background: selective antibody deficiency with normal immunoglobulins (sadni) may be identified as part of distinct primary or secondary immunodeficiency disorders. the clinical manifestations include recurrent, often severe or prolonged, upper or lower respiratory tract infections. objectives: to evaluate sadni in patients with recurrent sinopulmonary infections and its relation to igg subclas...

predominantly antibody deficiencies are a category of primary immunodeficiency diseases, which consist of several rare disorders such as common variable immunodeficiency (cvid) and x-linked agammaglobulinemia (xla). we evaluated the effects of cvid and xla patients’ sera as a source of microenviromental factors on maturation and function of monocyte-derived dcs. blood was collected from 10 cvid...

The Latin American Group for Primary Immunodeficiencies, formed in 1993, presently includes 12 countries. One goal was to study the frequency of primary immunodeficiencies in various regions of the American continent and to enhance knowledge about these diseases among primary-care physicians, as well as allergist-immunologists. Important for this purpose was the development of a registry of pri...

Primary immune deficiencies are a heterogeneous group of inherited disorders in which dysfunctions of the immune system cause an enhanced susceptibility to infections. Their frequency is higher in Tunisia and the Maghreb as compared to European and North American countries. Indeed, our population is characterized by a high frequency of consanguineous marriages and this may account for the highe...

Secondary antibody deficiency can occur as a result of haematological malignancies or certain medications, but not much is known about the clinical and immunological features of this group of patients as a whole. Here we describe a cohort of 167 patients with primary or secondary antibody deficiencies on immunoglobulin (Ig)-replacement treatment. The demographics, causes of immunodeficiency, di...