社区老年人群空腹血糖受损与认知功能障碍的相关性研究

Association between impaired fasting glucose and cognitive impairment in community elderly residents

目的探讨老年社区人群空腹血糖受损(IFG)与认知功能障碍的相关性。方法采用横断面调查研究方法,选择2010年6月~2011年7月年龄≥60岁老年人1223例,根据空腹血糖水平分为空腹血糖正常(NFG)组981例和IFG组242例,采集受试者基线资料,采用简易智能状态检查量表(MMSE)评分进行认知功能评估。结果 IFG组受教育程度、BMI、空腹血糖、TG、LDL-C水平、高血压及高脂血症比例明显高于NFG组,而HDL-C水平明显低于NFG组,差异有统计学意义(P<0.05,P<0.01)。与NFG组比较,IFG组认知功能障碍患病率(40.50%vs21.51%,P=0.000)明显升高,MMSE评分[(24.76±5.38)分vs(26.60±4.26)分,P=0.000]、定向力评分[(9.07±1.81)分vs(9.48±1.15)分,P=0.000]、注意力及计算力评分[(3.39±2.00)分vs(3.88±1.81)分,P=0.000]、即刻回忆能力评分[(2.93±0.41)分vs(2.98±0.24)分,P=0.000]和语言能力评分[(6.74±1.51)分vs(7.18±1.15)分,P=0.005]明显降低。年龄(95%CI:1.165~1.257,P=0.000)、女性(95%CI:1.151~2.818,P=0.010)、LDL-C(95%CI:1.887~5.251,P=0.022)、IFG(95%CI:1.794~3.893,P=0.000)为老年人认知功能障碍的危险因素,受教育年限为其保护性因素(95%CI:0.636~0.735,P=0.000)。结论 IFG是老年人认知功能障碍的独立危险因素,早期诊断和干预可能改善老年人的认知功能。

Objective To study the association between impaired fasting glucose（IFG）and cognitive impairment in community elderly residents.Methods A total of≥60 years old 1223 people were divided into normal fasting glucose（NFG）group（n=981）and IFG group（n=242）.Their baseline data were recorded,their cognitive function was assessed according to the MMSE score.Results The education level,BMI,serum FBG,TG,LDL-C levels,incidence of hypertension and hyperlipidemia were significantly higher while the serum HDL-C level was significantly lower in IFG group than in NFG group（P〈0.05,P〈0.01）.The incidence of cognitive impairment was significantly higher while the score of MMSE,orientation,attention and calculation,immediate recall and language was significantly lower in IFG group than in NFG group（40.50%vs 21.51%,24.76±5.38 vs 26.60±4.26,9.07±1.81 vs 9.48±1.15,3.39±2.00 vs 3.88±1.81,2.93±0.41 vs 2.98±0.24,6.74±1.51 vs 7.18±1.15,P〈0.01）.Age,female sex,LDL-C and IFG were risk factors for cognitive impairment in the elderly（P〈0.01,P〈0.05）while the education level was aprotective factor for cognitive impairment in the elderly（P=0.000）.Conclusion IFG is an independent risk factor for cognitive impairment in the elderly.Early diagnosis and intervention can improve cognitive function in the elderly.