Aim: To explore the types of receptors distributed in MHb and LHb.
Methods: Recording the currents of potassium channels in Hb neurons isolated from the rats 10-15 days after birth. To distinguish the types of receptors distributed in MHb and LHb by using the agonists of mu receptor DAMGO, and sigma receptor DPDPE.
Results: Two types of current of K+ channels were recorded, the transient rectifier and delayed rectifier potassium channels. DAMGO or DPDPE increased the intensity of current of K+ channels.
Conclusion: In MHb there was a higher density of sigma receptor, and in LHb a higher density of mu receptor distributed.