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bactéries Flashcards

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1
Q

Salmonella sp micro bio

A

fermenteur, gram -, oxydase -, catalse +

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2
Q

salmonella sp clinique

A

gastroenterite (fièvre, nausées, vomissement, diarhée sans sang, crampes abdo)

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3
Q

salmonella sp facteurs virulence

A

tolerance aux acides phagocytiques (survie dans macrophages, se propagent)

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4
Q

salmonella sp réservoir

A

animal et humain

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5
Q

salmonella typhi réservoir

A

juste humain

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6
Q

salmonella typhi facteur virulence

A

multipli a temperature piece

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7
Q

salmonella typhi clinique

A

fièvre typhoide ou enterique (colonisation asymptomatique)

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8
Q

Shigella sp microbio

A

gram-. oxydase -, catalase +, fermenteur lent

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9
Q

shigella sp reservoir

A

juste humain

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10
Q

shigella sp clinique

A

insuffisance rénale, shigellose (gastroenterite), ténesme, diarhée liquide, crampes

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11
Q

shigella sp facteurs virulence

A

toxine shiga: cause dommage glomerules: insuffisance renale (systeme secretion type 3)
réarrange actine: induit apoptose

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12
Q

klebsiella sp clinique

A

cause destruction necrotique des alveoles pulmonaire, mene a cavité), granulome inguinae (ITS: nodule, brisure, lesion granulomateuses)

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13
Q

klebsiella sp microbio

A

gram-, oxydase-, catalse +, fermenteur

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14
Q

klebsiella sp reservoir

A

juste humain

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15
Q

protéus mirabilis clinique

A

divise urée en co2 et ammoniac, augmente pH, precipite Ca et Mg, forme pierres aux reins

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16
Q

proteus mirabilis microbio

A

fermenteur lent ou nul, gram-, oxydase-, catalase +

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17
Q

yersina sp microbio

A

fermenteur lent, gram-, oxydase-, catalase +

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18
Q

yersina sp clinique

A

gastroenterite, abces intra-abdominale, hepatite, osteomyelite

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19
Q

yersina sp facteurs virulence

A

adherines, cytotoxines(interruption filaments actine), inhibe migration phagocytes (supprime production cytokines, empeche inflammation), inhibe aggregation plaquettaires

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20
Q

yersina pestis clinique

A 
peste bubonique (bacteremie)
peste pulmonaire: fièvre, malaise
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21
Q

yersina pestis facteurs virulence

A

sequestration facteurs croissance (absorbe fer organique), active plasmogène (degrade C3b:opsonisation et C5a:recrutement macrophages et caillots fibrines:propagation rapide)

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22
Q

yersina pestis reservoir

A

animal et humain accidentel

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23
Q

yersina enterolitica clinique

A

enterocolite (gastroenterite: fièvre, diarhée, douleur abdominale, gonflement ganglions)

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24
Q

yersina enterolitica reservoir

A

animal (aliments ou sang contaminé)

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25
yersina enterolitica facteur virulence
croit a basse temperatures
26
escheria coli microbio
fermenteur, gram-, oxydase-, catalase+, bouge par flagelles et peritriches
27
escheria coli facteur virulence
adhesine, toxines(hemolysine)
28
escheria coli clinique
gastroenterite, meningite (souche exogene)
29
clostriduim perfringens microbio
gram+, double hemolyse, anaerobe
30
Clostridium perfringens facteurs virulence
toxines: alpha: lyse erythrocytes, leucocytes, plaquettes, cell endotheliales beta: stase intestinale: necrose: enterite necrotique epsilon: augmente permeabilité vasculaire GI iota: augmente permeabilité vasculaire et activité necrotique
31
clostridium perfringens reservoir
sol, eau contaminé par scelles
32
clostridium perfringens clinique
``` gangrene gaseuse par activité metabolique rapide: necrose musculaire: choc: mort enterite necrosante (type C): douleur abdo, diarhée+sang, vomissement, ulceration, perforation empoisonement alimentaire (type A): crampes abdo, diarhée ```
33
clostridium tetani microbio
anaerobe, gram +, non fermenteur
34
clostridium tetani facteur virulence
formation spores, production toxines: tetanolysine, tetanoplasmine (inactive protéines relachent neurotransmetteurs inhibiteurs)
35
clostridium tetani clinique
paralysie spastique | generalysé: touche SNC, sudation, deshydratation, sourire sardonique
36
clostridium tetani reservoir
humain et animal et omnipresent sols fertiles
37
clostridium botulinum microbio
gram+, anaerobe, spores
38
clostridium botulinum clinique
``` paralysie flaccide (inactive proteines qui relachent acetylcholine) alimentaire(vision floue, bouche seche, 0 fievre, douleur abdo), infantile, lesionnel ```
39
clostridium botulinum reservoir
sols et echanitillons d'eau
40
clostridium botulinum facteurs virulence
a une protéine qui facilite passage dans GI
41
clostridium difficile microbio
gram+, anaerobe
42
clostridium difficile facteurs virulence
spores, toxine: enterotoxine(effet chimotaxique et interuption jonctions cell) et cytotoxique(depolymerisation actine)
43
clostridium difficile clinique
diarhée, colite pseudomembranaires(crampes abdo, diarhée profuse, fièvre)
44
bacteroide fragilis microbio
gram-, anaerobe, flore normale, catalse +
45
bacteroide fragilis facteurs virulence
adhesine ou fimbriae, production toxine
46
bacteroide fragilis clinique
infection tractus respiratoire, abces cerebraux, infetion intra-abdominale, gynecologiqie, tissus mous, peau, gastroenterite
47
pseudomomas aeruginosa identification
vert, sent raisin, gram-, aerobie stricte, beta hemolyse, oxydase+
48
pseudomomas aeruginosa reservoir
humide
49
pseudomomas aeruginosa facteur virulence
exotoxine s et t rearange actine(invasion tissulaire), adhesine, exotoxine A(interompt synthese protéines), pyocianine(forme peroxyde d'hydrogene), pyoverdine(lie le fer), serine protease(degrade elastines+systeme complement),phospholipase C(hemolysine)
50
pseudomomas aeruginosa clinique
infection pulmonaire, peau, tissus mous, tractus urinaire, oreilles, yeux
51
staphylocoque microbio
en amas, coagulase+ catalase+
52
streptococcus classés selon
beta-hemolitique: groupes de lancefields (ABCFG) | alpha et gamma hemolytique: groupe viridians:propriété biochimiques/physiologique
53
streptococcus beta-hemolytique
B:zone etroite hemolyse, antigene B, pneumonie CFG: antigene C/F/G ou non specifique, cause abces
54
streptococcus groupe viridians
anginosus: abces mitis: endocartite salivarius: endocartite mutans: carrie dentaire bovis: meningite
55
enterococcus
antigene du groupe D, colonise tube GI, infection conduit urinaire, peritonite, endocartite
56
staphylococcus aureus microbio
gram+, catalase+, coagulase+, jaune
57
staphylococcus aureus pathogenese
proteine a se lie immunoglobuline AGR est quorum sensing et produit surface adherente(slime layer) ou enzymes hydrolitiques coagulase libre active thrombine et lié active coagulase reacting factor convertit fibrinogene en fibrine (localise et protege)
58
staphylococcus aureus toxines
cytotoxines: lyse membrane exfoliante: detruit adhesion entre cells (0inflammation) enterotoxine:(associé bouffe) superantigene, inflammation, vomissements TSST: superantigene:relache cytokines: perce barriere mucosal: effet systemique, choc hypovolemique: MOF enzymes: hyaluronidase, fibrinolysine, lipase, nuclease
59
streptococcus pyogene facteur virulence (sans toxines)
protéine M bloque liason C3b (facteur H le degrade) semblable a M se lie a anticorps C5a peptidase: inactive C5a adhesion aux cellules hotes
60
streptococcus pyogene toxines
streptococcus pyogene exotoxine: superantigene responsable fascite necrosante streptolysine S et O: lyse leucocytes, plaquettes et erythrocytes streptokinase: clive fibrine et fibrinogene
61
streptococcus pyogene clinique
fascite necrosante: cellulite:bulles:gangrene:symptomes systemiques: multiorgan failure: mort (infection tissus sous cutanés profond qui se propage) choc toxique: commence par inflammation et infection des tissus, symptomes vagues (fievre, malaise), MOF
62
streptococcus pneumoniae microbio
vert si alpha-hemolyse (aerobe) si betahemolyse (anaerobe)
63
streptococcus pneumoniae facteur virulence
adhesine (peut migrer aux poumons), produit pnemolysine(crée pore cell epitheliales, active systeme complement classique) et protéase secretrice IgA(empeche emprisonnement dans mucus), produit peroxyde d'hydrogene et phosphorylcholine, se lie a plaqueete activating factor et entre dans cell, ce qui facilite propagation

bactéries (1 decks)

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