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Silent MI

Su-Jin Lee, Youn-Sang Jung, Min-Ho Yoon, So-Mi Kang, Ah-Young Oh, Jee-Hyun Lee, So-Young Jun, Tae-Gyun Woo, Ho-Young Chun, Sang Kyum Kim, Kyu Jin Chung, Ho-Young Lee, Kyeong Lee, Guanghai Jin, Min-Kyun Na, Nam Chul Ha, Clea Bárcena, José M P Freije, Carlos López-Otín, Gyu Yong Song, Bum-Joon Park
Hutchinson-Gilford progeria syndrome (HGPS) is a rare autosomal dominant genetic disease that is caused by a silent mutation of the LMNA gene encoding lamins A and C (lamin A/C). The G608G mutation generates a more accessible splicing donor site than does WT and produces an alternatively spliced product of LMNA called progerin, which is also expressed in normal aged cells. In this study, we determined that progerin binds directly to lamin A/C and induces profound nuclear aberrations. Given this observation, we performed a random screening of a chemical library and identified 3 compounds (JH1, JH4, and JH13) that efficiently block progerin-lamin A/C binding...
October 3, 2016: Journal of Clinical Investigation
Waleed Brinjikji, Vance T Lehman, John Huston, M Hassan Murad, Giuseppe Lanzino, Harry J Cloft, David F Kallmes
BACKGROUND AND PURPOSE: The purpose of this systematic review and meta-analysis was to determine whether carotid stenting patients with intraplaque hemorrhage (IPH) identified on preoperative MRI were more likely to suffer perioperative ischemic complications compared with patients without IPH. METHODS: We conducted a comprehensive literature search of studies published between January 1, 2005 and December 31, 2015 reporting perioperative outcomes of carotid stenting among patients with and without IPH on hemorrhage sensitive carotid MRI sequences...
August 18, 2016: Journal of Neurointerventional Surgery
Trevor J Orchard, Jye-Yu C Backlund, Tina Costacou, Patricia Cleary, Maria Lopes-Virella, Andrew P Levy, John M Lachin
AIMS/HYPOTHESIS: Haptoglobin(Hp) 2-2 genotype has been shown to increase coronary artery disease (CAD) risk in numerous type 2 diabetes studies but in only one type 1 diabetes cohort. We assessed the association of Hp2-2 with incident CAD over 26years of follow-up in 1303 Caucasian participants of the Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications (DCCT/EDIC) study. METHODS: DCCT randomized volunteers with type 1 diabetes to intensive versus conventional therapy within two cohorts: 'primary prevention' with 1-5years diabetes duration and 'secondary intervention' with 1-15years diabetes duration and early retinopathy, with or without albuminuria, but no advanced complications...
November 2016: Journal of Diabetes and its Complications
Beth Han, Wilson M Compton, Ramin Mojtabai, Lisa Colpe, Arthur Hughes
OBJECTIVE: This study examined trends in the 12-month prevalence of receiving mental health treatments among adults 18 years or older and among different generational cohorts in the United States between 2008 and 2013. METHODS: We examined data from 274,900 persons 18 years or older who participated in the 2008-2013 National Surveys on Drug Use and Health (then linked to the 2011-2014 Area Health Resources Files at the county level). Multivariable logistic regressions were applied to assess trends in the model-adjusted prevalence of receiving mental health treatments...
August 2, 2016: Journal of Clinical Psychiatry
Taewon Jin, Min Jeong Kim, Won Il Heo, Kui Young Park, Sun Young Choi, Mi-Kyung Lee, Seung-Phil Hong, Seong-Jin Kim, Myung Im, Nam Ju Moon, Seong Jun Seo
Stress-induced premature senescence or aging causes dysfunction in the human somatic system. Adiponectin (Acrp30) plays a role in functional recovery, especially with adenosine 3',5'-monophosphate (AMP)-activated protein kinase (AMPK) and silent mating type information regulation 2 homolog 1 (SIRT1). Acrp30 stimulation reduced the premature senescence positive ratio induced by hydrogen peroxide (H2O2) and restituted human β-defensin 2 (hBD-2) levels in senescent keratinocytes. Acrp30 recovered AMPK activity in senescent keratinocytes and increased SIRT1 deacetylation activity...
September 2, 2016: Biochemical and Biophysical Research Communications
Peter P Swoboda, Adam K McDiarmid, Bara Erhayiem, Philip Haaf, Ananth Kidambi, Graham J Fent, Laura E Dobson, Tarique A Musa, Pankaj Garg, Graham R Law, Mark T Kearney, Julian H Barth, Ramzi Ajjan, John P Greenwood, Sven Plein
OBJECTIVE: Silent myocardial infarction (MI) is a prevalent finding in patients with type 2 diabetes and is associated with significant mortality and morbidity. Late gadolinium enhancement (LGE) by cardiovascular magnetic resonance (CMR) is the most validated technique for detection of silent MI, but is time-consuming, costly, and requires administration of intravenous contrast. We therefore planned to develop a simple and low-cost population screening tool to identify those at highest risk of silent MI validated against the CMR reference standard...
September 2016: Journal of Clinical Endocrinology and Metabolism
M L Nickerson, N Witte, K M Im, S Turan, C Owens, K Misner, S X Tsang, Z Cai, S Wu, M Dean, J C Costello, D Theodorescu
The utility of tumor-derived cell lines is dependent on their ability to recapitulate underlying genomic aberrations and primary tumor biology. Here, we sequenced the exomes of 25 bladder cancer (BCa) cell lines and compared mutations, copy number alterations (CNAs), gene expression and drug response to BCa patient profiles in The Cancer Genome Atlas (TCGA). We observed a mutation pattern associated with altered CpGs and APOBEC-family cytosine deaminases similar to mutation signatures derived from somatic alterations in muscle-invasive (MI) primary tumors, highlighting a major mechanism(s) contributing to cancer-associated alterations in the BCa cell line exomes...
June 6, 2016: Oncogene
Eliel Nham, Sung Mok Kim, Sang-Chol Lee, Sung-A Chang, Jidong Sung, Soo Jin Cho, Shin Yi Jang, Yeon Hyeon Choe
The purposes of this study were to evaluate the relationship between risk factors for cardiovascular disease (CVD) and cardiac mass and function on cardiac magnetic resonance imaging (MRI), and to investigate possible risk factors for silent myocardial infarction (SMI) in an asymptomatic Asian population. We included 647 asymptomatic subjects (485 males, mean age 54.8 ± 6.7 years; 162 females, mean age 55.2 ± 7.6 years) who underwent 1.5-T cardiac MRI during a health checkup. The association between biventricular functional parameters as evaluated on MRI and CVD risk factors was examined using multivariable regression and analysis of variance...
June 2016: International Journal of Cardiovascular Imaging
Zhu-Ming Zhang, Pentti M Rautaharju, Ronald J Prineas, Carlos J Rodriguez, Laura Loehr, Wayne D Rosamond, Dalane Kitzman, David Couper, Elsayed Z Soliman
BACKGROUND: Race and sex differences in silent myocardial infarction (SMI) are not well established. METHODS AND RESULTS: The analysis included 9498 participants from the Atherosclerosis Risk in Communities (ARIC) study who were free of cardiovascular disease at baseline (visit 1, 1987-1989). Incident SMI was defined as ECG evidence of MI without clinically documented MI (CMI) after the baseline until ARIC visit 4 (1996-1998). Coronary heart disease and all-cause deaths were ascertained starting from ARIC visit 4 until 2010...
May 31, 2016: Circulation
Jiayan Lei, Fengxi Zhu, Yi Zhang, Lixiao Duan, Han Lei, Wei Huang
OBJECTIVE: A high mortality rate occurs with silent myocardial infarction (MI), particularly in aging and diabetic populations due to defects in the transient receptor potential vanilloid (TRPV1)-positive sensory nerve function. We have previously shown that TRPV1 deficiency markedly enhances post-MI inflammation and remodeling. However, the mechanisms remain unknown. The objective of this study was to clarify whether calcitonin gene-related peptide (CGRP) release was associated with the protective role of TRPV1 against postmyocardial inflammation and apoptosis...
2016: Cardiology
Huseyin Goksuluk, Sadi Gulec, Ozgur Ulas Ozcan, Menekse Gerede, Veysel Kutay Vurgun, Nil Ozyuncu, Cetin Erol
Increased plasma levels of neuron-specific enolase (NSE) are related to damage of neurons and neuroendocrine cells. We aimed to investigate elevation of NSE after elective percutaneous coronary intervention (PCI) on the prediction of silent cerebral infarct (SCI). Study population consisted of 2 groups of patients. Group 1 included 92 consecutive patients with normal coronary angiograms, whereas group 2 consisted of 89 patients who underwent elective coronary stenting. NSE levels were studied before and 12 hours after the procedure...
June 15, 2016: American Journal of Cardiology
(no author information available yet)
Risk factors for cardiovascular disease (CVD) are well-established in type 2 but not type 1 diabetes (T1DM). We assessed risk factors in the long-term (mean 27 years) follow-up of the Diabetes Control and Complications Trial (DCCT) cohort with T1DM. Cox proportional hazards multivariate models assessed the association of traditional and novel risk factors, including HbA1c, with major atherosclerotic cardiovascular events (MACE) (fatal or nonfatal myocardial infarction [MI] or stroke) and any-CVD (MACE plus confirmed angina, silent MI, revascularization, or congestive heart failure)...
May 2016: Diabetes
Jang Soo Han, So Dug Lim, Won Hyeok Choi, Sung Chul Hong, Jung Hee Park, Eugene Park, Mi Jin Hong, Cho I Lee, Jung Hwan Park, Jong Ho Lee, Jong Oh Song, Young Il Jo
Immunoglobulin A (IgA) nephropathy associated with cirrhosis is the most common form of secondary IgA nephropathy (IgAN). Cirrhosis-related IgAN is usually clinically silent with a rare occurrence of gross hematuria, unlike in cases of idiopathic IgAN. Especially, acute tubular necrosis (ATN) associated with gross hematuria is very rare in cirrhosis-related IgAN, although acute renal failure is a frequently reported complication in advanced cirrhosis. Herein, we report an unusual case of ATN requiring renal replacement therapy, associated with gross hematuria in a patient with nonalcoholic, hepatitis B virus-associated cirrhosis...
March 2013: Kidney Research and Clinical Practice
Liming Yu, Qing Li, Bo Yu, Yang Yang, Zhenxiao Jin, Weixun Duan, Guolong Zhao, Mengen Zhai, Lijun Liu, Dinghua Yi, Min Chen, Shiqiang Yu
Berberine (BBR) exerts potential protective effect against myocardial ischemia/reperfusion (MI/R) injury. Activation of silent information regulator 1 (SIRT1) signaling attenuates MI/R injury by reducing oxidative damage and inflammation response. This study investigated the antioxidative and anti-inflammatory effects of BBR treatment in MI/R condition and elucidated its potential mechanisms. Sprague-Dawley rats were treated with BBR in the absence or presence of the SIRT1 inhibitor sirtinol (Stnl) and then subjected to MI/R injury...
2016: Oxidative Medicine and Cellular Longevity
Emma Heeley, Laurent Billot, Craig S Anderson, Nick A Antic, Bruce Neal, R Doug McEvoy
RATIONALE: Obstructive sleep apnea (OSA) is associated with increased risk of cardiovascular disease. Continuous positive airway pressure (CPAP) delivered via a nasal mask during sleep immediately alleviates obstructive apneas and improves sleep quality and daytime somnolence. However, there is uncertainty as to whether such treatment can modify CV risk and disease. AIMS: The Sleep Apnea Cardiovascular Endpoints (SAVE) study aims to determine whether CPAP on top of best medical care compared to best medical care alone can reduce the risk of serious CV events in patients with co-morbid OSA and established CV disease...
January 2016: International Journal of Stroke: Official Journal of the International Stroke Society
Hamid Abbasi, Ali Abbasi
BACKGROUND CONTEXT:  Lower back pain is one of the most prevalent and expensive health conditions in the Western world. The standard treatment, interbody fusion, is an invasive procedure that requires the stripping of muscles and soft tissue, leading to surgical morbidity. Current minimally invasive (MI) spinal fusions are technically demanding and suffer from technical limitations. PURPOSE: Oblique lumbar lateral interbody fusion (OLLIF) is a new technique for fusion of the lumbar spine that overcomes these complications...
2015: Curēus
Dong Han, Wei Huang, Xiang Li, Lei Gao, Tao Su, Xiujuan Li, Sai Ma, Tong Liu, Congye Li, Jiangwei Chen, Erhe Gao, Feng Cao
Mesenchymal stem cells (MSCs)-based therapy provides a promising therapy for the ischemic heart disease (IHD). However, engrafted MSCs are subjected to acute cell death in the ischemic microenvironment, characterized by excessive inflammation and oxidative stress in the host's infarcted myocardium. Melatonin, an indole, which is produced by many organs including pineal gland, has been shown to protect bone marrow MSCs against apoptosis although the mechanism of action remains elusive. Using a murine model of myocardial infarction (MI), this study was designed to evaluate the impact of melatonin on adipose-derived mesenchymal stem cells (AD-MSCs)-based therapy for MI and the underlying mechanism involved with a focus on silent information regulator 1(SIRT1) signaling...
March 2016: Journal of Pineal Research
T J O'Leary, M G Morris, J Collett, K Howells
The development of fatigue after non-exhaustive and exhaustive exercise eliciting differing metabolic demands is poorly understood. Sixteen active males completed five cycling trials. The first trial established the lactate threshold (LT) and maximal oxygen uptake (VO2max ). Two of the remaining trials were completed at a severe intensity (halfway between LT and VO2max , SI) and two at a moderate intensity (90% LT, MI). Each trial involved two non-exhaustive bouts matched for work between intensities before cycling to exhaustion...
November 26, 2015: Scandinavian Journal of Medicine & Science in Sports
Jonatas Zeni Klafke, Fernando Garcez Porto, Amanda Spring de Almeida, Mariana Migliorini Parisi, Gabriela Elisa Hirsch, Gabriela Trevisan, Paulo Ricardo Nazário Viecili
Cardiovascular diseases (CVD) are considered the leading cause of morbidity and mortality from chronic diseases in the world. In addition, about 20% of first and recurrent acute myocardial infarctions (MI) are silent. In this context, subclinical atherosclerosis culminates in evident CVD, through the evolution of early risk factors such as hypercholesterolemia, hypertriglyceridemia and others. The main problem in CVD is related to the long-time between the start of the subclinical atherosclerosis and the manifestation of the disease...
2016: Current Pharmaceutical Design
R B Grobben, J E P Vrijenhoek, H M Nathoe, H M Den Ruijter, J A R van Waes, L M Peelen, W A van Klei, G J de Borst
OBJECTIVE: Myocardial infarction (MI) is a frequent complication of carotid endarterectomy (CEA), yet most events are silent. Routine post-operative monitoring of cardiac troponin was implemented to facilitate timely recognition of MI and stratify high risk patients. The aim was to evaluate the incidence of troponin elevation after CEA and its association with adverse cardiovascular events. METHODS: This analysis included patients ≥60 years old who underwent CEA, whose troponin-I levels were routinely monitored post-operatively and were included in a cohort study that assessed clinical outcomes...
April 2016: European Journal of Vascular and Endovascular Surgery
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