![Yuav ua li cas perforin ua rau tuag ntawm lub xovtooj ntawm tus kabmob? Yuav ua li cas perforin ua rau tuag ntawm lub xovtooj ntawm tus kabmob?](https://i.answers-medical.com/preview/medical-health/14143176-how-does-perforin-lead-to-the-death-of-an-infected-cell-j.webp)
Video: Yuav ua li cas perforin ua rau tuag ntawm lub xovtooj ntawm tus kabmob?
![Video: Yuav ua li cas perforin ua rau tuag ntawm lub xovtooj ntawm tus kabmob? Video: Yuav ua li cas perforin ua rau tuag ntawm lub xovtooj ntawm tus kabmob?](https://i.ytimg.com/vi/PcoHqJDBL9M/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Human T txoj cai hlwb tuaj yeem siv perforin txoj kev mus ua rau autologous lub hom phiaj cell tuag . Cytotoxic T lymphocytes thiab natural killer hlwb siv lub perforin /granzyme txoj hauv kev tua tus kab mob mob hlwb thiab qog hlwb . Kev hloov pauv hauv cov noob tseem ceeb rau txoj hauv kev no yog txuam nrog ntau tus tib neeg kab mob.
Zoo sib xws, yuav ua li cas perforin thiab granzyme tua cov kab mob sib kis?
Lawv induce programmed ntawm tes tuag (apoptosis) nyob rau hauv lub hom phiaj ntawm tes , yog li tshem tawm hlwb uas tau ua mob qog noj ntshav lossis muaj kab mob nrog kab mob lossis kab mob. Granzymes kuj tua kab mob thiab tiv thaiv kab mob sib kis. Hauv NK hlwb thiab T. hlwb , granzymes yog ntim hauv cytotoxic granules nrog perforin.
Tsis tas li ntawd, Perforins rhuav tshem cov hlwb txawv txav li cas? Polymerized perforin molecules tsim cov channel ua rau pub dawb, tsis xaiv, thauj passions ntawm ions, dej, cov tshuaj me me thiab cov enzymes. Qhov txiaj ntsig, cov channel cuam tshuam kev tiv thaiv kev tiv thaiv ntawm ntawm tes membrane thiab rhuav tshem kev ncaj ncees ntawm lub hom phiaj ntawm tes.
Hauv qhov no, txoj haujlwm ntawm perforin yog dab tsi?
Muaj nuj nqi . Perforin yog lub pore tsim cytolytic protein pom nyob rau hauv granules ntawm cytotoxic T lymphocytes (CTLs) thiab natural killer cells (NK cells). Thaum degranulation, perforin khi rau lub hom phiaj ntawm tes cov ntshav ntshav, thiab cov oligomerises nyob rau hauv Ca2+ yam ua kom tsim cov pores ntawm lub hom phiaj ntawm tes.
Puas yog perforin ib qho cytokine?
NK hlwb muaj npe nrov rau lawv lub peev xwm los tua cov kab mob kis los yog hloov cov tswv tsev los ntawm kev tso tawm cytotoxic granules uas muaj granzymes thiab perforin . Peb qhia tias cytokines IFN-gamma thiab TNF raug muag thiab zais ntawm txoj kev sib txawv dua li perforin.
Pom zoo:
Yuav ua li cas sodium ions tau rov qab mus rau hauv lub xovtooj ntawm tes thaum cov tshuaj sodium potassium tso lawv tawm?
![Yuav ua li cas sodium ions tau rov qab mus rau hauv lub xovtooj ntawm tes thaum cov tshuaj sodium potassium tso lawv tawm? Yuav ua li cas sodium ions tau rov qab mus rau hauv lub xovtooj ntawm tes thaum cov tshuaj sodium potassium tso lawv tawm?](https://i.answers-medical.com/preview/medical-health/13863745-how-do-sodium-ions-get-back-into-the-cell-once-the-sodium-potassium-pump-pumps-them-out-j.webp)
Lub twj tso kua mis sodium-potassium thauj sodium tawm ntawm thiab potassium mus rau hauv lub cell hauv kev rov ua dua ntawm kev hloov pauv (hloov pauv). Thaum sodium ions khi, lawv ua rau lub twj tso kua mis rau hydrolyze (zom) ATP. Ib pawg phosphate los ntawm ATP txuas nrog lub twj tso kua mis, uas yog tom qab ntawd tau hais tias yog phosphorylated
Dab tsi tuaj yeem ua rau muaj teeb meem ntawm lub xovtooj ntawm tes?
![Dab tsi tuaj yeem ua rau muaj teeb meem ntawm lub xovtooj ntawm tes? Dab tsi tuaj yeem ua rau muaj teeb meem ntawm lub xovtooj ntawm tes?](https://i.answers-medical.com/preview/medical-health/13872853-what-can-trigger-a-sickle-cell-crisis-j.webp)
Cov teeb meem nyuaj ntawm cov kab mob sib kis muaj xws li: hloov pauv qhov kub thiab txias, uas tuaj yeem ua rau cov hlab ntsha nqaim. ua haujlwm hnyav lossis ua haujlwm ntau dhau, vim tsis muaj oxygen. lub cev qhuav dej, vim cov ntshav qis
Yuav ua li cas ambient kub cuam tshuam tus nqi ntawm txias ntawm lub cev tom qab tuag?
![Yuav ua li cas ambient kub cuam tshuam tus nqi ntawm txias ntawm lub cev tom qab tuag? Yuav ua li cas ambient kub cuam tshuam tus nqi ntawm txias ntawm lub cev tom qab tuag?](https://i.answers-medical.com/preview/medical-health/13961296-how-does-ambient-temperature-affect-the-rate-of-cooling-of-a-body-after-death-j.webp)
Raws li koj cov txiaj ntsig, qhov kub ib puag ncig cuam tshuam rau qhov txias ntawm lub cev tom qab tuag li cas? Yog tias lub cev dyed hauv qhov kub dua li lub cev. Lub cev yuav nce qhov kub thiab txias. Thaum chav sov dua li lub cev kub lub cev yuav maj mam nce qhov kub kom txog thaum ntsuas hauv chav
Yuav ua li cas thiaj yuav yog tus poj niam kis tus mob herpes rau tus txiv neej?
![Yuav ua li cas thiaj yuav yog tus poj niam kis tus mob herpes rau tus txiv neej? Yuav ua li cas thiaj yuav yog tus poj niam kis tus mob herpes rau tus txiv neej?](https://i.answers-medical.com/preview/medical-health/14134069-how-likely-is-it-for-a-woman-to-pass-herpes-to-a-man-j.webp)
Qhov nruab nrab, kev pheej hmoo rau cov poj niam kis tus kab mob HSV-2 los ntawm tus khub muaj tus kab mob yog kwv yees li 10 feem pua hauv ib xyoos, txawm hais tias muaj ntau yam loj-los ntawm 7 feem pua mus rau 31 feem pua-hauv kev tshawb fawb sib txawv. Rau cov txiv neej tsis muaj kab mob, qhov kev pheej hmoo ntawm kev sib deev kis tau HSV-2 los ntawm tus poj niam muaj mob yog li 4 feem pua ntawm ib xyoos
Lub neej cia siab ntawm tus menyuam uas muaj tus kabmob Krabbe yog dabtsi?
![Lub neej cia siab ntawm tus menyuam uas muaj tus kabmob Krabbe yog dabtsi? Lub neej cia siab ntawm tus menyuam uas muaj tus kabmob Krabbe yog dabtsi?](https://i.answers-medical.com/preview/medical-health/14185995-what-is-the-life-expectancy-of-a-child-with-krabbe-disease-j.webp)
Kuj tseem hu ua globoid cell leukodystrophy, kab mob Krabbe ua rau cov paj hlwb nyob hauv lub hlwb thiab lub hauv nruab nrab lub paj hlwb ua rau lub cev puas. Cov menyuam mos uas muaj tus mob no muaj lub neej nyob ntev li 13 lub hlis