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Neonatal asphyxia

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https://www.readbyqxmd.com/read/28718955/an-electrochemiluminescent-method-for-glutamate-measurement-in-small-microdialysate-samples-in-asphyxiated-young-rats
#1
Jorge Ortega-Ibarra, Silvia López-Pérez, Alberto Morales-Villagrán
Glutamate (Glu) quantification has been performed by a combination of intracerebral microdialysis through which the samples are obtained and analyzed by high performance liquid chromatography (HPLC); its measurement requires a large expenditure of time (15-30 min per sample) and special training. Therefore, an alternative method is presented here, based on the electrochemiluminescence produced by the use of an enzymatic reactor, containing glutamate-oxidase, mixed and incubated with microdialysate from dorsal striatum (DS) and prefrontal cortex (PFC) of young rats asphyxiated during the neonatal period, under a global asphyxia model in order to test this method...
July 18, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/28706574/neuronal-damage-induced-by-perinatal-asphyxia-is-attenuated-by-postinjury-glutaredoxin-2-administration
#2
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/28672292/association-between-pregnancy-and-perinatal-outcomes-among-women-with-epilepsy
#3
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...
July 3, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28671322/factors-related-to-retinal-haemorrhage-in-infants-born-at-high-risk
#4
Qinglan Pu, Ping Li, Huiqin Jiang, Hong Wang, Qiaoyun Zhou, Jia Liu, Wenhua Zhong, Huafei Huang
PURPOSE: This study aims to determine risk factors for retinal haemorrhage (RH) in high-risk infants. METHODS: A total of 3123 cases with high-risk pregnancy and/or neonatal asphyxia 72 hr after delivery were enrolled into this study. Fundus examinations were performed on newborns utilizing a wide-angle imaging system (RetCam III). Retinal haemorrhage (RH) was classified into three grades. Maternal, obstetric and neonatal parameters from high-risk infants with RH were compared with parameters from infants without RH...
July 3, 2017: Acta Ophthalmologica
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
#5
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...
June 28, 2017: Lancet
https://www.readbyqxmd.com/read/28664414/do-obstetric-risk-factors-truly-influence-the-etiopathogenesis-of-congenital-muscular-torticollis
#6
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/28660484/therapeutic-strategies-for-leukodystrophic-disorders-resulting-from-perinatal-asphyxia-focus-on-myelinating-oligodendrocytes
#7
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/28658372/leading-causes-of-child-mortality-in-brazil-in-1990-and-2015-estimates-from-the-global-burden-of-disease-study
#8
Elisabeth Barboza França, Sônia Lansky, Maria Albertina Santiago Rego, Deborah Carvalho Malta, Julia Santiago França, Renato Teixeira, Denise Porto, Marcia Furquim de Almeida, Maria de Fatima Marinho de Souza, Célia Landman Szwarcwald, Meghan Mooney, Mohsen Naghavi, Ana Maria Nogales Vasconcelos
Objective: To analyze under-5 mortality rates and leading causes in Brazil and states in 1990 and 2015, using the Global Burden of Disease Study (GBD) 2015 estimates. Methods: The main sources of data for all-causes under-5 mortality and live births estimates were the mortality information system, surveys, and censuses. Proportions and rates per 1,000 live births (LB) were calculated for total deaths and leading causes. Results: Estimates of under-5 deaths in Brazil were 191,505 in 1990, and 51,226 in 2015, 90% of which were infant deaths...
May 2017: Revista Brasileira de Epidemiologia, Brazilian Journal of Epidemiology
https://www.readbyqxmd.com/read/28651611/adolescent-deliveries-in-semi-urban-cameroon-prevalence-and-adverse-neonatal-outcomes
#9
Tsi Njim, Valirie Ndip Agbor
OBJECTIVES: Adolescent pregnancies are high risk due to the increased probability of adverse outcomes; as adolescents are usually considered to be ill-equipped to deal with the burden of pregnancy. We sought to determine the prevalence of adolescent deliveries in a secondary-level care hospital in semi-urban Cameroon-Bamenda, the adverse neonatal outcomes and to assess if previous obstetric history could preclude adolescents from having adverse outcomes in their present pregnancy. RESULTS: The prevalence of adolescent deliveries was 8...
June 26, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28648366/-oxidative-stress-in-perinatal-asphyxia-and-hypoxic-ischaemic-encephalopathy
#10
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
#11
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/28631394/helping-babies-breathe-implementation-in-zanzibar-tanzania
#12
Gina Marie Wilson, Ame Masemo Ame, Maimuna Mohamed Khatib, Elizabeth K Rende, Ann Michelle Hartman, Jane Blood-Siegfried
AIM: To assess the efficacy and feasibility of implementing Helping Babies Breathe, a neonatal resuscitation programme for resource-limited environments. BACKGROUND: This quality improvement project focused on training midwives on Helping Babies Breathe to address high rates of neonatal mortality secondary to birth asphyxia. METHODS: The convenience sample was 33 midwives in Zanzibar, Tanzania. The train-the-trainer strategy with repeated measures design was used to assess knowledge and skills at 3 time points...
June 19, 2017: International Journal of Nursing Practice
https://www.readbyqxmd.com/read/28631256/vulnerability-to-a-metabolic-challenge-following-perinatal-asphyxia-evaluated-by-organotypic-cultures-neonatal-nicotinamide-treatment
#13
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/28629251/neonatal-complications-amoung-596-infants-delivered-by-vacuum-extraction-in-relation-to-characteristics-of-the-extraction
#14
Cecilia Ekéus, Karin Wrangsell, Sandra Penttinen, Katarina Åberg
OBJECTIVE: To investigate the association between complicated vacuum extraction deliveries and neonatal complications. METHODS: Observational study including data on the management of 596 consecutive VE-deliveries at 6 different birth clinics in Sweden in 2013. We used logistic regression to examine the association between a complicated VE and: extracranial bleeding, severe neonatal complication (intracranial hemorrhage and/or asphyxia/low Apgar score and/or convulsions, and/or encephalopathy) and brachial plexus injury...
June 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28629246/clinical-significance-of-primary-symptoms-in-women-with-placental-abruption
#15
Youwen Mei, Yonghong Lina
BACKGROUND: To evaluate the clinical significance of primary symptoms in women with placental abruption. METHODS: A retrospective study of 273 cases of placental abruption was performed. The subjects were classified into 2 groups according to primary symptoms: 210 cases of vaginal bleeding group and 63 cases of abdominal pain group. The clinical features, maternal and neonatal outcomes were compared between two groups. RESULTS: The incidence of preeclampsia and preterm birth in vaginal bleeding group was significantly lower than abdominal pain group, while the incidence of premature rupture of membrane (PROM) in the former group was higher than that in the latter group...
June 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28629243/effect-of-therapeutic-hypothermia-on-myocardial-dysfunction-in-term-neonates-with-perinatal-asphyxia-a-randomized-controlled-trial
#16
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
#17
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/28622146/relationship-between-various-maternal-conditions-and-lactic-acid-dehydrogenase-activity-in-umbilical-cord-blood-at-birth
#18
Evangelos Patavoukas, Josefina Åberg-Liesaho, Cecilia Pegelow Halvorsen, Birger Winbladh, Eva Wiberg-Itzel
BACKGROUND: Lactic acid dehydrogenase (LDH) is a valuable marker for some of the most important diseases in newborns and the plasma LDH activity in newborns correlates well with conditions such as asphyxia. If LDH should be considered as a useful tool also in obstetric care, key factors associated with maternal health before and during pregnancy which could affect umbilical cord LDH activity need to be known. The aims of this study were to explore relationships between selected maternal conditions and arterial lactic acid dehydrogenase activity (aLDH) in umbilical cord blood at delivery...
June 15, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28619605/the-prognostic-value-of-proton-magnetic-resonance-spectroscopy-in-term-newborns-treated-with-therapeutic-hypothermia-following-asphyxia
#19
Paul E Sijens, Katharina Wischniowsky, Hendrik J Ter Horst
OBJECTIVE: The purpose of this study was to correlate brain metabolism assessed shortly after therapeutic hyperthermia by (1)H magnetic resonance spectroscopy (MRS), with neurodevelopmental outcome. METHODS: At the age of 6.0±1.8days, brain metabolites of 35 term asphyxiated newborns, treated with therapeutic hypothermia, were quantified by multivoxel proton MRS of a volume cranial to the corpus callosum, containing both gray and white matter. At the age of 30months the Bayley Scale of Infant Development-III was performed...
June 12, 2017: Magnetic Resonance Imaging
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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