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Cognitive Decline in Chronic Inflammatory Conditions: Exploring Links Between Systemic Inflammation and

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Summary

Chronic inflammation increases neurodegenerative disease risk through mechanisms like blood-brain barrier disruption and cytokine toxicity. Early detection and targeted therapies, including immunomodulation and glycemic control, are crucial for preventing cognitive decline.

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autoimmune diseaseschronic inflammationcognitive declineneurodegenerationsystemic inflammatory markers

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Area of Science:

  • Neuroscience
  • Immunology
  • Chronic Diseases

Background:

  • Chronic inflammatory diseases (CIDs) like rheumatoid arthritis, obesity, and type 2 diabetes mellitus are established risk factors for neurodegenerative diseases such as Alzheimer's and Parkinson's disease.
  • Systemic inflammation's complex role in neurodegeneration involves disrupted blood-brain barrier, microglial activation, and cytokine-induced neurotoxicity.

Purpose of the Study:

  • To review and synthesize evidence on the association between systemic inflammation and neurodegeneration.
  • To elucidate key mechanisms linking CIDs to neurodegenerative outcomes.
  • To discuss disease-specific correlations and emerging biomarkers for early detection and therapeutic strategies.

Main Methods:

  • Systematic review of longitudinal cohort studies and clinical trials.
  • Analysis of mechanisms including blood-brain barrier integrity, neuroinflammation, and metabolic dysregulation.
  • Examination of disease-specific associations and novel biomarker data (GFAP, NfL).

Main Results:

  • Contrasting evidence exists: rheumatoid arthritis shows genetic protection against Parkinson's but increased Alzheimer's risk.
  • Obesity and type 2 diabetes consistently correlate with cognitive decline.
  • Autoimmune diseases like SLE and FM exacerbate dementia risk via neuroinflammation and central sensitization.

Conclusions:

  • Early detection using biomarkers like GFAP and NfL requires further validation.
  • Therapeutic strategies should focus on immunomodulation, glycemic control, and lifestyle interventions, targeting non-amyloid pathways.
  • Future research should prioritize longitudinal studies, multi-omics, and clinical trials for precision treatment in preventing neurodegeneration.