Pathogenicity thiab virulence ntawm cov kab mob. Virulence yog

Cov txheej txheem:

Pathogenicity thiab virulence ntawm cov kab mob. Virulence yog
Pathogenicity thiab virulence ntawm cov kab mob. Virulence yog
Anonim

Tib neeg lub cev nyob hauv tsev muaj kwv yees li 100 trillion kab mob. Cov kws tshawb fawb niaj hnub no tsuas yog tam sim no nkag siab tias cov zej zog nyuaj cuam tshuam nrog tib neeg li cas. Lawv cuam tshuam rau kev zom zaub mov, kev tiv thaiv kab mob, thiab tej zaum txawm tias muaj kev puas siab puas ntsws. Txawm li cas los xij, tsis yog txhua tus kab mob tuaj yeem koom nrog tib neeg lub cev hauv kev thaj yeeb thiab kev sib haum xeeb. Cov kab mob yog cov kab mob uas tuaj yeem ua rau muaj kab mob hauv cov nroj tsuag, tsiaj txhu, lossis kab. Microbes qhia lawv cov pathogenicity los ntawm virulence. Yog li dab tsi yog virulence?

virulence yog
virulence yog

Lub tswvyim ntawm kev ua phem

Virulence yog ib lo lus rau qib ntawm pathogenicity ntawm microbe. Yog li ntawd, cov kev txiav txim siab ntawm tus kab mob virulence yog ib qho ntawm nws cov caj ces, biochemical, lossis cov yam ntxwv uas tso cai rau nws ua rau kab mob.

virulence yog
virulence yog

Kev sib raug zoo ntawm tus tswv tsev thiab tus kab mob yog nyob rau hauv tas li flux raws li txhua tus muaj lub zog los hloov cov dej num thiabkev ua haujlwm ntawm lwm tus. Qhov tshwm sim ntawm qhov kev sib raug zoo no nyob ntawm qhov kev ua phem ntawm tus kab mob thiab qhov txheeb ze ntawm kev tiv thaiv lossis kev cuam tshuam ntawm tus tswv tsev. Kev ua tau zoo ntawm lub cev tiv thaiv mechanisms kuj plays lub luag haujlwm tseem ceeb.

virulence yog
virulence yog

Virulence yam cuam tshuam ncaj qha rau cov khoom uas tso cai rau cov kab mob tsis zoo nkag mus lossis nkag mus rau hauv lub cev thiab ua rau muaj kab mob. Lawv suav nrog cov kab mob co toxins uas ua rau muaj kab mob.

dab tsi yog virulence
dab tsi yog virulence

ntsiab lus tseem ceeb

Kev tawm tsam yog qhov muaj peev xwm nkag mus rau cov ntaub so ntswg. Nws suav nrog cov txheej txheem rau qhov kawg colonization thiab tsim cov khoom siv ntxiv uas txhawb kev ntxeem tau thiab muaj peev xwm hla lossis kov yeej qee yam kev tiv thaiv.

virulence yog
virulence yog

Toxogenicity yog lub peev xwm tso tawm co toxins. Cov kab mob tuaj yeem tsim tau ob hom co toxins: exotoxins thiab endotoxins. Exotoxins raug tso tawm los ntawm cov kab mob hlwb thiab txhawb cov kab mob loj hlob. Endotoxins yog cov tshuaj cellular.

virulence yog
virulence yog

Cov kab mob co toxins, ob qho tib si soluble thiab cell-bound, tuaj yeem thauj mus los ntawm cov ntshav thiab cov qog ntshav thiab ua rau cov ntaub so ntswg cytotoxic cuam tshuam ntawm cov chaw deb ntawm qhov qub nkag. Qee cov kab mob co toxins tuaj yeem tsim cov cheeb tsam, koom nrog kev cuam tshuam.

virulence yam
virulence yam

Pathogenicity thiab virulence ntawm microorganisms

YPathogenicity -lub cev muaj peev xwm ua rau muaj kab mob. Qhov peev xwm no yog cov caj ces ntawm cov kab mob uas ua mob rau tus tswv tsev. Rau opportunistic microorganisms, lub peev xwm los ua tus kab mob no tsis yog innate. Cov kab mob tuaj yeem nthuav tawm dav dav ntawm kev ua phem.

virulence yog
virulence yog

Virulence yog ib lub tswv yim uas yog inextricably txuas nrog lub tswv yim ntawm pathogenicity. Qhov degree ntawm virulence feem ntau cuam tshuam nrog lub peev xwm ntawm cov kab mob kom sib npaug hauv cov kab mob hauv lub cev thiab tuaj yeem nyob ntawm qee yam. Cov kab mob kis tau ua rau muaj kab mob, uas yog, pab ua rau kab mob.

dab tsi yog virulence
dab tsi yog virulence

Ntau tus neeg tau mloog ntau zaus rau ntau qhov kev tshaj tawm rau cov khoom lag luam uas lees tias tua 99% ntawm cov kab mob. Pathogen yog ib lo lus siv los piav txog cov kab mob me me (cov kab mob thiab cov kab mob) uas ua rau muaj ntau yam kab mob. Nyob rau hauv biological terminology, nws kuj yog hu ua tus causative tus neeg sawv cev. Muaj ntau hom kab mob uas ua rau muaj kab mob xws li mob khaub thuas mus rau mob qog noj ntshav.

virulence yog
virulence yog

Cov kab mob kab mob ua rau tib neeg muaj ntau txoj hauv kev, nyob ntawm lawv qhov kev ua phem. Virulence yog ib lo lus uas siv los piav txog qhov ua tau zoo ntawm ib tus kab mob tshwj xeeb. Tus kab mob muaj kab mob ntau dua, nws yuav ua rau tib neeg noj qab haus huv ntau dua.

virulence yog
virulence yog

About virulence factor

Virulence factor yog cov yam ntxwv ntawm cov kab mob uas txiav txim siab seb tus kab mob kis tau li cas. Qhov ntau ntawm lawv, qhov ntau dua yog tias nws yuav ua rau tus kab mob. Cov xwm txheej no ua rau muaj txiaj ntsig zoo hauv kev tawm tsam tib neeg lub cev tiv thaiv kab mob, thiab ntau dua, lawv tuaj yeem tsim kev puas tsuaj ntau dua.

virulence yog
virulence yog

Muaj ntau yam sib txawv ntawm cov kab mob sib kis uas tuaj yeem lossis tsis tuaj yeem muaj nyob hauv ib qho kab mob: colonization factor, enterotoxins, thiab hemolysins. Virulence yog ib qho txiaj ntsig zoo uas sawv cev rau qib ntawm pathology tshwm sim los ntawm kab mob. Qhov no yog ib qho cim qhia txog kev sib cuam tshuam ntawm cov kab mob thiab cov cab kuj. Virulence feem ntau cuam tshuam nrog lub peev xwm ntawm cov kab mob kom rov tsim dua. Nws kuj tseem nyob ntawm tus neeg nqa khoom thiab ib puag ncig.

virulence ntawm microorganisms
virulence ntawm microorganisms

Ib kab mob kab mob feem ntau txhais tau tias yog cov kab mob uas muaj peev xwm ua rau muaj kab mob. Nws lub peev xwm los ua tus kab mob hu ua pathogenicity. Tus kab mob kis kab mob yog cuam tshuam ncaj qha rau qhov xwm txheej ntawm tus kab mob thiab yog qhov qhia txog qhov mob hnyav ntawm tus kab mob nws ua.

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