Tributyltin role on the serotonin and histamine receptors in human umbilical artery

Toxicol In Vitro. 2018 Aug:50:210-216. doi: 10.1016/j.tiv.2018.03.006. Epub 2018 Mar 24.

Abstract

Some studies in animals suggest that TBT may constitute a risk factor for cardiovascular diseases. Hence, the main purpose of this study was to investigate in human umbilical artery (HUA) the effect of TBT on vascular reactivity, manly in serotonin (5-HT) and histamine receptors. Using standard organ bath techniques, rings of HUA without endothelium were contracted by 5-HT and histamine. We also investigated the effect of TBT on the expression of the receptors using Real-time PCR. The results show that TBT short term effects include concentration-dependent relaxation. Moreover, at long term exposures, the arteries treated with 100 μM of TBT do not have contraction capacity when 5-HT is added, and the gene expression of 5-HT2A receptor decrease. Regarding histamine, it was demonstrated that TBT induces a concentration-dependent relaxation and the H1 gene expression levels decrease. In conclusion TBT modifies the activity and expression of 5-HT and histamine receptors.

Keywords: Human umbilical artery; Receptors of histamine; Receptors of serotonin; Tributyltin; Vasorelaxation.

MeSH terms

  • Cell Survival / drug effects
  • Endocrine Disruptors / toxicity*
  • Gene Expression / drug effects
  • Humans
  • In Vitro Techniques
  • Receptor, Serotonin, 5-HT2A / genetics*
  • Receptors, Histamine H1 / genetics*
  • Serotonin / pharmacology
  • Trialkyltin Compounds / toxicity*
  • Umbilical Arteries / drug effects*
  • Umbilical Arteries / metabolism
  • Umbilical Arteries / physiology
  • Vasodilation / drug effects

Substances

  • Endocrine Disruptors
  • Receptor, Serotonin, 5-HT2A
  • Receptors, Histamine H1
  • Trialkyltin Compounds
  • Serotonin
  • tributyltin