Related Experiment Videos
Elevated circulating tumor necrosis factor levels in Alzheimer's disease
1Ritter Department of Geriatrics and Adult Development, Fishberg Center for Neurobiology, New York, NY.
Neuroscience Letters
|August 19, 1991
Summary
Alzheimer's disease (AD) is linked to inflammation. Researchers found elevated tumor necrosis factor alpha (TNF-alpha) in AD patients, suggesting it may indicate disease activity.
Area of Science:
- Neuroscience
- Immunology
- Biochemistry
Background:
- Alzheimer's disease (AD) involves a local inflammatory response, characterized by microglia and cytokine involvement.
- Systemic manifestations like weight loss are observed in AD patients.
Purpose of the Study:
- To measure serum levels of tumor necrosis factor alpha (TNF-alpha) in AD patients and age-matched controls.
- To investigate the potential role of circulating TNF-alpha as a marker for AD-related inflammation.
Main Methods:
- Enzyme-linked immunoassay (ELISA) was used to quantify TNF-alpha levels.
- A cytotoxicity bioassay was employed to assess TNF-alpha activity.
Main Results:
- Significantly elevated levels of TNF-alpha were detected in the sera of AD patients compared to controls.
- Circulating TNF-alpha levels correlated with the inflammatory processes in the central nervous system (CNS) of AD patients.
Conclusions:
- Elevated circulating TNF-alpha may originate from CNS inflammation in AD.
- Circulating TNF-alpha could potentially serve as a biomarker for AD inflammatory activity, particularly when other TNF-elevating conditions are absent.