Semaglutide's Effect on Renal Hemodynamics and Function in Patients With Type 2 Diabetes Mellitus and Nephropathy

The goal of this double-blinded, placebo-controlled, randomized, crossover study is to examine the effect of semaglutide, a glucagon-like peptide-1 receptor agonist (GLP-1RA), on renal hemodynamics and function in patients with type 2 diabetes mellitus (T2DM) and moderate chronic kidney disease (CKD). The study will determine the effects of semaglutide on: * Renal arterial blood flow, regional renal perfusion, and oxygenation * Activity of the renin-angiotensin-aldosterone system (RAAS) * The glomerular filtration rate (GFR) * Sodium excretion in urine * Blood pressure and heart rate