vitamins Flashcards

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1
Q

vit D deficiency in elderly pts is often due to:

A

poor nutritional intake

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2
Q

How does vit D deficiency affects Calcium , phosphorus and parathyroid function?

A

Hypocalcemia, hypophosphatemia and hyperparathyroidism

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3
Q

why does ALP is ↑ in Vit D deficiency ?

A

Hyperactivity of Osteoblasts

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4
Q

Biotin is Vit

A

B7

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5
Q

Thiamine is vit

A

B1

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6
Q

Biotin is involved mainly in ______ reaction

A

Carboxilation

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7
Q

Riboflavin is Vit

A

B2

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8
Q

Only water -soluble vitamin that is not made into a co-enzyme

A

Ascorbate

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9
Q

Vit B5 is

A

Pantothenic Acid

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10
Q

Pellagra, def in vit B3 may also be related to def of

A

Tryptophan

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11
Q

vit b9 is is

A

Folic acid

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12
Q

Body stores of folic acid are usually depleted in how long?

A

in 3 months

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13
Q

MCC of Folate deficiency

A

Alcoholism and pregnancy, hemodialysis,

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14
Q

with correction of hyperhomocysteinemia through _____ supplementation there is a reduction in stroke risk

A

Folate

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15
Q

MCC of B12 def)??

A

Pernicious anemia, also aging.

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16
Q

Resection of terminal ileum and bacterial overgrwoth of terminal ileum leads to which vit def?

A

Cyanocobalamin B12

17
Q

High dose niacin can be used to treat

A

Hyperlipidemia

18
Q

This Vitamin is mainly associated with Decarboxylation reactions

A

Thiamine

19
Q

Rarely, vegans or infection w/ D. latum can make you deficient in Vitamin

A

B12

20
Q

Most common cause of thiamine B1 def is

A

Alcoholism

21
Q

too much iron in mitochondria leads to

A

sideroblastic

22
Q

most CC of vit C def is

A

diet deficient in citrus fruits and green vegetables

23
Q

Adrenal Failure is a distinguished feature of this EXTREMLY RARE vitamin Deficiency

A

B5 vitamin

24
Q

bottled Fed infant with formula that is overheated can develop …

A

Scurvy if is not supplemented with Vit C

25
Q

Why in Scurvy collagen fibers are less stable than nl?

A

bc proline and lysine are not hydroxilated. H bonding within the triple helices does not take place.

26
Q

The intrinsic factor/B12 complex binds to receptors in:

A

the terminal ileum,

27
Q

Methylmalonic acid will be ____ in B12 deficiency

A

increased

28
Q

Folate deficiency will present with neurologic symptoms?

A

NO