Dataset Information

Exposure to endocrine disrupters and nuclear receptor gene expression in infertile and fertile women from different Italian areas.

ABSTRACT: Within the PREVIENI project, infertile and fertile women were enrolled from metropolitan, urban and rural Italian areas. Blood/serum levels of several endocrine disrupters (EDs) (perfluorooctane sulfonate, PFOS; perfluorooctanoic acid, PFOA; di-2-ethylhexyl-phthalate, DEHP; mono-(2-ethylhexyl)-phthalate, MEHP; bisphenol A, BPA) were evaluated concurrently with nuclear receptors (NRs) gene expression levels (ERa, ERb, AR, AhR, PPARg, PXR) in peripheral blood mononuclear cells (PBMCs). Infertile women from the metropolitan area displayed significantly higher levels of: BPA compared to fertile women (14.9 vs. 0.5 ng/mL serum); BPA and MEHP compared to infertile women from urban and rural areas; enhanced expression levels of NRs, except PPARg. Infertile women from urban and rural areas had PFOA levels significantly higher than those from metropolitan areas. Our study indicates the relevance of the living environment when investigating the exposure to EDs and the modulation of the NR panel in PBMC as a suitable biomarker of the effect, to assess the EDs impact on reproductive health.

SUBMITTER: La Rocca C

PROVIDER: S-EPMC4210972 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Exposure to endocrine disrupters and nuclear receptor gene expression in infertile and fertile women from different Italian areas.

La Rocca Cinzia C Tait Sabrina S Guerranti Cristiana C Busani Luca L Ciardo Francesca F Bergamasco Bruno B Stecca Laura L Perra Guido G Mancini Francesca Romana FR Marci Roberto R Bordi Giulia G Caserta Donatella D Focardi Silvano S Moscarini Massimo M Mantovani Alberto A

International journal of environmental research and public health 20140929 10

Within the PREVIENI project, infertile and fertile women were enrolled from metropolitan, urban and rural Italian areas. Blood/serum levels of several endocrine disrupters (EDs) (perfluorooctane sulfonate, PFOS; perfluorooctanoic acid, PFOA; di-2-ethylhexyl-phthalate, DEHP; mono-(2-ethylhexyl)-phthalate, MEHP; bisphenol A, BPA) were evaluated concurrently with nuclear receptors (NRs) gene expression levels (ERa, ERb, AR, AhR, PPARg, PXR) in peripheral blood mononuclear cells (PBMCs). Infertile w ...[more]

PMID: 25268510

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Project description:BackgroundIt was believed earlier that spermatozoa have no traces of RNA because of loss of most of the cytoplasm. Recent studies have revealed the presence of about 3000 different kinds of mRNAs in ejaculated spermatozoa. However, the correlation of transcriptome profile with infertility remains obscure.MethodsTotal RNA from sperm (after exclusion of somatic cells) of 60 men consisting of individuals with known fertility (n=20), idiopathic infertility (normozoospermic patients, n=20), and asthenozoospermia (n=20) was isolated. After RNA quality check on Bioanalyzer, AffymetrixGeneChip Human Gene 1.0 ST Array was used for expression profiling, which consisted of >30,000 coding transcripts and >11,000 long intergenic non-coding transcripts.ResultsComparison between all three groups revealed that two thousand and eighty one transcripts were differentially expressed. Analysis of these transcripts showed that some transcripts [ribosomal proteins (RPS25, RPS11, RPS13, RPL30, RPL34, RPL27, RPS5), HINT1, HSP90AB1, SRSF9, EIF4G2, ILF2] were up-regulated in the normozoospermic group, but down-regulated in the asthenozoospermic group in comparison to the control group. Some transcripts were specific to the normozoospermic group (up-regulated: CAPNS1, FAM153C, ARF1, CFL1, RPL19, USP22; down-regulated: ZNF90, SMNDC1, c14orf126, HNRNPK), while some were specific to the asthenozoospermic group (up-regulated: RPL24, HNRNPM, RPL4, PRPF8, HTN3, RPL11, RPL28, RPS16, SLC25A3, C2orf24, RHOA, GDI2, NONO, PARK7; down-regulated: HNRNPC, SMARCAD1, RPS24, RPS24, RPS27A, KIFAP3). A number of differentially expressed transcripts in spermatozoa were related to reproduction (n = 58) and development (n= 210). Some of these transcripts were related to heat shock proteins (DNAJB4, DNAJB14), testis specific genes (TCP11, TESK1, TSPYL1, ADAD1), and Y-chromosome genes (DAZ1, TSPYL1).ConclusionA complex RNA population in spermatozoa consisted of coding and non-coding RNAs. A number of transcripts that participate in a host of cellular processes, including reproduction and development were differentially expressed between fertile and infertile individuals. Differences between comparison groups suggest that sperm RNA has strong potential of acting as markers for fertility evaluation.

Project description:Endocrine disrupting chemicals (EDCs) can impair hippocampus-dependent behaviors in rat offspring and in children. In search for key processes underlying this effect, we compared the transcriptomes of rat hippocampus on postnatal day 6 after gestational and lactational exposure to three different EDCs at doses known to impair development of learning and memory. Aroclor 1254, a commercial PCB mixture (5 mg/kg or 0.5 mg/kg), or bisphenol A (5 mg/kg or 0.5 mg/kg) were administered in chow, chlorpyrifos (3 mg/kg or 1 mg/kg) was injected subcutaneously. Male hippocampus exhibited a common effect of all three chemicals on genes involved in cell-autonomous processes, Sox6, Sox11, Pou2f2/Oct2, and Pou3f2/Brn2, all upregulated at the high dose. Additional genes of the Sox and Pou families were affected by only one or two of the chemicals. Real time RT PCR showed a comparable expression change for bisphenol A also at the lower dose. Female hippocampus exhibited much fewer genes with expression changes (almost none with false discovery rate <0.05), and none of the genes of the Sox and Pou families was affected. Since gene network analyses in male hippocampus suggested a link between Sox6 and miR-24, known to be repressed by activation of ER-alpha and to repress Sox6 in other tissues, this microRNA was measured. miR-24 was downregulated by all chemicals at the high dose in males. Values of Sox6 mRNA and miR-24 were inversely correlated in individual male hippocampus samples, supporting the hypothesis that the change in Sox6 expression resulted from an action of miR-24. In contrast, miR-24 levels remained unchanged in hippocampus of females. A sexually dimorphic response of miR-24 may thus be at the basis of the sex difference in Sox6 expression changes following exposure to the three chemicals. ER-alpha expression was also sex-dependent, but the expression changes did not parallel those of potential downstream genes such as Sox6. Sox6 is known to suppress differentiation of Parvalbumin (Pvalb)-expressing interneurons. Individual Sox6 levels (FPKM) were inversely correlated with levels of Pvalb, but not with markers of Sox6-independent interneuron subpopulations, Nos1 and 5HT3aR. Effects on interneuron development are further suggested, in males, by expression changes of Nrg1 and its receptor Erbb4, controlling interneuron migration. Our study disclosed new types of EDC-responsive morphogenetic genes, and illustrated the potential relevance of microRNAs in sexually dimorphic EDC actions.

Project description:BackgroundInfertility can have detrimental physical, psychological, and social effects that significantly impact health-related quality of life. Although the impact of infertility on quality of life is well established, there is a lack of research comparing the quality of life between fertile and infertile women in Ethiopia.MethodsA hospital-based comparative cross-sectional study was conducted among 287 infertile and 301 fertile women. Participants were selected using systematic random sampling. A structured, validated tool was used to collect data. An independent sample t-test was conducted to determine if there was a difference in the study participants' quality of life domains and the mean total quality of life score. Multiple linear regressions were used to correlate quality of life scores with significant predictor factors for the infertile group.ResultsInfertile women had a mean total Herbal of 66.54 ± 10.18, and fertile women (72.68 ± 7.57) were found to be statistically different between the groups. All domains except the physical domain were significantly different between the groups. Duration of marriage (β = -0.529), number of previous sexual partners (β = -0.410), total number of working hours per day (β = -0.345), types of infertility (β = -0.34), and history of the sexually transmitted disease (β = -0.277), in decreasing order of effect, were found to be associated with the quality of life of infertile women (R2 = 0.725).ConclusionsThe study found that infertile women had a lower mean HRQoL score compared to fertile women, with all domains except for the physical domain being significantly different between the two groups. This suggests that infertility can have a significant impact on various aspects of a woman's life, including her emotional well-being, social functioning, and psychological health. The factors associated with the quality of life of infertile women were the duration of marriage, the number of previous sexual partners, the total number of working hours per day, the types of infertility, and the history of sexually transmitted diseases, with duration of marriage having the strongest association. These findings highlight the need for healthcare providers to address the psychological and social aspects of infertility.

Dataset Information

Exposure to endocrine disrupters and nuclear receptor gene expression in infertile and fertile women from different Italian areas.

Publications

Exposure to endocrine disrupters and nuclear receptor gene expression in infertile and fertile women from different Italian areas.

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