Inhibitory Effects of Walnut (Juglans regia) Peptides on Neuroinflammation and Oxidative Stress in Lipopolysaccharide-Induced Cognitive Impairment Mice

2020 ◽  
Vol 68 (8) ◽  
pp. 2381-2392 ◽  
Author(s):  
Shuguang Wang ◽  
Lin Zheng ◽  
Tiantian Zhao ◽  
Qi Zhang ◽  
Yang Liu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cognitive Impairment ◽  
Juglans Regia ◽  
Inhibitory Effects ◽  
And Oxidative Stress

scholarly journals Rapamycin attenuated zinc-induced tau phosphorylation and oxidative stress in animal model: Involvement of dual mTOR/p70S6K and Nrf2/HO-1 pathways

2021 ◽  
Author(s):  
Chencen Lai ◽  
Qian Chen ◽  
Yuanting Ding ◽  
Songbai Su ◽  
Heng Liu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cognitive Impairment ◽  
Morris Water Maze ◽  
Zinc Sulfate ◽  
Water Maze ◽  
Tau Phosphorylation ◽  
Alzheimers Disease ◽  
Tau Pathology ◽  
Biochemical Assays ◽  
And Oxidative Stress

Alzheimers disease is pathologically featured by abnormal accumulation of amyloid-beta plaque, neurofibrillary tangles, oxidative stress, neuroinflammation, and neurodegeneration. Metal dysregulation including excessive zinc released by presynaptic neurons plays an important role in tau pathology and oxidase activation. The activities of mammalian target of rapamycin (mTOR)/ ribosomal S6 protein kinase (p70S6K) are elevated in the brains of patients with Alzheimers disease. Zinc induces tau hyperphosphorylation via mTOR/P70S6K activation in vitro. However, the involvement of mTOR/P70S6K pathway in zinc-induced oxidative stress, tau degeneration, synaptic and cognitive impairment, has not been fully elucidated in vivo. Here we assessed in the effect of pathological concentration of zinc in SH-SY5Y cells by using biochemical assays and immunofluorescence staining. Rats (n = 18, male) were lateral ventricularly-injected with zinc and treated with rapamycin (intraperitoneal injection) for one week and assessed using Morris water maze. Evaluation of the oxidative stress, tau phorsphylation and synaptic impairment were performed using the hippocampus tissue of the rats by biochemical assays and immunofluorescence staining. Results from Morris water maze showed that the capacity of spatial memory is impaired in zinc-treated rats. Zinc sulfate significantly increased the levels of P-mTOR Ser2448, P-p70S6K Thr389, and P-tau Ser356, and decreased levels of Nrf2 and HO-1 in SH-SY5Y cells and in zinc-treated rats compared with control groups. Increased expressions of reactive oxygen species were observed in zinc sulfate-induced SH-SY5Y cells as well as in the hippocampus of zinc-injected rats. Rapamycin, an inhibitor of mTOR, rescued the zinc-induced increases in mTOR/p70S6K activations, tau phosphorylation and oxidative stress, as well as Nrf2/HO-1 inactivation, cognitive impairment and synaptic impairment reduced the expression of synapse-related proteins in zinc-injected rats. In conclusion, our findings imply that rapamycin prevents zinc-induced cognitive impairment and protects neurons from tau pathology, oxidative stress and synaptic impairment, by decreasing mTOR/p70S6K hyperactivity and increasing Nrf2/HO-1 activity.

Effect of black mulberry (Morus nigra) extract treatment on cognitive impairment and oxidative stress status ofd-galactose-induced aging mice

2015 ◽  
Vol 54 (6) ◽  
pp. 1052-1064 ◽  
Author(s):  
Nergiz Hacer Turgut ◽  
Derya Guliz Mert ◽  
Haki Kara ◽  
Hatice Reyhan Egilmez ◽  
Emre Arslanbas ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cognitive Impairment ◽  
Morus Nigra ◽  
Oxidative Stress Status ◽  
And Oxidative Stress

Dimethyl Fumarate Limits Neuroinflammation and Oxidative Stress and Improves Cognitive Impairment After Polymicrobial Sepsis

2018 ◽  
Vol 34 (3) ◽  
pp. 418-430 ◽  
Author(s):  
Graciela Freitas Zarbato ◽  
Mariana Pereira de Souza Goldim ◽  
Amanda Della Giustina ◽  
Lucinéia Gainski Danielski ◽  
Khiany Mathias ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cognitive Impairment ◽  
Dimethyl Fumarate ◽  
Polymicrobial Sepsis ◽  
And Oxidative Stress

Vitamin D3 attenuates lipopolysaccharide-induced cognitive impairment in rats by inhibiting inflammation and oxidative stress

Life Sciences ◽  
2020 ◽  
Vol 253 ◽  
pp. 117703 ◽  
Author(s):  
Amin Mokhtari-Zaer ◽  
Mahmoud Hosseini ◽  
Hossein Salmani ◽  
Zohreh Arab ◽  
Parvin Zareian
Keyword(s):  
Oxidative Stress ◽  
Cognitive Impairment ◽  
Vitamin D3 ◽  
And Oxidative Stress

scholarly journals Age-related cognitive impairment is associated with long-term neuroinflammation and oxidative stress in a mouse model of episodic systemic inflammation

2018 ◽  
Vol 15 (1) ◽  
Author(s):  
Joana Costa d’Avila ◽  
Luciana Domett Siqueira ◽  
Aurélien Mazeraud ◽  
Estefania Pereira Azevedo ◽  
Debora Foguel ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cognitive Impairment ◽  
Mouse Model ◽  
Systemic Inflammation ◽  
Age Related ◽  
And Oxidative Stress
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