Title :

Hypothalamic neuroglial plasticity is regulated by anti-Müllerian hormone and disrupted in polycystic ovary syndrome.

Author(s) :

Barbotin, Anne-Laure [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Mimouni, Nour El Houda [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Kuchcinski, Gregory [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Viard, Romain [Auteur]
Imagerie fonctionnelle et exploration du vivant = Lille in vivo imaging and Functional Exploration - PLBS [LiiFE]
Rasika, Sowmyalakshmi [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Mazur, Danièle [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Mauro, Silva [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Simon, Virginie [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Boursier, Angele [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Centre Hospitalier Régional Universitaire [CHU Lille] [CHRU Lille]
Pruvo, Jean-Pierre [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Centre Hospitalier Régional Universitaire [CHU Lille] [CHRU Lille]
Yu, Q. [Auteur]
Candlish, M. [Auteur]
Boehm, U. [Auteur]
Bello, F. D. [Auteur]
Medana, C. [Auteur]
Pigny, Pascal [Auteur]
Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Dewailly, Didier [Auteur]
Lille Neurosciences & Cognition - U 1172 [LilNCog]
Prevot, Vincent [Auteur]
Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer - U837 [JPArc]
Jonard-Catteau, Sophie [Auteur]
Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer - U837 [JPArc]
Giacobini, Paolo [Auteur]
Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer - U837 [JPArc]

Journal title :

EBioMedicine

Pages :

104535

Publisher :

Elsevier

Publication date :

2023-04-01

ISSN :

2352-3964

English keyword(s) :

PCOS
AMH
GnRH
Tanycytes
MR spectroscopy
Hypothalamus

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

BackgroundPolycystic ovary syndrome (PCOS) is the most common reproductive-endocrine disorder affecting between 5 and 18% of women worldwide. An elevated frequency of pulsatile luteinizing hormone (LH) secretion and higher ...
Show more >BackgroundPolycystic ovary syndrome (PCOS) is the most common reproductive-endocrine disorder affecting between 5 and 18% of women worldwide. An elevated frequency of pulsatile luteinizing hormone (LH) secretion and higher serum levels of anti-Müllerian hormone (AMH) are frequently observed in women with PCOS. The origin of these abnormalities is, however, not well understood.MethodsWe studied brain structure and function in women with and without PCOS using proton magnetic resonance spectroscopy (MRS) and diffusion tensor imaging combined with fiber tractography. Then, using a mouse model of PCOS, we investigated by electron microscopy whether AMH played a role on the regulation of hypothalamic structural plasticity.FindingsIncreased AMH serum levels are associated with increased hypothalamic activity/axonal-glial signalling in PCOS patients. Furthermore, we demonstrate that AMH promotes profound micro-structural changes in the murine hypothalamic median eminence (ME), creating a permissive environment for GnRH secretion. These include the retraction of the processes of specialized AMH-sensitive ependymo-glial cells called tanycytes, allowing more GnRH neuron terminals to approach ME blood capillaries both during the run-up to ovulation and in a mouse model of PCOS.InterpretationWe uncovered a central function for AMH in the regulation of fertility by remodeling GnRH terminals and their tanycytic sheaths, and provided insights into the pivotal role of the brain in the establishment and maintenance of neuroendocrine dysfunction in PCOS.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

European Project :

Extra-gonadal roles of Anti-Müllerian Hormone in the aetiology of polycystic ovary syndrome: the domino effect to reproductive neuroendocrine dysfunctions

Collections :

• Miniaturisation pour la Synthèse, l'Analyse et la Protéomique (MSAP) - USR 3290

Source :

Harvested from HAL