MU OPIOID RECEPTOR;
VAGAL PREGANGLIONIC NEURON;
VAGOTOMY;
IN SITU HYBRIDIZATION;
RAT;
D O I:
10.1016/0169-328X(94)90149-X
中图分类号:
Q189 [神经科学];
学科分类号:
071006 ;
摘要:
By in situ hybridization with digoxigenin-labeled RNA probes, distinct expression of mu opioid receptor mRNA was found in rat medullary preganglionic neurons for vagal parasympathetic outflow. Two days or more following unilateral vagotomy, the expression was almost completely abolished on the operated side. The results, taken together with previous findings indicating proximodistal axonal transport of radioligand-labeled opioid receptors, suggest that the medullary preganglionic neurons thus identified are the source for mu opioid receptor acting in cardiorespiratory and gastrointestinal tissues.