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Curative resection of orthotopically implanted pancreatic cancer in Syrian golden hamsters

, : Curative resection of orthotopically implanted pancreatic cancer in Syrian golden hamsters. International Journal of Pancreatology 28(3): 207-213

Homologous orthotopic implantation models of pancreatic ductal cancer in Syrian golden hamsters can mimic the clinical features of the disease in humans. However, there have been no studies attempting a surgical approach to this animal model. Our aim was to clarify the possibility of curative resection in these tumor-bearing animals. A nitrosamine-induced pancreatic ductal adenocarcinoma cell line, HaP-T1, was used for the experiments. Hamsters underwent two surgeries: first, the cells or the tissue previously grown subcutaneously were implanted into the pancreas, and second, pancreatectomy and splenectomy were performed within the following 4 wk after implantation. Animals were examined until death, when necropsies were performed. Surgically resected and necropsied specimens were studied histopathologically and at the molecular level by detection of K-ras point mutation at codon 12. At the second surgery, the success of implantation was 100%, and the curative resection rate was 75%. After observation for 400 d, 5 of 12 hamsters, which underwent second surgery within 15 d, were still alive. They were sacrificed and were found to be tumor-free. Orthotopic homologous implantation model of hamster pancreatic cancer combined with surgical resection may be useful for further research of adjuvant or neoadjuvant therapy for pancreatic carcinoma.


PMID: 11373058

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