Vaping during pregnancy has become increasingly common, but the potential risks to the developing baby are still not well understood. A recent study conducted by researchers at the University of California, Riverside, has shed light on the dangers of using menthol flavoring in electronic cigarettes during pregnancy.
Published in the journal Stem Cells Translational Medicine, the study utilized human embryonic stem cells to investigate the effects of low concentrations of menthol on early embryonic development. The researchers discovered that the levels of menthol found in the blood of pregnant women who vape are sufficient to activate stress-related channels known as transient receptor potential channels in the embryonic stem cells.
According to Shabnam Etemadi, the lead author of the study and a bioengineering graduate student working with Professor Prue Talbot, the activation of these channels resulted in inhibited cell growth, increased cell death, and abnormal cell movement in the embryonic stem cells. These changes have the potential to disrupt a crucial stage of development called gastrulation, which could increase the risk of birth defects.
Transient receptor potential channels play a vital role in various sensory and physiological processes, including the detection of heat, cold, pain, and taste. The researchers identified that the TRPA1 channel, one of these channels, was activated by nanomolar concentrations of menthol, which are present in the blood of pregnant women who use mentholated e-cigarettes.
Gastrulation is a critical stage of development during which embryonic cells differentiate to form the three primary germ layers that give rise to all future organs and tissues in the embryo. Any disruptions during this stage can lead to significant structural birth defects. This underscores the importance of understanding the potential risks associated with vaping and the use of mentholated e-cigarettes during pregnancy.
Professor Talbot emphasized the need for further research to explore the impact of vaping on embryonic and fetal development. She also highlighted the potential dangers of using menthol flavoring in electronic cigarettes during pregnancy, recommending that pregnant women avoid e-cigarette use until the effects of flavor chemicals like menthol are fully understood.
The study, titled “Menthol, a Consumer Product Additive, Adversely Effects Human Embryonic Cells via Activation of TRPM8 and TRPA1 Channels,” was published in Stem Cells Translational Medicine in 2024. The findings underscore the importance of raising awareness about the potential risks of vaping during pregnancy and the need for more research in this area.
This article was provided by the University of California – Riverside. For more information, you can access the study through the provided link.
