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hypoxic ischemic encephalopathy

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https://www.readbyqxmd.com/read/29769612/hypothermia-broadens-the-therapeutic-time-window-of-mesenchymal-stem-cell-transplantation-for-severe-neonatal-hypoxic-ischemic-encephalopathy
#1
So Yoon Ahn, Yun Sil Chang, Dong Kyung Sung, Se In Sung, Won Soon Park
Recently, we have demonstrated that concurrent hypothermia and mesenchymal stem cells (MSCs) transplantation synergistically improved severe neonatal hypoxic ischemic encephalopathy (HIE). The current study was designed to determine whether hypothermia could extend the therapeutic time window of MSC transplantation for severe neonatal HIE. To induce HIE, newborn rat pups were exposed to 8% oxygen for 2 h following unilateral carotid artery ligation on postnatal day (P) 7. After approving severe HIE involving >50% of the ipsilateral hemisphere volume, hypothermia (32 °C) for 2 days was started...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29747886/therapeutic-hypothermia-how-can-we-optimize-this-therapy-to-further-improve-outcomes
#2
REVIEW
Girija Natarajan, Abbot Laptook, Seetha Shankaran
Neonatal hypoxic-ischemic encephalopathy remains associated with considerable death and disability. In multiple randomized controlled trials, therapeutic hypothermia for neonatal moderate or severe hypoxic-ischemic encephalopathy among term infants has been shown to be safe and effective in reducing death and disability in survivors. In this article, the current status of infant and childhood outcomes following this therapy is reviewed. The clinical approaches that may help to optimize this innovative neuroprotective therapy are presented...
June 2018: Clinics in Perinatology
https://www.readbyqxmd.com/read/29741516/the-influence-of-anesthetics-on-substantia-nigra-tyrosine-hydroxylase-expression-and-tau-phosphorylation-in-the-hypoxic-ischemic-near-term-lamb
#3
Melinda Barkhuizen, Fleur J P van Dijck, Reint K Jellema, Ruth Gussenhoven, Imke Engelbertink, Ralph van Mechelen, Jack P M Cleutjens, Matthias Seehase, Harry W M Steinbusch, Luc J Zimmermann, A W Danilo Gavilanes, Boris W Kramer
BackgroundGeneral anesthetics could protect key neurotransmitter systems, such as the dopaminergic system, from hypoxic-ischemic encephalopathy (HIE) by limiting excessive glutamatergic neurotransmission. However, anesthetics may adversely affect inflammation and tau phosphorylation.MethodsA near-term sheep model of HIE by umbilical cord occlusion (UCO) under anesthesia was used. The effect of propofol and isoflurane on the dopaminergic neurotransmitter phenotype in the substantia nigra (SN) was studied using tyrosine hydroxylase immunohistochemistry...
May 9, 2018: Pediatric Research
https://www.readbyqxmd.com/read/29731475/histopathological-study-of-encephalomalacia-in-neonatal-calves-and-application-of-neuronal-and-axonal-degeneration-marker
#4
Kenji Koyama, Akihisa Kangawa, Natsuko Fukumoto, Ken-Ichi Watanabe, Noriyuki Horiuchi, Tomomi Ozawa, Hisashi Inokuma, Yoshiyasu Kobayashi
Five calves that had shown neurological symptoms within 9 days after birth were histopathologically diagnosed as encephalomalacia. Two calves showed bilateral laminar cerebrocortical necrosis and neuronal necrosis in the corpus striatum and hippocampus. Since the distributional pattern of the lesions was consistent with that of global ischemia in other species, the lesions were probably hypoxic/ischemic encephalopathy consistent with the history of dystocia and perinatal asphyxia. One calf also showed bilateral laminar cerebrocortical necrosis...
May 4, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29725527/a-correction-formula-for-neuron-specific-enolase-measurement-in-hemolyzed-neonatal-serum-samples
#5
Qiang Wang, Guangrong Wang, Xiaolan Lu, Xiaolan Guo, Qin Du, Fang Lin, Quming Fan, Guoyuan Zhang, Dongsheng Wang
As a specific biomarker in neonatal hypoxic-ischemic encephalopathy (HIE), the measurement of neuron-specific enolase (NSE) has been advocated as a predictor of outcome in neurological injury. However, the measured levels of NSE may be influenced by hemolysis. In the current study, the change in the concentration of NSE in serum was measured by chemiluminescence prior to and following the addition of individual frozen and thawed red blood cells from 86 neonates that were collected within 24 h of birth. The changes in the concentration of NSE were compared with the changes in the concentration of hemoglobin (Hb), measured by the hemoglobin cyanide (HiCN) method, to establish a correction formula...
May 2018: Biomedical Reports
https://www.readbyqxmd.com/read/29725319/nitric-oxide-synthase-inhibition-as-a-neuroprotective-strategy-following-hypoxic-ischemic-encephalopathy-evidence-from-animal-studies
#6
REVIEW
Laurent M A Favié, Arlette R Cox, Agnes van den Hoogen, Cora H A Nijboer, Cacha M P C D Peeters-Scholte, Frank van Bel, Toine C G Egberts, Carin M A Rademaker, Floris Groenendaal
Background: Hypoxic-ischemic encephalopathy following perinatal asphyxia is a leading cause of neonatal death and disability worldwide. Treatment with therapeutic hypothermia reduced adverse outcomes from 60 to 45%. Additional strategies are urgently needed to further improve the outcome for these neonates. Inhibition of nitric oxide synthase (NOS) is a potential neuroprotective target. This article reviews the evidence of neuroprotection by nitric oxide (NO) synthesis inhibition in animal models...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29718007/upregulation-of-cholesterol-24-hydroxylase-following-hypoxia-ischemia-in-neonatal-mouse-brain
#7
Fuxin Lu, Jun Zhu, Selena Guo, Brandon J Wong, Farid F Chehab, Donna M Ferriero, Xiangning Jiang
BackgroundMaintenance of cholesterol homeostasis is crucial for brain development. Brain cholesterol relies on de novo synthesis and is cleared primarily by conversion to 24S-hydroxycholesterol (24S-HC) with brain-specific cholesterol 24-hydroxylase (CYP46A1). We aimed to investigate the impact of hypoxia-ischemia (HI) on brain cholesterol metabolism in the neonatal mice.MethodsPostnatal day 9 C57BL/6 pups were subjected to HI using the Vannucci model. CYP46A1 expression was assessed with western blotting and its cellular localization was determined using immunofluorescence staining...
May 2, 2018: Pediatric Research
https://www.readbyqxmd.com/read/29714433/peritoneal-dialysis-in-neonates-six-years-of-single-center-experience
#8
Ferda Özlü, Hacer Yapıcıoğlu Yıldızdaş, Gül Şeker, Hüseyin Şimşek, Aysun Karabay Bayazıt, Mehmet Satar
Background/aim: Peritoneal dialysis (PD) is generally considered the practical dialysis modality for neonates in the treatment of acute kidney injury (AKI) and metabolic disturbances. The aim of this study was to evaluate the indications, complications, and outcomes of PD between January 2011 and December 2016. Materials and methods: This study included all 56 neonates that underwent PD over six years in our neonatal intensive care unit (NICU). A retrospective chart review was performed for all patients in our institution...
April 30, 2018: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29712490/random-urine-uric-acid-to-creatinine-and-prediction-of-perinatal-asphyxia-a-meta-analysis
#9
Ioannis Bellos, Georgia Fitrou, Vasilios Pergialiotis, Despina N Perrea, Nikolaos Papantoniou, Georgios Daskalakis
OBJECTIVE: The purpose of the present review is to evaluate whether urine uric acid to creatinine ratio is increased in perinatal asphyxia and hypoxic-ischemic encephalopathy, as well as to assess its predictive accuracy in the disease. METHODS: We used the Medline (1966-2017), Scopus (2004-2017), Clinicaltrials.gov (2008-2017), Embase (1980-2017), Cochrane Central Register of Controlled Trials CENTRAL (1999-2017) and Google Scholar (2004-2017) databases in our primary search along with the reference lists of electronically retrieved full-text papers...
April 30, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29710738/medico-legal-implications-of-hypothermic-neuroprotection-in-the-newborn
#10
S M Donn, J M Fanaroff
Hypoxic-ischemic encephalopathy (HIE) continues to be a significant source of long term neurological sequelae in infants born at or near term. In the past decade, selective head or whole body cooling has shown promising benefit in ameliorating some of the brain injury from intrapartum asphyxial insults and has become standard care in most developed countries. A decision to offer neuroprotective hypothermia (NPH) may engender subsequent litigation because it presupposes an acute intrapartum injury. Conversely, failing to offer cooling may be interpreted as a violation in the standard of care...
April 24, 2018: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/29710737/cerebral-glucose-deficiency-versus-oxygen-deficiency-in-neonatal-encephalopathy
#11
A M Rudolph
Hypoxic-ischemic encephalopathy (HIE) in newborn infants is generally considered to result from decreased arterial oxygen content or cerebral blood flow. Cerebral injury similar to that of HIE has been noted with hypoglycemia. Studies in fetal lambs have shown that ventilation with 3% oxygen did not change cerebral blood flow, but ventilation with 100% oxygen resulted in marked reduction in cerebral blood flow, glucose delivery and glucose consumption. Blood glucose concentration falls markedly after birth; this, associated with the fall in cerebral blood flow, greatly reduces glucose supply to the brain...
April 24, 2018: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/29705390/automated-eeg-background-analysis-to-identify-neonates-with-hypoxic-ischemic-encephalopathy-treated-with-hypothermia-at-risk-for-adverse-outcome-a-pilot-study
#12
Anneleen Dereymaeker, Vladimir Matic, Jan Vervisch, Perumpillichira J Cherian, Amir H Ansari, Ofelie De Wel, Paul Govaert, Maarten De Vos, Sabine Van Huffel, Gunnar Naulaers, Katrien Jansen
BACKGROUND: To improve the objective assessment of continuous video-EEG (cEEG) monitoring of neonatal brain function, the aim was to relate automated derived amplitude and duration parameters of the suppressed periods in the EEG background (dynamic Interburst Interval= dIBIs) after neonatal hypoxic-ischemic encephalopathy (HIE) to favourable or adverse neurodevelopmental outcome. METHODS: Nineteen neonates (gestational age 36-41 weeks) with HIE underwent therapeutic hypothermia and had cEEG-monitoring...
April 4, 2018: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/29702712/development-of-a-neuronicu-with-a-broader-focus-on-all-newborns-at-risk-of-brain-injury-the-first-2-years
#13
Krisa P Van Meurs, Elisabeth S Yan, Kathi S Randall, Valerie Y Chock, Alexis S Davis, Cecelia S Glennon, Catherine L Clark, Courtney J Wusthoff, Sonia L Bonifacio
OBJECTIVE:  Many critically ill neonates have an existing brain injury or are at risk of neurologic injury. We developed a "NeuroNICU" (neurologic neonatal intensive care unit) to better provide neurologically focused intensive care. STUDY DESIGN:  Demographic and clinical variables, services delivered, and patient outcomes were recorded in a prospective database for all neonates admitted to the NeuroNICU between April 23, 2013, and June 25, 2015. RESULTS:  In total, 546 neonates were admitted to the NeuroNICU representing 32% of all NICU admissions...
April 27, 2018: American Journal of Perinatology
https://www.readbyqxmd.com/read/29692197/inflammatory-responses-are-sex-specific-in-chronic-hypoxic-ischemic-encephalopathy
#14
Abdullah Al Mamun, Haifu Yu, Sharmeen Romana, Fudong Liu
Neonatal hypoxic-ischemic encephalopathy (HIE) is increasingly recognized as a sexually dimorphic disease. Male infants are not only more vulnerable to ischemic insult; they also suffer more long-term cognitive deficits compared with females with comparable brain damage. The innate immune response plays a fundamental role in mediating acute neonatal HIE injury. However, the mechanism underlying the sex difference in chronic HIE is still elusive. The present study investigated the sex difference in HIE outcomes and inflammatory response in the chronic stage (30 days after HIE)...
January 1, 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29689487/evoked-potentials-predict-psychomotor-development-in-neonates-with-normal-mri-after-hypothermia-for-hypoxic-ischemic-encephalopathy
#15
Elisa Cainelli, Daniele Trevisanuto, Francesco Cavallin, Renzo Manara, Agnese Suppiej
OBJECTIVES: To assess the prognostic role of evoked potentials (EP) in neonates with normal magnetic resonance imaging (MRI) after therapeutic hypothermia (TH) for hypoxic-ischemic encephalopathy (HIE). METHODS: Thirty-five neonates recruited for TH because of HIE, having normal neonatal MRI, performed neonatal somatosensory (SEP), visual (VEP) evoked potentials and electroencephalogram (EEG). The effect of SEP, VEP or EEG abnormalities on Griffith's developmental scales at 12 and 24 months was measured; positive (PPV) and negative (NPV) predictive value, sensitivity, specificity and accuracy were calculated...
April 16, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29684437/sleep-dysfunction-following-neonatal-ischemic-seizures-are-differential-by-neonatal-age-of-insult-as-determined-by-qeeg-in-a-mouse-model
#16
S K Kang, S Ammanuel, S Thodupunuri, D A Adler, M V Johnston, S D Kadam
Neonatal seizures associated with hypoxic-ischemic encephalopathy (HIE) pose a challenge in their acute clinical management and are often followed by long-term neurological consequences. We used a newly characterized CD-1 mouse model of neonatal ischemic seizures associated with age-dependent (P7 vs. P10) seizure severity and phenobarbital efficacy (i.e.; PB-resistant vs. PB-efficacious respectively) following unilateral carotid ligation. The long-term consequences following untreated neonatal seizures in P7 vs...
April 20, 2018: Neurobiology of Disease
https://www.readbyqxmd.com/read/29681183/neonatal-hypoxic-ischemic-encephalopathy-emerging-therapeutic-strategies-based-on-pathophysiologic-phases-of-the-injury
#17
Qiuli Wang, Hongyan Lv, Lixin Lu, Pengshun Ren, Lianxiang Li
Neonatal hypoxic ischemic encephalopathy (HIE) is an important cause of neonatal death and disability. At present, there is no unified standard and specialized treatment method for neonatal HIE. In clinical practice, we have found that a gap remains between preclinical medical research and clinical application in treatment of neonatal HIE. To promote an organic combination of preclinical research and clinical application, we propose the different phases as intervention targets, based on the pathophysiologic changes in phases I, II, and III of neonatal HIE; moreover, we suggest transformative medicine as a principle that may improve the therapeutic effect by blocking the progression of the disease to an irreversible stage...
April 22, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29668681/a-longitudinal-1h-nmr-metabolomics-analysis-of-urine-from-newborns-with-hypoxic-ischemic-encephalopathy-undergoing-hypothermia-therapy-clinical-and-medical-legal-insights
#18
Emanuela Locci, Antonio Noto, Melania Puddu, Giulia Pomero, Roberto Demontis, Cristina Dalmazzo, Antonio Delogu, Vassilios Fanos, Ernesto d'Aloja, Paolo Gancia
Perinatal asphyxia is an event affecting around four million newborns worldwide. The 0.5 to 2 per 1000 of full term asphyxiated newborns suffer from hypoxic-ischemic encephalopathy (HIE), which is a frequent cause of death or severe disability and, as consequence, the most common birth injury claim for obstetrics, gynaecologists, and paediatricians. Perinatal asphyxia results from a compromised gas exchange that leads to hypoxemia, hypercapnia, and metabolic acidosis. In this work, we applied a metabolomics approach to investigate the metabolic profiles of urine samples collected from full term asphyxiated newborns with HIE undergoing therapeutic hypothermia (TH), with the aim of identifying a pattern of metabolites associated with HIE and to follow their modifications over time...
2018: PloS One
https://www.readbyqxmd.com/read/29658462/-research-advances-in-immune-tolerance-of-allogeneic-cell-transplantation-in-preterm-infants
#19
Can Lyu, Yi Qu, De-Zhi Mu
Preterm infants are a special group, and related severe neurological, respiratory, and digestive disorders have high disability/fatality rates. Allogeneic cell transplantation may be an effective method for the prevention and treatment of these diseases. At present, animal studies have been conducted for allogeneic cell transplantation in the treatment of hypoxic-ischemic encephalopathy, bronchopulmonary dysplasia, and necrotizing enterocolitis. The main difficulty of this technique is graft-versus-host reaction (GVHR), and successful induction of immune tolerance needs to be achieved in order to solve this problem...
April 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29655964/infant-outcome-after-complete-uterine-rupture
#20
Iqbal Al-Zirqi, Anne Kjersti Daltveit, Siri Vangen
BACKGROUND: Complete uterine rupture is a rare peripartum complication often associated with a catastrophic outcome for both mother and child. However, little has been written based on large data sets about maternal and infant outcome after complete ruptures. This is partly due to the rarity of the event and the serious maternal and infant outcome; it is also partly due to the use of international diagnostic codes that do not differentiate between the less catastrophic partial rupture and more catastrophic complete uterine rupture...
April 12, 2018: American Journal of Obstetrics and Gynecology
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