Abstract
High affinity binding sites for brain natriuretic peptide were characterized in the rat superior cervical ganglia by quantitative autoradiography. In addition, the peptide increased the formation of cyclic GMP in the ganglia in vitro. Brain natriuretic peptide displaced atrial natriuretic peptide from its binding sites. Our results suggest that brain natriuretic peptide and atrial natriuretic peptide may share physiologically active receptors in sympathetic ganglia. Brain natriuretic peptide may modulate the synaptic transmission in sympathetic ganglia, in addition or in conjunction with atrial natriuretic peptide.
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