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Vit A - Fx
Antioxidant
Visual pigment
Vit A - Deficiency
Night blindness
Dry skin
Vit A - Excess
H
eadache/
H
epatomegaly
A
llopecia/
A
norexia
R
eally painful bones
D
ry skin/
D
rowsiness
Vit B1
Thiamine
Vit B1 - Fx
PDH
αKDH
Transketolase - key to test for in Thiamine deficiency
Vit B1 - Deficiency
Beri Beri (
alcoholics
)
Vit B2
Riboflavin
Vit B2 - Fx
cofactor in redox
Vit B2 - Deficiency
Cheliosis
Corneal vascularization
Vit B3
Niacin
B3 - Fx
constituent of NAD+ & NADP+
B3 - Deficiency
Pellagra ("
DDD
")
D
iarrhea
D
ementia
D
ermatitis
**Death
Vit B5
Pantothenate
B5 - Fx
component of CoA syn. to form acetyl CoA for metabolic pathways
B5 - Deficiency
Dermatitis
Enteritis
Vit B6
Pyridoxine
B6 - Fx
used in transamination (detox of
NH3
) & decarboxylations
B6 Deficiency
Convulsions
Peripheral neuropathy
Vit B12
Cobalamin
B12 - Fx
cofactor of
homocysteine
methyltransferase
&
m
ethylmalonyl CoA mutase
Homocysteine methyltransferase
Releases stored folate
Methylmalonyl CoA Mutase
Source of succinyl CoA (substitue for acetyl CoA in TCA)
B12 - Deficiency
macrocytic / megaloblastic anemia
Vit B9
Folate
B9 - Fx
converterd to THF
synthesis of DNA & RNA
B9 - Deficiency
macrocytic / megaloblastic anemia
Biotin - Fx
cofactor for caroylation enzymes
(i.e. FA synthesis; acetyl coA to FA)
Biotin - Deficiency
Maculosquamous Dermatitis (MCD)
Vit C - Fx
- Fe2+ absorption (keeps in Fe2+ state)
- Used for
Hydroylases
in collagen syn.
Vit C - Deficiency
Scurvy - decreased collagen type III (mesoderm)
Vit D - Fx
absorbs Ca2+
increase bone reabsorption
Vit D - Deficiency
Rickets (kids)
Osteomalacia (adults)
Vit E - Fx
protects erythrocytes from ROS damage
Vit E - Deficiency
- Hemolytic anemia
- Neurodysfunction
Vit K - Fx
catalyzes γ carboxylation
of glutamic residues on clotting proteins
Vit K - Deficiency
-
neonatal hemorrhage
w/↑PT and PTT but normal
bleeding time
-
(
-
)
by Warfarin
Author
bhugo85
ID
113472
Card Set
Vitamins
Description
Vitamins
Updated
10/31/2011, 10:22:31 PM
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