MindMap Gallery Pathogenic cocci
The mind map about pathogenic cocci specifically includes knowledge about Staphylococcus, Streptococcus, Enterococcus, Neisseria, and Moraxella catarrhalis. I believe you will gain something from reading this.
Edited at 2023-10-25 21:40:26This is a mind map about bacteria, and its main contents include: overview, morphology, types, structure, reproduction, distribution, application, and expansion. The summary is comprehensive and meticulous, suitable as review materials.
This is a mind map about plant asexual reproduction, and its main contents include: concept, spore reproduction, vegetative reproduction, tissue culture, and buds. The summary is comprehensive and meticulous, suitable as review materials.
This is a mind map about the reproductive development of animals, and its main contents include: insects, frogs, birds, sexual reproduction, and asexual reproduction. The summary is comprehensive and meticulous, suitable as review materials.
This is a mind map about bacteria, and its main contents include: overview, morphology, types, structure, reproduction, distribution, application, and expansion. The summary is comprehensive and meticulous, suitable as review materials.
This is a mind map about plant asexual reproduction, and its main contents include: concept, spore reproduction, vegetative reproduction, tissue culture, and buds. The summary is comprehensive and meticulous, suitable as review materials.
This is a mind map about the reproductive development of animals, and its main contents include: insects, frogs, birds, sexual reproduction, and asexual reproduction. The summary is comprehensive and meticulous, suitable as review materials.
Pathogenic cocci
Staphylococcus
Staphylococcus aureus
Classification
cause human disease
Staphylococcus aureus
Staphylococcus epidermidis
Staphylococcus capitis
Staphylococcus hominis
can produce autocoagulase
coagulase-positive staphylococci
Mainly Staphylococcus aureus
Coagulase Negative Staphylococci (CNS)
Phage typing
Divide golden grapes into 4-5 groups type 26
common biological properties
Gram-positive, spherical or oval, arranged in grape clusters, without flagella, without spores, and generally does not form a capsule
Aerobic or facultative anaerobic, low nutritional requirements, most strains are highly salt-tolerant, resistant to drying, produce pigments, and have a transparent β-hemolytic ring
100-150g/LNaCl medium can grow, catalase positive, oxidase negative
Streptococcus
Streptococcus pneumoniae
Classification
Hemolysis on blood agar plates
Group A hemolytic Streptococcus (alpha)
Grass green hemolytic ring, RBC not dissolved
opportunistic pathogens
Beta-hemolytic Streptococcus (β)
Transparent colorless hemolysis ring, RBCs have been dissolved
Highly pathogenic
Streptococcus G
No hemolysis ring
Not pathogenic
The antigen structure (C antigen) is different
Beta-hemolytic streptococci (groups A, C, G)
Group B beta-hemolytic Streptococcus (Streptococcus agalactiae)
Gynecological and neonatal infections
Non-hemolytic group D streptococci (Streptococcus bovis)
alpha-hemolytic streptococci
Streptococcus pneumoniae
Lobar pneumonia
viridans streptococci
normal flora
common biological properties
Gram-positive, spherical or oval, chain-like arrangement, no tooth cells, no flagella, capsule
High nutritional requirements, blood or serum glucose, amino acids, vitamins, etc. need to be added to the culture medium. Most are facultative anaerobics, a few are obligate anaerobics, the optimal temperature is 35, and characteristic hemolysis phenomenon
Streptococcus pneumoniae cells are spear-shaped, arranged in pairs, CO2 can promote its growth, have a grass-green hemolytic ring, and produce autolytic enzyme umbilical fossa-shaped colonies.
Biochemical properties
Ferment glucose and various sugars without producing gas
catase negative
The antigen structure is complex, mainly polysaccharide antigens and protein antigens
The resistance of Streptococcus pneumoniae to penicillin has attracted great attention
Enterococcus
common biological properties
Gram-positive, spores-free, capsule-free
Facultative anaerobic, able to grow at 10-45°C, tolerant to high salt (65% sodium chloride medium) and high alkali (pH 5.6 broth)
Biochemical properties
catalase positive
Bile aesculin positive
PYR positive
Resistant to cephalosporins, lincomycins, and sulfa antibiotics
Neisseria
Neisseria meningitidis, Neisseria gonorrhoeae
Classification
Neisseria meningitidis, Neisseria gonorrhoeae
Pathogenic
the remaining
Saprophytic bacteria, normal flora of nose, throat and oral mucosa
common biological properties
Gram-negative, diplococcus, kidney-shaped or coffee bean-shaped, concave opposite, no spores, no flagella
High nutritional requirements. Blood or serum needs to be added to the culture medium to grow. It will not grow below 30°C.
Obligately aerobic, sensitive to hot and cold drying and disinfectants → Specimens should be kept warm and moisturized and quickly sent for inspection
Neisseria meningitidis: blood agar plate or chocolate agar plate, 5% carbon dioxide, round convex, smooth and moist, neat edges, transparent, dew-shaped colonies
No hemolysis on blood plate. Can produce autolytic enzyme and can autolyse after 24 hours
Decompose glucose and maltose, produce acid but not gas
Neisseria gonorrhoeae: chocolate-colored flat plates, round convex, gray-white, opaque, smooth colonies. autolytic
Only decomposes glucose and produces acid but no gas
Biochemical properties
oxidase positive
Catalytic enzyme positive
Moraxella catarrhalis
common biological properties
Gram-negative, diplococci, Neisseria-like, non-spored, non-capsulated, non-flagellated
The nutritional requirements are not high and it grows well at 22°C. It grows better on blood agar plates and chocolate agar plates.
Blood agar plate has round, convex, smooth, gray and opaque bacterial colonies; if the culture continues, the surface of the colonies will be dry and hard, and the colonies can move as a whole on the surface of the culture medium with the push of the inoculation loop. Not easy to emulsify, self-coagulating in physiological saline
Biochemical properties
Oxidase positive
catalase positive
Does not break down sugars
reduced nitrate
DNase positive
Differentiation of Moraxella catarrhalis and Neisseria spp.: Tributyrin hydrolysis test
Moraxella catarrhalis butyrate lipase, which fluoresces blue under ultraviolet light
Positive
Neisseria does not contain this enzyme
Negative