Abstract
A chronic inflammatory response possibly mediated by Amyloid β (Aβ) is believed to be a major factor in the pathology of Alzheimer's disease (AD). Studies suggest that the mediators of the inflammatory response, which might contribute to brain damage, involve cytokines, such as IL-1β. IL-1β could play an important part in the development of pathologic conditions. There is also an endogenous interleukin-1 receptor antagonist (IL-1RA) in IL-1 family, which could prevent the actions of IL-1β by competing for receptor binding without inducing any signal transduction. Therefore, the balance of IL-1β vs IL-1RA is a critical parameter in determining not only whether excessive host inflammation will occur, but also the degree of subsequent host cell damage and associated toxicity. In our previous study, it has been determined that the anti-inflammatory action of Gossypium herbaceam L. extracts (GHE) was involved in its neuroprotection. However, the effects of GHE on IL-1β and IL-1RA have not been clearly defined in the experimental rat model of AD induced by Aβ. Therefore, the current study is performed to evaluate whether GHE could affect the disequilibrium of IL-1RA/IL-1β ratio in the hippocampus of rats after Aβ treatment. Subsequently, we further identify that GHE could efficaciously promote Akt and GSK3β phosphorylation, and thereby contribute to IL-1β release decrease as well as a concurrent increase in the level of IL-1RA through NF-κB and MAPK pathways. As a consequence, GHE is potentially beneficial to maintain the endogenous IL-1RA/ IL-1β balance in the hippocampus of rats and it might be a potential agent to ameliorate inflammatory process in AD.
Keywords: Alzheimer's disease, Amyloid β (Aβ), Gossypium herbaceam L., IL-1β; IL-1RA, JNK
Current Alzheimer Research
Title:Gossypium herbaceam L. Extracts Ameliorate Disequilibrium of IL- 1RA/IL-1β Ratio to Attenuate Inflammatory Process induced by Amyloid β in Rats
Volume: 9 Issue: 8
Author(s): Chao Ji, Cai Song, Haji Akber Aisa, Nan Yang, Yan-Yong Liu, Qing Li, Hai-Bo Zhu and Ping-Ping Zuo
Affiliation:
Keywords: Alzheimer's disease, Amyloid β (Aβ), Gossypium herbaceam L., IL-1β; IL-1RA, JNK
Abstract: A chronic inflammatory response possibly mediated by Amyloid β (Aβ) is believed to be a major factor in the pathology of Alzheimer's disease (AD). Studies suggest that the mediators of the inflammatory response, which might contribute to brain damage, involve cytokines, such as IL-1β. IL-1β could play an important part in the development of pathologic conditions. There is also an endogenous interleukin-1 receptor antagonist (IL-1RA) in IL-1 family, which could prevent the actions of IL-1β by competing for receptor binding without inducing any signal transduction. Therefore, the balance of IL-1β vs IL-1RA is a critical parameter in determining not only whether excessive host inflammation will occur, but also the degree of subsequent host cell damage and associated toxicity. In our previous study, it has been determined that the anti-inflammatory action of Gossypium herbaceam L. extracts (GHE) was involved in its neuroprotection. However, the effects of GHE on IL-1β and IL-1RA have not been clearly defined in the experimental rat model of AD induced by Aβ. Therefore, the current study is performed to evaluate whether GHE could affect the disequilibrium of IL-1RA/IL-1β ratio in the hippocampus of rats after Aβ treatment. Subsequently, we further identify that GHE could efficaciously promote Akt and GSK3β phosphorylation, and thereby contribute to IL-1β release decrease as well as a concurrent increase in the level of IL-1RA through NF-κB and MAPK pathways. As a consequence, GHE is potentially beneficial to maintain the endogenous IL-1RA/ IL-1β balance in the hippocampus of rats and it might be a potential agent to ameliorate inflammatory process in AD.
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Ji Chao, Song Cai, Akber Aisa Haji, Yang Nan, Liu Yan-Yong, Li Qing, Zhu Hai-Bo and Zuo Ping-Ping, Gossypium herbaceam L. Extracts Ameliorate Disequilibrium of IL- 1RA/IL-1β Ratio to Attenuate Inflammatory Process induced by Amyloid β in Rats, Current Alzheimer Research 2012; 9 (8) . https://dx.doi.org/10.2174/156720512803251093
DOI https://dx.doi.org/10.2174/156720512803251093 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |
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Aims and Scope: Introduction: Alzheimer's disease (AD) poses a significant global health challenge, with an increasing prevalence that demands concerted efforts to advance our understanding and strategies for prevention, diagnosis, treatment, and rehabilitation. This thematic issue aims to bring together cutting-edge research and innovative approaches from multidisciplinary perspectives to address ...read more
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Current updates on the Role of Neuroinflammation in Neurodegenerative Disorders
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