Afferent Sensory Nerves
Mostrando 1-12 de 29 artigos, teses e dissertações.
-
1. The gastroprotective effect of amifostine (ETHYOLÂ) on ethanol-induced gastric injury in rats: the role of non-protein sulfhydryl groups and afferent sensory nerves / Efeito gastroprotetor da amifostina (ETHYOLÂ) na lesÃo gÃstrica induzida por etanol em ratos: papel dos grupos sulfidrÃlicos nÃo-protÃicos e neurÃnios sensoriais aferentes
INTRODUÃÃO: A amifostina (WR-2721) tem sido largamente estudada como agente citoprotetor em diferentes ÃrgÃos e contra os mais diversos agressores do organismo humano. Recentemente, um efeito gastroprotetor deste fÃrmaco foi observado em modelo de lesÃo gÃstrica induzida por indometacina (MOTA et al., 2007). OBJETIVOS: Este trabalho investigou o efeit
Publicado em: 2008
-
2. Fever induction pathways: evidence from responses to systemic or local cytokine formation
The immune and central nervous systems are functionally connected and interacting. The concept that the immune signaling to the brain which induces fever during infection and inflammation is mediated by circulating cytokines has been traditionally accepted. Administration of bacterial lipopolysaccharide (LPS) induces the appearance of a so-termed "cytokine c
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-03
-
3. Airway sensory nerves: a burning issue in asthma?
Asthmatic subjects cough and bronchoconstrict to various agents known to stimulate sensory nerves. A population of sensory nerves, the C fibres, contain the neuropeptides substance P, neurokinin A (NKA), and calcitonin gene-related peptide (CGRP). Capsaicin, the principal ingredient of hot peppers, selectively stimulates C fibre afferents resulting in the re
-
4. Activation of large conductance potassium channels inhibits the afferent and efferent function of airway sensory nerves in the guinea pig.
Sensory nerves play an important role in airway disease by mediating central reflexes such as cough, and local axon reflexes resulting in the peripheral release of neuropeptides. We have tested whether the benzimidazolone compound, NS1619, an opener of large conductance calcium-activated potassium (BK Ca) channels, inhibits the activity of sensory fibers, an
-
5. Primary afferent depolarization of cat pudendal afferents during micturition and segmental afferent stimulation.
1. This investigation examined primary afferent depolarization (PAD) of perineal afferents during micturition and evoked by electrical stimulation of perineal, hindlimb cutaneous and muscle-nerves. PAD was inferred from changes in excitability of spinal terminals of single afferents in decerebrate and chloralose-anaesthetized paralysed male cats. Observation
-
6. Acute pandysautonomia and severe sensory deficit with poor recovery. A clinical, neurophysiological and pathological case study.
A patient with acute loss of autonomic functions and virtually all afferent functions of peripheral nerves is described. The course was chronic and the outcome fatal. The clinical course was followed with measurements of sensory thresholds and conduction velocities, autonomic tests and microneurographic recordings. Neuropathological changes were severe and l
-
7. Muscle but not cutaneous C-afferent input produces prolonged increases in the excitability of the flexion reflex in the rat.
Stimulation of cutaneous afferent fibres in the sural nerve and muscle afferent fibres in the gastrocnemius-soleus nerve at a strength that excites C axons produces a delayed and long-lasting burst of activity in posterior biceps femoris/semitendinosus flexor motoneurones. Following a 20 s stimulation at 1 Hz to the sural nerve the flexor motoneurones contin
-
8. `L'acropathie ulcéro-mutilante familiale' with involvement of the distal mixed nerves and long bones fractures
Two siblings are described with mutilating lesions of the feet and hands, with sensory disturbances and muscle amyotrophy. The motor and afferent nerve conduction velocities were at the lower limit of normal. The nerve action potentials disappeared, first with percutaneous stimulation of the fingers and later with more proximal direct nerve stimulation. Earl
-
9. A model of the detection of warmth and cold by cutaneous sensors through effects on voltage-gated membrane channels
Warmth and cold sensations are known to derive from separate warm and cold cutaneous thermoreceptors in the form of differentiated afferent nerves. The firing rate of warm-sensing nerves increases as the temperature increases; the firing rate of cold-sensing nerves increases if the temperature is reduced. I postulate that the primary sensitivity of the warm
The National Academy of Sciences.
-
10. Cardiovascular and ventilatory responses to dynamic exercise during epidural anaesthesia in man.
1. In order to evaluate the importance of afferent neural feedback from the working muscles for cardiovascular and ventilatory responses to dynamic exercise, epidural anaesthesia was induced at L3-L4. Six healthy males cycled for 20 min at 57% of maximum oxygen uptake and for 8-12 min at increasing work intensities until exhaustion at 238 +/- 30 W without as
-
11. The influence of contralateral primary afferents on Ia inhibitory interneurones in humans.
1. Contralateral influences on short latency reciprocal inhibition between wrist extensor and flexor muscles were investigated in twenty-two healthy volunteers. Reciprocal inhibition, probably mediated through the Ia inhibitory interneurone, was measured by conditioning the flexor carpi radialis (FCR) H reflex by weak stimulation of the ipsilateral radial ne
-
12. The composition and central projections of the internal auricular nerves of the dog.
The cranial components and central terminations of the sensory nerves supplying the concave surface of the puppy's pinna, namely, the rostral, middle and caudal internal auricular nerves (RIAN, MIAN and CIAN) were investigated using horseradish peroxidase retrograde and transganglionic labelling techniques. All the 3 internal auricular nerves received contri