Vitamin E Flashcards

1
Q

What is the most active form of vitamin E?

A

a-tocopherol

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2
Q

What are some food sources of vitamin E?

A

Vegetable Oils
Nuts,
Leafy Greens
Almonds
Cooked Spinach
Sunflower Seeds

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3
Q

How is vitamin E absorbed?

A

absorbed as micelles with other lipids

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4
Q

How is vitamin E transported?

A

transported into blood with chylomicrons

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5
Q

How is vitamin E delivered to tissues?

A

delivered to tissues by LDL

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6
Q

What is the upper limit of vitamin E?

A

1000mg

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7
Q

Vitamin E functions as an?

A

Antioxidant

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8
Q

Vitamin E protects?

A

cell membranes

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9
Q

How can vitamin E help to prevent cancer?

A

By decreasing free radicals

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10
Q

Vitamin E can decrease oxidation of LDL through what mechanism?

A

Decreased lipid peroxidation of polyunsaturated fatty acids.

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11
Q

In addition to aiding the immune system as an antioxidant, vitamin E also aids in?

A

Nucleic Acid / Protein Synthesis.

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12
Q

What is one of the most severe vitamin E deficiencies?

A

Hemolytic Anemia

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13
Q

In Hemolytic Anemia, what is occurring?

A

Breakage of RBC’s

(lack integrity of cell membrane structure - “disc shape”)

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14
Q

Vitamin E is also associated with _______ in newbornes?

A

Low Birth Weight

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15
Q

Vitamin E deficiency also has what effect on the nervous system?

A

Decreased neurological function

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16
Q

Fat ______ disorders are most commonly associated with vitamin E deficiency?

A

Fat Malabsorption

17
Q

Vitamin E toxicity may cause?

A

Muscle Weakness
GI distress
Vitamin K Interference

18
Q

Why is the upper limit of vitamin E established?

A

To prevent hemorrhage

19
Q

What are two methods for vitamin E assessment?

A

Serum tocopherol
Hydrogen Peroxide Hemolysis Test

20
Q

How does a hydrogen peroxide hemolysis test indicate vitamin E status?

A

greater hemolysis if deficient