The International Union of Physiological Sciences nominated, as consultants to the subcommittee, A. Brodish, S. M. McCann, and F. Ulrich. The present Recommendations are based on the report of this subcommittee. This is unfortunate, and it was therefore considered advisable to create suitable names for those peptide hormones not already having well established short trivial names. Abbreviations of the new names are not proposed, and the use of currently fashionable abbreviations is discouraged. It is recommended that pituitary hormones discovered in the future also be named with the ending -tropin, This suffix should be restricted to pituitary and similar hormones and should not be used for, e.g. crustacean hormones acting on pigment cells.
Some placental hormones are physiologically very similar to pituitary hormones.
It is, however, recommended that the suffixes defined above for hypothalamic and pituitary hormones not be used in a different sense in invertebrates. Current abbreviation b 1. Ocytocin j 3. For convenience, some biologically active peptides that may not fulfill all criteria of a hormone are included. This name indicates a hypothalamic substance releasing gonadotropin.