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Table 5 Effect of selected environmental factors on cytochromes metabolic activity

From: Modulation of CYP2E1 metabolic activity in a cohort of confirmed caffeine ingesting pregnant women with preterm offspring

 

Charbroiled meat

Charcoal fumes

Acetaminophen

Cytochrome metabolic activity

Exposed (n = 46)

Unexposed (n = 44)

p

Exposed (n = 5)

Unexposed (n = 85)

p

Exposed (n = 6)

Unexposed (n = 84)

p

CYP1A2 a

0.11

(0.02–0.30)

0.05

(0.01–0.16)

NS

0.13

(0.05–0.13)

0.05

(0.02–0.18)

NS

0.05

(0.02–0.09)

0.05

(0.02–0.18)

NS

CYP2E1 b

0.52

(0.18–1.80)

0.26

(0.01–0.81)

† 0.02

0.40

(0.39–1.79)

0.40

(0.02–1.25)

NS

2.0

(1.24–4.46)

0.39

(0.02–1.13)

† 0.02

CYP2E1 c

0.09

(0.02–0.20)

0.05

(0.01–0.15)

NS

0.08

(0.08–0.15)

0.07

(0.02–0.16)

NS

0.12

(0.04–0.20)

0.07

(0.02–0.15)

NS

  1. Values expressed as median (IQR)
  2. †Mann–Whitney’s U test; NS non-significant p value
  3. Metabolic activity:
  4. aParaxanthine/caffeine nanomolar ratio
  5. bTheobromine/caffeine nanomolar ratio
  6. cTheophylline/Caffeine nanomolar ratio