Tib neeg lub cev metabolize nicotine cov khoom lag luam?
Apr 17, 2025
Tso lus
Nicotine yog ib qho alkaloid pom hauv cov nroj tsuag kom luam yeeb thiab muaj lub cev muaj zog heev. Cov metabolic tus nqi cuam tshuam rau cov neeg muaj yees, ntev, thiab kev siv Nicotine ntawm lub cev plab hnyuv siab raum ntawm lub cev plab hnyuv siab raum. Kab lus no yuav nkag siab txog lub cev tib neeg lub cev metabolizes los ntawm ntau qhov ntev, thiab kev sib txawv ntawm kev sib txawv, thiab muaj cov kws kho mob muaj feem xyuam.
Kev haus luam yeeb:Nicotine nkag mus rau hauv lub ntsws los ntawm kev haus luam yeeb, nkag mus rau cov ntshav ncig, thiab mus txog rau lub hlwb hauv ob peb feeb.
E-luam yeeb:Nqus tau nyob rau hauv daim ntawv ntawm aerosols, txawm hais tias zoo ib yam li txoj kev haus luam yeeb, nicotine tso tawm thiab tus nqi nqus tau txawv rau cov txheej txheem cua sov sib txawv.
Nicotine Hnab:Maj mam tso tawm nicotine los ntawm qhov ncauj mucosa thiab nkag mus rau cov ntshav, uas yog qhov ruaj khov dua li nqus tau.
Qhov sib txawv ntawm kev nqus thiab kev zom thiab kev zom thiab cov lus dag nqus feem ntau yog nyob rau hauv qhov nrawm thiab ua tau zoo ntawm kev nkag mus rau cov ntshav. Inhalation tuaj yeem nce cov nicotine concentration hauv cov ntshav, yog li nrawm nrawm ntawm lub hlwb thiab kev siv sia. Cov kev sib txawv no ua ntau hom nicotine cov khoom lag luam txawv nyob rau hauv cov nqe lus ntawm kev quav kev muaj peev xwm thiab kev siv kev siv.
Main cov plab hnyuv siab raum rau nicotine metabolism
Tom qab tib neeg lub cev ua noj ua haus nicotine, nws yog tsuas yog metabolized los ntawm daim siab. Muaj cov txheej txheem enzyme tseem ceeb hauv daim siab, cy hyp2a6, uas yog lub luag haujlwm rau feem ntau ntawm cov metabolatism ntawm nicotine.
Txawm hais tias lub siab yog lub zog tseem ceeb, lwm cov nruab nrog, lwm cov nruab nrab kuj tseem ua lub luag haujlwm hauv kev thauj thiab ua kom zoo nkauj ntawm Nicotine:
Lub ntsws:Raws li thawj qhov nres ntawm kev nqus tau txoj hauv kev, lub ntsws tseem muaj kev cuam tshuam nrog kev hloov dua siab tshiab.
Lub raum:Nicotine metabolites tau tshwm sim los ntawm cov zis los ntawm cov zis, thiab lub raum ua si yog lub luag haujlwm tseem ceeb hauv kev rho tawm.
Cov tawv nqaij thiab hws cov qog:Tsawg tsawg zaus, nicotine lossis nws cov metabolites kuj tseem ua tau zoo los ntawm hws.
Cov khoom lag luam metabolic tau tsim los ntawm cov khoom lag luam nicotine sib txawv yog feem ntau muaj lub siab xav hauv lub siab, thiab yuav tsum tau siv nrog cov siab ua haujlwm tsis zoo.
Cov metabolism ntawm nicotine nyob rau hauv tib neeg lub cev feem ntau nyob ntawm CYP2A6 enzyme system, uas catalyalzes hloov dua siab tshiab ntawm nicotine rau Cotinine. Cov txheej txheem metabolic no tau muab faib ua cov kauj ruam hauv qab no:
Nicotine is oxidized to nicotine-1'-N-oxide or nicotine imine by CYP2A6.
Cov khoom nruab nrab tau hloov pauv ntxiv rau hauv Cotinine.
Cotinine yog metabolized rau hauv cov khoom xws li hydroxotinine thiab Cotinine-n-oxide-n-oxide-n-oxide, thiab yog thaum kawg, thiab thaum kawg tau ua tiav ntawm lub cev hauv cov zis.
Cotinine yog cov metabotine zoo tshaj plaws, nrog cov ntshav ib nrab-lub neej ntawm {}}}}}}} Yog li ntawd, pom cov concentration ntawm Cotinine hauv lub cev tuaj yeem ntsuas ntsuas qhov tseeb thiab ntau zaus ntawm kev siv cov khoom lag luam nicotine.
Cov metabolic tus nqi ntawm nicotine txawv ntawm ib tus neeg mus rau lwm tus thiab cuam tshuam los ntawm ntau yam:
Lub caj yam caj ces:Qhov kev ua si ntawm Cypress CYN2A6 tau txawv los ntawm haiv neeg, tub los ntxhais thiab hnub nyoog. Piv txwv li, kev ua si ntawm CYP2A6 yog tsawg hauv East Esxias cov neeg Esxias, ua rau qeeb qeeb metabolism; Cov poj niam feem ntau yog metabolize sai dua vim yog cov tshuaj hormones cuam tshuam.
Kev noj haus thiab tshuaj:Qee cov tshuaj xws li Rifampicin thiab phenytoin sodium tuaj yeem ua rau CYP enzyme kev ua; Cov khoom noj muaj protein ntau los yog dej cawv kuj tuaj yeem cuam tshuam rau cov metabolic tus nqi.
Daim siab ua haujlwm:Cov neeg mob uas muaj tus kab mob siab tau them tus kab mob cany kev sib tawm thiab txo peev xwm me me.
Raws li cov metabolic tus nqi, cov neeg tuaj yeem faib ua "cov metabolizizizers ceev)" thiab "qeeb metabolizers". Tom qab siv cov khoom lag luam nicotine, cov metabolizizizers nrawm tau txo qis hauv lawv cov ntshav, uas yuav ua rau muaj kev siv ntau dua thiab nce ntxiv; Thaum qeeb metabolizers yuav fim ntau cov teebmeem kev siv sia ntev.
Cov metabolic tus nqi ntawm nicotine yog ze rau nws cov quav. Cov kev tshawb fawb pom tau tias kev nce siab heev thiab caij nplooj zeeg ntawm lub hlwb kom txhawb nqa lub hlwb yuav ua rau muaj kev txaus siab "
Cov metabolizizizer sai:Lub nicotine concentration hauv cov ntshav sai, thiab lub hlwb pom "tsis muaj" ntau dua, yog li nws yooj yim dua los txhim kho cov quav phem.
Qeeb metabolizers:Nicotine hauv cov ntshav tseem nyob ntev, tshem tawm cov tsos mob me me, thiab kev cia siab tsis yooj yim rau daim ntawv.
Tswj cov metabolic tus nqi (xws li siv cyp2a6 inhibitors) yuav tsum tau los ua txoj kev tshiab rau kev haus luam yeeb kho kom zoo rau yav tom ntej. Tsis tas li ntawd, cov neeg muaj cov tshuaj sib txawv tau muaj cov tshuaj sib txawv hnyav rau cov khoom lag luam nicotine, uas yuav tsum tau siv tus kheej.
Hauv cov ntsiab lus, cov metabolism ntawm tib neeg lub cev yog cov txheej txheem nyuaj siab nrog cov khoom tseem ceeb thiab thaum kawg Cotinine yog cov khoom tseem ceeb yog cov khoom tseem ceeb thiab ua rau lub cev tso zis. Rau cov neeg siv khoom, lawv yuav tsum xaiv cov khoom lag luam nicotine uas tsim nyog raws li lawv tus kheej cov yam ntxwv metabolic, kev yees kev pheej hmoo txaus ntshai thiab kev noj qab haus huv.
Xa kev nug