Effects of 17β-estradiol on galanin(1-29)- and galanin(1-16)-like immunoreactivities

► Galanin(1-16)-LI was affected by 17β-estradiol in brain and/or gut of rats. ► The pattern of galanin(1-16)-LI changes differed from that of galanin(1-29). ► Galanin(1-16)-LI could be a new member of the galanin neuropeptide family.