In the context of cerebral ischemia, astrocytes are especially important in regulation and maintenance of glutamate during acute injury, which causes excitotoxicity and perturbates calcium influx resulting in cell death ( Per2, Clock , and NPAS2 display significant reductions in glutamate uptake, mRNA expression of Glast, an astrocyte-specific glutamate transporter, and protein expression (Sofroniew, 2015)
In pancreatic cells, activation of these G proteincoupled receptors primarily signals through pathways involving cyclic adenosine monophosphate (cAMP), protein kinase A ( PKA ), and cAMP response elementbinding protein ( CREB ), thereby enhancing glucose-dependent insulin secretion and supporting -cell function
Tirzepatide works by stimulating the GLP-1 and GIP receptors in the body, leading to several effects such as: Appetite regulation , which helps reduce hunger and food intake
Department of Health and Human Services, 2025, www.nia.nih.gov/health/menopause/what-menopause.
