[2][3] She demonstrated that drugs and their metabolites can be transferred from a pregnant woman to her developing child, and later through breast milk, from a mother to a baby.
Horning's work made possible the prevention of birth defects, as doctors began to warn of the dangers of drugs, alcohol, and smoking during pregnancy.
[2] In 1950, Evan was appointed Chief of the Laboratory of the Chemistry of Natural Products of the National Institutes of Health (NIH) in Bethesda, Maryland.
In 1973, Atmospheric Pressure Chemical Ionization (APCI) first reported using a 63Ni foil and corona discharge by Evan and Marjorie Horning of Baylor College of Medicine.
DLI with effluent introduced directly from an LC column with APCI using 63Ni foil/corona discharge source, reported by Evan and Marjorie Horning, Baylor College of Medicine.
[2] In 1981, she became an adjunct professor of biochemistry and biophysics at the University of Houston, held concurrently with her position at Baylor.
[12][13] Horning investigated the metabolism of drugs and their metabolites in humans, with particular attention to prenatal transmission between a pregnant woman and an embryo or fetus.
As a result of her work, doctors in the 1980s began to warn women about the risks of taking medications, drinking alcohol, and smoking during pregnancy.
Ever thoughtful philanthropists, the Hornings also established generous endowments to support these core collecting interests.