PUBLICATION

Parental exposure to cadmium chloride causes developmental toxicity and thyroid endocrine disruption in zebrafish offspring

Authors
Tian, J., Hu, J., He, W., Zhou, L., Huang, Y.
ID
ZDB-PUB-200428-7
Date
2020
Source
Comparative biochemistry and physiology. Toxicology & pharmacology : CBP   234: 108782 (Journal)
Registered Authors
He, Wei, Hu, Jia, Tian, Jingjing
Keywords
Cadmium chloride, Developmental toxicity, Thyroid endocrine disorder, Zebrafish
MeSH Terms
  • Animals
  • Animals, Newborn
  • Cadmium Chloride/toxicity*
  • Endocrine Disruptors/toxicity*
  • Female
  • Fertility/drug effects
  • Larva/drug effects
  • Larva/growth & development
  • Larva/metabolism
  • Male
  • Maternal Exposure/adverse effects*
  • Paternal Exposure/adverse effects*
  • Pregnancy
  • Prenatal Exposure Delayed Effects/chemically induced*
  • Prenatal Exposure Delayed Effects/pathology
  • Survival Rate
  • Thyroid Gland/drug effects*
  • Thyroid Gland/pathology
  • Thyroid Hormones/metabolism
  • Water Pollutants, Chemical/toxicity
  • Zebrafish/embryology
  • Zebrafish/growth & development*
  • Zebrafish/metabolism
PubMed
32339758 Full text @ Comp. Biochem. Physiol. C Toxicol. Pharmacol.
Abstract
Cadmium is a common heavy metal pollutant. Previous studies have found that long-term cadmium exposure can cause damage to multiple organs/systems in humans and experimental animals; however, there are few studies that elucidate its effects on offspring development, discuss whether it can be transmitted to offspring from the parent, and debate whether it affects the functional development of the thyroid hormone system in offsprings. In this study, sexually mature zebrafish were exposed to different concentrations of cadmium chloride (0.01 μmol/L, 0.1 μmol/L, and 1 μmol/L) to study reproductive toxicity. It was found that parental zebrafish exposed to 1 μmol/L of cadmium chloride produced offsprings with different degrees of malformation. At 5 days post-fertilization (dpf), the levels of 3,5,3'-triiododenosine (T3) and thyroxine (T4) in the zebrafish were decreased. At 10 dpf, the T4 and T3 levels in the zebrafish of the offspring were significantly reduced. At the same time, the expression of thyroid receptor (trα and trβ) genes in five dpf larvae was significantly up-regulated in the 1 μmol/L treatment group relative to the control group. The mRNAs of thyroid hormone synthesis and metabolism-related genes (tshβ, dio1, dio2, ugt1ab, and ttr) were significantly up-regulated in the 0.1 μmol/L and 1 μmol/L treatment groups. This study demonstrates that parental cadmium chloride exposure produces reproductive toxicity in zebrafish and that the effects can be transferred from the parent to the offspring, resulting in developmental toxicity in the thyroid endocrine system.
Genes / Markers
Figures
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping