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Hypoxic ischemic

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https://www.readbyqxmd.com/read/28226873/using-hilbert-huang-transform-to-assess-eeg-slow-wave-activity-during-anesthesia-in-post-cardiac-arrest-patients
#1
Jukka Kortelainen, Eero Vayrynen, Usko Huuskonen, Jouko Laurila, Juha Koskenkari, Janne T Backman, Seppo Alahuhta, Tapio Seppanen, Tero Ala-Kokko, Jukka Kortelainen, Eero Vayrynen, Usko Huuskonen, Jouko Laurila, Juha Koskenkari, Janne T Backman, Seppo Alahuhta, Tapio Seppanen, Tero Ala-Kokko, Eero Vayrynen, Janne T Backman, Jukka Kortelainen, Tapio Seppanen, Jouko Laurila, Usko Huuskonen, Seppo Alahuhta, Tero Ala-Kokko, Juha Koskenkari
Hypoxic ischemic encephalopathy (HIE) is a severe consequence of cardiac arrest (CA) representing a substantial diagnostic challenge. We have recently designed a novel method for the assessment of HIE after CA. The method is based on estimating the severity of the brain injury by analyzing changes in the electroencephalogram (EEG) slow wave activity while the patient is exposed to an anesthetic drug propofol in a controlled manner. In this paper, Hilbert-Huang Transform (HHT) was used to analyze EEG slow wave activity during anesthesia in ten post-CA patients...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226660/identifying-stereotypic-evolving-micro-scale-seizures-sems-in-the-hypoxic-ischemic-eeg-of-the-pre-term-fetal-sheep-with-a-wavelet-type-ii-fuzzy-classifier
#2
Hamid Abbasi, Laura Bennet, Alistair J Gunn, Charles P Unsworth, Hamid Abbasi, Laura Bennet, Alistair J Gunn, Charles P Unsworth, Charles P Unsworth, Laura Bennet, Hamid Abbasi, Alistair J Gunn
Perinatal hypoxic-ischemic encephalopathy (HIE) around the time of birth due to lack of oxygen can lead to debilitating neurological conditions such as epilepsy and cerebral palsy. Experimental data have shown that brain injury evolves over time, but during the first 6-8 hours after HIE the brain has recovered oxidative metabolism in a latent phase, and brain injury is reversible. Treatments such as therapeutic cerebral hypothermia (brain cooling) are effective when started during the latent phase, and continued for several days...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226644/examining-the-effect-of-mgso4-on-sharp-wave-transient-activity-in-the-hypoxic-ischemic-fetal-sheep-model
#3
Meherzad J Lakadia, Hamid Abbasi, Alistair J Gunn, Charles P Unsworth, Laura Bennet, Meherzad J Lakadia, Hamid Abbasi, Alistair J Gunn, Charles P Unsworth, Laura Bennet, Laura Bennet, Hamid Abbasi, Alistair J Gunn, Meherzad J Lakadia, Charles P Unsworth
Hypoxic-ischemic encephalopathy (HIE) due to lack of oxygen is a debilitating disorder experienced by a significant number of preterm infants during birth. Studies show that the brain undergoes different phases of injury following hypoxic insult, but the first 6-8 hours (known as a latent phase) are the key to treatment efficacy. Cerebral hypothermia is one known treatment, and for it to be effective it must be started during the latent phase and continued for several days. In order to determine the effectiveness of treatment it is important to pinpoint the time of insult...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226400/population-pharmacokinetics-and-pharmacodynamic-target-attainment-of-ampicillin-in-neonates-with-hypoxemic-ischemic-encephalopathy-in-the-setting-of-controlled-hypothermia
#4
Jeffrey J Cies, Keri N Fugarolas, Wayne S Moore, Robert W Mason, Ogechukwu R Menkiti
STUDY OBJECTIVE: To describe the population pharmacokinetics and pharmacodynamic target attainment of ampicillin in neonates with hypoxic-ischemic encephalopathy (HIE) undergoing controlled hypothermia (CH). DESIGN: Prospective, open-label pharmacokinetic study. SETTING: 189-bed, freestanding children's tertiary care teaching hospital. PATIENTS: Thirteen neonates (three females, 10 males) with HIE encephalopathy receiving CH and ampicillin 100 mg/kg/dose intravenously every 8 hours who were admitted to the neonatal intensive care unit between May 2013 and June 2014...
February 22, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28225884/clinical-hypoxic-ischemic-encephalopathy-score-of-the-iberoamerican-society-of-neonatology-siben-a-new-proposal-for-diagnosis-and-management
#5
José Maria Rodriguez Perez, Sergio G Golombek, Augusto Sola
Hypoxic ischemic encephalopathy is a major complication of perinatal asphyxia, with high morbidity, mortality and neurologic sequelae as cerebral palsy, mostly in poor or developing countries. The difficulty in the diagnosis and management of newborns in these countries is astonishing, thus resulting in unreliable data on this pathology and bad outcomes regarding mortality and incidence of neurologic sequelae. The objective of this article is to present a new clinical diagnostic score to be started in the delivery room and to guide the therapeutic approach, in order to improve these results...
January 1, 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28224092/language-and-cognitive-outcome-for-high-risk-neonates-at-the-age-of-2-3-years-experience-from-an-arab-country
#6
Tamer Abou-Elsaad, Hesham Abdel-Hady, Hemmat Baz, Doaa ElShabrawi
AIM: To investigate the effect of different neonatal risk factors on different language parameters as well as cognitive abilities among Arabic speaking Egyptian children at the age of two to three years of life and to find out which risk factor(s) had the greatest impact on language and cognitive abilities. METHODS: This retrospective cohort study was conducted on 103 children with age range of 2-3 years (median age 31 mo). They were 62 males and 41 females who were exposed to different high-risk factors in the perinatal period, with exclusion of metabolic disorders, sepsis/meningitis, congenital anomalies and chromosomal aberrations...
February 8, 2017: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/28223135/cell-physiology-regulation-by-hypoxia-inducible-factor-1-targeting-oxygen-related-nanomachineries-of-hypoxic-cells
#7
REVIEW
Morteza Eskandani, Somayeh Vandghanooni, Jaleh Barar, Hossein Nazemiyeh, Yadollah Omidi
Any dysfunctionality in maintaining the oxygen homeostasis by mammalian cells may elicit hypoxia/anoxia, which results in inescapable oxidative stress and possible subsequent detrimental impacts on certain cells/tissues with high demands to oxygen molecules. The ischemic damage in turn can trigger initiation of a number of diseases including organs ischemia, metabolic disorders, inflammatory diseases, different types of malignancies, and alteration in wound healing process. Thus, full comprehension of molecular mechanism(s) and cellular physiology of the oxygen homeostasis is the cornerstone of the mammalian cells metabolism, energetic pathways and health and disease conditions...
February 13, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28222320/antioxidant-polymorphisms-do-not-influence-the-risk-of-epilepsy-or-its-drug-resistance-after-neonatal-hypoxic-ischemic-brain-injury
#8
Katarina Esih, Katja Goričar, Vita Dolžan, Zvonka Rener-Primec
PURPOSE: The aim of this study was to investigate if common functional antioxidant polymorphisms are associated with epilepsy after neonatal hypoxic-ischemic encephalopathy (HIE). The antioxidant enzymes manganese superoxide dismutase (SOD2), glutathione peroxidase 1 (GPX1) and catalase (CAT) represent the primary defence mechanism against reactive oxygen species (ROS). Evidence suggests that genetic variants in antioxidant enzymes could influence susceptibility to epilepsy, but to date the relationship between them remains unclear...
February 3, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28217152/value-of-electroencephalographic-monitoring-in-newborns-with-hypoxic-ischemic-encephalopathy-treated-with-hypothermia
#9
Hatem Hamed Elshorbagy, Ahmed A Azab, Naglaa M Kamal, Naglaa Fathy Barseem, Mohamed M Bassiouny, Mostafa A Elsayed, Tohamy H Elkhouly
BACKGROUND: The values of electroencephalography (EEG) in neonatal hypoxic-ischemic encephalopathy (HIE) during therapeutic hypothermia (TH) are still uncertain. AIMS: The aim of this study is to detect EEG background, the prevalence of seizures during cooling, and to determine different EEG patterns that can predict brain injury in magnetic resonance imaging (MRI). PATIENTS AND METHODS: Thirty-nine newborns with HIE were subjected to TH. Continuous monitoring by video-EEG was carried out throughout cooling and during rewarming...
October 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28216514/diallyl-trisulfide-augments-ischemia-induced-angiogenesis-via-an-endothelial-nitric-oxide-synthase-dependent-mechanism
#10
Ryo Hayashida, Kazuhisa Kondo, Sumio Morita, Kazumasa Unno, Satoshi Shintani, Yuuki Shimizu, John W Calvert, Rei Shibata, Toyoaki Murohara
BACKGROUND: Hydrogen sulfide (H2S) exerts beneficial actions against the development of cardiovascular disease. Diallyl trisulfide (DATS) is an organic polysulfide found in garlic oil that liberates H2S under physiological conditions. This study investigated whether DATS modulates endothelial cell function, as well as revascularization processes in a mouse model of hind-limb ischemia.Methods and Results:Wild-type (WT), endothelial nitric oxide synthase-deficient (eNOS-KO) and Akt1-heterogenic deficient (Akt-Het) mice were subjected to unilateral hindlimb ischemia (HLI)...
February 17, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28211647/clinical-characteristics-predicting-abnormal-brain-magnetic-resonance-image-findings-in-hypoxic-ischemic-encephalopathy-infants
#11
Sook K Yum, Cheong-Jun Moon, Young-Ah Youn, In K Sung
BACKGROUND: The aim of this study was to elucidate the specific clinical characteristics associated with abnormal brain magnetic resonance image(MRI) findings in hypoxic ischemic encephalopathy(HIE) infants in order to discern how to predict poorer outcomes more accurately. METHODS: A retrospective data analysis of HIE infants admitted to the neonatal intensive care unit of a tertiary hospital was performed. Baseline perinatal information and physical and neurological findings were compared in HIE infants according to the presence of abnormal brain MRI findings...
February 17, 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28210211/app-as-a-protective-factor-in-acute-neuronal-insults
#12
REVIEW
Dimitri Hefter, Andreas Draguhn
Despite its key role in the molecular pathology of Alzheimer's disease (AD), the physiological function of amyloid precursor protein (APP) is unknown. Increasing evidence, however, points towards a neuroprotective role of this membrane protein in situations of metabolic stress. A key observation is the up-regulation of APP following acute (stroke, cardiac arrest) or chronic (cerebrovascular disease) hypoxic-ischemic conditions. While this mechanism may increase the risk or severity of AD, APP by itself or its soluble extracellular fragment APPsα can promote neuronal survival...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28209739/myocardial-ischemic-tolerance-in-rats-subjected-to-endurance-exercise-training-during-adaptation-to-chronic-hypoxia
#13
Petra Alánová, Anna Chytilová, Jan Neckář, Jaroslav Hrdlička, Petra Míčová, Kristýna Holzerová, Markéta Hlaváčková, Kristýna Macháčková, František Papoušek, Jana Vašinová, Daniel Benák, Olga Nováková, František Kolář
Chronic hypoxia and exercise are natural stimuli that confer sustainable cardioprotection against ischemia/reperfusion (I/R) injury but it is unknown whether they can act in synergy to enhance ischemic resistance. Inflammatory response mediated by tumor necrosis factor-α (TNF-α) plays a role in the infarct size-limitation by continuous normobaric hypoxia (CNH) whereas exercise is associated with anti-inflammatory effects. This study was conducted to determine whether exercise training performed under conditions of CNH (12% O2) affects myocardial ischemic resistance with respect to inflammatory and redox status...
February 16, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28209514/plasma-metabolite-score-correlates-with-hypoxia-time-in-a-newly-born-piglet-model-for-asphyxia
#14
Julia Kuligowski, Rønnaug Solberg, Ángel Sánchez-Illana, Leonid Pankratov, Anna Parra-Llorca, Guillermo Quintás, Ola Didrik Saugstad, Máximo Vento
Hypoxic-ischemic encephalopathy (HIE) secondary to perinatal asphyxia is a leading cause of mortality and acquired long-term neurologic co-morbidities in the neonate. The most successful intervention for the treatment of moderate to severe HIE is moderate whole body hypothermia initiated within 6h from birth. The objective and prompt identification of infants who are at risk of developing moderate to severe HIE in the critical first hours still remains a challenge. This work proposes a metabolite score calculated based on the relative intensities of three metabolites (choline, 6,8-dihydroxypurine and hypoxanthine) that showed maximum correlation with hypoxia time in a consolidated piglet model for neonatal hypoxia-ischemia...
February 7, 2017: Redox Biology
https://www.readbyqxmd.com/read/28206999/early-eeg-power-predicts-mri-injury-in-infants-with-hypoxic-ischemic-encephalopathy
#15
S V Jain, J M Zempel, P Srinivasakumar, M Wallendorf, A Mathur
OBJECTIVE: Early identification of infants with hypoxic-ischemic encephalopathy who have adverse outcomes despite neuroprotection with therapeutic hypothermia (TH) is urgently needed. Recent studies have found limited value of amplitude integrated EEG (aEEG) for predicting short-term outcomes in this population. Other quantitative electroencephalography (EEG) variables reflecting EEG amplitude, such as EEG power, could provide early stratification of a high-risk cohort in this population...
February 16, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28202127/-role-of-mitophagy-in-neonatal-rats-with-hypoxic-ischemic-brain-damage
#16
Ming-Xi Li, Yi Qu, De-Zhi Mu
OBJECTIVE: To investigate mitophagy in an animal model of hypoxic-ischemic brain damage (HIBD) and its role in HIBD. METHODS: A total of 120 neonatal Sprague-Dawley rats aged 7 days were divided into three groups: sham-operation, HIBD, and autophagy inhibitor intervention (3MA group). The rats in the HIBD group were treated with right common carotid artery ligation and then put in a hypoxic chamber (8% oxygen and 92% nitrogen) for 2.5 hours. Those in the 3MA group were given ligation and hypoxic treatment at 30 minutes after intraperitoneal injection of 2 μL 3MA...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28202125/-effect-of-telomerase-activation-on-biological-behaviors-of-neural-stem-cells-in-rats-with-hypoxic-ischemic-insults
#17
Jun-Jie Meng, Shi-Ping Li, Feng-Yan Zhao, Yu Tong, De-Zhi Mu, Yi Qu
OBJECTIVE: To investigate the effect of telomerase activation on biological behaviors of neural stem cells after hypoxic-ischemic insults. METHODS: The neural stem cells passaged in vitro were divided into four groups: control, oxygen-glucose deprivation (OGD), OGD+cycloastragenol (CAG) high concentration (final concentration of 25 μM), and OGD+CAG low concentration (final concentration of 10 μM). The latter three groups were subjected to OGD. Telomerase reverse transcriptase (TERT) expression level was evaluated by Western blot...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28198757/effect-of-temperature-on-heart-rate-variability-in-neonatal-icu-patients-with-hypoxic-ischemic-encephalopathy
#18
An N Massaro, Heather E Campbell, Marina Metzler, Tareq Al-Shargabi, Yunfei Wang, Adre du Plessis, Rathinaswamy B Govindan
OBJECTIVE: To determine whether measures of heart rate variability are related to changes in temperature during rewarming after therapeutic hypothermia for hypoxic-ischemic encephalopathy. DESIGN: Prospective observational study. SETTING: Level 4 neonatal ICU in a free-standing academic children's hospital. PATIENTS: Forty-four infants with moderate to severe hypoxic-ischemic encephalopathy treated with therapeutic hypothermia...
February 14, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28196356/therapeutic-hypothermia-provides-variable-protection-against-behavioral-deficits-after-neonatal-hypoxia-ischemia-a-potential-role-for-brain-derived-neurotrophic-factor
#19
Johana Diaz, Suleiman Abiola, Nancy Kim, Oliver Avaritt, Debra Flock, Jenny Yu, Frances J Northington, Raul Chavez-Valdez
BACKGROUND: Despite treatment with therapeutic hypothermia (TH), infants who survive hypoxic ischemic (HI) encephalopathy (HIE) have persistent neurological abnormalities at school age. Protection by TH against HI brain injury is variable in both humans and animal models. Our current preclinical model of hypoxia-ischemia (HI) and TH displays this variability of outcomes in neuropathological and neuroimaging end points with some sexual dimorphism. The detailed behavioral phenotype of this model is unknown...
February 15, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28190553/cervical-spine-imaging-for-young-children-with-inflicted-trauma-expanding-the-injury-pattern
#20
Joanne Baerg, Arul Thirumoorthi, Rosemary Vannix, Asma Taha, Amy Young, Alexander Zouros
AIM: The purpose of this study was to document the incidence and pattern of cervical spine (c-spine) injuries in children below 36months with inflicted trauma. METHODS: An IRB approved, prospective cohort study was performed between July 2011 and January 2016. Inclusion criteria were: age below 36months, loss of consciousness after inflicted trauma, and one initial head computed tomography finding: a subdural, intraventricular, intraparenchymal, subarachnoid hemorrhage, diffuse axonal injury, hypoxic injury, or cerebral edema...
January 30, 2017: Journal of Pediatric Surgery
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