unmyelinated


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Related to unmyelinated: unmyelinated fibers

unmyelinated

[¦ən′mī·ə·lə‚nād·əd]
(histology)
Lacking myelin, either as a normal condition or as the result of a disease.
References in periodicals archive ?
The present study demonstrated that two neddylation-related proteins, DCUN1D2 and NEDD8, are concentrated at the paranodal myelin region as well as in the myelinated and unmyelinated Schwann cell bodies.
Rabchevsky, "Intraspinal sprouting of unmyelinated pelvic afferents after complete spinal cord injury is correlated with autonomic dysreflexia induced by visceral pain," Neuroscience, vol.
Groups of ganglion cells and bundles of unmyelinated nerve fibers are present between the muscle layers.
22,23) Exact mechanisms of action are not known, but coagulation likely denatures peripheral nerves, preventing conduction in small myelinated and unmyelinated nerve fibers until the nerve regenerates.
They show how unbiased stereology can be used to quantify a diverse range of neural structures from macroscopic studies of brain volumes on MRI images to detailed microstructures of unmyelinated nerve fibers.
Previous studies of our group (16) investigated the effects of estragole on myelinated fibers of the sciatic nerve with conduction velocity between 40 and 100 m/s; myelinated fibers with lower conduction velocities and unmyelinated fibers were not recorded.
The researchers also found reduced numbers of total and regenerating intraepidermal, unmyelinated nerve fibers in skin biopsies from the lower leg and upper thigh of the patients with fibromyalgia compared with the controls and the patients with depression.
Unmyelinated nociceptors of rat paraspinal tissues.
12 Johansson et al13 found that local methylprednisolone could suppress the nerve transmission in thin unmyelinated C-fibers at 30 min after its application.
3 Pain associated with nerve compression is mediated by unmyelinated, slow conducting C-fibres, which are normally inhibited by earlier-arriving fast impulses conducted by myelinated Ad fibres because mechanical compression appears to block the large Ad fibres more effectively.
The RNFL is composed primarily of unmyelinated axons that originate from the ganglion cells.
An unmyelinated neuron passing its electrical signal down the axon is analogous to the eraser being handed to each student in turn.