Immunohistochemical localization of gonadotropin-releasing hormone receptors (GnRHR) in the nervous system, Hatschek’s pit and gonads of amphioxus,Branchiostoma belcheri |
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Authors: | Yongqiang Fang Weiquan Huang Lei Chen |
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Institution: | (1) The Third Institute of Oceanography, State Ocean Administration, 361005 Xiamen, China;(2) The Fourth Military Medical College, 710032 Xi’ an, China |
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Abstract: | Using gonadotropin-releasing hormone (GnRH) anti-idiotypic antibodies and APA immunohistochemical method, the immunoreactivity
of GnRHR in the nervous system, Hatschek’s pit and gonads of amphioxus has been located. It is found for the first time that
the immunoreactivity of GnRHR exists in the nerve cells and fibers in the amphioxus’s brain and nerve tube and the epithelial
cells of Hatschek’s pit at the different stages of gonadal development. At the same time, it is also found that GnRHR also
exists in the ovary and testis of different developed stages. These findings provide morphological new proof for the informative
transfer and regulation between brain and Hatschek’s pit mediation by GnRHR, and for the understanding of the mechanism of
action on the reproductive endocrine control axis among brain-Hatschek’s pit-gonads. |
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Keywords: | amphioxus GnRHR Immunohistochemistry nervous system gonads Hatschek’ s pit |
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