International journal of cardiology. Heart & vessels最新文献

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Study of vitamin D deficiency prevalence in acute myocardial infarction 急性心肌梗死患者维生素D缺乏的研究
International journal of cardiology. Heart & vessels Pub Date : 2014-06-01 DOI: 10.1016/j.ijchv.2014.03.004
Satish Karur, Virupakshappa Veerappa, Manjunath C. Nanjappa
{"title":"Study of vitamin D deficiency prevalence in acute myocardial infarction","authors":"Satish Karur,&nbsp;Virupakshappa Veerappa,&nbsp;Manjunath C. Nanjappa","doi":"10.1016/j.ijchv.2014.03.004","DOIUrl":"10.1016/j.ijchv.2014.03.004","url":null,"abstract":"<div><h3>Background</h3><p>Deficiency of 25-hydroxy vitamin D [25(OH)D] is a treatable <em>condition</em> that has been associated with coronary artery disease and many of its risk factors. A practical time to assess for 25(OH)D deficiency, and to initiate treatment, is at the time of an acute myocardial infarction(AMI). The prevalence of 25(OH)D deficiency and the characteristics associated with it in patients with acute myocardial infarction are unknown.</p></div><div><h3>Methods</h3><p>In this study 25(OH)D was assessed in 314 subjects enrolled in a Sri Jayadeva Institute of Cardiovascular Science and Research(SJICS&amp;R). Patients enrolled from December 1, 2011 to February 28, 2012 had serum samples sent to a centralized laboratory for analysis using the ELECYS assay. Normal 25(OH)D levels are ≥ 30 ng/ml, and patients with levels &lt; 30 and &gt; 20 ng/ml were classified as insufficient and those with levels ≤ 20 ng/ml as deficient. Vitamin D and other baseline characteristics were analyzed with T-test and chi-squared test.</p></div><div><h3>Results</h3><p>Of the 314 enrolled patents, 212 (67.5%) were 25(OH)D deficient and 50(16%) were insufficient, for a total of 83.5% of patients with abnormally low 25(OH)D levels. No significant heterogeneity was observed among age or gender sub groups but 25(OH)D deficiency was more commonly seen in those with lower socioeconomic status, lower activity levels, diabetes, hypercholesterolemia(LDL), hypertriglyceridemia and in smokers.</p></div><div><h3>Conclusion</h3><p>Vitamin D deficiency is present in most of the patients with acute myocardial infarction and it is associated with many of its risk factors in our study.</p></div>","PeriodicalId":90542,"journal":{"name":"International journal of cardiology. Heart & vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijchv.2014.03.004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35836854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 30
Difference of vascular response between everolimus- and paclitaxel-eluting stents for small coronary artery disease: Optical coherence tomography analysis 依维莫司和紫杉醇洗脱支架治疗小冠状动脉疾病血管反应的差异:光学相干断层扫描分析
International journal of cardiology. Heart & vessels Pub Date : 2014-06-01 DOI: 10.1016/j.ijchv.2014.01.001
Kenya Nasu , Yuji Oikawa , Tadanori Aizawa , Takahiko Suzuki , on behalf of SACRA and PLUM registries investigators
{"title":"Difference of vascular response between everolimus- and paclitaxel-eluting stents for small coronary artery disease: Optical coherence tomography analysis","authors":"Kenya Nasu ,&nbsp;Yuji Oikawa ,&nbsp;Tadanori Aizawa ,&nbsp;Takahiko Suzuki ,&nbsp;on behalf of SACRA and PLUM registries investigators","doi":"10.1016/j.ijchv.2014.01.001","DOIUrl":"10.1016/j.ijchv.2014.01.001","url":null,"abstract":"<div><h3>Background</h3><p>Previous clinical trials have demonstrated the clinical and angiographic superiority of everolimus-eluting stents (EES) compared with paclitaxel-eluting stents (PES) in the small coronary vessel. However, the differences of vascular response including assessment of morphological neointimal tissue (NIT) characteristics using optical coherence tomography (OCT) have not been fully evaluated. The aim of this study is to evaluate the differences of chronic vascular response following small coronary stenting between EES and PES using OCT.</p></div><div><h3>Methods and results</h3><p>A prospective OCT examination at 9 month follow-up was performed for 50 small coronary artery diseases (50 patients) treated by a single 2.5 mm stent for each stent group. Cross-sectional area within stent segments were analyzed at an interval of 1 mm. NIT structure (homogeneous or heterogeneous) was evaluated for qualitative assessment. Homogeneous NIT was observed significantly higher and heterogeneous NIT was lower in EES compared with PES (93% vs. 89%; p = 0.003, 6.5% vs. 10.3%; p = 0.002, respectively). The frequencies of exposed and malapposed struts were lower in EES compared with PES (0.2% vs. 1.7%; p = 0.0001, 0.1% vs. 0.3%; p = 0.001, respectively). NIT eccentricity index and NIT area were lower in EES compared with PES (0.69 ± 0.08 vs. 0.76 ± 0.10; p = 0.001, 0.97 ± 0.42 mm<sup>2</sup> vs. 1.27 ± 0.67 mm<sup>2</sup>; p = 0.01, respectively).</p></div><div><h3>Conclusions</h3><p>A favorable vascular response was observed after EES implantation compared with PES for small coronary artery disease. In addition, the characteristics of NIT after EES implantation were more stable than PES at 9 month follow-up.</p></div>","PeriodicalId":90542,"journal":{"name":"International journal of cardiology. Heart & vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijchv.2014.01.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35837934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Progress of right ventricular dilatation in adults with repaired tetralogy of Fallot and free pulmonary regurgitation 成人法洛四联症和游离肺反流修复后右心室扩张的进展
International journal of cardiology. Heart & vessels Pub Date : 2014-06-01 DOI: 10.1016/j.ijchv.2014.02.003
Shamus O’Meagher , Madhusudan Ganigara , David J. Tanous , David S. Celermajer , Rajesh Puranik
{"title":"Progress of right ventricular dilatation in adults with repaired tetralogy of Fallot and free pulmonary regurgitation","authors":"Shamus O’Meagher ,&nbsp;Madhusudan Ganigara ,&nbsp;David J. Tanous ,&nbsp;David S. Celermajer ,&nbsp;Rajesh Puranik","doi":"10.1016/j.ijchv.2014.02.003","DOIUrl":"10.1016/j.ijchv.2014.02.003","url":null,"abstract":"<div><h3>Background</h3><p>The time course of progressive dilatation of the right ventricle (RV) in adults with pulmonary regurgitation (PR) late after repair of tetralogy of Fallot (TOF) is poorly characterized.</p></div><div><h3>Methods</h3><p>We analysed cardiac MRI data (1.5 T) from 14 adult repaired TOF patients (26 ± 11 years of age) with dilated RVs and known significant PR, on 2 separate visits with a between MRI period of 2.1 ± 1.0 years.</p></div><div><h3>Results</h3><p>Indexed RV end diastolic volume (RVEDVi) increased over 2 years (142 ± 19 to 151 ± 20 mL/m<sup>2</sup>, <em>p</em> = 0.005; change = 8.4 ± 9.3 mL/m<sup>2</sup>, range = − 6 to 26 mL/m<sup>2</sup>; annual mL/m<sup>2</sup> increase = 4.3 ± 4.6; annual percentage increase = 3.1 ± 3.3%), whilst RV ejection fraction decreased (53 ± 8 to 49 ± 7 %, <em>p</em> = 0.039). RV muscular corpus (RVMC) EDVi significantly increased (130 ± 19 to 138 ± 20 mL/m<sup>2</sup>, <em>p</em> = 0.014), whereas RV outflow tract (RVOT) EDVi did not (12 ± 7 vs 13 ± 6 mL/m<sup>2</sup>, <em>p</em> = 0.390). No other RV or LV measures significantly changed during the inter-MRI period. The change in RVEDVi correlated significantly with LV end diastolic volume (<em>r</em> = − 0.582, <em>p</em> = 0.029), RVEDVi:LVEDVi (<em>r</em> = 0.6, <em>p</em> = 0.023) and RVMC EDVi (<em>r</em> = 0.9, <em>p</em> &lt; 0.001) but not RVOT EDVi (<em>r</em> = 0.225, <em>p</em> = 0.459).</p></div><div><h3>Conclusions</h3><p>Adult repaired TOF patients with free PR experienced a mean 3.1%, or 4.3 mL/m<sup>2</sup>, annual increase in RVEDVi, unrelated to the initial RVEDVi or PR fraction. The increase in RVEDVi was due to RVMC rather than RVOT dilatation. This provides a guide to the frequency of MR surveillance and insights into the natural history of progressive RV dilatation in this setting.</p></div>","PeriodicalId":90542,"journal":{"name":"International journal of cardiology. Heart & vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijchv.2014.02.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35837935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Repair or prosthesis insertion in ischemic mitral regurgitation: Two faces of the same medal 缺血性二尖瓣反流的修复或假体置入:同一奖章的两面
International journal of cardiology. Heart & vessels Pub Date : 2014-06-01 DOI: 10.1016/j.ijchv.2014.02.002
Antonio Maria Calafiore , Angela Lorena Iacò , Daniela Clemente , Reda Refaie , Silvio Romano , Mahmood Asif , Maria Penco , Michele Di Mauro
{"title":"Repair or prosthesis insertion in ischemic mitral regurgitation: Two faces of the same medal","authors":"Antonio Maria Calafiore ,&nbsp;Angela Lorena Iacò ,&nbsp;Daniela Clemente ,&nbsp;Reda Refaie ,&nbsp;Silvio Romano ,&nbsp;Mahmood Asif ,&nbsp;Maria Penco ,&nbsp;Michele Di Mauro","doi":"10.1016/j.ijchv.2014.02.002","DOIUrl":"10.1016/j.ijchv.2014.02.002","url":null,"abstract":"<div><h3>Objective</h3><p>The proper treatment of chronic ischemic mitral regurgitation (CIMR) is still under evaluation. The different role of mitral valve repair (MVr) or mitral valve prosthesis insertion (MVPI) is still not defined.</p></div><div><h3>Methods</h3><p>From May 2009 to December 2011 167 patients with ejection fraction (EF) ≤ 40% had MV surgery for CIMR, MVr in 135 (80.8%) and MVPI in 32 (19.2%). Indication to MVPI was a MV coaptation depth &gt; 10 mm. EF was lower (26 ± 7 vs 32 ± 6, p = 0.0000) in MVPI, whereas MR grade (3.6 ± 0.8 vs 2.7 ± 0.9, p = 0.0000), left ventricle dimensions (end diastolic, LVEDD, 62 ± 7 vs 57 ± 6 mm, p = 0.0001; end systolic, LVESD, 49 ± 8 vs 44 ± 8 mm, p = 0.0018), systolic pulmonary artery pressure (51 ± 22 vs 41 ± 16 mm Hg, p = 0.0037) and NYHA Class (3.6 ± 0.5 vs 2.8 ± 0.6, p = 0.0000) were higher.</p></div><div><h3>Results</h3><p>In-hospital mortality was similar (3.1 vs 3.7%) as well as 3-year survival (86 ± 6 vs 88 ± 4) and survival in NYHA Class I/II (80 ± 5 vs 83 ± 4). One hundred thirty nine patients had an echocardiographic evaluation after a minimum of 4 months (13 ± 8). EF rose significantly in both groups (from 26 ± 7% to 30 ± 4%, p = 0.0122, and from 32 ± 6% to 35 ± 8%, p = 0.0018). LVESD reduced significantly in both groups (from 49 ± 8 to 43 ± 9 mm, p = 0.0109, and from 44 ± 8 to 41 ± 7 mm, p = 0.0033). MR grade was significantly lower in patients who had MVPI (0.1 ± 0.2 vs 0.3 ± 0.3, p = 0.0011).</p></div><div><h3>Conclusions</h3><p>With appropriate indications, MVPI is a safe procedure which provides similar results to MVr with lower MR return, even if addressed to patients with worse preoperative parameters.</p></div>","PeriodicalId":90542,"journal":{"name":"International journal of cardiology. Heart & vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijchv.2014.02.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35837936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Optical coherence tomography characteristics of in-stent restenosis are different between first and second generation drug eluting stents 第一代和第二代药物洗脱支架支架内再狭窄的光学相干断层扫描特征不同
International journal of cardiology. Heart & vessels Pub Date : 2014-06-01 DOI: 10.1016/j.ijchv.2014.03.003
Kadriye Kilickesmez , Gianni Dall'Ara , Juan Carlos Rama-Merchan , Matteo Ghione , Alessio Mattesini , Carlos Moreno Vinues , Nikolaos Konstantinidis , Michele Pighi , Rodrigo Estevez-Loureiro , Carlo Zivelonghi , Alistair C. Lindsay , Gioel G. Secco , Nicolas Foin , Ranil De Silva , Carlo Di Mario
{"title":"Optical coherence tomography characteristics of in-stent restenosis are different between first and second generation drug eluting stents","authors":"Kadriye Kilickesmez ,&nbsp;Gianni Dall'Ara ,&nbsp;Juan Carlos Rama-Merchan ,&nbsp;Matteo Ghione ,&nbsp;Alessio Mattesini ,&nbsp;Carlos Moreno Vinues ,&nbsp;Nikolaos Konstantinidis ,&nbsp;Michele Pighi ,&nbsp;Rodrigo Estevez-Loureiro ,&nbsp;Carlo Zivelonghi ,&nbsp;Alistair C. Lindsay ,&nbsp;Gioel G. Secco ,&nbsp;Nicolas Foin ,&nbsp;Ranil De Silva ,&nbsp;Carlo Di Mario","doi":"10.1016/j.ijchv.2014.03.003","DOIUrl":"10.1016/j.ijchv.2014.03.003","url":null,"abstract":"<div><h3>Aims</h3><p>Characterization of neointimal tissue is essential to understand the pathophysiology of in-stent restenosis (ISR) after drug eluting stent (DES) implantation. Using optical coherence tomography (OCT), we compared the morphologic characteristics of ISR between first and second generation DES.</p></div><div><h3>Methods and Results</h3><p>OCT was performed in 66 DES-ISR, defined as &gt; 50% angiographic diameter stenosis within the stented segment. Patients with ISR of first generation sirolimus-eluting stents (SES), paclitaxel eluting stents (PES) and second generation zotarolimus-eluting stents (ZES), everolimus-eluting stents (EES) and biolimus-eluting stents (BES) were enrolled. Quantitative and qualitative ISR tissue analysis was performed at 1-mm intervals along the entire stent, and categorised as homogeneous, heterogeneous and neo-atherosclerosis. The presence of microvessels and peri-strut low intensity area (PSLIA) was determined in all ISR. Neoatherosclerosis was identified by lipid, calcium and thin-cap fibro-atheroma (TCFA) like lesions. We compared the two DES generations at both early (&lt; 1 year) and late (&gt; 1 year) follow-ups.</p><p>In second generation DES a heterogeneous pattern was prevalent both before and after 1 year (57.1% and 58.6% respectively). Neo-atherosclerosis was more common in the early period in first generation DES (19.4% vs 11.7%, p &lt; 0.01), but after one year was more prevalent in second generation DES (7.0% vs 19.3%, p &lt; 0.01). Similar prevalence of TCFAs was observed in both groups in all comparisons.</p></div><div><h3>Conclusions</h3><p>When ISR restenosis occurs in second generation DES, the current data suggest a different time course and different morphological characteristics from first generation. Future prospective studies should evaluate the relationship between ISR morphology, time course and clinical events.</p></div>","PeriodicalId":90542,"journal":{"name":"International journal of cardiology. Heart & vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijchv.2014.03.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35836857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
“Arterial circle of Vieussens” — An important intercoronary collateral “Vieussens动脉圈”-一个重要的冠状动脉间侧枝
International journal of cardiology. Heart & vessels Pub Date : 2014-06-01 DOI: 10.1016/j.ijchv.2014.02.006
Surender Deora, Sanjay Shah , Tejas Patel
{"title":"“Arterial circle of Vieussens” — An important intercoronary collateral","authors":"Surender Deora,&nbsp;Sanjay Shah ,&nbsp;Tejas Patel","doi":"10.1016/j.ijchv.2014.02.006","DOIUrl":"10.1016/j.ijchv.2014.02.006","url":null,"abstract":"","PeriodicalId":90542,"journal":{"name":"International journal of cardiology. Heart & vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijchv.2014.02.006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35835743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Efficacy of non-compliant balloon post-dilation in optimization of contemporary stents: A digital stent enhancement study 非顺应性球囊后扩张在当代支架优化中的效果:一项数字支架增强研究
International journal of cardiology. Heart & vessels Pub Date : 2014-06-01 DOI: 10.1016/j.ijchv.2014.03.006
Jaya Chandrasekhar , Christopher Allada , Simon O'Connor , Moyazur Rahman , Bruce Shadbolt , Ahmad Farshid
{"title":"Efficacy of non-compliant balloon post-dilation in optimization of contemporary stents: A digital stent enhancement study","authors":"Jaya Chandrasekhar ,&nbsp;Christopher Allada ,&nbsp;Simon O'Connor ,&nbsp;Moyazur Rahman ,&nbsp;Bruce Shadbolt ,&nbsp;Ahmad Farshid","doi":"10.1016/j.ijchv.2014.03.006","DOIUrl":"10.1016/j.ijchv.2014.03.006","url":null,"abstract":"<div><h3>Background</h3><p>There is no evidence from randomized trials for the benefit of routine non-compliant balloon (NCB) post-dilation after stent deployment. Despite being the gold standard, intravascular ultrasound is infrequently performed due to time and cost constraints and a suitable alternative technology is required for routine assessment of stent expansion. The purpose of this study was to assess the contribution of NCB post-dilation in optimizing contemporary stents by using digital stent enhancement (DSE).</p></div><div><h3>Methods</h3><p>We treated 120 patients with stent insertion and assessed the stents with DSE before and after NCB use. Optimal expansion was defined as the minimum stent diameter (MSD) ≥ 90% of the nominal stent diameter, an adaptation of the MUSIC and POSTIT trial criteria. Stent deployment was performed at 12 atm pressure followed by routine NCB post-dilation at ≥ 14 atm.</p></div><div><h3>Results</h3><p>The mean reference diameter on QCA was 2.75 mm (SD 0.63) and mean stent diameter was 3.15 mm (SD 0.46). At a mean stent deployment pressure of 11.7 atm (SD 2.4), only 21% of stents were optimally expanded. After NCB inflation at a mean of 16.9 atm (SD 2.8), MSD increased by 0.26 mm (SD 0.24), optimal stent expansion increased from 21% to 58% and mean stent symmetry ratio increased from 0.83 to 0.87 (p &lt; 0.0001).</p></div><div><h3>Conclusions</h3><p>Contemporary stents are sub-optimally expanded in the majority of cases after standard deployment compared with nominal sizes. Adjunctive NCB post-dilation optimized an additional 37% of stents. DSE analysis can assist in qualitative and quantitative stent assessments and can potentially facilitate a selective NCB post-dilation strategy to achieve optimal stent expansion.</p></div>","PeriodicalId":90542,"journal":{"name":"International journal of cardiology. Heart & vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijchv.2014.03.006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35836852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Corticosteroids increase intracellular free sodium ion concentration via glucocorticoid receptor pathway in cultured neonatal rat cardiomyocytes 糖皮质激素通过糖皮质激素受体途径增加培养新生大鼠心肌细胞内游离钠离子浓度
International journal of cardiology. Heart & vessels Pub Date : 2014-06-01 DOI: 10.1016/j.ijchv.2014.03.001
Daisuke Katoh, Kenichi Hongo, Keiichi Ito, Takuya Yoshino, Yosuke Kayama, Makoto Kawai, Taro Date, Michihiro Yoshimura
{"title":"Corticosteroids increase intracellular free sodium ion concentration via glucocorticoid receptor pathway in cultured neonatal rat cardiomyocytes","authors":"Daisuke Katoh,&nbsp;Kenichi Hongo,&nbsp;Keiichi Ito,&nbsp;Takuya Yoshino,&nbsp;Yosuke Kayama,&nbsp;Makoto Kawai,&nbsp;Taro Date,&nbsp;Michihiro Yoshimura","doi":"10.1016/j.ijchv.2014.03.001","DOIUrl":"10.1016/j.ijchv.2014.03.001","url":null,"abstract":"<div><h3>Background</h3><p>Glucocorticoids as well as mineralocorticoid have been shown to play essential roles in the regulation of electrical and mechanical activities in cardiomyocytes. Excess of these hormones is an independent risk factor for cardiovascular disease. Intracellular sodium ([Na<sup>+</sup>]<sub>i</sub>) kinetics are involved in cardiac diseases, including ischemia, heart failure and hypertrophy. However, intrinsic mediators that regulate [Na<sup>+</sup>]<sub>i</sub> in cardiomyocytes have not been widely discussed. Moreover, the quantitative estimation of altered [Na<sup>+</sup>]<sub>i</sub> in cultured cardiomyocytes and the association between the level of [Na<sup>+</sup>]<sub>i</sub> and the severity of pathological conditions, such as hypertrophy, have not been precisely reported.</p></div><div><h3>Methods and results</h3><p>We herein demonstrate the quantitative estimation of [Na<sup>+</sup>]<sub>i</sub> in cultured neonatal rat cardiomyocytes following 24 h of treatment with corticosterone, aldosterone and dexamethasone. The physiological concentration of glucocorticoids increased [Na<sup>+</sup>]<sub>i</sub> up to approximately 2.5 mM (an almost 1.5-fold increase compared to the control) in a dose-dependent manner; this effect was blocked by a glucocorticoid receptor (GR) antagonist but not a mineralocorticoid receptor antagonist. Furthermore, glucocorticoids induced cardiac hypertrophy, and the hypertrophic gene expression was positively and significantly correlated with the level of [Na<sup>+</sup>]<sub>i</sub>. Dexamethasone induced the upregulation of Na<sup>+</sup>/Ca<sup>2 +</sup> exchanger 1 at the mRNA and protein levels.</p></div><div><h3>Conclusions</h3><p>The physiological concentration of glucocorticoids increases [Na<sup>+</sup>]<sub>i</sub> via GR. The dexamethasone-induced upregulation of NCX1 is partly involved in the glucocorticoid-induced alteration of [Na<sup>+</sup>]<sub>i</sub> in cardiomyocytes. These results provide new insight into the mechanisms by which glucocorticoid excess within a physiological concentration contributes to the development of cardiac pathology.</p></div>","PeriodicalId":90542,"journal":{"name":"International journal of cardiology. Heart & vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijchv.2014.03.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35836853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
The predictive value of arterial and valvular calcification for mortality and cardiovascular events 动脉和瓣膜钙化对死亡率和心血管事件的预测价值
International journal of cardiology. Heart & vessels Pub Date : 2014-06-01 DOI: 10.1016/j.ijchv.2014.02.001
Rachel Nicoll, Michael Y. Henein
{"title":"The predictive value of arterial and valvular calcification for mortality and cardiovascular events","authors":"Rachel Nicoll,&nbsp;Michael Y. Henein","doi":"10.1016/j.ijchv.2014.02.001","DOIUrl":"10.1016/j.ijchv.2014.02.001","url":null,"abstract":"<div><p>A review of the predictive ability of arterial and valvular calcification has shown an additive effect of calcification in more than 1 location in predicting mortality and coronary heart disease, with mitral annual calcification being a particularly strong predictor. In individual arteries and valves there is a clear association between calcification presence, extent and progression and future cardiovascular events and mortality in asymptomatic, symptomatic and high risk patients, although adjustment for calcification in other arterial beds generally renders associations non-significant. Furthermore, in acute coronary syndrome, culprit plaque is normally not calcified. This would tend to reduce the validity of calcification as a predictor and suggest that the association with cardiovascular events and mortality may not be causal. The association with stroke is less clear; carotid and intracranial artery calcification show little predictive ability, with symptomatic plaques tending to be uncalcified.</p></div>","PeriodicalId":90542,"journal":{"name":"International journal of cardiology. Heart & vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijchv.2014.02.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35837931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 45
Are ICD recipients able to foresee if they want to withdraw therapy or deactivate defibrillator shocks? ICD受者是否能够预见他们是否想要停止治疗或停用除颤器电击?
International journal of cardiology. Heart & vessels Pub Date : 2013-12-01 DOI: 10.1016/j.ijchv.2013.11.001
Ingela Thylén , Debra K. Moser , Misook L. Chung , Jennifer Miller , Christina Fluur , Anna Strömberg
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引用次数: 23
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