Cannabis exposure during pregnancy has measurable impact on placental and fetal growth

Cannabis exposure during pregnancy has measurable impact on placental and fetal growth

Research shows how the hepatitis D virus copies itself The research team was also able to characterize how THC prevents oxygen and nutrients from crossing the placenta into the developing fetus. By studying human placental cells, the researchers found that exposure to THC caused a decrease in a glucose transporter called GLUT-1. This indicates that the THC is preventing the placental transfer of glucose, a key nutrient, from the mother to the fetus. They also found a reduction in placental vasculature in the rat model suggesting reduced blood flow from the mother to the fetus. The researchers say both of those factors are likely contributing to the growth restriction that they observed in the offspring. The researchers point out that there are currently no clear guidelines from Health Canada on the use of cannabis in pregnancy and some studies have shown that up to one in five women are using cannabis during pregnancy to prevent morning sickness, for anxiety or for social reasons. "Marjiuana has been legalized in Canada and in many states in the US, however, its use during pregnancy has not been well studied up until this point. This study is important to support clinicians in communicating the very real risks associated with cannabis use during pregnancy," said David Natale, PhD, Associate Professor at Queen's and co-author on the paper. Source: University of Western Ontario Journal reference: Natale, B. V., et al . (2020) Δ9-tetrahydrocannabinol exposure during rat pregnancy leads to symmetrical fetal growth restriction and labyrinth-specific vascular defects in the placenta. Scientific Reports . doi.org/10.1038/s41598-019-57318-6 .



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