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Auteur Paola VISCONTI |
Documents disponibles écrits par cet auteur (4)



Advanced glycation endproducts, dityrosine and arginine transporter dysfunction in autism - a source of biomarkers for clinical diagnosis / A. ANWAR in Molecular Autism, 9 (2018)
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[article]
Titre : Advanced glycation endproducts, dityrosine and arginine transporter dysfunction in autism - a source of biomarkers for clinical diagnosis Type de document : Texte imprimé et/ou numérique Auteurs : A. ANWAR, Auteur ; P. M. ABRUZZO, Auteur ; S. PASHA, Auteur ; K. RAJPOOT, Auteur ; A. BOLOTTA, Auteur ; A. GHEZZO, Auteur ; M. MARINI, Auteur ; A. POSAR, Auteur ; Paola VISCONTI, Auteur ; P. J. THORNALLEY, Auteur ; N. RABBANI, Auteur Article en page(s) : 3p. Langues : Anglais (eng) Mots-clés : Advanced glycation endproducts (AGEs) Amino acid metabolome Autism spectrum disorder (ASD) Machine learning Oxidative stress Ferrara (CE BIF) Index. décimale : PER Périodiques Résumé : Background: Clinical chemistry tests for autism spectrum disorder (ASD) are currently unavailable. The aim of this study was to explore the diagnostic utility of proteotoxic biomarkers in plasma and urine, plasma protein glycation, oxidation, and nitration adducts, and related glycated, oxidized, and nitrated amino acids (free adducts), for the clinical diagnosis of ASD. Methods: Thirty-eight children with ASD (29 male, 9 female; age 7.6 +/- 2.0 years) and 31 age-matched healthy controls (23 males, 8 females; 8.6 +/- 2.0 years) were recruited for this study. Plasma protein glycation, oxidation, and nitration adducts and amino acid metabolome in plasma and urine were determined by stable isotopic dilution analysis liquid chromatography-tandem mass spectrometry. Machine learning methods were then employed to explore and optimize combinations of analyte data for ASD diagnosis. Results: We found that children with ASD had increased advanced glycation endproducts (AGEs), Nepsilon-carboxymethyl-lysine (CML) and Nomega-carboxymethylarginine (CMA), and increased oxidation damage marker, dityrosine (DT), in plasma protein, with respect to healthy controls. We also found that children with ASD had increased CMA free adduct in plasma ultrafiltrate and increased urinary excretion of oxidation free adducts, alpha-aminoadipic semialdehyde and glutamic semialdehyde. From study of renal handling of amino acids, we found that children with ASD had decreased renal clearance of arginine and CMA with respect to healthy controls. Algorithms to discriminate between ASD and healthy controls gave strong diagnostic performance with features: plasma protein AGEs-CML, CMA-and 3-deoxyglucosone-derived hydroimidazolone, and oxidative damage marker, DT. The sensitivity, specificity, and receiver operating characteristic area-under-the-curve were 92%, 84%, and 0.94, respectively. Conclusions: Changes in plasma AGEs were likely indicative of dysfunctional metabolism of dicarbonyl metabolite precursors of AGEs, glyoxal and 3-deoxyglucosone. DT is formed enzymatically by dual oxidase (DUOX); selective increase of DT as an oxidative damage marker implicates increased DUOX activity in ASD possibly linked to impaired gut mucosal immunity. Decreased renal clearance of arginine and CMA in ASD is indicative of increased arginine transporter activity which may be a surrogate marker of disturbance of neuronal availability of amino acids. Data driven combination of these biomarkers perturbed by proteotoxic stress, plasma protein AGEs and DT, gave diagnostic algorithms of high sensitivity and specificity for ASD. En ligne : http://dx.doi.org/10.1186/s13229-017-0183-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=354
in Molecular Autism > 9 (2018) . - 3p.[article] Advanced glycation endproducts, dityrosine and arginine transporter dysfunction in autism - a source of biomarkers for clinical diagnosis [Texte imprimé et/ou numérique] / A. ANWAR, Auteur ; P. M. ABRUZZO, Auteur ; S. PASHA, Auteur ; K. RAJPOOT, Auteur ; A. BOLOTTA, Auteur ; A. GHEZZO, Auteur ; M. MARINI, Auteur ; A. POSAR, Auteur ; Paola VISCONTI, Auteur ; P. J. THORNALLEY, Auteur ; N. RABBANI, Auteur . - 3p.
Langues : Anglais (eng)
in Molecular Autism > 9 (2018) . - 3p.
Mots-clés : Advanced glycation endproducts (AGEs) Amino acid metabolome Autism spectrum disorder (ASD) Machine learning Oxidative stress Ferrara (CE BIF) Index. décimale : PER Périodiques Résumé : Background: Clinical chemistry tests for autism spectrum disorder (ASD) are currently unavailable. The aim of this study was to explore the diagnostic utility of proteotoxic biomarkers in plasma and urine, plasma protein glycation, oxidation, and nitration adducts, and related glycated, oxidized, and nitrated amino acids (free adducts), for the clinical diagnosis of ASD. Methods: Thirty-eight children with ASD (29 male, 9 female; age 7.6 +/- 2.0 years) and 31 age-matched healthy controls (23 males, 8 females; 8.6 +/- 2.0 years) were recruited for this study. Plasma protein glycation, oxidation, and nitration adducts and amino acid metabolome in plasma and urine were determined by stable isotopic dilution analysis liquid chromatography-tandem mass spectrometry. Machine learning methods were then employed to explore and optimize combinations of analyte data for ASD diagnosis. Results: We found that children with ASD had increased advanced glycation endproducts (AGEs), Nepsilon-carboxymethyl-lysine (CML) and Nomega-carboxymethylarginine (CMA), and increased oxidation damage marker, dityrosine (DT), in plasma protein, with respect to healthy controls. We also found that children with ASD had increased CMA free adduct in plasma ultrafiltrate and increased urinary excretion of oxidation free adducts, alpha-aminoadipic semialdehyde and glutamic semialdehyde. From study of renal handling of amino acids, we found that children with ASD had decreased renal clearance of arginine and CMA with respect to healthy controls. Algorithms to discriminate between ASD and healthy controls gave strong diagnostic performance with features: plasma protein AGEs-CML, CMA-and 3-deoxyglucosone-derived hydroimidazolone, and oxidative damage marker, DT. The sensitivity, specificity, and receiver operating characteristic area-under-the-curve were 92%, 84%, and 0.94, respectively. Conclusions: Changes in plasma AGEs were likely indicative of dysfunctional metabolism of dicarbonyl metabolite precursors of AGEs, glyoxal and 3-deoxyglucosone. DT is formed enzymatically by dual oxidase (DUOX); selective increase of DT as an oxidative damage marker implicates increased DUOX activity in ASD possibly linked to impaired gut mucosal immunity. Decreased renal clearance of arginine and CMA in ASD is indicative of increased arginine transporter activity which may be a surrogate marker of disturbance of neuronal availability of amino acids. Data driven combination of these biomarkers perturbed by proteotoxic stress, plasma protein AGEs and DT, gave diagnostic algorithms of high sensitivity and specificity for ASD. En ligne : http://dx.doi.org/10.1186/s13229-017-0183-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=354 Drapeaux verts et rouges. Dépistage précoce dans le trouble du spectre de l'autisme pour enfants de 0 à 3 ans / Gionata BERNASCONI
Titre : Drapeaux verts et rouges. Dépistage précoce dans le trouble du spectre de l'autisme pour enfants de 0 à 3 ans Type de document : Texte imprimé et/ou numérique Auteurs : Gionata BERNASCONI, Auteur ; Chiara LOMBARDONI, Auteur ; Nicolas RUDELLI, Auteur ; Gian Paolo RAMELLI, Collaborateur ; Erica SALOMONE, Collaborateur ; Evelyne THOMMEN, Collaborateur ; Bettina TILLMANN, Collaborateur ; Paola VISCONTI, Collaborateur ; Giacomo VIVANTI, Collaborateur ; Barbara BONGINI, Illustrateur Editeur : Bellinzone [Suisse] : Fondazione ARES Année de publication : 2021 Collection : Collana Strumenti di lavoro Importance : 111 p. Présentation : ill. Format : 17,5cm x 25,5cm x 1cm ISBN/ISSN/EAN : 978-88-85590-05-2 Note générale : Bibliogr. Langues : Français (fre) Index. décimale : AUT-D AUT-D - L'Autisme - Dépistage et Diagnostic Résumé : Dans le domaine du Trouble du Spectre de l’Autisme (TSA), l’importance d’un diagnostic précoce est reconnue au niveau international. En effet, plus tôt le diagnostic est formulé, plus tôt l’enfant et sa famille peuvent bénéficier d’une intervention appropriée. L’intervention précoce, contrairement à celle qui arrive plus tard, a un impact majeur sur le développement de l’enfant et sur la qualité de vie du système familial. Cet instrument naît de l’exigence d’impliquer de manière active et directe les professionnels et les volontaires qui opèrent dans le domaine de la petite enfance, dans le dépistage précoce de ces comportements particuliers qui pourraient conduire à un diagnostic de TSA.
Drapeaux Verts et Rouges n’est pas un instrument de diagnostic, mais un guide à l’observation, qui a pour but de faciliter la communication avec la famille et avec les professionnels qui s’occuperont, si nécessaire, d’approfondir l’aspect diagnostique. Le manuel a le double but de faciliter l’observation de l’enfant, au moyen de fiches agiles à administrer, et d’aider à communiquer ce qui a été observé de manière objective et efficace, grâce à la fiche récapitulative, jointe, qui aide à mettre en évidence d’éventuelles priorités de discussions. Le choix des comportements à observer a été effectué après avoir consulter différents articles sur les signes précoces des TSA. [Résumé d'Auteur/Editeur]Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=466 Drapeaux verts et rouges. Dépistage précoce dans le trouble du spectre de l'autisme pour enfants de 0 à 3 ans [Texte imprimé et/ou numérique] / Gionata BERNASCONI, Auteur ; Chiara LOMBARDONI, Auteur ; Nicolas RUDELLI, Auteur ; Gian Paolo RAMELLI, Collaborateur ; Erica SALOMONE, Collaborateur ; Evelyne THOMMEN, Collaborateur ; Bettina TILLMANN, Collaborateur ; Paola VISCONTI, Collaborateur ; Giacomo VIVANTI, Collaborateur ; Barbara BONGINI, Illustrateur . - Bellinzone [Suisse] : Fondazione ARES, 2021 . - 111 p. : ill. ; 17,5cm x 25,5cm x 1cm. - (Collana Strumenti di lavoro) .
ISBN : 978-88-85590-05-2
Bibliogr.
Langues : Français (fre)
Index. décimale : AUT-D AUT-D - L'Autisme - Dépistage et Diagnostic Résumé : Dans le domaine du Trouble du Spectre de l’Autisme (TSA), l’importance d’un diagnostic précoce est reconnue au niveau international. En effet, plus tôt le diagnostic est formulé, plus tôt l’enfant et sa famille peuvent bénéficier d’une intervention appropriée. L’intervention précoce, contrairement à celle qui arrive plus tard, a un impact majeur sur le développement de l’enfant et sur la qualité de vie du système familial. Cet instrument naît de l’exigence d’impliquer de manière active et directe les professionnels et les volontaires qui opèrent dans le domaine de la petite enfance, dans le dépistage précoce de ces comportements particuliers qui pourraient conduire à un diagnostic de TSA.
Drapeaux Verts et Rouges n’est pas un instrument de diagnostic, mais un guide à l’observation, qui a pour but de faciliter la communication avec la famille et avec les professionnels qui s’occuperont, si nécessaire, d’approfondir l’aspect diagnostique. Le manuel a le double but de faciliter l’observation de l’enfant, au moyen de fiches agiles à administrer, et d’aider à communiquer ce qui a été observé de manière objective et efficace, grâce à la fiche récapitulative, jointe, qui aide à mettre en évidence d’éventuelles priorités de discussions. Le choix des comportements à observer a été effectué après avoir consulter différents articles sur les signes précoces des TSA. [Résumé d'Auteur/Editeur]Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=466 ContenuExemplaires (7)
Code-barres Cote Support Localisation Section Disponibilité DOC0006226 AUT-D BER Livre Centre d'Information et de Documentation du CRA Rhône-Alpes AUT - L'Autisme Disponible DOC0006225 AUT-D BER Livre Centre d'Information et de Documentation du CRA Rhône-Alpes AUT - L'Autisme Disponible DOC0006224 AUT-D BER Livre Centre d'Information et de Documentation du CRA Rhône-Alpes AUT - L'Autisme Disponible DOC0006223 AUT-D BER Livre Centre d'Information et de Documentation du CRA Rhône-Alpes AUT - L'Autisme Disponible DOC0006222 AUT-D BER Livre Centre d'Information et de Documentation du CRA Rhône-Alpes AUT - L'Autisme Exclu du prêt DOC0006221 AUT-D BER Livre Centre d'Information et de Documentation du CRA Rhône-Alpes AUT - L'Autisme Disponible DOC0006220 AUT-D BER Livre Centre d'Information et de Documentation du CRA Rhône-Alpes AUT - L'Autisme Disponible Les abonnés qui ont emprunté ce document ont également emprunté :
Apprendre aux enfants autistes à comprendre la pensée des autres HOWLIN, Patricia Cuisiner et aimer avec Adrien et Super-A. Leçons de vie pour enfants avec autisme ou TDAH JENSEN, Jessica Je suis joyeux CHIEN CHOW CHINE, Aurélie 30 grandes notions de psychopathologie de l'enfant et de l'adolescent DE KERNIER, Nathalie Ajuster la météo intérieure des enfants JEAN, Manon Oscar et ses super-pouvoirs ! WALSH, Melanie Na(+) , K(+) -ATPase activity in children with autism spectrum disorder: Searching for the reason(s) of its decrease in blood cells / A. BOLOTTA in Autism Research, 11-10 (October 2018)
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[article]
Titre : Na(+) , K(+) -ATPase activity in children with autism spectrum disorder: Searching for the reason(s) of its decrease in blood cells Type de document : Texte imprimé et/ou numérique Auteurs : A. BOLOTTA, Auteur ; Paola VISCONTI, Auteur ; G. FEDRIZZI, Auteur ; A. GHEZZO, Auteur ; M. MARINI, Auteur ; P. MANUNTA, Auteur ; E. MESSAGGIO, Auteur ; A. POSAR, Auteur ; A. VIGNINI, Auteur ; P. M. ABRUZZO, Auteur Article en page(s) : p.1388-1403 Langues : Anglais (eng) Mots-clés : Nrf2 Na+, K+-ATPase autism spectrum disorders beta-actin endogenous ouabain erythrocyte membrane membrane lipids metals oxidative stress Index. décimale : PER Périodiques Résumé : Na(+) , K(+) -ATPase (NKA) activity, which establishes the sodium and potassium gradient across the cell membrane and is instrumental in the propagation of the nerve impulses, is altered in a number of neurological and neuropsychiatric disorders, including autism spectrum disorders (ASD). In the present work, we examined a wide range of biochemical and cellular parameters in the attempt to understand the reason(s) for the severe decrease in NKA activity in erythrocytes of ASD children that we reported previously. NKA activity in leukocytes was found to be decreased independently from alteration in plasma membrane fluidity. The different subunits were evaluated for gene expression in leukocytes and for protein expression in erythrocytes: small differences in gene expression between ASD and typically developing children were not apparently paralleled by differences in protein expression. Moreover, no gross difference in erythrocyte plasma membrane oxidative modifications was detectable, although oxidative stress in blood samples from ASD children was confirmed by increased expression of NRF2 mRNA. Interestingly, gene expression of some NKA subunits correlated with clinical features. Excess inhibitory metals or ouabain-like activities, which might account for NKA activity decrease, were ruled out. Plasma membrane cholesterol, but not phosphatidylcholine and phosphatidlserine, was slighty decreased in erythrocytes from ASD children. Although no compelling results were obtained, our data suggest that alteration in the erytrocyte lipid moiety or subtle oxidative modifications in NKA structure are likely candidates for the observed decrease in NKA activity. These findings are discussed in the light of the relevance of NKA in ASD. Autism Res 2018, 11: 1388-1403. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: The activity of the cell membrane enzyme NKA, which is instrumental in the propagation of the nerve impulses, is severely decreased in erythrocytes from ASD children and in other brain disorders, yet no explanation has been provided for this observation. We strived to find a biological/biochemical cause of such alteration, but most queries went unsolved because of the complexity of NKA regulation. As NKA activity is altered in many brain disorders, we stress the relevance of studies aimed at understanding its regulation in ASD. En ligne : http://dx.doi.org/10.1002/aur.2002 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=369
in Autism Research > 11-10 (October 2018) . - p.1388-1403[article] Na(+) , K(+) -ATPase activity in children with autism spectrum disorder: Searching for the reason(s) of its decrease in blood cells [Texte imprimé et/ou numérique] / A. BOLOTTA, Auteur ; Paola VISCONTI, Auteur ; G. FEDRIZZI, Auteur ; A. GHEZZO, Auteur ; M. MARINI, Auteur ; P. MANUNTA, Auteur ; E. MESSAGGIO, Auteur ; A. POSAR, Auteur ; A. VIGNINI, Auteur ; P. M. ABRUZZO, Auteur . - p.1388-1403.
Langues : Anglais (eng)
in Autism Research > 11-10 (October 2018) . - p.1388-1403
Mots-clés : Nrf2 Na+, K+-ATPase autism spectrum disorders beta-actin endogenous ouabain erythrocyte membrane membrane lipids metals oxidative stress Index. décimale : PER Périodiques Résumé : Na(+) , K(+) -ATPase (NKA) activity, which establishes the sodium and potassium gradient across the cell membrane and is instrumental in the propagation of the nerve impulses, is altered in a number of neurological and neuropsychiatric disorders, including autism spectrum disorders (ASD). In the present work, we examined a wide range of biochemical and cellular parameters in the attempt to understand the reason(s) for the severe decrease in NKA activity in erythrocytes of ASD children that we reported previously. NKA activity in leukocytes was found to be decreased independently from alteration in plasma membrane fluidity. The different subunits were evaluated for gene expression in leukocytes and for protein expression in erythrocytes: small differences in gene expression between ASD and typically developing children were not apparently paralleled by differences in protein expression. Moreover, no gross difference in erythrocyte plasma membrane oxidative modifications was detectable, although oxidative stress in blood samples from ASD children was confirmed by increased expression of NRF2 mRNA. Interestingly, gene expression of some NKA subunits correlated with clinical features. Excess inhibitory metals or ouabain-like activities, which might account for NKA activity decrease, were ruled out. Plasma membrane cholesterol, but not phosphatidylcholine and phosphatidlserine, was slighty decreased in erythrocytes from ASD children. Although no compelling results were obtained, our data suggest that alteration in the erytrocyte lipid moiety or subtle oxidative modifications in NKA structure are likely candidates for the observed decrease in NKA activity. These findings are discussed in the light of the relevance of NKA in ASD. Autism Res 2018, 11: 1388-1403. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: The activity of the cell membrane enzyme NKA, which is instrumental in the propagation of the nerve impulses, is severely decreased in erythrocytes from ASD children and in other brain disorders, yet no explanation has been provided for this observation. We strived to find a biological/biochemical cause of such alteration, but most queries went unsolved because of the complexity of NKA regulation. As NKA activity is altered in many brain disorders, we stress the relevance of studies aimed at understanding its regulation in ASD. En ligne : http://dx.doi.org/10.1002/aur.2002 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=369
in Drapeaux verts et rouges. Dépistage précoce dans le trouble du spectre de l'autisme pour enfants de 0 à 3 ans / Gionata BERNASCONI
Titre : Les signes précoces dans le Trouble du Spectre de l'Autisme Type de document : Texte imprimé et/ou numérique Auteurs : Paola VISCONTI, Auteur Année de publication : 2021 Importance : p.25-29 Langues : Français (fre) Index. décimale : AUT-D AUT-D - L'Autisme - Dépistage et Diagnostic Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=466 Les signes précoces dans le Trouble du Spectre de l'Autisme [Texte imprimé et/ou numérique] / Paola VISCONTI, Auteur . - 2021 . - p.25-29.
in Drapeaux verts et rouges. Dépistage précoce dans le trouble du spectre de l'autisme pour enfants de 0 à 3 ans / Gionata BERNASCONI
Langues : Français (fre)
Index. décimale : AUT-D AUT-D - L'Autisme - Dépistage et Diagnostic Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=466 Exemplaires
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