Resit-pathogenicity Flashcards
(8 cards)
Gnotobiology
rising mammals under germ-free environments, or conditions with
controlled spectra and numbers of microorganisms.
Why would u raise mammals in germ free conditions
- to control the environment in which a multicellular organism develops ;
- to use genetically modified model systems;
- to study the establishment and maintenance of the immune system
- to provide new insights on aetiologies of infectious diseases
and potentially cancer.
What is disease
Dysfunction of organs, cells or metabolic pathways in the body
Health
optimal state of the body.
All organs and their functions are in the perfect conditions, as
they are supposed to be in accordance of genetics, physiology
and biochemistry of a given organism..
Pathogenesis
is a set of actual mechanisms by which an
etiological factor causes a disease
Parasitic association (parasitism)
one organism (a parasite) lives and benefits for the expense of another.
Symbiotic association (symbiosis)
both organisms benefits from
each another
Commensal association (commensalism
one organism benefits from another, without obvious harm for the last.
Opportunistic pathogen
cause disease in hosts with a reduced defensive capacity
(for example, a decline of the immune system).