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Denisenko V, Chistyakova I, Volkova N, Volkova L, Iolchiev B, Kuzmina T. The Modulation of Functional Status of Bovine Spermatozoa by Progesterone. Animals (Basel) 2021; 11:ani11061788. [PMID: 34203892 PMCID: PMC8232648 DOI: 10.3390/ani11061788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/10/2021] [Accepted: 06/10/2021] [Indexed: 12/18/2022] Open
Abstract
Simple Summary Progesterone is an endogenous steroid hormone, which can induce capacitation and/or acrosome reactions in semen of certain mammalian species. Our study aimed to investigate the effect of progesterone on the functional status of fresh bovine spermatozoa using a chlortetracycline fluorescent probe. Results showed that heparin induced capacitation in spermatozoa incubated with or without progesterone. The destruction of microfilaments by an inhibitor of cytochalasin D blocked the stimulating effect of heparin. Steroid hormone in mixture with prolactin stimulated the acrosome reaction in spermatozoa, which was blocked by an inhibitor of microtubule polymerization (nocodazole). At the acrosome stage, prolactin provided the undergoing of acrosome reaction in male gametes. This effect was noted both in the presence and absence of progesterone and inhibited by nocodazole. The supplementation of dibutyryl cyclic adenosine monophosphate during the acrosome reaction to progesterone-untreated spermatozoa did not cause changes in proportion of acrosome-reacted cells. However, when progesterone was added during capacitation, a significant increase in the proportion of capacitated cells was noted, which was inhibited by nocodazole. Thus, progesterone under the action of prolactin and dibutyryl cyclic adenosine monophosphate determines the functional status of fresh spermatozoa, which indicates progesterone-modulating effect on the indicators of post-ejaculatory maturation of male gametes. Abstract The aim of this study is to identify the effects of progesterone (PRG) on the capacitation and the acrosome reaction in bovine spermatozoa. The fresh sperm samples were incubated with and without capacitation inductors (heparin, dibutyryl cyclic adenosine monophosphate (dbcAMP)), hormones (prolactin (PRL), PRG), inhibitors of microfilaments (cytochalasin D) and microtubules (nocodazole) during capacitation and acrosome reactions. The functional status of spermatozoa was examined using the chlortetracycline assay. Supplementation of heparin stimulated capacitation in the presence and absence of PRG. Cytochalasin D blocked the stimulating effect of heparin on capacitation. The addition of PRL during capacitation (without PRG) did not affect the functional status of spermatozoa, while in PRG-treated cells PRL stimulated the acrosome reaction. PRL (with and without PRG) increased the acrosome reaction in capacitated cells. These PRL-dependent effects were inhibited by nocodazole. During the acrosome reaction, in presence of dbcAMP, PRG decreased the proportion of acrosome-reacted cells compared to PRG-untreated cells. This effect in PRG-treated cells was canceled in the presence of nocodazole. In conclusion, PRG under the action of PRL and dbcAMP determines the changes in the functional status of native sperm cells, which indicates PRG modulating effect on the indicators of post-ejaculatory maturation of spermatozoa.
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Affiliation(s)
- Vitaly Denisenko
- Branch of Federal Research Center for Animal Husbandry Named after Academy Member L.K. Ernst, Russian Research Institute of Genetic and Breeding Farm Animals, 196601 Saint-Petersburg, Russia; (V.D.); (I.C.)
| | - Irena Chistyakova
- Branch of Federal Research Center for Animal Husbandry Named after Academy Member L.K. Ernst, Russian Research Institute of Genetic and Breeding Farm Animals, 196601 Saint-Petersburg, Russia; (V.D.); (I.C.)
| | - Natalia Volkova
- Federal Research Center for Animal Husbandry Named after Academy Member L.K. Ernst, 142132 Moscow, Russia; (N.V.); (L.V.); (B.I.)
| | - Ludmila Volkova
- Federal Research Center for Animal Husbandry Named after Academy Member L.K. Ernst, 142132 Moscow, Russia; (N.V.); (L.V.); (B.I.)
| | - Baylar Iolchiev
- Federal Research Center for Animal Husbandry Named after Academy Member L.K. Ernst, 142132 Moscow, Russia; (N.V.); (L.V.); (B.I.)
| | - Tatyana Kuzmina
- Branch of Federal Research Center for Animal Husbandry Named after Academy Member L.K. Ernst, Russian Research Institute of Genetic and Breeding Farm Animals, 196601 Saint-Petersburg, Russia; (V.D.); (I.C.)
- Correspondence: ; Tel.: +7-9213-92-19-47
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Tessaro I, Modina SC, Crotti G, Franciosi F, Colleoni S, Lodde V, Galli C, Lazzari G, Luciano AM. Transferability and inter-laboratory variability assessment of the in vitro bovine oocyte fertilization test. Reprod Toxicol 2015; 51:106-13. [PMID: 25625651 DOI: 10.1016/j.reprotox.2015.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 12/16/2014] [Accepted: 01/06/2015] [Indexed: 11/28/2022]
Abstract
The dramatic increase in the number of animals required for reproductive toxicity testing imposes the validation of alternative methods to reduce the use of laboratory animals. As we previously demonstrated for in vitro maturation test of bovine oocytes, the present study describes the transferability assessment and the inter-laboratory variability of an in vitro test able to identify chemical effects during the process of bovine oocyte fertilization. Eight chemicals with well-known toxic properties (benzo[a]pyrene, busulfan, cadmium chloride, cycloheximide, diethylstilbestrol, ketoconazole, methylacetoacetate, mifepristone/RU-486) were tested in two well-trained laboratories. The statistical analysis demonstrated no differences in the EC50 values for each chemical in within (inter-runs) and in between-laboratory variability of the proposed test. We therefore conclude that the bovine in vitro fertilization test could advance toward the validation process as alternative in vitro method and become part of an integrated testing strategy in order to predict chemical hazards on mammalian fertility.
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Affiliation(s)
- Irene Tessaro
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, University of Milan, 20133 Milan, Italy
| | - Silvia C Modina
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, University of Milan, 20133 Milan, Italy; Interdepartmental Research Centre for the Study of Biological Effects of Nano-Concentrations (CREBION), University of Milan, 20133 Milan, Italy
| | - Gabriella Crotti
- Avantea, Laboratory of Reproductive Technologies, 26100 Cremona, Italy
| | - Federica Franciosi
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, University of Milan, 20133 Milan, Italy
| | - Silvia Colleoni
- Avantea, Laboratory of Reproductive Technologies, 26100 Cremona, Italy
| | - Valentina Lodde
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, University of Milan, 20133 Milan, Italy
| | - Cesare Galli
- Avantea, Laboratory of Reproductive Technologies, 26100 Cremona, Italy; Dipartimento di Scienze Mediche Veterinarie, Università di Bologna, 40064 Bologna, Italy; Fondazione Avantea, Cremona, Italy
| | - Giovanna Lazzari
- Avantea, Laboratory of Reproductive Technologies, 26100 Cremona, Italy; Fondazione Avantea, Cremona, Italy
| | - Alberto M Luciano
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, University of Milan, 20133 Milan, Italy; Interdepartmental Research Centre for the Study of Biological Effects of Nano-Concentrations (CREBION), University of Milan, 20133 Milan, Italy.
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