pertaining to nerve fibers that are not covered with a myelin sheath
Word origin
[1915–20; un-1 + myelinated]This word is first recorded in the period 1915–20. Other words that entered Englishat around the same time include: GI, collage, decoder, feedback, takeoutun- is a prefix meaning “not,” freely used as an English formative, giving negative oropposite force in adjectives and their derivative adverbs and nouns (unfair; unfairly; unfairness; unfelt; unseen; unfitting; unformed; unheard-of; un-get-at-able), and less freely used in certain other nouns (unrest; unemployment)
Examples of 'unmyelinated' in a sentence
unmyelinated
We also distinguished the chemical profile of myelinated and unmyelinated bladder sensory neurons.
Shelley L Forrest, Peregrine B Osborne, Peregrine B Osborne, Janet R Keast, JanetR Keast 2013, 'Characterisation of bladder sensory neurons in the context of myelination, receptorsfor pain modulators, and acute responses to bladder inflammation', Frontiers in Neurosciencehttp://journal.frontiersin.org/Journal/10.3389/fnins.2013.00206/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Different classes of unmyelinated nerve fibers appear to exhibit distinct conductive properties.
Matthias Ringkamp, Lisa M Johanek, Jasenka Borzan, Timothy V Hartke, Gang Wu, EstherM Pogatzki-Zahn, James N Campbell, Beom Shim, Raf J Schepers, Richard A Meyer 2010, 'Conduction properties distinguish unmyelinated sympathetic efferent fibers and unmyelinatedprimary afferent fibers in the monkey.', PLoS ONEhttp://europepmc.org/articles/PMC2816714?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Acetylcholinesterase staining was used to distinguish between the myelinated and unmyelinated motor and sensory nerves.
Xiu-xiu Zhang, Yu-hui Kou, Xiao-feng Yin, Bao-guo Jiang, Pei-xun Zhang 2017, 'Short-term observations of the regenerative potential of injured proximal sensorynerves crossed with distal motor nerves', Neural Regeneration Researchhttp://www.nrronline.org/article.asp?issn=1673-5374;year=2017;volume=12;issue=7;spage=1172;epage=1176;aulast=Zhang. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The cardioinhibitory functions are subserved by small myelinated and large unmyelinatedfibers.
Ruei-Feng Chen, Pai-Feng Yang, Chiung-Hsiang Cheng, Jui-Hsiang Hsieh, Chen-Tung Yen 2018, 'Vagal control of the heart in the turtle, Ocadia sinensis', Taiwaniahttp://tai2.ntu.edu.tw/taiwania/abstract.php?type=abstract&id=1575. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Among these, 86% were unmyelinated and 14% were myelinated fibers.
Ruei-Feng Chen, Pai-Feng Yang, Chiung-Hsiang Cheng, Jui-Hsiang Hsieh, Chen-Tung Yen 2018, 'Vagal control of the heart in the turtle, Ocadia sinensis', Taiwaniahttp://tai2.ntu.edu.tw/taiwania/abstract.php?type=abstract&id=1575. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Ultrastructural study of the peripheral nerves demonstrates loss of the unmyelinated and small myelinated fibers.
G P Prashanth, Mahesh Kamate 2012, 'A case of hereditary sensory autonomic neuropathy type IV', Annals of Indian Academy of Neurologyhttp://www.annalsofian.org/article.asp?issn=0972-2327;year=2012;volume=15;issue=2;spage=134;epage=136;aulast=Prashanth. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
We segment the cortex into myelinated and unmyelinated gray matter.
Eyesha eHashim, Christopher D Rowley, Sharon eGrad, Nicholas A Bock 2015, 'Patterns of myeloarchitecture in lower limb amputees: an MRI study', Frontiers in Neurosciencehttp://journal.frontiersin.org/Journal/10.3389/fnins.2015.00015/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Significantly, very thinly myelinated axons and groups of unmyelinated axons were observed indicating regenerative efforts.
Aurora Messina, Natasha Van Zyl, Michael Weymouth, Stephen Flood, Andrew Nunn, CatherineCooper, Jodie Hahn, Mary P. Galea 2016, 'Morphology of Donor and Recipient Nerves Utilised in Nerve Transfers to Restore UpperLimb Function in Cervical Spinal Cord Injury', Brain Scienceshttp://www.mdpi.com/2076-3425/6/4/42. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Unmyelinated olfactory afferents of the lamina propria seem less affected than ensheathing cells.
Marina Hovakimyan, Anja Meyer, Jan Lukas, Jiankai Luo, Volker Gudziol, Thomas Hummel,Arndt Rolfs, Andreas Wree, Martin Witt 2013, 'Olfactory deficits in Niemann-Pick type C1 (NPC1) disease.', PLoS ONEhttp://europepmc.org/articles/PMC3877006?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
However, we could not fully explain the different conductive patterns in unmyelinated and myelinated nerves with these theories.
Tetsuya Akaishi 2018, 'Nerve conduction models in myelinated and unmyelinated nerves based on three-dimensionalelectrostatic interaction', Neural Regeneration Researchhttp://www.nrronline.org/article.asp?issn=1673-5374;year=2018;volume=13;issue=5;spage=779;epage=785;aulast=Akaishi. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)