缺血性卒中后认知功能障碍的患病率和危险因素

目的 明确卒中后认知功能障碍(PSCI)的患病率和危险因素.方法 526例缺血性卒中患者被分为无认知障碍、认知障碍非痴呆(CIND)和血管性痴呆(VaD),根据影像学表现,患者分为皮质下缺血性血管病、皮质型缺血性血管病和其他类型,登记患者人口学、血管危险凶素和卒中病情等.结果 PSCI患病率36.7%.与无认知障碍相比,PSCI患者年龄大、女性比例高、教育程度低、彳T侧瘫痪多、抑郁评分高,但血管危险因素无差别.与无认知障碍者相比,VaD者经济水平低、配偶照料少、失语多、尿失禁多、皮质型缺血性血管病多;CIND者则有较多的皮质下缺血性血管病.VaD者较CIND者皮质型缺血性血管病多、抑郁评分低.高龄、女性、低社会经济水平、失语、皮质下缺血性血管病、皮质型缺血性血管病和抑郁评分高为PSCI的独立危险因素.结论 PSCI常见于缺血性卒中患者,与人口学因素、卒中类型及抑郁有关.     

Cognitive impairment and sleep disturbances after minor ischemic stroke

Purpose

Post-stroke cognitive impairment (PSCI) is common among stroke survivors, although its risk factors are not well understood. Here, we assessed cognitive function in patients within 14 days after minor stroke and investigated the risk factors of PSCI, including sleep-related factors.

Methods

Patients with minor acute ischemic stroke (n?=?86) were continuously recruited from November 2015 to October 2016. Demographic and clinical data were collected, and cognitive assessment and polysomnography were performed. Based on their cognitive performance, stroke patients were divided into PSCI and no PSCI groups. Age-, sex-, and education-matched participants (n?=?36) were included as a healthy control (HC) group.

Results

Stroke patients showed impairments in multiple cognitive domains relative to HC participants (p?<?0.01). Among stroke patients, the prevalence of PSCI and obstructive sleep apnea was 81.4 and 74.4%, respectively. Impairments in attention and working memory (87.1%) and executive function (84.3%) were the most common among stroke patients. Compared with no PSCI patients, PSCI patients showed a higher prevalence of obstructive sleep apnea (50.0 vs. 80.0%, p?=?0.030) and shorter total sleep time (435.1?±?104.0 vs. 347.3?±?98.1 min, p?=?0.002). Logistic regression analysis showed that education duration, total sleep time, and lowest SaO₂ were independent risk factors for PSCI.

Conclusions

The prevalence of PSCI is high after minor ischemic stroke. In particular, attention and working memory and executive function are most commonly impaired. Although the risk factors for PSCI are numerous, shorter total sleep time and degree of hypoxia at night warrant further attention.

     

The relationship between a fish-rich diet and poststroke cognitive impairment: A cross-sectional study with a follow-up in China

Whether a fish-rich diet is positively associated with cognitive function after stroke remains unclear; thus, the present study investigated the relationship between them.The present study was part of a prospective multicenter study, in which 920 individuals (609 males, mean age, 62.78 ± 11.79 years) were included from November 2013 to December 2015. The cognitive function of the patients was evaluated, and the diagnosis of poststroke cognitive impairment (PSCI) was made during their stay in the hospital. A subgroup of 439 patients from a single center was followed up for 4 to 6 years and was reassessed for cognitive function.According to the diagnostic criteria, the PSCI prevalence was lower in the fish-rich diet group (P < .05). After adjusting for demographic and clinical variables by logistic regression, patients with a habit of consuming a fish-rich diet had a lower risk of developing PSCI than patients without a fish-rich diet (odds ratio [OR]: 0.74; 95% confidence interval [CI]: 0.46–0.95). When MMSE score was considered the cognitive function outcome variable, the long-term cognitive function of the fish-rich diet group was better (28 [26–30] vs 27 [25–29], P < .01), but the statistical results were not significant after correcting for the related confounding factors (β: 0.13; 95% CI: −0.99–1.25; P = .82).There was a negative relationship between consuming a fish-rich diet and the prevalence of PSCI, and there was no statistically significant difference in the relationship of a fish-rich diet on long-term cognitive function after stroke, which requires further study.     

Cognitive decline according to amyloid uptake in patients with poststroke cognitive impairment

Background and purpose:Poststroke cognitive impairment (PSCI) is common, but the impact of β-amyloid (Aβ) on PSCI is uncertain. The proposed study will investigate amyloid pathology in participants with PSCI and how differently their cognition progress according to the amyloid pathology.Methods:This multicenter study was designed to be prospective and observational based on a projected cohort size of 196 participants with either newly developed cognitive impairment, or rapidly aggravated CI, within 3 months after acute cerebral infarction. They will undergo ¹⁸F-flutemetamol positron emission tomography at baseline and will be categorized as either amyloid-positive (A+) or amyloid-negative (A−) by visual rating. The primary outcome measures will be based on Korean Mini-Mental State Examination changes (baseline to 12 months) between the A+ and A− groups. The secondary outcome measures will be the dementia-conversion rate and changes in the Korean version of the Montreal Cognitive Assessment (baseline to 12 months) between the A+ and A− groups.Conclusions:This study will provide a broadened perspective on the impact of Aβ on the cause and outcomes of PSCI in clinical practice. Identifying amyloid pathology in patients with PSCI will help select patients who need more focused treatments such as acetylcholinesterase inhibitorsTrial registration:Clinical Research Information Service identifier: KCT0005086     

Efficacy and safety of acupuncture combined with Chinese herbal medicine traditional Chinese medicine for poststroke cognitive impairment: A protocol for a systematic review and meta-analysis

Background:Poststroke cognitive impairment (PSCI) is often secondary to poststroke, which is common in stroke patients, induced difficulty in rehabilitation and seriously affects their quality of life. Currently, effective treatments are still limited. Researches show that acupuncture combined with traditional Chinese medicine (TCM) has a good effect on PSCI. However, there is no consistent conclusion at present. Therefore, THE purpose of this study is to assess the effectiveness and safety of acupuncture combined with TCM in the treatment of PSCI.Methods:We will search the following databases from inception to January, 2022: the Cochrane Library, PubMed, Embase, Medline, Web of Science, China National Knowledge Infrastructure, China Biology Medicine, Wan Fang data, and the Chinese Science and Technology Periodical Database. All randomized controlled trials eligible for acupuncture combined with TCM for PSCI will be included in this study. Study selection, data extraction, and quality assessment will be performed by 2 reviewers independently. Bias risk assessment and data synthesis will be performed using the Review Manager software (RevMan, version 5.3) and R (version 3.6.1) software.Results:We will synthesize the current studies to evaluate the effectiveness and safety of acupuncture combined with TCM in the treatment of PSCI.Conclusion:The systematic review will provide a new paradigm for acupuncture combined with TCM in the intervention of PSCI, and further provide scientific evidence for the efficacy and safety of acupuncture combined with TCM in the treatment of PSCI.Trial registration number:INPLASY202220062.     

急性缺血性卒中患者血压变异性与认知损害的相关性

目的：探讨血压变异性与急性缺血性卒中患者卒中后认知损害的相关性。方法纳入急性缺血性卒中住院患者,收集人口统计学和临床资料,计算发病7d内血压变异系数,在发病后3个月时采用蒙特利尔认知评估量表评价认知功能。采用多变量logistic回归分析确定发病7 d内血压变异系数与发病后3个月认知损害的关系。结果共纳入708例急性缺血性卒中患者。3个月随访时,510例（72.0％）存在认知损害,198例（28.0％）认知功能正常。认知损害组收缩期血压变异系数（8.3±1.2对8.7±1.4;t=－3.299,P=0.001）和舒张期血压变异系数（7.8±1.3对8.0±1.5;t=－2.529,P=0.012）均显著高于认知功能正常组。以第1五分位数组为参照,校正其他混杂因素后,多变量logistic回归分析显示,发病后3个月认知功能损害与7 d内收缩压变异系数显著相关,第2~5五分位数的优势比及95％可信区间分别为2.33（1.18~4.60）、2.31（1.15~4.66）、2.70（1.29~5.65）和4.82（1.92~12.1）（P均<0.05）。结论缺血性卒中急性期收缩压变异性与认知损害相关。     

Association of empty nest and group activity with cognitive impairment in Chinese older adults: A cross-sectional study

ObjectivesThis study explored the associations of empty nest and group activity with cognitive impairment in Chinese older adults.Materials and methodsData were analyzed from 10,349 participants of the second-round survey database of the Zhejiang Ageing and Health Cohort Study aged 60 years and over. Cognitive impairment was assessed by the Mini-Mental State Examination questionnaire. Logistic regression models controlled for an extensive range of potential confounders were generated to examine the associations of empty nest and group activity with cognitive impairment.ResultsNo association was found between empty nest and cognitive impairment in total participants. However, when stratified by sex, empty nest women were less likely to have cognitive impairment than non-empty nest women, odds ratio (OR) (95 % confidence interval [CI]) (0.846; 0.721, 0.993). Elders who participated in group activities showed significantly lower odds of cognitive impairment than those who never attended group activities, (0.811; 0.723, 0.910). This association remained significant in the 60–69-years group when further stratified by age, with an OR (95 % CI) of 0.616 (0.514, 0.739).ConclusionsEmpty nesters were not vulnerable to poor cognitive function. Participation in group activities was significantly associated with lower odds of cognitive impairment. Prospective studies are needed to assess the effect of empty nest and group activity on the risk of cognitive impairment.     

血清β2-微球蛋白联合脂蛋白相关磷脂酶A2与卒中后认知障碍的相关性研究

目的 探讨急性缺血性脑卒中(AIS)病人血清β2-微球蛋白(β2-MG)、脂蛋白相关磷脂酶A2(Lp-PLA2)与卒中后认知障碍的相关性.方法 收集陕西省人民医院神经内科住院的AIS病人,于入院后次日检测空腹血清β2-MG、Lp-PLA2、LDL-C、HDL-C等指标,常规治疗3个月后行MoCA量表评估,并根据评分将病...     

Serum Alkaline Phosphatase in Cryptogenic Stroke Cases with Active Cancer

Objective We assessed the relationship between the levels of serum alkaline phosphatase, which is often increased with biliary obstruction and bone metastasis, and active cancer in patients with cryptogenic stroke. Methods Serum alkaline phosphatase levels in patients with cryptogenic stroke sampled upon admission were measured using the Japan Society of Clinical Chemistry method used in Japan. Active cancer was defined as a new diagnosis, treatment, progression, or recurrence within six months before admission or metastatic cancer. Multivariate logistic regression analyses were performed to explore the relationship between serum alkaline phosphatase and active cancer in these patients. Results Among the 249 patients classified as having cryptogenic stroke, 64 had active cancer. Patients with cryptogenic stroke with active cancer had significantly higher serum alkaline phosphatase levels (486±497 vs. 259±88.2 U/L; p<0.001) than those without cancer. Multivariate logistic analysis revealed that serum alkaline phosphatase levels ≥286 U/L were associated with cryptogenic stroke with active cancer [odds ratio (OR), 2.669, 95% confidence interval (CI), 1.291-5.517; p=0.008] independent of age ≤70 years old (OR, 3.303, 95% CI, 1.569-6.994; p=0.002), male sex (OR, 0.806, 95% CI, 0.380-1.710; p=0.573), and serum D-dimer levels ≥2.6 μg/mL (OR, 18.78, 95% CI, 8.130-43.40; p<0.001). Conclusion In patients with cryptogenic stroke, high serum alkaline phosphatase levels may be related to active cancer.     

Cognitive impairment after stroke: clinical determinants and its associations with long-term stroke outcomes

OBJECTIVES: To identify factors that were associated with cognitive impairment 3 months after stroke, and to examine the associations of cognitive impairment with stroke outcomes up to 4 years after stroke. DESIGN: Observational study. SETTING: Population-based stroke register. PARTICIPANTS: Six hundred forty-five subjects with first-ever stroke, identified from the register. MEASUREMENTS: Subjects were assessed for cognition using the Mini-Mental State Examination (MMSE) 3 months after stroke. Cognitively impaired subjects (MMSE <24, n = 248 (38%)) were compared with cognitively intact subjects (MMSE 24-30, n = 397) in terms of demographic details, stroke risk factors, laterality of stroke, and initial poststroke impairments. Outcome data collected at 1, 3, and 4 years poststroke included disability assessed by the Barthel Index (BI) and the Frenchay Activity Index, case fatality, and institutionalization. RESULTS: Two hundred forty-eight (38%) of 645 subjects were cognitively impaired 3 months after stroke. Using multivariate analyses, cognitive impairment was associated with age of 75 and older (odds ratio (OR) = 2.5, 95% confidence interval (CI) = 1.5-4.2), ethnicity (Caribbean/African (OR = 1.9, 95% CI = 1.2-3.2) and Asian (OR = 3.4, 95% CI = 1.1-10.2), lower socioeconomic class (OR = 2.1, 95% CI = 1.3-3.3), left hemispheric lesion (OR = 1.6, 95% CI = 1.01-2.4), visual field defect (OR = 2.0, 95% CI = 1.2-3.2), and urinary incontinence (OR = 4.8, 95% CI = 3.1-7.3). Using multivariate analyses, cognitive impairment was associated with death or disability (BI <15) at 4 years after stroke (OR = 2.2, 95% CI = 1.1-4.5). In univariate analyses, it was also associated with higher institutionalization 4 years after stroke (P =.001). CONCLUSIONS: Cognitive impairment is common 3 months after stroke and is independently associated with older age, ethnicity, lower social class, left hemispheric stroke, visual field defect, and urinary incontinence. It is associated with poor long-term outcomes, including survival and disability, up to 4 years after stroke. Because physical and cognitive impairments after stroke have independent prognostic implications, measures that evaluate both functions should be used in future studies of stroke outcome and in care of stroke patients.     

Effects of glycemic variability and hyperglycemia in acute ischemic stroke on post-stroke cognitive impairments

Aims

We aimed to investigate the effect of glycemic variability in the acute stage of stroke on the development of post-stroke cognitive impairment (PSCI).

Pulse Pressure and Cognitive Decline in Stroke Patients With White Matter Changes

The authors hypothesized that both high and low pulse pressure (PP) may predict cognitive decline in stroke/transient ischemic attack (TIA) patients with white matter changes (WMCs). The authors prospectively followed up 406 ischemic stroke/TIA patients with confluent WMCs over 18 months. PP was measured at 3 to 6 months after stroke/TIA and categorized into four groups by quartile. Cognition was assessed 3 to 6 months and 15 to 18 months after stroke/TIA using the Clinical Dementia Rating and Mini‐Mental State Examination (MMSE). Logistic regression showed that patients in the first quartile of PP had a 5.9‐fold higher risk for developing cognitive decline than patients in the third quartile (odds ratio, 5.9; 95% confidence interval, 1.7–20.6), while patients in the fourth quartile had a 3.5‐fold higher risk for cognitive decline than those in the third quartile (odds ratio, 3.5; 95% confidence interval, 1.0–12.4). This U‐shaped relationship was also evident between PP and cognitive decline in MMSE, underlining the role of arterial stiffness and hypoperfusion in cognitive decline related to small vessel disease.     

卒中患病时间对老年人群认知功能的影响

目的分析卒中患病时间对北京市老年人群认知功能的影响。方法基于北京市慢病合并常见老年综合征社区管理规范研究课题,采用横断面研究方法,自2013年7月至2014年12月通过多阶段、随机、分层的抽样方法对北京市4个区县(西城区、房山区、通州区、延庆县)的老年人群进行抽样,共纳入研究对象3 024名。采用问卷调查和临床检查获取数据,以简易精神状态检查量表(MMSE)评分为认知功能的评价指标,依据MMSE量表评分情况,将研究对象分为认知功能正常组(MMSE26分,1 878名)和认知功能障碍组(MMSE≤26分,1 146例)。采用多因素Logistic回归模型分析出血性卒中、缺血性卒中及无症状卒中的患病情况及患病时间对认知功能的影响。结果经校正性别、年龄、受教育程度、婚姻、吸烟、饮酒等混杂因素后,患病1~3年、4~1 0年、1 0年的出血性卒中患者发生认知功能障碍的风险分别为未发生卒中人群的3.019(95%CI:0.974~9.361,P=0.056)、8.652(95%CI:2.924~25.601,P0.01)、1.104倍(95%CI:0.311~3.920,P=0.879);患病1~3年、4~10年、10年的缺血性卒中患者发生认知功能障碍的风险分别为未发生卒中人群的1.000(95%CI:0.636~1.571,P=1.000)、1.874(95%CI:1.231~2.853,P=0.003)、2.439倍(95%CI:1.386~4.291,P=0.002)。出血性卒中患者患病4~10年及缺血性卒中患者患病4~10年、10年均为认知功能障碍发生的危险因素。结论对于卒中患者,卒中患病时间或长期效应对认知功能有一定影响。     

Pituitary-thyroid axis, prolactin and growth hormone in patients with acute stroke

The pituitary-thyroid axis, serum prolactin and growth hormone levels were studied in 29 patients within 9 d of onset of acute ischaemic stroke. When compared to a control group of 80-year-old volunteers (n = 33), stroke patients were found to have elevated free thyroxine indices (P = 0.008), after adjustment for age and sex. Seventeen (81%) of the stroke patients showed a paradoxical rise in growth hormone in response to thyrotropin releasing hormone (TRH). In a multiple regression model, disorientation was associated with a low thyrotropin response to TRH (P = 0.02 and P = 0.04; 20 and 60 min after TRH, respectively). Disorientation was also positively correlated with the prolactin response to TRH (P = 0.045 after 60 min). Growth hormone levels were predicted by extensive motor impairment (P = 0.02). In conclusion, changes in pituitary and thyroid hormones were commonly observed after stroke and were closely associated with cognitive and/or motor impairment.     

Serum uric acid levels and risk for acute ischaemic non-embolic stroke in elderly subjects

BACKGROUND. Elevated serum uric acid (SUA) levels have been proposed as an independent risk factor for cardiovascular (CV) morbidity and mortality. Recent evidence suggests that treatments with a hypouricaemic action have a favourable effect on CV event prevention. OBJECTIVES. The association between SUA and acute ischaemic/non-embolic stroke was assessed in a population-based case-control study in the prefecture of Ioannina, Epirus, Greece. SUBJECTS AND METHODS. A total of 163 patients aged older than 70 years (88 men and 75 women) admitted due to a first-ever-in-a-lifetime acute ischaemic/non-embolic stroke and 166 volunteers (87 men and 79 women) without a history of CV disease were included. The association between SUA and stroke was determined by multivariate logistic regression modelling after adjusting for potential confounding factors. RESULTS. Stroke patients showed higher concentrations of SUA compared with controls (333.1+/-101.1 micromol L(-1) vs. 285.5+/-83.3 micromol L(-1); P<0.001). In univariate analysis elevated SUA levels were associated with increased risk for ischaemic stroke [odds ratio (OR) 1.42, 95% confidence interval (CI) 1.21-1.64, P<0.0001]. Compared to patients with SUA levels in the lowest quintile, those within the highest quintile had a 2.8-time increase in the odds of suffering an ischaemic stroke (OR 2.81, 95% CI 1.67-4.73, P<0.001). This association was strong even after controlling for gender, age, body mass index, the presence of hypertension and diabetes mellitus, drug treatment and lipids (OR 2.90, 95% CI 1.59-5.30, P=0.001). CONCLUSION. Elevated SUA is associated with an increased risk for acute ischaemic/non-embolic stroke in a strictly defined population of elderly individuals independently of concurrent metabolic derangements. This association may need to be considered when treating the elderly.     

Effect of acupuncture treatment on post-stroke cognitive impairment: A randomized controlled trial

Introduction:Post-stroke cognitive impairment (PSCI), which has a high morbidity, is closely associated with the recurrence and rehabilitation of ischemic stroke. There are 2 different stages of PSCI, including post-stroke cognitive impairment with no dementia (PSCIND) and post-stroke dementia (PSD). The latter has a significantly higher mortality rate than the previous one. Therefore, preventing the onset of PSD is of vital importance. However, there is no unequivocally effective prevention or treatment for PSCI, except intensive secondary prevention of stroke. The primary aim of this protocol is to explore whether acupuncture can improve cognitive function of patients with PSCIND and reduce the chances of developing PSD. On this bias, we also want to explore its possible mechanisms.Methods and analysis:A prospective, multicenter, large sample, randomized controlled trial will be conducted. A total of 360 eligible patients will be recruited from 5 different hospitals and randomly allocated into the acupuncture group (AG), sham acupuncture group (NAG), and waiting-list group (WLG) in a 1:1:1 ratio. The intervention period of NAG and AG will last 3 months (30 minutes per day, 3 times per week). Primary and secondary outcomes will be measured at baseline, 12 weeks (at the end of the intervention), 24 weeks (after the 12-week follow-up period), and 36 weeks (after the 24-week follow-up period). Resting-state and task-state functional MRI will be conducted at baseline and 12 weeks.Ethics and dissemination:The ethic committee of First Teaching Hospital of University of Traditional Chinese Medicine approved the study. Study results will be first informed to each participant and later disseminated to researchers, and the general public through courses, presentations and the internet, regardless of the magnitude or direction of effect. The results will also be documented in a published peer-reviewed academic journal.Registration:We have registered at ClinicalTrials.gov(ChiCTR2000033801).     

Acupuncture-related therapies for the poststroke cognitive impairment patients: A protocol for systematic review and network meta-analysis

Background:To compare and rank the clinical effects of different acupuncture and acupuncture-related therapies on patients with poststroke cognitive impairment.Methods:We evaluated the direct and indirect evidence from relevant studies using network meta-analysis. Eight databases were examined in order to find randomized controlled trials of acupuncture-related therapies for individuals with poststroke cognitive impairment. After 2 researchers independently scanned the literature, extracted the data, and assessed the risk of bias in the included studies, the data were analyzed using RevMan5.4, Stata15.0, and WinBUGS1.4.3 software.Results:We assess the benefits and drawbacks of various acupuncture-related therapies, rank the efficacy of various acupuncture-related therapies in the treatment of poststroke cognitive impairment, and describe the best acupuncture intervention approaches or combinations based on the available data.Conclusion:This study will contribute to the existence of data on the safety and efficacy of acupuncture-related therapies in the treatment of poststroke cognitive impairment, and it may aid clinical guideline makers in selecting the best acupuncture treatment for poststroke cognitive impairment.Registration Number:INPLASY2021120117.     

Low and high circulating cortisol levels predict mortality and cognitive dysfunction early after stroke

OBJECTIVE: Elevated cortisol levels are associated with confusion and poor outcome after stroke. Dehydroepiandrosterone sulphate (DS), the most abundant adrenal androgen may act as an anti-glucocorticoid. An altered regulation of these steroids may affect numerous brain functions, including neuronal survival. The purpose of this study was to investigate serum cortisol and DS levels and the cortisol/DS ratio early after stroke and relate our findings to the presence of disorientation and mortality. DESIGN: Patients with acute ischaemic stroke (n = 88, 56 men and 32 women) admitted to a stroke unit were investigated with repeated clinical assessments and scores for degree of confusion, extent of paresis and level of functioning. Serum cortisol (C) and DS were measured on day 1 and/or day 4. Data for 28-day and 1-year mortality are presented. A control group of 65 age-matched healthy individuals was used. Multivariate analyses of mortality rates in the different tertiles or sixtiles of serum cortisol were performed with logistic regression, adjusting for age, sex, diabetes and level of consciousness. RESULTS: There was no difference in serum cortisol levels on day 1 for stroke patients when compared with control group values. Initial cortisol levels were significantly higher in the patients with acute disorientation versus orientated patients (P < 0.05). Cortisol levels on day 1 were an independent predictor of 28-day mortality, and patients with low cortisol levels (<270 nmol L(-1)) and increased levels (>550 nmol L(-1)) both had an increased 1-year mortality. DS levels on day 1 were significantly elevated in stroke patients. CONCLUSION: Hypercortisolism is associated with cognitive dysfunction early after ischaemic stroke. High and low circulating cortisol levels are associated with increased mortality after stroke. DS levels were not associated with clinical outcome.     

Albumin, Apolipoprotein E-ɛ4 and Cognitive Decline in Community-Dwelling Chinese Older Adults

OBJECTIVES: To examine the association between serum albumin and cognitive impairment and decline in community-living older adults.
DESIGNS: Population-based cohort study, followed up to 2 years; serum albumin, apolipoprotein E (APOE)-ɛ4, and cognitive impairment measured at baseline and cognitive decline (≥2-point drop in Mini-Mental State Examination (MMSE) score). Odds ratios were controlled for age, sex, education, medical comorbidity, hypertension, diabetes mellitus, cardiac disease, stroke, smoking, alcohol drinking, depression, APOE-ɛ4, nutritional status, body mass index, anemia, glomerular filtration rate, and baseline MMSE.
SETTINGS: Local area whole population.
PARTICIPANTS: One thousand six hundred sixty-four Chinese older adults aged 55 and older.
RESULTS: The mean age of the cohort was 66.0±7.3, 65% were women, mean serum albumin was 42.3±3.1 g/L, and mean MMSE score was 27.2±3.2. Lower albumin tertile was associated with greater risk of cognitive impairment in cross-sectional analysis (low, odds ratio (OR)=2.30, 95% confidence interval (CI)=1.31–4.03); medium, OR=1.59, 95% CI=0.88–2.88) versus high ( P for trend=.002); and with cognitive decline in longitudinal analyses: low, OR=1.73, 95% CI=1.18–2.55; medium, OR=1.32, 95% CI=0.89–1.95, vs high ( P for trend=.004). In cognitively unimpaired respondents at baseline (MMSE≥24), similar associations with cognitive decline were observed ( P for trends <.002). APOE-ɛ4 appeared to modify the association, due mainly to low rates of cognitive decline in subjects with the APOE-ɛ4 allele and high albumin.
CONCLUSION: Low albumin was an independent risk marker for cognitive decline in community-living older adults.     

75岁以上老年人轻度认知损伤及危险因素的现况调查

目的　探讨 75岁以上老年人轻度认知损伤 (mildcognitiveimpairment,MCI)的发生及其危险因素。方法　通过简短智力状态检查 (MMSE)对 311例 75岁以上非痴呆男性的认知功能进行评价 ,并调查了脑卒中、冠心病、高血压病、糖尿病、意识丧失等因素。结果　 75岁以上老年人MCI的患病率为 14 .8% ,多元线性回归分析显示脑卒中、意识丧失和年龄与MMSE成绩呈负相关 (P <0 .0 5 )。经多元logistic回归分析 ,有意识丧失、脑卒中病史者患MCI的优势比分别是 10 .7(95 %CI:4 .1～ 2 8.1)和 2 .3(95 %CI:1.0～ 5 .2 )。结论　意识丧失、脑卒中是 75岁以上老年人MCI的危险因素 ,血管性因素可加重脑老化所致的认知功能损伤