1
|
Silva BR, Costa FC, De Lima Neto MF, Caetano Filho FF, de Assis EIT, Aguiar FLN, Silva AWB, Martins SD, Araújo VR, Matos MHT, Costa JJN, Silva JRV. Melatonin acts through different mechanisms to control oxidative stress and primordial follicle activation and survival during in vitro culture of bovine ovarian tissue. Domest Anim Endocrinol 2024; 86:106824. [PMID: 37976887 DOI: 10.1016/j.domaniend.2023.106824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/19/2023]
Abstract
This study aims to evaluate the effects of melatonin and its mechanisms of action on preantral follicle activation and survival, stromal cell density and collagen distribution in extracellular matrix (ECM). The involvement of melatonin receptors and mTORC1 pathway in these procedures were also investigated. To this end, ovarian fragments were cultured for six days in α-MEM+ alone or supplemented with 1000 pM melatonin, 1000 pM melatonin with 1000 pM luzindole (inhibitor of melatonin receptors), or 1000 pM melatonin with 0.16 µg/ml rapamycin (mTORC1 inhibitor). At the end of culture period, tissues were processed for classical histology, and the follicles were classified as normal or degenerated, as well as in primordial or growing follicles. The ovarian stromal cell density and ECM collagen distribution were also evaluated. Samples of ovarian tissues were also destined to measure the levels of thiol and mRNA for CAT, SOD, GPX1 and PRDX1, as well as the activity of antioxidant enzymes CAT, SOD, and GPX1. The results demonstrated that ovarian tissues cultured with melatonin, melatonin with luzindole or melatonin with rapamycin had significantly higher percentage of morphologically normal follicles than those cultured in control medium (α-MEM+). However, the presence of either luzindole or rapamycin, did not block the positive effects of melatonin on follicle survival (P > 0.05). Although the presence of melatonin in culture medium reduced the percentage of primordial follicles and increased the percentage of development follicles, these positive effects of melatonin were blocked by either luzindole or rapamycin (P < 0.05). Melatonin, melatonin with luzindole or melatonin with rapamycin did not influence the number of ovarian stromal cells. In contrast, melatonin significantly increased the percentages of collagen in ovarian tissues, but the positive effects of melatonin were blocked by either luzindole or rapamycin. Tissues cultured with melatonin and rapamycin had higher levels of mRNA for CAT and lower GPx activity when compared to those cultured in control medium. In conclusion, melatonin promotes primordial follicle activation, increases collagen fiber in ECM of in vitro cultured bovine ovarian tissue through its membrane-coupled receptors and mTORC1. Oppositely, melatonin increase follicles survival by acting through other pathways, since it can pass through cell membranes and directly regulate oxidative stress.
Collapse
Affiliation(s)
- Bianca R Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, postal code 62041-040, Sobral, CE, Brazil
| | - Francisco C Costa
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, postal code 62041-040, Sobral, CE, Brazil
| | - Miguel F De Lima Neto
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, postal code 62041-040, Sobral, CE, Brazil
| | - Francisco F Caetano Filho
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, postal code 62041-040, Sobral, CE, Brazil
| | - Ernando I T de Assis
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, postal code 62041-040, Sobral, CE, Brazil
| | - Francisco L N Aguiar
- Department of Veterinary Medicine, Sousa Campus, Federal Institute of Education, Science and Technology of Paraíba, Sousa, Paraíba, Brazil
| | - Anderson W B Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, postal code 62041-040, Sobral, CE, Brazil
| | - Solano D Martins
- Laboratory of Biochemistry and Gene Expression, Higher Institute of Biomedical Sciences, State University of Ceará, Fortaleza, CE, 60714-903, Brazil
| | - Valdevane R Araújo
- Laboratory of Biochemistry and Gene Expression, Higher Institute of Biomedical Sciences, State University of Ceará, Fortaleza, CE, 60714-903, Brazil
| | - Maria H T Matos
- Laboratory of Cell Biology, Cytology and Histology, Federal University of Vale do São Francisco (UNIVASF), Petrolina, Pernambuco, Brazil
| | - José J N Costa
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, postal code 62041-040, Sobral, CE, Brazil
| | - José R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, postal code 62041-040, Sobral, CE, Brazil.
| |
Collapse
|
2
|
Barroso PAA, Nascimento DR, Lima Neto MFD, De Assis EIT, Figueira CS, Silva JRV. Therapeutic potential of nanotechnology in reproduction disorders and possible limitations. ZYGOTE 2023; 31:433-440. [PMID: 37537957 DOI: 10.1017/s0967199423000424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
One of the prominent peculiarities of nanoparticles (NPs) is their ability to cross biological barriers. Therefore, the development of NPs with different properties has great therapeutic potential in the area of reproduction because the association of drugs, hormones and other compounds with NPs represents an alternative for delivering substances directly at a specific site and for treatment of reproductive problems. Additionally, lipid-based NPs can be taken up by the tissues of patients with ovarian failure, deep endometriosis, testicular dysfunctions, etc., opening up new perspectives for the treatment of these diseases. The development of nanomaterials with specific size, shape, ligand density and charge certainly will contribute to the next generation of therapies to solve fertility problems in humans. Therefore, this review discusses the potential of NPs to treat reproductive disorders, as well as to regulate the levels of the associated hormones. The possible limitations of the clinical use of NPs are also highlighted.
Collapse
Affiliation(s)
- Pedro Alves Aguiar Barroso
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará - UFC, Sobral-CE, Brazil
| | - Danisvânia Ripardo Nascimento
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará - UFC, Sobral-CE, Brazil
| | - Miguel F De Lima Neto
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará - UFC, Sobral-CE, Brazil
- Research Center of Animal Experimentation (NUPEX), Federal University of Ceará - UFC, Sobral-CE, Brazil
| | - Ernando Igo T De Assis
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará - UFC, Sobral-CE, Brazil
- Research Center of Animal Experimentation (NUPEX), Federal University of Ceará - UFC, Sobral-CE, Brazil
| | - Ciro Siqueira Figueira
- Laboratory of Material Engineering and Simulation of Sobral (LEMSS), Federal University of Ceará - UFC, Sobral-CE, Brazil
| | - José Roberto Viana Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará - UFC, Sobral-CE, Brazil
| |
Collapse
|