Hydrogen peroxide-induced oxidative stress, acetylcholinesterase inhibition, and mediated brain injury attenuated byThymus algeriensis
| Autor: | Fatma Guesmi, Ahmed Landoulsi, Houda Bellamine |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Male
0301 basic medicine Antioxidant Physiology Aché Endocrinology Diabetes and Metabolism medicine.medical_treatment medicine.disease_cause Antioxidants Rats Sprague-Dawley Thymus Plant 03 medical and health sciences chemistry.chemical_compound Physiology (medical) medicine Animals Hydrogen peroxide chemistry.chemical_classification Nutrition and Dietetics Plant Extracts Brain Hydrogen Peroxide General Medicine Malondialdehyde Acetylcholinesterase language.human_language Rats Oxidative Stress 030104 developmental biology Enzyme chemistry Biochemistry language Cholinesterase Inhibitors Oxidative stress |
| Zdroj: | Applied Physiology, Nutrition, and Metabolism. 43:1275-1281 |
| ISSN: | 1715-5320 1715-5312 |
| DOI: | 10.1139/apnm-2018-0107 |
| Popis: | The aim of the current study was to evaluate acetylcholinesterase (AChE) inhibition, antioxidant enzyme activities, and malondialdehyde (MDA) levels induced by hydrophobic fractions of Thymus algeriensis (HFTS) growing in Tunisia. The results showed that hydrogen peroxide (H2O2), an oxidative stress inducer, acts by decreasing the body mass and brain mass of rats. Moreover, we found higher MDA levels in the group treated with H2O2(P < 0.05) and a significantly lower activity of catalase, glutathione peroxidase, glutathione S-transferase, and superoxide dismutase, as well as a reduction in reduced glutathione activity in the brain tissues of H2O2-treated rats when compared with those of the control group (P < 0.05); however, rats that received HFTS with H2O2experienced a decrease in MDA levels in the brain. In contrast, HFTS demonstrated neuroprotective effects in rat brain. Overall, exposure to HFTS prior to H2O2induced a marked dose-dependent increase in reactive oxygen species scavenger levels (P < 0.05) accompanied by a statistically significant decrease in MDA levels (P < 0.05) when compared with no exposure. Notably, the activity of AChE was affected by exposure to natural compounds; levels were significantly lower in HFTS-treated rats and in those treated with the combination of HFTS and a low or high dose of H2O2. Furthermore, histopathological analysis showed that brain injuries occurred with high doses of H2O2administered alone or with a low dose of HFTS, whereas a high dose of essential oil markedly alleviated neurone degeneration. The results suggest that HFTS alleviates neuroinflammation by acting as an AChE inhibitor and attenuates H2O2-induced brain toxicity. |
| Databáze: | OpenAIRE |
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