نتایج جستجو برای: sympathetic nerves

تعداد نتایج: 55045  

Journal: :Hypertension 2006
Murray Esler David Kaye

In human and experimental models of heart failure there is widespread change in the sympathetic nervous system. This involves preferential activation of the sympathetic nervous outflow to the heart, impairment of norepinephrine reuptake by sympathetic nerves, and reduction of the content of norepinephrine in the failing myocardium, attributable in part to sympathetic neuronal rarefaction.1–4 Mi...

Journal: :The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society 2004
Antonio Giordano Andrea Frontini Mario Castellucci Saverio Cinti

Brown adipose tissue (BAT) is richly provided with sympathetic noradrenergic nerves but is believed to lack a parasympathetic nerve supply. Acetylcholine is the predominant transmitter of postganglionic parasympathetic nerves. The vesicular acetylcholine transporter (VAChT) resides in synaptic vesicles of cholinergic nerve terminals and is used as a marker for peripheral cholinergic nerves. We ...

Journal: :American journal of physiology. Heart and circulatory physiology 2015
Loc V Thang Stacie L Demel Robert Crawford Norbert E Kaminski Greg M Swain Nico Van Rooijen James J Galligan

We tested the hypothesis that vascular macrophage infiltration and O2 (-) release impairs sympathetic nerve α2-adrenergic autoreceptor (α2AR) function in mesenteric arteries (MAs) of DOCA-salt hypertensive rats. Male rats were uninephrectomized or sham operated (sham). DOCA pellets were implanted subcutaneously in uninephrectomized rats who were provided high-salt drinking water or high-salt wa...

Journal: :The Anatomical record 1971
J K Avery D S Strachan R E Corpron C F Cox

This study was carried out to determine the effects of dener-vation of the pulp organs of teeth, particularly on the odontoblasts and their processes. Therefore, resection of the inferior alveolar, cervical sympathetic, or a combination of both types of nerves supplying the mandibular incisor teeth of New Zealand white rabbits was performed and the results compared to adjacent , unaltered teeth...

2005
Anthony J. Minisi Marc D. Thames

Background. Left ventricular sympathetic afferent nerves are located mainly in superficial epicardial layers. Reflex excitatory responses mediated by sympathetic afferent nerves have been observed during myocardial ischemia in cats and humans but not in dogs. Previous canine studies have induced ischemia by occlusion of a coronary artery. Extensive collateral circulation in the canine heart may...

Journal: :JOP : Journal of the pancreas 2002
Beatrice Salvioli Monica Bovara Giovanni Barbara Fabrizio De Ponti Vincenzo Stanghellini Marcello Tonini Stefania Guerrini Cesare Cremon Marzia Degli Esposti Magdalina Koumandou Roberto Corinaldesi Catia Sternini Roberto De Giorgio

The innervation of the digestive tract, which is known to control a wide array of functions including smooth muscle contractility, splanchnic microcirculation, epithelial cell absorption/secretion and endocrine secretion, is composed of an intrinsic component consisting of neuronal cell bodies and nerve processes of the enteric neurons (i.e., the enteric nervous system) and an extrinsic compone...

Journal: :Journal of musculoskeletal & neuronal interactions 2014
K S Lips V Kauschke S Hartmann U Thormann S Ray M Schumacher M Gelinsky S Heinemann T Hanke A R Kautz M Schnabelrauch G Szalay C Heiss R Schnettler V Alt O Kilian

OBJECTIVES Bone is innervated by autonomic nervous system that consists of sympathetic and parasympathetic nerves that were recently identified in bone. Thus we asked whether parasympathetic nerves occur in bone defects and at the interface of substitution materials that were implanted for stabilization and improvement of healing in an osteoporosis animal model. METHODS Osteoporosis was induc...

Journal: :The Journal of experimental biology 1990
G M Malvin C Riedel

To gain a better understanding of the regulation of cutaneous blood flow in the bullfrog, the vascular innervation, vasoactivity and adrenoceptor types of the cutaneous vasculature were investigated using a pump-perfused skin preparation. Stimulation of cranial nerve I, the vagal ganglion, sympathetic ganglion 1 and sometimes sympathetic ganglion 2 caused cutaneous vascular resistance (CVR) to ...

Journal: :The Journal of clinical investigation 1980
S E Chesrown C S Venugopalan W M Gold J M Drazen

To determine if electrical stimulation of autonomic nerves could excite nonadrenergic inhibitory motor pathways in the guinea pig respiratory system in vivo, we studied the effects of electrical stimulation of the cervical vagi and sympathetic nerve trunks on pressure changes (P(p)) within an isolated, fluid-filled cervical tracheal segment which reflected changes in trachealis muscle tone. We ...

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