Results of thermogravimetric measurements of peptide ghrelin antagonist (GhA) and loaded into PSi microparticles. Results of thermogravimetric measurements of peptide ghrelin antagonist (GhA) and loaded into PSi microparticles. The results show near complete decomposition of GhA as such. The GhA-loaded PSi microparticles show a mass loss of 18.5%, which can also be assumed as the loading degree of the particles. Miia Kovalainen et al. Pharmacol Rev 2015;67:541-561 Copyright © 2015 by The American Society for Pharmacology and Experimental Therapeutics