The effective systemic dose of Bumetanide on neonatal seizures in rats is 0.1–0.5 mg/kg (21 (link), 25 (link)). We administered 0.2 mg/kg of Bumetanide twice a day in repeated doses as previously described (26 (link)). Bumetanide (B3023; Sigma-Aldrich) was dissolved in 100% ethyl alcohol and then diluted with 0.9% saline to a final concentration of 0.05 mg/mL. Bumetanide solution (0.2 mg/kg) or equal volumes of 0.9% saline (4 mL/kg) was injected twice daily from P12 to P20 or P26. MEMRI was performed on P21 or P27 for each rat.
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