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Systemic reduction of soluble complement receptor II/CD21 during pregnancy to levels reminiscent of autoimmune disease

  • Complement receptor type II/CD21 is the functional receptor for complement fragments such as C3d, iC3b and the Epstein Barr Virus. A soluble form of CD21 (sCD21) is shed from lymphocytes surface and is able to bind to its ligands found in the plasma. The amount of sCD21 in serum may modulate immunity as the plasma levels are correlated with autoimmune conditions, such as Systemic Lupus Erythematosus, Rheumatoid Arthritis and Sjoegren’s Syndrome. Because of the fact that pregnancy may lead to remission of autoimmune diseases we determined the serum levels of sCD21 during pregnancy and postpartum. The serum sCD21 levels during pregnancy are significantly lower as compared to that of the healthy controls. There were no significant differences in sCD21 levels between the mother and the cord blood also immediately after parturition. Restoration of sCD21 levels to normal values takes between 6 weeks and 1 year after childbirth. Our study indicates that CD21-shedding is affected during pregnancy comparable to that of autoimmunity.

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Document Type:Article
Author:Madhan Masilamani, Narendiran Rajasekaran, Anjana Singh, Hui-Zhi Low, Kerstin Albus, Swantje Anders, Frank Behne, Peter Eiermann, Katharina Koenig, Clarissa Mindnich, Teodora Ribarska, Harald Illges
Parent Title (English):Rheumatol Int. (Rheumatology International)
First Page:1137
Last Page:1141
Pubmed Id:http://www.ncbi.nlm.nih.gov/pubmed?term=18500464
Date of first publication:2008/05/24
Tag:Complement receptor 2 /CD21; Pregnancy; Shedding
Departments, institutes and facilities:Fachbereich Angewandte Naturwissenschaften
Institut für funktionale Gen-Analytik (IFGA)
Dewey Decimal Classification (DDC):6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Entry in this database:2015/04/02