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← Human Body & HealthIf a patient with rheumatoid arthritis develops a genetic mutation causing constitutive activation of NF-κB in synovial fibroblasts, which consequence follows regarding the inflammatory prostaglandin pathway?
A)Increased pathway substrate turnover rate
B)Decreased COX-2 enzyme phosphorylation
C)Reduced prostaglandin receptor desensitization
D)Sustained COX-2 enzyme expression levels✓
💡 Explanation
Constitutive NF-κB activation leads to sustained transcription of COX-2, a key enzyme in prostaglandin synthesis, because NF-κB directly upregulates COX-2 gene expression. Therefore, COX-2 enzyme expression will remain elevated, rather than being downregulated or affected in terms of phosphorylation or receptor activity.
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