Hais txog luam yeeb, thawj qhov kev xav yuav yognicotine , ib qho ntawm nws cov ntsiab lus. Tsis tas li ntawd, qee cov tib neeg sib npaug nicotine nrog kev haus luam yeeb sib cav tias "kev haus luam yeeb ua rau muaj kev phom sij rau kev noj qab haus huv" vim tias nicotine hauv luam yeeb "Nicotine yog tshuaj lom heev"? “Nicotine hauv ib pob luam yeeb tuaj yeem tua tus nyuj "? “Tseem ceeb xaiv zaub uas muaj nicotine”…? Txhua yam kev xav txawv.
Tab sis qhov tseeb, cov lus thov no txawv ntawm kev tshawb fawb. Nicotine yog alkaloid ib txwm ua los ntawm qee cov nroj tsuag Solanaceae. Solanaceae nroj tsuag tsis tsuas yog haus luam yeeb, tab sis kuj peppers, txiv lws suav, qos yaj ywm, eggplant los yog petunia. Haus luam yeeb yog ib qho ntawm cov nroj tsuag nplua nuj nyob hauv nicotine. Tam sim no, nicotine kuj tseem siv rau hauv kev haus luam yeeb tsis haus luam yeeb, luam yeeb hluav taws xob, thiab kev kho nicotine hloov pauv.
nicotine puas tuaj yeem ua rau mob qog noj ntshav? Thaum tib neeg haus luam yeeb, tsawg kawg 69 cov tshuaj carcinogens uas muaj nyob rau hauv cov luam yeeb, xws li benzopyrene, ua rau muaj kev phom sij rau lub cev tom qab nkag mus rau tib neeg lub cev. Cov carcinogens no tsis suav nrog nicotine. Nicotine tsuas yog qhov tseem ceeb ntawm kev haus luam yeeb. Xyoo 2014 Asmeskas Tus Thawj Coj Saib Xyuas Kev Noj Qab Haus Huv tau taw qhia tias tam sim no tsis muaj pov thawj tias nicotine yog carcinogenic. US FDA kuj tau tshaj tawm meej meej hauv xyoo 2017 tias nicotine nws tus kheej tsis muaj kev sib raug zoo nrog mob qog noj ntshav.
Kev tshawb fawb soj ntsuam tam sim no hais txog nicotine txhawb tias nicotine tsis ua rau mob qog noj ntshav rau tib neeg.
Kev haus luam yeeb puas ua rau muaj nicotine lom? Thaum tib neeg haus luam yeeb, nicotine kuj nqus tau tib lub sijhawm. Cov nicotine inhaled yog kis los ntawm cov ntshav thiab dhau los ntawm cov ntshav-hlwb barrier. Nws siv sijhawm li 10 vib nas this kom ncav cuag lub hlwb qhov nruab nrab, ua rau lub hlwb tsim cov dopamine qab ntxiag thiab zoo siab thiab lwm yam Neurotransmitters. Objectively hais lus, nicotine muaj kev quav yeeb quav tshuaj thiab kev vam khom. Kev haus luam yeeb yog qhov tseeb tshwm sim los ntawm nicotine mus rau qhov loj. Lub toxicity ntawm nicotine yeej nyob ntawm ntau yam, suav nrog ntau npaum li cas, lub sijhawm, zaus, txoj kev raug, hom khoom nicotine thiab qhov sib txawv ntawm tus kheej. Cov koob tshuaj nicotine noj los ntawm kev haus luam yeeb muaj kev nyab xeeb rau tib neeg lub cev, thiab nws tsis yooj yim rau kev ua tiav cov tshuaj uas yuav tsum tau ua kom muaj cov tshuaj lom neeg mob, thiab ib nrab-lub neej ntawm nicotine hauv lub cev yog luv heev, tsuas yog 2 mus rau 3 teev, uas ua rau nqus tau cov nicotine nyob rau hauv ib lub sij hawm luv luv Nws yuav metabolized.
Puas yog nicotine tsim teeb meem rau tus menyuam hauv plab? Nicotine yooj yim hla lub placental barrier. Qhov concentration ntawm nicotine nyob rau hauv fetal ntshav (30 feeb tom qab kis tau) yog 15% siab tshaj leej niam plasma, thiab cov concentration ntawm nicotine nyob rau hauv amniotic kua yog 80% siab tshaj leej niam plasma. Qhov tshwm sim no yuav ua rau lub hlwb fetal siab Qib nicotine, uas ua rau muaj kev hloov pauv hauv lub paj hlwb.
Xyoo 2014 Tebchaws Asmeskas "Tus Thawj Coj Saib Xyuas Kev Noj Qab Haus Huv" tau taw qhia tias tam sim no muaj pov thawj txaus tias kev raug nicotine tuaj yeem cuam tshuam rau kev noj qab haus huv ntawm tus menyuam hauv plab, xws li yug ntxov ntxov lossis tseem yug menyuam. Ntau qhov kev tshawb fawb tau pom tias nicotine muaj qee yam cuam tshuam rau kev ua tsis zoo ntawm tus menyuam hauv plab, kev txwv kev loj hlob hauv plab, kev tuag perinatal thiab kev tuag ntawm tus menyuam mos. Kev raug nicotine ua ntej yug menyuam tuaj yeem ua rau muaj qhov txawv txav ntawm lub ntsws hauv plab, ua rau muaj kev pheej hmoo ntawm mob hawb pob thiab mob ntsws ntsws ntev. Niam txiv raug nicotine tuaj yeem txhim kho qib ntawm kev quav tshuaj nicotine ntawm cov xeeb ntxwv thiab cuam tshuam rau tus cwj pwm ntawm cov xeeb ntxwv.
Kuv puas tuaj yeem noj zaub uas muaj nicotine? Qee cov tswv cuab ntawm cov pej xeem txhawj xeeb tias kev noj zaub mov uas muaj nicotine tuaj yeem cuam tshuam rau lub cev. Qhov tseeb, tsis tas yuav txhawj xeeb. Ntawm ib sab, cov ntsiab lus nicotine hauv cov zaub no tsawg heev, feem ntau yog 3 ~ 100μg / kg. Yog li me ntsis cov ntsiab lus nicotine yog qhov tsis txaus ntseeg kiag li. Txawm hais tias nws yog nyoos los yog siav, nws yuav tsis cuam tshuam rau tib neeg lub cev.
Ntawm qhov tod tes, qhov ncauj nicotine yog qhov nyuaj rau nqus los ntawm lub plab, vim tias qhov chaw acidic ntawm lub plab yuav ua rau cov nicotine ntau dua nyob rau hauv lub xeev ionized, uas tsis yooj yim rau absorbed los ntawm mucosal epithelium. Txawm hais tias nicotine tau nkag mus rau hauv cov hlab ntshav los ntawm txoj hnyuv, nws yuav rov qab mus rau lub siab los ntawm cov hlab ntsha portal rau cov metabolism, uas ua rau cov ntshav plasma qis ntawm nicotine tom qab nkag mus rau hauv lub cev thiab txo qis hauv nicotine bioavailability. Yog li ntawd, cov pej xeem tsis tas yuav tham txog kev hloov xim ntawm nicotine hauv zaub, thiab tsis tas yuav txhawj xeeb txog nws txoj kev hem thawj rau kev noj qab haus huv.
Puas yog nicotine hloov kho kev nyab xeeb? Nicotine replacement therapy yog ib daim ntawv uas tsis yog haus luam yeeb ntawm cov tshuaj nicotine tsawg uas hloov cov nicotine tau los ntawm kev haus luam yeeb thiab pab cov neeg haus luam yeeb kov yeej lawv lub cev thiab lub siab lub ntsws ntawm kev haus luam yeeb. Nws tau siv thaum ntxov li xyoo 1980s Yu txiav luam yeeb. Ntau tus neeg txhawj xeeb txog seb puas muaj nicotine hloov kho tuaj yeem paub tseeb.
Alkaline hloov kho raws li thawj-kab kho mob kev haus luam yeeb haus luam yeeb tau ntau dua ob npaug ntawm kev ua tiav ntawm kev haus luam yeeb.
Kev nyab xeeb ntawmnicotine Kev hloov kho tau raug lees paub, thiab nws tau muab ntxiv rau hauv Lub Koom Haum Saib Xyuas Kev Noj Qab Haus Huv Hauv Ntiaj Teb Cov Tshuaj Tseem Ceeb, thiab tau lees paub thiab pom zoo los ntawm World Health Organization. Kev txiav luam yeeb tuaj yeem siv nrog kev ntseeg siab.
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Post lub sij hawm: Nov-17-2021