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Bragança GM, Batista RITP, Souza-Fabjan JMG, Alfradique VAP, Arashiro EKN, Pinto PHN, Santos JDR, Camargo LSA, Menchaca A, da Fonseca JF, Brandão FZ. Exogenous progestogens differentially alter gene expression of immature cumulus-oocyte complexes in sheep. Domest Anim Endocrinol 2021; 74:106518. [PMID: 32711283 DOI: 10.1016/j.domaniend.2020.106518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 06/04/2020] [Accepted: 06/24/2020] [Indexed: 11/29/2022]
Abstract
This study evaluated the role of progesterone (P4) and medroxyprogesterone acetate (MAP) on the molecular status of immature cumulus-oocyte complexes (COCs) and the implications for oocyte quality in sheep. The number of viable COCs per ewe and the rate of COCs screened for developmental competence by brilliant cresyl blue positive (BCB+) were similar (P > 0.05), respectively, across treatments (P4: 7.7 ± 0.7 and 4.7 ± 1.2; MAP: 5.7 ± 1.0 and 3.5 ± 2.3; and control: 5.7 ± 1.1 and 3.6 ± 2.4). The COCs' gene expression was altered by exogenous progestogens compared with the control group: markers of steroidogenic pathway (FSH receptor [FSHr], LH receptor [LHr], and estradiol receptor α) and of quality (zygote arrest 1, growth differentiation factor 9, and B-cell lymphoma 2) were in abundance in P4 (P < 0.05). In addition, reelin protein (RELN) was downregulated, and Bcl-2 was upregulated in MAP (P < 0.05). In the P4 vs MAP comparison, FSHr, LHr, and RELN genes were upregulated (P < 0.05) in the P4 group. In conclusion, P4 and MAP promoted dissimilar effects on transcriptome profiling of immature BCB-selected COCs, possibly due to the differences in the chemical structure of progestogens and concentrations of serum P4. Exogenous P4 impacted positively on the profile of genes related to oocyte quality.
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Affiliation(s)
- G M Bragança
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil.
| | - R I T P Batista
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - J M G Souza-Fabjan
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - V A P Alfradique
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - E K N Arashiro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - P H N Pinto
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - J D R Santos
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - L S A Camargo
- Embrapa Gado de Leite, Rua Eugênio do Nascimento, 610, Juiz de Fora, Minas Gerais 36038-330, Brazil
| | - A Menchaca
- Fundacion IRAUy, Cno. Cruz del Sur 2250, Montevideo 12200, Uruguay
| | - J F da Fonseca
- Embrapa Caprinos e Ovinos, Estrada Sobral/Groaíras, km 04, CP 145, Sobral, Ceará 62010-970, Brazil
| | - F Z Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
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Bragança GM, Souza-Fabjan JMG, Ribeiro LS, Brair VL, Côrtes LR, Souza CV, Batista RITP, Fonseca JF, Menchaca A, Brandão FZ. Exogenous progestogen does not affect first-wave follicle populations and oocyte quality during ovarian stimulation with FSH in sheep. Domest Anim Endocrinol 2020; 72:106369. [PMID: 31445776 DOI: 10.1016/j.domaniend.2019.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 05/19/2019] [Accepted: 06/04/2019] [Indexed: 11/20/2022]
Abstract
The effect of short-term administration of medroxyprogesterone acetate (MPA) or natural progesterone (P4) during ovarian stimulation with FSH on oocyte recovery was investigated in Santa Inês ewes. Ewes were treated with an intravaginal sponge containing MPA for 6 d; GnRH was applied 36 h after sponge removal and FSH was given in 3 injections (40, 24, and 16 mg, respectively) every 12 h after (D0, approximate ovulation time). At the first FSH dose, the ewes received either a new MPA sponge (n = 10) or a controlled device for internal release impregnated with P4 (n = 10) or did not receive any device (n = 10). Ovarian dynamics were assessed every 12 h by transrectal ultrasonography from D-3 to D2. Oocytes were recovered by laparoscopic ovum pick-up (LOPU) on D2 and graded by morphologic quality. The number of small, medium, and large follicles at D0 and D2 (ultrasound examinations), number of both follicles aspirated and oocytes recovered at LOPU, recovery rate, and oocyte grade did not differ (P > 0.05) among treatments. Thus, the short-term use of MPA or P4 during ovarian stimulation did not affect the first-wave follicle population or morphologic quality of oocytes. We would suggest that, in this protocol, the use of exogenous progestin is unnecessary.
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Affiliation(s)
- G M Bragança
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil.
| | - J M G Souza-Fabjan
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - L S Ribeiro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - V L Brair
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - L R Côrtes
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - C V Souza
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - R I T P Batista
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - J F Fonseca
- Embrapa Caprinos e Ovinos, Estrada Sobral/Groaíras, km 04, CP 145, Sobral, Ceará CEP 62010-970, Brazil
| | - A Menchaca
- Fundacion IRAUy, Cno. Cruz del Sur, 2250 CP, Montevideo 12200, Uruguay
| | - F Z Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
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