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Dias FCF, Khan MIR, Sirard MA, Adams GP, Singh J. Transcriptome analysis of granulosa cells after conventional vs long FSH-induced superstimulation in cattle. BMC Genomics 2018; 19:258. [PMID: 29661134 PMCID: PMC5902934 DOI: 10.1186/s12864-018-4642-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 04/03/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Prolongation of superstimulatory treatment appears to be associated with a greater superovulatory response and with greater oocyte maturation in cattle. A genome-wide bovine oligo-microarray was used to compare the gene expression of granulosa cells collected from ovarian follicles after differing durations of the growing phase induced by exogenous FSH treatment. Cows were given a conventional (4-day) or long (7-day) superstimulatory treatment (25 mg FSH im at 12-h intervals; n = 6 per group), followed by prostaglandin treatment with last FSH and LH treatment 24 h later. Granulosa cells were harvested 24 h after LH treatment. RESULTS The expression of 416 genes was down-regulated and 615 genes was up-regulated in the long FSH group compared to the conventional FSH group. Quantification by RT-PCR of 7 genes (NTS, PTGS2, PTX3, RGS2, INHBA, CCND2 and LRP8) supported the microarrays data. Multigene bioinformatic analysis indicates that markers of fertility and follicle maturity were up-regulated in the long FSH group. CONCLUSION Using the large gene expression dataset generated by the genomic analysis and our previous associated with the growth phase and gene expression changes post LH, we can conclude that a prolonged FSH-induced growing phase is associated with transcriptomic characteristics of greater follicular maturity and may therefore be more appropriate for optimizing the superovulatory response and developmental competence of oocytes in cattle.
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Affiliation(s)
- F C F Dias
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada
| | - M I R Khan
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada.,Department of Theriogenology, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan
| | - M A Sirard
- Departement des Sciences Animales, Centre de Recherche en Biologie de la Reproduction, Universite' Laval, Sainte-Foy, Quebec, G1K 7P4, Canada
| | - G P Adams
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada
| | - J Singh
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada.
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Dadarwal D, Dias FCF, Adams GP, Singh J. Effect of follicular aging on ATP content and mitochondria distribution in bovine oocytes. Theriogenology 2016; 89:348-358. [PMID: 27793457 DOI: 10.1016/j.theriogenology.2016.09.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 09/08/2016] [Accepted: 09/23/2016] [Indexed: 11/24/2022]
Abstract
Hereford heifers were assigned randomly to three superstimulation groups and given FSH for 4 days in the short FSH group (n = 5) and FSH starvation group, (n = 5) or for 7 days in the long FSH group (n = 4). In vivo oocyte maturation was induced with LH given 12 hours after the last FSH treatment in short and long FSH groups and 84 hours after the last FSH treatment in the FSH starvation group. The ovaries were removed by colpotomy 18 to 20 hours after LH treatment to aspirate cumulus-oocyte complexes (COCs) from follicles 8 mm or greater. Cumulus-oocyte complexes were graded morphologically, and oocytes were processed for either mitochondrial staining or for ATP assay. Collection efficiency was similar among treatment groups, but a greater proportion of COCs were expanded (P < 0.01) and oocyte ATP content of the expanded COC tended to be greater (P < 0.09) in the long FSH group than other two groups. Oocytes in the FSH starvation group had a greater proportion (P = 0.01) of mitochondrial clusters (i.e., fewer scattered individual mitochondria). Individual mitochondria and mitochondrial clusters in oocytes from the long FSH and FSH starvation groups had twice the relative staining intensity (P < 0.01) compared to oocytes from the short FSH group. In summary, the long FSH superstimulation protocol yielded a greater proportion of expanded COCs that had oocytes with a scattered mitochondrial population and a greater ATP content than other two protocols. FSH starvation of 84 hours yielded a high proportion of grade 4 COCs characterized by a greater proportion of mitochondrial clusters within the oocyte.
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Affiliation(s)
- Dinesh Dadarwal
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Fernanda C F Dias
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Gregg P Adams
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Jaswant Singh
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
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Stevenson J, Lamb G. Contrasting effects of progesterone on fertility of dairy and beef cows. J Dairy Sci 2016; 99:5951-5964. [DOI: 10.3168/jds.2015-10130] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 12/26/2015] [Indexed: 11/19/2022]
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Stevenson JS, Hill SL, Bridges GA, Larson JE, Lamb GC. Progesterone status, parity, body condition, and days postpartum before estrus or ovulation synchronization in suckled beef cattle influence artificial insemination pregnancy outcomes1. J Anim Sci 2015; 93:2111-23. [DOI: 10.2527/jas.2014-8391] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Dias FCF, Khan MIR, Adams GP, Sirard MA, Singh J. Granulosa cell function and oocyte competence: Super-follicles, super-moms and super-stimulation in cattle. Anim Reprod Sci 2014; 149:80-9. [PMID: 25107564 DOI: 10.1016/j.anireprosci.2014.07.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 07/13/2014] [Accepted: 07/14/2014] [Indexed: 11/29/2022]
Abstract
The review presents an overview of studies that examined the effects of follicular aging and maternal aging in the bovine model. The first of three main sections is a discussion of the developmental competence of oocytes from (1) the ovulatory follicle of 2-wave and 3-wave estrous cycles, (2) dominant follicles that develop under high or low LH pulse frequency, and (3) natural versus FSH-stimulated ovulatory follicles. The second section highlights the effects of maternal aging. Maternal aging in cattle is associated with (1) elevated circulating FSH concentrations, (2) reduced response to superstimulatory treatment, and (3) markedly decreased early embryonic development in cows >12 year of age. The third and final section on superstimulation protocols addresses the effects of the duration of FSH stimulation and withdrawal (i.e., FSH "starvation" or "coasting") on oocyte competence. Ovarian superstimulation for 4 days altered the expression of genes related to angiogenesis, and activated oxidative stress-response genes. Extending the duration of FSH stimulation from 4 to 7 days resulted in a greater and more synchronous ovulatory response and optimal oocyte maturation. The highest rates of blastocyst development in vitro were obtained when FSH support was discontinued for 44 to 68h and granulosa cell SMAD7 mRNA was predictive of this period. Longer periods of FSH starvation resulted in a loss of oocyte competence or ovulatory capability. By extending the bovine model to the transcriptome level, new approaches and treatments may be devised to resolve subfertility in women and animals.
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Affiliation(s)
- F C F Dias
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, Canada S7N 5B4
| | - M I R Khan
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, Canada S7N 5B4
| | - G P Adams
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, Canada S7N 5B4
| | - M A Sirard
- Centre de Recherche en Biologie de la Reproduction, INAF, Université Laval, Québec, QC, Canada G1V 0A6
| | - J Singh
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, Canada S7N 5B4.
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Evaluation of the Cryotech Vitrification Kit for bovine embryos. Cryobiology 2013; 67:391-3. [DOI: 10.1016/j.cryobiol.2013.08.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 08/15/2013] [Accepted: 08/19/2013] [Indexed: 11/23/2022]
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Dias F, Dadarwal D, Adams G, Mrigank H, Mapletoft R, Singh J. Length of the follicular growing phase and oocyte competence in beef heifers. Theriogenology 2013; 79:1177-1183.e1. [DOI: 10.1016/j.theriogenology.2013.02.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 02/16/2013] [Accepted: 02/17/2013] [Indexed: 10/27/2022]
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Giordano J, Edwards J, Di Croce F, Roper D, Rohrbach N, Saxton A, Schuenemann G, Prado T, Schrick F. Ovulatory follicle dysfunction in lactating dairy cows after treatment with Folltropin-V at the onset of luteolysis. Theriogenology 2013; 79:1210-7. [DOI: 10.1016/j.theriogenology.2013.02.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 02/15/2013] [Accepted: 02/16/2013] [Indexed: 10/27/2022]
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Dadarwal D, Mapletoft R, Adams G, Pfeifer L, Creelman C, Singh J. Effect of progesterone concentration and duration of proestrus on fertility in beef cattle after fixed-time artificial insemination. Theriogenology 2013; 79:859-66. [DOI: 10.1016/j.theriogenology.2013.01.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 01/03/2013] [Accepted: 01/03/2013] [Indexed: 11/30/2022]
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Lengthening the superstimulatory treatment protocol increases ovarian response and number of transferable embryos in beef cows. Theriogenology 2012; 78:353-60. [DOI: 10.1016/j.theriogenology.2012.02.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Revised: 02/03/2012] [Accepted: 02/04/2012] [Indexed: 11/19/2022]
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Adams GP, Singh J, Baerwald AR. Large animal models for the study of ovarian follicular dynamics in women. Theriogenology 2012; 78:1733-48. [PMID: 22626769 DOI: 10.1016/j.theriogenology.2012.04.010] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 04/11/2012] [Accepted: 04/17/2012] [Indexed: 02/05/2023]
Abstract
Initial studies of the ovaries were based on postmortem anatomic descriptions, followed by histologic and endocrine approaches. The introduction of high-resolution ultrasonography provided a long-awaited tool to image the reproductive tissues in situ in both animals and humans. Critical studies of the characteristics and control of ovarian follicular and luteal dynamics in nonhuman primates, rodents, and domestic farm animals have involved frequent (i.e., daily or multiple times a day) blood sampling and ultrasonography. Studies of this nature in women are difficult, and often unethical to conduct. Differences in antral folliculogenesis between humans and animals appear to be more in detail rather than in essence, and may reflect differences in intrinsic physiology or merely differences in our ability to detect changes in a given species. In women, the presence of endometrial shedding and symmetric luteal and follicular phases are different from that observed during the estrous cycles of domestic farm animals but despite these differences, general similarities in antral follicular dynamics exist. A continuous pattern of antral follicle development was originally proposed in domestic livestock species; however, the use of frequent serial ultrasonography and simultaneous endocrine profiling in these animal species has resulted in a broad understanding of follicular wave dynamics. Follicular waves have now been described in every species in which this approach has been used, including humans. The relatively large diameters of antral follicles in cows and mares, compared with monkeys, sheep, and rodents provide greater feasibility for characterizing antral follicular dynamics ultrasonographically. While the use of large animal models has increased our understanding of ovarian function and provides the hypothetical basis for studies in women, differences in vocabulary, culture, and research methodologies has hampered knowledge translation. These differences represent a systemic impediment to a broad understanding of ovarian function and limits progress and innovation in the development of safer and more efficacious treatments for infertility and contraception.
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Affiliation(s)
- G P Adams
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
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