Related Experiment Video
Updated: May 9, 2026

Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein
Published on: October 12, 2017
The effect of levothyroxine replacement therapy on lipid profile and oxidative stress parameters in patients with
Serkan Mutlu1, Adem Parlak2, Umit Aydogan3
1Department of Family Medicine, Gulhane School of Medicine, Ankara, Turkey. serkanmutlu17@yahoo.com.
Abstract:
The purpose of this present study is to investigate the levels of oxidative stress parameters in patients with subclinical hypothyroidism (SH) and the effects of levothyroxine (LT4) replacement therapy on these parameters and lipid profile. At the beginning of the study blood samples were collected from the patients in order to analyse oxidative stress parameters, lipid profile and biochemical markers. After replacement therapy with LT4, in the third month, same tests were performed again. At the baseline superoxide dismutase (SOD) levels were found to be higher in SH patients, compared to the euthyroid group. After LT4 therapy, statistically significant decreases in SOD and catalase levels and increase in HDL-C levels were noticed. LT4 treatment was found to have positive effects on oxidative stress indicators and HDL-C levels.
Related Concept Videos
Hypothyroidism II: Pathophysiology
Hyperthyroidism II: Pathophysiology
Synthesis and Regulation of Thyroid Hormones
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The iodine is then...
Hyperthyroidism I: Introduction
Atherosclerosis III: Management
Functions of Thyroid Hormones
TH is indispensable for the normal development and maturation of the skeletal, muscular, and nervous systems during fetal and childhood growth. It facilitates bone mineral turnover and regulates protein synthesis in developing tissues, contributing significantly to overall growth and...
