The Effect of Trientine on AlCl3-Induced Cognitive Dysfunction and Biochemical Changes in the Hippocampus of Rats

Abstract

Cognitive impairments affect millions of people worldwide with an increasing prevalence. Research on their etiology and treatment is developing, nevertheless significant gaps remain. Trientine (TETA), as a copper chelator, has been shown to have beneficial effects in different human chronic diseases such as diabetic cardiomyopathy and neuropathy. Here, we examined the impact of TETA on AlCl3-induced neurocognitive dysfunctions and molecular changes in the hippocampus of rats.

Thirty-six male Wistar rats (weighing 200–250 g) were randomly divided into four groups including control, TETA (100 mg/kg/day), AlCl3 (100 mg/kg/day), and AlCl3 (100 mg/kg/day)+TETA (100 mg/kg/day), and received chemicals by gavage for 30 days. At the end of the treatment, the open field maze, elevated plus maze, novel object recognition memory test, and shuttle box test were done. Then after, brain-derived neurotrophic factor (BDNF), glycogen synthase kinase-3 β (GSK-3β), acetylcholinesterase activity, oxidative stress markers, and inflammatory mediators were measured in the hippocampus.

AlCl3 increased anxiety-like behaviors and impaired recognition and short-term memory. TETA was able to improve AlCl3-induced anxiety-like behaviors and short-term memory dysfunction. In the AlCl3-treated group, there was a significant increase in GSK-3β, oxidative stress, pro-inflammatory and pro-apoptotic markers, and decreased BDNF in the hippocampus. Co-administration of TETA was able to decrease lipid peroxidation, inflammation, GSK-3β, and acetylcholinesterase activity, and increase BDNF in the hippocampus compared with AlCl3-treated rats.

It can be concluded that TETA was able to improve neurobehavioral and neurocognitive functions by alleviating oxidative stress, inflammation, and pro-apoptotic pathways leading to the normalization of BDNF and GSK-3β.

Keywords

aluminum - Alzheimer - cognitive - inflammation - oxidative stress - triethylenetetramine

Publikationsverlauf

Eingereicht: 29. Januar 2024

Angenommen: 16. Juli 2024

Artikel online veröffentlicht:
22. August 2024

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