Table 1. Neuronal Density Evaluated 7 Days after Reperfusion in Four Groups of Animals

Neuronal density represents the number of neuro–specific nuclear protein–positive cells per millimeter length of CA1 pyramidal cell layer. The duration of conditioning ischemia was 3 min. Values are mean ± standard deviation. Data were analyzed by using one-way analysis of variance followed by Tukey post hoc  test for multiple comparisons.

*P < 0.001, compared with either the SO or the CI group.

†P < 0.001, compared with 8-min ischemia with SO group.