PGC-1alpha is an inducible transcriptional co-activator whose muscle expression is massively increased by endurance exercise, cold exposure (in BAT), and prolonged fasting (in liver) three physiological contexts characterized by increased oxidative energy demand
Human and preclinical studies of the hostgut microbiome co-metabolite hippurate as a marker and mediator of metabolic health
Liu, Z., Vincken, J., & De Bruijn, W
Methods HF was induced in rats by coronary artery ligation
During shortages of Wegovy, Ozempic, Mounjaro, and Zepbound, the FDA exercised temporary enforcement discretion , allowing compounding pharmacies to help meet patient demand. Once manufacturing stabilized: Semaglutide injection products were removed from the FDA Drug Shortage List Tirzepatide injection products were formally declared resolved Compounding reverted to pre-shortage federal and state limits Broad, shortage-based compounding is no longer allowed in 2026