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Interleukin 1 beta and tumor necrosis factor levels in stored platelet concentrates and the association with gene polymorphisms. 2004

M Addas-Carvalho, and A F Origa, and S T O Saad
Hematology and Transfusion Medicine Center, Universidade Estadual de Campinas-UNICAMP, Brazil. maddas@unicamp.br

BACKGROUND Cytokines (IL-1beta and TNF) generated by WBCs during storage of PLT concentrates have been associated with febrile nonhemolytic transfusion reactions. METHODS This study was undertaken to investigate whether there is an association between the polymorphisms of IL1B -511C/T and +3953C/T, IL1RN intron 2 VNTR and TNFA-308G/A genes and the increase of cytokines during the storage of PLT concentrates produced by plasma-rich PLTS (PRP-PC) or apheresis PLTs. RESULTS Thirty PRP-PCs were studied and a progressive increase of IL-1beta and TNF during storage was revealed. IL1-beta and TNF levels were inversely correlated with the content of PLTs in PRP-PCs detected on Day 3 (p = 0.004) and Day 5 (p = 0.019), but not on Day 7. There was association of IL1B-511T polymorphism and IL-1beta levels (Day 5, p = 0.063, only tendency and on Day 7, p = 0.038, significant). There was no association of the other polymorphisms (IL1B+3953C/T, IL1RN intron 2 and TNFA-308G/A) with their respective cytokines. CONCLUSIONS The great variation of cytokine levels in the plasma of PLT concentrates (PCs) during storage may also be caused by cytokine gene polymorphisms, as well as WBC contamination, material that the bags are made of, and storage time, as previously described.

UI MeSH Term Description Entries
D007375 Interleukin-1 A soluble factor produced by MONOCYTES; MACROPHAGES, and other cells which activates T-lymphocytes and potentiates their response to mitogens or antigens. Interleukin-1 is a general term refers to either of the two distinct proteins, INTERLEUKIN-1ALPHA and INTERLEUKIN-1BETA. The biological effects of IL-1 include the ability to replace macrophage requirements for T-cell activation. IL-1,Lymphocyte-Activating Factor,Epidermal Cell Derived Thymocyte-Activating Factor,Interleukin I,Macrophage Cell Factor,T Helper Factor,Epidermal Cell Derived Thymocyte Activating Factor,Interleukin 1,Lymphocyte Activating Factor
D011110 Polymorphism, Genetic The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level. Gene Polymorphism,Genetic Polymorphism,Polymorphism (Genetics),Genetic Polymorphisms,Gene Polymorphisms,Polymorphism, Gene,Polymorphisms (Genetics),Polymorphisms, Gene,Polymorphisms, Genetic
D001792 Blood Platelets Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation. Platelets,Thrombocytes,Blood Platelet,Platelet,Platelet, Blood,Platelets, Blood,Thrombocyte
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014409 Tumor Necrosis Factor-alpha Serum glycoprotein produced by activated MACROPHAGES and other mammalian MONONUCLEAR LEUKOCYTES. It has necrotizing activity against tumor cell lines and increases ability to reject tumor transplants. Also known as TNF-alpha, it is only 30% homologous to TNF-beta (LYMPHOTOXIN), but they share TNF RECEPTORS. Cachectin,TNF-alpha,Tumor Necrosis Factor Ligand Superfamily Member 2,Cachectin-Tumor Necrosis Factor,TNF Superfamily, Member 2,TNFalpha,Tumor Necrosis Factor,Cachectin Tumor Necrosis Factor,Tumor Necrosis Factor alpha

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