Video: Dab tsi ua rau axonal degeneration?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Axonal degeneration tuaj yeem tshwm sim los ntawm ntau yam kev thuam tsis sib xws (Coleman, 2005). Piv txwv, nws tshwm sim hauv cov kab mob tshwj xeeb xws li ntau yam sclerosis , HSP, motor neuron disease, thiab Alzheimer's disease.
Ib yam li ntawd, tib neeg nug, axonal poob txhais li cas?
Mob lub cev muaj zog axonal neuropathy (AMAN) cov tsos mob yog ib qho kev hloov pauv ntawm Guillain -Barré syndrome. Nws yog ua rau pom kev tuag tes tuag taw thiab poob ntawm reflexes tsis hnov tsw poob . Pathologically, muaj yog lub cev muaj zog axonal degeneration nrog antibody-mediated tawm tsam ntawm lub cev nqaij daim tawv thiab nodes ntawm Ranvier.
Zoo sib xws, dab tsi yog qhov tsis zoo ntawm axon? Axonal degeneration yog txheej txheem kev khaws cia cov txheej txheem uas tuaj yeem qhib tau los ntawm kev txhawb nqa sib txawv suav nrog kev puas tsuaj ntawm lub tshuab, axonal thauj cov teeb meem lossis los ntawm cov tshuaj siv rau kev kho mob.
Yog li ntawd, dab tsi ua rau Wallerian degeneration?
Txhua qhov txhab ntawm axons uas ua rau muaj kev cuam tshuam thiab ib qho kev puas tsuaj ntawm lub paj hlwb lub cev uas ua rau lub cell tuag yog ua raws los ntawm Wallerian degeneration. Hauv CNS qhov tshwm sim feem ntau yog infarction, hemorrhage, qog , thiab raug mob taub hau nrog shearing ntawm paj hlwb.
Ntev npaum li cas Wallerian degeneration?
Wallerian degeneration yog cuam tshuam ntawm myelin thiab axons raws tag nrho qhov ntev ntawm cov hlab ntsha hauv qab qhov chaw ntawm mob . Cov tsos mob tshwm sim tam sim ntawd, tab sis nws yuav siv sijhawm 21 hnub rau kev hloov pauv tsis zoo los txhim kho ntawm koob EMG.
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