Abstract
Background:
Thyroid hormones are effective on oxidant-antioxidant balance by leading basal metabolic rate. In this study, the effects of altered thyroid states on low density lipoprotein (LDL) oxidation and oxidative stress parameters were investigated in an experimental animal model.
Methods:
Thirty female Wistar Albino rats were equally divided into 3 groups as follows: control group; hypothyroid group (methimazole (75 mg/100 g was added to diet); hyperthyroid group [L-thyroxine (0.4 mg/100 g was added to diet)]. Oxidized LDL (ox-LDL) levels, thyroid, and lipid parameters were determined in serum. Also lipid peroxidation (LPO), sialic acid (SA) and glutathione levels (GSH), as well as superoxide dismutase (SOD) and catalase (CAT) activities were determined in tissue samples.
Results:
A significant increase in lipid parameters was observed in hypothyroid group, whereas these parameters were decreased in hyperthyroid group compared to control group. For ox-LDL levels, a significant increase was observed both in hypothyroid and hyperthyroid groups. In brain, liver and kidney tissues, LPO and SA levels were increased, whereas GSH levels were decreased both in hypothyroid and hyperthyroid groups. The SOD and CAT activities were significantly decreased in hypothyroid group, however, they were increased in hyperthyroid group compared to control group. Both hypothyroid and hyperthyroid conditions modify the oxidant-antioxidant state in serum and tissues.
Conclusions:
Increased SOD and CAT activities in hyperthyroid group suggest that elevated thyroid hormones can reduce oxidative stress by maintaining antioxidant defense and they might have a protective effect on some tissues against oxidants.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This study was supported by Marmara University Scientific Research Projects Commission by the project no: SAG-C-DRP-060510-0122.
Employment or leadership: None declared.
Honorarium: None declared.
Competing interests: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Editorial
- Antidepressant and anxiolytic-like, sedation and hypnosis
- Behavior and Neuroprotection
- Neuropharmacological and neurochemical evaluation of N-n-propyl-3-ethoxyquinoxaline-2-carboxamide (6n): a novel serotonergic 5-HT3 receptor antagonist for co-morbid antidepressant- and anxiolytic-like potential using traumatic brain injury model in rats
- Neuropharmacological evaluation of a novel 5-HT3 receptor antagonist (4-benzylpiperazin-1-yl)(3-methoxyquinoxalin-2-yl) methanone (6g) on lipopolysaccharide-induced anxiety models in mice
- Effect of Salacia reticulata W. and Clitoria ternatea L. on the cognitive and behavioral changes in the streptozotocin-induced young diabetic rats
- In vivo sedative and hypnotic activities of methanol extract from the leaves of Jacquemontia paniculata (Burm.f.) Hallier f. in Swiss Albino mice
- Reproduction
- Bonny light crude oil-induced alteration in levels of testicular stress proteins is accompanied by apoptosis in rats after treatment withdrawal
- Cardiovascular-Pulmonary Interactions
- Meteorological parameters and pollutants on asthma exacerbation in Bangalore, India – an ecological retrospective time-series study
- Oxidative Stress
- Antioxidant and acetylcholinesterase inhibitory activities of leaf extract and fractions of Albizia adianthifolia (Schumach) W.F. Wright
- Oxidative stress, histopathological and electron microscopic alterations induced by dimethylnitrosamine in renal male mice and the protective effect of α-lipoic acid
- Effects of altered thyroid states on oxidative stress parameters in rats
- Metabolism
- The effects of smoking and nicotine ingestion on exercise heat tolerance
- Inflammation
- Investigation of antinociceptive activity of methanolic extract of Persicaria orientalis leaves in rodents
- Infection
- Antiplasmodial activity of the ethanolic root bark extract of Icacina senegalensis in mice infected by Plasmodium berghei
- Phytotherapy
- Evaluation of cytotoxic, analgesic, antidiarrheal and phytochemical properties of Hygrophila spinosa (T. Anders) whole plant
Artikel in diesem Heft
- Frontmatter
- Editorial
- Antidepressant and anxiolytic-like, sedation and hypnosis
- Behavior and Neuroprotection
- Neuropharmacological and neurochemical evaluation of N-n-propyl-3-ethoxyquinoxaline-2-carboxamide (6n): a novel serotonergic 5-HT3 receptor antagonist for co-morbid antidepressant- and anxiolytic-like potential using traumatic brain injury model in rats
- Neuropharmacological evaluation of a novel 5-HT3 receptor antagonist (4-benzylpiperazin-1-yl)(3-methoxyquinoxalin-2-yl) methanone (6g) on lipopolysaccharide-induced anxiety models in mice
- Effect of Salacia reticulata W. and Clitoria ternatea L. on the cognitive and behavioral changes in the streptozotocin-induced young diabetic rats
- In vivo sedative and hypnotic activities of methanol extract from the leaves of Jacquemontia paniculata (Burm.f.) Hallier f. in Swiss Albino mice
- Reproduction
- Bonny light crude oil-induced alteration in levels of testicular stress proteins is accompanied by apoptosis in rats after treatment withdrawal
- Cardiovascular-Pulmonary Interactions
- Meteorological parameters and pollutants on asthma exacerbation in Bangalore, India – an ecological retrospective time-series study
- Oxidative Stress
- Antioxidant and acetylcholinesterase inhibitory activities of leaf extract and fractions of Albizia adianthifolia (Schumach) W.F. Wright
- Oxidative stress, histopathological and electron microscopic alterations induced by dimethylnitrosamine in renal male mice and the protective effect of α-lipoic acid
- Effects of altered thyroid states on oxidative stress parameters in rats
- Metabolism
- The effects of smoking and nicotine ingestion on exercise heat tolerance
- Inflammation
- Investigation of antinociceptive activity of methanolic extract of Persicaria orientalis leaves in rodents
- Infection
- Antiplasmodial activity of the ethanolic root bark extract of Icacina senegalensis in mice infected by Plasmodium berghei
- Phytotherapy
- Evaluation of cytotoxic, analgesic, antidiarrheal and phytochemical properties of Hygrophila spinosa (T. Anders) whole plant