Isaku Yoshioka

University of Toyama, Тояма, Toyama, Japan

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Publications (22)

  • Article · Sep 2016
  • Article · Aug 2016 · Pancreatology
  • [Show abstract] [Hide abstract] ABSTRACT: A 56-year-old woman presented with exertional shortness of breath. CT showed a remarkably swollen spleen and peripheral blood revealed atypical lymphocytes. Bone marrow smear and flow cytometry suggested hairy cell leukemia Japanese variant (HCLjv). Three weeks after admission, splenomegaly increased from 2,125 cm3 to 3,207 cm3. Because pancytopenia and abdominal retention had progressed, splenectomy was performed to improve symptoms and obtain a definitive diagnosis. To prevent bleeding and reduce splenic volume, embolization of the splenic artery with balloon catheter was performed preoperatively. Thus splenectomy was performed safely. The operation took 146 minutes and blood loss was 30 ml. Reduced splenic volume with embolization was 2,657 g. Splenectomy was effective in diagnosing this splenomegaly with HCLjv, and it led to the improvement of abdominal retention.
    Article · Jan 2016 · Nippon Shokaki Geka Gakkai zasshi
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    Full-text available · Article · Jan 2016 · Journal of Cancer Therapy
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    Makoto Moriyama · Takuya Nagata · Isaku Yoshioka · [...] · Kazuhiro Tsukada
    [Show abstract] [Hide abstract] ABSTRACT: Paroxysmal nocturnal hemoglobinuria (PNH) is acquired hemolytic anemia characterized by symptoms such as anemia and hemoglobinuria. In recent years, eculizumab as an anti-complement (C5) monoclonal antibody has been used for PNH and shown to have marked effects. We performed laparoscopic cholecystectomy in a patient with PNH being treated with eculizumab, and could avoid the risk of perioperative hemolysis and thrombosis. [Patient] The patient was a 48-year-old female who had developed PNH when she was 39 years old. At the age of 46 years, eculizumab administration was initiated once every 2 weeks. During the administration period, neither the progression of anemia nor hemoglobinuria was observed. In March 2013, gallstones were detected, and she was referred to our hospital for surgery. Eculizumab was administered 10 days before surgery, and laparoscopic cholecystectomy was performed in May 2013. After the operation, for the prevention of thrombosis, elastic stockings and a foot pump were used without anticoagulant administration. After the operation, neither the progression of anemia nor hemoglobinuria was observed. On postoperative day 5, eculizumab was administered as planned, and she showed a favorable general condition and was discharged. [Discussion] Perioperative care in PNH patients was conventionally considered to involve a high risk of developing anemia, thrombosis, or infection. However, after the advent of eculizumab, the control of the symptoms of PNH became possible in many patients. In this patient with PNH being treated with eculizumab, safe perioperative management was possible without the development of complications.
    Full-text available · Article · Sep 2015
  • [Show abstract] [Hide abstract] ABSTRACT: We report a case of autoimmune pancreatitis for which a pancreaticoduodenectomy was performed, while preserving the gastroduodenal artery, following a prior subtotal esophagectomy and reconstruction via a gastric tube. A 70-year-old man, who had undergone subtotal esophagectomy and reconstruction via a gastric tube for esophageal cancer 35 months previously, was admitted to our hospital for jaundice. Upon admission, abdominal CT showed a 23-mm pancreatic tumor in the pancreatic head with obstructive jaundice. The serum IgG4 concentration was low, and the levels of the tumor markers Elastase 1, DUPAN 2, and CA19-9 were high. We diagnosed pancreatic cancer. Angiography showed no invasion of the right gastroepiploic artery via the gastroduodenal artery. We performed a pancreaticoduodenectomy, preserving the gastroduodenal artery. Pathological examination revealed typical autoimmune pancreatitis with no malignant cells. In cases of low serum IgG4 concentration, it is difficult to diagnose AIP without the findings of the main pancreatic duct.
    Article · Jan 2015 · Nippon Shokaki Geka Gakkai zasshi
  • [Show abstract] [Hide abstract] ABSTRACT: A 6 1-year-old man who was admitted to our hospital because of obstructive jaundice. He was diagnosed with locally advanced cancer of the pancreatic head on computed tomography. Gemcitabine(1,000mg/m2 on days 8 and 15, every 21 days)+S-1(6 0mg/m2 on day 1-15, every 21 days)chemotherapy was administered because the tumor had invaded the common hepatic artery and portal vein. The tumor was reduced following 9 months of chemotherapy. Thus, subtotal stomach- preserving pancreaticoduodenectomy(SSPPD)was performed. The histopathological findings indicated no invasion of the cancer into the surrounding tissues. No recurrence has occurred 7 months after surgery. Neoadjuvant chemotherapy is important for effective treatment of locally advanced pancreatic cancer.
    Article · Nov 2014 · Gan to kagaku ryoho. Cancer & chemotherapy
  • [Show abstract] [Hide abstract] ABSTRACT: Background/purpose: Aquaporins (AQPs) are important in controlling bile formation. However, the exact role in human gallbladder carcinogenesis has not yet been defined. Methods: AQP-5-expressing gallbladder carcinoma (GBC) cell lines (NOZ) were transfected with anti-AQP-5 small interfering RNA (siRNA). Growth, migration, invasion assay, and drug susceptibility tests were performed. Next, microRNA (miRNA) expression was analyzed by miRNA oligo chip (3D-Gene®). AQP-5 and AQP-5-related miRNA target gene expressions were also analyzed using tissue microarray (TMA) in 44 GBC samples. Results: Treatment with AQP-5 siRNA decreased cell proliferation, migration, and invasion. On the other hand, those cells increased IC50 of gemcitabine. By performing miRNA assays, miR-29b, -200a, and -21 were shown to be highly overexpressed in cells treated with AQP-5 siRNA NOZ. When focusing on miR-21, phosphatase and tensin homolog (PTEN) was found to be a target of miR-21. In the TMA, AQP-5/PTEN coexpression was significantly associated with the depth of invasion and MIB-1 index (p = 0.003, 0.010). Survival of patients with a high AQP-5/PTEN coexpression was longer than that of patients with a low coexpression (p = 0.003). Conclusions: Our result suggested that miR-21 and PTEN may contribute to the role of AQP-5 in GBC. AQP-5 and PTEN cascades are favorable biomarkers of GBC.
    Article · Nov 2013 · European Surgical Research
  • [Show abstract] [Hide abstract] ABSTRACT: Abstract Although several reports have revealed that fluorine-18 fluorodeoxyglucose positron emission tomography ((18)F-FDG PET) is useful for differentiating between benign and malignant lesions in the gallbladder, the positive results of (18)F-FDG PET are not specific for malignancy because (18)F-FDG is also accumulated in inflammatory lesions. It is known that the most important pathway for (18)F-FDG to enter the cell body is mediated by the facilitative glucose transporter-1 (GLUT-1) through GLUT-3. We herein present a case of xanthogranulomatous cholecystitis (XGC) with a positive result on (18)F-FDG PET. In this case, GLUT-1 and GLUT-3 were both positively expressed in inflammatory cells at the gallbladder wall of XGC and this is the first report to reveal GLUT expression in XGC. This report reveals that surgeons should carefully consider the appropriate treatment of gallbladder tumor, even with a positive result on (18)F-FDG PET.
    Article · Oct 2013 · International surgery
  • [Show abstract] [Hide abstract] ABSTRACT: Primary malignant melanoma of the esophagus (PMME) is a rare disease. Here, we describe a case of PMME that was identified at a very early stage. A 65-year-old man underwent upper gastrointestinal endoscopy and was found to have a pigmented small nodule in the lower esophagus. A biopsy was taken and diagnosed as malignant melanoma, so the patient then received radical esophagectomy. Histopathological examination showed atypical cell infiltrate in the lamina propria mucosae without lymph-node metastasis. The patient was followed up without adjuvant chemotherapy. Multiple liver and lung metastases were found at 19 months after surgery, and the patient received DAV-feron (DTIC/ACNU/VCR/IFN-β) therapy. However, the tumors progressed and the patient died of the disease at 27 months after surgery. More detailed surveys after surgery with diagnostic imaging and tumor markers are recommended. Adjuvant chemotherapy is worth considering, even in patients with early-stage PMME.
    Article · Sep 2013 · Esophagus
  • Article · Aug 2013 · Cancer Research
  • [Show abstract] [Hide abstract] ABSTRACT: The clinical outcome of gastrointestinal stromal tumor (GIST) has been improved by the introduction of molecular-targeting drugs. However, resistance to these drugs appears during the course of treatment. The aim of this study was to establish and characterize a human xenograft model of GIST. GIST tissue from a patient with esophageal GIST was implanted under the skin of a NOD-SCID mouse. The tumor became successfully engrafted and we investigated the effects of imatinib and sunitinib on this model. KIT mutation was investigated by complementary DNA analysis, and c-KIT (CD117) expression was evaluated by immunohistological staining. cDNA analysis of the tumor revealed a KIT mutation in exon 11. c-KIT expression was observed in each passaged tumor. Both imatinib and sunitinib significantly reduced the size of the xenograft tumor. We established a novel xenograft model of human GIST in mice. This xenograft model may be useful for studying GIST.
    Article · Jan 2013 · Anticancer research
  • [Show abstract] [Hide abstract] ABSTRACT: Aim: To understand the role of iPS inductive genes in esophageal cancer, we examined the expression of Sex determining region Y-box 2 (SOX2), Octamer-binding transcription factor 3/4 (OCT3/4), Krueppel-like factor 4 (KLF4), c-Myelocytomatosis viral oncogene (c-MYC) and Tir Na Nog (NANOG) using an esophageal squamous cell carcinoma tissue micrroarray. The immunohistochemical expression levels of the five genes were compared to the clinicopathological data of the 81 patients with esophageal cancer. There was no relationship between the expression of the five genes and TNM factors of the patients. High expression of NANOG was an independent favorable prognostic factor (p=0.041). Among the patients who received postoperative cisplatin-based chemotherapy, patients with NANOG-positive tumor had significantly better prognosis than those whose tumors were NANOG negative (p=0.024). On the other hand, those with c-MYC-positive expression tended to have a worse prognosis and were resistant to cisplatin-based chemotherapy. NANOG expression was found to be an independent prognostic factor for patient with esophageal cancer. Patients with NANOG-positive expression tumor may be good candidates for cisplatin-based treatment.
    Article · Dec 2012 · Anticancer research
  • H. Uotani · I. Yoshioka · M. Moriyama · [...] · M. Tanaka
    [Show abstract] [Hide abstract] ABSTRACT: A 61-year-old man underwent partial resection of the tongue for cancer in January 2009; TS-1 was administered for a year as adjuvant chemotherapy. One year after the surgery, FDG-PET/CT, performed to check non-reccurrence of tongue carcinoma, unexpectedly disclosed markedly increased FDG uptake in the tail of the pancreas. Abdominal CT scan showed swelling of the tail of the pancreas, where segmental narrowing of the main pancreatic duct was visualized by ERCP. Serum IgG4 levels were elevated. Although autoimmune pancreatitis was suspected, histological confirmation was needed, to exclude the possibility of pancreatic cancer or recurrence of tongue cancer. Needle biopsy of the pancreas was performed under laparoscopy and the lesion in the tail of the pancreas was histologically confirmed to be autoimmune pancreatitis. Laparoscopically, the lesion was markedly atrophic and ash-colored in appearance, distinct from the normal part of the pancreas. Bleeding from the puncture site was easily controlled by applying pressure. Laparoscopy is useful to directly visualize the lesion, and needle biopsy is an easy and safe procedure.
    Article · Nov 2012 · Endoscopic Forum for Digestive Disease
  • [Show abstract] [Hide abstract] ABSTRACT: Prognosis for patients with gallbladder carcinoma (GBC) is poor and the standard treatment for GBC has not yet been established. We established the human GBC cell line TYGBK-1, from a patient with papillary, tubular adenocarcinoma. The doubling time was 48 hours. This cell line has a missense mutation of p53 and no mutation of the K-RAS gene. This cell line was transplantable to nude mice. We characterized the sensitivity of TYGBK-1 to gemcitabine. We also examined the association of two gemcitabine-related genes (deoxycytidine kinase, dCK, and Hu antigen R, HuR). Among four GBC cell lines (TYGBK-1, NOZ, G-415, TGBC2TKB), TYGBK-1 and NOZ exhibited sensitivity to gemcitabine. Furthermore, these cells expressed both dCK and HuR mRNA, rather than gemcitabine-resistant cells. The newly established GBC cell line TYGBK-1, may represent an effective tool for development of chemotherapeutic treatment for GBC.
    Article · Aug 2012 · Anticancer research
  • [Show abstract] [Hide abstract] ABSTRACT: Aquaporins (AQPs) are important in controlling bile formation, however, the exact role of AQPs in human biliary tract carcinogenesis has not been clearly defined. In this study, we analyzed AQP-1, -4, -5 and -8 expression immunohistochemically using tissue microarrays (TMAs) in 81 samples. (45 gallbladder carcinomas and 36 bile duct carcinomas). The survival of patients with high AQP-5 expression was longer compared to that of patients with low AQP-5 expression (P=0.017). Cox's proportional hazard model revealed that AQP-5 expression was an independent prognostic factor (RR, 0.38; P=0.025). Chi-square analysis revealed that high AQP-5 expression correlated to small tumor size in biliary tract carcinoma patients (P=0.006). With regard to the expression of other AQPs, depth of tumor invasion, histological type and serum carbohydrate antigen 19-9 (CA19-9) were associated with high AQP-1 expression (P=0.039, 0.011 and 0.032). However, AQP-4 and AQP-8 expression had no association with clinicopathological factors. Among the 10 patients who underwent gemcitabine (GEM) plus S-1 postoperative chemotherapy, the group of patients (n=5) with high AQP-5 expression were associated with higher rates of both overall and disease-free survival (log-rank P=0.033, 0.002). In conclusion, the results of this study suggest that AQP-5 expression may be associated with prognosis and drug sensitivity in biliary tract carcinoma.
    Article · Jun 2012 · Oncology Reports
  • [Show abstract] [Hide abstract] ABSTRACT: Recently, prone position esophagectomy for esophageal cancer is thought to be an easier and safer procedure. Here, we introduced prone position for enucleation of the fluorine-18-fluorodeoxyglucose positron emission tomography (FDG-PET) positive esophageal leiomyoma. The patient was a 47-year-old man with a 4 cm mid-thoracic esophageal submucosal tumor. The tumor was enucleated safely without injury of the esophageal mucosa under the gravity effect of the prone position with use of a sponge spacer and Sengstaken-Blakemore balloon. Postoperative examination revealed that the tumor was a leiomyoma that was positive for smooth muscle actin and negative for CD117. Postoperative course was uneventful and the patient was discharged on day 7 after the operation. The prone position with use of a sponge spacer and Sengstaken-Blakemore balloon was a safer and easier procedure for the enucleation of the esophageal submucosal tumor.
    Article · May 2012 · General Thoracic and Cardiovascular Surgery
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    [Show abstract] [Hide abstract] ABSTRACT: Background Adequate blood supply for the reconstructed organ is important for safe esophagogastric anastomosis during esophagectomy. Recently, indocyanine green (ICG) has been used for visualization of the blood supply when anastomosis is performed in vascular surgery. To visualize the blood supply for reconstruction, we employed ICG fluorescence during esophagectomy. Methods From August 2008, 40 patients received cervical or thoracic esophagectomy. They consisted of 33 patients having esophagectomy for thoracic esophageal cancer, 3 being treated for cervical esophageal cancer, and 4 with double cancer of the thoracic and cervical regions. Before and after pulling up the reconstructed organ, 2.5 mg of ICG was injected as a bolus. Then ICG fluorescence was detected by a camera and recorded. Results ICG fluorescence was easily detected in all patients at 1 min after injection. The vascular network was well visualized in the gastric wall, colonic grafts, and free jejunal grafts. In five patients, we also performed anastomosis between the short gastric vein and the external cervical vein or superficial cervical vein. The intraoperative and postoperative course of all patients was uneventful apart from three anastomotic leakages. Conclusions ICG fluorescence can be employed to evaluate the blood supply to reconstructed organs and can be useful in selecting the patients who do not need additional vessel anastomosis. However, anastomotic leakage was not reduced, so the microcirculation detected by ICG fluorescence did not necessarily provide appropriate blood supply for a viable anastomosis.
    Full-text available · Article · Dec 2011 · Esophagus
  • Shigeaki Sawada · Isaku Yoshioka · Yoshito Kuroki · [...] · Kazuhiro Tsukada
    Article · Jan 2011 · Suizo
  • Isaku Yoshioka · Koushi Matsui · Tomoyuki Okumura · [...] · Kazuhiro Tsukada
    Article · Jul 2010 · The American surgeon