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Cox JF, Carrasco A, Navarrete F, Allende R, Saravia F, Dorado J. Unveiling the Role of IGF-I in Fertility: Effect of Long-Acting Bovine Somatotropin (bST) on Terminal Follicular Development and Fertility during an Annual Reproductive Cycle in Sheep. Animals (Basel) 2024; 14:1097. [PMID: 38612336 PMCID: PMC11011003 DOI: 10.3390/ani14071097] [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: 01/25/2024] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 04/14/2024] Open
Abstract
The study aimed to assess the effect of long-acting bST treatment, in a dose that only increases IGF-I plasma concentrations, on ovarian and fertility markers of estrous synchronized ewes that were fed to keep their bodyweight. Three experiments were designed to evaluate this effect: in Experiment 1, 18 ewes were distributed in groups (bST 0, 30, 50 mg) to measure plasma IGF-I and insulin for 15 days; in Experiment 2, 92 ewes (5 replicates) in two groups (0 and 30 mg bST) were synchronized using a 6-day progesterone protocol during the breeding season to assess the effect of bST on follicular and luteal performances, estrous and ovulation, and fertility after mating. In Experiment 3, 50 ewes (3 replicates) were used to repeat the study before but during anestrus. Results indicate that 50 mg bST increased IGF-I and insulin plasma concentrations, but 30 mg bST only increased IGF-I concentrations; and that only during the breeding season did 30 mg bST increase the number of lambs born and the reproductive success of ovulatory-sized follicles compared to controls. This occurred without it affecting any other reproductive marker. In conclusion, 30 mg bST treatment may improve oocyte competence for fertility during the breeding season.
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Affiliation(s)
- José Francisco Cox
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Vicente Méndez 595, Chillán 3780000, Chile (F.S.)
| | - Albert Carrasco
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Vicente Méndez 595, Chillán 3780000, Chile (F.S.)
| | - Felipe Navarrete
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Vicente Méndez 595, Chillán 3780000, Chile (F.S.)
| | - Rodrigo Allende
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Vicente Méndez 595, Chillán 3780000, Chile (F.S.)
| | - Fernando Saravia
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Vicente Méndez 595, Chillán 3780000, Chile (F.S.)
| | - Jesús Dorado
- Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, Campus Rabanales, 14014 Cordoba, Spain
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Wang Y, Guo Y, Duan C, Li J, Ji S, Yan H, Liu Y, Zhang Y. LncGSAR Controls Ovarian Granulosa Cell Steroidogenesis via Sponging MiR-125b to Activate SCAP/SREBP Pathway. Int J Mol Sci 2022; 23:ijms232012132. [PMID: 36293007 PMCID: PMC9603659 DOI: 10.3390/ijms232012132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 09/30/2022] [Accepted: 09/30/2022] [Indexed: 11/30/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) have been shown to play important roles in livestock fecundity, and many lncRNAs that affect follicular development and reproductive diseases have been identified in the ovary. However, only a few of them have been functionally annotated and mechanistically validated. In this study, we identified a new lncRNA (lncGSAR) and investigated its effects on the proliferation and steroidogenesis of ovine granulosa cells (GCs). High concentrations of glucose (add 33.6 mM glucose) caused high expression of lncGSAR in GCs by regulating its stability, and lncGSAR overexpression promoted GCs proliferation, estrogen secretion, and inhibited progesterone secretion, whereas interference with lncGASR had the opposite effect. Next, we found that the RNA molecules of lncGSAR act on MiR-125b as competitive endogenous RNA (ceRNA), and SREBP-cleavage-activating protein (SCAP) was verified as a target of MiR-125b. LncGASR overexpression increased the expression of SCAP, SREBP, and steroid hormone-related proteins, which can be attenuated by MiR-125b. Our results demonstrated that lncGSAR can act as a ceRNA to activate SCAP/SREBP signaling by sponging MiR-125b to regulate steroid hormone secretion in GCs. These findings provide new insights into the mechanisms of nutrient-regulated follicle development in ewes.
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Affiliation(s)
- Yong Wang
- Laboratory of Small Ruminant Genetics, Breeding and Reproduction, College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Yunxia Guo
- College of Life Science, Hebei Agricultural University, Baoding 071000, China
| | - Chunhui Duan
- Laboratory of Small Ruminant Genetics, Breeding and Reproduction, College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Junjie Li
- Laboratory of Small Ruminant Genetics, Breeding and Reproduction, College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Shoukun Ji
- Laboratory of Small Ruminant Genetics, Breeding and Reproduction, College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Huihui Yan
- Laboratory of Small Ruminant Genetics, Breeding and Reproduction, College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Yueqin Liu
- Laboratory of Small Ruminant Genetics, Breeding and Reproduction, College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Yingjie Zhang
- Laboratory of Small Ruminant Genetics, Breeding and Reproduction, College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
- Correspondence: ; Tel.: +86-31-2752-8366; Fax: +86-31-2752-8886
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Wang Y, Duan C, Guo Y, Li J, He H, Li R, Zhang Y, Liu Y. Effects of glucose on glycolysis and steroidogenesis as well as related gene expression in ovine granulosa cells in vitro. Small Rumin Res 2022. [DOI: 10.1016/j.smallrumres.2022.106766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Wang Y, Guo Y, Duan C, Yang R, Zhang L, Liu Y, Zhang Y. Long Non-Coding RNA GDAR Regulates Ovine Granulosa Cells Apoptosis by Affecting the Expression of Apoptosis-Related Genes. Int J Mol Sci 2022; 23:ijms23095183. [PMID: 35563579 PMCID: PMC9104640 DOI: 10.3390/ijms23095183] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 04/30/2022] [Accepted: 04/30/2022] [Indexed: 02/01/2023] Open
Abstract
Short-term dietary supplementation of ewes during the luteal phase can increase fertility, most probably by stimulating glucose uptake by the follicles. However, the molecular mechanism of glucose regulation of follicular development has not yet been clarified, especially the further study of long non-coding RNA (lncRNA) in determining fertility during follicular development. We generated granulosa cell (GC) models of different doses of glucose (0, 2.1, 4.2, 8.4, 16.8 and 33.6 mM), and observed that the highest cell viability was recorded in the 8.4 mM group and the highest apoptosis rates were recorded in the 33.6 mM group. Therefore, a control group (n = 3, 0 mM glucose), a low glucose group (n = 3, add 8.4 mM glucose), and a high glucose group (n = 3, add 33.6 mM glucose) of GCs were created for next whole genomic RNA sequencing. In total, 18,172 novel lncRNAs and 510 annotated lncRNAs were identified in the GCs samples. Gene Ontology indicated that differentially expressed lncRNAs associated with cell apoptosis were highly enriched. Kyoto Encyclopedia of Genes and Genomes enrichment analysis of lncRNA target genes found that the apoptosis pathway and the p53 signaling pathway were both enriched. Furthermore, we focused on the function of a lncGDAR and verified that lncGDAR could influence cell apoptosis in GC development through affecting the mRNA and protein expression of apoptosis-related markers. These results provide the basis for further study of the lncRNA regulation mechanism in nutrition on female fertility.
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Affiliation(s)
- Yong Wang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China; (Y.W.); (C.D.); (R.Y.); (L.Z.); (Y.L.)
| | - Yunxia Guo
- College of Life Science, Hebei Agricultural University, Baoding 071000, China;
| | - Chunhui Duan
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China; (Y.W.); (C.D.); (R.Y.); (L.Z.); (Y.L.)
| | - Ruochen Yang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China; (Y.W.); (C.D.); (R.Y.); (L.Z.); (Y.L.)
| | - Lechao Zhang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China; (Y.W.); (C.D.); (R.Y.); (L.Z.); (Y.L.)
| | - Yueqin Liu
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China; (Y.W.); (C.D.); (R.Y.); (L.Z.); (Y.L.)
| | - Yingjie Zhang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China; (Y.W.); (C.D.); (R.Y.); (L.Z.); (Y.L.)
- Correspondence: ; Tel.: +86-312-7528366
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Rubio I, White FJ, Spicer LJ, Wettemann RP. Postpartum nutrition affects the insulin-like growth factor system in dominant follicles and plasma of anestrous beef cows. Anim Reprod Sci 2021; 229:106760. [PMID: 33962315 DOI: 10.1016/j.anireprosci.2021.106760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 04/24/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
Effects of nutrition on insulin-like growth factor-I (IGF-I), IGF binding proteins (IGFBP), and insulin in plasma and dominant follicles were evaluated at day 72 and 56 (Exp. 1, n = 12 and Exp. 2, n = 28, respectively) postpartum in anovulatory primiparous beef cows. Cows were stratified based on body condition score at calving and randomly assigned to nutritional treatments: maintain (M), 2.27 kg of a 40 % CP supplement per day and ad libitum hay; or gain (G), ad libitum access to a 50 % concentrate diet and ad libitum hay. Blood samples were collected twice weekly starting 30 days postpartum. Ovarian follicles were evaluated using ultrasonography commencing 42 (Exp. 1) or 30 (Exp. 2) days postpartum. Body weight and condition score were greater (P < 0.05) for cows of G than M groups and postpartum interval to luteal function was longer for cows of the M than G group. Insulin and IGF-I concentrations in follicular fluid (FF) and plasma were greater (P < 0.05) for cows of the G than M group at follicular aspiration. Plasma and FF IGFBP4 and IGFBP5 concentrations were greater (P < 0.05) in Exp. 2, and IGFBP5 was greater in Exp. 1 for cows of the G than M group. Treatment did not affect FF steroid concentrations or granulosal cell CYP19A1, PAPPA, IGFBP4, and IGFBP5 mRNA abundance. These results indicate concentrations of IGF-I, insulin, IGFBP4, and IGFBP5 in FF and plasma are affected by nutritional intake and may be related to follicular function.
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Affiliation(s)
- I Rubio
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - F J White
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - L J Spicer
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - R P Wettemann
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, 74078, USA.
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Zhang GM, Guo YX, Cheng CY, El-Samahy MA, Tong R, Gao XX, Deng KP, Wang F, Lei ZH. Arginine infusion rescues ovarian follicular development in feed-restricted Hu sheep during the luteal phase. Theriogenology 2020; 158:75-83. [PMID: 32932187 DOI: 10.1016/j.theriogenology.2020.09.002] [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: 05/26/2020] [Revised: 07/27/2020] [Accepted: 09/01/2020] [Indexed: 11/16/2022]
Abstract
The aim of this study was to investigate the molecular mechanisms of arginine (Arg) on follicular development of acute feed-restricted ewes during the luteal phase. From day 6 of the estrous cycle, 24 multiparous Hu sheep were randomly assigned into three groups: control group (a maintenance diet; n = 6), feed restriction group (0.5 maintenance diet, saline infusion; n = 9) and Arg treatment group (0.5 maintenance diet, infusion with 155 μmol of Arg-HCl/kg body weight; n = 9). The intravenous administrations were performed three times per day from day 6 to day 15 of the estrous cycle. At the end of treatment, the hypothalamus and pituitary were collected, as well as the follicular fluid (FF) and granulose cells (GCs) in the ≥2.5 mm follicles. The transcription level of NPVF was significantly increased, and the expression level of GNRH was significantly decreased in the hypothalamus with feed restriction. In addition, feed restriction significantly decreased the number of ≥2.5 mm follicles in the ovaries. In the ≥2.5 mm follicles, feed restriction significantly increased estradiol (E2) level in FF and the expression levels of steroidogenesis related genes (STAR, 3BHSD and CYP19A1) in GCs, while significantly decreased the expressions of FSHR and cell proliferation related genes (YAP1, CCND1 and PCNA) in GCs. Moreover, the activities of glucose metabolism enzymes (PFKP and G6PDH) were significantly decreased in GCs of the ≥2.5 mm follicles with feed restriction. Interestingly, as a precursor of nitric oxide, Arg supplementation can rescue the effects of feed restriction on follicular development by enhancing glucose metabolism and cell proliferation of GCs, and alleviating the abnormal E2 secretion in the ≥2.5 mm follicles, accompanied with recovering the expressions of NPVF and GNRH in the hypothalamus. These findings will be helpful for understanding the role of nutrition and Arg in sheep follicular development.
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Affiliation(s)
- Guo-Min Zhang
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yi-Xuan Guo
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, 210095, China; College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - Chun-Yu Cheng
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, 210095, China
| | - M A El-Samahy
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ran Tong
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiao-Xiao Gao
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kai-Ping Deng
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng Wang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Zhi-Hai Lei
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
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Baddela VS, Sharma A, Vanselow J. Non-esterified fatty acids in the ovary: friends or foes? Reprod Biol Endocrinol 2020; 18:60. [PMID: 32505200 PMCID: PMC7275390 DOI: 10.1186/s12958-020-00617-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 05/25/2020] [Indexed: 12/23/2022] Open
Abstract
A majority of common metabolic diseases can result in excessive lipolysis, leading to elevated levels of non-esterified fatty acids (NEFAs) in the body fluids. In females, increased NEFA levels in the follicular fluid markedly alter the functions of intrafollicular cells such as granulosa cells (GCs) and oocytes. Therefore, elevated levels of NEFAs have been suggested to be a significant player of subfertility in females of both human and economically important animal species such as cattle, buffalo, sheep, pig, chicken, and dog. However, the effects imposed by saturated and unsaturated fatty acids (SFAs and UFAs) on ovarian follicles are controversial. The present review emphasizes that SFAs induce apoptosis in granulosa and cumulus cells of ovarian follicles in different species. They further could adversely affect oocyte maturation and developmental competence. Many types of UFAs affect steroidogenesis and proliferation processes and could be detrimental for follicular cells, especially when at elevated concentrations. Interestingly, monounsaturated fatty acids (MUFAs) appear to contribute to the etiology of the polycystic ovarian syndrome (PCOS) as they were found to induce the transcription and translation of the androgenic transcription factor SOX9 while downregulating its estrogenic counterpart FOXL2 in GCs. Overall, this review presents our revised understanding of the effects of different fatty acids on the female reproductive success, which may allow other researchers and clinicians to investigate the mechanisms for treating metabolic stress-induced female infertility.
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Affiliation(s)
- Vijay Simha Baddela
- grid.418188.c0000 0000 9049 5051Institute of Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Arpna Sharma
- grid.418188.c0000 0000 9049 5051Institute of Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Jens Vanselow
- grid.418188.c0000 0000 9049 5051Institute of Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
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Omari M, Lange A, Plöntzke J, Röblitz S. Model-based exploration of the impact of glucose metabolism on the estrous cycle dynamics in dairy cows. Biol Direct 2020; 15:2. [PMID: 31941545 PMCID: PMC6964039 DOI: 10.1186/s13062-019-0256-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 11/28/2019] [Accepted: 12/24/2019] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Nutrition plays a crucial role in regulating reproductive hormones and follicular development in cattle. This is visible particularly during the time of negative energy balance at the onset of milk production after calving. Here, elongated periods of anovulation have been observed, resulting from alterations in luteinizing hormone concentrations, likely caused by lower glucose and insulin concentrations in the blood. The mechanisms that result in a reduced fertility are not completely understood, although a close relationship to the glucose-insulin metabolism is widely supported. RESULTS Following this idea, we developed a mathematical model of the hormonal network combining reproductive hormones and hormones that are coupled to the glucose compartments within the body of the cow. The model is built on ordinary differential equations and relies on previously introduced models on the bovine estrous cycle and the glucose-insulin dynamics. Necessary modifications and coupling mechanisms are thoroughly discussed. Depending on the composition and the amount of feed, in particular the glucose content in the dry matter, the model quantifies reproductive hormones and follicular development over time. Simulation results for different nutritional regimes in lactating and non-lactating dairy cows are examined and compared with experimental studies. The simulations describe realistically the effects of nutritional glucose supply on the ovulatory cycle of dairy cattle. CONCLUSIONS The mathematical model enables the user to explore the relationship between nutrition and reproduction by running simulations and performing parameter studies. Regarding its applicability, this work is an early attempt towards developing in silico feeding strategies and may eventually help to refine and reduce animal experiments. REVIEWERS This article was reviewed by John McNamara and Tin Pang (nominated by Martin Lercher).
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Affiliation(s)
- Mohamed Omari
- Computational Systems Biology Group, Zuse Institute Berlin, Takustr. 7, Berlin, Germany
| | - Alexander Lange
- Department of Applied Biosciences and Process Engineering, Anhalt University of Applied Sciences, Bernburger Str. 55, Köthen, 06366 Germany
| | - Julia Plöntzke
- Computational Systems Biology Group, Zuse Institute Berlin, Takustr. 7, Berlin, Germany
| | - Susanna Röblitz
- Computational Biology Unit, University of Bergen, Department of Informatics, Thormøhlensgate 55, Bergen, 5008 Norway
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Matthews D, Diskin MG, Kenny DA, Creevey CJ, Keogh K, Waters SM. Effect of short term diet restriction on gene expression in the bovine hypothalamus using next generation RNA sequencing technology. BMC Genomics 2017; 18:857. [PMID: 29121875 PMCID: PMC5680758 DOI: 10.1186/s12864-017-4265-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 11/02/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Negative energy balance (NEB) is an imbalance between energy intake and energy requirements for lactation and body maintenance affecting high-yielding dairy cows and is of considerable economic importance due to its negative impact on fertility and health in dairy herds. It is anticipated that the cow hypothalamus experiences extensive biochemical changes during the early post partum period in an effort to re-establish metabolic homeostasis. However, there is variation in the tolerance to NEB between individual cows. In order to understand the genomic regulation of ovulation in hypothalamic tissue during NEB, mRNA transcriptional patterns between tolerant and sensitive animals were examined. A short term dietary restriction heifer model was developed which induced abrupt onset of anoestrus in some animals (Restricted Anovulatory; RA) while others maintained oestrous cyclicity (Restricted Ovulatory; RO). A third control group (C) received a higher level of normal feeding. RESULTS A total of 15,295 genes were expressed in hypothalamic tissue. Between RA and C groups 137 genes were differentially expressed, whereas between RO and C, 32 genes were differentially expressed. Differentially expressed genes were involved in the immune response and cellular motility in RA and RO groups, respectively, compared to C group. The largest difference between groups was observed in the comparison between RA and RO heifers, with 1094 genes shown to be significantly differentially expressed (SDE). Pathway analysis showed that these SDE genes were associated with 6 canonical pathways (P < 0.01), of which neuroactive ligand-receptor interaction was the most significant. Within the comparisons the main over-represented pathway functions were immune response including neuroprotection (CXCL10, Q1KLR3, IFIH1, IL1 and IL8; RA v C and RA v RO); energy homeostasis (AgRP and NPY; RA v RO); cell motility (CADH1, DSP and TSP4; RO v C) and prevention of GnRH release (NTSR1 IL1α, IL1β, NPY and PACA; RA v RO). CONCLUSIONS This information will assist in understanding the genomic factors regulating the influence of diet restriction on fertility and may assist in optimising nutritional and management systems for the improvement in reproductive performance.
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Affiliation(s)
- Daragh Matthews
- Animal and Grassland Research and Innovation Centre, Teagasc, Mellows Campus, Athenry, Co. Galway, Ireland.,School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Michael G Diskin
- Animal and Grassland Research and Innovation Centre, Teagasc, Mellows Campus, Athenry, Co. Galway, Ireland
| | - David A Kenny
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland
| | - Christopher J Creevey
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland
| | - Kate Keogh
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland
| | - Sinead M Waters
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland.
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Comin A, Peric T, Montillo M, Cappa A, Marchi V, Veronesi MC, Prandi A. Luteal activity and effect of dietary energy restriction on follicular development in lactating cows. Reprod Domest Anim 2017; 52:632-639. [PMID: 28378464 DOI: 10.1111/rda.12959] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 02/09/2017] [Indexed: 11/29/2022]
Abstract
The aim of this research has been to evaluate the presence of anomalies in the ovarian cycle activity during postpartum and to verify whether 72-hr dietary fasting during the dominance phase, the phase before ovulation, might modify the ovarian follicle population. The presence of anomalies in ovarian cycle activity has been evaluated in 30 Italian Friesian cows starting from 20 days postpartum until 211 days of lactation. Long oestrus and brief dioestrus or scarce luteal activity have been the main anomalies found through measuring progesterone concentrations in the whey. Until 100 days of lactation, the BCS values of the problematic animals have been significantly lower than those in animals with normal ovarian activity. After 100 days of lactation, the ovarian anomalies continued to appear despite the fact that all the animals have reached comparable BCS values. Starting from the results of this trial, the effect of 72-hr dietary fasting on dominant follicles has been studied in six cows. Ultrasonography revealed that the diameter of the follicles at 71 days postpartum has been significantly lower than at 181 days. A 72-hr dietary restriction at 101 and 211 days postpartum did not affect the size of the dominant follicle. However, at 101 days postpartum, half of the animals presented follicular cysts. The effect of fasting differed if the animal has been in early postpartum or 211 days of lactation. Further researches are necessary to understand how different metabolic conditions can modify the follicular population but on the other hand the study shows the utility for farmers and field veterinarians of monitoring the resumption of the ovarian cycle postpartum through the whey progesterone concentrations.
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Affiliation(s)
- A Comin
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - T Peric
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy.,Center for Biomedical Science and Engineering, University of Nova Gorica, Nova Gorica, Slovenia
| | - M Montillo
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - A Cappa
- Evoluzione S.r.l., Sossano (VI), Italy
| | | | - M C Veronesi
- Department of Veterinary Medicine, University of Milano, Milano, Italy
| | - A Prandi
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
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Harrath AH, Østrup O, Rafay J, Koničková (Florkovičová) I, Laurincik J, Sirotkin AV. Metabolic state defines the response of rabbit ovarian cells to leptin. Reprod Biol 2017; 17:19-24. [DOI: 10.1016/j.repbio.2016.11.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 11/12/2016] [Accepted: 11/18/2016] [Indexed: 01/31/2023]
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12
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Astessiano AL, Meikle A, Fajardo M, Gil J, Mattiauda DA, Chilibroste P, Carriquiry M. Metabolic and endocrine profiles and hepatic gene expression of Holstein cows fed total mixed ration or pasture with different grazing strategies during early lactation. Acta Vet Scand 2015; 57:70. [PMID: 26475473 PMCID: PMC4609040 DOI: 10.1186/s13028-015-0163-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 10/05/2015] [Indexed: 12/19/2022] Open
Abstract
Background In dairy mixed production systems, maximizing pasture intake and total mixed ration (TMR) supplementation are management tools used to increase dry matter and energy intake in early lactation. The objective was to evaluate metabolic and endocrine profiles and hepatic gene expression of Holstein cows fed either TMR ad libitum (without grazing) or diets combining TMR (50 % ad libitum DM intake) and pasture with different grazing strategies (6 h in one grazing session or 9 h in two grazing sessions) in early lactation. Pluriparous cows were grouped by calving date, blocked within group by body weight and body condition score (BCS) and randomly assigned to one of three feeding strategies from calving (day 0) to 60 days postpartum: control cows fed TMR ad libitum (G0; confined cows fed 100 % TMR without access to pasture), pasture grazing with 6 h of access in one session supplemented with 50 % TMR (G1), and 9 h of access in two sessions supplemented with 50 % TMR (G2). Results Net energy (NE), but not metabolizable protein (MP), demands for maintenance and/or milk increased in G2 when compared with G1 and G0 cows, respectively. However, NE and MP balances were lower in G1 and G2 than G0 cows. Cow BCS at +55 days was greater in G0 than G2 cows and probability of cows cycling during the first month was greater in G0 and G1 than G2 cows. During the postpartum period, non-esterified fatty acids were greater in G1 than G2 and G0 and β-hydroxybutyrate was greater in G1 and G2 than G0 cows. Plasma insulin was greater and insulin-like growth factor (IGF)-I tended to be greater in G0 than G2 cows, leptin was greater in G2 and G0 and adiponectin were greater in G2 cows. Hepatic expression of growth hormonereceptor-1A and IGF1 mRNA decreased while IGF binding proteins 1,2,4,5 and 6 (IGFBP) mRNA as well as mRNA expression of insulin, leptin (LEPRb) and adiponectin-2 receptors increased from pre to postpartum in all cows. However, only hepatic IGFBP6 and LEPRb mRNA were greater in G2 than G0 and G1 cows, respectively. Conclusion Metabolic-endocrine profiles of cows with different feeding strategies in early lactation reflected not only changes in milk energy output and energy balance but also in walking and grazing activity. Concentrations of insulin and IGF-I were increased in G0 cows whereas plasma adiponectin and both, insulin and leptin sensitivity were improved G2 cows. Increased NE demands in G2 cows when compared to G1 and G0 cows, implied a metabolic stress that impacted negatively on reproductive function. Electronic supplementary material The online version of this article (doi:10.1186/s13028-015-0163-6) contains supplementary material, which is available to authorized users.
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The effects of short term dietary restriction on haematological responses and leukocyte gene expression of anovulatory and ovulatory beef heifers. Res Vet Sci 2015; 98:145-53. [DOI: 10.1016/j.rvsc.2014.11.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 10/14/2014] [Accepted: 11/10/2014] [Indexed: 11/20/2022]
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Emori MM, Drapkin R. The hormonal composition of follicular fluid and its implications for ovarian cancer pathogenesis. Reprod Biol Endocrinol 2014; 12:60. [PMID: 24997727 PMCID: PMC4105128 DOI: 10.1186/1477-7827-12-60] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 06/27/2014] [Indexed: 12/21/2022] Open
Abstract
Ovulation has long been associated with an increased risk in ovarian cancer, yet the underlying molecular mechanisms remain obscure. Two aspects of ovulation have been linked to ovarian cancer pathogenesis. The first is the impact of repetitive tissue injury and repair that occurs with each ovulatory event. The second is the release of follicular fluid that accompanies the follicular rupture and its effect on the ovarian and fallopian tube epithelial cells. Hormones are an important component of follicular fluid, which transiently bathes the ovarian surface and fallopian tube epithelium during ovulation. Much work has been done exploring the role of hormones in fertility, but some, such as estrogen, have also been implicated in the pathogenesis of ovarian and other cancers. Understanding the role of hormones within follicular fluid, as well as how they are altered in disorders which increase ovarian cancer risk, will enhance our ability to assess risk and develop preventative strategies. This review provides an in depth discussion of the logistics of using and studying follicular fluid in ovarian cancer research, and discusses the fluctuations in follicular fluid hormone levels during normal physiological processes versus conditions that increase ovarian cancer risk.
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Affiliation(s)
- Megan M Emori
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Boston, MA 02115, USA
| | - Ronny Drapkin
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Boston, MA 02115, USA
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Bender RW, Hackbart KS, Dresch AR, Carvalho PD, Vieira LM, Crump PM, Guenther JN, Fricke PM, Shaver RD, Combs DK, Wiltbank MC. Effects of acute feed restriction combined with targeted use of increasing luteinizing hormone content of follicle-stimulating hormone preparations on ovarian superstimulation, fertilization, and embryo quality in lactating dairy cows. J Dairy Sci 2013; 97:764-78. [PMID: 24359829 DOI: 10.3168/jds.2013-6926] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 08/24/2013] [Indexed: 11/19/2022]
Abstract
Multiple metabolic and hormonal factors can affect the success of protocols for ovarian superstimulation. In this study, the effect of acute feed restriction and increased LH content in the superstimulatory FSH preparation on numbers of ovulations, fertilization, and embryo quality in lactating dairy cows was evaluated. Two experiments were performed using a Latin square design with treatments arranged as a 2 × 2 factorial: feed restriction (FR; 25% reduction in dry matter intake) compared with ad libitum (AL) feeding, combined with high (H) versus low (L) LH in the last 4 injections of the superstimulatory protocol. As expected, FR decreased circulating insulin concentrations (26.7 vs. 46.0 μU/mL). Two analyses were performed: one that evaluated the complete Latin square in experiment 2 and a second that evaluated only the first periods of experiments 1 and 2. For both analyses, follicle numbers, ovulation rates, and corpora lutea on d 7 were not different. In the first period analysis of experiments 1 and 2, we observed an interaction between feed allowance and amount of LH on fertilization rates, percentage of embryos or oocytes that were quality 1 and 2 embryos, and number of embryos or oocytes that were degenerate. Fertilization rates were greater for the AL-L (89.4%) and FR-H (80.1%) treatments compared with the AL-H (47.9%) and FR-L (59.9%) treatments. Similarly, the proportion of total embryos or oocytes designated as quality 1 and 2 embryos was greater for AL-L (76.7%) and FR-H (73.4%) treatments compared with AL-H (35.6%) and FR-L (47.3%) treatments. In addition, the number of degenerate embryos was decreased for AL-L (1.3) and FR-H (0.4) treatments compared with the AL-H (2.6) and FR-L (2.3) treatments. Thus, cows with either too low (FR-L) or too high (AL-H) insulin and LH stimulation had lesser embryo production after superstimulation because of reduced fertilization rate and increased percentage of degenerate embryos. Therefore, interaction of the gonadotropin content of the superstimulatory preparation with the nutritional program of the donor cow needs to be considered to optimize success of ovarian superstimulatory protocols.
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Affiliation(s)
- R W Bender
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - K S Hackbart
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - A R Dresch
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - P D Carvalho
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - L M Vieira
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - P M Crump
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - J N Guenther
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - P M Fricke
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - R D Shaver
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - D K Combs
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706
| | - M C Wiltbank
- Department of Dairy Science, University of Wisconsin-Madison, 1675 Observatory Dr., Madison 53706.
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Lents CA, White FJ, Ciccioli NH, Floyd-White LN, Rubio I, Keisler DH, Spicer LJ, Wettemann RP. Metabolic status, gonadotropin secretion, and ovarian function during acute nutrient restriction of beef heifers1,2. J Anim Sci 2013; 91:4146-57. [DOI: 10.2527/jas.2013-6342] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C. A. Lents
- Department of Animal Science, Oklahoma Agricultural Experiment Station, Stillwater 74078-0425
| | - F. J. White
- Department of Animal Science, Oklahoma Agricultural Experiment Station, Stillwater 74078-0425
| | - N. H. Ciccioli
- Department of Animal Science, Oklahoma Agricultural Experiment Station, Stillwater 74078-0425
| | - L. N. Floyd-White
- Department of Animal Science, Oklahoma Agricultural Experiment Station, Stillwater 74078-0425
| | - I. Rubio
- Department of Animal Science, Oklahoma Agricultural Experiment Station, Stillwater 74078-0425
| | - D. H. Keisler
- Division of Animal Sciences, University of Missouri, Columbia 65211
| | - L. J. Spicer
- Department of Animal Science, Oklahoma Agricultural Experiment Station, Stillwater 74078-0425
| | - R. P. Wettemann
- Department of Animal Science, Oklahoma Agricultural Experiment Station, Stillwater 74078-0425
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