Encéfalo/metabolismo; Estro; Hipertiroidismo/fisiopatología; Hipotiroidismo/fisiopatología; Oligopéptidos/metabolismo; Reproducción; Animales; Estradiol/sangre; Femenino; Hormona Luteinizante/sangre; Progesterona/sangre; Ratas; Ratas Wistar; Tirotropina/sangre

125I-Tyr NEI; AVPV; D(2); D2; E; Estrous cycle; GnRH; HPG; HPT; Hyperthyroidism; Hypothalamus; Hypothyroidism; IHy; LH; ME; ME and arcuate nucleus; ME+Arc; MPA; NEI; Neuropeptide glutamic-acid-isoleucine-amide; Neuropeptide glutamic-acid-isoleucine-amide (NEI); OVLT; P; PLH; PP; PeFLH; Reproduction; T(3); THs; TRH; TSH; anteroventral periventricular nucleus; estrus; gonadotropin releasing hormone; hyperT; hyperthyroidism induction; hypoT; hypothalamic­pituitary­gonadal axis; hypothalamic­pituitary­thyroid axis; hypothyroidism induction; incerto-hypothalamic area; l-T(4); l-thyroxine; luteinizing hormone; medial preoptic area; median eminence; organum vasculosum of the lamina terminalis; peduncular part of the lateral hypothalamus; perifornical part of the lateral hypothalamus; posterior pituitary; ppMCH; pre-pro-melanin concentrating hormone; proestrus; second day of diestrus; thyroid hormones; thyrotropin; thyrotropin-releasing hormone; triiodothyronine; type 2 iodothyronine deiodinase; tyrosine radioiodinated NEI