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The study examines how rifampicin influences P-glycoprotein (ABCB1) expression in different macrophage types.

Impact of rifampicin on P-glycoprotein (ABCB1) expression in M1 and M2 macrophages derived from the THP-1 monocytic cell line or peripheral blood mononuclear cells

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The study examines how rifampicin influences P-glycoprotein (ABCB1) expression in different macrophage types.
THP-1 cells differentiated into macrophages using phorbol 12-myristate-13-acetate
Macrophages polarized to M1 or M2 using specific cytokines
Peripheral blood mononuclear cells (PBMC) differentiated and polarized similarly
Macrophages exposed to rifampicin and evaluated for ABCB1, ABCG2, and SLCO2B1 via qPCR and Western blot
Statistical analyses utilizing linear regression and three-way ANOVA to assess significance
Rifampicin increased ABCB1 expression fivefold in THP-1-derived M1 and sixfold in M2 cells
Protein levels of P-glycoprotein increased by 50% in THP-1 cells
No significant changes in ABCB1 expression in PBMC-derived macrophages
ABCG2 expression enhanced twofold in THP-1-derived M2 cells
SLCO2B1 expressions remained unchanged by rifampicin

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Research investigates rifampicin's effect on P-glycoprotein in THP-1 and PBMC-derived macrophages, indicating differential responses.

Hamburg et al. (2026) studied this question.

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