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Marret S, Chadie A, Muller JB, Chollat C. [Neurodevelopment and neuroprotection in young children]. GYNECOLOGIE, OBSTETRIQUE, FERTILITE & SENOLOGIE 2024; 52:481-489. [PMID: 38492741 DOI: 10.1016/j.gofs.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 03/08/2024] [Indexed: 03/18/2024]
Abstract
In France, the most pessimistic estimates put the prevalence of neurodevelopmental disorders (NDD) at 15 % of births. The two largest populations of newborns at highest risk of NDD are premature babies and babies born into siblings with one or more infants who already have an autism spectrum disorder or another NDD. The high prevalence of these disorders justifies a health promotion policy, centred on the child and his or her family. Prevention is based on the early identification of high-risk factors, by informing families and training pregnancy and early childhood professionals, and implementing perinatal prevention protocols for high-risk newborns (antenatal corticosteroid therapy and magnesium sulfate for women at risk of preterm delivery before 32 weeks, developmental care, therapeutic hypothermia for full-term infants with early neonatal encephalopathy presumed to be anoxic). Preventing the severity of NDD depends on their early identification, as early as possible in the highest plastic "1000 days" developmental window, a smooth flow of diagnosis and care for mothers and children, and the establishment of an ecosystem that includes multi-modal early intervention, at the best in multi-disciplinary teams such as the early medical and social action centres, support for families through guidance programs and inclusion in the community, first in day-care centers and then in nursery schools.
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Affiliation(s)
- Stéphane Marret
- Service de pédiatrie néonatale et réanimation - neuropédiatrie, hôpital Charles-Nicolle, CHU de Rouen et Unité Inserm 1245, UFR santé de Rouen, université de Normandie, Rouen, France.
| | - Alexandra Chadie
- Service de pédiatrie néonatale et réanimation - neuropédiatrie, hôpital Charles-Nicolle, CHU de Rouen et Unité Inserm 1245, UFR santé de Rouen, université de Normandie, Rouen, France
| | - Jean-Baptiste Muller
- Service de pédiatrie néonatale et réanimation - neuropédiatrie, hôpital Charles-Nicolle, CHU de Rouen et Unité Inserm 1245, UFR santé de Rouen, université de Normandie, Rouen, France
| | - Clément Chollat
- Service de néonatologie, hôpital Armand Trousseau, AP-HP, université Paris Cité, Inserm, NeuroDiderot, Paris, France
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Zhou KQ, Dhillon SK, Bennet L, Davidson JO, Gunn AJ. How do we reach the goal of personalized medicine for neuroprotection in neonatal hypoxic-ischemic encephalopathy? Semin Perinatol 2024:151930. [PMID: 38910063 DOI: 10.1016/j.semperi.2024.151930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Therapeutic hypothermia is now standard of care for neonates with hypoxic-ischemic encephalopathy (HIE) in high income countries (HIC). Conversely, compelling trial evidence suggests that hypothermia is ineffective, and may be deleterious, in low- and middle-income countries (LMIC), likely reflecting the lower proportion of infants who had sentinel events at birth, suggesting that injury had advanced to a stage when hypothermia is no longer effective. Although hypothermia significantly reduced the risk of death and disability in HICs, many infants survived with disability and in principle may benefit from targeted add-on neuroprotective or neurorestorative therapies. The present review will assess biomarkers that could be used to personalize treatment for babies with HIE - to determine first whether an individual infant is likely to respond to hypothermia, and second, whether additional treatments may be beneficial.
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Affiliation(s)
- Kelly Q Zhou
- Dept of Physiology, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Simerdeep K Dhillon
- Dept of Physiology, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Laura Bennet
- Dept of Physiology, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Joanne O Davidson
- Dept of Physiology, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Alistair J Gunn
- Dept of Physiology, The University of Auckland, Private Bag 92019, Auckland, New Zealand.
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3
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Garegrat R, Londhe A, Manerkar S, Fattepur S, Deshmukh L, Joshi A, Chandriah S, Kariyappa M, Devadas S, Ethirajan T, Srivasan K, Kamalarathnam C, Balachandran A, Krishnan E, Sahayaraj D, Bandiya P, Shivanna N, Burgod C, Thayyil A, Alocious A, Lanza M, Muraleedharan P, Pant S, Venkateswaran H, Morales MM, Montaldo P, Krishnan V, Kalathingal T, Joshi AR, Vare A, Patil GC, Satyanathan BP, Hapat P, Deshmukh A, Shivarudhrappa I, Annayappa MK, Baburaj M, Muradi C, Fernandes E, Thale N, Jahan I, Shahidullah M, Choudhury SM, Dey SK, Neogi SB, Banerjee R, Rameh V, Alobeidi F, Grant E, Juul SE, Wilson M, Vita ED, Pressler R, Bassett P, Shankaran S, Thayyil S. Early and extended erythropoietin monotherapy after hypoxic ischaemic encephalopathy: a multicentre double-blind pilot randomised controlled trial. Arch Dis Child Fetal Neonatal Ed 2024:fetalneonatal-2024-327107. [PMID: 38729748 DOI: 10.1136/archdischild-2024-327107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 04/04/2024] [Indexed: 05/12/2024]
Abstract
OBJECTIVE To examine the feasibility of early and extended erythropoietin monotherapy after hypoxic ischaemic encephalopathy (HIE). DESIGN Double-blind pilot randomised controlled trial. SETTING Eight neonatal units in South Asia. PATIENTS Neonates (≥36 weeks) with moderate or severe HIE admitted between 31 December 2022 and 3 May 2023. INTERVENTIONS Erythropoietin (500 U/kg daily) or to the placebo (sham injections using a screen) within 6 hours of birth and continued for 9 days. MRI at 2 weeks of age. MAIN OUTCOMES AND MEASURES Feasibility of randomisation, drug administration and assessment of brain injury using MRI. RESULTS Of the 154 neonates screened, 56 were eligible; 6 declined consent and 50 were recruited; 43 (86%) were inborn. Mean (SD) age at first dose was 4.4 (1.2) hours in erythropoietin and 4.1 (1.0) hours in placebo. Overall mortality at hospital discharge occurred in 5 (19%) vs 11 (46%) (p=0.06), and 3 (13%) vs 9 (40.9%) (p=0.04) among those with moderate encephalopathy in the erythropoietin and placebo groups. Moderate or severe injury to basal ganglia, white matter and cortex occurred in 5 (25%) vs 5 (38.5%); 14 (70%) vs 11 (85%); and 6 (30%) vs 2 (15.4%) in the erythropoietin and placebo group, respectively. Sinus venous thrombosis was seen in two (10%) neonates in the erythropoietin group and none in the control group. CONCLUSIONS Brain injury and mortality after moderate or severe HIE are high in South Asia. Evaluation of erythropoietin monotherapy using MRI to examine treatment effects is feasible in these settings. TRIAL REGISTRATION NUMBER NCT05395195.
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Affiliation(s)
- Reema Garegrat
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
| | - Atul Londhe
- Government Medical College and Hospital Aurangabad, Aurangabad, Maharashtra, India
| | - Swati Manerkar
- Neonatology, Lokmanya Tilak Municipal Medical College and General Hospital, Mumbai, Maharashtra, India
| | | | - Laxmikant Deshmukh
- Government Medical College and Hospital Aurangabad, Aurangabad, Maharashtra, India
| | - Amol Joshi
- Government Medical College and Hospital Aurangabad, Aurangabad, Maharashtra, India
| | | | - Mallesh Kariyappa
- Pediatrics, Bangalore Medical College and Research Institute, Bangalore, Karnataka, India
| | - Sahana Devadas
- Pediatrics, Bangalore Medical College and Research Institute, Bangalore, Karnataka, India
| | | | | | | | | | | | | | - Prathik Bandiya
- Neonatology, Indira Gandhi Institute of Child Health, Bangalore, India
| | - Niranjan Shivanna
- Indira Gandhi Institute of Child Health, Bangalore, Karnataka, India
| | - Constance Burgod
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
| | | | - Annie Alocious
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
| | - Marianna Lanza
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
| | - Pallavi Muraleedharan
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
| | - Stuti Pant
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
| | | | - Maria Moreno Morales
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
| | - Paolo Montaldo
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
| | - Vaisakh Krishnan
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
| | - Thaslima Kalathingal
- Lokmanya Tilak Municipal Medical College and General Hospital, Mumbai, Maharashtra, India
| | - Anagha Rajeev Joshi
- Lokmanya Tilak Municipal Medical College and General Hospital, Mumbai, Maharashtra, India
| | - Ajay Vare
- Government Medical College and Hospital Aurangabad, Aurangabad, Maharashtra, India
| | - G C Patil
- Karnataka Institute of Medical Sciences Hubballi, Hubli, Karnataka, India
| | | | - Pavan Hapat
- Perinatal Brain Research Centre, Hisar, India
| | | | | | | | | | | | | | | | - Ismat Jahan
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Dhaka District, Bangladesh
| | | | | | - Sanjoy Kumer Dey
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Dhaka District, Bangladesh
| | - Sutapa B Neogi
- International Institute of Health Management Research-New Delhi, New Delhi, Delhi, India
| | - Rupsa Banerjee
- International Institute of Health Management Research-New Delhi, New Delhi, Delhi, India
| | - Vanessa Rameh
- Medicine and Radiology, Harvard University, Cambridge, Massachusetts, USA
| | | | - Ellen Grant
- Medicine and Radiology, Harvard University, Cambridge, Massachusetts, USA
| | | | | | - Enrico De Vita
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | | | | | - Seetha Shankaran
- Pediatrics/Neonatology, University of Texas at Austin Dell Seton Medical Center, Austin, Texas, USA
| | - Sudhin Thayyil
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, UK
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Dong J, Dong Y, An L, Wang Y, Li Y, Jin L. The role of the sensory input intervention in recovery of the motor function in hypoxic ischemic encephalopathy rat model. J Neurophysiol 2024; 131:865-871. [PMID: 38568478 DOI: 10.1152/jn.00054.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/12/2024] [Accepted: 03/24/2024] [Indexed: 05/01/2024] Open
Abstract
Motor disturbances predominantly characterize hypoxic-ischemic encephalopathy (HIE). Among its intervention methods, environmental enrichment (EE) is strictly considered a form of sensory intervention. However, limited research uses EE as a single sensory input intervention to validate outcomes postintervention. A Sprague-Dawley rat model subjected to left common carotid artery ligation and exposure to oxygen-hypoxic conditions is used in this study. EE was achieved by enhancing the recreational and stress-relief items within the cage, increasing the duration of sunlight, colorful items exposure, and introducing background music. JZL184 (JZL) was administered as neuroprotective drugs. EE was performed 21 days postoperatively and the rats were randomly assigned to the standard environment and EE groups, the two groups were redivided into control, JZL, and vehicle injection subgroups. The Western blotting and behavior test indicated that EE and JZL injections were efficacious in promoting cognitive function in rats following HIE. In addition, the motor function performance in the EE-alone intervention group and the JZL-alone group after HIE was significantly improved compared with the control group. The combined EE and JZL intervention group exhibited even more pronounced improvements in these performances. EE may enhance motor function through sensory input different from the direct neuroprotective effect of pharmacological treatment.NEW & NOTEWORTHY Rarely does literature assess motor function, even though it is common after hypoxia ischemic encephalopathy (HIE). Previously used environmental enrichment (EE) components have not been solely used as sensory inputs. Physical factors were minimized in our study to observe the effects of purely sensory inputs.
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Affiliation(s)
- Juchuan Dong
- Department of Rehabilitation Medicine, Second Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Yifei Dong
- Department of Rehabilitation Medicine, Kunming Medical University, Kunming, People's Republic of China
| | - Lijuan An
- Department of Rehabilitation Medicine, Kunming Medical University, Kunming, People's Republic of China
| | - Yufan Wang
- Department of Rehabilitation Medicine, Kunming Medical University, Kunming, People's Republic of China
| | - Yongmei Li
- Department of Rehabilitation Medicine, Second Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Lihua Jin
- Department of Rehabilitation Medicine, Second Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
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Chen X, Chen A, Wei J, Huang Y, Deng J, Chen P, Yan Y, Lin M, Chen L, Zhang J, Huang Z, Zeng X, Gong C, Zheng X. Dexmedetomidine alleviates cognitive impairment by promoting hippocampal neurogenesis via BDNF/TrkB/CREB signaling pathway in hypoxic-ischemic neonatal rats. CNS Neurosci Ther 2024; 30:e14486. [PMID: 37830170 PMCID: PMC10805444 DOI: 10.1111/cns.14486] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 09/19/2023] [Accepted: 09/20/2023] [Indexed: 10/14/2023] Open
Abstract
AIMS Dexmedetomidine (DEX) has been reported to alleviate hypoxic-ischemic brain damage (HIBD) in neonates. This study aimed to investigate whether DEX improves cognitive impairment by promoting hippocampal neurogenesis via the BDNF/TrkB/CREB signaling pathway in neonatal rats with HIBD. METHODS HIBD was induced in postnatal day 7 rats using the Rice-Vannucci method, and DEX (25 μg/kg) was administered intraperitoneally immediately after the HIBD induction. The BDNF/TrkB/CREB pathway was regulated by administering the TrkB receptor antagonist ANA-12 through intraperitoneal injection or by delivering adeno-associated virus (AAV)-shRNA-BDNF via intrahippocampal injection. Western blot was performed to measure the levels of BDNF, TrkB, and CREB. Immunofluorescence staining was utilized to identify the polarization of astrocytes and evaluate the levels of neurogenesis in the dentate gyrus of the hippocampus. Nissl and TTC staining were performed to evaluate the extent of neuronal damage. The MWM test was conducted to evaluate spatial learning and memory ability. RESULTS The levels of BDNF and neurogenesis exhibited a notable decrease in the hippocampus of neonatal rats after HIBD, as determined by RNA-sequencing technology. Our results demonstrated that treatment with DEX effectively increased the protein expression of BDNF and the phosphorylation of TrkB and CREB, promoting neurogenesis in the dentate gyrus of the hippocampus in neonatal rats with HIBD. Specifically, DEX treatment significantly augmented the expression of BDNF in hippocampal astrocytes, while decreasing the proportion of detrimental A1 astrocytes and increasing the proportion of beneficial A2 astrocytes in neonatal rats with HIBD. Furthermore, inhibiting the BDNF/TrkB/CREB pathway using either ANA-12 or AAV-shRNA-BDNF significantly counteracted the advantageous outcomes of DEX on hippocampal neurogenesis, neuronal survival, and cognitive improvement. CONCLUSIONS DEX promoted neurogenesis in the hippocampus by activating the BDNF/TrkB/CREB pathway through the induction of polarization of A1 astrocytes toward A2 astrocytes, subsequently mitigating neuronal damage and cognitive impairment in neonates with HIBD.
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Affiliation(s)
- Xiaohui Chen
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Andi Chen
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Jianjie Wei
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Yongxin Huang
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Jianhui Deng
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Pinzhong Chen
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Yanlin Yan
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Mingxue Lin
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Lifei Chen
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Jiuyun Zhang
- Fujian Provincial Key Laboratory of Emergency MedicineFuzhouChina
| | - Zhibin Huang
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Xiaoqian Zeng
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Cansheng Gong
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
| | - Xiaochun Zheng
- Department of AnesthesiologyShengli Clinical Medical College of Fujian Medical University, Fujian Provincial HospitalFuzhouChina
- Fujian Provincial Key Laboratory of Emergency MedicineFuzhouChina
- Fujian Emergency Medical Center, Fujian Provincial Key Laboratory of Critical Care MedicineFujian Provincial Co‐Constructed Laboratory of “Belt and Road”FuzhouChina
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Ranjan AK, Gulati A. Advances in Therapies to Treat Neonatal Hypoxic-Ischemic Encephalopathy. J Clin Med 2023; 12:6653. [PMID: 37892791 PMCID: PMC10607511 DOI: 10.3390/jcm12206653] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Neonatal hypoxic-ischemic encephalopathy (HIE) is a condition that results in brain damage in newborns due to insufficient blood and oxygen supply during or after birth. HIE is a major cause of neurological disability and mortality in newborns, with over one million neonatal deaths occurring annually worldwide. The severity of brain injury and the outcome of HIE depend on several factors, including the cause of oxygen deprivation, brain maturity, regional blood flow, and maternal health conditions. HIE is classified into mild, moderate, and severe categories based on the extent of brain damage and resulting neurological issues. The pathophysiology of HIE involves different phases, including the primary phase, latent phase, secondary phase, and tertiary phase. The primary and secondary phases are characterized by episodes of energy and cell metabolism failures, increased cytotoxicity and apoptosis, and activated microglia and inflammation in the brain. A tertiary phase occurs if the brain injury persists, characterized by reduced neural plasticity and neuronal loss. Understanding the cellular and molecular aspects of the different phases of HIE is crucial for developing new interventions and therapeutics. This review aims to discuss the pathophysiology of HIE, therapeutic hypothermia (TH), the only approved therapy for HIE, ongoing developments of adjuvants for TH, and potential future drugs for HIE.
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Affiliation(s)
- Amaresh K Ranjan
- Research and Development, Pharmazz Inc., Willowbrook, IL 60527, USA
| | - Anil Gulati
- Research and Development, Pharmazz Inc., Willowbrook, IL 60527, USA
- Department of Bioengineering, The University of Illinois at Chicago, Chicago, IL 60607, USA
- College of Pharmacy, Midwestern University, Downers Grove, IL 60515, USA
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Korf JM, McCullough LD, Caretti V. A narrative review on treatment strategies for neonatal hypoxic ischemic encephalopathy. Transl Pediatr 2023; 12:1552-1571. [PMID: 37692539 PMCID: PMC10485647 DOI: 10.21037/tp-23-253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 08/08/2023] [Indexed: 09/12/2023] Open
Abstract
Background and Objective Hypoxic-ischemic encephalopathy (HIE) is a leading cause of death and disability worldwide. Therapeutic hypothermia (TH) represents a significant achievement in the translation of scientific research to clinical application, but it is currently the only neuroprotective treatment for HIE. This review aims to revisit the use of TH for HIE and its longitudinal impact on patient outcomes to readers new to the field of HIE. We discuss how emerging therapies address the broader pathophysiology of injury progression in the neonatal brain days to years after HIE. Methods We included full articles and book chapters published in English on PubMed with references to "hypoxic ischemic encephalopathy", "birth asphyxia", "therapeutic hypothermia", or "neonatal encephalopathy". We limited our review to outcomes on term infants and to new therapeutics that are in the second phase of clinical trials. Key Content and Findings Despite the use of TH for HIE, mortality remains high. Analysis of longitudinal studies reveals a high incidence of ongoing disability even with the implementation of TH. New therapeutics addressing the secondary phase and the less understood tertiary phase of brain injury are in clinical trials as adjunctive treatments to TH to support additional neurological repair and regeneration. Conclusions TH successfully improves outcomes after HIE, and it continues to be optimized. Larger studies are needed to understand its use in mild cases of HIE and if certain factors, such as sex, affect long term outcomes. TH primarily acts in the initial phases of injury, while new pharmaceutical therapies target additional injury pathways into the tertiary phases of injury. This may allow for more effective approaches to treatment and improvement of long-term functional outcomes after HIE.
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Affiliation(s)
- Janelle M. Korf
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX, USA
| | - Louise D. McCullough
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX, USA
| | - Viola Caretti
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX, USA
- Department of Pediatrics, Section of Pediatric Neurology and Developmental Neuroscience, Baylor College of Medicine, Houston, TX, USA
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