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Lab Anim Sci. 1979 Feb;29(1):102-6.

Spontaneous preeclamptic toxemia of pregnancy in the patas monkey (Erythrocebus patas).


A disease characterized by edema, proteinuria, hypoproteinemia and hypertension was seen in late gestation in patas monkeys. The initial sign was edema of the perineum, ankles and lower trunk. The onset was abrupt, occurring 7 days or less prepartum. The affected animals were not depressed, and convulsions were not seen. In 6 of the 98 pregnancies during a 1-year period, symptoms of the disease were present. The highest incidence was manifested by primiparous animals with 3 of 36 pregnancies affected. Two of 38 second pregnancies and 1 of 24 third pregnancies were also affected. Five of the animals recovered spontaneously and were normal 14 days postpartum. Edema persisted for 30 days in one female. This animal continued to be hypertensive and had persistent mild proteinuria and hypoproteinemia. She was killed approximately 1 year postpartum due to severe renal disease. The spontaneous disease seen in patas monkeys resembled toxemia of pregnancy in humans more closely than the experimentally induced disease in other animals.

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