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Caetano Filho FF, Paulino LRF, Bezerra VS, Azevedo VAN, Barroso PAA, Costa FC, Amorim GG, Silva JRV. Thymol increases primordial follicle activation, protects stromal cells, collagen fibers and down-regulates expression of mRNA for superoxide dismutase 1, catalase and periredoxin 6 in cultured bovine ovarian tissues. Anim Reprod Sci 2024; 266:107514. [PMID: 38824841 DOI: 10.1016/j.anireprosci.2024.107514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/14/2024] [Accepted: 05/25/2024] [Indexed: 06/04/2024]
Abstract
This study aims to investigate the influence of thymol on primordial follicle growth and survival, as well as on collagen fibers and stromal cells density in bovine ovarian tissues cultured in vitro. The activity of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX), the thiol levels and the expression of mRNAs for SOD1, CAT, periredoxin 6 (PRDX6) and GPX1 were also investigated. Ovarian cortical tissues were cultured in α-MEM+ alone or with thymol (400, 800, 1600 or 3200 μg/mL) for six days. Before and after culture, the tissues were processed for histological analysis to evaluate follicular activation, growth, morphology, ovarian stromal cell density and collagen fibers. The levels of mRNA for SOD1, CAT, GPX1 and PRDX6 were evaluated by real-time PCR. The results show that tissues cultured with thymol (400 and 800 µg/mL) had increased percentages of normal follicles, when compared to tissues cultured in other treatments. At concentrations of 400 and 800 µg/mL, thymol maintained the rate of normal follicles similar to the uncultured control. In addition, 400 µg/mL thymol increased follicle activation, collagen fibers and stromal cell density of when compared to tissues cultured in control medium. The presence of 800 µg/mL thymol in culture medium increased CAT activity, while 400 or 800 µg/mL thymol reduced mRNA levels for SOD1, CAT and PRDX6, but did not alter GPX1 expression. In conclusion, 400 µg/mL thymol increases primordial follicle activation, preserves stromal cells, collagen fibers, and down-regulates expression of mRNA for SOD1, CAT and PRDX6 in cultured bovine ovarian tissues.
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Affiliation(s)
- Francisco F Caetano Filho
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Sobral, CE, Brazil
| | - Lais R F Paulino
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Sobral, CE, Brazil
| | - Vitória S Bezerra
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Sobral, CE, Brazil
| | - Venância A N Azevedo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Sobral, CE, Brazil
| | - Pedro A A Barroso
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Sobral, CE, Brazil
| | - Francisco C Costa
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Sobral, CE, Brazil
| | - Geovany G Amorim
- Nucleus of Studies in Bioactive Phytochemicals (NEFB), Vale do Acaraú State University, Sobral, Ceará, Brazil
| | - José R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Sobral, CE, Brazil.
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Nascimento DR, Barbalho EC, Gondim Barrozo L, de Assis EIT, Costa FC, Silva JRV. The mechanisms that control the preantral to early antral follicle transition and the strategies to have efficient culture systems to promote their growth in vitro. ZYGOTE 2023:1-11. [PMID: 37221099 DOI: 10.1017/s0967199423000254] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Preantral to early antral follicles transition is a complex process regulated by endocrine and paracrine factors, as well as by a precise interaction among oocyte, granulosa cells and theca cells. Understanding the mechanisms that regulate this step of folliculogenesis is important to improve in vitro culture systems, and opens new perspectives to use oocytes from preantral follicles for assisted reproductive technologies. Therefore, this review aims to discuss the endocrine and paracrine mechanisms that control granulosa cell proliferation and differentiation, formation of the antral cavity, estradiol production, atresia, and follicular fluid production during the transition from preantral to early antral follicles. The strategies that promote in vitro growth of preantral follicles are also discussed.
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Affiliation(s)
- D R Nascimento
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - E C Barbalho
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - L Gondim Barrozo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - E I T de Assis
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - F C Costa
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - J R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
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Transcriptome analysis of differentially expressed genes in rabbits' ovaries by digital gene-expression profiling. Genes Genomics 2018; 40:687-700. [PMID: 29934810 DOI: 10.1007/s13258-018-0651-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 12/10/2017] [Indexed: 10/17/2022]
Abstract
Reproduction is a complex physiological process that is regulated by multiple genes and pathways. Compared with studies of common livestock, fewer studies of genes related to the fertility of rabbits (Oryctolagus cuniculus) have been reported, and the molecular mechanism of their high productivity is still poorly understood. To identify candidate genes associated with development and prolificacy in rabbits, we analyzed gene expression differences among the ovaries of mature Californian rabbit (LC), and mature (HH) and immature Harbin white rabbit (IH) using digital gene expression technology. We detected 885 and 321 genes that were significantly differentially expressed in comparisons between HH/IH and HH/LC, respectively. The functions of the differentially expressed genes (DEGs) were determined by GO classification and KEGG pathway analysis. The results suggest that most of the DEGs between the mature and immature developmental stages were predominantly associated with DNA replication, cell cycle, and progesterone-mediated oocyte maturation, and most were up-regulated in the IH group compared with the HH group. The DEGs involved in disparate fecundities between HH and LC were associated with reproduction, fructose and mannose metabolism, steroid hormone biosynthesis, and pyruvate metabolism. Our results will contribute to a better understanding of changes in the regulatory network in ovary at different developmental stages and in different fertility of rabbit.
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Bhardwaj JK, Saraf P. Granulosa cell apoptosis by impairing antioxidant defense system and cellular integrity in caprine antral follicles post malathion exposure. ENVIRONMENTAL TOXICOLOGY 2016; 31:1944-1954. [PMID: 26420608 DOI: 10.1002/tox.22195] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/09/2015] [Accepted: 09/13/2015] [Indexed: 06/05/2023]
Abstract
Toxicological studies have demonstrated the exposure-risk relationship of several pesticides on reproduction of living organisms. To evaluate the role of malathion as a reproductive toxicant, this study aims at assessing the cytological and biochemical changes in the granulosa cells after malathion exposure in dose (1 nM, 10 nM, 100 nM) and time (4 h, 6 h, 8 h) dependent manner. Histomorphological analysis, fluorescence assay, apoptosis quantification, and terminal deoxynucleotidyl transferase d-UTP mediated nick end labeling (TUNEL) assay were done to determine cytological changes, whereas antioxidant enzyme assays were done to measure the oxidative stress in malathion treated ovarian antral follicles. Histological studies exhibited the occurrence of highly condensed or marginated chromatin with fragmented nucleus, pyknosis, loss of membrane integrity, increased empty spaces, and vacuolization in malathion treated granulosa cells. Ethidium bromide/acridine orange (EB/AO) fluorescence staining demonstrated a significant increase in incidence and percentage of apoptosis after malathion exposure (p < 0.001), both between and within the groups. Malathion exposure also resulted in increased DNA fragmentation and decline in both antioxidant enzymes activity namely catalase (CAT) and superoxide dismutase (SOD) in granulosa cells of antral follicles. Moreover, there was found a significant negative correlation between the apoptosis incidence and the level of antioxidant enzymes activity, SOD (r = -0.73 p < 0.01) and CAT (r = -0.80 p < 0.01), in malathion treated ovarian antral follicles. Thus, highlighting the role of DNA fragmentation and declining antioxidant level as a possible mechanism underlying malathion induced reproductive toxicity. © 2015 Wiley Periodicals, Inc. Environ Toxicol 31: 1944-1954, 2016.
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Affiliation(s)
- Jitender Kumar Bhardwaj
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Priyanka Saraf
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, Haryana, 136119, India
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Silva JRV, van den Hurk R, Figueiredo JR. Ovarian follicle development in vitro and oocyte competence: advances and challenges for farm animals. Domest Anim Endocrinol 2016; 55:123-35. [PMID: 26836404 DOI: 10.1016/j.domaniend.2015.12.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 12/14/2015] [Accepted: 12/31/2015] [Indexed: 10/22/2022]
Abstract
During the last 2 decades, research on in vitro preantral follicle growth and oocyte maturation has delivered fascinating advances concerning the knowledge of processes regulating follicle growth and the developmental competence of oocytes. These advances include (1) information about the role of several hormones and growth factors on in vitro activation of primordial follicles; (2) increased understanding of the intracellular pathway involved in the initiation of primordial follicle growth; (3) the growth of primary and secondary follicles up to antral stages; and (4) production of embryos from oocytes from in vitro grown preantral follicles. This review article describes these advances, especially in regard farm animals, and discusses the reasons that limit embryo production from oocytes derived from preantral follicles cultured in vitro.
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Affiliation(s)
- J R V Silva
- Biotechnology Nucleus of Sobral, Federal University of Ceara, Sobral, CE 62042-280, Brazil.
| | - R van den Hurk
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Utrecht 80151, The Netherlands
| | - J R Figueiredo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceara, Fortaleza, CE 62700-000, Brazil
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Araújo VR, Silva GM, Duarte ABG, Magalhães-Padilha DM, Almeida AP, Lunardi FO, Serafim MKB, Moura AAA, Campello CC, Rodrigues APR, Figueiredo JR. Bone Morphogenetic Protein-6 (BMP-6) Stimulates the Antrum Formation by the Regulation of its Signalling Pathway in Caprine Pre-antral Follicles Cultured In Vitro. Reprod Domest Anim 2015; 51:59-68. [PMID: 26660854 DOI: 10.1111/rda.12646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 10/27/2015] [Indexed: 01/18/2023]
Abstract
BMP-6 has been found to be important to ovarian cells and oocyte, as well as to uterus. Thus, this study investigated the effect of bone morphogenetic protein (BMP-6) and recombinant follicle-stimulating hormone (rFSH) alone or in combination on the in vitro culture (IVC) of isolated caprine secondary follicles (Experiment 1) and the mRNA levels for BMP receptors/Smad signalling pathway (BMPR1A, BMPR2, SMAD1, SMAD4, SMAD5, SMAD6, SMAD7 and SMAD8) in vivo and in vitro using BMP-6 (Experiment 2). Secondary follicles were cultured in αMEM(+) alone (control medium) or supplemented with BMP-6 at 1 or 10 ng/ml and rFSH alone or the combination of both BMP-6 concentrations and rFSH. The results from Experiment 1 showed that the antrum formation rate was higher in the BMP-6 at 1 ng/ml (p < 0.05) than in MEM. In Experiment 2, the mRNA expression for BMPR2, SMAD1, SMAD5 and SMAD6 was detected in non-cultured control and after in vitro culture (MEM and 1 ng/ml BMP-6); while the expression of SMAD7 and SMAD8 mRNA was only detected after IVC, SMAD4 was only detected in the BMP-6 at 1 ng/ml treatment. In conclusion, the low BMP-6 concentration positively influenced antrum formation and ensured normal mRNA expression for BMP receptor and Smads after IVC of caprine secondary follicles.
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Affiliation(s)
- V R Araújo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - G M Silva
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A B G Duarte
- Medical School, Morphology Department, Federal University of Ceará, Fortaleza, CE, Brazil
| | - D M Magalhães-Padilha
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A P Almeida
- Laboratory of Molecular Biology and Development, University of Fortaleza, Fortaleza, CE, Brazil
| | - F O Lunardi
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - M K B Serafim
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A A A Moura
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, CE, Brazil
| | - C C Campello
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A P R Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - J R Figueiredo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
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Lopes T, Costa J, Ribeiro R, Passos J, Soares M, Alves Filho J, Cunha E, van den Hurk R, Pinheiro A, Silva J. Influence of caprine arthritis encephalitis on expression of ovulation related genes and activation of primordial follicles cultured in presence of phytohemagglutinin, epidermal growth factor or both. Small Rumin Res 2015. [DOI: 10.1016/j.smallrumres.2014.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
The bone morphogenetic protein (BMP) family consists of several growth factor proteins that belong to the transforming growth factor-β (TGF-β) superfamily. BMPs bind to type I and type II serine-threonine kinase receptors, and transduce signals through the Smad signalling pathway. BMPs have been identified in mammalian ovaries, and functional studies have shown that they are involved in the regulation of oogenesis and folliculogenesis. This review summarizes the role of the BMP system during formation, growth and maturation of ovarian follicles in mammals.
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9
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Bhardwaj JK, Saraf P. Malathion-induced granulosa cell apoptosis in caprine antral follicles: an ultrastructural and flow cytometric analysis. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2014; 20:1861-1868. [PMID: 25409908 DOI: 10.1017/s1431927614013452] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Organophosphate pesticides (OPs) like malathion interfere with normal ovarian function resulting in an increased incidence of atresia and granulosa cell apoptosis that plays a consequential role in the loss of ovarian follicles or follicular atresia. The aim of present study was to assess malathion-induced (100 nM) reproductive stress, ultrastructural damage and changes in apoptosis frequency in ovarian granulosa cells of antral follicles. Transmission electron microscopy (TEM) was employed for ultrastructural characterization, oxidative stress was evaluated using thiobarbituric acid reactive substances (TBARS) assay to measure lipid peroxidation, and apoptosis was quantified via flow cytometry. By TEM, apoptosis was identified by the presence of an indented nuclear membrane with blebbing, pyknotic crescent-shaped fragmented nuclei, increased vacuolization, degenerating mitochondria, and lipid droplets. The results indicate a significant increase in malondialdehyde (MDA) level (nmols/g wet tissue) at a 100 nM dose of malathion i.e. 7.57±0.033*, 8.53±0.12*, and 12.87±0.78** at 4, 6, or 8 h, respectively, as compared with controls (6.07±0.033, p<0.01*, p<0.05**) showing a positive correlation between malathion-induced lipid peroxidation and percentage of granulosa cell apoptosis (r=1; p<0.01). The parallel use of these three methods enabled us to determine the role of malathion in inducing apoptosis as a consequence of cytogenetic damage and oxidative stress generated in granulosa cells of antral follicles.
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Affiliation(s)
- Jitender K Bhardwaj
- Reproductive Physiology Laboratory,Department of Zoology,Kurukshetra University,Kurukshetra-136119,Haryana,India
| | - Priyanka Saraf
- Reproductive Physiology Laboratory,Department of Zoology,Kurukshetra University,Kurukshetra-136119,Haryana,India
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Pessoa AFC, Rocha RMP, Brito IR, Silva GM, Chaves RN, Magalhães-Padilha DM, Campello CC, Rodrigues APR, Nunes-Pinheiro DCS, Figueiredo JR. Effect of morphological integrity, period, and type of culture system on the in vitro development of isolated caprine preantral follicles. Theriogenology 2014; 82:312-7. [PMID: 24839921 DOI: 10.1016/j.theriogenology.2014.04.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 04/10/2014] [Accepted: 04/10/2014] [Indexed: 11/28/2022]
Abstract
The aims of this study were the following: (1) to define an optimal period for the IVC of isolated caprine preantral follicles, (2) to verify the relationship between follicular morphology (intact, extruded, and degenerate follicles) and estradiol production, and (3) to evaluate the effects of the bidimensional (2D) and three-dimensional (3D) culture systems on the in vitro development of caprine preantral follicles. Three experiments were performed. In experiments 1 and 2, the isolated secondary follicles were cultured for 18, 24, and 30 days or 30, 36, and 42 days, respectively. In experiment 3, the optimal culture period from experiment 2 was used for 2D and 3D culture systems. After culture, the oocytes were submitted to IVM. The morphological integrity, antral cavity formation rates, follicular diameter, presence of healthy, grown oocytes (≥110 μm), rates of resumption of meiosis, and estradiol concentrations were evaluated. In experiment 1, the percentage of oocytes that resumed meiosis was higher in oocytes cultured for 30 days (48.84%) than in oocytes cultured for 18 and 24 days (15% and 20.93%, respectively). In experiment 2, the percentage of oocytes that resumed meiosis was significantly higher in oocytes cultured for 30 and 36 days (47.5% and 50%, respectively) than in oocytes cultured for 42 days (20%). The estradiol concentrations on Day 12 of culture were similar for normal and extruded follicles and higher than those observed in degenerate follicles at the end of the culture period. In conclusion, the 36-day culture period resulted in the highest rates of meiosis resumption. In addition, because the loss of follicular integrity affects the patterns of estradiol production, follicular integrity is a good predictor of follicular quality.
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Affiliation(s)
- A F C Pessoa
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Ceará, Brazil.
| | - R M P Rocha
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Ceará, Brazil
| | - I R Brito
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Ceará, Brazil
| | - G M Silva
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Ceará, Brazil
| | - R N Chaves
- Health Center, University of Fortaleza (UNIFOR), Edson Queiroz, Fortaleza, Ceará, Brazil
| | - D M Magalhães-Padilha
- Potiguar University/Laureate International Universities, Lagoa Nova, Natal, Ceará, Brazil
| | - C C Campello
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Ceará, Brazil
| | - A P R Rodrigues
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Ceará, Brazil
| | - D C S Nunes-Pinheiro
- Laboratory of Animal Biochemistry and Immunology Veterinary Faculty, State University of Ceará, Fortaleza, Ceará, Brazil
| | - J R Figueiredo
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Fortaleza, Ceará, Brazil
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