Arterial baroreflex during pregnancy and renal sympathetic nerve activity during parturition in rabbits

The arterial baroreflex control of renal sympathetic nerve activity (RSNA) was evaluated in nine term pregnant (P) and 12 nonpregnant (NP) conscious New Zealand White rabbits. In an additional four P rabbits, the RSNA response to spontaneous parturition was measured. The blood pressure (BP)-RSNA rel...

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Veröffentlicht in:	American journal of physiology. Heart and circulatory physiology 1998-05, Vol.43 (5), p.H1635-H1642
Hauptverfasser:	O'HAGAN, K. P, CASEY, S. M
Format:	Artikel
Sprache:	eng
Schlagworte:	Anatomy & physiology Biological and medical sciences Blood pressure Blood vessels Circulatory system Fundamental and applied biological sciences. Psychology Hormone metabolism and regulation Nervous system Pregnancy Pregnancy. Parturition. Lactation Rabbits Vertebrates: reproduction
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Zusammenfassung:	The arterial baroreflex control of renal sympathetic nerve activity (RSNA) was evaluated in nine term pregnant (P) and 12 nonpregnant (NP) conscious New Zealand White rabbits. In an additional four P rabbits, the RSNA response to spontaneous parturition was measured. The blood pressure (BP)-RSNA relationship was generated by sequential inflations of aortic and vena caval perivascular occluders. Rest BP (P: 61 +/- 2 vs. NP: 73 +/- 2 mmHg) and the centering point of the baroreflex (P: 57 +/- 2 vs. NP: 70 +/- 2 mmHg) were lower (P < 0.05) in term pregnancy.
ISSN:	0363-6135 1522-1539