OBJECTIVE: Kisspeptins (Kps), were first found to regulate the hypothalamopituitary-gonadal axis (HPG) axis in 2003, when two groups-demonstrated that mutations of GPR54 causes idiopathic hypogonadotropic hypogonadism (IHH) characterized by delayed puberty. Objective of this review is to highlight both animal and human discoveries in KISS1/GPR54 system in last decade and extrapolate the therapeutic potential in humans from till date human studies. DESIGN: A systematic review of international scientific literature by a search of PUBMED and the authors files was done for Kp in reproduction, metabolic control & signal transduction. SETTING: None Patient(s): In human studies--normal subjects patients with HH, or HA. MAIN OUTCOME MEASURES: Effects of Kp on puberty, brain sexual maturation, regulation of GnRH secretion, metabolic control of GnRH Neurons (N). RESULTS: Kps/GPR54 are critical for brain sexual maturation, puberty and regulation of reproduction. Kps have been implicated in mediating signals to GnRH N--positive and negative feedback, metabolic input. Ability of Kp neurons to coordinate signals impinging on the HPG axis makes it one of most important regulators of reproductive axis since GnRH N's lack many receptors, with Kp neurons serving as upstream modulators. CONCLUSIONS: Kps have proven as pivotal regulators of the reproduction, with the ability to integrate signals from both internal and external sources. Knowledge about signaling mechanisms involved in Kp stimulation of GnRH and with human studies has made it possible that therapeutically available Kp agonists/antagonists may be used for treatment of delayed puberty/HH, Hypothalamic amenorrhea and in prevention of spread of malignant ovarian/gonadal malignancies along with uses in some eating disorders.
OBJECTIVE: Kisspeptins (Kps), were first found to regulate the hypothalamopituitary-gonadal axis (HPG) axis in 2003, when two groups-demonstrated that mutations of GPR54 causes idiopathic hypogonadotropic hypogonadism (IHH) characterized by delayed puberty. Objective of this review is to highlight both animal and human discoveries in KISS1/GPR54 system in last decade and extrapolate the therapeutic potential in humans from till date human studies. DESIGN: A systematic review of international scientific literature by a search of PUBMED and the authors files was done for Kp in reproduction, metabolic control & signal transduction. SETTING: None Patient(s): In human studies--normal subjects patients with HH, or HA. MAIN OUTCOME MEASURES: Effects of Kp on puberty, brain sexual maturation, regulation of GnRH secretion, metabolic control of GnRH Neurons (N). RESULTS: Kps/GPR54 are critical for brain sexual maturation, puberty and regulation of reproduction. Kps have been implicated in mediating signals to GnRH N--positive and negative feedback, metabolic input. Ability of Kp neurons to coordinate signals impinging on the HPG axis makes it one of most important regulators of reproductive axis since GnRH N's lack many receptors, with Kp neurons serving as upstream modulators. CONCLUSIONS: Kps have proven as pivotal regulators of the reproduction, with the ability to integrate signals from both internal and external sources. Knowledge about signaling mechanisms involved in Kp stimulation of GnRH and with human studies has made it possible that therapeutically available Kp agonists/antagonists may be used for treatment of delayed puberty/HH, Hypothalamic amenorrhea and in prevention of spread of malignant ovarian/gonadal malignancies along with uses in some eating disorders.
Authors: M Kotani; M Detheux; A Vandenbogaerde; D Communi; J M Vanderwinden; E Le Poul; S Brézillon; R Tyldesley; N Suarez-Huerta; F Vandeput; C Blanpain; S N Schiffmann; G Vassart; M Parmentier Journal: J Biol Chem Date: 2001-07-16 Impact factor: 5.157
Authors: J H Lee; M E Miele; D J Hicks; K K Phillips; J M Trent; B E Weissman; D R Welch Journal: J Natl Cancer Inst Date: 1996-12-04 Impact factor: 13.506
Authors: V M Navarro; J M Castellano; R Fernández-Fernández; M L Barreiro; J Roa; J E Sanchez-Criado; E Aguilar; C Dieguez; L Pinilla; M Tena-Sempere Journal: Endocrinology Date: 2004-07-08 Impact factor: 4.736
Authors: Ingo Kaczmarek; Jan Groetzner; Ioannis Adamidis; Peter Landwehr; Markus Mueller; Michael Vogeser; Michael Gerstorfer; Peter Uberfuhr; Bruno Meiser; Bruno Reichart Journal: Am J Transplant Date: 2004-07 Impact factor: 8.086
Authors: M L Gottsch; M J Cunningham; J T Smith; S M Popa; B V Acohido; W F Crowley; S Seminara; D K Clifton; R A Steiner Journal: Endocrinology Date: 2004-06-24 Impact factor: 4.736