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| 1.
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Sakamoto, Aiji ; Sugamoto, Yuka ; Tokunaga, Y. ; Yoshimuta, Tsuyoshi ; Hayashi, Kenshi ; Konno, Tetsuo ; Kawashiri, Masa-aki ; Takeda, Yoshiyu ; Yamagishi, Masakazu ; 林, 研至 ; 今野, 哲雄 ; 川尻, 剛照 ; 武田, 仁勇 ; 山岸, 正和
概要:
金沢大学医薬保健研究域医学系<br />Ephrin B1 and its cognate receptor, Eph receptor B2, key regulators of embryogenesis, are expressed
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in human atherosclerotic plaque and inhibit adult human monocyte chemotaxis. Few data exist, however, regarding the gene expression profiles of the ephrin (EFN) and Eph receptor (EPH) family of genes in atherosclerosis-related human cells. Gene expression profiles were determined of all 21 members of this gene family in atherosclerosis-related cells by reverse transcription-polymerase chain reaction analysis. The following 17 members were detected in adult human peripheral blood monocytes: EFNA1 and EFNA3 - EFNA5 (coding for ephrins A1 and A3 - A5); EPHA1, EPHA2, EPHA4 - EPHA6 and EPHA8 (coding for Eph receptors A1, A2, A4 - A6 and A8); EFNB1 and EFNB2 (coding for ephrins B1 and B2); and EPHB1 - EPHB4 and EPHB6 (coding for Eph receptors B1 - B4 and B6). THP-1 monocytic cells, Jurkat T cells and adult arterial endothelial cells also expressed multiple EFN and EPH genes. These results indicate that a wide variety of ephrins and Eph receptors might affect monocyte chemotaxis, contributing to the development of atherosclerosis. Their pathological significance requires further study. © 2011 Field House Publishing LLP.
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| 2.
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Tada, Hayato ; Kawashiri, Masa-aki ; Konno, Tetsuo ; Yamagishi, Masakazu ; Hayashi, Kenshi ; 多田, 隼人 ; 川尻, 剛照 ; 今野, 哲雄 ; 山岸, 正和 ; 林, 研至
概要:
金沢大学医薬保健研究域医学系<br />Blood lipid levels are highly heritable and modifiable risk factors for coronary artery disease (CAD
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), and are the leading cause of death worldwide. These facts have motivated human genetic association studies that have the substantial potential to define the risk factors that are causal and to identify pathways and therapeutic targets for lipids and CAD. The success of the HapMap project that provided an extensive catalog of human genetic variations and the development of microarray based genotyping chips (typically containing variations with allele frequencies ＞5%) facilitated common variant association study (CVAS; formerly termed genomewide association study, GWAS) identifying disease-associated variants in a genome-wide manner. To date, 157 loci associated with blood lipids and 46 loci with CAD have been successfully identified, accounting for approximately 12%– 14% of heritability for lipids and 10% of heritability for CAD. However, there is yet a major challenge termed “missing heritability problem,” namely the observation that loci detected by CVAS explain only a small fraction of the inferred genetic variations. To explain such missing portions, focuses in genetic association studies have shifted from common to rare variants. However, it is challenging to apply rare variant association study (RVAS) in an unbiased manner because such variants typically lack the sufficient number to be identified statistically. In this review, we provide a current understanding of the genetic architecture mostly derived from CVAS, and several updates on the progress and limitations of RVAS for lipids and CAD. © 2016, Japan Atherosclerosis Society. All rights reserved.<br />出版者照会後に全文公開
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| 3.
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Uchiyama, K. ; Ino, H. ; Hayashi, Kenshi ; Fujioka, K. ; Takabatake, S. ; Yokawa, J. ; Namura, M. ; Mizuno S. ; Tatami, R. ; Kanaya, H. ; Nitta, Y. ; Michishita, I. ; Hirase, H. ; Ueda, K. ; Aoyama, T. ; Okeie, K. ; Haraki, T. ; Mori, K. ; Araki, T. ; Minamoto, M. ; Oiwake, H. ; Konno, Tetsuo ; Sakata, Kenji ; Kawashiri, Masa-aki ; Yamagishi, Masakazu ; 林, 研至 ; 山岸, 正和
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金沢大学医薬保健研究域医学系<br />Percutaneous coronary intervention (PCI) using a drug-eluting stent (DES) leads to less re-stenosis
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than PCI using a bare metal stent (BMS), however there is still controversy whether use of a DES for severe coronary disease leads to an acceptable outcome in patients with diabetes mellitus (DM). In this study 8159 lesions were treated in 6739 patients (mean age 68.9 years) with coronary artery disease. Use of a DES significantly decreased the re-stenosis rate compared with BMS in both DM (9.6% versus 21.3%) and non-DM (9.5% versus 17.1%) patients. The re-stenosis rate was significantly higher in DM than in non-DM patients in the BMS group but not in the DES group. There was no statistically significant difference in event-free survival after stenting of patients with left main coronary artery (LMCA) disease between the BMS and DES groups. It was concluded that, compared with BMS, DES reduced re-stenosis in patients with DM, however, we advise careful treatment after using DES for severe coronary disease, including LMCA lesions, in patients with DM. © 2011 Field House Publishing LLP.
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| 4.
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Oka, Rie ; Yamada, Takayoshi ; Nakanishi, Chiaki ; Konno, Tetsuo ; Kawashiri, Masa-aki ; Hayashi, Kenshi ; Nohara, Atsushi ; Inazu, Akihiro ; Yamagishi, Masakazu ; 大家, 理恵 ; 八木, 邦公 ; 今野, 哲雄 ; 川尻, 剛照 ; 林, 研至 ; 野原, 淳 ; 稲津, 明広 ; 山岸, 正和
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金沢大学医薬保健研究域医学系<br />Aim: The commonly observed relationship between increased visceral adiposity and metabolic abnormali
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ties may be partly mediated by a concomitant increase in liver fat content. We evaluated the independent association between the level of alanine aminotransferase (ALT) as a surrogate marker of the liver fat content and the incidence of metabolic abnormalities after adjusting for the amount of visceral adipose tissue (AT). Methods: The subjects included 1,118 Japanese individuals (44% women) who underwent computed tomography to assess the amount of visceral AT on medical checkups. Cross-sectional associations between the serum ALT, visceral AT and metabolic risk factors were examined. Results: The ALT level and visceral AT were found to show a significant correlation (r =0.41 in men and r =0.36 in women, p<0.001). In a multivariable linear regression analysis, the ALT level and visceral AT were found to be independently associated with blood pressure in men and triglycerides and 2-hour post-challenge glucose in both genders (p<0.01), whereas only visceral AT was found to be associated with HDL-cholesterol (p<0.01). When the participants were classified into four subgroups based on the 75th percentiles of ALT and visceral AT, the low-ALT/high-visceral AT group, but not the high-ALT/low-visceral AT group, had a significantly higher odds ratio for low HDL-cholesterol among both genders (p<0.05) and for hypertriglyceridemia in men only (p<0.05). Meanwhile, the high-ALT/low-visceral AT group, but not the low-ALT/high-visceral AT group, had a significantly higher odds ratio for IGT among women (p<0.05). Conclusions: Although the ALT level and visceral AT were found to be independently associated with most metabolic risk factors, visceral AT had a dominant association with dyslipidemia in both genders, while the ALT level appeared to have a closer association with IGT in women.<br />出版者照会後に全文公開
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| 5.
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Nomura, Akihiro ; Konno, Tetsuo ; Fujita, Takashi ; Tanaka, Yoshihiro ; Nagata, Yoji ; Tsuda, Toyonobu ; Hodatsu, Akihiko ; Sakata, Kenji ; Nakamura, Hiroyuki ; Kawashiri, Masa-aki ; Fujino, Noboru ; Yamagishi, Masakazu ; Hayashi, Kenshi ; 今野, 哲雄 ; 坂田, 憲治 ; 川尻, 剛照 ; 藤野, 陽 ; 山岸, 正和 ; 林, 研至
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金沢大学医薬保健研究域医学系<br />Background: Although fragmented QRS complex (frag-QRS) reflecting intra-ventricular conduction delay
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has been shown to be a prognostic marker for cardiac events, few data exist regarding the impact of frag-QRS on cardiac events in hypertrophic cardiomyopathy (HCM).Methods and Results: Ninety-four HCM patients (56 male; mean age, 58}17 years) were retrospectively investigated. Frag-QRS was defined as the presence of various RsR’ patterns in at least 2 contiguous ECG leads. Major arrhythmic events (MAE) were defined as sudden cardiac death, and combined sustained ventricular tachycardia/ventricular fibrillation. New-onset atrial fibrillation (AF) was diagnosed based on ECG during provisional or routine medical examination. Heart failure (HF) with hospitalization was defined as hospital admission due to subjective or objective symptoms. Frag-QRS was detected in 31 patients (33%). TNNI3 was the most frequent disease-causing gene. Median follow-up was 4.6 years. The 4-year cumulative survival rates of cardiac death, MAE, new-onset AF and HF with hospitalization were 97.6%, 94.6%, 87.5% and 89.3%, respectively. On multivariate analysis, frag-QRS was significantly associated with HF with hospitalization (adjusted hazard ratios [95% confidence intervals]: 5.4 [1.2–36], P=0.03). Moreover, HF-free survival was significantly lower in the frag-QRS (+) group compared to the frag-QRS (–) group (79.0% vs. 95.1%, P=0.03).Conclusions: Frag-QRS is associated with HF with hospitalization in HCM patients who had a unique distribution of gene mutations. © 2014, The Japanese Circulation Society<br />出版者照会後に全文公開
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| 6.
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Nakanishi, Chiaki ; Nagaya, Noritoshi ; Ohnishi, Shunsuke ; Yamahara, Kenichi ; Takabatake, Shu ; Konno, Tetsuo ; Hayashi, Kenshi ; Kawashiri, Masa-aki ; Tsubokawa, Toshinari ; Yamagishi, Masakazu ; 中西, 千明 ; 今野, 哲雄 ; 林, 研至 ; 川尻, 剛照 ; 山岸, 正和
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金沢大学医薬保健研究域医学系<br />Background: Mesenchymal stem cells (MSC) are multipotent and reside in bone marrow (BM), adipose tis
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sue and many other tissues. However, the molecular foundations underlying the differences in proliferation, differentiation potential and paracrine effects between adipose tissue-derived MSC (ASC) and BM-derived MSC (BM-MSC) are not well-known. Therefore, we investigated differences in the gene and secretory protein expressions of the 2 types of MSC. Methods and Results: ASC and BM-MSC were obtained from subcutaneous adipose tissue and BM of adult Lewis rats. ASC proliferated as rapidly as BM-MSC, and had expanded 200-fold in approximately 2 weeks. On microarray analysis of 31,099 genes, 571 (1.8%) were more highly (>3-fold) expressed in ASC, and a number of these genes were associated with mitosis and immune response. On the other hand, 571 genes (1.8%) were more highly expressed in BM-MSC, and some of these genes were associated with organ development and morphogenesis. In secretory protein analysis, ASC secreted significantly larger amounts of growth factor and inflammatory cytokines, such as vascular endothelial growth factor, hepatocyte growth factor and interleukin 6, whereas BM-MSC secreted significantly larger amounts of stromal-derived factor-1α. Conclusions: There are significant differences between ASC and BM-MSC in the cytokine secretome, which may provide clues to the molecule mechanisms associated with tissue regeneration and alternative cell sources.<br />出版者照会後に全文公開
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| 7.
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Funada, Akira ; Konno, Tetsuo ; Fujino, Noboru ; Muramoto, Akihiko ; Hayashi, Kenshi ; Tsubokawa, Toshinari ; Sakata, Kenji ; Kawashiri, Masa-aki ; Takeda, Yoshiyu ; Ino, Hidekazu ; Yamagishi, Masakazu ; 舟田, 晃 ; 今野, 哲雄 ; 藤野, 陽 ; 林, 研至 ; 坂田, 憲治 ; 川尻, 剛照 ; 武田, 仁勇 ; 井野, 秀一 ; 山岸, 正和
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金沢大学医薬保健研究域医学系<br />Background: Although the renin - angiotensin system (RAS) can affect the development of left ventric
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ular (LV) hypertrophy, few data exist regarding the relationships between RAS polymorphisms and alteration of LV function. The effect of RAS polymorphisms on LV function in genotyped hypertrophic cardiomyopathy (HCM) was examined in the present study. Methods and Results: The study group comprised 126 carriers with sarcomere gene mutations from 49 HCM families (64 males, mean age 51±21 years). LV morphology and function were evaluated by echocardiography. In angiotensin-converting enzyme (ACE) insertion/deletion (I/D), the D allele (n=81) exhibited significantly larger LV end-systolic dimension (LVDs) (32±11 mm) and lower ejection fraction (56±15%) than those with the II genotype (28±7 mm and 62±12%, respectively, P<0.05; n=45). Although angiotensin II type 1 receptor (AT1-R) A/C1166 polymorphism did not affect echocardiographic parameters, the presence of the ACE D allele with the AT1-R C1166 allele (n=9) was associated with larger LVDs (37±17 mm) and lower ejection fraction (48±20%) compared with other genotypes (30±9 mm and 58±14%, respectively, P<0.05; n=117). Under these conditions, severe LV hypertrophy was frequently associated with LV wall thinning. Conclusions: The presence of both the ACE D and AT1-R C1166 allele is associated with LV dilation with systolic dysfunction in genotyped HCM. In addition to the severity of LV hypertrophy, screening for these RAS polymorphisms could contribute to further risk stratification of patients with HCM, although other genetic polymorphisms should be further examined.<br />出版者照会後に全文公開
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| 8.
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Konno, Tetsuo ; Hayashi, Kenshi ; Fujino, Noboru ; Nagata, Yoji ; Hodatsu, Akihiko ; Masuta, Eiichi ; Sakata, Kenji ; Nakamura, Hiroyuki ; Kawashiri, Masa-aki ; Yamagishi, Masakazu ; 今野, 哲雄 ; 林, 研至 ; 藤野, 陽 ; 永田, 庸二 ; 寳達, 明彦 ; 坂田, 憲治 ; 中村, 裕之 ; 川尻, 剛照 ; 山岸, 正和
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金沢大学医薬保健研究域医学系<br />Background: Myocardial scarring can be assessed by cardiac magnetic resonance imaging with late gado
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linium enhancement and by endomyocardial biopsy. However, accuracy of late gadolinium enhancement for predicting microscopic myocardial scarring in biopsied specimens remains unknown in hypertrophic cardiomyopathy. We investigated whether late gadolinium enhancement in the whole heart reflects microscopic myocardial scarring in the small biopsied specimens in hypertrophic cardiomyopathy. Methods and Results: Twenty-one consecutive patients with hypertrophic cardiomyopathy who were examined both by cardiac magnetic resonance imaging and by endomyocardial biopsy were retrospectively studied. The right interventricular septum was the target site for endomyocardial biopsy in all patients. Late gadolinium enhancement in the ventricular septum had an excellent sensitivity (100%) with a low specificity (40%) for predicting microscopic myocardial scarring in biopsied specimens. The sensitivity of late gadolinium enhancement in the whole heart remained 100% with a specificity of 27% for predicting microscopic myocardial scarring in biopsied specimens. Quantitative assessments of fibrosis revealed that the extent of late gadolinium enhancement in the whole heart was the only independent variable related to the microscopic collagen fraction in biopsied specimens (β = 0.59, 95% confident interval: 0.15-1.0, p = 0.012). Conclusions: Although there was a compromise in the specificity, the sensitivity of late gadolinium enhancement was excellent for prediction of microscopic myocardial scarring in hypertrophic cardiomyopathy. Moreover, the severity of late gadolinium enhancement was independently associated with the quantitative collagen fraction in biopsied specimens in hypertrophic cardiomyopathy. These findings indicate that late gadolinium enhancement can reflect both the presence and the extent of microscopic myocardial scarring in the small biopsied specimens in hypertrophic cardiomyopathy. © 2014 Konno et al.
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| 9.
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Konno, Tetsuo ; 今野, 哲雄
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取得学位 : 博士（医学）, 学位授与番号 : 医博甲第1595号, 学位授与年月日 : 平成15年6月30日, 学位授与大学 : 金沢大学
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Shimizu, Masami ; Ino, Hidekazu ; Yasuda, Toshihiko ; Fujino, Noboru ; Uchiyama, Katsuharu ; Mabuchi, Tomohito ; Konno, Tetsuo ; Kaneda, Tomoya ; Fujita, Takashi ; Masuta, Eiichi ; Kato, Masahiro ; Funada, Akira ; Mabuchi, Hiroshi
概要:
金沢大学大学院医学系研究科 <br />Background: Some patients with dilated cardiomyopathy (DCM) have mutations of the genes that encode
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sarcomeric or cytoskeletal proteins of cardiomyocytes, but the prevalence of these mutations in Japan remains unclear. Methods and Results: A group of 99 unrelated adult patients with DCM (familial n=27, sporadic n=72) were screened for the following genes: cardiac ﾎｲ-myosin heavy chain, cardiac myosin-binding protein C (MYBPC3), regulatory and essential myosin light chains, a cardiac actin, ﾎｱ tropomyosin, cardiac troponin T, cardiac troponin I, cardiac troponin C, dystrophin, and lamin A/C. A mutation (R820Q) in MYBPC3 was found in an aged patient. In addition, dystrophin mutations were identified in 3 male patients (2 with exon 45-48 deletion and 1 with exon 48-52 deletion). The prevalence of dystrophin mutations in male patients with DCM was 4.4% (3 of 68). No mutations involving amino acid changes were identified in the other genes. Conclusions: Although cases of adult patients with DCM caused by mutations of the genes encoding sarcomeric or cytoskeletal proteins of cardiomyocytes are infrequent in Japan, it may be advisable to screen older DCM patients for MYBPC3 mutations, and male patients with familial DCM for dystrophin mutations.
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