Abstract:Carbon monoxide (CO) is endogenously produced from the degradation of heme, in a reaction that is catalyzed by heme oxygenase (HO). Systemic blockade of HO acutely decreases neural HO activity, and this increases arterial pressure in a manner that is reversed by CO microinjections into the nucleus tractus solitarii (NTS) of the brain stem; such findings are the original evidence that endogenous CO in the NTS serves as a tonic vasodepressor. Whilst the NTS coordinates the balance and distribution of sympathetic… Show more
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