glycogen storage disease Flashcards

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1
Q

what is the Rate limiting enzyme for glycogen synthesis?

A

glycogen synthase

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2
Q

whats the rate limiting enzyme for glycogenolysis

A

glycogen phosphorylase

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3
Q

which enzyme turns

glucose -6- phosphate –> glucose

A

Glucose-6- phosphatase

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4
Q

which glycogen storage disease?

glycogen phosphorylase

deficiency

A

McArdle disease

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5
Q

which glycogen storage disease?

Glucose-6-phosphatase

dificiency

A

Von Gierke Disease

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6
Q

which glycogen storage disease?

Lactic acidosis

Hyperlipidemia

Hyperuricemia (gout)

A

Von Gierke disease

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7
Q

which glycogen storage disease?

a- 1,6- glucosidase

(debranching enzyme)

deficiency

A

Cori Disease

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8
Q

which glycogen storage disease?

a-1,4-glucosidase

(lysosomal acid a-1,4-glucosidase)

deficiency

Uworld: Acid a-glucosidase

A

Pompe disease

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9
Q

which glycogen storage disease?

cardiomegaly

(hypertrophic cardiomyopathy)

A

Pompe disease

(infantile type)

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10
Q

which glycogen storage disease?

Diaphragm weakness leading to respiratory failure

A

pomple disease

(adult type)

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11
Q

which glycogen storage disease?

Increased glycogen in liver

severe fasting HYPOglycemia

A

Von gierke disease

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12
Q

which glycogen storage disease?

hepatomegaly

hypoglycemia

hyperlipidemia

(NORMAL kidneys,

Normal lactate,

Normal Uric acid)

MUSCLE WEAKNESS / HYPOTONIA

A

Cori disease

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13
Q

which glycogen storage disease?

Painful muscle Cramps

myoglobinuria w/ strenuous exercise

A

McArdle Disease

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14
Q

Severe hepatosplenomegaly

Enlarged kidneys

Normal muscles

A

Von Gierke disease

normal muscles in contrast to

CORI disease (muscle weakness, hypotonia)

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15
Q

which glycogen storage disease?

accumulation of

limit dextrin like structures in cytosol

A

cori disease

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16
Q

which glycogen storage disease?

effects

heart

liver

muscle

A

pompe disease

17
Q

cardiomegaly

hypotonia

exercise intolerance

inc LDH, inc CK

accumulate glycogen in LYSOSOMES

A

POMPE

18
Q

which glycogen storage disease?

accumulate glycogen in lysosomes

enlarged muscles (tongue - macroglossia, enlarged liver)

A

pompe disease (type II)

19
Q

treatment of Von Gierke

A

frequent oral glucose/cornstarch at night

*** AVOIDANCE of

Frucrtose, Galactose, sucrose, lactose.

bc impaired gluconeogenesis and glycogenolysis

20
Q

treatment for pt that develops extensive muscle cramps and darkening of her urine after excerise.

Labs show inc CK, myoglobin

A

Oral ingestin of Sucrose