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Auteur Michael K. GEORGIEFF
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Documents disponibles écrits par cet auteur (8)
Faire une suggestion Affiner la rechercheAtypical fetal development: Fetal alcohol syndrome, nutritional deprivation, teratogens, and risk for neurodevelopmental disorders and psychopathology / Michael K. GEORGIEFF in Development and Psychopathology, 30-3 (August 2018)
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[article]
Titre : Atypical fetal development: Fetal alcohol syndrome, nutritional deprivation, teratogens, and risk for neurodevelopmental disorders and psychopathology Type de document : texte imprimé Auteurs : Michael K. GEORGIEFF, Auteur ; Phu V. TRAN, Auteur ; Erik S. CARLSON, Auteur Article en page(s) : p.1063-1086 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Accumulating evidence indicates that the fetal environment plays an important role in brain development and sets the brain on a trajectory across the life span. An abnormal fetal environment results when factors that should be present during a critical period of development are absent or when factors that should not be in the developing brain are present. While these factors may acutely disrupt brain function, the real cost to society resides in the long-term effects, which include important mental health issues. We review the effects of three factors, fetal alcohol exposure, teratogen exposure, and nutrient deficiencies, on the developing brain and the consequent risk for developmental psychopathology. Each is reviewed with respect to the evidence found in epidemiological and clinical studies in humans as well as preclinical molecular and cellular studies that explicate mechanisms of action. En ligne : http://dx.doi.org/10.1017/s0954579418000500 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=367
in Development and Psychopathology > 30-3 (August 2018) . - p.1063-1086[article] Atypical fetal development: Fetal alcohol syndrome, nutritional deprivation, teratogens, and risk for neurodevelopmental disorders and psychopathology [texte imprimé] / Michael K. GEORGIEFF, Auteur ; Phu V. TRAN, Auteur ; Erik S. CARLSON, Auteur . - p.1063-1086.
Langues : Anglais (eng)
in Development and Psychopathology > 30-3 (August 2018) . - p.1063-1086
Index. décimale : PER Périodiques Résumé : Accumulating evidence indicates that the fetal environment plays an important role in brain development and sets the brain on a trajectory across the life span. An abnormal fetal environment results when factors that should be present during a critical period of development are absent or when factors that should not be in the developing brain are present. While these factors may acutely disrupt brain function, the real cost to society resides in the long-term effects, which include important mental health issues. We review the effects of three factors, fetal alcohol exposure, teratogen exposure, and nutrient deficiencies, on the developing brain and the consequent risk for developmental psychopathology. Each is reviewed with respect to the evidence found in epidemiological and clinical studies in humans as well as preclinical molecular and cellular studies that explicate mechanisms of action. En ligne : http://dx.doi.org/10.1017/s0954579418000500 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=367 Early life nutrition and neural plasticity / Michael K. GEORGIEFF in Development and Psychopathology, 27-2 (May 2015)
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Titre : Early life nutrition and neural plasticity Type de document : texte imprimé Auteurs : Michael K. GEORGIEFF, Auteur ; Katya E. BRUNETTE, Auteur ; Phu V. TRAN, Auteur Article en page(s) : p.411-423 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : The human brain undergoes a remarkable transformation during fetal life and the first postnatal years from a relatively undifferentiated but pluripotent organ to a highly specified and organized one. The outcome of this developmental maturation is highly dependent on a sequence of environmental exposures that can have either positive or negative influences on the ultimate plasticity of the adult brain. Many environmental exposures are beyond the control of the individual, but nutrition is not. An ever-increasing amount of research demonstrates not only that nutrition shapes the brain and affects its function during development but also that several nutrients early in life have profound and long-lasting effects on the brain. Nutrients have been shown to alter opening and closing of critical and sensitive periods of particular brain regions. This paper discusses the roles that various nutrients play in shaping the developing brain, concentrating specifically on recently explicated biological mechanisms by which particularly salient nutrients influence childhood and adult neural plasticity. En ligne : http://dx.doi.org/10.1017/S0954579415000061 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=257
in Development and Psychopathology > 27-2 (May 2015) . - p.411-423[article] Early life nutrition and neural plasticity [texte imprimé] / Michael K. GEORGIEFF, Auteur ; Katya E. BRUNETTE, Auteur ; Phu V. TRAN, Auteur . - p.411-423.
Langues : Anglais (eng)
in Development and Psychopathology > 27-2 (May 2015) . - p.411-423
Index. décimale : PER Périodiques Résumé : The human brain undergoes a remarkable transformation during fetal life and the first postnatal years from a relatively undifferentiated but pluripotent organ to a highly specified and organized one. The outcome of this developmental maturation is highly dependent on a sequence of environmental exposures that can have either positive or negative influences on the ultimate plasticity of the adult brain. Many environmental exposures are beyond the control of the individual, but nutrition is not. An ever-increasing amount of research demonstrates not only that nutrition shapes the brain and affects its function during development but also that several nutrients early in life have profound and long-lasting effects on the brain. Nutrients have been shown to alter opening and closing of critical and sensitive periods of particular brain regions. This paper discusses the roles that various nutrients play in shaping the developing brain, concentrating specifically on recently explicated biological mechanisms by which particularly salient nutrients influence childhood and adult neural plasticity. En ligne : http://dx.doi.org/10.1017/S0954579415000061 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=257 Four-year follow-up of a randomized controlled trial of choline for neurodevelopment in fetal alcohol spectrum disorder / Jeffrey R. WOZNIAK in Journal of Neurodevelopmental Disorders, 12 (2020)
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Titre : Four-year follow-up of a randomized controlled trial of choline for neurodevelopment in fetal alcohol spectrum disorder Type de document : texte imprimé Auteurs : Jeffrey R. WOZNIAK, Auteur ; Birgit A. FINK, Auteur ; Anita J. FUGLESTAD, Auteur ; Judith K. ECKERLE, Auteur ; Christopher J. BOYS, Auteur ; Kristin E. SANDNESS, Auteur ; Joshua P. RADKE, Auteur ; Neely C. MILLER, Auteur ; Christopher LINDGREN, Auteur ; Ann M. BREARLEY, Auteur ; Steven H. ZEISEL, Auteur ; Michael K. GEORGIEFF, Auteur Langues : Anglais (eng) Mots-clés : Child, Preschool Choline/therapeutic use Cognition/drug effects Double-Blind Method Female Fetal Alcohol Spectrum Disorders/drug therapy Follow-Up Studies Humans Intelligence/drug effects Male Memory, Short-Term/drug effects Nootropic Agents/therapeutic use Pregnancy Prenatal Exposure Delayed Effects/drug therapy Choline Cognition Fetal alcohol spectrum disorders Longitudinal studies Randomized controlled trials Index. décimale : PER Périodiques Résumé : BACKGROUND: Despite the high prevalence of fetal alcohol spectrum disorder (FASD), there are few interventions targeting its core neurocognitive and behavioral deficits. FASD is often conceptualized as static and permanent, but interventions that capitalize on brain plasticity and critical developmental windows are emerging. We present a long-term follow-up study evaluating the neurodevelopmental effects of choline supplementation in children with FASD 4 years after an initial efficacy trial. METHODS: The initial study was a randomized, double-blind, placebo-controlled trial of choline vs. placebo in 2-5-year-olds with FASD. Participants include 31 children (16 placebo; 15 choline) seen 4 years after trial completion. The mean age at follow-up was 8.6 years. Diagnoses were 12.9% fetal alcohol syndrome (FAS), 41.9% partial FAS, and 45.1% alcohol-related neurodevelopmental disorder. The follow-up included measures of intelligence, memory, executive functioning, and behavior. RESULTS: Children who received choline had higher non-verbal intelligence, higher visual-spatial skill, higher working memory ability, better verbal memory, and fewer behavioral symptoms of attention deficit hyperactivity disorder than the placebo group. No differences were seen for verbal intelligence, visual memory, or other executive functions. CONCLUSIONS: These data support choline as a potential neurodevelopmental intervention for FASD and highlight the need for long-term follow-up to capture treatment effects on neurodevelopmental trajectories. TRIAL REGISTRATION: ClinicalTrials.Gov #NCT01149538; Registered: June 23, 2010; first enrollment July 2, 2010. En ligne : https://dx.doi.org/10.1186/s11689-020-09312-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=573
in Journal of Neurodevelopmental Disorders > 12 (2020)[article] Four-year follow-up of a randomized controlled trial of choline for neurodevelopment in fetal alcohol spectrum disorder [texte imprimé] / Jeffrey R. WOZNIAK, Auteur ; Birgit A. FINK, Auteur ; Anita J. FUGLESTAD, Auteur ; Judith K. ECKERLE, Auteur ; Christopher J. BOYS, Auteur ; Kristin E. SANDNESS, Auteur ; Joshua P. RADKE, Auteur ; Neely C. MILLER, Auteur ; Christopher LINDGREN, Auteur ; Ann M. BREARLEY, Auteur ; Steven H. ZEISEL, Auteur ; Michael K. GEORGIEFF, Auteur.
Langues : Anglais (eng)
in Journal of Neurodevelopmental Disorders > 12 (2020)
Mots-clés : Child, Preschool Choline/therapeutic use Cognition/drug effects Double-Blind Method Female Fetal Alcohol Spectrum Disorders/drug therapy Follow-Up Studies Humans Intelligence/drug effects Male Memory, Short-Term/drug effects Nootropic Agents/therapeutic use Pregnancy Prenatal Exposure Delayed Effects/drug therapy Choline Cognition Fetal alcohol spectrum disorders Longitudinal studies Randomized controlled trials Index. décimale : PER Périodiques Résumé : BACKGROUND: Despite the high prevalence of fetal alcohol spectrum disorder (FASD), there are few interventions targeting its core neurocognitive and behavioral deficits. FASD is often conceptualized as static and permanent, but interventions that capitalize on brain plasticity and critical developmental windows are emerging. We present a long-term follow-up study evaluating the neurodevelopmental effects of choline supplementation in children with FASD 4 years after an initial efficacy trial. METHODS: The initial study was a randomized, double-blind, placebo-controlled trial of choline vs. placebo in 2-5-year-olds with FASD. Participants include 31 children (16 placebo; 15 choline) seen 4 years after trial completion. The mean age at follow-up was 8.6 years. Diagnoses were 12.9% fetal alcohol syndrome (FAS), 41.9% partial FAS, and 45.1% alcohol-related neurodevelopmental disorder. The follow-up included measures of intelligence, memory, executive functioning, and behavior. RESULTS: Children who received choline had higher non-verbal intelligence, higher visual-spatial skill, higher working memory ability, better verbal memory, and fewer behavioral symptoms of attention deficit hyperactivity disorder than the placebo group. No differences were seen for verbal intelligence, visual memory, or other executive functions. CONCLUSIONS: These data support choline as a potential neurodevelopmental intervention for FASD and highlight the need for long-term follow-up to capture treatment effects on neurodevelopmental trajectories. TRIAL REGISTRATION: ClinicalTrials.Gov #NCT01149538; Registered: June 23, 2010; first enrollment July 2, 2010. En ligne : https://dx.doi.org/10.1186/s11689-020-09312-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=573 Hippocampus specific iron deficiency alters competition and cooperation between developing memory systems / Erik S. CARLSON in Journal of Neurodevelopmental Disorders, 2-3 (September 2010)
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Titre : Hippocampus specific iron deficiency alters competition and cooperation between developing memory systems Type de document : texte imprimé Auteurs : Erik S. CARLSON, Auteur ; Stephanie J.B. FRETHAM, Auteur ; Erica UNGER, Auteur ; Michael O'CONNOR, Auteur ; Anna PETRYK, Auteur ; Timothy SCHALLERT, Auteur ; Raghavendra RAO, Auteur ; Ivan TKAC, Auteur ; Michael K. GEORGIEFF, Auteur Article en page(s) : p.133-43 Langues : Anglais (eng) Mots-clés : DMT1, Slc11a2, Nuclear magnetic resonance spectroscopy Hippocampus Iron deficiency Memory systems Morris water maze Procedural memory Spatial memory Striatum Index. décimale : PER Périodiques Résumé : UNLABELLED: Iron deficiency (ID) is the most common gestational micronutrient deficiency in the world, targets the fetal hippocampus and striatum and results in long-term behavioral abnormalities. These structures primarily mediate spatial and procedural memory, respectively, in the rodent but have interconnections that result in competition or cooperation during cognitive tasks. We determined whether ID-induced impairment of one alters the function of the other by genetically inducing a 40% reduction of hippocampus iron content in late fetal life in mice and measuring dorsal striatal gene expression and metabolism and the behavioral balance between the two memory systems in adulthood. Slc11a2(hipp/hipp) mice had similar striatum iron content, but 18% lower glucose and 44% lower lactate levels, a 30% higher phosphocreatine:creatine ratio, and reduced iron transporter gene expression compared to wild type (WT) littermates, implying reduced striatal metabolic function. Slc11a2(hipp/hipp) mice had longer mean escape times on a cued task paradigm implying impaired procedural memory. Nevertheless, when hippocampal and striatal memory systems were placed in competition using a Morris Water Maze task that alternates spatial navigation and visual cued responses during training, and forces a choice between hippocampal and striatal strategies during probe trials, Slc11a2(hipp/hipp) mice used the hippocampus-dependent response less often (25%) and the visual cued response more often (75%) compared to WT littermates that used both strategies approximately equally. Hippocampal ID not only reduces spatial recognition memory performance but also affects systems that support procedural memory, suggesting an altered balance between memory systems. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s11689-010-9049-0) contains supplementary material, which is available to authorized users. En ligne : http://dx.doi.org/10.1007/s11689-010-9049-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=342
in Journal of Neurodevelopmental Disorders > 2-3 (September 2010) . - p.133-43[article] Hippocampus specific iron deficiency alters competition and cooperation between developing memory systems [texte imprimé] / Erik S. CARLSON, Auteur ; Stephanie J.B. FRETHAM, Auteur ; Erica UNGER, Auteur ; Michael O'CONNOR, Auteur ; Anna PETRYK, Auteur ; Timothy SCHALLERT, Auteur ; Raghavendra RAO, Auteur ; Ivan TKAC, Auteur ; Michael K. GEORGIEFF, Auteur . - p.133-43.
Langues : Anglais (eng)
in Journal of Neurodevelopmental Disorders > 2-3 (September 2010) . - p.133-43
Mots-clés : DMT1, Slc11a2, Nuclear magnetic resonance spectroscopy Hippocampus Iron deficiency Memory systems Morris water maze Procedural memory Spatial memory Striatum Index. décimale : PER Périodiques Résumé : UNLABELLED: Iron deficiency (ID) is the most common gestational micronutrient deficiency in the world, targets the fetal hippocampus and striatum and results in long-term behavioral abnormalities. These structures primarily mediate spatial and procedural memory, respectively, in the rodent but have interconnections that result in competition or cooperation during cognitive tasks. We determined whether ID-induced impairment of one alters the function of the other by genetically inducing a 40% reduction of hippocampus iron content in late fetal life in mice and measuring dorsal striatal gene expression and metabolism and the behavioral balance between the two memory systems in adulthood. Slc11a2(hipp/hipp) mice had similar striatum iron content, but 18% lower glucose and 44% lower lactate levels, a 30% higher phosphocreatine:creatine ratio, and reduced iron transporter gene expression compared to wild type (WT) littermates, implying reduced striatal metabolic function. Slc11a2(hipp/hipp) mice had longer mean escape times on a cued task paradigm implying impaired procedural memory. Nevertheless, when hippocampal and striatal memory systems were placed in competition using a Morris Water Maze task that alternates spatial navigation and visual cued responses during training, and forces a choice between hippocampal and striatal strategies during probe trials, Slc11a2(hipp/hipp) mice used the hippocampus-dependent response less often (25%) and the visual cued response more often (75%) compared to WT littermates that used both strategies approximately equally. Hippocampal ID not only reduces spatial recognition memory performance but also affects systems that support procedural memory, suggesting an altered balance between memory systems. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s11689-010-9049-0) contains supplementary material, which is available to authorized users. En ligne : http://dx.doi.org/10.1007/s11689-010-9049-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=342 Long-term follow-up of a randomized controlled trial of choline for neurodevelopment in fetal alcohol spectrum disorder: corpus callosum white matter microstructure and neurocognitive outcomes / Blake A. GIMBEL in Journal of Neurodevelopmental Disorders, 14 (2022)
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Titre : Long-term follow-up of a randomized controlled trial of choline for neurodevelopment in fetal alcohol spectrum disorder: corpus callosum white matter microstructure and neurocognitive outcomes Type de document : texte imprimé Auteurs : Blake A. GIMBEL, Auteur ; Mary E. ANTHONY, Auteur ; Abigail M. ERNST, Auteur ; Donovan J. ROEDIGER, Auteur ; Erik DE WATER, Auteur ; Judith K. ECKERLE, Auteur ; Christopher J. BOYS, Auteur ; Joshua P. RADKE, Auteur ; Bryon A. MUELLER, Auteur ; Anita J. FUGLESTAD, Auteur ; Steven H. ZEISEL, Auteur ; Michael K. GEORGIEFF, Auteur ; Jeffrey R. WOZNIAK, Auteur Langues : Anglais (eng) Mots-clés : Child Pregnancy Female Humans Child, Preschool Fetal Alcohol Spectrum Disorders/drug therapy Choline/therapeutic use Corpus Callosum/diagnostic imaging Follow-Up Studies White Matter/diagnostic imaging Choline Cognition Diffusion MRI Fetal alcohol spectrum disorders Longitudinal studies Neurite orientation dispersion and density imaging Index. décimale : PER Périodiques Résumé : BACKGROUND: Fetal alcohol spectrum disorder (FASD) is a lifelong condition. Early interventions targeting core neurocognitive deficits have the potential to confer long-term neurodevelopmental benefits. Time-targeted choline supplementation is one such intervention that has been shown to provide neurodevelopmental benefits that emerge with age during childhood. We present a long-term follow-up study evaluating the neurodevelopmental effects of early choline supplementation in children with FASD approximately 7 years on average after an initial efficacy trial. METHODS: The initial study was a randomized, double-blind, placebo-controlled trial of choline vs. placebo in 2.5 to 5 year olds with FASD. Participants in this long-term follow-up study include 18 children (9 placebo; 9 choline) seen 7 years on average following initial trial completion. The mean age at follow-up was 11.0 years old. Diagnoses were 28% fetal alcohol syndrome (FAS), 28% partial FAS, and 44% alcohol-related neurodevelopmental disorder. The follow-up included measures of executive functioning and an MRI scan. RESULTS: Children who received choline had better performance on several tasks of lower-order executive function (e.g., processing speed) and showed higher white matter microstructure organization (i.e., greater axon coherence) in the splenium of the corpus callosum compared to the placebo group. CONCLUSIONS: These preliminary findings, although exploratory at this stage, highlight potential long-term benefits of choline as a neurodevelopmental intervention for FASD and suggest that choline may affect white matter development, representing a potential target of choline in this population. TRIAL REGISTRATION: Prior to enrollment, this trial was registered with clinicaltrials.gov ( NCT01149538 ) on June 23, 2010. En ligne : https://dx.doi.org/10.1186/s11689-022-09470-w Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575
in Journal of Neurodevelopmental Disorders > 14 (2022)[article] Long-term follow-up of a randomized controlled trial of choline for neurodevelopment in fetal alcohol spectrum disorder: corpus callosum white matter microstructure and neurocognitive outcomes [texte imprimé] / Blake A. GIMBEL, Auteur ; Mary E. ANTHONY, Auteur ; Abigail M. ERNST, Auteur ; Donovan J. ROEDIGER, Auteur ; Erik DE WATER, Auteur ; Judith K. ECKERLE, Auteur ; Christopher J. BOYS, Auteur ; Joshua P. RADKE, Auteur ; Bryon A. MUELLER, Auteur ; Anita J. FUGLESTAD, Auteur ; Steven H. ZEISEL, Auteur ; Michael K. GEORGIEFF, Auteur ; Jeffrey R. WOZNIAK, Auteur.
Langues : Anglais (eng)
in Journal of Neurodevelopmental Disorders > 14 (2022)
Mots-clés : Child Pregnancy Female Humans Child, Preschool Fetal Alcohol Spectrum Disorders/drug therapy Choline/therapeutic use Corpus Callosum/diagnostic imaging Follow-Up Studies White Matter/diagnostic imaging Choline Cognition Diffusion MRI Fetal alcohol spectrum disorders Longitudinal studies Neurite orientation dispersion and density imaging Index. décimale : PER Périodiques Résumé : BACKGROUND: Fetal alcohol spectrum disorder (FASD) is a lifelong condition. Early interventions targeting core neurocognitive deficits have the potential to confer long-term neurodevelopmental benefits. Time-targeted choline supplementation is one such intervention that has been shown to provide neurodevelopmental benefits that emerge with age during childhood. We present a long-term follow-up study evaluating the neurodevelopmental effects of early choline supplementation in children with FASD approximately 7 years on average after an initial efficacy trial. METHODS: The initial study was a randomized, double-blind, placebo-controlled trial of choline vs. placebo in 2.5 to 5 year olds with FASD. Participants in this long-term follow-up study include 18 children (9 placebo; 9 choline) seen 7 years on average following initial trial completion. The mean age at follow-up was 11.0 years old. Diagnoses were 28% fetal alcohol syndrome (FAS), 28% partial FAS, and 44% alcohol-related neurodevelopmental disorder. The follow-up included measures of executive functioning and an MRI scan. RESULTS: Children who received choline had better performance on several tasks of lower-order executive function (e.g., processing speed) and showed higher white matter microstructure organization (i.e., greater axon coherence) in the splenium of the corpus callosum compared to the placebo group. CONCLUSIONS: These preliminary findings, although exploratory at this stage, highlight potential long-term benefits of choline as a neurodevelopmental intervention for FASD and suggest that choline may affect white matter development, representing a potential target of choline in this population. TRIAL REGISTRATION: Prior to enrollment, this trial was registered with clinicaltrials.gov ( NCT01149538 ) on June 23, 2010. En ligne : https://dx.doi.org/10.1186/s11689-022-09470-w Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575 Research Review: Maternal prenatal distress and poor nutrition – mutually influencing risk factors affecting infant neurocognitive development / Catherine MONK in Journal of Child Psychology and Psychiatry, 54-2 (February 2013)
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PermalinkSocial brain circuitry and social cognition in infants born preterm / Angela FENOGLIO in Journal of Neurodevelopmental Disorders, 9-1 (December 2017)
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PermalinkSocial brain circuitry and social cognition in infants born preterm / Angela FENOGLIO in Journal of Neurodevelopmental Disorders, 9-1 (December 2017)
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