Developmental and behavioural toxicity induced by acrylamide exposure and amelioration using phytochemicals in Drosophila melanogaster

J Hazard Mater. 2020 Jul 15:394:122533. doi: 10.1016/j.jhazmat.2020.122533. Epub 2020 Mar 27.

Abstract

Acrylamide, an environmental pollutant, is known to occur in food substances cooked at high temperatures. Studies on various models indicate acrylamide to cause several physiological conditions such as neuro- and reproductive toxicity, and carcinogenesis. In our study, exposure of Drosophila melanogaster (Oregon K strain) to acrylamide via their diet resulted in a concentration and time-dependent mortality, while the surviving flies exhibited significant locomotor deficits, most likely due to oxidative stress-induced neuronal damage. Also, Drosophila embryos exhibited signs of developmental toxicity as evidenced by the alteration in the migration of border cells and cluster cells during the developmental stages, concomitant to modulation in expression of gurken and oskar genes. Curcumin, a known antioxidant has been widely studied for its neuroprotective effects against acrylamide; however; very few studies focus on thymoquinone for its role against food toxicant. Our research focuses on the toxicity elicited by acrylamide and the ability of the antioxidants: thymoquinone, curcumin and combination of thereof, in reversing the same.

Keywords: Antioxidants; Assay; Curcumin; Developmental toxicity; Survival; Thymoquinone.

MeSH terms

  • Acetylcholinesterase / metabolism
  • Acrylamide / toxicity*
  • Animals
  • Antioxidants / therapeutic use
  • Behavior, Animal / drug effects
  • Benzoquinones / therapeutic use
  • Curcumin / therapeutic use
  • Drosophila Proteins / genetics
  • Drosophila Proteins / metabolism
  • Drosophila melanogaster / drug effects*
  • Environmental Pollutants / toxicity
  • Female
  • Gene Expression / drug effects
  • Locomotion / drug effects
  • Male
  • Neuroprotective Agents / therapeutic use*
  • Phytochemicals / therapeutic use*
  • Reactive Oxygen Species / metabolism
  • Transforming Growth Factor alpha / genetics
  • Transforming Growth Factor alpha / metabolism

Substances

  • Antioxidants
  • Benzoquinones
  • Drosophila Proteins
  • Environmental Pollutants
  • Neuroprotective Agents
  • Phytochemicals
  • Reactive Oxygen Species
  • Transforming Growth Factor alpha
  • grk protein, Drosophila
  • osk protein, Drosophila
  • Acrylamide
  • Acetylcholinesterase
  • Curcumin
  • thymoquinone