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Acides aminés, peptides et protéines
Protéines
Hémoprotéines
Cytochromes
Cytochrome P-450 enzyme system
Famille-2 de cytochromes P450
Limonène hydroxylases
Cytochrome P-450 CYP2C9
Cytochrome P-450 CYP2C9 : Questions médicales fréquentes
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{
"@type": "Question",
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"@type": "Question",
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"@type": "Question",
"name": "Quels symptômes d'une mauvaise métabolisation ?",
"position": 6,
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"text": "Des nausées, des saignements ou des réactions allergiques peuvent survenir."
}
},
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"@type": "Question",
"name": "Comment reconnaître une surdose de médicaments ?",
"position": 7,
"acceptedAnswer": {
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"text": "Des symptômes comme des vertiges, des saignements ou des douleurs abdominales peuvent indiquer une surdose."
}
},
{
"@type": "Question",
"name": "Quels signes d'une interaction médicamenteuse ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des effets secondaires inattendus ou une efficacité réduite des médicaments peuvent être des signes."
}
},
{
"@type": "Question",
"name": "Quels symptômes d'une carence en CYP2C9 ?",
"position": 9,
"acceptedAnswer": {
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"text": "Une carence peut entraîner des effets indésirables graves lors de l'utilisation de certains médicaments."
}
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{
"@type": "Question",
"name": "Quels symptômes d'une toxicité médicamenteuse ?",
"position": 10,
"acceptedAnswer": {
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"text": "Des symptômes comme des éruptions cutanées, des troubles gastro-intestinaux peuvent apparaître."
}
},
{
"@type": "Question",
"name": "Comment prévenir les effets indésirables ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Un suivi régulier et des tests génétiques peuvent aider à prévenir les effets indésirables."
}
},
{
"@type": "Question",
"name": "Quels conseils pour les patients sous anticoagulants ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les patients doivent être informés des signes de saignement et des interactions possibles."
}
},
{
"@type": "Question",
"name": "Comment éviter les interactions médicamenteuses ?",
"position": 13,
"acceptedAnswer": {
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"text": "Informer les médecins de tous les médicaments pris aide à éviter les interactions."
}
},
{
"@type": "Question",
"name": "Quels tests préventifs pour CYP2C9 ?",
"position": 14,
"acceptedAnswer": {
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"text": "Des tests génétiques avant le traitement peuvent aider à prévenir des complications."
}
},
{
"@type": "Question",
"name": "Comment sensibiliser sur CYP2C9 ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des campagnes d'information sur les risques et les tests génétiques peuvent sensibiliser."
}
},
{
"@type": "Question",
"name": "Comment ajuster les doses pour CYP2C9 ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les doses doivent être ajustées en fonction des tests génétiques et des réponses cliniques."
}
},
{
"@type": "Question",
"name": "Quels médicaments sont métabolisés par CYP2C9 ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des médicaments comme la warfarine, le phénytoïne et certains AINS sont métabolisés par CYP2C9."
}
},
{
"@type": "Question",
"name": "Comment gérer les interactions médicamenteuses ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Il est essentiel de surveiller les interactions et d'ajuster les traitements en conséquence."
}
},
{
"@type": "Question",
"name": "Quels traitements alternatifs pour les déficients ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des alternatives médicamenteuses avec un métabolisme différent peuvent être envisagées."
}
},
{
"@type": "Question",
"name": "Comment traiter une surdose liée à CYP2C9 ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le traitement peut inclure l'arrêt du médicament et des soins symptomatiques."
}
},
{
"@type": "Question",
"name": "Quelles complications d'une mauvaise métabolisation ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des complications comme des saignements graves ou des réactions allergiques peuvent survenir."
}
},
{
"@type": "Question",
"name": "Quels risques d'une surdose ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une surdose peut entraîner des complications graves, y compris des dommages organiques."
}
},
{
"@type": "Question",
"name": "Comment gérer les complications liées à CYP2C9 ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une surveillance étroite et un ajustement des traitements sont nécessaires pour gérer les complications."
}
},
{
"@type": "Question",
"name": "Quels effets à long terme d'une déficience ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une déficience peut entraîner des effets à long terme sur la santé, comme des maladies chroniques."
}
},
{
"@type": "Question",
"name": "Quelles complications liées aux interactions ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les interactions peuvent provoquer des complications comme des hospitalisations ou des traitements prolongés."
}
},
{
"@type": "Question",
"name": "Quels facteurs influencent CYP2C9 ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des facteurs comme la génétique, l'âge et l'alimentation influencent l'activité de CYP2C9."
}
},
{
"@type": "Question",
"name": "Comment l'âge affecte CYP2C9 ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'âge avancé peut réduire l'activité de CYP2C9, augmentant le risque d'effets indésirables."
}
},
{
"@type": "Question",
"name": "Quel rôle de l'alimentation sur CYP2C9 ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines substances alimentaires peuvent inhiber ou induire l'activité de CYP2C9."
}
},
{
"@type": "Question",
"name": "Quels médicaments augmentent le risque ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des médicaments comme les antifongiques peuvent inhiber CYP2C9, augmentant le risque d'effets indésirables."
}
},
{
"@type": "Question",
"name": "Comment les maladies hépatiques affectent CYP2C9 ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les maladies hépatiques peuvent réduire l'activité de CYP2C9, affectant le métabolisme des médicaments."
}
}
]
}
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This study evaluated the effects of SHR0302 on the pharmacokinetics of cytochrome P450 (CYP) probe substrates....
We performed a single-centre, open-label, three-period drug-drug interaction (DDI) study in 24 healthy subjects (NCT05392127). Subjects received a single oral dose of 5 mg warfarin (CYP2C9), 20 mg ome...
The exposure of S-warfarin and repaglinide were comparable before and after SHR0302 administration. AUC of midazolam was not affected by SHR0302, whereas the administration of SHR0302 slightly decreas...
The results demonstrated that co-administration of SHR0302 8 mg once daily is unlikely to have a clinically meaningful effect on the exposure of drugs metabolized by CYP3A4, CYP2C8, CYP2C9 and CYP2C19...
The response to warfarin, as an oral anticoagulant agent, varies widely among patients from different ethnic groups. In this study, we tried to ascertain and determine the relationship between non-gen...
Overall, 200 warfarin-treated patients with stable doses were recruited, the demographic and clinical characteristics were documented, and genotyping was done using a sequencing assay....
The outcomes of our investigation showed that the genetic polymorphisms of VKORC1(-1639 G > A), CYP2C9*3, CYP2C9*2, amiodarone use, and increasing age were found to be related to a significantly lower...
We proposed and validated a population-specific dosing algorithm based on genetic and non-genetic determinants for Iranian patients and evaluated its performance. Accordingly, by using this newly deve...
The use of volatile biomarkers in exhaled breath as predictors to individual drug response would advance the field of personalised medicine by providing direct information on enzyme activity. This wou...
With the availability of detailed genomic data on all 57 human cytochrome P450 genes, it is clear that there is substantial variability in gene product activity with functionally significant polymorph...
Icaritin (ICT) is a prenylflavonoid derivative that has been approved by National Medical Products Administration for the treatment of hepatocellular carcinoma. This study aims to evaluate the potenti...
Methysticin is one of the naturally occurring bioactive constituents extracted from...
The cytochrome P450 (CYP) 2C9 enzyme plays a role in the metabolization of clopidogrel. Carriage of a CYP2C9 loss-of-function (LoF) allele has been associated with attenuated pharmacokinetics, leading...
In this study, we aimed to determine the effect of the CYP2C9*2 and *3 LoF alleles on thrombotic events. Therefore, a post hoc analysis was performed in 878 patients with available CYP2C9 genotype sta...
A total of 526 (60%) patients were CYP2C9 LoF allele noncarriers and 352 (40%) were CYP2C9 LoF allele (*2 or *3) carriers. After correction for differences in baseline characteristics, there were no s...
Carriers of a CYP2C9 *2 or *3 LoF allele presenting with acute coronary syndrome and treated with clopidogrel did not have an increased risk for thrombotic events compared with noncarriers. Given the ...
The regulated biosynthesis of chlorophyll is important because of its effects on plant photosynthesis and dry biomass production. In this study, a map-based cloning approach was used to isolate the cy...
In this study, the drug-drug interaction potential of vatiquinone with cytochrome P450 (CYP) substrates was investigated in both in vitro and clinical studies....
The inhibitory potential of vatiquinone on the activity of CYPs 1A2, 2B6, 2C8, 2C9, 2C19, 2D6, and 3A4/5 was assessed in vitro. In an open-label, drug-drug interaction study in 18 healthy human subjec...
In vitro, vatiquinone inhibited CYP2C9 (IC...
The in vitro and clinical studies demonstrated vatiquinone has a low potential to affect the pharmacokinetics of concomitantly administered medications that are metabolized by CYP enzymes....
Understanding cannabis-drug interactions is critical given regulatory changes that have increased access to and use of cannabis. Cannabidiol (CBD) and Δ-9-tetrahydrocannabinol (Δ9-THC), the most abund...