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
Can occur secondary to alcoholism or thyroid disease
Vitamin B2 deficiency
26
Reduces blood pressure in individuals with a genetic predisposition to high blood pressure
Vitamin B2
27
Vitamin B3 is
Niacin
28
What are the two forms of niacin?
Niacin and nicotinamide
29
Nicotinamide (from niacin) is important because it functions in
NAD and NADP
30
Functions in the same redox reactions as B2
Niacin
31
What are three other functions of Niacin?
1. ) ATP production 2. ) Synthesis and metabolism of compound 3. ) Cholesterol metabolism
32
Functions in both glycolysis and the krebs cycel to generate aTP
Niacin
33
Involved in the synthesis of fatty acids, cholesterol, steroid hormones, DNA, Vitamin C, and folate
Niacin
34
Lowers LDL and raises HDL
Niacin
35
Niacin deficiency results in
Pellagra
36
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)
Pellagra
37
The symptoms of Pellagra are called the
4 D's 1. ) Dermatitis 2. ) Diarrhea 3. ) Dimentia 4. ) Death
38
High dose niacin supplements lowers -also can result in flushing and itching
Cholesterol
39
Vitamin B5 is
Pantothenic Acid
40
Panthotenic acid makes up a large chunk of
Acetyl-CoA
41
Like niacin, functions in both glycolysis and the krebs cycle to generate ATP
Vitamin B5
42
Important for the synthesis of heme, cholesterol, bile salts, phospholipids, fatty acids, and steroid hormones
B5 (pantothenic acid)
43
Vitamin B7 is
Biotin
44
Is typically bound to protein in food; usually does not affect bioavailability much
Biotin
45
A protein with very strong binding to biotin which inhibits biotin's absorption -Found in egg whites
Avidin
46
This effect of avidin is removed when they are
Cooked
47
Biotin serves its main function in
Carboxylation reactions
48
Biotin functions in catalyzing carboxylation reactions in which 4 things?
Gluconeogenesis, protein catabolism, fatty acid synthesis, and ATP production
49
Not common, but can result in intestinal diseases that block absorption
Biotin deficiency
50
Characterized by symptoms such as depression, hallucinations, skin irritation, infections, hair loss, poor muscle control, seizures, developmental delays
Biotin deficiency