Effects of Endocrine Disruptors on Developmental and Reproductive Functions

Brevini, Tiziana A. L.; Zanetto, Simona Bertola; Cillo, F.

doi:10.2174/1568008053174750

Cited by 53 publications

(26 citation statements)

References 67 publications

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“…Environmental EDs include mycoestrogens produced by molds, such as ZEN (Dunbar et al 2012). ZEN blocks ERs or mimics steroid hormones, in particular estradiol (Brevini et al 2005). Even at very low concentrations, ZEN and its metabolites stimulate cell proliferation sensitive tissues in various animal species, which is consistent with principles of hormesis (Frizell et al 2011, Gajęcka et al 2011, Gajęcka 2013.…”

Section: Discussionsupporting

confidence: 59%

The effect of selected environmental Fusarium mycotoxins on the ovaries in the female wild boar (Sus scrofa)

Zielonka¹,

Gajęcka²,

Żmudzki³

et al. 2015

Polish Journal of Veterinary Sciences

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The contamination of agricultural crops with Fusarium mycotoxins poses one of the greatest problems in food production. Wild boars live in specific habitats and are physiologically sensitive to Fusarium mycotoxins, therefore, they are an interesting model for studies investigating the effects of the discussed toxin, in particular under low-dose exposure. The objective of this study was to determine potential effects of Fusarium mycotoxins ingested with naturally contaminated food on reproductive function based on the proliferation and apoptotic indices of ovarian follicles in female wild boars. The experiment was conducted on 40 wild boars inhabiting north-eastern Poland. The effect of seasonal variations in the quantity and quality of ingested food on the concentrations of Fusarium mycotoxins and their metabolites in the blood of wild boars was analyzed. The observed differences in toxin levels were accompanied by changes in proliferation and apoptotic indices. Proliferation processes were most intense in autumn-winter and were least advanced in winter-spring. The intensity of apoptotic processes was inversely correlated with proliferation.

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Section: Discussionsupporting

confidence: 59%

The effect of selected environmental Fusarium mycotoxins on the ovaries in the female wild boar (Sus scrofa)

Zielonka¹,

Gajęcka²,

Żmudzki³

et al. 2015

Polish Journal of Veterinary Sciences

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“…Although the biological causes of ovarian cancer remain unknown, hormonal factors such as estrogen or gonadotropins have been implicated in the etiology of ovarian cancer [2]. In addition, it has been reported that endocrine disrupting chemicals (EDCs) may increase the risk of cancer incidence [3,4]. However, the data associated with the effect of EDCs on ovarian cancer cells are scarce.…”

mentioning

confidence: 99%

Cell Growth of Ovarian Cancer Cells is Stimulated by Xenoestrogens through an Estrogen-Dependent Pathway, but Their Stimulation of Cell Growth Appears not to be Involved in the Activation of the Mitogen-Activated Protein Kinases ERK-1 and p38

Park

Kim

et al. 2009

Journal of Reproduction and Development

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Abstract. Although endocrine disrupting chemicals (EDCs) may interfere with the endocrine system(s) of our body and have estrogenicity or androgenicity, the exact mechanism(s) underlying their detrimental effects is not clearly understood. Thus, in this study, we evaluated the effects of EDCs on proliferation and regulation of transcription of estrogen receptor (ER)-positive BG-1 ovarian cancer cells, and their possible mechanisms were further examined. Treatment with bisphenol A (BPA), nonylphenol (NP), octylphenol (OP) and methoxychlor (MXC) for 24 h resulted in an increase of cell proliferation. Treatment with BPA, NP, OP and MXC increased the estrogen response element (ERE) activity. The increase of cell proliferation and activation of ERE were reversed in the presence of an estrogen receptor antagonist, ICI 182780. These results suggest that ER is involved in EDC-mediated pathway in ovarian cancer cells. Based on this, we further investigated the involvement of EDCs in activation of mitogen-activated protein kinase (MAPK) in relation to cell growth. BPA rapidly induced activation of extracellular signal-regulated kinase (ERK) 1/2 and p38 MAPK at 15 min, but the effect of BPA (10 μM) on stimulation of cell growth was not blocked by pretreatment with inhibitors of MEK (PD98059) or p38 (SB203580) in a dose-dependent manner. Taken together, EDC-induced proliferation is mediated by a genomic effect through ERs and ERE, but EDC-activated MAPK is unlikely to be involved in EDC-induced cell growth in estrogen-responsive ovarian cancer cells. Key words: Endocrine disrupting chemical, Estrogen receptor, Estrogen response element, Extracellular signalregulated kinase, Mitogen-activated protein kinase (J. Reprod. Dev. 55: [23][24][25][26][27][28][29] 2009) varian carcinoma is one of the most frequent gynaecologic cancers, following breast, lung and colorectal cancer [1]. Although the biological causes of ovarian cancer remain unknown, hormonal factors such as estrogen or gonadotropins have been implicated in the etiology of ovarian cancer [2]. In addition, it has been reported that endocrine disrupting chemicals (EDCs) may increase the risk of cancer incidence [3,4]. However, the data associated with the effect of EDCs on ovarian cancer cells are scarce.Since EDCs are known as environmental chemicals that interfere with the hormonal balance of vertebrates and invertebrates, they are considered to be important in physiology and the endocrine system [5,6]. EDCs are released from industrial products such as plastics, pesticides, detergents and other synthetic products. It has been proposed that EDCs may increase human health risks and have potentials to affect the immune system and development of vital organs [7][8][9].Bisphenol-A (BPA), alkylphenols, dichloro-diphenyl-trichloroethane (DDT), polychlorinated biphenyls (PCBs) and phthalates are mainly highlighted among EDCs. BPA, a compound used in polycarbonate and epoxy resins, has been implicated as a potent risk factor for women's health [10]. BPA has been widely use...

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“…Altered polyadenylation levels of aromatase mRNA in the brain of male as well as female EDs treated rats were demonstrated (Brevini et al, 2005).…”

Section: Discussionmentioning

confidence: 96%

Activity of alkaline phosphatase, acidic phosphatase and nonspecific esterase in the oviducts of puerperal ewes after exposure to polychlorinated biphenyls

Valocký¹,

Legath²,

Lenhardt³

et al. 2007

Vet. Med. - Czech

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The objective of this study was to examine the alkaline, acidic phosphatase and nonspecific esterase activity in the epithelial cells of oviducts after exposure to polychlorinated biphenyls (PCBs) at the time of puerperium. PCBs were administered in the last days of pregnancy and during early puerperium. Animals in the experimental group were exposed to Delor 105 at a dose of 100 μg/kg/day and were euthanised on Day 17 postpartum (n = 4), i.e. 5 days after the termination of 30-day PCB administration; on Day 25 postpartum (n = 5), i.e. 17 days from the last PCB administration and on Day 34 postpartum (n = 5), which corresponded to Day 28 from the completion of PCB administration. Ewes in the control group were euthanised on Day 17 (n = 3), Day 25 (n = 4) and Day 34 (n = 4) postpartum. The authors demonstrated the inhibitory effect of PCB on the enzymatic system of the oviduct during the puerperal period. The alkaline phosphatase, acidic phosphatase and nonspecific esterase activity in the oviductal epithelial cells during a 34-day observation period exhibited a rising trend (P < 0.001 vs. P < 0.001 vs. P < 0.01) in the control group of animals. Experimental animals exposed to the 30-day PCB administration (Delor 105) showed a stagnant tendency (P > 0.05) in alkaline phosphatase while acidic phosphatase and nonspecific esterase activity (P > 0.05) dropped even below the level of their activity values in the control group. It is essential to continue to monitor the effect of pollutants in exposed industrial areas on reparative and regenerative processes in puerperium and their possible impact on reproductive performance.

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Effects of Endocrine Disruptors on Developmental and Reproductive Functions

Cited by 53 publications

References 67 publications

The effect of selected environmental Fusarium mycotoxins on the ovaries in the female wild boar (Sus scrofa)

The effect of selected environmental Fusarium mycotoxins on the ovaries in the female wild boar (Sus scrofa)

Cell Growth of Ovarian Cancer Cells is Stimulated by Xenoestrogens through an Estrogen-Dependent Pathway, but Their Stimulation of Cell Growth Appears not to be Involved in the Activation of the Mitogen-Activated Protein Kinases ERK-1 and p38

Activity of alkaline phosphatase, acidic phosphatase and nonspecific esterase in the oviducts of puerperal ewes after exposure to polychlorinated biphenyls

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