Publications by authors named "Kazuo Yamamura"

Breast cancer is one of the most common and feared cancers faced by women. The prognosis of patients with advanced or recurrent breast cancer remains poor despite refinements in multimodality therapies involving chemotherapeutic and hormonal agents. Multimodal therapy with more specific and effective strategy is urgently needed.

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Background: Various inflammation-based prognostic scores, including the Glasgow prognostic score (GPS), neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), prognostic index (PI), and prognostic nutritional index (PNI), have been associated with survival in patients with several types of cancer. This study compared the ability of these scores to predict recurrence-free survival (RFS) in patients with hepatocellular carcinoma (HCC) after curative hepatectomy.

Methods: Data were collected prospectively from 113 patients who underwent curative resection for HCC from January 2003 to December 2012.

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Oncolytic virus therapy is a promising new therapeutic method, one of an eagerly anticipated class of biological therapies against cancer. There are many different classes of oncolytic virus. One of these, herpes oncolytic virus, is strongly oncolytic and has a large DNA genome as 150k bp.

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Background: The clinical significance of preservation of the pyloric ring in total pancreatectomy (TP) has not been elucidated.

Methods: A total of 48 consecutive patients underwent TP and were categorized into two groups based on the absence or presence of pylorus resection: the TP (N = 33) and pylorus-preserving TP (PPTP) (N = 15) groups. Preoperative patient background, intraoperative conditions, postoperative complications, and long-term nutritional status were retrospectively compared between the two groups.

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Background: There is the potential to use replication-competent oncolytic viruses to treat cancer. We evaluated the efficacy of HF10, a herpes simplex virus type 1 (HSV-1) mutant, in combination with erlotinib, an epidermal growth factor receptor tyrosine kinase inhibitor, in human pancreatic cancer xenograft models.

Methods: The viability of human pancreatic cancer cell lines (BxPC-3 and PANC-1) treated with HF10 and erlotinib, on their own or in combination, was determined.

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Objective: The aims of this study were to clarify the type of intrapancreatic spread of cancer of the pancreatic body and tail and to assess whether a 2-cm transection margin is adequate to ensure negative margins.

Methods: We selected 66 patients who underwent distal pancreatectomy for cancer of the pancreatic body and tail. We investigated intrapancreatic cancer spread in these patients histopathologically and analyzed the relationship between 2-cm-margin positivity and other clinicopathological characteristics.

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Background/aims: Advanced gastric cancer is difficult to treat due to the frequency of liver metastases and peritoneal dissemination. A combination of two new strategies, including the anti-angiogenesis inhibitor bevacizumab and an oncolytic herpes virus is a promising treatment for advanced cancer.

Methodology: The effects of bevacizumab on oncolytic herpes virus replication and viral cytotoxicity were examined at varying bevacizumab concentrations and viral titers.

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We report a case of primary malignant melanoma (MM) of the stomach. The patient, a 73-year-old man, was referred to our hospital for investigation of an elevated lesion in the stomach, detected by gastroscopy. On admission, physical examinations and laboratory data were unremarkable.

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Background: After pancreatoduodenectomy in patients with celiac axis stenosis or obstruction, it becomes problematic to maintain the upper abdominal organ blood flow, especially to the liver. The aim of this study was to investigate the celiac axis stenosis caused by median arcuate ligament (MAL) compression and to classify it according to preoperative image findings.

Methods: From January 1989 to November 2010, 562 patients underwent operations for diseases of the pancreatic head region in our department.

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Unlabelled: BACK GROUND/AIMS: Oncolytic virus therapy is becoming a promising anti-cancer therapy and oncolytic viruses have been shown to elicit anti-cancer immunity. We evaluated the anti-tumor immune responses elicited by the herpes oncolytic virus R3616 compared to a representative chemotherapy drug, 5-FU.

Methodology: R3616 or 5-FU was directly injected into subcutaneous tumors of non-immunized mice.

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Objective: The current classification of pancreatic cancer is based only on anatomic location of metastatic lymph nodes (LNs). On the other hand, the number of metastatic LNs has been used in staging of colorectal, esophageal, and gastric cancers. The aim of this study was to assess the prognostic impact of the number or ratio of the metastatic LNs in pancreatic body and tail carcinoma.

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Purpose: The aim of this study was to retrospectively assess if arterial hypertension induced during treatment with bevacizumab was associated with the clinical outcome in advanced, recurrent colorectal cancer patients treated with first-line bevacizumab.

Subjects: 13 patients( 7 men and 6 women) with advanced, recurrent colorectal cancer were treated by mFOLFOX6 regimen with first-line bevacizumab from August 2008 to July 2009. The median age was 64.

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This is a phase I study to determine the maximum tolerated dose (MTD) and toxicity of a combination of TS-1 and weekly cisplatin (CDDP) in advanced gastric cancer patients. TS-1 was administered orally twice daily after meals, at a standard dose of 80 mg/m2. One course consisted of 21 days' consecutive administration followed by 14 days' rest.

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We report a case of a patient with recurrent gastric cancer and lung metastasis, who responded remarkably to combination chemotherapy using TS-1 and weekly CDDP. The patient was administered 2 courses of TS-1 (80 mg/m2/day, on day 1-21) and CDDP (25 mg/m2/day, on day 8, 15, 22) every 5 weeks. The regimen was done on an outpatient basis.

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