Time filter

Source Type

Kashihara, Japan

Miura K.,Osaka City University | Kimura K.,Osaka City University | Amano R.,Osaka City University | Yamazoe S.,Osaka City University | And 8 more authors.
BMC Cancer | Year: 2016

Background: Anaplastic pancreatic cancer (APC) cell lines have been scarcely established. Methods: The morphology, gene expressions, karyotyping and epithelial-mesenchymal transition markers of newly established APC cell lines OCUP-A1 and OCUP-A2 were analyzed. Their abilities of proliferation under normoxia and hypoxia, migration and invasion were compared to 4 commercially available pancreatic ductal adenocarcinoma (PDA) cell lines. Their induction of angiogenesis, stem-like cell population and subcutaneous tumor growth in nude mice were estimated, comparing 2 PDA cell lines examined here. Results: OCUP-A1 and OCUP-A2 cells continuously grew with spindle and polygonal shapes, respectively. Gene analysis revealed 9 gene mutations including KRAS and TP53. Karyotyping clarified numerical structural abnormalities in both cells. Loss of E-cadherin and expression of vimentin in both cell lines were observed. The doubling time of both cell lines was approximately 20 h. Proliferation, migration and invasion abilities were not notable compared to other PDA cell lines. However stem-like cell population of both cell lines was superior to a part of PDA cell lines. Moreover OCUP-A1 showed stronger hypoxia tolerance and induction of angiogenesis than other PDA cell lines. The tumorigenicity in vivo of OCUP-A2 was stronger than conventional PDA cell lines. Conclusions: The OCUP-A1 and OCUP-A2 cell lines of rare malignancies might be useful for investigating the biology of pancreatic cancer. © 2016 Miura et al. Source

Nakata B.,Kashiwara Municipal Hospital | Tendo M.,Kashiwara Municipal Hospital | Kuroda K.,Kashiwara Municipal Hospital | Hori T.,Kashiwara Municipal Hospital | And 3 more authors.
BMC surgery | Year: 2015

BACKGROUND: Patient with α-Fetoprotein (AFP)-producing gastric cancer usually has a short survival time due to frequent hepatic and lymph node metastases. Gastric cancer with portal vein tumor thrombus (PVTT) is rare and has an extremely poor prognosis.CASE PRESENTATION: A 63-year-old man was found to have a huge Type 3 gastric cancer with a PVTT and a highly elevated serum AFP level. Chemotherapy with S-1 plus cisplatin was given to this patient with unresectable gastric cancer for 4 months. The serum AFP level decreased from 6,160 ng/mL to 60.7 ng/mL with chemotherapy. Since the PVTT disappeared after the chemotherapy, the patient underwent total gastrectomy. Histological findings of the primary tumor after chemotherapy showed poorly differentiated adenocarcinoma without hepatoid cells and viable tumor cells remaining in less than 1/3 of the neoplastic area of mucosa and one lymph node. The cancerous cells were immunohistochemically stained by anti-AFP antibody. The patient has survived for 48 month without recurrence.CONCLUSIONS: AFP-producing gastric cancer with a PVTT has an extremely poor prognosis, but long-term survival was achieved for this dismal condition by salvage surgery after chemotherapy. Source

Nakata B.,Kashiwara Municipal Hospital | Ishikawa T.,Kashiwara Municipal Hospital | Amano R.,Osaka City University | Kimura K.,Osaka City University | Hirakawa K.,Osaka City University
International Journal of Surgery | Year: 2013

Purpose: The goal of this study was to review published literature regarding the impact of preoperative diabetes mellitus (DM) in patients undergoing pancreatectomy. Methods: Ovid Medline® of a biomedical database was used on subjective literature research. Results: The prevalence of preoperative DM was 30.9-54.9% in patients with pancreatic cancer and was 5.3-10.8% in patients with chronic pancreatitis. There were few reports that described the relationship between preoperative DM status and postoperative morbidity/mortality, or long-term survival after pancreatectomy. The incidence of pancreatic fistula of Grade B and C [defined by International Study Group on Pancreatic Fistula Definition (ISGPF)] was similar when comparing patients with and without preoperative DM. Furthermore, the incidence of death and various morbidities (e.g., infections, cardiovascular complications, clinically significant level of acute renal failure after pancreatectomy, and delayed gastric emptying after pancreaticoduodenectomy) were not significantly different when comparing patients with and without preoperative DM. It is unclear whether preoperative DM has an impact on long-term survival after pancreatectomy, and the difficulty in assessing this parameter may be due to different definitions of DM, different surgical methods, and different comorbidities when comparing different studies. Conclusions: The occurrence rates of postoperative mortality and morbidities including pancreatic fistula and renal failure of moderate to severe degrees were almost same between patients with and without preoperative DM. The influence of preoperative DM on long term survival after pancreatectomy should be elucidated by future studies under accurate and consistent definitions of DM. © 2013 Surgical Associates Ltd. Source

Nakao S.,Kashiwara Municipal Hospital
Gan to kagaku ryoho. Cancer & chemotherapy | Year: 2013

We report a case of a 60-year-old woman with abdominal distension who was treated with self-expandable metal stent (SEMS) placement in the proximal transverse colon. She was found to have severe bowel obstruction due to advanced transverse colon cancer on plain computed tomography (CT) and colonoscopy. We performed colonic stenting safely, and the symptom promptly improved. Defecation and flatus were observed on the same day of stenting, and the patient was able to start drinking and eating on the next day. Enhanced abdominal CT revealed multiple liver metastasis, peritoneal dissemination, ascites, and cystic ovarian tumor. After treatment with 1 course of 5-fluorouracil, Leucovorin, and oxaliplatin (mFOLFOX6), the patient was discharged on day 14 after admission. The rapidly enlarging ovarian tumors and primary colonic lesion with SEMS were surgically removed after treatment with mFOLFOX6 for 4 months in an outpatient basis. The patient has been alive with a good quality of life (QOL) and being treated with bevacizumab plus mFOLFOX6/Leucovorin, 5-fluorouracil, and irinotecan( FOLFIRI) for 6 months. SEMS placement could be safe and effective for the treatment of obstruction of the right colon, and could maintain a good QOL in patients. Source

Kajitani K.,Osaka City General Hospital | Honda K.-I.,Kashiwara Municipal Hospital | Honda K.-I.,Osaka City University | Terada H.,Kashiwara Municipal Hospital | And 4 more authors.
Asian Pacific Journal of Cancer Prevention | Year: 2016

The p53 gene is inactivated by the human papillomavirus (HPV) E6 protein in the majority of cervical cancers. Treatment of HeLa S3 cells with siRNA for HPV E6 permitted adenovirus-mediated transduction of a p53 gene linked to an upstream estrogen response element (ERE). Our previous study in non-siRNA treated HHUA cells, which are derived from an endometrial cancer and express estrogen receptor β, showed enhancing effects of an upstream ERE on adenovirus-mediated p53 gene transduction. In HeLa S3 cells treated with siRNA for HPV E6, adenovirus-mediated transduction was enhanced by an upstream ERE linked to a p53 gene carrying a proline variant at codon 72, but not for a p53 gene with arginine variant at codon 72. Expression levels of p53 mRNA and Coxsackie/adenovirus receptor (CAR) mRNA after adenovirus-mediated transfer of an ERE-linked p53 gene (proline variant at codon 72) were higher compared with those after non-ERE-linked p53 gene transfer in siRNA-treated HeLa S3 cells. Western blot analysis showed lower β-tubulin levels and comparatively higher p53/β-tubulin or CAR/β-tubulin ratios in siRNA-treated HeLa S3 cells after adenovirus-mediated ERE-linked p53 gene (proline variant at codon 72) transfer compared with those in non-siRNA-treated cells. Apoptosis, as measured by annexin V binding, was higher after adenovirus-mediated ERE-linked p53 gene (proline variant at codon 72) transfer compared with that after non-ERE-linked p53 gene transfer in siRNA-treated cells. Source

Discover hidden collaborations