An increase in butanol-extractable 5-hydroxytryptamine in venous blood during reactive hyperaemia

Butanol-extractable iodine of serum.

It has been demonstrated chemically that the iodine bound to proteins of the serum is predominantly composed of thyroxine (1-4). The concentration of this protein-bound or serum precipitable iodine (SPI) appears to be closely correlated with the activity of the thyroid gland (5-7). It is probably the most precise clinical criterion of such activity that has yet been extensively employed. It is,...

Serum Butanol-Extractable Iodines in Abortions ‡

Reproducibility of blood flow and post-occlusive reactive hyperaemia as measured by venous occlusion plethysmography.

Venous occlusion plethysmography is commonly used as a tool to assess BF (blood flow) and VR (vascular resistance) at baseline and during PORH (post-occlusive reactive hyperaemia). However, little is known about the reproducibility of this method. The purpose of the present study was to investigate short- (hours) and medium (week)-term reproducibility of forearm, calf and thigh BF and VR at bas...

Blood 5-hydroxytryptamine levels in the newborn.

Method Whole-blood 5HT levels were measured by the method of Contractor (1964) with the following modifications. (a) Capillary blood obtained from the heel with minimal squeezing was used instead of venous blood. It had previously been established in four normal adults that 5HT levels in capillary and venous blood drawn simultaneously were in close agreement. (b) The procedure was scaled down t...

Butanol-extractable iodine in human and bovine colostrum and milk.

High total iodine content and significant amounts of iodinated amino acids, but not of thyronines, have been reported in milk of various species. Since the human neonate requires thyroxine-like iodine compounds for central nervous system development, analyses of thyroxine-like iodine compounds such as butanol-extractable iodine of colostrum or early milk were indicated. Four samples of human mi...