Pinealectomy inhibits antioxidant system in rats with hyperthyroidism
Yükleniyor...
Tarih
2005
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
MAGHIRA & MAAS PUBLICATIONS
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
OBJECTIVE: Thyroid hormones regulate energy metabolism and act on the mitochondria, which is an important source of free radicals in the cell. Reactive oxygen types play a significant role in physiological mechanisms, but in excessive amounts they can cause oxidative damage in molecules. The aim of the present study was to determine levels of lipid peroxidation caused by induced hyperthyroidism in cerebral, hepatic and cardiac tissues of pinealectomized rats. METHODS: Experimental animals used in the study were allocated to three groups as general control group, hyperthyroidism-sham pinealectomy group and hyperthyroidism-pinealectomy group. GSH and MDA levels in cerebral, hepatic and cardiac tissues were evaluated at the end of the 3-week study period. RESULTS: It was found that MDA levels in cerebral, hepatic and cardiac tissues were the highest in hyperthyroidism and pinealectomy group and that these values were higher in hyperthyroidism-sham pinealectomy group than in the control group (p < 0.001). it was seen that tissue GSH levels significantly increased in hyperthyroidism-sham pinealectomy group (p < 0.001) and that the increase in hyperthyroidism and pinealectomy group was higher than the increase in the control group only (p < 0.001). CONCLUSION: Results of our study show that MDA and GSH levels in cerebral, hepatic and cardiac tissues increased due to hyperthyroidism and that the increase in MDA levels became more evident and GSH levels were significantly suppressed after pinealectomy.
Açıklama
Anahtar Kelimeler
hyperthyroidism, pinealectomy, brain, liver, heart, rat
Kaynak
NEUROENDOCRINOLOGY LETTERS
WoS Q Değeri
Q4
Scopus Q Değeri
Q4
Cilt
26
Sayı
6
