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Articles by S. Watanabe
Total Records ( 2 ) for S. Watanabe
  M. Hiramatsu , M. Oguri , K. Kato , T. Yoshida , T. Fujimaki , H. Horibe , K. Yokoi , S. Watanabe , K. Satoh , Y. Aoyagi , M. Tanaka , H. Yoshida , S. Shinkai , Y. Nozawa , T. Murohara and Y. Yamada
  Aims  We previously showed that the C[RIGHTWARDS ARROW]T polymorphism (rs6929846) of BTN2A1 was significantly associated with myocardial infarction in Japanese individuals by a genome-wide association study. Given that diabetes mellitus is an important risk factor for myocardial infarction, the association of rs6929846 of BTN2A1 with myocardial infarction might be attributable, at least in part, to its effect on susceptibility to diabetes. The purpose of this study was to examine the relation of rs6929846 of BTN2A1 to Type 2 diabetes mellitus.

Methods  A total of 8650 Japanese individuals from two independent subject panels were examined: Panel A comprised 1141 individuals with Type 2 diabetes and 3161 control subjects and panel B comprised 1664 individuals with Type 2 diabetes and 2684 control subjects.

Results  The chi-square test revealed that rs6929846 of BTN2A1 was significantly related to the prevalence of Type 2 diabetes in subject panel A (P = 0.0002) and subject panel B (P = 0.006). Multivariable logistic regression analysis with adjustment for age, sex, body mass index and smoking status revealed that rs6929846 was significantly associated with Type 2 diabetes (P = 0.0006; odds ratio 1.25) in all individuals, with the T allele representing a risk factor for this condition. Multiple regression analysis with adjustment for age, sex and body mass index revealed that rs6929846 was significantly (P = 0.04) related to blood glycosylated haemoglobin content in control subjects.

Conclusions BTN2A1 may be a susceptibility gene for Type 2 diabetes in Japanese individuals.

  T. M. B Farias , R. F Gennari , C Etchevarne and S. Watanabe

Two indigenous ceramics fragments, one from Lagoa Queimada (LQ) and another from Barra dos Negros (BN), both sites located on Bahia state (Brazil), were dated by termoluminescence (TL) method. Each fragment was physically prepared and divided into two fractions, one was used for TL measurement and the other for annual dose determination. The TL fraction was chemically treated, divided in sub samples and irradiated with several doses. The plot extrapolation from TL intensities as function of radiation dose enabled the determination of the accumulated dose (Dac), 3.99 Gy and 1.88 Gy for LQ and BN, respectively. The annual dose was obtained through the uranium, thorium and potassium determination by ICP-MS. The annual doses (Dan) obtained were 2.86 and 2.26 mGy/year. The estimated ages were ~1375 and 709 y for BN and LQ ceramics, respectively. The ages agreed with the archaeologists' estimation for the Aratu and Tupi tradition periods, respectively.

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