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https://www.readbyqxmd.com/read/29666101/solitary-cardiac-metastasis-from-primary-oral-squamous-cell-carcinoma-presenting-as-st-elevation-mi
#1
Hiren Patel, Michael Francke, Heather Stahura, Mohammad El-Hajjar, Joshua Schulman-Marcus
Cardiac metastases from oral squamous cell carcinoma (SCC) are rare, especially in the absence of systemic metastasis. We describe a case of a patient presenting with chest pain and ECG abnormalities concerning for ST-elevation myocardial infarction that eventually was found to have an incidental right ventricular mass on chest CT angiogram. Ultimately, she had an intracardiac echocardiography-assisted biopsy diagnosis of isolated cardiac metastasis from primary oral SCC. The extent of the disease precluded any surgical intervention, and the patient subsequently transitioned to hospice care...
April 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29658582/sirt1-nrf2-signalling-pathway-prevents-cognitive-impairment-in-diabetic-rats-through-anti%C3%A2-oxidative-stress-induced-by-mirna%C3%A2-23b%C3%A2-3p-expression
#2
Jinhua Han, Xiaoning Liu, Yingzhi Li, Jun Zhang, Haichi Yu
In the present study the exact roles and mechanisms underlying the effect of miRNA‑23b‑3p on the cognitive impairment of diabetic rats were investigated. The in vivo model of diabetes was established in Wistar rats via a single injection of streptozotocin (STZ). Cognitive function was evaluated using a Morris water maze test. Oxidative stress was measured using ELISA kits, and the protein expression levels of B‑cell lymphoma 2‑associated X protein, silent information regulator 1 (SIRT1), nuclear factor erythroid 2‑related factor 2 (Nrf2) and GAPDH were measured by western blot analysis...
April 12, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29566363/cardiac-specific-overexpression-of-silent-information-regulator-1-protects-against-heart-and-kidney-deterioration-in-cardiorenal-syndrome-via-inhibition-of-endoplasmic-reticulum-stress
#3
Dong Huang, Mei-Ling Yan, Kan-Kai Chen, Rong Sun, Zhi-Feng Dong, Peng-Long Wu, Shuai Li, Guang-Shuo Zhu, Shi-Xin Ma, Ye-Sheng Pan, Jing-Wei Pan, Wei Zhu, Jun Xu, Meng Wei, Jing-Bo Li
BACKGROUND/AIMS: Increased endoplasmic reticulum (ER) stress contributes to development of cardiorenal syndrome (CRS), and Silent Information Regulator 1 (SIRT1), a class III histone deacetylase, may have protective effects on heart and renal disease, by reducing ER stress. We aimed to determine if SIRT1 alleviates CRS through ER stress reduction. METHODS: Wild type mice (n=37), mice with cardiac-specific SIRT1 knockout (n=29), or overexpression (n=29), and corresponding controls, were randomized into four groups: sham MI (myocardial infarction) +sham STNx (subtotal nephrectomy); MI+sham STNx; sham MI+STNx; and MI+STNx...
March 21, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29374923/-effects-of-microrna-34a-on-regulating-silent-information-regulator-1-and-influence-of-the-factor-on-myocardial-damage-of-rats-with-severe-burns-at-early-stage
#4
X Z Bai, T He, J L Zhang, Y Liu, M Y Cao, J N Zhang, W X Cai, Y H Jia, J H Shi, L L Su, D H Hu
Objective: To explore the effects of microRNA-34a on regulating silent information regulator 1 (SIRT1) and influence of SIRT1 on myocardial damage of rats with severe burns at early stage. Methods: (1) Twenty-four Sprague-Dawley (SD) rats were divided into sham injury (SI) group, simple burns (SB) group and SIRT1 agonist (SA) group according to the random number table (the same grouping method below), with 8 rats in each group. Rats in groups SB and SA were inflicted with 30% total body surface area full-thickness scald (hereinafter referred to as burns) on the back, and rats in group SI were sham injuried on the back...
January 20, 2018: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/29301615/silent-myocardial-infarction-and-long-term-risk-of-heart-failure-the-aric-study
#5
Waqas T Qureshi, Zhu-Ming Zhang, Patricia P Chang, Wayne D Rosamond, Dalane W Kitzman, Lynne E Wagenknecht, Elsayed Z Soliman
BACKGROUND: Although silent myocardial infarction (SMI) accounts for about one-half of the total number of myocardial infarctions (MIs), the risk of heart failure (HF) among patients with SMI is not well established. OBJECTIVES: The purpose of this study was to examine the association of SMI and clinically manifested myocardial infarction (CMI) with HF, as compared with patients with no MI. METHODS: This analysis included 9,243 participants from the ARIC (Atherosclerosis Risk In Communities) study who were free of cardiovascular disease at baseline (ARIC visit 1: 1987 to 1989)...
January 2, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29175662/comorbidities-in-relation-to-fatality-of-first-myocardial-infarction
#6
Hedley Knewjen Quintana, Imre Janszky, Alkass Kanar, Bruna Gigante, Henrik Druid, Anders Ahlbom, Ulf de Faire, Johan Hallqvist, Karin Leander
INTRODUCTION: Present knowledge concerning potential associations between comorbidities and the fatality of a first myocardial infarction (MI) is limited. AIM: To identify comorbidities in 45-70-year-old individuals who suffered a first MI and died within 7 days in Stockholm County from 1992-1994. In addition, to assess how each of the comorbidities identified, as well as the number of hospitalizations during the 10-year period prior to the MI, was associated with MI fatality...
January 2018: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/29035435/clinical-and-angiographic-outcomes-of-the-first-korean-made-sirolimus-eluting-coronary-stent-with-abluminal-bioresorbable-polymer
#7
Hyoung Mo Yang, Kyoung Woo Seo, Junghan Yoon, Hyo Soo Kim, Kiyuk Chang, Hong Seok Lim, Byoung Joo Choi, So Yeon Choi, Myeong Ho Yoon, Seung Hwan Lee, Sung Gyun Ahn, Young Jin Youn, Jun Won Lee, Bon Kwon Koo, Kyung Woo Park, Han Mo Yang, Jung Kyu Han, Ki Bae Seung, Wook Sung Chung, Pum Joon Kim, Yoon Seok Koh, Hun Jun Park, Seung Jea Tahk
BACKGROUND AND OBJECTIVES: This trial evaluated the safety and efficacy of the Genoss drug-eluting coronary stent. METHODS: This study was a prospective, multicenter, randomized trial with a 1:1 ratio of Genoss drug-eluting stent (DES)™ and Promus Element™. Inclusion criteria were the presence of stable angina, unstable angina, or silent ischemia. Angiographic inclusion criteria were de novo coronary stenotic lesion with diameter stenosis >50%, reference vessel diameter of 2...
November 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28958755/prognostic-value-of-silent-myocardial-infarction-in-patients-with-chronic-kidney-disease-being-evaluated-for-kidney-transplantation
#8
Ayman A Farag, Wael AlJaroudi, John Neill, Harish Doppalapudi, Vineeta Kumar, Dana Rizk, Ami E Iskandrian, Fadi G Hage
BACKGROUND: Patients with advanced chronic kidney disease (CKD) have increased risk of myocardial infarction (MI). Silent MIs (SMIs) are common in CKD patients and carry increased mortality risk. The prevalence and prognostic value of SMI in advanced CKD has not been evaluated. METHODS: We identified consecutive patients with advanced CKD who were evaluated for renal transplantation at the University of Alabama at Birmingham between June 2004 and January 2006. Clinical MI (CMI) was determined by review of medical records...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28950710/microrna-and-diabetic-complications-a-clinical-perspective
#9
Baoqi Fan, Andrea On Yan Luk, Juliana Chung Ngor Chan, Ronald Ching Wan Ma
SIGNIFICANCE: The rising global prevalence of diabetes and its debilitating complications give rise to significant disability and premature mortality. Due to the silent nature of diabetes and its vascular complications, and limitations in current methods for detection, there is a need for novel biomarkers for early detection and prognosis. Recent Advances: Metabolic memory and epigenetic factors are important in the pathogenesis of diabetic complications and interact with genetic variants, metabolic factors, and clinical risk factors...
December 1, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28718763/a-theory-of-working-memory-without-consciousness-or-sustained-activity
#10
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
#11
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
#12
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...
October 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
#13
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...
September 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
#14
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
#15
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
#16
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...
March 6, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28121469/savor-timi-to-sustain-6-a-critical-comparison-of-cardiovascular-outcome-trials-of-antidiabetic-drugs
#17
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
#18
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...
May 2017: 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
#19
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
#20
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
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