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Reduced Glutathione and ATP in the Seminal Cryopreservation of Tambaqui.
Cryo Letters 2018 November
BACKGROUND: The aim of this study was to analyze the effect of reduced glutathione (GR) and adenosine triphosphate (ATP) in cryopreserved sperm tambaqui, Colossoma macropomum..
OBJECTIVE: Semen samples were frozen at different concentrations of GR (2, 4, and 6 mM) and ATP (7.5, 15, 30 mM) evaluated separately.
MATERIALS AND METHODS: Different concentrations of GR and ATP were added to the diluent Beltsville Thawing Solution 10 % of DMSO (extender control). The thawed sperm was evaluated as the kinetic parameters for Computer Assisted Semen Analysis (CASA) and cell feature parameters by flow cytometry.
RESULTS: All concentrations of GR and ATP had gradual reduction in the production of reactive oxygen species, mainly ATP 15; 22.5 mM and 30 mM, which decreased by 50% or more when compared to the control. All concentrations of GR and ATP did not change (P> 0.05) DNA fragmentation and lipid peroxidation. The membrane fluidity GR in concentrations 4 and 6 mM were better than control; and the concentrations of 2 and 4 mM maintained more efficiently to motility period, total and progressive motility.
CONCLUSION: Thus, it is indicated the use of BTS extender with 10% DMSO added 4 mM GR thawed sperm Tambaqui C. macropomum.
OBJECTIVE: Semen samples were frozen at different concentrations of GR (2, 4, and 6 mM) and ATP (7.5, 15, 30 mM) evaluated separately.
MATERIALS AND METHODS: Different concentrations of GR and ATP were added to the diluent Beltsville Thawing Solution 10 % of DMSO (extender control). The thawed sperm was evaluated as the kinetic parameters for Computer Assisted Semen Analysis (CASA) and cell feature parameters by flow cytometry.
RESULTS: All concentrations of GR and ATP had gradual reduction in the production of reactive oxygen species, mainly ATP 15; 22.5 mM and 30 mM, which decreased by 50% or more when compared to the control. All concentrations of GR and ATP did not change (P> 0.05) DNA fragmentation and lipid peroxidation. The membrane fluidity GR in concentrations 4 and 6 mM were better than control; and the concentrations of 2 and 4 mM maintained more efficiently to motility period, total and progressive motility.
CONCLUSION: Thus, it is indicated the use of BTS extender with 10% DMSO added 4 mM GR thawed sperm Tambaqui C. macropomum.
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