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Hypoxic-ischemic encephalopathy

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https://www.readbyqxmd.com/read/28706860/targeted-temperature-management-in-neurological-intensive-care-unit
#1
REVIEW
Sombat Muengtaweepongsa, Winchana Srivilaithon
Targeted temperature management (TTM) shows the most promising neuroprotective therapy against hypoxic/ischemic encephalopathy (HIE). In addition, TTM is also useful for treatment of elevated intracranial pressure (ICP). HIE and elevated ICP are common catastrophic conditions in patients admitted in Neurologic intensive care unit (ICU). The most common cause of HIE is cardiac arrest. Randomized control trials demonstrate clinical benefits of TTM in patients with post-cardiac arrest. Although clinical benefit of ICP control by TTM in some specific critical condition, for an example in traumatic brain injury, is still controversial, efficacy of ICP control by TTM is confirmed by both in vivo and in vitro studies...
June 26, 2017: World Journal of Methodology
https://www.readbyqxmd.com/read/28706729/a-retrospective-review-of-the-pediatric-development-clinic-implementation-a-model-to-improve-medical-nutritional-and-developmental-outcomes-of-at-risk-under-five-children-in-rural-rwanda
#2
Eric Ngabireyimana, Christine Mutaganzwa, Catherine M Kirk, Ann C Miller, Kim Wilson, Evodia Dushimimana, Olivier Bigirumwami, Evelyne S Mukakabano, Fulgence Nkikabahizi, Hema Magge
BACKGROUND: As more high-risk newborns survive the neonatal period, they remain at significant medical, nutritional, and developmental risk. However, no follow-up system for early intervention exists in most developing countries. In 2014, a novel Pediatric Development Clinic (PDC) was implemented to provide comprehensive follow-up to at-risk under-five children, led by nurses and social workers in a district hospital and surrounding health centers in rural Rwanda. METHODS: At each PDC visit, children undergo clinical/nutritional assessment and caregivers participate in counseling sessions...
2017: Maternal Health, Neonatology and Perinatology
https://www.readbyqxmd.com/read/28704822/prediction-of-outcome-in-neonates-with-hypoxic-ischemic-encephalopathy-ii-role-of-amplitude-integrated-electroencephalography-and-cerebral-oxygen-saturation-measured-by-near-infrared-spectroscopy
#3
Katharina Goeral, Berndt Urlesberger, Vito Giordano, Gregor Kasprian, Michael Wagner, Lisa Schmidt, Angelika Berger, Katrin Klebermass-Schrehof, Monika Olischar
BACKGROUND: Few data have been published on the combined use of amplitude-integrated electroencephalography (aEEG) and near-infrared spectroscopy (NIRS) for outcome prediction in neonates cooled for hypoxic-ischemic encephalopathy (HIE). OBJECTIVE: Our aim was to evaluate the predictive values and the most powerful predictive combinations of single aEEG and NIRS parameters and the respective cut-off values with regard to short-term outcomes in HIE II. METHODS: aEEG and NIRS were prospectively studied at the Medical University of Vienna in the first 102 h of life with regard to magnetic resonance imaging (MRI)...
July 14, 2017: Neonatology
https://www.readbyqxmd.com/read/28704294/early-detection-of-neonatal-hypoxic-ischemic-white-matter-injury-an-mr-diffusion-tensor-imaging-study
#4
Youngseob Seo, Geun-Tae Kim, Jin Wook Choi
The purpose of this study was to compare diffusion tensor metrics in normal age-matched neonates with survivors of hypoxic-ischemic encephalopathy (HIE) and extracorporeal membrane oxygenation (ECMO). Thirty-five normal, 27 HIE, and 13 ECMO infants underwent MRI at 3 T. Neurodevelopmental assessments were performed. Fractional anisotropy (FA), axial diffusivity (AD), and radial diffusivity (RD) of the inferior fronto-occipital fasciculus, inferior longitudinal fasciculus, anterior commissure, genu corpus callosum and splenium of the corpus callosum, anterior and posterior limb of the internal capsule, superior longitudinal fasciculus, and the centrum semiovale were analyzed with tract-based spatial statistics modified for use in neonates...
July 12, 2017: Neuroreport
https://www.readbyqxmd.com/read/28703794/impaired-autophagosome-clearance-contributes-to-neuronal-death-in-a-piglet-model-of-neonatal-hypoxic-ischemic-encephalopathy
#5
Derong Cui, Dawei Sun, Xintao Wang, Liye Yi, Ewa Kulikowicz, Michael Reyes, Junchao Zhu, Zeng-Jin Yang, Wei Jiang, Raymond C Koehler
To examine the temporal relationship of cortical autophagic flux with delayed neuronal cell death after hypoxia-ischemia (HI) in neonatal piglets. HI was produced with 45-min hypoxia and 7-min airway occlusion in 3-5-day-old piglets. Markers of autophagic, lysosomal and cell death signaling were studied via immunohistochemistry, immunoblotting, and histochemistry in piglet brains. In vitro, autophagy was impaired in cultured mouse cortical neurons treated with chloroquine with or without rapamycin for 1 d in the presence of Z-VAD-fmk, cyclosporine A, or vehicle control, and cell viability was assessed with the MTT assay...
July 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28695691/neonatal-therapeutic-hypothermia-outside-of-standard-guidelines-a-survey-of-u-s-neonatologists
#6
Jennifer Burnsed, Santina A Zanelli
AIM: Therapeutic hypothermia is standard of care in term infants with moderate-to-severe hypoxic-ischemic encephalopathy (HIE). The goal of this survey was to explore the attitudes of U.S. neonatologists caring for infants with HIE who fall outside of current guidelines. METHOD: Case-based survey administered to members of the Section on Neonatal-Perinatal Medicine of American Academy of Pediatrics. RESULTS: 447 responses were analyzed, i...
July 11, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28690645/neuroprotective-effects-of-erythropoietin-against-hypoxic-injury-via-modulation-of-the-mitogen-activated-protein-kinase-pathway-and-apoptosis
#7
Ji Eun Jeong, Jae Hyun Park, Chun Soo Kim, Sang Lak Lee, Hai Lee Chung, Woo Taek Kim, Eun Joo Lee
PURPOSE: Hypoxic-ischemic encephalopathy is a significant cause of neonatal morbidity and mortality. Erythropoietin (EPO) is emerging as a therapeutic candidate for neuroprotection. Therefore, this study was designed to determine the neuroprotective role of recombinant human EPO (rHuEPO) and the possible mechanisms by which mitogen-activated protein kinase (MAPK) signaling pathway including extracellular signal-regulated kinase (ERK1/2), JNK, and p38 MAPK is modulated in cultured cortical neuronal cells and astrocytes...
June 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28686927/servo-controlled-versus-manual-cooling-methods-in-neonates-with-hypoxic-ischemic-encephalopathy
#8
Ashok Buchiboyina, Eric Ma, Andrew Yip, Deepika Wagh, Jason Tan, Judy McMichael, Max Bulsara, Shripada Rao
BACKGROUND: Therapeutic hypothermia is known to improve outcomes in neonates with hypoxic ischemic encephalopathy (HIE). There are no studies that have compared servo controlled cooling (SCC) versus manually controlled cooling (MCC) methods in HIE. AIM: To compare the outcomes of SCC versus MCC in neonates with HIE. METHODS AND OUTCOME MEASURES: Between Jan 2008 and May 2011, MCC with cool-gel packs was used to achieve rectal temperatures of 33...
July 4, 2017: Early Human Development
https://www.readbyqxmd.com/read/28686592/can-cerebellar-and-brainstem-apparent-diffusion-coefficient-adc-values-predict-neuromotor-outcome-in-term-neonates-with-hypoxic-ischemic-encephalopathy-hie-treated-with-hypothermia
#9
Gemma Arca-Díaz, Thomas J Re, Marie Drottar, Carmen Rosa Fortuno, Katyucia De Macedo-Rodrigues, Kiho Im, Josep Figueras-Aloy, Patricia Ellen Grant
BACKGROUND AND PURPOSE: To determine the apparent diffusion coefficient (ADC) in specific infratentorial brain structures during the first week of life and its relation with neuromotor outcome for Hypoxic-ischemic encephalopathy (HIE) in term neonates with and without whole-body hypothermia (TH). MATERIALS AND METHODS: We retrospectively evaluated 45 MRI studies performed in the first week of life of term neonates born between 2010 and 2013 at Boston Children's Hospital...
2017: PloS One
https://www.readbyqxmd.com/read/28672801/microrna-210-suppresses-junction-proteins-and-disrupts-blood-brain-barrier-integrity-in-neonatal-rat-hypoxic-ischemic-brain-injury
#10
Qingyi Ma, Chiranjib Dasgupta, Yong Li, Lei Huang, Lubo Zhang
Cerebral edema, primarily caused by disruption of the blood-brain barrier (BBB), is one of the serious complications associated with brain injury in neonatal hypoxic-ischemic encephalopathy (HIE). Our recent study demonstrated that the hypoxic-ischemic (HI) treatment significantly increased microRNA-210 (miR-210) in the neonatal rat brain and inhibition of miR-210 provided neuroprotection in neonatal HI brain injury. The present study aims to determine the role of miR-210 in the regulation of BBB integrity in the developing brain...
June 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28672318/effect-of-depth-and-duration-of-cooling-on-death-or-disability-at-age-18-months-among-neonates-with-hypoxic-ischemic-encephalopathy-a-randomized-clinical-trial
#11
RANDOMIZED CONTROLLED TRIAL
Seetha Shankaran, Abbot R Laptook, Athina Pappas, Scott A McDonald, Abhik Das, Jon E Tyson, Brenda B Poindexter, Kurt Schibler, Edward F Bell, Roy J Heyne, Claudia Pedroza, Rebecca Bara, Krisa P Van Meurs, Carolyn M Petrie Huitema, Cathy Grisby, Uday Devaskar, Richard A Ehrenkranz, Heidi M Harmon, Lina F Chalak, Sara B DeMauro, Meena Garg, Michelle E Hartley-McAndrew, Amir M Khan, Michele C Walsh, Namasivayam Ambalavanan, Jane E Brumbaugh, Kristi L Watterberg, Edward G Shepherd, Shannon E G Hamrick, John Barks, C Michael Cotten, Howard W Kilbride, Rosemary D Higgins
Importance: Hypothermia for 72 hours at 33.5°C for neonatal hypoxic-ischemic encephalopathy reduces death or disability, but rates continue to be high. Objective: To determine if cooling for 120 hours or to a temperature of 32.0°C reduces death or disability at age 18 months in infants with hypoxic-ischemic encephalopathy. Design, Setting, and Participants: Randomized 2 × 2 factorial clinical trial in neonates (≥36 weeks' gestation) with hypoxic-ischemic encephalopathy at 18 US centers in the Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network between October 2010 and January 2016...
July 4, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28669854/uptake-of-dendrimer-drug-by-different-cell-types-in-the-hippocampus-after-hypoxic-ischemic-insult-in-neonatal-mice-effects-of-injury-microglial-activation-and-hypothermia
#12
Christina L Nemeth, Gabrielle T Drummond, Manoj K Mishra, Fan Zhang, Patrice Carr, Maxine S Garcia, Sydney Doman, Ali Fatemi, Michael V Johnston, Rangaramanujam M Kannan, Sujatha Kannan, Mary Ann Wilson
Perinatal hypoxic-ischemic encephalopathy (HIE) can result in neurodevelopmental disability, including cerebral palsy. The only treatment, hypothermia, provides incomplete neuroprotection. Hydroxyl polyamidoamine (PAMAM) dendrimers are being explored for targeted delivery of therapy for HIE. Understanding the biodistribution of dendrimer-conjugated drugs into microglia, neurons and astrocytes after brain injury is essential for optimizing drug delivery. We conjugated N-acetyl-L-cysteine to Cy5-labeled PAMAM dendrimer (Cy5-D-NAC) and used a mouse model of perinatal HIE to study effects of timing of administration, hypothermia, brain injury, and microglial activation on uptake...
June 30, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28660484/therapeutic-strategies-for-leukodystrophic-disorders-resulting-from-perinatal-asphyxia-focus-on-myelinating-oligodendrocytes
#13
REVIEW
Justyna Janowska, Joanna Sypecka
Perinatal asphyxia results from the action of different risk factors like complications during pregnancy, preterm delivery, or long and difficult labor. Nowadays, it is still the leading cause of neonatal brain injury known as hypoxic-ischemic encephalopathy (HIE) and resulting neurological disorders. A temporal limitation of oxygen, glucose, and trophic factors supply results in alteration of neural cell differentiation and functioning and/or leads to their death. Among the affected cells are oligodendrocytes, responsible for myelinating the central nervous system (CNS) and formation of white matter...
June 28, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28641453/accuracy-of-limited-montage-electroencephalography-in-monitoring-postanoxic-comatose-patients
#14
Sandipan Pati, Lauren McClain, Lidia Moura, Yuan Fan, M Brandon Westover
BACKGROUND: Continuous EEG (cEEG) monitoring may help to identify the small percentage of adults with hypoxic-ischemic encephalopathy (HIE) who will regain consciousness if allowed sufficient time. However, the limited yield in this population has led some to question the cost-effectiveness cEEG monitoring in this population. We hypothesized that limited-montage cEEG could provide essentially the same neurophysiologic information at lower cost. In this proof of concept study, we aim to demonstrate the potentials of limited channel EEG in prognostication in postanoxic patients...
June 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/28629418/prenatal-brain-disruption-in-isolated-sulfite-oxidase-deficiency
#15
Hsiu-Fen Lee, Ching-Shiang Chi, Chi-Ren Tsai, Hung-Chieh Chen, I-Chun Lee
BACKGROUND: Isolated sulfite oxidase deficiency (ISOD) is a very rare autosomal recessive inherited neurometabolic disease. The most striking postnatal neuroimaging finding is multicystic encephalomalacia, which occurs rapidly within days to weeks after birth and mimics severe hypoxic-ischemic encephalopathy. The aim of this study was to describe the prenatal neuroimaging features in a neonate and a fetus diagnosed with ISOD. RESULTS: We report an 11-day-old female neonate who presented with feeding difficulties, decreased activity, neonatal seizures, and movement disorders within a few days after birth...
June 19, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28628913/age-dependent-effects-of-alk5-inhibition-and-mechanism-of-neuroprotection-in-neonatal-hypoxic-ischemic-brain-injury
#16
Brian H Kim, Mariano Guardia Clausi, Michelle Frondelli, Israel C Nnah, Chaitali Saqcena, Radek Dobrowolski, Steven W Levison
Neonatal encephalopathy due to hypoxic-ischemic (HI) brain injury triggers a wave of neuroinflammatory events attributed to causing the progressive degeneration and functional deficits seen weeks after the initial insult. In a recent set of studies, we evaluated the therapeutic efficacy of a small molecule antagonist for ALK5 (activin-like kinase 5 ), TGF-β receptor in a rat model of moderate perinatal HI and found significant improvements in neurologic outcomes. Here, we have extended those studies to evaluate the efficacy of delayed TGF-β receptor antagonism on postnatal day (P) 6 and P9 HI rat pups with and without hypothermia...
2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28623417/a-validated-clinical-mri-injury-scoring-system-in-neonatal-hypoxic-ischemic-encephalopathy
#17
Shamik B Trivedi, Zachary A Vesoulis, Rakesh Rao, Steve M Liao, Joshua S Shimony, Robert C McKinstry, Amit M Mathur
BACKGROUND: Deep nuclear gray matter injury in neonatal hypoxic-ischemic encephalopathy (HIE) is associated with worse neurodevelopmental outcomes. We previously published a qualitative MRI injury scoring system utilizing serial T1-weighted, T2-weighted and diffusion-weighted imaging (DWI), weighted for deep nuclear gray matter injury. OBJECTIVES: To establish the validity of the MRI scoring system with neurodevelopmental outcome at 18-24 months. MATERIALS AND METHODS: MRI scans from neonates with moderate to severe HIE treated with therapeutic hypothermia were evaluated...
June 16, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28621620/deep-brain-stimulation-for-the-early-treatment-of-the-minimally-conscious-state-and-vegetative-state-experience-in-14-patients
#18
Darko Chudy, Vedran Deletis, Fadi Almahariq, Petar Marčinković, Jasenka Škrlin, Veronika Paradžik
OBJECTIVE An effective treatment of patients in a minimally conscious state (MCS) or vegetative state (VS) caused by hypoxic encephalopathy or traumatic brain injury (TBI) is not yet available. Deep brain stimulation (DBS) of the thalamic reticular nuclei has been attempted as a therapeutic procedure mainly in patients with TBI. The purpose of this study was to investigate the therapeutic use of DBS for patients in VS or MCS. METHODS Fourteen of 49 patients in VS or MCS qualified for inclusion in this study and underwent DBS...
June 16, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28617423/relationship-between-temperature-variability-and-brain-injury-on-magnetic-resonance-imaging-in-cooled-newborn-infants-after-perinatal-asphyxia
#19
B Brotschi, R Gunny, C Rethmann, U Held, B Latal, C Hagmann
OBJECTIVE: The objective of the study was whether temperature management during therapeutic hypothermia correlates with the severity of brain injury assessed on magnetic resonance imaging in term infants with hypoxic-ischemic encephalopathy. STUDY DESIGN: Prospectively collected register data from the National Asphyxia and Cooling Register of Switzerland were analyzed. RESULT: Fifty-five newborn infants were cooled for 72 h with a target temperature range of 33 to 34 °C...
June 15, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28600955/parp-activity-and-inhibition-in-fetal-and-adult-oligodendrocyte-precursor-cells-effect-on-cell-survival-and-differentiation
#20
Vito A Baldassarro, Alessandra Marchesini, Luciana Giardino, Laura Calzà
Poly (ADP-ribose) polymerase (PARP) family members are ubiquitously expressed and play a key role in cellular processes, including DNA repair and cell death/survival balance. Accordingly, PARP inhibition is an emerging pharmacological strategy for cancer and neurodegenerative diseases. Consistent evidences support the critical involvement of PARP family members in cell differentiation and phenotype maturation. In this study we used an oligodendrocyte precursor cells (OPCs) enriched system derived from fetal and adult brain to investigate the role of PARP in OPCs proliferation, survival, and differentiation...
May 30, 2017: Stem Cell Research
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