Correlation between Saliva and Plasma Levels of Endothelin Isoforms ET-1, ET-2, and ET-3

Figure 2

Correlation between endothelin isoforms BET-1 (a), ET-1 (b), ET-2 (c), and ET-3 (d) in plasma and saliva of male subjects () measured by HPLC-fluorescence. Assuming simple linearity, the linear regression (solid line) intercept on saliva axis is an estimate of salivary gland endothelin production ( and values indicated). The linear regression forced through zero (dashed line) assumes diffusion of endothelins entirely from plasma.

(a)

(b)

(c)

(d)