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Perinatal asphyxia

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https://www.readbyqxmd.com/read/28817111/prospective-cohort-study-for-identification-of-underlying-genetic-causes-in-neonatal-encephalopathy-using-whole-exome-sequencing
#1
Theodora U J Bruun, Caro-Lyne DesRoches, Diane Wilson, Vann Chau, Tadashi Nakagawa, Masahiro Yamasaki, Shinya Hasegawa, Toshiyuki Fukao, Christian Marshall, Saadet Mercimek-Andrews
PurposeNeonatal encephalopathy, which is characterized by a decreased level of consciousness, occurs in 1-7/1,000 live-term births. In more than half of term newborns, there is no identifiable etiological factor. To identify underlying genetic defects, we applied whole-exome sequencing (WES) in term newborns with neonatal encephalopathy as a prospective cohort study.MethodsTerm newborns with neonatal encephalopathy and no history of perinatal asphyxia were included. WES was performed using patient and both parents' DNA...
August 17, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28782169/impact-of-neonatal-hypoxia-ischaemia-on-oligodendrocyte-survival-maturation-and-myelinating-potential
#2
Malgorzata Ziemka-Nalecz, Justyna Janowska, Lukasz Strojek, Joanna Jaworska, Teresa Zalewska, Malgorzata Frontczak-Baniewicz, Joanna Sypecka
Hypoxic-ischaemic episodes experienced at the perinatal period commonly lead to a development of neurological disabilities and cognitive impairments in neonates or later in childhood. Clinical symptoms often are associated with the observed alterations in white matter in the brains of diseased children, suggesting contribution of triggered oligodendrocyte/myelin pathology to the resulting disorders. To date, the processes initiated by perinatal asphyxia remain unclear, hampering the ability to develop preventions...
August 7, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28754111/care-of-the-mother-infant-dyad-a-novel-approach-to-conducting-and-evaluating-neonatal-resuscitation-simulation-training-in-bihar-india
#3
Brennan Vail, Hilary Spindler, Melissa C Morgan, Susanna R Cohen, Amelia Christmas, Pramod Sah, Malay B Shah, Aritra Das, Dilys M Walker
BACKGROUND: As the global under-five mortality rate declines, an increasing percentage is attributable to early neonatal mortality. A quarter of early neonatal deaths are due to perinatal asphyxia. However, neonatal resuscitation (NR) simulation training in low-resource settings, where the majority of neonatal deaths occur, has achieved variable success. In Bihar, India, the poorest region in South Asia, there is tremendous need for a new approach to reducing neonatal morality. METHODS: This analysis aims to assess the impact of a novel in-situ simulation training program, developed by PRONTO International and implemented in collaboration with CARE India, on NR skills of nurses in Bihar...
July 28, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28747873/mitochondria-bioenergetics-and-excitotoxicity-new-therapeutic-targets-in-perinatal-brain-injury
#4
REVIEW
Bryan Leaw, Syam Nair, Rebecca Lim, Claire Thornton, Carina Mallard, Henrik Hagberg
Injury to the fragile immature brain is implicated in the manifestation of long-term neurological disorders, including childhood disability such as cerebral palsy, learning disability and behavioral disorders. Advancements in perinatal practice and improved care mean the majority of infants suffering from perinatal brain injury will survive, with many subtle clinical symptoms going undiagnosed until later in life. Hypoxic-ischemia is the dominant cause of perinatal brain injury, and constitutes a significant socioeconomic burden to both developed and developing countries...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28747840/an-evaluation-of-stillbirths-in-%C3%A4-stanbul-by-examining-death-certificates
#5
Aylin Yetim, Fahriye Aysun Buzcu, Esra Devecioğlu, Gülbin Gökçay, Zeynep İnce
AIM: Despite the fact that the frequency of stillbirth is estimated to be about the same as that of early neonatal deaths, stillbirth records and statistics are not kept on a regular basis worldwide and their causes cannot be determined. The aim of our study was to examine the causes and characteristics of stillbirths in Istanbul. MATERIAL AND METHODS: All death certificates of 2011 archived in 8 District Cemetery Directorships, which manage 322 cemeteries within the boundaries of Istanbul Metropolitan Municipality, were examined...
June 2017: Türk Pediatri Arşivi
https://www.readbyqxmd.com/read/28706574/neuronal-damage-induced-by-perinatal-asphyxia-is-attenuated-by-postinjury-glutaredoxin-2-administration
#6
Juan Ignacio Romero, Mariana Inés Holubiec, Tamara Logica Tornatore, Stéphanie Rivière, Eva-Maria Hanschmann, Rodolfo Alberto Kölliker-Frers, Julia Tau, Eduardo Blanco, Pablo Galeano, Fernando Rodríguez de Fonseca, Christopher Horst Lillig, Francisco Capani
The general disruption of redox signaling following an ischemia-reperfusion episode has been proposed as a crucial component in neuronal death and consequently brain damage. Thioredoxin (Trx) family proteins control redox reactions and ensure protein regulation via specific, oxidative posttranslational modifications as part of cellular signaling processes. Trx proteins function in the manifestation, progression, and recovery following hypoxic/ischemic damage. Here, we analyzed the neuroprotective effects of postinjury, exogenous administration of Grx2 and Trx1 in a neonatal hypoxia/ischemia model...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28691322/bile-acid-levels-and-risk-of-adverse-perinatal-outcomes-in-intrahepatic-cholestasis-of-pregnancy-a-meta-analysis
#7
Donghua Cui, Yongxing Zhong, Lin Zhang, Hechun Du
AIM: We aimed to determine the association between maternal total bile acid (TBA) levels and the risks of adverse perinatal outcomes in pregnant women with intrahepatic cholestasis of pregnancy (ICP) based on a meta-analysis study. METHODS: We searched PubMed for articles published from 2000 to 2015 with a focus on ICP and restriction to the English language. The main perinatal outcomes were preterm birth (PTB), meconium-stained amniotic fluid (MSAF), asphyxia, or respiratory distress syndrome (RDS)...
July 10, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28672292/association-between-pregnancy-and-perinatal-outcomes-among-women-with-epilepsy
#8
Neda Razaz, Torbjörn Tomson, Anna-Karin Wikström, Sven Cnattingius
Importance: To date, few attempts have been made to examine associations between exposure to maternal epilepsy with or without antiepileptic drug (AED) therapy and pregnancy and perinatal outcomes. Objectives: To investigate associations between epilepsy in pregnancy and risks of pregnancy and perinatal outcomes as well as whether use of AEDs influenced risks. Design, Setting, and Participants: A population-based cohort study was conducted on all singleton births at 22 or more completed gestational weeks in Sweden from 1997 through 2011; of these, 1 424 279 were included in the sample...
August 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28668289/foley-catheterisation-versus-oral-misoprostol-for-induction-of-labour-in-hypertensive-women-in-india-inform-a-multicentre-open-label-randomised-controlled-trial
#9
Shuchita Mundle, Hillary Bracken, Vaishali Khedikar, Jayashree Mulik, Brian Faragher, Thomas Easterling, Simon Leigh, Paul Granby, Alan Haycox, Mark A Turner, Zarko Alfirevic, Beverly Winikoff, Andrew D Weeks
BACKGROUND: Between 62 000 and 77 000 women die annually from pre-eclampsia and eclampsia. Prompt delivery, preferably by the vaginal route, is vital for good maternal and neonatal outcomes. Two low-cost interventions-low-dose oral misoprostol tablets and transcervical Foley catheterisation-are already used in low-resource settings. We aimed to compare the relative risks and benefits of these interventions. METHODS: We undertook this multicentre, open-label, randomised controlled trial in two public hospitals in Nagpur, India...
August 12, 2017: Lancet
https://www.readbyqxmd.com/read/28664414/do-obstetric-risk-factors-truly-influence-the-etiopathogenesis-of-congenital-muscular-torticollis
#10
N Hardgrib, O Rahbek, B Møller-Madsen, R D Maimburg
BACKGROUND: Congenital muscular torticollis (CMT) is seen in childhood and presents within months after birth. The etiology remains unknown; however, medical textbooks suggest trauma at birth as a main reason. The aim of this study was to systematically describe obstetric and perinatal outcomes in a population of children with a confirmed congenital muscular torticollis diagnosis. MATERIALS AND METHODS: Children with a validated diagnosis of congenital muscular torticollis born at Aarhus University Hospital from 2000 to 2014 were included in the study...
June 29, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28661972/continuous-chest-compressions-during-sustained-inflations-in-a-perinatal-asphyxial-cardiac-arrest-lamb-model
#11
Payam Vali, Praveen Chandrasekharan, Munmun Rawat, Sylvia Gugino, Carmon Koenigsknecht, Justin Helman, Bobby Mathew, Sara Berkelhamer, Jayasree Nair, Satyan Lakshminrusimha
OBJECTIVE: Continuous chest compressions are more effective during resuscitation in adults. Sustained inflation rapidly establishes functional residual capacity in fluid-filled lungs at birth. We sought to compare the hemodynamics and success in achieving return of spontaneous circulation in an asphyxial cardiac arrest lamb model with transitioning fetal circulation and fluid-filled lungs between subjects receiving continuous chest compressions during sustained inflation and those receiving conventional 3:1 compression-to-ventilation resuscitation...
August 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28660484/therapeutic-strategies-for-leukodystrophic-disorders-resulting-from-perinatal-asphyxia-focus-on-myelinating-oligodendrocytes
#12
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/28651815/crystal-clear-cerebral-ultrasound-images-mimicking-acute-asphyxia-in-an-infant-with-primary-hyperoxaluria
#13
Giulia Ardemani, Paul Govaert, Esmee Oussoren, Eiske Dorresteijn, Enno Wildschut, Maarten Lequin, Jeroen Dudink
Genetic deficiencies in enzymes involved in glyoxylate metabolism lead to primary hyperoxaluria (PH) type I, typically characterized by deposition of oxalate crystals in kidneys. A 2-month-old infant was admitted, and was diagnosed with renal failure. Abdominal ultrasound images revealed enlarged and hyperechoic kidneys. Additionally, on cerebral ultrasound (CUS) hyperechoic changes of thalami and basal ganglia were noted, reminiscent of perinatal hypoxic-ischemic brain damage. However, MRI of the brain did not show any abnormal signal intensities compatible with asphyxia...
June 15, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28648366/-oxidative-stress-in-perinatal-asphyxia-and-hypoxic-ischaemic-encephalopathy
#14
Antonio Nuñez, Isabel Benavente, Dorotea Blanco, Héctor Boix, Fernando Cabañas, Mercedes Chaffanel, Belén Fernández-Colomer, José Ramón Fernández-Lorenzo, Begoña Loureiro, María Teresa Moral, Antonio Pavón, Inés Tofé, Eva Valverde, Máximo Vento
Birth asphyxia is one of the principal causes of early neonatal death. In survivors it may evolve to hypoxic-ischaemic encephalopathy and major long-term neurological morbidity. Prolonged and intense asphyxia will lead to energy exhaustion in tissues exclusively dependent on aerobic metabolism, such as the central nervous system. Energy deficit leads to ATP-dependent pumps blockage, with the subsequent loss of neuronal transmembrane potential. The most sensitive areas of the brain will die due to necrosis. In more resistant areas, neuronal hyper-excitability, massive entrance of ionic calcium, activation of NO-synthase, free radical generation, and alteration in mitochondrial metabolism will lead to a secondary energy failure and programmed neuronal death by means of the activation of the caspase pathways...
June 22, 2017: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
https://www.readbyqxmd.com/read/28646492/prenatal-perinatal-and-neonatal-risk-factors-for-perinatal-arterial-ischaemic-stroke-a-systematic-review-and-meta-analysis
#15
REVIEW
C Li, J K Miao, Y Xu, Y Y Hua, Q Ma, L L Zhou, H J Liu, Q X Chen
The aim of the present study was to perform a meta-analysis of published data to determine the significance of clinical factors and exposures to the risk of perinatal arterial ischaemic stroke (PAIS) and provide guidance for clinical diagnosis and treatment. A comprehensive literature search of the PubMed, Embase, MEDLINE and Cochrane Library databases for relevant observational studies (cohort/case-control) from March 1984 to March 2016 was undertaken. Two review authors independently examined the full text records to determine which studies met the inclusion criteria and evaluated risk factors for PAIS...
June 24, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28631256/vulnerability-to-a-metabolic-challenge-following-perinatal-asphyxia-evaluated-by-organotypic-cultures-neonatal-nicotinamide-treatment
#16
R Perez-Lobos, C Lespay-Rebolledo, A Tapia-Bustos, E Palacios, V Vío, D Bustamante, P Morales, M Herrera-Marschitz
The hypothesis of enhanced vulnerability following perinatal asphyxia was investigated with a protocol combining in vivo and in vitro experiments. Asphyxia-exposed (AS) (by 21 min water immersion of foetuses containing uterine horns) and caesarean-delivered control (CS) rat neonates were used at P2-3 for preparing triple organotypic cultures (substantia nigra, neostriatum and neocortex). At DIV 18, cultures were exposed to different concentrations of H2O2 (0.25-45 mM), added to the culture medium for 18 h...
June 19, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28629243/effect-of-therapeutic-hypothermia-on-myocardial-dysfunction-in-term-neonates-with-perinatal-asphyxia-a-randomized-controlled-trial
#17
K Rakesh, B Vishnu Bhat, B Adhisivam, P Ajith
OBJECTIVE: To evaluate the effect of therapeutic hypothermia on myocardial dysfunction in term neonates with perinatal asphyxia. MATERIAL AND METHODS: This randomized controlled trial (RCT) conducted in a tertiary care teaching hospital, south India included 120 newborns with perinatal asphyxia that were randomized to two groups (therapeutic hypothermia and normothermia). Cardiac enzyme profile changes between groups were assessed at 0, 24, 72 h CPK-MB and troponin I levels were estimated by immune inhibition and quantitative immunochromatography methods, respectively...
July 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28623069/neonatal-hypoglycemia-a-wide-range-of-electroclinical-manifestations-and-seizure-outcomes
#18
Ebru Arhan, Zeynep Öztürk, Ayşe Serdaroğlu, Kürşad Aydın, Tuğba Hirfanoğlu, Yılmaz Akbaş
PURPOSE: We examined the various types of epilepsy in children with neonatal hypoglycemia in order to define electroclinical and prognostic features of these patients. METHOD: We retrospectively reviewed the medical records of patients with a history of symptomatic neonatal hypoglycaemia who have been followed at Gazi University Hospital Pediatric Neurology Department between 2006 and 2015. Patients with perinatal asphyxia were excluded. Details of each patient's perinatal history, neurological outcome, epilepsy details, seizure outcome and EEG and brain MRI findings were reviewed...
June 1, 2017: European Journal of Paediatric Neurology: EJPN
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/28595952/trans-resveratrol-enriched-maternal-diet-protects-the-immature-hippocampus-from-perinatal-asphyxia-in-rats
#20
Sebastian Isac, Anca Maria Panaitescu, Ana Spataru, Mara Iesanu, Alexandra Totan, Amalia Udriste, Natalia Cucu, Gheorghe Peltecu, Leon Zagrean, Ana-Maria Zagrean
Trans-resveratrol (tRESV), a polyphenol with antioxidant properties, is common in many food sources, hence easily accessible for study as a maternal dietary supplement in perinatal asphyxia (PA). Hypoxic-ischemic encephalopathy secondary to PA affects especially vulnerable brain areas such as hippocampus and is a leading cause of neonatal morbidity. The purpose of this study is to identify new epigenetic mechanisms of brain inflammation and injury related to PA and to explore the benefit of tRESV enriched maternal diet...
July 13, 2017: Neuroscience Letters
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