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Li Q, Cen K, Cui Y, Feng X, Hou X. Uric acid levels and their association with vascular dementia and Parkinson's disease dementia: a meta-analysis. Neurol Sci 2023; 44:2017-2024. [PMID: 36690824 DOI: 10.1007/s10072-023-06620-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 01/10/2023] [Indexed: 01/25/2023]
Abstract
OBJECTIVES To explore the association between uric acid (UA) levels and vascular dementia (VaD) and Parkinson's disease dementia (PDD), a meta-analysis was conducted. METHODS The relevant studies were identified by searching PubMed, Embase, Web of Science, and Cochrane Collaboration Database up to May 2022. Pooled analysis, sensitivity analysis, and publication bias examination were all conducted. All analyses were performed by using STATA 16. RESULTS Twelve studies with a total of 2097 subjects were included. The pooled analysis showed that UA levels were not associated with VaD (WMD = - 10.99 μmol/L, 95% CI (- 48.05, 26.07), P = 0.561) but were associated with PDD (WMD = - 25.22 μmol/L, 95% CI (- 43.47, - 6.97), P = 0.007). The statistical stability and reliability were evaluated using sensitivity analysis and publication bias outcomes. CONCLUSION UA levels are associated with PDD but not with VaD. This study will help to strengthen our knowledge of the pathophysiologies of VaD and PDD, and promote the development of prevention and treatment strategies.
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Affiliation(s)
- Qian Li
- School of Public Health, Shenyang Medical College, 146 Huanghe North Street, Shenyang, 110034, China
| | - Kaiwen Cen
- School of Public Health, Shenyang Medical College, 146 Huanghe North Street, Shenyang, 110034, China
| | - Ying Cui
- School of Public Health, Shenyang Medical College, 146 Huanghe North Street, Shenyang, 110034, China
| | - Xu Feng
- School of Public Health, Shenyang Medical College, 146 Huanghe North Street, Shenyang, 110034, China
| | - Xiaowen Hou
- School of Public Health, Shenyang Medical College, 146 Huanghe North Street, Shenyang, 110034, China.
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Liu H, Reynolds GP, Wei X. The Influence of Agricultural Work and Plasma Uric Acid on Hospital Admission for Alzheimer's Disease. J Alzheimers Dis 2023; 92:1283-1287. [PMID: 36872782 DOI: 10.3233/jad-221226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
BACKGROUND Exposure to environmental neurotoxins associated with agricultural work, such as pesticides, may be a risk factor for neurodegenerative disorders such as Alzheimer's (AD) and Parkinson's (PD) diseases. There is strong evidence that such exposure is associated with the development of PD; for AD the current evidence is equivocal. Several mechanisms are proposed to mediate this environmental toxicity, one of which is oxidative stress. Uric acid (UA) is an endogenous antioxidant, low levels of which are also implicated in neurodegenerative disease. OBJECTIVE This study aimed to determine whether agricultural work was a risk factor for AD in a population in which its association with PD was established, and whether UA was also associated with AD in this cohort. METHODS Hospital records of subjects meeting criteria for AD (n = 128) or vascular dementia (VaD) (n = 178) after hospital admission for symptoms of dementia were studied. History of agricultural work and plasma UA were recorded and their relationship to diagnosis determined. RESULTS In contrast to previous findings in this population in which agricultural work was strongly associated with PD, a history of agricultural work was not over-represented in hospital admission for AD versus VaD. AD was associated with a reduced level of circulating UA compared with VaD. CONCLUSION Agricultural work as a likely proxy for exposure to pesticides appears not to be a risk factor for AD to the extent found in PD, perhaps reflecting their differences in neuronal pathology. Nevertheless, findings with UA suggests that oxidative stress may be an important factor in AD pathogenesis.
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Affiliation(s)
- Hanxiang Liu
- Department of Neurology, Puer People's Hospital, Puer, Yunnan, China
| | - Gavin P Reynolds
- Biomolecular Sciences Research Centre, Sheffield Hallam University, Sheffield, UK
| | - Xianwen Wei
- Department of Neurology, Puer People's Hospital, Puer, Yunnan, China
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Boytsov S, Samorodskaya I. Cardiovascular disease and cognitive impairment. Zh Nevrol Psikhiatr Im S S Korsakova 2022; 122:7-13. [DOI: 10.17116/jnevro20221220717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Song R, Pan KY, Xu H, Qi X, Buchman AS, Bennett DA, Xu W. Association of cardiovascular risk burden with risk of dementia and brain pathologies: A population-based cohort study. Alzheimers Dement 2021; 17:1914-1922. [PMID: 34310004 PMCID: PMC10266491 DOI: 10.1002/alz.12343] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 03/03/2021] [Accepted: 03/11/2021] [Indexed: 01/30/2023]
Abstract
INTRODUCTION The impact of cardiovascular risk burden on brain pathologies remains unclear. We aimed to examine the association of the Framingham General Cardiovascular Risk Score (FGCRS) with dementia risk, and brain pathologies. METHODS Within the Rush Memory and Aging Project, 1588 dementia-free participants were assessed on FGCRS at baseline and followed up to 21 years. During the follow-up, 621 participants died and underwent autopsies. RESULTS The multi-adjusted hazard ratios (HRs) (95% confidence intervals [CIs]) of FGCRS were 1.03 (1.00-1.07) for dementia and 1.04 (1.01-1.07) for Alzheimer's disease (AD) dementia. Further, a higher FGCRS was associated with higher gross chronic cerebral infarctions (odds ratio [OR] 1.08, 95% CI 1.02-1.14), cerebral atherosclerosis (OR 1.10, 95% CI 1.03-1.17), and global AD pathology (OR 1.06, 95% CI 1.01-1.12). CONCLUSIONS A higher FGCRS is associated with an increased risk of dementia and AD dementia. Both vascular and AD pathologies in the brain may underlie this association.
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Affiliation(s)
- Ruixue Song
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China
| | - Kuan-Yu Pan
- Amsterdam University Medical Center, Vrije Universiteit, Department of Psychiatry, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Hui Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China
| | - Xiuying Qi
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China
| | - Aron S. Buchman
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois, 60612, USA
| | - David A. Bennett
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois, 60612, USA
| | - Weili Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China
- Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
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Abstract
OBJECTIVES Gout, characterised by hyperuricaemia with monosodium urate crystal formation and inflammation, is the most common inflammatory arthritis in adults. Recent studies have found that elevated uric acid levels are related to the occurrence of dementia. We conducted a study to investigate the association between dementia and gout or hyperuricaemia. DESIGN Systematic review and meta-analysis of cohort studies. DATA SOURCES Studies were screened from inception to 28 June 2019 by searching Medline, Embase and the Cochrane Library databases. ELIGIBILITY CRITERIA Cohort studies comparing the risk of dementia in patients with gout and hyperuricaemia versus non-gout and non-hyperuricaemia controls were enrolled. DATA EXTRACTION AND ANALYSIS Two reviewers separately selected studies and extracted data using the Medical Subject Headings without restriction on languages or countries. The adjusted HRs were pooled using the DerSimonian and Laird random effects model. Sensitivity analyses were conducted to evaluate the stability of the results. Publication bias was evaluated using Egger's and Begg's tests. Quality assessment was performed according to the Newcastle-Ottawa Scale. RESULTS Four cohort studies that met the inclusion criteria were included in our meta-analysis. We found that gout and hyperuricaemia did not increase the risk of dementia, with a pooled HR of 0.94 (95% CI 0.69 to 1.28), but might decrease the risk of Alzheimer's disease (AD), with a pooled HR of 0.78 (95% CI 0.64 to 0.95). There was little evidence of publication bias. Quality assessment of the included studies was high (range: 6-8 points). CONCLUSIONS Our study shows that gout and hyperuricaemia do not increase the risk of dementia. However, gout and hyperuricaemia might have a protective effect against AD. Due to the limited number of research articles, more investigations are needed to demonstrate the potential relationship between dementia and gout or hyperuricaemia.
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Affiliation(s)
- Shu-Yue Pan
- Department of Rheumatology and Immunology, Sichuan University West China Hospital, Chengdu, Sichuan, China
- Department of Rheumatology and Immunology, Chengdu Fifth People's Hospital, Chengdu, Sichuan, China
| | - Rui-Juan Cheng
- Department of Rheumatology and Immunology, Sichuan University West China Hospital, Chengdu, Sichuan, China
| | - Zi-Jing Xia
- Department of Rheumatology and Immunology, Sichuan University West China Hospital, Chengdu, Sichuan, China
| | - Qiu-Ping Zhang
- Department of Rheumatology and Immunology, Sichuan University West China Hospital, Chengdu, Sichuan, China
| | - Yi Liu
- Department of Rheumatology and Immunology, Sichuan University West China Hospital, Chengdu, Sichuan, China
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Li Y, Guan S, Jin H, Liu H, Kang M, Wang X, Sheng C, Sun Y, Li X, Fang X, Wang R. The relationship between urinary Alzheimer-associated neuronal thread protein and blood biochemical indicators in the general population. Aging (Albany NY) 2020; 12:15260-15280. [PMID: 32735555 PMCID: PMC7467383 DOI: 10.18632/aging.103356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 05/01/2020] [Indexed: 02/06/2023]
Abstract
Urinary Alzheimer-associated neuronal thread protein (AD7c-NTP) is elevated in early Alzheimer's disease (AD) and mild cognitive impairment, and is considered a biomarker for the early diagnosis of AD. However, it has not yet been investigated whether urinary AD7c-NTP is elevated with increases in blood biochemical indicators related to AD risk factors. We recruited 2180 participants, aged 35-93 years, from communities of four districts in Beijing. Blood biochemical indicators, including blood glucose, blood lipids, renal function, and high-sensitivity C-reactive protein, were measured using routine methods. Urinary AD7c-NTP was detected using an enzyme-linked immunosorbent assay AD7c-NTP kit. In the general population, there were no significant differences in urinary AD7c-NTP levels in subjects with different Mini-Mental State Examination levels or C-reactive protein values. After adjusting for age and sex, there were significant differences in urinary AD7c-NTP levels between different education levels, marital statuses, blood glucose, blood lipids, and kidney function. There was a negative correlation between urinary AD7c-NTP levels and serum creatinine (r = -0.128). There was a positive correlation between urinary AD7c-NTP levels and HbA1c (r = 0.104), insulin (r = 0.101), and triglycerides (r = 0.093). Urinary AD7c-NTP might be useful as a potential indicator to predict AD risk.
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Affiliation(s)
- Yuxia Li
- Central Laboratory, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - Shaochen Guan
- Evidence-Based Medical Center, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,Beijing Geriatric Medical Research Center, Beijing 100053, China
| | - He Jin
- Clinical Laboratory, Affiliated Hospital of Guilin Medical University, Guilin 541001, China
| | - Hongjun Liu
- Evidence-Based Medical Center, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,Beijing Geriatric Medical Research Center, Beijing 100053, China
| | - Meimei Kang
- Central Laboratory, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - Xiaozhen Wang
- Central Laboratory, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - Can Sheng
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing 100053, China
| | - Yu Sun
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing 100053, China
| | - Xuanyu Li
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing 100053, China
| | - Xianghua Fang
- Evidence-Based Medical Center, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,Beijing Geriatric Medical Research Center, Beijing 100053, China
| | - Rong Wang
- Central Laboratory, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,Beijing Geriatric Medical Research Center, Beijing 100053, China.,Center of Alzheimer's Disease, Beijing Institute for Brain Disorders, Beijing 100053, China
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Liu H, Wei X, Yang W, Reynolds GP. Agricultural work and reduced circulating uric acid are both associated with initial hospital admission for Parkinson's disease. J Neural Transm (Vienna) 2019; 127:779-783. [PMID: 31836905 PMCID: PMC7242276 DOI: 10.1007/s00702-019-02119-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 12/08/2019] [Indexed: 11/29/2022]
Abstract
Monoamine oxidase type B inhibitors act in Parkinson's disease (PD) via potentiation of dopamine, but may also have neuroprotective effects by reducing oxidative damage. Oxidative damage is also a feature of environmental toxins, including pesticides, that are an established risk factor for PD. Another risk factor is low circulating uric acid (UA), which may relate to UA being the major endogenous antioxidant in the human body. We have undertaken a study of 192 initial admissions for PD in a general hospital neurology department in a partly rural region of Southern China to determine if there is an increased rate of PD in agricultural workers who have a high risk of exposure to pesticides, and how it may relate to deficits in UA. We found a disproportionately high number of agricultural workers admitted with PD (66.7% vs. 54.3% of all neurology admissions) and that PD subjects have a substantial reduction in UA. This is further reduced in agricultural workers and thus may contribute to the increased vulnerability of this group to PD.
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Affiliation(s)
- Hanxiang Liu
- Department of Neurology, Puer People's Hospital, Puer, Yunnan, China.,Biomolecular Sciences Research Centre, Sheffield Hallam University, Howard Street, Sheffield, S1 1WB, UK
| | - Xianwen Wei
- Department of Neurology, Puer People's Hospital, Puer, Yunnan, China
| | - Wen Yang
- Department of Neurology, Puer People's Hospital, Puer, Yunnan, China
| | - Gavin P Reynolds
- Biomolecular Sciences Research Centre, Sheffield Hallam University, Howard Street, Sheffield, S1 1WB, UK.
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