Skip to main content

Table 2 Inductive effects of gallic acid, acetylsalicylic acid and their combinations on the specific activities of hepatic phases I and II drug metabolizing enzymes in mice

From: Polyphenols of Salix aegyptiaca modulate the activities of drug metabolizing and antioxidant enzymes, and level of lipid peroxidation

Groups→

Parameters

↓

Control

25 mg/kg acetylsalicylic acid

50 mg/kg acetylsalicylic acid

100 mg/kg gallic acid

100 mg/kg gallic acid + 25 mg/kg acetylsalicylic acid

100 mg/kg gallic acid + 50 mg/kg acetylsalicylic acid

Cyt P450 R (μmole of NADPH oxidized/min/mg protein)

0.183 ± 0.002

(100)

0.214 ± 0.014

(116.67)

0.231 ± 0.004#

(126.26)

0.267 ± 0.009§

(145.61)

0.291 ± 0.004§€

(158.58)

0.306 ± 0.003§ȣɛ

(166.86)

Cyt b5 R (μmole of NADH oxidized/min/mg protein)

2.030 ± 0.205

(100)

2.521 ± 0.197

(124.13)

3.001 ± 0.012#

(147.81)

3.015 ± 0.184#

(148.50)

3.510 ± 0.097§€

(172.87)

3.508 ± 0.006§

(172.75)

GST (μmole of CDNB-GSH conjugate formed/min/mg protein)

1.246 ± 0.02

(100)

1.742 ± 0.021

(139.80)

2.399 ± 0.176#

(192.52)

2.641 ± 0.257§

(211.96)

2.809 ± 0.167§€

(225.43)

3.215 ± 0.150§¥

(257.82)

DTD (μmole of DCPIP reduced/min/mg protein)

0.035 ± 0.002

(100)

0.043 ± 0.002

(121.36)

0.063 ± 0.003§

(179.48)

0.083 ± 0.002§

(236.46)

0.084 ± 0.001§£

(241.88)

0.092 ± 0.002§ȣɛ

(264.38)

  1. Gallic acid and acetylsalicylic acid were given alone and in combinations through oral gavage for two weeks at desired doses (milligrams of per kilogram of body weight) as mentioned in the table. Abbreviations: Cyt P450 R cytochrome P450 reductase, Cyt b5 R cytochrome b5 reductase, GST glutathione S-transferase, DTD DT-diaphorase. Values are expressed as mean ± SEM of 5–6 animals. Values in parentheses are presented as percent of control. #(p < 0.01) and §(p < 0.001) represent significant changes relative to control. €(p < 0.01) and £(p < 0.001) represent significant changes relative to 25 mg/kg body weight of acetylsalicylic acid. ¥(p < 0.05) and ȣ(p < 0.001) represent significant changes relative to 50 mg/kg body weight of acetylsalicylic acid. ɛ(p < 0.05) represents significant changes relative to 100 mg/kg body weight of gallic acid