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Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 J+Enzyme+Inhib+Med+Chem 2009 ; 24 (3): 663-8 Nephropedia Template TP
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Superoxide radicals scavenging and xanthine oxidase inhibitory activity of magnesium lithospermate B from Salvia miltiorrhiza #MMPMID18686136
Liu X; Chen R; Shang Y; Jiao B; Huang C
J Enzyme Inhib Med Chem 2009[Jun]; 24 (3): 663-8 PMID18686136show ga
In this study we investigated the superoxide radicals scavenging effect and xanthine oxidase inhibitory activity by magnesium lithospermate B, which was originally isolated from the roots of Salvia miltiorrhiza (also named Danshen or Dansham), an important herb in Oriental medicine. Superoxide radicals were generated both in beta-NADH/PMS system and xanthine/ xanthine oxidase system. Magnesium lithospermate B significantly inhibited the reduction of NBT induced by superoxide radicals with an IC(50) of 29.8 microg/mL and 4.06 microg/mL respectively in the two systems. Further study suggested that magnesium lithospermate B can directly inhibit xanthine oxidase and exhibits competitive inhibition. Magnesium lithospermate B was also found to have the hypouricemic activity in vivo against potassium oxonate-induced hyperuricaemia in mice. After oral administration of magnesium lithospermate B at doses of 10, 20 and 30 mg/kg, there was a significant decrease in the serum urate level when compared to the hyperuricemia control. In addition, magnesium lithospermate B significantly protected HL-60 cells from superoxide radicals-induced apoptosis in the xanthine/ xanthine oxidase reactions. This study provided evidence that magnesium lithospermate B exhibits direct superoxide radicals scavenging and xanthine oxidase inhibitory activity.
|Administration, Oral[MESH]
|Animals[MESH]
|Apoptosis/drug effects[MESH]
|Dose-Response Relationship, Drug[MESH]
|Drugs, Chinese Herbal/administration & dosage/*pharmacology/therapeutic use[MESH]
J+Enzyme+Inhib+Med+Chem 2009 ; 24 (3): 663-8
