Neuronal death and activation of microglia and astrocytes after
CA/CPR. (a–d) Representative photomicrographs of
immunohistochemistry for NeuN, MAP2, Iba-1, and GFAP in the
hippocampal CA1 region of the sham group and the experimental groups
at seventh day after ROSC. All images were captured at × 400
magnification. Scale bar indicates 100 μm, n = 5 for sham group, and
n = 20 for experimental groups. (e–h) Semi-quantitative results of
NeuN, MAP2, Iba-1, and GFAP, respectively. NeuN staining cells are
reported as positive number, while MAP2, Iba-1, and GFAP staining as
the relative intensity of staining (percent) of the area. Data are
presented as mean ± SD. Sham: sham group; CA: cardiac arrest group;
HAase: hyaluronidase group; HC: hydrocortisone group; CPR:
cardiopulmonary resuscitation; NeuN: neuronal nuclei; MAP2:
microtubule-associated protein 2; Iba-1: ionized calcium-binding
adapter molecule 1; GFAP: glial fibrillaryacidic protein; ROSC:
return of spontaneous circulation; SD: standard deviation.
*p < 0.05 vs. sham group. #p < 0.05 vs. CA
group. + p < 0.05 vs. HC group.