Retinal Levels of Amyloid Beta Correlate with Cerebral Levels of Amyloid Beta in Young APPswe/PS1dE9 Transgenic Mice before Onset of Alzheimer’s Disease
Objectives. Retina abnormalities are related to cognitive disorders in patients with Alzheimer’s disease (AD). Retinal amyloid beta (Aβ) can be labeled by curcumin. We measured Aβ content in the cerebrum and retina of APPswe/PS1dE9 (APP) transgenic mice with early age to investigate the correlation...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Behavioural Neurology |
| Online Access: | http://dx.doi.org/10.1155/2020/1574816 |
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| author | Xi Mei Mengxiang Yang Lina Zhu Qi Zhou Xingxing Li Zhongming Chen Chenjun Zou |
| author_facet | Xi Mei Mengxiang Yang Lina Zhu Qi Zhou Xingxing Li Zhongming Chen Chenjun Zou |
| author_sort | Xi Mei |
| collection | DOAJ |
| description | Objectives. Retina abnormalities are related to cognitive disorders in patients with Alzheimer’s disease (AD). Retinal amyloid beta (Aβ) can be labeled by curcumin. We measured Aβ content in the cerebrum and retina of APPswe/PS1dE9 (APP) transgenic mice with early age to investigate the correlation between cerebrum and retina. Methods. APP mice and age-matched wild-type mice were investigated every month from age 2 months to 6 months to assess changes in Aβ content in the retina and cerebrum. At the beginning of each month, mice were fed a curcumin diet (50 mg/kg/day) for 7 consecutive days. The Aβ levels in the retina and cerebrum were measured by ELISAs. Correlations were identified between retinal and cerebral Aβ contents using Pearson’s correlation. Results. In the absence of curcumin, there was a significant correlation between Aβ contents in the retina and cerebrum of APP mice (r=0.7291, P=0.0014). With increasing age, Aβ-mediated degenerative change in the cerebrum (P<0.001 in 5 months) and retina (P<0.01 in 5 months) increased significantly. The inhibitory effect of curcumin on the Aβ level was significant in the cerebrum (P<0.001) and retina (P<0.01) of older APP mice in the early stage of life. Conclusion. We observed a significant correlation between the Aβ content in the retina and Aβ content in the cerebrum of APP mice. Our data suggest an appropriate time to measure retinal Aβ. Although curcumin can label Aβ in the retina, it also suppresses Aβ levels and weakens the degree of correlation between Aβ in cerebrum and retina tissues. |
| format | Article |
| id | doaj-art-603789472b0b4497960eb08d2cd6726a |
| institution | Kabale University |
| issn | 0953-4180 1875-8584 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Behavioural Neurology |
| spelling | doaj-art-603789472b0b4497960eb08d2cd6726a2025-02-03T05:54:25ZengWileyBehavioural Neurology0953-41801875-85842020-01-01202010.1155/2020/15748161574816Retinal Levels of Amyloid Beta Correlate with Cerebral Levels of Amyloid Beta in Young APPswe/PS1dE9 Transgenic Mice before Onset of Alzheimer’s DiseaseXi Mei0Mengxiang Yang1Lina Zhu2Qi Zhou3Xingxing Li4Zhongming Chen5Chenjun Zou6Kangning Hospital of Ningbo, Ningbo City, Zhejiang Province, ChinaNingbo University, Ningbo City, Zhejiang Province, ChinaWeifang Medical University, Weifang City, Shandong Province, ChinaKangning Hospital of Ningbo, Ningbo City, Zhejiang Province, ChinaKangning Hospital of Ningbo, Ningbo City, Zhejiang Province, ChinaKangning Hospital of Ningbo, Ningbo City, Zhejiang Province, ChinaKangning Hospital of Ningbo, Ningbo City, Zhejiang Province, ChinaObjectives. Retina abnormalities are related to cognitive disorders in patients with Alzheimer’s disease (AD). Retinal amyloid beta (Aβ) can be labeled by curcumin. We measured Aβ content in the cerebrum and retina of APPswe/PS1dE9 (APP) transgenic mice with early age to investigate the correlation between cerebrum and retina. Methods. APP mice and age-matched wild-type mice were investigated every month from age 2 months to 6 months to assess changes in Aβ content in the retina and cerebrum. At the beginning of each month, mice were fed a curcumin diet (50 mg/kg/day) for 7 consecutive days. The Aβ levels in the retina and cerebrum were measured by ELISAs. Correlations were identified between retinal and cerebral Aβ contents using Pearson’s correlation. Results. In the absence of curcumin, there was a significant correlation between Aβ contents in the retina and cerebrum of APP mice (r=0.7291, P=0.0014). With increasing age, Aβ-mediated degenerative change in the cerebrum (P<0.001 in 5 months) and retina (P<0.01 in 5 months) increased significantly. The inhibitory effect of curcumin on the Aβ level was significant in the cerebrum (P<0.001) and retina (P<0.01) of older APP mice in the early stage of life. Conclusion. We observed a significant correlation between the Aβ content in the retina and Aβ content in the cerebrum of APP mice. Our data suggest an appropriate time to measure retinal Aβ. Although curcumin can label Aβ in the retina, it also suppresses Aβ levels and weakens the degree of correlation between Aβ in cerebrum and retina tissues.http://dx.doi.org/10.1155/2020/1574816 |
| spellingShingle | Xi Mei Mengxiang Yang Lina Zhu Qi Zhou Xingxing Li Zhongming Chen Chenjun Zou Retinal Levels of Amyloid Beta Correlate with Cerebral Levels of Amyloid Beta in Young APPswe/PS1dE9 Transgenic Mice before Onset of Alzheimer’s Disease Behavioural Neurology |
| title | Retinal Levels of Amyloid Beta Correlate with Cerebral Levels of Amyloid Beta in Young APPswe/PS1dE9 Transgenic Mice before Onset of Alzheimer’s Disease |
| title_full | Retinal Levels of Amyloid Beta Correlate with Cerebral Levels of Amyloid Beta in Young APPswe/PS1dE9 Transgenic Mice before Onset of Alzheimer’s Disease |
| title_fullStr | Retinal Levels of Amyloid Beta Correlate with Cerebral Levels of Amyloid Beta in Young APPswe/PS1dE9 Transgenic Mice before Onset of Alzheimer’s Disease |
| title_full_unstemmed | Retinal Levels of Amyloid Beta Correlate with Cerebral Levels of Amyloid Beta in Young APPswe/PS1dE9 Transgenic Mice before Onset of Alzheimer’s Disease |
| title_short | Retinal Levels of Amyloid Beta Correlate with Cerebral Levels of Amyloid Beta in Young APPswe/PS1dE9 Transgenic Mice before Onset of Alzheimer’s Disease |
| title_sort | retinal levels of amyloid beta correlate with cerebral levels of amyloid beta in young appswe ps1de9 transgenic mice before onset of alzheimer s disease |
| url | http://dx.doi.org/10.1155/2020/1574816 |
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