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Manta MW, da Silva EP, Feltrin SR, Prante AL, Aires KDV, de Andrade LG, da Silva AP, Amaral CDS, Wink LM, Portela VM, Antoniazzi AQ. Human Chorionic Gonadotrophin (hCG) induces changes in IFN-pathway and Interferon-Stimulated Genes (ISGs) on the bovine endometrium at Day 18 of pregnancy. Anim Reprod 2024; 21:e20230130. [PMID: 38562608 PMCID: PMC10984569 DOI: 10.1590/1984-3143-ar2023-0130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 02/20/2024] [Indexed: 04/04/2024] Open
Abstract
We hypothesized that the hCG modulates the expression of IFNT-pathway and ISGs in bovine endometrium during early pregnancy. The aim of the current study is to evaluate the effect of hCG on IFNT-pathway signals and ISGs expression in endometrial cells. For this, 29 non-lactating cross-bread cows were used in the study and submitted to a 9-day fixed-time artificial insemination (FTAI) protocol. The day of the AI was considered Day 0 (D0), and five days (D5) after the FTAI, the cows were allocated into two groups: Control and hCG group, when a hCG group received a single dose of 2.500UI of hCG. On day 18 after FTAI (D18) cows were slaughtered and endometrial tissue samples were collected. There was no difference between the embryo recovery rate of the cows in C compared to the hCG. The hCG group increased the accessory corpus luteum formation rate. The hCG resulted in greater serum progesterone concentration in the hCG group compared to the C on Day 14. Only the expression of IFNAR2 and STAT1 were upregulated on pregnant cows of the hCG group compared to the C group. The pathway genes (JAK1, STAT2, and IRF9) were not regulated. The mRNA abundance of ISG15, MX1, MX2, and OAS1 was upregulated in pregnant cows for hCG group, compared to C group. The results show that the administration of hCG, 5 days after AI, in addition to increasing the serum progesterone, modulates the expression of IFNT-pathway and ISGs on bovine endometrium on Day 18 of pregnancy.
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Affiliation(s)
- Manuela Wolker Manta
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Eduardo Pradebon da Silva
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Suzana Rossato Feltrin
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Amanda Luiza Prante
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Karine de Vargas Aires
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Leonardo Guedes de Andrade
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Ana Paula da Silva
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Carolina dos Santos Amaral
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | | | - Valério Marques Portela
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Alfredo Quites Antoniazzi
- Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
- Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
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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] [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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Mohammadi A, Alijani S, Rafat S, Abdollahi-Arpanahi R. Single-step genome-wide association study and candidate genes networks affecting reproductive traits in Iranian Holstein cattle. Livest Sci 2022. [DOI: 10.1016/j.livsci.2022.104971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Factors influencing embryo quantity and quality in donor cows from Latvian Blue, Latvian Brown, and Danish Red breeds at risk in Latvia. Livest Sci 2021. [DOI: 10.1016/j.livsci.2021.104739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bunma T, Kanjanaruch C, Kogram N, Uriyapongson S, Khanthusaeng V, Navanukraw C. Effects of FSH treatment and withdrawal during proestrus on uterine proliferation and steroid hormone receptor expression in beef heifers. Anim Sci J 2021; 92:e13621. [PMID: 34448516 DOI: 10.1111/asj.13621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/12/2021] [Accepted: 07/20/2021] [Indexed: 11/29/2022]
Abstract
To determine the effects of Follicle Stimulating Hormone (FSH) treatment and subsequent withdrawal on uterine proliferation and estrogen receptor (ESR), Brahman crossbred heifers (n = 12) were twice daily injected with FSH (4, 3, and 2 mg/injection) on Days 17-19 of the estrous cycle (FSH 3 days) and (4 and 3 mg/injection) on Days 17-18 (FSH 2 days) and withdrawal with saline on Day 19 and (4 mg/injection) on Day 17 (FSH 1 day) and withdrawal with saline on Days 18-19. Uterine tissue was subjectively collected on Day 20 and microscopically classified to four regions: endometrial stroma (ES), surface endometrial gland (EG), deep endometrial gland (DG), and myometrium (Myo). The cell proliferation marker, Ki-67, was quantified as labeling index (LI) in uterine regions, and tissues were immunostained to detect ESR2 followed by image analysis. The LI of ES, EG, and DG was greater (P = 0.0018, P = 0.0005, and P = 0.0103; respectively) in heifers received FSH for 3 days. The expression of ESR2 protein on ES and EG was greatest (P < 0.0001 and P = 0.0036, respectively) in FSH 3 days-treated group. Thus, FSH administration during proestrus stimulates uterine cell proliferation, and ESR2 expressions are affected by FSH during proestrus and differentially distributed in the uterine regions.
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Affiliation(s)
- Thanya Bunma
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
| | - Chutikun Kanjanaruch
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
| | - Nattawut Kogram
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
| | - Suthipong Uriyapongson
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
| | - Vilaivan Khanthusaeng
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
| | - Chainarong Navanukraw
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand.,Center of Excellence on Agricultural Biotechnology: (AG-BIO/PERDO-CHE), Bangkok, Thailand
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Gad A, Sánchez JM, Browne JA, Nemcova L, Laurincik J, Prochazka R, Lonergan P. Plasma extracellular vesicle miRNAs as potential biomarkers of superstimulatory response in cattle. Sci Rep 2020; 10:19130. [PMID: 33154526 PMCID: PMC7645755 DOI: 10.1038/s41598-020-76152-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 10/13/2020] [Indexed: 02/07/2023] Open
Abstract
The ability to predict superstimulatory response would be a beneficial tool in assisted reproduction. Using small RNAseq technology, we profiled extracellular vesicle microRNA (EV-miRNA) abundance in the blood plasma of heifers exhibiting variable responses to superstimulation. Estrous synchronized crossbred beef heifers (n = 25) were superstimulated and blood samples were collected from each heifer on Day 7 of consecutive unstimulated (U) and superstimulated (S) cycles. A subset of high (H) and low (L) responders was selected depending on their response to superstimulation and EV-miRNA profiles were analysed at both time-points in each heifer. Approximately 200 known miRNAs were detected in each sample with 144 commonly detected in all samples. A total of 12 and 14 miRNAs were dysregulated in UH vs. UL and in SH vs. SL heifers, respectively. Interestingly, miR-206 and miR-6517 exhibited the same differential expression pattern in H compared to L heifers both before and after superstimulation. Pathway analysis indicated that circadian rhythm and signaling pathways were among the top pathways enriched with genes targeted by dysregulated miRNAs in H vs. L responding heifers. In conclusion, heifers with divergent ovarian responses exhibited differential expression of plasma EV-miRNAs which may be used as a potential biomarker to predict superstimulation response.
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Affiliation(s)
- Ahmed Gad
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Liběchov, Czech Republic.,Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - José María Sánchez
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - John A Browne
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - Lucie Nemcova
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Liběchov, Czech Republic
| | - Jozef Laurincik
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Liběchov, Czech Republic.,Constantine the Philosopher University in Nitra, Nitra, Slovakia
| | - Radek Prochazka
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Liběchov, Czech Republic
| | - Pat Lonergan
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland.
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Hansen PJ. The incompletely fulfilled promise of embryo transfer in cattle-why aren't pregnancy rates greater and what can we do about it? J Anim Sci 2020; 98:skaa288. [PMID: 33141879 PMCID: PMC7608916 DOI: 10.1093/jas/skaa288] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/27/2020] [Indexed: 12/11/2022] Open
Abstract
Typically, bovine embryos are transferred into recipient females about day 7 after estrus or anticipated ovulation, when the embryo has reached the blastocyst stage of development. All the biological and technical causes for failure of a female to produce a blastocyst 7 d after natural or artificial insemination (AI) are avoided when a blastocyst-stage embryo is transferred into the female. It is reasonable to expect, therefore, that pregnancy success would be higher for embryo transfer (ET) recipients than for inseminated females. This expectation is not usually met unless the recipient is exposed to heat stress or is classified as a repeat-breeder female. Rather, pregnancy success is generally similar for ET and AI. The implication is that either one or more of the technical aspects of ET have not yet been optimized or that underlying female fertility that causes an embryo to die before day 7 also causes it to die later in pregnancy. Improvements in pregnancy success after ET will depend upon making a better embryo, improving uterine receptivity, and forging new tools for production and transfer of embryos. Key to accelerating progress in improving pregnancy rates will be the identification of phenotypes or phenomes that allow the prediction of embryo competence for survival and maternal capacity to support embryonic development.
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Affiliation(s)
- Peter J Hansen
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, FL
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Abstract
Development of assisted reproductive technologies has been driven by the goals of reducing the incidence of infertility, increasing the number of offspring from genetically elite animals, facilitating genetic manipulation, aiding preservation and long-distance movement of germplasm, and generating research material. Superovulation is associated with reduced fertilization rate and alterations in endometrial function. In vitro production of embryos can have a variety of consequences. Most embryos produced in vitro are capable of establishing pregnancy and developing into healthy neonatal animals. However, in vitro production is associated with reduced ability to develop to the blastocyst stage, increased incidence of failure to establish pregnancy, placental dysfunction, and altered fetal development. Changes in the developmental program mean that some consequences of being produced in vitro can extend into adult life. Reduced competence of the embryo produced in vitro to develop to the blastocyst stage is caused largely by disruption of events during oocyte maturation and fertilization. Conditions during embryo culture can affect embryo freezability and competence to establish pregnancy after transfer. Culture conditions, including actions of embryokines, can also affect the postnatal phenotype of the resultant progeny.
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Affiliation(s)
- Peter J Hansen
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program and Genetics Institute, University of Florida, Gainesville, Florida 32611-0910, USA;
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Grazul-Bilska AT, Dorsam ST, Reyaz A, Valkov V, Bass CS, Kaminski SL, Redmer DA. Follicle-stimulating hormone receptors expression in ovine corpora lutea during luteal phase: effect of nutritional plane and follicle-stimulating hormone treatment. Domest Anim Endocrinol 2020; 71:106391. [PMID: 31731250 DOI: 10.1016/j.domaniend.2019.106391] [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: 04/29/2019] [Revised: 08/20/2019] [Accepted: 09/02/2019] [Indexed: 11/18/2022]
Abstract
Corpus luteum (CL), a transient endocrine gland critical for reproductive cyclicity and pregnancy maintenance, is controlled by numerous regulatory factors. Although LH is widely recognized as the major regulator, other factors may also affect luteal functions. It has been demonstrated that FSH receptors (FSHR) are expressed not only in ovarian follicles but also in other tissues within the reproductive tract, including the CL. To evaluate FSHR expression in nontreated (nonsuperovulated; experiment 1) or FSH-treated (superovulated; experiment 2) sheep fed a control (C; maintenance), excess (O; 2 × C), or restricted (U; 0.6 × C) diet, CL were collected at the early, mid and/or late luteal phases (n = 5-7 per group). Protein and messenger RNA (mRNA) expression of FSHR were detected in the CL from all groups using immunohistochemistry followed by image analysis and quantitative RT-PCR, respectively. Follicle-stimulating hormone receptor was immunolocalized to steroidogenic small and large and nonsteroidogenic luteal cells. In both experiments, FSHR protein expression was not affected by stage of luteal development or diet. In experiment 1, expression of mRNA for all FSHR variants was greater (P <0.02 to 0.0003) at the late phase than mid or early luteal phase, and in experiment 2, it was greater (P < 0.001) at the mid than early luteal phase. Plane of nutrition did not affect FSHR mRNA expression. Comparison of FSH-treated with nontreated ewes demonstrated that FSH increased FSHR protein expression by 1.5- to 2-fold (P < 0.0001) in all groups, and mRNA expression by 7- to 30-fold (P < 0.001) for (1) FSHR-1 in all groups except U at the early luteal phase, (2) FSHR-2 in C, O, and U at the mid-phase, but not early luteal phase, and (3) FSHR-3 in U at the mid-luteal phase. Our data demonstrate that (1) FSHRs are expressed in ovine CL at several stages of luteal development, (2) FSHR protein expression does not change during the luteal phase and is not affected by diet, (3) FSHR mRNA expression not only depends on the stage of the estrous cycle but also not affected by diet in nonsuperovulated or superovulated ewes, and (4) in vivo FSH treatment enhanced FSHR protein and/or mRNA expression in the CL depending on diet and phase of the estrous cycle. Presence of FSHR in the CL indicates a regulatory role of FSH in luteal function in sheep. As very little is known about the possible role of FSH and FSHR in luteal functions, further studies should be undertaken to elucidate the endocrine, molecular, and cellular mechanisms of FSH effects on the CL.
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Affiliation(s)
- A T Grazul-Bilska
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58105, USA.
| | - S T Dorsam
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - A Reyaz
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - V Valkov
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - C S Bass
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - S L Kaminski
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - D A Redmer
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58105, USA
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Donadeu FX, Sanchez JM, Mohammed BT, Ioannidis J, Stenhouse C, Maioli MA, Esteves CL, Lonergan P. Relationships between size, steroidogenesis and miRNA expression of the bovine corpus luteum. Theriogenology 2019; 145:226-230. [PMID: 31748175 DOI: 10.1016/j.theriogenology.2019.10.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 10/12/2019] [Accepted: 10/28/2019] [Indexed: 01/13/2023]
Abstract
In a previous study, a subset of miRNAs were identified the expression of which increases substantially during the follicle-luteal transition in cattle. Here, we investigated the functional involvement of some of these miRNAs (miR-96, miR-182, miR-132, miR-21, miR-378) by determining whether there is an association in vivo between their expression in the corpus luteum (CL), CL size and progesterone production. The two largest and two smallest CL were collected from 12 donor beef heifers on Day 7 following ovarian super-stimulation (Day 0 = 28-32 h after first standing to be mounted). Additionally, the CL and a plasma sample were collected from 29 recipient heifers on Day 15. Luteal expression of miRNAs and mRNAs, and plasma progesterone concentrations were quantified by RT-qPCR and RIA, respectively. There were no differences in the mean expression of any miRNAs examined or the steroidogenic enzymes, STAR or CYP11A1, between the largest and smallest CL in donor heifers (P > 0.1). In addition, there were no significant correlations of luteal volume or weight with any miRNA, CYP11A1 or STAR in donor heifers. However, a correlation (r ≥ 0.5, P ≤ 0.001) existed between the transcript levels of CYP11A1 and STAR in the CL, as well as between each of those and miR-182 levels. In addition, CYP11A1 abundance was moderately correlated (r ≤ 0.4, P < 0.05) with each of miR-96 and miR-378. In recipient heifers, progesterone levels were moderately correlated with luteal weight (r = 0.41, P = 0.03) but not with the expression of any miRNA, CYP11A1 or STAR (P > 0.1). Moreover, luteal CYP11A1 and STAR were correlated (r = 0.6, P ≤ 0.001) with miR-182 as well as with each other, consistent with data in donor heifers. Finally, both CYP11A1 and STAR were moderately correlated (r ≤ 0.5) with miR-132 and, in the case of STAR, with miR-378. In summary, there was no association between either luteal weight/volume or plasma progesterone concentrations and any of the miRNAs analysed in donor and recipient heifers. However, CYP11A1 and STAR transcript levels were significantly correlated with several miRNAs, most notably miR-182, as well as with each other, in luteal tissues from both donor and recipient heifers. This finding confirms results of previous in vitro studies and, importantly, provides the first in vivo evidence of a role of the miR-183-96-182 cluster in regulating luteal steroidogenesis.
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Affiliation(s)
- F X Donadeu
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.
| | - J M Sanchez
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, D04 N2E5, Ireland
| | - B T Mohammed
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK; College of Veterinary Medicine, University of Duhok, Kurdistan region, Iraq
| | - J Ioannidis
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - C Stenhouse
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - M A Maioli
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - C L Esteves
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - P Lonergan
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, D04 N2E5, Ireland
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Fontes PK, Razza EM, Pupulim AGR, Barros CM, de Souza Castilho AC. Equine chorionic gonadotropin increases estradiol levels in the bovine oviduct and drives the transcription of genes related to fertilization in superstimulated cows. Mol Reprod Dev 2019; 86:1582-1591. [PMID: 31353672 DOI: 10.1002/mrd.23243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 06/30/2019] [Indexed: 11/05/2022]
Abstract
In the bovine oviduct, estradiol (E2) stimulates secretion and cell proliferation, whereas progesterone (P4) suppresses them. In this study, we have evaluated the effect of two superstimulatory protocols (follicle-stimulating hormone [FSH] or FSH combined with equine chorionic gonadotropin [eCG]) on the oviductal levels of E2 and P4 and its outcome on oviductal cells. Compared with the control group (a single pre-ovulatory follicle), we have observed that the cows submitted to FSH/eCG treatment showed a higher concentration of E2 in the oviduct tissue, together with a higher abundance of messenger RNA encoding steroid receptors (ESR1 and progesterone receptor), and genes linked to gamete interactions and regulation of polyspermy (oviduct-specific glycoprotein 1, heat-shock protein family A member 5, α-l-fucosidase 1 [FUCA1], and FUCA2) in the infundibulum and ampulla segments of the oviduct. However, we did not observe any modulation of gene expression in the isthmus segment. Even though the FSH protocol upregulated some of the genes analyzed, we may infer that the steady effect of FSH combined with eCG on oviduct regulation might benefit fertilization and may potentially increase pregnancy rates.
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Affiliation(s)
- Patricia K Fontes
- Departament of Pharmacology, Institute of Biosciences, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Eduardo M Razza
- Departament of Pharmacology, Institute of Biosciences, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | | | - Ciro M Barros
- Departament of Pharmacology, Institute of Biosciences, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
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Moore SG, Cummins SB, Mamo S, Lonergan P, Fair T, Butler ST. Genetic merit for fertility traits in Holstein cows: VI. Oocyte developmental competence and embryo development. J Dairy Sci 2019; 102:4651-4661. [PMID: 30852009 DOI: 10.3168/jds.2018-15813] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/10/2019] [Indexed: 11/19/2022]
Abstract
The hypothesis of this study was that cows with good genetic merit for fertility traits (Fert+) would produce oocytes and embryos of greater quality than cows with poor genetic merit for fertility traits (Fert-) and that mRNA expression of candidate genes would reflect the observed differences in quality. The aim of the study, therefore, was to determine the effect of genetic merit for fertility traits on morphological classification and mRNA abundance of key genes in immature oocytes and cumulus cells following ovum pick-up and in embryos following superovulation, artificial insemination (AI), and uterine flushing. In experiment 1, 17 Fert+ and 11 Fert- cows, ranging from 54 to 84 d in milk, were submitted to ovum pick-up on 4 occasions during a 2-wk period. Recovered cumulus-oocyte complexes (COC) were morphologically graded. Oocytes and cumulus cells were separated, and mRNA abundance of genes associated with oocyte developmental competence was measured. There was no effect of genotype on the distribution of COC grades or on the mRNA abundance of the candidate genes in grade 1 COC. In experiment 2, 20 Fert+ and 19 Fert- cows, ranging from 71 to 189 d in milk, were submitted to superovulation and AI. The uteri of cows that responded to the superovulation protocol (17 Fert+ and 16 Fert- cows) were nonsurgically flushed 7 d postovulation. Recovered embryos were morphologically graded, and mRNA abundance of genes associated with embryo development was measured in grade 1 blastocysts. The response to the superovulation protocol was assessed by counting the number of codominant follicles on the day of AI, which was similar for both genotypes (22.0 ± 9.7 and 19.8 ± 8.2 for Fert+ and Fert- cows, respectively). There was no effect of genotype on the proportion of transferable embryos recovered or on the mRNA abundance of the candidate genes tested in the grade 1 blastocysts. Of the total embryos classified as blastocysts, however, the Fert+ cows tended to have a greater proportion of grade 1 blastocysts compared with Fert- cows (90% vs. 64%, respectively). In conclusion, genetic merit for fertility traits had a no effect on mRNA abundance of the candidate genes that were examined in immature oocytes and cumulus cells and in embryos recovered after superovulation. The observed differences in morphological blastocyst quality following superovulation would suggest that the superior reproductive performance of Fert+ cows could arise during the later stages of embryo development from d 7 until maternal recognition of pregnancy.
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Affiliation(s)
- S G Moore
- Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland P61 P302
| | - S B Cummins
- Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland P61 P302; School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland D04 N2E5
| | - S Mamo
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland D04 N2E5
| | - P Lonergan
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland D04 N2E5
| | - T Fair
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland D04 N2E5
| | - S T Butler
- Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland P61 P302.
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Senapati S, Wang F, Ord T, Coutifaris C, Feng R, Mainigi M. Superovulation alters the expression of endometrial genes critical to tissue remodeling and placentation. J Assist Reprod Genet 2018; 35:1799-1808. [PMID: 29959621 PMCID: PMC6150905 DOI: 10.1007/s10815-018-1244-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 06/14/2018] [Indexed: 12/11/2022] Open
Abstract
PURPOSE Epidemiologic data suggest that in vitro fertilization (IVF) is associated with an increased risk of disorders of placentation including preeclampsia and fetal growth restriction. Specifically, studies have demonstrated that singleton pregnancies conceived following a fresh embryo transfer are at an increased risk of delivering an infant with low birth weight compared to those conceived following a frozen embryo transfer. The mechanism responsible for this association remains unclear. Procedures utilized in IVF have also been linked with epigenetic changes and gene expression changes in both fetal and maternal tissues. Data suggest that modifications in the maternal endometrium can lead to disordered trophoblast invasion and placentation. This study examines the effect of ovarian stimulation on endometrial gene expression and DNA methylation during the window of implantation to examine potential pathways playing a role in the adverse outcomes associated with IVF. METHODS Endometrial biopsies were obtained from oocyte donors and age-matched naturally cycling women 11 days following oocyte retrieval in donors or 12 days following luteinizing hormone (LH) surge in naturally cycling women. Global gene expression was analyzed via Affymetrix Human Gene 1.1 ST array and confirmed with RT-qPCR. DNA methylation was assessed with the Infinium DNA methylation 450 K BeadChip. RESULTS Analysis of endometrial gene expression from 23 women (11 oocyte donors and 12 controls) demonstrated 165 genes with a greater than twofold change in expression between donors and controls. While there were 785 genes with significant differential methylation in the endometrium of donors when compared with control subjects, none of the genes with altered expression showed significant changes in DNA methylation. Analysis of the differentially expressed genes showed enrichment for genes involved in endometrial remodeling including PLAT, HSPE2, MMP2, and TIMP1. Validation studies using RT-qPCR found a 73% reduction in expression of heparanase 2 (HSPE2) an enzyme associated with both angiogenesis and cell invasion, a greater than twofold increase in tissue-type plasminogen activator (PLAT), a serine protease participating in matrix degradation, and a 70% increase in MMP2, a gelatinase involved in collagen and fibronectin breakdown. CONCLUSIONS Superovulation alters expression of genes critical to endometrial remodeling during early implantation. Such changes could lead to altered trophoblast migration and impaired endovascular invasion. These findings offer a potential mechanism for the adverse perinatal outcomes observed following embryo transfer during fresh IVF cycles.
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Affiliation(s)
- Suneeta Senapati
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology & Infertility, University of Pennsylvania Perelman School of Medicine, 3701 Market Street Suite 800, Philadelphia, PA, 19104, USA
| | - Fan Wang
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Teri Ord
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology & Infertility, University of Pennsylvania Perelman School of Medicine, 3701 Market Street Suite 800, Philadelphia, PA, 19104, USA
| | - Christos Coutifaris
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology & Infertility, University of Pennsylvania Perelman School of Medicine, 3701 Market Street Suite 800, Philadelphia, PA, 19104, USA
| | - Rui Feng
- Center for Clinical Epidemiology & Biostatistics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Monica Mainigi
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology & Infertility, University of Pennsylvania Perelman School of Medicine, 3701 Market Street Suite 800, Philadelphia, PA, 19104, USA.
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Grazul-Bilska AT, Reyaz A, Valkov V, Dorsam ST, Redmer DA. Follicle stimulating hormone receptor protein is expressed in ovine uterus during the estrous cycle and utero-placenta during early pregnancy: An immunohistochemical study. Acta Histochem 2018; 120:420-428. [PMID: 29754696 DOI: 10.1016/j.acthis.2018.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 05/08/2018] [Indexed: 12/26/2022]
Abstract
Follicle stimulating hormone (FSH) is a well characterized gonadotropin that controls primarily development and functions of ovarian follicles in mammalian species. FSH binds to a specific G protein-coupled receptor (FSHR) belonging to the glycoprotein hormone receptor family that plays an essential role in reproduction. Although the primary location of FSHR is in the gonads (mainly in ovarian follicles), FSHR protein and/or mRNA have also been detected in extragonadal female reproductive tissues including embryo, placenta, endometrium, cervix, ovarian cancer tissues, and/or endometriotic lesions in several species. To determine the pattern of FSHR expression in the uterus and placenta, uterine tissues were collected at the early, mid- and/or late luteal phases of the estrous cycle from non-treated or FSH-treated ewes, and utero-placental tissues were collected during early pregnancy followed by immunohistochemistry and image generation. FSHR was immunolocalized to several uterine and utero-placental compartments including luminal epithelium, endometrial glands and surrounding stroma, myometrium, and endothelium and vascular smooth muscle cells in endometrium, myometrium and mesometrium. Intensity of staining and distribution of FSHR in selected compartments differed and seems to depend on the stage of the estrous cycle or pregnancy, and FSH-treatment. These novel data demonstrate differential expression of FSHR protein indicating that FSH plays a specific role in regulation of uterine and utero-placenta functions in sheep.
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Reproductive performance of Bos indicus beef cows treated with different doses of equine chorionic gonadotropin at the end of a progesterone-estrogen based protocol for fixed-time artificial insemination. Theriogenology 2018; 118:150-156. [PMID: 29906665 DOI: 10.1016/j.theriogenology.2018.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 11/21/2022]
Abstract
Two experiments were performed to evaluate the reproductive performance of zebu beef cows treated with different doses of eCG at the end of a progesterone (P4)/estrogen based protocol for timed artificial insemination (TAI). In Experiment 1, suckling Bos indicus Nelore cows (n = 261) received, on day 0, a progesterone (P4) intravaginal device (PD) and an injection of 1 mg estradiol benzoate (EB). On day 8, the PD was removed, 500 μg of cloprostenol was injected, and cows were assigned to one of the following groups: Control (no treatment), 300 (300 IU of eCG), 600 (600 IU of eCG), and 900 (900 IU of eCG). On day 9, all cows received 1 mg EB and TAI performed 54-56 h after cloprostenol injection. A pregnancy diagnosis was done by ultrasound scanning 40 days after TAI, and the number of fetuses and calves was recorded at pregnancy diagnosis and at birth. More cows treated with eCG displayed estrus within 48 h after removal of the PD (42.3% vs. 11.6%, P < 0.01), and ovulated more than one follicle (42%, 58/138 vs. 1.8%, 1/54; P < 0.01). This effect on ovulation rate was dose dependent (P < 0.05). The pregnancy rate was affected only by cow parity (primiparous, 25.3% vs. multiparous, 48.9%; P < 0.01). Twin pregnancy was higher (P < 0.01) in cows treated with eCG (42%, 58/138) than controls (0%, 0/54). However, few cows (33.3%) were able to keep both fetuses intact until birth. For evaluation of ovarian characteristics by B-mode and Doppler ultrasonography, 43 Nelore cows were submitted In Experiment 2 to the same four groups described in Experiment 1. Although no difference (P > 0.1) was observed for size and blood perfusion in the pre-ovulatory follicles, corpus luteum was larger and with greater blood perfusion (P < 0.05) in eCG-treated cows. In conclusion, eCG increased the number of double/multiple ovulations in a dose-dependent manner, induced larger and more vascularized corpora lutea, but did not affect the fertility of cyclic or anestrous cows. Although eCG results in twin pregnancies, most of cows underwet embryo/fetus loss and birth a single calf.
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16
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Kraisoon A, Redmer DA, Bass CS, Navanukraw C, Dorsam ST, Valkov V, Reyaz A, Grazul-Bilska AT. Corpora lutea in superovulated ewes fed different planes of nutrition. Domest Anim Endocrinol 2018; 62:16-23. [PMID: 28886590 DOI: 10.1016/j.domaniend.2017.08.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/28/2017] [Accepted: 08/05/2017] [Indexed: 02/06/2023]
Abstract
The corpus luteum (CL) is an ovarian structure which is critical for the maintenance of reproductive cyclicity and pregnancy support. Diet and/or diet components may affect some luteal functions. FSH is widely used to induce multiple follicle development and superovulation. We hypothesized that FSH would affect luteal function in ewes fed different nutritional planes. Therefore, the aim of this study was to determine if FSH-treatment affects (1) ovulation rate; (2) CL weight; (3) cell proliferation; (4) vascularity; (5) expression of endothelial nitric oxide (eNOS) and soluble guanylate cyclase (sGC) proteins; and (6) luteal and serum progesterone (P4) concentration in control (C), overfed (O), and underfed (U) ewes at the early- and mid-luteal phases. In addition, data generated from this study were compared to data obtained from nonsuperovulated sheep and described by Bass et al. Ewes were categorized by weight and randomly assigned into nutrition groups: C (2.14 Mcal/kg; n = 11), O (2xC; n = 12), and U (0.6xC; n = 11). Nutritional treatment was initiated 60 d prior to day 0 of the estrous cycle. Ewes were injected with FSH on day 13-15 of the first estrous cycle, and blood samples and ovaries were collected at early- and mid-luteal phases of the second estrous cycle. The number of CL/ewe was determined, and CL was dissected and weighed. CL was fixed for evaluation of expression of Ki67 (a proliferating cell marker), CD31 (an endothelial cell marker), and eNOS and sGC proteins using immunohistochemistry and image analysis. From day 0 until tissue collection, C maintained, O gained, and U lost body weight. The CL number was greater (P < 0.03) in C and O than U. Weights of CL, cell proliferation, vascularity, and eNOS but not sGC expression were greater (P < 0.001), and serum, but not luteal tissue, P4 concentrations tended to be greater (P = 0.09) at the early- than mid-luteal phase. Comparisons of CL measurements demonstrated greater (P < 0.01) cell proliferation and serum P4 concentration, but less vascularity at the early and mid-luteal phases, and less CL weight at the mid-luteal phase in superovulated than nonsuperovulated ewes; however, concentration of P4 in luteal tissues was similar in both groups. Thus, in superovulated ewes, luteal cell proliferation and vascularity, expression of eNOS, and serum P4 concentration depend on the stage of luteal development, but not diet. Comparison to control ewes demonstrated several differences and some similarities in luteal functions after FSH-induced superovulation.
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Affiliation(s)
- A Kraisoon
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
| | - D A Redmer
- Department of Animal Sciences, North Dakota State University, Fargo, ND, USA
| | - C S Bass
- Department of Animal Sciences, North Dakota State University, Fargo, ND, USA
| | - C Navanukraw
- Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand; Agricultural Biotechnology Research Center for Sustainable Economy (ABRCSE), Khon Kaen University, Khon Kaen, Thailand
| | - S T Dorsam
- Department of Animal Sciences, North Dakota State University, Fargo, ND, USA
| | - V Valkov
- Department of Animal Sciences, North Dakota State University, Fargo, ND, USA
| | - A Reyaz
- Department of Animal Sciences, North Dakota State University, Fargo, ND, USA
| | - A T Grazul-Bilska
- Department of Animal Sciences, North Dakota State University, Fargo, ND, USA.
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Grazul-Bilska AT, Thammasiri J, Kraisoon A, Reyaz A, Bass CS, Kaminski SL, Navanukraw C, Redmer DA. Expression of progesterone receptor protein in the ovine uterus during the estrous cycle: Effects of nutrition, arginine and FSH. Theriogenology 2017; 108:7-15. [PMID: 29175682 DOI: 10.1016/j.theriogenology.2017.11.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/06/2017] [Accepted: 11/09/2017] [Indexed: 12/14/2022]
Abstract
To evaluate expression of progesterone receptor (PGR) AB in follicle stimulating hormone (FSH)-treated or non-treated sheep administered with arginine (Arg) or saline (Sal) fed a control (C), excess (O) or restricted (U) diet, uterine tissues were collected at the early, mid and/or late luteal phases. In exp. 1, ewes from each diet were randomly assigned to one of two treatments, Arg or Sal administration three times daily from day 0 of the first estrous cycle until uterine tissue collection. In exp. 2, ewes were injected twice daily with FSH on days 13-15 of the first estrous cycle. Uterine tissues were immunostained to detect PGR followed by image analysis. PGR were detected in luminal epithelium (LE), endometrial glands (EG), endometrial stroma (ES), myometrium (Myo), and endometrial and myometrial blood vessels. The percentage of PR-positive cells and/or intensity of staining were affected by phase of the estrous cycle, plane of nutrition, and/or FSH but not by Arg. In exp. 1, percentage of PGR-positive cells in LE and EG but not in ES and Myo was greater at the early and mid than late luteal phase, was not affected by plane of nutrition, and was similar in LE and EG. Intensity of staining was affected by phase of the estrous cycle and plane of nutrition in LE, EG and Myo, and was the greatest in LE, less in EG, and least in ES and Myo. In exp. 2, percentage of PGR-positive cells in LE, EG, ES and Myo was affected by phase of the estrous cycle, but not by plane of nutrition; was greater at the early than mid luteal phase; and was greatest in LE and EG, less in luminal (superficial) ES and Myo and least in deep ES. Intensity of staining was affected by phase of the estrous cycle and plane of nutrition in all compartments but ES, and was the greatest in LE and luminal EG, less in deep EG, and least in ES and Myo. Comparison of data for FSH (superovulated) and Sal-treated (non-superovulated) ewes demonstrated that FSH affected PR expression in all evaluated uterine compartments depending on plane of nutrition and phase of the estrous cycle. Thus, PGR are differentially distributed in uterine compartments, and PGR expression is affected by nutritional plane and FSH, but not Arg depending on phase of the estrous cycle. Such changes in dynamics of PGR expression indicate that diet plays a regulatory role and that FSH-treatment may alter uterine functions.
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Affiliation(s)
- Anna T Grazul-Bilska
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA.
| | - Jiratti Thammasiri
- Agricultural Biotechnology Research Center for Sustainable Economy (ABRCSE), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Aree Kraisoon
- Agricultural Biotechnology Research Center for Sustainable Economy (ABRCSE), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Arshi Reyaz
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Casie S Bass
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Samantha L Kaminski
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Chainarong Navanukraw
- Agricultural Biotechnology Research Center for Sustainable Economy (ABRCSE), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Dale A Redmer
- Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
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18
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Grazul-Bilska AT, Khanthusaeng V, Bass CS, Kaminski SL, Navanukraw C, Redmer DA. Lipid droplets in the ovine uterus during the estrous cycle: Effects of nutrition, arginine, and FSH. Theriogenology 2017; 87:212-220. [DOI: 10.1016/j.theriogenology.2016.08.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 08/14/2016] [Accepted: 08/25/2016] [Indexed: 12/20/2022]
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19
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Viana J, Vargas M, Siqueira L, Camargo L, Figueiredo A, Fernandes C, Palhao M. Efficacy of induction of luteolysis in superovulated cows is dependent on time of prostaglandin F2alpha analog treatment: effects on plasma progesterone and luteinizing hormone profiles. Theriogenology 2016; 86:934-939. [DOI: 10.1016/j.theriogenology.2016.03.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 12/23/2015] [Accepted: 03/11/2016] [Indexed: 11/25/2022]
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20
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Weinerman R, Mainigi M. Why we should transfer frozen instead of fresh embryos: the translational rationale. Fertil Steril 2014; 102:10-8. [PMID: 24890274 DOI: 10.1016/j.fertnstert.2014.05.019] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 04/24/2014] [Accepted: 05/13/2014] [Indexed: 12/17/2022]
Abstract
Epidemiologic studies have shown an increased rate of adverse perinatal outcomes, including small for gestational age (SGA) births, in fresh in vitro fertilization (IVF) cycles compared with frozen embryo transfer cycles. This increase is not seen in the donor oocyte population, suggesting that it is the peri-implantation environment created after superovulation that is responsible for these changes. During a fresh IVF cycle, multiple corpora lutea secrete high levels of hormones and other factors that can affect the endometrium and the implanting embryo. In this review, we discuss both animal and human data demonstrating that superovulation has significant effects on the endometrium and embryo. Additionally, potential mechanisms for the adverse effects of gonadotropin stimulation on implantation and placental development are proposed. We think that these data, along with the growing body of epidemiologic evidence, support the proposal that frozen embryo transfer should be considered preferentially, particularly in high responders, as a means to potentially decrease at least some of the adverse perinatal outcomes associated with IVF.
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Affiliation(s)
- Rachel Weinerman
- Division of Reproductive Endocrinology and Infertility, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Monica Mainigi
- Division of Reproductive Endocrinology and Infertility, University of Pennsylvania, Philadelphia, Pennsylvania.
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