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Isolating Central Nervous System Tissues and Associated Meninges for the Downstream Analysis of Immune cells
Published on: May 19, 2020
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Acute and prolonged complement activation in the central nervous system during herpes simplex encephalitis.
Charlotta E Eriksson1, Marie Studahl2, Tomas Bergström1
1Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Journal of Neuroimmunology
|May 29, 2016
Summary
Herpes simplex encephalitis (HSE) involves significant brain inflammation. This study found the complement system, a key immune pathway, remains highly active in HSE patients, even in later disease stages.
Area of Science:
- Neuroscience
- Immunology
- Infectious Diseases
Background:
- Herpes simplex encephalitis (HSE) is a severe neurological condition marked by intense brain inflammation.
- The role of the complement system, a crucial part of the immune system, in the prolonged inflammation of HSE is not fully understood.
Purpose of the Study:
- To investigate the acute and prolonged activity of the complement system in the central nervous system (CNS) of patients with Herpes simplex encephalitis.
- To determine specific complement components involved in the inflammatory process during HSE.
Main Methods:
- Enzyme-linked immunosorbent assays (ELISAs) were employed to quantify various complement components in cerebrospinal fluid (CSF).
- CSF samples from HSE patients (acute and later stages) were compared with those from healthy and patient controls.
Main Results:
- Elevated concentrations of C3a, C3b, C5, and C5a were observed in the CSF of HSE patients compared to healthy controls.
- C3a and C5a levels remained significantly increased in HSE patients even when compared to other patient controls, indicating sustained complement activation.
- These findings suggest complement system activation occurs during the acute phase and persists into later stages of HSE.
Conclusions:
- The complement system is demonstrably activated within the CNS during Herpes simplex encephalitis.
- Sustained activation of the complement system in later stages of HSE supports the concept of prolonged neuroinflammation in this condition.
- These results highlight the complement system as a potential therapeutic target for managing HSE and its long-term consequences.
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