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Rahimi A, Shahriari A, Barati F. Redox reactions in vitrified-warmed ovary. F&S SCIENCE 2024; 5:39-42. [PMID: 37952929 DOI: 10.1016/j.xfss.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/14/2023]
Abstract
BACKGROUNDS Ovary vitrification is a way for the preservation of fertility in women undergoing chemotherapy and for protecting the valuable or the endangered species. However, cryopreservation of complex tissues, which are composed of different cells and materials, encountered various challenges including oxidative stress damage. OBJECTIVES This study aimed to evaluate some oxidative stress indices in the vitrified bovine ovaries. METHODS The pieces of the bovine ovarian cortex (1 × 1 × 1 mm3) were vitrified with final concentrations of ethylene glycol (25%) and glycerol (25%) and 0.5 M sucrose and then, after 48 h, were warmed with descending concentrations (0.5, 0.25, and 0.125 M) of sucrose. The ovaries were processed and some biochemical indicators of oxidative stresses were assayed. RESULTS Total antioxidant capacity had a 45% decrease after vitrification (P<.0001). This reduction was associated with a 4 times increase in malondialdehyde (P=.0002) and a 53% decrease in superoxide dismutase (P=.0081). The levels of protein carbonyl in vitrified-warmed ovaries were less than in fresh ovaries (P=.0325). Regression analysis showed that the components of oxidative stress indices in vitrified tissues are different from those of fresh tissues. CONCLUSION An extensive alteration was seen in oxidant/antioxidant balance during vitrification.
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Affiliation(s)
- Atefe Rahimi
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Ali Shahriari
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Farid Barati
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran.
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Rodrigues AQ, Silva IM, Goulart JT, Araújo LO, Ribeiro RB, Aguiar BA, Ferreira YB, Silva JKO, Bezerra JLS, Lucci CM, Paulini F. Effects of erythropoietin on ischaemia-reperfusion when administered before and after ovarian tissue transplantation in mice. Reprod Biomed Online 2023; 47:103234. [PMID: 37524029 DOI: 10.1016/j.rbmo.2023.05.006] [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: 01/23/2023] [Revised: 05/04/2023] [Accepted: 05/10/2023] [Indexed: 08/02/2023]
Abstract
RESEARCH QUESTION Is the optimal timing for administering erythropoietin to minimize ischaemic injury in ovarian tissue transplantation before ovary removal for cryopreservation and subsequent transplantation or after transplantation? DESIGN Thirty Swiss mice (nu/nu) were divided into three groups: treatment control group (n = 10); erythropoietin before harvesting group (EPO-BH) (n = 10) and erythropoietin after transplantation group (EPO-AT) (n = 10). Animals underwent bilateral ovariohysterectomy and their hemiovaries were cryopreserved by slow freezing. At the same time, previously cryopreserved hemiovaries were transplanted subcutaneously in the dorsal region. Erythropoietin (250 IU/kg) and sterile 0.9% saline solution were administered every 12/12 h over 5 consecutive days in the EPO-AT and EPO-BH groups, respectively. RESULTS Administration of erythropoietin in the EPO-AT group improved the viability of ovarian follicles, reducing degeneration and increasing the number of morphologically normal growing follicles at 14 days after transplantation compared with the EPO-BH group (P = 0.002). This group also showed higher percentages of proliferative follicles at 7 days after transplantation (P ≤ 0.03), increased blood vessel count (P ≤ 0.03) and greater tissue area occupied by blood vessels at days 7 and 14 after transplantation (P ≤ 0.03), compared with hormone administration before cryopreservation (EPO-BH group) and the treatment control group. Additionally, treatment with erythropoietin before or after transplantation reduced fibrotic areas at 7 days after transplantation (P = 0.004). CONCLUSION Erythropoietin treatment after transplantation reduced ischaemic damage in transplanted ovarian tissue, increased angiogenesis, maintenance of ovarian follicle proliferation and reduced fibrosis areas in the grafted tissue.
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Affiliation(s)
- Aline Q Rodrigues
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Isabella Mg Silva
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Jair T Goulart
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Luane O Araújo
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Rayane B Ribeiro
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Beatriz A Aguiar
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Yasmin B Ferreira
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Jessyca Karoline O Silva
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Julliene Larissa S Bezerra
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Carolina M Lucci
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil
| | - Fernanda Paulini
- University of Brasilia, Institute of Biological Sciences, Department of Physiological Sciences, Brasilia-DF, 70910-900, Brazil.
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Rodrigues AQ, Picolo VL, Goulart JT, Silva IMG, Ribeiro RB, Aguiar BA, Ferreira YB, Oliveira DM, Lucci CM, de Bem AF, Paulini F. Metabolic activity in cryopreserved and grafted ovarian tissue using high-resolution respirometry. Sci Rep 2021; 11:21517. [PMID: 34728762 PMCID: PMC8563867 DOI: 10.1038/s41598-021-01082-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 10/19/2021] [Indexed: 11/09/2022] Open
Abstract
Cryopreservation of ovarian tissue followed by transplantation represents a strategy to restore ovarian function and fertility. Stress from cryopreservation-thawing processes can lead to alterations and/or damage to mitochondrial structure and functionality. High resolution respirometry and histological analysis were used to evaluate the effect of cryopreservation and transplantation on ovarian tissue. Four different conditions were performed: Fresh non-transplanted tissue, Fresh transplanted tissue, Cryopreserved non-transplanted tissue and Cryopreserved transplanted tissue. All groups were able to respond to the substrates-uncoupler-inhibitor protocol. We found a dramatic decrease in general oxygen consumption in hemi-ovaries submitted to cryopreservation and/or transplantation. The effect of cryopreservation on mitochondrial metabolism was less intense than effect of transplantation, since the transplantation affected all of the mitochondrial states. A total of 2644 follicles were analyzed. Of these, 2198 were classified as morphologically normal. The percentage of morphologically normal follicles was significantly lower in the Cryopreserved transplanted group when compared to the Cryopreserved non-transplanted group and the Fresh transplanted group (p-value < 0.05). Despite decreased follicular viability and mitochondrial activity, the cryopreservation followed by transplantation of ovarian tissue proved feasible for attempts to restore ovarian function.
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Affiliation(s)
- Aline Q Rodrigues
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Victor L Picolo
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Jair T Goulart
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Isabella M G Silva
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Rayane B Ribeiro
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Beatriz A Aguiar
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Yasmin B Ferreira
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Daniela M Oliveira
- Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília, Brasília, 70910-900, Brazil
| | - Carolina M Lucci
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Andreza F de Bem
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Fernanda Paulini
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, DF, 70910-900, Brazil.
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Interference of fixatives and fixation period on the morphologic analysis of ovarian preantral follicles. ZYGOTE 2021; 30:144-147. [PMID: 33988116 DOI: 10.1017/s0967199421000198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Ovine ovarian fragments (3 × 3 × 1 mm) were fixed in neutral buffered formalin (NBF), Carnoy's solution (CAR), Davidson's solution (DAV), or paraformaldehyde (PFA) for 12 h or 24 h. After this fixation time, each fragment was prepared for histological analysis. Although fixative and fixation period did not affect follicular and stromal cells density, the percentages of morphologically normal primordial and primary follicles was affected by the fixative type and period of fixation. Paraformaldehyde was not indicated as a fixative for ovarian fragments. Formalin was a suitable fixative only when the period of fixation was 12 h, while Carnoy was efficient after a fixation period of 24 h. In conclusion, the most indicated fixative for the morphological evaluation of ovarian preantral follicles was DAV, regardless of the fixation period, that is 12 or 24 h.
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