Figure 4.
l-cysteine suppresses plasma acyl ghrelin levels in rats. Plasma levels of (a) acyl ghrelin and (b) l-r: GLP-1 and PYY, 30 min after oral gavage of water or 4 mmol kg−1 l-cysteine (n=7–8), (c) acyl ghrelin and (d) l-r: GLP-1 and PYY, 30 min after intraperitoneal administration of saline or 2 mmol kg−1 l-cysteine (n=6–8). (e) The effect of 2 mmol kg−1 l-cysteine on 0–1-h food intake in wild-type and transgenic ghrelin-overexpressing mice after an overnight fast (n=15–21). Data expressed as mean±s.e.m. *P<0.05, **P<0.01, ***P<0.001.