these studies show that kcl can stimulate npy release from the mbh in vitro , like that of lhrh , the kcl-induced npy response is significantly smaller from the mbh of castrated than intact males , castration can significantly reduce the levels of npy in the median eminence , arcuate nucleus , and ventromedial nucleus , thereby suggesting that testicular secretions may modulate npy levels and release from the mbh , and because pge2 stimulated the release of lhrh but not of npy , separate regulatory neural events may underlie the secretion of these two neuropeptides .
C0027893
npy
C0027895
neuropeptides