AVP is a peptide hormone synthesized in the supraoptic
and paraventricular nuclei of hypothalamus and regulated body water homeostasis (Bisset & Chowdrey, 1988).
They found a cluster of actively firing neurons buried in a tiny brain region called the supraoptic
nucleus, which is known to have leggy projections that release large amounts of hormones like vasopressin directly into the bloodstream.
(https://www.livescience.com/42198-what-is-oxytocin.html) Oxytocin , also called the love hormone or bonding hormone, is produced in two sections of the brain: the supraoptic
nucleus and the paraventricular nucleus.
Sensitivity to the catecholamines is enhanced by TCAs, which may result in arrhythmias and hypertension when indirect- or direct-acting sympathomimetic drugs are used. Similarly, anesthetics known to increase endogenous circulating catecholamines such as ketamine-, pancuronium-, and epinephrine-containing solution should be avoided. Vasopressin is a nonapeptide hormone synthesized in the magnocellular neurons of the paraventricular and supraoptic
nuclei of the hypothalamus. The vasoconstrictive effect of vasopressin is independent of catecholamine and angiotensin receptors.
In rat hypothalamus, P2X2 receptors and neuronal NOS co-localize in the supraoptic
nucleus and rostroventrolateral medulla neurons (17).
Single-minded homolog 1 (SIM1) is a transcription factor involved in the development of the PVN and supraoptic
AG exhibited hypermetabolism in the bed nucleus of the stria terminalis, lateral and midline nucleus group of the dorsal thalamus, mammillary, supraoptic
, and tuberal regions of the hypothalamus, cerebral peduncle, midbrain tegmentum, and pontine tegmentum after 4 weeks (Table 3 and Figure 3(b)).
Nakazato et al., "Centrally administered neuromedin U activates neurosecretion and induction of c-fos messenger ribonucleic acid in the paraventricular and supraoptic
nuclei of rat," Endocrinology, vol.
Moreover, prolactin receptor immunoreactivity or mRNA for prolactin receptors is detected within the PVN, ventromedial hypothalamic nucleus, and supraoptic
nucleus only during lactation, but not in diestrous females .
Jezova, "Daily profiles of arginine vasopressin mRNA in the suprachiasmatic, supraoptic
and paraventricular nuclei of the rat hypothalamus under various photoperiods," Brain Research, vol.
Oxytocin is a neuropeptide secreted by the paraventricular and supraoptic
nuclei located in the hypothalamus .
In addition, Neumann et al  reported that OT exerts positive feedback in the supraoptic
nucleus during suckling, suggesting that natural suckling may increase basal serum OT concentrations in rats.