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Serum levels of soluble platelet endothelial cell adhesion molecule-1 and vascular cell adhesion molecule-1 are decreased in subjects with autism spectrum disorder / Yosuke KAMENO in Molecular Autism, (June 2013)
[article]
Titre : Serum levels of soluble platelet endothelial cell adhesion molecule-1 and vascular cell adhesion molecule-1 are decreased in subjects with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Yosuke KAMENO, Auteur ; Keiko IWATA, Auteur ; Hideo MATSUZAKI, Auteur ; Taishi MIYACHI, Auteur ; Kenji J. TSUCHIYA, Auteur ; Kaori MATSUMOTO, Auteur ; Yasuhide IWATA, Auteur ; Katsuaki SUZUKI, Auteur ; Kazuhiko NAKAMURA, Auteur ; Masato MAEKAWA, Auteur ; Masatsugu TSUJII, Auteur ; Toshirou SUGIYAMA, Auteur ; Norio MORI, Auteur Année de publication : 2013 Article en page(s) : 6 p. Langues : Anglais (eng) Mots-clés : Autism Human serum Adhesion molecules Platelet-endothelial adhesion molecule-1 Platelet selectin Endothelial selectin Intracellular adhesion molecule-1 Vascular cell adhesion molecule-1 Index. décimale : PER Périodiques Résumé : Background
Adhesion molecules, such as platelet-endothelial adhesion molecule-1 (PECAM-1), platelet selectin (P-selectin), endothelial selectin (E-selectin), intracellular adhesion molecule-1 (ICAM-1), and vascular cell adhesion molecule-1 (VCAM-1), are localized on the membranes of activated platelets and leukocytes and on the vascular endothelium. Recently, we measured serum levels of soluble (s) forms of adhesion molecules in adults,18 to 26 years old, with autism spectrum disorder (ASD) and observed low levels of sPECAM-1 and sP-selectin. A subsequent study showed a similar result in children two to four years old with ASD. However, information about school age (five to seventeen years old) ASD subjects is required to determine whether adhesion molecules are also reduced in individuals with ASD in this age range.
Findings
Twenty-two subjects with high-functioning ASD and 29 healthy age-matched controls were recruited. ELISA was used for sPECAM-1, and a suspension array system was used for sP-selectin, sE-selectin, sICAM-1 and sVCAM-1 measurements. We found that serum levels of sPECAM-1 (U = 91.0, P<0.0001 by Mann–Whitney U test) and sVCAM-1 (U = 168.0, P = 0.0042) were significantly lower in ASD subjects than in controls. Subsequently, we examined the correlations between serum levels of either sPECAM-1 or sVCAM-1 and clinical variables including Autism Diagnostic Interview - Revised subscores and our previous cytokine profile data from the same ASD subjects. However, we did not find any significant correlations between them.
Conclusions
The present results, taken together with previous results, suggest that sPECAM-1 may play a role in the generation and development of ASD, beginning in childhood and lasting until adulthood.En ligne : http://dx.doi.org/10.1186/2040-2392-4-19 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=211
in Molecular Autism > (June 2013) . - 6 p.[article] Serum levels of soluble platelet endothelial cell adhesion molecule-1 and vascular cell adhesion molecule-1 are decreased in subjects with autism spectrum disorder [Texte imprimé et/ou numérique] / Yosuke KAMENO, Auteur ; Keiko IWATA, Auteur ; Hideo MATSUZAKI, Auteur ; Taishi MIYACHI, Auteur ; Kenji J. TSUCHIYA, Auteur ; Kaori MATSUMOTO, Auteur ; Yasuhide IWATA, Auteur ; Katsuaki SUZUKI, Auteur ; Kazuhiko NAKAMURA, Auteur ; Masato MAEKAWA, Auteur ; Masatsugu TSUJII, Auteur ; Toshirou SUGIYAMA, Auteur ; Norio MORI, Auteur . - 2013 . - 6 p.
Langues : Anglais (eng)
in Molecular Autism > (June 2013) . - 6 p.
Mots-clés : Autism Human serum Adhesion molecules Platelet-endothelial adhesion molecule-1 Platelet selectin Endothelial selectin Intracellular adhesion molecule-1 Vascular cell adhesion molecule-1 Index. décimale : PER Périodiques Résumé : Background
Adhesion molecules, such as platelet-endothelial adhesion molecule-1 (PECAM-1), platelet selectin (P-selectin), endothelial selectin (E-selectin), intracellular adhesion molecule-1 (ICAM-1), and vascular cell adhesion molecule-1 (VCAM-1), are localized on the membranes of activated platelets and leukocytes and on the vascular endothelium. Recently, we measured serum levels of soluble (s) forms of adhesion molecules in adults,18 to 26 years old, with autism spectrum disorder (ASD) and observed low levels of sPECAM-1 and sP-selectin. A subsequent study showed a similar result in children two to four years old with ASD. However, information about school age (five to seventeen years old) ASD subjects is required to determine whether adhesion molecules are also reduced in individuals with ASD in this age range.
Findings
Twenty-two subjects with high-functioning ASD and 29 healthy age-matched controls were recruited. ELISA was used for sPECAM-1, and a suspension array system was used for sP-selectin, sE-selectin, sICAM-1 and sVCAM-1 measurements. We found that serum levels of sPECAM-1 (U = 91.0, P<0.0001 by Mann–Whitney U test) and sVCAM-1 (U = 168.0, P = 0.0042) were significantly lower in ASD subjects than in controls. Subsequently, we examined the correlations between serum levels of either sPECAM-1 or sVCAM-1 and clinical variables including Autism Diagnostic Interview - Revised subscores and our previous cytokine profile data from the same ASD subjects. However, we did not find any significant correlations between them.
Conclusions
The present results, taken together with previous results, suggest that sPECAM-1 may play a role in the generation and development of ASD, beginning in childhood and lasting until adulthood.En ligne : http://dx.doi.org/10.1186/2040-2392-4-19 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=211 Hippocampal neurons isolated from rats subjected to the valproic acid model mimic in vivo synaptic pattern: evidence of neuronal priming during early development in autism spectrum disorders / M. E. TRAETTA in Molecular Autism, 12 (2021)
[article]
Titre : Hippocampal neurons isolated from rats subjected to the valproic acid model mimic in vivo synaptic pattern: evidence of neuronal priming during early development in autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : M. E. TRAETTA, Auteur ; M. G. CODAGNONE, Auteur ; N. A. UCCELLI, Auteur ; A. J. RAMOS, Auteur ; S. ZÁRATE, Auteur ; A. REINÉS, Auteur Article en page(s) : 23 p. Langues : Anglais (eng) Mots-clés : Animals Anticonvulsants Autism Spectrum Disorder/chemically induced/metabolism Behavior, Animal/drug effects Cells, Cultured Disease Models, Animal Female Hippocampus/drug effects/metabolism/ultrastructure Male Microglia/drug effects Neural Cell Adhesion Molecules/metabolism Neuronal Plasticity/drug effects Neurons/drug effects/metabolism/ultrastructure Phosphoprotein Phosphatases/metabolism Pregnancy Rats, Wistar Synapses/drug effects Valproic Acid Adhesion molecules Autism spectrum disorders Hippocampus Ncam Synapse VPA model Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorders (ASD) are synaptopathies characterized by area-specific synaptic alterations and neuroinflammation. Structural and adhesive features of hippocampal synapses have been described in the valproic acid (VPA) model. However, neuronal and microglial contribution to hippocampal synaptic pattern and its time-course of appearance is still unknown. METHODS: Male pups born from pregnant rats injected at embryonic day 10.5 with VPA (450 mg/kg, i.p.) or saline (control) were used. Maturation, exploratory activity and social interaction were assessed as autistic-like traits. Synaptic, cell adhesion and microglial markers were evaluated in the CA3 hippocampal region at postnatal day (PND) 3 and 35. Primary cultures of hippocampal neurons from control and VPA animals were used to study synaptic features and glutamate-induced structural remodeling. Basal and stimuli-mediated reactivity was assessed on microglia primary cultures isolated from control and VPA animals. RESULTS: At PND3, before VPA behavioral deficits were evident, synaptophysin immunoreactivity and the balance between the neuronal cell adhesion molecule (NCAM) and its polysialylated form (PSA-NCAM) were preserved in the hippocampus of VPA animals along with the absence of microgliosis. At PND35, concomitantly with the establishment of behavioral deficits, the hippocampus of VPA rats showed fewer excitatory synapses and increased NCAM/PSA-NCAM balance without microgliosis. Hippocampal neurons from VPA animals in culture exhibited a preserved synaptic puncta number at the beginning of the synaptogenic period in vitro but showed fewer excitatory synapses as well as increased NCAM/PSA-NCAM balance and resistance to glutamate-induced structural synaptic remodeling after active synaptogenesis. Microglial cells isolated from VPA animals and cultured in the absence of neurons showed similar basal and stimuli-induced reactivity to the control group. Results indicate that in the absence of glia, hippocampal neurons from VPA animals mirrored the in vivo synaptic pattern and suggest that while neurons are primed during the prenatal period, hippocampal microglia are not intrinsically altered. CONCLUSIONS: Our study suggests microglial role is not determinant for developing neuronal alterations or counteracting neuronal outcome in the hippocampus and highlights the crucial role of hippocampal neurons and structural plasticity in the establishment of the synaptic alterations in the VPA rat model. En ligne : http://dx.doi.org/10.1186/s13229-021-00428-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459
in Molecular Autism > 12 (2021) . - 23 p.[article] Hippocampal neurons isolated from rats subjected to the valproic acid model mimic in vivo synaptic pattern: evidence of neuronal priming during early development in autism spectrum disorders [Texte imprimé et/ou numérique] / M. E. TRAETTA, Auteur ; M. G. CODAGNONE, Auteur ; N. A. UCCELLI, Auteur ; A. J. RAMOS, Auteur ; S. ZÁRATE, Auteur ; A. REINÉS, Auteur . - 23 p.
Langues : Anglais (eng)
in Molecular Autism > 12 (2021) . - 23 p.
Mots-clés : Animals Anticonvulsants Autism Spectrum Disorder/chemically induced/metabolism Behavior, Animal/drug effects Cells, Cultured Disease Models, Animal Female Hippocampus/drug effects/metabolism/ultrastructure Male Microglia/drug effects Neural Cell Adhesion Molecules/metabolism Neuronal Plasticity/drug effects Neurons/drug effects/metabolism/ultrastructure Phosphoprotein Phosphatases/metabolism Pregnancy Rats, Wistar Synapses/drug effects Valproic Acid Adhesion molecules Autism spectrum disorders Hippocampus Ncam Synapse VPA model Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorders (ASD) are synaptopathies characterized by area-specific synaptic alterations and neuroinflammation. Structural and adhesive features of hippocampal synapses have been described in the valproic acid (VPA) model. However, neuronal and microglial contribution to hippocampal synaptic pattern and its time-course of appearance is still unknown. METHODS: Male pups born from pregnant rats injected at embryonic day 10.5 with VPA (450 mg/kg, i.p.) or saline (control) were used. Maturation, exploratory activity and social interaction were assessed as autistic-like traits. Synaptic, cell adhesion and microglial markers were evaluated in the CA3 hippocampal region at postnatal day (PND) 3 and 35. Primary cultures of hippocampal neurons from control and VPA animals were used to study synaptic features and glutamate-induced structural remodeling. Basal and stimuli-mediated reactivity was assessed on microglia primary cultures isolated from control and VPA animals. RESULTS: At PND3, before VPA behavioral deficits were evident, synaptophysin immunoreactivity and the balance between the neuronal cell adhesion molecule (NCAM) and its polysialylated form (PSA-NCAM) were preserved in the hippocampus of VPA animals along with the absence of microgliosis. At PND35, concomitantly with the establishment of behavioral deficits, the hippocampus of VPA rats showed fewer excitatory synapses and increased NCAM/PSA-NCAM balance without microgliosis. Hippocampal neurons from VPA animals in culture exhibited a preserved synaptic puncta number at the beginning of the synaptogenic period in vitro but showed fewer excitatory synapses as well as increased NCAM/PSA-NCAM balance and resistance to glutamate-induced structural synaptic remodeling after active synaptogenesis. Microglial cells isolated from VPA animals and cultured in the absence of neurons showed similar basal and stimuli-induced reactivity to the control group. Results indicate that in the absence of glia, hippocampal neurons from VPA animals mirrored the in vivo synaptic pattern and suggest that while neurons are primed during the prenatal period, hippocampal microglia are not intrinsically altered. CONCLUSIONS: Our study suggests microglial role is not determinant for developing neuronal alterations or counteracting neuronal outcome in the hippocampus and highlights the crucial role of hippocampal neurons and structural plasticity in the establishment of the synaptic alterations in the VPA rat model. En ligne : http://dx.doi.org/10.1186/s13229-021-00428-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459