Bacterias gram negativas (Neisseria) Flashcards

1
Q

Neisseria spp

Morfología y motilidad

A
  • diplococos gram negativos
  • inmoviles
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2
Q

Neisseria spp

Metabolismo aerobio

A

aerobios/anaerobio facultativo

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3
Q

Neisseria Meningitidis

Nicho de colonización

A

a veces coloniza nasofaringe

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4
Q

Neisseria Meningitidis y Gonorrheae

¿Cómo se distinguen?

A

ambas oxidan glucosa pero solo la meningitidis oxida la maltosa

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5
Q

Neisseria spp

¿Qué es el medio thayer-martin?

A

altamente selectivo: contiene vancomicina, colistina y nistatina

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6
Q

Neisseria Meningitidis

Mayor factor de virulencia

A

cápsula de polisacaridos

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7
Q

Neisseria spp

Factores de virulencia

A
  • pilis (gonococo: variacion antigénica de los pili)
  • proteinas de membrana
    opa: porinas de opacidad
    rmp: proteinas de reduccion modificable
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8
Q

Neisseria Meningitidis

Mecanismo de transmision

A

por gotas

endemico y epidemico

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9
Q

Bacteria que causa principalmente meningitis bacteriana en adolescentes y adultos jovenes

A

neisseria Meningitidis

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10
Q

¿Cómo se llama cuando la Neisseria Meningitidis llega a la sangre?

Principal manfestación clínica

A

meningococemia: siembra hematogena → purpuras

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11
Q

Neisseria Gonorrheae

Enfermedades en hombres y mujeres

A
  • hombres: uretritis purulenta*
  • mujeres: cervicitis purulenta* (puede ser asintomatica)
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12
Q

Neisseria Gonorrheae

Complicaciones en hombres

A
  • prostatitis
  • epididimitis
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13
Q

Neisseria Gonorrheae

Complicaciones en mujeres

A

→ enfermedad inflamatoria pélvica (PIE)
‣ piometria
‣ salpingitis
‣ ooforitis
→ perihepatitis (sx de fitz hugh curtis)
→ infertilidad (sinequias en útero)

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14
Q

2° ETS + frecuente

A

gonorrea

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15
Q

Neisseria Gonorrheae

Otras enfermedades en mucosas y órganos

A
  • conjuntivitis purulenta (+ en recien nacidos)
  • faringitis purulenta
  • proctitis (dolor en recto)
  • gonococcemia (🩸articulaciones) → artritis séptica
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