Metronidazole Ncua tsegyog ib qho tshuaj tua kab mob hauv qhov ncauj uas yog cov tshuaj tua kab mob nitroimidazole. Nws cov khoom xyaw nquag yog metronidazole, uas ua rau cov kab mob bactericidal cuam tshuam nrog DNA synthesis ntawm cov kab mob thiab cov cab. Qhov kev npaj no feem ntau yog dawb rau creamy ncua nrog lub qab zib thiab txiv qaub txiv kab ntxwv tsw, ua rau nws yooj yim rau cov menyuam yaus thiab cov neeg mob uas nqos nyuaj. Vim tias qhov sib ntxiv ntawm cov khoom qab zib (xws li aspartame) thiab cov txuj lom txhim kho cov neeg mob ua raws; Ib koob tshuaj kuj tuaj yeem hloov kho raws li qhov hnyav lossis mob (xws li 125 mg lossis 200 mg metronidazole ib 5 mL); Nyob rau tib lub sijhawm, nws yuav tsum tau muab cia rau hauv chav sov, thiab lub txee lub neej tom qab qhib lub raj mis feem ntau yog 60 hnub kom tsis txhob khov. Nws cov lus qhia npog ntau yam kab mob hauv lub cev, suav nrog: kab mob anaerobic xws li mob hlwb, necrotizing pneumonia, osteomyelitis, postpartum sepsis, pelvic abscess, pelvic cellulitis, peritonitis, thiab postoperative qhov txhab; Cov kab mob parasitic xws li trichomoniasis tshwm sim los ntawm Trichomonas vaginalis, amoebiasis tshwm sim los ntawm Entamoeba histolytica, Giardiasis, thiab colonic me me ciliated kab mob; Cov kab mob sib xyaw ua ke yog ib qho kab mob sib kis los ntawm ob qho tib si rhiab anaerobic kab mob thiab cov kab mob aerobic.
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Metronidazole nyob rau hauv plab hnyuv metabolome: lub ntiaj teb tshuaj lom neeg zoo li cov kab mob
Tib neeg lub plab yog qhov chaw tubular nrog txoj kab uas hla ntawm ob peb centimeters, tab sis nws haum rau kwv yees li 39 trillion microbial hlwb, tsim "superorganism" ua ke nrog 30 trillion tib neeg lub hlwb. Qhov no microbial ecosystem, dominates los ntawm Firmicutes, Bacteroidetes, Proteobacteria, thiab lwm yam phyla, tsim phav phav tus me me molecule tebchaw los ntawm cov metabolism hauv txhua hnub, tsim ib tug tshwj xeeb plab metabolome. Thaum cov tshuaj nyiamMetronidazole Ncua tsegnkag mus rau hauv txoj hnyuv, lawv tam sim ntawd cuam tshuam nrog lub ntiaj teb no complex tshuaj nyob rau hauv ntau qhov ntev, thiab lawv cov txheej txheem metabolic nyob deb ntawm ib qho yooj yim kab mob plab hnyuv kab mob, tab sis yog ib tug biotransformation tsiab peb caug dominated los ntawm microbial enzyme systems. Los ntawm hydrolysis ntawm benzoyl metronidazole mus rau tiam 5-hydroxymetronidazole, los ntawm kev tiv thaiv ntawm disulfiram zoo li cov tshuaj tiv thaiv rau kev xaiv siab ntawm cov kab mob tshuaj tiv thaiv kab mob, txhua qhov txheej txheem metabolic cuam tshuam txog lub luag haujlwm ntawm cov zej zog microbial hauv txoj hmoo tshuaj. Cov kev tshawb fawb tshiab qhia tau hais tias plab microbiota tuaj yeem hloov pauv cov yam ntxwv pharmacokinetic ntawm metronidazole los ntawm peb lub tswv yim: bioaccumulation, enzymatic hloov dua siab tshiab, thiab metabolite hla kev pub mis, yog li cuam tshuam rau nws cov txiaj ntsig thiab kev nyab xeeb.
Lub plab Dynamics ntawm Metronidazole: Microbial Mediated Metabolic Network
Temporal thiab spatial yam ntxwv ntawm kev tso tshuaj
Kev tso tawm ntawmmetronidazole ncua kev kawm ntawvNyob rau hauv txoj hnyuv muaj qhov tseem ceeb hauv cheeb tsam tshwj xeeb. 4.6 teev tom qab kev tswj hwm qhov ncauj, ib puag ncig nrog tus nqi pH ntawm 1.5-3.5 hauv plab txhawb nqa hydrolysis ntawm benzoyl metronidazole ester bonds, tso tawm cov khoom xyaw nquag metronidazole. Lub sijhawm no, cov tshuaj concentration hauv duodenum tuaj yeem ncav cuag 4.6 μ g / ml, deb tshaj qhov tsawg kawg nkaus inhibitory concentration ntawm Bacteroides fragilis (MIC90=2 μ g / ml). Cov kev tshawb fawb txog kev thauj mus los hauv cov hnyuv me tau pom tias tom qab qhov kev tshem tawm tau nkag mus rau hauv duodenum los ntawm lub plab, nws ua tiav 90% kev nqus hauv 2 teev.
Qhov kev nqus sai sai no ua rau muaj qhov siab tshaj plaws ntawm metronidazole nyob rau hauv lub davhlau ya nyob twg ileum (8.2 μ g / ml), zoo inhibiting cov kab mob Clostridium difficile hauv cheeb tsam no. Lub zej zog microbial cuam tshuam cov tshuaj tso tawm los ntawm kev tswj cov plab hnyuv pH thiab mucus txheej tuab. Cov saw luv luv fatty acids uas tsim los ntawm Bacteroidetes tuaj yeem txo cov nqi pH hauv zos thiab txhawb nqa hydrolysis ntawm benzoyl metronidazole; Cov mucin degrading enzymes secreted los ntawm Firmicutes hloov cov diffusion tus nqi ntawm cov tshuaj nyob rau hauv lub mucus txheej. Cov kev sim tsiaj tau pom tias qhov nqus ntawm metronidazole hauv cov nas tsis muaj menyuam tau txo qis los ntawm 35% piv rau cov nas ib txwm ua, lees paub txog kev tswj hwm lub luag haujlwm ntawm cov zej zog microbial hauv kev tso tshuaj.
Metabolic transformation ntawm microbial enzyme system
Lub plab microbiota rov kho cov tshuaj pharmacokinetics ntawm metronidazole los ntawm peb txoj hauv kev loj hauv metabolic:
Nitroreduction system: Nitroreductase ntawm genus Bacteroidetes txo cov metronidazole rau hydroxylamine derivatives, uas ua rau kom ua tau zoo los ntawm peb zaug hauv qhov chaw anaerobic ntawm txoj hnyuv. Qhov kev hloov pauv no tuaj yeem txhim kho cov tshuaj tua kab mob ntawm cov tshuaj lossis tsim cov tshuaj neurotoxic metabolites.
Kev hloov kho acetylation: Acetyltransferases ntawm Clostridium genus ua rau N-acetylation ntawm metronidazole, tsim cov tshuaj lom neeg metabolites. Kev tshawb fawb tau pom tias cov neeg mob rog rog muaj 25% nce ntxiv ntawm Clostridium hauv lawv cov hnyuv, ua rau 40% nce qib ntawm acetylated metabolites.
Glucuronylation: UDP glucuronosyltransferase ntawm Bifidobacterium txhawb kev khi ntawm metronidazole rau glucuronic acid, ua kom cov kua tsib tso tawm sai. Cov neeg laus muaj peev xwm txo qis glucuronide vim qhov txo qis hauv bifidobacteria, ua rau lub neej ntev ntawm ib nrab - tshuaj.
Microbial kev cai ntawm excretion pathways
Kev tshem tawm ntawm metronidazole thiab nws cov metabolites feem ntau tshwm sim los ntawm ob lub raum thiab cov hnyuv. Cov neeg mob uas muaj lub raum tsis ua haujlwm yuav tsum tau kho cov koob tshuaj, tab sis qhov cuam tshuam ntawm microbiota kuj tseem ceeb:
Cov kab mob hauv plab hnyuv: Proteobacteria hydrolyzes khi metabolites, ua rau cov tshuaj reabsorption thiab ua kom ntev ib nrab - lub neej.
Fecal excretion: Methanogenic archaea hloov lub plab hnyuv redox lub peev xwm los ntawm kev noj cov pa roj hydrogen, inhibiting txo cov metabolism ntawm metronidazole thiab nce fecal excretion.
Bile excretion: Glucuronidase inhibitors tsim los ntawm bifidobacteria tuaj yeem txo cov kab mob enterohepatic thiab nce qhov feem ntawm fecal excretion.
Cov qauv kev cai ntawm cov zej zog microbial
Dynamic balance ntawm microbial zej zog muaj pes tsawg leeg
Qhov piv ntawm metronidazole rhiab kab mob (xws li Bacteroidetes) rau cov kab mob resistant (xws li Enterococcus) nyob rau hauv lub plab ntawm cov neeg noj qab nyob zoo tseem nyob ntawm 7:3. 72 teev tom qab noj tshuaj, cov abundance ntawm cov kab mob rhiab heev txo mus rau 15%, thaum cov kab mob resistant tau txais cov nitroreductase gene (nim gene) los ntawm kab rov tav formulation resistant. Qhov sib txawv tseem ceeb hauv microbiota ntawm cov neeg tshwj xeeb cuam tshuam rau cov metabolism hauv tshuaj:
Cov neeg laus: Qhov piv ntawm Firmicutes rau Bacteroidetes nce mus rau 1.8: 1, ua rau 30% txo qis ntawm metronidazole metabolism.
Cov neeg mob rog rog: Kev nplua nuj ntawm Proteobacteria nce 25%, thiab cov haujlwm ntawm nitroreductase nce 40%.
Cov neeg mob ntshav qab zib: methanogenic archaea colonization txo cov bioavailability ntawm metronidazole los ntawm 18%.
Ecological cuam tshuam ntawm metabolites
Metronidazole metabolites reconstruct lub plab hnyuv microenvironment los ntawm peb txoj kev:
Cov kev cai luv luv fatty acid txoj cai: 5-hydroxymetronidazole inhibits butyrate tsim cov kab mob (xws li Rossella), txo cov concentration ntawm butyric acid los ntawm 12mM mus rau 7mM thiab cuam tshuam txoj hnyuv mucosal barrier.
Kev cuam tshuam ntawm bile acid cycle: Acetylated metabolites khi nrog cov kua tsib acids los tsim cov kua tsib kua qaub (xws li lithocholic acid), thiab lawv cov concentration ntau ntxiv yog txuam nrog kev pheej hmoo ntawm mob qog noj ntshav.
Oxidative stress induction: Hydroxylamine derivatives nce lub plab hnyuv redox peev xwm (Eh) los ntawm -200mV rau -100mV, txhawb kev loj hlob ntawm cov kab mob pathogenic xws li Escherichia coli.
Xaiv lub siab ntawm cov tshuaj - cov kab mob resistant
Kev kho mob Metronidazole ua rau muaj kev nce ntxiv ntawm cov tshuaj - cov kab mob resistant:
Kev tiv thaiv thawj zaug: Tus nqi tsis kam ntawm Helicobacter pylori rau metronidazole tau nce los ntawm tsawg dua 20% hauv xyoo 1990 mus rau 50% -70% tam sim no, feem ntau yog vim muaj kev hloov pauv hauv rdxA noob ua rau tsis ua haujlwm ntawm nitroreductase.
Efficiency leap Precision thiab stability
Tau txais kev tiv thaiv: Tom qab 7 hnub ntawm kev kho mob, qhov feem pua ntawm cov noob caj noob ces zoo hauv txoj hnyuv tau nce los ntawm 3% mus rau 22%, tsim cov pab pawg tsis tu ncua.
Hla kev tiv thaiv: Metronidazole resistant kab mob feem ntau tsim kev tiv thaiv rau furazolidone ib txhij, ua rau qhov nyuaj ntawm thib ob - kab kev kho mob.
Cov yam ntxwv ntawm metabolic hauv qhov chaw tshwj xeeb
Sib piv cov tshuaj pharmacokinetic ntawm metronidazole hauv nas nrog cov kab mob dawb, pab pawg neeg tsis muaj menyuam, pawg kab mob toj siab, thiab pawg plateau sterile, cov lus xaus hauv qab no tau kos:
Txo bioavailability: AUC thiab Cmax ntawm nas nyob rau hauv siab -altitude pawg kab mob raug txo los ntawm 32% thiab 28%, feem, piv rau cov nyob rau hauv cov dawb kab mob pawg, qhia tau hais tias lub hypoxic ib puag ncig inhibits kev nqus tshuaj.
Accelerated excretion: Tus nqi tshem tawm (CL) ntawm qhov siab - pab pawg siab siab tau nce 45%, uas tej zaum yuav cuam tshuam rau lub raum cov ntshav khiav thiab txhim kho microbial metabolism.
Microbial dependence: AUC ntawm pab pawg neeg tsis muaj menyuam nyob rau hauv lub tiaj nce los ntawm 25% piv rau cov pab pawg neeg nrog cov kab mob ntawm lub tiaj, thaum cov pab pawg neeg tsis muaj menyuam nyob rau toj siab tsuas yog nce li 12%, qhia txog lub luag haujlwm tsis muaj zog ntawm cov zej zog microbial hauv thaj chaw hypoxic.
Vim lub siab thiab lub raum tsis ua haujlwm thiab cov metabolism hauv microbial tsis muaj zog, cov metabolism hauv metronidazole hauv cov neeg laus muaj cov yam ntxwv hauv qab no:
Ib nrab lub neej txuas ntxiv: Cov neeg mob hnub nyoog tshaj 70 xyoo muaj 50% nce hauv ib nrab- lub neej piv rau cov neeg hluas, thiab lub sijhawm noj tshuaj yuav tsum tau kho.
Custom Notebook Solutions
Ua kom muaj kev pheej hmoo ntawm kev siv tshuaj tiv thaiv: Kev txo qis ntawm Firmicutes ua rau txo qis hauv nitroreductase kev ua haujlwm, thiab cov kab mob rhiab heev raug cuam tshuam, ua rau muaj cov kab mob tiv thaiv sai.
Nce neurotoxicity: Kev sib sau ntawm acetylated metabolites ua rau muaj kev cuam tshuam ntau ntxiv xws li kiv taub hau thiab ataxia.
Lub zeem muag yav tom ntej: Kev tsim tshuaj microbial raws li kev siv tshuaj
Plaub tiam metronidazole derivatives:
Cov tshuaj tshiab nitroimidazole tab tom txhim kho:
MBN-201: Los ntawm kev qhia fluorine atoms los txhim kho kev xaiv ntawm cov kab mob anaerobic, txo kev cuam tshuam nrog cov kab mob aerobic, thiab txo qis kev pheej hmoo ntawm microbial dysbiosis.
PRO-307: Tus qauv tsim prodrug nce txoj hnyuv nqus mus rau 95% thiab txo lub siab metabolic lub nra los ntawm 40%.
NANO-402: Nanocrystal thev naus laus zis ua tiav txoj hnyuv tso tawm, nce hauv zos concentration los ntawm 5 zaug thiab txo cov kev mob tshwm sim.
Microbial Drug Co Evolution Study:
Tsim kom muaj tus qauv kev hloov pauv microbial nyob rau hauv metronidazole siab, nthuav tawm:
Kab rov tav hloov zaus ntawm cov tshuaj tiv thaiv noob yog 0.3-1.2 zaug ib hom kab mob hauv ib xyoos.
Adaptive evolutionary pathway of metabolites: 5-hydroxymetronidazole maj mam hloov mus rau hauv cov tshuaj lom neeg tsawg.
Molecular mechanism ntawm microbiota party co adaptation: dynamic tshuav ntawm mucus txheej thickness thiab tshuaj permeability.
Clinical translation ntawm plab hnyuv simulator:
Qhov tseeb tsim Gut- ntawm-a-Chip system tuaj yeem simulate:
Cov tshuaj tso tawm raws li qhov sib txawv pH gradients.
Kev hloov pauv ntawm microbial metabolic network.
Kev soj ntsuam ntawm txoj hnyuv mucosal barrier kev ncaj ncees.
Cov thev naus laus zis no ua rau lub voj voog loj hlob ntawm cov tshuaj tshiab los ntawm 5 xyoo mus rau 18 lub hlis thiab txo cov nqi los ntawm 65%.
Cim npe nrov: metronidazole ncua kev kawm ntawv, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom