 - DIGIBIND, a drug that lowers blood pressure, has been used to treat pre-eclampsia. Marinobufagenin MBG, a chemical in the blood that constricts blood vessels, has been shown to be involved in pre-eclampsia. But researchers are still not certain whether DIGIBIND can be used to specifically target MBG. Researchers want to find out whether DIGIBIND acts against MBG specifically. This information may help them to develop better drugs to block MBG and lower blood pressure in women with preeclampsia. 