Vitamines Flashcards

1
Q

Vitamine C

A

Rôle: oxydo-réduction, collagène
Carence: scorbut

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2
Q

Choline

A

Rôles: transfert groupe méthyle, influx nerveux, métabolisme graisse
Carences: pérose, foie gras

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3
Q

Vitamine B1

A

Rôles: carences:Métabolisme glucide (pyruvate en acétyl-CoA
Carence: béribéri, polynévrite aviaire, polyencéphalomalacie, épisthotonos

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4
Q

Vitamine B2 (riboflavine)

A

Rôles: transport H (FMN, FAD)
Carences: cheillite, curled-toe-paralysis

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5
Q

Vitamine B3 (niacine)

A

Rôles: transport H (NAD, NADP)
synthèse à partir tryptophane (mais pauvre)
Carences: pellagre (4d)

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6
Q

Vitamine B6

A

Rôles: transamination, décarboxylation
Carences: acrodynie

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7
Q

Vitamine B5

A

Rôles: métabolisme (acétylation, énergie tissus
Carences: pas de l’oie

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8
Q

Vitamine B8

A

Rôles: apport biotine, groupement carboxyle
Carences: dermatite

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9
Q

Vitamine B9

A

plusieurs forme
Rôles: transfert groupement mono carboné
Carences: anémie hyperchrome macrocytaire et leucopénie

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10
Q

Vitamine B12

A

synthèse bactérie seulement, besoin cobalt, de concert avec B9, absorption avec facteur intrinsèque
Rôles: synthèse A.A., globule rouge et ADN
Carences: anémie pernicieuse

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