OBJECTIVE: We undertook an investigation on the frequency and magnitude of elevated serum immunoglobulin G (IgG), and effects of treatment with L-thyroxine (T(4)) in patients with Hashimoto's thyroiditis. METHODS: Ninety-seven consecutive cases of Hashimoto's thyroiditis, 104 patients with simple goiter, and 75 normal subjects were analyzed retrospectively. Serum total T(4), thyroid stimulating hormone (TSH), microsomal hemagglutination antibody (MHA) titer, and IgG were determined in all subjects. RESULTS: IgG was significantly elevated in patients with Hashimoto's thyroiditis as a group, and elevation above the upper limit of the normal range was found mostly in patients with hypothyroidism. There is a significant negative correlation between serum total T(4) and IgG, and a significant positive correlation between TSH and IgG in patients with Hashimoto's thyroiditis. In addition, MHA titer was positively correlated with serum IgG. In a longitudinal analysis of hypothyroid patients with Hashimoto's thyroiditis, restoration of euthyroidism by L-T(4) administration was associated with a consistent decrease in serum IgG. CONCLUSION: Serum IgG concentration is increased in patients with Hashimoto's thyroiditis, particularly in hypothyroid patients, and treatment with L-T(4) in such patients lowers IgG levels.
OBJECTIVE: We undertook an investigation on the frequency and magnitude of elevated serum immunoglobulin G (IgG), and effects of treatment with L-thyroxine (T(4)) in patients with Hashimoto's thyroiditis. METHODS: Ninety-seven consecutive cases of Hashimoto's thyroiditis, 104 patients with simple goiter, and 75 normal subjects were analyzed retrospectively. Serum total T(4), thyroid stimulating hormone (TSH), microsomal hemagglutination antibody (MHA) titer, and IgG were determined in all subjects. RESULTS: IgG was significantly elevated in patients with Hashimoto's thyroiditis as a group, and elevation above the upper limit of the normal range was found mostly in patients with hypothyroidism. There is a significant negative correlation between serum total T(4) and IgG, and a significant positive correlation between TSH and IgG in patients with Hashimoto's thyroiditis. In addition, MHA titer was positively correlated with serum IgG. In a longitudinal analysis of hypothyroidpatients with Hashimoto's thyroiditis, restoration of euthyroidism by L-T(4) administration was associated with a consistent decrease in serum IgG. CONCLUSION: Serum IgG concentration is increased in patients with Hashimoto's thyroiditis, particularly in hypothyroidpatients, and treatment with L-T(4) in such patients lowers IgG levels.
Authors: Tiphaine C Martin; Mirna Šimurina; Marta Ząbczyńska; Marina Martinic Kavur; Magdalena Rydlewska; Marija Pezer; Kamila Kozłowska; Andrea Burri; Marija Vilaj; Renata Turek-Jabrocka; Milena Krnjajić-Tadijanović; Małgorzata Trofimiuk-Müldner; Ivo Ugrina; Anna Lityńska; Alicja Hubalewska-Dydejczyk; Irena Trbojevic-Akmacic; Ee Mun Lim; John P Walsh; Ewa Pocheć; Tim D Spector; Scott G Wilson; Gordan Lauc Journal: Mol Cell Proteomics Date: 2020-02-05 Impact factor: 5.911
Authors: Assim A Alfadda; Hicham Benabdelkamel; Afshan Masood; Anwar A Jammah; Aishah A Ekhzaimy Journal: Int J Mol Sci Date: 2018-01-01 Impact factor: 5.923