Curs 5- Eritropoieza Flashcards

1
Q

Celule stem multipotente

A

spre linia limfoida -> limfocite, cel NK

spre linia mieloida -> celalte tp de cel sg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Celula stem multipotenta orientata spre linia mieloida

A

2 progenitori bipotenti: -> linia e-megakarioblas

-> linia granulocitara-macrofagica

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Stadiile CFU-e

A

CFU-e => proeritroblast=>eritroblast bazofil=>eritroblast policromatofil=>eritroblast acidofil=>reticulocit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A/F: Reticulocitele prezinta receptori pentru EPO

A

Fals, nu prezinta!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Cum parasesc reticulocitele maduva

A

prin citodiabaza

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Eritron

A

totalitatea E circulante si imature, din maduva, 4KG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Productia de EPO

A

controlata esential de nivelurile O2 din rinichi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Controlul sintezei si eliberarii de EPO este realizat de

A

HIF-1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Actiunile HIF

A
  • intensifica sinteza de EPO
  • creste nr de receptori pt EPO
  • favorizeaza patrunderea Fe in maduva
  • creste sinteza de transferina
  • creste nr recept pt transferina
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Cine mai stimuleaza sinteza renala de EPO

A

catecolamine si unele prostaglandine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Unde se sintetizeaza EPO

A

in celule speciale din rinichi, ficat, creieri

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Unde se sintetizeaza HIF

A

cel endot vascular, cel interstitiu renale, hepatocite, cardiomiocite, astrocite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Actiunile EPO

A
  • stimuleaza diviz celulare
  • stim diferentierea celulara
  • previne apoptoza progenitorilor eritroizi
How well did you know this?
1
Not at all
2
3
4
5
Perfectly