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Titolo:
EFFECTS OF RENAL RECEPTOR STIMULATION ON NEURONS WITHIN THE VENTROLATERAL MEDULLA OF THE CAT
Autore:
VIZZARD MA; STANDISH A; AMMONS WS;
Indirizzi:
UNIV PITTSBURGH,SCH MED,DEPT PHARMACOL,13TH FLOOR BIOMED SCI TOWERS PITTSBURGH PA 15261 THOMAS JEFFERSON UNIV,DEPT PHYSIOL PHILADELPHIA PA 19107
Titolo Testata:
The American journal of physiology
fascicolo: 2, volume: 265, anno: 1993,
parte:, 2
pagine: 180000290 - 180000301
SICI:
0002-9513(1993)265:2<180000290:EORRSO>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPINAL NEURONS; RESPONSES; REFLEX; CHEMORECEPTORS; PROJECTIONS; AFFERENTS; INPUTS; NERVES; RATS;
Keywords:
RENAL NERVES; RENAL MECHANORECEPTORS; RENAL CHEMORECEPTORS; RENAL REFLEXES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
M.A. Vizzard et al., "EFFECTS OF RENAL RECEPTOR STIMULATION ON NEURONS WITHIN THE VENTROLATERAL MEDULLA OF THE CAT", The American journal of physiology, 265(2), 1993, pp. 180000290-180000301

Abstract

Experiments were performed to determine if activation of renal receptors by occlusion of the renal artery, renal vein, or ureter would alter activity of cells within the ventrolateral medulla of the cat. Extracellular unit recordings were obtained from 195 cells located within the rostral ventrolateral medulla of 90 a-chloralose-anesthetized cats. Fifty-five of 195 cells (28.2%) tested for responses to renal receptor activation responded to at least one of the occlusions. Occlusion ofthe ureter increased the activity of 25 cells from 9.7 +/- 3.7 to 23.0 +/- 6.5 impulses/s and decreased the activity of 5 cells from 11.9 +/- 3.6 to 3.5 +/- 1.2 impulses/s. Occlusion of the renal vein increased the activity of seven cells from 7.5 +/- 3.3 to 22.3 +/- 7.3 impulses/s and decreased the activity of six cells from 13.8 +/- 3.8 to 4.1 +/- 2.0 impulses/s. Renal artery occlusion elicited solely excitatory responses from 43 cells. Thirty-one of the 43 cells increased their activity within 0-3 s of the onset of renal artery occlusion from 4.1 +/-0.8 to 12.6 +/- 1.2 impulses/s. Renal artery occlusion increased the activity of 10 out of 43 cells with a mean latency of 26.1 +/- 6.5 s from 8.3 +/- 2.5 to 29.6 +/- 9.3 impulses/s. Twenty-four of the 55 (43.6%) responders were responsive to two or more forms of renal receptor activation. These results demonstrate that activation of renal mechanoreceptors and chemoreceptors affects cells within the ventrolateral medulla of the cat. Therefore, these cells could participate in renorenal and systemic reflexes originating from mechanoreceptors and chemoreceptors within the kidney. In addition, the results suggest some differences in the organization of renal information at the spinal cord and medullary levels.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 18:58:33