TY - JOUR
T1 - Triclosan (TCS) exposure impairs lipid metabolism in zebrafish embryos
AU - Ho, Jeff C.H.
AU - Hsiao, C. D.
AU - Kawakami, K.
AU - TSE, William K F
N1 - Funding Information:
This work was supported by the Faculty Research Fund, Hong Kong Baptist University ( FRG1/14-15/075 ) and Dr. Lee Shau Kee’s donation ( LSK/14-15/P06 ) to WKFT.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - Triclosan (TCS) is an active antimicrobial ingredient used in many household products, such as skin creams and toothpaste. It is produced in high volumes, and humans are directly exposed to it and dispose it on a daily basis. TCS has been found to contaminate water worldwide. This study aimed to understand the potential developmental and metabolic abnormalities caused by TCS exposure by using zebrafish as the experimental model. Four developmental stages (70-85% epiboly, 10-12 somite, prim-5, and 5dpf) were selected to perform in situ hybridization staining to investigate the effects of TCS on dorsal ventral patterning, segmentation, brain development, and organ formation. Results showed, in terms of developmental toxicology, that neither phenotypic nor molecular changes were found after 5 days of 250. μg/L TCS exposure. However, such dosage of TCS exposure resulted in lipid droplet accumulation in the yolk sac, which might due to the deregulated mRNA expression level of beta-oxidation transcripts. This study showed that 250. μg/L TCS exposure does not affect normal embryogenesis or organogenesis; however, there are concerns regarding possible impairment of lipid metabolism.
AB - Triclosan (TCS) is an active antimicrobial ingredient used in many household products, such as skin creams and toothpaste. It is produced in high volumes, and humans are directly exposed to it and dispose it on a daily basis. TCS has been found to contaminate water worldwide. This study aimed to understand the potential developmental and metabolic abnormalities caused by TCS exposure by using zebrafish as the experimental model. Four developmental stages (70-85% epiboly, 10-12 somite, prim-5, and 5dpf) were selected to perform in situ hybridization staining to investigate the effects of TCS on dorsal ventral patterning, segmentation, brain development, and organ formation. Results showed, in terms of developmental toxicology, that neither phenotypic nor molecular changes were found after 5 days of 250. μg/L TCS exposure. However, such dosage of TCS exposure resulted in lipid droplet accumulation in the yolk sac, which might due to the deregulated mRNA expression level of beta-oxidation transcripts. This study showed that 250. μg/L TCS exposure does not affect normal embryogenesis or organogenesis; however, there are concerns regarding possible impairment of lipid metabolism.
KW - Beta oxidation
KW - Developmental toxicity
KW - Embryogenesis
KW - Environmental pollutant
UR - http://www.scopus.com/inward/record.url?scp=84955592933&partnerID=8YFLogxK
U2 - 10.1016/j.aquatox.2016.01.001
DO - 10.1016/j.aquatox.2016.01.001
M3 - Journal article
C2 - 26828895
AN - SCOPUS:84955592933
SN - 0166-445X
VL - 173
SP - 29
EP - 35
JO - Aquatic Toxicology
JF - Aquatic Toxicology
ER -