2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
β-Lactams tseem yog ib qho ntawm cov tshuaj feem ntau koom nrog hauv cov tshuaj tsis haum tshuaj. Plaub pawg tseem ceeb sib koom ua ke plaub-tus tswv cuab β-lactam nplhaib; thiab yog tias lub nplhaib no tau sib xyaw ua ke rau a thiazolidine nplhaib, β-lactam raug cais ua penicillin. Qhov no suav nrog piperacillin thiab antistaphylococcal penicillins.
Dab tsi yog beta-lactam nplhaib hauv penicillin?
Lub nplhaib β-lactam yog ib feem ntawm cov qauv tseem ceeb ntawm ntau tsev neeg tshuaj tua kab mob, cov thawj coj yog penicillins, cephalosporins, carbapenems, thiab monobactams, uas yog, yog li ntawd, kuj hu ua β-lactam tshuaj tua kab mob. Yuav luag tag nrho cov tshuaj tua kab mob no ua haujlwm los ntawm inhibiting kab mob cell phab ntsa biosynthesis.
Lub nplhaib beta-lactam ua haujlwm li cas hauv penicillin?
Penicillin thiab feem ntau lwm yam tshuaj tua kab mob β-lactam ua by inhibiting penicillin-binding proteins, uas ib txwm ua rau kev sib txuas ntawm cov kab mob ntawm phab ntsa. Thaum tsis muaj β-lactam tshuaj tua kab mob (sab laug), phab ntsa ntawm tes ua lub luag haujlwm tseem ceeb hauv kev tsim cov kab mob.
Qhov twg heterocycle yog fused nrog beta-lactam nplhaib hauv cov qauv ntawm cephalosporin?
In penicillins, cephalosporins, thiab carbapenems, lub nplhaib no yog fused rau lwm 5- lossis 6-tus tswv cuab lub nplhaib, whereas hauv monobactams, lub nplhaib β-lactam yog monocyclic (Daim duab 1).
Lub nplhaib dab tsi muaj nyob hauv penicillin?
Tus yam ntxwv tseem ceeb ntawm covpenicillins yog lub four-membered β-lactam nplhaib; Cov qauv moiety no yog qhov tseem ceeb rau penicillin cov tshuaj tua kab mob. Lub nplhaib β-lactam yog nws tus kheej fused rau tsib lub nplhaib thiazolidine.
Pom zoo:
Vim li cas lub nplhaib beta lactam ntawm penicillin tsis ruaj khov?
Hydrolysis ntawm β-lactam nplhaib hauv penicillin ua rau nws tsis ua haujlwm. Hmoov tsis zoo, vim yog lub siab reactivity ntawm β-lactam nplhaib, ib penicillin tuaj yeem hnov mob nrog dej hauv cov kua qaub(raws li pom hauv plab), ua rau lub nplhaib β-lactam, hauv Cov tshuaj tiv thaiv hydrolysis.
Dab tsi yog beta lactam?
β-lactam tshuaj tua kab mob yog cov tshuaj tua kab mob uas muaj lub nplhaib beta-lactam hauv lawv cov qauv molecular. Qhov no suav nrog penicillin derivatives, cephalosporins thiab cephamycins, monobactams, carbapenems thiab carbacephems. Cov piv txwv tshuaj beta-lactam yog dab tsi?
Yuav ua li cas yog saonel thiab pirina fused?
Yog Saonel thiab Pirina koom tes, Piccolo yuav muaj tag nrho lub ntiaj teb 6 lub Namekians nyob hauv nws, uas yuav txhawb nws lub zog loj heev, thiab nws yuav yog kev sib txuas mus tas li uas tsis tuaj yeem ua tau. undone. Puas Saonel muaj zog dua Piccolo?
Vim li cas lub nplhaib nplhaib offline?
sim tshem tawm thiab rov txuas koj tus Choj. Nws yuav tsum reconnect nws. Tshawb xyuas koj cov firmware xwm txheej ntawm lub nplhaib app thiab xyuas kom koj tus Choj tau hloov tshiab. Rov pib lub router thiab khiav los ntawm cov txheej txheem teeb tsa dua, Nco ntsoov tias koj sau koj tus password kom raug.
Nyob rau hauv arthropods taub hau thiab thorax fused?
Cephalothorax cephalothorax Lub cephalothorax, tseem hu ua prosoma, yog tsim los ntawm ob qhov chaw tseem ceeb: dorsal carapace thiab ventral sternum. Feem ntau sab nraud appendages ntawm kab laug sab yog txuas rau cephalothorax, nrog rau lub qhov muag, chelicerae thiab lwm yam lub qhov ncauj, pedipalps thiab ob txhais ceg.
