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Bharati J, Kumar S, Mohan NH, Chandra Das B, Devi SJ, Gupta VK. Ovarian follicle transcriptome dynamics reveals enrichment of immune system process during transition from small to large follicles in cyclic Indian Ghoongroo pigs. J Reprod Immunol 2023; 160:104164. [PMID: 37924675 DOI: 10.1016/j.jri.2023.104164] [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: 05/10/2023] [Revised: 10/11/2023] [Accepted: 10/20/2023] [Indexed: 11/06/2023]
Abstract
Ovarian follicular development is a critical determinant of reproductive performance in litter bearing species like pigs, wherein economic gains depend on litter size. The study aimed to gain insight into the differentially expressed genes (DEGs) and signalling pathways regulating follicular growth and maturation in Ghoongroo pigs. Transcriptome profiling of porcine small follicles (SF) and large follicles (LF) was conducted using NovaSeq600 sequencing platform and DEGs were identified using DESeq2 with threshold of Padj. < 0.05 and log2 fold change cut off 0.58 (LF vs. SF). Functional annotations and bioinformatics analysis of DEGs were performed to find out biological functions, signalling pathways and hub genes regulating follicular dynamics. Transcriptome analysis revealed 709 and 479 genes unique to SF and LF stages, respectively, and 11,993 co-expressed genes in both the groups. In total, 507 DEGs (284 upregulated and 223 downregulated) were identified, which encoded for diverse proteins including transcription factors (TFs). These DEGs were functionally linked to response to stimulus, lipid metabolic process, developmental process, extracellular matrix organisation along with the immune system process, indicating wide-ranging mechanisms associated with follicular transition. The enriched KEGG pathways in LF stage consisted of ovarian steroidogenesis, cholesterol and retinol metabolism, cell adhesion molecules, cytokine receptor interaction and immune signalling pathways, depicting intra-follicular control of varied ovarian function. The hub gene analysis revealed APOE, SCARB1, MMP9, CYP17A1, TYROBP as key regulators of follicular development. This study identified candidate genes and TFs providing steroidogenic advantage to LFs which makes them fit for selection into the ovulatory pool of follicles.
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Affiliation(s)
- Jaya Bharati
- Animal Physiology, ICAR-National Research Centre on Pig, Rani, 781131 Guwahati, Assam, India.
| | - Satish Kumar
- Animal Genetics and Breeding, ICAR-National Research Centre on Pig, Rani, 781131 Guwahati, Assam, India
| | - N H Mohan
- Animal Physiology, ICAR-National Research Centre on Pig, Rani, 781131 Guwahati, Assam, India
| | - Bikash Chandra Das
- Animal Physiology, ICAR-National Research Centre on Pig, Rani, 781131 Guwahati, Assam, India
| | - Salam Jayachitra Devi
- Computer Applications and Information Technology, ICAR-National Research Centre on Pig, Rani, 781131 Guwahati, Assam, India
| | - Vivek Kumar Gupta
- Director, ICAR-National Research Centre on Pig, Rani, 781131 Guwahati, Assam, India
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Apoptosis and glucocorticoid-related genes mRNA expression is modulated by coenzyme Q10 supplementation during in vitro maturation and vitrification of bovine oocytes and cumulus cells. Theriogenology 2022; 192:62-72. [DOI: 10.1016/j.theriogenology.2022.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/02/2022] [Accepted: 08/21/2022] [Indexed: 11/20/2022]
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Ruiz-Conca M, Gardela J, Olvera-Maneu S, López-Béjar M, Álvarez-Rodríguez M. NR3C1 and glucocorticoid-regulatory genes mRNA and protein expression in the endometrium and ampulla during the bovine estrous cycle. Res Vet Sci 2022; 152:510-523. [PMID: 36174371 DOI: 10.1016/j.rvsc.2022.09.018] [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: 03/01/2022] [Revised: 09/08/2022] [Accepted: 09/18/2022] [Indexed: 10/14/2022]
Abstract
The bovine reproductive tract exhibits changes during the estrous cycle modulated by the interplay of steroid hormones. Glucocorticoids can be detrimental when stress-induced but are relevant at baseline levels for appropriate reproductive function. Here, an analysis of quantitative real-time PCR was performed to study the bovine glucocorticoid-related baseline gene transcription in endometrial and ampullar tissue samples derived from three time points of the estrous cycle, stage I (Days 1-4), stage III (Days 11-17) and stage IV (Days 18-20). Our results revealed expression differences during stages, as expression observed in the ampulla was higher during the post-ovulatory phase (stage I), including the glucocorticoid receptor NR3C1, and some of its regulators, involved in glucocorticoid availability (HSD11B1 and HSD11B2) and transcriptional actions (FKBP4 and FKBP5). In contrast, in the endometrium, higher expression of the steroid receptors was observed during the late luteal phase (stage III), including ESR1, ESR2, PGRMC1 and PGRMC2, and HSD11B1 expression decreased, while HSD11B2 increased. Moreover, at protein level, FKBP4 was higher expressed during the late luteal phase, and NR3C1 during the pre-ovulatory phase (stage IV). These results suggest that tight regulation of the glucocorticoid activity is promoted in the ampulla, when reproductive events are taking place, including oocyte maturation. Moreover, most expression changes in the endometrium were observed during the late luteal phase, and may be related to the embryonic maternal recognition. In conclusion, the glucocorticoid regulation changes across the estrous cycle and may be playing a role on the reproductive events occurring in the bovine ampulla and endometrium.
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Affiliation(s)
- Mateo Ruiz-Conca
- Division of Children's and Women Health (BKH), Department of Biomedical and Clinical Sciences (BKV), Obstetrics and Gynecology, Linköping University, 58185 Linköping, Sweden; Department of Animal Health and Anatomy, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| | - Jaume Gardela
- Division of Children's and Women Health (BKH), Department of Biomedical and Clinical Sciences (BKV), Obstetrics and Gynecology, Linköping University, 58185 Linköping, Sweden; Department of Animal Health and Anatomy, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Sergi Olvera-Maneu
- Department of Animal Health and Anatomy, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Manel López-Béjar
- Department of Animal Health and Anatomy, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; College of Veterinary Medicine, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Manuel Álvarez-Rodríguez
- Division of Children's and Women Health (BKH), Department of Biomedical and Clinical Sciences (BKV), Obstetrics and Gynecology, Linköping University, 58185 Linköping, Sweden; Department of Animal Health and Anatomy, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
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Anbo N, Suzuki A, Mukangwa M, Takahashi R, Muranishi Y, Tetsuka M. Progesterone stimulates cortisol production in the maturing bovine cumulus-oocyte complex. Theriogenology 2022; 189:183-191. [PMID: 35780557 DOI: 10.1016/j.theriogenology.2022.06.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/13/2022] [Accepted: 06/17/2022] [Indexed: 12/20/2022]
Abstract
In the bovine cumulus oophorus, 11β-hydroxysteroid dehydrogenase type 1 (HSD11B1)-mediated cortisol production dramatically increases during the periovulatory period. This event is closely associated with increased progesterone (P4) production, implying a functional connection between these C21 steroids. In this study, we investigated the mutual regulation of P4 and cortisol production in the bovine cumulus oophorus. Bovine cumulus-oocyte complexes (COCs) were aspirated from follicles 2-5 mm in diameter and subjected to in vitro maturation (IVM) for 24 h in an M199 supplemented with fetal calf serum (FCS) and follicle-stimulating hormone (FSH). COCs were treated with trilostane (0, 0.1, 1, 10 mM), an inhibitor of P4 synthesis, RU486 (0, 0.1, 1, 10 mM), a receptor antagonist for the progesterone receptor (PR) and glucocorticoid receptor (GR), and various concentrations of a synthetic progestogen nomegestrol acetate (NA; 0, 0.001, 0.01, 0.1, 1, 10 mM) to examine effect of P4. The effects of cortisol (0, 0.1, 1, 10 mM) were also examined in the presence or absence of trilostane. Trilostane and RU486 suppressed cumulus expansion, cortisol production, and HSD11B1 but not hexose-6-phosphate dehydrogenase (H6PDH) expression. Concomitant treatment with NA reversed the effects of trilostane. Unlike NA, cortisol did not alter the antagonistic effects of trilostane on cumulus expansion and HSD11B1 expression. Cortisol did not affect P4 production or steroidogenic acute regulatory protein (STAR), cholesterol side-chain cleavage enzyme (CYP11A1), 3β-hydroxysteroid dehydrogenase type 1 (HSD3B1), and HSD11B1 expression. Collectively, these results indicate that locally produced P4 is crucial in regulating the local glucocorticoid environment through PRtg in the maturing bovine cumulus oophorus. Cortisol, however, does not appear to regulate P4 or its production.
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Affiliation(s)
- Nobuhiro Anbo
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Akari Suzuki
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Memory Mukangwa
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Rio Takahashi
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Yuki Muranishi
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Masafumi Tetsuka
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
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Elgendy O, Kitahara G, Taniguchi S, Osawa T. 5-Aminolevulinic acid combined with sodium ferrous citrate mitigates effects of heat stress on bovine oocyte developmental competence. J Reprod Dev 2022; 68:271-277. [PMID: 35705297 PMCID: PMC9334322 DOI: 10.1262/jrd.2021-145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
High summer temperatures have deleterious effects on oocyte developmental competence. The antioxidant and autophagy-related properties of 5-aminolevulinic acid (5-ALA) gives the compound a
broad range of biological activities. This study aimed to evaluate the effects of: 1) a high temperature-humidity index (THI) on the developmental competence of bovine oocytes, and 2) 5-ALA
administration in combination with sodium ferrous citrate (SFC) during in vitro maturation (IVM) on bovine oocyte developmental competence evaluated at high THI. Bovine
ovaries were collected from a local slaughterhouse at moderate environmental temperature (MT; THI of 56.2) and high environmental temperature (HT; THI of 76.7) periods; cumulus-oocyte
complexes (COCs) were aspirated from medium-sized follicles, matured in vitro for 22 h, fertilized, and cultured for 10 days. For COCs collected during the HT period, 0
(control), 0.01, 0.1, 0.5, or 1 µM 5-ALA was added to the maturation medium in combination with SFC at a molar ratio of 1:0.125. The results showed that HT adversely affected blastocyst and
hatching rates compared with MT. Adding 5-ALA/SFC (1 µM/0.125 µM) to the maturation medium of oocytes collected during the HT period improved cumulus cell expansion and blastocyst rates
compared with the no-addition control. In conclusion, this study showed that high THI can disrupt bovine oocyte developmental competence. Adding 5-ALA to SFC ameliorates this negative effect
of heat stress and improves subsequent embryo development.
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Affiliation(s)
- Omnia Elgendy
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-2192, Japan.,Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.,Department of Theriogenology, Faculty of Veterinary Medicine, Benha University, Qalyobia 3736, Egypt
| | - Go Kitahara
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-2192, Japan.,Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Shin Taniguchi
- Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima 739-8528, Japan.,One Health Business Department, Neopharma Japan Co., Ltd., Tokyo 102-0071, Japan
| | - Takeshi Osawa
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-2192, Japan.,Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
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Kuzma-Hunt AG, Truong VB, Favetta LA. Glucocorticoids, Stress and Delta-9 Tetrahydrocannabinol (THC) during Early Embryonic Development. Int J Mol Sci 2021; 22:7289. [PMID: 34298908 PMCID: PMC8307766 DOI: 10.3390/ijms22147289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/24/2021] [Accepted: 06/29/2021] [Indexed: 12/13/2022] Open
Abstract
Elevated molecular stress in women is known to have negative impacts on the reproductive development of oocytes and the embryos prior to implantation. In recent years, the prevalence of cannabis use among women of reproductive age has risen due to its ability to relieve psychological stress and nausea, which are mediated by its psychoactive component, ∆-9-tetrahydrocannabinol (THC). Although cannabis is the most popular recreational drug of the 21st century, much is unknown about its influence on molecular stress in reproductive tissues. The current literature has demonstrated that THC causes dose- and time-dependent alterations in glucocorticoid signaling, which have the potential to compromise morphology, development, and quality of oocytes and embryos. However, there are inconsistencies across studies regarding the mechanisms for THC-dependent changes in stress hormones and how either compounds may drive or arrest development. Factors such as variability between animal models, physiologically relevant doses, and undiscovered downstream gene targets of both glucocorticoids and THC could account for such inconsistencies. This review evaluates the results of studies which have investigated the effects of glucocorticoids on reproductive development and how THC may alter stress signaling in relevant tissues.
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Affiliation(s)
| | | | - Laura A. Favetta
- Reproductive Health and Biotechnology Laboratory, Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada; (A.G.K.-H.); (V.B.T.)
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Ruiz-Conca M, Gardela J, Jauregi-Miguel A, Martinez CA, Rodríguez-Martinez H, López-Béjar M, Alvarez-Rodriguez M. Seminal Plasma Triggers the Differential Expression of the Glucocorticoid Receptor ( NR3C1/GR) in the Rabbit Reproductive Tract. Animals (Basel) 2020; 10:E2158. [PMID: 33228207 PMCID: PMC7699521 DOI: 10.3390/ani10112158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/05/2020] [Accepted: 11/16/2020] [Indexed: 12/20/2022] Open
Abstract
Rabbits are interesting as research animal models for reproduction, due to their condition of species of induced ovulation, with the release of endogenous gonadotropin-releasing hormone (GnRH) due to coitus. Glucocorticoid (GC) signaling, crucial for physiological homeostasis, is mediated through a yet unclear mechanism, by the GC receptor (NR3C1/GR). After mating, the female reproductive tract undergoes dynamic modifications, triggered by gene transcription, a pre-amble for fertilization and pregnancy. This study tested the hypothesis that when ovulation is induced, the expression of NR3C1 is influenced by sperm-free seminal plasma (SP), similarly to after mating (whole semen), along the different segments of the internal reproductive tract of female rabbits. Semen (mating) was compared to vaginal infusion of sperm-free SP (Experiment 1), and changes over time were also evaluated, i.e., 10, 24, 36, 68, and 72 h post-mating, corresponding to specific stages, i.e., ovulation, fertilization, and the interval of early embryo development up to the morula stage (Experiment 2). All does were treated with GnRH to induce ovulation. Samples were retrieved from seven segments of the reproductive tract (from the cervix to infundibulum), at 20 h post-mating or sperm-free SP infusion (Experiment 1) or at 10, 24, 36, 68, and 72 h post-mating (Experiment 2). Gene expression of NR3C1 was analyzed by qPCR. Results showed an increase in NR3C1 expression in the infundibulum compared to the other anatomical regions in the absence of spermatozoa when sperm-free SP infusion was performed (Experiment 1). Moreover, during the embryo transport through the oviduct, the distal isthmus was time-course upregulated, especially at 72 h, when morulae are retained in this anatomical region, while it was downregulated in the distal uterus at 68 h (Experiment 2). The overall results suggest that NR3C1, the GC receptor gene, assessed in the reproductive tract of does for the first time, shows differential expression changes during the interval of oviductal and uterine embryo transport that may imply a relevant role of the GC action, not only close to the site of ovulation and fertilization, but also in the endometrium.
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Affiliation(s)
- Mateo Ruiz-Conca
- Department of Biomedical and Clinical Sciences (BKV), Division of Children’s and Women Health (BKH), Obstetrics and Gynecology, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
- Department of Animal Health and Anatomy, Veterinary Faculty, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain or
| | - Jaume Gardela
- Department of Biomedical and Clinical Sciences (BKV), Division of Children’s and Women Health (BKH), Obstetrics and Gynecology, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
- Department of Animal Health and Anatomy, Veterinary Faculty, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain or
| | - Amaia Jauregi-Miguel
- Department of Biomedical and Clinical Sciences (BKV), Division of Molecular Medicine and Virology (MMV), Linköping University, 58185 Linköping, Sweden;
| | - Cristina A. Martinez
- Department of Biomedical and Clinical Sciences (BKV), Division of Children’s and Women Health (BKH), Obstetrics and Gynecology, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
| | - Heriberto Rodríguez-Martinez
- Department of Biomedical and Clinical Sciences (BKV), Division of Children’s and Women Health (BKH), Obstetrics and Gynecology, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
| | - Manel López-Béjar
- Department of Animal Health and Anatomy, Veterinary Faculty, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain or
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Manuel Alvarez-Rodriguez
- Department of Biomedical and Clinical Sciences (BKV), Division of Children’s and Women Health (BKH), Obstetrics and Gynecology, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
- Department of Animal Health and Anatomy, Veterinary Faculty, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain or
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Ruiz-Conca M, Gardela J, Martínez CA, Wright D, López-Bejar M, Rodríguez-Martínez H, Álvarez-Rodríguez M. Natural Mating Differentially Triggers Expression of Glucocorticoid Receptor (NR3C1)-Related Genes in the Preovulatory Porcine Female Reproductive Tract. Int J Mol Sci 2020; 21:ijms21124437. [PMID: 32580389 PMCID: PMC7352215 DOI: 10.3390/ijms21124437] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 06/20/2020] [Indexed: 12/15/2022] Open
Abstract
Mating initiates dynamic modifications of gene transcription in the female reproductive tract, preparing the female for fertilization and pregnancy. Glucocorticoid signaling is essential for the homeostasis of mammalian physiological functions. This complex glucocorticoid regulation is mediated through the glucocorticoid receptor, also known as nuclear receptor subfamily 3 group C member 1 (NR3C1/GR) and related genes, like 11β-hydroxysteroid dehydrogenases (HSD11Bs) and the FK506-binding immunophilins, FKBP5 and FKBP4. This study tested the transcriptome changes in NR3C1/GR regulation in response to natural mating and/or cervical deposition of the sperm-peak ejaculate fraction collected using the gloved-hand method (semen or only its seminal plasma), in the preovulatory pig reproductive tract (cervix to infundibulum, 24 h after mating/insemination/infusion treatments). Porcine cDNA microarrays revealed 22 NR3C1-related transcripts, and changes in gene expression were triggered by all treatments, with natural mating showing the largest differences, including NR3C1, FKBP5, FKBP4, hydroxysteroid 11-beta dehydrogenase 1 and 2 (HSD11B1, HSD11B2), and the signal transducer and activator of transcription 5A (STAT5A). Our data suggest that natural mating induces expression changes that might promote a reduction of the cortisol action in the oviductal sperm reservoir. Together with the STAT-mediated downregulation of cytokine immune actions, this reduction may prevent harmful effects by promoting tolerance towards the spermatozoa stored in the oviduct and perhaps elicit spermatozoa activation and detachment after ovulation.
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Affiliation(s)
- Mateo Ruiz-Conca
- Department Biomedical and Clinical Sciences (BKV), BKH/OG, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
- Department of Animal Health and Anatomy, Veterinary Faculty, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain;
| | - Jaume Gardela
- Department Biomedical and Clinical Sciences (BKV), BKH/OG, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
- Department of Animal Health and Anatomy, Veterinary Faculty, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain;
| | - Cristina Alicia Martínez
- Department Biomedical and Clinical Sciences (BKV), BKH/OG, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
| | - Dominic Wright
- Department of Physics, Chemistry and Biology, Faculty of Science and Engineering; Linköping University, 58183 Linköping, Sweden;
| | - Manel López-Bejar
- Department of Animal Health and Anatomy, Veterinary Faculty, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain;
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Heriberto Rodríguez-Martínez
- Department Biomedical and Clinical Sciences (BKV), BKH/OG, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
| | - Manuel Álvarez-Rodríguez
- Department Biomedical and Clinical Sciences (BKV), BKH/OG, Linköping University, 58185 Linköping, Sweden; (M.R.-C.); (J.G.); (C.A.M.); (H.R.-M.)
- Department of Animal Health and Anatomy, Veterinary Faculty, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain;
- Correspondence: ; Tel.: +46-(0)72942-7883
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