Cardiovascular function during early development is suppressed by cinnamon flavored, nicotine-free, electronic...

Area of Science:

• Developmental biology
• Cardiovascular toxicology
• Environmental health

Background:

• Electronic cigarette use is prevalent among young people, with limited research on health impacts.
• Existing studies often focus on respiratory effects, neglecting other systems like embryonic development.
• Maternal vaping during pregnancy raises concerns about fetal health, particularly cardiovascular function.

Purpose of the Study:

• To investigate the effects of nicotine-free, flavored electronic cigarette vapor on embryonic cardiovascular function.
• To assess the impact of cinnamon and chocolate flavors on zebrafish embryo cardiovascular development.
• To evaluate dose-dependent effects of e-cigarette vapor exposure.

Main Methods:

• Wild-type zebrafish embryos were exposed to vapor from a vape pen for 24 hours.
• Vapor was infused into water at concentrations of 0.6, 12, and 25 puffs/L.
• Cardiovascular parameters including heart rate, stroke volume, and blood vessel diameter were measured.

Main Results:

• Exposure to 25 puffs/L of cinnamon-flavored e-cigarette vapor significantly reduced all measured cardiovascular parameters except blood vessel diameter.
• Chocolate-flavored vapor at the same concentration did not produce significant effects.
• No significant cardiovascular effects were observed at lower exposure levels (0.6 and 12 puffs/L).

Conclusions:

• Nicotine-free cinnamon-flavored e-cigarette vapor can negatively impact embryonic cardiovascular function.
• Elevated exposure concentrations are associated with adverse effects, even in the absence of nicotine.
• These findings suggest potential risks of flavored vaping products for early developmental stages.