Its binding to VMAT2 is very strong, making it's effect appear irreversible, with trace amounts of the drug remaining bound to vesicular membranes for many days, and its clinical effects lasting many days to weeks, and may persist until new transporter proteins are synthesized (German et al, 2015
Acknowledgements We acknowledge support from National Institute on Alcohol Abuse and Alcoholism (AA029831), National Institute on Aging (AG057557, AG061388, AG062272, AG07664), from National Cancer Institute Case Comprehensive Cancer Center (CA221718, CA043703, CA2332216)
Patients who completed adequate semaglutide titration, achieved partial but insufficient weight loss, and are looking for the next pharmacologic step benefit directly from tirzepatide's added GIP receptor mechanism
In taste buds, GLP-1 is locally produced from proglucagon through the cleavage by prohormone convertase PC1/3, which is co-expressed with GLP-1 in all taste cells positive for this peptide