Related Experiment Video
Updated: Jun 5, 2026
06:39
Sub-acute Cerebral Microhemorrhages Induced by Lipopolysaccharide Injection in Rats
Published on: October 17, 2018
Systemic inflammation is associated with MCI and its subtypes: the Sydney Memory and Aging Study
Julian N Trollor1, Evelyn Smith, Bernhard T Baune
1Department of Developmental Disability Neuropsychiatry, University of New South Wales, 34 Botany Road, Sydney, NSW 2052, Australia. j.trollor@unsw.edu.au
Dementia and Geriatric Cognitive Disorders
|January 22, 2011
Summary
Systemic inflammation is linked to mild cognitive impairment (MCI) subtypes. Specific inflammatory markers like tumor necrosis factor-alpha (TNF-α) and serum amyloid A (SAA) were elevated in MCI patients, with variations across MCI types and sexes.
Area of Science:
- Neuroscience
- Immunology
- Gerontology
Background:
- Systemic inflammation is implicated in dementia development.
- Preliminary evidence suggests a link between inflammation and mild cognitive impairment (MCI).
Purpose of the Study:
- To investigate the relationship between systemic inflammation and various subtypes of MCI.
- To identify specific inflammatory markers associated with different MCI classifications.
Main Methods:
- Analysis of inflammatory markers including C-reactive protein, interleukins (IL)-1β, -6, -8, -10, -12, plasminogen activator inhibitor-1 (PAI-1), serum amyloid A (SAA), tumor necrosis factor-α (TNF-α), and vascular adhesion molecule-1 (VCAM-1).
- Utilized data from the Sydney Memory and Ageing Study (MAS), a longitudinal study of 1,037 Australians aged 70-90 years.
Main Results:
- Elevated levels of TNF-α and SAA were observed in individuals with MCI compared to cognitively normal participants.
- Nonamnestic multiple domain MCI showed higher levels of IL-1β, IL-12, TNF-α, and SAA compared to other MCI subtypes and cognitively normal individuals.
- PAI-1 levels differed between MCI subtypes, being higher in cognitively normal and nonamnestic multiple domain MCI than in amnestic multiple domain MCI.
Conclusions:
- Specific inflammatory markers are associated with distinct MCI subtypes.
- The study highlights potential sex differences in the inflammatory markers linked to MCI.
- Findings suggest a targeted impact of systemic inflammation on cognitive function in older adults.
More Related Videos
Related Concept Videos
01:12Chronic Inflammation: Introduction
Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
01:22Dementia l: Introduction
Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
01:19Psychoneuroimmunology: Diabetes and Cancer
Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
01:19Multiple Sclerosis l: Introduction
Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
01:29Alzheimer Disease l: Introduction
Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
01:26Bacterial Meningitis II: Pathophysiology
Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...