. Author manuscript; available in PMC: 2010 Sep 1.

Published in final edited form as: Med Res Rev. 2009 Sep;29(5):683–741. doi: 10.1002/med.20151

Table II.

Concentration of various nitrogen oxide species in plasma from the blood circulation of resting adults on a normal diet (adapted from ref (45)). HMW-SNO and LMW-SNO are S-nitrosothiols of high and low molecular weight, respectively. SNO-Hb is S-nitrosated hemoglobin. Lower values of plasma nitrite were reported in (44), with arterial plasma nitrite of 176 ± 10 nM, and venous plasma nitrite of 143 ± 7 nM.

species	Artery	Vein
Plasma nitrate (μM)	40.7 ± 4.5	41.3 ± 4.5
Plasma nitrite (nM)	540 ± 74	466 ± 79
Plasma LMW-SNO	bd	bd
Plasma HMW-SNO (nM)	45 ± 15	63 ± 13
SNO-Hb ^¶ (nM)	161 ± 42	142 ± 29

bd: below detection limit of ca 25 nM

^¶

concentration of SNO-Hb in the red cell fraction.