Horm Metab Res 2018; 50(09): 653-660
DOI: 10.1055/a-0669-1584
Endocrine Care
© Georg Thieme Verlag KG Stuttgart · New York

Determinants of Visfatin/NAMPT Serum Concentration and its Leukocyte Expression in Hyperthyroidism

Nadia Sawicka-Gutaj
1   Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
,
Ariadna Zybek-Kocik
1   Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
,
Michał Kloska
2   Department of Gastroenterology, Metabolic Diseases and Dietetics, Poznan University of Medical Sciences, Poznań, Poland
,
Agata Czarnywojtek
1   Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
3   Department of Pharmacology, Poznan University of Medical Sciences, Poznań, Poland
,
Jerzy Sowiński
1   Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
,
Bartłomiej Budny
1   Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
,
Kosma Woliński
1   Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
,
Katarzyna Ziemnicka
1   Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
,
Dorota Mańkowska-Wierzbicka
2   Department of Gastroenterology, Metabolic Diseases and Dietetics, Poznan University of Medical Sciences, Poznań, Poland
,
Marek Ruchała
1   Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
› Author Affiliations
Further Information

Publication History

received 25 October 2017

accepted 31 July 2018

Publication Date:
05 September 2018 (online)

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Abstract

We aimed to analyze the potential influence of thyroid autoimmunity on visfatin/NAMPT serum concentration and its leukocyte expression in hyperthyroid patients. This is a single-center, cross-sectional study with consecutive enrollment. All patients with newly diagnosed overt hyperthyroidism in a course of Graves' disease or toxic nodular goiter were included in the study. They underwent physical examination, laboratory investigation, body composition analysis, and thyroid ultrasound. NAMPT mRNA leukocyte expressions were measured using RT-qPCR. Of the 173 patients, 95 were enrolled in further analysis [67 patients with Graves' disease (GD) and 28 with toxic nodular goiter (TNG)]. Control group consisted of 43 healthy volunteers adjusted for age, sex, and BMI. Higher NAMPT/visfatin serum concentration was found in patients with GD comparing with patients with TNG (p=0.03855). We found significant NAMPT leukocyte overexpression in GD patients (n=32) as compared to TNG patients (n=18) and euthyroid controls (n=24) (p=0.005965). Simple linear regression analysis revealed that NAMPT/visfatin serum concentration was significantly associated with NAMPT leukocyte expression, thyroid autoimmunity, age, HOMA-IR, and fat mass percentage (FM%). NAMPT leukocyte expression was related to thyroid autoimmunity, age, and TRAb levels. The stepwise multiple regression analysis revealed FM% and HOMA-IR as independent predictors of visfatin/NAMPT serum levels. In a separate stepwise multiple regression analysis, we confirmed the association between NAMPT leukocyte expression and TRAb levels. We found that fat mass percentage together with HOMA-IR are the most significant predictors of visfatin/NAMPT serum elevation in hyperthyroid patients.