Qhov txawv ntawm Anterograde thiab Retrograde Thauj

Cov txheej txheem:

Qhov txawv ntawm Anterograde thiab Retrograde Thauj
Qhov txawv ntawm Anterograde thiab Retrograde Thauj

Video: Qhov txawv ntawm Anterograde thiab Retrograde Thauj

Video: Qhov txawv ntawm Anterograde thiab Retrograde Thauj
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Qhov sib txawv tseem ceeb ntawm kev thauj mus los ntawm anterograde thiab retrograde yog tias kev thauj mus los anterograde txav cov ntaub ntawv ntawm lub cev mus rau presynaptic terminals thaum lub sij hawm retrograde thauj cov ntaub ntawv physiological rov qab mus rau lub cev ntawm lub cev los ntawm periphery.

Axonal thauj yog cov txheej txheem physiological uas thauj cov proteins thiab lwm yam khoom tsim los ntawm cov neurosome mus rau cov paj hlwb los ntawm cytoskeleton. Hauv cov lus yooj yim, nws yog cov txheej txheem uas cuam tshuam cov khoom hloov ntawm lub cev ntawm tes thiab lub axonal davhlau ya nyob twg ntawm cov neurons. Axons muaj peev xwm ntawm kev thauj mus los bidirectional. Raws li kev taw qhia ntawm cov khoom ntws, muaj ob pawg ntawm kev thauj mus los ntawm axonal: anterograde thiab retrograde axonal thauj. Hauv kev thauj mus los anterograde, cov ntaub ntawv raug thauj mus rau lub presynaptic terminals thaum nyob rau hauv retrograde thauj, cov ntaub ntawv raug thauj los ntawm periphery mus rau lub cell lub cev. Ntxiv mus, lub cev muaj zog kinesins pab txhawb kev thauj mus los anterograde thaum lub cev muaj zog dyneins pab txhawb kev thauj mus los.

Anterograde Transportation yog dab tsi?

Anterograde thauj yog ib qho ntawm ob hom kev thauj khoom axonal. Hauv kev thauj mus los anterograde, cov ntaub ntawv raug thauj mus rau cov khoom siv presynaptic. Los ntawm cov txheej txheem no, cov as-ham, organelles, thiab lwm yam molecules raug thauj los ntawm soma (lub cev ntawm tes) mus rau lub distal axon. Anterograde thauj tau yooj yim los ntawm cytoplasmic motors kinesins. Anterograde kev thauj mus los yog qhov tseem ceeb vim nws muab cov khoom sib txuas tshiab xws li cov enzymes koom nrog cov membrane, neurotransmitters, neuropeptides thiab membrane lipids, uas yog qhov tseem ceeb rau kev ua haujlwm ntawm lub paj hlwb thiab kev saib xyuas.

Qhov txawv ntawm Anterograde thiab Retrograde Thauj
Qhov txawv ntawm Anterograde thiab Retrograde Thauj

Daim duab 01: Anterograde thiab Retrograde Thauj

Kev Thauj Tsheb Thauj Mus Los yog dab tsi?

Retrograde thauj yog cov txheej txheem uas cov ntaub ntawv physiological thauj rov qab mus rau lub cev ntawm tes (soma) los ntawm periphery (axon). Cov txheej txheem no tso cai rau rov qab los ntawm daim nyias nyias mus rau lub cev ntawm lub cev kom degradation los ntawm cov kua qaub hydrolases tam sim no hauv lysosomes.

Qhov txawv tseem ceeb - Anterograde vs Retrograde Thauj
Qhov txawv tseem ceeb - Anterograde vs Retrograde Thauj

Daim duab 02: Kev thauj mus los rov qab

Cov khoom uas yuav tsum tau xa mus rau lysosomes hauv lub cev ntawm tes yog thauj los ntawm kev thauj mus los. Nws kuj yog ib txoj hauv kev tseem ceeb rau qee cov kab mob neurotropic kom nkag mus rau hauv nruab nrab lub paj hlwb. Retrograde thauj yog yooj yim los ntawm cytoplasmic motors dyneins. Dynein txav mus rau qhov kawg ntawm qhov kawg ntawm microtubule, uas yog taw qhia rau lub cev ntawm tes.

Dab tsi zoo sib xws ntawm Anterograde thiab Retrograde Thauj?

  • Anterograde thiab retrograde thauj yog ob pawg ntawm axonal thauj.
  • Cov txheej txheem no thauj cov ntaub ntawv los ntawm soma mus rau axon thiab los ntawm axon mus rau soma.
  • Cytoplasmic motors pab txhawb cov txheej txheem no.

Qhov txawv ntawm Anterograde thiab Retrograde Thauj yog dab tsi?

Anterograde thauj yog cov txheej txheem ntawm kev thauj cov khoom siv lub cev los ntawm lub cev ntawm lub cev mus rau axon thaum kev thauj mus los rov qab yog cov txheej txheem ntawm kev thauj cov khoom siv lub cev los ntawm axon mus rau lub cev ntawm tes. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm anterograde thiab retrograde thauj. Tsis tas li ntawd, lub cev muaj zog kinesins pab txhawb kev thauj mus los anterograde thaum cytoplasmic motor dyneins pab txhawb kev thauj mus los.

Ntxiv mus, lwm qhov sib txawv ntawm kev thauj mus los ntawm anterograde thiab retrograde yog tias cov khoom siv xws li cov enzymes koom nrog membranes, neurotransmitters, neuropeptides thiab membrane lipids raug thauj los ntawm kev thauj mus los ntawm anterograde thaum cov ntaub ntawv uas yuav tsum tau xa mus rau lysosomes hauv lub cev ntawm tes raug thauj los ntawm tsheb thauj mus los.

Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm anterograde thiab retrograde thauj.

Qhov sib txawv ntawm Anterograde thiab Retrograde Thauj hauv Tabular Form
Qhov sib txawv ntawm Anterograde thiab Retrograde Thauj hauv Tabular Form

Summary – Anterograde vs Retrograde Transport

Axonal thauj yog bidirectional. Raws li kev taw qhia, nws tuaj yeem yog anterograde thauj lossis rov qab thauj khoom. Anterograde kev thauj mus los suav nrog kev thauj khoom los ntawm soma mus rau axon distal. Nyob rau hauv sib piv, retrograde thauj yuav thauj khoom los ntawm distal cheeb tsam mus rau soma. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm anterograde thiab retrograde thauj. Lub cev muaj zog kinesins koom nrog hauv kev thauj mus los anterograde. Lub cev muaj zog dyneins koom nrog hauv kev thauj mus los.

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