Hideo Tanaka

Publications (10)73.25 Total impact

• Article: Association of body mass index and risk of death from pancreas cancer in Asians: findings from the Asia Cohort Consortium.

  Yingsong Lin, Rong Fu, Eric Grant, Yu Chen, Jung Eun Lee, Prakash C Gupta, Kunnambath Ramadas, Manami Inoue, Shoichiro Tsugane, Yu-Tang Gao, [......], Faruque Parvez, Betsy Rolland, Dale McLerran, Rashmi Sinha, Paolo Boffetta, Wei Zheng, Mark Thornquist, Ziding Feng, Daehee Kang, John D Potter
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  ABSTRACT: We aimed to examine the association between BMI and the risk of death from pancreas cancer in a pooled analysis of data from the Asia Cohort Consortium. The data for this pooled analysis included 883 529 men and women from 16 cohort studies in Asian countries. Cox proportional-hazards models were used to estimate the hazard ratios and 95% confidence intervals for pancreas cancer mortality in relation to BMI. Seven predefined BMI categories (<18.5, 18.5-19.9, 20.0-22.4, 22.5-24.9, 25.0-27.4, 27.5-29.9, ≥30) were used in the analysis, with BMI of 22.5-24.9 serving as the reference group. The multivariable analyses were adjusted for known risk factors, including age, smoking, and a history of diabetes. We found no statistically significant overall association between each BMI category and the risk of death from pancreas cancer in all Asians, and obesity was unrelated to the risk of mortality in both East Asians and South Asians. Age, smoking, and a history of diabetes did not modify the association between BMI and the risk of death from pancreas cancer. In planned subgroup analyses among East Asians, an increased risk of death from pancreas cancer among those with a BMI less than 18.5 was observed for individuals with a history of diabetes; hazard ratio=2.01 (95% confidence interval: 1.01-4.00) (P for interaction=0.07). The data do not support an association between BMI and the risk of death from pancreas cancer in these Asian populations.
  European journal of cancer prevention: the official journal of the European Cancer Prevention Organisation (ECP) 10/2012; · 2.21 Impact Factor
• Article: Association between the catechol-O-methyltransferase (rs4680: Val158Met) polymorphism and serum alanine aminotransferase activity.

  Mineyoshi Hiyoshi, Hirokazu Uemura, Kokichi Arisawa, Mariko Nakamoto, Asahi Hishida, Rieko Okada, Keitaro Matsuo, Yoshikuni Kita, Hideshi Niimura, Nagato Kuriyama, Hinako Nanri, Keizo Ohnaka, Sadao Suzuki, Haruo Mikami, Michiaki Kubo, Hideo Tanaka, Nobuyuki Hamajima
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  ABSTRACT: In our previous proteomic study in rat liver damaged by carbon tetrachloride, soluble catechol-O-methyltransferase (COMT) increased as a phosphorylated form and decreased as a dephosphorylated form. This finding raised the possibility that the COMT protein is associated with liver function. Thus, we hypothesized that (1) the COMT gene contributes to liver homeostasis and (2) a COMT polymorphism (rs4680: Val158Met) causing thermolability of enzymatic activity affects liver enzymes (e.g., aspartate aminotransferase (AST), alanine aminotransferase (ALT) and gamma-glutamyl transpeptidase (γ-GT)) in serum. To investigate (2), we statistically analyzed the association between COMT genotypes and serum ALT activity in a cross-sectional study using data from the Japan Multi-Institutional Collaborative Cohort (J-MICC) Study. We conducted a multiple logistic regression analysis for males (n=838) and females (n=970). Those participants having missing values or a past history of liver cirrhosis or liver cancer were excluded. ALT values were divided into two; elevated (30IU/L ≤; males n=239, females n=90) and normal (<30IU/L; males n=599, females n=880). In females, non-adjusted and adjusted odds ratios for ALT values in the rs4680 A/A homozygote (n=126) compared with the wild-type G/G homozygote (n=397) were 0.37 (95% CI 0.14-0.96) and 0.34 (95% CI 0.13-0.93), respectively. In males, an analysis of the population aged 35-69 did not reveal any significant difference, but the population aged 45-54 had a significant difference in the non-adjusted and adjusted odds ratio in the G/A heterozygote (n=89) (0.50 (95% CI 0.27-0.92) and 0.35 (95% CI 0.18-0.71)) and in the A/A homozygote (n=22) (0.34 (95% CI 0.11-0.99) and 0.22 (95% CI 0.07-0.72)), compared with the G/G homozygote (n=88). These data suggest that the COMT polymorphism affects serum ALT activity to maintain liver function.
  Gene 04/2012; 496(2):97-102. · 2.34 Impact Factor
• Article: Gene variants in PPARD and PPARGC1A are associated with timing of natural menopause in the general Japanese population.

  Hirokazu Uemura, Mineyoshi Hiyoshi, Kokichi Arisawa, Miwa Yamaguchi, Mariko Naito, Sayo Kawai, Nobuyuki Hamajima, Keitaro Matsuo, Naoto Taguchi, Naoyuki Takashima, Sadao Suzuki, Kazuyo Hirasada, Haruo Mikami, Keizo Ohnaka, Aya Yoshikawa, Michiaki Kubo, Hideo Tanaka
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  ABSTRACT: Timing of menopause affects postmenopausal health risks. The objective of this study was to evaluate the associations of the single nucleotide polymorphisms (SNPs) in peroxisome proliferator-activated receptor (PPAR)-related genes (PPARD, PPARG, and PPARGC1A) and environmental factors with timing of natural menopause among the general Japanese population. We analyzed cross-sectional data from 1758 women aged 40-69 years who were enrolled in the baseline surveys of the Japan Multi-institutional Collaborative Cohort (J-MICC) Study. Associations of timing of natural menopause with its probable covariates and with target gene variants were evaluated by univariate and multivariate Cox proportional hazards models. Lower body mass index and later age at menarche were significantly associated with earlier natural menopause. Women with minor alleles at T-48444C in PPARD showed a significantly higher adjusted hazard ratio of 1.57 (95% confidence interval: 1.18-2.10) for earlier natural menopause. In contrast, women with minor alleles at Thr394Thr in PPARGC1A showed a significantly lower adjusted hazard ratio of 0.86 (0.76-0.97) for earlier natural menopause. These associations did not substantially alter when re-analyzed after excluding the subjects who self-reported a history of diabetes or the subjects whose age was more than 65 years. Gene variants in PPARD and PPARGC1A might be associated with timing of natural menopause, probably through direct actions on the ovaries, among the general Japanese population.
  Maturitas 04/2012; 71(4):369-75. · 2.77 Impact Factor
• Source

  Available from: Keitaro Matsuo

  Article: Association between a genome-wide association study-identified locus and the risk of lung cancer in Japanese population.

  Hidemi Ito, James D McKay, Satoyo Hosono, Toyoaki Hida, Yasushi Yatabe, Tetsuya Mitsudomi, Paul Brennan, Hideo Tanaka, Keitaro Matsuo
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  ABSTRACT: Genome-wide association studies have identified 15q25 and 5p15 as lung cancer risk chromosomal regions in whites. The genetic structures of these loci differ between Asians and whites, however, indicating the need for additional studies in Asian populations. To examine the impact of 15p25 and 5p15 on lung cancer risk and smoking intensity, we conducted a case-control study in Japanese population. We also examined whether these loci modify the effect of smoking behavior on lung cancer risk. Subjects were 716 Japanese patients with lung cancer and 716 controls. Associations were examined by logistic regression models with adjustment for potential confounders. We found that the variants of rs12914385 and rs931794 on 15q25 modified the effect of cumulative tobacco smoking on lung cancer risk but that these two loci showed no statistically significant main effects on lung cancer risk. Compared with never smoking without the risk allele of rs931794, odds ratio for heavy smoking without the risk allele was 4.03 (95% confidence interval: 2.45-6.62) and that with the risk allele was 8.09 (5.09-12.9), and the joint effect of rs931734 and cumulative tobacco consumption was statistically significant (pinteraction < 0.001). A similar impact was observed with rs12914385 at chromosome 15q25 (pinteraction = 0.021). Associations for the TERT-CLPM1L locus on 5p15 with lung cancer risk in Japanese patients were of a similar magnitude to those in whites. These results support the contribution of 15q25 and 5p15 to lung cancer and indicate that the 15q25 region modifies the well-established effect of smoking on the risk of lung cancer in a Japanese population.
  Journal of thoracic oncology: official publication of the International Association for the Study of Lung Cancer 03/2012; 7(5):790-8. · 4.55 Impact Factor
• Article: Efficacy and safety of nilotinib in Japanese patients with imatinib-resistant or -intolerant Ph+ CML or relapsed/refractory Ph+ ALL: a 36-month analysis of a phase I and II study.

  Kensuke Usuki, Arinobu Tojo, Yasuhiro Maeda, Yukio Kobayashi, Akira Matsuda, Kazuma Ohyashiki, Chiaki Nakaseko, Tatsuya Kawaguchi, Hideo Tanaka, Koichi Miyamura, Yasushi Miyazaki, Shinichiro Okamoto, Kenji Oritani, Masaya Okada, Noriko Usui, Tadashi Nagai, Taro Amagasaki, Aira Wanajo, Tomoki Naoe
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  ABSTRACT: Although the tyrosine kinase inhibitor (TKI) imatinib is often used as first-line therapy for newly diagnosed chronic myelogenous leukemia (CML), some patients fail to respond, or become intolerant to imatinib. Nilotinib is a potent and selective second-generation TKI, with confirmed efficacy and tolerability in patients with imatinib-resistant or -intolerant CML. A phase I/II study was conducted in Japanese patients with imatinib-resistant or -intolerant CML or relapsed/refractory Ph+ acute lymphoblastic leukemia. Thirty-four patients were treated with nilotinib for up to 36 months. Major cytogenetic response was achieved in 15/16 patients (93.8%) with chronic-phase CML within a median of approximately 3 months. Major molecular response was achieved in 13/16 patients (81.3%). These responses were sustained at the time of the most recent evaluation in 13 patients and 11 patients, respectively. Hematologic and cytogenetic responses were also observed in patients with advanced CML. The BCR-ABL mutation associated with the most resistance to available TKIs, T315I, was observed in three patients. Common adverse events included rash, nasopharyngitis, leukopenia, neutropenia, thrombocytopenia, nausea, headache and vomiting. Most adverse events resolved following nilotinib dose interruptions/reductions. These results support the favorable long-term efficacy and tolerability of nilotinib in Japanese patients with imatinib-resistant or -intolerant chronic-phase chronic myeloid leukemia.
  International journal of hematology 02/2012; 95(4):409-19. · 1.17 Impact Factor
• Source

  Available from: Mariko Naito

  Article: Pro-/anti-inflammatory cytokine gene polymorphisms and chronic kidney disease: a cross-sectional study.

  Rieko Okada, Kenji Wakai, Mariko Naito, Emi Morita, Sayo Kawai, Nobuyuki Hamajima, Megumi Hara, Naoyuki Takashima, Sadao Suzuki, Toshiro Takezaki, Keizo Ohnaka, Kokichi Arisawa, Hiroshi Hirohata, Keitaro Matsuo, Haruo Mikami, Michiaki Kubo, Hideo Tanaka
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  ABSTRACT: The aim of this study was to explore the associations between common potential functional promoter polymorphisms in pro-/anti-inflammatory cytokine genes and kidney function/chronic kidney disease (CKD) prevalence in a large Japanese population. A total of 3,323 subjects aged 35-69 were genotyped for all 10 single nucleotide polymorphisms (SNPs) in the promoter regions of candidate genes with minor allele frequencies of > 0.100 in Japanese populations. The estimated glomerular filtration rate (eGFR) and CKD prevalence (eGFR < 60 ml/min/1.73 m2) of the subjects were compared among the genotypes. A higher eGFR and lower prevalence of CKD were observed for the homozygous variants of IL4 -33CC (high IL-4 [anti-inflammatory cytokine]-producing genotype) and IL6 -572GG (low IL-6 [pro-inflammatory cytokine]-producing genotype). Subjects with IL4 CC + IL6 GG showed the highest mean eGFR (79.1 ml/min/1.73 m2) and lowest CKD prevalence (0.0%), while subjects carrying IL4 TT + IL6 CC showed the lowest mean eGFR (73.4 ml/min/1.73 m2) and highest CKD prevalence (17.9%). The functional promoter polymorphisms IL4 T-33C (rs2070874) and IL6 C-572G (rs1800796), which are the only SNPs that affect the IL-4 and IL-6 levels in Japanese subjects, were associated with kidney function and CKD prevalence in a large Japanese population.
  BMC Nephrology 01/2012; 13:2. · 2.18 Impact Factor
• Source

  Available from: Keitaro Matsuo

  Article: Association between body-mass index and risk of death in more than 1 million Asians.

  Wei Zheng, Dale F McLerran, Betsy Rolland, Xianglan Zhang, Manami Inoue, Keitaro Matsuo, Jiang He, Prakash Chandra Gupta, Kunnambath Ramadas, Shoichiro Tsugane, [......], San-Lin You, Woon-Puay Koh, Sue K Park, Yu Chen, Chen-Yang Shen, Mark Thornquist, Ziding Feng, Daehee Kang, Paolo Boffetta, John D Potter
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  ABSTRACT: Most studies that have evaluated the association between the body-mass index (BMI) and the risks of death from any cause and from specific causes have been conducted in populations of European origin. We performed pooled analyses to evaluate the association between BMI and the risk of death among more than 1.1 million persons recruited in 19 cohorts in Asia. The analyses included approximately 120,700 deaths that occurred during a mean follow-up period of 9.2 years. Cox regression models were used to adjust for confounding factors. In the cohorts of East Asians, including Chinese, Japanese, and Koreans, the lowest risk of death was seen among persons with a BMI (the weight in kilograms divided by the square of the height in meters) in the range of 22.6 to 27.5. The risk was elevated among persons with BMI levels either higher or lower than that range--by a factor of up to 1.5 among those with a BMI of more than 35.0 and by a factor of 2.8 among those with a BMI of 15.0 or less. A similar U-shaped association was seen between BMI and the risks of death from cancer, from cardiovascular diseases, and from other causes. In the cohorts comprising Indians and Bangladeshis, the risks of death from any cause and from causes other than cancer or cardiovascular disease were increased among persons with a BMI of 20.0 or less, as compared with those with a BMI of 22.6 to 25.0, whereas there was no excess risk of either death from any cause or cause-specific death associated with a high BMI. Underweight was associated with a substantially increased risk of death in all Asian populations. The excess risk of death associated with a high BMI, however, was seen among East Asians but not among Indians and Bangladeshis.
  New England Journal of Medicine 02/2011; 364(8):719-29. · 53.30 Impact Factor
• Source

  Available from: Wen-Harn Pan

  Article: Body mass index and diabetes in Asia: a cross-sectional pooled analysis of 900,000 individuals in the Asia cohort consortium.

  Paolo Boffetta, Dale McLerran, Yu Chen, Manami Inoue, Rashmi Sinha, Jiang He, Prakash Chandra Gupta, Shoichiro Tsugane, Fujiko Irie, Akiko Tamakoshi, [......], San-Lin You, Woon-Puay Koh, Sue K Park, Chen-Yang Shen, Mark Thornquist, Daehee Kang, Betsy Rolland, Ziding Feng, Wei Zheng, John D Potter
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  ABSTRACT: The occurrence of diabetes has greatly increased in low- and middle-income countries, particularly in Asia, as has the prevalence of overweight and obesity; in European-derived populations, overweight and obesity are established causes of diabetes. The shape of the association of overweight and obesity with diabetes risk and its overall impact have not been adequately studied in Asia. A pooled cross-sectional analysis was conducted to evaluate the association between baseline body mass index (BMI, measured as weight in kg divided by the square of height in m) and self-reported diabetes status in over 900,000 individuals recruited in 18 cohorts from Bangladesh, China, India, Japan, Korea, Singapore and Taiwan. Logistic regression models were fitted to calculate cohort-specific odds ratios (OR) of diabetes for categories of increasing BMI, after adjustment for potential confounding factors. OR were pooled across cohorts using a random-effects meta-analysis. The sex- and age-adjusted prevalence of diabetes was 4.3% in the overall population, ranging from 0.5% to 8.2% across participating cohorts. Using the category 22.5-24.9 kg/m²) as reference, the OR for diabetes spanned from 0.58 (95% confidence interval [CI] 0.31, 0.76) for BMI lower than 15.0 kg/m² to 2.23 (95% CI 1.86, 2.67) for BMI higher than 34.9 kg/m². The positive association between BMI and diabetes prevalence was present in all cohorts and in all subgroups of the study population, although the association was stronger in individuals below age 50 at baseline (p-value of interaction<0.001), in cohorts from India and Bangladesh (p<0.001), in individuals with low education (p-value 0.02), and in smokers (p-value 0.03); no differences were observed by gender, urban residence, or alcohol drinking. This study estimated the shape and the strength of the association between BMI and prevalence of diabetes in Asian populations and identified patterns of the association by age, country, and other risk factors for diabetes.
  PLoS ONE 01/2011; 6(6):e19930. · 4.09 Impact Factor
• Article: Interaction between CYP19A1 polymorphisms and body mass index in the risk of endometrial cancer in postmenopausal Japanese women.

  Satoyo Hosono, Keitaro Matsuo, Hidemi Ito, Miki Watanabe, Kaoru Hirose, Toru Nakanishi, Kazuo Tajima, Hideo Tanaka
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  ABSTRACT: Extra-ovarian sex hormone production plays an important role in endometrial cancer in postmenopausal women. Aromatase, which is encoded by CYP19A1, is a key enzyme in estrogen biosynthesis after menopause. To examine the association between polymorphisms in CYP19A1 and endometrial cancer risk among postmenopausal Japanese women, we conducted a hospital-based case control study in 48 patients with histologically diagnosed incident endometrial cancer and 253 non-cancer control subjects. Information on lifestyle factors was obtained from a self-administered questionnaire. Twenty-five tag SNPs (single nucleotide polymorphisms) of CYP19A1 were examined by TaqMan methods and haplotype blocks were identified by LD analysis. Associations were assessed by an unconditional logistic regression model adjusted for potential confounders. We found no significant association between CYP19A1 genotypes and haplotypes and endometrial cancer risk. However, among women with a BMI (body mass index) >23, significantly positive associations were observed for rs2899473, rs1865803, rs16964220, rs2008691, rs17647707, rs17647719, rs1902586, rs936306, and rs1004982, while negative associations were seen for rs1902585, rs752760 and rs2445768. These showed significant interactions with BMI. Further, of the six haplotype blocks identified, the haplotype CTT of block 1, GATA of block 5 and CA of block 6 showed statistically significant interactions with BMI. These results suggest that CYP19A1 polymorphisms might play an important role in the etiology of endometrial cancer, and that the effect of these polymorphisms might be influenced by BMI.
  Asian Pacific journal of cancer prevention: APJCP 01/2011; 12(10):2747-52. · 0.66 Impact Factor
• Source

  Available from: Mariko Naito

  Article: Pro/anti-inflammatory cytokine gene polymorphisms and chronic kidney disease: a cross-sectional study

  Rieko Okada, Kenji Wakai, Mariko Naito, Emi Morita, Sayo Kawai, Nobuyuki Hamajima, Megumi Hara, Naoyuki Takashima, Sadao Suzuki, Toshiro Takezaki, Keizo Ohnaka, Kokichi Arisawa, Hiroshi Hirohata, Keitaro Matsuo, Haruo Mikami, Michiaki Kubo, Hideo Tanaka
  [show abstract] [hide abstract]
  ABSTRACT: Background: The aim of this study was to explore the associations between common potential functional promoter polymorphisms in pro-/anti-inflammatory cytokine genes and kidney function/chronic kidney disease (CKD) prevalence in a large Japanese population.