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Reproductive cycle and in vitro maturation of canine oocyte: A meta-analysis approach. Theriogenology 2022; 188:22-27. [DOI: 10.1016/j.theriogenology.2022.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 11/19/2022]
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Beneficial Effects of L-Carnitine Supplementation during IVM of Canine Oocytes on Their Nuclear Maturation and Development In Vitro. Animals (Basel) 2021; 11:ani11020581. [PMID: 33672295 PMCID: PMC7927128 DOI: 10.3390/ani11020581] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/12/2021] [Accepted: 02/15/2021] [Indexed: 02/06/2023] Open
Abstract
Simple Summary In vitro production of canine embryos is a technique that can be used as a model to conserve endangered species and to establish efficient breeding systems for domestic dogs. However, compared with other species, the success rates of in vitro embryo production (IVEP) in dogs are low. L-Carnitine (LC) is a small water-soluble molecule; it plays an essential role in fatty acid metabolism and acts as a potent antioxidant. Various studies have reported the beneficial impacts of LC on IVEP in many mammalian species other than dogs. Therefore, these experiments investigated the effects of LC supplementation during in vitro maturation (IVM) on canine oocytes maturation, fertilization, and development in vitro. We show that the supplementation of IVM media with LC has positive impacts on oocyte maturation, fertilization, and preimplantation embryo development rates. We also demonstrate that 0.6 mg/mL LC is the most beneficial concentration to be used. It resulted in significantly higher maturation, fertilization, and embryo developmental rates than the control and other LC concentrations. These outcomes are essential for refining the IVM conditions that can advance the efficiency of assisted reproductive technologies (ARTs) in dogs. Abstract This study aimed to investigate the effect of L-Carnitine (LC) supplementation during in vitro maturation (IVM) of canine oocytes on nuclear maturation, fertilization status, and preimplantation development. Cumulus–oocyte complexes (COCs) collected from the ovaries of ovariohysterectomized female dogs were matured in vitro for 72 h in a TCM-199 medium supplemented with (0.1, 0.3, 0.6, 1.0, or 2.0 mg/mL) or without (0.0 mg/mL) LC. Matured oocytes were fertilized in vitro with frozen–thawed spermatozoa, and zygotes were cultured in a SOF medium for 7 days. IVM rates were higher (p ≤ 0.05) in 0.3 and 0.6 mg/mL LC supplemented groups than in the control (0.0 mg/mL LC) and other LC groups. Fertilization (18 h postinsemination (pi)) and cleavage (2–16-cell stage at day 3 pi) rates were higher (p ≤ 0.05) in the 0.6 mg/mL LC group than in the control and 0.1, 1.0, and 2 mg/mL LC supplemented groups. Interestingly, 4.5% of fertilized oocytes developed to morula (day 5 pi) in the 0.6 mg/mL LC group, which was higher (p ≤ 0.05) than those developed in the 0.3 mg/mL group (1.0%). No cleaved embryos developed to morula in other groups. In conclusion, LC supplementation at 0.6 mg/mL during IVM of canine oocytes improved their maturation, fertilization, and preimplantation embryo development rates following IVF and in vitro culture (IVC).
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Improvement of the developmental competence of canine oocyte using caffeine supplementation during IVM at different maturation time. ZYGOTE 2018; 26:162-167. [DOI: 10.1017/s0967199418000059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
SummaryThe aim of the current study was to investigate the effect of caffeine supplementation during in vitro maturation (IVM) for different maturation times on the developmental potential of canine oocytes recovered from ovariohysterectomized bitches. The recovered cumulus–oocytes complexes were in vitro matured for 72 h. Here, 10 mM caffeine was added to the maturation medium for different incubation times (caffeine from 0–72 h maturation, caffeine for the first 24 h of maturation only, caffeine addition from 24 to 48 h maturation time, caffeine addition from 48 to 72 h maturation or in caffeine-free medium, control group). The matured oocytes were in vitro fertilized using frozen–thawed spermatozoa. The presumptive zygotes were in vitro cultured in synthetic oviductal fluid medium for 5 days. The results showed that both maturation and fertilization rates were significantly higher (P ˂ 0.05) using caffeine-treated medium for the first 24 h of maturation compared with the control and other two groups of caffeine treatment (from 24 to 48 h and from 48 to 72 h), whereas use of caffeine-treated medium for a 0–72 h incubation time did not affect these rates (P > 0.05). Interestingly, the matured oocytes in caffeine-supplemented medium for the first 24 h or from 0–72 h showed a significant (P ˂ 0.05) increase in the total number of cleaved embryos compared with the control group. In conclusion, supplementation of the maturation medium with 10 mM caffeine for the first 24 h of maturation or during the whole maturation time (0–72 h) improved nuclear maturation and subsequent embryo development preimplantation following in vitro fertilization.
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Lange-Consiglio A, Perrini C, Albini G, Modina S, Lodde V, Orsini E, Esposti P, Cremonesi F. Oviductal microvesicles and their effect on in vitro maturation of canine oocytes. Reproduction 2018; 154:167-180. [PMID: 28652254 DOI: 10.1530/rep-17-0117] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 04/27/2017] [Accepted: 05/30/2017] [Indexed: 01/09/2023]
Abstract
The effect of conditioned medium (CM) or microvesicles (MVs), secreted by multicellular spheroids of oviductal cells, and the involvement of some microRNAs (miRNAs) were investigated in canine oocyte maturation. To generate CM, spheroids were cultured for 3 days. MVs were obtained by ultracentrifugation of CM at 100,000 g and measured for size and concentration by NanoSight instrument. Cumulus-oocyte complexes (COCs) were matured at 38.5°C with 5% CO2 and 5% of O2 in synthetic oviductal fluid (SOF) in biphasic systems: for 24 h, with 5.0 μg/mL of LH and for other 48 h with 10% oestrous bitch serum. SOF was used as control (CTR) or supplemented with 10% CM or 25-50-75-100-150 × 106 MVs/mL labeled with PKH-26. Results show that multicellular aggregates secreted shedding vesicles. By fluorescence microscopy, the incorporation of labeled MVs was visible only at 72 h in oocyte cytoplasm. These MVs had a positive effect (P < 0.05) on maturation rate (MII) at the concentration of 75 and 100 × 106 MVs/mL compared to CM and CTR (20.34% and 21.82% vs 9.09% and 8.66% respectively). The concentration of 150 × 106 MVs/mL provided only 9.26% of MII. The expression of three specific miRNAs (miR-30b, miR-375 and miR-503) was studied. The lower rate of MII with the higher concentration of MVs is possibly due to the high level of miR-375. In conclusion, the oviductal MVs could be involved in cellular trafficking during oocyte maturation and their possible use in vitro could facilitate the exploitment of canine reproductive biotechnologies.
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Affiliation(s)
- Anna Lange-Consiglio
- Reproduction UnitCentro Clinico-Veterinario e Zootecnico-Sperimentale di Ateneo, Università degli Studi di Milano, Lodi, Italy
| | - Claudia Perrini
- Department of Veterinary MedicineUniversità Degli Studi di Milano, Milano, Italy
| | - Giulia Albini
- Department of Veterinary MedicineUniversità Degli Studi di Milano, Milano, Italy
| | - Silvia Modina
- Department of HealthAnimal Science and Food Safety, Università Degli Studi di Milano, Milano, Italy
| | - Valentina Lodde
- Department of HealthAnimal Science and Food Safety, Università Degli Studi di Milano, Milano, Italy
| | - Eleonora Orsini
- Department of Veterinary MedicineUniversità Degli Studi di Milano, Milano, Italy
| | - Paola Esposti
- Department of Veterinary MedicineUniversità Degli Studi di Milano, Milano, Italy
| | - Fausto Cremonesi
- Reproduction UnitCentro Clinico-Veterinario e Zootecnico-Sperimentale di Ateneo, Università degli Studi di Milano, Lodi, Italy.,Department of Veterinary MedicineUniversità Degli Studi di Milano, Milano, Italy
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Sato A, Sarentonglaga B, Ogata K, Yamaguchi M, Hara A, Atchalalt K, Sugane N, Fukumori R, Nagao Y. Effects of insulin-like growth factor-1 on the in vitro maturation of canine oocytes. J Reprod Dev 2017; 64:83-88. [PMID: 29212962 PMCID: PMC5830362 DOI: 10.1262/jrd.2017-145] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The maturation rate of canine oocytes during in vitro maturation (IVM) needs to be improved. The present study was designed to evaluate the effects of insulin-like growth factor-1 (IGF-1) on the IVM of canine oocytes. Ovaries were obtained by ovariohysterectomy and were sliced to release cumulus-oocyte complexes (COCs). In Experiment 1, the effects of different concentrations of IGF-1 on the nuclear maturation of oocytes was investigated. The COCs were cultured in a modified medium (mTCM199) with IGF-1 (0, 0.5, 5, 10, and 50 µg/ml). At the end of the 48 h culture, oocytes were fixed and stained to evaluate their nuclear stage. Supplementation with 50 µg/ml IGF-1 induced a significantly higher metaphase II (MII) rate (P < 0.05) compared to the 0 and 0.5 μg/ml IGF-1 groups. In Experiment 2, the expression levels of insulin receptor (INSR), IGF-1 receptor (IGF-1R), and IGF-2 receptor (IGF-2R) genes, localized to canine oocytes and cumulus cells, were investigated before and after IVM. The expression level of IGF-1R in cumulus cells after IVM was higher than that before IVM (P < 0.05). In Experiment 3, it was investigated whether an inhibitor of PTEN (phosphatase and tensin homolog), bpV, affects the nuclear maturation of oocytes. Regardless of bpV supplementation at a concentration of 0.2 to 200 µmol/l, there was no significant difference in the proportion of oocytes that reached the MII stage. These results indicated that IGF-1 has a favorable effect on the IVM of canine oocytes, possibly through the stimulation of the Ras/MAPK pathway via IGF-1R expressed in cumulus cells.
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Affiliation(s)
- Akane Sato
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
| | | | - Kazuko Ogata
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Present: National Livestock Breeding Center, Fukushima 961-8061, Japan
| | - Mio Yamaguchi
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Present: Local Independent Administrative Agency Hokkaido Research Organization, Hokkaido 081-0038, Japan
| | - Asuka Hara
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
| | - Khurchabiling Atchalalt
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
| | - Naoko Sugane
- East Japan Guide Dog Association, Tochigi 321-0342, Japan
| | - Rika Fukumori
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Present: Rakuno Gakuen University, Hokkaido 069-0836, Japan
| | - Yoshikazu Nagao
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
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Wee1B depletion promotes nuclear maturation of canine oocytes. Theriogenology 2015; 83:546-52. [DOI: 10.1016/j.theriogenology.2014.10.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 10/13/2014] [Accepted: 10/18/2014] [Indexed: 11/17/2022]
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Wang X, Tsai T, Qiao J, Zhang Z, Feng HL. Impact of gonadotropins on oocyte maturation, fertilisation and developmental competence in vitro. Reprod Fertil Dev 2015; 26:752-7. [PMID: 23726536 DOI: 10.1071/rd13024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Accepted: 05/02/2013] [Indexed: 11/23/2022] Open
Abstract
The aim of the present study was to evaluate the dose-dependent effects of gonadotropins, either singly (Bravelle (B), Luveris (L), Menupur (M), Repronex (R), Gonal-F (G), Follism (F) and Norvarel (N)) or in combination (Menupur+Bravelle; Repronext+Bravelle; and Bravelle+Norvarel), on rates of oocyte maturation, fertilisation and early embryo development in vitro in an animal model. Bovine cumulus-oocyte complexes (COCs) were purchased commercially and cultured in TCM-199 with 10% fetal bovine serum supplemented with varying concentrations of gonadotropin (0, 5, 10, 20, 40IU or United States Pharmacopoeia (USP) mL-1) for 24 and 48h according to current IVF clinical stimulation protocols. All gonadotropins enhanced oocyte maturation in vitro in a dose-dependent manner. Individually, Gonal-F (Merck KGaA, Darmstadt, Germany), Follism (Merck Co, Whitehouse Station, NJ, USA) and Repronext (Ferring, Parsippany, NJ, USA) promoted oocyte maturation; in combination, they effectively enhanced COC expansion and increased the maturation competence of MII oocytes. However, high concentrations of gonadotropins may result in maturation arrest. Specific combinations of gonadotropins may change the rate of early embryonic development (8-16-cells) and morula-blastocyst formation. These data provide support for the responsiveness of bovine oocytes to gonadotropins in vitro and the need to consider variations in the relative concentrations and ratio of combinations (FSH/LH or human chorionic gonadotropin) for optimisation of oocyte developmental competence. The results of the present study could be applied to therapeutic clinical stimulation protocols and help improve IVF success rates.
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Affiliation(s)
- Xuemei Wang
- Department of Obstetrics and Gynecology, New York Hospital Queens, Weill Medical College of Cornell University, New York, NY 11355, USA
| | - Tony Tsai
- Department of Obstetrics and Gynecology, New York Hospital Queens, Weill Medical College of Cornell University, New York, NY 11355, USA
| | - Jie Qiao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100083, China
| | - Zhan Zhang
- Reproductive Medical Center, The Third Affiliated Hospital of Zhengzhou University, Henan, Zhengzhou , 450052, China
| | - Huai L Feng
- Department of Obstetrics and Gynecology, New York Hospital Queens, Weill Medical College of Cornell University, New York, NY 11355, USA
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Prentice-Biensch J, Singh J, Alfoteisy B, Anzar M. A simple and high-throughput method to assess maturation status of bovine oocytes: Comparison of anti-lamin A/C-DAPI with an aceto-orcein staining technique. Theriogenology 2012; 78:1633-8. [DOI: 10.1016/j.theriogenology.2012.07.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 07/10/2012] [Accepted: 07/10/2012] [Indexed: 10/27/2022]
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The expression of genes encoding zona pellucida glycoproteins in canine cumulus-oocyte complexes cultured in vitro in media supplemented with progesterone and estradiol. Theriogenology 2012; 77:684-93. [DOI: 10.1016/j.theriogenology.2011.09.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2011] [Revised: 09/06/2011] [Accepted: 09/07/2011] [Indexed: 11/17/2022]
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Liang S, Kang J, Jin H, Liu X, Li J, Li S, Lu Y, Wang W, Yin XJ. The influence of 9-cis-retinoic acid on nuclear and cytoplasmic maturation and gene expression in canine oocytes during in vitro maturation. Theriogenology 2012; 77:1198-205. [PMID: 22225683 DOI: 10.1016/j.theriogenology.2011.10.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 10/18/2011] [Accepted: 10/20/2011] [Indexed: 02/04/2023]
Abstract
Retinoids have important roles in regulation of oocyte nuclear and cytoplasmic maturation. The present study investigated the effects of a retinoid metabolite on nuclear maturation, cytoplasmic maturation, and gene expression in canine oocytes during in vitro maturation (IVM). Cumulus-oocyte complexes (COCs) were harvested from ovaries by slicing. Only oocytes that were >120 μm in diameter, with a homogeneous dark cytoplasm and three or more layers of compact cumulus cells were used. Varying concentrations of 9-cis retinoic acid (9-cis-RA; 0, 5, 50, and 500 nm) were included in the maturation medium, and the following were measured: (i) oocyte nuclear maturation after culture for 48 h; (ii) cytoplasmic granular migration by labeling of oocytes with fluorescein isothiocyanate labeled lectins; and (iii) relative expression of genes related to apoptosis (BAX and BclII) in cumulus cells detached from oocytes, by semiquantitative reverse transcriptase-polymerase chain reaction. After 48 h culture with IVM, the highest percentage of oocytes that had developed to the metaphase II (MII) stage were in the 5 nm 9-cis-RA treatment group (18.3 ± 2.5%; P < 0.05). Complete granular migration was observed in oocytes matured with 5 nm 9-cis-RA, consistent with a commensurate gain in developmental competence. Treatment with 5 nm 9-cis-RA had no effect on BclII gene expression, but downregulated BAX expression. In conclusion, since 5 nm 9-cis-RA was beneficial to nuclear and cytoplasmic maturation of canine oocytes, we inferred an important role for 9-cis-RA during IVM.
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Affiliation(s)
- Shuang Liang
- Department of Animal Science, College of Agriculture, Yanbian University, Yanji, 133000, China
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Songsasen N, Wesselowski S, Carpenter JW, Wildt DE. The ability to achieve meiotic maturation in the dog oocyte is linked to glycolysis and glutamine oxidation. Mol Reprod Dev 2011; 79:186-96. [PMID: 22213348 DOI: 10.1002/mrd.22011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Accepted: 11/22/2011] [Indexed: 01/01/2023]
Abstract
We tested the hypothesis that meiotic competence of dog oocytes is tightly linked with donor follicle size and energy metabolism. Oocytes were recovered from small (<1 mm diameter, n = 327), medium (1-<2 mm, n = 292) or large (≥2 mm, n = 102) follicles, cultured for 0, 24, or 48 hr, and then assessed for glycolysis, glucose oxidation, pyruvate uptake, glutamine oxidation, and nuclear status. More oocytes (P < 0.05) from large follicles (37%) reached the metaphase-II (MII) stage than from the small group (11%), with the medium-sized class being intermediate (18%; P > 0.05). Glycolytic rate increased (P < 0.05) as oocytes progressed from the germinal vesicle (GV) to MII stage. After 48 hr of culture, oocytes completing nuclear maturation had higher (P < 0.05) glycolytic rates than those arrested at earlier stages. GV oocytes recovered from large follicle oocytes had higher (P < 0.05) metabolism than those from smaller counterparts at culture onset. MII oocytes from large follicles oxidized more (P < 0.05) glutamine than the same stage gametes recovered from smaller counterparts. In summary, larger-sized dog follicles contain a more metabolically active oocyte with a greater chance of achieving nuclear maturation in vitro. These findings demonstrate a significant role for energy metabolism in promoting dog oocyte maturation, information that will be useful for improving culture systems for rescuing intraovarian genetic material.
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Affiliation(s)
- Nucharin Songsasen
- Department of Reproductive Sciences, Center for Species Survival, Smithsonian Conservation Biology Institute, Front Royal, Virginia 22630, USA.
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