THE EFFECTS OF VARIOUS AMINO ACIDS ON PERIPHERAL BLOOD FLOW AND SKIN TEMPERATURE 1

Open Access
Publisher Website
Google Scholar
Abstract
Skin and rectal temps., total O2 consumption, and blood flow through the hand were studied before and after oral admn. of various amino acids. At an environmental temp. of 24[degree] C, ingestion of glycine increased both skin temp. and blood flow of the hand, the effects being most marked 3 hours after ingestion. At environmental temps. of 18[degree]C and 30[degree]C no significant changes were observed. Ingestion of DL-phenylalanine similarly increased hand skin temp. and blood flow; and L-(+)-histidine-mono-HCl effected very slight, questionably significant, increases. Glutamic acid, tyrosine, leucine, and methionine had no effect on skin temp. or hand blood flow. Although 5 of the 7 amino acids definitely increased O2 consumption, no consistent quantitative relationships between total O2 consumption and peripheral blood flow, or total 02 consumption and skin temp., were demonstrated.