objective(s) achillea genius is widely used in traditional medicine for gastrointestinal disorders. the aim of this study was to investigate the effects of aqueous-ethanol extract of achillea wilhelmsii on rat’s gastric motility in basal and vagal stimulated conditions. materials and methods twenty four wistar rats were randomly divided into two groups: control and test. the extract was prepare...

The participation of the parasympathetic and sympathetic nerves in the canine gallbladder motility was examined. Efferent stimulation of the parasympathetic (vagus) and sympathetic (celiac) nerves caused contraction or inhibition of the neck, body and fundus of the gallbladder. The contractile response induced by vagus nerve stimulation was reduced by subthreshold efferent stimulation of the ce...

The importance of vagus nerves to the heart rate, contractile force, blood pressure, and incidence of fatal arrhythmias produced by occlusion of the anterior descending branch of the left coronary artery was studied in chloralose-anesthetized cats. Occlusion performed in 20 animals with intact vagus nerves produced significant decreases in heart rate (23 + 5.3 beats/min), contractile force (23 ...

It has already been reported by many authors that the motor center of the stomach is located in dorsal nucleus alae cinerea(the dorsal nucleus of the vagus nerve)in the medulla oblongata5), and that the motor pathways to the stomach from medulla are contained only in the vagus nerves6,10). However, as it was previously reported by one of the present authors, regarding the augmented motor reflex...

A set of equations is described which permit prediction of the time course of heart rate in a dog anesthetized with pentobarbital from the time course of frequency of stimuli applied to the distal cut ends of vagus and sympathetic efferent nerves to the heart. These equations, although based on assumptions as to the physiological mechanisms involved, were only tested for their ability to descri...

BACKGROUND Vagus nerve stimulation is increasingly applied to treat epilepsy, psychiatric conditions and potentially chronic heart failure. After implanting vagus nerve electrodes to the cervical vagus nerve, side effects such as voice alterations and dyspnea or missing therapeutic effects are observed at different frequencies. Cervical vagus nerve branching might partly be responsible for thes...

Stimulation of peripheral cranial nerves has been shown to exert anticonvulsant effects in animal models as well as in human patients. Specifically, stimulation of both the trigeminal and vagus nerves has been shown in multiple clinical trials to be anticonvulsant, and stimulation of these nerves at therapeutic levels does not cause pain or negatively affect brain function. However, the neurona...

Bilateral mediastinal vagus neurogenic tumors are very rare. We herein report the case of Neurofibromatosis type 1 (NF-1) patient with bilateral neurofibromas originating from the mediastinal vagus just distal site of the recurrent nerve, who underwent two-staged extirpations that successfully preserved both recurrent nerves. A 31-year-old female with a history of NF-1 was admitted to our hospi...

neurolymphomatosis is a rare manifestation of non-hodgkin lymphoma characterized by infiltration of peripheral nerves, nerve roots, plexus and cranial nerves by malignant lymphocytes. this report presents positron emission tomography/computed tomography (pet/ct)imaging with 2-deoxy-2-18f-fluoro-d-glucose (18f-fdg) in 3 cases of non-hodgkin lymphoma with nerve infiltration, including one newly d...