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Silva JV, Cordeiro E, Silva B, Paulino LFM, Barroso PA, Barrozo L, de Lima Neto M. Effects of N-acetylcysteine on growth, viability and reactive oxygen species levels in small antral follicles cultured in vitro. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2023. [DOI: 10.4103/2305-0500.365231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Maria da Silva A, Pereira AG, Brasil AV, Macedo LB, Souza-Junior J, Bezerra de Moura CE, Pereira AF, Franco de Oliveira M, Comizzoli P, Silva AR. Influence of freezing techniques and glycerol-based cryoprotectant combinations on the survival of testicular tissues from adult collared peccaries. Theriogenology 2021; 167:111-119. [PMID: 33813051 DOI: 10.1016/j.theriogenology.2021.03.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/16/2021] [Accepted: 03/16/2021] [Indexed: 01/23/2023]
Abstract
The objective of the study was to evaluate the effects of different cryopreservation techniques including glycerol-based cryoprotectant combinations on the structure and viability of testicular tissues from adult collared peccaries. Tissue biopsies (3.0 mm³) from 5 different individuals were allocated to 10 different groups: fresh control; slow freezing (SF), conventional vitrification (CV), or solid-surface vitrification (SSV); each of them using three different combinations of cryoprotectants [dimethyl sulfoxide (DMSO) + ethylene glycol (EG); DMSO + Glycerol; and EG + Glycerol]. After thawing/warming, samples were evaluated for histomorphology, viability, proliferative capacity potential, and DNA integrity. Most effective preservation of testicular histomorphology was achieved using SF and CV with DMSO + EG. However, the use of glycerol-based cryoprotectant combinations increased the occurrence of tubular cell swelling, tubular cell loss and shrinkage from the basal membrane. Cell viability was comparable among cryopreservation methods and cryoprotectant combinations. Regarding cell proliferative capacity, the use of SF with EG + Glycerol and SSV with DMSO + Glycerol impaired the conservation of spermatogonia proliferative potential compared to other treatments. Moreover, CV with DMSO + EG was better than SF with EG + Glycerol for Sertoli cell proliferation potential. Regarding DNA integrity, less damage occurred when using SF with DMSO + EG while more fragmentations were observed when using CV with EG + Glycerol or DMSO + Glycerol as well as SSV with EG + Glycerol or DMSO + Glycerol. In sum, SF and CV appeared to be the most suitable methods for the cryopreservation of adult peccary testicular tissues. Additionally, the use of glycerol-based cryoprotectant combinations did not improve testicular tissues preservation with DMSO + EG being the most efficient option.
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Affiliation(s)
- Andréia Maria da Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil
| | - Ana Gloria Pereira
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil
| | - Andreza Vieira Brasil
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil
| | | | - João Souza-Junior
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil
| | | | | | | | - Pierre Comizzoli
- Smithsonian Conservation Biology Institute, National Zoological Park, Veterinary Hospital, Washington, DC, USA
| | - Alexandre Rodrigues Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil.
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Praxedes ÉCG, Lima GL, da Silva AM, Campos LB, de Souza CMP, Moreira SSJ, de Oliveira MF, Silva AR. Comparison of different intracellular cryoprotectants on the solid surface vitrification of red-rumped agouti (Dasyprocta Leporina Lichtenstein, 1823) ovarian tissue. Reprod Domest Anim 2019; 55:154-161. [PMID: 31804747 DOI: 10.1111/rda.13600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 11/29/2019] [Indexed: 12/14/2022]
Abstract
In contributing to the conservation of wild rodents, the aim of this study was to evaluate the use of distinct cryoprotectants, separately or in combination, for solid surface vitrification (SSV) of red-rumped agouti ovarian tissue. Ovarian cortex from nine females was recovered and fragmented. Fresh fragments (control) were used to analyse the pre-antral follicle (PF) morphology using a histologic procedure, viability using the Trypan blue test, cell proliferation by counting the argyrophilic nucleolar organizing regions (Ag-NORs technique) and DNA integrity using the TUNEL assay. The remaining fragments were vitrified using SSV method with 3 M or 6 M ethylene glycol (EG) or dimethyl sulfoxide (DMSO), or in combination (3 M EG/3 M DMSO), and further evaluated as reported for the fresh samples. All cryoprotectants were effective at preserving PFs morphology compared to the control group (80.7 ± 5.21%), except 6 M EG and 3 M DMSO that provoked a significant (p < .05) decrease on the values of morphologically normal primary (60.0 ± 19.0%) and primordial (44 ± 4.5%) follicles, respectively. Regarding viability, all cryoprotectants provided values similar to that verified for the control group (79.0%), but a significant decrease (p < .05) was observed with EG/DMSO combination (59%). Using Ag-NORs technique, the highest (p < .05) cell proliferative capacity was detected when using EG at each tested concentration. The TUNEL proved the preservation of DNA integrity regardless of the cryoprotectant. In summary, we suggest the use of 3 M EG for the solid surface vitrification of red-rumped agouti ovarian tissue.
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Affiliation(s)
- Érica Camila G Praxedes
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Brazil
| | - Gabriela L Lima
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Brazil
| | - Andréia M da Silva
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Brazil
| | - Lívia B Campos
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Brazil
| | - Carla Michelle P de Souza
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Brazil
| | - Samara Sandy J Moreira
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Brazil
| | - Moacir F de Oliveira
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Brazil
| | - Alexandre R Silva
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Brazil
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