Correlation between calbindin expression in granule cells of the resected hippocampal dentate gyrus and verbal memory in temporal lobe epilepsy.
Calbindin expression of granule cells of the dentate gyrus is decreased in temporal lobe epilepsy (TLE) regardless of its etiology. In this study, we examined the relation between reduction of calbindin immunoreactivity and the verbal and visuo-spatial memory function of patients with TLE of different etiologies. Significant linear correlation was shown between calbindin expression and short-term and long-term percent retention and retroactive interference in auditory verbal learning test (AVLT) of patients including those with hippocampal sclerosis. In addition, we found significant linear regression between calbindin expression and short-term and long-term percent retention of AVLT in patients whose epilepsy was caused by malformation of cortical development or tumor and when no hippocampal sclerosis and substantial neuronal loss were detected. Together with the role of calbindin in memory established in previous studies on calbindin knock-out mice, our results suggest that reduction of calbindin expression may contribute to memory impairments of patients with TLE, particularly, when neuronal loss is not significant.
Department of Behavioral Sciences, Faculty of Medicine, University of Pécs, Szigeti u. 12., Pécs 7624, Hungary.
Kázmér
K
Karádi
József
J
Janszky
Csilla
C
Gyimesi
Zsolt
Z
Horváth
Tivadar
T
Lucza
Tamás
T
Dóczi
János
J
Kállai
Hajnalka
H
Abrahám
D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D064026:Calbindins; D018891:Dentate Gyrus / Q000378:metabolism / Q000473:pathology*; D004833:Epilepsy, Temporal Lobe / Q000150:complications / Q000378:metabolism / Q000473:pathology; D005260:Female; D005786:Gene Expression Regulation; D006801:Humans; D008297:Male; D008569:Memory Disorders / Q000209:etiology*; D008875:Middle Aged; D009474:Neurons / Q000378:metabolism*; D009483:Neuropsychological Tests; D010751:Phosphopyruvate Hydratase / Q000378:metabolism; D012044:Regression Analysis; D064030:S100 Calcium Binding Protein G / Q000378:metabolism*; D016708:Synaptophysin / Q000378:metabolism; D014706:Verbal Learning / Q000502:physiology*; D055815:Young Adult
D064026:Calbindins; D064030:S100 Calcium Binding Protein G; D016708:Synaptophysin; D010751:Phosphopyruvate Hydratase