Lipoprotein Structure and Composition
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Questions and Answers

Describe the structure and composition of lipoprotein:

Polar lipid surface layer:

  • Phospholipids
  • Cholesterol
  • Apoprotein
  • Non-polar lipid core:
  • TG
  • Cholesterol ester

Classify the lipoprotein and define the biological function:

CM: transport of exogenous TG

  • VLDL: Transport of endogenous TG
  • IDL: Precursor of LDL
  • LDL: Cholesterol transport to peripheral cells
  • HDL: Reverse cholesterol transport

List laboratory tests include in lipid panel or lipid profile:

  • Total cholesterol
  • TG
  • LDL cholesterol
  • HDL Cholesterol
  • Lp
  • Apo B-100
  • Apo B-48
  • VLDL

How to collect blood samples for the study of lipids?

<ul> <li>Blood is collected after 12 to 14 hours of fasting</li> <li>Maintain a normal diet for two weeks before blood collection</li> <li>Do not drink alcohol in the evening before the collecting day ( Even between 12-14h of fasting )</li> <li>For people with MI or Stroke: blood can be collected within 24 h or after 3 months</li> </ul> Signup and view all the answers

According to serum appearance, lipemic or milky what substance can be present in the serum:

<ul> <li>Look at the serum that shows that it contains Chylomicron or VLDL, which is rich in TG.</li> </ul> Signup and view all the answers

What causes this type of lipid increase?

<ul> <li>Hyperlipidemia can cause complications with uncontrolled type 1 and 2 diabetes and this is due to a combination of decreased lipoprotein lipase activity and increased liver TG synthesis. It can exacerbate ( ធន់ធរ ) coexisting familial hyperlipidemia.</li> </ul> Signup and view all the answers

If treated properly and effectively, how long does it take for cholesterol and TG level to drop, as shown below?

<ul> <li>Serum cholesterol: 8 mmol / L ( 306 mg/dL )</li> <li>SerumTG:11mmol/L(974mg/dL)</li> </ul> <ul> <li>The patient was treated with insulin injection. His glucose level dropped rapidly and he was able to regain his stability by injecting insulin accordingly.</li> <li>After one week:</li> </ul> <ul> <li>Serum cholesterol: 8.0 mmol / L</li> <li>Serum TG: 11 mmol / L</li> </ul> <ul> <li>Diabetes well controlled:</li> </ul> <ul> <li>Cholesterol level: 6.0 mmol / L</li> <li>TG:5.3mmol/L</li> </ul> Signup and view all the answers

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