Abstract
In the intact cat desynchronised sleep induces arterial hypotension and mesenteric vasodilatation, whereas in limb muscles vasoconstriction occurs because of the concurrent action of a spinal vasoconstriction reflex. After sino-aortic denervation arterial hypotension is exaggerated and mesenteric vasodilatation is greater, while the muscular bed of the limbs also becomes vaso-dilated rather than constricted. It is concluded that during desynchronised sleep the sino-aortic afferents act to check a central influence inhibiting vasoconstrictor tone both in the viscera and muscles: thus an excessive fall in blood pressure is prevented by avoiding a too large visceral vasodilatation and by unmasking the vasoconstrictor action of the spinal reflex in the limbs.
| Original language | English |
|---|---|
| Pages (from-to) | 523-528 |
| Number of pages | 6 |
| Journal | Cardiovascular Research |
| Volume | 12 |
| Issue number | 9 |
| Publication status | Published - 1978 |
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ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
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Control of regional circulations by the sino-aortic reflexes during desynchronised sleep in the cat. / Baccelli, G.; Albertini, R.; Mancia, G.; Zanchetti, A.
In: Cardiovascular Research, Vol. 12, No. 9, 1978, p. 523-528.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Control of regional circulations by the sino-aortic reflexes during desynchronised sleep in the cat
AU - Baccelli, G.
AU - Albertini, R.
AU - Mancia, G.
AU - Zanchetti, A.
PY - 1978
Y1 - 1978
N2 - In the intact cat desynchronised sleep induces arterial hypotension and mesenteric vasodilatation, whereas in limb muscles vasoconstriction occurs because of the concurrent action of a spinal vasoconstriction reflex. After sino-aortic denervation arterial hypotension is exaggerated and mesenteric vasodilatation is greater, while the muscular bed of the limbs also becomes vaso-dilated rather than constricted. It is concluded that during desynchronised sleep the sino-aortic afferents act to check a central influence inhibiting vasoconstrictor tone both in the viscera and muscles: thus an excessive fall in blood pressure is prevented by avoiding a too large visceral vasodilatation and by unmasking the vasoconstrictor action of the spinal reflex in the limbs.
AB - In the intact cat desynchronised sleep induces arterial hypotension and mesenteric vasodilatation, whereas in limb muscles vasoconstriction occurs because of the concurrent action of a spinal vasoconstriction reflex. After sino-aortic denervation arterial hypotension is exaggerated and mesenteric vasodilatation is greater, while the muscular bed of the limbs also becomes vaso-dilated rather than constricted. It is concluded that during desynchronised sleep the sino-aortic afferents act to check a central influence inhibiting vasoconstrictor tone both in the viscera and muscles: thus an excessive fall in blood pressure is prevented by avoiding a too large visceral vasodilatation and by unmasking the vasoconstrictor action of the spinal reflex in the limbs.
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UR - http://www.scopus.com/inward/citedby.url?scp=0018223935&partnerID=8YFLogxK
M3 - Article
C2 - 216492
AN - SCOPUS:0018223935
VL - 12
SP - 523
EP - 528
JO - Cardiovascular Research
JF - Cardiovascular Research
SN - 0008-6363
IS - 9
ER -