Protective effect of melatonin on blood-brain barrier damage caused by Endotoxemia
     
Yazarlar (4)
Dr. Öğr. Üyesi Kübra Tuğçe KALKAN Kırşehir Ahi Evran Üniversitesi, Türkiye
Mukaddes Eşrefoğlu Bezm-İ Âlem Vakıf Üniversitesi, Türkiye
Şule Terzioğlu Uşak Erfe Grp Co, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı NEUROLOGICAL RESEARCH (Q4)
Dergi ISSN 0161-6412 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 02-2024
Cilt / Sayı / Sayfa 46 / 2 / 195–206 DOI 10.1080/01616412.2023.2265244
Makale Linki http://dx.doi.org/10.1080/01616412.2023.2265244
Özet
ObjectiveEndotoxins, products of Gram-negative bacteria, are the primary cause of blood-brain barrier (BBB) damage. In the present study, we aimed to investigate the possible neuroprotection mechanisms of melatonin on BBB damage induced by endotoxemia.MethodsAdult, female Sprague-Dawley rats (n = 42) were separated into four random groups as a control group and three treatment groups. Lipopolysaccharide (7,5 mg/kg/day) was administrated for a single dose to generate a 24-hour sepsis model on rats. Melatonin (10 mg/kg/day) was treated a week before sepsis. Afterward, the dissected brain tissues were examined by histopathological, biochemical, and molecular analyses.ResultsLPS caused weight loss in the groups. As a result, degenerated neurons with cytoplasmic vacuoles and irregular pyknotic nuclei, pale stained necrotic neurons, and vascular congestion were observed in LPS-exposed rats. However, MEL decreased the number of degenerated neurons in treated groups. MEL treatment increased ZO1 and Occludin immunoreactivity while decreasing TLR4 in brain tissues. MEL effect on protein expression was recorded for ZO1 increase and TLR4 decrease in brain tissue compared to LPS groups. MEL also decreased MDA levels in brain tissue.ConclusionsMEL recovered the degenerative damage of sepsis by contributing to blood-brain barrier integrity, and by decreasing inflammation, thus the neuroprotective effects of MEL might provide an experimental basis for clinical applications.
Anahtar Kelimeler
Endotoxemia | lipopolysaccharide | melatonin | brain | rat