PMID- 14984503 OWN - NLM STAT- MEDLINE DCOM- 20040504 LR - 20190705 IS - 0007-1048 (Print) IS - 0007-1048 (Linking) VI - 124 IP - 4 DP - 2004 Feb TI - Intravenous (IV) anti-D and IV immunoglobulin achieve acute platelet increases by different mechanisms: modulation of cytokine and platelet responses to IV anti-D by FcgammaRIIa and FcgammaRIIIa polymorphisms. PG - 511-8 AB - Intravenous (IV) anti-D and IV immunoglobulin (IVIG) slow the Fcgamma receptor (FcgammaR)-mediated destruction of antibody-coated platelets in patients with immune thrombocytopenic purpura (ITP). This pilot study explored the mechanism of these immunoglobulin preparations by measuring interleukin-10 (IL-10), monocyte chemoattractant protein-1 (MCP-1), IL-6 and tumour necrosis factor alpha (TNFalpha), before and after infusion and by assessing the effect of FcgammaRIIa and FcgammaRIIIa polymorphisms on both cytokine and haematologic responses to anti-D. Following IVIG, only IL-10 was increased at 2 h and MCP-1 on day 7 (P < 0.05). In contrast, 2 h after anti-D infusion, plasma levels of all four cytokines were increased (P < 0.01); five of six patients with the highest MCP-1, IL-6 and TNFalpha levels had chills. Higher IL-10 levels correlated with platelet increases at 24 h and haemoglobin decreases at day 7 (P < 0.025). Patients with the FcgammaRIIa-131HH genotype had significantly higher MCP-1, IL-6 and TNFalpha levels. Patients with the FcgammaRIIIa-158VF genotype had higher platelet increments at day 7 (P < 0.05). Soluble CD16 (sCD16) was increased 2 h after IV anti-D; day 7 levels correlated with day 7 haemoglobin decreases (P < 0.01). In conclusion, the relationship of FcgammaRIIa and FcgammaRIIIa polymorphisms with both cytokine levels and platelet increments implicated these receptors in responses to anti-D and supported different mechanisms of FcgammaR interaction to those seen with IVIG. FAU - Cooper, Nichola AU - Cooper N AD - Division of Hematology/Oncology, Department of Pediatrics, New York Presbyterian Hospital - Weill Medical College of Cornell University, New York, NY 10021, USA. nicholacooper@yahoo.com FAU - Heddle, Nancy M AU - Heddle NM FAU - Haas, Masja AU - Haas M FAU - Reid, Marion E AU - Reid ME FAU - Lesser, Martin L AU - Lesser ML FAU - Fleit, Howard B AU - Fleit HB FAU - Woloski, B M R AU - Woloski BM FAU - Bussel, James B AU - Bussel JB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Br J Haematol JT - British journal of haematology JID - 0372544 RN - 0 (Antigens, CD) RN - 0 (Cytokines) RN - 0 (Fc gamma receptor IIA) RN - 0 (Glucocorticoids) RN - 0 (Immunoglobulins, Intravenous) RN - 0 (Isoantibodies) RN - 0 (RHO(D) antibody) RN - 0 (Receptors, IgG) RN - 0 (Rh-Hr Blood-Group System) RN - 0 (Rho(D) Immune Globulin) RN - VB0R961HZT (Prednisone) SB - IM MH - Adolescent MH - Adult MH - Antigens, CD/genetics MH - Blood Platelets/*immunology MH - Cytokines/*biosynthesis MH - Female MH - Glucocorticoids/therapeutic use MH - Humans MH - Immunoglobulins, Intravenous/*therapeutic use MH - Isoantibodies/adverse effects/*therapeutic use MH - Male MH - Middle Aged MH - Phenotype MH - Pilot Projects MH - Platelet Count MH - Polymorphism, Genetic MH - Prednisone/therapeutic use MH - Purpura, Thrombocytopenic, Idiopathic/blood/immunology/*therapy MH - Receptors, IgG/genetics MH - Rh-Hr Blood-Group System/blood MH - Rho(D) Immune Globulin EDAT- 2004/02/27 05:00 MHDA- 2004/05/05 05:00 CRDT- 2004/02/27 05:00 PHST- 2004/02/27 05:00 [pubmed] PHST- 2004/05/05 05:00 [medline] PHST- 2004/02/27 05:00 [entrez] AID - 4804 [pii] AID - 10.1111/j.1365-2141.2004.04804.x [doi] PST - ppublish SO - Br J Haematol. 2004 Feb;124(4):511-8. doi: 10.1111/j.1365-2141.2004.04804.x.