patogeneza Flashcards

1
Q

Cine joaca cel mai important rol in dezvoltarea BPOC ?

A

Inflamatia - modificarea raspunsului inflamator normal al epiteliului respirator la iritanti precum fumul de tigara
- Stresul oxidativ + excesul de proteaze

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2
Q

Stresul oxidativ

A
  • markeri crescuti - peroxidul de hiodrogen , 8 isoprostane
  • oxigantii sunt generati de fumul de tigara + substante inhalante si eliberati din macrofage si neutrofile
  • reducerea transcriptiei factorului Nrf 2 care regleaza activitatea multor gene antioxidante
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3
Q

dezechilibrul proteaze/antiproteaze

A

-distrugerea componentelor tesutului conjunctiv ( in special elastina ) decatre proteaze

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4
Q

Ce celule inflamatorii cresc in BPOC ?

A
  • macrofagele - in caile respiratorii periferice , parenchimul pulmonar , vase
  • neutrofilele -se activeaza
  • limfocitele
  • uneori si eoziniofilele
  • deficitul Ig A = translocatie bacteriana , remodelare bronsica
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5
Q

Fibroza interstitiala si peribronsica

A
  • exces de factori crestere

- inflamatie apoi fibroza

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