Epidemiological evidence indicates that the virus is transmitted from infected does to their offspring through the consumption of virus-infected colostrum and milk [ 29] or through prolonged close contact with infected adult animals [ 2].
In the cross-sectional GOYA analysis, there was little evidence for associations between maternal alcohol consumption (offspring of drinkers had 0.011 years higher AA on average, 95% CI −0.03, 0.05 years, P = 0.589) or maternal smoking (offspring of smokers had 0.02 years lower AA on average, 95% CI −0.01, 0.04 years lower, P = 0.206) during pregnancy and offspring AA at birth.
Other groups have reported that maternal obesity is necessary for the programming effects of maternal HFD consumption on offspring, however only male offspring were examined such that any effects on females may have been missed (24).
We found that although the detrimental effects of maternal HFD consumption on offspring depressive behavior did not persist into adulthood, it markedly aggravated the behavioral disorder response to stressful challenge in adult offspring.
An apparent beneficial effect of higher total maternal alcohol consumption on offspring balance appeared likely to reflect residual confounding.
34 35 Conversely, other studies have suggested beneficial effects of such levels of maternal alcohol consumption on offspring neurocognitive 13 14 and behavioural outcomes.
We were unable to replicate our findings on maternal smoking or alcohol consumption on offspring AA, perhaps due to the fact that the replication cohort was cross-sectional, as opposed to our longitudinal design.
5 Conflicting results on the effects of gestational alcohol consumption on offspring health outcomes and subsequently, lack of coherence in clinical and government guidelines stem from a lack of biological markers of light or moderate alcohol use during pregnancy.
The major contaminant pathways in marine mammals are via prenatal mother-offspring transfer and food consumption, including mother's milk.
The study of the direct effects of morphine in the embryos will provide a better understanding of the molecular mechanisms that underlie the physical and neurobehavioral defects shown in fetuses and offsprings after maternal morphine consumption [ 40, 41].
