Lipid Biochemistry USMLE Step 1 Practice Question
A 22-year-old female presents with a fusiform swelling of the Achilles tendon, which, when biopsied, shows cholesterol-laden macrophages (foam cells) dispersed among the collagen fibers. She had been troubled with joint pains for several years. Both her mother and father developed arthritis associated with production of xanthomas, but their first symptoms occurred in middle age. She was referred to a nutritionist and treated with an enzyme inhibitor. Which of the following is most likely elevated in the blood of this female?
Answer choices
- AChylomicron remnants
- BChylomicrons
- CVery low density lipoproteins (VLDL)
- DLow density lipoproteins (LDL)Correct answer
- EHigh density lipoproteins (HDL)
- FIntermediate density lipoproteins (IDL)
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