The receptor is in an inactive conformation with compounds that restrict movement of the intracellular tip of helix VI, a movement that is generally associated with activation mechanisms in class A GPCRs
30,31 Due to the degradation of peptide-based drugs by proteolytic enzymes, the low permeability of intestinal epithelium, and the low pH of the gastrointestinal tract, oral administration of semaglutide is challenging
One consideration is that both medications can influence appetite and nausea in opposite directionssertraline may stabilize mood-related eating patterns, while semaglutide suppresses hunger signals
To overcome this assessment, pharmaceutical companies are instead targeting obesity-related co-morbidities, such as cardiovascular disease, chronic kidney disease and obstructive sleep apnoea, for which reimbursement is more likely