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Updated: Oct 7, 2025

A Microplate Assay to Assess Chemical Effects on RBL-2H3 Mast Cell Degranulation: Effects of Triclosan without Use of an Organic Solvent

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PPARγ Regulates Triclosan Induced Placental Dysfunction.

Jing Li^1,2, Xiaojie Quan^1,2, Yue Zhang^1,2

¹School of Public Health, Xuzhou Medical University, 209 Tong-Shan Road, Xuzhou 221002, China.

|January 11, 2022

Summary

Triclosan (TCS) harms placenta and fetal development. Peroxisome proliferator-activated receptor γ (PPARγ) activation protects against TCS toxicity by regulating cell viability, migration, and inflammation.

Keywords:

PPARγ angiogenesis cell migration inflammation placenta toxicity triclosan

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Area of Science:

Reproductive toxicology
Developmental biology
Molecular endocrinology

Background:

Triclosan (TCS) exposure is linked to adverse pregnancy outcomes.
Peroxisome proliferator-activated receptor γ (PPARγ) plays a vital role in placental development.
The protective mechanism of PPARγ against TCS-induced placental injury is not fully understood.

Purpose of the Study:

To investigate the role of PPARγ in triclosan (TCS)-induced placental dysfunction.
To elucidate the molecular mechanisms underlying PPARγ's protective effects against TCS toxicity.
To evaluate the therapeutic potential of PPARγ activation in mitigating TCS-induced adverse effects.

Main Methods:

In vitro studies using HTR-8/SVneo and JEG-3 cells to assess TCS effects on cell viability, migration, and angiogenesis.
In vivo studies in mice to evaluate placental and fetal development following TCS exposure.
Gene expression analysis of PPARγ and related inflammatory and angiogenesis markers.
Pharmacological manipulation of PPARγ activity using agonists (rosiglitazone) and antagonists (GW9662).

Main Results:

TCS inhibited cell viability, migration, and angiogenesis in placental cells in a dose-dependent manner.
TCS downregulated PPARγ expression and its downstream genes while upregulating inflammatory markers.
PPARγ activation (rosiglitazone) ameliorated TCS-induced cellular damage and inflammation.
PPARγ inhibition (GW9662) exacerbated TCS toxicity.
TCS exposure led to decreased placental and fetal weight in mice, which was alleviated by rosiglitazone treatment.

Conclusions:

Triclosan (TCS) induces placenta and fetal developmental toxicity mediated by the PPARγ pathway.
PPARγ acts as a protective factor against TCS-induced placental injury.
Activation of PPARγ presents a potential therapeutic strategy to counteract the adverse effects of TCS exposure during pregnancy.