Webb1 okt. 2024 · 13 N-NH 3 PET/CT imaging has been shown as a sensitive tool for locating and distinguishing pituitary tissue from pituitary adenomas, particularly those with tumor maximum diameter < 2 cm [67]. It is due to 13 N-ammonia shows a higher uptake in the normal pituitary tissue than in PA, indicating that it is a good indicator of adequate … Webb27 jan. 2024 · Traditionally, the pituitary has been viewed as a randomly organized collection of cells that respond to hypothalamic stimuli by secreting their content. However, recent studies have established that pituitary cells are organized in tightly wired large-scale networks that communicate with each other in both homo and heterotypic manners, …
Secretory tumors of the pituitary gland: a clinical biochemistry ...
Webb27 feb. 2024 · Psychological stress has long been identified as having a negative effect on libido. Interestingly, there is a growing body of literature to suggest that stress may also negatively impact male fertility (spermatogenesis) via decreased testosterone production as well as by the inhibitory effects that cortisol has on the HPG axis (Nargund 2015 ). Webb3 maj 2024 · Pituitary - Despite COVID-19 being identified as severe respiratory viral infection, progressively many relevant endocrine manifestations have been reported … chrome pc antigo
The pituitary in nuclear medicine imaging - ScienceDirect
Webb19 aug. 2016 · Due to lack of negative feedback of IGF-1 on pituitary somatotrophs with pegvisomant therapy, it has been suggested that accelerated adenoma progression could occur; however, this has not been seen with long-term analysis. 46 Patients refractory to monotherapy of GH-reducing medications may respond to combination therapy … Webb1 jan. 2001 · Hypothalamic oxytocin, which has been identified as a potential PRF, plays an important role in maintaining the endogenous prolactin-stimulatory rhythm (71, 73,75-77). Indeed, in rats treated with a dopamine antagonist at various times of day to unmask a rhythm of prolactin secretion ( 71 ), administration of an oxytocin antagonist abolishes … Webb9 juni 2010 · Several guinea pig anterior pituitary hormone cDNAs and proteins have been identified and characterized, including those for glycoprotein hormones (8,9), proopiomelanocortin , and GH . Early reports suggested that the guinea pig anterior pituitary possesses PRL-like biological activity ( 12 , 13 , 14 ) and possibly PRL … chrome pdf 转 图片