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Table 2 Arterial blood gas measurements in all groups

From: Crocin attenuates cigarette smoke-induced lung injury and cardiac dysfunction by anti-oxidative effects: the role of Nrf2 antioxidant system in preventing oxidative stress

Groups PO2(mmHg) PCO2(mmHg) pH
Control 105.50 ± 1.41 45.44 ± 2.42 7.340 ± 0.02
Crocin 100.87 ± 2.39 45.76 ± 1.98 7.362 ± 0.03
COPD 75.87 ± 3.08*** 53.72 ± 3.65** 7.287 ± 0.08**
COPD + Crocin 98.62 ± 1.40††† 46.45 ± 1.90††† 7.330 ± 0.03†††
  1. **P < 0.01 and ***P < 0.001, vs. control, †††P < 0.001 vs. COPD. All the groups were statistically compared by ANOVA followed by Tukey’s multiple comparison. Data are expressed as the mean + SEM, n = 8