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Chang C, Dai Y, Zhang J, Wu Z, Li S, Zhou Z. Associations between exposure to pesticides mixture and semen quality among the non-occupationally exposed males: Four statistical models. ENVIRONMENTAL RESEARCH 2024; 257:119400. [PMID: 38866311 DOI: 10.1016/j.envres.2024.119400] [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: 02/04/2024] [Revised: 06/04/2024] [Accepted: 06/09/2024] [Indexed: 06/14/2024]
Abstract
Most epidemiological studies on the associations between pesticides exposure and semen quality have been based on a single pesticide, with inconsistent major results. In contrast, there was limited human evidence on the potential effect of pesticides mixture on semen quality. Our study aimed to investigate the relationship of pesticide profiles with semen quality parameters among 299 non-occupationally exposed males aged 25-50 without any clinical abnormalities. Serum concentrations of 21 pesticides were quantified by gas chromatography-tandem mass spectrometry (GC-MS/MS). Semen quality parameters were abstracted from medical records. Generalized linear regression models (GLMs) and three mixture approaches, including weighted quantile sum regression (WQS), elastic net regression (ENR) and Bayesian kernel machine regression (BKMR), were applied to explore the single and mixed effects of pesticide exposure on semen quality. In GLMs, as the serum levels of Bendiocarb, β-BHC, Clomazone, Dicrotophos, Dimethenamid, Paclobutrazole, Pentachloroaniline and Pyrimethanil increased, the straight-line velocity (VSL), linearity (LIN) and straightness (STR) decreased. This negative association also occurred between the concentration of β-BHC, Pentachloroaniline, Pyrimethanil and progressive motility, total motility. In the WQS models, pesticides mixture was negatively associated with total motility and several sperm motility parameters (β: -3.07∼-1.02 per decile, FDR-P<0.05). After screening the important pesticides derived from the mixture by ENR model, the BKMR models showed that the decreased qualities for VSL, LIN, and STR were also observed when pesticide mixtures were at ≥ 70th percentiles. Clomazone, Dimethenamid, and Pyrimethanil (Posterior inclusion probability, PIP: 0.2850-0.8900) were identified as relatively important contributors. The study provides evidence that exposure to single or mixed pesticide was associated with impaired semen quality.
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Affiliation(s)
- Chunxin Chang
- Key Laboratory of Public Health Safety of Ministry of Education, Key Laboratory of Health Technology Assessment of National Health Commission, School of Public Health, Fudan University, No. 130 Dong'an Road, Shanghai 200032, China; The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
| | - Yiming Dai
- Key Laboratory of Public Health Safety of Ministry of Education, Key Laboratory of Health Technology Assessment of National Health Commission, School of Public Health, Fudan University, No. 130 Dong'an Road, Shanghai 200032, China
| | - Jiming Zhang
- Key Laboratory of Public Health Safety of Ministry of Education, Key Laboratory of Health Technology Assessment of National Health Commission, School of Public Health, Fudan University, No. 130 Dong'an Road, Shanghai 200032, China
| | - Zhengmu Wu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
| | - Shuyuan Li
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China.
| | - Zhijun Zhou
- Key Laboratory of Public Health Safety of Ministry of Education, Key Laboratory of Health Technology Assessment of National Health Commission, School of Public Health, Fudan University, No. 130 Dong'an Road, Shanghai 200032, China.
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Jung EJ, Jo JH, Uwamahoro C, Jang SI, Hwang JM, Lee WJ, Bae JW, Ryu DY, Kwon WS. Nirmatrelvir has detrimental effects on sperm function by altering the PI3K/PDK1/AKT signaling pathway. Toxicol In Vitro 2024; 99:105848. [PMID: 38772495 DOI: 10.1016/j.tiv.2024.105848] [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: 02/13/2024] [Revised: 05/13/2024] [Accepted: 05/17/2024] [Indexed: 05/23/2024]
Abstract
Nirmatrelvir (NMV) is a recently developed selective inhibitor of the main protease of Sars-Cov-2 that reduces the severity of infection. Despite its widespread use and various side effects, NMV's effect on male fertility is still unclear. This study was thus established to investigate how NMV affects male fertility. For experiments, Duroc spermatozoa were incubated with various concentrations of NMV (0, 0.1, 1, 10, 50, and 100 μM). Then, sperm motility, motion kinematics, capacitation status, intracellular ATP level, and cell viability were evaluated. In addition, the expression levels of phospho-PKA substrates, tyrosine-phosphorylated proteins, and PI3K/PDK1/AKT signaling pathway-related proteins were measured by western blotting. Our results showed that sperm motility, motion kinematics, proportion of capacitated spermatozoa, and intracellular ATP level were significantly decreased by NMV in a dose-dependent manner. Moreover, PKA activation was significantly suppressed by NMV, and expression levels of PI3K, phospho-PDK1, AKT, and phospho-AKT (Thr308 and Ser473) were significantly increased in a dose-dependent manner. Combining these findings, it is suggested that NMV has detrimental effects on sperm function by inducing abnormal changes in the PI3K/PDK1/AKT signaling pathway, resulting in PKA deactivation. Therefore, there is a need to pay particular attention to its male reproductive toxicity when NMV is administered.
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Affiliation(s)
- Eun-Ju Jung
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Jae-Hwan Jo
- Department of Animal Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Claudine Uwamahoro
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Seung-Ik Jang
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Ju-Mi Hwang
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Woo-Jin Lee
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Jeong-Won Bae
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Do-Yeal Ryu
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Woo-Sung Kwon
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea; Department of Animal Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea; Research Institute for Innovative Animal Science, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea.
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Uwamahoro C, Jo JH, Jang SI, Jung EJ, Lee WJ, Bae JW, Kwon WS. Assessing the Risks of Pesticide Exposure: Implications for Endocrine Disruption and Male Fertility. Int J Mol Sci 2024; 25:6945. [PMID: 39000054 PMCID: PMC11241045 DOI: 10.3390/ijms25136945] [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: 05/08/2024] [Revised: 06/17/2024] [Accepted: 06/20/2024] [Indexed: 07/14/2024] Open
Abstract
Pesticides serve as essential tools in agriculture and public health, aiding in pest control and disease management. However, their widespread use has prompted concerns regarding their adverse effects on humans and animals. This review offers a comprehensive examination of the toxicity profile of pesticides, focusing on their detrimental impacts on the nervous, hepatic, cardiac, and pulmonary systems, and their impact on reproductive functions. Additionally, it discusses how pesticides mimic hormones, thereby inducing dysfunction in the endocrine system. Pesticides disrupt the endocrine system, leading to neurological impairments, hepatocellular abnormalities, cardiac dysfunction, and respiratory issues. Furthermore, they also exert adverse effects on reproductive organs, disrupting hormone levels and causing reproductive dysfunction. Mechanistically, pesticides interfere with neurotransmitter function, enzyme activity, and hormone regulation. This review highlights the effects of pesticides on male reproduction, particularly sperm capacitation, the process wherein ejaculated sperm undergo physiological changes within the female reproductive tract, acquiring the ability to fertilize an oocyte. Pesticides have been reported to inhibit the morphological changes crucial for sperm capacitation, resulting in poor sperm capacitation and eventual male infertility. Understanding the toxic effects of pesticides is crucial for mitigating their impact on human and animal health, and in guiding future research endeavors.
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Affiliation(s)
- Claudine Uwamahoro
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea; (C.U.); (J.-H.J.); (S.-I.J.); (E.-J.J.); (W.-J.L.); (J.-W.B.)
| | - Jae-Hwan Jo
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea; (C.U.); (J.-H.J.); (S.-I.J.); (E.-J.J.); (W.-J.L.); (J.-W.B.)
| | - Seung-Ik Jang
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea; (C.U.); (J.-H.J.); (S.-I.J.); (E.-J.J.); (W.-J.L.); (J.-W.B.)
| | - Eun-Ju Jung
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea; (C.U.); (J.-H.J.); (S.-I.J.); (E.-J.J.); (W.-J.L.); (J.-W.B.)
| | - Woo-Jin Lee
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea; (C.U.); (J.-H.J.); (S.-I.J.); (E.-J.J.); (W.-J.L.); (J.-W.B.)
| | - Jeong-Won Bae
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea; (C.U.); (J.-H.J.); (S.-I.J.); (E.-J.J.); (W.-J.L.); (J.-W.B.)
| | - Woo-Sung Kwon
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea; (C.U.); (J.-H.J.); (S.-I.J.); (E.-J.J.); (W.-J.L.); (J.-W.B.)
- Research Institute for Innovative Animal Science, Kyungpook National University, Sangju 37224, Republic of Korea
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Jung EJ, Jo JH, Uwamahoro C, Jang SI, Lee WJ, Hwang JM, Bae JW, Kwon WS. Ritonavir Has Reproductive Toxicity Depending on Disrupting PI3K/PDK1/AKT Signaling Pathway. TOXICS 2024; 12:73. [PMID: 38251029 PMCID: PMC10819985 DOI: 10.3390/toxics12010073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/08/2024] [Accepted: 01/12/2024] [Indexed: 01/23/2024]
Abstract
Ritonavir (RTV) is an antiviral and a component of COVID-19 treatments. Moreover, RTV demonstrates anti-cancer effects by suppressing AKT. However, RTV has cytotoxicity and suppresses sperm functions by altering AKT activity. Although abnormal AKT activity is known for causing detrimental effects on sperm functions, how RTV alters AKT signaling in spermatozoa remains unknown. Therefore, this study aimed to investigate reproductive toxicity of RTV in spermatozoa through phosphoinositide 3-kinase/phosphoinositide-dependent protein kinase-1/protein kinase B (PI3K/PDK1/AKT) signaling. Duroc spermatozoa were treated with various concentrations of RTV, and capacitation was induced. Sperm functions (sperm motility, motion kinematics, capacitation status, and cell viability) and expression levels of tyrosine-phosphorylated proteins and PI3K/PDK1/AKT pathway-related proteins were evaluated. In the results, RTV significantly suppressed sperm motility, motion kinematics, capacitation, acrosome reactions, and cell viability. Additionally, RTV significantly increased levels of phospho-tyrosine proteins and PI3K/PDK1/AKT pathway-related proteins except for AKT and PI3K. The expression level of AKT was not significantly altered and that of PI3K was significantly decreased. These results suggest RTV may suppress sperm functions by induced alterations of PI3K/PDK1/AKT pathway through abnormally increased tyrosine phosphorylation. Therefore, we suggest people who use or prescribe RTV need to consider its male reproductive toxicity.
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Affiliation(s)
- Eun-Ju Jung
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea; (E.-J.J.); (C.U.); (S.-I.J.); (W.-J.L.); (J.-M.H.); (J.-W.B.)
| | - Jae-Hwan Jo
- Department of Animal Biotechnology, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea;
| | - Claudine Uwamahoro
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea; (E.-J.J.); (C.U.); (S.-I.J.); (W.-J.L.); (J.-M.H.); (J.-W.B.)
| | - Seung-Ik Jang
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea; (E.-J.J.); (C.U.); (S.-I.J.); (W.-J.L.); (J.-M.H.); (J.-W.B.)
| | - Woo-Jin Lee
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea; (E.-J.J.); (C.U.); (S.-I.J.); (W.-J.L.); (J.-M.H.); (J.-W.B.)
| | - Ju-Mi Hwang
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea; (E.-J.J.); (C.U.); (S.-I.J.); (W.-J.L.); (J.-M.H.); (J.-W.B.)
| | - Jeong-Won Bae
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea; (E.-J.J.); (C.U.); (S.-I.J.); (W.-J.L.); (J.-M.H.); (J.-W.B.)
| | - Woo-Sung Kwon
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea; (E.-J.J.); (C.U.); (S.-I.J.); (W.-J.L.); (J.-M.H.); (J.-W.B.)
- Department of Animal Biotechnology, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea;
- Research Institute for Innovative Animal Science, Kyungpook National University, Sangju 37224, Gyeongsangbuk-do, Republic of Korea
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Marcu D, Keyser S, Petrik L, Fuhrimann S, Maree L. Contaminants of Emerging Concern (CECs) and Male Reproductive Health: Challenging the Future with a Double-Edged Sword. TOXICS 2023; 11:330. [PMID: 37112557 PMCID: PMC10141735 DOI: 10.3390/toxics11040330] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/10/2023] [Accepted: 03/15/2023] [Indexed: 06/19/2023]
Abstract
Approximately 9% of couples are infertile, with half of these cases relating to male factors. While many cases of male infertility are associated with genetic and lifestyle factors, approximately 30% of cases are still idiopathic. Contaminants of emerging concern (CECs) denote substances identified in the environment for the first time or detected at low concentrations during water quality analysis. Since CEC production and use have increased in recent decades, CECs are now ubiquitous in surface and groundwater. CECs are increasingly observed in human tissues, and parallel reports indicate that semen quality is continuously declining, supporting the notion that CECs may play a role in infertility. This narrative review focuses on several CECs (including pesticides and pharmaceuticals) detected in the nearshore marine environment of False Bay, Cape Town, South Africa, and deliberates their potential effects on male fertility and the offspring of exposed parents, as well as the use of spermatozoa in toxicological studies. Collective findings report that chronic in vivo exposure to pesticides, including atrazine, simazine, and chlorpyrifos, is likely to be detrimental to the reproduction of many organisms, as well as to sperm performance in vitro. Similarly, exposure to pharmaceuticals such as diclofenac and naproxen impairs sperm motility both in vivo and in vitro. These contaminants are also likely to play a key role in health and disease in offspring sired by parents exposed to CECs. On the other side of the double-edged sword, we propose that due to its sensitivity to environmental conditions, spermatozoa could be used as a bioindicator in eco- and repro-toxicology studies.
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Affiliation(s)
- Daniel Marcu
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, UK
- Comparative Spermatology Laboratory, Department of Medical Bioscience, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa;
| | - Shannen Keyser
- Comparative Spermatology Laboratory, Department of Medical Bioscience, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa;
| | - Leslie Petrik
- Environmental and Nano Sciences Group, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
| | - Samuel Fuhrimann
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute (Swiss TPH), 4123 Allschwil, Switzerland
| | - Liana Maree
- Comparative Spermatology Laboratory, Department of Medical Bioscience, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa;
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Akkam Y, Omari D, Alhmoud H, Alajmi M, Akkam N, Aljarrah I. Assessment of Xenoestrogens in Jordanian Water System: Activity and Identification. TOXICS 2023; 11:63. [PMID: 36668789 PMCID: PMC9866086 DOI: 10.3390/toxics11010063] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Sex hormone disruptors (xenoestrogens) are a global concern due to their potential toxicity. However, to date, there has been no study to investigate the presence of xenoestrogen pollutants in the Jordanian water system. Samples in triplicates were collected from six locations in Jordan, including dams, surface water, tap or faucet water, and filtered water (drinking water-local company). Xenoestrogens were then extracted and evaluated with a yeast estrogen screen utilizing Saccharomyces cerevisiae. Later, possible pollutants were mined using ultrahigh-performance liquid chromatography (UPLC) coupled with a Bruker impact II Q-TOF-MS. Possible hits were identified using MetaboScape software (4000 compounds), which includes pesticide, pharmaceutical pollutant, veterinary drug, and toxic compound databases and a special library of 75 possible xenoestrogens. The presence of xenoestrogens in vegetable samples collected from two different locations was also investigated. The total estrogen equivalents according to the YES system were 2.9 ± 1.2, 9.5 ± 5, 2.5 ± 1.5, 1.4 ± 0.9 ng/L for King Talal Dam, As-Samra Wastewater Treatment Plant, King Abdullah Canal, and tap water, respectively. In Almujeb Dam and drinking water, the estrogenic activity was below the detection limit. Numbers of identified xenoestrogens were: As-Samra Wastewater Treatment Plant 27 pollutants, King Talal Dam 20 pollutants, Almujeb Dam 10 pollutants, King Abdullah Canal 16 pollutants, Irbid tap water 32 pollutants, Amman tap water 30 pollutants, drinking water 3 pollutants, and vegetables 7 pollutants. However, a large number of compounds remained unknown. Xenoestrogen pollutants were detected in all tested samples, but the total estrogenic capacities were within the acceptable range. The major source of xenoestrogen pollutants was agricultural resources. Risk evaluations for low xenoestrogen activity should be taken into account, and thorough pesticide monitoring systems and regular inspections should also be established.
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Affiliation(s)
- Yazan Akkam
- Department of Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy, Yarmouk University, Irbid 21163, Jordan
| | - Derar Omari
- Department of Pharmaceutical Technology and Pharmaceutics, Faculty of Pharmacy, Yarmouk University, Irbid 21163, Jordan
| | - Hassan Alhmoud
- Department of Pharmaceutical Technology and Pharmaceutics, Faculty of Pharmacy, Yarmouk University, Irbid 21163, Jordan
- Faculty of Pharmacy, Jerash University, Irbid 26110, Jordan
| | - Mohammad Alajmi
- Department of Law and Science Department, Kuwait International Law School, Doha 93151, Kuwait
| | - Nosaibah Akkam
- Department of Anatomy and Cell Biology, Faculty of Medicine, Universität des Saarlandes, 66424 Hamburg, Germany
| | - Islam Aljarrah
- Department of Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy, Yarmouk University, Irbid 21163, Jordan
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Martínez-Mercado JP, Sierra-Santoyo A, Verdín-Betancourt FA, Rojas-García AE, Quintanilla-Vega B. Temephos, an organophosphate larvicide for residential use: a review of its toxicity. Crit Rev Toxicol 2022; 52:113-124. [PMID: 35608007 DOI: 10.1080/10408444.2022.2065967] [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: 11/03/2022]
Abstract
Temephos (O,O,O',O'-tetramethyl O,O'-thiodi-p-phenylene bis(phosphorothioate)) is a larvicide belonging to the family of organophosphate pesticides used for the control of different vectors of diseases, such as dengue, Zika, chikungunya, and dracunculiasis. The aim of this review was to discuss the available published information about temephos toxicokinetics and toxicity in mammals. Temephos is quickly absorbed in the gastrointestinal tract, distributed to all organs, and then it accumulates mainly in adipose tissue. It is metabolized by S-oxidation, oxidative desulfuration, and hydrolysis reactions, with the possible participation of cytochrome P450 (CYP). Temephos is mainly eliminated by feces, whereas some of its metabolites are eliminated by urine. The World Health Organization classifies it as class III: slightly dangerous with a NOAEL (no-observed adverse effect level) of 2.3 mg/kg/day for up to 90 days in rats, based on brain acetylcholinesterase (AChE) inhibition. A LOAEL (lowest observable adverse effect level) of 100 mg/kg/day for up to 44 days in rats was proposed based on cholinergic symptoms. However, some studies have shown that temephos causes toxic effects in mammals. The inhibition of the enzyme acetylcholinesterase (AChE) is one of its main demonstrated effects; however, this larvicide has also shown genotoxic effects and some adverse effects on male reproduction and fertility, as well as liver damage, even at low doses. We performed an extensive review through several databases of the literature about temephos toxicokinetics, and we recommend to revisit current assessment of temephos with the new available data.
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Affiliation(s)
- Juan Pablo Martínez-Mercado
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados (Cinvestav), Mexico City, Mexico
| | - Adolfo Sierra-Santoyo
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados (Cinvestav), Mexico City, Mexico
| | - Francisco Alberto Verdín-Betancourt
- Laboratorio de Contaminación y Toxicología Ambiental, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Tepic, Mexico
| | - Aurora Elizabeth Rojas-García
- Laboratorio de Contaminación y Toxicología Ambiental, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Tepic, Mexico
| | - Betzabet Quintanilla-Vega
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados (Cinvestav), Mexico City, Mexico
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Hwang JM, Bae JW, Jung EJ, Lee WJ, Kwon WS. Novaluron Has Detrimental Effects on Sperm Functions. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 19:ijerph19010061. [PMID: 35010320 PMCID: PMC8751217 DOI: 10.3390/ijerph19010061] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 05/16/2023]
Abstract
Although novaluron is an insect growth regulator with a low mammalian acute toxicity and a low risk to the environment and nontarget organisms, toxic effects of novaluron have been reported. However, no studies have yet evaluated the effect of novaluron on reproduction. Therefore, we examined the effects of novaluron on sperm functions. The spermatozoa of ICR mice were incubated with various concentrations of novaluron to induce capacitation. Then, sperm motion parameters and capacitation status were evaluated using CASA program and H33258/chlortetracycline staining. In addition, PKA activity and tyrosine phosphorylation were evaluated by Western blotting. After exposure, various sperm motion parameters were significantly decreased in a dose-dependent manner. The acrosome reaction was also significantly decreased in the high concentration groups. Sperm viability was significantly reduced at the highest concentration. In addition, PKA activity and tyrosine phosphorylation were also significantly altered. Thus, novaluron affects sperm viability, sperm motility, and motion kinematics during capacitation. Furthermore, it may promote the reduction in acrosome reactions. The physiological suppression of sperm function may depend on abnormal tyrosine phosphorylation via the alteration of PKA activity. Therefore, we suggest that it is necessary to consider reproductive toxicity when using novaluron as a pesticide.
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Affiliation(s)
- Ju-Mi Hwang
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Korea; (J.-M.H.); (J.-W.B.); (W.-J.L.)
| | - Jeong-Won Bae
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Korea; (J.-M.H.); (J.-W.B.); (W.-J.L.)
| | - Eun-Ju Jung
- Department of Animal Biotechnology, Kyungpook National University, Sangju 37224, Korea;
| | - Woo-Jin Lee
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Korea; (J.-M.H.); (J.-W.B.); (W.-J.L.)
| | - Woo-Sung Kwon
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Korea; (J.-M.H.); (J.-W.B.); (W.-J.L.)
- Department of Animal Biotechnology, Kyungpook National University, Sangju 37224, Korea;
- Correspondence: ; Tel.: +82-54-530-1942
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Peng W, Wang T, Liang XR, Yang YS, Wang QZ, Cheng HF, Peng YK, Ding F. Characterizing the potentially neuronal acetylcholinesterase reactivity toward chiral pyraclofos: Enantioselective insights from spectroscopy, in silico docking, molecular dynamics simulation and per-residue energy decomposition studies. J Mol Graph Model 2021; 110:108069. [PMID: 34773872 DOI: 10.1016/j.jmgm.2021.108069] [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: 10/09/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 10/20/2022]
Abstract
Chiral organophosphorus agents are distributed ubiquitously in the environment, but the neuroactivity of these asymmetric chemicals to humans remains uncertain. This scenario was to explore the stereoselective neurobiological response of human acetylcholinesterase (AChE) to chiral pyraclofos at the enantiomeric scale, and then decipher the microscopic basis of enantioselective neurotoxicity of pyraclofos enantiomers. The results indicated that (R)-/(S)-pyraclofos can form the bioconjugates with AChE with a stoichiometric ratio of 1:1, but the neuronal affinity of (R)-pyraclofos (K = 6.31 × 104 M-1) with AChE was larger than that of (S)-pyraclofos (K = 1.86 × 104 M-1), and significant enantioselectivity was existed in the biochemical reaction. The modes of neurobiological action revealed that pyraclofos enantiomers were situated at the substrate binding domain, and the strength of the overall noncovalent bonds between (S)-pyraclofos and the residues was weaker than that of (R)-pyraclofos, resulting in the high inhibitory effect of (R)-pyraclofos toward the activity of AChE. Dynamic enantioselective biointeractions illustrated that the intervention of inherent conformational flexibility in the AChE-(R)-pyraclofos was greater than that of the AChE-(S)-pyraclofos, which arises from the big spatial displacement and the conformational flip of the binding domain composed of the residues Thr-64~Asn-89, Gly-122~Asp-134, and Thr-436~Tyr-449. Energy decomposition exhibited that the Gibbs free energies of the AChE-(R)-/(S)-pyraclofos were ΔG° = -37.4/-30.2 kJ mol-1, respectively, and the disparity comes from the electrostatic energy during the stereoselective neurochemical reactions. Quantitative conformational analysis further confirmed the atomic-scale computational chemistry conclusions, and the perturbation of (S)-pyraclofos on the AChE's ordered conformation was lower than that of (R)-pyraclofos, which is germane to the interaction energies of the crucial residues, e.g. Tyr-124, Tyr-337, Asp-74, Trp-86, and Tyr-119. Evidently, this attempt will contribute mechanistic information to uncovering the neurobiological effects of chiral organophosphates on the body.
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Affiliation(s)
- Wei Peng
- School of Water and Environment, Chang'an University, Xi'an, 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, Xi'an, 710054, China; State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Tao Wang
- School of Water and Environment, Chang'an University, Xi'an, 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, Xi'an, 710054, China
| | - Xiang-Rong Liang
- School of Water and Environment, Chang'an University, Xi'an, 710054, China
| | - Yu-Sen Yang
- School of Water and Environment, Chang'an University, Xi'an, 710054, China
| | - Qi-Zhao Wang
- School of Water and Environment, Chang'an University, Xi'an, 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, Xi'an, 710054, China
| | - Hong-Fei Cheng
- School of Earth Science and Resources, Chang'an University, Xi'an, 710054, China
| | - Yu-Kui Peng
- Xining Center for Agricultural Product Quality and Safety Testing, Xining, 810016, China
| | - Fei Ding
- School of Water and Environment, Chang'an University, Xi'an, 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, Xi'an, 710054, China; Department of Agricultural Chemistry, Qingdao Agricultural University, Qingdao, 266109, China.
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Ramos-Flores Á, Camacho-Hernández I, Sierra-Santoyo A, Solís-Heredia MDJ, Verdín-Betancourt FA, Parra-Forero LY, López-González MDL, Hernández-Ochoa I, Quintanilla-Vega B. Temephos decreases sperm quality and fertilization rate and is metabolized in rat reproductive tissues at low dose exposure. Toxicol Sci 2021; 184:57-66. [PMID: 34382084 DOI: 10.1093/toxsci/kfab100] [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] [Indexed: 12/23/2022] Open
Abstract
Temephos is an organophosphorus (OP) pesticide used in control campaigns against vectors that transmit diseases, including dengue, a public health concern. The WHO classifies temephos in category III and its safe concentration (LOAEL) in male rats is 100 mg/kg/day for up to 44 days. Temephos inhibits acetylcholinesterase (AChE) and is metabolized in different tissues, probably by mixed-function oxidases; one of its metabolites is bisphenol S (BPS), which is considered an endocrine disruptor. The aim of this study was to evaluate the effects of temephos on sperm function and its biotransformation in the testis, epididymis, and other tissues to explore its toxicity in rats treated with 100 mg/kg/day/5 or 7 days (gavage). AChE activity was inhibited 70% starting on day 3 and 13 or 41% mortality was observed at 5 or 7 days, respectively. After 7 days, temephos significantly decreased sperm motility (30%) and viability (10%) and increased (10%) lipoperoxidation, and the sperm DNA exhibited no damage. Temephos was distributed and metabolized in all tissues, with the highest levels observed in the adipose tissue and temephos levels were 16-fold higher in the epididymis than in the testis. Notably, BPS was observed in the testis. At 5 days, decreased sperm motility (12.5%) and viability (5.7%) were observed and sperm fertilization decreased (30%). These results suggest that temephos decreases sperm quality and fertilization capacity at recommended safe concentrations and that it is metabolized in male reproductive tissues. This pesticide places the reproductive health of exposed people at risk, suggesting the need to reevaluate its toxicity.
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Affiliation(s)
- Ángel Ramos-Flores
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav)
| | - Israel Camacho-Hernández
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav)
| | - Adolfo Sierra-Santoyo
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav)
| | | | | | | | | | - Isabel Hernández-Ochoa
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav)
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11
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Kumari S, Dcunha R, Sanghvi SP, Nayak G, Kalthur SG, Raut SY, Mutalik S, Siddiqui S, Alrumman SA, Adiga SK, Kalthur G. Organophosphorus pesticide quinalphos (Ekalux 25 E.C.) reduces sperm functional competence and decreases the fertilisation potential in Swiss albino mice. Andrologia 2021; 53:e14115. [PMID: 34014595 DOI: 10.1111/and.14115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 04/13/2021] [Accepted: 04/22/2021] [Indexed: 12/14/2022] Open
Abstract
Quinalphos (QP) is one of the most commonly used organophosphate pesticide for agriculture. In this study, adult Swiss albino male mice were orally administered with 0.25, 0.5 and 1.0 mg/kg of QP (Ekalux 25 E.C.) for ten consecutive days and the reproductive function was assessed at 35 and 70 days after QP treatment. At highest dose (1.0 mg/kg), QP exposure resulted in significant decrease in motility and increase in sperm head defects and DNA damage. Pharmacokinetic data showed a threefold increase in concentration of QP in the testis as compared to serum. QP was detectable in testes even after 24 hr of administration indicating slow clearance from tissue. In addition, high oestradiol, low testosterone level with a parallel increase in aromatase and cytochrome P450 transcript levels was observed. Significant decrease in fertilisation, lower blastocyst rate and poor blastocyst quality was observed when spermatozoa collected from QP exposed mice were subjected to in vitro fertilisation. In conclusion, exposure of QP to male mice decreases the sperm functional competence and fertilising ability, which appears to be mediated through elevated oxidative stress and altered steroidogenesis in testes.
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Affiliation(s)
- Sandhya Kumari
- Department of Clinical Embryology, Central Research Lab, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Reyon Dcunha
- Department of Clinical Embryology, Central Research Lab, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Sahil Piyush Sanghvi
- Department of Clinical Embryology, Central Research Lab, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Guruprasad Nayak
- Department of Clinical Embryology, Central Research Lab, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Sneha Guruprasad Kalthur
- Department of Anatomy, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Sushil Yadaorao Raut
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Sazada Siddiqui
- Department of Biology, College of Sciences, King Khalid University, Kingdom of Saudi Arabia, Abha
| | - Sulaiman A Alrumman
- Department of Biology, College of Sciences, King Khalid University, Kingdom of Saudi Arabia, Abha
| | - Satish Kumar Adiga
- Department of Clinical Embryology, Central Research Lab, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Guruprasad Kalthur
- Department of Clinical Embryology, Central Research Lab, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
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Bae JW, Kwon WS. Piperonyl butoxide, a synergist of pesticides can elicit male-mediated reproductive toxicity. Reprod Toxicol 2021; 100:120-125. [PMID: 33515694 DOI: 10.1016/j.reprotox.2021.01.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/10/2021] [Accepted: 01/22/2021] [Indexed: 01/15/2023]
Abstract
A semi-synthetic methylenedioxyphenyl compound piperonyl butoxide (PBO) has been used as a ubiquitous synergist to increase the insecticidal effect of pesticides for agricultural and household use. Despite previously demonstrated effects of PBO, the detailed mechanism of PBO in spermatozoa and reproductive toxic effects on male germ cells have not been fully elucidated. Therefore, this study evaluated the effects of PBO on various sperm functions during capacitation and clarified the mechanisms of reproductive toxic effects on male fertility at different concentrations of PBO (0.1, 1, 10, and 100 μM). Sperm motility and kinematics were assessed using computer-assisted sperm analysis and the status of capacitation was evaluated using combined H33258/chlortetracycline (CTC) staining. Intracellular adenosine triphosphate (ATP) and cell viability levels were also measured. In addition, protein kinase A (PKA) activity and protein tyrosine phosphorylation were evaluated. In addition, in vitro fertilization was performed to determine the effects of PBO on cleavage and blastocyst formation rates. We found that PBO significantly decreased sperm motility, kinematics, and acrosome-reacted and capacitated spermatozoa. In addition, PBO suppressed the intracellular ATP levels and directly affected cell viability. Moreover, PBO detrimentally decreased the activation of PKA and altered the levels of tyrosine-phosphorylated proteins. Consequently, cleavage and blastocyst formation rates were significantly reduced in a dose-dependent manner. In line with our observations, the synergist of pesticides PBO may directly and/or indirectly cause disorder in male fertility. Hence, we suggest that careful attention is made to consider reproductive toxicity when using PBO as a synergist.
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Affiliation(s)
- Jeong-Won Bae
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do, 37224, Republic of Korea
| | - Woo-Sung Kwon
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do, 37224, Republic of Korea; Department of Animal Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do, 37224, Republic of Korea.
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13
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Toxicokinetics of temephos after oral administration to adult male rats. Arch Toxicol 2021; 95:935-947. [PMID: 33471133 DOI: 10.1007/s00204-021-02975-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 01/04/2021] [Indexed: 02/06/2023]
Abstract
Temephos (Tem) is the larvicide of choice to control mosquito transmission of dengue, Zika, and chikungunya. The toxicokinetic and toxicological information of temephos is very limited. The aim of this work was to determine the toxicokinetics and dosimetry of temephos and its metabolites. Male Wistar rats were orally administered temephos (300 mg/kg) emulsified with saline solution and sacrificed over time after dosing. Temephos and its metabolites were analyzed in blood and tissues by high performance liquid chromatography-diode array detector. At least eleven metabolites were detected, including temephos-sulfoxide (Tem-SO), temephos-oxon (Tem-oxon), temephos-oxon-sulfoxide (Tem-oxon-SO), temephos-oxon-SO-monohydrolyzed (Tem-oxon-SO-OH), 4,4´-thiodiphenol, 4,4´-sulfinyldiphenol, and 4,4´-sulfonyldiphenol or bisphenol S (BPS). The mean blood concentrations of temephos were fitted to a one-compartment model for kinetic analysis. At 2 h, the peak was reached (t1/2 abs = 0.38 h), and only trace levels were detected at 36 h (t1/2 elim = 8.6 h). Temephos was detected in all tissues and preferentially accumulated in fat. Temephos-sulfone-monohydrolyzed (Tem-SO2-OH) blood levels remained constant until 36 h and gradually accumulated in the kidney. Tem-oxon was detected in the brain, liver, kidney, and fat. Clearance from the liver and kidney were 7.59 and 5.52 ml/min, respectively. These results indicate that temephos is well absorbed, extensively metabolized, widely distributed and preferentially stored in adipose tissue. It is biotransformed into reactive metabolites such as Tem-oxons, Tem-dioxons, and BPS. Tem-SO2-OH, the most abundant metabolite of temephos, could be used as an exposure biomarker for toxicokinetic modeling. These results could provide critical insight into the dosimetry and toxicity of temephos and its metabolites.
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