Beneficial effects of magnolol in a rodent model of endotoxin shock.
Magnolol is a compound extracted from the Chinese medicinal herb Magnolia officinalis. It has multiple pharmacological effects, notably as an anti-oxidant. The aim of this study was to evaluate the effects of magnolol on sepsis induced by intravenous (i.v.) administration of lipopolysaccharide (LPS; 10 mg/kg) in anaesthetized Wistar rats. Magnolol (4 microg/kg, i.v.) was administered at 30 min after LPS injection. Post-treatment with magnolol significantly attenuated the deleterious haemodynamic changes (e.g., hypotension and bradycardia) caused by LPS. Meanwhile, magnolol significantly inhibited the elevation of plasma levels of tumor necrosis factor alpha, glutamate-oxaloacetate transaminase, glutamate-pyruvate transaminase and blood urine nitrogen caused by LPS. The induction of inducible nitrous oxide (NO) synthase and the overproduction of NO and superoxide anions by LPS were also significantly reduced by post-treatment with magnolol. Moreover, the plasma level of the thrombin-antithrombin complex following administration of LPS was also reduced by post-treatment with magnolol. Thus, the beneficial effects of magnolol on LPS-induced sepsis result from its anti-inflammatory, anti-coagulatory, and anti-oxidant effects.
Center for Reproductive Medicine, Chi-Mei Foundation Hospital, Tainan, Taiwan.
Yung-Chieh
YC
Tsai
Pao-Yun
PY
Cheng
Ching-Wen
CW
Kung
Yi-Jen
YJ
Peng
Tzu-Hsuan
TH
Ke
Jhi-Joung
JJ
Wang
Mao-Hsiung
MH
Yen
D000818:Animals; D000990:Antithrombin III; D001713:Biphenyl Compounds / Q000494:pharmacology* / Q000627:therapeutic use; D001794:Blood Pressure / Q000187:drug effects; D004195:Disease Models, Animal; D015971:Gene Expression Regulation, Enzymologic / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D007668:Kidney / Q000187:drug effects / Q000503:physiopathology; D017705:Lignans / Q000494:pharmacology* / Q000627:therapeutic use; D008070:Lipopolysaccharides / Q000494:pharmacology; D008099:Liver / Q000187:drug effects / Q000503:physiopathology; D008168:Lung / Q000187:drug effects / Q000378:metabolism; D008297:Male; D009566:Nitrates / Q000097:blood; D052247:Nitric Oxide Synthase Type II / Q000378:metabolism; D009573:Nitrites / Q000097:blood; D010447:Peptide Hydrolases / Q000097:blood; D051381:Rats; D017208:Rats, Wistar; D012772:Shock, Septic / Q000139:chemically induced / Q000188:drug therapy* / Q000378:metabolism / Q000503:physiopathology; D013481:Superoxides / Q000378:metabolism; D015996:Survival Rate; D014409:Tumor Necrosis Factor-alpha / Q000097:blood
D001713:Biphenyl Compounds; D017705:Lignans; D008070:Lipopolysaccharides; D009566:Nitrates; D009573:Nitrites; D014409:Tumor Necrosis Factor-alpha; C046193:antithrombin III-protease complex; C005498:magnolol; D013481:Superoxides; D000990:Antithrombin III; D052247:Nitric Oxide Synthase Type II; D010447:Peptide Hydrolases