1.A NEW SPECIES OF SIMULIUM (NEVERMANNIA) FROM THE OGASAWARA (BONIN) ISLANDS, JAPAN (DIPTERA: SIMULIIDAE)
HIROYUKI TAKAOKA ; KATSUMI SAITO
Tropical Medicine and Health 2006;34(4):155-158
Simulium (Nevermannia) satakei sp. nov. is described on the basis of the pupa and mature larvae collected from the Ogasawara (Bonin) Islands in Japan. This new species, tentatively (due to lack of the adult stage) assigned to the vernum species-group of the subgenus Nevermannia, is characterized in the pupa by four gill filaments lacking transverse ridges, and in the larva by a small, M-shaped postgenal cleft, antenna without hyaline bands, and simple rectal papilla. The morphological differences among this new species and the two known species, S. (N.) uemotoi from Japan and S. (N.) karzhantacum from Uzbekistan and Turkmenistan, are noted. This is the second species of the family Simuliidae from the Islands.
2.Characteristic Lifestyles in 6-year-old Children with Obese Parents: Results of the Toyama Birth Cohort Study
Michikazu SEKINE ; Takashi YAMAGAMI ; Tomohiro SAITO ; Seiichiro NANRI ; Katsuhiko KAWAMINAMI ; Noritaka TOKUI ; Katsumi YOSHIDA ; Sadanobu KAGAMIMORI
Environmental Health and Preventive Medicine 2001;6(2):104-108
Objectives: The aim of this study was to identify characteristic lifestyles in children with obese parents. Methods: 8,030 children (4,072 males and 3,958 females) aged 6 to 7 years were investigated. A questionnaire relating to the lifestyles of children was distributed through elementary schools for completion by parents. The heights and weights of parents were self-reported. A parent with a body mass index (weight in kilograms divided by the square of height in meters) greater than the 90th percentile for gender (26.7 kg/m2 for fathers and 24.3 kg/m2 for mothers) was defined as an obese parent. A chi-square test for each trend was applied to evaluate an increasing trend in the frequency or level of each lifestyle in children with obese parents. Results: Children with obese parents were significantly associated with increasing trends in the proportions categorized by irregular intake of breakfast, faster eating, longer TV watching, and shorter sleeping hours. Conclusions: These lifestyles are considered to be possible risk factors for the development of obesity. These characteristic lifestyles observed in children with obese parents could strengthen the relationship between child and parental body compositions, in addition to the genetic predisposition to obesity in children with obese parents. These findings indicate that education with lifestyle modification for obese parents will be required to prevent further weight gain in children with obese parents.
Child
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Parents
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Life Style
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seconds
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trends
3.Diagnosis of Unstable Angina Patients with Significant Coronary Artery Stenosis by History-Taking and Electrocardiography.
Masahiko SODA ; Yasutaka SHIBATA ; Keiji FUNAHASHI ; Yumiko NODA ; Yumika NISHIO ; Takeo GOTO ; Katsumi TANAKA ; Fumio SAITO
Journal of the Japanese Association of Rural Medicine 1997;46(2):148-153
This study investigated whether significant coronary artery stenosis in 231 consecutive unstable angina patients can be diagnosed by thoroughgoing history-taking initial electorocardiography and symptom- or sign-limited treadmill exercise ECG after medication. The unstable angina patients were divided into those with accelerated angina, those with new-onset effort angina and those with angina at rest based on the findings of detailed inquiry. Initial ECG showed that the sensitivity and specificity of detecting significant coronary artery stenosis in all patients were 55.2% and 63.2%, respectively. In accelerated angina, sensitivity and specificity were 52.2% and 50.0%, respectively. In new-onset effort angina, sensitivity and specificity were 46.7% and 57.1%, respectively. In angina at rest, sensitivity and specificity were 69.0% and 68.3%, respectively. Initial ECG provided valuable diagnostic information about angina at rest. Treadmill exercise ECG offered 66.0% sensitivity and 89.2% specificity in all patients, respectively. In accelerated angina, sensitivity and specificity were 80.0% and 66.7%, respectively. In new-onset effort angina, sensitivity and specificity were 70.8% and 87.8%, respectively. In angina at rest, sensitivity and specificity were 48.3% and 91.4%, respectively. Thus, treadmill exercise electrocardiograms provided valuable diagnostic information in the case of unstable angina, especially accelerated angina and new-onset effort angina. For patients with angina at rest, this testing was very useful for excluding significant coronary artery stenosis.
In conclusion, detailed inquiry, initial ECG and symptom- or sign-limited treadmill exercise ECG after medical stabilization proved to be of great value for diagnosing unstable angina patients with significant coronary artery stenosis.
4.Usefulness of Endoscopic Transpapillary Tissue Sampling for Malignant Biliary Strictures and Predictive Factors of Diagnostic Accuracy.
Hiroki TANAKA ; Shimpei MATSUSAKI ; Youichirou BABA ; Yoshiaki ISONO ; Tomohiro SASE ; Hiroshi OKANO ; Tomonori SAITO ; Katsumi MUKAI ; Tetsuya MURATA ; Hiroki TAOKA
Clinical Endoscopy 2018;51(2):174-180
BACKGROUND/AIMS: It is sometimes difficult to distinguish between malignant and benign biliary strictures using imaging studies alone, and pathological diagnosis is necessary. The aim of this study was to determine the usefulness of endoscopic transpapillary tissue sampling and factors predictive of diagnostic accuracy. METHODS: From April 2008 to December 2014, 136 patients underwent endoscopic transpapillary tissue sampling for malignant biliary strictures. The cytological and histological findings were reported as negative, suspicious, or positive. Suspicious and positive findings were defined as pathologically positive. RESULTS: The sensitivity was 65.0% for forceps biopsy, 49.5% for brush cytology, 46.2% for bile aspiration cytology, and 21.9% for endoscopic nasobiliary drainage cytology. The combination of these procedures improved the sensitivity (72.8%). Endoscopic transpapillary tissue sampling was more sensitive for lesions of biliary origin (91.4%) than for extrabiliary lesions (66.3%). In surgical cases, the sensitivity for tumors with an infiltrative growth pattern (53.3%) was significantly lower than for a tumor with an expanding or intermediate growth pattern (87.5%). CONCLUSIONS: Combining procedures can improve diagnostic accuracy. It may be possible to predict the sensitivity of endoscopic transpapillary tissue sampling by evaluating the etiology and tumor growth pattern using preoperative imaging studies.
Bile
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Biliary Tract Neoplasms
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Biopsy
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Constriction, Pathologic*
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Diagnosis
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Drainage
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Humans
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Pancreatic Neoplasms
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Surgical Instruments