bladder cancer. Urinary excretion of tryptophan metabolites by capuchin monkeys (Cebus apella) was similar to that of humans when expressed per g creatinine. Liver tryptophan oxygenase activity of the capuchin monkeys was comparable to that of humans. Excretion of 3-hydroxykynurenine and 3-hydroxyanthranilic acid was elevated above control levels in capuchin monkeys infected experimentally with S. haematobium. The capuchin-S. haematobium system closely resembles the human biharziasis system and offers a reproducible laboratory model system for the controlled study of the parasitology, pathogenesis, and biochemistry of biharzial bladder cancer.
J Natl Cancer Inst 1976 Jan
PMID:Experimental biharzial bladder cancer: tryptophan metabolism in nonhuman primates experimentally infected with Schistosoma haematobium. 81 56

Five cynomolgus monkeys (Macaca fascicularis) were infected with Schistosoma intercalatum, a helminth that is morphologically similar to Schistosoma haematobium. Infections were readily established and remained active until the monkeys were sacrificed 21 to 84 weeks after exposure. Although the schistosomes were located predominantly in mesenteric and hepatic portal venules, schistosome eggs were found in the bladders of 3 monkeys. Nodules of atypical epithelial cells interpreted as superficially infiltrating undifferentiated bladder carcinomas were found in one monkey 23 weeks after infection. These sessile tumors differ strikingly from the well-differentiated, papillary transitional cell tumors previously reported from several species of experimental animals infected with S. haematobium. The tumors are also dissimilar to the squamous cell bladder tumors associated with S. haematobium infection in man but may nonetheless be useful for investigations of schistosomal bladder cancer.
Cancer Res 1976 Aug
PMID:Proliferative epithelial lesions of the urinary bladder in cynomolgus monkeys (Macaca fascicularis) infected with Schistosoma intercalatum. 81 36

In an evaluation of the use of topical triethylenethiophosphoramide for therapy and prevention of recurrent multiple superficial transitional cell carcinoma of the bladder retrograde cystography was done. Unilateral or bilateral vesicoureteral reflux was demonstrated in 9 consecutive patients studied. Retrospective analysis uncovered 9 additional patients with bladder cancer and reflux. The discovery of vesicoureteral reflux prompts currently unanswerable questions regarding the etiology and pathogenesis of urothelial malignancy, as well as the role of topical chemotherapy in superficial tumors.
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PMID:Vesicoureteral reflux in recurrent carcinoma of the bladder--implications for treatment and prognosis. 82 56


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