1
|
Kirsz K, Szczęsna M, Bocheńska A, Pietsch-Fulbiszewska A, Sowińska N, Kabała N, Zięba DA. Effects of central orexin A on gonadotropins and progesterone secretion in ewes during the luteal phase of the estrous cycle and during anestrus. Small Rumin Res 2019. [DOI: 10.1016/j.smallrumres.2019.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
2
|
Ciccimarra R, Bussolati S, Grasselli F, Grolli S, Ragionieri L, Ravanetti F, Botti M, Gazza F, Cacchioli A, Di Lecce R, Cantoni AM, Basini G. Orexin system in swine ovarian follicles. Domest Anim Endocrinol 2018; 62:49-59. [PMID: 29053993 DOI: 10.1016/j.domaniend.2017.09.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 09/01/2017] [Accepted: 09/03/2017] [Indexed: 11/17/2022]
Abstract
Successful reproduction is strictly linked to metabolic cues. The orexins are a family of hypothalamic neurohormones, well known for their key role in the control of food intake and the involvement in several aspects of the reproductive process. The biological actions of both orexins are carried out through binding to the related Orexin 1 (OX1R) and Orexin 2 (OX2R) G-protein-coupled receptors. The purpose of this study was to investigate the presence of orexin system components in the porcine ovaries, to contribute to expand the knowledge about their pleiotropic role. First, we investigated the localization of orexin A (OXA) and its receptors by immunochemistry in different ovarian districts. Thereafter, we evaluated the expression of the prepro-orexin (PPO) gene and OXA effects on granulosa cell functions. Immunohistochemical study revealed the presence of orexinergic system components in porcine ovarian follicles. Moreover, our data show the expression of PPO messenger RNA in swine ovarian follicles >5 mm. In addition, OXA influences proliferation (P < 0.05), steroidogenic activity (P < 0.05), and redox status of granulosa cells (P < 0.05). Therefore, we hypothesize that OXA could exert a local physiological role in swine ovarian follicles even if further studies are required to deeply define the function of this pleiotropic system.
Collapse
Affiliation(s)
- R Ciccimarra
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy.
| | - S Bussolati
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - F Grasselli
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - S Grolli
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - L Ragionieri
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - F Ravanetti
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - M Botti
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - F Gazza
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - A Cacchioli
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - R Di Lecce
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - A M Cantoni
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| | - G Basini
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, Parma 43126, Italy
| |
Collapse
|
3
|
Nitkiewicz A, Smolinska N, Maleszka A, Chojnowska K, Kaminski T. Expression of orexins and their precursor in the porcine ovary and the influence of orexins on ovarian steroidogenesis in pigs. Anim Reprod Sci 2014; 148:53-62. [PMID: 24916957 DOI: 10.1016/j.anireprosci.2014.03.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 03/16/2014] [Accepted: 03/23/2014] [Indexed: 11/30/2022]
Abstract
Orexins A and B are hypothalamic neuropeptides associated with homeostasis and the reproductive system. The aim of the study was to compare the expression of the prepro-orexin gene and the intensity of orexins immunoreactivity in the porcine ovary (corpora lutea, granulosa and theca interna cells) during four different stages of the oestrous cycle (days: 2-3, 10-12, 14-16 and 17-19) and to examine the in vitro effect of orexins on the secretion of steroid hormones by porcine luteal, granulosa and theca interna cells. The highest expression of prepro-orexin mRNA was observed in theca interna cells on days 17-19 of the oestrous cycle. The highest content of immunoreactive orexin A was noted in corpora lutea on days 10-12 and the highest level of immunoreactive orexin B on days 14-16 of the cycle. Immunoreactive orexin A concentrations were higher in theca interna cells than in granulosa cells, whereas similar levels of immunoreactive orexin B were observed in both cell types. Under in vitro conditions, at the concentration of 10 nM, orexins A and B inhibited FSH-induced oestradiol secretion by granulosa cells. The obtained results suggest that the pattern of orexin peptide expression in the porcine ovary is related to the animals' hormonal status. Our findings imply that orexins can affect porcine reproductive functions through modulation of ovarian steroidogenesis.
Collapse
Affiliation(s)
- Anna Nitkiewicz
- Department of Animal Physiology, University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 1A, 10-719 Olsztyn, Poland
| | - Nina Smolinska
- Department of Animal Physiology, University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 1A, 10-719 Olsztyn, Poland
| | - Anna Maleszka
- Department of Animal Physiology, University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 1A, 10-719 Olsztyn, Poland
| | - Katarzyna Chojnowska
- Department of Animal Physiology, University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 1A, 10-719 Olsztyn, Poland
| | - Tadeusz Kaminski
- Department of Animal Physiology, University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 1A, 10-719 Olsztyn, Poland.
| |
Collapse
|