The "ATP" B-Vitamins (B1, B2, B3, B5, and B7) Flashcards

1
Q

Vitamin B1 is

A

Thiamine

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2
Q

Thiamin is a form of B1, but what is the active cofactor form?

A

Thiamine Pyrophosphate (TPP)

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3
Q

Increases the absorption and bioavailability of Thiamine

A

Vitamin C

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4
Q

Decreases the absorption and bioavailability of thiamine

A

Oxidants in foods and alcohol

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5
Q

Vitamin B1 (Thiamine) has which 4 main functions?

A

ATP production, DNA/RNA synthesis, NADPH synthesis, Nerve function

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6
Q

Plays a role in the conversion of pyruvate to acetyl-CoA, the krebs cycle, and the pentose-phosphate pathway

A

Vitamin B1

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7
Q

Thiamin triphosphate functions in

A

Nerve function

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8
Q

Vitamin B1 deficiency results in

A

Beri Beri

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9
Q

What are the 4 forms of Beri Beri?

A

Dry, Wet, Infantile, and Cerebral

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10
Q

Severe muscle wasting, leg cramps, tenderness, decreased feeling in feet and toes (peripheral neuropathy)

A

Dry Beri Beri

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11
Q

Swelling (edema) of arms and legs, enlargement of heart, breathing problems, possible heart failure

A

Wet Beri Beri

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12
Q

Seen in babies breast-fed by thiamin-deficient mothers

-Leads to Heart failure

A

Infantile Beri Beri

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13
Q

Often caused by alcoholism (low B1 intake + impaired absorption)

-Characterized by involuntary movement and paralysis of the eye, poor muscle coordination, confusion and short-term memory loss

A

Cerebral (Wernicke-Korsakoff Syndrome)

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14
Q

Vitamin D deficiency has also been shown to be a prevalent thing in

A

Heart Failure

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15
Q

Vitamin B2 is

A

Riboflavin

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16
Q

What are the two active cofactor forms of Riboflavin?

A

Flavin Adenine Dinucleotide (FAD) and Flavin Mononucleotide (FMN)

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17
Q

Plays an important role in the generation of 4 ATP for each citric acid cycle

A

Riboflavin

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18
Q

What are the 4 main functions of riboflavin?

A
  1. ) Redox reactions for generation of NADPH
  2. ) ATP production
  3. ) Synthesis or activation of vitamins
  4. ) Neurotransmitter metabolism
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19
Q

Functions in the krebs cycle and the use of fatty acids for ATP production

A

Vitamin B2 (Riboflavin)

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20
Q

Vitamin B2 plays a role in the synthesis or activation of which 5 vitamins?

A

A, Folate, Niacin, B6, and K

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21
Q

B2 functions in the neurotransmitter metabolism of

A

Dopamine and norepinephrine

22
Q

Vitamin B2 deficiency results in

A

Ariboflavinosis

23
Q

Isolated deficiency is rare, and generally occurs in instances of malnutrition and multiple micronutrient deficiencies

A

Vitamin B2

24
Q

Characterized by muscle weakness, mouth and lip sources (cheilosis), mouth inflammation (stomatitis), enlarged and inflamed tongue (glossitis)

A

Ariboflavinosis

25
Q

Can occur secondary to alcoholism or thyroid disease

A

Vitamin B2 deficiency

26
Q

Reduces blood pressure in individuals with a genetic predisposition to high blood pressure

A

Vitamin B2

27
Q

Vitamin B3 is

A

Niacin

28
Q

What are the two forms of niacin?

A

Niacin and nicotinamide

29
Q

Nicotinamide (from niacin) is important because it functions in

A

NAD and NADP

30
Q

Functions in the same redox reactions as B2

A

Niacin

31
Q

What are three other functions of Niacin?

A
  1. ) ATP production
  2. ) Synthesis and metabolism of compound
  3. ) Cholesterol metabolism
32
Q

Functions in both glycolysis and the krebs cycel to generate aTP

A

Niacin

33
Q

Involved in the synthesis of fatty acids, cholesterol, steroid hormones, DNA, Vitamin C, and folate

A

Niacin

34
Q

Lowers LDL and raises HDL

A

Niacin

35
Q

Niacin deficiency results in

A

Pellagra

36
Q

Once was very common in the Southern U.S. due to corn being the primary source of protein (corn is low in both niacin and tryptophan)

A

Pellagra

37
Q

The symptoms of Pellagra are called the

A

4 D’s

  1. ) Dermatitis
  2. ) Diarrhea
  3. ) Dimentia
  4. ) Death
38
Q

High dose niacin supplements lowers

-also can result in flushing and itching

A

Cholesterol

39
Q

Vitamin B5 is

A

Pantothenic Acid

40
Q

Panthotenic acid makes up a large chunk of

A

Acetyl-CoA

41
Q

Like niacin, functions in both glycolysis and the krebs cycle to generate ATP

A

Vitamin B5

42
Q

Important for the synthesis of heme, cholesterol, bile salts, phospholipids, fatty acids, and steroid hormones

A

B5 (pantothenic acid)

43
Q

Vitamin B7 is

A

Biotin

44
Q

Is typically bound to protein in food; usually does not affect bioavailability much

A

Biotin

45
Q

A protein with very strong binding to biotin which inhibits biotin’s absorption

-Found in egg whites

A

Avidin

46
Q

This effect of avidin is removed when they are

A

Cooked

47
Q

Biotin serves its main function in

A

Carboxylation reactions

48
Q

Biotin functions in catalyzing carboxylation reactions in which 4 things?

A

Gluconeogenesis, protein catabolism, fatty acid synthesis, and ATP production

49
Q

Not common, but can result in intestinal diseases that block absorption

A

Biotin deficiency

50
Q

Characterized by symptoms such as depression, hallucinations, skin irritation, infections, hair loss, poor muscle control, seizures, developmental delays

A

Biotin deficiency