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Silent MI

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https://www.readbyqxmd.com/read/28718763/a-theory-of-working-memory-without-consciousness-or-sustained-activity
#1
Darinka Trübutschek, Sébastien Marti, Andrés Ojeda, Jean-Rémi King, Yuanyuan Mi, Misha Tsodyks, Stanislas Dehaene
Working memory and conscious perception are thought to share similar brain mechanisms, yet recent reports of non-conscious working memory challenge this view. Combining visual masking with magnetoencephalography, we investigate the reality of non-conscious working memory and dissect its neural mechanisms. In a spatial delayed-response task, participants reported the location of a subjectively unseen target above chance-level after several seconds. Conscious perception and conscious working memory were characterized by similar signatures: a sustained desynchronization in the alpha/beta band over frontal cortex, and a decodable representation of target location in posterior sensors...
July 18, 2017: ELife
https://www.readbyqxmd.com/read/28551389/mutation-analysis-of-ctnnb1-gene-and-the-ras-pathway-genes-kras-nras-braf-and-pik3ca-in-eyelid-sebaceous-carcinomas
#2
Mi Jung Kwon, Eun Sook Nam, Seong Jin Cho, Hye-Rim Park, Soo Kee Min, Jinwon Seo, Ji-Young Choe
Sebaceous carcinoma (SC) represents a rare, aggressive eyelid malignancy with poor prognosis and is a possible component of Muir-Torre syndrome. However, genetic features as driver mutations or potential therapeutic targets are not fully elucidated. Recent a few studies have shown that SCs have concurrently multiple mutations including RAS/RAF/MAPK and PI3K/Akt pathways via next-generation sequencing in western population. Because we recently demonstrated absence of KRAS mutations in Korean eyelid SCs, we extended our previous study to the analysis of NRAS, BRAF, PIK3CA, and CTNNB1 mutations, and the examination of related protein expressions in 15 eyelid SCs...
June 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28523343/hh-signaling-in-regeneration-of-the-ischemic-heart
#3
REVIEW
Marina Dunaeva, Johannes Waltenberger
Myocardial infarction (MI) is caused by the occlusion of a coronary artery due to underlying atherosclerosis complicated by localized thrombosis. The blockage of blood flow leads to cardiomyocyte (CM) death in the infarcted area. Adult mammalian cardiomyocytes have little capacity to proliferate in response to injury; however, some pathways active during embryogenesis and silent during adult life are recruited in response to tissue injury. One such example is hedgehog (Hh) signaling. Hh is involved in the embryonic development of the heart and coronary vascular system...
May 18, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28515002/electrocardiographic-qrs-t-angle-and-the-risk-of-incident-silent-myocardial-infarction-in-the-atherosclerosis-risk-in-communities-study
#4
Zhu-Ming Zhang, Pentti M Rautaharju, Ronald J Prineas, Larisa Tereshchenko, Elsayed Z Soliman
BACKGROUND: Silent myocardial infarction (SMI) accounts for about half of the total number of MIs, and is associated with poor prognosis as is clinically documented MI (CMI). The electrocardiographic (ECG) spatial QRS/T angle has been a strong predictor of cardiovascular outcomes. Whether spatial QRS/T angle also is predictive of SMI, and the easy-to-obtain frontal QRS/T angle will show similar association are currently unknown. METHODS: We examined the association between the spatial and frontal QRS/T angles, separately, with incident SMI among 9498 participants (mean age 54years, 57% women, and 20% African-American), who were free of cardiovascular disease at baseline (visit 1, 1987-1989) from the Atherosclerosis Risk in Communities (ARIC) study...
May 4, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28455824/diallyl-trisulfide-ameliorates-myocardial-ischemia-reperfusion-injury-by-reducing-oxidative-stress-and-endoplasmic-reticulum-stress-mediated-apoptosis-in-type-1-diabetic-rats-role-of-sirt1-activation
#5
Liming Yu, Shu Li, Xinlong Tang, Zhi Li, Jian Zhang, Xiaodong Xue, Jinsong Han, Yu Liu, Yuji Zhang, Yong Zhang, Yinli Xu, Yang Yang, Huishan Wang
Diallyl trisulfide (DATS) protects against apoptosis during myocardial ischemia-reperfusion (MI/R) injury in diabetic state, although the underlying mechanisms remain poorly defined. Previously, we and others demonstrated that silent information regulator 1 (SIRT1) activation inhibited oxidative stress and endoplasmic reticulum (ER) stress during MI/R injury. We hypothesize that DATS reduces diabetic MI/R injury by activating SIRT1 signaling. Streptozotocin (STZ)-induced type 1 diabetic rats were subjected to MI/R surgery with or without perioperative administration of DATS (40 mg/kg)...
July 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28350812/sports-related-sudden-cardiac-deaths-in-the-young-population-of-switzerland
#6
Babken Asatryan, Cristina Vital, Christoph Kellerhals, Argelia Medeiros-Domingo, Christoph Gräni, Lukas D Trachsel, Christian M Schmied, Ardan M Saguner, Prisca Eser, David Herzig, Stephan Bolliger, Katarzyna Michaud, Matthias Wilhelm
BACKGROUND: In Switzerland, ECG screening was first recommended for national squad athletes in 1998. Since 2001 it has become mandatory in selected high-risk professional sports. Its impact on the rates of sports-related sudden cardiac death (SCD) is unknown. OBJECTIVE: We aimed to study the incidence, causes and time trends of sports-related SCD in comparison to SCD unrelated to exercise in Switzerland. METHODS: We reviewed all forensic reports of SCDs of the German-speaking region of Switzerland in the age group of 10 to 39 years, occurring between 1999 and 2010...
2017: PloS One
https://www.readbyqxmd.com/read/28199124/tempo-spatial-activation-of-sequential-quadruple-stimuli-for-high-gene-expression-of-polymeric-gene-nanocomplexes
#7
Hana Cho, Young-Woo Cho, Sun-Woong Kang, Mi-Kyoung Kwak, Kang Moo Huh, You Han Bae, Han Chang Kang
The clinical application of intracellular gene delivery via nanosized carriers is hindered by intracellular multistep barriers that limit high levels of gene expression. To solve these issues, four different intracellular or external stimuli that can efficiently activate a gene carrier, a gene, or a photosensitizer (pheophorbide A [PhA]) were assessed in this study. The designed nanosized polymeric gene complexes were composed of PhA-loaded thiol-degradable polycation (PhA@RPC) and cytomegalovirus (CMV) promoter-equipped pDNA...
February 23, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28121469/savor-timi-to-sustain-6-a-critical-comparison-of-cardiovascular-outcome-trials-of-antidiabetic-drugs
#8
REVIEW
Awadhesh Kumar Singh, Ritu Singh
Since the inception of mandatory cardiovascular (CV) safety outcome trial (CVOT) promulgated by US FDA in 2008, seven trials have so far been published with three different classes of antidiabetic drugs in type 2 diabetes mellitus (T2DM). This mini-review aims to critically analyse these CVOTs in terms of different outcomes achieved. Areas covered: An electronic search pertaining to the subject was conducted till September 2016. The three CVOT conducted with saxagliptin, alogliptin and sitagliptin respectively, found them to be CV-neutral...
April 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/27807368/expression-of-the-fetal-hematopoiesis-regulator-fev-indicates-leukemias-of-prenatal-origin
#9
T-H Liu, Y-J Tang, Y Huang, L Wang, X-L Guo, J-Q Mi, L-G Liu, H Zhu, Y Zhang, L Chen, X Liu, L-H Zhang, Q-J Ye, B-S Li, J-Y Tang, A Ford, T Enver, F Liu, G-Q Chen, D-L Hong
The origin of cancers is associated with etiology as well as therapeutics. Several studies reveal that malignancies in children can originate in utero. However, a diagnostic approach to distinguish between cancers initiated pre- or postnatally is absent. Here we identified a transcriptional factor FEV (fifth Ewing variant) that was expressed in fetal hematopoietic cells and became silent after birth. We characterized that FEV was essential for the self-renewal of hematopoietic stem cells (HSCs). We next found that FEV was expressed in most infant leukemia samples, but seldom in adult samples, in accord with the known prenatal origins of the former...
December 9, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27617860/interruption-of-progerin-lamin-a-c-binding-ameliorates-hutchinson-gilford-progeria-syndrome-phenotype
#10
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
https://www.readbyqxmd.com/read/27540090/the-association-between-carotid-intraplaque-hemorrhage-and-outcomes-of-carotid-stenting-a-systematic-review-and-meta-analysis
#11
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...
September 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27539884/haptoglobin-2-2-genotype-and-the-risk-of-coronary-artery-disease-in-the-diabetes-control-and-complications-trial-epidemiology-of-diabetes-interventions-and-complications-study-dcct-edic
#12
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
https://www.readbyqxmd.com/read/27486895/trends-in-receipt-of-mental-health-treatments-among-adults-in-the-united-states-2008-2013
#13
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...
October 2016: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/27349869/adiponectin-corrects-premature-cellular-senescence-and-normalizes-antimicrobial-peptide-levels-in-senescent-keratinocytes
#14
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
https://www.readbyqxmd.com/read/27300573/a-novel-and-practical-screening-tool-for-the-detection-of-silent-myocardial-infarction-in-patients-with-type-2-diabetes
#15
MULTICENTER STUDY
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
https://www.readbyqxmd.com/read/27270441/molecular-analysis-of-urothelial-cancer-cell-lines-for-modeling-tumor-biology-and-drug-response
#16
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...
January 5, 2017: Oncogene
https://www.readbyqxmd.com/read/27209284/association-of-cardiovascular-disease-risk-factors-with-left-ventricular-mass-biventricular-function-and-the-presence-of-silent-myocardial-infarction-on-cardiac-mri-in-an-asymptomatic-population
#17
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
https://www.readbyqxmd.com/read/27185168/race-and-sex-differences-in-the-incidence-and-prognostic-significance-of-silent-myocardial-infarction-in-the-atherosclerosis-risk-in-communities-aric-study
#18
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
https://www.readbyqxmd.com/read/27144592/transient-receptor-potential-vanilloid-subtype-1-inhibits-inflammation-and-apoptosis-via-the-release-of-calcitonin-gene-related-peptide-in-the-heart-after-myocardial-infarction
#19
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
https://www.readbyqxmd.com/read/27134059/usefulness-of-neuron-specific-enolase-to-detect-silent-neuronal-ischemia-after-percutaneous-coronary-intervention
#20
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
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