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THE FUNCTION OF SIALIC ACID AS A RADICAL SCAVENGER IN EXPERIMENTAL HYPOTHYROIDISM WITH AND WITHOUT HYPERLIPIDEMIA

Year 2014, Volume: 7 Issue: 2, 75 - 79, 01.06.2014

Abstract

There is close relationship between hypothyroidism and oxidative stress. In hypothyroidism, lipid level, which is a potential target for oxidation, may be depressed by decreased free radical production. Our objective is to investigate the changes in sialic acid (SA) and oxidized-LDL (ox-LDL) levels in hypothyroid subjects with and without hyperlipidemia. Forty Wistar Albino rats were divided into 4 groups equally as follows: 1. Control group, 2. Hypothyroid group, 3. Hyperlipidemic group,and 4. Hyperlipidemic hypothyroid group. Thyroid and lipid parameters, ox-LDL and SA levels were determined in serum samples. Oxidized-LDL and SA were significantly higher in each group compared to the control group. Also hyperlipidemic hypothyroid group has increased lipid parameters, ox-LDL and SA levels compared to both hypothyroid and hyperlipidemic groups. Hypothyroidism accompanied by hyperlipidemia was observed to trigger the free radical oxidation. Changes in metabolic rate and increased lipid levels in serum may cause LDL oxidation, which in turn raises serum SA level. Serum SA level may be a marker of LDL oxidation.

Hiperlipidemili ve hiperlipidemisiz deneysel hipotiroidizmde bir radikal tutucu olarak siyalik asidin etkinliği

Year 2014, Volume: 7 Issue: 2, 75 - 79, 01.06.2014

Abstract

Hipotiroidizm ile oksidatif stress birbiriyle yakından ilgilidir. Hipotiroidizmde, oksidasyonun hedefi halindeki lipitlerin miktarındaki artış metabolizmanın baskılanması sebebiyle daha az radikal oluşumu beklenebilir. Amacımız hiperlipidemili ve hiperlipidemisiz hipotiroidili olguların ve kontrollerin siyalik asit ve oksitlenmiş LDL değişimlerini incelemektir. 40 adet Wistar Albino sıçan eşit olarak 4 gruba ayrıldı, gruplar: 1. Kontrol grubu, 2. Hipotiroid grubu, 3. Hiperlipidemik grup, 4. Hiperlipidemik hipotiroidi grubu. Alınan serum örneklerinde tiroid ve lipid parametreleri, okside LDL ve siyalik asit düzeylerine bakıldı. Kontrol grubuna kıyasla hem hipotiroidi ve hem hiperlipidemi gruplarında okside LDL ve siyalik asit seviyeleri artmıştır. Ayrıca, hiperlipidemik hipotiroidi grubunda, diğer gruplarla kıyaslandığında bu parametreler artmıştır. Hipotiroidiye eklenmiş hiperlipideminin, serbest radikal olusumunu tetiklediği gözlenmiştir. Metabolizma hızındaki değişiklik ve oksidasyonun hedefi olan serum lipid seviyelerindeki artış, LDL oksidasyonuna ve dolayısıyla serum siyalik asit seviyesinin artışına neden olabilir. Siyalik asit, LDL oksidasyonu icin bir belirteç olabilir.

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Details

Other ID JA34FC72NN
Journal Section Miscellaneous
Authors

Sehkar Oktay This is me

Lebriz Uslu This is me

Saime Batırel This is me

Nesrin Emekli This is me

Publication Date June 1, 2014
Submission Date June 1, 2014
Published in Issue Year 2014 Volume: 7 Issue: 2

Cite

Vancouver Oktay S, Uslu L, Batırel S, Emekli N. THE FUNCTION OF SIALIC ACID AS A RADICAL SCAVENGER IN EXPERIMENTAL HYPOTHYROIDISM WITH AND WITHOUT HYPERLIPIDEMIA. JSurgArts. 2014;7(2):75-9.

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