Differential fos expression following aspiration, electrolytic, or excitotoxic lesions of the perirhinal cortex in rats.
The authors explored the possibility that there are different neural consequences, beyond the primary site of brain damage, following perirhinal cortex (PRh) lesions made in different ways. Fos expression was used as a marker for neuronal activation and compared across the forebrains of rats that underwent the different types of surgery. Electrolytic and excitotoxic PRh lesions produced dramatic increases in Fos expression in the cortex, and excitotoxic and aspiration PRh lesions increased Fos expression in the dentate gyrus. These data are consistent with the hypothesis that different lesion methods have separable effects on neural function in regions outside the lesion site that could account for inconsistencies in the literature regarding the behavioral effects of PRh lesions on tests of spatial memory.
Center for Studies in Behavioral Neurobiology, Department of Psychology, Concordia University, Montreal, Quebec, Canada. melissa@psych.duke.edu
Melissa J
MJ
Glenn
Hugo
H
Lehmann
Dave G
DG
Mumby
Barbara
B
Woodside
D000704:Analysis of Variance; D000818:Animals; D001522:Behavior, Animal; D002452:Cell Count / Q000379:methods; D004572:Electrolysis / Q000379:methods; D018728:Entorhinal Cortex / Q000293:injuries / Q000378:metabolism / Q000473:pathology*; D005786:Gene Expression Regulation / Q000187:drug effects / Q000502:physiology*; D007150:Immunohistochemistry / Q000379:methods; D008297:Male; D016202:N-Methylaspartate / Q000633:toxicity; D009498:Neurotoxins / Q000633:toxicity*; D016761:Oncogene Proteins v-fos / Q000378:metabolism*; D051381:Rats; D013396:Suction / Q000379:methods; D013997:Time Factors
D009498:Neurotoxins; D016761:Oncogene Proteins v-fos; D016202:N-Methylaspartate