PMID- 26702404 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 2305-6304 (Print) IS - 2305-6304 (Electronic) IS - 2305-6304 (Linking) VI - 3 IP - 4 DP - 2015 TI - Oxyradical Stress, Endocannabinoids, and Atherosclerosis. PG - 481-498 AB - Atherosclerosis is responsible for most cardiovascular disease (CVD) and is caused by several factors including hypertension, hypercholesterolemia, and chronic inflammation. Oxidants and electrophiles have roles in the pathophysiology of atherosclerosis and the concentrations of these reactive molecules are an important factor in disease initiation and progression. Overactive NADPH oxidase (Nox) produces excess superoxide resulting in oxidized macromolecules, which is an important factor in atherogenesis. Although superoxide and reactive oxygen species (ROS) have obvious toxic properties, they also have fundamental roles in signaling pathways that enable cells to adapt to stress. In addition to inflammation and ROS, the endocannabinoid system (eCB) is also important in atherogenesis. Linkages have been postulated between the eCB system, Nox, oxidative stress, and atherosclerosis. For instance, CB(2) receptor-evoked signaling has been shown to upregulate anti-inflammatory and anti-oxidative pathways, whereas CB(1) signaling appears to induce opposite effects. The second messenger lipid molecule diacylglycerol is implicated in the regulation of Nox activity and diacylglycerol lipase beta (DAGLbeta) is a key biosynthetic enzyme in the biosynthesis eCB ligand 2-arachidonylglycerol (2-AG). Furthermore, Nrf2 is a vital transcription factor that protects against the cytotoxic effects of both oxidant and electrophile stress. This review will highlight the role of reactive oxygen species (ROS) in intracellular signaling and the impact of deregulated ROS-mediated signaling in atherogenesis. In addition, there is also emerging knowledge that the eCB system has an important role in atherogenesis. We will attempt to integrate oxidative stress and the eCB system into a conceptual framework that provides insights into this pathology. FAU - Matthews, Anberitha T AU - Matthews AT AD - Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, P.O. Box 6100, Mississippi State, MS 39762, USA. FAU - Ross, Matthew K AU - Ross MK AD - Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, P.O. Box 6100, Mississippi State, MS 39762, USA. LA - eng GR - F31 HL122082/HL/NHLBI NIH HHS/United States GR - R15 ES015348/ES/NIEHS NIH HHS/United States PT - Journal Article DEP - 20151203 PL - Switzerland TA - Toxics JT - Toxics JID - 101639637 PMC - PMC4686160 MID - NIHMS742498 OTO - NOTNLM OT - 2-arachidonoylglycerol OT - NADPH oxidase OT - anandamide OT - atherogenesis OT - cardiovascular disease OT - reactive oxygen species COIS- The authors declare no conflict of interest. EDAT- 2015/12/25 06:00 MHDA- 2015/12/25 06:01 PMCR- 2015/12/03 CRDT- 2015/12/25 06:00 PHST- 2015/12/25 06:00 [entrez] PHST- 2015/12/25 06:00 [pubmed] PHST- 2015/12/25 06:01 [medline] PHST- 2015/12/03 00:00 [pmc-release] AID - toxics-03-00481 [pii] AID - 10.3390/toxics3040481 [doi] PST - ppublish SO - Toxics. 2015;3(4):481-498. doi: 10.3390/toxics3040481. Epub 2015 Dec 3.