FA quick B cell disorders 03-29 (2) Flashcards
3 B cell disorders?
X-linked (Bruton) agammaglobulinemia;
Selective IgA deficiency;
Common variable immunodeficiency
Defect in BTK, a tyrosine kinase gene?
X-linked (Bruton) agammaglobulinemia
Defect in BTK, a tyrosine kinase gene –> no B-cell maturation?
X-linked (Bruton) agammaglobulinemia
No B cell maturation?
X-linked (Bruton) agammaglobulinemia
X-linked recessive ( inc. in Boys)?
X-linked (Bruton) agammaglobulinemia
Recurrent bacterial and enteroviral infections after 6 months (decr. maternal IgG)
X-linked (Bruton) agammaglobulinemia
Absent B cells in peripheral blood, decr. Ig of all classes?
X-linked (Bruton) agammaglobulinemia
Absent/scanty lymph nodes and tonsils (1° follicles and germinal centers absent) --> live vaccines contraindicated?
X-linked (Bruton) agammaglobulinemia
live vaccines contraindicated?
X-linked (Bruton) agammaglobulinemia
Most common 1° immunodeficiency?
Selective IgA deficiency
Majority Asymptomatic?
Selective IgA deficiency
Can see Airway and GI
infections, Autoimmune disease, Atopy, Anaphylaxis to IgA in blood products?
Selective IgA deficiency
Anaphylaxis to IgA in blood products?
Selective IgA deficiency
decr. IgA with normal IgG, IgM levels
Selective IgA deficiency
incr. susceptibility to giardiasis
Selective IgA deficiency
Can cause false-negative celiac disease test?
wtf celiac, siaip nestumo testa
Selective IgA deficiency
Defect in B-cell differentiation.
Common variable immunodeficiency
May present in childhood but usually diagnosed after puberty?
Common variable immunodeficiency
incr. risk of autoimmune disease, bronchiectasis, lymphoma, sinopulmonary infections
Common variable immunodeficiency
decr. plasma cells, decr. immunoglobulins
Common variable immunodeficiency
incr. risk of autoimmune disease?
Common variable immunodeficiency
incr. risk of bronchiectasis?
Common variable immunodeficiency
incr. risk of lymphoma?
Common variable immunodeficiency
incr. risk of sinopulmonary infections?
Common variable immunodeficiency
Can see Airway and GI
infections?
Selective IgA deficiency
Can see Autoimmune disease?
Selective IgA deficiency
Can see Atopy?
Selective IgA deficiency
Can see Anaphylaxis to IgA in blood products?
Selective IgA deficiency