Journal: Frontiers in Physiology
Article Title: The possible mechanisms linking chronic obstructive pulmonary disease and coronary atherosclerosis based on coronary computed tomography angiography and animal experiments
doi: 10.3389/fphys.2026.1688832
Figure Lengend Snippet: KEAP1–NRF2-mediated oxidative stress participates in the occurrence of COPD combined with CAS in mice. (A) PFT for FRC, RI, Cdyn, and MV in mice. (B) The histopathological changes of lung tissues observed using H&E staining. (C) Serum lipid levels in mice measured via ELISA. (D) KEAP1, NRF2, NQO1, and HO-1 levels in the serum of mice determined via RT-qPCR. (E) Levels of ROS and MDA, and activities of SOD and catalase in the lung tissue of mice measured using kits. (F) Representative Western blotting of KEAP1, NRF2, NQO1, and HO-1 proteins in the lung tissue of mice and the quantification data. n = 6 mice for each treatment. Data among multiple groups were compared using one-way ANOVA, followed by Tukey’s post-hoc tests for multiple comparisons. COPD, chronic obstructive pulmonary disease; CAS, coronary atherosclerosis; PFT, pulmonary function test; FRC, functional residual capacity; RI, resistance index; Cdyn, dynamic compliance; MV, minute ventilation; ROS, reactive oxygen species; MDA, malondialdehyde; SOD, superoxide dismutase.
Article Snippet: Serum KEAP1 and Nrf2 levels were measured using a human KEAP1 enzyme-linked immunosorbent assay (ELISA) kit (EH4240, Wuhan Fine Biotech Co., Ltd., Wuhan, Hubei, China) and a human Nrf2 ELISA kit (abs551899, Absin Bioscience Inc., Shanghai, China) according to the manufacturer’s instructions.
Techniques: Staining, Enzyme-linked Immunosorbent Assay, Quantitative RT-PCR, Western Blot, Functional Assay