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PubMed1982

Dopamine receptors in the striatum and limbic system of various strains of mice: relation to differences in responses to apomorphine.

Dopamine receptors, defined as [3H]spiroperidol binding sites, had similar population parameters in the limbic forebrain of C57BL/6, Albino Swiss and DBA/2 mice, but the parameters of the striatal populations were different: not only the densities differed among themselves, but the KD value of the striatal dopamine receptors of DBA/2 mice was significantly higher than that in the two remaining strains. Behavioral responses of Albino Swiss mice to apomorphine: biphasic effect of apomorphine on locomotor activity and stereotypy characterized by high motility, frequent rearing and sharp, not very frequent bites, were similar to those described earlier for C57BL/6 mice, and differed from those reported for DBA/2 mice. The results suggest that the difference in responding to apomorphine in various strains of mice may be related to differences in their striatal dopamine receptors.

Animals↗
PubMed1998

Visualization of specific angiotensin II binding sites in the rat limbic system.

The present study examined the distribution of angiotensin-binding cells by using a fluorescence-coupled angiotensin II in fixed horizontal sections that contained several limbic structures. In normal female rats, dense staining was found in the CA3 and CA1 regions and the dentate gyrus of the hippocampus--in the subiculum as well as in the entorhinal cortex and piriform cortex. Moderate staining was found in the CA2 region, in the central and medial nuclei of the amygdala. Low-level staining was obtained in the basolateral and lateral nucleus of the amygdala as well as in the bed nucleus of the stria terminalis. The co-incubation of fluorescence-coupled angiotensin II together with angiotensin II in excess and with saralasin, respectively, suppressed the angiotensin staining in structures investigated.

Amygdala↗