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Puerta-Martínez AG, López-Garrido E, Guerrero-Nava JM, Vargas-Ruiz R, Martínez-Padrón HY. Risk factors associated with intraventricular hemorrhage in very-low-birth-weight premature infants. Childs Nerv Syst 2024; 40:1743-1750. [PMID: 38349525 DOI: 10.1007/s00381-024-06310-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 01/29/2024] [Indexed: 05/23/2024]
Abstract
PURPOSE To analyze the association between risk factors and severe intraventricular hemorrhage (grade II-IV) in PNB under 1500 g. METHODS Multicenter, retrospective, analytical, case-control study in PNB under 34 weeks and under 1500 g admitted to the NICU. CASE PNB with severe intraventricular hemorrhage (grade II-IV). Logistic regression analysis was used to adjust for IVH-associated variables and odds ratios (OR). RESULTS A total of 90 PNB files were analyzed, 45 cases and 45 controls. The highest risk factors for severe IVH were lower gestational age (OR 1.3, p < 0.001), perinatal asphyxia (OR 12, p < 0.001), Apgar < 6 at minute 1 and 5 (OR 6.3, p < 0.001). CONCLUSION Lower gestational age, birth asphyxia, Apgar score lower of 6, and respiratory-type factors are associated with increased risk for severe IVH.
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Affiliation(s)
| | - Esteban López-Garrido
- Unidad de Cuidados Intensivos, Hospital Regional de Alta Especialidad "Bicentenario, 2010", Cd. Victoria, México
| | | | - Rodrigo Vargas-Ruiz
- Dirección Médica, Hospital Regional de Alta Especialidad "Bicentenario, 2010", Cd. Victoria, México
- Unidad Académica Multidisciplinaria Mante, Universidad Autónoma de Tamaulipas, Cd. Mante, Tamaulipas, México
| | - Hadassa Yuef Martínez-Padrón
- Hospital Regional de Alta Especialidad de Ciudad Victoria "Bicentenario 2010", Libramiento Guadalupe Victoria S/N, Área de Pajaritos, Cd. Victoria, C.P. 87087, Tamaulipas, México.
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Deng Z, Tang J, Fang C, Zhang BH. Development and validation of a diagnostic prediction model for severe periventricular-intraventricular hemorrhage in newborns: insights from a retrospective analysis utilizing the MIMIC-III database. J Pediatr (Rio J) 2024; 100:327-334. [PMID: 38342483 PMCID: PMC11065675 DOI: 10.1016/j.jped.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 02/13/2024] Open
Abstract
OBJECTIVE Periventricular-intraventricular hemorrhage is the most common type of intracranial bleeding in newborns, especially in the first 3 days after birth. Severe periventricular-intraventricular hemorrhage is considered a progression from mild periventricular-intraventricular hemorrhage and is often closely associated with severe neurological sequelae. However, no specific indicators are available to predict the progression from mild to severe periventricular-intraventricular in early admission. This study aims to establish an early diagnostic prediction model for severe PIVH. METHOD This study was a retrospective cohort study with data collected from the MIMIC-III (v1.4) database. Laboratory and clinical data collected within the first 24 h of NICU admission have been used as variables for both univariate and multivariate logistic regression analyses to construct a nomogram-based early prediction model for severe periventricular-intraventricular hemorrhage and subsequently validated. RESULTS A predictive model was established and represented by a nomogram, it comprised three variables: output, lowest platelet count and use of vasoactive drugs within 24 h of NICU admission. The model's predictive performance showed by the calculated area under the curve was 0.792, indicating good discriminatory power. The calibration plot demonstrated good calibration between observed and predicted outcomes, and the Hosmer-Lemeshow test showed high consistency (p = 0.990). Internal validation showed the calculated area under a curve of 0.788. CONCLUSIONS This severe PIVH predictive model, established by three easily obtainable indicators within the NICU, demonstrated good predictive ability. It offered a more user-friendly and convenient option for neonatologists.
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Affiliation(s)
- Zhiyue Deng
- Department of Neonatology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jiaxin Tang
- Department of Neonatology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Chengzhi Fang
- Department of Neonatology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Bing-Hong Zhang
- Department of Neonatology, Renmin Hospital of Wuhan University, Wuhan, China.
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Zhou KQ, Dhillon SK, Davidson JO, Gunn AJ. Could we detect intraventricular hemorrhage before it happens? Pediatr Res 2024:10.1038/s41390-024-03202-7. [PMID: 38594424 DOI: 10.1038/s41390-024-03202-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 03/25/2024] [Indexed: 04/11/2024]
Affiliation(s)
- Kelly Q Zhou
- Department of Physiology, The University of Auckland, Auckland, New Zealand
| | | | - Joanne O Davidson
- Department of Physiology, The University of Auckland, Auckland, New Zealand
| | - Alistair J Gunn
- Department of Physiology, The University of Auckland, Auckland, New Zealand.
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4
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Denicol MM, Leotti VB, de Soares CRS, Hilgert JB. Early-onset neonatal sepsis as a risk factor for peri-intraventricular hemorrhage in premature infants. REVISTA BRASILEIRA DE EPIDEMIOLOGIA 2024; 27:e240013. [PMID: 38511823 PMCID: PMC10946291 DOI: 10.1590/1980-549720240013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/14/2023] [Accepted: 01/05/2024] [Indexed: 03/22/2024] Open
Abstract
OBJECTIVE To assess early-onset sepsis as a risk factor of peri-intraventricular hemorrhage in premature infants born at less than or equal to 34 weeks' gestation and admitted to a neonatal intensive care unit (NICU). METHODS This retrospective cohort study included premature patients born at less than or equal to 34 weeks' gestation who were admitted to the NICU of a tertiary hospital in southern Brazil, and born from January 2017 to July 2021. Data were collected from patients' medical records. Early-onset sepsis was measured according to the presence or absence of diagnosis within the first 72 hours of life, whereas the outcome, peri-intraventricular hemorrhage, was described as the presence or absence of hemorrhage, regardless of its grade. RESULTS Hazard ratios were calculated using Cox regression models. A total of 487 patients were included in the study, of which 169 (34.7%) had some degree of peri-intraventricular hemorrhage. Early-onset sepsis was present in 41.6% of the cases of peri-intraventricular hemorrhage, which revealed a significant association between these variables, with increased risk of the outcome in the presence of sepsis. In the final multivariate model, the hazard ratio for early-onset sepsis was 1.52 (95% confidence interval 1.01-2.27). CONCLUSION Early-onset sepsis and the use of surfactants showed to increase the occurrence of the outcome in premature children born at less than or equal to 34 weeks' gestation. Meanwhile, factors such as antenatal corticosteroids and gestational age closer to 34 weeks' gestations were found to reduce the risk of peri-intraventricular hemorrhage.
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Affiliation(s)
- Mariana Martins Denicol
- Universidade Federal do Rio Grande do Sul, Postgraduate Program in Epidemiology – Porto Alegre (RS), Brazil
| | - Vanessa Bielefeldt Leotti
- Universidade Federal do Rio Grande do Sul, Postgraduate Program in Epidemiology – Porto Alegre (RS), Brazil
| | | | - Juliana Balbinot Hilgert
- Universidade Federal do Rio Grande do Sul, Postgraduate Program in Epidemiology – Porto Alegre (RS), Brazil
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Atienza-Navarro I, Del Marco A, Alves-Martinez P, Garcia-Perez MDLA, Raya-Marin A, Benavente-Fernandez I, Gil C, Martinez A, Lubian-Lopez S, Garcia-Alloza M. Glycogen Synthase Kinase-3β Inhibitor VP3.15 Ameliorates Neurogenesis, Neuronal Loss and Cognitive Impairment in a Model of Germinal Matrix-intraventricular Hemorrhage of the Preterm Newborn. Transl Stroke Res 2024:10.1007/s12975-023-01229-2. [PMID: 38231413 DOI: 10.1007/s12975-023-01229-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/24/2023] [Accepted: 12/18/2023] [Indexed: 01/18/2024]
Abstract
Advances in neonatology have significantly reduced mortality rates due to prematurity. However, complications of prematurity have barely changed in recent decades. Germinal matrix-intraventricular hemorrhage (GM-IVH) is one of the most severe complications of prematurity, and these children are prone to suffer short- and long-term sequelae, including cerebral palsy, cognitive and motor impairments, or neuropsychiatric disorders. Nevertheless, GM-IVH has no successful treatment. VP3.15 is a small, heterocyclic molecule of the 5-imino-1,2,4-thiadiazole family with a dual action as a phosphodiesterase 7 and glycogen synthase kinase-3β (GSK-3β) inhibitor. VP3.15 reduces neuroinflammation and neuronal loss in other neurodegenerative disorders and might ameliorate complications associated with GM-IVH. We administered VP3.15 to a mouse model of GM-IVH. VP3.15 reduces the presence of hemorrhages and microglia in the short (P14) and long (P110) term. It ameliorates brain atrophy and ventricle enlargement while limiting tau hyperphosphorylation and neuronal and myelin basic protein loss. VP3.15 also improves proliferation and neurogenesis as well as cognition after the insult. Interestingly, plasma gelsolin levels, a feasible biomarker of brain damage, improved after VP3.15 treatment. Altogether, our data support the beneficial effects of VP3.15 in GM-IVH by ameliorating brain neuroinflammatory, vascular and white matter damage, ultimately improving cognitive impairment associated with GM-IVH.
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Affiliation(s)
- Isabel Atienza-Navarro
- Division of Physiology, School of Medicine, University of Cadiz, C/Dr. Marañon 3, 3rd Floor, 11002, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital, Cadiz, Spain
| | - Angel Del Marco
- Division of Physiology, School of Medicine, University of Cadiz, C/Dr. Marañon 3, 3rd Floor, 11002, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital, Cadiz, Spain
| | - Pilar Alves-Martinez
- Division of Physiology, School of Medicine, University of Cadiz, C/Dr. Marañon 3, 3rd Floor, 11002, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital, Cadiz, Spain
| | | | - Alvaro Raya-Marin
- Biomedical Research and Innovation Institute of Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital, Cadiz, Spain
| | - Isabel Benavente-Fernandez
- Area of Pediatrics, Department of Child and Mother Health and Radiology, School of Medicine, University of Cadiz, Cadiz, Spain
- Section of Neonatology, Division of Pediatrics, Puerta del Mar University Hospital, Avda. Ana de Viya sn, 11007, Cadiz, Spain
| | - Carmen Gil
- Centro de Investigaciones, Biologicas Margarita Salas-CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Ana Martinez
- Centro de Investigaciones, Biologicas Margarita Salas-CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
- Centro de Investigaciones Biomedicas en Red en Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Avda. Monforte de Lemos 3-5, 28029, Madrid, Spain
| | - Simon Lubian-Lopez
- Area of Pediatrics, Department of Child and Mother Health and Radiology, School of Medicine, University of Cadiz, Cadiz, Spain.
- Section of Neonatology, Division of Pediatrics, Puerta del Mar University Hospital, Avda. Ana de Viya sn, 11007, Cadiz, Spain.
| | - Monica Garcia-Alloza
- Division of Physiology, School of Medicine, University of Cadiz, C/Dr. Marañon 3, 3rd Floor, 11002, Cadiz, Spain.
- Biomedical Research and Innovation Institute of Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital, Cadiz, Spain.
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Li L, Liu T, Shi Y. Treatment of preterm brain injury via gut-microbiota-metabolite-brain axis. CNS Neurosci Ther 2024; 30:e14556. [PMID: 38108213 PMCID: PMC10805406 DOI: 10.1111/cns.14556] [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: 08/31/2023] [Revised: 11/06/2023] [Accepted: 11/23/2023] [Indexed: 12/19/2023] Open
Abstract
BACKGROUND Brain injury in preterm infants potentially disrupts critical structural and functional connective networks in the brain. It is a major cause of neurological sequelae and developmental deficits in preterm infants. Interesting findings suggest that the gut microbiota (GM) and their metabolites contribute to the programming of the central nervous system (CNS) during developmental stages and may exert structural and functional effects throughout the lifespan. AIM To summarize the existing knowledge of the potential mechanisms related to immune, endocrine, neural, and blood-brain barrier (BBB) mediated by GM and its metabolites in neural development and function. METHODS We review the recent literature and included 150 articles to summarize the mechanisms through which GM and their metabolites work on the nervous system. Potential health benefits and challenges of relevant treatments are also discussed. RESULTS This review discusses the direct and indirect ways through which the GM may act on the nervous system. Treatment of preterm brain injury with GM or related derivatives, including probiotics, prebiotics, synbiotics, dietary interventions, and fecal transplants are also included. CONCLUSION This review summarizes mechanisms underlying microbiota-gut-brain axis and novel therapeutic opportunities for neurological sequelae in preterm infants. Optimizing the initial colonization and microbiota development in preterm infants may represent a novel therapy to promote brain development and reduce long-term sequelae.
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Affiliation(s)
- Ling Li
- Department of PediatricsShengjing Hospital of China Medical UniversityShenyangChina
| | - Tianjing Liu
- Department of PediatricsShengjing Hospital of China Medical UniversityShenyangChina
| | - Yongyan Shi
- Department of PediatricsShengjing Hospital of China Medical UniversityShenyangChina
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Nguyen TT, Nguyen DTN, Pham TTT, Oei JL. Prophylaxis of Patent Ductus Arteriosus with Paracetamol in Extremely Low Gestational Age Newborns (ELGANs): A Single-Institution Observational Study in Vietnam. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1934. [PMID: 38136136 PMCID: PMC10741618 DOI: 10.3390/children10121934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023]
Abstract
INTRODUCTION Prophylactic paracetamol for extremely low gestation age neonates (ELGAN, <27 weeks' gestation) with symptomatic patent ductus arteriosus (sPDA) in high-income countries (HIC) reduces medical and surgical interventions. Its effectiveness in low-to-middle-income countries (LMIC) remains uncertain. This study assesses prophylactic paracetamol's impact on sPDA interventions in ELGANs in an LMIC. METHODS This is a retrospective cohort study that compared a historical cohort of ELGANs that were treated with oral ibuprofen or intravenous paracetamol after diagnosis of sPDA (n = 104) with infants (n = 76) treated with prophylactic paracetamol (20 mg/kg loading, 7.5 mg/kg qid for 4 days), in a tertiary neonatal intensive care unit (NICU) in Vietnam. Oral ibuprofen or intravenous therapeutic paracetamol were administered if prophylactic paracetamol failed to close sPDA. Surgical ligation was conducted if targeted medical intervention failed, or the infant deteriorated from conditions attributable to sPDA. RESULTS In the historical cohort, 57 (55%) infants died within 7 days of life compared to 18 (24%) from the prophylactic cohort (p < 0.01). Of the survivors, 21 (45%) of the historical and 23 (39.7%) of the prophylactic cohort required surgical ligation (p = 0.6). Duration of hospitalization for survivors was lower in the prophylactic cohort (mean 74 vs. 97 days, p = 0.01). In the prophylactic cohort, 24 (41%) infants did not need further treatment while 34 (59%) required further treatment including ibuprofen and/or paracetamol 28 (48%) and surgical ligation 22 (38%). CONCLUSIONS Prophylactic paracetamol for ELGAN in LMIC does not reduce the need for surgical ligation, sPDA rates, and other PDA-related morbidities in infants who survive beyond 7 days of age. It may reduce the risk of death and the duration of hospitalization but further study into the reasons behind this need to be determined with larger studies.
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Affiliation(s)
- Tinh Thu Nguyen
- Department of Pediatrics, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam;
- Neonatal Intensive Care Unit, Children’s Hospital 2, Ho Chi Minh City 700000, Vietnam
| | - Dung Thi Ngoc Nguyen
- Pediatric and Neonatology Department, Franco-Vietnamese Hospital, Ho Chi Minh City 700000, Vietnam;
| | - Tam Thi Thanh Pham
- Neonatal Intensive Care Unit, Children’s Hospital 1, Ho Chi Minh City 700000, Vietnam;
| | - Ju-Lee Oei
- School of Women’s and Children’s Health, Faculty of Medicine, University of New South Wales, Sydney, NSW 2031, Australia
- Department of Newborn Care, The Royal Hospital for Women, Randwick, Sydney, NSW 2031, Australia
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Pande GS, Vagha JD. A Review of the Occurrence of Intraventricular Hemorrhage in Preterm Newborns and its Future Neurodevelopmental Consequences. Cureus 2023; 15:e48968. [PMID: 38111458 PMCID: PMC10726079 DOI: 10.7759/cureus.48968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/17/2023] [Indexed: 12/20/2023] Open
Abstract
Intraventricular hemorrhage (IVH) is a type of bleeding that occurs through the germinal matrix and comes through the ependymal cells into the ventricular cavity. It is mostly seen in preterm neonates but can also be seen sometimes in term neonates. Various factors predispose to preterm delivery; it can be spontaneous or medically induced. Spontaneous IVH occurs in cases of intrauterine infections in the mother, and it can be induced in cases of medical emergencies such as preeclampsia and eclampsia. The brain of a preterm newborn is not fully developed as it does not have pericytes and proteins, so it can bleed very quickly, which can cause IVH. Also, the vessels supplying the germinal matrix are immature and highly vascularized. IVH has four grades based on findings detected on cranial ultrasound and MRI. Management includes medical and surgical management; medical management includes phenobarbitone used for seizures and prophylaxis. Surgical management includes drainage, irrigation, and fibrinolytic therapy (DRIFT), and neuro-endoscopic lavage. IVH causes various short-term and long-term neurodevelopmental consequences. Long-term complications include cerebral palsy and intellectual disability, which hamper the life of the child. It mainly presents with seizures, flaccidity, decerebrate posture, etc. Various preventive measures can be taken to tackle IVH in newborns. First of all, preterm delivery should be avoided, and intrauterine infections in mothers should be treated. The administration of corticosteroids should be done for all preterm deliveries as it helps in the maturation of organs. The administration of magnesium sulfate should be done as it is neuroprotective and reduces cerebral palsy in the future. Delayed cord clamping is to be done to reduce recurrent blood transfusions and decrease the risk of IVH. This article explains the pathogenesis, management, prevention, and future outcomes of IVH.
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Affiliation(s)
- Gauri S Pande
- Department of Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Jayant D Vagha
- Department of Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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Apeksha Reddy P, Sreenivasulu H, Shokrolahi M, Muppalla SK, Abdilov N, Ramar R, Halappa Nagaraj R, Vuppalapati S. Navigating the Complexities of Intraventricular Hemorrhage in Preterm Infants: An Updated Review. Cureus 2023; 15:e38985. [PMID: 37323305 PMCID: PMC10261871 DOI: 10.7759/cureus.38985] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2023] [Indexed: 06/17/2023] Open
Abstract
Intraventricular hemorrhage (IVH) is a type of bleeding that occurs in the ventricular cavity of the brain. In this comprehensive study, we provide a summary of the pathogenesis, diagnosis, and treatment of intraventricular hemorrhage in premature infants. Preterm babies are at high risk of developing IVH because their germinal matrix is not fully developed, making their blood vessels more prone to rupture. However, that is not necessarily the case in all preterm babies as the inherent structure of the germinal matrix makes it more susceptible to hemorrhage. Incidences of IVH are discussed based on recent data which states that around 12,000 premature infants in the United States experience IVH each year. Although grades I and II make up the majority of IVH cases and are frequently asymptomatic, IVH remains a significant issue for premature infants in neonatal intensive care facilities worldwide. Grades I and II have been linked to mutations in the type IV procollagen gene, COL4A1, as well as prothrombin G20210A and factor V Leiden mutations. Intraventricular hemorrhage can be detected using brain imaging in the first seven to 14 days following delivery. This review also shines a light on reliable methods for identifying IVH in premature newborns like cranial ultrasound and magnetic resonance imaging along with the treatment of IVH which is primarily supportive and involves the management of intracranial pressure, the correction of coagulation abnormalities, and the prevention of seizures.
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Affiliation(s)
| | | | | | | | - Nurlan Abdilov
- Internal Medicine, University of Debrecen, Debrecen, HUN
| | - Rajasekar Ramar
- Internal Medicine, Rajah Muthiah Medical College and Hospital, Chidambaram, IND
| | | | - Sravya Vuppalapati
- Pediatrics, P.E.S. Institute of Medical Sciences and Research, Kuppam, IND
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Systemic Cytokines in Retinopathy of Prematurity. J Pers Med 2023; 13:jpm13020291. [PMID: 36836525 PMCID: PMC9966226 DOI: 10.3390/jpm13020291] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 01/30/2023] [Accepted: 01/30/2023] [Indexed: 02/09/2023] Open
Abstract
Retinopathy of prematurity (ROP), a vasoproliferative vitreoretinal disorder, is the leading cause of childhood blindness worldwide. Although angiogenic pathways have been the main focus, cytokine-mediated inflammation is also involved in ROP etiology. Herein, we illustrate the characteristics and actions of all cytokines involved in ROP pathogenesis. The two-phase (vaso-obliteration followed by vasoproliferation) theory outlines the evaluation of cytokines in a time-dependent manner. Levels of cytokines may even differ between the blood and the vitreous. Data from animal models of oxygen-induced retinopathy are also valuable. Although conventional cryotherapy and laser photocoagulation are well established and anti-vascular endothelial growth factor agents are available, less destructive novel therapeutics that can precisely target the signaling pathways are required. Linking the cytokines involved in ROP to other maternal and neonatal diseases and conditions provides insights into the management of ROP. Suppressing disordered retinal angiogenesis via the modulation of hypoxia-inducible factor, supplementation of insulin-like growth factor (IGF)-1/IGF-binding protein 3 complex, erythropoietin, and its derivatives, polyunsaturated fatty acids, and inhibition of secretogranin III have attracted the attention of researchers. Recently, gut microbiota modulation, non-coding RNAs, and gene therapies have shown promise in regulating ROP. These emerging therapeutics can be used to treat preterm infants with ROP.
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11
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Song J, Nilsson G, Xu Y, Zelco A, Rocha-Ferreira E, Wang Y, Zhang X, Zhang S, Ek J, Hagberg H, Zhu C, Wang X. Temporal brain transcriptome analysis reveals key pathological events after germinal matrix hemorrhage in neonatal rats. J Cereb Blood Flow Metab 2022; 42:1632-1649. [PMID: 35491813 PMCID: PMC9441725 DOI: 10.1177/0271678x221098811] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Germinal matrix hemorrhage (GMH) is a common complication in preterm infants and is associated with high risk of adverse neurodevelopmental outcomes. We used a rat GMH model and performed RNA sequencing to investigate the signaling pathways and biological processes following hemorrhage. GMH induced brain injury characterized by early hematoma and subsequent tissue loss. At 6 hours after GMH, gene expression indicated an increase in mitochondrial activity such as ATP metabolism and oxidative phosphorylation along with upregulation of cytoprotective pathways and heme metabolism. At 24 hours after GMH, the expression pattern suggested an increase in cell cycle progression and downregulation of neurodevelopmental-related pathways. At 72 hours after GMH, there was an increase in genes related to inflammation and an upregulation of ferroptosis. Hemoglobin components and genes related to heme metabolism and ferroptosis such as Hmox1, Alox15, and Alas2 were among the most upregulated genes. We observed dysregulation of processes involved in development, mitochondrial function, cholesterol biosynthesis, and inflammation, all of which contribute to neurodevelopmental deterioration following GMH. This study is the first temporal transcriptome profile providing a comprehensive overview of the molecular mechanisms underlying brain injury following GMH, and it provides useful guidance in the search for therapeutic interventions.
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Affiliation(s)
- Juan Song
- Centre for Perinatal Medicine and Health, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Henan Key Laboratory of Child Brain Injury and Henan Pediatric Clinical Research Center, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China
| | - Gisela Nilsson
- Centre for Perinatal Medicine and Health, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Yiran Xu
- Henan Key Laboratory of Child Brain Injury and Henan Pediatric Clinical Research Center, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China
| | - Aura Zelco
- Centre for Perinatal Medicine and Health, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Eridan Rocha-Ferreira
- Centre for Perinatal Medicine and Health, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Yafeng Wang
- Henan Provincial Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China.,Center for Brain Repair and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - Xiaoli Zhang
- Henan Key Laboratory of Child Brain Injury and Henan Pediatric Clinical Research Center, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China
| | - Shan Zhang
- Henan Key Laboratory of Child Brain Injury and Henan Pediatric Clinical Research Center, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China.,Center for Brain Repair and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - Joakim Ek
- Centre for Perinatal Medicine and Health, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Henrik Hagberg
- Centre for Perinatal Medicine and Health, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Changlian Zhu
- Henan Key Laboratory of Child Brain Injury and Henan Pediatric Clinical Research Center, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China.,Center for Brain Repair and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - Xiaoyang Wang
- Centre for Perinatal Medicine and Health, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Henan Key Laboratory of Child Brain Injury and Henan Pediatric Clinical Research Center, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China.,Centre for Perinatal Medicine and Health, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden
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Alves-Martinez P, Atienza-Navarro I, Vargas-Soria M, Carranza-Naval MJ, Infante-Garcia C, Benavente-Fernandez I, Del Marco A, Lubian-Lopez S, Garcia-Alloza M. Caffeine Restores Neuronal Damage and Inflammatory Response in a Model of Intraventricular Hemorrhage of the Preterm Newborn. Front Cell Dev Biol 2022; 10:908045. [PMID: 36035990 PMCID: PMC9411947 DOI: 10.3389/fcell.2022.908045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
Germinal matrix-intraventricular hemorrhage (GM-IVH) is the most frequent intracranial hemorrhage in the preterm infant (PT). Long-term GM-IVH-associated sequelae include cerebral palsy, sensory and motor impairment, learning disabilities, or neuropsychiatric disorders. The societal and health burden associated with GM-IVH is worsened by the fact that there is no successful treatment to limit or reduce brain damage and neurodevelopment disabilities. Caffeine (Caf) is a methylxanthine that binds to adenosine receptors, regularly used to treat the apnea of prematurity. While previous studies support the beneficial effects at the brain level of Caf in PT, there are no studies that specifically focus on the role of Caf in GM-IVH. Therefore, to further understand the role of Caf in GM-IVH, we have analyzed two doses of Caf (10 and 20 mg/kg) in a murine model of the disease. We have analyzed the short (P14) and long (P70) effects of the treatment on brain atrophy and neuron wellbeing, including density, curvature, and phospho-tau/total tau ratio. We have analyzed proliferation and neurogenesis, as well as microglia and hemorrhage burdens. We have also assessed the long-term effects of Caf treatment at cognitive level. To induce GM-IVH, we have administered intraventricular collagenase to P7 CD1 mice and have analyzed these animals in the short (P14) and long (P70) term. Caf showed a general neuroprotective effect in our model of GM-IVH of the PT. In our study, Caf administration diminishes brain atrophy and ventricle enlargement. Likewise, Caf limits neuronal damage, including neurite curvature and tau phosphorylation. It also contributes to maintaining neurogenesis in the subventricular zone, a neurogenic niche that is severely affected after GM-IVH. Furthermore, Caf ameliorates small vessel bleeding and inflammation in both the cortex and the subventricular zone. Observed mitigation of brain pathological features commonly associated with GM-IVH also results in a significant improvement of learning and memory abilities in the long term. Altogether, our data support the promising effects of Caf to reduce central nervous system complications associated with GM-IVH.
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Affiliation(s)
- Pilar Alves-Martinez
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Isabel Atienza-Navarro
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Maria Vargas-Soria
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Maria Jose Carranza-Naval
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
- Salus-Infirmorum, University of Cadiz, Cadiz, Spain
| | - Carmen Infante-Garcia
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Isabel Benavente-Fernandez
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
- Area of Pediatrics, Department of Child and Mother Health and Radiology, Medical School, University of Cadiz, Cadiz, Spain
- Section of Neonatology, Division of Pediatrics, Hospital Universitario Puerta del Mar, Cadiz, Spain
| | - Angel Del Marco
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Simon Lubian-Lopez
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
- Section of Neonatology, Division of Pediatrics, Hospital Universitario Puerta del Mar, Cadiz, Spain
- *Correspondence: Simon Lubian-Lopez, ; Monica Garcia-Alloza,
| | - Monica Garcia-Alloza
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
- *Correspondence: Simon Lubian-Lopez, ; Monica Garcia-Alloza,
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Lu Y, Zhang ZQ. Neonatal hemorrhage stroke and severe coagulopathy in a late preterm infant after receiving umbilical cord milking: A case report. World J Clin Cases 2022; 10:5365-5372. [PMID: 35812658 PMCID: PMC9210894 DOI: 10.12998/wjcc.v10.i16.5365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/23/2021] [Accepted: 04/04/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Umbilical cord milking (UCM) is an alternative placental transfusion method for delayed umbilical cord clamping in routine obstetric practice, allowing prompt resuscitation of an infant. Thus, UCM has been adopted at some tertiary neonatal centers for preterm infants to enhance placental-to-fetal transfusion. It is not suggested for babies less than 28 wk of gestational age because it is associated with severe brain hemorrhage. For late preterm or term infants who do not require resuscitation, cord management is recommended to increase iron levels and prevent the development of iron deficiency anemia, which is associated with impaired motor development, behavioral problems, and cognitive delays. Concerns remain about whether UCM increases the incidence of intraventricular hemorrhage. However, there are very few reports of late preterm infants presenting with neonatal hemorrhage stroke (NHS) and severe coagulopathy after receiving UCM. Here, we report a case of a late preterm infant born at 34 wk of gestation. She abruptly deteriorated, exhibiting signs and symptoms of NHS and severe coagulopathy after receiving UCM on the first day of life.
CASE SUMMARY A female preterm infant born at 34 wk of gestation received UCM after birth. She was small for her gestational age and described as vigorous with Apgar scores of 9 and 10 at one minute and five minutes of life, respectively. After hospitalization in the neonatal intensive care unit, she showed hypoglycemia and metabolic acidosis. The baby was administered glucose and sodium bicarbonate infusions. Intramuscular vitamin K1 was also used to prevent vitamin K deficiency. The baby developed umbilical cord bleeding and gastric bleeding on day 1 of life; a physical examination showed bilateral conjunctival hemorrhage, and a blood test showed thrombocytopenia, prolonged prothrombin time, prolonged activated partial thromboplastin time, low fibrinogen, raised D-dimer levels and anemia. A subsequent cranial ultrasound and computed tomography scan showed a left parenchymal brain hemorrhage with extension into the ventricular and subarachnoid spaces. The patient was diagnosed with NHS in addition to disseminated intravascular coagulation (DIC). Fresh frozen plasma (FFP) and prothrombin complex concentrate were given for coagulopathy. Red blood cell and platelet transfusions were provided for thrombocytopenia and anemia. A bolus of midazolam, intravenous calcium and phenobarbital sodium were administered to control seizures. The baby’s clinical condition improved on day 5 of life, and the baby was hospitalized for 46 d and recovered well without seizure recurrence. Our case report suggests that preterm infants who receive UCM should undergo careful clinical assessment for intracranial hemorrhage, NHS and severe coagulopathy that may develop under certain circumstances. Supportive management, such as intensive care, FFP and blood transfusion, is recommended when the development of massive NHS and associated DIC is suspected.
CONCLUSION Our case report suggests that for late preterm infants who are small for gestational age and who receive UCM for alternative placental transfusion, neonatal health care professionals should be cautious in assessing the development of NHS and severe coagulopathy. Neonatal health care professionals should also be more cautious in assessing the complications of late preterm infants after they receive UCM.
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Affiliation(s)
- Yan Lu
- Department of Neonatology, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang Province, China
| | - Zhi-Qun Zhang
- Department of Neonatology, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang Province, China
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Nadeem T, Bommareddy A, Bolarinwa L, Cuervo H. Pericyte dynamics in the mouse germinal matrix angiogenesis. FASEB J 2022; 36:e22339. [PMID: 35506590 DOI: 10.1096/fj.202200120r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/18/2022] [Accepted: 04/22/2022] [Indexed: 12/14/2022]
Abstract
Germinal matrix-intraventricular hemorrhage (GM-IVH) is the most devastating neurological complication in premature infants. GM-IVH usually begins in the GM, a highly vascularized region of the developing brain where glial and neuronal precursors reside underneath the lateral ventricular ependyma. Previous studies using human fetal tissue have suggested increased angiogenesis and paucity of pericytes as key factors contributing to GM-IVH pathogenesis. Yet, despite its relevance, the mechanisms underlying the GM vasculature's susceptibility to hemorrhage remain poorly understood. To gain better understanding on the vascular dynamics of the GM, we performed a comprehensive analysis of the mouse GM vascular endothelium and pericytes during development. We hypothesize that vascular development of the mouse GM will provide a good model for studies of human GM vascularization and provide insights into the role of pericytes in GM-IVH pathogenesis. Our findings show that the mouse GM presents significantly greater vascular area and vascular branching compared to the developing cortex (CTX). Analysis of pericyte coverage showed abundance in PDGFRβ-positive and NG2-positive pericyte coverage in the GM similar to the developing CTX. However, we found a paucity in Desmin-positive pericyte coverage of the GM vasculature. Our results underscore the highly angiogenic nature of the GM and reveal that pericytes in the developing mouse GM exhibit distinct phenotypical and likely functional characteristics compared to other brain regions which might contribute to the high susceptibility of the GM vasculature to hemorrhage.
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Affiliation(s)
- Taliha Nadeem
- Department of Physiology and Biophysics, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Apoorva Bommareddy
- Department of Physiology and Biophysics, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Lolade Bolarinwa
- Department of Physiology and Biophysics, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Henar Cuervo
- Department of Physiology and Biophysics, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
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Holste KG, Xia F, Ye F, Keep RF, Xi G. Mechanisms of neuroinflammation in hydrocephalus after intraventricular hemorrhage: a review. Fluids Barriers CNS 2022; 19:28. [PMID: 35365172 PMCID: PMC8973639 DOI: 10.1186/s12987-022-00324-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 03/23/2022] [Indexed: 02/08/2023] Open
Abstract
Intraventricular hemorrhage (IVH) is a significant cause of morbidity and mortality in both neonatal and adult populations. IVH not only causes immediate damage to surrounding structures by way of mass effect and elevated intracranial pressure; the subsequent inflammation causes additional brain injury and edema. Of those neonates who experience severe IVH, 25-30% will go on to develop post-hemorrhagic hydrocephalus (PHH). PHH places neonates and adults at risk for white matter injury, seizures, and death. Unfortunately, the molecular determinants of PHH are not well understood. Within the past decade an emphasis has been placed on neuroinflammation in IVH and PHH. More information has come to light regarding inflammation-induced fibrosis and cerebrospinal fluid hypersecretion in response to IVH. The aim of this review is to discuss the role of neuroinflammation involving clot-derived neuroinflammatory factors including hemoglobin/iron, peroxiredoxin-2 and thrombin, as well as macrophages/microglia, cytokines and complement in the development of PHH. Understanding the mechanisms of neuroinflammation after IVH may highlight potential novel therapeutic targets for PHH.
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Affiliation(s)
- Katherine G Holste
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA.
| | - Fan Xia
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Fenghui Ye
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA.
- , 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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Recent Review of Germinal Matrix Hemorrhage-Intraventricular Hemorrhage in Preterm Infants. Neonatal Netw 2022; 41:100-106. [PMID: 35260427 DOI: 10.1891/11-t-722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2021] [Indexed: 11/25/2022]
Abstract
Germinal matrix hemorrhage-intraventricular hemorrhage (GMH-IVH) is a particular type of intracranial hemorrhage that affects the preterm population. GMH-IVH originates from bleeding within the highly vascular area near the center of the brain known as the germinal matrix. The pathogenesis of GMH-IVH is unclear; it is likely related to hemodynamic changes and fluctuations in cerebral blood flow within a fragile developing brain. Cranial ultrasound is the primary diagnostic test and reveals the degree of GMH-IVH based on a grading system. Management includes prevention of preterm delivery with meticulous antenatal and postnatal preventative strategies. This article discusses current evidence specific to the pathogenesis, risk factors, diagnosis, grading scales, and management approaches with GMH-IVH in preterm infants.
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Astasheva IB, Guseva MR, Atamuradov R, Marenkov VV, Kyun YA. [Modern possibilities of diagnosing lesions of the visual analyzer in perinatal lesions of the central nervous system in full-term and premature infants]. Zh Nevrol Psikhiatr Im S S Korsakova 2022; 122:7-15. [PMID: 36537625 DOI: 10.17116/jnevro20221221217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The article provides an overview of current neuro-ophthalmological diagnostic capabilities in patients with perinatal lesions. The main attention is paid to the diagnosis of patients with periventricular leukomalacia and peri- and intraventricular hemorrhages. The most relevant methods of neuro-ophthalmological diagnosis in hypoxic-ischemic CNS lesions are covered. The functions and peculiarities of blood supply of the germinal matrix are described. The importance of the use of optical coherence tomography and visual evoked potential recording in full-term and premature infants with visual pathway and/or visual cortex lesions in brain lesions is discussed. The conclusion emphasizes the need for an interdisciplinary approach in the examination of children with perinatal CNS lesions.
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Affiliation(s)
- I B Astasheva
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - M R Guseva
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - R Atamuradov
- Pirogov Russian National Research Medical University, Moscow, Russia
| | | | - Yu A Kyun
- Morozov Children's City Clinical Hospital, Moscow, Russia
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Nilsson G, Baburamani AA, Rutherford MA, Zhu C, Mallard C, Hagberg H, Vontell R, Wang X. White matter injury but not germinal matrix hemorrhage induces elevated osteopontin expression in human preterm brains. Acta Neuropathol Commun 2021; 9:166. [PMID: 34654477 PMCID: PMC8518254 DOI: 10.1186/s40478-021-01267-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/26/2021] [Indexed: 11/10/2022] Open
Abstract
Osteopontin (OPN) is a matricellular protein that mediates various physiological functions and is implicated in neuroinflammation, myelination, and perinatal brain injury. However, its expression in association with brain injury in preterm infants is unexplored. Here we examined the expression of OPN in postmortem brains of preterm infants and explored how this expression is affected in brain injury. We analyzed brain sections from cases with white matter injury (WMI) and cases with germinal matrix hemorrhage (GMH) and compared them to control cases having no brain injury. WMI cases displayed moderate to severe tissue injury in the periventricular and deep white matter that was accompanied by an increase of microglia with amoeboid morphology. Apart from visible hemorrhage in the germinal matrix, GMH cases displayed diffuse white matter injury in the periventricular and deep white matter. In non-injured preterm brains, OPN was expressed at low levels in microglia, astrocytes, and oligodendrocytes. OPN expression was significantly increased in regions with white matter injury in both WMI cases and GMH cases. The main cellular source of OPN in white matter injury areas was amoeboid microglia, although a significant increase was also observed in astrocytes in WMI cases. OPN was not expressed in the germinal matrix of any case, regardless of whether there was hemorrhage. In conclusion, preterm brain injury induces elevated OPN expression in microglia and astrocytes, and this increase is found in sites closely related to injury in the white matter regions but not with the hemorrhage site in the germinal matrix. Thus, it appears that OPN takes part in the inflammatory process in white matter injury in preterm infants, and these findings facilitate our understanding of OPN's role under both physiological and pathological conditions in the human brain that may lead to greater elucidation of disease mechanisms and potentially better treatment strategies.
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Affiliation(s)
- Gisela Nilsson
- Centre of Perinatal Medicine and Health, Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, 40530, Gothenburg, Sweden
| | - Ana A Baburamani
- Centre for the Developing Brain, Department of Perinatal Imaging and Health, School of Biomedical Engineering and Imaging Sciences, King's College London, King's Health Partners, St Thomas' Hospital, London, UK
| | - Mary A Rutherford
- Centre for the Developing Brain, Department of Perinatal Imaging and Health, School of Biomedical Engineering and Imaging Sciences, King's College London, King's Health Partners, St Thomas' Hospital, London, UK
| | - Changlian Zhu
- Department of Clinical Neuroscience, Center for Brain Repair and Rehabilitation, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
- Henan Key Laboratory of Child Brain Injury and Pediatric Clinical Research Center, Institute of Neuroscience and Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Carina Mallard
- Centre of Perinatal Medicine and Health, Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, 40530, Gothenburg, Sweden
| | - Henrik Hagberg
- Centre of Perinatal Medicine and Health, Institute of Clinical Sciences, Department of Obstetrics and Gynecology, Sahlgrenska Academy, Gothenburg University, 40530, Gothenburg, Sweden
| | - Regina Vontell
- Centre for the Developing Brain, Department of Perinatal Imaging and Health, School of Biomedical Engineering and Imaging Sciences, King's College London, King's Health Partners, St Thomas' Hospital, London, UK
- University of Miami Brain Endowment Bank, Miami, FL, 33136, USA
| | - Xiaoyang Wang
- Centre of Perinatal Medicine and Health, Institute of Clinical Sciences, Department of Obstetrics and Gynecology, Sahlgrenska Academy, Gothenburg University, 40530, Gothenburg, Sweden.
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Sun J, Chen D, Mao J. Research advances in neonatal cerebral sinovenous thrombosis. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2021; 23:860-866. [PMID: 34511178 DOI: 10.7499/j.issn.1008-8830.2105146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neonatal cerebral sinovenous thrombosis (CSVT) is a cerebrovascular disease with a seriously underestimated incidence rate. Due to a lack of specific clinical manifestations and the low sensitivity of conventional imaging examinations, it has long been considered a rare disease in neonates. In recent years, the development of magnetic resonance technology has improved the diagnostic rate of CSVT. This article reviews the research advances in intracranial venous anatomy of neonates and clinical manifestations, imaging features, treatment, and prognosis of CSVT and deep venous thrombosis, in order to improve the understanding and to make correct diagnosis and treatment of neonatal CSVT.
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Affiliation(s)
- Jing Sun
- Department of Neonatology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Dan Chen
- Department of Neonatology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Jian Mao
- Department of Neonatology, Shengjing Hospital, China Medical University, Shenyang 110004, China
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Function and Biomarkers of the Blood-Brain Barrier in a Neonatal Germinal Matrix Haemorrhage Model. Cells 2021; 10:cells10071677. [PMID: 34359845 PMCID: PMC8303246 DOI: 10.3390/cells10071677] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/23/2021] [Accepted: 06/29/2021] [Indexed: 01/10/2023] Open
Abstract
Germinal matrix haemorrhage (GMH), caused by rupturing blood vessels in the germinal matrix, is a prevalent driver of preterm brain injuries and death. Our group recently developed a model simulating GMH using intrastriatal injections of collagenase in 5-day-old rats, which corresponds to the brain development of human preterm infants. This study aimed to define changes to the blood-brain barrier (BBB) and to evaluate BBB proteins as biomarkers in this GMH model. Regional BBB functions were investigated using blood to brain 14C-sucrose uptake as well as using biotinylated BBB tracers. Blood plasma and cerebrospinal fluids were collected at various times after GMH and analysed with ELISA for OCLN and CLDN5. The immunoreactivity of BBB proteins was assessed in brain sections. Tracer experiments showed that GMH produced a defined region surrounding the hematoma where many vessels lost their integrity. This region expanded for at least 6 h following GMH, thereafter resolution of both hematoma and re-establishment of BBB function occurred. The sucrose experiment indicated that regions somewhat more distant to the hematoma also exhibited BBB dysfunction; however, BBB function was normalised within 5 days of GMH. This shows that GMH leads to a temporal dysfunction in the BBB that may be important in pathological processes as well as in connection to therapeutic interventions. We detected an increase of tight-junction proteins in both CSF and plasma after GMH making them potential biomarkers for GMH.
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Prasad JD, Gunn KC, Davidson JO, Galinsky R, Graham SE, Berry MJ, Bennet L, Gunn AJ, Dean JM. Anti-Inflammatory Therapies for Treatment of Inflammation-Related Preterm Brain Injury. Int J Mol Sci 2021; 22:4008. [PMID: 33924540 PMCID: PMC8069827 DOI: 10.3390/ijms22084008] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/09/2021] [Accepted: 04/10/2021] [Indexed: 12/13/2022] Open
Abstract
Despite the prevalence of preterm brain injury, there are no established neuroprotective strategies to prevent or alleviate mild-to-moderate inflammation-related brain injury. Perinatal infection and inflammation have been shown to trigger acute neuroinflammation, including proinflammatory cytokine release and gliosis, which are associated with acute and chronic disturbances in brain cell survival and maturation. These findings suggest the hypothesis that the inhibition of peripheral immune responses following infection or nonspecific inflammation may be a therapeutic strategy to reduce the associated brain injury and neurobehavioral deficits. This review provides an overview of the neonatal immunity, neuroinflammation, and mechanisms of inflammation-related brain injury in preterm infants and explores the safety and efficacy of anti-inflammatory agents as potentially neurotherapeutics.
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Affiliation(s)
- Jaya D. Prasad
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland 1010, New Zealand; (J.D.P.); (K.C.G.); (J.O.D.); (L.B.); (A.J.G.)
| | - Katherine C. Gunn
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland 1010, New Zealand; (J.D.P.); (K.C.G.); (J.O.D.); (L.B.); (A.J.G.)
| | - Joanne O. Davidson
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland 1010, New Zealand; (J.D.P.); (K.C.G.); (J.O.D.); (L.B.); (A.J.G.)
| | - Robert Galinsky
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia;
| | - Scott E. Graham
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1010, New Zealand;
| | - Mary J. Berry
- Department of Pediatrics and Health Care, University of Otago, Dunedin 9016, New Zealand;
| | - Laura Bennet
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland 1010, New Zealand; (J.D.P.); (K.C.G.); (J.O.D.); (L.B.); (A.J.G.)
| | - Alistair J. Gunn
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland 1010, New Zealand; (J.D.P.); (K.C.G.); (J.O.D.); (L.B.); (A.J.G.)
| | - Justin M. Dean
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland 1010, New Zealand; (J.D.P.); (K.C.G.); (J.O.D.); (L.B.); (A.J.G.)
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