Cocos Gram positivos
Sponsored Links
This presentation is the property of its rightful owner.
1 / 18

Cocos Gram positivos PowerPoint PPT Presentation


  • 328 Views
  • Uploaded on
  • Presentation posted in: General

Cocos Gram positivos. Escarlatina: lengua aframbuesada. Cocos. (microscopio electrónico). Cocos. Microcopía electrónica. Streptococcus. Streptococcus pneumoniae en Gram de expectoración. Cocos. Microscopía electrónica. Cocos Gram positivos en frotis de expectoración.

Download Presentation

Cocos Gram positivos

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Cocos Gram positivos


Escarlatina: lengua aframbuesada


Cocos. (microscopio electrónico)


Cocos. Microcopía electrónica


Streptococcus


Streptococcus pneumoniae en Gram de expectoración


Cocos. Microscopía electrónica


Cocos Gram positivos en frotis de expectoración


Cocos Gram positivos en cadenas


Neumococo en frotis de expectoración. Diplos y cadenas cortas.


Escarlatina. Exantema rugoso.


Reacción exfoliativa luego de infección estreptocóccica


Escarlatina. Eritema rugoso


MICs

Oxacillin Susceptible

Oxacillin Intermediate

Oxacillin Resistant

S. aureus

<2 g/ml

no intermediate MIC

>4 g/ml

CoNS

<0.25 g/ml

no intermediate MIC

>0.5 g/ml

Zone sizes

Oxacillin Susceptible

Oxacillin Intermediate

Oxacillin Resistant

S. aureus

>13 mm

11-12 mm

<10 mm

CoNS

>18 mm

no intermediate zone

<17 mm

Puntos de corte (breakpoints) de MIC y disco-difusión para oxacilina frente a S. aureus y

frente a Staphylococcus coagulasa negativos (CoNS)


How is the mecA gene involved in the mechanism of resistance?Staphylococcal resistance to oxacillin/methicillin occurs when an isolate carries an altered penicillin-binding protein, PBP2a, which is encoded by the mecAgene. The alteration of the penicillin-binding protein does not allow the drug to bind well to the bacterial cell, causing resistance to -lactam antimicrobial agents.


  • Login