Vitamin E Flashcards
What is the most active form of vitamin E?
a-tocopherol
What are some food sources of vitamin E?
Vegetable Oils
Nuts,
Leafy Greens
Almonds
Cooked Spinach
Sunflower Seeds
How is vitamin E absorbed?
absorbed as micelles with other lipids
How is vitamin E transported?
transported into blood with chylomicrons
How is vitamin E delivered to tissues?
delivered to tissues by LDL
What is the upper limit of vitamin E?
1000mg
Vitamin E functions as an?
Antioxidant
Vitamin E protects?
cell membranes
How can vitamin E help to prevent cancer?
By decreasing free radicals
Vitamin E can decrease oxidation of LDL through what mechanism?
Decreased lipid peroxidation of polyunsaturated fatty acids.
In addition to aiding the immune system as an antioxidant, vitamin E also aids in?
Nucleic Acid / Protein Synthesis.
What is one of the most severe vitamin E deficiencies?
Hemolytic Anemia
In Hemolytic Anemia, what is occurring?
Breakage of RBC’s
(lack integrity of cell membrane structure - “disc shape”)
Vitamin E is also associated with _______ in newbornes?
Low Birth Weight
Vitamin E deficiency also has what effect on the nervous system?
Decreased neurological function
Fat ______ disorders are most commonly associated with vitamin E deficiency?
Fat Malabsorption
Vitamin E toxicity may cause?
Muscle Weakness
GI distress
Vitamin K Interference
Why is the upper limit of vitamin E established?
To prevent hemorrhage
What are two methods for vitamin E assessment?
Serum tocopherol
Hydrogen Peroxide Hemolysis Test
How does a hydrogen peroxide hemolysis test indicate vitamin E status?
greater hemolysis if deficient
