Coexpression of human growth hormone-releasing factor 1-37-like and alpha-melanotropin-like immunoreactivities in neurones of the rat lateral dorsal hypothalamus.

Antibodies recognizing the 29-37 sequence of the human somatocrinin specifically stain a large population of interneurones located in the lateral dorsal hypothalamus. Staining comparisons revealed that these perikarya also contain alpha-MSH-like immunoreactivity. The neurones exhibiting human GRF1-37-like immunoreactivity correspond to the system previously shown to present alpha-MSH-like and rat CRF-like immunoreactivities.