Hypervitaminosis A (original) (raw)
فرط الفيتامين أ (بالأنجليزية:Hypervitaminosis A) يشير إلى الآثار السامة نتيجة تناول جرعة زائدة من فيتامين أ.تظهر الأعراض نتيجة لتغيير التمثيل الغذائي للعظم وتغيير التمثيل الغذائي للفيتامينات الأخرى القابلة للذوبان في الدهون.ويعتقد أن فرط الفيتامين A حدث في البشر في وقت مبكر، واستمرت المشكلة طوال تاريخ البشرية.
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| dbo:abstract | فرط الفيتامين أ (بالأنجليزية:Hypervitaminosis A) يشير إلى الآثار السامة نتيجة تناول جرعة زائدة من فيتامين أ.تظهر الأعراض نتيجة لتغيير التمثيل الغذائي للعظم وتغيير التمثيل الغذائي للفيتامينات الأخرى القابلة للذوبان في الدهون.ويعتقد أن فرط الفيتامين A حدث في البشر في وقت مبكر، واستمرت المشكلة طوال تاريخ البشرية. (ar) Hypervitaminosis A refers to the toxic effects of ingesting too much preformed vitamin A (retinyl esters, retinol, and retinal). Symptoms arise as a result of altered bone metabolism and altered metabolism of other fat-soluble vitamins. Hypervitaminosis A is believed to have occurred in early humans, and the problem has persisted throughout human history. Toxicity results from ingesting too much preformed vitamin A from foods (such as fish liver or animal liver), supplements, or prescription medications and can be prevented by ingesting no more than the recommended daily amount. Diagnosis can be difficult, as serum retinol is not sensitive to toxic levels of vitamin A, but there are effective tests available. Hypervitaminosis A is usually treated by stopping intake of the offending food(s), supplement(s), or medication. Most people make a full recovery. High intake of provitamin carotenoids (such as beta-carotene) from vegetables and fruits does not cause hypervitaminosis A. (en) La hipervitaminosis A es la acumulación excesiva de Vitamina A en el organismo debido a la ingesta aumentada de esta, superando los requerimientos necesarios para el cuerpo. La vitamina A es liposoluble lo que hace que no se pueda eliminar fácilmente del cuerpo y se pueda acumular. La toxicidad de esta vitamina viene dada por consumos mayores a 15000μg para adultos y 6000μg para niños. (es) L'hypervitaminose A ou abus de vitamine A peut avoir les effets suivants : * maladies congénitales, * anomalies du foie (pouvant mener jusqu'à la cirrhose), * réduction de la densité osseuse pouvant conduire à l'ostéoporose, * croissance désordonnée des os, * pertes capillaires, * sécheresse excessive de la peau / desquamation. (fr) L'ipervitaminosi A si riferisce agli effetti tossici di ingerire troppa vitamina A preformata. I sintomi derivano dal metabolismo osseo alterato e dal metabolismo alterato di altre vitamine liposolubili. Si ritiene che l'ipervitaminosi A si sia verificata nei primi esseri umani e il problema si è protratto per tutta la storia umana. La tossicità deriva dall'ingestione di troppa vitamina A preformata dagli alimenti (come pesce o fegato animale), integratori o farmaci da prescrizione e può essere prevenuta ingerendo non più della quantità giornaliera raccomandata. La diagnosi può essere difficile, poiché il retinolo sierico non è sensibile ai livelli tossici di vitamina A, ma sono disponibili test efficaci. L'ipervitaminosi A viene solitamente trattata interrompendo l'assunzione di cibi incriminati, supplementi o farmaci. La maggior parte delle persone ha un pieno recupero. L'assunzione elevata di carotenoidi provitaminici (come il beta-carotene) da frutta e verdura non causa ipervitaminosi A, poiché la conversione dai carotenoidi alla forma attiva di vitamina A è regolata dall'organismo per mantenere un livello ottimale di vitamina. I carotenoidi stessi non possono produrre tossicità. (it) Hipervitaminose A refere-se à ingestão em excesso de vitamina A. A vitamina A faz com que células inchem com fluidos. Muita vitamina A causa rupturas em ambientes com poucos sais minerais. Essa toxicidade pode ser amenizada através de vitamina E (tocoferol), colesterol bom, zinco, taurina e cálcio. (pt) 维生素A过多症（英語：Hypervitaminosis A）是指因过量摄入维生素A而带来的中毒反应。 (zh) |
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| rdfs:comment | فرط الفيتامين أ (بالأنجليزية:Hypervitaminosis A) يشير إلى الآثار السامة نتيجة تناول جرعة زائدة من فيتامين أ.تظهر الأعراض نتيجة لتغيير التمثيل الغذائي للعظم وتغيير التمثيل الغذائي للفيتامينات الأخرى القابلة للذوبان في الدهون.ويعتقد أن فرط الفيتامين A حدث في البشر في وقت مبكر، واستمرت المشكلة طوال تاريخ البشرية. (ar) La hipervitaminosis A es la acumulación excesiva de Vitamina A en el organismo debido a la ingesta aumentada de esta, superando los requerimientos necesarios para el cuerpo. La vitamina A es liposoluble lo que hace que no se pueda eliminar fácilmente del cuerpo y se pueda acumular. La toxicidad de esta vitamina viene dada por consumos mayores a 15000μg para adultos y 6000μg para niños. (es) L'hypervitaminose A ou abus de vitamine A peut avoir les effets suivants : * maladies congénitales, * anomalies du foie (pouvant mener jusqu'à la cirrhose), * réduction de la densité osseuse pouvant conduire à l'ostéoporose, * croissance désordonnée des os, * pertes capillaires, * sécheresse excessive de la peau / desquamation. (fr) Hipervitaminose A refere-se à ingestão em excesso de vitamina A. A vitamina A faz com que células inchem com fluidos. Muita vitamina A causa rupturas em ambientes com poucos sais minerais. Essa toxicidade pode ser amenizada através de vitamina E (tocoferol), colesterol bom, zinco, taurina e cálcio. (pt) 维生素A过多症（英語：Hypervitaminosis A）是指因过量摄入维生素A而带来的中毒反应。 (zh) Hypervitaminosis A refers to the toxic effects of ingesting too much preformed vitamin A (retinyl esters, retinol, and retinal). Symptoms arise as a result of altered bone metabolism and altered metabolism of other fat-soluble vitamins. Hypervitaminosis A is believed to have occurred in early humans, and the problem has persisted throughout human history. Toxicity results from ingesting too much preformed vitamin A from foods (such as fish liver or animal liver), supplements, or prescription medications and can be prevented by ingesting no more than the recommended daily amount. (en) L'ipervitaminosi A si riferisce agli effetti tossici di ingerire troppa vitamina A preformata. I sintomi derivano dal metabolismo osseo alterato e dal metabolismo alterato di altre vitamine liposolubili. Si ritiene che l'ipervitaminosi A si sia verificata nei primi esseri umani e il problema si è protratto per tutta la storia umana. La tossicità deriva dall'ingestione di troppa vitamina A preformata dagli alimenti (come pesce o fegato animale), integratori o farmaci da prescrizione e può essere prevenuta ingerendo non più della quantità giornaliera raccomandata. (it) |
| rdfs:label | فرط فيتامين أ (ar) Hipervitaminosis A (es) Hypervitaminosis A (en) Hypervitaminose A (fr) Ipervitaminosi A (it) Hipervitaminose A (pt) 维生素A过多症 (zh) |
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