23. Effects of Methylparaben on fertility and lifespan in an experimental drosophila melanogaster model

Nguyen Trong Tue, Duong Thi Thu Thuy, Tran Quoc Dat

Main Article Content

Abstract

Methylparaben is an additive used for thickening, moisturizing, emulsifying, coloring, and preservation. Previous research has shown that parabens have a limited affinity for estrogen receptors and suggest that this chemical may contribute to endocrine abnormalities. This study investigated the effects of methylparaben on fertility and health using a fruit fly model. Compared to unexposed controls, flies exposed to methylparaben at a concentration of 1% exhibited a shorter lifetime, with a 13.8% decrease in females and 19.2% in males. Additionally, 0.1% methylparaben concentration resulted in lower fertility by 40.74% compared to the control group. Further investigation of the gene expression of EcR and ERR at methylparaben concentrations of 0.02%, 0.1%, and 0.2% revealed that EcR increased from day 10 to day 30. In contrast, ERR increased initially at day ten and then decreased significantly at days 20 and 30 compared to the control group. These findings demonstrated that methylparaben had adverse effects on fruit flies, including shortened longevity and altered reproductive hormone receptors. Further research is needed to evaluate the implications of additives on human health.

Article Details

References

1. Nutrition C for FS and A. Color Additives in Foods. FDA. Published online July 6, 2023. Accessed October 30, 2023. https://www.fda.gov/food/color-additives-information-consumers/color-additives-foods.
2. Trasande L, Shaffer RM, Sathyanarayana S. Food Additives and Child Health. Pediatrics. 2018; 142(2): e20181410. doi:10.1542/peds.2018-1410.
3. Darbre PD, Harvey PW. Paraben esters: review of recent studies of endocrine toxicity, absorption, esterase and human exposure, and discussion of potential human health risks. J Appl Toxicol. 2008; 28(5): 561-578. doi:10.1002/jat.1358.
4. Prusakiewicz JJ, Harville HM, Zhang Y, Ackermann C, Voorman RL. Parabens inhibit human skin estrogen sulfotransferase activity: possible link to paraben estrogenic effects. Toxicology. 2007; 232(3): 248-256. doi:10.1016/j.tox.2007.01.010.
5. Liu T, Li Y, Zhao X, Zhang M, Gu W. Ethylparaben affects lifespan, fecundity, and the expression levels of ERR, EcR and YPR in Drosophila melanogaster. Journal of Insect Physiology. 2014; 71:1-7. doi:10.1016/j.jinsphys.2014.09.008.
6. Livak KJ, Schmittgen TD. Analysis of relative gene expression data using real-time quantitative PCR and the 2(-Delta Delta C(T)) Method. Methods. 2001; 25(4): 402-408. doi:10.1006/meth.2001.1262.
7. Chen Q, Pan C, Li Y, Zhang M, Gu W. The Combined Effect of Methyl- and Ethyl-Paraben on Lifespan and Preadult Development Period of Drosophila melanogaster (Diptera: Drosophilidae). J Insect Sci. 2016; 16(1):15. doi:10.1093/jisesa/iev146.
8. Oehlmann J, Di Benedetto P, Tillmann M, Duft M, Oetken M, Schulte-Oehlmann U. Endocrine disruption in prosobranch molluscs: evidence and ecological relevance. Ecotoxicology. 2007; 16(1): 29-43. doi:10.1007/s10646-006-0109-x.
9. Gáliková M, Klepsatel P, Senti G, Flatt T. Steroid hormone regulation of C. elegans and Drosophila aging and life history. Exp Gerontol. 2011; 46(2-3): 141-147. doi:10.1016/j.exger.2010.08.021.
10. Soller M, Bownes M, Kubli E. Control of oocyte maturation in sexually mature Drosophila females. Dev Biol. 1999; 208(2): 337-351. doi:10.1006/dbio.1999.9210.
11. Weiner AK, Ramirez A, Zintel T, et al. Bisphenol A affects larval growth and advances the onset of metamorphosis in Drosophila melanogaster. Ecotoxicol Environ Saf. 2014; 101:7-13. doi:10.1016/j.ecoenv.2013.12.008.