ABSTRACT
It is reported that expression of vascular endothelial growth factor (VEGF) in trophoblasts
increases in cases with preeclampsia. Recently, we demonstrated that the lack of cyclin-dependent
kinase inhibitor, p57kip2, expression in the fetus and the placenta plays a role in
the development of preeclampsia-like symptoms in pregnant mice. Furthermore, we observed
that VEGF mRNA and protein levels, especially VEGF164, were higher and its expression was stronger in placentas of p57kip2-null embryos
than in placentas of wild-type embryos. In this study we investigated whether exogenous
murine VEGF164 induced preeclampsia-like symptoms in pregnant mice, and anti-VEGF neutralized antibody
could suppress these symptoms. Administration of VEGF induced hypercoagulation in
the placental circulation and a significant elevation of systolic blood pressure in
pregnant mice. Furthermore, we demonstrated that treatment with anti-VEGF antibody
could suppress the hypercoagulability in placenta and the elevation of systolic blood
pressure. These data suggest that VEGF is related to the pathophysiology of preeclampsia.
KEYWORDS
Vascular endothelial growth factor (VEGF) - hypertension - hypercoagulation - preeclampsia
- anti-VEGF antibody
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Takao KobayashiM.D. Ph.D. Professor
Department of Family and Child Nursing, and Midwifery, Shinshu University School of
Health Sciences
3-1-1 Asahi, Matsumoto City
Nagano Prefecture 390-8621, Japan
eMail: tkoba@shinshu-u.ac.jp