BLyS and April serum levels in patients with autoimmune thyroid diseases. 2010

M Fabris, and F Grimaldi, and D Villalta, and A Picierno, and C Fabro, and M Bolzan, and S De Vita, and E Tonutti
Clinic of Rheumatology, Azienda Ospedaliero-Universitaria of Udine, Piazzale S. Maria della Misericordia, 1, 33100 Udine, Italy. fabris.martina@aoud.sanita.fvg.it

Elevated B-Lymphocyte Stimulator (BLyS) and April (a proliferation-inducing ligand) expressions characterize several autoimmune diseases. We here analysed the possible role of BLyS and April in autoimmune thyroid diseases (AITD), comprising Hashimoto's thyroiditis (HT) and Graves' disease (GD). Seventy-seven patients with AITD and 77 blood donors (HBD) were enrolled in the study. Serum BLyS and April levels were assessed by ELISA. Results indicated a significant upregulation of BLyS in AITD patients (1.12+/-0.39 ng/ml versus 0.666+/-0.240 ng/ml in HBD; p<0.0001), with GD patients presenting higher BLyS levels than HT patients (1.22+/-0.42 ng/ml versus 1.07+/-0.38 ng/ml; p=0.0393). In contrast, April levels were downregulated, but only in HT patients [9.9+/-36.6 (median 0) ng/ml versus 7.4+/-22.1 (median 1.16) ng/ml in HBD; p=0.003; and versus 4.2+/-5.9 ng/ml (median 0.9) ng/ml in GD; p=0.0353]. In HT patients, Levo-thyroxine supplementation further increased BLyS and tended to normalize April levels. Neither BLyS nor April did correlate with the levels of the pathognomonic autoantibodies (TPOAb, TgAb, TRAb). Data are preliminary, but, for the first time, we provide the analyses of BLyS and April levels in AITD patients, suggesting new tools for the diagnosis, prognosis and possible therapeutic management of AITD.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D005260 Female Females
D006111 Graves Disease A common form of hyperthyroidism with a diffuse hyperplastic GOITER. It is an autoimmune disorder that produces antibodies against the THYROID STIMULATING HORMONE RECEPTOR. These autoantibodies activate the TSH receptor, thereby stimulating the THYROID GLAND and hypersecretion of THYROID HORMONES. These autoantibodies can also affect the eyes (GRAVES OPHTHALMOPATHY) and the skin (Graves dermopathy). Basedow's Disease,Exophthalmic Goiter,Goiter, Exophthalmic,Graves' Disease,Basedow Disease,Hyperthyroidism, Autoimmune,Basedows Disease,Disease, Basedow,Disease, Basedow's,Disease, Graves,Disease, Graves',Exophthalmic Goiters,Goiters, Exophthalmic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013967 Thyroiditis, Autoimmune Inflammatory disease of the THYROID GLAND due to autoimmune responses leading to lymphocytic infiltration of the gland. It is characterized by the presence of circulating thyroid antigen-specific T-CELLS and thyroid AUTOANTIBODIES. The clinical signs can range from HYPOTHYROIDISM to THYROTOXICOSIS depending on the type of autoimmune thyroiditis. Autoimmune Thyroiditis,Thyroiditis, Lymphocytic,Thyroiditis, Lymphomatous,Autoimmune Thyroiditides,Lymphocytic Thyroiditides,Lymphocytic Thyroiditis,Lymphomatous Thyroiditides,Lymphomatous Thyroiditis,Thyroiditides, Autoimmune,Thyroiditides, Lymphocytic,Thyroiditides, Lymphomatous
D015536 Down-Regulation A negative regulatory effect on physiological processes at the molecular, cellular, or systemic level. At the molecular level, the major regulatory sites include membrane receptors, genes (GENE EXPRESSION REGULATION), mRNAs (RNA, MESSENGER), and proteins. Receptor Down-Regulation,Down-Regulation (Physiology),Downregulation,Down Regulation,Down-Regulation, Receptor
D015854 Up-Regulation A positive regulatory effect on physiological processes at the molecular, cellular, or systemic level. At the molecular level, the major regulatory sites include membrane receptors, genes (GENE EXPRESSION REGULATION), mRNAs (RNA, MESSENGER), and proteins. Receptor Up-Regulation,Upregulation,Up-Regulation (Physiology),Up Regulation
D050031 Hashimoto Disease Chronic autoimmune thyroiditis, characterized by the presence of high serum thyroid AUTOANTIBODIES; GOITER; and HYPOTHYROIDISM. Hashimoto's Disease,Chronic Lymphocytic Thyroiditis,Hashimoto Struma,Hashimoto Thyroiditis,Hashimoto's Struma,Hashimoto's Syndrome,Chronic Lymphocytic Thyroiditides,Disease, Hashimoto,Disease, Hashimoto's,Hashimoto Syndrome,Hashimoto Thyroiditides,Hashimoto's Syndromes,Hashimotos Disease,Hashimotos Syndrome,Lymphocytic Thyroiditides, Chronic,Lymphocytic Thyroiditis, Chronic,Syndrome, Hashimoto's,Syndromes, Hashimoto's,Thyroiditides, Chronic Lymphocytic,Thyroiditides, Hashimoto,Thyroiditis, Chronic Lymphocytic,Thyroiditis, Hashimoto
D053264 B-Cell Activating Factor A tumor necrosis factor superfamily member that plays a role in the regulation of B-LYMPHOCYTE survival. It occurs as a membrane-bound protein that is cleaved to release an biologically active soluble form with specificity to TRANSMEMBRANE ACTIVATOR AND CAML INTERACTOR PROTEIN; B-CELL ACTIVATION FACTOR RECEPTOR; and B-CELL MATURATION ANTIGEN. Antigens, CD257,BAFF Ligand,CD257 Antigens,Tumor Necrosis Factor Ligand Superfamily Member 13b,B Cell Activating Factor,B Lymphocyte Stimulator,B-Lymphocyte Activating Factor,BLyS Protein,CD257 Antigen,TALL-1 Protein,THANK Protein,TNF Superfamily, Member 13b,TNF and APOL-Related Leukocyte Expressed Ligand 1,TNFSF13B Protein,Activating Factor, B-Cell,Activating Factor, B-Lymphocyte,Antigen, CD257,B Lymphocyte Activating Factor,TALL 1 Protein,TNF and APOL Related Leukocyte Expressed Ligand 1

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