Nitric oxide is a reactive free radical which acts as a biologic mediator in several processes, including neurotransmission, antimicrobial and antitumoral activities. Nitric oxide is synthesized from L-arginine by nitric oxide synthases. Variations in this gene are associated with susceptibility to coronary spasm.
The T allele affects the proteolytic cleavage of the enzyme, thereby reducing nitric oxide bioavailability in the blood vessel wall. As a result, it is associated with atherosclerosis, essential hypertension, end-stage renal disease, and preeclampsia.
Increase the intake of omega 3 fatty acids and dietary antioxidant sources. Increase intake of foods such as spinach and beetroot that contain nitrates and are converted naturally in the body to nitric oxide. Avoid all forms of smoke and engage in regular, moderate-intensity, physical activity. Arginine, citrulline, iron, omega 3, vitamin B2, C, and E are all considered important nutrient co-factors to this pathway.