Flashcards
Microbial Disease Mechanisms: Host-Pathogen Interactions
Flashcards do conjunto (37)
- 1Pathogenparasite capable of causing disease
- 2mutualismboth members benefit
- 3commensalismOne benefits other not harmed
- 4parasitismone benefits other not harmed
- 5contaminationmicrobes present
- 6infectionsmultiplication of any parasitic organism within hosts body
- 7diseasedisturbance of health
- 8virulenceintensity of disease
- 9attenuationweakening of the disease-producing ability of pathogen
- 10resident microfloranormal microflora always present
- 11transient microfloracan be present but not normal
- 12opportuniststake advantage of opportunities to cause disease
- 13infectious diseasecaused by infectious agents, structural of functional genetics defects
- 14noninfectious diseasecaused by any factor other than infectious
- 15Classification of diseases (10)Inherited
Congenital
Degenerative
Nutritional
endocrine
mental
immunological
neoplastic
Iatrogenic
Idiopathic - 16Disease Processstructures for adhesion to cells and tissues
enzymes that help evade host defenses
Protect the organism from host defense
Toxin that can directly cause disease - 17Direct actions of bacteriaadhesion
attachment
colonization
invasiveness - 18bacterial toxinsany substance poisonous to other organisms
(exo and endo) - 19exotoxinsoluble substances secreted in host tissue
- 20endotoxinpart of cell wall and released into host tissue from gram negative bacteria
- 21hemolysisbreak down of RBC's
(alpha or beta) - 22Clinical uses for toxinsoromandibular (patients jaw clenches toxins help relax)
- 23How viruses can cause diseasereplicate after attachment to host cells
CPE
Productive
Abortive - 24productive viral infectionvirus enters host cell and produce infectious offspring
- 25abortive viral infectionvirus enters a cell but unable to express genes to make an offspring
- 26latent viral infectionweak immune system allows virus to multiply
- 27persistant viral infectioncontinued production of viruses over many months or years
- 28types of infectious diseaseacute
chronic
subacute
latent - 29acutedevelops rapidly
- 30chronicdevelops slowly
- 31subacuteindeterminate between acute and chronic
- 32latentperiods of inactivity (herpes)
- 33Stages of a diseaseIncubation
prodromal
invasive
decline
convalescent - 34incubation periodbetween infection and appearance of signs and symptoms
- 35prodromal phasenonspecific symptoms (tired, headache)
- 36invasive periodexperiences signs and symptoms
- 37declinehost defenses and treatment overcome the pathogen
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- FlashCards sobre Sem título, criado por mlr27765 em 06-11-2014.
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