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Althouse GC. Contaminant toxicity of concern for boars and semen used in assisted reproduction programs. Anim Reprod Sci 2024:107519. [PMID: 38897823 DOI: 10.1016/j.anireprosci.2024.107519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024]
Abstract
The commercial swine industry utilizes artificial insemination (AI) in their breeding programs. With this assisted reproductive technology, the process starts by obtaining fresh ejaculates from desirable boars who are housed in a dedicated facility (i.e., stud) that also contains a clean-room laboratory where semen quality is assessed and then ejaculates processed into AI doses. In concert with AI adoption, disruptions in sow herd reproductive performance have been traced back to contributions made from the boar stud. Through field investigations and research, several extrinsic contaminants have been identified that impact semen quality either at the boar or AI-dose level. These contaminants can be categorized as either biological or chemical in origin, eliciting reprotoxic outcomes at the boar level and/or spermatotoxicity at the AI-dose level. Biological contaminants include multiple genera of primarily opportunistic microbes (i.e., bacteria, fungi), along with their secondary metabolites (e.g., endotoxins, exotoxins, mycotoxins). Chemical contaminants appear to originate from products used at the stud, and include cleaning agent/disinfectant residues, leachates from gloves and plastics, semen extender impurities, purified and drinking water impurities, and pesticides (i.e., biocides, fungicides, herbicides, insecticides, wood preservatives). In conclusion, contaminants are a real and constant threat to the health and productivity of a stud, and have caused significant reproductive and economic losses in the swine industry. The knowledge gained in recognizing the types and sources of contaminants provides a solid foundation for the development and implementation of pro-active strategies that mitigate risk to the industry.
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Affiliation(s)
- G C Althouse
- Department of Clinical Studies, University of Pennsylvania, New Bolton Center, 382 West Street Road, Kennett Square, PA 19348, USA.
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2
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Zhao H, Qian H, Cui J, Ge Z, Shi J, Huo Y, Zhang Y, Ye L. Endocrine toxicity of atrazine and its underlying mechanisms. Toxicology 2024; 505:153846. [PMID: 38815618 DOI: 10.1016/j.tox.2024.153846] [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: 04/25/2024] [Revised: 05/20/2024] [Accepted: 05/24/2024] [Indexed: 06/01/2024]
Abstract
Atrazine (ATR) is one of the most widely utilized herbicides globally and is prevalent in the environment due to its extensive use and long half-life. It can infiltrate the human body through drinking water, ingestion, and dermal contact, and has been recognized as an environmental endocrine disruptor. This study aims to comprehensively outline the detrimental impacts of ATR on the endocrine system. Previous research indicates that ATR is harmful to various bodily systems, including the reproductive system, nervous system, adrenal glands, and thyroi d gland. The toxic effects of ATR on the endocrine system and its underlying molecular mechanisms are summarized as follows: influencing the expression of kisspeptin in the HPG axis, consequently affecting steroid synthesis; disrupting DNA synthesis and meiosis, as well as modifying DNA methylation levels, leading to reproductive and developmental toxicity; impacting dopamine by altering Nurr1, VMAT2, and DAT expression, consequently affecting dopamine synthesis and transporter expression, and influencing other neurotransmitters, resulting in neurotoxicity; and changing adipose tissue synthesis and metabolism by reducing basal metabolism, impairing cellular oxidative phosphorylation, and inducing insulin resistance. Additionally, a compilation of natural products used to mitigate the toxic effects of ATR has been provided, encompassing melatonin, curcumin, quercetin, lycopene, flavonoids, vitamin C, vitamin E, and other natural remedies. It is important to note that existing research predominantly relies on in vitro and ex vivo experiments, with limited population-based empirical evidence available.
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Affiliation(s)
- Haotang Zhao
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Honghao Qian
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Jianwei Cui
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Zhili Ge
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Jingjing Shi
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Yingchao Huo
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China
| | - Yuezhu Zhang
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China.
| | - Lin Ye
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, Changchun, China.
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3
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Lazcano-Pérez F, Bermeo K, Castro H, Salazar Campos Z, Arenas I, Zavala-Moreno A, Chávez-Villela SN, Jiménez I, Arreguín-Espinosa R, Fierro R, González-Márquez H, Garcia DE, Sánchez-Rodríguez J. A Sea Anemone Lebrunia neglecta Venom Fraction Decreases Boar Sperm Cells Capacitation: Possible Involvement of HVA Calcium Channels. Toxins (Basel) 2022; 14:toxins14040261. [PMID: 35448870 PMCID: PMC9030620 DOI: 10.3390/toxins14040261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 02/04/2023] Open
Abstract
Sea anemones produce venoms characterized by a complex mixture of low molecular weight compounds, proteins and peptides acting on voltage-gated ion channels. Mammal sperm cells, like neurons, are characterized by their ion channels. Calcium channels seem to be implicated in pivotal roles such as motility and capacitation. In this study, we evaluated the effect of a low molecular weight fraction from the venom of the sea anemone Lebrunia neglecta on boar sperm cells and in HVA calcium channels from rat chromaffin cells. Spermatozoa viability seemed unaffected by the fraction whereas motility and sperm capacitation were notoriously impaired. The sea anemone fraction inhibited the HVA calcium current with partial recovery and no changes in chromaffin cells’ current kinetics and current–voltage relationship. These findings might be relevant to the pharmacological characterization of cnidarian venoms and toxins on voltage-gated calcium channels.
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Affiliation(s)
- Fernando Lazcano-Pérez
- Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Puerto Morelos, Quintana Roo 77580, Mexico; (F.L.-P.); (S.N.C.-V.)
| | - Karina Bermeo
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de Mexico 04510, Mexico; (K.B.); (H.C.); (I.A.); (D.E.G.)
| | - Héctor Castro
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de Mexico 04510, Mexico; (K.B.); (H.C.); (I.A.); (D.E.G.)
| | - Zayil Salazar Campos
- Facultad de Ingeniería, Universidad Nacional Autónoma de México, Ciudad de Mexico 04510, Mexico;
- Departamento de Ciencias de la Salud, Div. C.B.S., Universidad Autónoma Metropolitana-Iztapalapa, Ciudad de Mexico 09310, Mexico; (I.J.); (R.F.); (H.G.-M.)
| | - Isabel Arenas
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de Mexico 04510, Mexico; (K.B.); (H.C.); (I.A.); (D.E.G.)
| | - Ariana Zavala-Moreno
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de Mexico 04510, Mexico;
| | - Sheila Narayán Chávez-Villela
- Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Puerto Morelos, Quintana Roo 77580, Mexico; (F.L.-P.); (S.N.C.-V.)
| | - Irma Jiménez
- Departamento de Ciencias de la Salud, Div. C.B.S., Universidad Autónoma Metropolitana-Iztapalapa, Ciudad de Mexico 09310, Mexico; (I.J.); (R.F.); (H.G.-M.)
| | - Roberto Arreguín-Espinosa
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Ciudad de Mexico 04510, Mexico;
| | - Reyna Fierro
- Departamento de Ciencias de la Salud, Div. C.B.S., Universidad Autónoma Metropolitana-Iztapalapa, Ciudad de Mexico 09310, Mexico; (I.J.); (R.F.); (H.G.-M.)
| | - Humberto González-Márquez
- Departamento de Ciencias de la Salud, Div. C.B.S., Universidad Autónoma Metropolitana-Iztapalapa, Ciudad de Mexico 09310, Mexico; (I.J.); (R.F.); (H.G.-M.)
| | - David E. Garcia
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de Mexico 04510, Mexico; (K.B.); (H.C.); (I.A.); (D.E.G.)
| | - Judith Sánchez-Rodríguez
- Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Puerto Morelos, Quintana Roo 77580, Mexico; (F.L.-P.); (S.N.C.-V.)
- Correspondence: ; Tel.: +52(998)8710009
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4
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Komsky-Elbaz A, Kalo D, Roth Z. Carryover effect of atrazine and its metabolite-from treated bovine spermatozoa to the embryo's transcriptome†. Biol Reprod 2021; 104:1162-1180. [PMID: 33624745 DOI: 10.1093/biolre/ioab027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 01/14/2021] [Accepted: 02/15/2021] [Indexed: 01/20/2023] Open
Abstract
Atrazine (ATZ) is an extensively used herbicide and ubiquitous environmental contaminant. ATZ and its metabolite, diaminochlorotriazine (DACT), cause several cellular and functional alterations in spermatozoa. We aimed to examine the effect of ATZ/DACT on spermatozoon DNA integrity, fertilization competence, embryonic development, and transcriptome profile of in vitro-produced embryos derived from fertilization with pre-exposed sperm. Bovine spermatozoa exposed to ATZ (0.1 or 1 μM) or DACT (1 or 10 μM) during in vitro capacitation were used for in vitro fertilization of untreated oocytes. Cleavage and blastocyst-formation rates were evaluated 42 h and 7 days postfertilization, respectively. The association between DNA fragmentation and apoptosis (annexin V kit) was determined. Fertilization competence of annexin-positive (AV+) and annexin-negative (AV-) spermatozoa was examined. Microarray analysis was performed for 7-day blastocysts. Intracytoplasmic sperm injection was performed with control (AV+, AV-) and DACT (AV+, AV-) spermatozoa. Cleavage rates did not differ between groups and blastocyst formation tended to be higher for AV- vs. AV+ in both control and DACT groups, suggesting that acrosome reaction, rather than DNA fragmentation, underlies the reduced cleavage. Transcriptomic analysis revealed 139 and 230 differentially expressed genes in blastocysts derived from ATZ- and DACT-exposed spermatozoa, respectively, relative to controls. Proteomic analysis shown differential expression of proteins in ATZ- or DACT-treated spermatozoa, in particular proteins related to cellular processes and biological pathways. Therefore, we assume that factors delivered by the spermatozoa, regardless of DNA fragmentation, are also involved. Overall, the current study reveals a deleterious carryover effect of ATZ/DACT from the spermatozoa to the developing embryo.
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Affiliation(s)
- A Komsky-Elbaz
- Department of Animal Sciences, The Hebrew University, Rehovot, Israel.,Animal Sperm Research Center, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel.,Center of Excellence in Agriculture and Environmental Health, Jerusalem, Israel
| | - D Kalo
- Department of Animal Sciences, The Hebrew University, Rehovot, Israel.,Animal Sperm Research Center, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel.,Center of Excellence in Agriculture and Environmental Health, Jerusalem, Israel
| | - Z Roth
- Department of Animal Sciences, The Hebrew University, Rehovot, Israel.,Animal Sperm Research Center, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel.,Center of Excellence in Agriculture and Environmental Health, Jerusalem, Israel
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5
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Oseguera-López I, Pérez-Cerezales S, Ortiz-Sánchez PB, Mondragon-Payne O, Sánchez-Sánchez R, Jiménez-Morales I, Fierro R, González-Márquez H. Perfluorooctane Sulfonate (PFOS) and Perfluorohexane Sulfonate (PFHxS) Alters Protein Phosphorylation, Increase ROS Levels and DNA Fragmentation during In Vitro Capacitation of Boar Spermatozoa. Animals (Basel) 2020; 10:ani10101934. [PMID: 33096732 PMCID: PMC7588980 DOI: 10.3390/ani10101934] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 10/15/2020] [Indexed: 12/31/2022] Open
Abstract
Simple Summary Perfluorinated compounds are synthetic chemicals, with a wide variety of applications like firefighting foams, food packaging, additives in paper and fabrics to avoid dyes. Perfluorooctane sulfonate and perfluorohexane sulfonate are globally distributed, and contaminates air, water, food, and dust, have toxic effects and bioaccumulate. Significant levels of these compounds have found in blood serum, breast milk, and semen of occupationally exposed and unexposed people, as well as in blood serum and organs of the domestic, farm, and wild animals. The present study seeks to analyze the toxic effects and possible alterations caused by the presence of these compounds in boar sperm during the in vitro capacitation, due to their toxicity, worldwide distribution, and lack of information in spermatozoa physiology during pre-fertilization processes. Abstract Perfluorooctane sulfonate (PFOS) and perfluorohexane sulfonate (PFHxS) are toxic and bioaccumulative, included in the Stockholm Convention’s list as persistent organic pollutants. Due to their toxicity, worldwide distribution, and lack of information in spermatozoa physiology during pre-fertilization processes, the present study seeks to analyze the toxic effects and possible alterations caused by the presence of these compounds in boar sperm during the in vitro capacitation. The spermatozoa capacitation was performed in supplemented TALP-Hepes media and mean lethal concentration values of 460.55 μM for PFOS, and 1930.60 μM for PFHxS were obtained. Results by chlortetracycline staining showed that intracellular Ca2+ patterns bound to membrane proteins were scarcely affected by PFOS. The spontaneous acrosome reaction determined by FITC-PNA was significantly reduced by PFOS and slightly increased by PFHxS. Both toxic compounds significantly alter the normal capacitation process from 30 min of exposure. An increase in ROS production was observed by flow cytometry and considerable DNA fragmentation by the comet assay. The immunocytochemistry showed a decrease of tyrosine phosphorylation in proteins of the equatorial and acrosomal zone of the spermatozoa head. In conclusion, PFOS and PFHxS have toxic effects on the sperm, causing mortality and altering vital parameters for proper sperm capacitation.
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Affiliation(s)
- Iván Oseguera-López
- Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Mexico City 09340, Mexico; (I.O.-L.); (P.B.O.-S.)
| | - Serafín Pérez-Cerezales
- Departamento de Reproducción Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 28040 Madrid, Spain; (S.P.-C.); (R.S.-S.)
| | - Paola Berenice Ortiz-Sánchez
- Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Mexico City 09340, Mexico; (I.O.-L.); (P.B.O.-S.)
| | - Oscar Mondragon-Payne
- Maestría en Biología Experimental, Universidad Autónoma Metropolitana, Mexico City 09340, Mexico;
| | - Raúl Sánchez-Sánchez
- Departamento de Reproducción Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 28040 Madrid, Spain; (S.P.-C.); (R.S.-S.)
| | - Irma Jiménez-Morales
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City 09340, Mexico; (I.J.-M.); (R.F.)
| | - Reyna Fierro
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City 09340, Mexico; (I.J.-M.); (R.F.)
| | - Humberto González-Márquez
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City 09340, Mexico; (I.J.-M.); (R.F.)
- Correspondence: ; Tel.: +52-55-5804-6557
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6
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Roth Z, Komsky-Elbaz A, Kalo D. Effect of environmental contamination on female and male gametes - A lesson from bovines. Anim Reprod 2020; 17:e20200041. [PMID: 33029217 PMCID: PMC7534576 DOI: 10.1590/1984-3143-ar2020-0041] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Endocrine-disrupting compounds (EDCs) and foodborne contaminants are environmental pollutants that are considered reproductive toxicants due to their deleterious effects on female and male gametes. Among the EDCs, the phthalate plasticizers are of growing concern. In-vivo and in-vitro models indicate that the oocyte is highly sensitive to phthalates. This review summarizes the effects of di(2-ethylhexyl) phthalate and its major metabolite mono(2-ethyhexyl) phthalate (MEHP) on the oocyte. MEHP reduces the proportion of oocytes that fertilize, cleave and develop to the blastocyst stage. This is associated with negative effects on meiotic progression, and disruption of cortical granules, endoplasmic reticulum and mitochondrial reorganization. MEHP alters mitochondrial membrane polarity, increases reactive oxygen species levels and induces alterations in genes associated with oxidative phosphorylation. A carryover effect from the oocyte to the blastocyst is manifested by alterations in the transcriptomic profile of blastocysts developed from MEHP-treated oocytes. Among foodborne contaminants, the pesticide atrazine (ATZ) and the mycotoxin aflatoxin B1 (AFB1) are of high concern. The potential hazards associated with exposure of spermatozoa to these contaminants and their carryover effect to the blastocyst are described. AFB1 and ATZ reduce spermatozoa's viability, as reflected by a high proportion of cells with damaged plasma membrane; induce acrosome reaction, expressed as damage to the acrosomal membrane; and interfere with mitochondrial function, characterized by hyperpolarization of the membrane. ATZ and AFB1-treated spermatozoa show a high proportion of cells with fragmented DNA. Exposure of spermatozoa to AFB1 and ATZ reduces fertilization and cleavage rates, but not that of blastocyst formation. However, fertilization with AFB1- or ATZ-treated spermatozoa impairs transcript expression in the formed blastocysts, implying a carryover effect. Taken together, the review indicates the risk of exposing farm animals to environmental contaminants, and their deleterious effects on female and male gametes and the developing embryo.
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Affiliation(s)
- Zvi Roth
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Alisa Komsky-Elbaz
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Dorit Kalo
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
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7
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Komsky-Elbaz A, Saktsier M, Biran D, Argov-Argaman N, Azaizeh H, Landau YS, Roth Z. Atrazine-induced toxicity in goat spermatozoa is alleviated to some extent by polyphenol-enriched feed. CHEMOSPHERE 2019; 236:124858. [PMID: 31549674 DOI: 10.1016/j.chemosphere.2019.124858] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/10/2019] [Accepted: 09/13/2019] [Indexed: 06/10/2023]
Abstract
Atrazine (ATZ) is one of the most extensively used herbicides to control growth of broadleaf and grassy weeds in crops. ATZ and its metabolites have deleterious effect on sperm quality. ATZ is also known for its ability to induce oxidative stress. Pistacia lentiscus (PL) is an evergreen shrub, with a high content of polyphenols in leaf extracts, with a known anti-inflammatory and antioxidant properties. The protective effect of PL or its extracts against ATZ-induced damage have not been yet evaluated. We examined the harmful effects of atrazine (ATZ) exposure on male reproductive system, using goat (Capra hircus) model spermatozoa and the protective effects of PL and PL ethanolic extract (PLE). In in-vivo experiments, male goats were fed a standard ration or one supplemented with 15 mg ATZ/kg body weight daily, for 6 months. Exposure to ATZ impaired the spermatozoa's morphology, viability, mitochondrial membrane potential and cell lipid composition. These alterations may in turn lead to reduced fertilization competence of the exposed spermatozoa. In an ex-vivo experiment, spermatozoa from male goats fed a standard ration or one supplemented with PL or PLE for 90 days and then were exposed to 1 μM ATZ or 10 μM of its major metabolite diaminochlorotriazine (DACT) through in-vitro capacitation. Prefeeding with PL or PLE partially attenuated the harmful effects of ATZ and DACT. Dietary supplementation with polyphenol-enriched feed can protect, to a certain extent, spermatozoa in males exposed to environmental toxicants.
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Affiliation(s)
- Alisa Komsky-Elbaz
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Animal Sperm Research Center, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Center of Excellence in Agriculture and Environmental Health, The Hebrew University of Jerusalem, Israel
| | - Moty Saktsier
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Animal Sperm Research Center, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel
| | - David Biran
- Extension Services, Ministry of Agriculture and Rural Development, Bet Dagan, Israel
| | - Nurit Argov-Argaman
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel
| | - Hassan Azaizeh
- The Institute of Applied Research (affiliated with University of Haifa), The Galilee Society, Shefa-Amr, 20200, Israel; Tel-Hai College, Department of Environmental Sciences, Upper Galilee, 12208, Israel
| | - Yan S Landau
- Department of Natural Resources and Agronomy, Agricultural Research Organization, The Volcani Center, Bet-Dagan, Israel
| | - Zvi Roth
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Animal Sperm Research Center, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel; Center of Excellence in Agriculture and Environmental Health, The Hebrew University of Jerusalem, Israel.
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8
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He YT, Wang W, Shen W, Sun QY, Yin S. Melatonin protects against Fenoxaprop-ethyl exposure-induced meiotic defects in mouse oocytes. Toxicology 2019; 425:152241. [DOI: 10.1016/j.tox.2019.152241] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 06/11/2019] [Accepted: 06/28/2019] [Indexed: 12/14/2022]
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9
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Elsharkawy EE, El-Nasser MA, Bakheet AA. Mancozeb impaired male fertility in rabbits with trials of glutathione detoxification. Regul Toxicol Pharmacol 2019; 105:86-98. [PMID: 31014950 DOI: 10.1016/j.yrtph.2019.04.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 03/18/2019] [Accepted: 04/16/2019] [Indexed: 12/28/2022]
Abstract
The study aims to evaluate the potential reproductive toxicity induced by mancozeb fungicide in male rabbits and to examine the ameliorative effect of glutathione (GSH), a non-enzymatic antioxidant, against mancozeb reproductive toxicity. Mancozeb is a member of the dithiocarbamates group currently in use in the management of fungal diseases of plants. To achieve these aims, mature male White New-Zealand rabbits of 4-5 months old were randomly assigned to four groups of 9 animals each: control, mancozeb only, mancozeb and GSH, and GSH only. This study discovered a significant reduction in serum FSH, LH, testosterone and testicular LDH, ACP, and ALP levels in the groups of mancozeb-treated rabbits compared with control. The mancozeb-treated groups also showed significant losses in sperm viability, along with a significant increase in the number of abnormal sperms. Finally, an upregulation in steroidogenic 3β-HSD enzyme activity was noted in mancozeb-treated rabbits. Histopathological inspection of the testicles established disruption of the germinal epithelium with vacuolization of Leydig cells and reduced spermatogenic cells. GSH co-administration increased serum concentrations of FSH, LH, testosterone, and levels of the testicular enzymes: LDH, ACP, and ALP. Improved steroidogenesis was indicated in this group by a significant improvement in the testicular 3β-HSD enzyme, by a significant increase in sperm viability, and by a significant decrease in the number of abnormal sperms. The findings of this study suggest that mancozeb exposure has anti-spermatogenic and anti-steroidogenic adverse effects in rabbits and administration of GSH may alleviate the reproductive toxicity.
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Affiliation(s)
- Eman E Elsharkawy
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Assiut University, Egypt.
| | - Mahmoud Abd El-Nasser
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Assiut University, Egypt
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10
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He YT, Yang LL, Zhao Y, Shen W, Yin S, Sun QY. Fenoxaprop-ethyl affects mouse oocyte quality and the underlying mechanisms. PEST MANAGEMENT SCIENCE 2019; 75:844-851. [PMID: 30152098 DOI: 10.1002/ps.5190] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 08/23/2018] [Accepted: 08/24/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Fenoxaprop-ethyl (FE) is an active ingredient of commercially available herbicide formulations. Its overuse has caused much damage to the environment, livestock breeding, agricultural crops and humans. However, little is known about the effects of FE exposure on female reproductive health and the mechanisms underlying those effects. In this study, we investigated the toxic effects of FE on oocyte quality and their underlying mechanisms in mice fed a diet containing FE. RESULTS Ovary weight and numbers of oocytes were reduced in FE-treated mice. Moreover, oocyte quality was seriously impaired, as shown by the reduced rate of first polar body extrusion and fertilization ability in vivo. In FE-treated mice, oocytes presented reduced actin expression and abnormal meiotic spindle morphology, which indicate that cytoskeletal integrality is disrupted. Also, FE induced mitochondrial dysfunction, reflected by the accumulation of reactive oxygen species (ROS), apoptosis and autophagy, as revealed by fluorescent staining analysis and real-time polymerase chain reaction (qPCR). Finally, FE led to changes in epigenetic modifications such as histone H3K27me3 and H3K9me2 in oocytes. CONCLUSIONS Our results indicate that FE has adverse effects on oocyte quality as assessed by maturation and fertilization potential, due to disrupted cytoskeletal integrality, and mitochondrial dysfunction leading to ROS accumulation, apoptosis and autophagy. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Ya-Ting He
- College of Animal Science and Technology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, China
| | - Lei-Lei Yang
- College of Animal Science and Technology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, China
| | - Yong Zhao
- College of Animal Science and Technology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, China
| | - Wei Shen
- College of Animal Science and Technology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, China
| | - Shen Yin
- College of Animal Science and Technology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, China
| | - Qing-Yuan Sun
- College of Animal Science and Technology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, China
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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Saalfeld GQ, Varela Junior AS, Castro T, Pereira FA, Gheller SMM, da Silva AC, Corcini CD, da Rosa CE, Colares EP. Low atrazine dosages reduce sperm quality of Calomys laucha mice. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:2924-2931. [PMID: 29147981 DOI: 10.1007/s11356-017-0657-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 10/31/2017] [Indexed: 06/07/2023]
Abstract
Reproductive effects caused by the exposure to environmentally relevant dosages of atrazine on wild animals are poorly understood. This study evaluated the effects of three dosages of atrazine on sperm parameters of adult Calomys laucha males. Adult mice were orally exposed to dosages of 0 (water and vehicle control), 0.1, 1, and 10 mg/kg of animal weight for a 21-day period. Following exposure, analyses were performed to determine sperm motility parameters, plasma membrane integrity and fluidity, mitochondrial functionality, acrosome integrity, DNA damage, lipid peroxidation, and production of reactive oxygen species (ROS) in the sperm samples. Total and progressive motility were reduced in all dosages in comparison to control groups. Membrane integrity and mitochondrial functionality of sperm were reduced in all dosages, and the sperm membrane fluidity increased in the higher dosages of atrazine (1 and 10 mg/kg), in comparison with the vehicle control. A decrease in the acrosome integrity was noted at 10 mg/kg of atrazine, compared to the control groups. The integrity of DNA, ROS generation, and lipid peroxidation of sperm showed no significant differences when compared with the control groups. These results suggest that exposure to low dosages of atrazine can affect sperm parameters of Calomys laucha and therefore reduce the reproductive capacity of wild rodent species.
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Affiliation(s)
- Graciela Quintana Saalfeld
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Avenida Itália, km 08 s/n, Caixa Postal 474, Rio Grande, RS, 96201-900, Brazil.
| | - Antônio Sergio Varela Junior
- Reprodução Animal Comparada, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, Brazil
| | - Tiane Castro
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Avenida Itália, km 08 s/n, Caixa Postal 474, Rio Grande, RS, 96201-900, Brazil
| | - Fernanda Alves Pereira
- Reprodução Animal Comparada, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, Brazil
| | - Stela Mari Meneghello Gheller
- Reprodução Animal Comparada, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, Brazil
- ReproPel, Faculdade de Veterinária, Campus Capão do Leão, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Alessandra Cardoso da Silva
- ReproPel, Faculdade de Veterinária, Campus Capão do Leão, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Carine Dahl Corcini
- Reprodução Animal Comparada, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, Brazil
- ReproPel, Faculdade de Veterinária, Campus Capão do Leão, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Carlos Eduardo da Rosa
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Avenida Itália, km 08 s/n, Caixa Postal 474, Rio Grande, RS, 96201-900, Brazil
| | - Elton Pinto Colares
- Reprodução Animal Comparada, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, Brazil
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12
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Aflatoxin B1 impairs sperm quality and fertilization competence. Toxicology 2017; 393:42-50. [PMID: 29113834 DOI: 10.1016/j.tox.2017.11.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/02/2017] [Accepted: 11/03/2017] [Indexed: 12/17/2022]
Abstract
Aflatoxins are poisonous byproducts of the soilborne fungus Aspergillus, involved in the decomposition of plant materials. Aflatoxins can be found in various food products, such as maize, sorghum, millet, rice and wheat. AFB1 is the most toxic of these, classified as a carcinogen and mutagen for both humans and animals. AFB1 has been detected in human cord blood and placenta; however, its toxic effect on sperm is less known. The current study examines sperm responses associated with AFB1 exposure. These included acrosome integrity and function, mitochondrial polarity, DNA fragmentation, fertilization competence and early embryonic development. Spermatozoa were obtained from bull ejaculate and epididymis and capacitated in vitro for 4h with 0, 0.1, 1, 10 and 100μM AFB1. Following capacitation, acrosome reaction (AR) was induced by Ca2+ ionophore. The integrity and functionality of sperm were examined simultaneously by florescent staining. A Halosperm DNA fragmentation kit was used to evaluate DNA integrity. An in-vitro culture system was used to evaluate fertilization competence and blastocyst formation rate, using bovine oocytes. Findings indicate dose-responsive variation among compartments to AFB1 exposure. Sperm viability, expressed by integrity of the plasma membrane, was lower in sperm isolated from ejaculate or epididymis after culturing with AFB1. Exposure to AFB1 reduced the proportion of sperm from the epididymis tail undergoing acrosome reaction induced by Ca2+ ionophore. AFB1 impaired mitochondrial membrane potential (ΔYm) in sperm isolated from ejaculate and the epididymis tail. Exposing ejaculated sperm to AFB1 increased the proportion of sperm with fragmented DNA and reduced the proportion of embryos that cleaved to the 2- to 4-cell stage, 42h postfertilization, however, the proportion of embryos that developed to blastocysts, 7days postfertilization, did not differ among groups. The findings explore the harmful effects of AFB1 on sperm viability, ΔΨm and DNA integrity associated with fertility competence. We postulate that AFB1-induced fragmentation in paternal DNA might have a carryover effect on the quality of developing embryos. Further evaluation for the quality of blastocysts derived from sperm exposed to AFB1 is warranted.
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Komsky-Elbaz A, Roth Z. Effect of the herbicide atrazine and its metabolite DACT on bovine sperm quality. Reprod Toxicol 2017; 67:15-25. [DOI: 10.1016/j.reprotox.2016.11.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 10/30/2016] [Accepted: 11/01/2016] [Indexed: 01/07/2023]
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Krivoshiev BV, Dardenne F, Covaci A, Blust R, Husson SJ. Assessing in-vitro estrogenic effects of currently-used flame retardants. Toxicol In Vitro 2016; 33:153-62. [DOI: 10.1016/j.tiv.2016.03.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 03/07/2016] [Accepted: 03/11/2016] [Indexed: 01/16/2023]
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15
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Tavares RS, Escada-Rebelo S, Correia M, Mota PC, Ramalho-Santos J. The non-genomic effects of endocrine-disrupting chemicals on mammalian sperm. Reproduction 2016; 151:R1-R13. [DOI: 10.1530/rep-15-0355] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Exposure to toxicants present in the environment, especially the so-called endocrine-disrupting chemicals (EDCs), has been associated with decreased sperm quality and increased anomalies in male reproductive organs over the past decades. Both human and animal populations are continuously exposed to ubiquitous synthetic and natural-occurring EDCs through diet, dermal contact and/or inhalation, therefore potentially compromising male reproductive health. Although the effects of EDC are likely induced via multiple genomic-based pathways, their non-genomic effects may also be relevant. Furthermore, spermatozoa are transcriptionally inactive cells that can come in direct contact with EDCs in reproductive fluids and secretions and are therefore a good model to address non-genomic effects. This review thus focuses on the non-genomic effects of several important EDCs relevant to mammalian exposure. Notably, EDCs were found to interfere with pre-existing pathways inducing a panoply of deleterious effects to sperm function that included altered intracellular Ca2+oscillations, induction of oxidative stress, mitochondrial dysfunction, increased DNA damage and decreased sperm motility and viability, among others, potentially jeopardizing male fertility. Although many studies have used non-environmentally relevant concentrations of only one compound for mechanistic studies, it is important to remember that mammals are not exposed to one, but rather to a multitude of environmental EDCs, and synergistic effects may occur. Furthermore, some effects have been detected with single compounds at environmentally relevant concentrations.
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Tavares RS, Amaral S, Paiva C, Baptista M, Ramalho-Santos J. In vitro exposure to the organochlorine p,p'-DDE affects functional human sperm parameters. CHEMOSPHERE 2015; 120:443-446. [PMID: 25240159 DOI: 10.1016/j.chemosphere.2014.08.075] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 08/04/2014] [Accepted: 08/26/2014] [Indexed: 06/03/2023]
Abstract
Although no information exists regarding the levels of p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE) on reproductive fluids of heavily exposed populations, they are possibly quite high given the serum levels reported so far. In these populations altered semen quality has been reported, although the direct effects of this DDT metabolite on crucial sperm parameters remain largely unexplored. With this in mind, a long-term in vitro incubation that better mimics the putative continuous exposure of spermatozoa to p,p'-DDE in the female reproductive tract in vivo was used. Before compromising sperm viability, continuous p,p'-DDE exposure remarkably decreased sperm motility, possibly due to the combined reduction in the proportion of sperm with high mitochondrial membrane potential and cellular ATP levels, all of which were clearly more affected at 50 and 100 μM p,p'-DDE. Moreover, 25 μM p,p'-DDE was also able to promote a decline in sperm with high MMP, however without significantly affecting motility. On the other hand, p,p'-DDE at the highest concentration strongly inhibited the process of capacitation following 24h of incubation. In conclusion, human sperm function is affected by continuous high p,p'-DDE exposure which may ultimately compromise male fertility. Given our previously findings that showed a non-regulated Ca(2+) entry in the presence of p,p'-DDE, we suggest that this organochlorine may promote mitochondrial Ca(2+) overload which may culminate in a general mitochondrial dysfunction and cellular ATP depletion, thus affecting sperm fertilizing potential. Our findings suggest a broader understanding of the non-genomic mechanism of p,p'-DDE action in human sperm.
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Affiliation(s)
- Renata S Tavares
- Biology of Reproduction and Stem Cell Group, CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Department of Life Sciences, University of Coimbra, 3001-401 Coimbra, Portugal.
| | - Sandra Amaral
- Biology of Reproduction and Stem Cell Group, CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal.
| | - Carla Paiva
- Biology of Reproduction and Stem Cell Group, CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Department of Life Sciences, University of Coimbra, 3001-401 Coimbra, Portugal.
| | - Marta Baptista
- Biology of Reproduction and Stem Cell Group, CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Department of Life Sciences, University of Coimbra, 3001-401 Coimbra, Portugal.
| | - João Ramalho-Santos
- Biology of Reproduction and Stem Cell Group, CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Department of Life Sciences, University of Coimbra, 3001-401 Coimbra, Portugal.
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Kotula-Balak M, Grzmil P, Chojnacka K, Andryka K, Bilinska B. Do photoperiod and endocrine disruptor 4-tert-octylphenol effect on spermatozoa of bank vole (Clethrionomys glareolus)? Gen Comp Endocrinol 2014; 201:21-9. [PMID: 24698786 DOI: 10.1016/j.ygcen.2014.03.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 01/13/2014] [Accepted: 03/22/2014] [Indexed: 11/24/2022]
Abstract
Photoperiod is an environmental signal that controls physiology and behavior of all organisms. Bank voles, which are seasonal breeders, are stimulated to reproduce by the long photoperiod associated with spring and summer. To date, physiology of bank vole spermatozoa has not been explored, although they constitute an interesting model for examining the relationship between photoperiod and xenoestrogen on spermatozoa function. In an attempt to evaluate the acute effect of 4-tert-octylphenol (OP) an in vitro system was used. Spermatozoa isolated from the cauda epididymidies of long-day (LD; 18 h light: 6 h darkness) and short-day (SD; 6 h light: 18 h darkness) bank voles were treated with two OP concentrations (10(-4) M and 10(-8)M, respectively). OP-treated spermatozoa were used for the examination of motility parameters (computer-assisted semen analyzer CEROS), acrosome integrity (Commassie blue staining), cAMP production (immunoenzymatic assay) and cell viability (flow-cytometry analysis). The study revealed the photoperiod-dependent effect of short OP-treatment on motility parameters of vole spermatozoa. In LD spermatozoa, an increase of velocities: (curvilinear velocity [VCL], average path velocity [VAP] straight line velocity [VSL]) and head activity (amplitude of the lateral head displacement, [ALH]) was found. Interestingly, in SD spermatozoa opposite effect on VCL, VAP, VSL and ALH was observed, however only after treatment with 10(-4)M OP. The dose-dependent influence of OP upon acrosome integrity, as well as cAMP levels, in relation to the reproductive status of voles was observed. Moreover, OP exposure affected spermatozoa morphology rather than spermatozoa viability.
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Affiliation(s)
| | - Pawel Grzmil
- Department of Genetics and Evolution, Institute of Zoology, Jagiellonian University, Krakow, Poland
| | - Katarzyna Chojnacka
- Department of Endocrinology, Institute of Zoology, Jagiellonian University, Krakow, Poland
| | - Katarzyna Andryka
- Department of Endocrinology, Institute of Zoology, Jagiellonian University, Krakow, Poland
| | - Barbara Bilinska
- Department of Endocrinology, Institute of Zoology, Jagiellonian University, Krakow, Poland
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Differential effects of herbicides atrazine and fenoxaprop-ethyl, and insecticides diazinon and malathion, on viability and maturation of porcine oocytes in vitro. Toxicol In Vitro 2010; 24:224-30. [DOI: 10.1016/j.tiv.2009.09.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Revised: 06/22/2009] [Accepted: 09/03/2009] [Indexed: 11/21/2022]
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