1
|
Reis ACC, Jorge BC, Paschoalini BR, Bueno JN, Stein J, Moreira SDS, Manoel BDM, Fernandes GSA, Hisano H, Arena AC. Long-term reproductive effects of benzo(a)pyrene at environmentally relevant dose on juvenile female rats. Drug Chem Toxicol 2023; 46:906-914. [PMID: 35912572 DOI: 10.1080/01480545.2022.2105864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/22/2022] [Accepted: 07/18/2022] [Indexed: 11/03/2022]
Abstract
Since studies on the reproductive consequences after the exposure to environmentally relevant doses of Benzo(a)pyrene (BaP) during critical stages of development are scarce, this study evaluated female reproductive parameters of adult rats exposed to a low dose of BaP during the juvenile phase. Female rats (Post-natal 21) were treated with BaP (0 or 0.1 µg/kg/day; gavage) for 21 consecutive days. During the treatment, no clinical signs of toxicity were observed. Nevertheless, the ages of vaginal opening and first estrus were anticipated by the BaP-exposure. At the sexual maturity, the juvenile exposure compromised the sexual behavior, as well as the placental efficiency, follicle stimulating hormone levels, placenta histological analysis, and ovarian follicle count. A decrease in erythrocyte, platelet, and lymphocyte counts also was observed in the exposed-females. Moreover, the dose of BaP used in this study was not able to produce estrogenic activity in vivo. These data showed that juvenile BaP-exposure, at environmentally relevant dose, compromised the female reproductive system, possibly by an endocrine deregulation; however, this requires further investigation.
Collapse
Affiliation(s)
- Ana Carolina Casali Reis
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), Botucatu, Brazil
| | - Bárbara Campos Jorge
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), Botucatu, Brazil
| | - Beatriz Rizzo Paschoalini
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), Botucatu, Brazil
| | - Jéssica Nogueira Bueno
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), Botucatu, Brazil
| | - Julia Stein
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), Botucatu, Brazil
| | - Suyane da Silva Moreira
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), Botucatu, Brazil
| | - Beatriz de Matos Manoel
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), Botucatu, Brazil
| | | | | | - Arielle Cristina Arena
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), Botucatu, Brazil
- Center of Toxicological Assistance (CEATOX), Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), São Paulo, Brazil
| |
Collapse
|
2
|
Huang S, Lu Y, Li S, Zhou T, Wang J, Xia J, Zhang X, Zhou Z. Key proteins of proteome underlying sperm malformation of rats exposed to low fenvalerate doses are highly related to P53. Environ Toxicol 2021; 36:1181-1194. [PMID: 33656234 DOI: 10.1002/tox.23117] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Fenvalerate (Fen) is an endocrine disruptor, capable of interfering with the activity of estrogen and androgen. Our objective was to explore the molecular mechanisms of Fen on sperm in vivo. Adult male Sprague-Dawley rats were orally exposed to 0, 0.00625, 0.125, 2.5, 30 mg/kg/day Fen for 8 weeks. Sperm morphology, differential proteomics of sperm and testes, bioinformatic analysis, western blotting (WB), and RT-PCR were used to explore the mechanism of Fen on sperm. Data showed that low Fen doses significantly induced sperm malformations. In sperm proteomics, 47 differentially expressed (DE) proteins were enriched in biological processes (BPs) related to energy metabolism, response to estrogen, spermatogenesis; and enriched in cellular components (CCs) relating to energy-metabolism, sperm fibrous sheath and their outer dense fibers. In testicular proteomics, 56 DE proteins were highly associated with mRNA splicing, energy metabolism; and enriched in CCs relating to vesicles, myelin sheath, microtubules, mitochondria. WB showed that the expression of selected proteins was identical to their tendency in 2D gels. Literature indicates that key DE proteins in proteomic profiles (such as Trap1, Hnrnpa2b1, Hnrnpk, Hspa8, and Gapdh) are involved in P53-related processes or morphogenesis or spermatogenesis. Also, P53 mRNA and protein levels were significantly increased by Fen; bioinformatic re-analysis showed that 88.5% DE proteins and P53 formed a complex interacting network, and the key DE proteins were coenriched with P53-related BPs. Results indicate that key DE proteins of proteome underlying sperm malformations of rats exposed to low Fen doses are highly related to P53.
Collapse
Affiliation(s)
- Shaoping Huang
- Department of Histology and Embryology, Medical School, Southeast University, Nanjing, China
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Ying Lu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
- Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Suying Li
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
- Reproductive Center of Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tao Zhou
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
- Central Laboratory, Wuxi Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University, Wuxi, China
| | - Jing Wang
- Zhong Da Hospital, Southeast University, Nanjing, China
| | - Jiangyan Xia
- Zhong Da Hospital, Southeast University, Nanjing, China
| | - Xinxin Zhang
- Department of Histology and Embryology, Medical School, Southeast University, Nanjing, China
| | - Zuomin Zhou
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| |
Collapse
|
3
|
Abstract
Human and animal welfare primarily depends on the availability of food and surrounding environment. Over a century and half, the quest to identify agents that can enhance food production and protection from vector borne diseases resulted in the identification and use of a variety of pesticides, of which the pyrethroid based ones emerged as the best choice. Pesticides while improved the quality of life, on the other hand caused enormous health risks. Because of their percolation into drinking water and food chain and usage in domestic settings, humans unintentionally get exposed to the pesticides on a daily basis. The health hazards of almost all known pesticides at a variety of doses and exposure times are reported. This review provides a comprehensive summation on the historical, epidemiological, chemical and biological (physiological, biochemical and molecular) aspects of pyrethroid based insecticides. An overview of the available knowledge suggests that the synthetic pyrethroids vary in their chemical and toxic nature and pose health hazards that range from simple nausea to cancers. Despite large number of reports, studies that focused on identifying the health hazards using doses that are equivalent or relevant to human exposure are lacking. It is high time such studies are conducted to provide concrete evidence on the hazards of consuming pesticide contaminated food. Policy decisions to decrease the residual levels of pesticides in agricultural products and also to encourage organic farming is suggested.
Collapse
Affiliation(s)
| | - Suresh Yenugu
- Department of Animal Biology, University of Hyderabad, Hyderabad, India
| |
Collapse
|
4
|
Zhong M, Zhai Q, Zhang R, Yin H, Li J, Ma Z, Fang L, Zhang C, Li Y. Effect of pyrethroid pesticides on the testis of male rats: A meta-analysis. Toxicol Ind Health 2021; 37:229-239. [PMID: 33724083 DOI: 10.1177/07482337211000979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study quantitatively evaluated the effects of pyrethroid pesticides on the testis of male rats. An extensive literature search for relevant studies was conducted on PubMed, Web of Science, Excerpta Medica Database, the Chinese National Knowledge Infrastructure, and Chinese Biomedical Literature Database. Pooled standard mean difference with corresponding 95% confidence interval was calculated via the random-effects model. I 2 was used to evaluate heterogeneity among studies. A total of 19 studies were included for analysis in our study. Results indicated that the sperm count of rats exposed to fenvalerate was lower than that of rats in control groups. The sperm count, sperm motility, and testosterone level of rats exposed to cypermethrin and deltamethrin were lower than those of rats in control groups. Moreover, the sperm morphology of rats exposed to these pyrethroid pesticides was abnormal compared with that of rats in control groups. The present meta-analysis indicates that pyrethroid pesticides decrease rat sperm count, sperm motility, and testosterone level and cause abnormal rat sperm morphology. Therefore, pyrethroid pesticides can damage the testis of male rats.
Collapse
Affiliation(s)
- Mingqing Zhong
- School of Public Health, 372527Weifang Medical University, Weifang, China
| | - Qingfeng Zhai
- School of Public Health, 372527Weifang Medical University, Weifang, China
| | - Ruoyu Zhang
- School of Public Health, 372527Weifang Medical University, Weifang, China
| | - Haoyu Yin
- School of Public Health, 372527Weifang Medical University, Weifang, China
| | - Jiaxuan Li
- School of Public Health, 372527Weifang Medical University, Weifang, China
| | - Zhiyuan Ma
- School of Public Health, 372527Weifang Medical University, Weifang, China
| | - Lei Fang
- School of Public Health, 372527Weifang Medical University, Weifang, China
| | - Chenyuan Zhang
- Department of Neonatology, Maternal and Child health Hospital, 372527Weifang Medical University, Weifang, China
| | - Yuanyuan Li
- Department of Neonatology, Maternal and Child health Hospital, 372527Weifang Medical University, Weifang, China
| |
Collapse
|
5
|
Zhang X, Zhang T, Ren X, Chen X, Wang S, Qin C. Pyrethroids Toxicity to Male Reproductive System and Offspring as a Function of Oxidative Stress Induction: Rodent Studies. Front Endocrinol (Lausanne) 2021; 12:656106. [PMID: 34122335 PMCID: PMC8190395 DOI: 10.3389/fendo.2021.656106] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/14/2021] [Indexed: 11/30/2022] Open
Abstract
Pyrethroids may be related to male reproductive system damage. However, the results of many previous studies are contradictory and uncertain. Therefore, a systematic review and a meta-analysis were performed to assess the relationship between pyrethroid exposure and male reproductive system damage. A total of 72 articles were identified, among which 57 were selected for meta-analysis, and 15 were selected for qualitative analysis. Pyrethroid exposure affected sperm count (SMD= -2.0424; 95% CI, -2.4699 to -1.6149), sperm motility (SMD=-3.606; 95% CI, -4.5172 to -2.6948), sperm morphology (SMD=2.686; 95% CI, 1.9744 to 3.3976), testis weight (SMD=-1.1591; 95% CI, -1.6145 to -0.7038), epididymal weight (SMD=-1.1576; 95% CI, -1.7455 to -0.5697), and serum testosterone level (SMD=-1.9194; 95% CI, -2.4589 to -1.3798) in the studies of rats. We found that gestational and lactational exposure to pyrethroids can reduce sperm count (SMD=1.8469; 95% CI, -2.9010 to -0.7927), sperm motility (SMD=-2.7151; 95% CI, -3.9574 to -1.4728), testis weight (SMD=-1.4361; 95% CI, -1.8873 to -0.9848), and epididymal weight (SMD=-0.6639; 95% CI, -0.9544 to -0.3733) of F1 offspring. Exposure to pyrethroids can increase malondialdehyde (SMD=3.3451; 95% CI 1.9914 to 4.6988) oxide in testes and can reduce the activities of glutathione (SMD=-2.075; 95% CI -3.0651 to -1.0848), superoxide dismutase (SMD=-2.4856; 95% CI -3.9612 to -1.0100), and catalase (SMD=-2.7564; 95% CI -3.9788 to -1.5340). Pyrethroid exposure and oxidative stress could damage male sperm quality. Gestational and lactational pyrethroid exposure affects the reproductive system of F1 offspring.
Collapse
Affiliation(s)
| | | | | | | | | | - Chao Qin
- *Correspondence: Chao Qin, ; ShangQian Wang,
| |
Collapse
|
6
|
Wang Q, Shen JY, Zhang R, Hong JW, Li Z, Ding Z, Wang HX, Zhang JP, Zhang MR, Xu LC. Effects and mechanisms of pyrethroids on male reproductive system. Toxicology 2020; 438:152460. [PMID: 32278050 DOI: 10.1016/j.tox.2020.152460] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 03/26/2020] [Accepted: 03/30/2020] [Indexed: 12/21/2022]
Abstract
Synthetic pyrethroids are used as insecticides in agriculture and a variety of household applications worldwide. Pyrethroids are widely distributed in all environmental compartments and the general populations are exposed to pyrethroids through various routes. Pyrethroids have been identified as endocrine-disrupting chemicals (EDCs) which are responsible for the male reproductive impairments. The data confirm pyrethroids cause male reproductive damages. The insecticides exert the toxic effects on male reproductive system through various complex mechanisms including antagonizing androgen receptor (AR), inhibiting steroid synthesis, affecting the hypothalamic-pituitary-gonadal (HPG) axis, acting as estrogen receptor (ER) modulators and inducing oxidative stress. The mechanisms of male reproductive toxicity of pyrethroids involve multiple targets and pathways. The review will provide further insight into pyrethroid-induced male reproductive toxicity and mechanisms, which is crucial to preserve male reproductive health.
Collapse
Affiliation(s)
- Qi Wang
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China
| | - Jun-Yu Shen
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China
| | - Rui Zhang
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China
| | - Jia-Wei Hong
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China
| | - Zheng Li
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China
| | - Zhen Ding
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China
| | - Heng-Xue Wang
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China
| | - Jin-Peng Zhang
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China
| | - Mei-Rong Zhang
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China
| | - Li-Chun Xu
- School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou, 221004, Jiangsu, China.
| |
Collapse
|
7
|
Mohamed AAR, Abdellatief SA, Khater SI, Ali H, Al-Gabri NA. Fenpropathrin induces testicular damage, apoptosis, and genomic DNA damage in adult rats: Protective role of camel milk. Ecotoxicol Environ Saf 2019; 181:548-558. [PMID: 31234069 DOI: 10.1016/j.ecoenv.2019.06.047] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 06/14/2019] [Accepted: 06/15/2019] [Indexed: 06/09/2023]
Abstract
Fenpropathrin (FNP) is a member of the synthetic pyrethroids. Herein, the present study was conducted to investigate, for the first time, the potentially harmful effects of FNP on the reproductive system of male rats. In addition, the prophylactic or concurrent influence of camel milk (CM) was assessed. Adult male rats were divided into five groups; control, vehicle control (oil), CM (2ml/rat/day), FNP (15mg/kg bwt/60 days), CM/FNP (prophylaxis) and FNP /CM (co-treated) groups. Sperm morphology, count, serum testosterone (TES), luteinizing hormone (LH) and follicle-stimulating hormone (FSH), thiobarbituric acid reactive substances (TBARS), total antioxidant capacity (TAC), superoxide dismutase (SOD), testicular enzymes, and comet assay analysis were estimated. In addition, histopathology, the ultrastructure of testicular tissue and apoptosis were evaluated. Reduced body weight and gonadosomatic index were observed in the FNP exposed group. TES, LH, FSH were markedly declined following FNP treatment. SOD and TAC concentrations were reduced while PC and TBARS were significantly elevated in FNP group indicating oxidative stress. Furthermore, FNP induced DNA damage and apoptosis in the testis which was evidenced histopathologically and by electron microscope examination. CM significantly counteracted FNP reprotoxic effects, particularly at the prophylactic routine (CM/FNP) than the co-exposure (FNP/CM) one. Conclusively, these findings verified that CM could be a potential candidate therapy against FNP reprotoxic impacts.
Collapse
Affiliation(s)
- Amany Abdel-Rahman Mohamed
- Forensic Medicine and Toxicology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt.
| | - Suhair A Abdellatief
- Pharmacology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Safaa I Khater
- Biochemistry Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Haytham Ali
- Pathology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt; Department of Animal and Veterinary Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Oman
| | - Naif A Al-Gabri
- Pathology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt; Veterinary Department, Faculty of Agriculture and Veterinary Medicine, Thamar University, Yemen
| |
Collapse
|
8
|
Xiang D, Zhong L, Shen S, Song Z, Zhu G, Wang M, Wang Q, Zhou B. Chronic exposure to environmental levels of cis-bifenthrin: Enantioselectivity and reproductive effects on zebrafish (Danio rerio). Environ Pollut 2019; 251:175-184. [PMID: 31078089 DOI: 10.1016/j.envpol.2019.04.089] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 04/07/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
Synthetic pyrethroids (SPs) are broadly used to control pests and have been widely detected in aquatic environments, prompting concern over its risk to the health of non-target organisms. The present study evaluated whether long-term (60 d) exposure to low doses (0, 20, 100, and 500 ng/L) of cis-BF enantiomers (1S-cis-BF and 1R-cis-BF) could cause reproductive endocrine disturbance to zebrafish. Exposure to 1S-cis-BF has stronger reproductive impairment effect than 1R-enantiomer, indicating that the enantioselectivity of cis-BF on fish reproduction. Significant decrease of cumulative spawning of zebrafish was observed as a result of cis-BF exposure. And the retardations of testis and ovaries development found in histopathological section were suggested to be important cause for the decreased fecundity. Cis-BF decreased the total motility of sperm but did not affect sperm density. Relatively high levels of cis-BF detected in the gonads of males and females may directly impair gametogenesis. In addition, alterations in the expression of key genes (cyp17, cyp19a and 17β-hsd) associated with reproductive endocrine pathways were correlated well with the significant changes in sex hormone contents (E2 and T) and these results may relate to gonadal development and maturation of germ cells in females or/and males which were suspected to be a likely underlying mechanism. Furthermore, the reduction of quality of F1 embryo derived from the unexposed females and exposed males (UE♀ × E♂) demonstrated that male exposure had greater adverse effects on offspring. Our results indicate that long term, low dose exposure to cis-BF can enantioselectively impair the reproduction system of fish, and induce toxicity related abnormalities in non-exposed offspring. This study has important implications for environmental risk assessment of chiral pesticides that are concurrently present in aquatic systems.
Collapse
Affiliation(s)
- Dandan Xiang
- Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China; Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization (MOA), Guangdong Province Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou, 510640, PR China
| | - Linxi Zhong
- Qiushi College of Zhenjiang University, Hangzhou, 310058, PR China
| | - Shuyuan Shen
- Qiushi College of Zhenjiang University, Hangzhou, 310058, PR China
| | - Zhuoying Song
- Qiushi College of Zhenjiang University, Hangzhou, 310058, PR China
| | - Guonian Zhu
- Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China
| | - Mengcen Wang
- Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China
| | - Qiangwei Wang
- Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China.
| | - Bingsheng Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| |
Collapse
|
9
|
Ye X, Liu J. Effects of pyrethroid insecticides on hypothalamic-pituitary-gonadal axis: A reproductive health perspective. Environ Pollut 2019; 245:590-599. [PMID: 30476888 DOI: 10.1016/j.envpol.2018.11.031] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/09/2018] [Accepted: 11/09/2018] [Indexed: 06/09/2023]
Abstract
Pyrethroids, a class of ubiquitous insecticides, have been recognized as endocrine-disrupting chemicals (EDCs). A lot of studies have implied the endocrine-disrupting effects of pyrethroids on the hypothalamic-pituitary-gonadal (HPG) axis. However, there are few review articles regarding the effects of pyrethroids on the HPG axis of mammal and human, especially new research progress made in this area. The present review sums up the effects of pyrethroids on the HPG axis-related reproductive outcomes, including epidemiological investigations based on human biomonitoring, animal studies and in vitro tests. Mechanisms have described that the endocrine-disrupting effects of pyrethroids on mammal can be mediated via the interaction with steroid receptors, the direct action on ion channels and signaling molecules. Finally, we summarize the current research gaps and suggest future directions in this topic.
Collapse
Affiliation(s)
- Xiaoqing Ye
- MOE Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; College of Medical Technology, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Jing Liu
- MOE Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Research Center for Air Pollution and Health, Zhejiang University, Hangzhou 310058, China.
| |
Collapse
|
10
|
Zhang J, Hu Y, Guo J, Pan R, Shi R, Tian Y, Zhou Y, Gao Y. Fenvalerate decreases semen quality in puberty rat through germ cell apoptosis. Andrologia 2018; 50:e13079. [DOI: 10.1111/and.13079] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 05/15/2018] [Accepted: 05/24/2018] [Indexed: 12/24/2022] Open
Affiliation(s)
- Jingjing Zhang
- Department of Environmental Health, School of Public Health; Shanghai Jiao Tong University; Shanghai China
| | - Yi Hu
- Department of Environmental Health, School of Public Health; Shanghai Jiao Tong University; Shanghai China
| | - Jingyi Guo
- Department of Environmental Health, School of Public Health; Shanghai Jiao Tong University; Shanghai China
| | - Rui Pan
- Department of Environmental Health, School of Public Health; Shanghai Jiao Tong University; Shanghai China
| | - Rong Shi
- Department of Environmental Health, School of Public Health; Shanghai Jiao Tong University; Shanghai China
| | - Ying Tian
- Department of Environmental Health, School of Public Health; Shanghai Jiao Tong University; Shanghai China
| | - Yijun Zhou
- Department of Environmental Health, School of Public Health; Shanghai Jiao Tong University; Shanghai China
| | - Yu Gao
- Department of Environmental Health, School of Public Health; Shanghai Jiao Tong University; Shanghai China
| |
Collapse
|
11
|
Arena AC, Jorge BC, Silva MC, de Barros AL, Fernandes AAH, Nóbrega RH, Martinez ERM, Cardoso CAL, Anselmo-Franci JA, Muzzi RM. Acrocomia aculeataoil: Beneficial effects on cyclophosphamide-induced reproductive toxicity in male rats. Andrologia 2018; 50:e13028. [DOI: 10.1111/and.13028] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/20/2018] [Indexed: 12/14/2022] Open
Affiliation(s)
- A. C. Arena
- Department of Morphology; Institute of Biosciences of Botucatu; Universidade Estadual Paulista; Botucatu SP Brazil
| | - B. C. Jorge
- Department of Morphology; Institute of Biosciences of Botucatu; Universidade Estadual Paulista; Botucatu SP Brazil
| | - M. C. Silva
- Department of Morphology; Institute of Biosciences of Botucatu; Universidade Estadual Paulista; Botucatu SP Brazil
| | - A. L. de Barros
- Department of Morphology; Institute of Biosciences of Botucatu; Universidade Estadual Paulista; Botucatu SP Brazil
| | - A. A. H. Fernandes
- Department of Chemistry and Biochemistry; Institute of Biosciences of Botucatu; Universidade Estadual Paulista; Botucatu SP Brazil
| | - R. H. Nóbrega
- Department of Morphology; Institute of Biosciences of Botucatu; Universidade Estadual Paulista; Botucatu SP Brazil
| | - E. R. M. Martinez
- Department of Morphology; Institute of Biosciences of Botucatu; Universidade Estadual Paulista; Botucatu SP Brazil
| | | | - J. A. Anselmo-Franci
- Department of Physiology; Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto SP Brazil
| | - R. M. Muzzi
- Federal University of Grande Dourados; Dourados MS Brazil
| |
Collapse
|
12
|
Guo Y, Shen O, Han J, Duan H, Yang S, Zhu Z, Tong J, Zhang J. Circadian rhythm genes mediate fenvalerate-induced inhibition of testosterone synthesis in mouse Leydig cells. J Toxicol Environ Health A 2017; 80:1314-1320. [PMID: 29040059 DOI: 10.1080/15287394.2017.1384148] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Fenvalerate (Fen), a widely used pesticide, is known to impair male reproductive functions by mechanisms that remain to be elucidated. Recent studies indicated that circadian clock genes may play an important role in successful male reproduction. The aim of this study was to determine the effects of Fen on circadian clock genes involved in the biosynthesis of testosterone using TM3 cells derived from mouse Leydig cells. Data demonstrated that the circadian rhythm of testosterone synthesis in TM3 cells was disturbed following Fen treatment as evidenced by changes in the circadian rhythmicity of core clock genes (Bmal1, Rev-erbα, Rorα). Further, the observed altered rhythms were accompanied by increased intracellular Ca2+ levels and modified steroidogenic acute regulatory (StAR) mRNA expression. Thus, data suggested that Fen inhibits testosterone synthesis via pathways involving intracellular Ca2+ and clock genes (Bmal1, Rev-Erbα, Rorα) as well as StAR mRNA expression in TM3 cells.
Collapse
MESH Headings
- ARNTL Transcription Factors/genetics
- ARNTL Transcription Factors/metabolism
- Animals
- Cell Line
- Circadian Rhythm/genetics
- Circadian Rhythm Signaling Peptides and Proteins/genetics
- Circadian Rhythm Signaling Peptides and Proteins/metabolism
- Insecticides/toxicity
- Leydig Cells/drug effects
- Leydig Cells/metabolism
- Male
- Mice
- Nitriles/toxicity
- Nuclear Receptor Subfamily 1, Group D, Member 1/genetics
- Nuclear Receptor Subfamily 1, Group D, Member 1/metabolism
- Nuclear Receptor Subfamily 1, Group F, Member 1/genetics
- Nuclear Receptor Subfamily 1, Group F, Member 1/metabolism
- Phosphoproteins/genetics
- Phosphoproteins/metabolism
- Pyrethrins/toxicity
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Testosterone/metabolism
Collapse
Affiliation(s)
- Yichen Guo
- a Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health , Medical College of Soochow University , Suzhou China
| | - Ouxi Shen
- a Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health , Medical College of Soochow University , Suzhou China
- b Department of Occupational Health , Suzhou Industrial Park Center for Disease Control and Prevention , Suzhou , China
| | - Jingjing Han
- a Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health , Medical College of Soochow University , Suzhou China
| | - Hongyu Duan
- a Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health , Medical College of Soochow University , Suzhou China
| | - Siyuan Yang
- a Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health , Medical College of Soochow University , Suzhou China
| | - Zhenghong Zhu
- a Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health , Medical College of Soochow University , Suzhou China
| | - Jian Tong
- a Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health , Medical College of Soochow University , Suzhou China
| | - Jie Zhang
- a Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health , Medical College of Soochow University , Suzhou China
| |
Collapse
|
13
|
Peiris DC, Dhanushka T. Low doses of chlorpyrifos interfere with spermatogenesis of rats through reduction of sex hormones. Environ Sci Pollut Res Int 2017; 24:20859-20867. [PMID: 28721614 DOI: 10.1007/s11356-017-9617-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 06/23/2017] [Indexed: 05/28/2023]
Abstract
Use of pesticides results in indirect effects on human health. We aimed to evaluate implications of toxicological effects of subchronic chlorpyrifos exposure on reproductive function in male rats. A total of 48 adult Wistar male rats were separated into four groups (n = 12). Animals were gavaged with 2.5 mg/kg (T1), 5 mg/kg (T2), or 10 mg/kg (T3) body weight of chlorpyrifos (CPF) or distilled water (control) daily for 30 days. Organ weights, epididymal sperm parameters, DNA integrity, sex hormonal (FHS and LH) levels, and alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma-glutamyl transferase (GGT), and creatinine concentrations were determined on day 31. Another two sets of (four groups/set; n = 10) animals were orally treated with the same doses of CPF, control animal groups were treated with distilled water only for 30 days, and fertility indices and blood plasma acetylcholine esterase (AchE) were determined on day 31. Exposure to CPF resulted in a significant (p < 0.05) decrease in weights of testis and epididymis. An increase in liver weight resulted in reduced sperm counts and sperm motility and an increase in sperm abnormalities. Significant reduction in serum testosterone (p < 0.01), luteinizing hormone (p < 0.05), and follicular stimulating hormone (p < 0.05) levels was evident in animals treated with the highest dose. A significant decrease in the number of viable implantation sites and pups was observed in female rats mated with the T3 (p < 0.01) and T2 (p < 0.05) males. The ALT, AST, GGT, and creatinine contents were significantly increased (p < 0.05 and p < 0.01, respectively) on CPF exposure. A significant (p < 0.01) reduction in blood plasma AchE enzyme was observed with the highest dose. Our results demonstrated that prolonged exposure of CPF induces spermatogenesis damage, possibly through interference with sex hormones and AchE enzyme resulting in reduction of fertility. Therefore, awareness programs on handling CPF (pesticides) to enhance safety warrant minimization of its hazards.
Collapse
Affiliation(s)
- Dinithi Champika Peiris
- Department of Zoology (Center for Biotechnology), University of Sri Jayewardenepura, Gangodawila, Nugegoda, 10250, Sri Lanka.
| | - Thamali Dhanushka
- Department of Zoology (Center for Biotechnology), University of Sri Jayewardenepura, Gangodawila, Nugegoda, 10250, Sri Lanka
- Environmental Management Division, Abans Environmental (Pvt.) Ltd., Colombo, 05, Sri Lanka
| |
Collapse
|
14
|
Marettova E, Maretta M, Legáth J. Effect of pyrethroids on female genital system. Review. Anim Reprod Sci 2017; 184:132-138. [PMID: 28735887 DOI: 10.1016/j.anireprosci.2017.07.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 07/08/2017] [Accepted: 07/11/2017] [Indexed: 12/31/2022]
Abstract
Pyrethroids have been associated with a range of toxicological effects on various organs in animals.Recent animal studies suggest that neurodevelopmental, reproductive, and immunological effects may result following exposure to some pyrethroids at levels below those that induce overt signs of neurotoxicity. A variety of pyrethroids and their metabolites have the potential to affect the reproductive system. Dose-dependent effects on reproduction are associated with exposure across pyrethroid types. In mammals, permethrin and tetramethrin and cypermethrin have been found to be associated with adverse effects at high doses. Fenvalerate, deltamethrin, cypermethrin, caused morphometric and structural changes in the female genital organs. These pyrethroids affect ovulation, cause atresia of follicles, decrease the number of follicular cells, oocytes and corpora lutea and induce vesicular atrophy of the endometrial glands. The potential hormonal activity of pyrethroids showed that certain pyrethroids and their metabolites have multiple effects on the endocrine system. The level of steroid hormones, such as progesterone and estradiol, was inhibited. The pyrethorids may have the potential to mimic estrogens or to inhibit estrogen action. Some metabolites of pyrethroids, in particular permethrin and cypermethrin, are more likely to interact with the cellular estrogen receptors than the parent pyrethroids. Though several pyrethroids posses low toxicity, some pyrethroids, such as deltamethrin, cypermethrin, fenvalerate and bifenthrin have showed considerable toxicity.
Collapse
Affiliation(s)
- Elena Marettova
- Department of Anatomy, Histology and Physiology, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovak Republic.
| | - Milan Maretta
- Department of Anatomy, Histology and Physiology, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovak Republic
| | - Jaroslav Legáth
- Department of Toxicology and Pharmacy, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovak Republic
| |
Collapse
|
15
|
Madhubabu G, Yenugu S. Allethrin toxicity causes reproductive dysfunction in male rats. Environ Toxicol 2017; 32:1701-1710. [PMID: 28181402 DOI: 10.1002/tox.22394] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 12/31/2016] [Accepted: 01/02/2017] [Indexed: 06/06/2023]
Abstract
Pyrethroids are widely used for domestic and agricultural purposes and their use is increasing, especially in developing countries. Uncontrolled use of these insecticides resulted in their entry into the food chain thereby causing toxicity to different organ systems. Allethrin is one of the widely used pyrethroids, but its toxicological effects are underreported when compared to other pyrethroids. Further, its effects on the male reproductive tract remain uncharacterized. In this study, its toxicity on the male reproductive tract was evaluated by administering 25-150 mg/kg body weight allethrin to adult rats for 60 days. The mRNA expression of factors that are important in spermatogenesis (Scf, c-Kit, Hsf2, Ovol1, Brdt, Kdm3A, Ybx-2, and Grth) and steroidogenesis (StAR, 3β-HSD, 17β-HSD) was significantly downregulated. Decreased levels of testosterone, reduced sperm count and daily sperm production was also observed due to allethrin toxicity. However, sperm quality parameters assessed by computer-assisted sperm analyzer were not affected. Spermatozoa obtained from allethrin-treated rats failed to undergo acrosome reaction. Results of this study indicate that allethrin affects spermatogenesis and sperm function, thus lending further support to the growing evidence of its toxicity.
Collapse
Affiliation(s)
- Golla Madhubabu
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Suresh Yenugu
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India
| |
Collapse
|
16
|
Han J, Ji C, Guo Y, Yan R, Hong T, Dou Y, An Y, Tao S, Qin F, Nie J, Ji C, Wang H, Tong J, Xiao W, Zhang J. Mechanisms underlying melatonin-mediated prevention of fenvalerate-induced behavioral and oxidative toxicity in zebrafish. J Toxicol Environ Health A 2017; 80:1331-1341. [PMID: 29144200 DOI: 10.1080/15287394.2017.1384167] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The neurotoxic effects attributed to the pesticide fenvalerate (FEN) are well-established. The aim of this study was to determine whether melatonin (MLT) was able to protect against FEN-induced behavior, oxidative stress, apoptosis, and neurogenesis using zebrafish (Danio rerio) model. Zebrafish exposed to 100 μg/L FEN for 120 h exhibited decreased swimming activity accompanied by downregulated expression of neurogenesis-related genes (Dlx2, Shha, Ngn1, Elavl3, and Gfap), suggesting that neurogenesis were impaired. In addition, FEN exposure significantly elevated oxidative stress as evidenced by increased malondialdehyde levels, as well as activities of Cu/Zn superoxide dismutase (Cu/Zn SOD), catalase, and glutathione peroxidase. Acridine orange staining demonstrated that embryos treated with FEN for 120 h significantly enhanced apoptosis mainly in the brain. FEN also produced upregulation of the expression of the pro-apoptotic genes (Bax, Fas, caspase 8, caspase 9, and caspase 3) and decreased expression of the anti-apoptotic gene Bcl-2. MLT significantly attenuated the FEN-mediated oxidative stress, modulated apoptotic-regulating genes, and diminished apoptotic responses. Further, MLT blocked the FEN-induced effects on swimming behavior as well as on neurogenesis-related genes. In conclusion, MLT protected against FEN-induced developmental neurotoxicity and apoptosis by inhibiting pesticide-mediated oxidative stress in zebrafish.
Collapse
Affiliation(s)
- Jingjing Han
- a School of Public Health , Medical College of Soochow University , Suzhou China
| | - Cheng Ji
- d Center for Circadian Clocks , Soochow University , Suzhou , Jiangsu , China
- e School of Biology and Basic Medical Sciences, Medical College , Soochow University , Suzhou , China
| | - Yichen Guo
- a School of Public Health , Medical College of Soochow University , Suzhou China
- b Department of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Genetic Diseases , Suzhou , China
| | - Rui Yan
- a School of Public Health , Medical College of Soochow University , Suzhou China
- b Department of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Genetic Diseases , Suzhou , China
| | - Ting Hong
- a School of Public Health , Medical College of Soochow University , Suzhou China
| | - Yuanyan Dou
- a School of Public Health , Medical College of Soochow University , Suzhou China
| | - Yan An
- a School of Public Health , Medical College of Soochow University , Suzhou China
| | - Shasha Tao
- a School of Public Health , Medical College of Soochow University , Suzhou China
| | - Fenju Qin
- c Department of Biological Science and Technology , Suzhou University of Science and Technology , Suzhou China
| | - Jihua Nie
- a School of Public Health , Medical College of Soochow University , Suzhou China
| | - Chen Ji
- d Center for Circadian Clocks , Soochow University , Suzhou , Jiangsu , China
| | - Han Wang
- d Center for Circadian Clocks , Soochow University , Suzhou , Jiangsu , China
- e School of Biology and Basic Medical Sciences, Medical College , Soochow University , Suzhou , China
| | - Jian Tong
- a School of Public Health , Medical College of Soochow University , Suzhou China
- b Department of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Genetic Diseases , Suzhou , China
| | - Wei Xiao
- a School of Public Health , Medical College of Soochow University , Suzhou China
| | - Jie Zhang
- a School of Public Health , Medical College of Soochow University , Suzhou China
- b Department of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Genetic Diseases , Suzhou , China
| |
Collapse
|
17
|
de Barros AL, Bae JH, Borges CS, Rosa JL, Cavariani MM, Silva PV, Pinheiro PFF, Anselmo-Franci JA, Arena AC. Perinatal exposure to insecticide fipronil: effects on the reproductive system in male rats. Reprod Fertil Dev 2017; 29:1130-1143. [DOI: 10.1071/rd15517] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 03/12/2016] [Indexed: 12/26/2022] Open
Abstract
Fipronil is an insecticide widely used in agriculture, veterinary medicine and public health that has recently been listed as a potential endocrine disrupter. In the present study we evaluated the effects of perinatal exposure to fipronil during the period of sexual brain differentiation and its later repercussions on reproductive parameters in male rats. Pregnant rats were exposed (via gavage) to fipronil (0.03, 0.3 or 3 mg kg–1) from Gestational Day 15 until Postnatal Day 7. Fipronil exposure did not compromise the onset of puberty. In adulthood, there was no effect on organ weight or sperm production. Furthermore, there were no adverse effects on the number of Sertoli cells per seminiferous tubule, testicular and epididymal histomorphometry or histopathology or expression patterns of androgen receptor in the testis. Similarly, no changes were observed in the sexual behaviour or hormone levels. However, in rats exposed to fipronil, changes in sperm motility were observed, with a decrease in motile spermatozoa and an increase in non-mobile spermatozoa, which can compromise sperm quality in these rats. Perinatal exposure to fipronil has long-term effects on sperm parameters, and the epididymis can be a target organ. Additional studies should be undertaken to identify the mechanisms by which fipronil affects sperm motility.
Collapse
|
18
|
Dohlman TM, Jahnke MM, West JK, Phillips PE, Gunn PJ. Effects of label-dose permethrin administration in yearling beef cattle: I. Reproductive function and embryo quality of superovulated heifers. Theriogenology 2016; 85:1528-1533. [DOI: 10.1016/j.theriogenology.2015.10.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 10/05/2015] [Accepted: 10/06/2015] [Indexed: 11/30/2022]
|
19
|
de Barros AL, Cavalheiro GF, de Souza AVM, Traesel GK, Anselmo-Franci JA, Kassuya CAL, Arena AC. Subacute toxicity assessment of diflubenzuron, an insect growth regulator, in adult male rats. Environ Toxicol 2016; 31:407-14. [PMID: 25266294 DOI: 10.1002/tox.22054] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 09/12/2014] [Accepted: 09/13/2014] [Indexed: 05/28/2023]
Abstract
Diflubenzuron (DFB), an insecticide and acaricide insect growth regulator, can be used in agriculture against insect predators and in public health programs, to control insects and vectors, mainly Aedes aegypti larvae. Due to the lack of toxicological assessments of this compound, the objective of the present study was to evaluate the toxicological effects of subacute exposure to the DFB insecticide in adult male rats. Adult male rats were exposed (gavage) to 0, 2, 4, or 8 mg/kg of DFB for 28 days. No clinical signs of toxicity were observed in the DFB-treated animals of the experimental groups. However, there was an increase in serum levels of alanine aminotransferase in the group that received 8 mg/kg/DFB/day and urea at doses of 4 and 8 mg/kg/DFB/day, without altering other biochemical or hematological parameters. The subacute exposure to the lowest dose of DFB caused significant decrease in testis weight, daily sperm production, and in number of sperm in the epididymis in relation to the control group. However, no alterations were observed in the sperm morphology, testicular, epididymis, liver and kidney histology, or testosterone levels. These findings unveiled the hazardous effects of DFB on male reproduction after the subacute exposure and special attention should be addressed to the effects of low doses of this pesticide.
Collapse
Affiliation(s)
- Aline Lima de Barros
- School of Health Sciences, Federal University of Grande Dourados (UFGD), Dourados, Mato Grosso do Sul, Brazil
| | - Gabriela Finoto Cavalheiro
- School of Health Sciences, Federal University of Grande Dourados (UFGD), Dourados, Mato Grosso do Sul, Brazil
| | | | - Giseli Karenina Traesel
- School of Health Sciences, Federal University of Grande Dourados (UFGD), Dourados, Mato Grosso do Sul, Brazil
| | - Janete A Anselmo-Franci
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | | | - Arielle Cristina Arena
- School of Health Sciences, Federal University of Grande Dourados (UFGD), Dourados, Mato Grosso do Sul, Brazil
- Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| |
Collapse
|
20
|
Dohlman TM, Phillips PE, Madson DM, Clark CA, Gunn PJ. Effects of label-dose permethrin administration in yearling beef cattle: I. Bull reproductive function and testicular histopathology. Theriogenology 2016; 85:1534-1539. [PMID: 27020401 DOI: 10.1016/j.theriogenology.2016.02.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 02/15/2016] [Accepted: 02/16/2016] [Indexed: 11/18/2022]
Abstract
Pyrethroid administration to a wide variety of laboratory animals has been shown to cause detrimental effects on male fertility, including sperm quality, by means of endocrine disruption. The objective of this experiment was to study the effects of a commercial, permethrin-containing pour-on product on reproductive variables and testicular histopathology of yearling beef bulls. Black Angus bulls (n = 60; aged 369 ± 17 days; 511 ± 33 kg; 6.2 ± 0.5 body condition scores) were assigned to either (1) saline control (CON) or (2) permethrin pour-on administered at label dose (PYR). Blood samples were collected, and industry standard breeding soundness examinations (BSE), via electroejaculation, were performed on all bulls at 5 days before and 14 days after treatment. Progressive sperm motility and eosin-nigrosin-stained sperm were analyzed using high-power phase-contrast microscopy. Plasma testosterone concentrations were analyzed via radioimmunoassay. Bulls were slaughtered at 34 days, and one testicle per bull was randomly collected for histologic examination. Change in sperm motility between BSEs was not different because of treatment; sperm morphology however improved across treatments, but PYR bulls had less improvement in percent of head (P < 0.001) sperm abnormalities compared to CON, resulting in less improvement of primary abnormalities (P = 0.04). Nonetheless, morphological differences did not change the overall outcome for satisfactory breeder status. Change in testosterone concentration did not differ because of treatment. Histopathologic examination identified that testicular degeneration and tubule diameter did not differ as a result of treatment. It should be noted, however, that degeneration score (higher score having more degeneration) was positively correlated with primary abnormalities (P < 0.01; r = 0.35) and negatively correlated with normal sperm cells (P < 0.001; r = -0.43). In summary, these data indicate that a single use of permethrin at label dose in yearling Angus bulls results in minimal detrimental effects on sperm morphology but not to a degree that impacts the ability of bulls to pass a standard BSE.
Collapse
Affiliation(s)
- Tyler M Dohlman
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Patrick E Phillips
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Darin M Madson
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Christopher A Clark
- Armstrong Research and Demonstration Farm, Iowa State University, Lewis, Iowa, USA
| | - Patrick J Gunn
- Department of Animal Science, Iowa State University, Ames, Iowa, USA.
| |
Collapse
|
21
|
de Barros AL, Rosa JL, Cavariani MM, Borges CS, Villela e Silva P, Bae JH, Anselmo-Franci JA, Cristina Arena A. In utero and lactational exposure to fipronil in female rats: Pregnancy outcomes and sexual development. J Toxicol Environ Health A 2016; 79:266-73. [PMID: 27074097 DOI: 10.1080/15287394.2016.1149132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Fipronil, a phenylpyrazole insecticide, is used in agriculture, veterinary medicine, and public health. Because this insecticide is considered a potential endocrine disruptor, the aim of this study was to examine the influence of perinatal exposure to fipronil on neonatal female reproductive system development. Pregnant rats were exposed (via gavage) daily to fipronil (0.03, 0.3, or 3 mg/kg) from gestational day 15 to day 7 after birth, and effects on the reproductive functions assessed on postnatal day (PND) 22. No signs of maternal toxicity were observed during daily treatment with fipronil. Perinatal exposure to the highest dose of fipronil (3 mg/kg) delayed the age of vaginal opening (VO) and first estrus without markedly affecting the anogenital distance (AGD). Further, exposure to 0.3 mg/kg fipronil produced a significantly shorter estrus cycle and reduced number of cycles during the period of evaluation. However, the other reproductive parameters analyzed, including fertility, hormone levels, sexual behavior, and histology of ovaries and uterus, displayed no marked alterations. In this experimental model, fipronil interfered with development of neonatal female reproductive system as evidenced by delay in VO and estrus cycle alterations without apparent significant effects on fertility. Further studies are needed to identify the mechanisms of action associated with the observed female reproductive system changes.
Collapse
Affiliation(s)
- Aline Lima de Barros
- a Department of Morphology , Institute of Biosciences of Botucatu, Univ Estadual Paulista (UNESP)-Botucatu , São Paulo State , Brazil
| | - Josiane Lima Rosa
- a Department of Morphology , Institute of Biosciences of Botucatu, Univ Estadual Paulista (UNESP)-Botucatu , São Paulo State , Brazil
| | - Marília Martins Cavariani
- a Department of Morphology , Institute of Biosciences of Botucatu, Univ Estadual Paulista (UNESP)-Botucatu , São Paulo State , Brazil
| | - Cibele Santos Borges
- a Department of Morphology , Institute of Biosciences of Botucatu, Univ Estadual Paulista (UNESP)-Botucatu , São Paulo State , Brazil
| | - Patrícia Villela e Silva
- a Department of Morphology , Institute of Biosciences of Botucatu, Univ Estadual Paulista (UNESP)-Botucatu , São Paulo State , Brazil
| | - Julie Heejoo Bae
- a Department of Morphology , Institute of Biosciences of Botucatu, Univ Estadual Paulista (UNESP)-Botucatu , São Paulo State , Brazil
| | - Janete Aparecida Anselmo-Franci
- b Department of Physiology , Ribeirão Preto Medical School, University of São Paulo (USP) , Ribeirão Preto , São Paulo , Brazil
| | - Arielle Cristina Arena
- a Department of Morphology , Institute of Biosciences of Botucatu, Univ Estadual Paulista (UNESP)-Botucatu , São Paulo State , Brazil
| |
Collapse
|
22
|
Abstract
Resmethrin preferentially binds to the G–C rich region of the ctDNA groove, and the UV-vis spectral matrix is decomposed by MCR-ALS.
Collapse
Affiliation(s)
- Mo Tao
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Chunhong Xiong
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Junhui Pan
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| |
Collapse
|
23
|
Madhubabu G, Yenugu S. Allethrin induced toxicity in the male reproductive tract of rats contributes to disruption in the transcription of genes involved in germ cell production. Environ Toxicol 2014; 29:1330-1345. [PMID: 23595975 DOI: 10.1002/tox.21864] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 03/12/2013] [Accepted: 03/16/2013] [Indexed: 06/02/2023]
Abstract
Pyrethroids are known to be neurotoxic. However, their toxic effects including that of allethrin on the male reproductive tract are not elucidated. Adult male rats were treated orally with 25, 50, 100, and 150 mg/kg body weight allethrin every day for 60 days. Lipid peroxidation was increased (p < 0.001) in the caput, cauda, and testes. Nitric oxide production was increased (p < 0.001) in the caput, but unaltered in the cauda and testes. The activities of catalase, glutathione peroxidase, glutathione-S-transferase, and superoxide dismutase were decreased in the caput and cauda where as a decrease was observed in the testis obtained from allethrin treated rats. In the epididymides and testes, damage to tubular architecture, congestion, degeneration of epithelial cell lining, intestinal edema, and presence of dead or degenerating spermatids were observed in a dose dependent manner. The expression profile of genes involved in spermatogenesis (Tgf-beta1), sperm maturation (Spag11e), and sperm function (Defb22) were reduced (p < 0.001) in allethrin rats. The expression of p53 gene was decreased and increased phosphorylation of MAPK (p42/p44) expression was observed the male reproductive tract tissues of allethrin treated rats. Although earlier studies have reported the effects of allethrin inhalation because of the use of mosquito coils and vaporizers, our results for the first time prove that oral exposure to allethrin could affect fertility and may contribute to deregulation of cell cycle in the male reproductive tract.
Collapse
Affiliation(s)
- Golla Madhubabu
- Department of Animal Sciences, University of Hyderabad, Hyderabad, 500046, Andhra Pradesh, India
| | | |
Collapse
|
24
|
Radwan M, Jurewicz J, Wielgomas B, Sobala W, Piskunowicz M, Radwan P, Hanke W. Semen Quality and the Level of Reproductive Hormones After Environmental Exposure to Pyrethroids. J Occup Environ Med 2014; 56:1113-9. [DOI: 10.1097/jom.0000000000000297] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
25
|
Imai K, Yoshinaga J, Yoshikane M, Shiraishi H, Mieno MN, Yoshiike M, Nozawa S, Iwamoto T. Pyrethroid insecticide exposure and semen quality of young Japanese men. Reprod Toxicol 2013; 43:38-44. [PMID: 24189267 DOI: 10.1016/j.reprotox.2013.10.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 10/17/2013] [Accepted: 10/24/2013] [Indexed: 11/29/2022]
Abstract
The present study aimed at assessing the relationship between exposure to pyrethroid insecticides and semen quality in 323 university students recruited in a population-based manner in Metropolitan Tokyo. Urinary concentrations of pyrethroid insecticide metabolite, 3-phenoxybenzoic acid (3-PBA), were measured by LC/MS/MS and semen parameters were measured by following internationally harmonized protocols. Median urinary 3-PBA concentration was 0.641 ng/mL (specific gravity-adjusted, n=322). Median values of semen volume, sperm concentration, motility, total number of sperm, and total number of motile sperm were 2.5 mL, 56×10(6)/mL, 61%, 141×10(6), and 82×10(6), respectively. Urinary concentration of 3-PBA was not selected as significant in multiple regression models indicating, in contrast to previous findings, that environmental exposure to pyrethroid insecticides did not affect semen quality. This inconsistency may be related to exposure to different pyrethroid insecticides and/or levels of exposure as well as to survey design (hospital- vs population-based subject recruitment).
Collapse
Affiliation(s)
- Kanako Imai
- Department of Environmental Studies, University of Tokyo, Kashiwa, Chiba 277-8563, Japan
| | - Jun Yoshinaga
- Department of Environmental Studies, University of Tokyo, Kashiwa, Chiba 277-8563, Japan.
| | - Mitsuha Yoshikane
- Department of Environmental Studies, University of Tokyo, Kashiwa, Chiba 277-8563, Japan
| | - Hiroaki Shiraishi
- National Institute for Environmental Studies, Tsukuba, Ibaraki 305-8563, Japan
| | - Makiko Naka Mieno
- Centre for Information, Jichi Medical University, Shimotsuke, Tchigi 329-0498, Japan
| | - Miki Yoshiike
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Kanagawa 216-8511, Japan
| | - Shiari Nozawa
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Kanagawa 216-8511, Japan
| | - Teruaki Iwamoto
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Kanagawa 216-8511, Japan; Center for Infertility and IVF, International University of Health and Welfare Hospital, Nasushiobara, Tochigi 329-2763, Japan
| |
Collapse
|
26
|
Abstract
Fenvalerate (Fen), a synthetic pyrethroid insecticide, has been shown to have adverse effects on male reproductive system. Thus, the aim of the present study was to elucidate whether these adverse effects are passed from exposed male mice to their offspring. Adult male mice received Fen (10 mg/kg) daily for 30 days and mated with untreated females to produce offspring. Fenvalerate significantly changed the methylation status of angiotensin I-converting enzyme (Ace), forkhead box O3 (Foxo3a), huntingtin-associated protein 1 (Hap1), nuclear receptor subfamily 3 (Nr3c2), promyelocytic leukemia (Pml), and Prostaglandin F2 receptor negative regulator (Ptgfrn) genes in paternal mice sperm genomic DNA. Further, Fen significantly increased sperm abnormalities; serum testosterone and estradiol-17ß level in adult male (F0) and their male offspring (F1). Further, paternal Fen treatment significantly increased the length of estrous cycle, serum estradiol-17ß concentration in estrus, and progesterone levels in diestrus in female offspring (F1). These findings suggest that adverse effects of paternal Fen exposure on reproductive functions can be seen not only in treated males (F0) but also in their offsprings.
Collapse
Affiliation(s)
- Dong Xia
- 1Institute of Animal Husbandry & Veterinary Sciences, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Liu J, Zhang Q, Zhang W, Ding X, Hu X, Zhao F, Li P. Development of a fluorescence-linked immunoassay based on quantum dots for fenvalerate. FOOD AGR IMMUNOL 2013. [DOI: 10.1080/09540105.2012.749220] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
28
|
Gao X, Wang Q, Wang J, Wang C, Lu L, Gao R, Huan F, Dixon D, Xiao H. Expression of calmodulin in germ cells is associated with fenvalerate-induced male reproductive toxicity. Arch Toxicol 2012; 86:1443-51. [PMID: 22437841 DOI: 10.1007/s00204-012-0825-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2011] [Accepted: 02/27/2012] [Indexed: 01/31/2023]
Abstract
Exposure to fenvalerate was demonstrated to be toxic to the male reproductive system. Our previous data revealed that intracellular calcium plays an important role in regulating the above toxicity, through actions on both T-type calcium channels and endoplasmic reticulum calcium signals. The present study explored the effects of fenvalerate on the expression of calmodulin in mouse testis and GC-2spd(ts) cells, and its association with fenvalerate-induced male reproductive toxicity. Male mice were subjected to different doses (3.71, 18.56, 37.12, 92.81 mg/kg bw) of fenvalerate or vehicle control for 4 weeks. Expression of calmodulin was determined by real-time polymerase chain reaction (PCR) and Western blot analysis in mouse testis. Similar approaches were utilized in GC-2spd(ts) cells cultured with 5 μM fenvalerate at different time points. In the in vivo study, all mice survived through the entire 4 weeks. Administration of fenvalerate resulted in a dose-dependent reduction in testis weight/body weight, sperm motility, and increased head abnormality rate. By histological staining, mice treated with fenvalerate at higher doses showed dilated seminiferous tubules and disturbed arrangement of spermatogenic cells. Meanwhile, both mRNA and protein expression of calmodulin were significantly increased in the testes of mice exposed to fenvalerate compared to control mice. Moreover, in the in vitro study, 5 μM fenvalerate significantly increased the expression of calmodulin at the mRNA and protein levels in GC-2spd(ts) cells after 8 h of incubation and sustained these levels for at least 24 h. Collectively, these data suggested that enhanced expression of calmodulin correlates with male reproductive damage induced by fenvalerate.
Collapse
Affiliation(s)
- Xiaohua Gao
- Department of Toxicology and Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 210029, Jiangsu, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Abstract
OBJECTIVES Continuous inhalation of allethrin-based mosquito coil smoke may affect fertility, an aspect that has not received much attention. In this study, we attempt to understand the harmful effects on the male reproductive system caused by continuous exposure to allethrin-based mosquito coil smoke. METHODS Adult Wistar rats were allowed to inhale mosquito coil smoke for 15-180 days, and male reproductive tract tissues (caput, cauda, and testes) were collected. Using standard biochemical techniques, changes in oxidative stress (lipid peroxidation) and antioxidant status was measured. Histopathological analyses were carried out to assess pathomorphological damage in the caput, cauda, and testis. Real-time polymerase chain reaction was carried out to determine the expression pattern of the stress-response gene, p53, and the spermatogenic factors c-Kit, Scf, and Tgf-β1. RESULTS In rats exposed to allethrin-based mosquito coil smoke for 15-180 days, compared to the unexposed controls, lipid peroxidation was increased in the cauda and testes. The activity of antioxidant enzymes remained largely unchanged in the all the tissues analyzed. Histopathological analyses revealed loss of tubule architecture, epithelial cell disruption, increase in lumen size, interstitial edema, and presence of dead spermatozoa. p53 gene expression was differentially altered in the epididymis and testes. The expression of spermatogenic factors, namely, stem cell factor and its ligand c-Kit was unaltered though decreased levels of Tgf-β1 were observed. CONCLUSION Results of this study demonstrate that prolonged exposure to allethrin-based mosquito coil smoke could lead to oxidative stress and compromise germ cell production.
Collapse
Affiliation(s)
- Golla Madhubabu
- Department of Animal Sciences, University of Hyderabad, Hyderabad, India
| | | |
Collapse
|
30
|
Qu J, Fei J, Hong X, Chen J, Gu A, Sun H, Xu X, Song L, Wang S, Wang X. Involvement of IGF-I signaling pathway in the regulation of steroidogenesis in mouse Leydig cells treated with fenvalerate. Toxicology 2012; 292:151-5. [DOI: 10.1016/j.tox.2011.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 12/08/2011] [Accepted: 12/12/2011] [Indexed: 11/22/2022]
|
31
|
Guerra MT, de Toledo FC, Kempinas WDG. In utero and lactational exposure to fenvalerate disrupts reproductive function in female rats. Reprod Toxicol 2011; 32:298-303. [DOI: 10.1016/j.reprotox.2011.08.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Revised: 06/27/2011] [Accepted: 08/05/2011] [Indexed: 10/17/2022]
|
32
|
Zhao XF, Wang Q, Ji YL, Wang H, Liu P, Zhang C, Zhang Y, Xu DX. Fenvalerate induces germ cell apoptosis in mouse testes through the Fas/FasL signaling pathway. Arch Toxicol 2011; 85:1101-8. [DOI: 10.1007/s00204-011-0654-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Accepted: 01/13/2011] [Indexed: 10/18/2022]
|
33
|
|
34
|
Jiang J, Zhang D, Zhang W, Wang X, Kong Y, Zhang Q, Li P. Preparation, Identification, and Preliminary Application of Monoclonal Antibody Against Pyrethroid Insecticide Fenvalerate. ANAL LETT 2010. [DOI: 10.1080/00032711003731464] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
35
|
Zhang H, Wang H, Wang Q, Zhao XF, Liu P, Ji YL, Ning H, Yu T, Zhang C, Zhang Y, Meng XH, Xu DX. Pubertal and early adult exposure to fenvalerate disrupts steroidogenesis and spermatogenesis in mice at adulthood. J Appl Toxicol 2010; 30:369-77. [PMID: 20063364 DOI: 10.1002/jat.1507] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Fenvalerate, a pyrethroid insecticide used worldwide, has been shown to have a potentially adverse effect on male reproduction. Our earlier study showed that maternal fenvalerate exposure during lactation impaired testicular development in male offspring. In this study, we investigated the effects of pubertal and early adult exposure to fenvalerate on steroidogenesis and spermatogenesis in mice. Male mice were administered fenvalerate (60 mg/kg) by gavage daily from postnatal day 35 (PND35) to PND63. Results showed that sperm count was significantly decreased in fenvalerate-treated mice. In addition, fenvalerate markedly decreased the layers of spermatogenic cells, disturbed the array of spermatogenic cells and increased the number of apoptotic cells in testes. The adverse effects of fenvalerate on male reproduction seemed to be associated with a decrease in serum and testicular testosterone (T). Although pubertal and early adult exposure to fenvalerate had little effect on the number of Leydig cells in testes, mRNA and protein levels of testicular T biosynthetic enzymes including P450(17alpha) and P450scc were significantly downregulated in fenvalerate-treated mice. In conclusion, pubertal and early adult fenvalerate exposure induces a deleterious effect on steroidogenesis and spermatogenesis in adulthood. The decreased testicular T synthesis partially contributes to fenvalerate-induced impairment on spermatogenesis.
Collapse
Affiliation(s)
- Heng Zhang
- Department of Toxicology, Anhui Medical University, Hefei, 230032, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Giray B, Cağlayan A, Erkekoğlu P, Hincal F. Fenvalerate exposure alters thyroid hormone status in selenium- and/or iodine-deficient rats. Biol Trace Elem Res 2010; 135:233-41. [PMID: 19727571 DOI: 10.1007/s12011-009-8506-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Accepted: 08/14/2009] [Indexed: 11/26/2022]
Abstract
Considering the potential adverse effects of selenium and iodine deficiencies, and taking into account the widespread but often careless use of pyrethroid insecticides and their possible endocrine-disrupting effects, this study was undertaken to investigate the effects of fenvalerate on thyroid hormone parameters in both healthy and selenium- and/or iodine-deficient rats. Fenvalerate exposure had no effect on the TT4 levels of healthy controls but caused significant increases both in iodine deficiency (ID) and selenium plus iodine deficiency (ISeD), and a significant decrease in selenium deficiency (SeD). Dramatic increases in TT3 of all groups were observed by fenvalerate. Moreover, it caused insignificant decrease of thyroid stimulating hormone in healthy controls, no effect in SeD, and significant elevation in ID and ISeD. These results, thus, showed that the widely used pyrethroid insecticide fenvalerate has the potential to change significantly thyroid hormone parameters both in normal and deficiency states, and consequences of its thyroid status modifying effect might be of critical importance particularly in sensitive individuals and patients with thyroid dysfunction.
Collapse
Affiliation(s)
- Belma Giray
- Department of Toxicology, Faculty of Pharmacy, Hacettepe University, Ankara 06100, Turkey.
| | | | | | | |
Collapse
|
37
|
Zhang H, Wang H, Ji YL, Zhang Y, Yu T, Ning H, Zhang C, Zhao XF, Wang Q, Liu P, Xu DX. Maternal fenvalerate exposure during pregnancy persistently impairs testicular development and spermatogenesis in male offspring. Food Chem Toxicol 2010; 48:1160-9. [DOI: 10.1016/j.fct.2010.02.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Revised: 01/06/2010] [Accepted: 02/01/2010] [Indexed: 10/19/2022]
|
38
|
Perobelli JE, Martinez MF, da Silva Franchi CA, Fernandez CDB, de Camargo JLV, Kempinas WDG. Decreased sperm motility in rats orally exposed to single or mixed pesticides. J Toxicol Environ Health A 2010; 73:991-1002. [PMID: 20563933 DOI: 10.1080/15287391003751802] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The Brazilian Agency of Sanitary Vigilance (ANVISA) conducted a study that demonstrated the presence of residues of several pesticides in fresh fruits and vegetables that were available for purchase by the general populace. In order to evaluate potential adverse health effects of low-level exposure to agrochemicals, the reproductive toxicity of the pesticides dicofol, dichlorvos, permethrin, endosulfan, and dieldrin was evaluated in rats dosed with these chemicals individually or as mixtures. Sixty male Lewis rats (6 wk old, 200 x g) were randomly allocated to 8 groups: (1) control group, received basal diet; (2) 5 groups designated a to e received the diet containing each pesticide individually, at the respective effective doses: lowest-observed-adverse-effect level (LOAEL) for dieldrin and endosulfan, lowest-observed-effect level (LOEL) for dicofol, and lowest effect level (LEL) for dichlorvos and permethrin, respectively, depending on the published data; (3) effective dose group, which received a mixture of pesticides added to basal diet at the respective doses reported to produce adverse effects; and (4) low dose group, which received a pesticide mixture added to the basal diet, where each pesticide was at its no-observed-effect level (NOEL). After 8 wk of treatment, reproductive parameters were evaluated. Sperm morphology, daily sperm production (DSP), sperm transit time through the epididymis, hormonal levels, and histopathological evaluation of testis and epididymis did not differ significantly among the groups. However, sperm motility was significantly decreased in animals that received a mixture of dieldrin, endosulfan, dicofol, dichlorvos, and permethrin, as well as in the group receiving dicofol alone. Exposure to the individual pesticides endosulfan, dichlorvos, and permethrin did not markedly affect sperm motility. The impairment of sperm motility in the mixture of pesticides at the NOEL level indicates that reproductive effects not seen with individual pesticides may occur in presence of several pesticides due to an additive effect. However, the pesticide mixtures did not appear to affect DSP or spermatogenesis despite reduced sperm motility.
Collapse
Affiliation(s)
- Juliana Elaine Perobelli
- Graduate Program in Cellular and Structural Biology, Institute of Biology, State University of Campinas-UNICAMP, Sao Paulo, Brazil
| | | | | | | | | | | |
Collapse
|
39
|
Taylor JS, Thomson BM, Lang CN, Sin FYT, Podivinsky E. Estrogenic pyrethroid pesticides regulate expression of estrogen receptor transcripts in mouse Sertoli cells differently from 17beta-estradiol. J Toxicol Environ Health A 2010; 73:1075-1089. [PMID: 20574910 DOI: 10.1080/15287394.2010.482915] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Studies suggested that exposure to agricultural pesticides may affect male fertility. Pyrethroids are widely used pesticides due to their insecticidal potency and low mammalian toxicity. A recombinant yeast assay system incorporating the human alpha-estrogen receptor was used to analyze the estrogenicity of a range of readily available pyrethroid pesticides. The commercial product Ripcord Plus showed estrogenic activity by this assay. To determine whether pyrethroid compounds might exert an effect on male fertility, mouse Sertoli cells were exposed in vitro to the endogenous estrogen, 17beta-estradiol, and selected estrogenic pyrethroids. Following exposure, transcript levels of the alpha- and beta-estrogen receptors were assessed. Exposure of Sertoli cells to the pyrethroid compounds, both at high and at low published serum concentrations, affected the expression of the two estrogen receptors; however, the influence on estrogen receptor gene expression was different from the effect from exposure to 17beta-estradiol. These results from our model systems suggest that (1) estrogenic pyrethroid pesticides affect the estrogen receptors, and therefore potentially the endocrine system, in a different manner from that of endogenous estrogen, and (2) should cells in the male testes be exposed to pyrethroid pesticides, male fertility may be affected through molecular mechanisms involving estrogen receptors.
Collapse
|
40
|
Nassr ACC, Arena AC, Toledo FC, Bissacot DZ, Fernandez CDB, Spinardi-Barbisan ALT, Pires PW, Kempinas WG. Effects of gestational and lactational fenvalerate exposure on immune and reproductive systems of male rats. J Toxicol Environ Health A 2010; 73:952-964. [PMID: 20563929 DOI: 10.1080/15287391003751745] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The aim of this study was to determine the consequent reproductive developmental and immunotoxic effects due to exposure to fenvalerate during pregnancy and lactation in male offspring of maternal-treated rats. Pregnant rats were treated daily by oral gavage with 40 or 80 mg/kg of fenvalerate or corn oil (vehicle, control), from d 12 of pregnancy to d 21 of lactation. Immune and reproductive developmental effects were assessed in male offspring at postnatal days (PND) 40 (peripuberty), 60 (postpuberty), and 90 (sexual maturity). Treatment with the higher dose (80 mg/kg) resulted in convulsive behavior, hyperexcitability, and mortality in 45% of the dams. Fenvalerate was detected in the fetus due to placental transfer, as well as in pups due to breast-milk ingestion, persisting in male offspring until PND 40 even though pesticide treatment was terminated on PND 20. However, fenvalerate did not produce marked alterations in age of testicular descent to the scrotum and prepucial separation, parameters indicative of puberty initiation. In contrast, at puberty, there was a reduction in testicular weight and sperm production in male offspring of maternal-treated rats. At adulthood, the sperm counts and fertility did not differ between control and treated groups. Testosterone levels were not changed at any time during reproductive development. Similarly, no apparent exposure-related effects were detected in the histological structures of the lymphohematopoietic system. Data indicate that fenvalerate, in this experimental model, interfered with initial development of the male reproductive system, but that these effects on sperm production or fertility did not persist into adulthood. There was no apparent evidence that fenvalerate altered testosterone levels or produced a disruption in male endocrine functions.
Collapse
Affiliation(s)
- Azize C C Nassr
- Programa de Pos-graduacao em Biologia Celular e Estrutural, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Sao Paulo, Brasil
| | | | | | | | | | | | | | | |
Collapse
|