Biochemical analysis in snPt1-treated mice. (A) Dose dependency of snPt1-induced kidney injury. snPt1 was administrated intravenously at 5, 10, 15, or 20 mg/kg. At 24 h after administration, blood was recovered, and serum was collected and used for measurement of BUN, as described in the ‘Methods’ section. Data are mean ± SEM (n = 6 to 10). Single asterisk (*) connotes a significant difference when compared with the vehicle-treated group (P < 0.05). (B) Time-dependent changes in a biological marker of kidney injury. snPt1 was administered intravenously to mice at 20 mg/kg. Blood was recovered at 0, 3, 6, 12, 24, and 48 h after administration. Serum was collected and used for measurement of BUN, as described in the ‘Methods’ section. Data are mean ± SEM (n = 8 to 10). Single asterisk (*) connotes significant difference when compared with the vehicle-treated group (P < 0.05).