Plasma Corticosterone Responses to Electrical Stimulation of the Amygdaloid Complex: Cytoarchitectural SpecificityDunn J.D. · Whitener J.
Department of Anatomy, Oral Roberts University, Tulsa, Okla., USA
To pursue the possibility that subdivisions within the amygdaloid complex are differentially involved in adrenocortical function, plasma samples obtained prior to and following electrical stimulation of the amygdala of urethane (1.30 g/kg) anesthetized female rats were assessed for corticosterone concentration. Hippocampal EEG, ECG, heart rate, mean arterial pressure, and respiration routinely were monitored, and timed blood samples (0.2 ml) were obtained from a catheterized artery. Blood samples were taken 0.5 min prior to and at 5, 10, 15, and 30 min after initiation of stimulation. Whereas stimulation of the central and lateral nuclei produced a decrease (p < 0.05) in plasma corticosterone, stimulation of the basomedial, medial and posterior corticomedial nuclei resulted in increased plasma corticosterone levels (p < 0.05). In contrast, no change in corticosterone levels were observed following sham stimulation or stimulation of several nonamygdaloid sites. Collectively, these data support the hypothesis that subdivisions within the amygdaloid complex are differentially involved in adrenocortical function.
|Direct payment||This item at the regular price: USD 38.00|
|Payment from account||With a Karger Pay-per-View account (down payment USD 150)
you profit from a special rate for this and other single items.
This item at the discounted price: USD 26.50