title: [Effects of pirarubicin chemotherapy combined with hyperthermia on gastric cancer in vitro].
abstract: OBJECTIVE
  To evaluate the effect of pirarubicin (THP) in combination with hyperthermia on gastric cancer tissues in vitro and explore the underlying mechanisms.
  
  
  METHODS
  In vitro three-dimensional culture models were established with tissue biopsies from 36 patients with pathologically confirmed gastric cancer. The tumor cell viability was measured by MTS-PMS assay, and HE staining was used to study the histomorphological changes of the tissues following chemotherapy and hyperthermia.
  
  
  RESULTS
  Synergistic tumor cell-killing effects of cisplatin, THP, and mitomycin with hyperthermia was observed in the tumor tissues (P=0.000), and THP exhibited stronger cytotoxic effects than the other drugs. Histomorphological study suggested strong killing effects of THP on the tumor tissues, which displayed disrupted tissue structure, cellular degradation and necrosis, karyopyknosis and karyolysis, with cytoplasm loss. The anti-tumor effects of THP were associated with clinical staging and pathological grading of the tumors (P=0.000), but not with the patients' gender, age, tumor size and preoperative CEA levels (P>0.05).
  
  
  CONCLUSIONS
  Pirarubicin shows good synergistic effects with hyperthermia, and the cytotoxicity of pirarubicin against gastric cancer tissue is enhanced considerably by mild hyperthermia. THP can be a potential therapeutic drug for intraperitoneal chemohyperthermia.
authors.affiliation: Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. wxg@nfhoc.com
authors.forename: Xiao-guang
authors.initials: XG
authors.lastname: Wang
authors.forename: Jun
authors.initials: J
authors.lastname: Fu
authors.forename: Hang
authors.initials: H
authors.lastname: Zheng
authors.forename: Guo-xin
authors.initials: GX
authors.lastname: Li
authors.forename: Rong-cheng
authors.initials: RC
authors.lastname: Luo
mesh_terms: D000230:Adenocarcinoma / Q000188:drug therapy / Q000473:pathology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000970:Antineoplastic Agents / Q000494:pharmacology*; D002470:Cell Survival / Q000187:drug effects; D002945:Cisplatin / Q000494:pharmacology; D004317:Doxorubicin / Q000031:analogs & derivatives* / Q000494:pharmacology; D004357:Drug Synergism; D005260:Female; D006358:Hot Temperature; D006801:Humans; D006979:Hyperthermia, Induced; D008297:Male; D008875:Middle Aged; D016685:Mitomycin / Q000494:pharmacology; D013274:Stomach Neoplasms / Q000188:drug therapy / Q000473:pathology; D046509:Tissue Culture Techniques; D014407:Tumor Cells, Cultured
chemical_list: D000970:Antineoplastic Agents; D016685:Mitomycin; D004317:Doxorubicin; C027260:pirarubicin; D002945:Cisplatin