Abstract
Introduction:
preeclampsia can be associated with future renal disease.
Objectives:
To measure changes in renal function overtime in patients with
preeclampsia.
Methods:
urine and serum samples from eleven patients with preeclampsia and eight
patients with a normal pregnancy were obtained during pregnancy, postpartum,
and 3 years after delivery. Urine podocalyxin, protein, and serum creatinine
were measured.
Results:
after 3 years, there were no significant differences in urinary podocalyxin
in patients with or without preeclampsia: 4.34 ng/mg [2.69, 8.99]
vs. 7.66 ng/mg [2.35, 13], p = 0.77.
The same applied to urinary protein excretion: 81.5 mg/g [60.6, 105.5]
vs. 43.2 mg/g [20.9, 139.3] p = 0.23.
Serum creatinine was 0.86 mg/dL [0.7, 0.9] vs. 0.8 mg/dL
[0.68, 1] p = 0.74 in those with and without preeclampsia.
In normal patients, urinary podocalyxin decreased from 54.4 ng/mg [34.2,
76.9] during pregnancy to 7.66 ng/mg [2.35, 13] three years after pregnancy,
p = 0.01. Proteinuria decreased from 123.5 mg/g [65.9,
194.8] to 43.2 mg/g [20.9, 139.3], p = 0.12. In
preeclampsia patients, urinary podocalyxin decreased from 97.5 ng/mg [64.9,
318.4] during pregnancy to 37.1 ng/mg within one week post-partum [21.3,
100.4] p = 0.05 and 4.34 ng/mg [2.69, 8.99] three years
after, p = 0.003. Proteinuria was 757.2 mg/g [268.4,
5031.7] during pregnancy vs. 757.2 mg/g [288.2, 2917]
postpartum, p = 0.09 vs. 81.5 mg/g [60.6,
105.5] three years later, p = 0.01. Two patients still had
proteinuria after 3 years.
Conclusions:
in preeclampsia patients, postpartum urinary podocalyxin decreased before
proteinuria. After three years, serum creatinine, urinary podocalyxin, and
protein tended to normalize, although some patients still had
proteinuria.
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