SciELO - Scientific Electronic Library Online

vol.69 issue4P-glycoprotein functional activity in peripheral blood lymphocytes in ulcerative colitisExenatide trials for the treatment of type 2 diabetes author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO


Medicina (Buenos Aires)

Print version ISSN 0025-7680On-line version ISSN 1669-9106


RIERA, Norma E. et al. Neutrophils without CD16b receptors. Medicina (B. Aires) [online]. 2009, vol.69, n.4, pp.442-446. ISSN 0025-7680.

Occurrence of the rare CD16b deficiency ("null" phenotype) in neutrophils from two female patients (41 and 15 years old) is reported. The first case was referred with a diagnosis of anemia related to paroxistic nocturnal hemoglobinuria and the second case, with presumptive diagnosis of immune neutropenia. In both cases, absence of CD16b expression was determined by flow cytometry without deficiencies of other neutrophil alloantigens or defects of membrane anchorage through glycosil phosphatydil inositol (GPI) linkage. Clinical manifestations in both patients could not be attributed exclusively to the absence of CD16b, as other receptors for the IgG Fc fragment (CD32 and CD64) could compensate this deficiency that occurs in < 1% of the caucasic population. Nevertheless, it is important to take this rare deficiency into account in order to prevent isoantibody formation after eventual blood transfusions, or transient neonatal immune neutropenia in children born to women with the "null" phenotype.

Keywords : Neutropenia; Neutrophils; CD16b receptors.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License