Objective: To investigate the relationship between fasting glucose levels, insulin resistance, and cognitive impairment in old age. Diabetes is associated with cognitive impairment in older people. However, the link between elevated fasting glucose levels and insulin resistance in nondiabetic individuals, and the risk of cognitive impairment is unclear.
Research Design And Methods: We analyzed data from, in total, 8,447 participants in two independent prospective studies: the PROspective Study of Pravastatin in the Elderly at Risk (PROSPER), 5,019 participants, aged 69-84 years, and the Rotterdam Study, 3,428 participants, aged 61-97 years. Fasting glucose levels were assessed at baseline in both studies; fasting insulin levels were assessed in the Rotterdam Study only. Cognitive function was assessed in both studies at baseline and during follow-up.
Results: Subjects with diabetes had impaired cognitive function at baseline. In contrast, in people without a history of diabetes, there was no clear association between baseline fasting glucose levels and executive function and memory, nor was there a consistent relationship between elevated baseline fasting glucose levels and the rate of cognitive decline in either cohort. Insulin resistance (homeostasis model assessment index) was also unrelated to cognitive function and decline.
Conclusions: Elevated fasting glucose levels and insulin resistance are not associated with worse cognitive function in older people without a history of diabetes. These data suggest either that there is a threshold for effects of dysglycemia on cognitive function or that factors other than hyperglycemia contribute to cognitive impairment in individuals with frank diabetes.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2889758 | PMC |
| http://dx.doi.org/10.2337/db09-0568 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Associations between stress hyperglycemia and outcomes in patients with ischemic stroke and TIA: the data comes from the Third China National Stroke Registry (CNSR-III).
Metab Brain Dis
January 2025
Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
In the acute stage of stroke, stress hyperglycemia is common in both diabetic and nondiabetic patients. The associations between stress hyperglycemia and functional outcomes, as well as stroke recurrence were heterogeneous in previous studies. We aimed to demonstrate these associations in a general population of patients with ischemic stroke and transient ischemic attack (TIA).
View Article and Find Full Text PDFDisrupting EDEM3-induced M2-like macrophage trafficking by glucose restriction overcomes resistance to PD-1/PD-L1 blockade.
Clin Transl Med
January 2025
Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.
Background: Immunotherapy is beneficial for some colorectal cancer (CRC) patients, but immunosuppressive networks limit its effectiveness. Cancer-associatedfibroblasts (CAFs) are significant in immune escape and resistance toimmunotherapy, emphasizing the urgent need for new treatment strategies.
Methods: Flow cytometric, Western blotting, proteomics analysis, analysis of public database data, genetically modified cell line models, T cell coculture, crystal violetstaining, ELISA, metabonomic and clinical tumour samples were conducted to assess the role of EDEM3 in immune escape and itsmolecular mechanisms.
Obesity-associated memory impairment and neuroinflammation precede widespread peripheral perturbations in aged rats.
Immun Ageing
January 2025
Institute for Behavioral Medicine Research, Ohio State University, 460 Medical Center Drive, Columbus, OH, 43210, USA.
Background: Obesity and metabolic syndrome are major public health concerns linked to cognitive decline with aging. Prior work from our lab has demonstrated that short-term high fat diet (HFD) rapidly impairs memory function via a neuroinflammatory mechanism. However, the degree to which these rapid inflammatory changes are unique to the brain is unknown.
View Article and Find Full Text PDFUltra-Processed Foods and Childhood Obesity: Current evidence and perspectives.
Curr Nutr Rep
January 2025
Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Str., 11527, Athens, Greece.
Purpose Of The Review: Ultra-processed foods (UPFs) represent foods that have undergone substantial industrial processing, such as the addition of preservatives and various other ingredients, thereby making them more tasty, appealing and easy to consume. UPFs are often rich in sugars, saturated fats and salt, while they are low in essential nutrients.The aim of this review is to examine the relationship between the widespread consumption of UPFs and the development of obesity among children and adolescents.
View Article and Find Full Text PDFAssociation between alcohol consumption and risk of type 2 diabetes in Japan: a population-base longitudinal cohort study.
Sci Rep
January 2025
Department of Radiology, Chongqing General Hospital, Chongqing University, Yubei District, Chongqing, 401147, China.
Heavy alcohol consumption is a known risk factor for type 2 diabetes (T2D), However, the moderating effect of fasting plasma glucose (FPG) levels remains unclear. This study explores the relationship between alcohol intake and T2D risk across FPG strata in a Japanese cohort. Data from 15,453 participants in the NAGALA cohort were analyzed over 5.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!