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Effects of in utero and lactational exposure to new generation green plasticizers on adult male rats: a comparative study with di(2-ethylhexyl) phthalate

ABSTRACT: Effects of in utero and lactational exposure to new generation green plasticizers on adult male rats: a comparative study with di(2-ethylhexyl) phthalate

PROVIDER: PRJNA433979 | ENA |

REPOSITORIES: ENA

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Effects of in utero and lactational exposure to new generation green plasticizers on adult male rats: a comparative study with di(2-ethylhexyl) phthalate

Project description:Di(2-ethylhexyl) phthalate (DEHP), a widely used plasticizer, is a ubiquitous environmental pollutant and may act as an endocrine disruptor. Early life exposures to DEHP may result in anti-androgenic effects, impairing the development of the male reproductive tract. However, data on the long-lasting consequences of such DEHP exposures on adult male reproductive function are still rare and discrepant. Previously, we identified two novel plasticizers, 1,4 butanediol dibenzoate (BDB) and dioctyl succinate (DOS), as potential substitutes for DEHP that did not reproduce classically described endocrine disrupting phenotypes in prepubertal male offspring after maternal exposure. Here, we investigated the consequences of in utero and lactational exposure to BDB and DOS on adult male rat reproductive function in a comparative study with DEHP and a commercially available alternative plasticizer, 1,2-cyclohexane dicarboxylic acid diisononyl ester (DINCH). Timed pregnant Sprague-Dawley rats were gavaged with vehicle or a test chemical (30 or 300 mg/kg/day) from gestation day 8 to postnatal day 21. While DEHP exposure (300 mg/kg/day) significantly increased epididymal weight in the adult, exposure to DINCH, BDB or DOS did not affect reproductive organ weights, steroid levels or sperm quality. Using a toxicogenomic microarray approach, we found that adult testicular gene expression was affected by exposure to the higher dose of DEHP; transcripts such as Nr5a2, Ltf or Runx2 were significantly downregulated, suggesting that DEHP was targeting estrogen signaling. Lesser effects were observed after treatment with either DINCH or BDB. DOS exposure did not produce such effects, confirming its potential as a responsible substitute for DEHP. The data deposited correspond to testicular gene expression in 90 day-old Sprague-Dawley rats after exposure to CORN OIL and 30 or 300 mg/kg/day DEHP, DINCH, BDB or DOS from gestational day 8 to post-natal day 21

2018-02-14 | GSE110553 | GEO

Green tea polyphenols alleviate liver injury induced by di(2-ethylhexyl) phthalate in mice

Project description:Di (2-ethylhexyl) phthalate (DEHP) is a common plasticizer. Studies have revealed that DEHP exposure can cause liver damage. Green tea is one of the most popular beverages in China. Green tea polyphenols (GTPs) have been proven to have therapeutic effects on organ damage induced by heavy metal exposure. However, few study report on GTP relieving DEHP-induced liver damage.

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In Utero and Lactational Exposure Study in Rats to Identify Replacements for Di(2-ethylhexyl) Phthalate.

Project description:Di(2-ethylhexyl) phthalate (DEHP) and other phthalates are ubiquitous environmental contaminants with endocrine disrupting properties. Two novel plasticizers, 1,4 butanediol dibenzoate (BDB) and dioctyl succinate (DOS), have been proposed as potential replacements. Both have desirable properties as plasticizers and minimal in vitro biological effects. Herein, we present an in utero and lactational exposure study comparing DEHP with BDB, DOS, and 1,2-cyclohexane dicarboxylic acid diisononyl ester (DINCH), a commercial alternative. Timed-pregnant Sprague-Dawley rats were gavaged with vehicle or one of these chemicals at 30 or 300?mg/kg/day from gestational day 8 until postnatal day (PND) 21. The offspring were examined for effects on developmental and endocrine markers until PND 46. DEHP treatment (300?mg/kg) decreased heart weights in dams and induced a significant decrease in anogenital index and an increase in hemorrhagic testes and multinucleated gonocytes in PND 3 male pups. An increase in the incidence of hemorrhagic testes was also observed on PND 8 after exposure to DINCH (30 and 300?mg/kg). The only other effects observed were decreases in serum alanine transaminase and magnesium in BDB 30 exposed dams. These data suggest that both BDB and DOS are viable alternative plasticizers.

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Expression data from HeLa cell treated with Bisphenol S and Mono-ethylhexyl phthalate

Project description:Bisphenol S and mono-ethylhexyl phthalate are widely used in the industry of making plastic, mailing envelopes, tickets, etc. Humans are exposed to these compounds by skin contact, inhalation, and food ingestions. However, the molecular mechanisms of these compounds' adverse effects are still unclear. We address the molecular and cellular mechanisms underlying Bisphenol S and mono-ethylhexyl phthalate effects on HeLa cells. Here microarray analysis was performed to identify distinct classes of up- or down-regulated genes and their connections to the different metabolic pathways.

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Toxicogenomic Screen of Replacements for bis(2-ethylhexyl) phthalate (DEHP) Using the Immortalized TM4 Sertoli Cell Line

Project description:Phthalate plasticizers are being phased out of consumer products because of their endocrine disrupting properties. This has resulted in a need to find safe alternatives that can plasticize polyvinyl chloride (PVC) while being inexpensive and biodegradable. We aim to study the toxicogenomic profile of mono-(2-ethylhexyl) phthalate (MEHP, the active metabolite of bis(2-ethylhexyl) phthalate, DEHP), the commercial plasticizer 1,2-cyclohexane dicarboxylic acid diisononyl ester (DINCH), and three plasticizers in development (1,4 butanediol dibenzoate (BDB), dioctyl succinate (DOS), and dioctyl maleate (DOM)) using the immortalized TM4 Sertoli cell line.

2015-08-06 | GSE66812 | GEO

Toxicogenomic Screen of Replacements for bis(2-ethylhexyl) phthalate (DEHP) Using the Immortalized TM4 Sertoli Cell Line

2015-08-06 | E-GEOD-66812 | biostudies-arrayexpress

The effects of Korean Red Ginseng on Di-(2-ethylhexyl) phthalate-induced inflammatory response in endometrial cancer cells

Project description:Di-(2-ethylhexyl) phthalate (DEHP) is the most common endocrine disrupting chemical used as a plasticizer. DEHP is associated with the development of endometrium-related diseases through the induction of inflammation. The major therapeutic approaches against endometrial cancer and endometriosis involve the suppression of inflammatory response. Korean red ginseng (KRG) is a natural product with anti-inflammatory and anti-carcinogenic effects. Thus, the purpose of this study is to investigate the effects of KRG on DEHP-induced inflammatory response in endometrial cancer Ishikawa cells.

2022-07-13 | GSE154388 | GEO

Effects of In Utero and Lactational Exposure to New Generation Green Plasticizers on Adult Male Rats: A Comparative Study With Di(2-Ethylhexyl) Phthalate.

Project description:Di(2-ethylhexyl) phthalate (DEHP), a widely used plasticizer, is a ubiquitous environmental contaminant and may act as an endocrine disruptor. Early life exposures to DEHP may result in anti-androgenic effects, impairing the development of the male reproductive tract. However, data on the long-lasting consequences of such DEHP exposures on adult male reproductive function are still rare and discrepant. Previously, we identified 2 novel plasticizers, 1,4-butanediol dibenzoate (BDB) and dioctyl succinate (DOS), as potential substitutes for DEHP that did not reproduce classically described endocrine disrupting phenotypes in prepubertal male offspring after maternal exposure. Here, we investigated the consequences of in utero and lactational exposure to BDB and DOS on adult male rat reproductive function in a comparative study with DEHP and a commercially available alternative plasticizer, 1,2-cyclohexane dicarboxylic acid diisononyl ester (DINCH). Timed pregnant Sprague Dawley rats were gavaged with vehicle or a test chemical (30 or 300 mg/kg/day) from gestation day 8 to postnatal day 21. While DEHP exposure (300 mg/kg/day) significantly increased epididymal weight in the adult, exposure to DINCH, BDB, or DOS did not affect reproductive organ weights, steroid levels, or sperm quality. Using a toxicogenomic microarray approach, we found that adult testicular gene expression was affected by exposure to the higher dose of DEHP; transcripts such as Nr5a2, Ltf, or Runx2 were significantly downregulated, suggesting that DEHP was targeting estrogen signaling. Lesser effects were observed after treatment with either DINCH or BDB. DOS exposure did not produce such effects, confirming its potential as a responsible substitute for DEHP.

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Project description:We report the results of an RNA-seq analysis conducted as part of an experiment investigating the effects of the phthalate, mono-(2-ethylhexyl) phthalate (MEHP), and all-trans retinoic acid (ATRA) on cultured fetal mouse testes. The goal of the study was to determine whether fetal testis toxicity of MEHP is partially driven by disruption of retinoic acid signaling.

2022-02-05 | GSE195969 | GEO

SYSTEMS ANALYSIS OF THE LIVER TRANSCRIPTOME IN ADULT MALE ZEBRAFISH EXPOSED TO THE PLASTICIZER (2-ETHYLHEXYL) PHTHALATE (DEHP).

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