研究者詳細 - 岡村　智教

論文 - 岡村　智教

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Prognostic values of clockwise and counterclockwise rotation for cardiovascular mortality in Japanese subjects: a 24-year follow-up of the National Integrated Project for Prospective Observation of Noncommunicable Disease and Its Trends in the Aged, 1980-2004 (NIPPON DATA80).

Nakamura Y, Okamura T, Higashiyama A, Watanabe M, Kadota A, Ohkubo T, Miura K, Kasagi F, Kodama K, Okayama A, Ueshima H, NIPPON DATA80 Research Group.

Circulation 125 （ 10 ） 1226 - 1233 2012年03月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 0009-7322

Background: Although clockwise rotation and counterclockwise rotation are distinct findings of the ECG, their prognostic significance is rarely studied. Methods and Results: We studied prognostic values of clockwise and counterclockwise rotation on total, cardiovascular disease (CVD), and subtype mortality using the National Integrated Project for Prospective Observation of Noncommunicable Disease and Its Trends in the Aged, 1980-2004 (NIPPON DATA80) database with a 24-year follow-up. At baseline in 1980, data were collected on study participants aged ≥30 years from randomly selected areas in Japan. We followed 9067 participants (44% men; mean age, 51 years). During the 24-year follow-up, mortality was as follows: 2581 total, 887 CVD, 179 coronary heart disease, 173 heart failure, and 411 stroke. The multivariate-adjusted hazard ratio (HR) with the use of the Cox model including biochemical and other ECG variables revealed that clockwise rotation was significantly positively associated with heart failure in men and women combined (HR=1.79; 95% confidence interval [CI], 1.13-2.83; P=0.013), CVD in men and in men and women combined (HR=1.49; 95% CI, 1.12-1.98; P=0.007 in men; HR=1.28; 95% CI, 1.02-1.59; P=0.030 in combined), and total mortality in men and in men and women combined (HR=1.19; 95% CI, 1.00-1.49; P=0.0496inmen; HR=1.15; 95% CI, 1.00-1.32; P=0.045 in combined). Counterclockwise rotation was significantly inversely associated stroke in men and women combined (HR=0.77; 95% CI, 0.62-0.96; P=0.017), CVD in men and in men and women combined (HR=0.74; 95% CI, 0.59-0.94; P=0.011 in men; HR=0.81; 95% CI, 0.70-0.94; P=0.006 in combined), and total mortality in women (HR=0.87; 95% CI, 0.77-0.98; P=0.023). Conclusions: We found a significant positive association of clockwise rotation and a significant inverse association of counterclockwise rotation with CVD mortality in men and in men and women combined, independent of confounding factors including other ECG changes. © 2012 American Heart Association, Inc.

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Effects of public education by television on knowledge of early stroke symptoms among a Japanese population aged 40 to 74 years: a controlled study.

Miyamatsu N, Kimura K, Okamura T, Iguchi Y, Nakayama H, Toyota A, Watanabe M, Morimoto A, Morinaga M, Yamaguchi T

Stroke 43 （ 2 ） 545 - 549 2012年02月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 0039-2499

Background and Purpose-: An educational campaign by mass media has been associated with great increases in the knowledge about early symptoms of stroke. However, few studies were conducted with a controlled community intervention study. Methods-: To clarify the effects of a 1-year television campaign for the whole population on improvement of knowledge about stroke symptoms in 2 cities, a campaign area and a control area in Japan were selected. Before and after the campaign, 1960 randomly selected residents aged 40 to 74 years answered a telephone survey regarding knowledge of early stroke symptoms. We calculated the percentage and 95% CIs of participants who correctly chose all 5 early symptoms of stroke in each area and in each year. Results-: Before the campaign, 53% of participants (95% CI, 50%-55%) in the campaign area and 46% (95% CI, 44%-49%) in the control area correctly chose 5 early symptoms. After the 1-year television campaign, knowledge was significantly improved only in the campaign area (campaign area, 63%; 95% CI, 60%-66%; control area, 51%; 95% CI, 48%-54%). After sex stratification, only women showed improved knowledge of early symptoms. The audience rate for the campaign television programs was found to be higher in women than in men. Conclusions-: A 1-year stroke educational television campaign effectively improved knowledge about early stroke symptoms among Japanese women aged 40 to 74 years. No impact was found among men in this age group. Future studies should examine the impact of this approach on stroke knowledge among younger individuals and whether there are any behavioral changes that contribute to earlier presentation for treatment. © 2011 American Heart Association, Inc.

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CDH13 gene coding T-cadherin influences variations in plasma adiponectin levels in the Japanese population.

Morisaki H, Yamanaka I, Iwai N, Miyamoto Y, Kokubo Y, Okamura T, Okayama A, Morisaki T

Human mutation 33 （ 2 ） 402 - 410 2012年02月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 1059-7794

Adiponectin is most abundantly expressed in adipose tissue and well known to play an important role in metabolic regulation. Several studies have attempted to identify the genetic determinants of metabolic syndrome (MetS), though no study has revealed a cis- or transsingle nucleotide polymorphism (SNP) that affects plasma adiponectin levels, except the adiponectin structure gene and genes encoding adiponectin-regulatory proteins. We performed a genome-wide association study in regards to plasma adiponectin concentrations in 3,310 Japanese subjects. We identified the strongest statistically associated SNP (rs4783244) with adiponectin levels (P = 3.8 × 10 ^-19) in the first intron of CDH13 (T-cadherin) gene in a 30-kb haplotype block covering the promoter region to first intron. In addition, rs12051272 SNP genotypes in linkage disequilibrium with rs4783244 were found to be more significantly associated with adiponectin levels (P = 9.5×10 ^-20) and specifically with the levels of high-molecular weight (HMW) adiponectin, a subtype form associated with parameters related to glucose metabolism. Our results did show more significant association with adiponectin levels than rs12444338 (in CDH13) SNP genotypes reported recently. We suggest that the phenotype-affecting haplotype tagged by rs12051272 SNP would affect the plasma adiponectin levels and that we have to take the CDH13 genotype into account before considering the functional relevance of the adiponectin level. © 2011 Wiley Periodicals, Inc.

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[Effect of cardiovascular risk factors on individual and population medical expenditures: a 10-year cohort study of 4,535 National Health Insurance beneficiaries in Shiga].

Okamura T, Nakamura K, Hayakawa T, Kanda H, Miura K, Okayama A, Ueshima H

Nihon eiseigaku zasshi. Japanese journal of hygiene 67 （ 1 ） 38 - 43 2012年01月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 0021-5082

A 10-year follow-up cohort study of 4,535 National Health Insurance beneficiaries aged 40 to 69 years in Shiga was performed as part of a research project conducted by the Health Promotion Research Committee of the Shiga National Health Insurance Organizations in 2002. The relationship between cardiovascular risk factors and medical expenditures during the 10-year study period has been examined in this cohort. For example, there was a positively graded correlation between blood pressure and individual total medical expenditures per month. The odds ratio for cumulative hospitalization and hazard ratio for all-cause mortality in severe hypertensives were also higher than those in normotensives. However, from the viewpoint of the entire population, the excess medical expenditures attributable to hypertension within the total medical expenditures were higher for mild-to-moderate hypertensives than for severe hypertensives. On the other hand, although individual medical expenditures per month were 1.7-fold higher for participants with 2 or 3 risk factors and obesity, which was broadly equivalent to metabolic syndrome, than for those without these factors, the excess medical expenditures determined by risk clustering within the total medical expenditures were higher in normal-weight people than in obese people because of the higher prevalence of normal weight. These findings suggest that high-risk individuals are a good target of a high-risk approach, such as intensive health guidance, from the viewpoint of medical expenditures. However, another approach for the majority with a low-to-moderate cardiovascular risk should be considered, because they account for a greater proportion of the excess medical expenditures. Another way to solve this problem may be a population approach with an effective method of providing information to citizens.

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Relation of dietary and lifestyle traits to difference in serum leptin of Japanese in Japan and Hawaii

Nakamura Y., Ueshima H., Okuda N., Miura K., Kita Y., Okamura T., Turin T. C., Okayama A., Rodriguez B., Curb J. D., Stamler J.

Nutrition, Metabolism and Cardiovascular Diseases 22 （ 1 ） 14 - 22 2012年01月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 0939-4753

Background and Aims: Previously, we found significantly higher serum leptin in Japanese-Americans in Hawaii than Japanese in Japan. We investigated whether differences in dietary and other lifestyle factors explain higher serum leptin concentrations in Japanese living a Western lifestyle in Hawaii compared with Japanese in Japan. Methods and Results: Serum leptin and nutrient intakes were examined by standardized methods in men and women ages 40-59 years from two population samples, one Japanese-American in Hawaii (88 men, 94 women), the other Japanese in central Japan (123 men, 111 women). Multiple linear regression models were used to assess role of dietary and other lifestyle traits in accounting for serum leptin difference between Hawaii and Japan. Mean leptin was significantly higher in Hawaii than Japan (7.2 ± 6.8 vs 3.7 ± 2.3 ng/ml in men, P < 0.0001; 12.8 ± 6.6 vs 8.5 ± 5.0 in women <0.0001). In men, higher BMI in Hawaii explained over 90% of the difference in serum leptin; in women, only 47%. In multiple linear regression analyses in women, further adjustment for physical activity and dietary factors - alcohol, dietary fiber, iron - produced a further reduction in the coefficient for the difference, total reduction 70.7%; P-value for the Hawaii-Japan difference became 0.126. Conclusion: The significantly higher mean leptin concentration in Hawaii than Japan may be attributable largely to differences in BMI. Differences in nutrient intake in the two samples were associated with only modest relationship to the leptin difference. © 2010 Elsevier B.V.

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Defining patients at extremely high risk for coronary artery disease in heterozygous familial hypercholesterolemia.

Sugisawa T, Okamura T, Makino H, Watanabe M, Kishimoto I, Miyamoto Y, Iwamoto N, Yamamoto A, Yokoyama S, Harada-Shiba M

Journal of atherosclerosis and thrombosis 19 （ 4 ） 369 - 375 2012年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 1340-3478

Aim: Heterozygous patients with familial hypercholesterolemia (FH) are known to be associated with a high risk of coronary artery disease (CAD), which is a major determinant of their clinical outcome. The prognosis of heterozygous FH patients substantially varies, being dependent on the level of their CAD risk, and their therapeutic regimen should be individualized. We assessed critical levels of LDLcholesterol (LDL-C) and Achilles tendon thickness (ATT) to identify heterozygous FH patients at "very high" risk for CAD. Methods: One hundred and nine heterozygous FH patients who had no history of CAD and had had their plasma lipid profile and ATT assessed before treatment were followed up until their first CAD event or 31 December 2010. Multivariable logistic regression models were used to analyze the correlation of LDL-C and/or ATT levels with the risk of developing CAD. Results: During the follow-up period, 21 of the 109 patients had a CAD event, diagnosed by coronary angiogram. Individuals in the highest tertile of LDL-C had a CAD risk 8.29-fold higher than those in the lowest tertile. Individuals in the highest tertile of the ATT group had a 7.82-fold higher CAD risk than those in the lowest tertile. Those who had either LDL-C ≥260 mg/dL or ATT ≥14.5 had a 23.94-fold higher CAD risk than those with LDL-C ≥260 mg/dL and ATT ≥14.5 mm. Conclusions: In heterozygous FH patients, LDL-C 260 mg/dL or higher and/or ATT 14.5 mm or thicker are useful markers for extracting patients at "very high" risk for CAD.

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Does high-sensitivity C-reactive protein or low-density lipoprotein cholesterol show a stronger relationship with the cardio-ankle vascular index in healthy community dwellers?: the KOBE study.

Higashiyama A, Wakabayashi I, Kubota Y, Adachi Y, Hayashibe A, Nishimura K, Sugiyama D, Kadota A, Imano H, Miyamatsu N, Miyamoto Y, Okamura T

Journal of atherosclerosis and thrombosis 19 （ 11 ） 1027 - 1034 2012年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 1340-3478

Aim: High-sensitivity C-reactive protein (hs-CRP) identifies individuals at risk for cardiovascular disease (CVD) without an increased level of low-density lipoprotein cholesterol (LDL-C). The present study was performed to compare hs-CRP and LDL-C in association with the cardio-ankle vascular index (CAVI) in Japanese community dwellers considered to be at low risk for atherosclerosis from their level of traditional CVD risk factors. Methods: A community-based study involving 386 healthy Japanese (261 men and 125 women) without a history of CVD and medications for hypertension, diabetes, and dyslipidemia was performed. Multiple adjustments were performed with linear regression models to estimate the association between CAVI and hs-CRP or LDL-C levels. The participants were divided into four groups on the basis of whether they were above or below the median hs-CRP and LDL-C values, and CAVI was compared among the four groups by analysis of covariance after adjusting for confounders. Results: In multiple linear regression models, hs-CRP showed a significant positive association with CAVI; however, no clear association was observed between CAVI and LDL-C. These results were similar in the analyses among the participants with LDL-C <140 mg/dL or hs-CRP <1.0 mg/L. CAVI was higher in the groups with high hs-CRP than in those with low hs-CRP, irrespective of LDL-C; however, CAVI was highest in the group with high LDL-C and high hs-CRP. Conclusions: The present study suggests that hs-CRP could be a better risk factor assessor for atherosclerosis than LDL-C in individuals considered to be at low risk for atherosclerosis assessed by their traditional CVD risk factors.

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Relation of dietary and lifestyle traits to difference in serum leptin of Japanese in Japan and Hawaii: the INTERLIPID study

Nakamura Y, Ueshima H, Okuda N, Miura K, Kita Y, Okamura T, Turin TC, OkayamaA, Rodriguez B, Curb JD, Stamler J; INTERLIPID Research Group

Nutr Metab Cardiovasc Dis 22 （ 1 ） 14-22 2012年

研究論文（学術雑誌）, 共著, 査読有り

生活習慣病の予防と医療費：10年間の追跡調査による健診所見と医療費の関連：滋賀国保コホート研究の知見から

岡村智教、中村幸志、早川岳人、神田秀幸、三浦克之、岡山明、上島弘嗣

日本衛生学雑誌 67 （ 1 ） 38-43 2012年

研究論文（学術雑誌）, 共著, 査読有り

循環器病の体質と予防戦略－日米比較研究・移民研究からの検証－

岡村智教

日本体質医学会雑誌 74 （ 1 ） 46-52 2012年

研究論文（学術雑誌）, 単著

前期高齢者におけるBMI別医療費と医療費高値群の特性．29,490人の大規模データを用いた検討．

鈴木（斎藤）智子、安村誠司、岡村智教、坂田清美、日高秀樹、三浦克之、岡山　明

日本公衆衛生雑誌 59 （ 7 ） 466-473 2012年

研究論文（学術雑誌）, 共著, 査読有り

Prognostic value of cardiac magnetic resonance imaging for idiopathic pulmonary arterial hypertension before initiating intravenous prostacyclin therapy.

Yamada Y, Okuda S, Kataoka M, Tanimoto A, Tamura Y, Abe T, Okamura T, Fukuda K, Satoh T, Kuribayashi S

Circulation journal : official journal of the Japanese Circulation Society 76 （ 7 ） 1737 - 1743 2012年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 1346-9843

Background: Because few have reported the prognostic significance of cardiac magnetic resonance imaging (CMR) for idiopathic pulmonary arterial hypertension (IPAH), in this study we evaluated the value of CMR measurements as a prognostic predictor of IPAH before starting intravenous prostacyclin therapy. Methods and Results: A total of 121 consecutive CMR studies for evaluating right ventricular (RV) function were reviewed. Forty-one patients were diagnosed with IPAH and served as the study group. Factors, such as age, sex, New York Heart Association functional class (NYHAFC), 6-min walk test, plasma brain natriuretic peptide level, serum uric acid level and CMR measurements were analyzed as predictors of first hospitalization and death. The mean follow- up period was 1,350±769 days. Nine patients were hospitalized because of heart failure, and 4 patients died from cardiopulmonary causes. The univariate analyses suggested that the left ventricular (LV) mass index, the left and right ventricular end-diastolic volume indices (LVEDVI, RVEDVI), the LV and RV end-systolic volume indices (LVESVI, RVESVI) and NYHAFC predicted the risk for hospitalization and that RVEDVI, RVESVI and NYHAFC predicted mortality. The multivariate analyses suggested that RVEDVI and NYHAFC are independent predictors of both hospitalization and mortality. The effects of RVEDVI and NYHAFC on hospitalization were not substantially affected by the concomitant medication. Conclusions: In IPAH patients, the RVEDVI predicts both hospitalization for right heart failure and mortality before initiating intravenous prostacyclin therapy.

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Coronary artery calcification by computed tomography in epidemiologic research and cardiovascular disease prevention.

Sekikawa A, Curb JD, Edmundowicz D, Okamura T, Choo J, Fujiyoshi A, Masaki K, Miura K, Kuller LH, Shin C, Ueshima H

Journal of epidemiology 22 （ 3 ） 188 - 198 2012年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 0917-5040

Both American and European guidelines recommend coronary artery calcification (CAC) as a tool for screening asymptomatic individuals at intermediate risk for coronary heart disease (CHD). These recommendations are based on epidemiologic studies mostly in the United States. We review (1) the use of CAC in primary prevention of CHD in the United States, (2) epidemiologic studies of CAC in asymptomatic adults outside of the United States, and (3) international epidemiologic studies of CAC. This review will not consider clinical studies of CAC among patients or symptomatic individuals. US studies have shown that CAC is a strong independent predictor of CHD in both sexes among middle-aged and old age groups, various ethnic groups, and individuals with and without diabetes and that CAC plays an important role in reclassifying individuals from intermediate to high risk. Studies in Europe support these conclusions. The Electron-Beam Tomography, Risk Factor Assessment Among Japanese and US Men in the Post-World-War-II birth cohort (ERA JUMP) Study is the first international study to compare subclinical atherosclerosis, including CAC among Japanese, Japanese Americans, Koreans, and whites. It showed that as compared with whites, Japanese had lower levels of atherosclerosis, whereas Japanese Americans had similar or higher levels. CAC is being increasingly used as a screening tool for asymptomatic individuals in Europe and the United States. CAC is a powerful research tool, because it enables us to describe differences in atherosclerotic burden across populations. Such research could identify factors responsible for differences among populations, which may improve CHD prevention. © 2012 by the Japan Epidemiological Association.

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Guidelines for the management of familial hypercholesterolemia.

Harada-Shiba M, Arai H, Oikawa S, Ohta T, Okada T, Okamura T, Nohara A, Bujo H, Yokote K, Wakatsuki A, Ishibashi S, Yamashita S

Journal of atherosclerosis and thrombosis 19 （ 12 ） 1043 - 1060 2012年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 1340-3478

Familial hypercholesterolemia (FH) is a highly prevalent autosomal dominant hereditary disease, generally characterized by three major signs, hyper-low-density-lipoprotein (LDL) cholesterolemia, tendon/skin xanthomas and premature coronary artery disease (CAD). Because the risk of CAD is very high in these patients, they should be identified at an early stage of their lives and started on intensive treatment to control LDL-cholesterol. We here introduce a new guideline for the management of FH patients in Japan intending to achieve better control to prevent CAD. Diagnostic criteria for heterozygous FH are 2 or more of 1) LDL-cholesterol ≥180 mg/dL, 2) tendon/skin xanthoma(s), and 3) family history of FH or premature CAD within second degree relatives, for adults; and to have both 1) LDL-cholesterol ≥140 mg/dL and 2) family history of FH or premature CAD within second degree relatives, for children. For the treatment of adult heterozygous FH, intensive lipid control with statins and other drugs is necessary. Other risks of CAD, such as smoking, diabetes mellitus, hypertension etc., should also be controlled strictly. Atherosclerosis in coronary, carotid, or peripheral arteries, the aorta and aortic valve should be screened periodically. FH in children, pregnant women, and women who wish to bear a child should be referred to specialists. For homozygotes and severe heterozygotes resistant to drug therapies, LDL apheresis should be performed. The treatment cost of homozygous FH is authorized to be covered under the program of Research on Measures against Intractable Diseases by the Japanese Ministry of Health, Labour, and Welfare.

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Multicenter study to determine the diagnosis criteria of heterozygous familial hypercholesterolemia in Japan.

Harada-Shiba M, Arai H, Okamura T, Yokote K, Oikawa S, Nohara A, Okada T, Ohta T, Bujo H, Watanabe M, Wakatsuki A, Yamashita S

Journal of atherosclerosis and thrombosis 19 （ 11 ） 1019 - 1026 2012年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 1340-3478

Aim: Heterozygous patients of familial hypercholesterolemia (FH) are known to have a high risk of coronary artery disease (CAD). Early diagnosis and prompt treatment are necessary to prevent their CAD. In this study we tried to amend the Japanese diagnostic criteria of FH for general practitioners by examining each component of the current criteria. Methods: A multicenter study was performed, which included 1356 dyslipidemic patients at 6 centers. Pretreatment demographic information including LDL-cholesterol (LDL-C), Achilles tendon thickness (ATT), family history of FH and premature CAD and the result of genetic analysis were analyzed. Results: Of 1356 patients, 419 were diagnosed with FH by criteria in 1988, which were used as a golden standard. We tried to define FH according to 3 conventional major items, i.e., 1) LDL-C, 2) ATT and/or cutaneous nodular xanthomas (CX), 3) family history of FH and/or family history of premature CAD. We then determined the cutoff of LDL-C using the new criteria. When we used 180 mg/dL as the cutoff of LDL-C, 94.3% of FH patients and 0.85% of non-FH satisfied 2 or more criteria. When we used 190 mg/dL, 92.1% of FH and 0.85% of non-FH satisfied 2 or more criteria; therefore, we chose 180 mg/dL for the cutoff of LDL-C in the new criteria and proposed that the diagnosis of definite FH can be made if 2 or more criteria are satisfied. Conclusions: We examined each component for the diagnosis of heterozygous FH in a multicenter study in Japan.

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Blood cholesterol level and risk of stroke in community-based or worksite cohort studies: a review of Japanese cohort studies in the past 20 years.

Tanaka T, Okamura T

The Keio journal of medicine 61 （ 3 ） 79 - 88 2012年

研究論文（学術雑誌）, ISSN 0022-9717

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Blood cholesterol level and risk of stroke in community-based or worksite cohort studies: a review of Japanese cohort studies in the past 20 years.

Tanaka T, Okamura T

The Keio journal of medicine 61 （ 3 ） 79 - 88 2012年

研究論文（学術雑誌）, ISSN 0022-9717

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Association of short sleep duration with impaired glucose tolerance or diabetes mellitus.

Katano S, Nakamura Y, Nakamura A, Murakami Y, Tanaka T, Takebayashi T, Okayama A, Miura K, Okamura T, Ueshima H, for HIPOP‐OHP Research Group.

Journal of diabetes investigation 2 （ 5 ） 366 - 372 2011年10月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 2040-1116

Aims/Introduction: To examine the cross-sectional relationship between sleep duration and impaired glucose tolerance (IGT), including diabetes mellitus (DM), we analyzed a large-scale healthy workers database in Japan. Materials and Methods: We examined the baseline database of 4143 participants (3415 men and 728 women) aged 19-69years. Sleep duration of participants was categorized into four groups: <6, 6 to <7, 7 to <8 and ≥8h. The physical activity of each participant was classified according to the International Physical Activity Questionnaire (IPAQ). We defined IGT including DM (IGT/DM) in the present study according to previous studies as follows: fasting blood sugar level ≥110mg/dL, or if <8h after meals ≥140mg/dL, or on medication for diabetes mellitus, or those diagnosed as having DM. Logistic regression was applied to estimate the odds ratio (OR) to examine the relationship between IGT/DM, sleep duration and other related factors. Results: The number of participants with IGT/DM was 402 (9.7%). The factors that significantly associated with IGT/DM were age (OR 1.08, 95% confidence interval [CI] 1.07-1.10, P<0.001), high blood pressure (OR 1.94, CI 1.52-2.47, P<0.001), and <6h of sleep duration in comparison with 6 to <7h sleep (OR 2.32, CI 1.18-4.55, P=0.015). The associations of difficulty in sleep initiation, IPAQ classification, current smoking and alcohol intake with IGT/DM were not statistically significant. Conclusions: Our results showed that shorter sleep duration (<6h of sleep duration per night) was associated with a risk of IGT/DM independent of other lifestyle habits and metabolic risk factors. © 2011 Asian Association for the Study of Diabetes and Blackwell Publishing Asia Pty Ltd.

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血漿ホモシステイン高値、関連ビタミン群と動脈硬化性疾患の関連

久保田芳美、吉野佳織、岡村智教

総合臨床（永井書店） 60 （ 10 ） 2047-2052 2011年10月

研究論文（学術雑誌）, 共著

[Smoking is an important risk factor for cardiovascular disease in Japan].

Okamura T, Morimoto A

Nihon rinsho. Japanese journal of clinical medicine 69 Suppl 7 599 - 603 2011年09月

研究論文（学術雑誌）, 共著, ISSN 0047-1852

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