13 Questions
What is the composition of Lipoprotein X?
Phospholipids and non-esterified cholesterol
How are cholesterol esters delivered into HDL lipoproteins?
By LCAT converting free cholesterol into cholesterol esters
What enzyme converts free cholesterol into cholesterol esters?
LCAT
How does Lipoprotein (a) differ from LDL in terms of clearance?
Poorly cleared by LDL receptors
What is the significance of elevated levels of Lipoprotein (a)?
Increased risk of premature CHD and stroke
Which condition leads to the production of Lipoprotein X?
Biliary cirrhosis or cholestasis
What is the charge of plasma lipoproteins at alkaline pH?
Negatively charged
How are plasma lipoproteins separated during electrophoresis?
By charge
What is the primary function of staining the various fractions after electrophoresis?
To quantitatively assess the fractions
Which band corresponds to VLDL in a fasting patient undergoing electrophoresis?
pre-ß-band
Why did Fredrickson use electrophoresis for dyslipidemia classification?
To classify types of dyslipidemia
What is the purpose of holding plasma/serum vertically at 4ºC for 18 hours?
To note the appearance after refrigeration
What does a clear subnatant with a creamy layer on top indicate?
Chylomicronemia (exogenous hypertriglyceridemia)
Test your knowledge on lipoproteins like Lipoprotein (a) and Lipoprotein X with this quiz. Learn about their composition, characteristics, and impact on health.
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