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Seizures with pentylenetetrazol kindling cause a decrease in the number of pyramidal neurons in the rat hippocampus
(Science Printers and Publishers Inc., 2016) Kocacan, Süleyman Emre; Sefil, Fatih; Elibol, Ebru; Altunkaynak, Berrin Z.; Acar, Meryem Dilek; Bağirici, Faruk; Marangoz, Cafer
OBJECTIVE: To investigate the effects of pentylenetetrazole (PTZ) kindling on the number of pyramidal neurons in the rat hippocampus. STUDY DESIGN: Using unbiased stereology, we calculated total pyramidal neuron numbers in the CA1, CA2, and CA3 areas and the whole hippocampus after PTZ-induced kindling. The estimation and the analysis of the number of hippocampal pyramidal cells (areas of CA1-3) were done with the optical fractionator technique, which is a stereological counting technique. RESULTS: Stereological analysis showed that the total number of pyramidal neurons in the whole hippocampus and the number of pyramidal neurons in CA1 were significantly lower in kindled rats as compared to the controls (p < 0.05). However, no significant difference was found in the neuron numbers of CA2 and CA3 (p>0.05). CONCLUSION: PTZ-induced seizures cause a decrease in the amount of pyramidal neurons in the CA area of the rat hippocampus. © Science Printers and Publishers, Inc.