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5 Cards in this Set

  • Front
  • Back

Vitamines Liposolubles

AKED


Toxicité plus commune

Vitamine A

- f. active r.animal: retinol


- f. Provit r. Veg: carotenoid


-stockage: 90% foie retinyl ester


- role anti oxidant/ pigment oeil retinal/ immunité/ previent arteriosclerosis


- carence alteration peau/ cataract/ hemeralopie/ xerophtalmie


- 75000-10000 UI/jour dont moitie pro vit pr adulte


- 4-9 mg/jour pr enfant

Vit D

- ds alimentation


Veg ergocalcipherol D2


animal cholecalciferol D3


- precurseurs


Veg ergosterol


Animal 7 DHcholesterol


- role osteofarmation et maturation


- D3 est forme par 7DHcholestterol par presence du soleil


- carence rickits/ osteoporose/ osteocalcemie


- 400 UI nourissons


600UI enfance et femme allaitante

Vit E

- tocopherol alpha


- anti oxyant et anti vieillissement / limite plaque d atherome/ fertilite


- renforce par vit A et C


-carence anemie hemolytique

Vit k

- 2 formes: menaquinone/ phylloquinone


- sources: choux/ foie/ épinard/ salades/ céréales


-role: f coagulation/ carboxylation de osteocalcine


- carence: troubles d absorption / alimentation x equi + tx antibiotique


- injection nouveau ne et ph operatoires pr prevenir accidents hemorragiques