Vagus Nerve
Mostrando 1-12 de 164 artigos, teses e dissertações.
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1. Extracranial non-vestibular head and neck schwannomas: a case series with the review of literature
Abstract Introduction: Schwannomas are tumous that arise from Schwann cells. Schwannoma is one of the differential diagnosis for lateral neck swelling. Objective: In this study, we aim to describe the incidence, presenting clinical features and management of extracranial, non-vestibular schwannomas of head and neck region, along with the review of the lite
Brazilian Journal of Otorhinolaryngology. Publicado em: 2022
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2. A narrative review on invasive brain stimulation for treatment-resistant depression
While most patients with depression respond to pharmacotherapy and psychotherapy, about one-third will present treatment resistance to these interventions. For patients with treatment-resistant depression (TRD), invasive neurostimulation therapies such as vagus nerve stimulation, deep brain stimulation, and epidural cortical stimulation may be considered. We
Brazilian Journal of Psychiatry. Publicado em: 2022
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3. Treatment-resistant bipolar depression: concepts and challenges for novel interventions
Treatment-resistant bipolar depression (TRBD) has been reported in about one-quarter of patients with bipolar disorders, and few interventions have shown clear and established effectiveness. We conducted a narrative review of the published medical literature to identify papers discussing treatment-resistant depression concepts and novel interventions for bip
Brazilian Journal of Psychiatry. Publicado em: 2022
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4. Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation
Abstract Purpose: To investigate the role of vagus nerve activation in the protective effects of hypercapnia in ventilator-induced lung injury (VILI) rats. Methods: Male Sprague-Dawley rats were randomized to either high-tidal volume or low-tidal volume ventilation (control) and monitored for 4h. The high-tidal volume group was further divided into either
Acta Cir. Bras.. Publicado em: 25/11/2019
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5. Malignant peripheral nerve sheath tumor of the vagus nerve: an uncommon cause of progressive dyspnea
Radiol Bras. Publicado em: 2017-12
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6. The influence of distal colon irritation on the changes of cystometry parameters to esophagus and colon distentions
ABSTRACT The co-occurrence of multiple pathologies in the pelvic viscera in the same patient, such as, irritable bowel syndrome and interstitial cystitis, indicates the complexity of viscero-visceral interactions and the necessity to study these interactions under multiple pathological conditions. In the present study, the effect of distal colon irritation (
Int. braz j urol.. Publicado em: 2016-06
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7. Vagotomy ameliorates islet morphofunction and body metabolic homeostasis in MSG-obese rats
The parasympathetic nervous system is important for β-cell secretion and mass regulation. Here, we characterized involvement of the vagus nerve in pancreatic β-cell morphofunctional regulation and body nutrient homeostasis in 90-day-old monosodium glutamate (MSG)-obese rats. Male newborn Wistar rats received MSG (4 g/kg body weight) or saline [control (CTL
Braz J Med Biol Res. Publicado em: 24/02/2015
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8. Melanin-concentrating hormone and orexin A neuropeptidergic systems in the dorsal motor nucleus of the vagus nerve in rat / Sistema neuropeptidergico do hormonio concentrador de melanina e da orexina A no nucleo motor dorsal do nervo vago em rato
Melanin-concentrating hormone (MCH) and orexin-A (OXA) are neuromediators expressed in neurons distributed in the diencephalum, mainly in the lateral hypothalamic area, projecting nerve fibers to several parts of the central nervous system. These neuropeptides exert potent orexigenic activity, increasing feeding and controlling the energetic balance. Consequ
Publicado em: 2009
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9. Effect of 4-aminoantipyrine on gastric compliance and liquid emptying in rats
Dipyrone (Dp) delays gastric emptying (GE) in rats. There is no information about whether 4-aminoantipyrine (AA), one of its metabolites, has the same effect. The objectives of the present study were to assess the effects of AA and Dp on GE when administered intravenously (iv) and intracerebroventricularly (icv) (240 µmol/kg and 4 µmol/animal, respectively
Brazilian Journal of Medical and Biological Research. Publicado em: 06/06/2007
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10. Estudo da regeneração axonal em enxerto nervoso sensitivo (n.sural) autólogo a partir de nervo craniano intacto (n.vago) / Study of axonal regeneration into a sensitive spinal autologous graft (n. suralis) nerve from intact donor (n. vagus)
The end-to-side neurorrhaphy technique was used in order to study the possibility of nerve fiber growths from intact nerve (n. vagus) into a autologous nerve graft (n. suralis). Besides that, it was also studied the possible success by using a spinal nerve graft and a intact cranial nerve as donor. The grafts were harvested ten weeks post-surgical and submit
Publicado em: 2007
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11. Effect of antipyrine on the gastric emptying of liquid in rats
Antipyrine (At) and dipyrone (Dp) delay gastric emptying (GE) in rats. The objective of the present study was to assess the effects of intravenous (iv) and intracerebroventricular (icv) administration of At and Dp on the GE of liquid by rats. GE was assessed in male Wistar rats (5-10 in each group) 10 min after the icv or iv drug injection by measuring perce
Brazilian Journal of Medical and Biological Research. Publicado em: 22/09/2006
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12. Efeito da inibição da fosfodiesterase-5 sobre as propriedades de transdução dinâmica do nervo vago cardíaco em ratos espontaneamente hipertensos.
Recent data have reported that sildenafil citrate, an inhibitor of phosphodiesterase-5 (PDE-5), widely used in the treatment of erectile dysfunction, causes vasodilation and reflex sympathetic activation, which may enhance cardiovascular risk. However, the effects of sildenafil citrate on cardiac vagal parasympathetic control, in the arterial hypertension co
Publicado em: 2006