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Mutsu, Japan

Kurihara T.,Tokyo Medical University | Yasuda I.,Gifu University | Isayama H.,University of Tokyo | Tsuyuguchi T.,Chiba University | And 17 more authors.
World Journal of Gastroenterology | Year: 2016

AIM: To assess the utility and safety of single-operator cholangiopancreatoscopy (SOCPS) using the SpyGlass system in widespread clinical application for biliary and pancreatic diseases. METHODS: This study was a prospective case series conducted in 20 referral centers in Japan. There were 148 patients who underwent SOCPS; 124 for biliary diseases and 24 for pancreatic diseases. The attempted interventions were SOCPS examination, SOCPS-directed tissue sampling, and therapy for stone removal, among others. The main outcomes were related to the procedure success rate in terms of visualizing the target lesions, SOCPS-directed adequate tissue sampling, and complete stone removal. RESULTS: A total of 148 patients were enrolled for the diagnosis of indeterminate biliary and pancreatic lesions or treatment of biliary and pancreatic disease. The overall procedure success rate of visualizing the target lesions was 91.2% (135/148). The overall procedural success rates of visualizing the target lesions of diagnostic SOCPS in the bile duct and pancreatic duct were 95.5% (84/89) and 88.2% (15/17), respectively. Diagnosis: the overall adequate tissue for histologic examination was secured in 81.4% of the 86 patients who underwent biopsy under SOCPS (bile duct, 60/75, 80.0%; pancreatic duct, 10/11, 90.9%). The accuracy of histologic diagnosis using SOCPS-directed biopsies in indeterminate bile duct lesions was 70.7% (53/75). In the pancreatic duct, the accuracy of SOCPS visual impression of intraductal papillary mucinous neoplasm was 87.5% (14/16). Stone therapy: complete biliary and pancreatic stone clearance combined with SOCPS-directed stone therapy using electrohydraulic lithotripsy or laser lithotripsy was achieved in 74.2% (23/31) and 42.9% (3/7) of the patients, respectively. Others: SOCPS using the SpyGlass system was used in cannulation of the cystic duct in two patients and for passing across the obstructed self-expandable metallic stent for a malignant biliary stricture in two patients. All procedures were successful in both SOCPS-guided therapies. The incidence of procedure-related adverse events was 5.4% (8/148). CONCLUSION: SOCPS with direct visualization and biopsy for diagnosis and SOCPS-directed therapy for biliary and pancreatic diseases can be safely performed with a high success rate. © 2016 Baishideng Publishing Group Inc. All rights reserved.

Mori T.,Tokyo Metropolitan Cancer and Infectious Disease Center | Ohue M.,Japan National Cardiovascular Center Research Institute | Takii Y.,Niigata Cancer Center Hospital | Hashizume T.,Mutsu General Hospital | And 4 more authors.
Oncology Reports | Year: 2013

We evaluated the predictive relevance of several biomarkers on the survival of patients with stage III colorectal cancer treated with adjuvant chemotherapy of oral fluoropyrimidines. This was a multicenter phase II trial on adult patients with histologically confirmed resected stage III (Dukes' C) colorectal cancer. Patients received oral doxifluridine (800 mg/m2/day) in 3 divided doses, or oral uracil/tegafur (UFT) (400 mg/m2/day) in 2 divided doses for 5 days, every 7 days for 12 months with a 5-year follow-up. Outcome measures were disease-free survival and tissue markers [thymidine phosphorylase (TP), dihydropyrimidine dehydrogenase (DPD) protein levels and T P, DPD, thymidylate synthase (TS) and orotate phosphoribosyltransferase (OPRT) mRNA levels in tumor samples and TS tandem-repeat type in blood samples]. There was a significant association between the intratumoral TP/DPD enzyme ratio and disease-free survival when the model included the drug, the parameter and the interactions between them [hazard ratio (HR)=2.76; P = 0. 00469]. The 5-year disease-free survival rate was statisti-cally significantly higher in patients with high TP/DPD ratios [median ≥2.63: 71.9%; 95% confidence interval (CI) 61.4-80.0] compared to patients with low TP/DPD ratios (<2.63: 57.0%; 95% CI 46.3-66.3) (log-rank P=0.0277) following adjuvant therapy with oral fluoropyrimidines. No significant association was observed between the intratumoral TP/DPD enzyme ratio (cut-off value 2.0) and the disease-free survival rate in the doxifluridine group; primary endpoint (log-rank P=0.6850). The magnitude of the intratumoral TP/DPD enzyme ratio may be a potential indicator for the individualization of postoperative adjuvant chemotherapy with oral fluoropyrimidines for stage III colorectal cancer.

Nakano S.,Tokyo Metropolitan Institute of Medical Science | Nakano S.,Synthera Technologies Co. | Tsukimura T.,Meiji Pharmaceutical University | Togawa T.,Meiji Pharmaceutical University | And 10 more authors.
PLoS ONE | Year: 2015

We developed an immunochromatography-based assay for detecting antibodies against recombinant α-galactosidase A proteins in serum. The evaluation of 29 serum samples from Fabry patients, who had received enzyme replacement therapy with agalsidase alpha and/ or agalsidase beta, was performed by means of this assay method, and the results clearly revealed that the patients exhibited the same level of antibodies against both agalsidase alpha and agalsidase beta, regardless of the species of recombinant α-galactosidase A used for enzyme replacement therapy. A conventional enzyme-linked immunosorbent assay supported the results. Considering these, enzyme replacement therapy with agalsidase alpha or agalsidase beta would generate antibodies against the common epitopes in both agalsidase alpha and agalsidase beta. Most of the patients who showed immunopositive reaction exhibited classic Fabry phenotype and harbored gene mutations affecting biosynthesis of α-galactosidase A. As immunochromatography is a handy and simple assay system which can be available at bedside, this assay method would be extremely useful for quick evaluation or first screening of serum antibodies against agalsidase alpha or agalsidase beta in Fabry disease with enzyme replacement therapy. Copyright: © 2015 Nakano et al.

Yokoyama Y.,Hirosaki University | Futagami M.,Hirosaki University | Watanabe J.,Hirosaki University | Sakuraba A.,Aomori General Health Examination Center | And 3 more authors.
Human Cell | Year: 2016

We incorporated liquid-based cytology (LBC) in population-based screening for cervical cancer. The usefulness of using LBC in mass screening for cervical cancer was examined. From 2009 to 2014, 157,061 individuals underwent mass screening for cervical cancer in Aomori Prefecture. From 2009 to 2011, cells were collected from 82,218 individuals and the specimens were conventionally prepared (CP). From 2012 to 2014, cells were collected from 74,843 individuals and the specimens were prepared using LBC (TACAS™). Cytology results for the 2 sets of specimens were compared and differences in cytologic features were examined. ASC-US and more severe lesions were detected at a rate of 1.13 % by CP and 1.44 % by LBC, so LBC had a 1.3-fold higher rate of detection. LBC had a 1.6-fold higher rate of LSIL detection and a 1.2-fold higher rate of HSIL detection. CP detected cancer in 20 cases at a rate of 0.024 % while LBC detected cancer in 18 cases at a rate of 0.024 %. Cytodiagnosis of the 18 cases of SCC that LBC identified revealed that 7 were SCC, 8 were HSIL, and 3 were ASC-H. Atypical cells tended to be smaller with TACAS™. LBC reduced the time needed for microscopic examination of a single specimen by 42 % in comparison to CP. LBC using TACAS™ allowed the detection of slight lesions and slight changes in cells. LBC can lessen the burden on medical personnel and may lead to improved accuracy. © 2016 Japan Human Cell Society and Springer Japan

Kamimura N.,Hirosaki University | Hatakeyama S.,Hirosaki University | Kudo S.,Hirosaki University | Yoneyama T.,Hirosaki University | And 6 more authors.
Acta Urologica Japonica | Year: 2011

The efficacy and safety of additional administration of propiverine were prospectively studied for naftopidil-rcsistant nocturia in patients with benign prostatic hypertrophy (BPH). Patients of 50 years and over with BPH who experienced nocturia twice a night or more and an overall International Prostate Symptom Score (IPSS) of 8 or more were first administered naftopidil (50 or 75 mg/day) for 4 weeks. Thirty subjects who did not show improvement in nocturia and requested further treatment were enrolled in the present study. Propiverine was then administered concomitantly 10 mg/day for 8 weeks. Significant improvement was observed with additional propiverine in the frequency of nocturia on voiding diary, total IPSS, voiding symptom, storage symptom and nocturnal voiding scores. No significant change was observed in the peak urinary flow rate (Qmax), mean urinary flow rate (Qave), voided urine volume, or residual urine volume. Adverse events were dysuria (2 cases), increased residual urine (6 cases), weak urine flow (1 case), thirsty (2 cases), angular cheilitis (1 case). Administration of propiverine was suspended in 7 subjects, 1 following dysuria and 6 following increased residual urine volume. The suspension of propiverine following increased residual urine volume was significantly more prevalent in subjects with pretreatment Qmax values of less than 10 ml/second or in subjects whose prostate specific antigen (PSA) levels were 2 ng/ml or more. In conclusion, the results indicate that additional administration of propiverine may be useful for the patients with BPH who have naftopidil-resistant nocturia. However, caution must be exercised regarding Qmax and PSA levels.

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