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Tauroursodeoxycholic Acid (TUDCA) Regulates Inflammation and Hypoxia in Autonomic Tissues of Rats with Seizures       
Yazarlar
Arda Kaan Üner
Aslı Okan Oflamaz
Yozgat Bozok Üniversitesi, Türkiye
Enes Akyüz
Türkiye
Betül Köklü
Ece Eroğlu
Seher Yılmaz
Yozgat Bozok Üniversitesi, Türkiye
Dr. Öğr. Üyesi Demet ÜNALMIŞ AYKAR Dr. Öğr. Üyesi Demet ÜNALMIŞ AYKAR
Türkiye
Emin Kaymak
Türkiye
Feyza Şule Aslan
Muhammad Zahıd Qureshı
Özet
Inflammation and hypoxia have an effect on the molecular mechanism of cardiovascular and respiratory pathologies accompanying seizures. Against this, Tauroursodeoxycholic Acid (TUDCA) can regulate oxidative stress, inflammation and cellular survival by suppressing endoplasmic reticulum (ER) stress. We evaluated the expression changes of NF-κB p65, TNF-α, HIF1α and Kir6.2 proteins associated with seizures in brain stem, heart and lung tissues representing the autonomous network. Additionally, we examined the protective effects of TUDCA administration against damage caused by seizures in terms of immunohistochemistry and pathology. 4 groups of Wistar Albino male rats (250-300 g, n=32) were formed as control, pentylenetetrazole (PTZ), TUDCA and PTZ+TUDCA. The epilepsy kindling model was created by intraperitoneal (i.p.) injection of PTZ chemical (35 mg/kg, every 2 days) for one month. TUDCA (500 mg/kg; every 2 days) treatment was given intraperitoneally 30 minutes before seizures for 1 month. Brain stem, heart (atria, ventricle) and lung tissues of rats were isolated. NF-κB p65, TNF-α, HIF1α and Kir6.2 proteins in the obtained tissues were evaluated by immunohistochemical staining. The immunoreactivity of the investigated proteins in the brainstem heart and lung tissues of rats with chronic PTZ administration was significantly increased. Recurrent seizures led to accumulation of inflammatory cells in tissues, hemorrhage, vasodilation, and apoptosis. Following TUDCA administration, expression of NF-κB p65, TNF-α and Kir6.2 was significantly reduced in all tissues (except the atrium of the heart) compared to control rats. HIF-1α levels were significantly suppressed in ventricular and lung tissues of epileptic rats given TUDCA. However, TUDCA pretreatment improved histopathological changes due to chronic seizures and partially reduced apoptosis. We showed that epileptic seizures may cause tissue damage with the development of inflammatory and hypoxic conditions in the brainstem and organs that represent the autonomic network. TUDCA therapy could be an effective agent in the treatment of cardiac and respiratory problems associated with seizures.
Anahtar Kelimeler
HIF1α | Kir6.2 | NF-κB p65 | PTZ | TNF-α
Makale Türü Özgün Makale
Makale Alt Türü SCOPUS dergilerinde yayımlanan tam makale
Dergi Adı CMB Association
Dergi ISSN 0145-5680
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili Türkçe
Basım Tarihi 04-2023
Cilt No 68
Sayı 12
Sayfalar 104 / 111
Doi Numarası 10.14715/cmb/2022.68.12.19
Makale Linki http://dx.doi.org/10.14715/cmb/2022.68.12.19