Unilateral ibotenic acid lesions of the prefrontal cortex reduce rotational behavior in 6-hydroxydopamine-lesioned rats.
Rats with 6-hydroxydopamine (6-OHDA)-induced lesions of the substantia nigra are used as a model of Parkinson.s disease (PD), and these "lesioned" rats exhibit a rotational behavior when further injected with apomorphine (APO). We examined whether lesions in the prefrontal cortex (PFC) could modify the rotational behavior in PD model rats. Rats initially received unilateral lesions of the substantia nigra by 6-OHDA injection, and then their rotational behavior was measured. Two PFC lesions were achieved by intracerebral infusions of ibotenic acid, followed by measurement of APO-induced rotation. Rotation was reduced by approximately 30% after PFC injury. The PFC may have functional influence on the basal ganglia and may be involved in the pathophysiology of the rotational behavior of PD model rats.
Gonzalez
Daniel
D
Department of Internal Medicine, Faculty of Medicine, Kagawa University, Miki-cho, Kagawa 761-0793, Japan.
Miyamoto
Osamu
O
Touge
Tetsuo
T
Sumitani
Kazunori
K
Kuriyama
Shigeki
S
Itano
Toshifumi
T
D018663:Adrenergic Agents / Q000494:pharmacology; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D004195:Disease Models, Animal; D018690:Excitatory Amino Acid Agonists / Q000494:pharmacology*; D007051:Ibotenic Acid / Q000494:pharmacology*; D008297:Male; D016627:Oxidopamine / Q000494:pharmacology; D010300:Parkinson Disease / Q000188:drug therapy*; D017397:Prefrontal Cortex / Q000187:drug effects*; D051381:Rats; D017207:Rats, Sprague-Dawley
D018663:Adrenergic Agents; D018690:Excitatory Amino Acid Agonists; D007051:Ibotenic Acid; D016627:Oxidopamine