Introduction S TEROID hormones are familiar clinically and physiologically as regulators of
physiological processes. Five groups of steroid hormones are generally recognized …

In the 60 years that have passed since the discovery of the mineralocorticoid hormone
aldosterone, much has been learned about its synthesis (both adrenal and extra-adrenal) …

The hormonal action of abscisic acid (ABA) in plants is controlled by the precise balance
between its biosynthesis and catabolism. In plants, ABA 8′‐hydroxylation is thought to play …

Publisher Summary This chapter focuses on the techniques used for ecdysteroid analysis
and the biosynthesis and metabolism of these hormones. Ecdysteroids could be defined …

The flavoprotein NADPH-adrenodoxin reductase and the iron sulfur protein adrenodoxin
function as a short electron transport chain which donates electrons one-at-a-time to adrenal …

Abstract 11β-Hydroxyandrostenedione (11OHA4), which is unique to the adrenal, was first
isolated from human adrenal tissue in the fifties. It was later shown in the sixties that 11β …

The steroid hormone output of the adrenal gland is crucial in the maintenance of hormonal
homeostasis, with hormonal imbalances being associated with numerous clinical conditions …

The simplified scheme of adrenal steroidogenesis (Fig. 1) shows the series of enzymatic
steps required for the synthesis of aldosterone, cortisol, and the sex steroids. Decreased …

The adrenal cortex of mammals consists of three concentric zones, ie, the zona glomerulosa
(zG), the zona fasciculata (zF), and the zona reticularis (zR), which secrete …

Abstract 11β-Hydroxyandrostenedione (11OHA4), a major C19 steroid produced by the
adrenal, was first reported in the 1950s. Initially the subject of numerous studies, interest …