Table 1.

Experimental Measurements of Perivascular NO Concentrations

Reference	NO concentration	Animal model	Arteriolar size	Method	Experimental condition
Tsai et al. (2006) (101)	200 nM	50- to 60-g male golden Syrian hamsters; retractor muscle	Diameter, 58 μm	Amperiometric biopolymercoated carbon fiber microelectrodes	In vivo; superfused with salt solution
Tsai et al. (2006) (100)	600 nM	55- to 60-g male golden Syrian hamsters; retractor muscle	Diameter, 50–60 μm	Amperiometric biopolymercoated carbon fiber microelectrodes	In vivo; control samples, high-viscosity plasma
	1,200 nM
Vukosavljevic et al. (2006) (108)	310–388 nM for small, medium, and larger arterioles	Male Sprague-Dawley 200- to 300-g rats; exteriorized mesentery and intestine	Measured small, medium, and large arterioles	Recessed microelectrodes with Nafion membrane	In vivo
Zani and Bohlen (2005) (113)	545 ± 144 nM	Male Sprague-Dawley rats; intestine arterioles	Diameter, 53 μm	Recessed-tip glass microelectrode	In vivo
Nase et al. (2003) (71)	397 ± 26 nM	Male Sprague-Dawley rats; intestine arterioles	Diameter, 52 μm	Recessed-tip glass microelectrode	In vivo
Malinski et al. (1993) (65)	1,300 nM	Adult New Zealand rabbits; thoracic aorta	N/A	Porphyrinic electrochemical sensors	Ex vivo; stimulated by bradykinin