Reproductive toxicology最新文献

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Extended one-generation reproductive toxicity study of food-grade titanium dioxide E171 with emphasis on reproductive and endocrine endpoints 食品级二氧化钛 E171 的一代生殖毒性扩展研究,重点关注生殖和内分泌终点。
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-20 DOI: 10.1016/j.reprotox.2024.108687
{"title":"Extended one-generation reproductive toxicity study of food-grade titanium dioxide E171 with emphasis on reproductive and endocrine endpoints","authors":"","doi":"10.1016/j.reprotox.2024.108687","DOIUrl":"10.1016/j.reprotox.2024.108687","url":null,"abstract":"<div><p>Food-grade titanium dioxide E171 was administered in feed to Sprague Dawley rats in an extended one-generation reproductive toxicity (EOGRT) study (OECD Test 443). The dosed diet (0, 100, 300, or 1000 mg/kg body weight/day) started 10 weeks before mating and continued throughout the study. After weaning, pups were allocated to Cohorts 1 A/1B (to assess reproductive toxicity), 2 A/2B (to assess developmental neurotoxicity), and 3 (to assess developmental immunotoxicity); in addition, Cohort 1B was mated to produce an F<sub>2</sub> generation and satellite F<sub>0</sub> animals were evaluated for colonic aberrant crypt foci (ACF). In F<sub>0</sub> animals, there were no systemic toxicity or reproductive effects, no treatment-related histopathological changes, and no ACF in the colon. Serum estradiol or testosterone concentrations were not changed in F<sub>0</sub> or F<sub>1</sub> animals. No pre-/postnatal developmental changes related to treatment were noted in F<sub>1</sub> animals, and the reproductive performance of F<sub>1</sub> Cohort 1B animals was unaffected. F<sub>2</sub> pups showed no abnormalities in pre- or postnatal development (postnatal days 4–8). No treatment-related developmental neurotoxicity was observed in Cohorts 2 A/2B. Although no treatment-related immunotoxicity was observed in Cohort 3, the positive control did not induce the expected response; this segment of the study will be repeated. Analyses of blood and urine showed negligible systemic absorption of E171 from the gastrointestinal tract upon dietary ingestion. The no observed adverse effect level (NOAEL) for parental systemic toxicity, reproductive toxicity, offspring toxicity, and developmental neurotoxicity was considered 1000 mg/kg body weight/day. For developmental immunotoxicity, a NOAEL was not determined owing to insufficient T-cell-dependent antibody response in the positive control. Our study provides robust data on the reproductive toxicity and preneoplastic potential of E171.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0890623824001540/pdfft?md5=982d8363f8cb73a287d87f8e794be996&pid=1-s2.0-S0890623824001540-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142036837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Maternal coffee consumption and biomarkers of reproductive health in young, adult sons: a cohort study 母亲饮用咖啡与年轻成年儿子生殖健康的生物标志物:一项队列研究。
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-17 DOI: 10.1016/j.reprotox.2024.108689
{"title":"Maternal coffee consumption and biomarkers of reproductive health in young, adult sons: a cohort study","authors":"","doi":"10.1016/j.reprotox.2024.108689","DOIUrl":"10.1016/j.reprotox.2024.108689","url":null,"abstract":"<div><p>It has been proposed that poor semen quality may have its origins from fetal programming due to environmental factors. We investigated whether maternal coffee consumption during early pregnancy was associated with biomarkers of reproductive health in adult sons in the Fetal Programming of Semen Quality (FEPOS) cohort. In 2017–2019, 1058 young men provided a semen and blood sample and self-measured their testis volume. Daily maternal coffee consumption was reported by the mothers around gestational week 17. We estimated relative percentage differences with 95 % confidence intervals (CI) for semen quality measures, testis volume, and reproductive hormone levels according to maternal coffee consumption during pregnancy. Maternal coffee consumption (yes/no (reference)) was associated with lower semen volume (-7.0 % (95 % CI:-12.9;-0.7)), lower proportion of morphologically normal spermatozoa (-8.3 % (95 % CI:-16.5;0.8)), higher proportion of non-progressive and immotile spermatozoa (4.3 % (95 % CI:-1.5;10.3)), and lower testis volume (-4.8 % (95 % CI:-9.0;-0.4)). No indication of a dose-response association or threshold effects was observed in the categorized and continuous analyses. No associations with reproductive hormone levels were observed in any of the analyses. Overall, the study does not provide obvious indications that maternal coffee consumption in early pregnancy deteriorates male offspring fecundity. While some minor changes were observed, most estimates were small with confidence intervals overlapping the null. Future studies, preferably with greater exposure contrast, are warranted before a conclusion can be drawn as to whether maternal coffee consumption during pregnancy constitutes a risk for reproductive health in adult sons.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0890623824001564/pdfft?md5=7ab244d8ec89d4a5a2ea4ff84695b0bb&pid=1-s2.0-S0890623824001564-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142005134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of fish oil supplementation on histological changes, apoptosis and oxidative stress of rat placenta against formaldehyde-induced toxicity 补充鱼油对大鼠胎盘组织学变化、细胞凋亡和氧化应激对甲醛诱导毒性的影响
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-12 DOI: 10.1016/j.reprotox.2024.108688
{"title":"Effect of fish oil supplementation on histological changes, apoptosis and oxidative stress of rat placenta against formaldehyde-induced toxicity","authors":"","doi":"10.1016/j.reprotox.2024.108688","DOIUrl":"10.1016/j.reprotox.2024.108688","url":null,"abstract":"<div><p>Formaldehyde (FA) as a common organic compound has been shown to cause placental dysfunction and fetal defects. The potential benefits of fish oil (FOil) in protecting placental structures are attributed to its antioxidant properties. This study aimed to explore the preventive role of FOil in mitigating the adverse effects of FA in pregnant rats. Thirty pregnant Wistar rats were randomly categorized into five groups of control, sham (Normal saline; Orally and intraperitoneally), FOil (0.5 ml/day; Orally), FA (5 mg/kg/bw; intraperitoneally), FA+FOil. The treatment period was from day 0–20 of pregnancy. On the 20th day of pregnancy, placental morphometric parameters were measured. The histological and histochemical analyses were performed using H&amp;E and PAS staining, respectively. Also, the placenta tissue was analyzed for oxidative stress biomarkers, p-53 protein levels, and the expression of caspase-3 gene. The administration of FA led to a significant decrease in the weight, diameter, and thickness of the placenta, as well as a decrease in the thickness of the decidua layer, junctional and labyrinth zone, and the number of trophoblast giant cells in rat placentas. FA led to a significant increase in placental p-53 protein levels, caspase-3 expression, and oxidative stress biomarkers. Administration of FOil to pregnant rats treated with FA led to a significant decrease in morphometric and histological changes, oxidative stress, and the expression of genes associated with apoptosis. The findings suggest that the administration of FOil to FA-treated pregnant rats can protect placental histopathological changes by enhancing the activity of the antioxidant enzymes.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141983153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bisphenol A exposure and thyroid dysfunction during pregnancy: A systematic review 孕期双酚 A 暴露与甲状腺功能障碍:系统综述。
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-10 DOI: 10.1016/j.reprotox.2024.108680
{"title":"Bisphenol A exposure and thyroid dysfunction during pregnancy: A systematic review","authors":"","doi":"10.1016/j.reprotox.2024.108680","DOIUrl":"10.1016/j.reprotox.2024.108680","url":null,"abstract":"<div><p>Bisphenol A (BPA) is a phenolic chemical that has been found to be associated with human health outcomes. It is one of the risk factors for thyroid function. Pregnancy is a vulnerable window for thyroid problems, because of the fluctuations in hormone levels. This review aimed to evaluate the association between BPA exposure and thyroid function during pregnancy. We conducted a comprehensive search of relevant databases, including PubMed, Scopus, Embase, Web of Science, and the Cochrane Library, for original studies published in English that reported data on BPA levels and thyroid-related hormone levels in pregnant women. We used the Newcastle-Ottawa Scale (NOS) to assess the methodological quality of the studies and the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) method to evaluate the quality of evidence. In total, 11 studies involving 6526 individuals were included in this systematic review. These studies explored fluctuations in thyroid-related hormones, including TSH, TT3, TT4, FT3, and FT4 levels, as well as the TT4/TT3 and FT4/FT3 ratios. The systematic review is to evaluate the evidences between bisphenol A exposure and thyroid-related hormones in pregnant women. We found that BPA exposure in pregnancy might disturb the homeostasis of maternal thyroid-related hormones and suggest an increased risk of hyperthyroidism. Further studies based on the findings are required to explore the underlying mechanisms and determine the potential effects of BPA exposure on thyroid function during pregnancy.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141971750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prenatal mercury exposure and the secondary sex ratio: The Japan Environment and Children's Study 产前汞暴露与第二性别比率:日本环境与儿童研究
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-09 DOI: 10.1016/j.reprotox.2024.108685
{"title":"Prenatal mercury exposure and the secondary sex ratio: The Japan Environment and Children's Study","authors":"","doi":"10.1016/j.reprotox.2024.108685","DOIUrl":"10.1016/j.reprotox.2024.108685","url":null,"abstract":"<div><p>Prior research into the association between prenatal mercury (Hg) exposure and the secondary sex ratio has yielded inconclusive and conflicting results. Notably, no study has used cord blood Hg measurement in this context. Also, the differences in Hg species and the potential modifying role of selenium (Se) on this association remain unexplored. Using data from the Japan Environment and Children's Study, we analyzed mother–child pairs with available data for concentrations of total mercury (THg) and Se in maternal blood during late pregnancy, and THg, inorganic mercury (IHg), methylmercury (MeHg), and Se in cord blood. Logistic regression models were employed to examine the association between Hg and Se biomarkers and the secondary sex ratio. Out of the total sample of 3698 children, 1877 (50.8 %) were male, corresponding to an overall secondary sex ratio of 1.03. After adjusting for maternal age and parity, no significant associations were observed between THg concentrations of maternal blood and the secondary sex ratio. Nevertheless, we identified that two-fold increases in THg, IHg, and MeHg concentrations in cord blood were positively associated with increased odds of having a male child, yielding adjusted odds ratios of 1.13 (95 %CI: 1.04, 1.22), 1.12 (1.03, 1.21), and 1.12 (1.03, 1.22), respectively. When stratified by the median Se concentrations, no apparent differences were detected in the associations between Hg concentrations and the secondary sex ratio. In summary, elevated Hg concentrations in cord blood, but not maternal blood, were associated with an increased probability of male births.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141913762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New approach methodologies to confirm developmental toxicity of pharmaceuticals based on weight of evidence 根据证据权重确认药物发育毒性的新方法。
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-09 DOI: 10.1016/j.reprotox.2024.108686
{"title":"New approach methodologies to confirm developmental toxicity of pharmaceuticals based on weight of evidence","authors":"","doi":"10.1016/j.reprotox.2024.108686","DOIUrl":"10.1016/j.reprotox.2024.108686","url":null,"abstract":"<div><p>The aim of embryo-fetal developmental toxicity assessments for pharmaceuticals is to inform potential risk of adverse pregnancy outcome, which has traditionally relied on studies in pregnant animals. Recent updates to international safety guidelines (ICH S5R3) have incorporated information on how to use weight of evidence and alternative assays to reduce animal use while still informing risk of fetal harm. Uptake of these alternative approaches has been slow due to limitations in understanding how alternative assays translate to <em>in vivo</em> effects and then relevance to human exposure. To understand the predictivity of new approach methodologies for developmental toxicity (DevTox NAMs), we used two pharmaceutical examples (glasdegib and lorlatinib) to illustrate the value of DevTox NAMs to complement weight of evidence (WoE) assessments while considering the relationship of concentration-effect levels in NAMs to <em>in vivo</em> studies. The <em>in vitro</em> results generated in a battery of assays (mEST, rWEC, zebrafish, and human based stem cells) confirmed the WoE based on literature and further confirmed by preliminary embryo-fetal development data. The data generated for these two compounds supports integrating DevTox NAMs into the developmental toxicity assessment for advanced cancer indications.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141917406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Glycine on epigenetic modification and early embryonic development in porcine oocytes exposed to monobutyl phthalate 甘氨酸对暴露于邻苯二甲酸单丁酯的猪卵母细胞表观遗传修饰和早期胚胎发育的影响
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-09 DOI: 10.1016/j.reprotox.2024.108684
{"title":"Effects of Glycine on epigenetic modification and early embryonic development in porcine oocytes exposed to monobutyl phthalate","authors":"","doi":"10.1016/j.reprotox.2024.108684","DOIUrl":"10.1016/j.reprotox.2024.108684","url":null,"abstract":"<div><p>Monobutyl phthalate (MBP) is the primary active metabolite of dibutyl phthalate (DBP), the key plasticizer component. A substantial body of evidence from studies conducted on both animals and humans indicates that MBP exposure could result in harmful impacts on toxicity pathways. In addition, it can seriously affect human and animal reproductive health. In our present study, we showed that exposure to MBP causes abnormal epigenetic modifications in porcine oocytes and failure of early embryonic development. However, glycine (Gly) can protect oocytes and early embryos from damage caused by MBP. Our study indicated a significant decrease in the percentage of porcine oocytes that reached the metaphase II (MII) phase when exposed to MBP. SET-domain-containing 2(SETD2)-mediated H3K36me3 histone methylation was detected, and the results showed that MBP significantly decreased the protein expression of H3K36me3 and SETD2. Moreover, the expression of the DNA break markers γH2AX and the mRNA expression of <em>Asf1a,</em> and <em>Asf1b</em> increased in the MBP group<em>.</em> The detection of DNA methylation marker proteins showed that MBP significantly increased the fluorescence intensity of 5-methylcytosine (5mC). The results from our RT-qPCR analysis demonstrated a significant decrease in the mRNA expression of the DNA methylation-related genes <em>Dnmt1</em> and <em>Dnmt3a</em>, as well as the embryonic developmental potential-related genes <em>Oct4</em> and <em>Nanog</em>, in porcine oocytes following exposure to MBP. Additionally, the mRNA expression of <em>p53</em> significantly increased. Subsequently, the effects of MBP on early embryonic development were examined via parthenogenesis activation (PA) and <em>in vitro</em> fertilization (IVF). Exposure to MBP significantly impacted the development of embryos in both PA and IVF processes. The TUNEL staining data showed that MBP significantly increased embryonic apoptosis. However, Gly can ameliorate MBP-induced defects in oocyte epigenetic modifications and early embryonic development.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141913729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The protective effect of glucose selenol on cadmium-induced testicular toxicity in male rat 葡萄糖硒醇对镉引起的雄性大鼠睾丸毒性的保护作用
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-08 DOI: 10.1016/j.reprotox.2024.108679
{"title":"The protective effect of glucose selenol on cadmium-induced testicular toxicity in male rat","authors":"","doi":"10.1016/j.reprotox.2024.108679","DOIUrl":"10.1016/j.reprotox.2024.108679","url":null,"abstract":"<div><p>This study aimed to investigate the protective effects of glucose selenol on cadmium (Cd)-induced testicular toxicity. Twenty-four male Sprague-Dawley (SD) rats were randomly divided into four groups. Cd was administered orally at a dose of 40 mg/L or in combination with orally administered glucose selenol at doses of 0.15 mg/L and 0.4 mg/L for 30 days. The results showed that sperm quality decreased and testicular tissue was damaged in the Cd group; Glucose selenol significantly attenuated the negative effects by improving sperm quality and reducing testicular damage. Transcriptome sequencing analysis showed that Cd stress affected spermatogenesis, sperm motility, oxidative stress, blood-testis barrier and protein metabolism. Four clusters were obtained using the R Mfuzz package, which clustered highly expressed genes under different administrations, and 36 items were enriched. Notably, protein phosphorylation was enriched in the Cd group and is considered to play a key role in the response to Cd stress. We identified fifty-six target selenium (Se) and Cd co-conversion differentially expressed genes (DEGs), including three genes relating to spermatogenesis (Dnah8, Spata31d1b, Spata31d1c). In addition, the obtained DEGs were used to construct a protein-protein interaction network, co-processed with Se and Cd, and 5 modules were constructed. Overall, the analyses of rat testicular physiology and gene expression levels offer new insights into the reproductive toxicity of Cd in rats, and provide potential application prospects for glucose selenol in alleviating the impact of Cd-induced testicular damage.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141913763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultra-diluted/dynamized doxorubicin reduces the toxicity caused by doxorubicin during the in vitro culture of pig preantral follicles enclosed in ovarian tissue 超稀释/动态化多柔比星可降低多柔比星对卵巢组织中的猪前卵泡体外培养产生的毒性。
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-08 DOI: 10.1016/j.reprotox.2024.108683
{"title":"Ultra-diluted/dynamized doxorubicin reduces the toxicity caused by doxorubicin during the in vitro culture of pig preantral follicles enclosed in ovarian tissue","authors":"","doi":"10.1016/j.reprotox.2024.108683","DOIUrl":"10.1016/j.reprotox.2024.108683","url":null,"abstract":"<div><p>The present study investigated the effect of adding allopathic doxorubicin (DOX 0.3 µg/mL), the vehicle of ultradiluted/dynamized doxorubicin (0.2 % ethanol), different dynamizations of ultradiluted/dynamized doxorubicin (DOX 6CH, DOX 12CH and DOX 30CH), both in the absence or presence of chemical stress induced by doxorubicin at 0.3 µg/mL on follicular survival and activation, antioxidant capacity of the medium, Catalase activity (CAT), production of reactive protein thiol, maintenance of type I and III collagen fibers and accumulation of lipofuscin in porcine ovarian tissue cultured in vitro for 48 hours. To do this, part of the ovarian tissue fragments was fixed for the uncultured control and the rest were cultured in: MEM (cultured control), DOX 0.3 µg/mL, Ethanol, DOX 6CH, DOX 12CH, DOX 30CH, DOX (0.3 µg/mL) + DOX 6CH, DOX (0.3 µg/mL) + DOX 12CH, DOX (0.3 µg/mL) + DOX 30CH treatments. The results showed that, in general, ultradiluted/dynamized doxorubicin (DOX 6CH, DOX 12CH and DOX 30CH) mitigated the toxic effect of allopathic doxorubicin (0.3 µg/mL) on the morphology of preantral follicles, the content of type I and III collagen fibers, and the production of lipofuscin in the tissue. However, only DOX (0.3 µg/mL) + DOX 6CH attenuated the oxidative stress induced by DOX (0.3 µg/mL), maintaining adequate CAT activity that was similar to the uncultured control. Additionally, when the three isolated ultradiluted/dynamized doxorubicin were considered, only DOX 12CH increased the reduced thiol levels compared to the uncultured control and MEM. In conclusion, supplementing the culture medium with ultradiluted/dynamized DOX (DOX 6CH, DOX 12CH and DOX 30CH) attenuated the toxicity induced by allopathic doxorubicin during the <em>in vitro</em> culture of pig preantral follicles enclosed in ovarian tissue.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141913764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Whole-body exposure to filtered fraction of diesel exhaust induced localized testicular damage through attenuated functional response of glutathione-s-transferase in adult male Wistar rats 成年雄性 Wistar 大鼠全身暴露于柴油废气的过滤馏分后,谷胱甘肽-S-转移酶的功能反应减弱,从而诱发局部睾丸损伤。
IF 3.3 4区 医学
Reproductive toxicology Pub Date : 2024-08-06 DOI: 10.1016/j.reprotox.2024.108682
{"title":"Whole-body exposure to filtered fraction of diesel exhaust induced localized testicular damage through attenuated functional response of glutathione-s-transferase in adult male Wistar rats","authors":"","doi":"10.1016/j.reprotox.2024.108682","DOIUrl":"10.1016/j.reprotox.2024.108682","url":null,"abstract":"<div><p>The possible vulnerability of the male reproductive system to environmental pollutants such as air pollution necessitates a thorough investigation of the underlying mechanisms involved in the dysregulation of male reproductive function. The present study was designed to investigate the influence of the filtered fraction of diesel exhaust (predominantly comprising gases) on male reproductive function in Wistar rat model. Adult male rats were randomly assigned into three groups (n=8/group): Control (unexposed) group (CG-A), the Clean air group in WBE chamber (CAG-A), and Filtered diesel exhaust group in WBE chamber (FDG-A). The exposure protocol for CAG-A and FDG-A was 6 h/day x 5d/week x 6 weeks,evaluation of sperm parameters, testicular histopathology, quantification of hormones (testosterone, LH, FSH, 17β-Estradiol, and prolactin), and GST levels were performed. Results showed that WBE to FDE leads to a significant decline in sperm concentration (p=0.008, CG-A vs FDG-A; p=0.014, CAG-A vs FDG-A), motility (p=0.008, CG-A vs FDG-A; p=0.029, CAG-A vs FDG-A), serum testosterone (p=0.024, CG-A vs FDG-A; p=0.007, CAG-A vs FDG-A), testicular testosterone (p=0.008, CG-A vs FDG-A; p=0.028, CAG-A vs FDG-A), 17β-Estradiol (p=0.007, CG-A vs FDG-A), and GST levels (p=0.0002, CG-A vs FDG-A; p=0.0019, CAG-A vs FDG-A). These findings demonstrate the disruption of testosterone-estradiol balance in the intratesticular milieu without significant alterations in other principal pituitary hormones in adult rats exposed to FDE. The predominant presence of gaseous components in FDE can cause testicular damage due to oxidative imbalance. This underscores the causality of FDE exposure and impaired male reproductive outcomes.</p></div>","PeriodicalId":21137,"journal":{"name":"Reproductive toxicology","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141907602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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