Chemistry

A major hormone secreted by the pinealocyte is melatonin, shown in Figure 18-1. Serotonin and N-acetylse-rotonin also are important in the pineal, but they may not be secreted. Both melatonin and serotonin are derived from tryptophan, with the characteristic feature of all of these compounds being the indole ring (Figure 18-1). Other hydroxy- and methoxyindoles are present in the pinealocyte, as will be evident from the discussion of the biochemistry.

The pinealocyte may secrete a peptide, vasotocin, which may have important activities in reproductive functions and which is related in structure to oxytocin and vasopressin (Figure 4-4).

Two neurophysins have been found in the pineal gland. Neurophysins are proteins derived from the same gene product as either vasopressin or oxytocin in the hypothalamus.

Sirens Sleep Solution

Sirens Sleep Solution

Discover How To Sleep In Peace And Harmony In A World Full Of Uncertainty And Dramatically Improve Your Quality Of Life Today! Finally You Can Fully Equip Yourself With These “Must Have” Tools For Achieving Peace And Calmness And Live A Life Of Comfort That You Deserve!

Get My Free Ebook


Post a comment