Common Injuries and Repair Mechanisms in the Endothelial Lining

Abstract

Objective:Endothelial cells (ECs) are important metabolic and endocrinal organs which play a significant role in regulating vascular function. Vascular ECs, located between the blood and vascular tissues, can not only complete the metabolism of blood and interstitial fluid but also synthesize and secrete a variety of biologically active substances to maintain vascular tension and keep a normal flow of blood and long-term patency. Therefore, this article presents a systematic review of common injuries and healing mechanisms for the vascular endothelium.Data Sources:An extensive search in the PubMed database was undertaken, focusing on research published after 2003 with keywords including endothelium, vascular, wounds and injuries, and wound healing.Study Selection:Several types of articles, including original studies and literature reviews, were identified and reviewed to summarize common injury and repair processes of the endothelial lining.Results:Endothelial injury is closely related to the development of multiple cardiovascular and cerebrovascular diseases. However, the mechanism of vascular endothelial injury is not fully understood. Numerous studies have shown that the mechanisms of EC injury mainly involve inflammatory reactions, physical stimulation, chemical poisons, concurrency of related diseases, and molecular changes. Endothelial progenitor cells play an important role during the process of endothelial repair after such injuries. What's more, a variety of restorative cells, changes in cytokines and molecules, chemical drugs, certain RNAs, regulation of blood pressure, and physical fitness training protect the endothelial lining by reducing the inducing factors, inhibiting inflammation and oxidative stress reactions, and delaying endothelial caducity.Conclusions:ECs are always in the process of being damaged. Several therapeutic targets and drugs were seeked to protect the endothelium and promote repair.

Cowpea (Vigna unguiculata) Extract Reduce Malondialdehyde Levels and Prevent Aortic Endothelial Cell Decline in Ovariectomized Rats

“…This may be due to increased oxidative stress, decreased endothelial cell replacement, and increased sensitivity of endothelial cells to apoptosis (Ross, 2018;Jinsong Wang et al, 2011). Endothelial cell loss or dysfunction can cause vascular damage so that both endogenous and extrinsic coagulation pathways are activated, and vascular stenosis or occlusion occurs (Meng et al, 2018).…”

“…Endothelial cell loss or dysfunction can cause vascular damage so that both endogenous and extrinsic coagulation pathways are activated, and vascular stenosis or occlusion occurs (Meng et al, 2018). Endothelial damage and activation can lead to increased adhesion molecules and Endothelial Microvesicle (EMV) release, thereby triggering the recruitment of Endothelial Progenitor Cells (EPCs) for endothelial cell repair (Edwards et al, 2018).…”

Research progress in endothelial cell injury and repair

“…Thus, endothelial cells are always in the dynamic process of being damaged and resisting damage, i.e., being repaired ( Mazini et al, 2020 ). Considering the important role of vascular endothelium in the occurrence and development of dilemmas, the idea of interventions (drugs and biologics) to prevent and treat diseases is to facilitate the protection of endothelium and promote its repair ( Miyamoto et al, 2014 ; Meng et al, 2018 ).…”

SIRT1-induced deacetylation of Akt expedites platelet phagocytosis and delays HEMEC aging

“…Endothelium is a key inducer for vascular proliferation, 1 which is critical in the repair of blood vessels after injury. 2 Therefore, maintenance of endothelium health is of critical importance in several disorders such as hypertension, diabetes, and aging. 3,4 Endothelial cells, adjustable to their environment, are of great significance to vascular homeostasis.…”