RT Journal Article
T1 Pregnancy‐associated venous insufficiency course with placental and systemic oxidative stress
A1 Ortega, Miguel Angel
A1 Romero, Beatriz
A1 Asúnsolo, Ángel
A1 Martínez‐Vivero, Clara
A1 Sainz, Felipe
A1 Bravo Arribas, Coral
A1 León Luis, Juan Antonio
A1 Álvarez‐Mon, Melchor
A1 Buján, Julia
A1 García‐Honduvilla, Natalio
AB The development of lower extremity venous insufficiency (VI) during pregnancy has been associated with placental damage. VI is associated with increased oxidative stress in venous wall. We have investigated potential disturbance/dysregulation of the production of reactive oxygen species (ROS) in placenta and its eventual systemic effects through the measurement of malondialdehyde (MDA) plasma levels in women with VI. A total of 62 women with VI and 52 healthy controls (HCs) were studied. Levels of nicotinamide adenine dinucleotide phosphate-oxidase 1 (NOX1), 2 (NOX2), inducible nitric oxide synthase (iNOS), endothelial (eNOS), poly(ADP-ribose) polymerase PARP (PARP) and ERK were measured in placental tissue with immunohistochemistry and RT-qPCR. Plasma and placental levels of MDA were determined by colorimetry at the two study times of 32 weeks of gestation and post-partum. Protein and gene expression levels of NOX1, NOX2, iNOS, PARP and ERK were significantly increased in placentas of VI. eNOS activity was low in both study groups, and there were no significant differences in gene or protein expression levels. Women with VI showed a significant elevation of plasma MDA levels at 32 weeks of gestation, and these levels remained elevated at 32 weeks post-partum. The MDA levels were significantly higher in placentas of women with VI. Placental damage that was found in the women with VI was characterized by overexpression of oxidative stress markers NOX1, NOX2, and iNOS, as well as PARP and ERK. Pregnant women with VI showed systemic increases in oxidative stress markers such as plasma MDA levels. The foetuses of women with VI had a significant decrease in their venous pH as compared to those from HC women. The situation of oxidative stress and cellular damage created in the placenta is in coexpression with the production of a pH acidification.
PB Wiley
SN 1582-1838
SN 1582-4934
YR 2020
FD 2020-03-06
LK https://hdl.handle.net/20.500.14352/115188
UL https://hdl.handle.net/20.500.14352/115188
LA eng
NO Ortega MA, Romero B, Asúnsolo Á, Martínez-Vivero C, Sainz F, Bravo C, De León-Luis J, Álvarez-Mon M, Buján J, García-Honduvilla N. Pregnancy-associated venous insufficiency course with placental and systemic oxidative stress. J Cell Mol Med. 2020 Apr;24(7):4157-4170.
NO Instituto de Salud Carlos III
NO European Development Regional Fund
NO Programas de Actividades de I+D de la CM (B2017/BMD-3804 MITIC-CM)
DS Docta Complutense
RD 17 abr 2025