Hemochromatose Flashcards

1
Q

Definitie Hemochromatose?

A

when body iron levels reach > 20 g

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2
Q

Definitie hemochromatose?

A

when body iron levels reach > 20 g

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3
Q

Vormen van hemochromatose?

A

Primaire (hereditaire) hemochromatose
o Homozygote of heterozygote defect van HFE gen
o Autosomale recessieve overerving

Secundaire hemochromatose
o Veroorzakt door ijzeroverload: Transfusie-gerelateerd
 Ineffectieve erythropoiesis: Thalassemia, Sickel-cel anemie

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4
Q

Kliniek Hemochromatose?

A

Orgaanspecifieke symptomen:

  • Lever: hepatomegalie, cirrose, HCC
  • pancreas: diabetes
  • Huid: bronze huid
  • Hart: cardiomyopathie, cardiale arritmie, hartfalen
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5
Q

BO Hemochromatose?

A
  • Labo: gestegen ijzer, gestegen ferritine, gedaalde totale ijzer-bindingscapaciteit, gestegen transferrine, gestegen leverezymen
  • MRI lever
  • leverbiopsie
  • Genetische testing
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6
Q

Behandeling Hemochromatose?

A

Aderlatingen:
o Doel = Ferritine 50 – 100 µg/l
o Ijzer op de rand van anemie houden zodat er continu ijzerverbruik is

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7
Q

Welk gen is aangetast bij hereditaire hemochromatose?

A

HFE gen

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8
Q

PF primaire hemochromatose?

A

HFE-gen defect (homozygoot) → gebrekkige binding van transferrine aan zijn receptor → ↓ hepcidinesynthese door de lever → ongeregelde ferroportineactiviteit in enterocyten → ↑ intestinale ijzerabsorptie → ijzerophoping in het hele lichaam → schade aan de aangetaste organen

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9
Q

Complicaties hemochromatose?

A
  • Levercirrose

- Hepatocellulair carcinoom

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