A common vape flavoring may disrupt early embryo development
Vanillin in e‑cigarettes may impair early embryo development by altering stem cell pluripotency via the TRPV4 channel.Summary
A study led by UC Riverside found that vanillin, a flavoring chemical commonly used in e‑cigarettes, can interfere with human embryonic stem cells. At nanomolar concentrations, vanillin caused the cells to lose pluripotency and differentiate into endoderm instead of the normal mix of ectoderm, mesoderm, and endoderm. The effects were mediated through the TRPV4 channel, and blocking this channel prevented the disruption. The researchers warn that pregnant women who vape may be exposed to levels of vanillin that could harm embryonic development, urging caution and better ingredient disclosure. The findings also highlight the need for regulatory policies that consider prenatal vulnerability, and the team is investigating other vape chemicals such as menthol and WS‑23.
(Source：Google News)
