Endocrine Abstracts

Background: Age-associated double negative (DN) B memory cells lacking surface expression of CD27 and IgD have been associated with proinflammatory characteristics, higher disease activity in autoimmune diseases and disease-specific autoantibodies. We studied the distribution of DN B cells in Polycystic Ovary Syndrome (PCOS), their surface markers and cytokine production.Methods: CD19+ cell subpopulations on the basis of IgD and CD27 expression were phen...

Objective: Age-associated double negative (DN) B memory cells lacking surface expression of CD27 and immunoglobulin D (IgD) are associated with proinflammatory characteristics and higher disease activity in autoimmune diseases. We first characterized B cells phenotypes in women with and without polycystic ovary syndrome (PCOS). We then took an in vivo approach, transferring purified IgG extracted from serum of hyperandrogenic women with PCOS to mice to establish wheth...