robbypowell's version from 2016-03-06 17:31

periodontal microbes

Question Answer
t/f: Anaerobes are harder to culture than aerobesTRUE
t/f: Aerobes are harder to culture than anaerobesFalse (vice versa)
2 bacteria associated with brain abscessesPeptostreptococci & Fusobacterium nucleatum
t/f: most abscess infections contain a mix of multiple anaerobes & facultative anaerobesTrue
t/f: most abscess infections contain a single pathogenic microbial speciesFalse (multiple anerobes & fac anaerobes)
anaerobic infections are frequently foul smelling due to the presence of what?short chain fatty acids
a purulent infection that gives off a foul smell is likely a/an (aerobe/anaerobe)anaerobe
lab diagnosis of anaerobe specimen is done via what process?gas chromatography
What anaerobe produces beta-lactamase?Bacterioides fragiles
What anaerobe is penicillin resistant?Bactericides fragiles
3 anaerobic bacteria in gut floraFirmicutes (30%-50%), Bacteroidetes (20%-40%) and Actinobacteria (1%-10%)
Major portion of gut flora are ______ anaerobesstrict anaerobes
facultative anaerobes constitute a ______ (majority/minority) of gut floraminority
______ affects which anaerobic bacteria comprise the gut floradiet
high levels of proteins and animal fats lead to higher levels of what anaerobe in the gut floraBacteroides
Becteriodes are (strict anaerobes, facultative anaerobes, or aerobes)Strict Anaerobes
Do Bacterioides form spores?No
Bacterioides membranes contain _____Sphingolipids
absence of ______ indicative in Irritable Bowel SyndromeBactericides
The majority of GI tract infections is caused by opportunistic infections of what species?Bacterioides fragiles
antibiotic resistance in Bacterioides is spread between strains by ______Conjugation (horizontal transfer)
Most common species recovered from anaerobic bacteremia with high mortalityBacterioides fragiles
t/f: Bactericides are part of the normal oral floraTrue
t/f: Bactericides are not normally found in the oral floraFalse
Bacterioides are more commonly found in what type of infections in the oral cavityRoot Canal infections
what species Bacterioides was isolated from severely inflamed sites, but was absent in healthy sulciB. asaccharolyticus
bacteria generally accepted to be the cause of stomach cancerHelicobacter pylori
bacteria associated with oral cancerFusobacterium
t/f: incidence of anaerobes varies with ageTRUE
is incidence of anaerobes higher for adults or infants?adults
In the oral cavity, anaerobes are More prevalent in samples from the _____ _____ than any other siteGingival Sulcus
In saliva, ______ are the most numerous anaerobesVeillonella
anaerobic bacteria that Colonize by attaching to other bacteria or epithelial cells. they produce acid from sugarsPrevotella
Prevotella intermedia, nigrecans, & micros are considered ______ complex speciesorange
Prevotella intermedia and nigrecans can be difficult to distinguish between... but one of them is associated with periodontal disease.. which?P. intermedia
Peptrostreptococcus... motile or no?yes
Prevotella...motile or no?No
Predominant bacteria on tongue dorsa in Healthy individualsS. salivarius
3 Predominant bacteria on tongue dorsa Highly associated with halitosisAtopobium parvalum, Dialister sp., & Eubacterium sulci
Veillonella spp. utilize short chain organic acids, particularly _____ and ______Lactate & Succinate
Veillonella _____ upregulates histidine biosynthesis pathwayParvula
What bacteria is given to restore normal flora and as a treatment for Helicobacter pylori?Lactobacillus
type of bacteria with morphology of Filamentous/rod-shaped Colonies form branched networks of ‘hyphae’Actinomyces
Are actinomyces acid-fast?No
Can actinomyces form endospores?Yes
type of bacteria that Ferment glucose to a characteristic pattern of metabolic end products, namely succinic, acetic and lactic acidsActinomyces
Major constituent of plaqueActinomyces
Anaerobe associated with root surface cariesActinomyces
Anaerobe that can cause Formation of multiple abscesses and sinus tracts, may discharge sulfur granulesactinomyces
Condition that Typically occurs following oral surgery or in patients with poor oral hygiene... presents as Slowly enlarging large red lumpActinomycosis
CBC count results consistent with Actinomycosisanemia and mild leukocytosis
Antibiotic rx for ActinomycosisPenicillin G
Condition Characterized by progressive necrosis of intraoral tissues, seen in those with poor oral hygiene and suboptimal nutrition: Clinical Pain, edema, punched-out ulcers, pseudomembrane formation, halitosisANUG (acute necrotizing ulcerative gingivitis)
2 anaerobes associated with ANUGFusobacterium spp, & spirochetes (± related to Treponema pallidum)
oropharyngeal infection (Fusobacterium) followed by septic thrombophlebitis of the internal jugular vein with sepsis syndrome and metastatic disease, typically to the lungsLemierre’s disease
type of bacteria responsible for Lemierre’s diseaseFusobacterium
Anaerobe that acts as Bridge between early and late colonizersFusobacterium nucleatum
Anaerobe that Modulates host cytokine responses (IL-1β, IL-8) & inhibits apoptosisPorphyromonas gingivalis
Porphyromonas gingivalis is highly proteolytic due to ____ activitygingipain
Anaerobe associated with arthritisP. gingivalis
3 important microbes ... bc they are red complexP gingivalis, Treponema denticola, & Tannerella forsythia

Gram +/- & Bacilli or Cocci

Question Answer
BacteroidesGram -; Bacilli
PrevotellaGram-; Bacilli
PorphyromonasGram-; Bacilli
FusobacteriumGram-; Bacilli
AggregatibacterGram-; Bacilli
CapnocytophagaGram-; Bacilli
CampylobacterGram-; Bacilli
Veillonella***Gram-; COCCI***
ActinomycesGram +; Bacilli
LactobacillusGram +; Bacilli
PropionibacteriumGram +; Bacilli
EubacteriumGram +; Bacilli
EggerthellaGram +; Bacilli
BifidobacteriumGram +; Bacilli
ArachniaGram +; Bacilli
ClostridiumGram +; Bacilli
FilifactorGram +; Bacilli
Peptostreptococcus***Gram +; COCCI***

red complex

Question Answer
what are the 3 red complex?P. gingivalis, T. denticola & T. forsythia
all three of the red complex are gram _____negative

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