Molecular cloning, immunological characterization, and expression analysis of gonadotropin-releasing hormone (GnRH) in the brain of the Chinese alligator during different stages of reproductive cycle

Gene ◽  
2021 ◽  
Vol 789 ◽  
pp. 145672
Author(s):  
Haitao Nie ◽  
Ruidong Zhang ◽  
Xiaoqin Yu ◽  
Yuqian Zhang ◽  
Peng Yan ◽  
...  
Keyword(s):  
Molecular Cloning ◽  
Expression Analysis ◽  
Reproductive Cycle ◽  
Gonadotropin Releasing Hormone ◽  
Immunological Characterization ◽  
Releasing Hormone ◽  
Chinese Alligator ◽  
The Brain

Distribution and variation in gonadotropin releasing hormone-I (GnRH-I) immunoreactive neurons in the brain of the native Thai chicken during the reproductive cycle

2012 ◽  
Vol 114 (5) ◽  
pp. 409-420 ◽  
Author(s):  
Natagarn Sartsoongnoen ◽  
Nattiya Prakobsaeng ◽  
Sunantha Kosonsiriluk ◽  
Orn-anong Chaiyachet ◽  
Duangsuda Chokchaloemwong ◽  
...  
Keyword(s):  
Reproductive Cycle ◽  
Gonadotropin Releasing Hormone ◽  
Releasing Hormone ◽  
The Brain

Distribution of lamprey gonadotropin-releasing hormone in the brain and pituitary gland of larval, metamorphic, and adult sea lampreys, Petromyzon marinus

1994 ◽  
Vol 72 (1) ◽  
pp. 48-53 ◽  
Author(s):  
Glenda M. Wright ◽  
Kim M. McBurney ◽  
John H. Youson ◽  
Stacia A. Sower
Keyword(s):  
Pituitary Gland ◽  
Preoptic Area ◽  
Petromyzon Marinus ◽  
Gonadotropin Releasing Hormone ◽  
Immunoperoxidase Technique ◽  
Dorsal Region ◽  
Releasing Hormone ◽  
Sea Lampreys ◽  
The Brain

Lamprey gonadotropin-releasing hormone was demonstrated in the brains of larval, metamorphic, and adult sea lampreys, Petromyzon marinus, using an immunoperoxidase technique. Gonadotropin-releasing hormone was observed in the neurohypophysis and preoptic area of the brain of larval, metamorphic, juvenile, and prespawning adults. The occurrence of immunoreactive cells and the intensity of the immunostaining was lowest in larvae, but by stage 5 of metamorphosis there was a marked increase in the prevalence and staining of these cells, which continued into adults. In larvae and lampreys in metamorphic stages 1–4, most immunoreactive fibres were confined to the dorsal region of the neurohypophysis. During stage 5 there was an expansion of immunopositive fibres into the ventral portion of the neurohypophysis. Prominent immunoreactivity was observed throughout the neurohypophysis from stage 5 onward through the adult stages. Changes in immunoreactivity of these cells and fibres in the brain and neurohypophysis correlate well with increased concentrations of hormone in the brain during development and with the timing of presumed changes in activity of cells in the adenohypophysis during metamorphosis.

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