Objective of the work. To evaluate the role of vitamins supplementation in human pathology associated with metabolic disorders of homocysteine. Homocysteine is an amino acid that is formed in the body starting from the methionine. The metabolism of homocysteine is regulated by vitamins B6, B12, folic acid and betaine. The factors determining hyperhomocysteinemia are: genetic, diet, kidney disorders and other medical conditions. This report describes 4 italian subjects with severe hyperhomocysteinemia. Methodological Detail. The genetic screening was carried out by Next Generation Sequencing (NGS). These innovative technologies allow a complete genome sequences. This approach is particularly promising for the diagnosis of pediatric neuromuscular diseases, endocrine, metabolic disorders, etc. that are characterized by a strong clinical and genetic heterogeneity. Using NGS it is possible to perform a genetic diagnosis without limiting to a single candidate gene. Main Results of the study. Combining clinical data with the report resulting from exome sequencing we identify site specific mutations in each subject. The genetic screening allowed a correct diagnosis and therapy with vitamin supplements B6 (oral supplementation), B12 (parenteral supplementation), folic acid (oral supplementation) and betaine (oral supplementation) each one administered individually. The therapy fully corrected metabolic abnormalities and clinical signs (table 1). Implications, meanings, conclusion that can be drawn from the data. The therapy with vitamin B complex supplementation has been effective in many forms of hyperhomocysteinemia as well as in these forms of severe hyperhomocysteinemia. Nowdays the therapy with vitamin B12 consists in parenteral supplementations. In the next future, it would be desiderable to have a formulation useful for oral therapy for both cianocobalamin and hydroxycobalamin. In addition, it would be desirable to have a unique pool of vitamin B complex (B6, B12, folic acid, betaine) hopefully complexed with food, for an oral therapy easier for patients.
Valutare il ruolo nutraceutico di integratori vitaminici nella patologia umana associata a disturbi metabolici dell'omocisteina. L'omocisteina è un aminoacido che si forma nel corpo a partire dalla metionina. Il metabolismo dell'omocisteina è regolato dalle vitamine B6, B12, acido folico e betaine. I fattori che determinano l'iperomocisteinemia sono: genetica, dieta, disturbi renali e altre condizioni mediche. Questo lavoro descrive 4 soggetti italiani con grave iperomocisteinemia. Lo screening genetico è stato eseguito mediante Next Generation Sequencing (NGS). Questa tecnologia innovativa consente di poter sequenziare l’interol genoma. Questo approccio è particolarmente promettente per la diagnosi di malattie neuromuscolari pediatriche, endocrine, disturbi metabolici, ecc., caratterizzati da una forte eterogeneità clinica e genetica. Utilizzando NGS è possibile eseguire una diagnosi genetica senza limitare l’attenzione a un singolo gene candidato. Combinando i dati clinici con il report derivante dalla sequenza dell’ esoma, individuiamo le mutazioni potenzialmente causative dei fenotipi osservati. Lo screening genetico ha consentito una corretta diagnosi e terapia con integratori vitaminici B6 (supplementazione orale), B12 (integratore parenterale), acido folico (supplemento orale) e betaina (supplemento orale), ciascuna somministrata individualmente. La terapia ha interamente corretto le anomalie metaboliche ei segni clinici (tabella 1). La terapia con integrazione complessa di vitamina B è stata efficace in molte forme di iperomocisteinemia ed anche in queste forme di iperomocisteinaemia. Oggi la terapia con vitamina B12 consiste in integratori parenterali. Nel prossimo futuro, sarebbe opportuno avere una formulazione utile per la terapia orale sia per il cianocobalamina che per l'idrossicobalamina. Inoltre, sarebbe auspicabile avere un pool unico di complesso vitamina B (B6, B12, acido folico, betaino) sperimentato complessivamente con il cibo, per una terapia orale più facile per i pazienti.
Possibile interazione tra i livelli plasmatici dell'omocisteina e le abitudini alimentari come fattori di rischio per lo sviluppo di patologie nell’uomo umana: Il ruolo nutraceutico dei supplementi vitaminici / Favuzzi, Giovanni. - (2017). [10.14274/UNIFG/FAIR/362081]
Possibile interazione tra i livelli plasmatici dell'omocisteina e le abitudini alimentari come fattori di rischio per lo sviluppo di patologie nell’uomo umana: Il ruolo nutraceutico dei supplementi vitaminici
FAVUZZI, GIOVANNI
2017-01-01
Abstract
Objective of the work. To evaluate the role of vitamins supplementation in human pathology associated with metabolic disorders of homocysteine. Homocysteine is an amino acid that is formed in the body starting from the methionine. The metabolism of homocysteine is regulated by vitamins B6, B12, folic acid and betaine. The factors determining hyperhomocysteinemia are: genetic, diet, kidney disorders and other medical conditions. This report describes 4 italian subjects with severe hyperhomocysteinemia. Methodological Detail. The genetic screening was carried out by Next Generation Sequencing (NGS). These innovative technologies allow a complete genome sequences. This approach is particularly promising for the diagnosis of pediatric neuromuscular diseases, endocrine, metabolic disorders, etc. that are characterized by a strong clinical and genetic heterogeneity. Using NGS it is possible to perform a genetic diagnosis without limiting to a single candidate gene. Main Results of the study. Combining clinical data with the report resulting from exome sequencing we identify site specific mutations in each subject. The genetic screening allowed a correct diagnosis and therapy with vitamin supplements B6 (oral supplementation), B12 (parenteral supplementation), folic acid (oral supplementation) and betaine (oral supplementation) each one administered individually. The therapy fully corrected metabolic abnormalities and clinical signs (table 1). Implications, meanings, conclusion that can be drawn from the data. The therapy with vitamin B complex supplementation has been effective in many forms of hyperhomocysteinemia as well as in these forms of severe hyperhomocysteinemia. Nowdays the therapy with vitamin B12 consists in parenteral supplementations. In the next future, it would be desiderable to have a formulation useful for oral therapy for both cianocobalamin and hydroxycobalamin. In addition, it would be desirable to have a unique pool of vitamin B complex (B6, B12, folic acid, betaine) hopefully complexed with food, for an oral therapy easier for patients.File | Dimensione | Formato | |
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