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18 Cards in this Set
- Front
- Back
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characteristics of carotenoids
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polyisoprenoid (chol)
symmetrical ring on each end some are precursors to Vit A double bonds (clear rads) |
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lycopene, lutein, Beta crytoxanthine
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carotenoids
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source of carotenoids
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yellow, green, orange food
oils |
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source for carotenoid defic
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no fat diet
non-digestible lipids def bile fat malapsorption |
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distribution of carotenoids
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all tiss
esp liver, adipose, plasma testes, adrenals, corpus luteum not much in brain |
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associated with cancer but treatment studies don't support
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carotenoids
may be marker for healthy lifestyle, prevention may be early |
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carotenoids essential when...
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No Vit A in diet
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transport of vit a
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RBP- retinyl esters
act like detergents destroy tissues |
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fate of retinol esters
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converted to retinol in liver
carried in RBC via RBP used & returned |
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function of Vit A
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support differentiation of mucus cell
maintain epis repro eye- dim light |
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sources of preformed A
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liver, milk (whole or fortified), eggs
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defficiency in Vit A
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fat malabsorp or metab
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most common cause of blindness in world
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vit A def
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Vit A toxicity
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liver, dry lips, scaly peeling skin, hair loss, HA Naus, vomit
200mg or more |
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functions of vit K
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clotting
-II, VII, IX & X -warfarin inhibits regen of vit K from K epoxide (via reductase) -get epoxide when glutamate picks up Ca for PL Bone -osteocalcin |
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causes of K deficiency
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lipid malapsorption
chronic Abx liver dz |
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storage of vit K
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liver
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prolonged clot time is what vit deficiency
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vit K deficiency
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