Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
50 巻, 16 号
選択された号の論文の33件中1~33を表示しています
ORIGINAL ARTICLES
  • Natsuki Ohmaru, Takaaki Nakatsu, Reishi Izumi, Keiichi Mashima, Misako ...
    2011 年50 巻16 号 p. 1621-1629
    発行日: 2011年
    公開日: 2011/08/15
    ジャーナル オープンアクセス
    Background Even high-normal albuminuria is reportedly associated with cardiovascular events.
    Objective We determined the urine albumin creatinine ratio (UACR) in spot urine samples and analyzed the UACR distribution and the prevalence of high-normal levels.
    Patients and Methods The UACR was determined using immunoturbidimetry in 332 untreated asymptomatic non-diabetic Japanese patients with hypertension and in 69 control subjects. The microalbuminuria and macroalbuminuria levels were defined as a UCAR ≥30 and <300 μg/mg·creatinine and a UCAR ≥300 μg/mg·creatinine, respectively.
    Results The distribution patterns showed a highly skewed distribution for the lower levels, and a common logarithmic transformation produced a close fit to a Gaussian distribution with median, 25th and 75th percentile values of 22.6, 13.5 and 48.2 μg/mg·creatinine, respectively. When a high-normal UACR was set at >20 to <30 μg/mg·creatinine, 19.9% (66/332) of the hypertensive patients exhibited a high-normal UACR. Microalbuminuria and macroalbuminuria were observed in 36.1% (120/336) and 2.1% (7/332) of the patients, respectively. UACR was significantly correlated with the systolic and diastolic blood pressures and the pulse pressure. A stepwise multivariate analysis revealed that these pressures as well as age were independent factors that increased UACR.
    Conclusion The UACR distribution exhibited a highly skewed pattern, with approximately 60% of untreated, non-diabetic hypertensive patients exhibiting a high-normal or larger UACR. Both hypertension and age are independent risk factors that increase the UACR. The present study indicated that a considerable percentage of patients require anti-hypertensive drugs with antiproteinuric effects at the start of treatment.
  • Hong Li, Qiang Liu, Ningfu Wang, Jian Xu
    2011 年50 巻16 号 p. 1631-1642
    発行日: 2011年
    公開日: 2011/08/15
    ジャーナル オープンアクセス
    Objective Involvement of different NADPH oxidase (NOX) homologues in late endothelial progenitor cell (EPC) senescence induced by angiotensin II (Ang II) remains rarely studied systemically. The goal of our study was to determine NOX homologues which are correlated with late EPCs senescence induced by Ang II. The inhibitory effect of telmisartan was also studied.
    Methods and Materials Late EPCs were obtained from mononuclear cells isolated from peripheral venous blood. Stimulated by Ang II with telmisartan (Tel) or VAS2870 pretreatment or siRNA prior silencing, NOX was detected by RT-PCR and Western blot. Cell senescence was measured by the acidic β-galactosidase activity assay and cell cycle analysis. Intracellular reactive oxygen species (ROS) were analyzed by flow cytometer based on DCFH-DA.
    Results A bi-phasic change existed in NOX level after Ang II stimulation. Translocated NOX5 was correlated with early and rapid ROS production, but it contributed little to EPCs senescence. NOX2 and NOX4 were correlated with the late and slow phase and contributed greatly to EPCs senescence. There were no significant changes in NOX1 or NOX3. Telmisartan effectively depressed NOX change and delayed late EPCs senescence.
    Conclusion Ang II accelerates late EPCs senescence mainly via increased ROS originating from NOX2 and NOX4 up-regulation or translocated NOX5. Telmisartan effectively inhibited that cascade reaction and delayed EPCs senescence.
  • Miwa Ryo, Tadashi Nakamura, Tohru Funahashi, Midori Noguchi, Ken Kishi ...
    2011 年50 巻16 号 p. 1643-1648
    発行日: 2011年
    公開日: 2011/08/15
    ジャーナル オープンアクセス
    Objective The aim of this study was to evaluate the effects of health checkup and the health education "Hokenshido" program based on the concept that visceral fat accumulation causes metabolic syndrome (MetS), leading to cardiovascular disease (CVD).
    Methods and Subjects Based on the Japanese definition of metabolic syndrome, in the annual health checkup for general subjects, the measurement of waist circumference and use of "Where am I?" chart on the way to develop atherosclerosis were introduced. The study group comprised 3,174 Japanese employees [2,440 males (46±11 years, mean ± SD), 734 females (43±10 years)], who underwent annual health checkup in 2003, 2004, and 2005. The medical staff provided "Hokenshido" for subjects assessed as having MetS and/or at high risk for CVD.
    Results The prevalence of the MetS in 2003, 2004 and 2005 decreased in males (20.8%, 17.2%, 14.4%, p<0.001) and females (3.0%, 2.2%, 1.9%, p=0.359), respectively. Among subjects with MetS at baseline, the number of subjects with MetS significantly decreased in males (508, 287, 247, p<0.0001) and females (22, 8, 6, p<0.0001), respectively. Mean waist loss was 1.6 cm in males (<0.0001) and 1.5 cm in females (<0.001). Among subjects with metabolic syndrome at baseline, the mean waist loss was 2.5 cm in males (<0.0001) and 3.9 cm in females (<0.05). Fatal atherosclerotic vascular events were not recorded in this study period.
    Conclusion Health check-up and the "Hokenshido" program reduced the prevalence of the MetS, which might lead to prevention of CVD.
  • Takanori Arimoto, Tetsu Watanabe, Joji Nitobe, Tadateru Iwayama, Daisu ...
    2011 年50 巻16 号 p. 1649-1655
    発行日: 2011年
    公開日: 2011/08/15
    ジャーナル オープンアクセス
    Background The aim of this study was to compare the long-term procedural outcomes, the stability of atrioventricular conduction, and the new onset of atrial fibrillation (AF), after ablation of atrioventricular nodal reentrant tachycardia (AVNRT).
    Methods and Results Consecutive patients with AVNRT (n=109), who underwent slow-pathway ablation, were divided into two groups based on the median age of the studied patients: the younger group aged <55 years and the older group aged ≥55 years. During a mean follow-up period of 60.6 months, the rate of change in the PR interval from before ablation to follow-up was significantly greater in older patients compared with younger patients. However, there was no delayed-onset high-degree AV block during follow-up in either group. No patients in the younger group suffered from persistent AF, whereas persistent AF occurred in 5/54 (9.3%) older patients. Multivariate Cox analysis revealed that atrial vulnerability, with induction of AF during the electrophysiological study, was the only predictor of the development of AF (Hazard ratio: 13.9, 95% confidence interval: 1.62-119.2, p<0.01).
    Conclusion Slow-pathway ablation of AVNRT is a reliable strategy even in older patients. However, physicians should consider regular long-term follow-up of older patients with atrial vulnerability, in order to assess the subsequent development of AF.
  • Masafumi Koga, Hiroshi Saito, Mikio Mukai, Toshiji Saibara, Soji Kasay ...
    2011 年50 巻16 号 p. 1657-1661
    発行日: 2011年
    公開日: 2011/08/15
    ジャーナル オープンアクセス
    Backgound Dehydroepiandrosterone (DHEA) is an adrenal hormone reported to prevent body weight gain, diabetes mellitus and atherosclerosis. We hypothesized that DHEA is involved in the pathophysiology of non-alcoholic fatty liver disease (NAFLD) often associated with obesity and insulin resistance. In this study, we aimed to examine the clinical significance of serum DHEA sulfate (DHEAS) in patients with NAFLD.
    Methods We determined serum DHEAS, serum alanine aminotransferase (ALT), serum lipids, plasma fasting glucose and insulin levels in 158 Japanese men who had neither viral hepatic diseases nor alcohol intake exceeding 20 g/day. NAFLD was diagnosed by the presence of fatty change of the liver by echotomographic examination.
    Results Among the study subjects, 69 were diagnosed as having NAFLD. Their serum DHEAS levels were significantly higher than in 89 subjects without NAFLD. Serum DHEAS levels in 19 NAFLD patients with elevated ALT levels (>40 U/L) were significantly higher than in the other 50 NAFLD patients with normal ALT levels (≤40 U/L). Multivariate regression analysis demonstrated that serum ALT was positively correlated with serum DHEAS, serum triglyceride and body mass index.
    Conclusion Serum DHEAS levels are increased in patients with NAFLD with elevated ALT levels. Increased serum DHEAS may be a component of the pathophysiology of NAFLD.
  • Huiping Li, Ying Zhou, Feng Fan, Yuan Zhang, Xia Li, Hui Yu, Lan Zhao, ...
    2011 年50 巻16 号 p. 1663-1669
    発行日: 2011年
    公開日: 2011/08/15
    ジャーナル オープンアクセス
    Background Patients with diffuse panbronchiolitis (DPB) are routinely treated with erythromycin, clarithromycin, and roxithromycin. The clinical effect of azithromycin on DPB has not been confirmed in a large cohort.
    Objective The present study was undertaken to investigate the clinical effects of azithromycin on patients with DPB.
    Methods Fifty-one patients with DPB treated with azithromycin in Shanghai Pulmonary Hospital, China, from July 2001 to April 2007 were analyzed retrospectively. Azithromycin (500 mg a day) was administrated intravenously in the first 1-2 weeks, taken orally (500 mg, once a day) for 3 months, and tapered to 3 times a week for 6-12 months. The patients were followed up until September 1, 2009. The therapeutic effect, according to their clinical and radiological findings, arterial gas analysis, lung function, and sputum bacterium before and after the therapy, was categorized into the following five grades: 1) cured; 2) improved; 3) no response; 4) aggravation, and 5) relapse.
    Results With azithromycin therapy, 14 (27.5%) patients with DPB were completely cured. The symptoms were eliminated to certain degrees for the other 36 cases (70.6%) of DPB. Five-year survival in this cohort was 94.1%.
    Conclusion Azithromycin is effective and well tolerated for patients with diffuse panbronchiolitis.
  • Yoshimi Takahashi, Chifumi Iseki, Manabu Wada, Tadasuke Momma, Masao U ...
    2011 年50 巻16 号 p. 1671-1678
    発行日: 2011年
    公開日: 2011/08/15
    ジャーナル オープンアクセス
    Objective Age is known to influence the risk of both cerebral ischemic lesions and impaired cognitive function. Diabetes mellitus (DM) can also be associated with cognitive impairment. However, there has been no study of neuropsychological performance in association with glucose metabolism status and cerebral ischemic lesions in same-aged, community-dwelling elderly persons. The present study was performed to clarify which cognitive domains are associated with impaired glucose metabolism/DM and whether the association is independent of cerebral ischemic lesions.
    Subjects and Methods A total of 172 residents in Takahata, Japan, all of whom were 78 years old, were evaluated in multiple domains through neuropsychological tests and brain MR images, as well as a medical check-up including tests for glucose metabolism status and conventional vascular risk factors. Glucose metabolism status was determined by analysis of HbA1c level.
    Results In multiple regression analyses, performance on a verbal fluency (VF) test and the Trail Making Test-Part B, both of which represent executive function, was associated with HbA1c level, even after adjustment for sex, education, cerebral ischemic lesions, and conventional vascular risk factors. The subjects with DM also showed lower VF scores than did those without DM.
    Conclusion The results of the present study demonstrate that impaired glucose metabolism, independent of the conventional vascular risk factors and cerebral ischemic lesions, may be associated with a decline in executive function in community-dwelling elderly.
  • Noboru Imai, Ryou Kuroda, Takashi Konishi, Masahiro Serizawa, Masahiro ...
    2011 年50 巻16 号 p. 1679-1682
    発行日: 2011年
    公開日: 2011/08/15
    ジャーナル オープンアクセス
    Objective The first symptom of giant cell arteritis (GCA) is usually a headache. Japan has a low prevalence of GCA, and clinical features of this disorder have not been fully investigated. We conducted a retrospective evaluation of clinical features in patients with giant cell arteritis who visited a headache clinic in Japan.
    Methods Clinical and demographic data were obtained from clinical examinations, face-to-face interviews, and hospital records.
    Patients Subjects comprised 19 patients (9 men, 10 women).
    Results Mean age at disease onset was 78.1 ± 4.8 years (range, 71-86 years). Seventeen of 19 patients (89.5%) had consulted other medical institutions before consulting our hospital, but only 2 of those patients had been diagnosed with GCA at these medical institutions. Manifestations at disease onset included headache (89.5%), ear pain (5.3%), and jaw pain (5.3%). Ocular manifestations were reported in 2 patients (10.5%). No loss of vision occurred. One patient showed trigeminal nerve palsy involving the third division of the nerve. Jaw claudication was observed in 3 patients (15.8%). Concomitant polymyalgia rheumatica was seen in 3 patients (15.8%). No patient showed upper respiratory tract symptoms, arm claudication, or aortic aneurysms.
    Conclusion Although most patients had consulted other medical institutions before consulting our hospital, they were not diagnosed with GCA at these institutions. Infrequent clinical findings of GCA and lack of symptoms other than headache may contribute to the high rate of unrecognized and misdiagnosed cases of GCA.
  • Kenichi Kashihara, Takayoshi Shinya, Fumiyo Higaki
    2011 年50 巻16 号 p. 1683-1687
    発行日: 2011年
    公開日: 2011/08/15
    ジャーナル オープンアクセス
    Objective Diseases presenting extrapyramidal symptoms are accompanied by nigral cell loss. In the previous study, we demonstrated the reduction of the neuromelanin-positive volume of substantia nigra (SN) pars compacta (SNc) in patients with Parkinson's disease (PD) using 3-Tesla MRI. In the present study we investigated the neuromelanin-positive SNc volume in patients with the other parkinsonian disorders including multiple system atrophy (MSA), progressive supranuclear palsy (PSP) and corticobasal degeneration (CBD) and compared the results with those with PD, spinocerebellar ataxia (SCA) and controls.
    Patients and Methods Axial T1-weighted (T1W) images were obtained with a 3-Tesla MRI scanner. The border of the neuromelanin-positive region of the SNc was traced manually on these images with a pentablet pointing device and the SNc volume was calculated. The SNc volumes of 28 patients with MSA, 11 patients with PSP and 10 patients with CBD were compared with those of 80 patients with PD, 9 patients with SCA and 54 patients who had suffered mild acute ischemic stroke as controls. The mean volumes for the left and right SN were used for statistical analyses.
    Results The volumes of the neuromelanin-positive SNc region in patients with MSA, PSP and CBD, but not SCA were reduced to the same extent as PD patients compared with controls.
    Conclusion Reduced volume of the neuromelanin-positive SNc region of patients with MSA, PSP and CBD was detected by neuromelanin MR imaging. Volumetric evaluation of neuromelanin MR imaging may provide a biomarker of nigral degeneration in patients with MSA, PSP and CBD as in patients with PD.
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