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Jōetsu, Japan

Iwanami T.,Niigata Rosai Hospital
Kyobu geka. The Japanese journal of thoracic surgery | Year: 2010

To evaluate the optimum treatment strategy for metastatic adrenal tumors derived from non-small cell lung cancer (NSCLC), we retrospectively analyzed 17 consecutive cases (8 resection cases: 4 synchronous and 4 metachronous: 9 non-resection cases: 3 synchronous and 6 metachronous) who received surgical resection for NSCLC. The patients included 12 males and 5 females with a mean age of 63.9 years. Of these, 9, 3, 2, 2, and 1 patient (s) were diagnosed as having adenocarcinoma, squamous cell carcinoma, pleomorphic carcinoma, large cell carcinoma, and adenosquamous cell carcinoma, respectively. The mean interval after lung resection and treatment of metachronous adrenal metastasis was 9.9 months. The mean time to progression from treatment of metachronous adrenal metastasis to disease progression was 8.9 months. A survival analysis showed no significant prognostic difference between the patient age, gender, pathological stage, synchronous/metachronous classification, CEA, and site of metastases. However, patients who received an adrenalectomy had a more favorable prognosis. The 2-year survival of patients following resection versus those who did not undergo a resection for adrenal metastasis was 62.5 and 22.8%, respectively. These data indicate that metastatic adrenal tumors should be resected if the patient can tolerate surgery after appropriate selection. Source


Takagi S.,Ritsumeikan University | Omae R.,Ritsumeikan University | Makanga J.O.,Ritsumeikan University | Kawahara T.,Niigata Rosai Hospital | Inazu T.,Ritsumeikan University
Clinica Chimica Acta | Year: 2013

Background: Hypouricemia is a disorder that serum urate level is less than 2.0. mg/dl, and relatively common in the Japanese population, where the main genetic cause of hypouricemia is W258X and R90H mutations in human urate trasnsporter 1(SLC22A12). Small scale screening has relied on time-consuming traditional ways like polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Therefore, it is beneficial that we have an easy and rapid detection method for these mutations. Methods: In this report, we established a touchdown allele-specific real-time polymerase chain reaction (ASPCR) assay for detecting W258X and R90H mutations in SLC22A12, respectively. Results: Quantifiable discrimination was successfully achieved by {increment}Ct value. Furthermore, we conducted W258X and R90H screening against 120 control genome sets, whereby frequency was 2.92% for W258X, and not detected for R90H, respectively. Conclusions: The two mutations, W258X and R90H in SLC22A12 were successfully genotyped by an easy and rapid ASPCR assay. © 2012 Elsevier B.V. Source


Sato T.,Niigata Prefectural Shibata Hospital | Ito T.,Niigata University | Hirano T.,Niigata University | Morita O.,Niigata Prefectural Shibata Hospital | And 3 more authors.
European Spine Journal | Year: 2011

A cross-sectional study that targeted a total of 43,630 pupils in Niigata City, Japan was performed. The objective of the study was to evaluate the association between sports activities and low back pain (LBP) in childhood and adolescence in Japan. Regarding risk factors of LBP, a large number of studies have been conducted that have examined gender differences, height and weight, body mass index, sports time, differences in lifestyle, family history, and mental factors; however, no definitive conclusion has yet been made. A questionnaire survey was conducted using 43,630 pupils, including all elementary school pupils from the fourth to sixth grade (21,893 pupils) and all junior high pupils from the first to third year (21,737 pupils) in Niigata City (population of 785,067). 26,766 pupils who were determined to have valid responses (valid response rate 61.3%) were analyzed. Among the 26,766 pupils with valid responses, 2,591 (9.7%) had LBP at the time of the survey, and 8,588 (32.1%) had a history of LBP. The pupils were divided between those who did not participate in sports activities except the physical education in school (No sports group: 5,486, 20.5%) and those who participated in sports activities (Sports group: 21,280, 79.5%), and the difference in lifetime prevalence between No sports group and Sports group was examined. The odds ratio for LBP according to sports activity was calculated by multiple logistic regression analysis adjusted for gender, age, and body mass index. In addition, the severity of LBP was divided into three levels (Level 1: no limitation in any activity, Level 2: necessary to refrain from participating in sports and physical activities, and Level 3: necessary to be absent from school), and Levels 2 and 3 were defined as severe LBP; the severity was compared between No sports group and Sports group and in each sport's items. Moreover, in Sports group, the amount of time spent participating in sports activities were divided into three groups (Group 1: less than 6 h per week, Group 2: 6-12 h per week, and Group 3: 12.1 h per week or more), and the dose-response between the amount of time spent participating in sports activities and the occurrence of LBP were compared. In No sports group, 21.3% experienced a history of LBP; in Sports group, 34.9% experienced LBP (P < 0.001). In comparison to No sports group, the odds ratio was significantly higher for Sports group (1.57), and also significantly higher for most of the sports items. The severity of LBP was significantly higher in Sports group (20.1 vs. 3.2%, P < 0.001). The amount of time spent participating in sports activities averaged 9.8 h per week, and a history of LBP significantly increased in the group which spent a longer time participating in sports activities (odds ratio 1.43 in Group 3). These findings suggest that sports activity is possible risk factors for the occurrence of LBP, and it might increase the risk for LBP in childhood and adolescence. © 2010 Springer-Verlag. Source


Kawahara T.,Niigata Rosai Hospital | Nishikawa M.,Niigata Rosai Hospital | Kawahara C.,Japan National Institute of Public Health | Inazu T.,Association of Niigata Occupational Health | And 2 more authors.
Circulation | Year: 2013

Background: Statins are not effective in reducing atherosclerotic plaques of the abdominal aorta, and accumulating evidence suggests that bisphosphonates have the potential to induce the regression of atherosclerotic plaques of the abdominal aorta. Methods and Results: A prospective, randomized, open-label, blinded-end-point trial involving 108 participants with hypercholesterolemia was conducted. Participants received 20 mg atorvastatin daily, 400 mg etidronate daily, or both drugs daily. The primary end point was the percent change in maximal vessel wall thickness of atherosclerotic plaques in the thoracic and abdominal aortas as measured by magnetic resonance imaging after 12 months of treatment. In both the combination therapy and atorvastatin groups, maximal vessel wall thickness of the thoracic aorta was reduced by 13.8% (95% confidence interval,-16.4 to-11.3) and 12.3% (95% confidence interval,-14.9 to-9.7), respectively. These reduction rates were comparable between groups (P=0.61). Meanwhile, in the etidronate group, maximal vessel wall thickness of the thoracic aorta remained unchanged (2.2%; 95% confidence interval, -0.3 to 4.8). Conversely, maximal vessel wall thickness of the abdominal aorta was reduced more effectively in the combination therapy group (-11.4%) than in the atorvastatin group (-0.9%; P<0.001) and the etidronate group (5.5%; P=0.006). Conclusions: Atorvastatin plus etidronate combination therapy for 12 months significantly reduced both thoracic and abdominal aortic plaques, whereas atorvastatin monotherapy reduced only thoracic aortic plaques and etidronate monotherapy reduced only abdominal aortic plaques. The effectiveness of combination therapy in reducing atherosclerotic plaques in the abdominal aorta was significantly greater than for both atorvastatin and etidronate monotherapy. © 2013 American Heart Association, Inc. Source


Kawahara T.,Niigata Rosai Hospital | Nishikawa M.,Japan National Institute of Public Health | Furusawa T.,Niigata Rosai Hospital | Inazu T.,Ritsumeikan University | Suzuki G.,International University of Health and Welfare
Journal of Atherosclerosis and Thrombosis | Year: 2011

Aim: Although statins have been well documented to induce the regression of thoracic aortic plaques, a similar effect of statins on abdominal aortic plaques has not been observed. We aimed to explore whether a statin in combination with a bisphosphonate was effective in the regression of abdominal aortic plaques, which are more likely to be calcified. Methods: Eighty-seven patients with hypercholesterolemia were assigned to the atorvastatin (ATR) + etidronate (ETD) group (n = 45) or ATR group (n = 42). A total of 98 thoracic and 107 abdominal aortic plaques were detected in the ATR + ETD group, and 86 thoracic and 102 abdominal plaques in the ATR group at baseline, as measured by magnetic resonance imaging (MRI). The primary end-point was the change of maximal vessel wall thickness (Max-VWT) in atherosclerotic lesions after 1 year, as assessed by MRI. Results: ATR + ETD and ATR groups reduced the low density lipoprotein cholesterol level (-42% and -43%, p<0.001 vs. baseline for both groups), and Max-VWT in thoracic lesions (- 15% and - 14%, p< 0.001 vs. baseline for both groups). ATR + ETD group reduced Max-VWT in abdominal lesions (- 14%, p< 0.001 vs. baseline), whereas ATR group did not (- 1%, p = 0.958 vs. baseline). Conclusion: The results suggest that ATR + ETD treatment for 12 months significantly reduces both thoracic and abdominal aortic plaques, while ATR treatment reduces only thoracic aortic plaques. Source

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