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Query: UMLS:C0024623 (gastric cancer)
 36,219 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The author has analysed the incidence of 40 nosological forms of malignant neoplasms among 4 conventionally selected ethnic groups of the Kazakh USSR population, the latter was found to differ from other ethnic groups by a rather high incidence of esophageal cancer. Also, malignant tumors of the stomach, liver, and biliary tract, the lung and bones are not infrequently observed amont the Kazakh population. The representatives of other nationalities inhabiting the Kazakh republic most often develop along with lung and gastric cancer also malignant tumors of the lip, bowel, uranary bladder, skin, mammary gland and female genitalia.
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PMID:[Malignant neoplasms among ethnic groups in the Kazakh SSR]. 15 Jan 25

Brief reviews are presented on the occurrence of N-nitroso (NNO) compounds, the chemistry and kinetics of NNO compound formation from nitrite and amines or amides, the in vivo formation of these compounds (as detected by tumor induction) on feeding nitrite with amines or amides to rodents, and the carcinogenicity for rats of some new nitrosamides. The possible human hazard caused by exposure to specific readily nitrosated compounds is reviewed. Whether NNO compounds might be causing human cancer of various organs (e.g., pancreatic, nasopharyngeal, and esophageal cancer) is discussed. Some of our results in [3H]thymidine incorporation in the rat esophageal epithelium are presented. Nitrosamines that cause esophageal cancer in rats were found to inhibit [3H]thymidine incorporation, both in vivo and in vitro, when esophagi were incubated with nitrosamines. With reference to the hypothesis that human gastric cancer is caused by nitrosamides (e.g., nitrosoureas), certain correlations were examined between gastric cancer and environmental exposure to nitrate, nitrite, and nitrosatable amides. In studies from our laboratory, dried, salted fish, which was treated with excess nitrite at pH 1 and then "denitrosated" at pH O, yielded 16 mg methylurae/kh fish, possibly derived from methylguanidine.
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PMID:N-nitroso compounds: their chemical and in vivo formation and possible importance as environmental carcinogens. 32 17

The therapeutics on gastrointestinal cancer including only randomized clinical trials carried out in Western Europe and in the EORTC are reported. The studies on preoperative radiotherapy in resectable esophagus cancer and on chemotherapy associated to radiotherapy in nonresectable esophagus cancer has just been activated. The data of a trial on the treatment of gastric cancer have demonstrated the efficacy of long term 5-FU administered after postoperative irradiations. A trial on the immunostimulating effect of levamisole as adjuvant treatment of colon cancer is described, as well as the results of chemotherapy in advanced colon cancer. Finally, scribed, as well as the results of chemotherapy in advanced colon cancer. Finally, the preliminary results of two European trials studying the effect of preoperative radiotherapy and of a chemotherapy, used as a preoperative irradiation sensitizer in rectal cancer, are commented on.
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PMID:Clinical trials on gastrointestinal cancer in Western Europe and in the FORTC. 65 75

The experimental induction of gastric cancer was studied in four dogs given oral administration of N-ethyl-N'-nitro-N-nitrosoguanidine (ENNG) in solution. Esophageal cancer with the regional lymph node metastasis was found in one dog at autopsy, with concomitantly existing gastric cancer. This dog, which ingested a total amount of about 38 g of ENNG, died of weakness on the 513th experimental day. Three remaining dogs are still living and under observation.
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PMID:Induction of esophageal cancer associated with gastric cancer in a dog by N-ethyl-N'-nitro-N-nitrosoguandine. 122 22

We examined whether or not preoperative impaired bactericidal activities of polymorphonuclear neutrophils (PMN) are associated with infections following surgery for esophageal cancer. Intracellular killing (KI), superoxide anion-producing capacity (SOP), and myeloperoxidase (MPO) activity were measured in 22 patients with esophageal cancer, 27 with gastric cancer, and 13 age-matched controls. The average level of KI was significantly depressed in patients with esophageal cancer or with gastric cancer, to a similar extent, compared to findings in controls, but SOP was not. In esophageal cancer patients, the SOP level was significantly higher in those with postoperative septic complications than in those without such problems, whereas the KI level was depressed to a similar extent in both. Therefore, a depression of KI with elevation of SOP of PMN may serve to predict complications of infection following surgery in patients with esophageal cancer.
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PMID:Impaired neutrophil bactericidal activity correlates with the infection occurring after surgery for esophageal cancer. 133 19

Based on the previous data which indicated a preoperative decrease in cell-mediated immunity (CMI) is associated with the occurrence of infectious complications following surgery on patients with esophageal cancer, we examined possible factors contributing to a decrease in CMI levels. A multiple linear regression analysis was made on data from 76 patients with esophageal cancer and 53 with gastric cancer as the control. In patients with esophageal cancer, both protein-calorie malnutrition (PCM) and age factor contributed to a decrease in CMI, although the contribution of the latter was weak while the stage of the cancer and the grade of dysphagia showed no such contribution. The PCM and stage of the cancer were contributing factors in patients with gastric cancer. Thus, these results indicate that PCM and old age, and not the presence of malignant tumors, play a significant role in deficiency in CMI in patients with esophageal cancer.
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PMID:Factors contributing to deficiencies in cell-mediated immunity in esophageal cancer patients. 139 29

An X-ray examination of the gastrointestinal tract was performed on 56 patients with systemic cutaneous disease that is often considered associated with internal malignancies. Found were one case of esophageal cancer, two cases of gastric cancer, and two cases of colon cancer. The prevalence of gastric and colon cancer in these patients showed a statistically significant increase compared to the general population. The rate of gastric cancer was 16.26 times higher than the general population and that of colon cancer 32.26. X-ray examination of the gastrointestinal tract in patients with systemic cutaneous disease is useful for detecting malignancy.
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PMID:[X-ray examination of the gastrointestinal tract in systemic cutaneous disease]. 141 Sep 41

Potentiation of cytotoxic effects of 5-fluorouracil (5-FU) were investigated by simultaneous or sequential combination of l-leucovorin (LV) against human esophageal cancer cell line (TE-1, TE-2) and 23 human clinical cancer samples in vitro. LV enhanced the cytotoxic effects of 5-FU on human esophageal cancer cell line as a dose dependent manner, and increased the cytotoxic effect of 5-FU about 1.5-fold with 10 microM and about 2-fold with 100 microM. The incubation time did not affect the effects. The potentiation with LV was also demonstrated against human clinical cancer samples, and the cytotoxic effects of 5-FU increased 7.6% in esophageal cancer, 20.9% in gastric cancer and 25.5% in colorectal cancer. As a result, the potentiating effects of LV against 5-FU seemed to be limited on human esophageal cancer.
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PMID:[Experimental study of biochemical modulation of 5-fluorouracil with l-leucovorin against human esophageal cancer]. 141 7

Age-standardized rates for cancer in Kingston & St. Andrew, Jamaica are presented by site and sex, and compared with data from Registries in the Caribbean and adjacent regions. These comprise Costa Rica, Cuba, Cali (Colombia), Martinique, the Netherlands Antilles (excluding Aruba), New Orleans (Whites and Blacks) and Puerto Rico. There are significant differences which demand explanation. Overall, the reported rates are highest in New Orleans, which leads in breast cancer, tumours of bronchus, larynx, colon, rectum, pancreas, prostate and bladder. Lymphomas occur most frequently in Whites in New Orleans while Blacks in that city show similar rates to other Registries in the area. Cali (Colombia) and Costa Rica lead in cervical cancer, with Jamaica third. The lowest figure is for Whites in New Orleans. Cali (Colombia) and Costa Rica also have very high rates for gastric cancer, and low rates for colonic. Oesophageal cancer is highest in Blacks in New Orleans, followed by Martinique and the Netherlands Antilles. Jamaica has shown a steady decline for this site over 30 years. The rate in Whites in New Orleans is only one-fourth of that in Blacks.
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PMID:Cancer in the Caribbean and environs. A comparison of age-standardized rates for 9 population groups. 144 50

Based on data providing evidence that the enhancement of serum IgG and IgA is associated with the occurrence of infectious complications following surgery in patients with esophageal cancer, we examined the possible factors contributing to alterations in the serum IgG, IgA, IgM, C3, C4, and CH50 levels. A multiple linear regression analysis was made on data obtained from 71 patients with esophageal cancer and 57 with gastric cancer. In the patients with esophageal cancer, age and protein-calorie malnutrition (PCM) were related to the elevation of IgG levels while the stage of cancer was linked to that of IgA. The sex and IgM levels were also seen to be related. Age and the stage of cancer were associated with reductions in C3, C4, and CH50 levels, although in the patients with gastric cancer, the stage of cancer and elevations of these complement levels were related. Thus, age, PCM, and tumor malignancy are all factors related to the enhancement of IgG or IgA in patients with esophageal cancer.
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PMID:Increases in immunoglobulin and complement in patients with esophageal or gastric cancer. 147 94


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