Plasma Proteins Flashcards
Functions of plasma proteins
Nutrition Fluid exchange Buffering Binding and transport Enzymes Hormones Blood coagulation Viscosity Defense Reserve proteins Tumors markers Antiproteases
Major gourds of proteins found by salting out method
Fibrinogen
Albumin
Globulins
Major proteins found by electrophoresis
Albumin Alpha 1 globulins Alpha 2 globulins Beta globulins Gamma globulins
Major protein in blood
Albumin
Amount of albumin in human plasma
3.4-4.7 g/dL
Percentage of albumin in plasma protein
60%
Proportion of albumin in plasma and in extra cellular space
40% in plasma
60% in extracellular space
Half life of albumin
20 days
Fastest protein to migrate in electrophoresis
Albumin
Protein that precipitates last in salting out methods
Albumin
Amount of albumin produced per day
12g
First form of albumin during synthesis
Preproprotein
Functions of albumin
Colloidal osmotic pressure Maintenance of blood volume and body fluid distribution Transport function Nutritive function Buffering action Viscosity Blood brain barrier
Protein responsible for 75-80% of osmotic pressure
Albumin
Hypoalbuminemia causes …
Edema due to fluid retentiojn
Can albumin bind various ligands
Yes
Type of substances carried by albumin
Free fatty acids Calcium Steroid hormones Bilirubin Copper Some drugs Sulfonamides Penicillin G Dicoumarol Phenytoin Aspirin
Type of nutrients provided by albumin for tissue protein synthesis
Amino acids
Protein with maximum buffering capacity
Albumin
Viscosity of albumin
Low
How can albumin cause Kernicterus
If person takes drug, drug can easily replace bilirubin and released bilirubin go to brain
Level in hypoalbuminemia
Low
Is there tetany in hypoalbuminemia due to low calcium
No
Is there drug interaction with albumin binding
Yes
Example of drugs that can have drug interactions due to albumin
Phenytoin Dicoumarol interaction
 Conditions in which there is hypoalbuminemia
Cirrhosis of liver malnutrition nephritic syndrome burns malabsorption Analbuminemia
Solution that can separate each globulins
Half situation with ammonium sulfate
Types of globulins obtained by electrophoresis
Globulin alpha 1
Globulin alpha 2
Globulin beta
Globulin gamma
Globulins type synthesized in the liver
Globulin Alpha
globulin beta
Where are globulin gamma synthesized
Plasma cells and B cells of lymphoid tissues
The synthesis of gamma globulin increases or decreases in chronic conditions like Chronic infections ,chronic liver disease, leukemia, lymphomas …
Increases
What type of molecule are globulins
Glycoproteins
Examples of alpha-1 globulins
Alpha-1 anti-trypsin
Alpha 1 acid glycoprotein ( orosomucoid )
Alpha 1 fetoproteinn
Major component of alpha-1 fraction of human plasma
Alpha-1 anti-trypsin (alpha-1 antiprotease)
Principal serine protease inhibitor of plasma
Alpha 1 anti trypsin
Function of alpha-1 anti-trypsin
Inhibits trypsin
Inhibit elastase
Major genotype of alpha-1 anti-trypsin in
MM
MM deficiency can lead to this pulmonary disease
Emphysema
What is the function of antitrypsin in the lung
Protect them from proteases
Group of people exposed to emphysema
Smokers
How does smoking creates emphysema
Oxidizes methionine I;alpha 1 antitrypsin which inactivâtes it.
Can z variant of alpha 1 antitrypsin cause cirrhosis of liver
Yes
Osoromucoid concentration in plasma
0.6 g/dL to 1.4 g/dL
Percentage of carbohydrates in osoromucoid
41%
What’s alpha globulin is a marker of acute inflammation, act as a transporter for progesterone, and transport carbohy to site of injury
Osoromucoid