Almost every week there is news about leptin. This small peptide hormone discovered about 12 years ago is still looking for a disease it can cure or prevent. In the past leptin has been promoted as a cure for aging, help with weight loss, improving depression, increasing libido and cognition. Now there is news that fat hormone may help prevent Alzheimer’s dementia (AD).
Said Dr Sudha Seshadri, an associate professor of neurology at the Boston University School of medicine, "Hopefully, in 10 or 15 years this may be one of many agents that we use to reduce the risk of Alzheimer's disease. Or it may be one of many markers that we measure in combination to predict risk.”
Dr Seshadri added, “But many more studies of different population groups are needed to determine whether leptin can play such a pivotal role in predicting the risk of Alzheimer's. There has been some data relating body weight to the risk of Alzheimer's disease. When we looked at animal studies, we found some data to indicate that leptin not only produces a feeling of satiety but also has a beneficial effect on the hippocampus. It was important to see if that was true in humans."
In the present study, 198 patients had MRI scans that calculated brain volume an average of 7.7 years after leptin was measured. The researchers also kept a lookout for all new patients diagnosed with AD among the study participants.
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