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Theodore Pipikos, Alkistis Kapelouzou, Diamantis I Tsilimigras, Yannis Fostinis, Marina Pipikou, Athanassios Theodorakos, Antonis N Pavlidis, Christos Kontogiannis, Dennis V Cokkinos, Maria Koutelou
BACKGROUND: Acute myocardial infarction (AMI) is considered a major cause of death and disability. Myocardial perfusion scintigraphy (MPS) as a non-invasive diagnostic imaging procedure and certain biomarkers associated with myocardial ischemia (ISCH), such as ischemia-modified albumin (IMA), neuropeptide Y (NPY), N-terminal pro b-type natriuretic peptide (NT-proBNP), and high-sensitivity troponin T (hsTnT) could probably aid in the detection of myocardial infarction. METHODS: Between December 2011 and June 2012, we prospectively analyzed patients who underwent a MPS study with the clinical question of myocardial ISCH...
January 29, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
Christian T Ulrich, Christian Fung, Eike Piechowiak, Jan Gralla, Andreas Raabe, Jürgen Beck
Idiopathic spinal cord herniation (ISCH) through an anterior dural defect is rare and the cause is uncertain. Recently, through interpreting imaging studies, disc herniation was proposed to be a major cause for ISCH. We describe the case of a 50-year-old woman with progressive myelopathy who was diagnosed with a thoracic spinal cord herniation. Microsurgical exploration revealed an anterior vertical dural defect and a small concomitant disc herniation, occult on the preoperative imaging, which caused the dural defect and led to ISCH...
March 2018: Acta Neurochirurgica
Riya Ganguly, Devin Hasanally, Aleksandra Stamenkovic, Thane G Maddaford, Rakesh Chaudhary, Grant N Pierce, Amir Ravandi
The omega-3 fatty acid, alpha linolenic acid (ALA) found in plant-derived foods induces significant cardiovascular benefits when ingested. ALA may be cardioprotective during ischemia; however, the mechanism(s) responsible for this effect is unknown. Isolated adult rat cardiomyocytes were exposed to medium containing ALA for 24 h and then exposed to non-ischemic (control), simulated ischemia (ISCH), or simulated ischemia/reperfusion (IR) conditions. Cardiomyocyte phospholipids were extracted and analyzed by an HPLC/electrospray ionization tandem mass spectrometry system...
January 2018: Molecular and Cellular Biochemistry
Geesien S A Boersema, Sandra Vennix, Zhouqiao Wu, Maaike Te Lintel Hekkert, Dirk-Jan G M Duncker, King H Lam, Anand G Menon, Gert-Jan Kleinrensink, Johan F Lange
BACKGROUND: Previous experimental studies on cyanoacrylate (CA) glue for the prevention of colorectal anastomotic leakage (AL) have shown promising results. The aim of this study was to investigate the effect of CA in prevention of leakage in a porcine model of ischemic colorectal AL. METHODS: Twenty-four animals were divided into four groups of six: (1)ischemic anastomosis with sufficient suture (ISCH), (2)ischemic anastomosis with sufficient suture and CA reinforcement (CA-ISCH), (3)ischemic anastomosis with insufficient suture (ISCH-AI), and (4)ischemic anastomosis with insufficient suture and CA reinforcement (CA-ISCH-AI)...
September 2017: Journal of Surgical Research
Satoru Shimizu, Yosuke Kobayashi, Hidehiro Oka, Toshihiro Kumabe
INTRODUCTION: We present a patient with idiopathic spinal cord herniation (ISCH) whose dura mater was histopathologically examined to elucidate its pathogenesis. CASE REPORT: A 33-year-old previously healthy man presented with progressive walking difficulty, spasticity of the right lower leg, and hyperesthesia below the right chest. Neuroimaging revealed right ventral displacement of the spinal cord at T5-6. The diagnosis was ISCH and he underwent release of the herniation from the ventral dural opening...
June 7, 2017: European Spine Journal
Hiroaki Nakashima, Shiro Imagama, Hideki Yagi, Fumihiko Kato, Tokumi Kanemura, Koji Sato, Noriaki Kawakami, Mitsuhiro Kamiya, Hisatake Yoshihara, Kenyu Ito, Yukihiro Matsuyama, Yoshihiro Nishida, Naoki Ishiguro
STUDY DESIGN: A retrospective, multicenter, case-controlled study. OBJECTIVE: The aim of this study was to investigate the clinical and radiographical differences between thoracic idiopathic spinal cord herniation (ISCH) and spinal arachnoid cyst (SAC). SUMMARY OF BACKGROUND DATA: ISCH and SAC are relatively rare diseases. Preoperative misdiagnose was frequently reported in both; however, these clinical and radiographical differences remain unclear...
August 15, 2017: Spine
Abdullah Alkhamees, Francois Proust
Idiopathic spinal cord herniation (ISCH) is a rare cause of progressive spinal myelopathy, which frequently presents as Brown-Sequard syndrome. A 50 year old woman consulted for difficulty in walking. On examination, the patient reported sensory deficit of temperature on the left side, associated with diminished anal sensitivity. Nine months before consultation, a walking disorder began disturbing the activities of everyday life. A single case report with surgical treatment outcome. Idiopathic spinal cord herniation is a potentially treatable condition, which should be diagnosed early and treated...
October 2016: International Journal of Health Sciences
Pedro David Delgado-López, Cecilia Gil-Polo, Vicente Martín-Velasco, Javier Martín-Alonso, Ana María Galacho-Harriero, Elena Araus-Galdós
Idiopathic spinal cord herniation (ISCH) is a relatively rare and frequently misdiagnosed condition. It preferentially affects women and causes progressive thoracic myelopathy that presents as a Brown-Séquard syndrome or as spastic paraparesis. Although its etiology and pathogenesis are controversial, ISCH is characterized by the presence of an anterior dural defect that allows the incarceration of a segment of the cord. Typically, a C-shaped ventral displacement and kinking of the cord are visible on sagittal MRI...
March 2017: Journal of Neurosurgery. Spine
Mahsa Ranji, Mohammad Masoudi Motlagh, Fahimeh Salehpour, Reyhaneh Sepehr, James S Heisner, Ranjan K Dash, Amadou K S Camara
Oxidation of substrates to generate ATP in mitochondria is mediated by redox reactions of NADH and FADH2. Cardiac ischemia and reperfusion (IR) injury compromises mitochondrial oxidative phosphorylation. We hypothesize that IR alters the metabolic heterogeneity of mitochondrial redox state of the heart that is only evident in the 3-D optical cryoimaging of the perfused heart before, during, and after IR. The study involved four groups of hearts: time control (TC: heart perfusion without IR), global ischemia (Isch), global ischemia followed by reperfusion (IR) and TC with PCP (a mitochondrial uncoupler) perfusion...
2016: IEEE Journal of Translational Engineering in Health and Medicine
Shuo-Bin Chen, Ming-Hao Hu, Guo-Cai Liu, Jin Wang, Tian-Miao Ou, Lian-Quan Gu, Zhi-Shu Huang, Jia-Heng Tan
The RNA G-quadruplex is an important secondary structure formed by guanine-rich RNA sequences. However, its folding studies have mainly been studied in vitro. Accurate identification of RNA G-quadruplex formation within a sequence of interest remains difficult in cells. Herein, and based on the guanine-rich sequence in the 5'-UTR of NRAS mRNA, we designed and synthesized the first G-quadruplex-triggered fluorogenic hybridization (GTFH) probe, ISCH-nras1, for the unique visualization of the G-quadruplexes that form in this region...
August 24, 2016: Journal of the American Chemical Society
Luca Pagano, Alia D Servin, Roberto De La Torre-Roche, Arnab Mukherjee, Sanghamitra Majumdar, Joseph Hawthorne, Marta Marmiroli, Elena Maestri, Robert E Marra, Susan M Isch, Om Parkash Dhankher, Jason C White, Nelson Marmiroli
Functional toxicology has enabled the identification of genes involved in conferring tolerance and sensitivity to engineered nanomaterial (ENM) exposure in the model plant Arabidopsis thaliana (L.) Heynh. Several genes were found to be involved in metabolic functions, stress response, transport, protein synthesis, and DNA repair. Consequently, analysis of physiological parameters, metal content (through ICP-MS quantification), and gene expression (by RT-qPCR) of A. thaliana orthologue genes were performed across different plant species of agronomic interest to highlight putative biomarkers of exposure and effect related to ENMs...
July 5, 2016: Environmental Science & Technology
Michael Payer, Dominik Zumsteg, Nicolas De Tribolet, Stephan Wetzel
Idiopathic spinal cord herniation (ISCH) is a rare spinal disease, in which chronic cerebrospinal fluid pulsations push the arachnoid and adjacent thoracic spinal cord region through an antero-lateral dural defect of congenital, post-traumatic, or inflammatory/erosive origin. Symptomatic patients commonly present around the 5th decade of life with slowly progressive myelopathy. Diagnosis relies on high-resolution magnetic resonance imaging. Stable mild cases may be observed, whereas in progressive symptomatic situations, surgical spinal cord reposition and dural defect repair with a dural patch is the preferred treatment...
August 2016: Acta Neurochirurgica
Dilina Rajapakse, Leah Mapara, Sathiyaseelan Maniharan
Idiopathic spinal cord herniation (ISCH) is a recognised rare cause of progressive and potentially curable myelopathy. Around 170 cases have been described in the literature, all to be found between the T2 and T8 vertebrae. We report a case of ISCH in the cervical region. A 23-year-old man with no history of trauma presented with a 6-year history of bilateral mild resting hand tremor and left scapular pain radiating to the left arm for a duration of 8 months. Nerve conduction studies showed some denervation changes of the upper limbs and bulbar regions...
May 17, 2016: BMJ Case Reports
Yang Xu, Renjie Ji, Ruili Wei, Bo Yin, Fangping He, Benyan Luo
BACKGROUND: Inconsistent results have been reported for hyperbaric oxygen therapy (HBO) for acute stroke. We conducted a systematic review and meta-analysis to evaluate the benefit of HBO in animal studies of middle cerebral artery occlusion (MCAO). METHODS: A systematic search of the literature published prior to September 2015 was performed using Embase, Medline (OvidSP), Web of Science and PubMed. Keywords included "hyperoxia" OR "hyperbaric oxygen" OR "HBO" AND "isch(a)emia" OR "focal cerebral ischemia" OR "stroke" OR "infarct" OR "middle cerebral artery occlusion (MCAO)...
2016: PloS One
Mahmood Ghasemi, Mehdi Nematbakhsh, Fatemeh Daneshmand, Maryam Moeini, Ardeshir Talebi
BACKGROUND: Renal ischemia-reperfusion (RIR) is a major cause of renal dysfunction that acts through different mechanisms. We investigated the role of L-Arginine as an endogenous nitric oxide (NO) precursor and NG-nitro-L-Arginine methyl ester (L-NAME) as an NO inhibitor on kidney and liver function in RIR model. MATERIALS AND METHODS: Fifty-eight Wistar rats were randomly assigned to four groups. Groups 1 (sham-operated, n = 13) received a single dose of saline (4 ml/kg, i...
2015: Advanced Biomedical Research
Tamás Baranyai, Csilla Terézia Nagy, Gábor Koncsos, Zsófia Onódi, Melinda Károlyi-Szabó, András Makkos, Zoltán V Varga, Péter Ferdinandy, Zoltán Giricz
BACKGROUND: Remote ischemic perconditioning (RIPerC) has a promising therapeutic insight to improve the prognosis of acute myocardial infarction. Chronic comorbidities such as diabetes are known to interfere with conditioning interventions by modulating cardioprotective signaling pathways, such as e.g., mTOR pathway and autophagy. However, the effect of acute hyperglycemia on RIPerC has not been studied so far. Therefore, here we investigated the effect of acute hyperglycemia on cardioprotection by RIPerC...
November 18, 2015: Cardiovascular Diabetology
Ekwutosi M Okoroh, Sheree L Boulet, Mary G George, W Craig Hooper
INTRODUCTION: No study has examined how the relationship between polycystic ovary syndrome (PCOS) and atherosclerotic cardiovascular diseases (aCVD), of ischemic stroke (ISCH), acute myocardial infarction (AMI), and peripheral vascular disease (PAD), differ in the presence of venous thromboembolism (VTE). MATERIALS AND METHODS: We performed a cross-sectional analysis using Truven Health Analytics MarketScan® Commercial databases from 2004-2011. The association between women aged 18-64 years with and without PCOS, and aCVD was assessed using VTE-stratified multivariable logistic regression models...
December 2015: Thrombosis Research
L F Liu, Z H Qian, Q Qin, M Shi, H Zhang, X M Tao, W P Zhu
We aimed to evaluate the effect of melatonin on myo-cardial cell oncosis in the myocardial ischemia/reperfusion injury rat, and the role of the mitochondrial permeability transition pore (MPTP) therein. Sprague Dawley rats (N = 60) were randomly divided into five groups of 12 rats each: control, ischemia/reperfusion (I/R), melatonin treatment (MT), melatonin treatment + atractyloside (MT+ATR), and atractyloside (ATR). We prepared the myocardial ischemia/reperfusion model by reperfusion after the left anterior descending coronary artery was ligated for 30 min...
2015: Genetics and Molecular Research: GMR
K Ran, Z X Gong, D L Yang, Y T Chang, K M Duan, Y W Ou
This study aimed to investigate the protective effects of delayed morphine preconditioning on myocardial ischemia-reperfusion injury. We randomly divided 30 rabbits into three groups with 10 rab-bits in each group as follows: sham operation group (C group), isch-emia-reperfusion group (I/R group), and morphine pretreatment group (M group). Rabbits in C Group received left coronary without blocking for 160 min. The left descending artery of rabbits in the I/R group was blocked for 40 min and reperfused for 120 min...
2015: Genetics and Molecular Research: GMR
Britton J Carter, Brent D Griffith, Lonni R Schultz, Muwaffak M Abdulhak, Daniel S Newman, Rajan Jain
BACKGROUND CONTEXT: Idiopathic spinal cord herniation (ISCH) is an underrecognized entity that is often underappreciated by the neurosurgery and neuroradiologic communities. This leads to delayed diagnosis, multiple imaging studies, other diagnostic tests, inappropriate surgeries, and repeat office visits. PURPOSE: To evaluate common associations between ISCH and patient demographics/clinical presentation and to analyze the potential for delayed diagnosis. PATIENT SAMPLE: Patient sample included those diagnosed with ISCH on imaging at our institution from June 20, 2005 to December 3, 2012...
September 1, 2015: Spine Journal: Official Journal of the North American Spine Society
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