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For:	Martinez-Biarge M, Ferriero DM, Cowan FM. Perinatal arterial ischemic stroke. Handb Clin Neurol 2019;162:239-66. [PMID: 31324313 DOI: 10.1016/B978-0-444-64029-1.00011-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]

Number

Cited by Other Article(s)

Di Martino E, Rayasam A, Vexler ZS. Brain Maturation as a Fundamental Factor in Immune-Neurovascular Interactions in Stroke. Transl Stroke Res 2024;15:69-86. [PMID: 36705821 PMCID: PMC10796425 DOI: 10.1007/s12975-022-01111-7] [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: 07/13/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 01/28/2023]

Bogavac I, Jeličić L, Marisavljević M, Bošković Matić T, Subotić M. Arterial Presumed Perinatal Ischemic Stroke: A Mini Review and Case Report of Cognitive and Speech-Language Profiles in a 5-Year-Old Girl. CHILDREN (BASEL, SWITZERLAND) 2023;11:33. [PMID: 38255347 PMCID: PMC10814911 DOI: 10.3390/children11010033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/16/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024]

Khizroeva J, Makatsariya A, Vorobev A, Bitsadze V, Elalamy I, Lazarchuk A, Salnikova P, Einullaeva S, Solopova A, Tretykova M, Antonova A, Mashkova T, Grigoreva K, Kvaratskheliia M, Yakubova F, Degtyareva N, Tsibizova V, Gashimova N, Blbulyan D. The Hemostatic System in Newborns and the Risk of Neonatal Thrombosis. Int J Mol Sci 2023;24:13864. [PMID: 37762167 PMCID: PMC10530883 DOI: 10.3390/ijms241813864] [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: 07/28/2023] [Revised: 09/04/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open

Affiliation(s)

Jamilya Khizroeva Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Alexander Makatsariya Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Alexander Vorobev Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Victoria Bitsadze Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Ismail Elalamy Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.) Hematology and Thrombosis Center, Tenon Hospital, Sorbonne University, 4 Rue de la Chine, 75020 Paris, France
Arina Lazarchuk Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Polina Salnikova Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Sabina Einullaeva Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Antonina Solopova Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Maria Tretykova Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Alexandra Antonova Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Tamara Mashkova Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Kristina Grigoreva Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Margaret Kvaratskheliia Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Fidan Yakubova Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Natalia Degtyareva Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
Valentina Tsibizova Almazov National Medical Research Centre, Health Ministry of Russian Federation, 2 Akkuratova Str., 197341 Saint Petersburg, Russia;
Nilufar Gashimova Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)
David Blbulyan Department of Obstetrics, Gynecology and Perinatal Medicine, N.F. Filatov Clinical Institute of Children’s Health, I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str. 8-2, 119991 Moscow, Russia; (A.M.); (A.V.); (V.B.); (I.E.); (A.L.); (P.S.); (S.E.); (A.S.); (M.T.); (A.A.); (T.M.); (K.G.); (M.K.); (F.Y.); (N.D.); (N.G.); (D.B.)

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Jia JM, Jin Y. Modeling Distal Middle Cerebral Artery Occlusion in Neonatal Rodents with Magnetic Nanoparticles or Magnetized Red Blood Cells. Methods Mol Biol 2023;2616:55-65. [PMID: 36715928 DOI: 10.1007/978-1-0716-2926-0_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]

Malone LA, Levy TJ, Peterson RK, Felling RJ, Beslow LA. Neurological and Functional Outcomes after Pediatric Stroke. Semin Pediatr Neurol 2022;44:100991. [PMID: 36456032 DOI: 10.1016/j.spen.2022.100991] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 08/15/2022] [Accepted: 08/22/2022] [Indexed: 12/01/2022]

He Y, Ying J, Tang J, Zhou R, Qu H, Qu Y, Mu D. Neonatal Arterial Ischaemic Stroke: Advances in Pathologic Neural Death, Diagnosis, Treatment, and Prognosis. Curr Neuropharmacol 2022;20:2248-2266. [PMID: 35193484 PMCID: PMC9890291 DOI: 10.2174/1570159x20666220222144744] [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: 11/29/2021] [Revised: 02/04/2022] [Accepted: 02/18/2022] [Indexed: 12/29/2022] Open

Stence NV, Mirsky DM, Neuberger I. Perinatal Ischemic Stroke: Etiology and Imaging. Clin Perinatol 2022;49:675-692. [PMID: 36113929 DOI: 10.1016/j.clp.2022.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]

Jin Y, Shi P, Wang Y, Li J, Zhang J, Zhao X, Ge Y, Huang Y, Guo M, Wang F, Ci B, Xiao X, Gao X, Xu J, Dang B, Ji B, Ge WP, Jia JM. Precise control of embolic stroke with magnetized red blood cells in mice. Commun Biol 2022;5:136. [PMID: 35173272 PMCID: PMC8850623 DOI: 10.1038/s42003-022-03082-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 01/28/2022] [Indexed: 11/09/2022] Open

Affiliation(s)

Yuxiao Jin College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China.,Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China.,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, 310024, China.,Laboratory of Neurovascular Biology, Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, China
Peijun Shi Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, Hangzhou, China.,School of Engineering, Westlake University and Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou, China
Yu Wang Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
Jinghang Li School of Engineering, Westlake University and Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou, China.,School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan, Hubei, China
Jiachen Zhang School of Basic Medical Sciences, Wuhan University, Wuhan, China
Xinxin Zhao Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
Yaping Ge Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China.,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, 310024, China.,Laboratory of Neurovascular Biology, Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, China
Yanjie Huang Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China
Mengzhun Guo Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China.,Institute of Biology, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China
Feidi Wang Department of Anesthesiology & Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
Bo Ci Children's Medical Center Research Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA
Xian Xiao Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China.,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, 310024, China
Xiaofei Gao Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China.,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, 310024, China
Jianrong Xu Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
Bobo Dang Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China.,Institute of Biology, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China
Botao Ji Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, Hangzhou, China.,School of Engineering, Westlake University and Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou, China
Woo-Ping Ge Chinese Institute for Brain Research, Beijing, China
Jie-Min Jia Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China. .,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, 310024, China. .,Laboratory of Neurovascular Biology, Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, China.

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Jankovic M, Petrovic B, Novakovic I, Brankovic S, Radosavljevic N, Nikolic D. The Genetic Basis of Strokes in Pediatric Populations and Insight into New Therapeutic Options. Int J Mol Sci 2022;23:ijms23031601. [PMID: 35163523 PMCID: PMC8835808 DOI: 10.3390/ijms23031601] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 02/04/2023] Open

Abstract

Strokes within pediatric populations are considered to be the 10th leading cause of death in the United States of America, with over half of such events occurring in children younger than one year of life. The multifactorial etiopathology that has an influence on stroke development and occurrence signify the importance of the timely recognition of both modifiable and non-modifiable factors for adequate diagnostic and treatment approaches. The early recognition of a stroke and stroke risk in children has the potential to advance the application of neuroprotective, thrombolytic, and antithrombotic interventions and rehabilitation strategies to the earliest possible timepoints after the onset of a stroke, improving the outcomes and quality of life for affected children and their families. The recent development of molecular genetic methods has greatly facilitated the analysis and diagnosis of single-gene disorders. In this review, the most significant single gene disorders associated with pediatric stroke are presented, along with specific therapeutic options whenever they exist. Besides monogenic disorders that may present with stroke as a first symptom, genetic polymorphisms may contribute to the risk of pediatric and perinatal stroke. The most frequently studied genetic risk factors are several common polymorphisms in genes associated with thrombophilia; these genes code for proteins that are part of the coagulation cascade, fibrolysis, homocystein metabolism, lipid metabolism, or platelets. Single polymorphism frequencies may not be sufficient to completely explain the stroke causality and an analysis of several genotype combinations is a more promising approach. The recent steps forward in our understanding of the disorders underlying strokes has given us a next generation of therapeutics and therapeutic targets by which to improve stroke survival, protect or rebuild neuronal connections in the brain, and enhance neural function. Advances in DNA sequencing and the development of new tools to correct human gene mutations have brought genetic analysis and gene therapy into the focus of investigations for new therapeutic options for stroke patients.

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Mastrangelo M, Giordo L, Ricciardi G, De Michele M, Toni D, Leuzzi V. Acute ischemic stroke in childhood: a comprehensive review. Eur J Pediatr 2022;181:45-58. [PMID: 34327611 PMCID: PMC8760225 DOI: 10.1007/s00431-021-04212-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/10/2021] [Accepted: 07/15/2021] [Indexed: 12/27/2022]

Lecuyer M, Pathipati P, Faustino J, Vexler ZS. Neonatal stroke enhances interaction of microglia-derived extracellular vesicles with microglial cells. Neurobiol Dis 2021;157:105431. [PMID: 34153465 PMCID: PMC9068249 DOI: 10.1016/j.nbd.2021.105431] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 05/21/2021] [Accepted: 06/16/2021] [Indexed: 12/15/2022] Open

Abstract

Microglial cells support brain homeostasis under physiological conditions and modulate brain injury in a context-dependent and brain maturation-dependent manner. Microglial cells protect neonatal brain from acute stroke. While microglial signaling via direct cell-cell interaction and release of variety of molecules is intensely studied, less is known about microglial signaling via release and uptake of extracellular vesicles (EVs). We asked whether neonatal stroke alters release of microglial EVs (MEV) and MEV communication with activated microglia. We pulled down and plated microglia from ischemic-reperfused and contralateral cortex 24 h after transient middle cerebral artery occlusion (tMCAO) in postnatal day 9 mice, isolated and characterized microglia-derived microvesicles (P3-MEV) and exosomes (P4-MEV), and determined uptake of fluorescently labeled P3-MEV and P4-MEV by plated microglia derived from ischemic-reperfused and contralateral cortex. We then examined how reducing EVs release in neonatal brain-by intra-cortical injection of CRISPR-Cas9-Smpd3/KO (Smpd3/KD) to downregulate Smpd3 gene to disrupt neutral sphingomyelinase-2 (N-SMase2)-impacts P3-MEV and P4-MEV release and stroke injury. Both size and protein composition differed between P3-MEV and P4-MEV. tMCAO further altered protein composition of P3-MEV and P4-MEV and significantly, up to 5-fold, increased uptake of both vesicle subtypes by microglia from ischemic-reperfused regions. Under physiological conditions neurons were the predominant cell type expressing N-SMase-2, an enzyme involved in lipid signaling and EVs release. After tMCAO N-SMase-2 expression was diminished in injured neurons but increased in activated microglia/macrophages, leading to overall reduced N-SMase-2 activity. Compared to intracerebral injection of control plasmid, CRISPR-Cas9-Smpd3/Ct, Smpd3/KD injection further reduced N-SMase-2 activity and significantly reduced injury. Smpd3 downregulation decreased MEV release from injured regions, reduced Smpd3/KD-P3-MEV uptake and abolished Smpd3/KD-P4-MEV uptake by microglia from ischemic-reperfused region. Cumulatively, these data demonstrate that microglial cells release both microvesicles and exosomes in naïve neonatal brain, that the state of microglial activation determines both properties of released EVs and their recognition/uptake by microglia in ischemic-reperfused and control regions, suggesting a modulatory role of MEV in neonatal stroke, and that sphingosine/N-SMase-2 signaling contributes both to EVs release and uptake (predominantly P4-MEV) after neonatal stroke.

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van Ommen CH, Albisetti M, Bhatt M, Bonduel M, Branchford B, Chalmers E, Chan A, Goldenberg NA, Holzhauer S, Monagle P, Nowak‐Göttl U, Revel‐Vilk S, Sciuccatie G, Sirachainan N, Male C. International pediatric thrombosis network to advance pediatric thrombosis research: Communication from the ISTH SSC subcommittee on pediatric and neonatal thrombosis and hemostasis. J Thromb Haemost 2021;19:1123-1129. [PMID: 33792176 PMCID: PMC8252713 DOI: 10.1111/jth.15260] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 01/28/2021] [Accepted: 02/01/2021] [Indexed: 01/16/2023]

Affiliation(s)

C. Heleen van Ommen Department of Pediatric Hematology‐OncologyErasmus MC Sophia Children's HospitalRotterdamthe Netherlands
Manuela Albisetti Division of HematologyUniversity Children's HospitalZurichSwitzerland
Mohir Bhatt Department of PediatricsMcMaster UniversityHamiltonOntarioCanada
Marianne Bonduel Servicio de Hematología y OncologíaHospital de Pediatría Prof. Dr. Juan P. GarrahanBuenos AiresArgentina
Brian Branchford Department of PediatricsUniversity of Colorado Anschutz Medical CampusDenverColoradoUSA
Elizabeth Chalmers Department of HematologyRoyal Hospital for ChildrenGlasgowUK
Anthony Chan Department of PediatricsMcMaster UniversityHamiltonOntarioCanada
Neil A. Goldenberg Departments of Pediatrics and MedicineDivision of HematologyJohns Hopkins University School of MedicineBaltimoreMarylandUSA Thrombosis and Stroke ProgramsJohns Hopkins All Children's Hospital, and Johns Hopkins All Children's Institute for Clinical and Translational ResearchSt. PetersburgFloridaUSA
Susanne Holzhauer Department of Pediatric Hematology‐OncologyCharitéBerlinGermany
Paul Monagle Department of PediatricsHematology Research GroupMurdoch Children's Research InstituteThe University of MelbourneMelbourneAustralia Department of Clinical HematologyThe Royal Children's HospitalMelbourneAustralia
Ulrike Nowak‐Göttl Department of Pediatric Hematology‐OncologyMünster and Institute of Clinical ChemistryUniversity Hospital Kiel‐LübeckUniversity of MünsterKielGermany
Shoshana Revel‐Vilk Pediatric Hematology/Oncology UnitShaare‐Zedek Medical CenterHebrew UniversityJerusalemIsrael
Gabriela Sciuccatie Servicio de Hematología y OncologíaHospital de Pediatría Prof. Dr. Juan P. GarrahanBuenos AiresArgentina
Nongnuch Sirachainan Department of PediatricsFaculty of Medicine Ramathibodi HospitalMahidol UniversityBangkokThailand
Christoph Male Department of PediatricsMedical University of ViennaViennaAustria
for the Subcommittee on Pediatric, Neonatal Thrombosis, Hemostasis

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Mike JK, Pathipati P, Sheldon RA, Ferriero DM. Changes in arginase isoforms in a murine model of neonatal brain hypoxia-ischemia. Pediatr Res 2021;89:830-837. [PMID: 32464635 PMCID: PMC7704631 DOI: 10.1038/s41390-020-0978-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 04/27/2020] [Accepted: 05/12/2020] [Indexed: 12/12/2022]

Abstract

BACKGROUND

Arginases (ARG isoforms, ARG-1/ARG-2) are key regulatory enzymes of inflammation and tissue repair; however, their role after neonatal brain hypoxia (H) and hypoxia-ischemia (HI) remains unknown.

METHODS

C57BL/6 mice subjected to the Vannucci procedure on postnatal day (P9) were sacrificed at different timepoints. The degree of brain damage was assessed histologically. ARG spatiotemporal localization was determined via immunohistochemistry. ARG expression was measured by Western blot and activity spectrophotometrically.

RESULTS

ARG isoform expression increased during neurodevelopment (P9-P17) in the cortex and hippocampus. This was suppressed with H and HI only in the hippocampus. In the cortex, both isoforms increased with H alone and only ARG-2 increased with HI at 3 days. ARG activity during neurodevelopment remained unchanged, but increased at 1 day with H and not HI. ARG-1 localized with microglia at the injury site as early as 4 h after injury, while ARG-2 localized with neurons.

CONCLUSIONS

ARG isoform expression increases with age from P9 to P17, but is suppressed by injury specifically in the hippocampus and not in the cortex. Both levels and activity of ARG isoforms increase with H, while ARG-1 immunolabelling is upregulated in the HI cortex. Evidently, ARG isoforms in the brain differ in spatiotemporal localization, expression, and activity during neurodevelopment and after injury.

IMPACT

Arginase isoforms change during neurodevelopment and after neonatal brain HI. This is the first study investigating the key enzymes of inflammation and tissue repair called arginases following murine neonatal brain HI. The highly region- and cell-specific expression suggests the possibility of specific functions of arginases. ARG-1 in microglia at the injury site may regulate neuroinflammation, while ARG-2 in neurons of developmental structures may impact neurodevelopment. While further studies are needed to describe the exact role of ARGs after neonatal brain HI, our study adds valuable data on anatomical localization and expression of ARGs in brain during development and after stroke.

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Abstract

Hypoxic-ischemic encephalopathy (HIE) is one of the most frequent causes of brain injury in the newborn. From a pathophysiological standpoint, a complex process takes place at the cellular and tissue level during the development of newborn brain damage in the absence of oxygen. Initially, the lesion is triggered by a deficit in the supply of oxygen to cells and tissues, causing a primary energy insufficiency. Subsequently, high energy phosphate levels recover transiently (the latent phase) that is followed by a secondary phase, in which many of the pathophysiological mechanisms involved in the development of neonatal brain damage ensue (i.e., excitotoxicity, massive influx of Ca2+, oxidative and nitrosative stress, inflammation). This leads to cell death by necrosis or apoptosis. Eventually, a tertiary phase occurs, characterized by the persistence of brain damage for months and even years after the HI insult. Hypothermia is the only therapeutic strategy against HIE that has been incorporated into neonatal intensive care units with limited success. Thus, there is an urgent need for agents with the capacity to curtail acute and chronic damage in HIE. Melatonin, a molecule of unusual phylogenetic conservation present in all known aerobic organisms, has a potential role as a neuroprotective agent both acutely and chronically in HIE. Melatonin displays a remarkable antioxidant and anti-inflammatory activity and is capable to cross the blood-brain barrier readily. Moreover, in many animal models of brain degeneration, melatonin was effective to impair chronic mechanisms of neuronal death. In animal models, and in a limited number of clinical studies, melatonin increased the level of protection developed by hypothermia in newborn asphyxia. This review article summarizes briefly the available therapeutic strategies in HIE and assesses the role of melatonin as a potentially relevant therapeutic tool to cover the hypoxia-ischemia phase and the secondary and tertiary phases following a hypoxic-ischemic insult.

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