Eighty rats out of 233 developed malignant tumors in the stomach and small intestine by administration of 100 micrograms/ml N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) in drinking water for 28 weeks. Fifteen lesions (30%) among the 50 small intestinal carcinomas showed ossification in the tumor, while none in the sarcomas (12 lesions) or gastric adenocarcinomas (59 lesions) showed ossification. Multifocal heterotopic bone formation was found within stroma in close approximation to the neoplastic glands. The islands of bone trabeculae were covered by osteoblast-like cells, and abundant fibroblasts in loose stroma gathered around the bony islands which enclosed osteocytes in lacunae. Neither osteoclast nor cartilage was identified. In 5 cases, ossification was extensive, which comprised the major portion of the stroma. In contrast, intraluminal calcification without ossified foci were occasionally seen in the gastric carcinoma. Ossification of the intestinal tumors correlated to the degree of mucin content (p<0.05, chi square with Yates' correction), degree of neutrophilic infiltration (p<0.05), and size of the tumor (p<0.1). (The average size of the ossified tumor was 21.5 +/- 4.0 mm, while that of nonossified tumors was 12.5 +/- 1.9 mm). The degree of tumoral necrosis, desmoplasia or depth of invasion did not seem to be related to the ossification of the tumor. The ossification rate of this experimental model was much higher than in human cases. Various histologic alterations, such as mucin leakage, inflammatory cell infiltration, necrosis and/or fibrosis, which might be caused by continuous stimulation of the strong carcinogen, may play some role in the ossification of experimental tumors.
Adenocarcinoma/chemically induced/*pathology ; Animals ; Intestinal Neoplasms/chemically induced/*pathology ; Intestine, Small/*pathology ; Methylnitronitrosoguanidine ; Ossification, Heterotopic/*pathology ; Rats ; Rats, Sprague-Dawley ; Staining and Labeling ; Stomach Neoplasms/chemically induced/*pathology

OBJECTIVETo study farm compost polluted water that may induce pharyngo-esophageal, gastric and liver carcinoma in chickens.

METHODS280 chickens were randomized into 4 groups: experiment group 100 chickens fed with compost water + NaNO(2) by stomach tube. The other 180 were evenly randomized into 3 control groups (60 each), fed with compost water, NaNO(2) and tap water in the same way. The farm compost was prepared with corn stalks, rice straws, excreta of men and livestock. The compost water, after being nitrosified and acidified, was fed through stomach tube 5 - 7.5 ml/session, twice a week. Besides, a solution consisting of the respective formula of each group added with 3 - 4 L water with pH adjusted to 3 - 4 by 1N HCL was given ad lib to all chickens in each group for 26.5 months.

RESULTSIn the experiment group, there were pharyngo-esophageal carcinoma 16 (16.3%), gastric adenocarcinoma 5 (10.4%) and liver carcinoma 3 (6.3%), in contrast to none in the 3 control groups, showing significant differences (P < 0.01, P < 0.01, P < 0.05).

CONCLUSIONSuccessful simulation of the layout of esophageal carcinoma high morbidity area and the mimic of chicken gastric fluid strongly support our compost etiological hypothesis that the nitrosified and acidified compost water are carcinogenic, very well causing esophageal, gastric and liver carcinoma.

Adenocarcinoma ; chemically induced ; pathology ; Animals ; Carcinoma, Squamous Cell ; chemically induced ; pathology ; Chickens ; Esophageal Neoplasms ; chemically induced ; pathology ; Feces ; Female ; Liver Neoplasms ; chemically induced ; pathology ; Male ; Pharyngeal Neoplasms ; chemically induced ; pathology ; Random Allocation ; Sewage ; adverse effects ; Sodium Nitrite ; toxicity ; Stomach Neoplasms ; chemically induced ; pathology ; Water Pollution, Chemical ; adverse effects

Fundic gland polyps (FGPs) are the most common type of gastric polyps, found primarily in the fundus and body of stomach. Long term use of proton pump inhibitor (PPI) is known to be associated with certain histological changes of the normal gastric mucosa including parietal cell hyperplasia and fundic gland cysts. We experienced a patient who showed spontaneous resolution of multiple FGPs after the cessation of omeprazole. Two years ago, the patient showed only endoscopically confirmed erosive esophagitis without FGPs. Multiple FGPs developed one year after the use of omeprazole and spontaneously disappeared with the cessation of omeprazole.
Aged ; Anti-Ulcer Agents/therapeutic use ; Gastric Fundus/pathology ; Humans ; Male ; Omeprazole/*adverse effects ; Polyps/*chemically induced/*diagnosis ; Stomach Neoplasms/*chemically induced/*diagnosis

Carney triad is a rare syndrome of unknown etiology characterized by having at least two out of three following neoplasms: gastrointestinal stromal tumor, pulmonary chondroma and extra-adrenal paraganglioma. About 100 cases have been reported worldwide. We report a case of Carney triad in a 42-year-old woman presented with a gastrointestinal stromal tumor in the stomach and a malignant functioning paraganglioma in the retroperitoneum that was fatal five years after diagnosis. The gastrointestinal stromal tumor was diagnosed as intermediate-risk of aggressive behavior and diffusely positive for c-kit whereas the retroperitoneal paraganglioma was negative for c-kit. Genetic analyses showed no mutations of KIT, PDGFRA, SDHB, SDHC, and SDHD genes in both tumors. To our best knowledge, this is the first case of Carney triad in Korea.
Adult ; Carney Complex/*chemically induced/complications ; Female ; Gastrointestinal Stromal Tumors/*diagnosis/pathology ; Humans ; Korea ; Paraganglioma/*diagnosis/pathology ; Retroperitoneal Neoplasms/*diagnosis/pathology ; Stomach Neoplasms/*diagnosis/pathology

OBJECTIVETo evaluate the toxicity of Radix Aristolochiae supplied experimental evidence of rational use of drug in clinic.

METHODAfter treatment with small dose Radix Aristolochiae, Guanxin Suhe Wan (with Radix Aristolochiae) and Guanxin Suhe Wan (without Radix Aristolochiae) in different group for a long- term, respectively, the biochemical indicator of PT, ALT, AST, ALB, ALP, Crea and BUN were detected, and the kidney, liver, stomach and urinary bladder were examined by pathologic assaying.

RESULTIn Radix Aristolochiae group and Guanxin Suhe Wan (with Radix Aristolochiae) group, all of biochemical indicator were changed significantly, and hepatonecrosis, renal tubular necrosis, gastric carcinoma and bladder carcinoma were discovered.

CONCLUSIONRadix Aristolochiae and Guanxin Suhe Wan (with Radix Aristolochiae) can damage kidney and liver, and cause gastric carcinoma and bladder carcinoma by intensive toxicity.

Animals ; Aristolochia ; chemistry ; toxicity ; Drugs, Chinese Herbal ; toxicity ; Kidney ; drug effects ; metabolism ; pathology ; Liver ; drug effects ; metabolism ; pathology ; Male ; Rats ; Rats, Sprague-Dawley ; Stomach Neoplasms ; chemically induced ; Urinary Bladder ; drug effects ; metabolism ; pathology ; Urinary Bladder Neoplasms ; chemically induced

OBJECTIVETo evaluate the efficacy and safety of the combination of oxaliplatin and ELF (VP16/CF/5-Fu) regimen in the treatment of patients with advanced gastric cancer.

METHODSOxaliplatin was given at a dose of 100 mg/m(2) i.v. 2 hours D1, calcium folinate (CF) 200 mg/m(2) i.v. 1/2 hour D1 approximately D3, 5-fluorouracil (5-Fu) 500 mg/m(2) i.v. 2 hours D1 approximately D3 and etoposide 100 mg/m(2) i.v. 3 hours D1 approximately D3. Cycles were repeated every 21 days. Efficacy and safety were evaluated every 2 cycles.

RESULTSSixty-nine patients were enrolled into the study. All cases were pathologically confirmed as gastric cancer (adenocarcinoma in 57 cases and signet ring cell carcinoma in 12 cases). 42 patients had newly diagnosed disease, and 27 patients had received previous chemotherapy. 62 patients were analyzed for response (7 complete responses and 25 partial responses) with total response rate 51.61%. The median time to progression was 5.7 months and the median overall survival was 9.2 months. The most common hematologic toxicities were anemia (29.0%), leucopenia (51.2%) and thrombocytopenia (21.2%). No grade 4 and grade 5 hematologic toxicities were observed. The most common non-hematologic toxicities were nausea (46.5%), vomiting (41.1%), peripheral sensory neuropathy (47.1%), and grade 2 alopecia (27.3%).

CONCLUSIONThis oxaliplatin combined with ELF regimen shows good efficacy and acceptable safety in advanced gastric cancer patients. It is worthy to be proved as a suitable alternative regimen in this indication.

Adenocarcinoma ; drug therapy ; pathology ; Adult ; Aged ; Anemia ; chemically induced ; Antineoplastic Agents ; administration & dosage ; adverse effects ; Antineoplastic Combined Chemotherapy Protocols ; adverse effects ; therapeutic use ; Carcinoma, Signet Ring Cell ; drug therapy ; pathology ; Etoposide ; adverse effects ; therapeutic use ; Female ; Fluorouracil ; adverse effects ; therapeutic use ; Humans ; Leucovorin ; adverse effects ; therapeutic use ; Leukopenia ; chemically induced ; Levoleucovorin ; Male ; Middle Aged ; Nausea ; chemically induced ; Neoplasm Staging ; Organoplatinum Compounds ; administration & dosage ; adverse effects ; Remission Induction ; Stomach Neoplasms ; drug therapy ; pathology ; Survival Rate ; Thrombocytopenia ; chemically induced ; Vomiting ; chemically induced

OBJECTIVETo evaluate the efficacy and toxicity of oxaliplatin-based regimen in patients with advanced or metastatic gastric/esophagogastric junction cancer (AGC).

METHODSThe clinicopathological data of a total of 180 patients with AGC were retrospectively analyzed. Responses was evaluated by RECIST criteria, and toxicity were assessed according to the NCI-CTC AE version 3.0.

RESULTS155 patients received mFOLFOX regimen, and 25 patients received regimens of mEOF and CapOX, with a total chemotherapy of 717 cycles with a median of 3 cycles. The therapeutic response was evaluated in 150 patients, showing response rate (RR) of 30.0% and disease control rate (DCR) of 74.0%. The response was evaluated in 103 of 124 patients who received the therapy as 1st line, with RR of 34.0%, DCR of 74.8%, and overall survival of 11.3 months. The major grade III/IV adverse events were leucocytopenia (14.4%), neutropenia (17.8%), thrombocytopenia (3.8%), nausea/vomiting (8.9%), and peripheral neuropathy (2.2%), with no treatment related death.

CONCLUSIONOxaliplatin-based regimen is active and well tolerated in patients with advanced or metastatic gastric/esophagogastric junction cancer.

Adenocarcinoma ; drug therapy ; pathology ; Adult ; Aged ; Antineoplastic Combined Chemotherapy Protocols ; adverse effects ; therapeutic use ; Esophagogastric Junction ; Female ; Fluorouracil ; adverse effects ; therapeutic use ; Follow-Up Studies ; Humans ; Leucovorin ; adverse effects ; therapeutic use ; Leukopenia ; chemically induced ; Male ; Middle Aged ; Nausea ; chemically induced ; Neoplasm Staging ; Neutropenia ; chemically induced ; Organoplatinum Compounds ; administration & dosage ; adverse effects ; therapeutic use ; Remission Induction ; Retrospective Studies ; Stomach Neoplasms ; drug therapy ; pathology ; Survival Rate ; Thrombocytopenia ; chemically induced ; Vomiting ; chemically induced

OBJECTIVETo evaluate the toxicity of Radix Aristolochiae and Radix Inulae, and to supply the toxicity experimental data that Radix Inulae supersedes Radix Aristolochiae in clinic.

METHODA long dose of Radix Aristolochice and Radix Inulae was given intragastrically to rats for six months, then drug withdrawal for a month. The hematology and biochemical indicators were measured, and the pathologic changes of kidney, liver, stomach and urinary bladder were examined.

RESULTThe rats of Radix Aristolochice showed serious toxic responses of renal tubule atrophy and necrosis, meanwhile, the levels of BUN, Cr and NAG were increased obviously. Hepatonecrosis, renal tubular necrosis, gastric carcinoma and bladder carcinoma were discovered with pathologic assaying. But the rats of Radix Inulae did not.

CONCLUSIONRadix Aristolochiae could damage kidney and liver, and cause gastric carcinoma and bladder carcinoma by intensive toxicity. Radix Inulae could take the place of Radix Aristolochiae to use in clinic.

Acetylglucosaminidase ; urine ; Animals ; Aristolochia ; chemistry ; Blood Urea Nitrogen ; Creatinine ; blood ; Drugs, Chinese Herbal ; isolation & purification ; toxicity ; Female ; Inula ; chemistry ; Kidney Tubules ; drug effects ; pathology ; Liver ; drug effects ; pathology ; Male ; Necrosis ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Stomach ; drug effects ; pathology ; Stomach Neoplasms ; chemically induced ; Urinary Bladder ; drug effects ; pathology ; Urinary Bladder Neoplasms ; chemically induced

OBJECTIVETo evaluate the effectiveness and safety of the combination chemotherapy of capecitabine (X) with fractionated administration of cisplatin (C) in Chinese patients with advanced gastric cancer (AGC).

METHODS141 patients with AGC were enrolled between July 2002 and August 2004. All patients had measurable tumor according to the criteria of RECIST, Karnofsky performance status > or = 60, adequate bone marrow, renal and hepatic functions. Prior radiotherapy or adjuvant chemotherapy was not permitted. Patients received oral administration of capecitabine at a dose of 1000 mg/m(2) twice a day on D1-D14, and intravenous infusion of fractionated cisplatin at a dose of 20 mg/m(2)/day on D1-D5. The regimen was repeated every 3 weeks, totally for 6 cycles.

RESULTSOf the 141 evaluable patients, there were 104 men and 37 women, with a median age of 54 years (range, 23 - 80 years). Metastases before chemotherapy were detected in lymph nodes (46.8%), liver (40.4%), lung (5.7%) and other area (10.6%). The median treatment duration was 6 cycles (range, 3 - 6 cycles). The objective response rate (RR) was 36.2% (51/141). The median follow-up period was 17.5 months. The median time to progress (TTP) was 9.0 months, and the median overall survival (OS) was 12.0 months. The most common treatment-related adverse events (grade 3/4) were: hand-foot syndrome (HFS) (2.1%), leucopenia (0.7%), abnormal alanine transaminase elevation (2.8%). There was no treatment-related death.

CONCLUSIONCapecitabine combined with fractionated cisplatin is highly effective and well tolerated as a first-line treatment for advanced gastric cancer, with comparable results to 5-Fu plus cisplatin combination therapy.

Adult ; Aged ; Aged, 80 and over ; Antineoplastic Combined Chemotherapy Protocols ; adverse effects ; therapeutic use ; Capecitabine ; Cisplatin ; administration & dosage ; adverse effects ; Deoxycytidine ; administration & dosage ; adverse effects ; analogs & derivatives ; Female ; Fluorouracil ; administration & dosage ; adverse effects ; analogs & derivatives ; Follow-Up Studies ; Foot Dermatoses ; chemically induced ; Hand Dermatoses ; chemically induced ; Humans ; Leukopenia ; chemically induced ; Liver Neoplasms ; drug therapy ; secondary ; Lung Neoplasms ; drug therapy ; secondary ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Staging ; Remission Induction ; Stomach Neoplasms ; drug therapy ; pathology ; Survival Rate ; Vomiting ; chemically induced ; Young Adult

OBJECTIVEThe combination of oxaliplatin and S-1 is effective in patients with advanced gastric cancer. The purpose of this study was to analyze the safety and compliance of this combination regimen as adjuvant chemotherapy in patients with gastric cancer.

METHODSClinical data of 71 patients with gastric cancer treated with oxaliplatin plus S-1 as adjuvant chemotherapy in the Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) from Jan 1(st), 2010 to Jan 1(st), 2012 were retrospectively reviewed. The types and incidence rate of adverse events related to chemotherapy and the results of follow up of the patients were analyzed.

RESULTSAmong the 71 cases, 17 were treated with oxaliplatin biweekly, while 54 with oxaliplatin triweekly. The most common adverse events were neutropenia (n = 49, 69.0%), nausea/vomiting (n = 51, 71.8%), and anorexia (n = 49, 69.0%). The most frequent grade 3-4 toxicities were neutropenia (n = 13, 18.3%), thrombocytopenia (n = 10, 14.1%), anorexia (n = 5, 7.0%) and nausea/vomiting (n = 4, 5.6%). Seven (87.5%) of the 8 patients previously treated with neoadjuvant chemotherapy experienced thrombocytopenia in the postoperative adjuvant chemotherapy, and four (50%) of the 8 patients experienced grade 3-4 thrombocytopenia. The rates of grade 3-4 adverse events in patients aged 65-years or older were similar to that in younger patients.

CONCLUSIONSThe combination of oxaliplatin and S-1 used as adjuvant chemotherapy is well tolerated by patients with gastric cancer. Neutropenia, thrombocytopenia, nausea/vomiting and anorexia are the major treatment-related adverse events. Patients who received neoadjuvant chemotherapy do not well tolerate this regimen as postoperative adjuvant chemotherapy. This combination regimen has a manageable tolerability profile in adjuvant setting in patients ≥ 65 years old.

Adenocarcinoma ; drug therapy ; pathology ; surgery ; Adult ; Aged ; Anorexia ; chemically induced ; Antineoplastic Combined Chemotherapy Protocols ; adverse effects ; therapeutic use ; Chemotherapy, Adjuvant ; Drug Combinations ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Nausea ; chemically induced ; Neoadjuvant Therapy ; Neoplasm Staging ; Neutropenia ; chemically induced ; Organoplatinum Compounds ; administration & dosage ; adverse effects ; Oxonic Acid ; administration & dosage ; adverse effects ; Retrospective Studies ; Stomach Neoplasms ; drug therapy ; pathology ; surgery ; Survival Rate ; Tegafur ; administration & dosage ; adverse effects ; Thrombocytopenia ; chemically induced