Qhov sib txawv tseem ceeb ntawm cov kab mob epidermidis thiab aureus yog Staphylococcus epidermidis yog cov kab mob uas tsis yog haemolytic thaum Staphylococcus aureus yog cov kab mob haemolytic.
Epidermidis thiab aureus yog hom npe ntawm ob tus kab mob hauv cov kab mob genus Staphylococcus. Lawv ua rau cov khoom siv kho mob uas muaj ntau tshaj plaws-kev sib kis kab mob. Yog li ntawd, nws yog ib qho tseem ceeb heev kom nkag siab txog lawv cov yam ntxwv thiab qhov txawv ntawm epidermidis thiab aureus. Cov tsos mob tshwm sim, kev tsis haum tshuaj, cov yam ntxwv tsis zoo, thiab kev txheeb xyuas tus yam ntxwv txawv ntawm S. aureus thiab S. epidermidis.
YEpidermidis yog dab tsi?
Epidermidis yog ib qho facultative anaerobe. Nws tseem yog gram-positive coccus. Cov kab mob tshwm sim raws li ib pawg ntawm cov txiv hmab txiv ntoo zoo li cov cheeb tsam muaj xws li puag ncig, me me, thiab xim dawb tsa cov cheeb tsam. Lawv tsis yog-hemolytic hauv cov ntshav agar. Zoo ib yam li lwm cov staphylococci, S. epidermidis kuj yog catalase zoo. Txawm li cas los xij, S. epidermidis reacts tsis zoo rau kev kuaj coagulase thiab oxidase kuaj. Tsis tas li ntawd, S. epidermidis qhia tau hais tias cov lus teb zoo rau kev kuaj nitrate reductase thiab urease test.
Daim duab 01: S. epidermidis
Epidermidis feem ntau kis tau los ntawm catheters thiab cog qoob loo txij li S. epidermidis biofilms tuaj yeem loj hlob ntawm cov khoom siv yas tso rau hauv lub cev. Tsis tas li ntawd, cov kab mob no feem ntau nyob ntawm daim tawv nqaij thiab mucosa raws li cov kab mob commensal. Txawm li cas los xij, nws tsis yog pathogenic tshwj tsis yog tias tus tswv tsev muaj lub cev tsis muaj zog. Nyob rau hauv cov ntaub ntawv ntawm tus kab mob, nws tsis yog ib qho yooj yim mus txwv lawv los ntawm cov tshuaj tua kab mob. Tab sis nws kuj tsis yooj yim sua. Cov kab mob hnyav tuaj yeem nce mus txog qhov mob endocarditis tuag.
Aureus yog dab tsi?
Aureus kuj yog ib qho facultative anaerobic gram-zoo coccus ntawm genus Staphylococcus. Zoo ib yam li S. epidermidis, S. aureus kuj tshwm sim raws li ib pawg ntawm cov txiv hmab txiv ntoo zoo li cov cheeb tsam. Txawm li cas los xij, tsis zoo li S. epidermidis colonies, S. aureus tsim loj, du, thiab puag ncig, uas yog xim kub. Tsis tas li ntawd, tsis zoo li S. epidermidis, S. aureus qhia haemolysis thaum lawv loj hlob hauv cov ntshav agar. Tsis tas li ntawd, cov kab mob no ua rau muaj txiaj ntsig zoo rau kev kuaj catalase, uas yog qhov tseem ceeb los txheeb xyuas lawv los ntawm Enterococci thiab Streptococci. Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm S. aureus yog cov kab mob no yog coagulase zoo. S. aureus synthesizes coagulase enzyme uas ua rau cov ntshav txhaws. Yog li, qhov tshwj xeeb no pab tau txhawm rau txhawm rau sib txawv ntawm lwm hom Staphylococcus.
Daim duab 02: S. aureus
Aureus yog ib feem ntawm cov tawv nqaij ib txwm muaj thiab lub qhov ntswg. Txawm li cas los xij, tus kab mob no tiv taus cov tshuaj tua kab mob feem ntau. Cov kab mob tuaj yeem tsim cov enterotoxins, thiab cov enzymes no yog cov kab mob phem uas ua rau muaj ntau yam kab mob. Enterotoxins tuaj yeem rhuav tshem cov kab mob mucosal ntawm txoj hnyuv los ntawm kev hloov pauv permeability ntawm daim nyias nyias. Tsis tas li ntawd, lawv cov kab mob tuaj yeem kis tau los ntawm kev sib cuag nrog cov kua paug los ntawm cov kab mob kis, sib cuag ntawm daim tawv nqaij ncaj qha, lossis khaub ncaws thiab phuam da dej, thiab lwm yam. Lawv muaj ntau yam kab mob ntawm cov pob liab liab mus rau cov kab mob endocarditis.
Dab tsi zoo sib xws ntawm Epidermidis thiab Aureus?
- Epidermidis thiab aureus yog ob hom kab mob uas muaj tib yam kab mob Staphylococcus.
- Lawv yog facultative anaerobes.
- Kuj, ob leeg yog gram-positive.
- Ntxiv mus, lawv yog cov kab mob commensal.
- Tsis tas li ntawd, lawv yog cov kab mob kheej kheej. Li no, lawv yog cocci.
- Ntxiv mus, lawv ua rau cov khoom siv kho mob ntau tshaj plaws-kev kho mob sib kis.
- Lawv zoo rau qhov ntsuas catalase.
- Qhov tseem ceeb, ob qho tib si lawv cov kab mob tuaj yeem ua mob hnyav li endocarditis.
Qhov txawv ntawm Epidermidis thiab Aureus yog dab tsi?
E pidermidis yog kab mob nonhaemolytic thaum S. aureus yog cov kab mob haemolytic ntawm cov ntshav agar. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm epidermidis thiab aureus. Tsis tas li ntawd, qhov sib txawv tseem ceeb ntawm cov epidermidis thiab aureus yog qhov S. epidermidis cov cheeb tsam me me, puag ncig thiab xim dawb thaum S. aureus colonies loj, du thiab golden xim. Tsis tas li ntawd, lwm qhov sib txawv tseem ceeb ntawm epidermidis thiab aureus yog qhov S.epidermidis yog coagulase tsis zoo thaum S. aureus yog coagulase zoo.
Tsis tas li ntawd, S. epidermidis tsim biofilms thaum S. aureus tsim enterotoxins. S. aureus yog kab mob ntau tshaj li S. epidermidis. Ntxiv mus, S. aureus tiv taus ntau yam tshuaj tua kab mob thaum S. epidermidis tsis yog. Yog li ntawd, qhov no kuj ntxiv rau qhov sib txawv ntawm epidermidis thiab aureus.
Hauv qab infographic qhia txog qhov sib txawv ntawm epidermidis thiab aureus.
Summary – Epidermidis vs Aureus
Staphylococcus yog ib hom kab mob gram-zoo uas muaj ntau tshaj 40 hom. Ntawm lawv, S. epidermidis thiab S. aureus yog ob hom kab mob uas yog facultative anaerobes thiab tseem ceeb hauv kev kho mob. Ob hom yog ib feem ntawm tib neeg cov nroj tsuag. Lawv dhau los ua cov kab mob kis tau zoo hauv cov neeg tiv thaiv kab mob. S. epidermidis yog ib yam kab mob uas tsis yog mob haemolytic thaum S. aureus yog hemolytic. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm epidermidis thiab aureus. Tsis tas li, lwm qhov sib txawv ntawm epidermidis thiab aureus yog S. epidermidis reacts tsis zoo rau coagulate test thaum S. aureus reacts zoo rau coagulase test. Tsis tas li ntawd, S. epidermidis muaj peev xwm tsim tau biofilms ntawm yas nto thaum S. aureus muaj peev xwm tsim enterotoxins. Tsis tas li ntawd, S. aureus qhia tawm tsam ntau yam tshuaj tua kab mob thaum S. epidermidis tsis yog. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm epidermidis thiab aureus.
