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Baruselli PS, de Abreu LÂ, Catussi BLC, Oliveira ACDS, Rebeis LM, Gricio EA, Albertini S, Sales JNS, Rodrigues CA. Use of new recombinant proteins for ovarian stimulation in ruminants. Anim Reprod 2023; 20:e20230092. [PMID: 37720727 PMCID: PMC10503889 DOI: 10.1590/1984-3143-ar2023-0092] [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: 06/06/2023] [Accepted: 07/21/2023] [Indexed: 09/19/2023] Open
Abstract
Currently, gonadotropin products (follicle stimulating hormone, FSH, and luteinizing hormone, LH) used in animal reproduction are produced by extraction and purification from abattoir-derived pituitary glands. This method, relying on animal-derived materials, carries the potential risk of hormone contamination and pathogen transmission. Additionally, chorionic gonadotropins are extracted from the blood of pregnant mares (equine chorionic gonadotropin; eCG) or the urine of pregnant women (human chorionic gonadotropin; hCG). However, recent advancements have introduced recombinant gonadotropins for assisted animal reproduction therapies. The traditional use of FSH for superovulation has limitations, including labor requirements and variability in superovulation response, affecting the success of in vivo (SOV) and in vitro (OPU/IVEP) embryo production. FSH treatment for superstimulation before OPU can promote the growth of a homogenous follicular population and the recovery of competent oocytes suitable for IVEP procedures. At present, a single injection of a preparation of long-acting bovine recombinant FSH (rFSH) produced similar superovulation responses resulting in the production of good-quality in vivo and in vitro embryos. Furthermore, the treatment with eCG at FTAI protocol has demonstrated its efficacy in promoting follicular growth, ovulation, and P/AI, mainly in heifers and anestrous cows. Currently, treatment with recombinant glycoproteins with eCG-like activity (r-eCG) have shown promising results in increasing follicular growth, ovulation, and P/AI in cows submitted to P4/E2 -based protocols. Bovine somatotropin (bST) is a naturally occurring hormone found in cows. Recombinant bovine somatotropin (rbST), produced through genetic engineering techniques, has shown potential in enhancing reproductive outcomes in ruminants. Treatment with rbST has been found to improve P/IA, increase donor embryo production, and enhance P/ET in recipients. The use of recombinant hormones allows to produce non-animal-derived products, offering several advantages in assisted reproductive technologies for ruminants. This advancement opens up new possibilities for improving reproductive efficiency and success rates in the field of animal reproduction.
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Affiliation(s)
- Pietro Sampaio Baruselli
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Laís Ângelo de Abreu
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Bruna Lima Chechin Catussi
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Ana Carolina dos Santos Oliveira
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Lígia Mattos Rebeis
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Emanuele Almeida Gricio
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Sofía Albertini
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
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Sharif B, Hassan M, Arshad U, Tahir MZ, Ahmad E, Khan MI, Shahzad M, Mohsin I, Sosa F, Rehman A. Effect of eCG dose on ovarian haemodynamics, hormonal profiles and prolificacy rate when oestrus was induced during low-breeding season in Beetal goats. Reprod Domest Anim 2023; 58:48-59. [PMID: 36102495 DOI: 10.1111/rda.14257] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/12/2022] [Indexed: 01/07/2023]
Abstract
The objectives of the experiment were to determine the effect of two doses of equine chorionic gonadotropin (eCG) in a standard synchronization protocol based on a short-term progesterone (P4 ) priming on ovarian structures and haemodynamics, concentrations of steroid hormones and prolificacy rate when oestrus was induced during low-breeding season (LBS) in Beetal dairy goats. We hypothesized that inclusion of eCG in a short-term P4 priming-based synchronization protocol would increase the blood perfusion to ovarian structures leading to enhance oestrous and ovulatory responses and prolificacy rate in goats. Forty-two multiparous acyclic goats were blocked by body condition and, within block, assigned randomly to receive saline as control (CON), low eCG (L-eCG; 300 IU) or high eCG (H-eCG; 600 IU) dose. Initially, a controlled internal drug release (CIDR) device was placed in the anterior vagina on d -8, followed by removal of CIDR on d -3, concurrent with the administration of PGF2α and eCG according to their respective treatments. Goats were monitored for oestrous response. B-mode and Doppler ultrasonography was performed with 12-h interval, starting from day -3 until natural breeding (day 0), and then on days 5, 10, 15 and 20 post-breeding to monitor follicular and luteal dynamics and blood flow, respectively. Blood was sampled at 0, 12, 24, 36 and 60 h after CIDR removal to quantify plasma concentrations of estradiol-17β (E2 ), whereas plasma concentrations of P4 were assayed at days 5, 10, 15 and 20 after breeding. Pregnancy and prolificacy rates were determined at day 30 and 150 after breeding, respectively. Data were analysed with mixed-effects models, and orthogonal contrasts were used to evaluate the effect of treatment [Con vs. (½ L-eCG + ½ H-eCG)] and dose of eCG (L-eCG vs. H-eCG). Data are presented in sequence as CON, L-eCG, H-eCG (LSM ± SEM). The oestrous intensity score (152.9 vs. 182.7 vs. 186.5 ± 15.1; p = .02) was greater in eCG-treated goats as compared to CON. Administration of eCG reduced the intervals to standing oestrus (66.2 vs. 41.8 vs. 48.9 h ± 5.5; p = .05), breeding (70.2 vs. 44.4 vs. 45.4 h ± 4.5; p = .03) and ovulation (84.5 vs. 61.2 vs. 63.4 h ± 6.2; p = .05) compared with CON goats. The mean growth rate of pre-ovulatory follicle was greater (1.11 vs. 1.49 vs. 1.45 mm ± 0.08; p = .01) in eCG-treated goats resulting in an increased diameter of pre-ovulatory follicle (6.27 vs. 7.20 vs. 7.31 mm ± 0.07; p < .01) and corpora lutea (6.75 vs. 8.26 vs. 8.07 mm ± 0.42; p = .04) than CON. The mean follicular blood flow did not differ among treatments; however, the mean luteal blood flow was greater in L-eCG-treated goats (0.81 vs. 1.61 vs. 1.07 cm2 ± 0.12; p = .001). The mean concentrations of E2 (4.03 vs. 5.21 vs. 4.78 pg/ml ± 0.42; p = .04) and P4 (4.85 vs. 6.39 vs. 6.22 ng/ml ± 0.34; p = .04) were greater in eCG-treated goats. The twinning rate did not differ between treatments; nevertheless, prolificacy rate was greater (p = .04) in L-eCG-treated goats. Collectively, our data suggest that the administration of eCG improves the induction of oestrous and ovarian dynamics. Administration of L-eCG enhances prolificacy rate, therefore, a low dose of eCG might be practically beneficial to improve reproduction during LBS in acyclic Beetal dairy goats.
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Affiliation(s)
- Babar Sharif
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Mubbashar Hassan
- Department of Clinical Sciences, College of Veterinary and Animal Sciences, Jhang, Pakistan
| | - Usman Arshad
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan.,Department of Animal Sciences, University of Florida, Gainesville, Florida, USA
| | - Muhammad Z Tahir
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Ejaz Ahmad
- Department of Clinical Sciences, Faculty of Veterinary Science, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad I Khan
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Muhammad Shahzad
- Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan
| | - Imran Mohsin
- Department of Livestock Production, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Froylan Sosa
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Abdul Rehman
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Effects of eCG and FSH in timed artificial insemination treatment regimens on estrous expression and pregnancy rates in primiparous and multiparous Bos indicus cows. Anim Reprod Sci 2021; 228:106751. [PMID: 33866258 DOI: 10.1016/j.anireprosci.2021.106751] [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: 07/30/2020] [Revised: 04/10/2021] [Accepted: 04/12/2021] [Indexed: 11/22/2022]
Abstract
Effects were evaluated in Bos indicus cows of eCG and FSH on follicular growth, estrous expression, and pregnancy per artificial insemination (P/AI) as a result of fixed-time artificial insemination (TAI). In Experiment 1, extent of timing-of-ovulation synchronization among cows was evaluated after imposing an estrogen/progesterone-based treatment regimen. At progesterone device removal (D8), cows were administered: eCG, or FSH or served as untreated Controls. In Experiment 2, percentage of cows P/AI was evaluated when the Experiment 1-treatment regimen was imposed. On D10, all cows were artificially inseminated. In Experiment 3, cows were assigned to two treatment groups (Control and eCG) on D8 to evaluate percentage of cows P/AI and estrous expression. In Experiment 1, follicular dynamics were similar among treatment groups. In Experiment 2, follicular growth was greater (P = 0.0001) with the eCG treatment. There was an interaction of treatment × parity (P = 0.007) on percentage of cows P/AI. There was a greater percentage of primiparous cows P/AI in the eCG-treated than Control and FSH-treated cows. There was a greater percentage of eCG-treated multiparous cows pregnant as a result of TAI than Control cows. There was an interaction of treatment × parity (P = 0.005) on P/AI in Experiment 3, in which the eCG effect was more pronounced in primiparous cows. Treatment with FSH, therefore, was not as effective as eCG in stimulation of follicular growth or enhancing percentage of cows pregnant as a result of TAI. Physiological effects of eCG, however, were also more evident in primiparous cows.
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Pinto HF, Missio D, Dos Santos Brum D, Carloto GW, Martini AP, Pessoa GA, Neto NA, Claro I, Sá Filho MF, Leivas FG. Decreasing the dose of equine chorionic gonadotropin does not affect ovarian or pregnancy responses of purebred taurine and crossbred beef heifers. Anim Reprod Sci 2020; 218:106474. [PMID: 32507255 DOI: 10.1016/j.anireprosci.2020.106474] [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: 05/15/2019] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 10/24/2022]
Abstract
In this study there was evaluation of effects of different doses of equine chorionic gonadotropin (eCG: 200, 300, or 400 IU) administrated at progesterone (P4) plus estradiol-based timed AI (TAI). A total of 1080 heifers were included in the study. There was insertion of the intravaginal P4-device plus administration of 2 mg of estradiol benzoate IM. On D7, 12.5 mg of dinoprost tromethamine IM was administered and on D9, the P4 insert was removed and 0.5 mg of estradiol cypionate IM was administered. Heifers were categorized according to Reproductive Tract Status (RTS; 1-5) and were assigned to one of three treatments: 200 IU (n = 387), 300 IU (n = 357), or 400 IU (n = 336) of eCG. Estrous occurrence was evaluated at TAI 48 h later (D11). A subset of heifers (n = 213) had the largest follicle (LF) evaluated on D9 and on D11, and the formation of a new CL evaluated on D18.There was no effect of eCG treatment on LF on D11 (P = 0.79), occurrence of estrus (P = 0.92), and pregnancy at 30 days after AI (P/AI; 52.2%, 49.8%, and 51.5% for 200 IU, 300 IU, and 400 IU, respectively; P = 0.46). Regardless of the treatment, there was a greater P/AI when heifers had a functional CL, at initiation of the estrous synchronization treatment regimen. It, therefore, is efficacious to reduce the dose of eCG to 300 or 200 IU in purebred taurine and crossbred beef heifers without negative effects on ovarian, estrous or pregnancy responses.
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Affiliation(s)
- Hirya Fernandes Pinto
- Universidade Federal do Pampa (UNIPAMPA), Lab. Biotecnologia da Reprodução (BIOTECH), Rod. BR 472, Km 587, Cx. Postal 118, 97.500-970, Uruguaiana, RS, Brazil
| | - Daniele Missio
- Universidade Federal do Pampa (UNIPAMPA), Lab. Biotecnologia da Reprodução (BIOTECH), Rod. BR 472, Km 587, Cx. Postal 118, 97.500-970, Uruguaiana, RS, Brazil
| | - Daniela Dos Santos Brum
- Universidade Federal do Pampa (UNIPAMPA), Lab. Biotecnologia da Reprodução (BIOTECH), Rod. BR 472, Km 587, Cx. Postal 118, 97.500-970, Uruguaiana, RS, Brazil
| | - Giovane W Carloto
- Universidade Federal do Pampa (UNIPAMPA), Lab. Biotecnologia da Reprodução (BIOTECH), Rod. BR 472, Km 587, Cx. Postal 118, 97.500-970, Uruguaiana, RS, Brazil
| | - Ana Paula Martini
- Embryolab - Laboratório de Embriologia Animal, Departamento de Clínica de Grandes Animais-DCGA, Centro de Ciências Rurais - CCR, Universidade Federal Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Gilson Antônio Pessoa
- Embryolab - Laboratório de Embriologia Animal, Departamento de Clínica de Grandes Animais-DCGA, Centro de Ciências Rurais - CCR, Universidade Federal Santa Maria (UFSM), Santa Maria, RS, Brazil
| | | | - Izaias Claro
- Zoetis Indústria De Produtos Veterinários Ltda, São Paulo, SP, Brazil
| | | | - Fabio Gallas Leivas
- Universidade Federal do Pampa (UNIPAMPA), Lab. Biotecnologia da Reprodução (BIOTECH), Rod. BR 472, Km 587, Cx. Postal 118, 97.500-970, Uruguaiana, RS, Brazil.
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Franchi FF, Satrapa RA, Fontes PK, Santos PH, Razza EM, Emanuelli IP, Ereno RL, Mareco EA, Nogueira MFG, Barros CM, de Souza Castilho AC. Equine chorionic gonadotropin drives the transcriptional profile of immature cumulus-oocyte complexes and in vitro-produced blastocysts of superstimulated Nelore cows. Mol Reprod Dev 2019; 86:1639-1651. [PMID: 31389116 DOI: 10.1002/mrd.23251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 07/13/2019] [Indexed: 12/30/2022]
Abstract
Studies have shown that the use of equine chorionic gonadotropin (eCG), which binds both follicle stimulating hormone (FSH) and luteinizing hormone (LH) receptors, could modify the female reproductive tract. We, thus, aimed to quantify the messenger RNA (mRNA) abundance of genes related to cumulus-oocyte complexes (COCs) and embryo quality in Nelore cows (Bos taurus indicus) submitted to ovarian superstimulation using only FSH (FSH group; n = 10) or replacement of the last two doses of FSH by eCG (FSH/eCG group; n = 10). All animals were slaughtered and the ovarian antral follicles from both groups (10-14 mm in diameter) were aspirated for cumulus, oocyte and in vitro embryo production gene expression analysis. The relative mRNA abundance of 96 genes related to COCs development and embryo quality was measured by RT-qPCR. We found that oocytes are more affected by eCG use and that 35 genes involved in lipid metabolism, oxidative stress, transcriptional control, and cellular development were upregulated in the FSH/eCG group. In blastocysts, lipid metabolism seems to be the main pathway regulated by eCG use. We suggest that these multiple effects could be due to the ability of eCG to bind LHR and FSHR, which could activate multiple signal transduction pathways in the superstimulated ovary, further impacting the transcriptional profile of COCs and blastocysts.
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Affiliation(s)
- Fernanda Fagali Franchi
- Departamento de Farmacologia, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Rafael Augusto Satrapa
- Departamento de Farmacologia, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Patrícia Kubo Fontes
- Departamento de Farmacologia, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Priscila Helena Santos
- Departamento de Farmacologia, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Eduardo Montanari Razza
- Departamento de Farmacologia, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Isabele Picada Emanuelli
- Departamento de Farmacologia, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Ronaldo Luiz Ereno
- Departamento de Farmacologia, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | | | | | - Ciro Moraes Barros
- Departamento de Farmacologia, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
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Kim M, Lee SH, Lee S. Expression of H-ras, RLIP76 mRNA and Protein, and Angiogenic Receptors in Corpus Luteum Tissues during Estrous Cycles. KOREAN JOURNAL OF CLINICAL LABORATORY SCIENCE 2018. [DOI: 10.15324/kjcls.2018.50.4.457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Minseong Kim
- Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea
| | - Sang-Hee Lee
- Institute of Animal Resources, Kangwon National University, Chuncheon, Koera
| | - Seunghyung Lee
- Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea
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