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Jorge BC, Reis ACC, Stein J, Paschoalini BR, Bueno JN, da Silva Moreira S, Godoi AR, Fioravante VC, Martinez FE, Pinheiro PFF, Arena AC. A low dose of benzo(a)pyrene during prepuberty in male rats generated immediate oxidative stress in the testes and compromised steroidogenic enzymes/proteins. Reprod Toxicol 2024; 124:108549. [PMID: 38278498 DOI: 10.1016/j.reprotox.2024.108549] [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: 10/26/2023] [Revised: 01/03/2024] [Accepted: 01/22/2024] [Indexed: 01/28/2024]
Abstract
The prepubertal period is crucial for sexual development and any alterations can interfere with the reproductive system in adulthood. The aim of this study was to evaluate how Benzo(a)pyrene (BaP) can affect the testes during the prepubertal period. Juvenile male Wistar rats were divided into a control (corn oil + DMSO) and a BaP-group (0.1 μg/kg/day), exposed to BaP for 31 days (gavage), and all parameters were evaluated on postnatal day (PND) 54. Leukocyte counts were decreased. Histological analyses of the testes revealed that height and seminiferous tubules diameters (STDs) were reduced, tubular dynamics were altered, and Leydig cell atrophy was evident in the BaP-group. The testosterone concentration was decreased while FSH levels increased within the BaP-exposed group. Steroidogenic enzymes in the testes were decreased, but steroidogenic acute regulatory protein was not altered. The expression of gstp1 and ckit enzymes was decreased. Reduced glutathione (GSH) and superoxide dismutase (SOD) were increased, whereas malondialdehyde (MDA) was decreased in the testes. In conclusion, BaP or its metabolites causes low systemic toxicity; however, it adversely influences testicular function by disrupting the hormonal axis, unbalancing testicular antioxidative, and blocking the action of the steroidogenic mechanisms.
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Affiliation(s)
- Bárbara C Jorge
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil.
| | - Ana C C Reis
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Julia Stein
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Beatriz R Paschoalini
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Jéssica N Bueno
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Suyane da Silva Moreira
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Alana R Godoi
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Vanessa C Fioravante
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Francisco E Martinez
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Patrícia F F Pinheiro
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
| | - Arielle C Arena
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil; Information and Toxicological Assistance Center (CIATOX), Institute of Biosciences of Botucatu, University Estadual Paulista (UNESP), Botucatu, São Paulo State, Brazil
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Nagaoka LT, Jorge BC, Stein J, Manoel BDM, Valente LC, de Toledo LL, de Castro TLA, Kassuya CAL, Cardoso CAL, Arena AC. Maternal-fetal safety evaluation of an aqueous extract of Casearia sylvestris leaves in rats. Birth Defects Res 2023; 115:1899-1911. [PMID: 37800320 DOI: 10.1002/bdr2.2257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND This study evaluated the maternal, embryotoxic, and teratogenic effects of the aqueous extract of Casearia sylvestris (AECS), a species listed in the Unique Health System of Brazil, and widely used for treating several conditions, such as diarrhea, wounds, pain, and ulcers. METHODS Pregnant rats were daily treated orally with 0, 175, 350, or 700 mg/kg/body weight of AECS, from gestational day (GD) 6 to 15 (organogenesis period). On GD 20, the pregnant rats were euthanized, and the litters submitted to an assessment of fetal development. RESULTS No clinical signs of toxicity were observed in the dams during the treatment. In the embryo-fetal development study, a significant increase in the basal zone height of the placenta was observed in the intermediate dose group. Furthermore, there was a significant increase in the relative anogenital distance measurement of female fetuses in the lowest and intermediate dose groups. Although no visceral abnormalities were observed in the treated-fetuses, skeletal anomalies evidenced by changes in the ossification of the sternum and the presence of supernumerary ribs were found in the intermediate and high dose groups. CONCLUSION In conclusion, the treatment with AECS during organogenesis at this dose level had detrimental effects on the normal development of fetuses.
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Affiliation(s)
- Livia Trippe Nagaoka
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista - UNESP, Botucatu, São Paulo, Brazil
| | - Bárbara Campos Jorge
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista - UNESP, Botucatu, São Paulo, Brazil
| | - Júlia Stein
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista - UNESP, Botucatu, São Paulo, Brazil
| | - Beatriz de Matos Manoel
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista - UNESP, Botucatu, São Paulo, Brazil
| | - Leticia Cardoso Valente
- College of Health Science, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil
| | - Laura Leonel de Toledo
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista - UNESP, Botucatu, São Paulo, Brazil
| | - Thiago Luis Aguayo de Castro
- Center of Studies in Natural Resources, State University of Mato Grosso do Sul (UEMS), Dourados, Mato Grosso do Sul, Brazil
| | | | - Claudia Andrea Lima Cardoso
- Center of Studies in Natural Resources, State University of Mato Grosso do Sul (UEMS), Dourados, Mato Grosso do Sul, Brazil
| | - Arielle Cristina Arena
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista - UNESP, Botucatu, São Paulo, Brazil
- Toxicological Information and Assistance Center (CIATOX), Institute of Biosciences of Botucatu, Univ. Estadual Paulista - Botucatu (UNESP), Botucatu, São Paulo, Brazil
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Jorge BC, Stein J, Reis ACC, de Matos Manoel B, Nagaoka LT, Arena AC. Insights from the maternal lineage of the F2 generation after exposure to an environmentally relevant dose of benzo(a)pyrene in the male rats of F0 generation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:110363-110376. [PMID: 37783996 DOI: 10.1007/s11356-023-30089-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 09/22/2023] [Indexed: 10/04/2023]
Abstract
Benzo(a)pyrene (BaP) is a substance with the potential to induce endocrine disruption in the F0 generation and cause adverse multigenerational effects (F1 generation) for reproductive parameters in rats. The objective of this study was to investigate the occurrence of transgenerational inheritance in the reproductive aspects of male and female rats belonging to the F2 generation (MF2). This investigation was conducted following the exposure of male rats from the F0 generation to BaP to assess potential effects on subsequent generation from the maternal lineage (F1). For that, juvenile male Wistar rats (F0) were orally exposed to BaP (0.1 µg/kg/day) for 31 consecutive days. In adulthood, they were mated with untreated females to obtain female offspring (F1), which later produced the MF2. In the MF2 generation, both males and females exhibited increased body weight on postnatal day (PND) 1. In MF2 males, we observed delayed preputial separation, altered pup weight, reduced levels of follicle-stimulating hormone (FSH), increased intratesticular testosterone levels, decreased type A sperm, epididymal disturbances, reduced 5 α-reductase activity, increased testicular proliferation, and alterations in testicular antioxidant enzymes. In MF2 females, we noted morphological uterine enlargement, reduced sexual activity, and decreased progesterone levels. The findings suggest that the alterations observed in both MF2 males and females can be attributed to modifications in the sperm from F0 generation, which were subsequently transmitted to F1 females and MF2 generation due to BaP exposure.
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Affiliation(s)
- Bárbara Campos Jorge
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, São Paulo State University (Unesp), District of Rubião Junior, S/N, code post - 510, Botucatu, São Paulo, CEP: 18618970, Brazil.
| | - Julia Stein
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, São Paulo State University (Unesp), District of Rubião Junior, S/N, code post - 510, Botucatu, São Paulo, CEP: 18618970, Brazil
| | - Ana Carolina Casali Reis
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, São Paulo State University (Unesp), District of Rubião Junior, S/N, code post - 510, Botucatu, São Paulo, CEP: 18618970, Brazil
| | - Beatriz de Matos Manoel
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, São Paulo State University (Unesp), District of Rubião Junior, S/N, code post - 510, Botucatu, São Paulo, CEP: 18618970, Brazil
| | - Lívia Trippe Nagaoka
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, São Paulo State University (Unesp), District of Rubião Junior, S/N, code post - 510, Botucatu, São Paulo, CEP: 18618970, Brazil
| | - Arielle Cristina Arena
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, São Paulo State University (Unesp), District of Rubião Junior, S/N, code post - 510, Botucatu, São Paulo, CEP: 18618970, Brazil
- Information and Toxicological Assistance Center (CIATOX), Institute of Biosciences of Botucatu, São Paulo State University (Unesp), São Paulo, Brazil
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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] [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.
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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
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Tartaglione AM, Racca A, Ricceri L. Developmental exposure to polycyclic aromatic hydrocarbons (PAHs): Focus on benzo[a]pyrene neurotoxicity. Reprod Toxicol 2023; 119:108394. [PMID: 37164061 DOI: 10.1016/j.reprotox.2023.108394] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 04/28/2023] [Accepted: 05/07/2023] [Indexed: 05/12/2023]
Abstract
Polycyclic Aromatic Hydrocarbons (PAHs) are a class of ubiquitous organic compounds produced during the incomplete combustion or pyrolysis of organic material. Dietary source is the main route for PAH human exposure by environmental contamination, food industrial processing or domestic cooking methods. The most studied PAH is benzo[a]pyrene (B[a]P), due to its harmful and multiple effects on human health: in addition to its well-known carcinogenic effects, emerging evidence indicates that B[a]P also induces neurotoxicity earlier and at lower doses than B[a]P-induced carcinogenicity making B[a]P neurotoxicity relevant to human health risk assessment. Developmental neurotoxicity of B[a]P has indeed received increasing attention: both human and experimental studies provide evidence of detrimental effects of prenatal or early postnatal B[a]P exposure, even at low doses. Indeed, in some of the multi-dose animal studies, maximal adverse effects were observed at lower B[a]P doses, according to a non-monotonic dose-response curve typical of endocrine-disrupting compounds. In substantial agreement with epidemiological studies, both rodents and zebrafish developmentally exposed to B[a]P exhibit long-term changes in multiple behavioural domains, in the absence of overt toxicological effects at birth (e.g. body weight and morphologic abnormalities). Notably, most targeted behavioural responses converge on locomotor activity and emotional profile, often, but not always, leading to a disinhibitory/hyperactive profile.
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Affiliation(s)
- Anna Maria Tartaglione
- Centre for Behavioural Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy
| | - Arianna Racca
- Centre for Behavioural Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy
| | - Laura Ricceri
- Centre for Behavioural Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy.
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Dai M, Huang W, Huang X, Ma C, Wang R, Tian P, Chen W, Zhang Y, Mi C, Zhang H. BPDE, the Migration and Invasion of Human Trophoblast Cells, and Occurrence of Miscarriage in Humans: Roles of a Novel lncRNA-HZ09. ENVIRONMENTAL HEALTH PERSPECTIVES 2023; 131:17009. [PMID: 36719213 PMCID: PMC9888265 DOI: 10.1289/ehp10477] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
BACKGROUND Recurrent miscarriage (RM) affects 1%-3% of pregnancies. However, in almost 50% of cases, the cause is unknown. Increasing evidence have shown that benzo(a)pyrene [B(a)P], a representative of polycyclic aromatic hydrocarbons (PAHs), is correlated with miscarriage. However, the underlying mechanisms of B(a)P/benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide (BPDE)-induced trophoblast cell dysfunctions and miscarriage remain largely unknown. OBJECTIVE The objective was to discover the role(s) of a novel lncRNA, lnc-HZ09, in the regulation of BPDE-inhibited migration and invasion of trophoblast cells and the occurrence of miscarriage. METHOD Human trophoblast cells were treated with 0, 0.25, 0.5, 1.0, or 1.5μM BPDE with or without corresponding lnc-HZ09 silencing or overexpression. Using these cells, we evaluated cell migration and invasion, the mRNA and protein levels of members of the PLD1/RAC1/CDC42 pathway, the regulatory roles of lnc-HZ09 in PLD1 transcription and mRNA stability, and lnc-HZ09 transcription and stability. Human villous tissues were collected from RM (n=15) group and their matched healthy control (HC, n=15) group. We evaluated the levels of BPDE-DNA adducts, lnc-HZ09, and the mRNA and protein expression of members of the PLD1/RAC1/CDC42 pathway, and correlated their relative expression levels. We further constructed 0, 0.05 or 0.2mg/kg B(a)P-induced mouse miscarriage model (each n=6), in which the mRNA and protein expression of members of the Pld1/Rac1/Cdc42 pathway were measured. RESULTS We identified a novel lnc-HZ09. Human trophoblast cells treated with lnc-HZ09 exhibited less cell migration and invasion. In addition, the levels of this lncRNA were higher in villous tissues from women with recurrent miscarriage than those from healthy individuals. SP1-mediated PLD1 mRNA levels were lower, and HuR-mediated PLD1 mRNA stability was less in trophoblast cells overexpressing lnc-HZ09. However, trophoblast cells treated with MSX1 had higher levels of lnc-HZ09, and METTL3-mediated m6A methylation on lnc-HZ09 resulted in greater lnc-HZ09 RNA stability. In BPDE-treated human trophoblast cells and in RM villous tissues, MSX1-mediated lnc-HZ09 transcription and METTL3-mediated lnc-HZ09 stability were both greater. In our mouse miscarriage model, B(a)P-treated mice had lower mRNA and protein levels of members of the Pld1/Rac1/Cdc42 pathway. DISCUSSION These results suggest that in human trophoblast cells, BPDE exposure up-regulated lnc-HZ09 level, suppressed PLD1/RAC1/CDC42 pathway, and inhibited migration and invasion, providing new insights in understanding the causes and mechanisms of unexplained miscarriage. https://doi.org/10.1289/EHP10477.
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MESH Headings
- Pregnancy
- Humans
- Female
- Mice
- Animals
- Trophoblasts
- 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide/metabolism
- 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide/pharmacology
- RNA, Long Noncoding/genetics
- Benzo(a)pyrene/metabolism
- Abortion, Habitual/genetics
- Abortion, Habitual/metabolism
- RNA, Messenger/metabolism
- Methyltransferases/metabolism
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Affiliation(s)
- Mengyuan Dai
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- Department of Toxicology, School of Public Health, Fujian Medical University, Fuzhou, China
| | - Wenxin Huang
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- Department of Toxicology, School of Public Health, Fujian Medical University, Fuzhou, China
| | - Xinying Huang
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- Department of Toxicology, School of Public Health, Fujian Medical University, Fuzhou, China
| | - Chenglong Ma
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- Department of Toxicology, School of Public Health, Fujian Medical University, Fuzhou, China
| | - Rong Wang
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- Department of Toxicology, School of Public Health, Fujian Medical University, Fuzhou, China
| | - Peng Tian
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Weina Chen
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Ying Zhang
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Chenyang Mi
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Huidong Zhang
- Research Center for Environment and Female Reproductive Health, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
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