Role of atrial natriuretic peptide (ANP) in feto-placental and maternal circulation

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ANPwas measured in maternal cubital vein (M), umbilical vein (UV) and artery (UA) in 39 women at term delivery (23 vaginal, 16 caesarean): 15 - normal pregnancy; 24 pregnancies were complicated by placental insufficiency, 14 - by preeclampsia, 10 - by diabetes mellitus. Blood gases and pH in UA, UV were measured.

M, UA, UV ANPat caesarean section was similar to that in vaginal delivery (p>0,05). In normal and complicated pregnancies, UA ANPwas significantly higher than ANPin M and UV. In pregnancies complicated by diabetes mellitus, UV ANPwas higher than ANPin UA (21, 93 fmol/l and 13, 03 fmol/l). In pregnancies complicated by acute placental insufficiency, UV ANPwas significantly lower than that in UA in normal pregnancy (p<0,001). There is positive correlation between ANPconcentration and pH in UV.

Fetus is capable of ANPproduction. ANPmay be synthesized in the placenta.

Fetal hypoxia appears to be a potent stimulus for elevating of ANPplasma concentration.

作者简介

A. Polyanin

Research Institute of Obstetrics and Gynecology named after D.O. Ott, Russian Academy of Medical Sciences; St. Petersburg State Medical University. acad. I. P. Pavlova; Saint Petersburg State University

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medical faculty

俄罗斯联邦, Saint Petersburg; Saint Petersburg; Saint peterburg

I. Kogan

Research Institute of Obstetrics and Gynecology named after D.O. Ott, Russian Academy of Medical Sciences; St. Petersburg State Medical University. acad. I. P. Pavlova; Saint Petersburg State University

Email: info@eco-vector.com

medical faculty

俄罗斯联邦, Saint Petersburg; Saint Petersburg; Saint peterburg

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2. Fig. 1. Dependence of the content of atrial natriuretic peptide (ANP) in the artery (A) on the content of ANP in the umbilical vein (B)

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3. Fig. 2. The content of atrial natriuretic peptide (ANP) in the maternal circulation and fetal placental blood flow in a normally developing pregnancy

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4. Fig. 3. The content of atrial natriuretic peptide (ANP) in the maternal circulation and fetal placental blood flow during pregnancy complicated by chronic placental insufficiency

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5. Fig. 4. The content of atrial natriuretic peptide (ANP) in the maternal circulation and fetal placental blood flow during pregnancy complicated by acute placental insufficiency

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6. Fig. 5-6.

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7. Fig. 7-8.

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8. Fig. 9-10.

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