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Alfradique VAP, Alves SVP, Netto DLS, Machado AF, Penitente-Filho JM, da Silva W, Brandão FZ, Lopes MS, Guimarães SEF. The effect of age and FSH stimulation on the ovarian follicular response, nuclear maturation, and gene expression of cumulus-oocyte complexes in prepubertal gilts. Theriogenology 2023; 199:57-68. [PMID: 36696770 DOI: 10.1016/j.theriogenology.2023.01.015] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 01/14/2023] [Accepted: 01/16/2023] [Indexed: 01/19/2023]
Abstract
This study investigated the effects of age and FSH treatment on the ovarian response, follicular fluid (FF) biochemical composition, nuclear maturation, and molecular profile of cumulus-oocytes complexes (COCs) recovered from prepubertal gilts. Thirty-five prepubertal gilts were separated according to age [140 (n = 20) or 160 (n = 15) days], and within each age, the gilts were allotted to receive either 100 mg of FSH [treated; G140+FSH (n = 10) and G160+FSH (n = 7)] or saline solution [control; G140+control (n = 10) and G160+control (n = 8)]. Thus, four experimental groups were included in this study. In the FSH-treated gilts, the percentage of medium follicles increased (P < 0.0001) in the same proportion with which the percentage of small follicles decreased (P < 0.0001). In addition, the glucose concentration in the FF obtained from medium follicles increased (P < 0.05), while that of triglycerides decreased (P < 0.05) in the FSH-treated gilts. The FSH stimulation also improved (P < 0.05) the number of grade I COCs obtained from medium follicles and the meiotic maturation and BCB + rates. FSH treatment only upregulated (P < 0.05) HMGCR expression in immature COCs from prepubertal gilts. The metaphase II and BCB + rates, FF glucose and plasma IGF-1 levels were greater (P < 0.05) in prepubertal gilts at 160 than at 140 days of age. Age had no effect (P > 0.05) on the transcript abundance of the target genes in immature COCs. Hence, oocytes obtained from 140-day-old prepubertal gilts appeared less meiotically competent than those of 160-day-old prepubertal gilts. Our study suggests a possible strategy of using FSH treatment to improve oocyte quantity, quality, and nuclear maturation in 140 and 160-day-old prepubertal gilts.
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Affiliation(s)
- Vivian Angélico Pereira Alfradique
- Departamento de Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil.
| | - Saullo Vinícius Pereira Alves
- Departamento de Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - Domingos Lollobrigida Souza Netto
- Departamento de Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - Andréia Ferreira Machado
- Departamento de Zootecnia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - Jurandy Mauro Penitente-Filho
- Departamento de Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - Walmir da Silva
- Departamento de Zootecnia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - Felipe Zandonadi Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Marcos Soares Lopes
- Topigs Norsvin Brasil, Rua Visconde do Rio Branco, 1310, CEP 80420-210, Curitiba, PR, Brazil
| | - Simone Eliza Facioni Guimarães
- Departamento de Zootecnia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil.
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Alfradique VAP, Netto DLS, Alves SVP, Machado AF, Novaes CM, Penitente-Filho JM, Machado-Neves M, Lopes MS, Guimarães SEF. The impact of FSH stimulation and age on the ovarian and uterine traits and histomorphometry of prepubertal gilts. Domest Anim Endocrinol 2023; 83:106786. [PMID: 36848729 DOI: 10.1016/j.domaniend.2023.106786] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 01/14/2023] [Accepted: 01/19/2023] [Indexed: 01/28/2023]
Abstract
This study investigated the effect of age and follicle stimulating hormone (FSH) treatment on the estradiol (E2) plasma concentration, ovarian follicle development, endometrial histomorphometry, and ultrasonographic parameters of the ovaries and uterus in prepubertal gilts. Thirty-five prepubertal gilts were grouped according to age (140 or 160 d), and within each age, gilts were allotted to receive 100 mg of FSH (treated; G140 + FSH [n = 10] and G160 + FSH [n = 7]) or saline solution (control; G140 + control [n = 10] and G160 + control [n = 8]). The total dose of FSH was divided into 6 similar doses administered every 8 h (days 0-2). Before and after FSH treatment, blood sample was collected, and transabdominal scanning of the ovaries and uterus was performed. Twenty-four hours after the last FSH injection, the gilts were slaughtered and their ovaries and uterus were processed for histological and histomorphometric analysis. The histomorphometric parameters of the uterus differed (P < 0.05) between prepubertal gilts at 160 d and 140 d of age. Moreover, changes (P < 0.05) in uterine and ovarian ultrasound images occurred between 140 and 160 d of age. Age and FSH treatment did not affect (P > 0.05) E2 plasma concentrations. Follicle stimulating hormone treatment did not affect (P > 0.05) the early stage of folliculogenesis in the prepubertal gilts; however, the number of early atretic follicles decreased (P < 0.05) after the FSH treatment. Follicle stimulating hormone administration increased (P < 0.05) the number of medium follicles and decreased (P < 0.05) the number of small follicles in 140 and 160 d old gilts. In the endometrium, luminal/glandular epithelium height and glandular diameter increased (P < 0.05) after FSH treatment. Thus, injections of 100 mg of FSH stimulate the endometrium epithelium and induce follicular growth to a medium follicle size without affecting the preantral stages in prepubertal gilts; also, the uterine macroscopic morphometry does not change from 140 to 160 d of age.
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Affiliation(s)
- V A P Alfradique
- Departamento de Veterinária, Universidade Federal de Viçosa, Av Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil.
| | - D L Souza Netto
- Departamento de Veterinária, Universidade Federal de Viçosa, Av Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - S V P Alves
- Departamento de Veterinária, Universidade Federal de Viçosa, Av Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - A F Machado
- Departamento de Zootecnia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - C M Novaes
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - J M Penitente-Filho
- Departamento de Veterinária, Universidade Federal de Viçosa, Av Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - M Machado-Neves
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil
| | - M S Lopes
- Topigs Norsvin - Brasil, Curitiba, PR, Brazil
| | - S E F Guimarães
- Departamento de Zootecnia, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, Campus Universitário, CEP 36570-900, Viçosa, MG, Brazil.
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de Araujo GR, de Paula TAR, Deco-Souza TD, Garay RDM, Letícia Bergo C, Csermak-Júnior AC, da Silva LC, Alves SVP. Ocelot and oncilla spermatozoa can bind hen egg perivitelline membranes. Anim Reprod Sci 2015; 163:56-62. [DOI: 10.1016/j.anireprosci.2015.09.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 09/29/2015] [Accepted: 09/30/2015] [Indexed: 10/22/2022]
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