scholarly journals Neurones in a discrete region of the nucleus tractus solitarius are required for the Breuer-Hering reflex in rat.

1990 ◽  
Vol 427 (1) ◽  
pp. 261-280 ◽  
Author(s):  
A C Bonham ◽  
D R McCrimmon
Keyword(s):  
Nucleus Tractus Solitarius ◽  
Discrete Region

scholarly journals Effects of vasopressin on baroreceptor reflex in the area postreme and nucleus tractus solitarius

1997 ◽  
Vol 73 ◽  
pp. 89
Author(s):  
Keisuke Migita ◽  
Nobuaki Hori ◽  
Ryou Saito ◽  
Kenji Yamamoto ◽  
Yukio Takano ◽  
...  
Keyword(s):  
Nucleus Tractus Solitarius ◽  
Baroreceptor Reflex

Electrophysiological evidence that systemic angiotensin influences rat area postrema neurons

1990 ◽  
Vol 258 (1) ◽  
pp. R70-R76 ◽  
Author(s):  
S. Papas ◽  
P. Smith ◽  
A. V. Ferguson
Keyword(s):  
Nucleus Tractus Solitarius ◽  
Area Postrema ◽  
Cell Types ◽  
Male Rats ◽  
Ang Ii ◽  
Adrenergic Agonist ◽  
Arterial Blood ◽  
Spontaneous Activities ◽  
Single Unit Recordings ◽  
Body Fluid Balance

Extracellular single-unit recordings from neurons in the area postrema (AP) and the nucleus tractus solitarius (NTS) in anesthetized male rats demonstrated that most cells in these regions have spontaneous activities of 5 Hz or less. Systemic angiotensin (ANG II) (50-500 ng) enhanced the activity of 55% of AP cells tested (n = 76), whereas 53% of tested NTS neurons (n = 62) were inhibited by ANG II. To determine whether these neurons were influenced specifically by circulating ANG II or by the accompanying increase in mean arterial blood pressure (BP), the effects of adrenergic agonists given intravenously on ANG II influenced neurons were also examined. Subsequently two cell types were characterized: cells responding to iv ANG II but not to the adrenergic agonist ("ANG II sensitive") and cells responding in a similar way to both agents ("BP sensitive"). Most ANG II-responsive neurons in the AP (53.5%) and the NTS (65%) were determined to be BP sensitive. These data demonstrate that ANG II influences the activity of AP neurons. In addition, there exists a second population of AP neurons apparently responsive to perturbations of the cardiovascular system. These studies further emphasize the potential roles of the AP in the regulation of body fluid balance.

Behavioral analysis of anorexia produced by hindbrain injections of AMPA receptor antagonist NBQX in rats

2002 ◽  
Vol 282 (1) ◽  
pp. R147-R155 ◽  
Author(s):  
Huiyuan Zheng ◽  
Christiane Patterson ◽  
Hans-Rudolf Berthoud
Keyword(s):  
Nucleus Tractus Solitarius ◽  
Burst Size ◽  
Lick Rate ◽  
Ingestive Behavior ◽  
Receptor Subtypes ◽  
General Role ◽  
Motor Processing ◽  
Descending Facilitation ◽  
Response Measures ◽  
Integrative Process

The caudal brain stem integrates short-term feedback signals from the oral cavity and the food-handling abdominal viscera, as well as long-term homeostatic, cognitive, and emotional signals from the forebrain, to control ingestive behavior. Glutamate, acting on various receptor subtypes, plays a prominent role in this integrative process. Fourth ventricular injection of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA)/kainate receptor blocker 1,2,3,4-tetrahydro-6-nitro-2,3-dioxobenzo[ f]quinoxaline-7-sulfonamide (NBQX, 0.5–5 nmol/3 μl) dose dependently suppressed intake of 15% sucrose in food-deprived and non-food-deprived rats compared with saline injection. Two consecutive paired NBQX injections (5 nmol) into the fourth ventricle did not produce conditioned taste aversion to saccharin, but LiCl did. Intraburst lick rate and lick efficiency were not affected, but burst size and number and initial lick rate were significantly decreased by NBQX. Local injection of NBQX (2 nmol) into and near the nucleus tractus solitarius also suppressed sucrose intake. These results suggest a general role for non- N-methyl-d-aspartate receptors in the transmission of positive (feedforward) signals, but do not identify the exact processing step involved, such as taste input, sensory-motor processing, or descending facilitation. More localized injections and response measures will be necessary.

scholarly journals Anatomical and functional connections between the locus coeruleus and the nucleus tractus solitarius in neonatal rats

Neuroscience ◽  
2016 ◽  
Vol 324 ◽  
pp. 446-468 ◽  
Author(s):  
L.T. Lopes ◽  
L.G.A. Patrone ◽  
K.-Y. Li ◽  
A.N. Imber ◽  
C.D. Graham ◽  
...  
Keyword(s):  
Locus Coeruleus ◽  
Nucleus Tractus Solitarius ◽  
Neonatal Rats ◽  
Functional Connections

Synaptic and morphologic properties in vitro of premotor rat nucleus tractus solitarius neurons labeled transneuronally from the stomach

2003 ◽  
Vol 464 (4) ◽  
pp. 525-539 ◽  
Author(s):  
Nicholas R. Glatzer ◽  
Christian P. Hasney ◽  
Muthu D. Bhaskaran ◽  
Bret N. Smith
Keyword(s):  
Nucleus Tractus Solitarius
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