Research Article

Biphasic Modulation of NOS Expression, Protein and Nitrite Products by Hydroxocobalamin Underlies Its Protective Effect in Endotoxemic Shock: Downstream Regulation of COX-2, IL-1 , TNF- , IL-6, and HMGB1 Expression

Table 1

Protocol for cobalamin treatment of LPS-induced endotoxaemia.

Experimental protocolsInflammatory stimulus Treatment
Cbl doseTime of Cbl treatment

4 h non-lethal LPS (0.1 mg/kg) 0.2 mg/kg −1 h, +1 h, +2 h
24 h non-lethal LPS (0.1 mg/kg) 0.2 mg/kg −1, +1, +2, +6, +22 h
Lethal series ILPS (0.1 mg/kg)0.2 mg/kg −1, +1, +2, +6, +22 h
+ D-Gal (1 g/kg) 40 mg/kg+2, +22 h
Lethal series IILPS (0.1 mg/kg)40 mg/kg HOCbl +2, +4 h
+ D-Gal (1 g/kg)80 mg/kg HOCbl +2 h