Inflammation and Immune Pathology USMLE Step 1 Practice Question
A 55-year-old woman presents with community-acquired pneumonia. Vital signs show temperature 39.2°C, heart rate 112 bpm, respiratory rate 24/min, blood pressure 128/82 mmHg, and SpO2 92% on room air. Chest X-ray reveals left lower lobe consolidation. Laboratory studies demonstrate C-reactive protein 18 mg/dL (normal <3), ferritin 450 ng/mL, and normal procalcitonin. She denies recent immunosuppressive medication use. Which cytokine most directly stimulates hepatic production of these acute phase reactants?
Answer choices
- ATGF beta
- BIL 6Correct answer
- CIL 13
- DIL 4
- EIL 2
- FTNF-alpha
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