hayashi mutsuharu

© 2018 Japanese College of Cardiology Background: Although cardiac sarcoidosis is associated with poor prognosis, diagnosis of the disease is challenging and the sensitivity and specificity of diagnostic modalities are limited. This study was performed to evaluate the potential of serum microRNAs (miRNAs) as diagnostic biomarkers for cardiac sarcoidosis. Methods: We performed genome-wide expression profiling for 2565 miRNAs (Human-miRNA ver.21) using peripheral blood samples from 5 patients with cardiac sarcoidosis (61 ± 9 years) and 3 healthy controls (54 ± 7 years). From this screening study, we selected 12 miRNAs that were significantly related to cardiac sarcoidosis. Next, we performed real-time polymerase chain reaction (PCR) on blood samples from 15 new patients with cardiac sarcoidosis and 4 healthy controls to quantify the expression of these 12 miRNAs. Results: In the screening study, 12 miRNAs were differentially expressed (p < 0.01) in all 5 patients with cardiac sarcoidosis, showing greater fold-change values (>4 or <0.25) compared with the expression in the 3 healthy controls. Analysis of the real-time PCR for blood samples from the other 15 patients and 4 controls using Mann–Whitney U tests revealed that the expression of miR-126 and miR-223 was significantly higher in the patients than in the healthy individuals. However, there were no differences in the expressions of miRNA-126 and miR-223 between patients with only cardiac lesions and those with extra-cardiac lesions. Conclusions: Our results demonstrate the potential of serum miR-126 and miR-223 as new-generation biomarkers for the differential diagnosis of cardiac sarcoidosis in patients with heart failure.

【目的】本研究の目的は、高齢心不全患者を対象に抑うつと身体機能との関連を検討した。【方法】65歳以上の心不全患者120例を対象とした。対象者をGeriatric Depression Scale(GDS-5)で抑うつなし群(GDS-5≦1)、抑うつあり群(GDS-5≧2)の2群に分け、心不全病態指標、身体機能、認知機能の項目についてχ2検定、対応のないt-検定を用いて比較した。【結果】全対象者のうち抑うつは58例(48%)に認めた。両群間の比較では年齢、性別、BMI、認知機能、病態指標には差を認めなかった。しかし身体機能(握力、等尺性膝伸展筋力、6分間歩行距離、歩行速度)は、抑うつ群で有意に低値を示した。【結論】本結果より高齢心不全患者の抑うつ合併例は身体機能が低下していることが明らかとなった。高齢心不全患者に対する身体的フレイル判定の際には、抑うつも評価する必要性が示唆された。(著者抄録)

© 2018 The Author(s). Background: The early prediction of acute kidney injury (AKI) can facilitate timely intervention and prevent complications. We aimed to understand the predictive value of urinary liver-type fatty-acid binding protein (L-FABP) levels on admission to medical (non-surgical) cardiac intensive care units (CICUs) for AKI, both independently and in combination with serum N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels. Methods: We prospectively investigated the predictive value of L-FABP and NT-proBNP for AKI in a large, heterogeneous cohort of patients treated in medical CICUs. Baseline urinary L-FABP and serum NT-proBNP were measured on admission. AKI was diagnosed according to the Kidney Disease: Improving Global Outcomes criteria. We studied 1273 patients (mean age, 68years), among whom 46% had acute coronary syndromes, 38% had acute decompensated heart failure, 5% had arrhythmia, 3% had pulmonary hypertension, 2% had acute aortic syndrome, 2% had infective endocarditis, and 1% had Takotsubo cardiomyopathy. Results: Urinary L-FABP levels correlated with serum NT-proBNP levels (r=0.17, p<0.0001). AKI occurred in 224 patients (17.6%), including 48 patients with stage 2 or 3 disease. Patients who developed AKI had higher one-week and 6-month mortality than those who did not develop AKI (p=0.0002 and p=0.003, respectively). In the multivariate logistic analysis, both L-FABP (p<0.0001) and NT-proBNP (p=0.006) were independently associated with the development of AKI. Adding L-FABP and NT-proBNP to a baseline model that included established risk factors further improved reclassification (p<0.001) and discrimination (p<0.01) beyond that of the baseline model or any single biomarker individually. Conclusions: Urinary L-FABP and serum NT-proBNP levels on admission are independent predictors of AKI, and when used in combination, improve early prediction of AKI in patients hospitalized at medical CICUs.

Background: A modestly elevated circulating D-dimer level may be relevant to coronary artery disease (CAD), but its prognostic value, both independently and in combination with estimated glomerular filtration rate (eGFR), for long-term death has not been fully evaluated in stable CAD patients. Methods and Results: Baseline plasma D-dimer levels and eGFR were measured in 1,341 outpatients (mean age: 65 years) with prior myocardial infarction (MI), coronary revascularization, and/or angiographic evidence of a significant stenosis (> 50%) for at least one of the major coronary arteries. Among these patients, 43% had prior MI, 47% had prior coronary revascularization, 41% had multivessel CAD, 14% had paroxysmal or persistent atrial fibrillation, 32% had diabetes, and 32% had chronic kidney disease (eGFR < 60 mL/min/1.73 m2). D-dimer levels weakly correlated with eGFR (r=-0.25; P< 0.0001). During a mean follow-up period of 73 months, there were 124 deaths, including 61 cardiovascular deaths. Multivariate Cox regression analysis identified D-dimer levels (P=0.001) and eGFR (P=0.006) as independent predictors of all-cause death. Adding both D-dimer and eGFR to a baseline model with established risk factors improved the net reclassification (P< 0.005) and integrated discrimination improvement (P< 0.05) greater than that of any single biomarker or baseline model alone. Conclusions: The combinatorial value of assessing D-dimer levels and eGFR may provide useful insight regarding stable CAD patients' long-term risk stratification.

Whether trough-phase rivaroxaban concentrations provide sufficient anticoagulation needs more study. We evaluated levels of coagulation activation markers in the trough concentration phase in nonvalvular atrial fibrillation (NVAF) patients, and the correlation between these markers and rivaroxaban concentration. Fifty-five Japanese NVAF patients received 24-week rivaroxaban treatment of either 15 or 10 mg once-daily in the morning. Of these, 26 patients had no history of anticoagulant therapy (naive group) and 29 had switched from warfarin (warfarin group). D-dimer and prothrombin fragment 1 + 2 (F1 + 2) levels, and protein C activities were measured at 0 (baseline), 12 and 24 weeks of rivaroxaban treatment just before the patient's regular dosing time (trough phase). For 49 patients, D-dimer, F1 + 2, and rivaroxaban concentrations were also measured twice between 28 and 32 weeks of rivaroxaban treatment at non-trough times to achieve a range of drug concentrations for correlation analysis. For the naive group, D-dimer and F1 + 2 levels were significantly reduced (p < 0.01) from baseline at 12 and 24 weeks. For the warfarin group, these values were unchanged for D-dimer but significantly increased (p < 0.01) for F1 + 2. Protein C activity was unchanged in the naive group and was increased (p < 0.01) in the warfarin group. Prothrombin time (r = 0.92, p < 0.0001) and activated partial thromboplastin time (r = 0.54, p < 0.0001) correlated with rivaroxaban concentration, but not D-dimer and F1 + 2 levels. In conclusion, rivaroxaban in the trough phase is comparable to warfarin in reducing D-dimer levels. Although trough level rivaroxaban suppresses F1 + 2 less than warfarin, the higher activities of protein C with rivaroxaban treatment compared to warfarin treatment may counterbalance this. Lack of correlation between rivaroxaban concentration and D-dimer and F1 + 2 levels suggests that trough concentrations of rivaroxaban reduce their concentrations as effectively as higher levels do.

Although the renin-angiotensin system (RAS) is counter-balanced by a salt-sensitive mechanism in the hypertensive state, both are reported to be up-regulated in chronic kidney disease (CKD) patients. We conducted this study to evaluate the associations among the RAS, renal function, hypertension, and atherosclerosis, as well as to identify markers for salt-sensitivity. A total of 213 pre-dialysis CKD patients with preserved cardiac function (EF > 50 %) were enrolled. Their renal and cardiac biochemical markers and plasma renin activity (PRA) were measured, and echocardiography and carotid artery ultrasound were performed. Their salt intake was estimated by the NaCl excretion from a 24-h collected urine sample. The PRA was higher in patients with hypertension (p = 0.018), and had a significant negative correlation with the eGFR (r = -0.23, p = 0.0067). Importantly, the PRA had a strong negative correlation with the brain natriuretic peptide (BNP) level (r = -0.28, p = 0.017) regardless of whether the patients were being treated with RAS inhibitors. The BNP level was related to the renal functions (eGFR: p = 0.001, ACR: p = 0.009). There was a significant positive correlation between the BNP level and carotid intima-media thickness (p < 0.001). A multivariate analysis revealed that older age and an excess of NaCl excretion were independent predictors of BNP elevation (p = 0.02 and 0.003, respectively). Our analysis revealed details of the counterbalance between BNP and PRA, as well as identifying that excess salt intake is a predictor of BNP elevation. These results indicate that the BNP could be a possible valuable marker for salt sensitivity, and that high salt sensitivity could facilitate atherosclerosis in CKD patients.

Objectives: The number of elderly patients with hypertension has been steadily increasing. However, there are limited data on the safety and efficacy of the new angiotensin type 1 receptor blocker (ARB) azilsartan in elderly patients with hypertension. We investigated the clinical efficacy and safety of azilsartan in this population. Methods: The study population comprised 56 ambulatory patients with essential hypertension. We evaluated the reduction in blood pressure and safety after 12 weeks of treatment with azilsartan in 29 hypertensive patients65 years of age (aged group) in comparison with the findings in 27 patients <65 years of age (non-aged group). Results: Systolic blood pressure in the aged group declined significantly from 155 +/- 18mmHg at baseline to 138 +/- 11mmHg after 12 weeks of treatment with azilsartan, and that in the non-aged group also declined significantly from 152 +/- 20mmHg at baseline to 142 +/- 13mmHg after 12 weeks of treatment with azilsartan. There were no significant differences in the magnitude of change in blood pressures from pre-treatment to post-treatment with azilsartan between the non-aged and aged groups. There were no changes in clinical laboratory findings, including serum levels of creatinine, potassium, lipids, and other metabolic variables, after 12 weeks of treatment with azilsartan in both groups. Conclusions: Our findings suggest that azilsartan is effective in lowering blood pressure in elderly patients and may be safe. Therefore, azilsartan could be a valuable option for treating hypertension in elderly and non-elderly patients.

© 2015, Springer Japan. New oral anticoagulants (NOACs) are now clinically available. However, few studies have demonstrated which patients with non-valvular atrial fibrillation (NVAF) actually receive NOACs in a clinical setting. We analyzed 182 NVAF patients who received oral anticoagulants. Clinical backgrounds and the risk of stroke, systemic embolism, and bleeding associated with oral anticoagulants were investigated. Seventy-three (40 %) patients were treated with NOACs and 109 (60 %) patients were treated with warfarin. A significantly lower mean number of bleeding risk factors was observed among the patients treated with NOACs than among those treated with warfarin (P = 0.010). Of the bleeding risk factors, NOACs were significantly less frequently prescribed in patients with a bleeding history and elderly subjects (>65 years) than in those who received warfarin (P < 0.001 and P = 0.029). A multivariate logistic regression analysis revealed that CHF and bleeding history were independently and significantly associated with the administration of NOACs (P = 0.047 and P = 0.003). The rate of a history of intracranial hemorrhage was comparable between the patients treated with NOACs and those treated with warfarin (P = 1.000). Significantly lower rates of a history of gastrointestinal and other minor bleeding were observed in the patients who received NOACs versus those who received warfarin (P = 0.001 and P = 0.026). NOACs were less frequently prescribed in patients with a history of bleeding, especially those with a history of gastrointestinal bleeding in a clinical setting.

© 2015 The Japanese Society of Internal Medicine. Takotsubo cardiomyopathy is a disorder characterized by left ventricular apical ballooning with preceding emotional and/or physical stressors. This condition is also an important differential diagnosis of acute coronary syndrome. We herein describe a case of Takotsubo cardiomyopathy, a significant clinical phenomenon, triggered by delayed-onset rhabdomyolysis following the administration of long-term statin treatment, without any preceding stressors or changes in the patient’s medical condition, in association with complaints of nonspecific muscle-related symptoms. Although an electrocardiogram showed remarkable ST-segment elevation, a careful reading of the electrocardiogram findings revealed the features of Takotsubo cardiomyopathy. Withdrawing the statin therapy improved the patient’s cardiac function.

© 2015, International Heart Journal Association. All rights reserved. Hypertrophic cardiomyopathy (HCM) has various morphological and clinical features. A decade has passed since the previous survey of the epidemiological and clinical characteristics of Japanese HCM patients. The Aichi Hypertrophic Cardiomyopathy (AHC) Registry is based on a prospective multicenter observational study of HCM patients. The clinical characteristics of 42 ambulant HCM patients followed up for up to 5 years were investigated. The primary endpoint was major adverse cardiac events (MACE), defined as death, non-fatal stroke, admission due to congestive heart failure (CHF), or episodes of sustained ventricular tachycardia/fibrillation. The MACE-free survival during the 5-year follow-up period was 76% according to Kaplan–Meier analysis. HCM-related death occurred in 3 (7%) patients and SCD occurred in 2 (5%) patients. Additionally, 3 (7%) patients were admitted to the hospital due to CHF. Meanwhile, sustained VT was detected in one (2%) of the patients who received ICD implantation and subsequently terminated with antitachycardia pacing using an ICD. The patients with HCM exhibiting left ventricular outflow obstruction (HOCM) had a slightly lower MACE-free survival rate than those with neither HOCM nor dilated-HCM (dHCM) (71% versus 81%, log-rank P = 0.581). Furthermore, the patients with dHCM demonstrated a significantly lower MACE-free survival rate than those with neither HOCM nor dHCM (33% versus 81%, log-rank P = 0.029). In the AHC Registry targeting current Japanese HCM patients, we demonstrated that many HCM patients continue to suffer from MACE despite the development of various treatments for HCM.

High low-density lipoprotein-cholesterol to high-density lipoprotein-cholesterol (L/H) ratio is associated with progressions of coronary arteriosclerosis and chronic kidney disease. On the other hand, renal function markedly declined after acute myocardial infarction (AMI). The aims of the present study were (1) to identify what type of patients with AMI would have high L/H ratio at follow-up and (2) to evaluate whether decline in renal function after AMI had accelerated or not in patients with high L/H ratio. The 190 eligible AMI patients who underwent primary percutaneous coronary intervention (PCI) and received atorvastatin (10 mg) were divided into one of two groups according to the L/H ratio at 6-month follow-up: L/H > 2 group (n = 81) or L/H a parts per thousand currency sign2 group (n = 109). The characteristics on admission in the two groups were examined. Furthermore, changes in serum creatinine (sCr) and estimated glomerular filtration rate (eGFR) during 1- and 6-month follow-up were compared between the two groups. L/H > 2 group were significantly younger and had greater body mass index (BMI) and worse lipid profile on admission compared with L/H a parts per thousand currency sign2 group. Percentage increase in sCr and percentage decrease in eGFR during 1-month follow-up in L/H > 2 group tended to be greater than in L/H a parts per thousand currency sign2 group, and those during 6-month follow-up were significantly greater (16.5 +/- A 2.77 vs. 9.79 +/- A 2.23 %, p = 0.03 and 11.8 +/- A 1.93 vs. 2.75 +/- A 3.85 %, p = 0.04, respectively). In AMI patients undergoing primary PCI, those who were young and had large BMI and poor lipid profile on admission were likely to have a high L/H ratio at follow-up despite statin therapy. In addition, the decline in renal function after AMI had significantly accelerated in patients with high L/H ratio.

The prognosis of patients with diastolic heart failure (HF) is as poor as that of patients with systolic HF. Greater chronic kidney disease-associated mortality occurs in patients with left ventricular (LV) diastolic HF than in those with systolic HF. Indoxyl sulfate (IS), a uremic toxin, directly affects cardiac cells adversely in in vitro experiments. We investigated the association of IS, a uremic toxin, and chronic kidney disease with LV diastolic dysfunction in the clinical setting. The present study included 204 consecutive patients with preserved LV systolic function. To evaluate LV function, all patients underwent echocardiography. To measure the plasma IS levels and estimated glomerular filtration rate (eGFR), blood samples were obtained. Of the 204 patients, 75 (37%) had LV diastolic dysfunction. A significantly lower prevalence of LV diastolic dysfunction was present in patients with lower plasma IS levels (<= 1.0 mu g/ml) than those with greater plasma IS levels (38 [29%] vs 37 [51%], p <0.001). Furthermore, a significantly lower prevalence of LV diastolic dysfunction was present in patients with lower plasma IS levels and preserved eGFR than those with greater plasma IS levels and preserved eGFR, those with lower plasma IS levels and a reduced eGFR, or those with greater plasma IS levels and reduced eGFR (20 [21%] vs 18 [53%], p = 0.001; 20 [21%] vs 18 [46%], p = 0.004; and 20 [21%] vs 19 [56%], p <0.001, respectively). In conclusion, greater plasma IS levels or a reduced eGFR, or both, represent an increased risk of LV diastolic dysfunction. (c) 2013 Elsevier Inc. All rights reserved. (Am J Cardiol 2013;111:712-716)

Objective: Peripheral artery disease (PAD) is frequently seen in hemodialysis patients, endovascular therapy (EVT) often being performed in such cases. We examined combined prognostic utility of pre-procedural serum albumin and C-reactive protein (CRP) in combination for predicting clinical outcome after EVT in HD patients with PAD. Methods: A total of 450 hemodialysis patients successfully undergoing EVT for PAD were followed-up for up to 8 years. They were divided according to median serum albumin and CRP levels measured prior to EVT into four groups [those with high albumin and low and high CRP levels, respectively, and low albumin and low and high CRP levels, respectively]. We analyzed the incidence of major adverse events (MAE) as a composite endpoint including target lesion revascularization (TLR), amputation and all-cause death, and major adverse limb events (MALE) as a composite endpoint including TLR and amputation. Results: During the follow-up period (36 +/- 31months), 206 MAE (46%) including 67 TLR, 45 amputations and 94 deaths occurred. Event-free survival rates from MAE for 8 years were 41.9%, 21.2%, 29.8%, and 13.2% in groups with high albumin and low CRP levels, with high albumin and high CRP levels, with low albumin and low CRP levels, and with low albumin and high CRP levels, respectively (P = 0.0001). Similar tendency was also seen in incidence of MALE (P < 0.0001). Conclusion: Lower albumin and elevated CRP levels could strongly predict MAE and MALE after EVT in hemodialysis patients. (C) 2012 Elsevier Ireland Ltd. All rights reserved.

Background: Cardiorespiratory fitness (CRF) can predict future cardiovascular disease. Rupture of vulnerable plaque which often has a large lipid core with a thin fibrous cap causes acute coronary syndrome including sudden cardiac death. We tested our hypothesis that preserved CRF is associated with low lipid composition and thick fibrous cap thickness of coronary lesions. Methods: We prospectively performed both integrated backscatter intravascular ultrasound (IB-IVUS) and optical coherence tomography (OCT) for 77 non-culprit coronary lesions in 77 consecutive angina pectoris patients who underwent percutaneous coronary intervention (PCI). Percentage of achieved of predicted peak oxygen consumption (%PPeak Vo2) calculated based on measured peak Vo2 using a cardiopulmonary exercise test performed post PCI was adapted as an indicator of patient CRF. Results: Patients were divided into two groups [those with preserved CRF (%PPeak Vo2 &gt 82%) (Group I) or others (Group II)]. Coronary plaques of Group I patients had significantly smaller lipid volume, greater fibrous volume, and thicker fibrous cap thickness than those of Group II (32 ± 14% vs. 45 ± 13%, p &lt 0.001 57 ± 11% vs. 49 ± 11%, p &lt 0.001 and 177.7 ± 20.9 μm vs. 143.7 ± 36.9 μm, p &lt 0.001). In multivariate linear regression analysis, %PPeak Vo2 showed a significantly negative correlation with lipid volume and a positive correlation with fibrous volume and fibrous cap thickness (β = - 0.418, p = 0.001 β = 0.361, p = 0.006 and β = 0.339, p = 0.008). Conclusions: High %PPeak Vo2 was associated with low lipid volume, high fibrous volume and thick fibrous cap thickness in coronary lesions. These results may well suggest an attenuated risk of cardiovascular events in patients with preserved CRF. © 2011 Elsevier Ireland Ltd.

Background: After abdominal aortic aneurysm (AAA) repair, relatively low survival during long-term follow-up remains an unresolved issue. Stress myocardial perfusion single-photon emission computed tomography (SPECT) well predicts future mortality overall, as well as providing diagnoses of coronary artery disease. The prognostic value of myocardial SPECT findings after AAA repair, however, remains unclear. Methods and Results: This study followed 285 patients, all undergoing preoperative pharmacologic stress myocardial perfusion SPECT to determine summed stress score (SSS), then elective AAA repair by open AAA repair or endovascular aneurysm repair. The endpoint of the study was cardiac death. The median follow-up duration was 925 days (range, 541-1,095 days). Twenty-four (8%) died during follow-up. Kaplan-Meier analysis showed that patients with SSS ≥9 had a significantly poorer prognosis than those with SSS &lt 9 (76% vs. 93%, P=0.003). Multivariate Cox proportional hazards analysis indicated that SSS ≥9, diabetes, and chronic kidney disease ≥ stage 3 could significantly and independently predict long-term cardiovascular mortality in patients after AAA repair (hazard ratio [HR], 4.2 95% confidence interval [CI]: 1.8-9.7, P=0.001 HR, 3.0 95% CI: 1.2-7.4, P=0.020 and HR, 4.1 95% CI: 1.7-10.1, P=0.029, respectively). Conclusions: Preoperative pharmacologic stress myocardial perfusion SPECT is a useful method to predict longterm cardiovascular mortality for patients undergoing elective AAA repair.

Background and purpose: Percutaneous coronary intervention (PCI) with a drug-eluting stent (DES) is one of the standard treatments for patients with stable angina pectoris (AP). In spite of a notable effect in preventing restenosis after PCI, DES cannot improve the mortality of patients compared to a bare-metal stent (BMS). On the other hand, periprocedural myocardial injury (PMI) is related to poor prognosis in patients undergoing PCI. We compared DES to BMS in the incidence of PMI in patients with stable AP. Methods and subjects: We enrolled 265 consecutive patients with AP undergoing successful stent implantation. A blood sample was obtained from all patients immediately before and 24 h after PCI. PMI was defined as an increase in creatine kinase-myocardial band isozyme fraction (CK-MB) greater than the upper limit of reference range 24 h after PCI. During the study period, sirolimus- and paclitaxel-eluting stents were used as DES. The strategy of PCI including the type of stent to implant was left to the discretion of the operator. Results: Patients were divided into two groups (DES group, n = 136 and BMS group, n = 129). The incidence of PMI was significantly higher in the DES group than in the BMS group (24% vs. 12%, p = 0.015). Use of DES remained an independent predictor of PMI on multivariate logistic regression analysis after adjustment for confounding factors (odds ratio 2.20, 95% CI, 1.07-4.51, p = 0.032). Conclusions: Implantation of the first-generation DES including sirolimus- and paclitaxel-eluting stents was associated with a higher incidence of PMI in patients with AP compared to BMS. (C) 2012 Japanese College of Cardiology. Published by Elsevier Ltd. All rights reserved.

Coronary calcification is proportional to the extent and severity of atherosclerotic disease, and is a predictor of cardiac events. Furthermore, coronary calcification protruding into the lumen is considered as one type of vulnerable plaque. Optical coherence tomography (OCT) can provide in vivo imaging of the detailed vessel wall structure of the coronary artery with high resolution, as in the histological approach. We analyzed coronary calcification in that fashion using OCT in vivo. This study consisted of 70 superficial coronary calcifications of 39 consecutive patients who underwent percutaneous coronary intervention. After revascularization, OCT was performed in the treated vessel. We analyzed morphologic characteristics and the quantification of OCT-determined coronary calcification. Superficial coronary calcifications were classified into two groups depending on whether they did not intrude the lumen (type I) or did (type II). The distance from the lumen and the volume of each calcification were then measured. Superficial coronary calcifications were classified into two groups; type I, n = 39 (56%) and type II, n = 31 (44%). Type II calcifications were located significantly closer to the lumen [80 mu m (60-130) vs. 130 mu m (90-260), p = 0.015], and tended to be smaller, but did not show a significant difference [0.65 (0.26-1.3) mm(3) vs. 1.2 (0.47-1.9) mm(3), p = 0.153] compared to those of type I. In conclusion, OCT could visualize superficial coronary calcifications in detail and enable us to evaluate in vivo morphologic characterizations and quantify them.

Background: Percutaneous coronary intervention (PCI) with drug-eluting stent (DES) is widely performed in patients with coronary artery disease, but the high restenosis rate remains a major clinical problem after implantation of DES in patients on hemodialysis (HD). Until now, there are limited reports regarding the long-term clinical outcome after implantation of DES in this patient population. Methods and Results: We compared bare metal stent (BMS) and DES for long-term clinical outcomes, such as target lesion revascularization (TLR), in HD patients undergoing PCI. BMS and DES were implanted in 204 and 301 patients, respectively. Baseline and lesion characteristics were comparable between the 2 groups. By Kaplan-Meier analysis, event rates of major adverse cardiac events for 6 years were significantly lower in the DES group than in the BMS group (42.5% vs. 58.0%, P=0.036). Although there were no significant differences in TLR rates between patients treated with DES and those with BMS at 1 year after PCI (17.8% vs. 21.3%, P=0.32), patients treated with DES had significantly lower rates of TLR compared with those treated with BMS beyond the 1-year follow-up after PCI (16.4% vs. 30.9%, P=0.019). Conclusions: In patients on HD, implantation of DES might be more effective for preventing TLR in the medium to long follow-up period than BMS, although restenosis after PCI with DES is common in the short term. (Circ J 2012; 76: 1609-1615)

Aims/hypothesis End-stage renal disease (ESRD) patients with diabetes have been regarded as being at the highest risk of cardiovascular disease. We therefore investigated the relationship between diabetes and the incidence of peripheral artery disease (PAD) in new haemodialysis patients. Methods We enrolled 1,513 ESRD patients who had just begun haemodialysis therapy. They were divided into two groups: those with (n=739) and those without diabetes (n=774). The endpoint was the development of PAD, defined as ankle brachial pressure index <= 0.9 or toe brachial pressure index <0.7 in patients with an ankle brachial pressure index >0.9. Results According to the Kaplan-Meier method, the 10 year event-free rate for development of PAD and lower limb amputation was significantly lower in the diabetes group than in the non-diabetes group (60.3% vs 82.8%, HR 2.99, 95% CI 2.27, 3.92, p<0.0001 and 93.9% vs 98.9%, HR 5.59, 95% CI 2.14, 14.7, p=0.0005 for PAD and lower limb amputation, respectively). In patients with diabetes, quartile analysis of HbA(1c) levels showed that the highest quartile group (>= 6.8% [51 mmol/mol]) had significant development of PAD and lower limb amputation compared with lower quartile groups (PAD HR 1.63, 95% CI 1.17, 2.28, p=0.0038; lower limb amputation HR 2.99, 95% CI 1.17, 7.70, p=0.023). Conclusions/interpretation Diabetes was a strong predictor of PAD after initiation of haemodialysis therapy in patients with ESRD. In addition, higher HbA1c levels were associated with increased risk of developing PAD and requiring limb amputation in such diabetic populations.

Background. It is well known that chronic kidney disease is a strong independent predictor of adverse outcomes after percutaneous coronary intervention in patients with ischemic heart disease. Recently, pen-procedural myocardial injury has been associated with adverse cardiac events. The aim of this study was to investigate the relationship between renal function and pen-procedural myocardial injury in patients undergoing elective stent implantation. Methods. This study comprised 273 consecutive patients who underwent elective stent implantation. They were divided into two groups: estimated glomerular filtration rate (eGFR) <60 mL/min/1.73m(2) and eGFR >= 60 mL/min/1.73m(2). Pen-procedural TnT levels higher than three times the normal limit were defined as pen-procedural myocardial injury. Results. Patients with eGFR <60 mL/min/1.73m(2) showed a higher incidence of pen-procedural myocardial injury compared to patients with eGFR >= 60 mL/min/1.73m(2) (4.3 versus 20.9%, P < 0.0001). Even after a multivariate adjustment, the eGFR level predicted pen-procedural myocardial injury [odds ratio 0.92, 95% confidence interval (CI): 0.89-0.95, P < 0.0001]. Total stent length was also an independent predictor of pen-procedural myocardial injury (odds ratio 1.09, 95% CI: 1.02-1.16, P = 0.009). Using a receiver-operating curve analysis, eGFR level of 62.1 mL/min/1.73m(2) (sensitivity 93.3%, specificity 57.2%) was the best value (area under the curve = 0.803) to maximize the power of eGFR levels in predicting pen-procedural myocardial injury. Conclusions. Patients with eGFR <60 mL/min/1.73m(2) were strongly associated with pen-procedural myocardial injury after elective stent implantation. Therefore, eGFR may be a simple and convenient predictor of peri-procedural myocardial injury.

Background: Even in the drug-eluting stent era, adverse cardiac events, including restenosis after percutaneous coronary intervention (PCI), have been more frequently seen in patients on hemodialysis (HD) than in non-HD patients. The objective of this study was to compare the sirolimus-eluting stent (SES) and everolimus-eluting stent (EES) for prevention of adverse cardiac events, including restenosis, in HD patients. Methods and Results: A total of 100 consecutive patients on HD who underwent PCI were enrolled and randomly assigned to receive SES or EES. Although there was no difference between the 2 groups in baseline patient and lesion characteristics, the angiographic restenosis rate at 8-month follow-up was 21.2% in the SES group and 8.7% in the EES group (P=0.041). Significant differences were also seen in % diameter stenosis (%DS), minimal lumen diameter, and late lumen loss at 8-month follow-up (P=0.0024, P=0.0040, and P=0.033, respectively). During the 1-year follow-up, major adverse cardiac events occurred in 11(22.0%) patients in the SES group and in 5 (10.0%) patients in the EES group (P=0.10). Conclusions: The use of EES was as safe as that of SES. Moreover, EES significantly prevented restenosis in patients on maintenance HD compared with SES. (Circ J 2012; 76: 351-355)

Objective Eicosapentaenoic acid (EPA) of the omega-3 polyunsaturated fatty acids (omega-3 PUFA) family plays important roles in the prevention of cardiovascular disease (CVD), while, arachidonic acid (AA) of the omega-6 PUFA family promotes inflammatory and prothrombotic influences. The complexity of coronary lesions represents the vulnerability of patients. The aim of this study was to investigate the association between the plasma EPA/AA ratio and the prevalence of complex coronary lesion morphology. Methods This study consisted of 206 consecutive patients with stable angina pectoris (sAP). Each coronary lesion was determined either as complex or simple based on angiographic findings. To examine the plasma fatty acid level, blood samples were obtained. Patients were divided into three groups according to the obtained plasma EPA/AA ratio: the highest tertile, n=67, the 2nd tertile, n=70, or the lowest tertile, n=69. Results A higher incidence of complex coronary lesion was obtained from patients with a lower plasma EPA/AA ratio [43 (62%) vs. 31 (44%) vs. 25 (37%), p=0.011]. High-sensitivity CRP levels and a low plasma EPA/AA ratio could independently predict the prevalence of complex coronary lesions on multivariate logistic regression analysis [odds ratio 1.83 (95% CI 1.03-3.25), p=0.038 and odds ratio 2.10 (95% CI 1.11-3.94), p=0.02)]. Conclusion In patients with sAP, a low plasma EPA/AA ratio was significantly associated with a high prevalence of complex coronary lesions.