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Qian X, Hai W, Chen S, Zhang M, Jiang X, Tang H. Multi-omics data reveals aberrant gut microbiota-host glycerophospholipid metabolism in association with neuroinflammation in APP/PS1 mice. Gut Microbes 2023; 15:2282790. [PMID: 37992400 PMCID: PMC10730179 DOI: 10.1080/19490976.2023.2282790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 11/08/2023] [Indexed: 11/24/2023] Open
Abstract
Numerous studies have described the notable impact of gut microbiota on the brain in Alzheimer's disease (AD) via the gut - brain axis. However, the molecular mechanisms underlying the involvement of gut microbiota in the development of AD are limited. This study aimed to explore the potential mechanisms of gut microbiota in AD by integrating multi-omics data. In this study, APP/PS1 and WT mice at nine months of age were used as study mouse model. Cognitive function was assessed using the Morris water maze test. The levels of Aβ plaque and neuroinflammation in the brain were detected using immunofluorescence and PET/CT. In addition, we not only used 16S rRNA gene sequencing and metabolomics to explore the variation characteristics of gut microbiota and serum metabolism abundance, but also combined spatial metabolomics and transcriptomics to explore the change in the brain and identify their potential correlation. APP/PS1 mice showed significant cognitive impairment and amyloid-β deposits in the brain. The abundance of gut microbiota was significantly changed in APP/PS1 mice, including decreased Desulfoviobrio, Enterococcus, Turicibacter, and Ruminococcus and increased Pseudomonas. The integration of serum untargeted metabolomics and brain spatial metabolomics showed that glycerophospholipid metabolism was a common alteration pathway in APP/PS1 mice. Significant proliferation and activation of astrocyte and microglia were observed in APP/PS1 mice, accompanied by alterations in immune pathways. Integration analysis and fecal microbiota transplantation (FMT) intervention revealed potential association of gut microbiota, host glycerophospholipid metabolism, and neuroinflammation levels in APP/PS1 mice.
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Affiliation(s)
- Xiaohang Qian
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Medical Center on Aging of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wangxi Hai
- Department of Nuclear Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Siyue Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Miao Zhang
- Department of Nuclear Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xufeng Jiang
- Department of Nuclear Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huidong Tang
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Medical Center on Aging of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Gao C, Li B, He Y, Huang P, Du J, He G, Zhang P, Tang H, Chen S. Early changes of fecal short-chain fatty acid levels in patients with mild cognitive impairments. CNS Neurosci Ther 2023; 29:3657-3666. [PMID: 37144597 PMCID: PMC10580335 DOI: 10.1111/cns.14252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/21/2023] [Accepted: 04/24/2023] [Indexed: 05/06/2023] Open
Abstract
AIMS To compare the fecal levels of short-chain fatty acids (SCFAs) in patients with mild cognitive impairment (MCI) and normal controls (NCs) and to examine whether fecal SCFAs could be used as the biomarker for the identification of patients with MCI. To examine the relationship between fecal SCFAs and amyloid-β (Aβ) deposition in the brain. METHODS A cohort of 32 MCI patients, 23 Parkinson's disease (PD) patients, and 27 NC were recruited in our study. Fecal levels of SCFAs were measured using chromatography and mass spectrometry. Disease duration, ApoE genotype, body mass index, constipation, and diabetes were evaluated. To assess cognitive impairment, we used the Mini-Mental Status Examination (MMSE). To assess brain atrophy, the degree of medial temporal atrophy (MTA score, Grade 0-4) was measured by structural MRI. Aβ positron emission tomography with 18 F-florbetapir (FBP) was performed in seven MCI patients at the time of stool sampling and in 28 MCI patients at an average of 12.3 ± 0.4 months from the time of stool sampling to detect and quantify Aβ deposition in the brain. RESULTS Compared with NC, MCI patients had significantly lower fecal levels of acetic acid, butyric acid, and caproic acid. Among fecal SCFAs, acetic acid performed the best in discriminating MCI from NC, achieved an AUC of 0.752 (p = 0.001, 95% CI: 0.628-0.876), specificity of 66.7%, and sensitivity of 75%. By combining fecal levels of acetic acid, butyric acid, and caproic acid, the diagnostic specificity was significantly improved, reaching 88.9%. To better verify the diagnostic performance of SCFAs, we randomly assigned 60% of participants into training dataset and 40% into testing dataset. Only acetic acid showed significantly difference between these two groups in the training dataset. Based on the fecal levels of acetic acid, we achieved the ROC curve. Next, the ROC curve was evaluated in the independent test data and 61.5% (8 in 13) of patients with MCI, and 72.7% (8 in 11) of NC could be identified correctly. Subgroup analysis showed that reduced fecal SCFAs in MCI group were negatively associated with Aβ deposition in cognition-related brain regions. CONCLUSION Reductions in fecal SCFAs were observed in patients with MCI compared with NC. Reduced fecal SCFAs were negatively associated with Aβ deposition in cognition-related brain regions in MCI group. Our findings suggest that gut metabolite SCFAs have the potential to serve as early diagnostic biomarkers for distinguishing patients with MCI from NC and could serve as potential targets for preventing AD.
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Affiliation(s)
- Chao Gao
- Department of Neurology and Institute of Neurology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Binyin Li
- Department of Neurology and Institute of Neurology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Yixi He
- Department of Neurology and Institute of Neurology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Pai Huang
- Department of Neurology and Institute of Neurology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Juanjuan Du
- Department of Neurology and Institute of Neurology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Guiying He
- Department of Neurology and Institute of Neurology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Pingchen Zhang
- Department of Neurology and Institute of Neurology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
- Lab for Translational Research of Neurodegenerative Diseases, Shanghai Institute for Advanced Immunochemical Studies (SIAIS)Shanghai Tech UniversityShanghaiChina
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Qian XH, Liu XL, Zhang B, Lin Y, Xu JH, Ding GY, Tang HD. Investigating the causal association between branched-chain amino acids and Alzheimer's disease: A bidirectional Mendelian randomized study. Front Nutr 2023; 10:1103303. [PMID: 37063328 PMCID: PMC10102518 DOI: 10.3389/fnut.2023.1103303] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 03/06/2023] [Indexed: 04/03/2023] Open
Abstract
BackgroundThere are many metabolic pathway abnormalities in Alzheimer's disease (AD). Several studies have linked branched-chain amino acid (BCAA) metabolism disorders with AD but have not obtained consistent results. The purpose of this study is to explore the causal association between BCAA concentration and the risk of AD.MethodsA bidirectional Mendelian randomized (MR) study was applied to explore the causal effect between BCAA level and the risk of AD. Genetic instrumental variables from the genome-wide association study (GWAS) of serum BCAA levels [total BCAAs (115,047 participants), valine (115,048 participants), leucine (115,074 participants), and isoleucine (115,075 participants)] from the UK Biobank and AD (21,982 AD cases and 41,944 controls) from the International Genomics of Alzheimer's Project were applied to explore the causal effect through the inverse variance-weighted (IVW) method, MR-Egger, and weighted median, accompanied by multiple pluripotency and heterogeneity tests.ResultsThe forward MR analysis showed that there was no causal effect of total BCAAs (OR: 1.067, 95% CI: 0.838–1.358; p = 0.838), valine (OR: 1.106, 95% CI: 0.917–1.333; p = 0.292), leucine (OR: 1.096, 95% CI: 0.861–1.396; p = 0.659), and isoleucine (OR: 1.457, 95% CI: 1.024–2.742; p = 0.037) levels on the risk of AD. The reverse analysis showed that AD was related to reduced levels of total BCAAs (OR: 0.979, 95% CI: 0.989–0.990; p < 0.001), valine (OR: 0.977, 95% CI: 0.963–0.991; p = 0.001), leucine (OR: 0.983, 95% CI: 0.973–0.994; p = 0.002), and isoleucine (OR: 0.982, 95% CI: 0.971–0.992; p = 0.001).ConclusionWe provide robust evidence that AD was associated with a decreased level of BCAAs, which can serve as a marker for early diagnosis of AD.
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Affiliation(s)
- Xiao-hang Qian
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Medical Center on Aging of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-li Liu
- Department of Neurology, Shanghai University of Medicine and Health Sciences Affiliated Sixth People's Hospital South Campus, Shanghai, China
| | - Bin Zhang
- Department of Neurology, Shanghai University of Medicine and Health Sciences Affiliated Sixth People's Hospital South Campus, Shanghai, China
| | - Yuan Lin
- Department of Gastroenterology, Jiading District Central Hospital Affiliated Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Jian-hua Xu
- Department of Neurology, Jiading District Central Hospital Affiliated Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Gang-yu Ding
- Department of Neurology, Jiading District Central Hospital Affiliated Shanghai University of Medicine and Health Sciences, Shanghai, China
- *Correspondence: Gang-yu Ding
| | - Hui-dong Tang
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Medical Center on Aging of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Hui-dong Tang
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Xu Y, Hu X, Tang H, Hu Q, Wang S, Chen T, Zhang X, Jiang W, Wang L, Jiang W. Highly efficient silica coated perovskite nanocrystals with the assistance of ionic liquids for warm white LEDs. Nanoscale 2023; 15:631-643. [PMID: 36511857 DOI: 10.1039/d2nr05118d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Given the inherent characteristics of defect-tolerant, tunable emission performance, and high extinction coefficient, lead halide perovskite nanocrystals (NCs) have attracted widespread attention as a promising material in optoelectronic fields. However, their poor structural stability greatly impedes their practical applications. Herein, a novel strategy for synthesizing stable CsPbBr3@SiO2 NCs via the hydrolytic polycondensation of (3-aminopropyl)triethoxysilane (APTES) in the presence of ionic liquids (ILs) is deliberately designed. The problems of fluorescence quenching and undesirable agglomeration of NCs resulting from ligand loss and surface erosion existing in common encapsulation methods can be effectively resolved. The fast and controllable growth of the SiO2 shell around the CsPbBr3 NCs is realized owing to the high polarity and hygroscopicity of the IL. Moreover, the dual effects of the IL for passivating the surface defects and avoiding the structural degradation of NCs during the hydrolysis process of APTES are demonstrated. As a result, CsPbBr3@SiO2 NCs with a high photoluminescence quantum yield of 85.7% and excellent stability are realized. Furthermore, this method proves to be a versatile tool to obtain CsPbX3@SiO2 NCs with different halide compositions, realizing a broad tunable wavelength from 421.2 nm to 651.6 nm. A warm white LED with a high color rending index was assembled through packaging CsPbBr3@SiO2 NCs and Cu-In-Zn-S/ZnS/PVP composites on a commercial blue chip. These findings are expected to facilitate the development of perovskite NCs, which provides access to their optoelectronic applications.
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Affiliation(s)
- Yanqiao Xu
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333000, China.
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Xiaobo Hu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Huidong Tang
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Qing Hu
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Sanhai Wang
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Ting Chen
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333000, China.
| | - Xiaojun Zhang
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333000, China.
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Weihui Jiang
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333000, China.
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Lianjun Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Wan Jiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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Li B, Tang H, He G, Jin Z, He Y, Huang P, He N, Chen S. Tai Chi enhances cognitive training effects on delaying cognitive decline in mild cognitive impairment. Alzheimers Dement 2023; 19:136-149. [PMID: 35290704 DOI: 10.1002/alz.12658] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 02/18/2022] [Accepted: 02/23/2022] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Cognitive training and physical exercise have shown positive effects on delaying progression of mild cognitive impairment (MCI) to dementia. METHODS We explored the enhancing effect from Tai Chi when it was provided with cognitive training for MCI. In the first 12 months, the cognitive training group (CT) had cognitive training, and the mixed group (MixT) had additional Tai Chi training. In the second 12 months, training was only provided for a subgroup of MixT. RESULTS In the first 12 months, MixT and CT groups were benefited from training. Compared to the CT group, MixT had additional positive effects with reference to baseline. In addition, Compared to short-time training, prolonged mixed training further delayed decline in global cognition and memory. Functional magnetic resonance imaging showed more increased regional activity in both CT and MixT. DISCUSSION Tai Chi enhanced cognitive training effects in MCI. Moreover, Tai Chi and cognitive mixed training showed effects on delaying cognitive decline.
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Affiliation(s)
- Binyin Li
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guiying He
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhijia Jin
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yixi He
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Pei Huang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Naying He
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Zhao K, Ma Z, Yin L, Hui B, Si H, Tong X, Tang H, Cao P, Huang S. Site Preference and Defect Engineering of a Highly Efficient Blue-Emitting Phosphor Sr2SiO4:Ce3+/K+ Toward Thermally Enhanced Luminescence. Inorg Chem Front 2023. [DOI: 10.1039/d3qi00180f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Blue-emitting phosphor is one of the trichromatic phosphors essential for the development of near-ultraviolet (nUV) pumped phosphor-converted white light-emitting diodes (pc-WLEDs). Efficiency and thermal stability are two critical factors for...
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Xu Y, Hu X, Chen H, Tang H, Hu Q, Chen T, Jiang W, Wang L, Jiang W. In situ passivation of Pb 0 traps by fluoride acid-based ionic liquids enables enhanced emission and stability of CsPbBr 3 nanocrystals for efficient white light-emitting diodes. Nanoscale 2022; 14:13779-13789. [PMID: 36102672 DOI: 10.1039/d2nr03861g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A great hurdle restricting the optoelectronic applications of cesium lead halide perovskite (CsPbX3) nanocrystals (NCs) is due to the uncoordinated lead atoms (Pb0) on the surface, where most attempts to address the challenges in the literature depend on complicated post-treatment processes. Here we report a simple in situ surface engineering strategy to obtain highly fluorescent and stable perovskite NCs, wherein the introduction of the multifunctional additive 1-butyl-3-methyl-imidazolium tetrafluoroborate ([Bmim]BF4) can significantly eliminate the Pb0 traps. The photoluminescence quantum yield (PLQY) of the as-synthesized NCs was improved from 63.82% to 94.63% due to the good passivation of the surface defects. We also confirm the universality of this in situ passivation pathway to remove Pb0 deep traps by using fluoride acid-based ionic liquids (ILs). Due to the high hydrophobicity of the cations of ILs, the as-prepared CsPbBr3 NCs exhibit robust water resistance stability, maintaining 67.5% of the initial photoluminescence (PL) intensity after immersion in water for 21 days. A white light emitting diode (LED), assembled by mixing the as-synthesized CsPbBr3 NCs and red K2SiF6:Mn4+ phosphors onto a blue chip, exhibits high luminous efficiency (100.07 lm W-1) and wide color gamut (140.64% of the National Television System Committee (NTSC) standard). This work provides a promising and facile technique to eliminate the Pb0 traps and improve the optical performance and stability of halide perovskite NCs, facilitating their applications in optoelectronic fields.
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Affiliation(s)
- Yanqiao Xu
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, China
- School of Material Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333000, China
| | - Xiaobo Hu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Haijie Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Huidong Tang
- School of Material Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333000, China
| | - Qing Hu
- School of Material Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333000, China
| | - Ting Chen
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, China
| | - Weihui Jiang
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, China
- School of Material Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333000, China
| | - Lianjun Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Wan Jiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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Qian XH, Liu XL, Chen SD, Tang HD. Integrating peripheral blood and brain transcriptomics to identify immunological features associated with Alzheimer’s disease in mild cognitive impairment patients. Front Immunol 2022; 13:986346. [PMID: 36159817 PMCID: PMC9501700 DOI: 10.3389/fimmu.2022.986346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/15/2022] [Indexed: 11/24/2022] Open
Abstract
Background Immune system dysfunction has been proven to be an important pathological event in Alzheimer’s disease (AD). Mild cognitive impairment (MCI), as a transitional stage between normal cognitive function and AD, was an important research object for the screening of early diagnostic markers and therapeutic targets for AD. However, systematic assessment of peripheral immune system changes in MCI patients and consistent analysis with that in the CNS were still lacking. Methods Peripheral blood transcriptome data from the AddNeuroMed Cohort (n = 711) was used as a training dataset to assess the abundance of 24 immune cells through ImmuCellAI and to identify MCI-related immune signaling pathways and hub genes. The expression level of the immune hub gene was validated in peripheral blood (n = 587) and brain tissue (78 entorhinal cortex, 140 hippocampi, 91 temporal cortex, and 232 frontal cortex) validation datasets. Finally, reliable immune hub genes were applied for Gene Set Enrichment Analysis and correlation analysis of AD pathological characteristics. Results MCI patients have early changes in the abundance of various types of immune cells in peripheral blood, accompanied by significant changes in NF-kB, TNF, JAK-STAT, and MAPK signaling pathways. Five hub immune-related differentially expressed genes (NFKBIA, CD4, RELA, CASP3, and HSP90AA1) were screened by the cytoHubba plugin in Cytoscape and the least absolute shrinkage and selection operator (LASSO) regression. Their expression levels were significantly correlated with infiltration score and the abundance of monocytes, natural killer cells, Th2 T cells, T follicular helper cells, and cytotoxic T cells. After validation with independent datasets derived from peripheral blood and brain, RELA and HSP90AA1 were identified as two reliable immune hub genes in MCI patients and had consistent changes in AD. The Gene Set Enrichment Analysis (GSEA) showed that their expression levels were closely associated with Alzheimer’s disease, JAK-STAT, calcium signaling pathway, etc. In addition, the expression level of RELA was positively correlated with β- and γ-secretase activity and Braak stage. The expression level of HSP90AA1 was negatively correlated with α- and β-secretase activity. Conclusion Immune system dysfunction was an early event in AD. It provides a new target for the early diagnosis and treatment of AD.
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Affiliation(s)
- Xiao-hang Qian
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-li Liu
- Department of Neurology, Shanghai Fengxian District Central Hospital, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus, Shanghai, China
| | - Sheng-di Chen
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Sheng-di Chen, ; Hui-dong Tang,
| | - Hui-dong Tang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Medical Center on Aging of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Sheng-di Chen, ; Hui-dong Tang,
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Qian XH, Xie RY, Liu XL, Chen SD, Tang HD. Mechanisms of Short-Chain Fatty Acids Derived from Gut Microbiota in Alzheimer's Disease. Aging Dis 2022; 13:1252-1266. [PMID: 35855330 PMCID: PMC9286902 DOI: 10.14336/ad.2021.1215] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 12/15/2021] [Indexed: 12/11/2022] Open
Abstract
Short-chain fatty acids (SCFAs) are important metabolites derived from the gut microbiota through fermentation of dietary fiber. SCFAs participate a number of physiological and pathological processes in the human body, such as host metabolism, immune regulation, appetite regulation. Recent studies on gut-brain interaction have shown that SCFAs are important mediators of gut-brain interactions and are involved in the occurrence and development of many neurodegenerative diseases, including Alzheimer's disease. This review summarizes the current research on the potential roles and mechanisms of SCFAs in AD. First, we introduce the metabolic distribution, specific receptors and signaling pathways of SCFAs in human body. The concentration levels of SCFAs in AD patient/animal models are then summarized. In addition, we illustrate the effects and mechanisms of SCFAs on the cognitive level, pathological features (Aβ and tau) and neuroinflammation in AD. Finally, we analyze the translational value of SCFAs as potential therapeutic targets for the treatment of AD.
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Affiliation(s)
- Xiao-hang Qian
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
| | - Ru-yan Xie
- Shanghai Guangci Memorial hospital, Shanghai 200025, China.
| | - Xiao-li Liu
- Department of Neurology, Shanghai Fengxian District Central Hospital, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus, Shanghai 201406, China.
| | - Sheng-di Chen
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
- Correspondence should be addressed to: Dr. Sheng-di Chen () and Dr. Hui-dong Tang (), Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Hui-dong Tang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
- Correspondence should be addressed to: Dr. Sheng-di Chen () and Dr. Hui-dong Tang (), Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Wang P, Pan J, Luo Q, Chen J, Tang H, Chen S, Ma J. A 10-Year Community-Based Study of Leucine-Rich Repeat Kinase 2 G2385R Carriers' Conversion to Parkinson's Disease. Mov Disord 2022; 37:1767-1772. [PMID: 35733392 DOI: 10.1002/mds.29127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 04/20/2022] [Accepted: 05/30/2022] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND The G2385R variant of leucine-rich repeat kinase 2 (LRRK2) is mainly associated with Parkinson's disease(PD) in Asian populations. OBJECTIVE The aim of this study was to investigate the PD conversion rate and clinical characteristics of LRRK2 G2385R nonmanifesting carriers. METHODS All participants were from the community-based longitudinal cohort of Shanghai Ruijin Hospital. The G2385R carriers and noncarriers were screened by Sanger sequencing and received face-to-face interviews at baseline and follow-up assessments. The Kaplan-Meier method was used to compare the conversion rate of PD. Cox regression models were used to estimate the risk of G2385R variant for PD. RESULTS In the combined cohort, 26 (7.9%) people developed PD in 329 carriers versus 9 (2.6%) in 345 noncarriers (P = 0.0016). Cox regression model confirmed that the G2385R variant was a strong risk factor for PD in a Chinese population older than 50 years (hazard ratio, 3.314; 95% confidence interval, 1.551-7.078; P = 0.002). No difference was found in clinical symptoms between carriers and noncarriers. CONCLUSIONS We confirmed an increased conversion of PD in leucine-rich repeat kinase 2 G2385R carriers during a 10-year follow-up. © 2022 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Pei Wang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Pan
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qi Luo
- Department of Pediatric Hematology-Oncology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Chen
- Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianfang Ma
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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11
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Wang P, Cui P, Luo Q, Chen J, Tang H, Zhang L, Chen S, Ma J. Penetrance of Parkinson disease LRRK2 G2385R-associated variant in the Chinese population. Eur J Neurol 2022; 29:2639-2644. [PMID: 35608967 DOI: 10.1111/ene.15417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 05/02/2022] [Accepted: 05/19/2022] [Indexed: 01/05/2023]
Abstract
BACKGROUND AND PURPOSE Penetrance estimates of the leucine-rich repeat kinase 2 (LRRK2) variants for Parkinson disease (PD) vary widely. G2385R is one of the most common LRRK2 variants in Asian populations, and its penetrance is currently unknown. We aimed to estimate the penetrance of G2385R in the Chinese population. METHODS The G2385R variant was tested by Sanger sequencing in 6386 participants older than 50 years, all from the community cohort established by Shanghai Ruijin Hospital in 2009-2011. G2385R carriers and matched noncarriers underwent a brief questionnaire survey (including sex, current age, PD diagnosis, and age at onset) and face-to-face PD assessment during 2020-2021. The penetrance of PD was estimated by the Kaplan-Meier method. RESULTS A total of 396 G2385R carriers and 415 noncarriers were included, after excluding those with a baseline diagnosis of PD or unwilling to participate. In G2385R carriers, the penetrance of PD was 1.64% at 70 years, 10.26% at 80 years, and 18.49% at 90 years, and reached 25.90% at 95 years. The penetrance of PD in G2385R carriers was higher than in noncarriers (p = 0.0071). In noncarriers, only 0%, 3.72%, and 9.66% developed parkinsonism by 70, 80, and 90 years of age. Among carriers and noncarriers, there were no statistically significant differences in penetrance comparisons between males and females, or between urban and rural. CONCLUSIONS The lifetime penetrance of LRRK2 G2385R in the Chinese population was 25.9%. The penetrance modifier of G2385R in our study was age-related. Further investigation of genetic and environmental modifiers affecting G2385R penetrance is warranted.
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Affiliation(s)
- Pei Wang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peijing Cui
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qi Luo
- Department of Pediatric Hematology-Oncology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Chen
- Li Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lina Zhang
- Department of Biostatistics, Clinical Research Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianfang Ma
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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12
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Qian XH, Liu XL, Chen SD, Tang HD. Identification of Immune Hub Genes Associated With Braak Stages in Alzheimer’s Disease and Their Correlation of Immune Infiltration. Front Aging Neurosci 2022; 14:887168. [PMID: 35619939 PMCID: PMC9129065 DOI: 10.3389/fnagi.2022.887168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 03/31/2022] [Indexed: 11/13/2022] Open
Abstract
Background Alzheimer’s disease (AD) is the most common type of neurodegenerative disease. Tau pathology is one of the pathological features of AD, and its progression is closely related to the progress of AD. Immune system dysfunction is an important mediator of Tau pathological progression, but the specific molecular mechanism is still unclear. The purpose of this study is to determine the immune hub genes and peripheral immune cell infiltration associated with the Braak stages, and the molecular mechanisms between them. Methods In this study, 60 samples with different Braak stages in the GSE106241 dataset were used to screen Braak stages-related immune hub genes by using the WGCNA package in R and cytoHubba plugin. The temporal lobe expression data in the Alzdata database were used to verify the results. The correlation between the expression level of immune core genes and the pathological features of AD was analyzed to evaluate the abundance of peripheral immune cell infiltration and screened Braak stages-related cells. Finally, we used correlation analysis of immune hub genes and immune cells and Gene Set Enrichment Analysis (GSEA) of them. Results Seven genes (GRB2, HSP90AA1, HSPA4, IGF1, KRAS, PIK3R1, and PTPN11) were identified as immune core genes after the screening of the test datasets and validation of independent data. Among them, Kirsten rat sarcoma viral oncogene homolog (KRAS) and Phosphoinositide-3-Kinase Regulatory Subunit 1 (PIK3R1) were the most closely related to Tau and Aβ pathology in AD. In addition, the ImmuneScore increased gradually with the increase of Braak stages. Five types of immune cells (plasma cells, T follicular helper cells, M2 macrophage, activated NK cells, and eosinophils) were correlated with Braak stages. KRAS and PIK3R1 were the immune core genes most related to the abnormal infiltration of peripheral immune cells. They participated in the regulation of the pathological process of AD through axon guidance, long-term potentiation, cytokine–cytokine receptor interaction, RNA polymerase, etc. Conclusion The KRAS and PIK3R1 genes were identified as the immune hub genes most associated with Tau pathological progress in AD. The abnormal infiltration of peripheral immune cells mediated by these cells was involved in the Tau pathological process. This provides new insights for AD.
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Affiliation(s)
- Xiao-hang Qian
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-li Liu
- Department of Neurology, Shanghai Fengxian District Central Hospital, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus, Shanghai, China
| | - Sheng-di Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Sheng-di Chen,
| | - Hui-dong Tang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Hui-dong Tang,
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13
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Zhao K, Yin L, Ma Z, Yang T, Tang H, Cao P, Huang S. Investigation of the Solid-Solution Limit, Crystal Structure, and Thermal Quenching Mitigation of Sr-Substituted Rb 2CaP 2O 7:Eu 2+ Phosphors for White LED Applications. Inorg Chem 2022; 61:1627-1635. [PMID: 35001634 DOI: 10.1021/acs.inorgchem.1c03470] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rb2CaP2O7:Eu2+ is a bright reddish-orange-emitting phosphor, but its luminescence thermal stability is poor. In this study, we investigated the solid-solution limit and thermal quenching mitigation of Rb2CaP2O7:Eu2+ phosphors by cation substitution with Sr2+ and revisited their crystal structure. First, we carefully investigated the solid solution limit of Sr in the structure of Rb2CaP2O7. The results show that up to 80% of Ca can be substituted by Sr, whereas Ca hardly resides in the structure of Rb2SrP2O7. Consequently, the photoluminescence was fine-tuned from reddish-orange (612 nm) to yellow (580 nm) light emission by increasing the Sr2+ concentration in the solid-solution phosphors Rb2Sr1-xCaxP2O7:Eu2+ under excitation at 342 nm. The mechanism for the blue shift of the emission spectrum was discussed. With the associated modification of the local environment of the activator (as reflected by the changes in the effective coordination number, average bond length, distortion index, and quadratic elongation), the luminescence thermal quenching issue of Rb2CaP2O7:Eu2+ was mitigated by substituting 20% Sr into the Ca site (Rb2Ca0.8Sr0.2P2O7:Eu2+). The integrated intensity of bright orange-emitting Rb2Ca0.8Sr0.2P2O7:Eu2+ (603 nm) at 150 °C retained 53% of its initial value, 1.64 times that of Rb2CaP2O7:Eu2+ (32.3%). Such an enhancement could be attributed to the improved rigidity of the crystal structure due to the local structure modification as evidenced by Rietveld refinement. The cation substitution is an effective approach for mitigating the thermal quenching issue of phosphors.
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Affiliation(s)
- Kai Zhao
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Li Yin
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Zhihong Ma
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Tingxuan Yang
- Department of Chemical and Materials Engineering, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Huidong Tang
- Department of Chemistry and Materials Engineering, Changzhou Vocational Institute of Engineering, Changzhou 213164, P. R. China
| | - Peng Cao
- Department of Chemical and Materials Engineering, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.,MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand
| | - Saifang Huang
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China.,Department of Chemical and Materials Engineering, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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14
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Tang H, Zhang T, Li R, Chen Y, Li F. Luminescence enhancement of La4Ti9O24:Eu3+ red-emitting phosphors via cation-substitution of M (Ga, Nb, Ta, Zr, Al) ions. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Lan S, Hu Q, Zhao Q, Jiang W, Liu J, Feng G, Jiang F, Tang H, Chen J. Synthesis and characterization of Mn-doped C@ZrSiO4 black pigment via non-hydrolytic sol-gel method. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Qian X, Liu X, Zhu Z, Wang S, Song X, Chen G, Wu J, Cao Y, Luan X, Tang H, Cao L. Variants in LAMC3 Causes Occipital Cortical Malformation. Front Genet 2021; 12:616761. [PMID: 34354730 PMCID: PMC8329496 DOI: 10.3389/fgene.2021.616761] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 06/21/2021] [Indexed: 12/12/2022] Open
Abstract
Occipital cortical malformation (OCCM) is a disease caused by malformations of cortical development characterized by polymicrogyria and pachygyria of the occipital lobes and childhood-onset seizures. The recessive or complex heterozygous variants of the LAMC3 gene are identified as the cause of OCCM. In the present study, we identified novel complex heterozygous variants (c.470G > A and c.4030 + 1G > A) of the LAMC3 gene in a Chinese female with childhood-onset seizures. Cranial magnetic resonance imaging was normal. Functional experiments confirmed that both variant sites caused premature truncation of the laminin γ3 chain. Bioinformatics analysis predicted 10 genes interacted with LAMC3 with an interaction score of 0.4 (P value = 1.0e–16). The proteins encoded by these genes were mainly located in the basement membrane and extracellular matrix component. Furthermore, the biological processes and molecular functions from gene ontology analysis indicated that laminin γ3 chain and related proteins played an important role in structural support and cellular processes through protein-containing complex binding and signaling receptor binding. KEGG pathway enrichment predicted that the LAMC3 gene variant was most likely to participate in the occurrence and development of OCCM through extracellular matrix receptor interaction and PI3K-Akt signaling pathway.
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Affiliation(s)
- Xiaohang Qian
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoying Liu
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zeyu Zhu
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shige Wang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoxuan Song
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guang Chen
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jingying Wu
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuwen Cao
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xinghua Luan
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Cao
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Song X, Jiang J, Tian W, Zhan F, Zhu Z, Li B, Tang H, Cao L. A report of two cases of bulbospinal form Alexander disease and preliminary exploration of the disease. Mol Med Rep 2021; 24:572. [PMID: 34109421 PMCID: PMC8201446 DOI: 10.3892/mmr.2021.12211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 05/10/2021] [Indexed: 11/05/2022] Open
Abstract
Alexander disease (AxD) is a cerebral white matter disease affecting a wide range of ages, from infants to adults. In the present study, two cases of bulbospinal form AxD were reported, and a preliminary exploration of AxD was conducted thorough clinical, functional magnetic resonance imaging (fMRI) and functional analyses. In total, two de novo mutations in the glial fibrillary acidic protein (GFAP) gene (c.214G>A and c.1235C>T) were identified in unrelated patients (one in each patient). Both patients showed increased regional neural activity and functional connectivity in the cerebellum and posterior parietal cortex according to fMRI analysis. Notably, grey matter atrophy was discovered in the patient with c.214G>A variant. Functional experiments revealed aberrant accumulation of mutant GFAP and decreased solubility of c.1235C>T variant. Under pathological conditions, autophagic flux was activated for GFAP aggregate degradation. Moreover, transcriptional data of AxD and healthy human brain samples were obtained from the Gene Expression Omnibus database. Gene set enrichment analysis revealed an upregulation of immune‑related responses and downregulation of ion transport, synaptic transmission and neurotransmitter homeostasis. Enrichment analysis of cell‑specific differentially expressed genes also indicated a marked inflammatory environment in AxD. Overall, the clinical features of the two patients with bulbospinal form AxD were thoroughly described. To the best of our knowledge, the brain atrophy pattern and spontaneous brain functional network activity of patients with AxD were explored for the first time. Cytological experiments provided evidence of the pathogenicity of the identified variants. Furthermore, bioinformatics analysis found that inflammatory immune‑related reactions may play a critical role in AxD, which may be conducive to the understanding of this disease.
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Affiliation(s)
- Xiaoxuan Song
- Department of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Jingwen Jiang
- Department of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Wotu Tian
- Department of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Feixia Zhan
- Department of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Zeyu Zhu
- Department of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Binyin Li
- Department of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Huidong Tang
- Department of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Li Cao
- Department of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
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18
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Tang H, Xu Y, Hu X, Hu Q, Chen T, Jiang W, Wang L, Jiang W. Lead-Free Halide Double Perovskite Nanocrystals for Light-Emitting Applications: Strategies for Boosting Efficiency and Stability. Adv Sci (Weinh) 2021; 8:2004118. [PMID: 33854898 PMCID: PMC8025037 DOI: 10.1002/advs.202004118] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/12/2021] [Indexed: 05/09/2023]
Abstract
Lead-free halide double perovskite (HDP) nanocrystals are considered as one of the most promising alternatives to the lead halide perovskite nanocrystals due to their unique characteristics of nontoxicity, robust intrinsic thermodynamic stability, rich and tunable optoelectronic properties. Although lead-free HDP variants with highly efficient emission are synthesized and characterized, the photoluminescent (PL) properties of colloidal HDP nanocrystals still have enormous challenges for application in light-emitting diode (LED) devices due to their intrinsic and surface defects, indirect band, and disallowable optical transitions. Herein, recent progress on the synthetic strategies, ligands passivation, and metal doping/alloying for boosting efficiency and stability of HDP nanocrystals is comprehensive summarized. It begins by introducing the crystalline structure, electronic structure, and PL mechanism of lead-free HDPs. Next, the limiting factors on PL properties and origins of instability are analyzed, followed by highlighting the effects of synthesis strategies, ligands passivation, and metal doping/alloying on the PL properties and stability of the HDPs. Then, their preliminary applications for LED devices are emphasized. Finally, the challenges and prospects concerning the development of highly efficient and stable HDP nanocrystals-based LED devices in the future are proposed.
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Affiliation(s)
- Huidong Tang
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
| | - Yanqiao Xu
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
| | - Xiaobo Hu
- Engineering Research Center of Advanced Glasses Manufacturing TechnologyMinistry of EducationDonghua UniversityShanghai201620P. R. China
| | - Qing Hu
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
| | - Ting Chen
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
- National Engineering Research Center for Domestic and Building CeramicsJingdezhen333001P. R. China
| | - Weihui Jiang
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
- National Engineering Research Center for Domestic and Building CeramicsJingdezhen333001P. R. China
| | - Lianjun Wang
- Engineering Research Center of Advanced Glasses Manufacturing TechnologyMinistry of EducationDonghua UniversityShanghai201620P. R. China
- National Engineering Research Center for Domestic and Building CeramicsJingdezhen333001P. R. China
| | - Wan Jiang
- Engineering Research Center of Advanced Glasses Manufacturing TechnologyMinistry of EducationDonghua UniversityShanghai201620P. R. China
- National Engineering Research Center for Domestic and Building CeramicsJingdezhen333001P. R. China
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19
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Xiao S, Chan P, Wang T, Hong Z, Wang S, Kuang W, He J, Pan X, Zhou Y, Ji Y, Wang L, Cheng Y, Peng Y, Ye Q, Wang X, Wu Y, Qu Q, Chen S, Li S, Chen W, Xu J, Peng D, Zhao Z, Li Y, Zhang J, Du Y, Chen W, Fan D, Yan Y, Liu X, Zhang W, Luo B, Wu W, Shen L, Liu C, Mao P, Wang Q, Zhao Q, Guo Q, Zhou Y, Li Y, Jiang L, Ren W, Ouyang Y, Wang Y, Liu S, Jia J, Zhang N, Liu Z, He R, Feng T, Lu W, Tang H, Gao P, Zhang Y, Chen L, Wang L, Yin Y, Xu Q, Xiao J, Cong L, Cheng X, Zhang H, Gao D, Xia M, Lian T, Peng G, Zhang X, Jiao B, Hu H, Chen X, Guan Y, Cui R, Huang Q, Xin X, Chen H, Ding Y, Zhang J, Feng T, Cantillon M, Chen K, Cummings JL, Ding J, Geng M, Zhang Z. A 36-week multicenter, randomized, double-blind, placebo-controlled, parallel-group, phase 3 clinical trial of sodium oligomannate for mild-to-moderate Alzheimer's dementia. Alzheimers Res Ther 2021; 13:62. [PMID: 33731209 PMCID: PMC7967962 DOI: 10.1186/s13195-021-00795-7] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 02/22/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND New therapies are urgently needed for Alzheimer's disease (AD). Sodium oligomannate (GV-971) is a marine-derived oligosaccharide with a novel proposed mechanism of action. The first phase 3 clinical trial of GV-971 has been completed in China. METHODS We conducted a phase 3, double-blind, placebo-controlled trial in participants with mild-to-moderate AD to assess GV-971 efficacy and safety. Participants were randomized to placebo or GV-971 (900 mg) for 36 weeks. The primary outcome was the drug-placebo difference in change from baseline on the 12-item cognitive subscale of the Alzheimer's Disease Assessment Scale (ADAS-cog12). Secondary endpoints were drug-placebo differences on the Clinician's Interview-Based Impression of Change with caregiver input (CIBIC+), Alzheimer's Disease Cooperative Study-Activities of Daily Living (ADCS-ADL) scale, and Neuropsychiatric Inventory (NPI). Safety and tolerability were monitored. RESULTS A total of 818 participants were randomized: 408 to GV-971 and 410 to placebo. A significant drug-placebo difference on the ADAS-Cog12 favoring GV-971 was present at each measurement time point, measurable at the week 4 visit and continuing throughout the trial. The difference between the groups in change from baseline was - 2.15 points (95% confidence interval, - 3.07 to - 1.23; p < 0.0001; effect size 0.531) after 36 weeks of treatment. Treatment-emergent adverse event incidence was comparable between active treatment and placebo (73.9%, 75.4%). Two deaths determined to be unrelated to drug effects occurred in the GV-971 group. CONCLUSIONS GV-971 demonstrated significant efficacy in improving cognition with sustained improvement across all observation periods of a 36-week trial. GV-971 was safe and well-tolerated. TRIAL REGISTRATION ClinicalTrials.gov, NCT0229391 5. Registered on November 19, 2014.
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Affiliation(s)
- Shifu Xiao
- Department of Geriatric Psychiatry, Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai, China. .,Alzheimer's Disease and Related Disorders Center, Shanghai Jiaotong University, 600 South Wan Ping Road, Shanghai, 200030, China.
| | - Piu Chan
- Xuanwu Hospital Capital Medical University, Beijing, China
| | - Tao Wang
- Department of Geriatric Psychiatry, Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Alzheimer's Disease and Related Disorders Center, Shanghai Jiaotong University, 600 South Wan Ping Road, Shanghai, 200030, China
| | - Zhen Hong
- Huashan Hospital, Fudan University, Shanghai, China
| | - Shuzhen Wang
- Qilu Hospital of Shandong University, Ji'nan, China
| | - Weihong Kuang
- West China Hospital of Sichuan University, Chengdu, China
| | - Jincai He
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaoping Pan
- Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yuying Zhou
- Tianjin Huanhu Hospital, Huanhu Hospital Affiliated to Nankai University, Tianjin, China
| | - Yong Ji
- Tianjin Huanhu Hospital, Huanhu Hospital Affiliated to Nankai University, Tianjin, China
| | - Luning Wang
- Department of Geriatric Neurology of PLA General Hospital, Beijing, China
| | - Yan Cheng
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China
| | - Ying Peng
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Qinyong Ye
- Fujian Medical University Union Hospital, Fuzhou, China
| | - Xiaoping Wang
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuncheng Wu
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiumin Qu
- Department of Neurology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shengdi Chen
- Department of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | | | - Wei Chen
- Department of Psychiatry, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine and Key Laboratory of Medical Neurobiology of Zhejiang Province, Hangzhou, China
| | - Jun Xu
- Northern Jiangsu People's Hospital, Yangzhou, China
| | - Dantao Peng
- Department of Neurology, China-Japan Friendship Hospital, Beijing, China
| | | | - Yansheng Li
- Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Junjian Zhang
- Department of Neurology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yifeng Du
- Shandong Provinical Hospital affiliated to Shandong University, Ji'nan, China
| | - Weixian Chen
- Jiangsu Province People's Hospital, Nanjing, China
| | | | - Yong Yan
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaowei Liu
- Department of Geriatric psychiatry, Wuxi Mental Health Center, Wuxi, China
| | - Wei Zhang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Benyan Luo
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wenyuan Wu
- Tongji Hospital of Tongji University, Shanghai, China
| | - Lu Shen
- Xiangya Hospital Central South University, Changsha, China
| | - Chunfeng Liu
- The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Peixian Mao
- Beijing An Ding Hospital, Capital Medical University, Beijing, China
| | - Qiumei Wang
- Peking Union Medical College Hospital, No. 1 Shuaifuyuan, Beijing, 100730, China
| | - Qianhua Zhao
- Huashan Hospital, Fudan University, Shanghai, China
| | - Qihao Guo
- Huashan Hospital, Fudan University, Shanghai, China
| | - Yongtao Zhou
- Xuanwu Hospital Capital Medical University, Beijing, China
| | - Yi Li
- Qilu Hospital of Shandong University, Ji'nan, China
| | - Lijun Jiang
- West China Hospital of Sichuan University, Chengdu, China
| | - Wenwei Ren
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yingjun Ouyang
- Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yan Wang
- Tianjin Huanhu Hospital, Huanhu Hospital Affiliated to Nankai University, Tianjin, China
| | - Shuai Liu
- Tianjin Huanhu Hospital, Huanhu Hospital Affiliated to Nankai University, Tianjin, China
| | - Jianjun Jia
- Department of Geriatric Neurology of PLA General Hospital, Beijing, China
| | - Nan Zhang
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhonglin Liu
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Raoli He
- Fujian Medical University Union Hospital, Fuzhou, China
| | - Tingyi Feng
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenhui Lu
- Department of Neurology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Huidong Tang
- Department of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ping Gao
- Beijing Hospital, Beijing, China
| | - Yingchun Zhang
- Department of Psychiatry, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine and Key Laboratory of Medical Neurobiology of Zhejiang Province, Hangzhou, China
| | - Lanlan Chen
- Northern Jiangsu People's Hospital, Yangzhou, China
| | - Lei Wang
- Department of Neurology, China-Japan Friendship Hospital, Beijing, China
| | - You Yin
- Shanghai Changzheng Hospital, Shanghai, China
| | - Qun Xu
- Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jinsong Xiao
- Department of Neurology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Lin Cong
- Shandong Provinical Hospital affiliated to Shandong University, Ji'nan, China
| | - Xi Cheng
- Jiangsu Province People's Hospital, Nanjing, China
| | - Hui Zhang
- Peking University Third Hospital, Beijing, China
| | - Dan Gao
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Minghua Xia
- Department of Geriatric psychiatry, Wuxi Mental Health Center, Wuxi, China
| | - Tenghong Lian
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Guoping Peng
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xu Zhang
- Tongji Hospital of Tongji University, Shanghai, China
| | - Bin Jiao
- Xiangya Hospital Central South University, Changsha, China
| | - Hua Hu
- The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xueyan Chen
- Beijing An Ding Hospital, Capital Medical University, Beijing, China
| | - Yihui Guan
- Huashan Hospital, Fudan University, Shanghai, China
| | - Ruixue Cui
- Peking Union Medical College Hospital, No. 1 Shuaifuyuan, Beijing, 100730, China
| | - Qiu Huang
- Med-X Research Institution, Shanghai Jiao Tong University, Shanghai, China
| | - Xianliang Xin
- Shanghai Green Valley Pharmaceutical Co. Ltd., No. 421, Niudun Road, Shanghai, China
| | - Hongjian Chen
- Shanghai Green Valley Pharmaceutical Co. Ltd., No. 421, Niudun Road, Shanghai, China
| | - Yu Ding
- Shanghai Green Valley Pharmaceutical Co. Ltd., No. 421, Niudun Road, Shanghai, China
| | - Jing Zhang
- Shanghai Green Valley Pharmaceutical Co. Ltd., No. 421, Niudun Road, Shanghai, China
| | - Teng Feng
- Shanghai Green Valley Pharmaceutical Co. Ltd., No. 421, Niudun Road, Shanghai, China
| | - Marc Cantillon
- Shanghai Green Valley Pharmaceutical Co. Ltd., No. 421, Niudun Road, Shanghai, China
| | - Kewei Chen
- Banner Alzheimer's Institute, Phoenix, AZ, USA
| | - Jeffrey L Cummings
- Chamberrs-Grundy Center for Transformative Neuroscience, Department of Brain Health, School of Integrated Health Sciences, University of Nevada, Las Vegas, USA
| | - Jian Ding
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu chong zhi Road, Nevada, China
| | - Meiyu Geng
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu chong zhi Road, Nevada, China.
| | - Zhenxin Zhang
- Peking Union Medical College Hospital, No. 1 Shuaifuyuan, Beijing, 100730, China.
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Luo Q, Tang H, Xu X, Huang J, Wang P, He G, Song X, Huang Y, Chen S, Yan F, Tan Y, Ma J. The Prevalence and Risk Factors of Cerebral Microbleeds: A Community-Based Study in China. Ther Clin Risk Manag 2021; 17:165-171. [PMID: 33658788 PMCID: PMC7917356 DOI: 10.2147/tcrm.s297708] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/02/2021] [Indexed: 11/23/2022] Open
Abstract
Introduction Cerebral microbleeds (CMBs) are frequently found in the healthy elderly. However, data on the prevalence and risk factors of CMBs in the general population of China are lacking. Methods A cross-sectional study focusing on the prevalence and risk factors of CMBs was conducted in stroke-free elderly from Shanghai Wuliqiao community. MRI was performed at 3Tesla and cardiovascular risk factors (eg, age, smoking history, and hypertension), cerebral small vessel disease (CSVD) markers (eg, white matter hyperintensities, lacunar infarction, and enlarged perivascular space) and genetic information (eg, APOE, CR1) were recorded. Poisson regression was used to analyze the risk factors of the presence and location of microbleeds. Results A total of 199 participants (70.8±7.2 years old; male 31.2%) were finally included in our analysis. The overall prevalence of CMBs was 12.6% (25/199) and increased with age from 7.5% (55-64 years old) to 19.3% (over 75 years old). Of those with CMBs, most of them (16/25) located in the deep/mixed region and had 1-2 CMBs (18/25). Poisson regression analysis showed that white matter hyperintensities (OR=1.22, 95% CI: 1.16-1.29), APOE ε4+ carrier (OR=2.16, 95% CI: 1.18-3.96) and CR1 non-F/F isoform (OR=7.78, 95% CI: 4.34-13.96) were associated with CMBs. Further analysis found that in addition to the above three risk factors, hypertension (OR=2.98, 95% CI: 1.16-7.64), lacunar infarction (OR=2.39, 95% CI: 1.19-4.81) also increased the risk of deep/mixed CMBs. Conclusion The prevalence of cerebral microbleeds is similar to other countries. Cardiovascular risk factors, CSVD markers, and genetic factors (APOE ε4, CR1 non-F/F isoform) were associated with CMBs, suggesting an interaction of multiple pathogenesis in Chinese stroke-free community population.
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Affiliation(s)
- Qi Luo
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Huidong Tang
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xinxin Xu
- Department of Radiology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Juan Huang
- Department of Radiology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Pei Wang
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Guiying He
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xiaoxuan Song
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yumeng Huang
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Shengdi Chen
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Fuhua Yan
- Department of Radiology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yuyan Tan
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Jianfang Ma
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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Huang Y, Jianfang M, Morales R, Tang H. Corticobasal manifestations of Creutzfeldt-Jakob disease with D178N-homozygous 129M genotype. Prion 2020; 14:232-237. [PMID: 32946318 PMCID: PMC7518738 DOI: 10.1080/19336896.2020.1812367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Creutzfeldt-Jakob disease (CJD) is a prion disease, usually presented with memory loss, ataxia, dementia, myoclonus, involuntary movements and psychiatric problems. D178N-homozygous 129M genotype has been recognized in the diagnosis of fatal familial insomnia (FFI) globally. Here we report a patient presented with progressive left upper limb stiffness, bradykinesia, hypomimia and weight loss (10 kg) initially. She progressed to dementia, dysphasia, dysphonia and be bedridden quickly but did not present insomnia. She was diagnosed with CJD corticobasal subtype carrying a classic D178N-129M mutation of PRNP in FFI. Remarkably, she has a strong family history of neurological degeneration diseases but the other members of this pedigree who do not carry D178N-homozygous 129M mutation in PRNP do not present any CJD or FFI symptoms. We conclude that this patient carrying D178N-homozygous 129M mutation in PRNP should be diagnosed as CJD. Thus, the clinicopathology should be considered as a crucial evidence in diagnosing some cases, but FFI could be evaluated as a differential diagnosis with a unique clinical profile. List of abbreviations AD: Alzheimer disease; ADL: Activities of Daily Living; CBD Cortical basal degeneration; CBS: Corticobasal syndrome; CJD: Creutzfeldt-Jakob disease; DWI: Diffusion-weighted image; EEG: Electroencephalograph, fCJD: familial Creutzfeld-Jakob disease; FFI: Fatal familial insomnia; FLAIR: Fluid-attenuated inversion recovery; MMSE: Mini-mental state examination; MoCA: Montreal Cognitive Assessment; MRI: Magnetic resonance imaging; PD: Parkinson disease; PrP: Prion protein; PSWC: Periodic sharp wave complexes; SWI: Susceptibility-weighted imaging
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Affiliation(s)
- Yumeng Huang
- Department of Neurology, Shanghai Jiao Tong University Medical School Affiliated Ruijin Hospital , Shanghai, China
| | - Ma Jianfang
- Department of Neurology, Shanghai Jiao Tong University Medical School Affiliated Ruijin Hospital , Shanghai, China
| | - Rodrigo Morales
- Department of Neurology, McGovern Medical School, the University of Texas Health Science Center at Houston , Houston, TX, USA.,Centro Integrativo de Biologia y Quimica Aplicada (CIBQA). Universidad Bernardo OHiggins , Santiago, Chile
| | - Huidong Tang
- Department of Neurology, Shanghai Jiao Tong University Medical School Affiliated Ruijin Hospital , Shanghai, China
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Abstract
Ethanol-responsive movement disorders are a group of movement disorders of which clinical manifestation could receive significant improvement after ethanol intake, including essential tremor, myoclonus-dystonia, and some other hyperkinesia. Emerging evidence supports that the sensitivity of these conditions to ethanol might be attributed to similar anatomical targets and pathophysiologic mechanisms. Cerebellum and cerebellum-related networks play a critical role in these diseases. Suppression of inhibitory neurotransmission and hyper-excitability of these regions are the key points for pathogenesis. GABA pathways, the main inhibitory system involved in these regions, were firstly linked to the pathogenesis of these diseases, and GABAA receptors and GABAB receptors play critical roles in ethanol responsiveness. Moreover, impairment of low-voltage-activated calcium channels, which were considered as a contributor to oscillation activity of the nervous system, also participates in the sensitivity of ethanol in relevant disease. Glutamate transporters and receptors that are closely associated with GABA pathways are the action sites for ethanol as well. Accordingly, alternative medicines aiming at these shared mechanisms appeared subsequently to mimic ethanol-like effects with less liability, and some of them have achieved positive effects on different diseases with well-tolerance. However, more clinical trials with a large sample and long-term follow-ups are needed for pragmatic use of these medicines, and further investigations on mechanisms will continue to deepen the understanding of these diseases and also accelerate the discovery of ideal treatment.
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Affiliation(s)
- Jingying Wu
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Cao
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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23
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Zhu Z, Zhang C, Zhao G, Liu Q, Zhong P, Zhang M, Tang W, Zhan F, Tian W, Wang Y, Yin K, Huang X, Jiang J, Liu X, Liu S, Zhou H, Luan X, Tang H, Wang Y, Chen S, Cao L. Novel mutations in the SPAST gene cause hereditary spastic paraplegia. Parkinsonism Relat Disord 2019; 69:125-133. [PMID: 31751864 DOI: 10.1016/j.parkreldis.2019.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 10/05/2019] [Accepted: 11/05/2019] [Indexed: 01/14/2023]
Abstract
BACKGROUND Mutations in the SPAST gene are the most frequent cause of hereditary spastic paraplegia (HSP). We aim to extend the mutation spectrum of spastic paraplegia 4 (SPG4) and carried out experiment in vitro to explore the influence of the SPAST gene mutation on the function of corresponding protein. METHODS Whole-exome sequencing (WES) combined with multiplex ligation-dependent probe amplification (MLPA) were performed in a cohort of 150 patients clinically diagnosed with HSP. We focus on screening for mutations in SPAST gene and carrying out functional experiments to assess the effects of the novel variants. RESULTS A total of 34 different mutations in the SPAST gene were identified, of which 10 were novel, including 1 missense (c.1479T > A), 1 nonsense (c.766G > T), 3 splicing (c.1413 + 1_1413+4delGTAA, c.1729-1G > A and c.1536+2T > G) and 5 frameshift mutations (c.1094delC, c.885dupA, c.517_518delAG, c.280delG and c.908dupC). For 7 novel non-splicing mutations, functional study showed that accumulated M1 spastin colcocalized with microtubules which was different from a uniformly diffused M87 spastin. While an impairment in severing activity was observed in both mutant M1 and mutant M87, except for c.280delG. All 3 novel splicing variants w ere predicted to affect splicing by using bioinformatic programs. However, only c.1536+2T > G had no influence on splice site in vitro, which conflicts with the in-silico analysis. CONCLUSION We genetically diagnosed 40 SPG4 patients. All the novel non-splicing mutations except for c.280delG were certified to exert an effect on the microtubule-severing and all the novel splicing mutations other than c.1536+2T > G would cause abnormal splicing of the spastin.
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Affiliation(s)
- Zeyu Zhu
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Chao Zhang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Neurology, Suzhou Hospital Affiliated to Anhui Medical University, Suzhou, China.
| | - Guohua Zhao
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China.
| | - Qing Liu
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
| | - Ping Zhong
- Department of Neurology, Suzhou Hospital Affiliated to Anhui Medical University, Suzhou, China.
| | - Mei Zhang
- Department of Neurology, Huainan First People's Hospital Affiliated to Bengbu Medical College, Huainan, Anhui Province, China.
| | - Weiguo Tang
- Department of Neurology, Zhoushan Hospital, Zhoushan, Zhejiang Province, China.
| | - Feixia Zhan
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Wotu Tian
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Yan Wang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Neurology, Huainan First People's Hospital Affiliated to Bengbu Medical College, Huainan, Anhui Province, China.
| | - Kaili Yin
- McKusick-Zhang Center for Genetic Medicine and State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Beijing, China.
| | - Xiaojun Huang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Jingwen Jiang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Xiaoli Liu
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Neurology, Shanghai Fengxian District Central Hospital, Shanghai Jiao Tong University Affiliated Sixth People's Hospital South Campus, Shangha, China.
| | - Shihua Liu
- Department of Neurology, Suzhou Hospital Affiliated to Anhui Medical University, Suzhou, China.
| | - Haiyan Zhou
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Xinghua Luan
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Ying Wang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Li Cao
- Department of Neurology and Institute of Neurology, Rui Jin Hospital & Rui Jin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Li B, He Y, Ma J, Huang P, Du J, Cao L, Wang Y, Xiao Q, Tang H, Chen S. Mild cognitive impairment has similar alterations as Alzheimer's disease in gut microbiota. Alzheimers Dement 2019; 15:1357-1366. [PMID: 31434623 DOI: 10.1016/j.jalz.2019.07.002] [Citation(s) in RCA: 233] [Impact Index Per Article: 46.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 04/03/2019] [Accepted: 07/01/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Gut microbiota changes before the onset of Alzheimer's disease (AD) and the alterations could be detected in the stage of mild cognitive impairment (MCI). The findings might offer diagnostic biomarkers before the onset of dementia. BACKGROUND AD is the most common cause of dementia, and MCI is the predementia state. Recent studies suggest the alterations in the gut microbial communities associated with AD, whereas the microbiota in MCI before the onset of dementia has not been discovered and characterized in humans. NEW/UPDATED HYPOTHESIS We hypothesize that the dysbiosis happens in the MCI stage. Patients with AD and MCI have decreased microbial diversity, and changes in gut microbiota could be detected for early detection of AD. In our preliminary study, we identified differences between AD and normal controls in 11 genera from the feces and 11 genera from the blood. No difference in genera between AD and MCI was detected. Using the diagnostic model from fecal samples with all different genera input, 93% (28 in 30) of patients with MCI could be identified correctly. MAJOR CHALLENGES FOR THE HYPOTHESIS The diagnosis of MCI and AD in the study was based on symptoms and neuroimaging, and AD biomarkers should be included for precise diagnosis in further validating studies. Besides, as the microbiota changes longitudinally, their relationship with the progress of dementia needs to be studied in the prospective studies. LINKAGE TO OTHER MAJOR THEORIES Escherichia was observed increased at genus level in both fecal and blood samples from AD and MCI. For AD biomarker, postmortem brain tissue from patients with AD showed lipopolysaccharides and gram-negative Escherichia coli fragments colocalize with amyloid plaque. In this way, the amyloid pathogenesis for AD would be triggered during MCI by gut microbiota shifting. Besides, systemic inflammatory reactions caused by compounds secreted by bacteria may impair the blood-brain barrier and promote neuroinflammation and/or neurodegeneration. Furthermore, abnormal metabolites caused by microbial gene functions have an impact on neurodegeneration.
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Affiliation(s)
- Binyin Li
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Yixi He
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Jianfang Ma
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Pei Huang
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Juanjuan Du
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Li Cao
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Yan Wang
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Qin Xiao
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Huidong Tang
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China.
| | - Shengdi Chen
- Department of Neurology & Collaborative Innovation Center for Brain Science, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China.
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Wang H, Li Q, Tang H, Ding J, Xu N, Sun S, Chen S. The activated newborn neurons participate in enriched environment induced improvement of locomotor function in APP/PS1 mice. Brain Behav 2019; 9:e01316. [PMID: 31094092 PMCID: PMC6625533 DOI: 10.1002/brb3.1316] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/29/2019] [Accepted: 04/29/2019] [Indexed: 11/06/2022] Open
Abstract
INTRODUCTION Alzheimer's disease (AD) is an age-related neurodegenerative disorder. One of the pathological features of AD is neuronal loss in brain regions associated with cognition, particularly the hippocampus. An enriched environment (EE) can facilitate neuronal plasticity and improve behaviors such as emotion, motor function, and cognition in AD. METHODS After APP/PS1 mice were exposed to EE at an early stage (2 months of age), elevated plus maze performance and contextual fear conditioning were tested, and neurogenesis and the extent of activation in the hippocampus were observed. RESULTS The results showed that, compared with that in the mice that experienced a standard environment, the cognition of the mice exposed to EE, as measured by contextual fear conditioning, was not statistically significant. However, based on their performance in the elevated plus maze, the index was increased in the mice, especially the APP/PS1 mice, exposed to EE. Consistent with the behavioral changes, the APP/PS1 mice exposed to EE showed an increased number of c-Fos-positive neurons and elevated neurogenesis in the dentate gyrus (DG) area. In addition, the activation of newborn neurons did not occur in the other three groups. CONCLUSIONS These results indicate that the activation of newborn neurons may participate in the improvement of behavioral performance in APP/PS1 mice after EE.
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Affiliation(s)
- Hualong Wang
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiongqiong Li
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huidong Tang
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianqing Ding
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Nanjie Xu
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Suya Sun
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengdi Chen
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Xu Y, Liu X, Shen J, Tian W, Fang R, Li B, Ma J, Cao L, Chen S, Li G, Tang H. The Whole Exome Sequencing Clarifies the Genotype- Phenotype Correlations in Patients with Early-Onset Dementia. Aging Dis 2018; 9:696-705. [PMID: 30090657 PMCID: PMC6065298 DOI: 10.14336/ad.2018.0208] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 02/08/2018] [Indexed: 12/23/2022] Open
Abstract
Our study aimed to identify the underlying causes in patients with early onset dementia by clinical and genetic exploration. We recruited a group of 38 patients with early-onset dementia. Firstly, hexanucleotide repeat expansions in C9ORF72 gene were screened in all subjects to exclude the possibility of copy number variation. Then, the whole exome sequencing (WES) was conducted, and the data were analyzed focusing on 89 dementia-related causing and susceptible genes. The effects of identified variants were classified according to the American College of Medical Genetics and Genomics (ACMG) standards and guidelines. There were no pathogenic expansions in C9ORF72 detected. According to the ACMG standards and guidelines, we identified five known pathogenic mutations, PSEN1 P284L, PSEN1c.857-1G>A, PSEN1 I143T, PSEN1 G209E and MAPT G389R, and one novel pathogenic mutation APP K687N. All these mutations caused dementia with the mean onset age of 38.3 (range from 27 to 51) and rapid progression. Eleven variants with uncertain significance were also detected and needed further verification. The clinical phenotypes of dementia are heterogeneous, with both onset ages and clinical features being influenced by mutation position as well as the causative gene. WES can serve as efficient diagnostic tools for different heterogeneous dementia.
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Affiliation(s)
- Yangqi Xu
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoli Liu
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,3Department of Neurology, Shanghai Fengxian District Central Hospital, Shanghai Jiao Tong University Affiliated Sixth People's Hospital South Campus, Shanghai, China
| | - Junyi Shen
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wotu Tian
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Rong Fang
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,4Department of Neurology, Ruijin Hospital North, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Binyin Li
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jianfang Ma
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Li Cao
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shengdi Chen
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Guanjun Li
- 2Shanghai Mental Health Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Huidong Tang
- 1Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Lin Y, Li B, Tang H, Xu Q, Wu Y, Cheng Q, Li C, Xiao S, Shen L, Tang W, Yu H, He N, Lin H, Yan F, Cao W, Yang S, Liu Y, Zhao W, Lu D, Jiao B, Xiao X, Zhou L, Chen S. Shanghai cognitive intervention of mild cognitive impairment for delaying progress with longitudinal evaluation-a prospective, randomized controlled study (SIMPLE): rationale, design, and methodology. BMC Neurol 2018; 18:103. [PMID: 30041656 PMCID: PMC6057042 DOI: 10.1186/s12883-018-1100-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Accepted: 07/09/2018] [Indexed: 11/21/2022] Open
Abstract
Background Mild cognitive impairment is an early stage of Alzheimer’s disease. Increasing evidence has indicated that cognitive training could improve cognitive abilities of MCI patients in multiple cognitive domains, making it a promising therapeutic approach for MCI. However, the effect of long-time training has not been widely explored. It is also necessary to evaluate the extent how it could reduce the convertion rate from MCI to AD. Methods/design The SIMPLE study is a multicenter, randomized, single-blind prospective clinical trial assessing the effects of computerized cognitive training on different cognitive domains in MCI patients. It is carried out in 7 centers in China. The study population includes patients aged 50–85, and they are randomly allocated to the training or control group. The primary outcome is to compare the conversion rate of MCI within 36-month follow-up. Structural and functional MRI will be used to interpret the effect of cognitive training. The cognitive training comprises a variety of games related with cognitive domains such as attention, memory, visualspatial ability and executive function. We cautiously set 50% reduction in the rate of conversion as estimated effect. With 80–90% statistical power and 12% as the overall probability of conversion within the study period, 600–800 patients are finally required in the study. The first patent has been recruited in April 2017. Discussion Previous studies suggested the benefit of cognitive training for MCI, but neither long-time nor Chinese culture were investigated. The SIMPLE designs and utilizes an improved computerized cognitive training approach and assesses its effects on MCI progress. In addition, neural activities explaining the effects on cognition function changes will be revealed, which could in turn to imply more useful therapeutic approaches. Trial registration ClinicalTrials.gov Identifier: NCT03119051. Electronic supplementary material The online version of this article (10.1186/s12883-018-1100-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yiqi Lin
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Binyin Li
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Huidong Tang
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Qun Xu
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Yuncheng Wu
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Qi Cheng
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Chunbo Li
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Shifu Xiao
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Lu Shen
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Weiguo Tang
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Hui Yu
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Naying He
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Huawei Lin
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Fuhua Yan
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Wenwei Cao
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Shilin Yang
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Ye Liu
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Wei Zhao
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Dong Lu
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Bin Jiao
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xuewen Xiao
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Lin Zhou
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Shengdi Chen
- Department of Neurology & Institute of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
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Li G, Tang H, Chen J, Qi X, Chen S, Ma J. Executive and Visuospatial Dysfunction in Patients With Primary Restless Legs Syndrome/Willis-Ekbom Disease: Study of a Chinese Population. J Clin Sleep Med 2018; 14:785-790. [PMID: 29734979 DOI: 10.5664/jcsm.7106] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Accepted: 01/26/2018] [Indexed: 01/12/2023]
Abstract
STUDY OBJECTIVES The aim of the study was to investigate the cognitive function of patients with primary restless legs syndrome/Willis-Ekbom disease (RLS/ WED) in a Chinese population. METHODS A total of 40 patients with RLS/WED who were drug naïve and 40 controls, matched by age, sex, and educational level, were evaluated by cognitive function assessments, including the Chinese version of the Mini-Mental State Examination (MMSE-C), clock drawing test (CDT), Auditory Verbal Learning Test (AVLT), Rey-Osterrieth Complex Figure Test (CFT), and Stroop Color Word Test (SCWT). RESULTS Patients with RLS/WED showed worse performance on the SCWT (Stroop Card C time: 102.36 ± 17.12 versus 87.08 ± 7.73 seconds, P = .033; Interference Index: 3.39 ± 0.38 versus 2.90 ± 0.15, P < .0001), CFT (24.05 ± 9.28 versus 33.74 ± 1.59, P = .008), and CDT than controls (16-score method: 10.13 ± 3.94 versus 13.98 ± 1.79, P = .0002) after adjusting for Hamilton Anxiety Scale score, Hamilton Depression Scale score, Epworth Sleepiness Scale score, and Pittsburgh Sleep Quality Index total score to eliminate the confounders of concomitant sleep disturbances, anxiety, and depression. CONCLUSIONS Our study suggested that cognitive functions involving executive and visuospatial domains might be disturbed in Chinese patients with primary RLS/WED.
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Affiliation(s)
- Gen Li
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; *contributed equally
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; *contributed equally
| | - Jie Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; *contributed equally
| | - Xuemei Qi
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; *contributed equally
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; *contributed equally
| | - Jianfang Ma
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; *contributed equally
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Abstract
Study Objectives The aim of the study was to investigate the relationship between genetic factors and primary restless legs syndrome (RLS) in Chinese population. Methods A total of 116 RLS patients and 200 controls were recruited and the diagnosis of RLS was based on the criteria of International RLS Study Group. Polymer chain reaction (PCR) and sequencing were used to detect 19 single nucleotide polymorphisms (SNPs) in six genetic loci (MEIS1, BTBD9, PTPRD, MAP2K5/SKOR1, TOX3, and Intergenic region of 2p14). Results Our study found that one SNP increased the risk of RLS in Chinese population: rs6494696 of MAP2K5/SKOR1 (odds ratio [OR] = 0.09, p < .0001, recessive model). A further meta-analysis of RLS in Asian population found that two SNPs of BTBD9 increased the risk of RLS: rs9296249 of BTBD9 (OR = 1.44, p = .000, T allele), rs9357271 of BTBD9 (OR = 1.38, p = .021, dominant model). Conclusion Our results confirmed the association of BTBD9 and MAP2K5/SKOR1 with primary RLS in Chinese population.
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Affiliation(s)
- Gen Li
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Cheng Wang
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xuemei Qi
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jie Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jianfang Ma
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
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Li B, Tang H, Chen S, He N, Yan F. [P1–096]: MULTI‐MODEL COGNITIVE TRAINING FOR MILD COGNITIVE IMPAIRMENT PATIENTS: CLINICAL AND FUNCTIONAL NEUROIMAGING OUTCOMES FROM A PILOT STUDY. Alzheimers Dement 2017. [DOI: 10.1016/j.jalz.2017.06.163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Binyin Li
- Ruijin Hospital affiliated to Shanghai Jiaotong University School of MedicineShanghaiChina
| | - Huidong Tang
- Ruijin Hospital affiliated to Shanghai Jiaotong University School of MedicineShanghaiChina
| | - Shengdi Chen
- Institute of Health Science, Shanghai Institutes for Biological SciencesChinese Academy of ScienceShanghaiChina
- Department of Neurology and Institute of NeurologyRuijin Hospital affiliated to Shanghai Jiaotong University School of MedicineShanghaiChina
- Ruijin Hospital affiliated to Shanghai Jiaotong UniversityShanghaiChina
| | - Naying He
- Ruijin Hospital affiliated to Shanghai Jiaotong University School of MedicineShanghaiChina
| | - Fuhua Yan
- Ruijin Hospital affiliated to Shanghai Jiaotong University School of MedicineShanghaiChina
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Li B, Tang H, Chen S. P3‐216: Retrieval Deficiency in Brain Activity of Working Memory in Amnestic Mild Cognitive Impairment Patients: A Brain Event‐Related Potentials Study. Alzheimers Dement 2016. [DOI: 10.1016/j.jalz.2016.06.1878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Binyin Li
- Ruijin Hospital Affiliated to Shanghai Jiaotong UniversityShanghaiChina
| | - Huidong Tang
- Ruijin Hospital Affiliated to Shanghai Jiaotong UniversityShanghaiChina
| | - Shengdi Chen
- Ruijin Hospital Affiliated to Shanghai Jiaotong UniversityShanghaiChina
- Institute of Health Science, Shanghai Institutes for Biological Sciences Chinese Academy of Science ShanghaiChina
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32
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Affiliation(s)
- Binyin Li
- Ruijin Hospital affiliated to Shanghai Jiaotong UniversityShanghaiChina
| | - Huidong Tang
- Ruijin Hospital affiliated to Shanghai Jiaotong UniversityShanghaiChina
| | - Shengdi Chen
- Ruijin Hospital affiliated to Shanghai Jiaotong UniversityShanghaiChina
- Institute of Health Science, Shanghai Institutes for Biological Sciences, Chinese Academy of ScienceShanghaiChina
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Liu XL, Huang XJ, Luan XH, Zhou HY, Wang T, Wang JY, Chen SD, Tang HD, Cao L. Mutations of SCN4A gene cause different diseases: 2 case reports and literature review. Channels (Austin) 2016; 9:82-7. [PMID: 25839108 DOI: 10.1080/19336950.2015.1012945] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
SCN4A encodes the Nav1.4 channel and mutations in SCN4A lead to different ionic channelopathies. In this study, one sporadic individual of periodic paralysis, one paramyotonia family and 200 normal healthy controls are enrolled. Genomic DNA was extracted from peripheral blood leukocytes, followed by polymerase chain reaction and DNA sequencing of candidate genes, including SCN4A and CACNA1S. As a result, heterozygous mutations c.2024G>A (R675Q) and c.1333G>A (V445M) of gene SCN4A were identified in the hypokalemic periodic paralysis patient and the paramyotonia congenita family respectively. Both mutations were not detected in healthy controls. Compared with reported cases, patients with mutation R675Q usually do not present hypokalemic periodic paralysis but hyperkalemic or normokalemic periodic paralysis. The mutation V445M was first reported in Chinese patients with nondystrophic myotonias. In addition, we carried out literature review by summarizing clinical features of the 2 mutations and establish the genotype-phenotype correlations to provide guidance for diagnosis.
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Affiliation(s)
- Xiao-li Liu
- a Department of Neurology ; Rui Jin Hospital & Rui Jin Hospital North ; Shanghai Jiao Tong University School of Medicine ; Shanghai , China
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Wu Y, Wang X, Wang C, Sun Q, Song N, Zhou Y, Jiang Q, Qiao Y, Xu J, Liang L, Tang H, Ma J, Gao X, Chen SD. Prevalence and clinical features of non-motor symptoms of essential tremor in Shanghai rural area. Parkinsonism Relat Disord 2016; 22:15-20. [DOI: 10.1016/j.parkreldis.2015.10.617] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 09/17/2015] [Accepted: 10/31/2015] [Indexed: 10/22/2022]
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Ma J, Jiang Q, Xu J, Sun Q, Qiao Y, Chen W, Wu Y, Wang Y, Xiao Q, Liu J, Tang H, Chen S. Plasma insulin-like growth factor 1 is associated with cognitive impairment in Parkinson's disease. Dement Geriatr Cogn Disord 2015; 39:251-6. [PMID: 25661865 DOI: 10.1159/000371510] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE The aim of this study was to test plasma insulin-like growth factor 1 (IGF-1) change in Parkinson's disease (PD) and essential tremor (ET), and assess the association of plasma IGF-1 level with motor and nonmotor symptoms in PD and ET. METHODS Plasma IGF-1 was measured in 100 PD patients, 40 ET patients, and 76 healthy controls. Motor and nonmotor symptoms were assessed by different scales. Spearman correlation test and linear logistic model were used to analyze the correlation of plasma IGF-1 with motor and nonmotor symptoms of PD and ET. RESULTS The plasma IGF-1 level was significantly increased in PD compared to healthy controls and ET patients. In addition, low plasma IGF-1 was correlated with low Mini-Mental State Examination (MMSE) scores in PD patients. However, no correlation was found between plasma IGF-1 and MMSE scores in ET patients. CONCLUSION Plasma IGF-1 increased significantly in PD but remained unchanged in ET. A low plasma IGF-1 level was associated with poor cognitive performance in PD but not in ET patients.
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Affiliation(s)
- Jianfang Ma
- Department of Neurology and Institute of Neurology, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
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Tan Y, Xin X, Xiao Q, Chen S, Cao L, Tang H. Hemiballism-hemichorea induced by ketotic hyperglycemia: case report with PET study and review of the literature. Transl Neurodegener 2014; 3:14. [PMID: 25031834 PMCID: PMC4100749 DOI: 10.1186/2047-9158-3-14] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 07/03/2014] [Indexed: 01/30/2023] Open
Abstract
Hemiballism-hemichorea (HB-HC) is commonly used to describe the basal ganglion dysfunction in non-ketotic hyperglycemic elderly patients. Here we report two elderly female patients with acute onset of involuntary movements induced by hyperglycemia with positive urine ketones. We described the computed tomography and magnetic resonance imaging findings in these two patients, which is similar to that of non-ketotic hyperglycemic HB-HC patients. FDG-PET was performed and the glucose metabolism in the corresponding lesion in these two patients was contradictory with each other. We tried to clarify the underlying mechanisms of HB-HC and explain the contradictory neuroradiological findings in FDG-PET as being performed at different clinical stages.
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Affiliation(s)
- Yuyan Tan
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Xiaoyu Xin
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Qin Xiao
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Shengdi Chen
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Li Cao
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Huidong Tang
- Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Sun Y, Yin Q, Fang R, Yan X, Wang Y, Bezerianos A, Tang H, Miao F, Sun J. Disrupted functional brain connectivity and its association to structural connectivity in amnestic mild cognitive impairment and Alzheimer's disease. PLoS One 2014; 9:e96505. [PMID: 24806295 PMCID: PMC4013022 DOI: 10.1371/journal.pone.0096505] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 04/08/2014] [Indexed: 11/19/2022] Open
Abstract
Although anomalies in the topological architecture of whole-brain connectivity have been found to be associated with Alzheimer's disease (AD), our understanding about the progression of AD in a functional connectivity (FC) perspective is still rudimentary and few study has explored the function-structure relations in brain networks of AD patients. By using resting-state functional MRI (fMRI), this study firstly investigated organizational alternations in FC networks in 12 AD patients, 15 amnestic mild cognitive impairment (aMCI) patients, and 14 age-matched healthy aging subjects and found that all three groups exhibit economical small-world network properties. Nonetheless, we found a decline of the optimal architecture in the progression of AD, represented by a more localized modular organization with less efficient local information transfer. Our results also show that aMCI forms a boundary between normal aging and AD and represents a functional continuum between healthy aging and the earliest signs of dementia. Moreover, we revealed a dissociated relationship between the overall FC and structural connectivity (SC) in AD patients. In this study, diffusion tensor imaging tractography was used to map the structural network of the same individuals. The decreased FC-SC coupling may be indicative of more stringent and less dynamic brain function in AD patients. Our findings provided insightful implications for understanding the pathophysiological mechanisms of brain dysfunctions in aMCI and AD patients and demonstrated that functional disorders can be characterized by multimodal neuroimaging-based metrics.
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Affiliation(s)
- Yu Sun
- Singapore Institute for Neurotechnology (SINAPSE), Center for Life Sciences, National University of Singapore, Singapore
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Qihua Yin
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rong Fang
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoxiao Yan
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Ying Wang
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Anastasios Bezerianos
- Singapore Institute for Neurotechnology (SINAPSE), Center for Life Sciences, National University of Singapore, Singapore
| | - Huidong Tang
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fei Miao
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junfeng Sun
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
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Ma J, Zhou Y, Xu J, Liu X, Wang Y, Deng Y, Wang G, Xu W, Ren R, Liu X, Zhang Y, Wang C, Tang H, Chen S. Association study ofTREM2polymorphism rs75932628 with late-onset Alzheimer’s disease in Chinese Han population. Neurol Res 2014; 36:894-6. [DOI: 10.1179/1743132814y.0000000376] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Xu W, Xu J, Wang Y, Tang H, Deng Y, Ren R, Wang G, Niu W, Ma J, Wu Y, Zheng J, Chen S, Ding J. The genetic variation of SORCS1 is associated with late-onset Alzheimer's disease in Chinese Han population. PLoS One 2013; 8:e63621. [PMID: 23700427 PMCID: PMC3659081 DOI: 10.1371/journal.pone.0063621] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 04/04/2013] [Indexed: 12/17/2022] Open
Abstract
The variations of SORCS1 gene may play potential key roles in late-onset Alzheimer’s disease (LOAD). To evaluate the relationship between the polymorphism of SORCS1 gene and LOAD in the ethnic Han Chinese, we conducted a case–control study to investigate the association between the single-nucleotide polymorphisms (SNPs) in intron 1 of SORCS1 and LOAD in Chinese Han population. Six reported SNPs in intron 1 of SORCS1 were analyzed by Snapshot, genotyping and haplotyping in 236 Chinese LOAD cases and 233 matched controls. The significant differences in frequencies of two SNPs (rs10884402, rs950809) were found between the two groups. In addition, haplotype analyses revealed that, in the LOAD group, the frequency of haplotypes C-C-G-T-C (alleles in order of rs17277986, rs6584777, rs10884402, rs7078098, rs950809 polymorphisms) were significantly higher (Psim<0.0001) while haplotype C-C-A-T-C, C-C-A-C-C, T-T-A-C-C were significantly lower (Psim<0.0001). Our data suggested that the genetic variation of the rs10884402 and rs950809 in intron 1 of SORCS1 was associated with the late-onset AD in the Chinese Han population.
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Affiliation(s)
- Wei Xu
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jun Xu
- Department of Neurology, Nanjing Medical University Affiliated Nanjing Brain Hospital, Nanjing, Jiangsu, China
| | - Ying Wang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Huidong Tang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yulei Deng
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Rujing Ren
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Gang Wang
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wenquan Niu
- State Key Laboratory of Medical Genomics, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jianfang Ma
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yiwen Wu
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jialin Zheng
- Pharmacology and Experimental Neuroscience and Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Shengdi Chen
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Lab of Neurodegenerative Diseases and Key Laboratory of Stem Cell Biology, Institute of Health Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Science and School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- * E-mail: (SC); (JD)
| | - Jianqing Ding
- Department of Neurology and Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Lab of Neurodegenerative Diseases and Key Laboratory of Stem Cell Biology, Institute of Health Science, Shanghai Institutes of Biological Sciences, Chinese Academy of Science and School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- * E-mail: (SC); (JD)
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Tang H, Mao X, Xie L, Greenberg DA, Jin K. Expression level of vascular endothelial growth factor in hippocampus is associated with cognitive impairment in patients with Alzheimer's disease. Neurobiol Aging 2012. [PMID: 23182805 DOI: 10.1016/j.neurobiolaging.2012.10.029] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Although the enhanced expression of vascular endothelial growth factor (VEGF) in the brains of patients with Alzheimer's disease (AD) has been reported, the functional significance of VEGF level in the progression of AD is still unclear. We examined the VEGF expression in the hippocampus of patients with AD at different stages of progression by Western blot analysis, and found that the VEGF189 isoform (VEGF(189)) was barely detectable in normal hippocampus, but significantly increased at the early stage of patients with AD. VEGF(189) was decreased with advancing stages of AD. Immunostaining shows that VEGF was significantly increased in the cells in the CA1, CA3, and dentate gyrus regions of hippocampus and layers III and V of entorhinal cortex of patients with AD, compared with normal brain. Confocal images show that VEGF was predominantly expressed in neurons and astrocytes in the hippocampus and entorhinal cortex of patients with AD. Our data suggest that VEGF level is associated with progressive loss of cognitive function in patients with AD.
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Affiliation(s)
- Huidong Tang
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Zhao J, Tang H, Sun J, Wang B, Chen S, Fu Y. Analysis of cognitive dysfunction with silent cerebral infarction: a prospective study in Chinese patients. Metab Brain Dis 2012; 27:17-22. [PMID: 22193539 DOI: 10.1007/s11011-011-9275-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2011] [Accepted: 12/05/2011] [Indexed: 10/14/2022]
Abstract
To investigate the relationship between Silent Cerebral Infarction (SCI) and cognitive impairment to testify that Montreal Cognitive Assessment (MoCA) is a more sensitive screening tool than the Mini Mental State Examination (MMSE) to identify cognitive deficits in patients with SCI. We recruited 196 individuals in Shanghai of China and divided them into 2 groups: the SCI group including 112 individuals (45 men and 67 women; aged from 43 to 70 years old) and the control group including 84 individuals (43 men and 41 women; aged from 42 to 79 years old). We collected information including participants' gender, age, blood glucose, kidney function, blood lipids, blood pressure, Electrocardiogram (ECG), carotid artery ultrasound, MMSE score, and MoCA score. SAS software (version 9.1) was used to perform statistical analysis on physical examinations outcomes from 196 participants. Furthermore, multiple logistic regression model was built up to screen out the independent risk factors of SCI. Besides, Receiver Operator Characteristic (ROC) analysis was also used. Multivariate logistic regression analysis showed that abnormal ECG and existence of carotid artery plaques were independent risk factors of SCI occurrence, while MoCA scores was negatively associated with SCI risk. Moreover, MoCA might be more valuable in predicting vascular cognitive impairment (VCI) than MMSE (0.667 vs 0.626). We found that the MMSE was generally insensitive to detect cognitive impairment; but the MoCA has a good balance of sensitivity and specificity at the cut-score of 26. We found that the patients with SCI might accompany with VCI and the MoCA appeared to be an excellent screening test for patients with SCI, worthy of being promoted in the clinical practitioning on Chinese population.
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Affiliation(s)
- Jing Zhao
- Department of Neurology, Minhang Central Hospital, Shanghai 201100, China
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Butterfield DA, Galvan V, Lange MB, Tang H, Sowell RA, Spilman P, Fombonne J, Gorostiza O, Zhang J, Sultana R, Bredesen DE. In vivo oxidative stress in brain of Alzheimer disease transgenic mice: Requirement for methionine 35 in amyloid beta-peptide of APP. Free Radic Biol Med 2010; 48:136-44. [PMID: 19854267 PMCID: PMC2818480 DOI: 10.1016/j.freeradbiomed.2009.10.035] [Citation(s) in RCA: 136] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2009] [Revised: 09/26/2009] [Accepted: 10/14/2009] [Indexed: 10/20/2022]
Abstract
Numerous studies have demonstrated oxidative damage in the central nervous system in subjects with Alzheimer disease and in animal models of this dementing disorder. In this study, we show that transgenic mice modeling Alzheimer disease-PDAPP mice with Swedish and Indiana mutations in the human amyloid precursor protein (APP)-develop oxidative damage in brain, including elevated levels of protein oxidation (indexed by protein carbonyls and 3-nitrotyrosine) and lipid peroxidation (indexed by protein-bound 4-hydroxy-2-nonenal). This oxidative damage requires the presence of a single methionine residue at position 35 of the amyloid beta-peptide (Abeta), because all indices of oxidative damage in brain were completely prevented in genetically and age-matched PDAPP mice with an M631L mutation in APP. No significant differences in the levels of APP, Abeta(1-42), and Abeta(1-40) or in the ratio Abeta(1-42)/Abeta(1-40) were found, suggesting that the loss of oxidative stress in vivo in the brain of PDAPP(M631L) mice results solely from the mutation of the Met35 residue to Leu in the Abeta peptide. However, a marked reduction in Abeta-immunoreactive plaques was observed in the M631L mice, which instead displayed small punctate areas of nonplaque immunoreactivity and a microglial response. In contrast to the requirement for Met at residue 35 of the Abeta sequence (M631 of APP) for oxidative damage, indices of spatial learning and memory were not significantly improved by the M631L substitution. Furthermore, a genetically matched line with a different mutation-PDAPP(D664A)-showed the reverse: no reduction in oxidative damage but marked improvement in memory. This is the first in vivo study to demonstrate the requirement for Abeta residue Met35 for oxidative stress in the brain of a mammalian model of Alzheimer disease. However, in this specific transgenic mouse model of AD, oxidative stress is neither required nor sufficient for memory abnormalities.
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Affiliation(s)
- D Allan Butterfield
- Department of Chemistry, Center of Membrane Sciences, and Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA.
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Galvan V, Zhang J, Gorostiza OF, Banwait S, Huang W, Ataie M, Tang H, Bredesen DE. Long-term prevention of Alzheimer's disease-like behavioral deficits in PDAPP mice carrying a mutation in Asp664. Behav Brain Res 2008; 191:246-55. [PMID: 18485495 DOI: 10.1016/j.bbr.2008.03.035] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2007] [Revised: 03/25/2008] [Accepted: 03/28/2008] [Indexed: 11/20/2022]
Abstract
The deficits of Alzheimer's disease (AD) are believed to result, at least in part, from neurotoxicity of beta-amyloid (Abeta), a set of 38-43 amino acid fragments derived from the beta-amyloid precursor protein (APP). In addition, APP generates the APP-C31 and Jcasp toxic fragments intracellularly by cleavage at Asp664. We reported that mutation of Asp664 to Ala in a FAD-human APP transgene prevented AD-like deficits but did not affect Abeta production or deposition in PDAPP mice, arguing that D664A plays a crucial role in the generation of AD-like deficits. Whether D664A simply delays or completely prevents AD-like deficits, however, remained undefined. To address this question, we performed behavioral studies longitudinally on a pretrained mouse cohort at 9 and 13 months (mo) of age. While behavioral deficits were present in PDAPP mice, performance of Tg PDAPP(D664A) mice was not significantly different from non-Tg littermates' across all ages tested. Moreover, aberrant patterns in non-cognitive components of behavior in PDAPP mice were ameliorated in PDAPP(D664A) animals as well. A trend towards poorer retention at 9 mo and poorer learning at 13 mo that did not reach statistical significance was observed in PDAPP(D664A) mice. These results support and extend recent studies showing that cleavage of APP at Asp664 (or protein-protein interactions dependent on Asp664) is a crucial event in the generation of AD-like deficits in PDAPP mice. Our results thus further demonstrate that the D664A mutation either completely precludes, or markedly delays (beyond 13 mo) the appearance of AD-like deficits in this mouse model of AD.
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Affiliation(s)
- Veronica Galvan
- Buck Institute for Age Research, 8001 Redwood Blvd., Novato, CA 94945, USA.
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Nguyen TVV, Galvan V, Huang W, Banwait S, Tang H, Zhang J, Bredesen DE. Signal transduction in Alzheimer disease: p21-activated kinase signaling requires C-terminal cleavage of APP at Asp664. J Neurochem 2007; 104:1065-80. [PMID: 17986220 DOI: 10.1111/j.1471-4159.2007.05031.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The deficits in Alzheimer disease (AD) stem at least partly from neurotoxic beta-amyloid peptides generated from the amyloid precursor protein (APP). APP may also be cleaved intracellularly at Asp664 to yield a second neurotoxic peptide, C31. Previously, we showed that cleavage of APP at the C-terminus is required for the impairments seen in APP transgenic mice, by comparing elements of the disease in animals modeling AD, with (platelet-derived growth factor B-chain promoter-driven APP transgenic mice; PDAPP) versus without (PDAPP D664A) a functional Asp664 caspase cleavage site. However, the signaling mechanism(s) by which Asp664 contributes to these deficits remains to be elucidated. In this study, we identify a kinase protein, recently shown to bind APP at the C-terminus and to contribute to AD, whose activity is modified in PDAPP mice, but normalized in PDAPP D664A mice. Specifically, we observed a significant increase in nuclear p21-activated kinase (isoforms 1, 2, and or 3; PAK-1/2/3) activation in hippocampus of 3 month old PDAPP mice compared with non-transgenic littermates, an effect completely prevented in PDAPP D664A mice. In contrast, 13 month old PDAPP mice displayed a significant decrease in PAK-1/2/3 activity, which was once again absent in PDAPP D664A mice. Similarly, in hippocampus of early and severe AD subjects, there was a progressive and subcellular-specific reduction in active PAK-1/2/3 compared with normal controls. Interestingly, total PAK-1/2/3 protein was increased in early AD subjects, but declined in moderate AD and declined further, to significantly below that of control levels, in severe AD. These findings are compatible with previous suggestions that PAK may be involved in the pathophysiology of AD, and demonstrate that both early activation and late inactivation in the murine AD model require the cleavage of APP at Asp664.
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Tang H, Wang Y, Xie L, Mao X, Won SJ, Galvan V, Jin K. Effect of neural precursor proliferation level on neurogenesis in rat brain during aging and after focal ischemia. Neurobiol Aging 2007; 30:299-308. [PMID: 17644223 PMCID: PMC2634816 DOI: 10.1016/j.neurobiolaging.2007.06.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2006] [Revised: 06/04/2007] [Accepted: 06/05/2007] [Indexed: 01/17/2023]
Abstract
The observed age-related decline in neurogenesis may result from reduced proliferation or increased death rate of neuronal precursor cells (NPCs). We found that caspase-3, but not caspase-6, -7, or -9, was activated in NPCs in neurogenic regions of young, young-adult, middle-aged and aged rat brains. The number of capase-3-immunoreactive cells was highest in young and lowest in aged rats. Surprisingly, intraventricular administration of a caspase-3 inhibitor failed to restore the number of BrdU-positive cells in the aged dentate gyrus, suggesting that the age-related decline in neurogenesis may be attributable primarily to reduced proliferation. Additionally, we also found that NPCs in the subventricular zone of young-adult and aged rat brain were increased after focal cerebral ischemia, suggesting that the increase in neurogenesis induced by ischemia may result from an increase in the rate of NPC proliferation, but not from a decrease in NPC death. Thus, our results suggest that age-related and injury-induced changes in the rate of neurogenesis are controlled at the level of NPC proliferation. Furthermore, our results may imply that the mechanisms that maintain a stable population of NPCs in the normal adult and in the ischemic brain, which account for the observed age-dependent reduction or injury-induced increases in neurogenesis, impinge on the regulation of cell division at the NPC level.
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Affiliation(s)
- Huidong Tang
- Buck Institute for Age Research, 8001 Redwood Blvd. Novato, California 94949, USA
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yaoming Wang
- Buck Institute for Age Research, 8001 Redwood Blvd. Novato, California 94949, USA
| | - Lin Xie
- Buck Institute for Age Research, 8001 Redwood Blvd. Novato, California 94949, USA
| | - XiaoOu Mao
- Buck Institute for Age Research, 8001 Redwood Blvd. Novato, California 94949, USA
| | - Seok Joon Won
- Buck Institute for Age Research, 8001 Redwood Blvd. Novato, California 94949, USA
| | - Veronica Galvan
- Buck Institute for Age Research, 8001 Redwood Blvd. Novato, California 94949, USA
| | - Kunlin Jin
- Buck Institute for Age Research, 8001 Redwood Blvd. Novato, California 94949, USA
- Corresponding Author: Kunlin Jin, Buck Institute for Age Research, 8001 Redwood Blvd., Novato, CA 94945-0638, (415) 209-2086, (415) 209-2230,
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Won SJ, Xie L, Kim SH, Tang H, Wang Y, Mao X, Banwait S, Jin K. Influence of age on the response to fibroblast growth factor-2 treatment in a rat model of stroke. Brain Res 2006; 1123:237-44. [PMID: 17064673 PMCID: PMC1820636 DOI: 10.1016/j.brainres.2006.09.055] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2006] [Revised: 09/14/2006] [Accepted: 09/15/2006] [Indexed: 10/24/2022]
Abstract
Basic fibroblast growth factor (FGF-2) has been reported to protect against ischemic injury in the brains of young adult rodents. However, little is known about whether FGF-2 retains this capability in the aged ischemic brain. Since stroke in human is much more common in older people than among younger adults, to address this question is clinically important. In this study, aged (24-month-old) rats were treated with intracerebroventricular infusion of FGF-2 or vehicle for 3 days, beginning 48 h before (pre-ischemia), 24 h after (early post-ischemia), or 96 h after (late post-ischemia) 60 min of middle cerebral artery occlusion, and were killed 10 days after ischemia. Aged rats given FGF-2 pre-ischemia showed better symmetry of movement and forepaw outstretching, and reduced infarct volumes, compared to rats treated with vehicle, but no significant improvement was found in aged rats given FGF-2 after focal ischemia. In contrast, young adult (3-month-old) rats treated with FGF-2 for 3 days beginning 24 h post-ischemia showed significant neurobehavioral improvement and better histological outcome. In addition, we also found that newborn neurons in the rostral subventricular zone (SVZ) were increased in aged rats treated with FGF-2 prior to ischemia. However, unlike in young adult ischemic rats, only a few of newly generated cells migrated into the damaged region in aged brain after focal ischemia. These findings point to differences in the response of aged versus young adult rats to FGF-2 in cerebral ischemia, and suggest that such differences need to be considered in the development of neuroprotective agents for stroke.
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Affiliation(s)
- Seok Joon Won
- Buck Institute for Age Research, 8001 Redwood Boulevard, Novato, CA 94945, USA
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