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Stoica RA, Ancuceanu R, Costache A, Ștefan SD, Stoian AP, Guja C, Ștefan-van Staden RI, Popa-Tudor I, Serafinceanu C, Ionescu-Tîrgoviște C. Subclinical hypothyroidism has no association with insulin resistance indices in adult females: A case-control study. Exp Ther Med 2021; 22:1033. [PMID: 34373719 DOI: 10.3892/etm.2021.10465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/16/2021] [Indexed: 12/16/2022] Open
Abstract
Longitudinal studies have indicated an association between thyroid function and insulin resistance (IR) or a neutral relationship. Both the lowest tertile of free thyroxine (fT4) and the highest tertile of free triiodothyronine (fT3) were found to be associated with IR in cross-sectional studies. The aim of the present study was to analyze the association between IR and subclinical hypothyroidism in a female adult population from Bucharest, Romania. This is a retrospective pilot case-control study that included female patients examined by two endocrinologists and a diabetologist in an outpatient clinic. The retrospective follow-up had a one-year duration and included the evaluation of thyroid function tests and IR indices based on fasting insulinemia and C-peptide. The study included 176 women, 91 with subclinical hypothyroidism, with a median age of 60±17 years and a mean body mass index (BMI) of 27.79±4.76 kg/m2. The majority of the population (50%) was diagnosed with autoimmune thyroiditis, and 17.05% with goitre. The univariate logistic regression using hypothyroidism as the explaining variable found no evidence of a significant relationship between a decreased thyroid function and IR (OR 1.32; P=0.36). Metabolic syndrome was probably the most important determinant of IR in the population group studied. Thus, it was not the thyroid function per se, but the coexistence of other elements of this syndrome that prevailed in determining IR. Advantages to the study are the design that permitted evaluation of IR and the thyroid function at different moments in time as well as the uniformity of the blood tests. The multivariate analyses were adjusted for age, lipid profile and treatment; however, one limiting factor was the absence of other hormonal blood tests. In summary, there was no association between the thyroid function tests (TSH, fT4) and IR indices in adult Romanian women in a case-control study with one-year retrospective follow-up.
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Affiliation(s)
- Roxana Adriana Stoica
- Department of Diabetes, Nutrition and Metabolic Diseases, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Robert Ancuceanu
- Department of Botanical Pharmaceutics, 'Carol Davila' University of Medicine and Pharmacy, 020956 Bucharest, Romania
| | - Adrian Costache
- Department of Pathology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Simona Diana Ștefan
- Department of Diabetes, Nutrition and Metabolic Diseases, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Anca Pantea Stoian
- Department of Diabetes, Nutrition and Metabolic Diseases, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Cristian Guja
- Department of Diabetes, Nutrition and Metabolic Diseases, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Raluca Ioana Ștefan-van Staden
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 060021 Bucharest, Romania
| | - Ioana Popa-Tudor
- Laboratory of Electrochemistry and PATLAB, National Institute of Research for Electrochemistry and Condensed Matter, 060021 Bucharest, Romania
| | - Cristian Serafinceanu
- Department of Diabetes, Nutrition and Metabolic Diseases, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Constantin Ionescu-Tîrgoviște
- Department of Diabetes, Nutrition and Metabolic Diseases, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
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