The attenuation effect of 3,4-dihydroxy-phenyl lactic acid and salvianolic acid B on venular thrombosis induced in rat mesentery by photochemical reaction.
3,4-dihydroxy-phenyl lactic acid (DLA) and salvianolic acid B (SAB) are two major water-soluble components of Salvia miltiorrhiza (SM). Previous works have revealed the ability of DLA and SAB to scavenge oxygen free radicals, inhibiting the expression of adhesion molecules CD11b/CD18 in neutrophil. Cardiotonic pills (CP), which is a traditional Chinese medicine compound preparation containing DLA and SAB, was found to inhibit venular thrombosis induced by photochemical reaction (PR) in rat mesentery. The present study addressed the effect of DLA and SAB on PR-induced thrombosis in rat mesentery by utilizing a microcirculation dynamic viewing system. The result demonstrated that both DLA and SAB delayed thrombus-initiation time, while DLA also prolonged thrombus half-size time. The experiments explored the mechanism underlying that the dihydrorhodamine 123 (DHR) fluorescence in the mesenteric venular walls after PR challenge was diminished by pretreatment with either DLA or SAB, the expression of CD18 in neutrophils elicited by PR was depressed by administration of DLA, while mast cell degranulation in rat mesentery induced by PR was damped by SAB. The antioxidant potential of the two substances is likely to be responsible for their most beneficial effects on thrombosis, through either directly scavenging the peroxides produced and/or indirectly depressing the expression of adhesion molecules in neutrophil.
Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China.
Fang
F
Wang
Yu-Ying
YY
Liu
Lian-Yi
LY
Liu
Qing-Jiang
QJ
Zeng
Chuan-She
CS
Wang
Kai
K
Sun
Ji-Ying
JY
Yang
Jun
J
Guo
Jing-Yu
JY
Fan
Jing-Yan
JY
Han
D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D001572:Benzofurans / Q000494:pharmacology*; D018821:CD18 Antigens / Q000187:drug effects / Q000378:metabolism; D001892:Camphanes; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D006414:Hematoporphyrin Photoradiation / Q000009:adverse effects; D007773:Lactates / Q000494:pharmacology*; D008297:Male; D008407:Mast Cells / Q000187:drug effects; D008641:Mesenteric Vascular Occlusion / Q000517:prevention & control; D008642:Mesenteric Veins; D009504:Neutrophils / Q000187:drug effects; D053723:Panax notoginseng; D051381:Rats; D027561:Salvia miltiorrhiza; D020246:Venous Thrombosis / Q000517:prevention & control*; D053630:Depsides
D000975:Antioxidants; D001572:Benzofurans; D018821:CD18 Antigens; D001892:Camphanes; D004365:Drugs, Chinese Herbal; D007773:Lactates; C000604051:danshen dripping pill; C035055:3,4-dihydroxyphenyllactic acid; C076944:salvianolic acid B; D053630:Depsides