Postprandial endothelial dysfunction (PED)

Postprandial endothelial dysfunction (PED) refers to the acute and transient impairment of the vascular endothelium's ability to undergo vasodilation following food intake, particularly meals high in refined carbohydrates or saturated fats [1][2]. This phenomenon is primarily driven by postprandial hyperglycemia and hypertriglyceridemia, which induce the production of reactive oxygen species (ROS) that reduce the bioavailability of nitric oxide (NO) [2][4]. The resulting oxidative stress triggers inflammatory signaling pathways, such as NF-kappaB activation, which can lead to permanent vascular damage and the progression of atherosclerosis over time [2][3]. Attenuation of this impairment is a key therapeutic goal in managing cardiovascular risk in patients with type 2 diabetes and metabolic syndrome [1][5]. Pharmacological strategies to attenuate PED focus on reducing post-meal metabolic excursions using agents such as GLP-1 receptor agonists, DPP-4 inhibitors, or alpha-glucosidase inhibitors, which help maintain endothelial homeostasis and protect against oxidative injury [1][3].

Other names

Attenuation of postprandial endothelial impairmentPostprandial endothelial impairmentPost-meal vascular dysfunctionMeal-induced endothelial dysfunction

Attenuation is achieved by reducing postprandial glucose and lipid spikes, thereby limiting the generation of reactive oxygen species and preserving the bioavailability of nitric oxide for endothelial-dependent vasodilation [1][3][4].