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排序方式: 共有64条查询结果,搜索用时 46 毫秒
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IMURA U 《Kekkaku : [Tuberculosis]》1954,29(8):291-4; English abstract, 323-4
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Magnetic resonance imaging study of the brain in aged volunteers: T2 high intensity lesions and higher order cortical function 总被引:1,自引:0,他引:1
HIROO KASAHARA md HIDEO YAMADA md MUNEHIKO TANNO md MITSURU KOBAYASHI AKIHIDE KARASAWA md KAZUO ENDO SADANOBU USHIJIMA md 《Psychiatry and clinical neurosciences》1995,49(5-6):273-279
Abstract The aims of the present study were to clarify the findings of magnetic resonance imaging (MRI) in the aging brain, and to relate the MRI findings to higher order cortical function. A total of 118 healthy aged volunteers (41 men, 77 women) underwent cranial MRI electroencephalography (EEG), Benton visual retention test (BVRT) and interview. The subjects had no past history or clinical evidence of cerebrovascular disorder, head trauma or dementia and were living at home without any difficulty. The majority of the subjects have participated in this series of studies since 1982. Using a 1.5 T superconductive MR instrument, T1-weighted, proton density and T2-weighted images were obtained. The MRI data were rated visually by regarding 12 items according to fixed criteria. T2 high signal intensity (T2HSI) lesions were found in 69.5% of subjects, the prevalence of which increased with age. T2HSI lesions were most frequently found in the basal ganglia (61.9%), followed by the thalamus (39.0%), parietal lobe (37.0%), temporal lobe (12.7%) and pons (8.5%). Among these lesions, lacunar infarction showed low signal intensity in T1-weighted images and was found in 24.6% of subjects, the prevalence also increasing with age. These findings, including brain atrophy determined according to similar criteria, were correlated closely with the subjects' age. The results of BVRT showed a close relation with T2HSI, suggesting that T2HSI may influence cognitive function. When the subjects were classified according to the presence of T2HSI, lacunar infarction and EEG abnormalities, brain atrophy was significantly milder in a group of subjects with T2HSI(-), lacunar infarction(-) and normal EEG than in the other groups. This suggests that changes seemingly representing physiological aging may be promoted by another pathological which also exerts influences on higher order cerebral function. 相似文献
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NAKAMURA MASUHISA; TANAKA AKIRA; KAWABATA TOMOJI; YAMAMOTO HIRONOSUKE; IMURA HIROO 《Japanese journal of clinical oncology》1975,5(1):29-31
On isolation of the main melanocyte-stimulating factor fromthe metastatic liver tumor of islet cell carcinoma of the pancreas,it was found to be a peptide resembling human ß-MSHin the time-lapse skin darkening response of Xenopus frogs,but different in the volume of elution on Sephadex gel chromatography. 相似文献
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The purpose of this prospective study was to assess the incidence of flare-ups (a severe problem requiring an unscheduled visit and treatment) among patients who received endodontic treatment by the two authors in their respective practices during a period of one year, and also to examine the correlation with pre-operative and operative variables. The results showed an incidence of 1.58% for flare-ups from 1012 endodontically treated teeth. Statistical analysis using the chisquare test (P<0.05) indicated that flare-ups were found to be positively correlated with multiple appointments, retreatment cases, periradicular pain prior to treatment, presence of radiolucent lesions, and patients taking analgesic or anti-inflammatory drugs. In contrast, there was no correlation between flare-up, and age, sex, different arch/tooth groups and the status of the pulp. 相似文献
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HIROKAZU TSUKAHARA TOSHIO IMURA SHINYA TSUCHIDA MITSUKO NUNOSE CHIKAHIDE HORI MASAHIRO HIRAOKA FUMITAKE GEJYO MASAKATSU SUDO 《Pediatrics international》1996,38(6):614-618
The purpose of the present study was to examine renal functional changes caused by chronic blockade of nitric oxide (NO) synthesis in young rats. Two types of NO synthase inhibitor were used: NG-nitro-L-arginine methyl ester (L-NAME) as a non-selective inhibitor and aminoguanidine (AG) as a selective inhibitor of the inducible isoform. Oral administration of L-NAME (20–80 mg/dL of drinking water), not AG (400 mg/dL), for 4 weeks induced systemic hypertension in the treated rats. Both inhibitors caused a significant reduction in urinary excretion of NO2?/NO3?. Rats treated with L-NAME developed proteinuria and tubular enzymuria (high excretion of N-acetyl-β-D-glucosaminidase) in a dose-dependent fashion, with normal serum levels of creatinine, albumin and cholesterol. Chronic AG administration did not alter the urinary levels of protein and N-acetyl-β-D-glucosaminidase or serum laboratory values. Overall, these observations highlight the importance of the continuous generation of NO by the constitutive isoform in the control of vascular tone and the maintenance of renal glomerular and tubular function. Oral administration of L-NAME may serve as a model of chronic NO-deficient hypertension with renal injury in young rats. 相似文献
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MASAKO KAWAKAMI YASUHIKO IGAWA HIROO INOUE KOUJI KOIZUMI OSAMU NISHIZAWA 《International journal of urology》2004,11(10):919-921
Abstract We experienced a rare case of the rupture of the urachal diverticulum in radiation cystitis and neurogenic bladder after radical hysterectomy. A 61‐year‐old woman presented with severe lower abdominal pain and urinary retention. Abdominal computed tomography revealed that the urachal remnant contained a large volume of urine that leaked to subcutaneous tissue. We excised the urachal diverticulum and bladder together and created a continent urinary diversion using transverse colon. Nine months after the operation, the patient could manage clean intermittent self‐catheterization 6 times a day through her umbilical stoma without any urinary complications. 相似文献
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F. OSEKO K. MORIKAWA A. NAKANO S. NOTE J. ENDO A. TANIGUCHI T. KONO and H. IMURA 《Andrologia》1986,18(5):523-528
In order to elucidate the relationship between plasma dehydroepiandrosterone (DHA) and sulpiride-induced hyperprolactinemia (of 60 day duration) in normal men, five normal men (aged 27-46) were administered daily 300 mg of sulpiride orally for 60 days to induce hyperprolactinemia. Plasma levels of prolactin, DHA and cortisol were measured by radioimmunoassay before sulpiride treatment, at day 14 and day 60 after initiation of the treatment. Plasma levels of prolactin after the administration rose significantly (P less than 0.001) to 71.6-95.3 ng/ml in four out of the five subjects compared with those of the controls. In the same four subjects the mean DHA values in plasma were elevated significantly (P less than 0.05) to 877 +/- 160 ng/dl from the mean baseline values (669 +/- 91 ng/dl). The elevated values remained during sulpiride treatment. Plasma levels of cortisol did not change significantly during sulpiride administration in all subjects. Our results suggest that sulpiride-induced hyperprolactinemia sustained at least 14-60 days in normal men stimulates the adrenal cortex to secrete DHA. 相似文献