preoptic area


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pre·op·tic re·gion

the most anterior part of the hypothalamus surrounding the anterior or preoptic part of the third ventricle and including the lamina terminalis; containing the lateral and medial preoptic nucleus continuous caudally with, respectively, the lateral and anterior hypothalamic nucleus; rostrally the preoptic region is continuous with the precommissural septum, laterally with the innominate substance.
Synonym(s): area preoptica [TA], preoptic area [TA]
Farlex Partner Medical Dictionary © Farlex 2012

preoptic area

(prē-ŏp-tĭk)
The anterior portion of the hypothalamus. It is above the optic chiasma and on the sides of the third ventricle.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Some studies have demonstrated that a large horizontal cut made between the septum and preoptic area strongly facilitates lordosis and soliciting behavior both in female and male rats and these suggest the importance of ventral neural output of septum in the mechanism of inhibition of female sexual behavior in rats.
Caption: Figure 2: Preoptic area (POA) expression of IL-1[beta], IL-2, TNF-[alpha], and IFN-[gamma] in CBA/Ca male and female mice in control (CTRL) and Plasmodium berghei ANKA-infected groups in response to manipulation (sham group) or surgery (gonadectomy).
Qu et al., "Morphine inhibits sleep-promoting neurons in the ventrolateral preoptic area via mu receptors and induces wakefulness in rats," Neuropsychopharmacology, vol.
Moenter, "Differential regulation of GnRH secretion in the preoptic area (POA) and the median eminence (ME) in male mice," Endocrinology, vol.
For example, the preoptic area, BST, and piriform cortex express ENK without evidence for a potential role in resilience to chronic stress, to our knowledge.
Testosterone regulates the density of dendritic spines in the male preoptic area. Horm Behav.
Genotypes carrying G allele may be accompanied by alterations of kisspeptin/neurokinin B/dynorphin (KNDy) neurons of the hypothalamus and these altered neurons (via projections to rostral hypothalamic structures such as the medial preoptic area and medial preoptic nucleus which control thermoregulatory effectors) could maximize the vasodilatation of the skin as well as the inflammation (induced by vasodilatation), resulting in development of PP rosacea [6, 20, 33].
Classical lesion studies in rodents have pointed out the medial preoptic area of the hypothalamus (MPOA), the bed nucleus of the stria terminalis (BNST), and the lateral septum (LS) as crucial brain areas for the onset and maintenance of the maternal behavior (e.g.
Murata, "Afferent and efferent connections of the medial preoptic area in the rat: a WGA-HRP study," Brain Research Bulletin, vol.
Mas, "Androgens stimulate preoptic area [Na.sup.+], [K.sup.+]-ATPase activity in male rats," Neuroscience Letters, vol.
Testosterone may also facilitate male sexual behavior by increasing dopamine release in the medial preoptic area and potentiating nitrergic neurotransmission (Sharma et al., 2011).