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Abstract Title:

Effects of intravenous infusion of highly purified vitamin B2 on lipopolysaccharide-induced shock and bacterial infection in mice.

Abstract Source:

Eur J Pharmacol. 2004 May 25;492(2-3):273-80. PMID: 15178375

Abstract Author(s):

Toshio Toyosawa, Mamoru Suzuki, Kohtarou Kodama, Seiichi Araki

Article Affiliation:

Tsukuba Research Laboratories, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.

Abstract:

We investigated the effect of an i.v. infusion of highly purified vitamin B(2) (riboflavin 5'-sodium phosphate: purity>97%) on lipopolysaccharide-induced shock and bacterial infection in mice. Six hours after lipopolysaccharide injection or 1 h after bacterial infection, vitamin B(2) or human activated protein C (APC) was administered by 6-h i.v. infusion. Vitamin B(2) at 10 mg/kg/6 h and up to 80 mg/kg/6 h significantly improved lipopolysaccharide-induced endotoxin shock. APC was also effective at low doses, but was deleterious at higher doses. Moreover, vitamin B(2) at 80 mg/kg/6 h significantly reduced the lethality of Escherichia coli and Staphylococcus aureus infection, whereas APC at up to 600 units/kg/6 h was ineffective. The i.v. infusion of vitamin B(2) reduced the elevations of proinflammatory cytokines and nitric oxide induced by lipopolysaccharide. These results suggest that i.v. infusion of vitamin B(2) represents a promising strategy for the treatment of sepsis and septic shock.

Study Type : Animal Study

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Sayer Ji
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