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"name": "Comment diagnostiquer une déficience en tyrosine phénol-lyase ?",
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"text": "Un diagnostic se fait par des tests génétiques et des analyses biochimiques."
}
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"@type": "Question",
"name": "Quels tests sont utilisés pour évaluer l'activité de l'enzyme ?",
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"text": "Des tests enzymatiques dans des échantillons de sang ou d'urine sont utilisés."
}
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"@type": "Question",
"name": "Quels symptômes peuvent indiquer un problème avec cette enzyme ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des symptômes neurologiques et des troubles métaboliques peuvent survenir."
}
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"@type": "Question",
"name": "La biopsie est-elle nécessaire pour le diagnostic ?",
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"name": "Quels marqueurs biochimiques sont associés à cette enzyme ?",
"position": 5,
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"@type": "Question",
"name": "Quels sont les symptômes d'une déficience en tyrosine phénol-lyase ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes incluent des troubles neurologiques, des retards de développement et des crises."
}
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{
"@type": "Question",
"name": "Les symptômes apparaissent-ils dès la naissance ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes peuvent apparaître à la naissance ou se développer progressivement."
}
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{
"@type": "Question",
"name": "Y a-t-il des symptômes digestifs associés ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des troubles digestifs peuvent survenir, mais ils sont moins fréquents."
}
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{
"@type": "Question",
"name": "Les symptômes sont-ils réversibles ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certains symptômes peuvent être gérés, mais d'autres peuvent être permanents."
}
},
{
"@type": "Question",
"name": "Comment les symptômes évoluent-ils avec l'âge ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes peuvent s'aggraver avec l'âge, nécessitant une surveillance continue."
}
},
{
"@type": "Question",
"name": "Peut-on prévenir la déficience en tyrosine phénol-lyase ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "La prévention est difficile, mais un dépistage néonatal peut aider à une détection précoce."
}
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{
"@type": "Question",
"name": "Le dépistage génétique est-il recommandé ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le dépistage génétique est recommandé pour les familles à risque de transmettre la maladie."
}
},
{
"@type": "Question",
"name": "Y a-t-il des conseils diététiques préventifs ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Un régime alimentaire équilibré et pauvre en tyrosine peut être conseillé pour les porteurs."
}
},
{
"@type": "Question",
"name": "Les femmes enceintes doivent-elles être testées ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les femmes enceintes ayant des antécédents familiaux devraient envisager un dépistage."
}
},
{
"@type": "Question",
"name": "Quelles sont les recommandations pour les porteurs sains ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les porteurs sains doivent être informés des risques et des options de dépistage."
}
},
{
"@type": "Question",
"name": "Quel est le traitement principal pour la déficience en tyrosine phénol-lyase ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le traitement principal consiste en un régime alimentaire pauvre en tyrosine."
}
},
{
"@type": "Question",
"name": "Des médicaments sont-ils disponibles pour cette condition ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Actuellement, il n'existe pas de médicaments spécifiques pour traiter cette déficience."
}
},
{
"@type": "Question",
"name": "La thérapie génique est-elle une option ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "La thérapie génique est en recherche, mais pas encore disponible en pratique clinique."
}
},
{
"@type": "Question",
"name": "Comment gérer les crises associées à cette condition ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les crises peuvent être gérées par des médicaments anticonvulsivants et un suivi médical."
}
},
{
"@type": "Question",
"name": "Le suivi médical est-il nécessaire ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Un suivi médical régulier est essentiel pour ajuster le traitement et surveiller les symptômes."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent survenir avec cette déficience ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des complications neurologiques et des troubles de développement peuvent survenir."
}
},
{
"@type": "Question",
"name": "Les complications sont-elles évitables ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines complications peuvent être évitées par un traitement précoce et approprié."
}
},
{
"@type": "Question",
"name": "Y a-t-il des risques de maladies associées ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les patients peuvent être à risque accru de troubles psychiatriques et métaboliques."
}
},
{
"@type": "Question",
"name": "Comment les complications affectent-elles la qualité de vie ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications peuvent gravement affecter la qualité de vie et nécessiter un soutien."
}
},
{
"@type": "Question",
"name": "Les complications peuvent-elles être traitées ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines complications peuvent être gérées avec des traitements symptomatiques appropriés."
}
},
{
"@type": "Question",
"name": "Quels sont les facteurs de risque pour cette déficience ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les antécédents familiaux de troubles métaboliques sont un facteur de risque majeur."
}
},
{
"@type": "Question",
"name": "La consanguinité augmente-t-elle le risque ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la consanguinité peut augmenter le risque de transmission de la déficience."
}
},
{
"@type": "Question",
"name": "Les facteurs environnementaux jouent-ils un rôle ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les facteurs environnementaux n'ont pas été clairement établis comme des risques directs."
}
},
{
"@type": "Question",
"name": "Les hommes et les femmes sont-ils également affectés ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "La déficience affecte généralement les deux sexes de manière égale."
}
},
{
"@type": "Question",
"name": "Les facteurs génétiques sont-ils déterminants ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des mutations génétiques spécifiques sont souvent responsables de la déficience."
}
}
]
}
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}
Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China. zhengrc@zjut.edu.cn.
Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China. zhengrc@zjut.edu.cn.
Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
School of Bioscience and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom; Department of Nutrition, Dietetics, and Food, Monash University, Notting Hill, Victoria Australia.
Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Department of Ecology and Evolutionary Biology, Fudan University, Songhu Road 2005, Shanghai 200438, China.
Children's Hospital Oakland Research Institute, University of California, San Francisco Benioff Children's Hospital Oakland, Oakland, CA 94609 jsaba@chori.org.
Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China; Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
Department of Agroindustry and Food Quality, Andalusian Institute of Agricultural and Fisheries Research and Training, Córdoba, Spain; Foods for Health Group, Instituto Maimónides de Investigación Biomédica de Córdoba, 14004, Córdoba, Spain. Electronic address: mariag.pereira@juntadeandalucia.es.
Department of Chemistry, King Saud University, 11451, Riyadh, Saudi Arabia; School of Medicine, Dentistry and Nursing, University of Glasgow, G12 8QQ, Glasgow, UK. Electronic address: alan.crozier@gla.ac.uk.
Enzymes with high catalytic activity and stability are essential for industrial production, yet most natural enzymes do not meet these requirements. Therefore, efficient strategies for enzyme engineer...
Tyrosine phenol-lyase (TPL), which is expressed in intestinal bacteria, catalyzes the formation of phenol from the substrate L-Tyr. Bacterial metabolite phenol and the sulfate conjugate (phenyl sulfat...
Tyrosine phenol lyase (TPL) synthesises L-tyrosine derivatives from monophenols, pyruvate and ammonia. Production of such high-value aromatic chemicals from biomass-derived raw materials is of great i...
Inborn errors of tyrosine metabolism result in patient's inability to degrade tyrosine. Current treatment consists of a phenylalanine and tyrosine restricted diet and nitisinone, causing a block in th...
A mango pulp purée was ingested by ileostomists, whose colon had been removed surgically, and subjects with a full gastrointestinal (GI) tract, after which ileal fluid, urine and feces were collected ...
Following ingestion of fruits, vegetables and derived products, (poly)phenols that are not absorbed in the upper gastrointestinal tract pass to the colon, where they undergo microbiota-mediated ring f...
Lignin is a key metabolite for terrestrial plants. Two types of aromatic amino acids, phenylalanine (Phe) and tyrosine (Tyr), serve as the precursors for lignin biosynthesis. In most plant species, Ph...
A modular site-selective iron-catalyzed radical amination of a number of phenol-containing biomolecules such as tyrosine-containing peptides, estrogens, and other phenol-based pharmaceuticals has been...
Free or conjugated aromatic/phenolic acids arise from the diet, endogenous metabolism of catecholamines (adrenaline, noradrenaline, dopamine), protein (phenylalanine, tyrosine), pharmaceuticals (aspir...
Rosmarinic acid (RA) and salvianolic acid B (SAB) are main phenolic acids in Salvia miltiorrhiza Bunge have been widely used in the treatment of cardiovascular and cerebrovascular diseases due to thei...