Amylase (AMY) Flashcards

1
Q

other name for amylase

A

Alpha 1,4-glucan-4-glucohydrolase

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2
Q

function of amylase

A
  • digestion and absorption of carbohydrates
  • breakdown of branching linkages of polysaccharides
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3
Q

breakdown of starch and glycogen via

A

alpha, 1-6 branching linkages

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4
Q

major tissues involved in amylase

A

pancreas
salivary gland

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5
Q

minor tissues involved in amylase

A

Fallopian tube
Adipose tissue
Skeletal muscle
Small Intestine

FASS

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6
Q

Clinical Significance of Amylase

A

Acute pancreatitis
Renal Failture
Parotitis
Mumps

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7
Q

Most frequent in male; extreme pain while sleeping

A

Acute pancreatitis

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8
Q

fastest to elevate in acute pancreatitis

A

Amylase

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9
Q

Rise of amylase after onset of attack

A

2-12 hrs

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10
Q

Peak of Amylase (AP)

A

24 Hrs

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11
Q

Incase of AP it Normalize Amylase within

A

3-4 days

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12
Q

is amylase normal in urine

A

yes

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13
Q

smallest enzyme present in plasma

A

amylase

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14
Q

Relationship between levels of amylase in plasma and urine

A

Directly proportional

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15
Q

Amylase level: Renal Disease

A

Increase in Plasma
Decrease in Urine

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16
Q

Amylase level: Acute Pancreatitis

A

Increase in Plasma & Urine

17
Q

Isoenzymes of Amylase

A

Salivary Amylase (S Type)
Pancreatic Amylase (P Type)

18
Q

Salivary Amylase Characteristics

A

Ptyalin
Fast moving

19
Q

Pancreatic Amylase Characteritics

A

Amylopsin
Slow moving

20
Q

Amylase Methodologies

A

Amyloclastic
Saccharogenic
Chromogenic
Continuous Monitoring

SACC

21
Q

Coupling of several enzyme to measure enzyme activity

A

Continuous monitoring

22
Q

measures the disappearance of starch substance

A

Amyloclastic

23
Q

measures the appearance of substance (starch —> reducing sugar)

A

Saccharogenic

24
Q

measures increasing color from product
(Insoluble starch dye - soluble starch dye)

A

Chromogenic

25
Q

Iodine reacts only with

A

Complex sugars

26
Q

Amyloclastic: Once the enzyme attacks the substrate it will result to

A

decrease substrate concentration

27
Q

Amyloclastic: If the substrate concentration decreases what will happen next

A

Starch releases simple sugars = Iodine will not react with it = Decrease color intensity

28
Q

Amyloclastic: Substitute for Starch as substrate

A

Glycogen

29
Q

If glycogen will react to iodine it will produce

A

Mahogany brown color

30
Q

Saccharogenic: once the amylase attacks starch, starch will release

A

reducing sugar

31
Q

Saccharogenic: Reducing sugar from Starch has what kind of relationship to enzyme activity

A

Directly proportional

32
Q

Chromogenic: Insoluble starch dye will produce fragment, fragment is responsible for

A

Color reaction

33
Q

Chromogenic: product produced has what kind of relationship to enzyme activity

A

Directly Proportional

34
Q

Continuous Monitoring Assay:

Last enzyme involved in reaction

A

Oxidoreductase

35
Q

Continuous Monitoring Assay:

Last reaction

A

conversion of coenzyme (NAD –> NADH)

36
Q

Continuous Monitoring Assay:

Measures absorbance at?

A

Increase @340 nm

37
Q

Continuous Monitoring Assay:

Second substrate, indicator used

A

A-glucosidase
Hexokinase
G-6-PD