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Daddangadi A, Uppangala S, Kabekkodu SP, Khan G N, Kalthur G, Talevi R, Adiga SK. Advanced Maternal Age Affects the Cryosusceptibility of Ovulated but not In Vitro Matured Mouse Oocytes. Reprod Sci 2024:10.1007/s43032-024-01462-6. [PMID: 38294668 DOI: 10.1007/s43032-024-01462-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/12/2024] [Indexed: 02/01/2024]
Abstract
Oocyte cryopreservation is offered to women of various age groups for both health and social reasons. Oocytes derived from either controlled ovarian stimulation or in vitro maturation (IVM) are cryopreserved via vitrification. As maternal age is a significant determinant of oocyte quality, there is limited data on the age-related susceptibility of oocytes to the vitrification-warming procedure alone or in conjunction with IVM. In the present study, metaphase II oocytes obtained from 2, 6, 9, and 12 month old Swiss albino mice either by superovulation or IVM were used. To understand the association between maternal age and oocyte cryotolerance, oocytes were subjected to vitrification-warming and compared to non vitrified sibling oocytes. Survived oocytes were evaluated for mitochondrial potential, spindle integrity, relative expression of spindle checkpoint protein transcripts, and DNA double-strand breaks. Maturation potential and vitrification-warming survival were significantly affected (p < 0.001 and p < 0.05, respectively) in ovulated oocytes from the advanced age group but not in IVM oocytes. Although vitrification-warming significantly increased spindle abnormalities in ovulated oocytes from advanced maternal age (p < 0.01), no significant changes were observed in IVM oocytes. Furthermore, Bub1 and Mad2 transcript levels were significantly higher in vitrified-warmed IVM oocytes (p < 0.05). In conclusion, advanced maternal age can have a negative impact on the cryosusceptibility of ovulated oocytes but not IVM oocytes in mice.
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Affiliation(s)
- Akshatha Daddangadi
- Centre of Excellence in Clinical Embryology, Department of Reproductive Science, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Shubhashree Uppangala
- Division of Reproductive Genetics, Department of Reproductive Science, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Shama Prasada Kabekkodu
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Nadeem Khan G
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Guruprasad Kalthur
- Division of Reproductive Biology, Department of Reproductive Science, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Riccardo Talevi
- Dipartimento Di Biologia, Università Di Napoli "Federico II", Complesso Universitario Di Monte S Angelo, Naples, Italy
| | - Satish Kumar Adiga
- Centre of Excellence in Clinical Embryology, Department of Reproductive Science, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576 104, India.
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Predheepan D, Daddangadi A, Uppangala S, Laxminarayana SLK, Raval K, Kalthur G, Kovačič B, Adiga SK. Experimentally Induced Hyperglycemia in Prepubertal Phase Impairs Oocyte Quality and Functionality in Adult Mice. Endocrinology 2022; 163:6653492. [PMID: 35917567 DOI: 10.1210/endocr/bqac121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Indexed: 11/19/2022]
Abstract
Reproductive abnormalities in women with a history of childhood diabetes are believed to be partially attributed to hyperglycemia. Prolonged hyperglycemia can negatively affect ovarian function and fertility during reproductive life. To address this in an experimental setting, the present study used streptozotocin-induced hyperglycemic prepubertal mouse model. The impact of prolonged hyperglycemic exposure during prepubertal life on ovarian function, oocyte quality, and functional competence was assessed in adult mice. The ovarian reserve was not significantly altered; however, the in vitro maturation potential (P < 0.001), mitochondrial integrity (P < 0.01), and meiotic spindle assembly (P < 0.05-0.001) in oocytes were significantly affected in hyperglycemic animals in comparison to control groups. The results from the study suggest that prepubertal hyperglycemia can have adverse effects on the oocyte functional competence and spindle integrity during the reproductive phase of life. Because these changes can have a significant impact on the genetic integrity and developmental potential of the embryos and fetus, the observation warrants further research both in experimental and clinical settings.
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Affiliation(s)
- Dhakshanya Predheepan
- Division of Clinical Embryology, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal 576104, India
| | - Akshatha Daddangadi
- Division of Clinical Embryology, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal 576104, India
| | - Shubhashree Uppangala
- Division of Reproductive Genetics, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal 576104, India
| | | | - Keyur Raval
- D epartment of Chemical Engineering, National Institute of Technology Karnataka Surathkal 575025, India
| | - Guruprasad Kalthur
- Division of Reproductive Biology, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal 576104, India
| | - Borut Kovačič
- Laboratory of Reproductive Biology, Department of Reproductive Medicine and Endocrinology, University Medical Centre, Maribor 2000, Slovenia
| | - Satish Kumar Adiga
- Division of Clinical Embryology, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal 576104, India
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Uppangala S, Daddangadi A, Joseph JS, Salian SR, Pandya RK, Kalthur G, Adiga SK. Stage-specific response in early mouse embryos exposed to prednisolone in vitro. J Endocrinol 2021; 248:237-247. [PMID: 33289686 DOI: 10.1530/joe-20-0382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 12/02/2020] [Indexed: 11/08/2022]
Abstract
Corticosteroids are increasingly being used during the peri-implantation period to treat women with repeated IVF failure and recurrent miscarriage. However, the direct effects of prednisolone (PRDL), one of the commonly used corticosteroids on early embryo development is not understood. To mimic the possible clinical scenario and to understand the embryonic response to direct PRDL exposure, this pilot study was conducted in a mouse model. Cleavage stage embryos exposed to 3 and 30 µM PRDL in vitro were assessed for peri-implantation developmental potential, genetic integrity, inner cell mass (ICM) proliferation and pluripotency markers in the proliferated ICM cells. Exposure to 30 µM PRDL delayed the embryonic progression beyond compaction (P < 0.05) in comparison to vehicle control and, had reduced total cell number (P < 0.001) than all other groups. In addition, 30 µM PRDL exposure resulted in poor hatching potential (P < 0.05) and increased apoptosis in blastocysts (P < 0.05) compared to 3 µM PRDL. On the other hand, completely formed ICM outgrowths were significantly higher (P < 0.05) in 3 µM PRDL compared to control. However, no significant differences were observed in the expression of pluripotency genes. In conclusion, the trend observed in embryos exposed to PRDL in vitro provides important information concerning the use of this drug when treating patients at the peri-implantation phase of IVF cycles. However, the clinical value of this observation on human embryo development needs further research.
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Affiliation(s)
- Shubhashree Uppangala
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Akshatha Daddangadi
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Jeena Susan Joseph
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Sujit Raj Salian
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Riddhi Kirit Pandya
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Guruprasad Kalthur
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Satish Kumar Adiga
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
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Daddangadi A, Uppangala S, Kalthur G, Talevi R, Adiga SK. Germinal stage vitrification is superior to MII stage vitrification in prepubertal mouse oocytes. Cryobiology 2020; 93:49-55. [PMID: 32112808 DOI: 10.1016/j.cryobiol.2020.02.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 01/17/2023]
Abstract
This study investigated if in vitro maturation (IVM) before or after vitrification would be more successful for prepubertal oocytes. To mimic prepubertal conditions in an experimental setup, oocytes were collected from healthy 14, 21 and 28day old Swiss albino mice. The germinal vesicle (GV) stage oocytes and in vitro matured MII oocytes were subjected to vitrification-warming. Both structural (meiotic spindle morphology, mitochondrial integrity, cortical granules) and functional (sperm zona binding, fertilization) characteristics were assessed in oocytes after warming. This study demonstrated that IVM was more detrimental to prepubertal oocytes than to young adults. Further, vitrification of the IVM oocytes resulted in an increase in the number of abnormal meiotic spindles, a change in the cortical distribution pattern, a reduction in sperm zona binding and the fertilization rate. Importantly, oocyte integrity was better when prepubertal oocytes were vitrified before, rather than after, IVM. The above observations support GV stage vitrification for prepubertal oocytes requiring fertility preservation. Understanding the mechanisms behind the differing outcomes for oocytes from immature females will help in refining current protocol, thereby retaining the oocytes' maximum structural and functional integrity Further investigation is necessary to determine whether human prepubertal oocytes also behave in a similar way. It is to be noted here, with great emphasis, that a major limitation of this study is that the oocytes' abilities were tested only until fertilisation, as a consequence of which the study cannot reveal the developmental potentials of the embryos beyond fertilisation.
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Affiliation(s)
- Akshatha Daddangadi
- Department of Clinical Embryology, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Shubhashree Uppangala
- Department of Clinical Embryology, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Guruprasad Kalthur
- Department of Clinical Embryology, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Riccardo Talevi
- Dipartimento di Biologia, Università di Napoli "Federico II", Complesso Universitario di Monte S Angelo, Napoli, Italy
| | - Satish Kumar Adiga
- Department of Clinical Embryology, Kasturba Medical College Manipal, Manipal Academy of Higher Education, Manipal, 576 104, India.
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