1.Relationship between daily eating habits and occurrence of stroke in the O City Cohort I survey: a 26-year follow-up of residents in rural Japan
Mako TODA ; Koutatsu MARUYAMA ; Isao SAITO ; Shinji TANAKA ; Yutaka TAKEUCHI ; Hirotada OKUBO ; Tadahiro KATO
Journal of Rural Medicine 2025;20(1):28-38
Objective: This study aimed to elucidate the relationship between daily eating habits and stroke risk factors in O City, Ehime Prefecture, Japan, using stroke registry data collected over a 26-year follow-up period based on standardized national criteria.Materials and Methods: Overall, 1,793 middle-aged Japanese participants (446 men and 1,347 women) who completed a 33-item Food Frequency Questionnaire (FFQ) and had no history of stroke were matched to those from O City in a stroke registry from 1996 to 2022. Stroke diagnosis for each person was used to determine whether this was their first documented stroke, and we classified strokes as either a cerebral infarction (CI) or a hemorrhagic stroke (HS), the latter which included an intracerebral hemorrhage (ICH) or a subarachnoid hemorrhage (SAH). A Cox proportional hazard regression model was used to examine the association between habitual dietary intake and the occurrence of stroke, using the following covariates: age, body mass index, elevated blood pressure/hypertension, dyslipidemia, prediabetes/diabetes, alcohol consumption, and smoking.Results: During the 26 years of follow-up, 45 men (10.1%) and 76 women (5.6%) had stroke. The CI rate was 70.2% (n=85; 38 men, 47 women). The HS rate was 29.8% (n=36; 7 men and 29 women); of these patients, 26 and 10 had ICH and SAH, respectively. In men, orange intake showed a significant inverse correlation with CI. In women, fresh fish intake showed a significant inverse correlation with CI, while yogurt intake showed a significant inverse correlation with HS.Conclusion: Our results indicated that fresh fish intake was significantly associated with the prevention of CI among women in a Japanese cohort survey.
2.Sex- and age-specific impacts of smoking, overweight/obesity, hypertension, and diabetes mellitus in the development of disabling dementia in a Japanese population.
Mari TANAKA ; Hironori IMANO ; Mina HAYAMA-TERADA ; Isao MURAKI ; Kokoro SHIRAI ; Kazumasa YAMAGISHI ; Takeo OKADA ; Masahiko KIYAMA ; Akihiko KITAMURA ; Yoshihiro TAKAYAMA ; Hiroyasu ISO
Environmental Health and Preventive Medicine 2023;28():11-11
BACKGROUND:
Sex- and age-specific impacts of cardiovascular risk factors on the development of dementia have not been well evaluated. We investigated these impacts of smoking, overweight/obesity, hypertension, and diabetes mellitus on the risk of disabling dementia.
METHODS:
The study participants were 25,029 (10,134 men and 14,895 women) Japanese aged 40-74 years without disabling dementia at baseline (2008-2013). They were assessed on smoking status (non-current or current), overweight/obesity (body mass index ≥25 kg/m2 and ≥30 kg/m2, respectively), hypertension (systolic blood pressure ≥140 mmHg, diastolic blood pressure ≥90 mmHg or any antihypertensive medication use), and diabetes mellitus (a fasting serum glucose ≥126 mg/dL, non-fasting glucose ≥200 mg/dL, hemoglobin A1c ≥6.5% by the National Glycohemoglobin Standardization Program or glucose-lowering medication use) at baseline. Disabling dementia was identified as the level of care required ≥1 and cognitive disability grade ≥IIa according to the National Long-term Care Insurance Database. We used a Cox proportional regression model to estimate hazard ratios and 95% confidence intervals (95% CIs) of disabling dementia according to the cardiovascular risk factors and calculated the population attributable fractions (PAFs).
RESULTS:
During a median follow-up of 9.1 years, 1,322 (606 men and 716 women) developed disabling dementia. Current smoking and hypertension were associated with a higher risk of disabling dementia in both sexes, whereas overweight or obesity was not associated with the risk in either sex. Diabetes mellitus was associated with a higher risk only in women (p for sex interaction = 0.04). The significant PAFs were 13% for smoking and 14% for hypertension in men and 3% for smoking, 12% for hypertension, and 5% for diabetes mellitus in women. The total PAFs of the significant risk factors were 28% in men and 20% in women. When stratified by age, hypertension in midlife (40-64 years) was associated with the increased risk in men, while diabetes mellitus in later-life (65-74 years) was so in women.
CONCLUSIONS
A substantial burden of disabling dementia was attributable to smoking, and hypertension in both sexes and diabetes mellitus in women, which may require the management of these cardiovascular risk factors to prevent dementia.
Male
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Humans
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Female
;
Adult
;
Middle Aged
;
Overweight/complications*
;
East Asian People
;
Cardiovascular Diseases/epidemiology*
;
Hypertension/etiology*
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Diabetes Mellitus/etiology*
;
Obesity/etiology*
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Smoking/epidemiology*
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Risk Factors
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Age Factors
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Dementia/etiology*
3.Relationships of habitual daily alcohol consumption with all-day and time-specific average glucose levels among non-diabetic population samples.
Maho ISHIHARA ; Hironori IMANO ; Isao MURAKI ; Kazumasa YAMAGISHI ; Koutatsu MARUYAMA ; Mina HAYAMA-TERADA ; Mari TANAKA ; Mikako YASUOKA ; Tomomi KIHARA ; Masahiko KIYAMA ; Takeo OKADA ; Midori TAKADA ; Yuji SHIMIZU ; Tomotaka SOBUE ; Hiroyasu ISO
Environmental Health and Preventive Medicine 2023;28():20-20
BACKGROUND:
Alcohol consumption is a prevalent behavior that is bi-directionally related to the risk of type 2 diabetes. However, the effect of daily alcohol consumption on glucose levels in real-world situations in the general population has not been well elucidated. This study aimed to clarify the relationship between alcohol consumption and all-day and time-specific glucose levels among non-diabetic individuals.
METHODS:
We investigated 913 non-diabetic males and females, aged 40-69 years, during 2018-2020 from four communities across Japan. The daily alcohol consumption was assessed using a self-report questionnaire. All-day and time-specific average glucose levels were estimated from the interstitial glucose concentrations measured using the Flash glucose monitoring system for a median duration of 13 days. Furthermore, we investigated the association between all-day and time-specific average glucose levels and habitual daily alcohol consumption levels, using never drinkers as the reference, and performed multiple linear regression analyses after adjusting for age, community, and other diabetes risk factors for males and females separately.
RESULTS:
All-day average glucose levels did not vary according to alcohol consumption categories in both males and females. However, for males, the average glucose levels between 5:00 and 11:00 h and between 11:00 and 17:00 h were higher in moderate and heavy drinkers than in never drinkers, with the difference values of 4.6 and 4.7 mg/dL for moderate drinkers, and 5.7 and 6.8 mg/dL for heavy drinkers. Conversely, the average glucose levels between 17:00 and 24:00 h were lower in male moderate and heavy drinkers and female current drinkers than in never drinkers; the difference values of mean glucose levels were -5.8 for moderate drinkers, and -6.1 mg/dL for heavy drinkers in males and -2.7 mg/dL for female current drinkers.
CONCLUSIONS
Alcohol consumption was associated with glucose levels in a time-dependent biphasic pattern.
Humans
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Male
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Female
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Diabetes Mellitus, Type 2
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Blood Glucose Self-Monitoring
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Blood Glucose
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Alcohol Drinking/epidemiology*
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Risk Factors
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Alcoholic Intoxication
4.High Prevalence of Dysplastic Development of Sacral Vertebral Arches in Pediatric Enuresis
Hideo OZAWA ; Takakuki SHIBANO ; Isao TANAKA ; Toshitaka TANIGUCHI ; Michael B. CHANCELLOR ; Naoki YOSHIMURA
International Neurourology Journal 2023;27(2):124-128
Purpose:
This is the first report to compare 3-dimensional computed tomography (3D-CT) images between pediatric patients with enuresis and children without lower urinary tract symptoms who underwent pelvic CT for other reasons.
Methods:
Forty-seven children (33 boys and 14 girls) with primary enuresis underwent 3D-CT of sacrococcygeal bones. The control group consisted of 138 children (78 boys and 60 girls) who underwent pelvic CT for other reasons. First, we determined the presence or absence of unfused sacral arches at the L4-S3 levels in both cohorts. Subsequently, we compared the fusion of sacral arches in age- and sex-matched children from these 2 groups.
Results:
Dysplastic sacral arches, characterized by lack of fusion at 1 or more levels of the S1–3 arches, were observed in nearly all patients in the enuresis group. In the control group (n=138), 54 of 79 children over 10 years old (68%) exhibited fused sacral arches at 3 S1–3 levels. All 11 control children under 4 years old displayed at least 2 unfused sacral arches at the S1–3 levels. In a comparative study of age- and sex-matched patients with enuresis and control children aged 5 to 13 years (n=32 for each group, with 21 boys and 11 girls; mean age, 8.0±2.2 years [range, 5–13 years]), only 1 patient (3%) in the enuresis group exhibited fusion of all S1–3 arches. In contrast, 20 of 32 control group participants (63%) had 3 fused sacral arches (P<0.0001).
Conclusions
Sacral vertebral arches typically fuse by the age of 10 years. However, in this study, children with enuresis exhibited a significantly elevated prevalence of unfused sacral arches, suggesting that dysplastic development of sacral vertebral arches may play a pathological role in enuresis.
5.Delphi Method Consensus-Based Identification of Primary Trauma Care Skills Required for General Surgeons in Japan
Kazuyuki HIROSE ; Soichi MURAKAMI ; Yo KURASHIMA ; Nagato SATO ; Saseem POUDEL ; Kimitaka TANAKA ; Aya MATSUI ; Yoshitsugu NAKANISHI ; Toshimichi ASANO ; Takehiro NOJI ; Yuma EBIHARA ; Toru NAKAMURA ; Takahiro TSUCHIKAWA ; Toshiaki SHICHINOHE ; Kazufumi OKADA ; Isao YOKOTA ; Naoto HASEGAWA ; Satoshi HIRANO
Journal of Acute Care Surgery 2023;13(2):58-65
Purpose:
General surgeons at regional hospitals should have the primary trauma care skills necessary to treat critically ill trauma patients to withstand transfer. This study was conducted to identify a consensus on primary trauma care skills for general surgeons.
Methods:
An initial list of acute care surgical skills was compiled, and revised by six trauma experts (acute care surgeons); 33 skills were nominated for inclusion in the Delphi consensus survey. Participants (councilors of the Japanese Society for Acute Care Surgery) were presented with the list of 33 trauma care skills and were asked (using web-based software) to rate how strongly they agreed or disagreed (using a 5-point Likert scale) with the necessity of each skill for a general surgeon. The reliability of consensus was predefined as Cronbach’s α ≥ 0.8, and trauma care skills were considered as primarily required when rated 4 (agree) or 5 (strongly agree) by ≥ 80% participants.
Results:
There were 117 trauma care specialists contacted to participate in the Delphi consensus survey panel. In the 1st round, 85 specialists participated (response rate: 72.6%). In the 2nd round, 66 specialists participated (response rate: 77.6%). Consensus was achieved after two rounds, reliability using Cronbach’s α was 0.94, and 34 items were identified as primary trauma care skills needed by general surgeons.
Conclusion
A consensus-based list of trauma care skills required by general surgeons was developed. This list can facilitate the development of a new trauma training course which has been optimized for general surgeons.
6.Patient-related Factors Contributing to Shorter Prognosis than Oncologist’s Estimation of Survival in Terminal Cancer
Yoko OHBA ; Teruaki TANAKA ; Masako SATO ; Isao YOKOTA ; Chizuko TAKIGAWA
Palliative Care Research 2021;16(4):307-314
Objective: To investigate the factors that make observed survival of patients with terminal cancer shorter than oncologists’ estimation. Methods: We retrospectively surveyed the medical records of terminal cancer patients who were referred to our palliative care unit with a predicted survival of 1–3 months and discharged dead from hospital within 3 months. Results: A total of 249 patients were eligible for analysis. One hundred and two patients (41%) had observed survival of less than one month (OS1), and 147 (59%) lived for 1–3 months (OS1–3) as expected. Depressed level of consciousness above Japan Coma Scale II and severely reduced oral intake (a few mouthfuls or less) were associated with unexpected shorter survival. The number of patients who died within two days after sudden deterioration of general condition was significantly higher in OS1 than OS1–3. Conclusion: Although survival of patients with the above factors may be shorter than oncologists’ estimation, it is necessary to examine the physician-side factors that contribute to the inaccuracy of prognosis.
7.Study of Amnesia Caused by Thalamic Hemorrhage
Ataru FUKUDA ; Takashi SOTA ; Tomohiro MORITO ; Ryo TANAKA ; Yoshinori TESHIMA ; Isao KITAHARA ; Makoto ISHIKAWA
The Japanese Journal of Rehabilitation Medicine 2014;51(11):709-715
Background and Purpose : Many cases of amnesia caused by thalamic hemorrhage involve anterior nucleus hemorrhage, dorsomedial nucleus hemorrhage, and intraventricular rupture. In the present study, intraventricular rupture was studied with a focus on cases with hematoma compression at the fornix. Methods : Of 116 patients with thalamic hemorrhage admitted to our hospital, 50 patients aged <70 years who had hemorrhage during their first stroke confined to the thalamus, internal capsule, and corona radiata, and who neither developed hydrocephalus nor showed dementia prior to onset were investigated. Thalamic hemorrhages were classified by CT findings and the extent of intraventricular rupture. Memory was studied by the FIM memory scores on admission and discharge. Results and Conclusion : Patients with dorsomedial nucleus hemorrhage showed no tendency toward amnesia and were equivalent to patients with posterolateral nucleus hemorrhage, which does not usually result in amnesia on its own. Of the 30 patients with posterolateral nucleus hemorrhage, a high degree of amnesia was observed in the 18 with intraventricular rupture. A high proportion of patients with dorsomedial nucleus hemorrhage experienced intraventricular rupture (5 of 6 patients). Equivalent degrees of amnesia were observed in patients with intraventricular rupture with dorsomedial nucleus hemorrhage and those with posterolateral nucleus hemorrhage. The present findings in conjunction with the fact that amnesia in thalamic hemorrhage involves episodic memory impairment suggest that amnesia in patients with dorsomedial or posterolateral nucleus hemorrhage or with intraventricular rupture does not stem from damage to the dorsomedial nucleus, which is part of the Yakovlev circuit involved in emotional memory. Instead, the primary cause appears to be the effects of intraventricular rupture on the Papez circuit surrounding the lateral ventricle and foramen of Monro.
8.Preparation, crystallization and preliminary X-ray diffraction analysis of PH1948, predicted RNA methyltransferase from Pyrococcus horikoshii.
Yong-gui GAO ; Min YAO ; Isao TANAKA
Journal of Zhejiang University. Science. B 2005;6(6):454-456
RNA methyltransferase is responsible for transferring methyl and resulting in methylation on the bases or ribose ring of RNA, which existed widely but mostly remains an open question. A recombinant protein PH1948 predicting RNA methyltransferase from Pyrococcus horikoshii OT3 has been crystallized. The crystals of selenomethionyl PH1948 belong to space group C2, with unit-cell parameters a=207.0 A, b=43.1 A, c=118.2 A, b=92.1 degrees , and diffract X-rays to 2.2 A resolution. The V(M) value was determined to be 2.8 A3/Da, indicating the presence of four protein molecules in the asymmetric unit.
Crystallization
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methods
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Molecular Conformation
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Pyrococcus horikoshii
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enzymology
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X-Ray Diffraction
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tRNA Methyltransferases
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analysis
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chemistry
9.Science Letters:Preparation, crystallization and preliminary X-ray diffraction analysis of PH1948, predicted RNA methyltransferase from Pyrococcus horikoshii
Yong-Gui GAO ; Min YAO ; Isao TANAKA
Journal of Zhejiang University. Science. B 2005;6(6):454-456
RNA methyltransferase is responsible for transferring methyl and resulting in methylation on the bases or ribose ring of RNA, which existed widely but mostly remains an open question. A recombinant protein PH1948 predicting RNA methyltransferase from Pyrococcus horikoshii OT3 has been crystallized. The crystals of selenomethionyl PH1948 belong to space group C2, with unit-cell parameters a=207.0 (A),b=43.1 (A), c= 118.2 (A), β=92.1°, and diffract X-rays to 2.2(A) resolution. The VM value was determined to be 2.8(A)3/Da, indicating the presence of four protein molecules in the asymmetric unit.
10.A Case of Successful Treatment of Intraoperative Pulmonary Tumor Embolism Using Pulmonary Angioscopy under Cardiopulmonary Bypass.
Tomoaki Suzuki ; Kuniyosi Tanaka ; Hidehito Kawai ; Fumiaki Watanabe ; Chiaki Kondo ; Koji Onoda ; Motoshi Takao ; Takatugu Shimono ; Hideto Sinpo ; Isao Yada
Japanese Journal of Cardiovascular Surgery 2001;30(5):274-276
The case involved a 73-year-old woman who underwent surgical resection for right renal cell carcinoma extending to the inferior vena cava. During surgery the tumor thrombus disappeared from the inferior vena cava. We performed transesophageal echocardiography and detected the tumor thrombus in the right ventricle. Therefore, we immediately tried to remove the thrombus using cardiopulmonary bypass. However, we could not find the tumor thrombus in the right ventricle or in the main pulmonary artery. We used angioscopy of the pulmonary artery and detected the tumor thrombus at the orifice of the inferior pulmonary artery. The tumor thrombus was removed under direct visualization. In the event of an intraoperative pulmonary embolism, simple and safe techniques for exact and rapid diagnosis are needed. Intraoperative angioscopy allows direct visualization of the pulmonary arterial branches and appears to be very useful for detection of tumor thrombi even in emergency cases.


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