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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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Saleem M, Yousuf MR, Ghafoor A, Riaz A. Effect of three schemes of ovum pick-up on the follicular dynamics, gene expression, and in-vitro developmental competence of oocytes in Sahiwal cattle. Reprod Domest Anim 2022; 57:1230-1243. [PMID: 35771838 DOI: 10.1111/rda.14198] [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: 05/13/2022] [Revised: 06/16/2022] [Accepted: 06/28/2022] [Indexed: 12/31/2022]
Abstract
This study aimed to compare the effect of three schemes of ovum pick-up (OPU) on follicular dynamics, oocytes recovery, oocytes quality, gene expression, nuclear maturation and in-vitro developmental competence of oocytes in Sahiwal cattle. Considering the follicle population, all the cows were divided equally in a 3 × 3 cross over design, and each cow received one of the three treatments: (a) twice weekly (TW; n = 6), (b) once weekly (OW; n = 6) and (c) bi-weekly OPU (BW; n = 6) in three periods, with the first OPU conducted on 4, 7 and 14 days after second dominant follicle puncture (DFP) in the TW, OW and BW OPU interval groups, respectively. The collected cumulus oocytes complexes (COCs) were graded into A, B, C and D grades depending on the number of layers of cumulus cells and homogeneous nature of cytoplasm. Nuclear maturation was assessed by staining the oocytes with Hoechst 33342. The growth rate (mm/day) of dominant follicle (DF) (F1) (0.49 ± 0.21 vs. 0.71 ± 0.26 vs. 1.30 ± 0.27) and first subordinate follicle (F2) (0.85 ± 0.27 vs. 0.71 ± 0.25 vs. 1.06 ± 0.29) did not differ (p > .05) among all the three groups. The proportion of animals bearing a corpus luteum (CL) in the BW OPU interval group (53.3%) was significantly higher (p < .05) as compared to TW (13.3%) and OW (18.3%) OPU interval groups. The number of medium-sized follicles and oocyte with grade A and B were significantly higher (p < .05) in the TW (1.16 ± 0.21 and 33.88 ± 0.03) OPU interval group as compared to the OW (0.88 ± 0.22 and 21.54 ± 0.03) and BW (0.55 ± 0.21 and 21.89 ± 0.02) OPU interval groups. However, the number of degenerated oocytes in BW (0.85 ± 0.16) OPU interval group was significantly higher (p < .05) as compared to the TW (0.16 ± 0.15) and OW (0.44 ± 0.16) OPU interval groups. Expression level of growth differentiation factor 9 in TW OPU interval group was significantly higher (p < .05) as compared to the OW and BW OPU interval groups. Likewise, expression level of bone morphogenetic protein 15 (BMP15) in the TW and BW OPU interval groups was significantly higher (p < .05) as compared to the OW OPU interval group. The nuclear maturation rate was significantly higher in the TW (63.64 ± 0.07) and BW (59.26 ± 0.08) OPU groups as compared to OW (51.43 ± 0.06) OPU interval group. However, the cleavage rate (59.30 ± 0.06 vs. 44.29 ± 0.06 vs. 56.67 ± 0.06) did not differ (p > .05) among the three groups. Whereas, the blastocyst rate tended to be higher (p = .06) in the TW (29.07 ± 0.05) and BW (28.33 ± 0.04) OPU interval groups as compared to OW (18.57 ± 0.05) OPU interval group. Taken together, it can be concluded that TW OPU interval scheme enhances the medium-sized follicles resulting in good quality oocytes, regulates the oocyte-derived paracrine factors, leading to higher nuclear maturation rates and improved embryonic development in-vitro.
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Affiliation(s)
- Muhammad Saleem
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Muhammad Rizwan Yousuf
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Aamir Ghafoor
- Department of Microbiology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Amjad Riaz
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Balboula AZ, Aboelenain M, Sakatani M, Yamanaka KI, Bai H, Shirozu T, Kawahara M, Hegab AEO, Zaabel SM, Takahashi M. Effect of E-64 Supplementation during In Vitro Maturation on the Developmental Competence of Bovine OPU-Derived Oocytes. Genes (Basel) 2022; 13:genes13020324. [PMID: 35205369 PMCID: PMC8872247 DOI: 10.3390/genes13020324] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/05/2022] [Accepted: 02/08/2022] [Indexed: 02/05/2023] Open
Abstract
Recovery of bovine oocytes using the ovum pick-up (OPU) technique offers the advantage of rapid genetic improvement through propagation of desired genes from animals with high genetic qualities. However, the developmental competence of OPU-derived immature oocytes remains relatively poor. We previously found that cathepsin B gene expression and activity are increased in poor quality oocytes and embryos compared to good quality ones. In this study, we investigated the effect of E-64 (cathepsin B inhibitor) supplementation during in vitro maturation (IVM) on the developmental competence of OPU-derived immature oocytes and the quality of the produced blastocysts. Our results showed that supplementation of IVM medium with E-64 significantly improved the developmental competence of OPU-derived immature oocytes as evidenced by the significant increase of the blastocyst rate. Importantly, the presence of E-64 during IVM also significantly improved blastocyst quality by increasing the total cell number and decreasing the percentage of TUNEL positive cells. These results indicate that E-64 supplementation during IVM is a promising tool to improve the efficiency of OPU-IVF program by improving the developmental competence of OPU-derived immature oocytes.
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Affiliation(s)
- Ahmed Z. Balboula
- Animal Sciences Research Center, University of Missouri, Columbia, MO 65211, USA;
- National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto 861-1192, Japan; (M.S.); (K.-I.Y.)
- Theriogenology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt; (M.A.); (A.E.O.H.); (S.M.Z.)
| | - Mansour Aboelenain
- Theriogenology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt; (M.A.); (A.E.O.H.); (S.M.Z.)
- Genetics Department, Rutgers University, 145 Bevier Rd., Piscataway, NJ 08854, USA
| | - Miki Sakatani
- National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto 861-1192, Japan; (M.S.); (K.-I.Y.)
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Tochigi 329-2793, Japan
| | - Ken-Ichi Yamanaka
- National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto 861-1192, Japan; (M.S.); (K.-I.Y.)
- Faculty of Agriculture, Saga University, Honjo-machi, Saga 840-8502, Japan
| | - Hanako Bai
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (H.B.); (T.S.); (M.K.)
| | - Takahiro Shirozu
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (H.B.); (T.S.); (M.K.)
| | - Manabu Kawahara
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (H.B.); (T.S.); (M.K.)
| | - Abd Elraouf O. Hegab
- Theriogenology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt; (M.A.); (A.E.O.H.); (S.M.Z.)
- Department of Biology, Faculty of Science, Taif University, Taif 26571, Saudi Arabia
| | - Samy M. Zaabel
- Theriogenology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt; (M.A.); (A.E.O.H.); (S.M.Z.)
| | - Masashi Takahashi
- National Agricultural Research Center for Kyushu Okinawa Region, National Agriculture and Food Research Organization, Koshi, Kumamoto 861-1192, Japan; (M.S.); (K.-I.Y.)
- Laboratory of Animal Genetics and Reproduction, Department of Animal Science, Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (H.B.); (T.S.); (M.K.)
- Research Faculty of Agriculture/Global Center for Food, Land and Water Resources, Hokkaido University, Sapporo 060-8589, Japan
- Correspondence:
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Furukawa E, Chen Z, Ueshiba H, Wu Y, Chiba H, Yanagawa Y, Katagiri S, Nagano M, Hui SP. Postpartum cows showed high oocyte triacylglycerols concurrently with high plasma free fatty acids. Theriogenology 2021; 176:174-182. [PMID: 34624811 DOI: 10.1016/j.theriogenology.2021.09.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 09/12/2021] [Accepted: 09/30/2021] [Indexed: 12/11/2022]
Abstract
Impaired oocyte quality is one of the main causes of low fertility in modern high-yielding dairy cows. One of the potential factors of the impaired oocyte quality is the effects of free fatty acids (FFA). In fact, high FFA supplementation to culture media exacerbated oocyte developmental competence in vitro. Meanwhile, artificially induced high blood FFA levels in heifers did not affect the lipid composition of oocytes in vivo; however, the oocyte lipid profile of postpartum cows has not yet been investigated. Therefore, the profile of lipids involved in energy metabolism, including FFA and triacylglycerols (TAG), and their relationship between plasma and oocytes were compared among cows at different lactation stages. Heifers were used as a control group that was not affected by lactation. Plasma and oocytes were collected from heifers (n = 4) and 14 Holstein cows categorized to the early lactation stage: 25-47 days in milk (DIM) (n = 6), peak lactation stage: 61-65 DIM (n = 4), and middle lactation stage: 160-202 DIM (n = 4). The FFA and TAG profiles of plasma and oocytes were examined by liquid chromatography mass spectrometry. Plasma FFA positively correlated with oocyte TAG (P < 0.05). Plasma FFA and oocyte TAG were significantly higher in cows in the early lactation stage than in heifers (P < 0.05), while the peak and middle lactation stage groups had intermediate levels. The proportion of oleic acid in plasma increased concurrently with elevations in total FFA, while the compositions of oocyte FFA and TAG fatty acyls were constant regardless of plasma FFA concentration or oocyte TAG content. The present results suggest that high postpartum plasma FFA concentrations affect the quantity of oocyte TAG. Taken together with the adverse effects of high FFA concentrations on oocyte developmental competence in vitro, oocyte quality in postpartum cows may be impaired due to high circulating FFA concentrations. These results provide a more detailed understanding of the effects of postpartum high circulating FFA concentrations on the low fertility of cows.
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Affiliation(s)
- Eri Furukawa
- Laboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, Kita-18, Nishi-9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan
| | - Zhen Chen
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-ku, Sapporo, Hokkaido, 060-0812, Japan
| | - Hiroki Ueshiba
- Laboratory of Theriogenology, Faculty of Veterinary Medicine, Hokkaido University, Kita-18, Nishi-9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan
| | - Yue Wu
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-ku, Sapporo, Hokkaido, 060-0812, Japan
| | - Hitoshi Chiba
- Department of Nutrition, Sapporo University of Health Sciences, Nakanuma Nishi-4-2-1-15, Higashi-ku, Sapporo, Hokkaido, 007-0894, Japan
| | - Yojiro Yanagawa
- Laboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, Kita-18, Nishi-9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan
| | - Seiji Katagiri
- Laboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, Kita-18, Nishi-9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan
| | - Masashi Nagano
- Laboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, Kita-18, Nishi-9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan; Laboratory of Animal Reproduction, Department of Animal Science, School of Veterinary Medicine, Kitasato University, 35-1, Higashi-23, Towada, Aomori, 034-8628, Japan.
| | - Shu-Ping Hui
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Kita-ku, Sapporo, Hokkaido, 060-0812, Japan.
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Synchronization of stage of follicle development before OPU improves embryo production in cows with large antral follicle counts. Anim Reprod Sci 2020; 221:106601. [PMID: 32961391 DOI: 10.1016/j.anireprosci.2020.106601] [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: 06/12/2020] [Revised: 09/09/2020] [Accepted: 09/10/2020] [Indexed: 11/21/2022]
Abstract
In the present study, there was an evaluation of in vitro embryo production (IVEP) in Bos indicus donor cows with small or large antral follicle counts (AFCs) when there was synchronization of follicular dynamics among cows before ovum pick-up (OPU). Donor cows classified as having small or large AFC were submitted to OPU/IVEP program (Experiment-I) or had follicular-stage synchronization imposed before OPU/IVEP (Experiment-II). In Experiment-I, the cows with a large AFC had a greater (P < 0.01) mean of embryos developing to the blastocyst stage compared to those with a small AFC. In Experiment-II, percentage of viable oocytes/OPU were not affected (P = 0.33) by synchronization of follicular dynamics, but the AFC had an effect (P < 0.0001). There was an interaction (P = 0.01) indicating the larger AFC, with or without imposing of a synchronization treatment regimen, resulted in the most desirable outcome. The number of embryos was affected (P < 0.001) by follicular-stage synchronization and AFC, with there being an interaction (P = 0.002) with the most desirable results for the large AFC-synchronized group. Number of pregnancies was greater (P ≤ 0.02) for recipient females with embryos from synchronized donors and with a large AFC. There was an interaction (P = 0.03) with there being a greater pregnancy percentage for cows with synchronized follicular stages and the large AFC. Bos indicus donor with a large AFC when associated with the synchronization of stage of follicular dynamics pre-OPU results in improvement of the efficacy of IVEP.
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Expression of selected mitochondrial genes during in vitro maturation of bovine oocytes related to their meiotic competence. Theriogenology 2019; 133:104-112. [PMID: 31078068 DOI: 10.1016/j.theriogenology.2019.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 04/30/2019] [Accepted: 05/01/2019] [Indexed: 11/24/2022]
Abstract
The main goal of this study was to characterize the expression patterns of genes which play a role in mitochondrial DNA biogenesis and metabolism during the maturation of bovine oocytes with different meiotic competence and health. Meiotically more and less competent oocytes were obtained separately either from medium (MF) or small (SF) follicles and categorized according to oocyte morphology into healthy and light-atretic. The four oocyte categories were matured and collected after 0, 3, 7, 16 and 24 h of maturation. Either total RNA or poly(A) RNA were extracted from oocytes and the expression of selected mitochondrial translational factors (TFAM, TFB1M, and TFB2M), MATER, and Luciferase as external standard was assessed using a real-time RT-PCR. The level of TFAM, TFB1M and MATER poly(A) RNA transcripts significantly decreased during maturation in both healthy and light-atretic MF and SF oocytes. On the other hand, the level of TFB2M poly(A) increased during maturation in healthy and light-atretic SF oocytes, in contrast to MF oocytes. The abundance of TFAM total RNA was significantly higher after maturation than that before maturation in all oocyte categories. However, no differences in TFB1M and TFB2M total RNA were found in any oocyte categories. It can be concluded that the gene expression patterns differ in maturing bovine oocytes in dependence on their meiotic competence and health. The TFAM and TFB1M poly(A) RNAs are actively deadenylated at different meiotic stages but TFB2M poly(A) RNA remains elevated in light-atretic less competent oocytes until the completion of meiosis.
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Feres LF, Siqueira LGB, Palhao MP, Dos Santos LL, Brandao FZ, Viana JHM. Likelihood of pregnancy after the transfer of embryos derived from follicle aspiration and in vitro embryo production sessions with different relative efficiencies. Anim Reprod Sci 2018; 193:165-170. [PMID: 29678568 DOI: 10.1016/j.anireprosci.2018.04.065] [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: 02/09/2018] [Revised: 04/06/2018] [Accepted: 04/11/2018] [Indexed: 11/17/2022]
Abstract
The aim of the present study was to evaluate the likelihood of pregnancy of in vitro-produced (IVP) embryos from batches with distinct relative efficiencies. Data were retrospectively analyzed from 605 transvaginal ultrasonic-guided follicle aspiration sessions (OPU) followed by in vitro embryo production (IVEP) and 2456 fresh embryo transfers (ET), performed between 2008 and 2012 in individuals of the Gir (dairy Bos indicus) breed. The OPU and IVEP were performed using standard procedures by a single group of technicians at the same laboratory facility. Records were stratified into quartiles (I to IV) according to the total of cumulus-oocytes complexes (COC) produced per donor, or in percentile ranges (0%-25%, 26%-50%, 51%-75%, and 76%-100%) for endpoints related to COC quality or efficiency of embryo production. Pregnancy per embryo transfer (P/ET) was compared among quartiles or ranges using the chi-squared test. Donors producing a greater number of total COC (quartile I) also had more viable and grade I COC, and a greater number of embryos than donors ranked in quartiles II, III or IV, respectively (P < 0.0001). Nevertheless, P/ET did not differ (P > 0.05) among embryos produced by donors ranked in Quartiles I to IV. Similarly, there was no difference (P > 0.05) in P/ET for embryos derived from OPU sessions with a relatively greater or lesser percentage of viable or Grade I COC. Cleavage and blastocyst rates within each IVEP batch had no effect (P > 0.05) on P/ET. In conclusion, data suggest that there is no relationship among oocyte yield after OPU, or efficiency of IVEP, and the likelihood of pregnancy after ET of fresh IVP embryos.
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Affiliation(s)
- Luiz Fernando Feres
- Universidade Federal Fluminense, Niteroi, RJ, 24230-340, Brazil; Universidade Jose do Rosario Vellano, Alfenas, MG, 37130-000, Brazil
| | | | | | | | | | - Joao Henrique Moreira Viana
- Universidade Jose do Rosario Vellano, Alfenas, MG, 37130-000, Brazil; Embrapa Cenargen, PqEB, Av. W5 N, Brasilia, DF, 70770-917 Brazil.
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Quezada-Casasola A, Martínez-Armendáriz KE, Itzá-Ortiz MF, Escárcega-Ávila AM, Pérez-Eguía E, Filipiak Y, Larocca C, Carrera-Chávez JM. Effect of presence of corpora lutea on cumulus expansion of in vitro matured bovine oocytes selected by trypan blue and brilliant cresyl blue tests. JOURNAL OF APPLIED ANIMAL RESEARCH 2018. [DOI: 10.1080/09712119.2018.1440566] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Andrés Quezada-Casasola
- Departamento de Ciencias Veterinarias, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Chihuahua, México
| | | | - Mateo Fabián Itzá-Ortiz
- Departamento de Ciencias Veterinarias, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Chihuahua, México
| | - Angélica María Escárcega-Ávila
- Departamento de Ciencias Veterinarias, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Chihuahua, México
| | - Eduardo Pérez-Eguía
- Departamento de Ciencias Veterinarias, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Chihuahua, México
| | - Yael Filipiak
- Departamento de Reproducción Animal, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
| | - Clara Larocca
- Departamento de Reproducción Animal, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
| | - José María Carrera-Chávez
- Departamento de Ciencias Veterinarias, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Chihuahua, México
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Hidaka T, Fukumoto Y, Yamamoto Y, Ogata Y, Horiuchi T. Estradiol benzoate treatment before ovum pick-up increases the number of good quality oocytes retrieved and improves the production of transferable embryos in Japanese Black cattle. Vet Anim Sci 2018; 5:1-6. [PMID: 32734038 PMCID: PMC7386652 DOI: 10.1016/j.vas.2018.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 01/19/2018] [Accepted: 02/05/2018] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to evaluate the efficacy of treatment with estradiol benzoate (EB) at luteal phase prior to the ovum pick-up (OPU) during in vitro production of transferable embryos in Japanese Black cattle. A total of 15 cows were used as oocyte donors for OPU. Of those, four donors were randomly allocated (three times) into each of two treatment groups as a crossover study, and OPU session was carried out six times per one donor. Another eleven donors were used in a paired difference test by one crossover trial. Donors in the control group received no hormonal treatment; whereas, donors in the EB group received 1 mg of EB as a single injection. First, we observed dynamics of ovarian follicles and emergence of follicular wave after EB injection using transrectal ultrasonography. The number and proportion of medium-sized follicles with 4 to 6 mm in diameter increased gradually and achieved a peak at 72 and 96 hours after EB injection. The OPU was performed 88 hours after EB injection. The EB-treated donors had a higher proportion of follicles with 4 to 6 mm in diameters at the time of OPU. The stimulation with EB significantly increased the numbers of follicles aspirated, and the good quality cumulus-oocyte complexes per OPU. Furthermore, in the EB group, the percentage of transferable blastocysts was significantly greater than that in the control group (P<0.05). In conclusion, a single EB injection before OPU increases the number of medium-sized follicles and can produce more transferable embryos. Efficacy of one-shot treatment with 1 mg of estradiol benzoate (EB) at luteal phase prior to the ovum pick-up (OPU) for in vitro production of transferable embryos in Japanese Black cattle was investigated. The donors had a higher proportion of follicles with 4 to 6 mm in diameter at 72 and 96 hours after EB i.m. injection. The stimulation with EB before OPU increased significantly the number of good quality cumulus-oocyte complexes, and the percentage of blastocysts or transferable embryos after in vitro fertilization.
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Affiliation(s)
- Takemasa Hidaka
- Hiroshima Prefectural Technology Research Institute Livestock Technology Research Center, Shobara, Hiroshima 727-0023, Japan
- Department of Life Sciences, Prefectural University of Hiroshima, Shobara, Hiroshima 727-0023, Japan
| | - Yutaka Fukumoto
- Hiroshima Prefectural Technology Research Institute Livestock Technology Research Center, Shobara, Hiroshima 727-0023, Japan
| | - Yuusuke Yamamoto
- Hiroshima Prefectural Technology Research Institute Livestock Technology Research Center, Shobara, Hiroshima 727-0023, Japan
| | - Yasuhiro Ogata
- Hiroshima Prefectural Technology Research Institute Livestock Technology Research Center, Shobara, Hiroshima 727-0023, Japan
| | - Toshitaka Horiuchi
- Department of Life Sciences, Prefectural University of Hiroshima, Shobara, Hiroshima 727-0023, Japan
- Corresponding author. Tel./fax: +81 824 74 1750.
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Use of FSH in two different regimens for ovarian superstimulation prior to ovum pick up and in vitro embryo production in Holstein cows. Theriogenology 2017; 90:65-73. [DOI: 10.1016/j.theriogenology.2016.11.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 11/16/2016] [Accepted: 11/17/2016] [Indexed: 11/21/2022]
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Oliveira LH, Sanches CP, Seddon AS, Veras MB, Lima FA, Monteiro PLJ, Wiltbank MC, Sartori R. Short communication: Follicle superstimulation before ovum pick-up for in vitro embryo production in Holstein cows. J Dairy Sci 2016; 99:9307-9312. [PMID: 27568054 DOI: 10.3168/jds.2016-11306] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 06/07/2016] [Indexed: 02/05/2023]
Abstract
The objective was to evaluate in vitro embryo production (IVEP) in nonlactating Holstein cows after ovarian superstimulation. Cows were randomly assigned in a crossover design to 1 of 2 groups: control (n=35), which was not synchronized and not treated with hormones before ovum pick-up (OPU), or hormone-treated (n=35), in which wave emergence was synchronized and animals treated with porcine (p)-FSH in the presence of norgestomet before OPU. In the hormone-treated group, all follicles ≥7mm in diameter were aspirated for synchronization of wave emergence and cows received a norgestomet ear implant. After 36h, treatment with p-FSH (6 doses of 40mg each, 12h apart, i.m.) started. Ovum pick-up from follicles >2mm in diameter was performed 44h after the last p-FSH (coasting). Then, IVEP was performed. The total number of cumulus-oocyte complexes recovered (16.0 vs. 20.5±2.2) and number of grades I to III (viable) oocytes (10.7 vs. 12.3±1.6) did not differ between hormone-treated and control groups Additionally, no differences were found in the number of blastocysts per cow per OPU (3.0 vs. 2.6±0.5) or in blastocyst rates (17.1 vs. 12.2±2.4%) between hormone-treated and control, respectively. Thus, in this study, ovarian follicle superstimulation with p-FSH followed by coasting in nonlactating Holstein cows that had synchronization of wave emergence and progestin supplementation did not improve oocyte quality or IVEP compared to no hormonal treatment.
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Affiliation(s)
- Louise H Oliveira
- Department of Animal Science, University of São Paulo, Piracicaba, SP 13418-900 Brazil
| | - Carlos P Sanches
- Department of Animal Production, São Paulo State University, Botucatu, SP 18168-000 Brazil
| | | | | | | | - Pedro L J Monteiro
- Department of Animal Science, University of São Paulo, Piracicaba, SP 13418-900 Brazil
| | - Milo C Wiltbank
- Department of Dairy Science, University of Wisconsin-Madison, Madison 53706
| | - Roberto Sartori
- Department of Animal Science, University of São Paulo, Piracicaba, SP 13418-900 Brazil.
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Hajarian H, Shahsavari MH, Karami-shabankareh H, Dashtizad M. The presence of corpus luteum may have a negative impact on in vitro developmental competency of bovine oocytes. Reprod Biol 2016; 16:47-52. [DOI: 10.1016/j.repbio.2015.12.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Revised: 12/17/2015] [Accepted: 12/30/2015] [Indexed: 11/29/2022]
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13
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Vieira L, Rodrigues C, Castro Netto A, Guerreiro B, Silveira C, Freitas B, Bragança L, Marques K, Sá Filho M, Bó G, Mapletoft R, Baruselli P. Efficacy of a single intramuscular injection of porcine FSH in hyaluronan prior to ovum pick-up in Holstein cattle. Theriogenology 2016; 85:877-886. [DOI: 10.1016/j.theriogenology.2015.10.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 10/14/2015] [Accepted: 10/28/2015] [Indexed: 11/26/2022]
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14
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Affiliation(s)
- Patrick Lonergan
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland;
| | - Trudee Fair
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland;
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15
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Velazquez MA, Kues WA, Niemann H. Biomedical applications of ovarian transvaginal ultrasonography in cattle. Anim Biotechnol 2014; 25:266-93. [PMID: 24813220 DOI: 10.1080/10495398.2013.870075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Ovarian transvaginal ultrasonography (OTU) has been used world-wide for commercial ovum pick-up programs for in vitro embryo production in elite herds, providing an excellent model for the elucidation of factors controlling bovine oocyte developmental competence. Noninvasive sampling and treatment of ovarian structures is easily accomplished with bovine OTU techniques providing a promising system for in vivo delivery of transgenes directly into the ovary. The current review summarizes existing bovine OTU models and provides prospective applications of bovine OTU to undertake research in reproductive topics of biomedical relevance, with special emphasis on the development of in vivo gene transfer strategies.
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Affiliation(s)
- Miguel A Velazquez
- a Centre for Biological Sciences , University of Southampton, Southampton General Hospital , Southampton , United Kingdom
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16
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Gimenes LU, Ferraz ML, Fantinato-Neto P, Chiaratti MR, Mesquita LG, Sá Filho MF, Meirelles FV, Trinca LA, Rennó FP, Watanabe YF, Baruselli PS. The interval between the emergence of pharmacologically synchronized ovarian follicular waves and ovum pickup does not significantly affect in vitro embryo production in Bos indicus, Bos taurus, and Bubalus bubalis. Theriogenology 2014; 83:385-93. [PMID: 25447149 DOI: 10.1016/j.theriogenology.2014.09.030] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 09/27/2014] [Accepted: 09/29/2014] [Indexed: 10/24/2022]
Abstract
The aim of the present study was to determine the optimal phase of the follicular wave to perform ovum pickup (OPU) for in vitro embryo production (IVEP) in various genetic groups. For this purpose, 27 heifers-nine Bos taurus (Holstein), nine Bos indicus (Nelore), and nine Bubalus bubalis (Mediterranean)-were maintained under the same nutritional, management, and environmental conditions. Heifers within each genetic group were submitted to six consecutive OPU trials with 14-day intersession intervals, at three different phases of the pharmacologically synchronized follicular wave (Day 1, 3, or 5 after follicular wave emergence), in a 3 × 3 crossover design. When OPU was performed at different phases of the pharmacologically synchronized follicular wave (Day 1, 3, or 5), no differences were found in the percent of oocytes recovered (70.5 ± 3.1%, 75.0 ± 3.1%, 76.0 ± 3.2%, respectively; P = 0.41) or blastocyst production rates (19.4 ± 2.9%, 16.6 ± 2.9%, 15.9 ± 2.6%, respectively; P = 0.36). Comparing genetic groups, B indicus showed a higher blastocyst rate (28.3(a) ± 2.8%; P < 0.01) than B taurus and B bubalis (14.1(b) ± 2.9% and 10.2(b) ± 2.0%, respectively). However, only B indicus heifers showed a variation in the number of visualized follicles and the total and viable oocytes along consecutive OPU sessions. In conclusion, different phases of the pharmacologically synchronized ovarian follicular wave did not affect OPU-IVEP in B indicus, B taurus, and B bubalis heifers. Additionally, B indicus heifers showed greater OPU-IVEP efficiency than did the other genetic groups, under the same management conditions.
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Affiliation(s)
- Lindsay U Gimenes
- Department of Preventive Veterinary Medicine and Animal Reproduction, FCAV-UNESP, Jaboticabal, Brazil.
| | | | | | | | - Lígia G Mesquita
- Department of Animal Nutrition and Production, FMVZ-USP, Pirassununga, Brazil
| | | | | | | | - Francisco P Rennó
- Department of Animal Nutrition and Production, FMVZ-USP, Pirassununga, Brazil
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17
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Penitente-Filho JM, Jimenez CR, Zolini AM, Carrascal E, Azevedo JL, Silveira CO, Oliveira FA, Torres CAA. Influence of corpus luteum and ovarian volume on the number and quality of bovine oocytes. Anim Sci J 2014; 86:148-52. [PMID: 25187422 DOI: 10.1111/asj.12261] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/27/2014] [Indexed: 11/28/2022]
Abstract
In order to evaluate whether ovarian volume, presence and diameter of the corpus luteum (CL) have effects on the number and quality of bovine recovered oocytes, 110 ovaries were obtained from the slaughterhouse. Cumulus oocytes complex were aspirated and evaluated under stereomicroscope. Oocytes were counted and classified according to their quality (Grades I, II, III and IV). Ovarian volume was weakly correlated to the number of good quality oocytes (P < 0.05). Ovaries with CL showed greater numbers of good quality oocytes than ovaries without CL (P < 0.05). Further, presence of CL and its diameter positively influenced the probability of recovering good quality oocytes (P < 0.05). In conclusion, ovarian volume is not a good parameter itself to predict important ovarian characteristics; moreover, analysis of CL, its presence and diameter, may be a good tool to improve efficiency on in vitro embryo production programs.
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Vieira L, Rodrigues C, Castro Netto A, Guerreiro B, Silveira C, Moreira R, Sá Filho M, Bó G, Mapletoft R, Baruselli P. Superstimulation prior to the ovum pick-up to improve in vitro embryo production in lactating and non-lactating Holstein cows. Theriogenology 2014; 82:318-24. [DOI: 10.1016/j.theriogenology.2014.04.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 04/11/2014] [Accepted: 04/11/2014] [Indexed: 11/15/2022]
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19
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Viana J, Dorea M, Siqueira L, Arashiro E, Camargo L, Fernandes C, Palhão M. Occurrence and characteristics of residual follicles formed after transvaginal ultrasound-guided follicle aspiration in cattle. Theriogenology 2013; 79:267-73. [DOI: 10.1016/j.theriogenology.2012.08.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Revised: 08/16/2012] [Accepted: 08/17/2012] [Indexed: 10/27/2022]
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20
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Baruselli PS, Sá Filho MF, Ferreira RM, Sales JNS, Gimenes LU, Vieira LM, Mendanha MF, Bó GA. Manipulation of Follicle Development to Ensure Optimal Oocyte Quality and Conception Rates in Cattle. Reprod Domest Anim 2012; 47 Suppl 4:134-41. [DOI: 10.1111/j.1439-0531.2012.02067.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Aller J, Mucci N, Kaiser G, Callejas S, Alberio R. Effect of repeated eCG treatments and ovum pick-up on ovarian response and oocyte recovery during early pregnancy in suckling beef cows. Anim Reprod Sci 2012; 133:10-5. [DOI: 10.1016/j.anireprosci.2012.06.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 05/30/2012] [Accepted: 06/02/2012] [Indexed: 10/28/2022]
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22
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Hulinska P, Martecikova S, Jeseta M, Machatkova M. Efficiency of in vitro fertilization is influenced by the meiotic competence of porcine oocytes and time of their maturation. Anim Reprod Sci 2011; 124:112-7. [PMID: 21388757 DOI: 10.1016/j.anireprosci.2011.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 01/05/2011] [Accepted: 02/01/2011] [Indexed: 11/26/2022]
Abstract
The effect of meiotic competence of oocytes and time of their maturation on the efficiency of fertilization was studied in pigs. Cycling gilts with synchronized estrous cycles were used as oocyte donors. To obtain oocytes with different meiotic competence, oocytes were recovered separately from small and medium follicles in the early, middle and late luteal or early follicular phase. They were matured for 40 h, 43 h or 47 h and fertilized by spermatozoa of a proven boar. The penetration and monospermy rates, and total efficiency of fertilization were assessed. The same data were related to the follicle size, with or without regard to the phase, and to the maturation time. Regardless of the phase and the time of maturation, the monospermy rate and total efficiency of fertilization were significantly lower for the small follicle-derived oocytes than for the medium follicle-derived oocytes (38.5±10.4% vs 63.1±7.0% and 24.7±6.3% vs 42.5±3.8%). With regard to the phase, in the small follicle-derived oocytes, the monospermy rate increased significantly (P<0.05) from the early luteal to the late luteal phase (from 25.4±2.4% to 46.4±3.9%) and remained unchanged in the early follicular phase. A similar tendency was observed in the total efficiency of fertilization. No differences were found in either of these parameters in medium follicle-derived oocytes in the late luteal and early follicular phase. With regard to the time of maturation, the total efficiency of fertilization was significantly higher (P<0.05) in the small follicle-derived oocytes matured for 47 h than in those matured for 40 h (27.7±7.4% vs. 20.5±6.1%) and in the medium follicle-derived oocytes matured for 40 h as compared with those matured for 47 h (47.1±1.9% vs. 32.7±1.1%). With regard to the phase and the time of maturation, the differences were significant only in the late luteal and early follicular phases. It can be concluded that greater meiotic competence of porcine oocytes positively influences monospermy rate and total efficiency of fertilization process. However adequate time of maturation is an important factor for oocytes with different meiotic competence to improve the IVF procedure.
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Affiliation(s)
- P Hulinska
- Department of Genetics and Reproduction, Veterinary Research Institute, 621 00 Brno, Czech Republic
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23
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Aller J, Mucci N, Kaiser G, Ríos G, Callejas S, Alberio R. Transvaginal follicular aspiration and embryo development in superstimulated early postpartum beef cows and subsequent fertility after artificial insemination. Anim Reprod Sci 2010; 119:1-8. [DOI: 10.1016/j.anireprosci.2009.11.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2009] [Revised: 11/16/2009] [Accepted: 11/26/2009] [Indexed: 10/20/2022]
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24
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Effect of follicular wave synchronization on in vitro embryo production in heifers. Anim Reprod Sci 2010; 117:201-7. [DOI: 10.1016/j.anireprosci.2009.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Revised: 04/14/2009] [Accepted: 04/27/2009] [Indexed: 11/22/2022]
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25
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Bilby TR, Block J, do Amaral BC, Sa Filho O, Silvestre FT, Hansen PJ, Staples CR, Thatcher WW. Effects of dietary unsaturated fatty acids on oocyte quality and follicular development in lactating dairy cows in summer. J Dairy Sci 2008; 89:3891-903. [PMID: 16960065 DOI: 10.3168/jds.s0022-0302(06)72432-8] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Dietary sources of fatty acids were evaluated for their influence on oocyte quality and follicular development using 54 lactating cows in summer. Fat supplements were 1) sunflower oil (80% cis 18:1), 2) Ca salt of transoctadecenoic acids (57% trans 18:1), 3) Ca salt of vegetable oils (30% 18:2), and 4) linseed oil (56% 18:3 and 16% 18:2). Fats were fed at 1.35% of dietary dry matter beginning at 5 wk prior to expected calving date and at 1.5% (oils) and 1.75% (Ca salts) of dietary dry matter for 15 wk after parturition. Four days following a programmed induced ovulation, 5 transvaginal oocyte aspirations were performed 3 or 4 d apart. Three days after the last aspiration, PGF2alpha was injected, followed 3 d later by a GnRH injection and a timed artificial insemination (d 0) 16 to 20 h later. For the first 4 aspirations, oocytes grading 1 or 2 were used for in vitro embryo production. Total cell number and the proportion of terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL)-positive blastomeres were analyzed at d 8. At the fifth aspiration, the occurrence of metaphase II, group II caspase activity, and TUNEL labeling were determined after oocyte maturation. A total of 1,011 oocytes were collected. The proportion of oocytes with high caspase activity was greater for grade 3 compared with grades 1 and 2 (37.5 vs. 1.54 and 1.61%). Feeding polyunsaturated fatty acids, as compared with monosaturated fatty acids, failed to affect oocyte quality, as demonstrated by subsequent embryo development. Cows fed 18:2- or 18:3-enriched diets had a larger preovulatory follicle at insemination and subsequent volume of the corpus luteum compared with those fed cis 18:1 or trans 18:1 diets (16.8, 16.2 vs. 15.0, 14.9 +/- 0.7 mm; 7,323, 8,208 vs. 6,033, 5,495 +/- 644 mm3, respectively). The previously documented benefits of polyunsaturated fatty acids on reproductive performance appear to reflect actions at alternative biological windows in lactating dairy cows.
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Affiliation(s)
- T R Bilby
- Department of Animal Sciences, University of Florida, Gainesville, Florida 32611-0910, USA
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26
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Abstract
Bovine in vitro embryo production is an inefficient process; while maturation and fertilization proceed apparently normally, the proportion of embryos reaching the transferable (blastocyst) stage is rarely over 40% and those that do reach this stage are often compromised in quality and competence. There is considerable evidence of a significant influence of follicular origin on oocyte developmental potential and it appears that once the oocyte is removed from the follicle its developmental capacity is capped. Evidence suggests that while culture conditions during bovine in vitro embryo production can impact somewhat the developmental potential of the early embryo, the intrinsic quality of the oocyte is the key factor determining the proportion of oocytes developing to the blastocyst stage. This paper highlights some of the problems associated with in vitro production of embryos and discusses some of the ways of overcoming these problems.
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27
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Pfeffer PL, Sisco B, Donnison M, Somers J, Smith C. Isolation of genes associated with developmental competency of bovine oocytes. Theriogenology 2007; 68 Suppl 1:S84-90. [PMID: 17467046 DOI: 10.1016/j.theriogenology.2007.03.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Eggs differ widely in their ability to develop into an embryo. To address this characteristic, the concept of developmental competency has been coined, defined as the ability or potential of an oocyte to undergo maturation, fertilization and development to blastocyst stages or live offspring. Developmental competency is acquired progressively during folliculogenesis and is linked to follicular size. In an effort to understand the molecular changes underlying differences in competency we compared oocytes derived from large follicles (>or=5mm) to those from small follicles (<or=2mm). We used an approach combining suppressive subtraction hybridization with a linear amplification step to identify genes upregulated in the more competent oocytes. Real-time RT-PCR quantification indicated highly significant upregulation for 10 genes. However, the observed changes did not exceed three-fold suggesting that the molecular causes for poor developmental capacity may be reliant on many small changes. In monovulatory species oocyte developmental competency is further modulated in a process termed follicular dominancy, whereby only one of a cohort of developing ovarian follicles continues to grow. In our second approach, we aimed to identify genes that may be involved in the choice of one follicle as becoming dominant and thus restricting the developmental competency to a single oocyte. This approach, focusing on granulosa cells, yielded a small set of five genes that could be verified to be reliable markers for dominant follicles. We have further analyzed one of these involving the activin/inhibin pathway. Lastly, in a third approach we are investigating the feasibility of using nuclear transfer (NT) to interrogate oocyte developmental competency.
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Affiliation(s)
- P L Pfeffer
- AgResearch, Ruakura Research Centre, Private Bag 3123, Hamilton, New Zealand.
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28
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Ghanem N, Hölker M, Rings F, Jennen D, Tholen E, Sirard MA, Torner H, Kanitz W, Schellander K, Tesfaye D. Alterations in transcript abundance of bovine oocytes recovered at growth and dominance phases of the first follicular wave. BMC DEVELOPMENTAL BIOLOGY 2007; 7:90. [PMID: 17662127 PMCID: PMC1976425 DOI: 10.1186/1471-213x-7-90] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2007] [Accepted: 07/27/2007] [Indexed: 11/10/2022]
Abstract
Background Oocyte developmental competence is highly affected by the phase of ovarian follicular wave. Previous studies have shown that oocytes from subordinate follicles recovered at growth phase (day 3 after estrus) are developmentally more competent than those recovered at dominance phase (day 7 after estrus). However, the molecular mechanisms associated with these differences are not well elucidated. Therefore, the objective of this study was to investigate transcript abundance of bovine oocytes retrieved from small follicles at growth and dominance phases of the first follicular wave and to identify candidate genes related to oocyte developmental competence using cDNA microarray. Results Comparative gene expression analysis of oocytes from growth and dominance phases and subsequent data analysis using Significant Analysis of Microarray (SAM) revealed a total of 51 differentially regulated genes, including 36 with known function, 6 with unknown function and 9 novel transcripts. Real-time PCR has validated 10 transcripts revealed by microarray analysis and quantified 5 genes in cumulus cells derived from oocytes of both phases. The expression profile of 8 (80%) transcripts (ANAXA2, FL396, S100A10, RPL24, PP, PTTG1, MSX1 and BMP15) was in agreement with microarray data. Transcript abundance of five candidate genes in relation to oocyte developmental competence was validated using Brilliant Cresyl Blue (BCB) staining as an independent model. Furthermore, localization of mRNA and protein product of the candidate gene MSX1 in sections of ovarian follicles at days 0, 1, 3 and 7 of estrous cycle showed a clear fluorescent signal in both oocytes and cumulus cells with higher intensity in the former. Moreover, the protein product was detected in bovine oocytes and early cleavage embryos after fertilization with higher intensity around the nucleus. Conclusion This study has identified distinct sets of differentially regulated transcripts between bovine oocytes recovered from small follicles at growth and dominance phases of the first follicular wave. The validation with independent model supports our notion that many of the transcripts identified here may represent candidate genes associated with oocyte developmental competence. Further specific functional analysis will provide insights into the exact role of these transcripts in oocyte competence and early embryonic development.
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Affiliation(s)
- Nasser Ghanem
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, 53115 Bonn, Germany
| | - Michael Hölker
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, 53115 Bonn, Germany
| | - Franca Rings
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, 53115 Bonn, Germany
| | - Danyel Jennen
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, 53115 Bonn, Germany
| | - Ernst Tholen
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, 53115 Bonn, Germany
| | - Marc-André Sirard
- Centre de Recherche en Biologie de la Reproduction, Université Laval, Département des Sciences Animales, Pav. Comtois, Laval, Sainte-Foy, Québec, G1K 7P4, Canada
| | - Helmut Torner
- Research Institute for Biology of Farm Animals, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Wilhelm Kanitz
- Research Institute for Biology of Farm Animals, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Karl Schellander
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, 53115 Bonn, Germany
| | - Dawit Tesfaye
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, 53115 Bonn, Germany
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Nagano M, Hishinuma M, Katagiri S, Takahashi Y. The relationship between oocyte morphology and ovarian status in cattle. J Reprod Dev 2007; 53:953-8. [PMID: 17510530 DOI: 10.1262/jrd.19022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We investigated the relationships between oocyte morphology, follicular size and follicular waves using bovine ovaries derived from local abattoirs. Ovaries at the recruitment and selection phases contained larger numbers of oocytes with good developmental ability, although ovaries at the recruitment phase contained the largest numbers of follicles compared with ovaries at the selection and dominant phases. Dominant phase ovaries contained a high percentage of oocytes with as good developmental ability as selection phase ovaries; however, they contained the lowest total number of oocytes with good developmental ability. Small follicles under 3.0 mm in diameter contained large numbers of small and degenerating oocytes. In contrast, follicles more than 3.0 mm in diameter contained a higher percentage of oocytes with good developmental ability.
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Affiliation(s)
- Masashi Nagano
- Laboratory of Theriogenology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan.
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30
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Gonzalez-Bulnes A, Berlinguer F, Cocero MJ, Garcia-Garcia RM, Leoni G, Naitana S, Rosati I, Succu S, Veiga-Lopez A. Induction of the presence of corpus luteum during superovulatory treatments enhances in vivo and in vitro blastocysts output in sheep. Theriogenology 2005; 64:1392-403. [PMID: 16139615 DOI: 10.1016/j.theriogenology.2005.02.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2004] [Revised: 12/21/2004] [Accepted: 02/28/2005] [Indexed: 11/24/2022]
Abstract
This report offers the results of two experiments developed to test possible benefitial effects of the presence of corpus luteum (CL) on in vivo and in vitro sheep embryo production; using two different breeds treated with two different protocols by two different teams at two different centres. In the first trial, estrus was synchronized in 11 ewes with two doses of cloprostenol, 10 days apart. On day 1 after estimated ovulation, sheep were treated with progestagen sponges and superovulated with eight decreasing doses (26.4 units NIH-FSH-S1 x 3, 22.0 units x 2, and 17.6 units x 3) of ovine FSH injected twice daily. Ovulation rate and number of embryos obtained in vivo were compared to those from 12 control ewes without cloprostenol treatment. Presence of a CL improves the number of transferable embryos (7.4+/-0.6 versus 4.1+/-0.6 in control ewes, P < 0.05). The second trial investigated the effects of the presence of CL on embryos produced in vitro from six ewes bearing CL and six ewes without CL at start a superovulatory treatment consisting of 96 units of ovine FSH administered in four equal doses given every 12 h. There were not detected effects of the CL on the number and size of follicles or in the number, morphology and ability to resume meiosis of their oocytes. However, oocytes from ewes with CL showed higher rates of fertilization (73.5 versus 45.5%, P < 0.005), higher development to blastocyst (35.8 versus 19.3%, P < 0.01) and higher hatching rates after vitrification (80.0 versus 25.0%, P < 0.05).
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Affiliation(s)
- A Gonzalez-Bulnes
- Departmento de Reproduccion Animal INIA, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain.
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