著者

Ahmed Arafa Yoshihiro Kokubo Keiko Shimamoto Rena Kashima Emi Watanabe Yukie Sakai Jiaqi Li Masayuki Teramoto Haytham A. Sheerah Kengo Kusano

出版者

The Japanese Society for Hygiene

雑誌

Environmental Health and Preventive Medicine (ISSN:1342078X)

巻号頁・発行日

vol.27, pp.10, 2022 (Released:2022-03-04)

参考文献数

10

被引用文献数

12

---

Background: A protective role for physical activity against the development of atrial fibrillation (AF) has been suggested. Stair climbing is a readily available form of physical activity that many people practice. Herein, we investigated the association between stair climbing and the risk of AF in a Japanese population.Methods: In this prospective cohort study, we used data of 6,575 people registered in the Suita Study, aged 30–84 years, and had no history of AF. The frequency of stair climbing was assessed by a baseline questionnaire, while AF was diagnosed during the follow-up using a 12-lead ECG, health records, check-ups, and death certificates. We used the Cox regression to calculate the hazard ratios and 95% confidence intervals of AF incidence for climbing stairs in 20–39%, 40–59%, and ≥60% compared with <20% of the time.Results: Within 91,389 person-years of follow-up, 295 participants developed AF. The incidence of AF was distributed across the stair climbing groups <20%, 20–39%, 40–59%, and ≥60% as follows: 3.57, 3.27, 3.46, and 2.63/1,000 person-years, respectively. Stair climbing ≥60% of the time was associated with a reduced risk of AF after adjustment for age and sex 0.69 (0.49, 0.96). Further adjustment for lifestyle and medical history did not affect the results 0.69 (0.49, 0.98).Conclusion: Frequent stair climbing could protect from AF. From a preventive point of view, stair climbing could be a simple way to reduce AF risk at the population level.

著者

Ahmed Arafa Rena Kashima Yoshihiro Kokubo Masayuki Teramoto Yukie Sakai Saya Nosaka Haruna Kawachi Keiko Shimamoto Chisa Matsumoto Qi Gao Chisato Izumi

出版者

The Japanese Society for Hygiene

雑誌

Environmental Health and Preventive Medicine (ISSN:1342078X)

巻号頁・発行日

vol.28, pp.26, 2023 (Released:2023-05-03)

参考文献数

63

被引用文献数

1

---

Background: Alcohol consumption is a modifiable lifestyle, but its role in heart failure (HF) development is controversial. Herein, we investigated the prospective association between alcohol consumption and HF risk.Methods: A total of 2,712 participants (1,149 men and 1,563 women) from the Suita Study were followed up every two years. Cox regression was applied to calculate the hazard ratios (HRs) and 95% confidence intervals (95% CIs) of HF risk for heavy drinking (≥46 g/day in men or ≥23 g/day in women) and never drinking compared to light drinking (<23 g/day in men or <11.5 g/day in women). Then, we combined the results of the Suita Study with those from other eligible prospective cohort studies in a meta-analysis using the random-effects model.Results: In the Suita Study, within a median follow-up period of 8 years, 319 HF cases (162 in men and 157 in women) were detected. In men, but not women, never and heavy drinking carried a higher risk of HF than light drinking: HRs (95% CIs) = 1.65 (1.00, 2.73) and 2.14 (1.26, 3.66), respectively. Alike, the meta-analysis showed a higher risk of HF among heavy drinkers: HR (95% CI) = 1.37 (1.15, 1.62) and abstainers: HR (95% CI) = 1.18 (1.02, 1.37).Conclusion: We indicated a J-shaped association between alcohol consumption and HF risk among Japanese men. The results of the meta-analysis came in line with the Suita Study. Heavy-drinking men should be targeted for lifestyle modification interventions.

著者

Ahmed Arafa Yoshihiro Kokubo Rena Kashima Chisa Matsumoto Masayuki Teramoto Kengo Kusano

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-23-0464, (Released:2023-09-22)

参考文献数

35

被引用文献数

1

---

Background: Atrial fibrillation (AF) is the most diagnosed arrhythmia in clinical settings. The fatty liver index (FLI) is a marker of liver steatosis with potential cardiovascular implications. This study investigated whether FLI could predict the risk of AF.Methods and Results: We used data from the Suita Study, a Japanese population-based prospective cohort study. A total of 2,346 men and 3,543 women, aged 30–84 years, without prevalent AF were included and followed up. The diagnosis of AF was established during follow-up using electrocardiograms, hospital records, and death certificates. FLI was assessed during a baseline health checkup. Hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated for incident AF per FLI quintile and log-transformed FLI. Within a median 14.5 years of follow-up, 142 men and 105 women developed AF. Compared with women in the third (middle) FLI quintile, women in the first (lowest), fourth, and fifth (highest) quintiles showed a higher risk of AF, with multivariable-adjusted HRs of 2.37 (95% CI 1.06–5.31), 2.60 (95% CI 1.30–5.17), and 2.04 (95% CI 1.00–4.18), respectively. No corresponding associations were observed in men. The change in log-transformed FLI was not associated with the risk of AF in either sex.Conclusions: A U-shaped association between FLI and AF risk was detected in Japanese women. FLI could be a screening tool to detect women at high risk of developing AF.

著者

Ahmed Arafa Yoshihiro Kokubo Rena Kashima Masayuki Teramoto Yukie Sakai Saya Nosaka Keiko Shimamoto Haruna Kawachi Chisa Matsumoto Kengo Kusano

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-22-0378, (Released:2022-10-25)

参考文献数

38

被引用文献数

1

---

Background: The incidence and prevalence of atrial fibrillation (AF) are increasing. The white blood cell (WBC) count is an indicator of systemic inflammation and is related to increased cardiovascular disease risk. Using data from the Suita Study, we investigated the association between WBC count and AF risk in the general Japanese population.Methods and Results: This prospective cohort study included 6,884 people, aged 30–84 years, with no baseline AF. Cox regression was used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) for AF incidence by WBC count quintile. Within a median follow-up period of 14.6 years, 312 AF cases were diagnosed. Compared with the lowest WBC count quintile, the highest quintile was associated with an increased AF risk (HR 1.57; 95% CI 1.07–2.29). The association was more pronounced among women than men (HR 2.16 [95% CI 1.10–4.26] and 1.55 [95% CI 0.99–2.44], respectively; P interaction=0.07), and among current than non-smokers (HR 4.66 [95% CI 1.89–11.50] and 1.61 [95% CI 1.01–2.57], respectively; P interaction=0.20). For each 1.0×109-cells/L increment in WBC count, AF risk increased by 9% in men (9% in non-smokers, 10% in current smokers) and 20% in women (13% in non-smokers, 32% in current smokers).Conclusions: A higher WBC count was positively associated with an elevated AF risk in the general Japanese population, especially in women who smoked.

著者

Fangyu Yan Ehab S. Eshak Ahmed Arafa Akiko Tamakoshi Hiroyasu Iso the JACC Study Group

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20220063, (Released:2022-07-23)

参考文献数

54

---

Background: Limited reports from human prospective studies investigated the possible role of vitamin K in the development of lung cancer although vitamin K’s anticarcinogenic activities were verified from several in vitro and in vivo studies.Objectives: We investigated the associations between total vitamin K intake from food and the development of lung cancer based on this large prospective cohort study.Methods: A validated food frequency questionnaire was used to examine vitamin K intake among 42,166 (16,341 men and 25,825 women) at the Japan Collaborative Cohort Study's baseline (1988-1990). Hazard ratios (HRs) and 95% confidence intervals (CIs) of incident lung cancer were calculated using the Cox proportional hazard regression method based on vitamin K consumption quartiles.Results: 430 cases (308 males and 122 women) of lung cancer were documented during a total of 564,127 person-years of follow-up (median follow-up= 14.6 years). Vitamin K consumption was shown to be inversely related to lung cancer risk; the multivariable HR (95 % CI) for the highest vs. lowest quartiles was 0.67 (0.46-0.96; p for trend = 0.010). This relationship appears to be stronger in males [0.62 (0.40-0.96); p for trend=0.016] than in females [0.82 (0.42-1.61); p for trend=0.39] (p for interaction=0.012), and in ever smokers [0.57 (0.36-0.91); p for trend=0.006] than in never smokers [0.79 (0.40-1.55); p for trend=0.37] (p for interaction= 0.30). The individuals' age, BMI, or alcohol consumption status had no effect on the observed connection.Conclusion: Vitamin K consumption reduces the risk of lung cancer. More research is needed to clarify the molecular processes behind this connection.

著者

Ahmed Arafa Yoshihiro Kokubo Haytham A. Sheerah Yukie Sakai Emi Watanabe Jiaqi Li Kyoko Honda-Kohmo Masayuki Teramoto Rena Kashima Masatoshi Koga

出版者

Japan Atherosclerosis Society

雑誌

Journal of Atherosclerosis and Thrombosis (ISSN:13403478)

巻号頁・発行日

pp.63191, (Released:2021-11-20)

参考文献数

55

被引用文献数

12

---

Aim: Weight change could have many health outcomes. This study aimed to investigate the association between weight change and mortality risk due to total cardiovascular disease (CVD), ischemic heart disease (IHD), and stroke among Japanese. Methods: We used Suita Study data from 4,746 people aged 30-79 years in this prospective cohort study. Weight change was defined as the difference between baseline weight and weight at age 20. We used Cox proportional hazards models to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) of total CVD, IHD, and stroke mortality for 1) participants with a weight change (>10, 5 to 10, -5 to -10, and <-10 kg) compared to those with stable weight (-4.9 to 4.9 kg) and 2) participants who moved from one body mass index category (underweight, normal weight, or overweight) to another compared to those with normal weight at age 20 and baseline. Results: Within a median follow-up period of 19.9 years, the numbers of total CVD, IHD, and stroke mortality were 268, 132, and 79, respectively. Weight loss of >10 kg was associated with the increased risk of total CVD mortality 2.07 (1.29, 3.32) and stroke mortality 3.02 (1.40, 6.52). Moving from normal weight at age 20 to underweight at baseline was associated with the increased risk of total CVD, IHD, and stroke mortality: 1.76 (1.12, 2.77), 2.10 (1.13, 3.92), and 2.25 (1.05, 4.83), respectively. Conclusion: Weight loss, especially when moving from normal to underweight, was associated with the increased risk of CVD mortality.

著者

Ahmed Arafa Ehab S. Eshak Kokoro Shirai Isao Muraki Akiko Tamakoshi Hiroyasu Iso

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.32, no.6, pp.298-300, 2022-06-05 (Released:2022-06-05)

参考文献数

10

被引用文献数

1

著者

Jiaqi Li Yoshihiro Kokubo Ahmed Arafa Haytham A. Sheerah Makoto Watanabe Yoko M. Nakao Kyoko Honda-Kohmo Rena Kashima Yukie Sakai Emi Watanabe Masayuki Teramoto Tomoharu Dohi Masatoshi Koga

出版者

Japan Atherosclerosis Society

雑誌

Journal of Atherosclerosis and Thrombosis (ISSN:13403478)

巻号頁・発行日

pp.63317, (Released:2022-01-15)

参考文献数

25

被引用文献数

6

---

Aims: This study aimed to investigate the association of mild hypertensive retinopathy with cardiovascular disease (CVD) risk. Methods: A total of 7,027 residents aged 30–79 years without a history of CVD participated in the annual health checkups and retinal photography assessments. Retinal microvascular abnormalities were graded using the standard protocols and classified according to the Keith–Wagener–Barker classification. Mild hypertensive retinopathy was defined as grades 1 and 2. Cox proportional hazard model was used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) for total CVD and its subtypes according to the presence and absence of mild hypertensive retinopathy. Results: During a median follow-up of 17 years, 351 incident stroke and 247 coronary heart disease (CHD) cases were diagnosed. After adjustment for traditional cardiovascular risk factors, mild hypertensive retinopathy was positively associated with risk of CVD (multivariable HR=1.24; 95% CI, 1.04–1.49) and stroke (1.28; 1.01–1.62) but not with risk of CHD (1.19; 0.89–1.58). Generalized arteriolar narrowing and enhanced arteriolar wall reflex were positively associated with CVD risk, the multivariable HR (95% CI) was 1.24 (1.00– 1.54)and 1.33 (1.02–1.74), respectively. Moreover, mild hypertensive retinopathy was positively associated with stroke risk in normotensive participants. Conclusion: Mild hypertensive retinopathy was positively associated with CVD and stroke risk in the urban Japanese population. Especially, generalized arteriolar narrowing and enhanced arteriolar wall reflex were positively associated with CVD risk. These findings suggested that retinal photography could be helpful for cardiovascular risk stratification in the primary cardiovascular prevention.