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Assessment of Age-related Changes in Cognitive Functions Using EmoCogMeter, a Novel Tablet-computer Based Approach
Published on: February 14, 2014
Serum leptin levels are associated with cognitive function in older adults
John Gunstad1, Mary Beth Spitznagel, Therese A Keary
1Department of Psychology, Kent State University, Kent, OH 44242, USA. jgunstad@kent.edu
Brain Research
|August 5, 2008
Summary
Higher leptin hormone levels correlate with reduced executive function in older adults. This finding suggests leptin may play a role in age-related cognitive decline, warranting further investigation into potential interventions.
Area of Science:
- Neuroscience
- Endocrinology
- Gerontology
Background:
- Leptin, a hormone secreted by adipose tissue, is increasingly implicated in age-related cognitive decline.
- Understanding the relationship between leptin and cognitive function in aging is crucial for identifying potential therapeutic targets.
Purpose of the Study:
- To investigate the association between serum leptin levels and cognitive performance in a cohort of older adults.
- To determine if leptin levels correlate with specific domains of cognitive function, particularly executive function.
Main Methods:
- A cross-sectional study involving 35 older adults (mean age 73.69 years) without significant neurological or psychiatric history.
- Fasting blood samples were collected to measure serum leptin levels.
- Participants completed a neuropsychological test battery, including measures of executive function like the Trail Making Test B.
Main Results:
- Higher serum leptin levels were significantly associated with poorer performance on the Trail Making Test B, a measure of speeded executive function (r = .46, p = .01).
- These results remained significant after adjusting for demographic and relevant medical factors.
Conclusions:
- Serum leptin levels are negatively associated with executive function in healthy older adults.
- The findings suggest a potential role for leptin in the mechanisms underlying age-related cognitive decline.
- Further research is needed to elucidate the causal pathways and explore potential leptin-targeted interventions for cognitive aging.
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