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To analyze the effect of serum uric acid (UA) on cognitive function in patients with Alzheimer’s disease (AD).
The cognitive function of 259 patients with AD who were followed up more than 3 times in the Alzheimer’s Disease Neuroimaging Initiative (ADNI) follow-up cohort were measured by Mini-Mental State Examination (MMSE). The trajectory analysis model was used to classify the subjects according to the changing trend of MMSE scores during the follow-up period. Taking different trajectory groups as dependent variables and serum UA as independent variables, multi-classification Logistic regression analysis was used to explore the effect of serum UA on cognitive function in patients with different types of AD after adjusting various confounding factors.
According to the trajectory model, the subjects were divided into three subgroups: cognitive sudden decline group, cognitive slow decline group, and cognitive stationary group. There was significant difference in serum UA among different trajectory subgroups (F=4.910, P=0.008). After adjusting for the influence of bio-behavioral-disease potential confounding factors, multi-classification Logistic regression found that serum UA was an independent risk factor for the outcome of cognitive slow decline group (cognitive slow decline group: OR=1.35, 95%CI: 1.03-1.77).With each increase of 10 mg/L in UA level, the risk of cognitive decline in AD patients in cognitive slow decline group was 35%higher than that in cognitive stable group. In the cognitive sudden decline group, there was no risk association between UA and cognitive function.
Compared with those with stable cognitive development, high level of serum UA is a risk factor for slow cognitive decline in patients with AD.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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