Unit 3

Apuntes

Unit 3 Anti-Infectives Part 1 Anti-Infectives ► Microbiology ► study of microscopic organisms of either animal (bacteria, protozoa)or plant (fungus, mold) origin ► Bacteria ► single celled organisms (sing. bacterium) ► Normal flora ► Good bacteria found in the GI tract, nose, mouth, on skin that keep us healthy ► Pathogen ► an organism that produces an infection or disease ► Defense mechanisms ► our body’s response to something foreign (white blood cells, skin, immune response) that prevents/protects from infection ► Antibiotics ► drugs (or chemicals) that interfere with the life process of the pathogen, making them incapable of reproducing, and sometimes, killing the organism Bacteria ► Staphylococcus aureus ► Streptococcus pyogenes ► Streptococcus pneumoniae ► Mycobacterium tuberculosis ► Haemophilus influenzae Bacteria Classifications ► Named for shape and arrangement ► Morphology-shape ► Spherical-cocci ► Bacilli-rods ► Spirilla-curved rods ► Strepto-chains ► Staphylo-clusters ► Diplo-pairs ► Cell wall ► Gram positive: retain blue stain from crystal violet (purple) ► Gram negative: retain red stain from safranin (red) ...