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Liu Z, Chen Y, Huang M, Du Y, Xu G, Liu Z, Zhang M, Presicce GA, Xing X, Du F. Effects of hormone sources on developmental competence of oocytes by ovum pickup in Japanese black cattle. Anim Reprod Sci 2024; 267:107533. [PMID: 38879972 DOI: 10.1016/j.anireprosci.2024.107533] [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: 04/24/2024] [Revised: 06/08/2024] [Accepted: 06/11/2024] [Indexed: 06/18/2024]
Abstract
Japanese Black (Wagyu) cattle donors were primed with different protocols and sources of follicle-stimulating hormone (FSH) for successive ovum pickup (OPU) and embryo development after in vitro fertilization (IVF). Following OPU, retrieved cumulus oocyte complexes (COCs) were subjected to IVF, and resulting blastocysts were transferred into recipients to evaluate implantation capability. Experiment 1: The best blastocyst development (45.3 %) and embryo yields (5.0/donor/OPU) were found with oocytes retrieved from donors treated with FSH (STIMUFOL®, Belgium) at a dosage of 150 IU per donor, compared to two others commercial FSH sources. Experiment 2: There were no differences in embryo development or yield with STIMUFOL FSH (total FSH 150 IU/donor) at a priming duration of either 60-h (Regime 1, six FSH injections) or 36-h (Regime 2, four FSH injections). Experiment 3: Compacted COCs required 22-26-h maturation in vitro (IVM) before IVF for optimal blastocyst development (36.1-41.1 %); however, short (18-h) and prolonged (30-h) IVM duration resulted in lower embryonic development. In contrast, expanded COCs resulted in inferior blastocyst development compared to compacted COCs. Immunofluorescence microscopy revealed that the ratio of 89.8 % cumulus compacted COCs were at the germinal vesicle (pachytene) phase while 98.9 % cumulus expanded COCs went through spontaneous meiosis from meiotic metaphase I, anaphase I, telophase I to metaphase II upon OPU retrieval (P<0.05). Pregnancy rates were not different among three FSH sources or different FSH treatments as long as embryos reached the blastocyst stage. Our study found that different sources of FSH used for Wagyu donor priming prior to OPU resulted in differential embryo development potentials, but those embryos that reached out to blastocysts had a competent implantation ability.
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Affiliation(s)
- Zhihui Liu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Yanling Chen
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Mengjia Huang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Yinyan Du
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Guangyong Xu
- Qingdao Longmingniu Embryo Biotechnologies Co. LTD, Qingdao, Shandong 266400, PR China
| | - Zhentian Liu
- Qingdao Longmingniu Embryo Biotechnologies Co. LTD, Qingdao, Shandong 266400, PR China
| | - Meijie Zhang
- Qingdao Longmingniu Embryo Biotechnologies Co. LTD, Qingdao, Shandong 266400, PR China
| | | | - Xuesong Xing
- Qingdao Longmingniu Embryo Biotechnologies Co. LTD, Qingdao, Shandong 266400, PR China.
| | - Fuliang Du
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China.
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2
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Knox RV. Follicle development in pigs: State of the art. Mol Reprod Dev 2023; 90:480-490. [PMID: 35642618 DOI: 10.1002/mrd.23576] [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: 01/14/2022] [Revised: 05/06/2022] [Accepted: 05/13/2022] [Indexed: 11/10/2022]
Abstract
Understanding the factors and pathways involved with recruitment, atresia, and selection of follicles in the pig, may provide insight into approaches to limit fertility failures. Antral follicles depend upon FSH to the 2-3 mm stage, become codependent upon LH at 4-5 mm, and rely on LH when >5 mm. Within the follicle, gonadotropin binding, steroids, growth factors, and inhibin interact to determine the fate of the follicle. Continuous recruitment appears likely for follicles, and once >1 mm, they may have a limited period for survival, before selection or atresia. If true, then the number of healthy follicles that can respond to a hormone signal for selection, could vary by size and development stage. Which follicles are selected may depend upon their age, numbers of capillaries, granulosa and thecal cells, and FSH and LH receptors. This might also suggest that factors such as management, nutrition, and stress in prior weeks, could affect different cohorts of follicles to determine which of those from the ovarian population will be selected.
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Affiliation(s)
- Robert V Knox
- Department of Animal Sciences, University of Illinois Champaign-Urbana, Champaign-Urbana, Illinois, USA
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3
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Ferré LB, Alvarez-Gallardo H, Romo S, Fresno C, Stroud T, Stroud B, Lindsey B, Kjelland ME. Transvaginal ultrasound-guided oocyte retrieval in cattle: State-of-the-art and its impact on the in vitro fertilization embryo production outcome. Reprod Domest Anim 2023; 58:363-378. [PMID: 36510745 DOI: 10.1111/rda.14303] [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: 06/17/2022] [Revised: 10/02/2022] [Accepted: 11/16/2022] [Indexed: 12/14/2022]
Abstract
Transvaginal ultrasound-guided oocyte retrieval (commonly called OPU) and in vitro embryo production (IVP) in cattle has shown significant progress in recent years, in part, as a result of a better understanding of the full potential of these tools by end users. The combination of OPU and IVP (OPU-IVP) has been successfully and widely commercially used worldwide. The main advantages are a greater number of embryos and pregnancies per unit of time, faster genetic progress due to donor quick turn around and more elite sires mating combinations, larger spectrum of female age (calves, prepuberal, heifer, cow) and condition (open, pregnant) from which to retrieve oocytes, a reduced number of sperm (even sexed) required to fertilize the oocytes, among other benefits. OPU-IVP requires significant less donor preparation in comparison to conventional embryo transfer (<50% of usual FSH injections needed) to the extent of no stimulating hormones (FSH) are necessary. Donor synchronization, stimulation, OPU technique, oocyte competence, embryo performance, and its impact on cryopreservation and pregnancy are discussed.
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Affiliation(s)
- Luis B Ferré
- National Institute of Agricultural Technology (INTA), Chacra Experimental Integrada Barrow (MDA-INTA), Tres Arroyos, Argentina
| | - Horacio Alvarez-Gallardo
- Centro Nacional de Recursos Genéticos, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Tepatitlán de Morelos, Jalisco, Mexico
| | - Salvador Romo
- Laboratorio de Reproducción, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán, Estado de Mexico, Mexico
| | - Cristóbal Fresno
- Health Sciences Research Center (CICSA), Anáhuac University of México, Huixquilucan, Mexico
| | | | - Brad Stroud
- Stroud Veterinary Embryo Services, Inc, Weatherford, Texas, USA
| | | | - Michael E Kjelland
- Conservation, Genetics and Biotech, LLC, Valley City, North Dakota, USA.,Mayville State University, Mayville, North Dakota, USA
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4
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Ma J, Wang J, Hu S, Li Y, Zhang Y, Yang Y, Yang C, Huo S, Yang Y, Zhaxi Y, Luo W. Effects of melatonin on development and hormone secretion of sheep theca cells in vitro. Theriogenology 2023; 198:172-182. [PMID: 36592515 DOI: 10.1016/j.theriogenology.2022.12.036] [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: 11/04/2022] [Revised: 12/23/2022] [Accepted: 12/26/2022] [Indexed: 12/28/2022]
Abstract
Theca cells (TCs) play a unique role in the structure and function of the ovary. They are not only the structural basis of the follicle but also the androgen-secreting cells in female mammals, which can affect the normal development and atresia of the follicle. The results showed that melatonin receptor (MTR) MT1 and MT2 were expressed on sheep TCs. In the present study, the effects of different concentrations of MT at 0, 10-10, 10-8, 10-6 and 10-4 M/L on sheep TCs with regards to the antioxidant levels, proliferation, apoptosis and steroid hormone secretion were investigated. The results showed that in sheep TCs, all concentrations of MT significantly decreased reactive oxygen species (ROS) concentration and BAX expression; increased Cat, Sod1, and BCL-2 expression. The proliferation viability of TCs was significantly inhibited in all groups except for 10-10 M/L MT, and the expression of cyclin D1 and CDK4 was significantly reduced. MT significantly increased StAR expression and progesterone secretion in TCs, but there was no significant effect on androgen secretion and CYP11A1, CYP17A1 and 3β-HSD expression in all groups. MT-induced progesterone secretion was completely inhibited by Luzindole (a nonspecific MT1 and MT2 inhibitor) and partially inhibited by 4p-PDOT (specific MT2 inhibitor). MT-induced progesterone secretion can be inhibited by LY294002 (PI3K/AKT pathway inhibitor). This study indicated that MT inhibits apoptosis and proliferation of in vitro cultured sheep TCs, which has implications for slowing ovarian atresia and aging. MT activates the PI3K/Akt pathway to mediate the synthesis and secretion of progesterone by TCs. This study provides a basis for further exploration of the role of TCs on follicle development and ovarian steroid hormone secretion.
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Affiliation(s)
- Junyuan Ma
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Jine Wang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Songming Hu
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Yang Li
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Yaxin Zhang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Yahua Yang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Chongfa Yang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Shengdong Huo
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China.
| | - Yanmei Yang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Yingpai Zhaxi
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Wenxue Luo
- Tianzhu County Animal Husbandry Technology Extension Station, Wuwei, Gansu, 733200, China
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McEvoy MJ, McAfee M, Hession JA, Creedon L. A Mathematical Model of Estradiol Production from Ultrasound Data for Bovine Ovarian Follicles. Cells 2022; 11:cells11233908. [PMID: 36497167 PMCID: PMC9739503 DOI: 10.3390/cells11233908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 10/29/2022] [Accepted: 11/03/2022] [Indexed: 12/12/2022] Open
Abstract
In this paper, we present a new way to assess the concentration of estradiol (E2) and Insulin Growth Factor-1 (IGF) based on the results from ultrasound scans combined with mathematical models. The IGF1 model is based on the progesterone (P4) concentration, which can be estimated with models calculating P4 level based on the size/volume of corpus luteum (CL) measured during ultrasound scans. At this moment little is known about the underlying reasons for double ovulation and silent heat occurrences. Both of these are linked to the level of IGF1: double ovulations are linked to higher IGF1 levels and and silent heat is linked to lower E2 to P4 ratio. These models can help to improve understanding of the related concentrations of E2 and IGF1. Currently, it is known that diet and genetic factors have an impact on ovulation rates and silent heat. In this study, we also examine the decline of the production of E2 in vivo by atretic follicles throughout the process of atresia. This is the first recorded quantitative description of this decline.
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Passos JRS, Guerreiro DD, Otávio KS, Dos Santos-Neto PC, Souza-Neves M, Cuadro F, Nuñez-Olivera R, Crispo M, Vasconcelos FR, Bezerra MJB, Silva RF, Lima LF, Figueiredo JR, Bustamante-Filho IC, Menchaca A, Moura AA. How in vitro maturation changes the proteome of ovine cumulus-oocyte complexes? Mol Reprod Dev 2022; 89:459-470. [PMID: 35901249 DOI: 10.1002/mrd.23638] [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: 02/16/2022] [Revised: 05/29/2022] [Accepted: 07/21/2022] [Indexed: 11/11/2022]
Abstract
The present study evaluated the effects of in vitro maturation (IVM) on the proteome of cumulus-oocyte complexes (COCs) from ewes. Extracted COC proteins were analyzed by LC-MS/MS. Differences in protein abundances (p < 0.05) and functional enrichments in immature versus in vitro-matured COCs were evaluated using bioinformatics tools. There were 2550 proteins identified in the COCs, with 89 and 87 proteins exclusive to immature and mature COCs, respectively. IVM caused downregulation of 84 and upregulation of 34 proteins. Major upregulated proteins in mature COCs were dopey_N domain-containing protein, structural maintenance of chromosomes protein, ubiquitin-like modifier-activating enzyme 2. Main downregulated proteins in mature COCs were immunoglobulin heavy constant mu, inter-alpha-trypsin inhibitor heavy chain 2, alpha-2-macroglobulin. Proteins exclusive to mature COCs and upregulated after IVM related to immune response, complement cascade, vesicle-mediated transport, cell cycle, and extracellular matrix organization. Proteins of immature COCs and downregulated after IVM were linked to metabolic processes, immune response, and complement cascade. KEGG pathways and miRNA-regulated genes attributed to downregulated and mature COC proteins related to complement and coagulation cascades, metabolism, humoral response, and B cell-mediated immunity. Thus, IVM influenced the ovine COC proteome. This knowledge supports the future development of efficient IVM protocols for Ovis aries.
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Affiliation(s)
- José Renato S Passos
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Denise D Guerreiro
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Kamila S Otávio
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | | | - Marcela Souza-Neves
- Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay
| | - Federico Cuadro
- Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay
| | | | - Martina Crispo
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Fábio R Vasconcelos
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Maria Julia B Bezerra
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Renato F Silva
- Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), Ceará State University, Fortaleza, Brazil
| | - Laritza F Lima
- Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), Ceará State University, Fortaleza, Brazil
| | - José Ricardo Figueiredo
- Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), Ceará State University, Fortaleza, Brazil
| | | | - Alejo Menchaca
- Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay.,Plataforma de Investigación en Salud Animal, Instituto Nacional de Investigación Agropecuaria, Montevideo, Uruguay
| | - Arlindo A Moura
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
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7
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Ciornei ŞG, Drugociu D, Ciornei L, Roşca P. Ovarian response to P4-PGF-FSH treatment in Suffolk sheep and P4-PGF-PMSG synchronization in cross-bred ewes, for IVD and ET protocol. Vet Med Sci 2022; 8:726-734. [PMID: 35037413 PMCID: PMC8959288 DOI: 10.1002/vms3.705] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The success of an embryo transfer protocol in sheep depends on many factors, but the choice of drugs for the desired superovulation as well as the conception rate (CR) are most essential. Reproductive activity in sheep is characterized by a seasonality influenced by several factors such as photoperiod, latitude, temperature, nutrition and breed. Reproductive seasonality and nutritional condition are the main factors that influence embryo production in sheep. In sheep, some anatomical peculiarities limit the application of traditional reproductive biotechnologies used in cattle. OBJECTIVES The aim of this study was to conclude on the effectiveness of a wider on farm in vivo embryo transfer development programme in Suffolk sheep by streamlining hormone therapies and optimizing technique. METHODS A total number of 60 sheep and three rams were included in this study, divided into two groups (receptors and donors). Donor Suffolk sheep were treated for superovulation using the P4-PGF-FSH multiple ovulation embryo transfer (MOET) protocol, while the cross-bred recipients' group was synchronized with P4-PGF-PMSG. RESULTS On the first day after superovulation, all ovaries had more than five dominant follicles, while corpora lutea were later observed in 83.3% sheep. The recovery rate was 83.3%, while 72.9% embryos were transferable. Embryos were transferred directly into recipients. Fertility after 30 days was 68.57%, lambing rate was 91.6% and CR was 62.85%. This study showed that veterinary drugs (P4, FSH, LH, PMSG, PGF) used for superovulation optimized by us were capable of producing by this improved technique the optimization of the reproduction indices at embryo-transfer (ET) and to be able to be used successfully. CONCLUSIONS The application of an MOET protocol has a positive effect in the production of in vivo embryo production (IVD) embryos in Suffolk sheep and can guarantee the success of embryo transfer activity to ewes with lower genetic merit. Our research aimed at representing a model for sheep farms for a rapid improvement of productive traits.
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Affiliation(s)
- Ştefan Gregore Ciornei
- Faculty of Veterinary Medicine, Department of Clinics, ReproductionIasi University of Life Sciences (IULS)IasiRomania
| | - Dan Drugociu
- Faculty of Veterinary Medicine, Department of Clinics, ReproductionIasi University of Life Sciences (IULS)IasiRomania
| | - Liliana Ciornei
- Faculty of Veterinary Medicine, Department of Clinics, ReproductionIasi University of Life Sciences (IULS)IasiRomania
| | - Petru Roşca
- Faculty of Veterinary Medicine, Department of Clinics, ReproductionIasi University of Life Sciences (IULS)IasiRomania
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Zi XD, Xiong Y, Wu JB, Gige MT, Zhao SB, Yu ZH, Lu Y, Qiao YS. Dynamic changes in gene expression during follicle development and the efficacy of four timed AI protocols in non-suckling female yaks ( Bos grunniens). Anim Biotechnol 2022:1-7. [PMID: 35133936 DOI: 10.1080/10495398.2022.2030346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The objectives of the study were to investigate changes in the mRNA expression levels of five genes during antral follicle development and to assess the efficacy of four timed-artificial insemination (TAI) protocols in female yaks (Bos grunniens). RT-qPCR analysis revealed that expression levels were greater for follicle-stimulating hormone receptor and bone morphogenic protein 15 in the small follicle, luteinizing hormone receptor, and kit ligand in the large follicle, and growth differentiation factor 9 in the medium follicle (p < 0.05). Non-suckling yaks were treated as a 7-d CIDR, and PGF2α + eCG at CIDR withdrawal and TAI with frozen yak semen at 56-58 h after PGF2α (PPe-7d); either a 7-d CIDR (PPG-7d) or a 5-d CIDR (PPG-5d), and PGF2α at CIDR withdrawal and TAI + GnRH at 70-72 h after PGF2α; and GnRH treatment on Day 0, followed by PGF2α on Day 7 and TAI + GnRH on Day 9 (GPG-7d). The results showed that the pregnancy rate (P/AI) was greater in PPG-5d than in GPG-7d (p < 0.05), but the P/AI was not different among the other TAI protocols. In conclusion, the expression levels of these genes in follicles are dynamically changed during antral follicle development in yaks. The PPG-5d protocol achieved a greater P/AI.
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Affiliation(s)
- Xiang-Dong Zi
- The Key Laboratory of Animal Science of State Ethnic Affairs Commission, Southwest Minzu University, Chengdu, China
| | - Yan Xiong
- The Key Laboratory of Animal Science of State Ethnic Affairs Commission, Southwest Minzu University, Chengdu, China
| | - Jin-Bo Wu
- Institute of Animal Science and Veterinary Medicine of Aba Prefecture, Sichuan, China
| | - Mo-Ti Gige
- The Key Laboratory of Animal Science of State Ethnic Affairs Commission, Southwest Minzu University, Chengdu, China
| | - Shou-Bao Zhao
- Datong Yak Breeding Farm of Qinghai Province, Xining, China
| | - Zhong-Hua Yu
- Institute of Animal Science and Veterinary Medicine of Aba Prefecture, Sichuan, China
| | - Yong Lu
- Institute of Animal Science and Veterinary Medicine of Aba Prefecture, Sichuan, China
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9
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Zhao F, Wei QW, Li BJ, Weng QN, Jiang Y, Ning CB, Liu KQ, Wu WJ, Liu HL. Impact of adrenocorticotropin hormone administration on the endocrinology, estrus onset, and ovarian function of weaned sows. Endocr J 2022; 69:23-33. [PMID: 34456194 DOI: 10.1507/endocrj.ej21-0184] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Chronic stress affects the reproductive health of mammals; however, the impact of adrenocorticotropin hormone (ACTH) level elevation during chronic stress on the reproduction of weaned sows remains unclear. In this study, nine weaned sows with the same parturition date were randomly divided into control group (n = 4) and ACTH group (n = 5). Each group received intravenous administration of ACTH three times daily for 7 days. Blood samples were collected every 3 h after injection. A radioimmunoassay was used to measure the concentrations of cortisol, luteinizing hormone (LH), follicle-stimulating hormone (FSH), progesterone (P4) and estradiol-17β (E2) in the blood. Estrus was determined according to changes in the vulva and the boar contact test. The mRNA expressions of glucocorticoid receptor, FSH receptor, LH receptor (LHR) in the corpus luteum (CL) were detected by qRT-PCR. The results showed that ACTH administration substantially delayed the initiation of estrus and the pre-ovulatory LH peak. The sows of control group ovulated within 10 days and the ovulation rate was 100%, while it was 60% in the ACTH group. Two sows of ACTH group showed pseudo-estrus. The E2 concentrations significantly decreased in the ACTH group at 36 h, 42 h and 66 h of the experimental period. The P4 concentrations in the ACTH group significantly decreased at 132, 138, and 147 h of the experimental period. ACTH significantly reduced the LHR mRNA expression in CLs. In conclusion, long-term repeated ACTH administration affects the endocrinology, estrus onset, and ovarian function of weaned sows.
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Affiliation(s)
- Fang Zhao
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
- Key Laboratory of Crop and Animal Integrated Farming, Ministry of Agriculture and Rural Affairs, Nanjing, 210014, China
| | - Quan-Wei Wei
- Laboratory of Animal Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Bo-Jiang Li
- Laboratory of Animal Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qian-Nan Weng
- Laboratory of Animal Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yi Jiang
- Laboratory of Animal Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Cai-Bo Ning
- Laboratory of Animal Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kai-Qing Liu
- Laboratory of Animal Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wang-Jun Wu
- Laboratory of Animal Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hong-Lin Liu
- Laboratory of Animal Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
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10
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Téteau O, Liere P, Pianos A, Desmarchais A, Lasserre O, Papillier P, Vignault C, Lebachelier de la Riviere ME, Maillard V, Binet A, Uzbekova S, Saint-Dizier M, Elis S. Bisphenol S Alters the Steroidome in the Preovulatory Follicle, Oviduct Fluid and Plasma in Ewes With Contrasted Metabolic Status. Front Endocrinol (Lausanne) 2022; 13:892213. [PMID: 35685208 PMCID: PMC9172638 DOI: 10.3389/fendo.2022.892213] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/05/2022] [Indexed: 12/12/2022] Open
Abstract
Bisphenol A (BPA), a plasticizer and endocrine disruptor, has been substituted by bisphenol S (BPS), a structural analogue that had already shown adverse effects on granulosa cell steroidogenesis. The objective of this study was to assess the effect of chronic exposure to BPS, a possible endocrine disruptor, on steroid hormones in the ovary, oviduct and plasma using the ewe as a model. Given the interaction between steroidogenesis and the metabolic status, the BPS effect was tested according to two diet groups. Eighty adult ewes were allotted to restricted (R) and well-fed (WF) groups, that were further subdivided into two subgroups. Ewes were exposed to 50 µg BPS/kg/day in their diet (R50 and WF50 groups) or were unexposed controls (R0 and WF0 groups). After at least 3 months of BPS exposure, preovulatory follicular fluid, oviduct fluid and plasma were collected and steroid hormones were analyzed by gas chromatography coupled with tandem mass spectrometry (GC-MS/MS). A deleterious effect of restricted diet on the volume of oviduct fluid and numbers of pre-ovulatory follicles was observed. Exposure to BPS impaired estradiol concentrations in both follicular and oviduct fluids of well-fed ewes and progesterone, estradiol and estrone concentrations in plasma of restricted ewes. In addition, a significant interaction between metabolic status and BPS exposure was observed for seven steroids, including estradiol. In conclusion, BPS acts in ewes as an endocrine disruptor with differential actions according to metabolic status.
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Affiliation(s)
- Ophélie Téteau
- CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly, France
| | - Philippe Liere
- U1195 INSERM - Université Paris Saclay, Le Kremlin-Bicêtre Cedex, France
| | - Antoine Pianos
- U1195 INSERM - Université Paris Saclay, Le Kremlin-Bicêtre Cedex, France
| | | | | | | | - Claire Vignault
- CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly, France
- Service de Médecine et Biologie de la Reproduction, CHRU de Tours, Tours, France
| | | | | | - Aurélien Binet
- CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly, France
- Service de Chirurgie pédiatrique viscérale, urologique, plastique et brûlés, CHRU de Tours, Tours, France
| | | | | | - Sebastien Elis
- CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly, France
- *Correspondence: Sebastien Elis,
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11
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Rodrigues JND, Guimarães JD, Oliveira MEF, Dias JH, Arrais AM, de Sousa MAP, Bastos R, Ahmadi B, Bartlewski PM, Fonseca JF. Human chorionic gonadotropin affects original (ovulatory) and induced (accessory) corpora lutea, progesterone concentrations, and pregnancy rates in anestrous dairy goats. Reprod Biol 2021; 22:100591. [PMID: 34864544 DOI: 10.1016/j.repbio.2021.100591] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/06/2021] [Accepted: 11/23/2021] [Indexed: 11/19/2022]
Abstract
Two experiments were conducted in acyclic Alpine (A) and Saanen (S) goats that received intravaginal sponges containing 60 mg of medroxyprogesterone acetate for 6 days, as well as 200 IU of eCG and 30 μg d-cloprostenol i.m. 24 h before sponge removal. On day 7 (day 0 = onset of synchronized estrus), all goats were randomly divided into two groups: animals treated with 300 IU of hCG i.m. (hCG; Exp.1: n = 8A; Exp.2: n = 75A + S) and untreated controls (Control; Exp.1: n = 8A; Exp. 2: n = 70A + S). In Exp.2, all goats were artificially inseminated. Transrectal ovarian ultrasonography and blood collection were done on days 7, 10, 13, 17, and 21 (Exp.1), and pregnancy detection on day 60 (Exp.2). Estrus and ovulations occurred in five hCG and seven Control animals. Accessory CL (aCL) were detected in all hCG does. The total luteal area of ovulatory corpora lutea (oCL) increased (P < 0.05) on day 10 in hCG does and remained greater (P < 0.05) than in Control until day 21. Total and high-velocity color Doppler area were greater (P < 0.05) for oCL of hCG does on days 13 and 17. Progesterone concentrations were greater (P < 0.05) in hCG does from days 13 to 21 and related directly to the total luteal and oCL area for the duration of the study in all does. The pregnancy rate was higher (P < 0.05) in hCG than in Control by 22.5 %. Human chorionic gonadotropin given on day 7 of the synchronized estrous cycle positively affected CL function and pregnancy rates in seasonally anovular dairy goats.
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Affiliation(s)
| | - José Domingos Guimarães
- Departamento de Medicina Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, s/n, CEP 36570-000, Viçosa, MG, Brazil
| | - Maria Emilia Franco Oliveira
- Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Via de acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900, Jaboticabal, SP, Brazil; Embrapa Caprinos e Ovinos, Estrada Sobral/Groaíras, km 04, CP 145, CEP 62010-970, Sobral, CE, Brazil
| | - Jenniffer Hauschildt Dias
- Departamento de Medicina Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, s/n, CEP 36570-000, Viçosa, MG, Brazil
| | - Aline Matos Arrais
- Departamento de Reprodução e Avaliação Animal, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, Km7, s/n, CEP 23890-000, Seropédica, RJ, Brazil
| | - Marco Antonio Paula de Sousa
- Instituto de Medicina Veterinária, Universidade Federal do Pará, Av. dos Universitários, s/n, CEP 68746-360, Castanhal, PA, Brazil
| | - Rosemary Bastos
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, n° 2000, CEP 28013-642, Campos dos Goytacazes, RJ, Brazil
| | - Bahareh Ahmadi
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - Pawel Mieczyslaw Bartlewski
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - Jeferson Ferreira Fonseca
- Embrapa Caprinos e Ovinos, Estrada Sobral/Groaíras, km 04, CP 145, CEP 62010-970, Sobral, CE, Brazil.
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12
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Hormonal Levels and Follicular Dynamics in Relation to the Oestrous Cycle in Barb and Arabian Mares, Algeria. FOLIA VETERINARIA 2021. [DOI: 10.2478/fv-2021-0011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
This current study is an effort to understand the hormonal and follicular growth in the Barb and Arabian mares during the oestrous cycle; as mares are unique creatures. A total of 53 mares with 97 oestrous cycles were studied. The mares with a mean age of 10.38 ± 4.55 were examined by ultrasonography every day during their breeding season (2017). Two blood samples from each mare (n = 24) were obtained for progesterone (P4), oestrogen (oestradiol-17 beta) and follicle-stimulating hormone (FSH) determinations. The data revealed that the duration of the oestrous cycle was between 19 to 22 days. The pre-ovulatory follicle grew (3.02 ± 1.04) millimetre per day. The rate of cycles exploited in the mare (Arabian versus Barb) for conception was significantly different (P < 0.001). The maximal diameter of the follicle was 50.00 millimetre. The serum progesterone levels (P < 0.01) in mares were significantly higher in the luteal phase than those recorded during the time of oestrous. However, the levels of oestradiol and for FSH did not significantly change during the oestrous cycle in the mares. Determining the association between the size of the follicle and the hormone profiles were the most reliable criterion in the prediction of ovulation.
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Chiara Perego M, Bellitto N, Maylem ERS, Caloni F, Spicer LJ. Effects of selected hormones and their combination on progesterone and estradiol production and proliferation of feline granulosa cells cultured in vitro. Theriogenology 2021; 168:1-12. [PMID: 33826978 DOI: 10.1016/j.theriogenology.2021.03.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 02/27/2021] [Accepted: 03/23/2021] [Indexed: 12/17/2022]
Abstract
Little is known about the hormonal regulation of feline ovarian granulosa cell proliferation and steroidogenesis. The present study aimed to develop a hormone responsive granulosa cell culture system to measure steroidogenic and cell proliferation responses to help identify factors that might regulate ovarian function in queens. Five experiments were conducted each with 75 or more ovaries, three in spring and two in fall seasons. Granulosa cells were isolated and treated in vitro with various hormones in serum-free medium for 48 h after an initial 48 h plating in 10% fetal calf serum. In granulosa cells isolated from spring and fall collected feline ovaries, IGF1 alone and combined with FSH stimulated (P < 0.05) cell proliferation, whereas FSH alone had no effect (P > 0.10) on cell proliferation. Also, in granulosa cells collected in spring and fall, IGF1 alone and FSH alone increased (P < 0.05) estradiol production by severalfold, and a combination of FSH and IGF1 increased (P < 0.05) estradiol production above either FSH or IGF1 treatment alone. The FSH plus IGF1 treatment increased (P < 0.05) CYP19A1 mRNA abundance by 27-fold. In contrast, EGF decreased (P < 0.05) FSH plus IGF1-induced estradiol production by over 80% in granulosa cells of both spring and fall collected ovaries. In granulosa cells isolated from spring and fall collected ovaries, IGF1 plus FSH inhibited (P < 0.05) progesterone production. Melatonin increased (P < 0.05) FSH plus IGF1-induced cell proliferation and amplified (P < 0.05) the FSH plus IGF1-induced inhibition of progesterone production. However, melatonin and GH had no effect (P > 0.10) on estradiol production either alone or in combination with FSH plus IGF1 in both spring and fall. Prolactin, FGF9 and activin had no effect (P > 0.10) on cell proliferation or steroidogenesis. FGF2 decreased (P < 0.05) estradiol production without affecting progesterone production or cell numbers. Growth differentiation factor 9 (GDF9) increased (P < 0.05) progesterone production but had no effect (P > 0.10) on granulosa cell proliferation or estradiol production. In conclusion, the in vitro system described herewithin may be useful to assess and evaluate ovarian function in feline species and has identified EGF, FSH and IGF1 as major regulators of feline ovarian follicular function.
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Affiliation(s)
- M Chiara Perego
- Department of of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Nicholas Bellitto
- Department of Environmental Science and Policy, Università Degli Studi di Milano, Via Celoria 10, 20133, Milan, Italy
| | - Excel Rio S Maylem
- Department of of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Francesca Caloni
- Department of Environmental Science and Policy, Università Degli Studi di Milano, Via Celoria 10, 20133, Milan, Italy
| | - Leon J Spicer
- Department of of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA.
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14
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Agwuegbo UT, Colley E, Albert AP, Butnev VY, Bousfield GR, Jonas KC. Differential FSH Glycosylation Modulates FSHR Oligomerization and Subsequent cAMP Signaling. Front Endocrinol (Lausanne) 2021; 12:765727. [PMID: 34925235 PMCID: PMC8678890 DOI: 10.3389/fendo.2021.765727] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 11/02/2021] [Indexed: 01/18/2023] Open
Abstract
Follicle-stimulating hormone (FSH) and its target G protein-coupled receptor (FSHR) are essential for reproduction. Recent studies have established that the hypo-glycosylated pituitary FSH glycoform (FSH21/18), is more bioactive in vitro and in vivo than the fully-glycosylated variant (FSH24). FSH21/18 predominates in women of reproductive prime and FSH24 in peri-post-menopausal women, suggesting distinct functional roles of these FSH glycoforms. The aim of this study was to determine if differential FSH glycosylation modulated FSHR oligomerization and resulting impact on cAMP signaling. Using a modified super-resolution imaging technique (PD-PALM) to assess FSHR complexes in HEK293 cells expressing FSHR, we observed time and concentration-dependent modulation of FSHR oligomerization by FSH glycoforms. High eFSH and FSH21/18 concentrations rapidly dissociated FSHR oligomers into monomers, whereas FSH24 displayed slower kinetics. The FSHR β-arrestin biased agonist, truncated eLHβ (Δ121-149) combined with asparagine56-deglycosylated eLHα (dg-eLHt), increased FSHR homomerization. In contrast, low FSH21/18 and FSH24 concentrations promoted FSHR association into oligomers. Dissociation of FSHR oligomers correlated with time points where higher cAMP production was observed. Taken together, these data suggest that FSH glycosylation may modulate the kinetics and amplitude of cAMP production, in part, by forming distinct FSHR complexes, highlighting potential avenues for novel therapeutic targeting of the FSHR to improve IVF outcomes.
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Affiliation(s)
- Uchechukwu T. Agwuegbo
- School of Life Course and Population Sciences, Department of Women and Children’s Health, Guy’s Campus, King’s College London, London, United Kingdom
| | - Emily Colley
- Institute of Reproductive and Developmental Biology, Imperial College London, London, United Kingdom
| | - Anthony P. Albert
- Vascular Biology Research Centre, Molecular & Clinical Science Research Centre, St George’s University of London, London, United Kingdom
| | - Viktor Y. Butnev
- Department of Biological Sciences, Wichita State University, Wichita, KS, United States
| | - George R. Bousfield
- Department of Biological Sciences, Wichita State University, Wichita, KS, United States
| | - Kim C. Jonas
- School of Life Course and Population Sciences, Department of Women and Children’s Health, Guy’s Campus, King’s College London, London, United Kingdom
- *Correspondence: Kim C. Jonas,
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15
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Vergani GB, Fonseca JFD, Trevizan JT, Pereira VSDA, Garcia AR, Esteves SN, Brandão FZ, Souza-Fabjan JMG, Oliveira MEF. Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes. Anim Reprod Sci 2020; 223:106644. [PMID: 33197710 DOI: 10.1016/j.anireprosci.2020.106644] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 10/23/2022]
Abstract
This study was conducted in ewes to assess effects of human chorionic gonadotropin (hCG) administration after imposing an estrous induction treatment regimen. Ewes (n = 115) were treated with a 60 mg medroxyprogesterone-intravaginal-sponge for 6 d plus 200 IU of equine chorionic gonadotropin (eCG) im and 37.5 μg d-cloprostenol im 36 h before sponge removal (Day 0). After natural mating, ewes having at least one corpus luteum (CL; n = 108) were administered either 1 mL of saline (G-Control; n = 53) or 300 IU of hCG (G-hCG; n = 55) on Day 7.5 after sponge removal (Day 0). Ovarian ultrasonography and blood collection were performed on Days 7.5, 13.5, 17.5, 21.5, and 30.5. Accessory CL (aCL) were observed in 81.5 % (G-hCG) and 0.0 % (G-Control) of ewes (P = 0.0001). Diameter, area, and volume of luteal tissue were greater (P < 0.05) in G-hCG from Day 13.5 to 30.5. Progesterone (P4) concentrations were greater (P < 0.05) on Days 13.5, 17.5, 21.5 and 30.5 for ewes of the G-hCG group. Pregnancy percentage was similar (P = 0.25) between groups [47.1 % (G-control) compared with 60.0 % (G-hCG)], although total number of lambs produced by estrous synchronized ewes was greater (P = 0.005) in ewes of the G-hCG group (90.9 % compared with 66.0 %). In conclusion, hCG administration 7.5 days after sponge removal from Morada Nova ewes during the non-breeding season is an effective treatment to induce aCL formation, improve luteal tissue biometry and P4 concentrations, and to enhance the total number of lambs born.
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Affiliation(s)
- Gabriel Brun Vergani
- Department of Pathobiology and Veterinary Theriogenology, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, SP, Brazil
| | - Jeferson Ferreira da Fonseca
- Embrapa Caprinos e Ovinos, Rodovia MG 133, Km 42, Cep 36.155-000, Coronel Pacheco, MG, Brazil; Departamento de Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, s/n, CEP 36570-000, Viçosa, MG, Brazil.
| | - Juliane Teramachi Trevizan
- Department of Pathobiology and Veterinary Theriogenology, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, SP, Brazil
| | | | - Alexandre Rossetto Garcia
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/nº, Fazenda Canchim, Caixa Postal: 339, CEP: 13560-970, São Carlos, SP, Brazil
| | - Sergio Novita Esteves
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/nº, Fazenda Canchim, Caixa Postal: 339, CEP: 13560-970, São Carlos, SP, Brazil
| | - Felipe Zandonadi Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brasil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | | | - Maria Emilia Franco Oliveira
- Department of Pathobiology and Veterinary Theriogenology, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, SP, Brazil; Embrapa Caprinos e Ovinos, Rodovia MG 133, Km 42, Cep 36.155-000, Coronel Pacheco, MG, Brazil.
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16
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Tera Dolebo A, Melesse A, Porcu C, Getachew T, Haile A, Rouatbi M, Abate Z, Zeleke M, Rischkowsky B, Mwacharo JM, Rekik M. Increased number of large non-atretic follicles and co-dominance effects account for high litter sizes in Bonga sheep. Anim Sci J 2020; 91:e13384. [PMID: 32462805 DOI: 10.1111/asj.13384] [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: 10/30/2019] [Revised: 01/25/2020] [Accepted: 02/06/2020] [Indexed: 11/28/2022]
Abstract
To understand the ovarian basis for prolificacy of Bonga sheep, a total of 31 ewes were selected based on litter size (LS) records and divided into two groups: High Prolificacy (HP) (n = 20) with LS ≥ 2 and Low Prolificacy (LP) (n = 11) with LS = 1. At a synchronized estrus, follicular dynamics were determined using transrectal ultrasonography. Plasma estradiol concentrations were also monitored. In total 27 ewes were observed in estrus being 9/11 LP (82%) and 18/20 HP (90%). On the day of estrus (day 0), the mean number of large follicles was higher (p < .05) in HP (1.78 ± 0.19) than in LP (1.0 ± 0.28) ewes. Prior to estrus, more (p < .05) medium follicles were visible for HP compared to LP ewes. Plasma estradiol concentrations were higher in HP compared to LP ewes (18.91 ± 0.41 vs. 14.51 ± 0.65 pg/ml; p < .05) and similarly was ovulation number (2.3 ± 0.15 vs. 1.28 ± 0. 14; p < .05). Higher ovulation rates and litter size in Bonga sheep are evidenced by the previous presence of more large follicles and the existence of co-dominance effects as most likely medium follicles are selected to ovulate.
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Affiliation(s)
- Asrat Tera Dolebo
- School of Animal and Range Sciences, Hawassa University, Hawassa, Ethiopia
| | - Aberra Melesse
- School of Animal and Range Sciences, Hawassa University, Hawassa, Ethiopia
| | - Cristian Porcu
- University of Sassari, Piazza Università, Sassari, Italy
| | - Tesfaye Getachew
- International Centre for Agricultural Research in the Dry Areas (ICARDA), Addis Ababa, Ethiopia
| | - Aynalem Haile
- International Centre for Agricultural Research in the Dry Areas (ICARDA), Addis Ababa, Ethiopia
| | - Mariem Rouatbi
- Institut National Agronomique de Tunisie, Tunis, Tunisia
| | | | | | - Barbara Rischkowsky
- International Centre for Agricultural Research in the Dry Areas (ICARDA), Addis Ababa, Ethiopia
| | - Joram M Mwacharo
- International Centre for Agricultural Research in the Dry Areas (ICARDA), Addis Ababa, Ethiopia
| | - Mourad Rekik
- International Center for Agricultural Research in the Dry Areas (ICARDA), Amman, Jordan
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17
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A single administration of a long-acting recombinant ovine FSH (roFSH) for cattle superovulation. Theriogenology 2020; 154:66-72. [PMID: 32512315 DOI: 10.1016/j.theriogenology.2020.04.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 04/26/2020] [Indexed: 11/21/2022]
Abstract
A recombinant long-acting ovine follicle stimulating hormone (roFSH) has been devised and its biological effectiveness following a single dose has been assessed in several experiments under field conditions, in pasture-based beef and dairy farming in New Zealand. Owing to the molecular structure of this long-acting roFSH, which includes additional N-glycosylation sites, a single dose combined with a simple CIDR-based superovulatory regime elicits successful ovarian stimulation with averages of 11.8 corpora lutea and of 6.1 good quality embryos collected in cattle. Solid performance of this novel FSH was demonstrated in several beef and dairy breeds which included yearling heifers and mixed age cows, with embryo production results in the same range as those observed nowadays with eight doses of commercial pituitary FSH (pFSH). Viable embryos produced from these collections, when implanted either fresh or frozen and thawed, gave pregnancy rates in recipients similar to those collected from cows and heifers superstimulated with pFSH. Repeated superovulatory treatment of the same cows was not associated with a decrease in ovarian response or embryo yield. The single administration of this long-acting roFSH when combined with a modified simple superovulatory regime has the advantage of reducing animal welfare concerns, lowering labour resource requirements and giving similar results to other commercially prepared pituitary FSH extracts.
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18
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Daly J, Smith H, McGrice HA, Kind KL, van Wettere WH. Towards Improving the Outcomes of Assisted Reproductive Technologies of Cattle and Sheep, with Particular Focus on Recipient Management. Animals (Basel) 2020; 10:E293. [PMID: 32069818 PMCID: PMC7070504 DOI: 10.3390/ani10020293] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/07/2020] [Accepted: 02/11/2020] [Indexed: 12/12/2022] Open
Abstract
The Australian agricultural industry contributes AUD 47 billion to the Australian economy, and Australia is the world's largest exporter of sheep meat and the third largest for beef. Within Australia, sheep meat consumption continues to rise, with beef consumption being amongst the highest in the world; therefore, efficient strategies to increase herd/flock size are integral to the success of these industries. Reproductive management is crucial to increasing the efficiency of Australian breeding programs. The use of assisted reproductive technologies (ARTs) has the potential to increase efficiency significantly. The implementation of multiple ovulation and embryo transfer (MOET) and juvenile in vitro fertilization and embryo transfer (JIVET) in combination with genomic selection and natural mating and AI is the most efficient way to increase genetic gain, and thus increase reproductive efficiency within the Australian livestock industries. However, ARTs are costly, and high variation, particularly between embryo transfer recipients in their ability to maintain pregnancy, is a significant constraint to the widespread commercial adoption of ARTs. The use of a phenotypic marker for the selection of recipients, as well as the better management of recipient animals, may be an efficient and cost-effective means to increase the productivity of the Australian livestock industry.
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Affiliation(s)
- Jamee Daly
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy, SA 5371, Australia; (H.S.); (H.A.M.); (K.L.K.)
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19
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Cordeiro FB, Jarmusch AK, León M, Ferreira CR, Pirro V, Eberlin LS, Hallett J, Miglino MA, Cooks RG. Mammalian ovarian lipid distributions by desorption electrospray ionization-mass spectrometry (DESI-MS) imaging. Anal Bioanal Chem 2020; 412:1251-1262. [PMID: 31953714 DOI: 10.1007/s00216-019-02352-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/27/2019] [Accepted: 12/11/2019] [Indexed: 02/03/2023]
Abstract
Merging optical images of tissue sections with the spatial distributions of molecules seen by imaging mass spectrometry is a powerful approach to better understand the metabolic roles of the mapped molecules. Here, we use histologically friendly desorption electrospray ionization-mass spectrometry (DESI-MS) to map the lipid distribution in tissue sections of ovaries from cows (N = 8), sows (N = 3), and mice (N = 12). Morphologically friendly DESI-MS imaging allows the same sections to be examined for morphological information. Independent of the species, ovarian follicles, corpora lutea, and stroma could be differentiated by principal component analysis, showing that lipid profiles are well conserved among species. As examples of specific findings, arachidonic acid and the phosphatidylinositol PI(38:4), were both found concentrated in the follicles and corpora lutea, structures that promoted ovulation and implantation, respectively. Adrenic acid was spatially located in the corpora lutea, suggesting the importance of this fatty acid in the ovary luteal phase. In summary, lipid information captured by DESI-MS imaging could be related to ovarian structures and data were all conserved among cows, sows, and mice. Further application of DESI-MS imaging to either physiological or pathophysiological models of reproductive conditions will likely expand knowledge of the roles of specific lipids and pathways in ovarian activity and mammalian fertility. Graphical abstract Desorption electrospray ionization-mass spectrometry (DESI-MS) is performed directly from frozen ovarian tissue sections placed onto glass slides. Because the desorption and ionization process of small molecules is so gentle, the tissue architecture is preserved. The sample can then be stained and tissue morphology information can be overlaid with the chemical information obtained by DESI-MS.
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Affiliation(s)
- Fernanda Bertuccez Cordeiro
- Laboratorio para Investigaciones Biomédicas, Facultad de Ciencias de la Vida, Escuela Superior Politécnica del Litoral, ESPOL, 090112, Guayaquil, Ecuador
| | - Alan K Jarmusch
- Department of Chemistry and Center for Analytical Instrumentation Development (CAID), Purdue University, West Lafayette, IN, 47907, USA
- Skaggs School of Pharmacy and Pharmaceutical Sciences and Collaborative Mass Spectrometry Innovation Center, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Marisol León
- Surgery Department, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, 05508-270, Brazil
| | - Christina Ramires Ferreira
- Department of Chemistry and Center for Analytical Instrumentation Development (CAID), Purdue University, West Lafayette, IN, 47907, USA.
- Bindley Bioscience Center, Purdue University, West Lafayette, IN, 47907-1393, USA.
| | - Valentina Pirro
- Department of Chemistry and Center for Analytical Instrumentation Development (CAID), Purdue University, West Lafayette, IN, 47907, USA
| | - Livia S Eberlin
- Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Judy Hallett
- Purdue Center for Cancer Research Transgenic Mouse Core Facility, Purdue University, 201 S. University Street, West Lafayette, IN, 47907, USA
| | - Maria Angelica Miglino
- Surgery Department, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, 05508-270, Brazil
| | - Robert Graham Cooks
- Department of Chemistry and Center for Analytical Instrumentation Development (CAID), Purdue University, West Lafayette, IN, 47907, USA
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20
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Investigation of ram effect and eCG usage in progesterone based oestrous synchronization protocols on fertility of ewes following fixed time artificial insemination. Small Rumin Res 2020. [DOI: 10.1016/j.smallrumres.2019.106034] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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21
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Fry RC. Gonadotropin priming before OPU: What are the benefits in cows and calves? Theriogenology 2020; 150:236-240. [PMID: 32088044 DOI: 10.1016/j.theriogenology.2020.01.068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 01/28/2020] [Indexed: 11/30/2022]
Abstract
Oocyte pick up (OPU) coupled with IVP produce over 1 million cattle embryos per year and has been most successful in Bos indicus derived breeds that contain large numbers of antral follicles on their ovaries. More recently, this technology has been applied on a large scale to Bos taurus cattle, where hormone manipulation is generally employed to improve the developmental competence of the COCs. Hormone manipulation, and specifically the use of FSH priming before OPU, has been strategically used in the intensively managed dairy cow, where genomic evaluation and juvenile IVP can produce additional significant genetic gains.
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KHARCHE SURESHDINKAR, JENA DAYANIDHI, GANGWAR CHETNA, KHATTI AMIT, BALAMURUGAN B. Role of certain growth factors and hormones in folliculogenesis. THE INDIAN JOURNAL OF ANIMAL SCIENCES 2020. [DOI: 10.56093/ijans.v89i12.96617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Folliculogenesis is an inextricable process associated with female fertility and infertility cases. This process involves many events at cellular and molecular level in a highly orchestrated fashion which culminates with ovulation. Various factors like hormonal factors, growth factors, role of ovarian micro environment, diseases of reproductive tract etc. influence the process of folliculogenesis in systematic manner. The function and mechano-biology of these growth factors and hormones have been studied by many researchers. This review discusses about those hormonal and growth factors which are involved in folliculogenesis process.
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Umer S, Sammad A, Zou H, Khan A, Weldegebriall Sahlu B, Hao H, Zhao X, Wang Y, Zhao S, Zhu H. Regulation of AMH, AMHR-II, and BMPs (2,6) Genes of Bovine Granulosa Cells Treated with Exogenous FSH and Their Association with Protein Hormones. Genes (Basel) 2019; 10:E1038. [PMID: 31842416 PMCID: PMC6947534 DOI: 10.3390/genes10121038] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/06/2019] [Accepted: 12/10/2019] [Indexed: 12/14/2022] Open
Abstract
Anti-Mullerian hormone (AMH) is an important reproductive marker of ovarian reserve produced by granulosa cells (GCs) of pre-antral and early-antral ovarian follicles in several species, including cattle. This hormone plays a vital role during the recruitment of primordial follicles and follicle stimulating hormone (FSH)-dependent follicular growth. However, the regulatory mechanism of AMH expression in follicles is still unclear. In this study, we compared the expression of AMH, AMHR-II, BMP2, BMP6, FSHR, and LHCGR genes during follicular development. In-vitro expression study was performed with and without FSH for AMH, AMHR-II, BMP2, and BMP6 genes in bovine GCs which were isolated from 3-8 mm follicles. Association among the mRNA expression and hormone level was estimated. GCs were collected from small (3-8 mm), medium (9-12 mm) and large size (13 to 24 mm) follicles before, during onset, and after deviation, respectively. Further, mRNA expression, hormones (AMH, FSH, and LH), apoptosis of GCs, and cell viability were detected by qRT-PCR, ELISA, flow cytometry, and spectrophotometry. AMH, AMHR-II, BMP2, and FSHR genes were highly expressed in small and medium follicles as compared to large ones. In addition, the highest level of AMH protein (84.14 ± 5.41 ng/mL) was found in medium-size follicles. Lower doses of FSH increased the viability of bovine GCs while higher doses repressed them. In-vitro cultured GCs treated with FSH significantly increased the AMH, AMHR-II, and BMP2 expression levels at lower doses, while expression levels decreased at higher doses. We found an optimum level of FSH (25 ng/mL) which can significantly enhance AMH and BMP2 abundance (p < 0.05). In summary, AMH, AMHR-II, and BMP2 genes showed a higher expression in follicles developed in the presence of FSH. However, lower doses of FSH demonstrated a stimulatory effect on AMH and BMP2 expression, while expression started to decline at the maximum dose. In this study, we have provided a better understanding of the mechanisms regulating AMH, AMHR II, and BMP2 signaling in GCs during folliculogenesis, which would improve the outcomes of conventional assisted reproductive technologies (ARTs), such as superovulation and oestrus synchronization in bovines.
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MESH Headings
- Animals
- Anti-Mullerian Hormone/genetics
- Anti-Mullerian Hormone/metabolism
- Bone Morphogenetic Proteins/genetics
- Bone Morphogenetic Proteins/metabolism
- Cattle/genetics
- Estradiol/metabolism
- Female
- Follicle Stimulating Hormone/genetics
- Follicular Fluid/metabolism
- Gene Expression Regulation/genetics
- Gene Expression Regulation, Developmental/genetics
- Granulosa Cells/metabolism
- Ovarian Follicle/metabolism
- RNA, Messenger/genetics
- Receptors, FSH/genetics
- Receptors, FSH/metabolism
- Receptors, LH/genetics
- Receptors, LH/metabolism
- Receptors, Peptide/genetics
- Receptors, Peptide/metabolism
- Receptors, Transforming Growth Factor beta/genetics
- Receptors, Transforming Growth Factor beta/metabolism
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Affiliation(s)
- Saqib Umer
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (S.U.); (H.Z.); (B.W.S.); (H.H.); (X.Z.); (S.Z.)
| | - Abdul Sammad
- Key Laboratory of Animal Genetics, Breeding and Reproduction, CAST, China Agricultural University, Beijing 100193, China; (A.S.); (A.K.); (Y.W.)
| | - Huiying Zou
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (S.U.); (H.Z.); (B.W.S.); (H.H.); (X.Z.); (S.Z.)
| | - Adnan Khan
- Key Laboratory of Animal Genetics, Breeding and Reproduction, CAST, China Agricultural University, Beijing 100193, China; (A.S.); (A.K.); (Y.W.)
| | - Bahlibi Weldegebriall Sahlu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (S.U.); (H.Z.); (B.W.S.); (H.H.); (X.Z.); (S.Z.)
| | - Haisheng Hao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (S.U.); (H.Z.); (B.W.S.); (H.H.); (X.Z.); (S.Z.)
| | - Xueming Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (S.U.); (H.Z.); (B.W.S.); (H.H.); (X.Z.); (S.Z.)
| | - Yachun Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, CAST, China Agricultural University, Beijing 100193, China; (A.S.); (A.K.); (Y.W.)
| | - Shanjiang Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (S.U.); (H.Z.); (B.W.S.); (H.H.); (X.Z.); (S.Z.)
| | - Huabin Zhu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (S.U.); (H.Z.); (B.W.S.); (H.H.); (X.Z.); (S.Z.)
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Morrell BC, Zhang L, Schütz LF, Perego MC, Maylem ERS, Spicer LJ. Regulation of the transcription factor E2F8 gene expression in bovine ovarian cells. Mol Cell Endocrinol 2019; 498:110572. [PMID: 31493442 DOI: 10.1016/j.mce.2019.110572] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 09/01/2019] [Accepted: 09/03/2019] [Indexed: 12/31/2022]
Abstract
Overexpression of the transcription factor, E2F8, has been associated with ovarian cancer. Objectives of this study were to determine: 1) if E2F8 gene expression in granulosa cells (GC) and theca cells (TC) change with follicular development, and 2) if E2F8 mRNA abundance in TC and GC is hormonally regulated. Using real-time PCR, E2F8 mRNA abundance in GC and TC was greater (P < 0.05) in small than large follicles. FGF9 induced an increase (P < 0.05) in E2F8 mRNA abundance by 1.6- to 7-fold in large-follicle (8-20 mm) TC and GC as well as in small-follicle (1-5 mm) GC. Abundance of E2F8 mRNA in TC was increased (P < 0.05) with FGF2, FGF9 or VEGFA treatments alone in vitro, and concomitant treatment of VEGFA with FGF9 increased (P < 0.05) abundance of E2F8 mRNA above any of the singular treatments; BMP4, WNT3A and LH were without effect. IGF1 amplified the stimulatory effect of FGF9 on E2F8 mRNA abundance by 2.7-fold. Collectively, our studies show for the first time that follicular E2F8 is developmentally and hormonally regulated indicating that E2F8 may be involved in follicular development.
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Affiliation(s)
- Breanne C Morrell
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Lingna Zhang
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Luis F Schütz
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - M Chiara Perego
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Excel Rio S Maylem
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Leon J Spicer
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA.
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Nivet AL, Dufort I, Gilbert I, Sirard MA. Short-term effect of FSH on gene expression in bovine granulosa cells in vitro. Reprod Fertil Dev 2019. [PMID: 29529392 DOI: 10.1071/rd17469] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
In reproduction, FSH is one of the most important hormones, especially in females, because it controls the number of follicles and the rate of follicular growth. Although several studies have examined the follicular response at the transcriptome level, it is difficult to obtain a clear and complete picture of the genes responding to an increase in FSH in an in vivo context because follicles undergo rapid morphological and physical changes during their growth. To help define the transcriptome downstream response to FSH, an in vitro model was used in the present study to observe the short-term (4h) cellular response. Gene expression analysis highlighted a set of novel transcripts that had not been reported previously as being part of the FSH response. Moreover, the results of the present study indicate that the epithelial to mesenchymal transition pathway is inhibited by short-term FSH stimuli, maintaining follicles in a growth phase and preventing differentiation. Modulating gene expression in vitro has physiological limitations, but it can help assess the potential downstream response and begin the mapping of the granulosa cell transcriptome in relation to FSH. This information is a key feature to help discriminate between the effects of FSH and LH, or to elucidate the overlapping of insulin-like growth factor 1 and FSH in the granulosa mitogenic response.
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Affiliation(s)
- Anne-Laure Nivet
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Faculté des sciences de l'agriculture et de l'alimentation, Département des sciences animales, Université Laval, Québec, QC G1V 0A6, Canada
| | - Isabelle Dufort
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Faculté des sciences de l'agriculture et de l'alimentation, Département des sciences animales, Université Laval, Québec, QC G1V 0A6, Canada
| | - Isabelle Gilbert
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Faculté des sciences de l'agriculture et de l'alimentation, Département des sciences animales, Université Laval, Québec, QC G1V 0A6, Canada
| | - Marc-André Sirard
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Faculté des sciences de l'agriculture et de l'alimentation, Département des sciences animales, Université Laval, Québec, QC G1V 0A6, Canada
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Histological Feature of Ovarian Structures Throughout the Reproductive Cycle in Alpine Goats (Capra Hircus). MACEDONIAN VETERINARY REVIEW 2019. [DOI: 10.2478/macvetrev-2018-0027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
The knowledge about ovarian physiology in small ruminants is still limited, especially when compared to other domestic species. Ovarian function in goats is mainly assessed by ultrasonographic techniques, whereas a quali-quantitative feature of the follicular and luteal structures throughout the reproductive cycle in naturally cycling goats is scarce. This study provides a detailed description of the functional morphology and size of 742 ovarian structures (follicles, corpora hemorrhagica and corpora lutea) in relation to the oestrus phase, the body weight and the age of 25 Alpine goats (Capra hircus). The current study demonstrated that, the number and size of the follicles were related to the stage of the reproductive cycle (P < 0.0001). Also, the mean number of follicles was high during both prepubertal anestrus and diestrus, whereas it was low in the oestrus. Large (3-4 mm in diameter) and very large follicles (> 4 mm) (P < 0.001), and small follicles (< 2 mm; P < 0.05) varied throughout the reproductive cycle, while medium follicles (2-3 mm) were invariably observed. Large and very large follicles were predominant during the diestrus phase and small follicles in the prepubertal anestrus. It is evident from the current study that the number of follicles (P < 0.05) was significantly affected with both body weight and age. On the other hand, the size of follicles was significantly affected with body weight only (P < 0.0001). These results could contribute to a deeper understanding of ovarian transformations with important implications in assisted reproductive technologies, thereby concurring in advancing the efficiency of ultrasound in breeding programs for this species.
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Manjunatha B, Al-Hosni A, Al-Bulushi S. Simplified superovulation protocols in dromedary camels (Camelus dromedarius). Theriogenology 2019; 126:214-221. [DOI: 10.1016/j.theriogenology.2018.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 12/01/2018] [Accepted: 12/02/2018] [Indexed: 10/27/2022]
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28
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Wohlres-Viana S, Arashiro EKN, Minare TP, Fernandes CAC, Grazia JGV, Siqueira LGB, Machado MA, Viana JHM. Differential expression of LHCGR and its isoforms is associated to the variability in superovulation responses of Gir cattle. Theriogenology 2018; 126:68-74. [PMID: 30530160 DOI: 10.1016/j.theriogenology.2018.12.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 11/19/2018] [Accepted: 12/01/2018] [Indexed: 10/27/2022]
Abstract
The aim of this study was to evaluate the pattern of expression of LHCGR isoforms in Gir heifers characterized as good (10.3 ± 1.2 ova/embryos per flush, n = 5) or poor responders (1.1 ± 0.3 ova/embryos per flush, n = 5) to superovulation protocols. In both groups, an adapted ultrasound-guided follicular aspiration system was used to collect granulosa cells from 8 mm follicles formed either during a synchronized, non-stimulated follicular wave (no stimulation control, NS) or on the fourth day of a superovulation protocol (SOV) induced with 200 IU of pFSH. The recovered follicular fluid was centrifuged and granulosa cells were washed with NaCl 0.9% and kept in RNAlater®. RNA extraction was performed using a commercial RNeasy Micro Kit and eluted samples were quantified and reverse transcribed using the commercial Superscript III kit. cDNA samples were amplified by real-time PCR using a primer to target LH/hCG receptor gene - not selective for LHCGR isoforms (total LHCGR) - and four sets of isoforms selective primers (S1, S10, S10 + 11, and S11). Analyses were performed using the REST software and expression levels are shown as mean ± SEM. Under physiological conditions (NS), poor responders had a higher expression of total LHCGR (4.9 ± 1.7 fold-change, P < 0.01) as well as isoforms S10, S11 and S10 + 11, compared to good responders. In both phenotypes, superovulation down-regulated total LHCGR expression (-0.5 ± 0.2 and -0.9 ± 0.0 for good and poor responders, respectively; P < 0.05). However, in poor responders the exogenous FSH treatment up-regulated the S10 (2.4 ± 2.0; P < 0.05), S10 + 11 (3.8 ± 3.2; P < 0.01), and S1 isoforms (1.8 ± 1.3; P < 0.05), compared to good responders We conclude that down-regulation of total LHCGR, associated to up-regulation of their inactive isoforms, may have compromised follicle development and thus contributed to the low efficiency of superovulation in heifers with a poor responder phenotype.
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Affiliation(s)
- S Wohlres-Viana
- Universidade Federal de Juiz de Fora, Juiz de Fora, MG, 36036-900, Brazil
| | - E K N Arashiro
- Universidade Federal Fluminense, Niteroi, RJ, 24230-340, Brazil
| | - T P Minare
- Universidade José do Rosário Vellano, Alfenas, MG, 37130-000, Brazil
| | - C A C Fernandes
- Universidade José do Rosário Vellano, Alfenas, MG, 37130-000, Brazil; Biotran Biotecnologia Animal LTDA, Alfenas, MG, 37130-000, Brazil
| | - J G V Grazia
- Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - L G B Siqueira
- Embrapa Gado de Leite, Juiz de Fora, MG, 36038-330, Brazil
| | - M A Machado
- Universidade Federal de Juiz de Fora, Juiz de Fora, MG, 36036-900, Brazil; Embrapa Gado de Leite, Juiz de Fora, MG, 36038-330, Brazil
| | - J H M Viana
- Universidade José do Rosário Vellano, Alfenas, MG, 37130-000, Brazil; Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, 70770-901, Brazil.
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Carrasco RA, Singh J, Adams GP. The relationship between gonadotropin releasing hormone and ovulation inducing factor/nerve growth factor receptors in the hypothalamus of the llama. Reprod Biol Endocrinol 2018; 16:83. [PMID: 30170607 PMCID: PMC6119247 DOI: 10.1186/s12958-018-0402-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 08/24/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A molecule identical to nerve growth factor, with ovulation-inducing properties has been discovered in the seminal plasma of South American camelids (ovulation-inducing factor/nerve growth factor; OIF/NGF). We hypothesize that the ovulatory effect of OIF/NGF is initiated at the level of the hypothalamus, presumably by GnRH neurons. The objective of the present study was to determine the structural relationship between GnRH neurons and neurons expressing high- and low-affinity receptors for NGF (i.e., TrkA and p75, respectively) in the hypothalamus. METHODS Mature llamas (n = 4) were euthanized and their hypothalamic tissue was fixed, sectioned, and processed for immunohistochemistry on free-floating sections. Ten equidistant sections per brain were double stained for immunofluorescence detection of TrkA and GnRH, or p75 and GnRH. RESULTS Cells immunoreactive to TrkA were detected in most hypothalamic areas, but the majority of cells were detected in the diagonal band of Broca (part of the ventral forebrain) and the supraoptic nuclei and periventricular area. The number of cells immunoreactive to p75 was highest in the diagonal band of Broca and lateral preoptic areas and least in more caudal areas of the hypothalamus (p < 0.05) in a pattern similar to that of TrkA. A low proportion of GnRH neurons were immunoreactive to TrkA (2.5% of total GnRH cells), and no co-localization between GnRH and p75 was detected. GnRH neuron fibers were detected only occasionally in proximity to TrkA immunopositive neurons. CONCLUSIONS Results do not support the hypothesis that the effect of OIF/NGF is driven by a direct interaction with GnRH neurons, but rather provide rationale for the hypothesis that interneurons exist in the hypothalamus that mediate OIF/NGF-induced ovulation.
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Affiliation(s)
- Rodrigo A. Carrasco
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 campus drive, Saskatoon, Saskatchewan S7N5B4 Canada
| | - Jaswant Singh
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 campus drive, Saskatoon, Saskatchewan S7N5B4 Canada
| | - Gregg P. Adams
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 campus drive, Saskatoon, Saskatchewan S7N5B4 Canada
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Ortega I, García-Velasco JA, Pellicer A. Ovarian manipulation in ART: going beyond physiological standards to provide best clinical outcomes. J Assist Reprod Genet 2018; 35:1751-1762. [PMID: 30056596 DOI: 10.1007/s10815-018-1258-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 07/03/2018] [Indexed: 12/11/2022] Open
Abstract
Current knowledge on ovarian physiology has challenged the traditional concept of folliculogenesis, creating the basis for novel ovarian stimulation protocols in assisted reproduction technology. The purpose of this review was to evaluate the efficacy of novel clinical interventions that could aid clinicians in individualizing their protocols to patients' characteristics and personal situations. We conducted a literature review of the available evidence on new approaches for ovarian stimulation from both retrospective and prospective studies in the PubMed database. Here, we present some of the most important interventions, including follicle growth in the gonadotropin-independent and dependent stage, manipulation of estradiol production throughout ovarian stimulation, control of mid-cycle gonadotropin surges, and luteal phase support after different stimulation protocols and trigger agents. The latest research on IVF has moved physicians away from the classical physiology, allowing the development of new strategies to decouple organ functions from the female reproductive system and challenging the traditional concept of IVF.
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Affiliation(s)
- Israel Ortega
- IVI-Madrid, Madrid, Spain. .,Instituto de Investigación Sanitaria La Fé, Valencia, Spain.
| | - Juan A García-Velasco
- IVI-Madrid, Madrid, Spain.,Instituto de Investigación Sanitaria La Fé, Valencia, Spain.,Rey Juan Carlos University, Madrid, Spain.,IdiPAZ, Madrid, Spain
| | - Antonio Pellicer
- Instituto de Investigación Sanitaria La Fé, Valencia, Spain.,Rey Juan Carlos University, Madrid, Spain.,IdiPAZ, Madrid, Spain.,IVI-Roma, Rome, Italy
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31
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Uhde K, van Tol HTA, Stout TAE, Roelen BAJ. Exposure to elevated glucose concentrations alters the metabolomic profile of bovine blastocysts. PLoS One 2018; 13:e0199310. [PMID: 29924852 PMCID: PMC6010268 DOI: 10.1371/journal.pone.0199310] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 06/05/2018] [Indexed: 12/13/2022] Open
Abstract
Chronically high blood glucose concentrations are a characteristic of diabetes mellitus. Maternal diabetes affects the metabolism of early embryos and can cause a delay in development. To mimic maternal diabetes, bovine in vitro fertilization and embryo culture were performed in fertilization medium and culture medium containing 0.5, 2, 3, and 5 mM, glucose whereas under control conditions, the medium was glucose free (0 mM). Compared to control conditions (0 mM, 31%), blastocyst development was decreased to 23% with 0.5 and 2 mM glucose. Presence of 3 or 5 mM glucose in the medium resulted in decreased blastocyst rates (20% and 10% respectively). The metabolomic profile of resulting day 8 blastocysts was analysed by UPLC-MS/MS, and compared to that of blastocysts cultured in control conditions. Elevated glucose concentrations stimulated an increase in glycolysis and activity of the hexosamine pathway, which is involved in protein glycosylation. However, components of the tricarboxylic acid cycle, such as citrate and alpha-ketoglutarate, were reduced in glucose stimulated blastocysts, suggesting that energy production from pyruvate was inefficient. On the other hand, activity of the polyol pathway, an alternative route to energy generation, was increased. In short, cattle embryos exposed to elevated glucose concentrations during early development showed changes in their metabolomic profile consistent with the expectations of exposure to diabetic conditions.
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Affiliation(s)
- Karen Uhde
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Helena T. A. van Tol
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Tom A. E. Stout
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
| | - Bernard A. J. Roelen
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
- * E-mail:
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Hormonal stimulation in 4 to 7 months old Nelore (Bos taurus indicus) females improved ovarian follicular responses but not the in vitro embryo production. Theriogenology 2018; 118:130-136. [PMID: 29906662 DOI: 10.1016/j.theriogenology.2018.05.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 05/26/2018] [Accepted: 05/29/2018] [Indexed: 01/08/2023]
Abstract
The inclusion of pre-pubertal bovine females in reproductive management could allow in vitro embryo production and reduce generation interval, thereby causing faster genetic gain of the herd. However, oocytes of pre-pubertal females have lower competence, blastocyst production, and pregnancy rates than those collected from pubertal animals. This study aimed to evaluate the effect of an induced hormonal stimulation on the serum concentrations of Anti-Mullerian hormone (AMH) and FSH, ovarian responses, ovum pick up (OPU), and in vitro produced embryos (IVP) from oocytes obtained from four-to seven-months old Nelore female cattle. In a crossover design, these females were randomly allocated into: 1) Treated Group (TG, n = 9): the animals were subjected to a hormonal protocol (implanted progesterone device, estradiol benzoate, LH, and FSH) from Day 0 (the start of the treatment) to Day 7 (OPU day), and 2) Control Group (CG, n = 9): the females did not receive any hormonal stimulation, but they had ablation of their largest follicles on Day 2 of experiment. Blood collection for serum FSH measurements was done on Days 5, 6, 7, and 8, and collection for serum AMH measurements was done on Days 5 and 8. As hypothesized, TG had higher serum FSH concentrations (p < 0.05) on Day 5 (1.16 ± 0.31 ng/mL), Day 6 (1.21 ± 0.45 ng/mL), and Day 7 (0.95 ± 0.26 ng/mL) than CG (0.56 ± 0.17 ng/mL on Day 5, 0.60 ± 0.25 ng/mL on Day 6, and 0.60 ± 0.14 ng/mL on Day 7). However, serum AMH concentrations were neither significantly different (p > 0.05) between CG and TG, nor between the collection days. Hormonal stimulation also increased (p < 0.05) total follicular population (20.0 ± 4.95 CG vs 26.66 ± 4.24 TG), ovarian diameter (13.08 ± 1.0 mm CG vs 14.81 ± 1.38 mm TG) and number of follicles ≥2.5 mm (6.88 ± 2.14 CG vs 11.55 ± 4.09 TG). In TG, grades I and II oocytes predominated, whereas, in CG grades III and IV oocytes were more abundant (p < 0.05). No significant increases (p > 0.05) in the cleavage (49.33% CG vs 51.42% TG), cleavage > 4 cells (9.33% CG vs 16.19% TG), and blastocysts rates (1.33% CG vs 8.57% TG) were seen in TG. This hormonal protocol increased serum FSH concentrations that possibly contributed to increases in the observed follicle, as well as improving oocyte quality. This exogenous hormonal stimulation increased available oocytes numbers for IVP, despite no increase in the in vitro embryo production efficiency.
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Pande HO, Tesfaye D, Hoelker M, Gebremedhn S, Held E, Neuhoff C, Tholen E, Schellander K, Wondim DS. MicroRNA-424/503 cluster members regulate bovine granulosa cell proliferation and cell cycle progression by targeting SMAD7 gene through activin signalling pathway. J Ovarian Res 2018; 11:34. [PMID: 29716627 PMCID: PMC5930509 DOI: 10.1186/s13048-018-0410-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 04/23/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The granulosa cells are indispensable for follicular development and its function is orchestrated by several genes, which in turn posttranscriptionally regulated by microRNAs (miRNA). In our previous study, the miRRNA-424/503 cluster was found to be highly abundant in bovine granulosa cells (bGCs) of preovulatory dominant follicle compared to subordinate counterpart at day 19 of the bovine estrous cycle. Other study also indicated the involvement of miR-424/503 cluster in tumour cell resistance to apoptosis suggesting this miRNA cluster may involve in cell survival. However, the role of miR-424/503 cluster in granulosa cell function remains elusive Therefore, this study aimed to investigate the role of miRNA-424/503 cluster in bGCs function using microRNA gain- and loss-of-function approaches. RESULTS The role of miR-424/503 cluster members in granulosa cell function was investigated by overexpressing or inhibiting its activity in vitro cultured granulosa cells using miR-424/503 mimic or inhibitor, respectively. Luciferase reporter assay showed that SMAD7 and ACVR2A are the direct targets of the miRNA-424/503 cluster members. In line with this, overexpression of miRNA-424/503 cluster members using its mimic and inhibition of its activity by its inhibitor reduced and increased, respectively the expression of SMAD7 and ACVR2A. Furthermore, flow cytometric analysis indicated that overexpression of miRNA-424/503 cluster members enhanced bGCs proliferation by promoting G1- to S- phase cell cycle transition. Modulation of miRNA-424/503 cluster members tended to increase phosphorylation of SMAD2/3 in the Activin signalling pathway. Moreover, sequence specific knockdown of SMAD7, the target gene of miRNA-424/503 cluster members, using small interfering RNA also revealed similar phenotypic and molecular alterations observed when miRNA-424/503 cluster members were overexpressed. Similarly, to get more insight about the role of miRNA-424/503 cluster members in activin signalling pathway, granulosa cells were treated with activin A. Activin A treatment increased cell proliferation and downregulation of both miRNA-424/503 members and its target gene, indicated the presence of negative feedback loop between activin A and the expression of miRNA-424/503. CONCLUSION This study suggests that the miRNA-424/503 cluster members are involved in regulating bovine granulosa cell proliferation and cell cycle progression. Further, miRNA-424/503 cluster members target the SMAD7 and ACVR2A genes which are involved in the activin signalling pathway.
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Affiliation(s)
- Hari Om Pande
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Dawit Tesfaye
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany.,Center of Integrated Dairy Research, University of Bonn, Bonn, Germany
| | - Michael Hoelker
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany.,Teaching and Research Station Frankenforst, Faculty of Agriculture, University of Bonn, Königswinter, Germany.,Center of Integrated Dairy Research, University of Bonn, Bonn, Germany
| | - Samuel Gebremedhn
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Eva Held
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany.,Teaching and Research Station Frankenforst, Faculty of Agriculture, University of Bonn, Königswinter, Germany
| | - Christiane Neuhoff
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Ernst Tholen
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Karl Schellander
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany.,Center of Integrated Dairy Research, University of Bonn, Bonn, Germany
| | - Dessie Salilew Wondim
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany.
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de Graaff W, Grimard B. Progesterone-releasing devices for cattle estrus induction and synchronization: Device optimization to anticipate shorter treatment durations and new device developments. Theriogenology 2018; 112:34-43. [DOI: 10.1016/j.theriogenology.2017.09.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 09/15/2017] [Accepted: 09/19/2017] [Indexed: 11/24/2022]
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Characterization of the ovarian preantral follicle populations and its correlation with age and nutritional status in Brazilian Northeastern donkeys (Equus assinus). Anim Reprod Sci 2017; 187:193-202. [DOI: 10.1016/j.anireprosci.2017.11.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 10/23/2017] [Accepted: 11/06/2017] [Indexed: 11/20/2022]
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Viudes-de-Castro MP, Marco-Jiménez F, Cedano-Castro JI, Vicente JS. Effect of corifollitropin alfa supplemented with or without LH on ovarian stimulation and embryo viability in rabbit. Theriogenology 2017; 98:68-74. [DOI: 10.1016/j.theriogenology.2017.05.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 05/03/2017] [Accepted: 05/03/2017] [Indexed: 11/25/2022]
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Andriyanto, Amrozi, Rahminiwati M, Boediono A, Manalu W. Optimum dose and time of pregnant mare serum gonadotropin injections in Kacang goats to increase endogenous secretion of estrogen and progesterone without superovulation response. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2017.02.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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MicroRNA Expression in Bovine Cumulus Cells in Relation to Oocyte Quality. Noncoding RNA 2017; 3:ncrna3010012. [PMID: 29657284 PMCID: PMC5832000 DOI: 10.3390/ncrna3010012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 02/23/2017] [Accepted: 03/07/2017] [Indexed: 12/23/2022] Open
Abstract
Cumulus cells play an essential role during oocyte maturation and the acquisition of fertilizability and developmental competence. Micro(mi)RNAs can post-transcriptionally regulate mRNA expression, and we hypothesized that miRNA profiles in cumulus cells could serve as an indicator of oocyte quality. Cumulus cell biopsies from cumulus-oocyte-complexes that either yielded a blastocyst or failed to cleave after exposure to sperm cells were analyzed for miRNA expression. On average, 332 miRNA species with more than 10 reads and 240 miRNA species with more than 50 reads were identified in cumulus cells; this included nine previously undescribed microRNAs. The most highly expressed miRNAs in cumulus cells were miR-21, members of the let-7 family and miR-155. However, no repeatable differences in miRNA expression between the cumulus cells from oocytes that became blastocysts versus those from non-cleaved oocytes were identified. Further examination of individual cumulus cell samples showed a wide variability in miRNA expression level. We therefore conclude that miRNA expression in cumulus cells cannot be used as an oocyte quality marker.
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Mpebe NA, Gonzalez-Bulnes A, Lehloenya KC. Effect of breed and follicular status on response to superovulation in South African goats. JOURNAL OF APPLIED ANIMAL RESEARCH 2017. [DOI: 10.1080/09712119.2016.1277530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Nare Abrina Mpebe
- Department of Animal Science, Tshwane University of Technology, Pretoria, South Africa
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40
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Komatsu K, Masubuchi S. Observation of the dynamics of follicular development in the ovary. Reprod Med Biol 2016; 16:21-27. [PMID: 29259446 PMCID: PMC5715870 DOI: 10.1002/rmb2.12010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 06/09/2016] [Indexed: 12/26/2022] Open
Abstract
The number of ovulated oocytes is different among mammals but does not vary much within the same species. In order to sustain periodic ovulation, follicular development must be coordinated at the tissue level. Elucidating the regulatory mechanisms of follicular development is difficult because the ovary has a complicated structure and it takes a long time for primordial follicles to develop into Graafian follicles. Therefore, it is not possible to observe follicular development by conventional experiments. The authors previously developed a new ovarian tissue culture method that enabled the observation of follicular development from the early follicle stage. These findings indicated that follicular interactions are important in regulating follicular development and ovulation. This review describes the current methods of observing follicular development in the ovary and the regulatory mechanisms of follicular development.
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Affiliation(s)
- Kouji Komatsu
- Department of PhysiologyAichi Medical UniversityAichiJapan
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41
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The impact of ovarian stimulation protocol on oocyte quality, subsequent in vitro embryo development, and pregnancy after transfer to recipients in Eld's deer (Rucervus eldii thamin). Theriogenology 2016; 91:134-144. [PMID: 28215678 DOI: 10.1016/j.theriogenology.2016.12.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 12/17/2016] [Accepted: 12/21/2016] [Indexed: 11/22/2022]
Abstract
Propagating genetically valuable individuals through oocyte collection, in vitro fertilization (IVF) and embryo transfer is critical to maintain sustainable populations of the endangered Eld's deer. The objectives of this study were to assess the impact of exogenous FSH injections on (1) the number and in vitro competence of oocytes collected and (2) the developmental potential of resulting IVF embryos after transfer into recipients during the breeding season (February-April). In a pilot experiment, estrus synchronization was conducted in three surplus females (using intravaginal progesterone-releasing devices, CIDRG for 14 days and injections of buserelin (a GnRH agonist). Five days after CIDR removal, ovaries were excised, minced and a total of 133 oocytes were recovered. Following in vitro maturation (IVM) and IVF, 63% of the oocytes formed embryos but only 5% reached the blastocyst stage. In a subsequent study, follicle numbers and diameters were compared between synchronized does stimulated with 0 or 80 mg FSH (-FSH and +FSH; n = 8 does in each group) and oocytes collected either by laparoscopic ovum pick-up or ovariectomy. FSH stimulation increased the main follicular diameter from 2-3 mm to 4-5 mm (P < 0.05) but not the oocyte number (∼20/donor) or the percentage of good quality oocytes (57%) regardless of the treatment. FSH stimulation did not either affect the percentage of cleaved embryos after IVF (25-35%; P > 0.05). Lastly, embryos at the 2-to 8-cell stage (from either + FSH or -FSH groups) were transferred into the oviducts of 11 synchronized recipients. With the +FSH embryos, three pregnancies failed between 90 and 120 days of gestation and two fawns that were born preterm (Days 215 and 224 of gestation) died at birth. In the -FSH group one healthy female fawn was born on Day 234 of gestation. This is the first report of a successful in vitro embryo production and subsequent birth of a live Eld's deer fawn. Further investigations are required to improve IVM/IVF success and the developmental potential of the embryos.
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Loureiro B, Ereno RL, Favoreto MG, Barros CM. Expression of androgen-producing enzyme genes and testosterone concentration in Angus and Nellore heifers with high and low ovarian follicle count. Theriogenology 2016; 86:523-7. [DOI: 10.1016/j.theriogenology.2016.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 01/12/2016] [Accepted: 02/01/2016] [Indexed: 11/25/2022]
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43
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Sirard MA. Somatic environment and germinal differentiation in antral follicle: The effect of FSH withdrawal and basal LH on oocyte competence acquisition in cattle. Theriogenology 2016; 86:54-61. [DOI: 10.1016/j.theriogenology.2016.04.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 12/10/2015] [Accepted: 03/14/2016] [Indexed: 01/12/2023]
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44
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Grzesiak M, Knapczyk-Stwora K, Luck MR, Mobasheri A, Slomczynska M. Effect of Prenatal and Neonatal Anti-Androgen Flutamide Treatment on Aquaporin 5 Expression in the Adult Porcine Ovary. Reprod Domest Anim 2015; 51:105-13. [PMID: 26661749 DOI: 10.1111/rda.12652] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 11/12/2015] [Indexed: 02/06/2023]
Abstract
The growth of ovarian follicles is accompanied by fluid-filled antrum formation. Water movement within the follicular wall is predominantly transcellular via membranous water channels named aquaporins (AQPs). Androgens are important regulators of mammalian folliculogenesis, and their prenatal and/or neonatal deficiency affects female fertility in adulthood. Therefore, this study was performed to determine whether gestational or neonatal exposure to the anti-androgen flutamide influences androgen-dependent AQP5 expression in pre-antral and large antral follicles of adult pigs. Flutamide was injected into pregnant gilts between days 80 and 88 of gestation and into female piglets between days 2 and 10 post-natally. The ovaries were collected from flutamide-treated and non-treated (control) sexually mature pigs. In pre-antral follicles, AQP5 mRNA and protein levels were both downregulated following maternal (p < 0.01 and p < 0.01, respectively) and neonatal (p < 0.01 and p < 0.01, respectively) flutamide exposure. Likewise, the expression of mRNA (p < 0.01 and p < 0.001, respectively) and protein (p < 0.05 and p < 0.01, respectively) for AQP5 were diminished in large antral follicles in both groups. Immunohistochemistry showed decreased intensity of AQP5 immunoreaction in pre-antral (p < 0.01) and large antral (p < 0.001) follicles following flutamide treatment. Moreover, radioimmunological analysis revealed that changes observed in AQP5 expression corresponded with diminished follicular androgens production after both maternal (p < 0.05 and p < 0.05, respectively) and neonatal (p < 0.05 and p < 0.01, respectively) flutamide administration. Therefore, AQP5 appears to be a potential regulator of follicular fluid accumulation, under androgen control, and may be a key factor in antral follicle growth.
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Affiliation(s)
- M Grzesiak
- Department of Endocrinology, Institute of Zoology, Jagiellonian University in Krakow, Krakow, Poland.,Department of Animal Physiology and Endocrinology, University of Agriculture in Krakow, Krakow, Poland
| | - K Knapczyk-Stwora
- Department of Endocrinology, Institute of Zoology, Jagiellonian University in Krakow, Krakow, Poland
| | - M R Luck
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
| | - A Mobasheri
- Department of Veterinary Preclinical Sciences, School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Surrey, UK
| | - M Slomczynska
- Department of Endocrinology, Institute of Zoology, Jagiellonian University in Krakow, Krakow, Poland
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Nogueira D, Cavalieri J, Gummow B, Parker A. Comparison of follicular dynamics and hormone profiles in Boer goats examined during the breeding and non-breeding seasons in the tropics of Queensland, Australia. Small Rumin Res 2015. [DOI: 10.1016/j.smallrumres.2015.02.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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LH secretion around induced ovulation during early and late diestrus and its effect on the appearance of short estrous cycles in cyclic dairy heifers. Theriogenology 2015; 83:497-503. [DOI: 10.1016/j.theriogenology.2014.10.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 10/07/2014] [Accepted: 10/08/2014] [Indexed: 11/18/2022]
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47
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Santos RR, Schoevers EJ, Roelen BAJ. Usefulness of bovine and porcine IVM/IVF models for reproductive toxicology. Reprod Biol Endocrinol 2014; 12:117. [PMID: 25427762 PMCID: PMC4258035 DOI: 10.1186/1477-7827-12-117] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 11/05/2014] [Indexed: 11/10/2022] Open
Abstract
Women presenting fertility problems are often helped by Assisted Reproductive Techniques (ART), such as in vitro fertilization (IVF) programs. However, in many cases the etiology of the in/subfertility remains unknown even after treatment. Although several aspects should be considered when assisting a woman with problems to conceive, a survey on the patients' exposure to contaminants would help to understand the cause of the fertility problem, as well as to follow the patient properly during IVF. Daily exposure to toxic compounds, mainly environmental and dietary ones, may result in reproductive impairment. For instance, because affects oocyte developmental competence. Many of these compounds, natural or synthetic, are endocrine disruptors or endocrine active substances that may impair reproduction. To understand the risks and the mechanism of action of such chemicals in human cells, the use of proper in vitro models is essential. The present review proposes the bovine and porcine models to evaluate toxic compounds on oocyte maturation, fertilization and embryo production in vitro. Moreover, we discuss here the species-specific differences when mice, bovine and porcine are used as models for human.
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Affiliation(s)
- Regiane R Santos
- />Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University,TD Utrecht,, P.O Box 80152, 3508 The Netherlands
- />Laboratory of Wild Animal Biology and Medicine, Federal University of Pará,, Rua Augusto Corrêa,Belém, CEP 66075-110 Pará Brazil
| | - Eric J Schoevers
- />Department of Farm Animal Health, Utrecht University,, Yalelaan, 104, 3584 CM Utrecht, The Netherlands
| | - Bernard AJ Roelen
- />Department of Farm Animal Health, Utrecht University,, Yalelaan, 104, 3584 CM Utrecht, The Netherlands
- />Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan, 104, 3584 CM Utrecht, The Netherlands
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Cordeiro M, Teixeira P, Oliveira M, Filippo PD, Dias D, Beretta C, Dória R, Feliciano M, Coutinho L, Vicente W. Reproductive efficiency of adult and prepubertal goats subjected to repeated follicular aspiration. ARQ BRAS MED VET ZOO 2014. [DOI: 10.1590/s0102-09352014000100020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The objective of this study was to assess the reproductive response of adult and prepubertal goats subjected to repeated laparoscopic ovum pick-up (LOPU). The study animals were divided into two groups, specifically, adult nanny goats (GA, n=10) and prepubertal nanny goats (GP, n=10), which were subjected to estrous synchronization and ovarian stimulation for LOPU. Both groups underwent six LOPU procedures at seven-day intervals and were subsequently subjected to controlled mating and pregnancy diagnosis to evaluate their future fertility. The study showed a reduction in the number of follicles visualized and in the amount and quality of the oocytes that were recovered and exposed to in vitro maturation. As indicated by the fertility test, however, no complications were found during the laparoscopic procedures that would impair the reproductive future of the animals. Therefore, a viable number of oocytes were obtained even with the decreased reproductive efficiency, proving that repeated LOPUs do not interfere with the reproductive of adult and prepubertal nanny goats. These results indicate a positive aspect of this procedure, allowing for increasing reproductive performance of this kind, when used for the production in vitro.
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Christensen A, Haresign W, Khalid M. Progesterone exposure of seasonally anoestrous ewes alters the expression of angiogenic growth factors in preovulatory follicles. Theriogenology 2014; 81:358-67. [DOI: 10.1016/j.theriogenology.2013.10.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/01/2013] [Accepted: 10/04/2013] [Indexed: 11/28/2022]
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50
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Anti-Müllerian hormone concentration in sheep and its dependence of age and independence of BMP15 genotype: An endocrine predictor to select the best donors for embryo biotechnologies. Theriogenology 2014; 81:347-57. [DOI: 10.1016/j.theriogenology.2013.09.033] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 09/16/2013] [Accepted: 09/30/2013] [Indexed: 01/01/2023]
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