نتایج جستجو برای: nerve fibers
تعداد نتایج: 219812 فیلتر نتایج به سال:
Although the pelvic autonomic plexus may be considered a mixture of sympathetic and parasympathetic nerves, little information on its composite fibers is available. Using 10 donated elderly cadavers, we investigated in detail the topohistology of nerve fibers in the posterior part of the periprostatic region in males and the infero-anterior part of the paracolpium in females. Neuronal nitric ox...
Perivascular innervation of the mesenteric arteries of 7-week-old and 6-month-old spontaneously hypertensive rats and normotensive Wistar-Kyoto rats was examined. The densities of neuropeptide Y-containing nerve fibers and adrenergic nerve fibers were increased in the distal regions of mesenteric arteries of spontaneously hypertensive rats as compared with findings in Wistar-Kyoto rats. However...
Acknowledgements: The authors are grateful to Dr. Peter Reeh for comments and critical review of this manuscript. ABSTRACT Afferent A-and C-fibers regenerating into a nerve following peripheral nerve injury are exposed to inflammatory mediators released by Schwann cells, resident and invading macrophages and other inflammatory cells. Here we tested the hypothesis that ongoing and evoked activit...
The periodontal ligament has a rich sensory nerve supply which originates from the trigeminal ganglion and trigeminal mesencephalic nucleus. Although various types of mechanoreceptors have been reported in the periodontal ligament, the Ruffini ending is an essential one. It is unknown whether the distribution of periodontal nerve fibers in deciduous teeth is identical to that in permanent teeth...
An analysis has been made of the effect of ammonium and of lithium ions upon frog nerve deprived of sodium. Ammonium ions cannot substitute for sodium ions and restore the excitability of the nerve fibers; nor can they increase the L fraction of the membrane potential and the efficiency of the nerve reaction. Certain observations, however, indicate that the presence of ammonium ions outside the...
We present a rare case of traumatic lesion the tibial fibers sciatic nerve with spared peroneal fibers. A 33-year-old victim three month earlier stabbing attack came to our attention gait impairment and weakened left foot plantar flexion internal rotation supination. Based upon clinical signs neurophysiological investigations we suspected that injury had occurred. Ultrasound examination detecte...
Nerves containing numerous Schwann but their satellite Schwann cells appear cells can be found in bone marrow with well stained. Histological, cytological routine histological methods. Thin nerve and ultrastructural characteristics of these bundles and single nerve fibers containcells are described in detail. Blooding Schwann cells can be identified histoforming cells and nerve fibers with thei...
Calcium phosphate cement (CPC) is a bioactive ceramic substance. To clarify the effects of CPC on the peripheral nerve, we applied CPC on the peripheral nerve fibers of experimental animals and investigated the nerve fibers by electron microscopy and by immunoblotting analysis using an anti-myelin-associated glycoprotein (anti-MAG) antibody. The results showed that there was neither axonal spro...
The effect of rapid as well as sustained compressive forces applied to the surface of intact and severed peroneal nerves of rabbits was studied. Considerable effort was taken to ensure a quantitative and consistent experimental paradigm. Stimuli were delivered to the sciatic nerve, and the compound action potential was recorded in the peroneal nerve, with compressive forces applied more proxima...
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