Article (Scientific journals)
Immunohistochemical evidence for the presence of various kisspeptin isoforms in the mammalian brain.
Franceschini, I.; Yeo, S. H.; Beltramo, M. et al.
2013In Journal of Neuroendocrinology, 25 (9), p. 839-51
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Keywords :
Animals; Brain/metabolism; Cell Count; Estrous Cycle/metabolism; Female; Immunohistochemistry; Kisspeptins/metabolism; Male; Mice; Mice, Knockout; Neurons/metabolism; Protein Isoforms/metabolism; Rats; antibodies; brain; kisspeptin
Abstract :
[en] Kisspeptins are small peptides encoded by the Kiss1 gene that have been the focus of intense neuroendocrine research during the last decade. Kisspeptin is now considered to have important roles in the regulation of puberty onset and adult oestrogen-dependent feedback mechanisms on gonadotrophin-releasing hormone secretion. Several kisspeptin antibodies have been generated that have enabled an overall view of kisspeptin peptide distribution in the brain of many mammalian species. However, it remains that the distribution of the different kisspeptin isoforms is unclear in the mammalian brain. In the present study, we report on two new N-terminal-directed kisspeptin antibodies, one against the mouse kisspeptin-52 sequence (AC053) and one against the rat kisspeptin-52 sequence (AC067), and use them to specifically map these long isoforms in the brains of mouse and rat, respectively. Kisspeptin-52 immunoreactivity was detected in the two main kisspeptin neuronal populations of the rostral periventricular area and arcuate nucleus but not in the dorsomedial hypothahamus. A large number of fibres throughout the ventral forebrain were also labelled with these two antibodies. Finally, a comparison with the most commonly used C-terminal-directed kisspeptin antibodies further suggests the presence of shorter kisspeptin fragments in the brain with specific inter- and intracellular expression patterns.
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Franceschini, I.
Yeo, S. H.
Beltramo, M.
Desroziers, Elodie ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie de la différenciation sexuelle du cerveau
Okamura, H.
Herbison, A. E.
Caraty, A.
Language :
English
Title :
Immunohistochemical evidence for the presence of various kisspeptin isoforms in the mammalian brain.
Publication date :
2013
Journal title :
Journal of Neuroendocrinology
ISSN :
0953-8194
eISSN :
1365-2826
Publisher :
Wiley, Malden, United States - Massachusetts
Volume :
25
Issue :
9
Pages :
839-51
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
(c) 2013 British Society for Neuroendocrinology.
Available on ORBi :
since 21 January 2015

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