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Articles by H. Sone
Total Records ( 5 ) for H. Sone
  H. Yokoyama , M. Oishi , K. Kawai and H. Sone
  Aims  We investigated whether a reduced estimated glomerular filtration rate (eGFR) was associated with cardiovascular disease (CVD) prevalence, independent of the effect of microalbuminuria in patients with diabetes.

Methods  In a multicentre, large-scale cohort including 3002 Japanese patients with Type 2 diabetes without macroalbuminuria, the relationship of a reduced eGFR and microalbuminuria with CVD was investigated.

Results  Of those patients, 4.8% had a reduced eGFR and microalbuminuria, 12.7% had a reduced eGFR without microalbuminuria and 18.7% had microalbuminuria but normal eGFR. A reduced eGFR and microalbuminuria were each associated with a doubling of the prevalence of CVD. Compared with patients with no microalbuminuria/normal eGFR [odds ratio (OR) 1.0], the OR for CVD was significantly higher in those with a reduced eGFR without microalbuminuria (OR 1.97) and similarly higher in those with microalbuminuria without a reduced eGFR (OR 1.85). The OR was highest in those with both a reduced eGFR and microalbuminuria (OR 3.97, 95% confidence interval 2.55-6.20). The OR for CVD remained significant after adjustments for age, sex, hypertension, dyslipidaemia, smoking, body mass index, glycated haemoglobin and the duration of diabetes, and remained significant if the cut-off point for microalbuminuria was set at the median albumin : creatinine ratio (13.7 mg/g creatinine). In patients without microalbuminuria, a reduced eGFR was associated with CVD only in the older and male groups.

Conclusion  A reduced eGFR and the presence of microalbuminuria were each associated with a near doubling of the prevalence of CVD, independently of traditional CVD risk factors and glycaemic control in patients with Type 2 diabetes.

  H. Yokoyama , M. Matsushima , K. Kawai , K. Hirao , M. Oishi , H. Sugimoto , H. Takeda , M. Minami , M. Kobayashi and H. Sone
  Aims  To investigate whether a reduced incidence of cardiovascular disease in Type 2 diabetes can be achieved in a newly recruited cohort following the recently advanced concept of multifactorial treatment and followed in primary care settings as compared with earlier cohorts.

Methods  A prospective study was performed in primary care settings at multiple clinics nationwide in the Japan Diabetes Clinical Data Management (JDDM) study group. Subjects were 2984 patients with Type 2 diabetes without prevalent cardiovascular disease. The main outcome measure was the first event of non-fatal or fatal coronary heart disease, ischaemic stroke or peripheral artery disease, and the incidence was compared with other representative cohorts.

Results  There were 90 cardiovascular events over 10 827 person-years of follow-up with a dropout rate of 6%. The incidences (per 1000 person-years, 95% confidence interval) of composite, coronary heart disease, ischaemic stroke and peripheral artery disease in the JDDM study were 8.3 (6.6-10.0), 4.4 (3.2-5.6), 3.1 (2.1-4.2), and 0.7 (0.2-1.2), respectively. Each incidence was lowest in the JDDM study compared with other cohorts (P < 0.01 vs. each cohort). In the JDDM study, significant variables predictive of the occurrence of a cardiovascular event were age, duration of diabetes, HbA1c, HDL cholesterol and urinary albumin.

Conclusion  The novel finding of low cardiovascular disease occurrence in this study may be conferred by the feasibility at primary care settings for providing patients with Type 2 diabetes with favourable control of blood glucose, blood pressure and lipids, coupled with unique ethnicity/country factors.

  Y. Heianza , Y. Arase , K. Fujihara , H. Tsuji , K. Saito , S. D. Hsieh , S. Kodama , H. Shimano , N. Yamada , S. Hara and H. Sone
  Aims  We aimed to characterize the association of insulin resistance, impaired insulin secretion and β-cell dysfunction in relation to HbA1c levels in a non-diabetic range in Japanese individuals without clinically diagnosed diabetes.

Methods  This cross-sectional study included 1444 individuals without a history of outpatient treatment of diabetes or use of insulin or oral hypoglycaemic agents. The homeostasis model assessment of insulin resistance and beta-cell function, insulinogenic index, Matsuda index and disposition index were calculated using data from 75-g oral glucose tolerance tests and compared across quintile (Q) categories of HbA1c levels.

Results  Fasting plasma glucose and 30-min and 60-min plasma glucose (PG) levels were significantly higher when HbA1c exceeded 36 mmol/mol (5.4%). A HbA1c concentration of 36-37 mmol/mol (5.4-5.5%) (Q3) was significantly associated with a 15% lower homeostasis model assessment of β-cell function value and 31% lower insulinogenic index value compared with HbA1c ≤ 32 mmol/mol (≤ 5.1%) (Q1) (<0.01). Further, a HbA1c concentration of 38-40 mmol/mol (5.6-5.8%) (Q4) was associated with 17% (<0.01) and 24% (<0.05) reductions in those indexes, respectively. However, the homeostasis model assessment of insulin resistance was not significantly elevated and the Matsuda index was not significantly lower unless HbA1c exceeded 41 mmol/mol (5.9%). Individuals with HbA1c ≥ 41 mmol/mol (≥ 5.9%) (Q5) had a 69% lower disposition index than those with a HbA1c concentration of ≤ 32 mmol/mol (≤ 5.1%) (Q1).

Conclusions  Elevated HbA1c levels ≥ 41 mmol/mol (≥ 5.9%) were associated with substantial reductions in insulin secretion, insulin sensitivity and β-cell dysfunction in Japanese individuals not treated for diabetes. High normal HbA1c levels of 36-40 mmol/mol (5.4-5.8%) were also associated with impaired insulin secretion without marked insulin resistance in Japanese individuals.

  Y. Yachi , Y. Tanaka , I. Nishibata , A. Sugawara , S. Kodama , K. Saito and H. Sone
  Aims  Maternal obesity and weight gain since early adulthood are known predictors of gestational diabetes in Western countries. However, their impact has not been evaluated well in Asia, where mean BMI levels are generally lower than in Western countries. We therefore examined the associations of BMI at age 20 years and BMI change since age 20 years with the risk of gestational diabetes in Japanese pregnant women.

Methods  Six hundred and twenty-four consecutive pregnant women without recognized diabetes before pregnancy, whose initial obstetric clinic visit was before 13 weeks' gestation, were prospectively observed. Weight at age 20 years was self-reported. Baseline height and weight measurements were obtained at the initial obstetric visit. Multivariate logistic regression analysis estimated the risk of incident gestational diabetes for BMI change since 20 years and BMI at age 20 years.

Results  Twenty-eight women developed incident gestational diabetes. By multivariate logistic regression analysis that adjusted for maternal age, parity and baseline BMI, we observed a statistically significant inverse association between BMI at age 20 years and incidence of gestational diabetes (odds ratio 0.68, 95% CI 0.51-0.92). Similarly, when we assessed the association of BMI change since age 20 years, adjusted for maternal age and parity, BMI change was associated with an increased risk of gestational diabetes (odds ratio 1.26, 95% CI 1.03-1.53). When we focused on the threshold of risk of gestational diabetes, women with BMI at 20 years of less than 18 kg/m2 had a 6.30-fold (2.26-17.59) greater risk than women with both BMI at age 20 years of 18 kg/m2 or more and BMI change since age 20 years of less than 1.85.

Conclusions  Both low BMI at age 20 years and BMI change since age 20 years were significantly associated with increased risk of incident gestational diabetes.

  Y. Heianza , Y. Arase , S. Kodama , S. D. Hsieh , H. Tsuji , K. Saito , H. Shimano , S. Hara and H. Sone
 

Aims

To investigate whether living alone was associated with the presence of undiagnosed diabetes and whether this association could be attenuated by modifiable lifestyle habits.

Methods

This cross-sectional study included 6400 Japanese men without a history of diagnosed diabetes. Individuals with currently undiagnosed diabetes were identified through fasting glucose concentration ≥7.0 mmol/l or HbA1c concentration ≥ 48 mmol⁄mol (≥ 6.5%). Effect modification was examined using body mass index, hypertension, history of dyslipidaemia, drinking habits, smoking habits, physical activity, vegetable intake, emotional stress and depressed mood.

Results

Men who lived alone (= 1098) had a significantly elevated odds ratio for having undiagnosed diabetes in an age-adjusted model (odds ratio 1.45, 95% CI 1.07, 1.96; = 0.018). After adjustment for lifestyle factors, the association was slightly attenuated (odds ratio 1.40, 95% CI 1.02, 1.91; = 0.036). After further adjustment for all factors mentioned above, living alone was still marginally significantly associated with the presence of undiagnosed diabetes (odds ratio 1.38, 95% CI 1.003, 1.90; = 0.048). A significant association of living alone with the presence of undetected diabetes was particularly observed among men who were overweight, currently smoked and were physically inactive, or had any one of those three factors.

Conclusions

The association between undiagnosed diabetes and living alone can be partially influenced by modifiable lifestyle factors. Men who lived alone, especially those who did not engage in favourable lifestyle habits, were more likely to have undiagnosed diabetes. Such individuals have a higher probability of having undetected diabetic hyperglycaemia and would need to undergo glucose tests to identify the disease.

 
 
 
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