- Role of endogenous PACAP in catecholamine secretion from the rat adrenal gland. Fukushima, Y., Hikichi, H., Mizukami, K., Nagayama, T., Yoshida, M., Suzuki-Kusaba, M., Hisa, H., Kimura, T., Satoh, S. Am. J. Physiol. Regul. Integr. Comp. Physiol. (2001)