Related Experiment Video
Updated: Jul 3, 2026
09:46
Rat Model of Widespread Cerebral Cortical Demyelination Induced by an Intracerebral Injection of Pro-Inflammatory Cytokines
Published on: September 21, 2021
Cerebrospinal fluid interleukin-6 in progressive Neuro-Behçet's syndrome
S Hirohata1, K Isshi, H Oguchi
1Second Department of Internal Medicine, Teikyo University School of Medicine, Tokyo, Japan.
Clinical Immunology and Immunopathology
|January 1, 1997
Summary
Elevated cerebrospinal fluid (CSF) interleukin-6 (IL-6) activity indicates chronic central nervous system (CNS) inflammation in neuro-Behçet's syndrome (NB), driving progressive neurological symptoms.
Area of Science:
- Neurology
- Immunology
- Inflammation
Background:
- Behçet's disease (BD) can cause serious central nervous system (CNS) complications, known as neuro-Behçet's syndrome (NB).
- Understanding the inflammatory mechanisms in NB is crucial for managing progressive neurological disease.
Purpose of the Study:
- To investigate the role of cerebrospinal fluid (CSF) interleukin-6 (IL-6) activity in the pathogenesis of progressive NB.
- To correlate CSF IL-6 levels with clinical disease activity and other CSF parameters.
Main Methods:
- Collected paired CSF and serum samples from 11 patients with progressive NB and 11 controls with active BD but no CNS involvement.
- Measured IL-6 levels in CSF and serum using an IL-6-dependent murine hybridoma cell line (MH60.BSF2).
Main Results:
- Markedly elevated CSF IL-6 activity was observed in all 11 progressive NB patients (mean +/- SD: 1.19 +/- 1.18 U/ml), significantly higher than controls (<0.010 U/ml).
- No significant difference in serum IL-6 levels was found between progressive NB and control groups.
- CSF IL-6 activity did not correlate with serum IL-6, CSF cell counts, total protein, or CSF/serum albumin quotient.
Conclusions:
- Enhanced IL-6 production within the CNS is a key factor in the chronic inflammation associated with progressive NB.
- CSF IL-6 levels serve as a potential biomarker for CNS inflammation in neuro-Behçet's syndrome.
Related Concept Videos
01:21Cerebrospinal Fluid
Cerebrospinal fluid (CSF) is a colorless liquid that flows around the brain and the spinal cord, playing a vital role in the protection, support, and overall function of the central nervous system (CNS). CSF production, circulation, and absorption are tightly regulated processes essential for the brain and spinal cord to function properly.
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain.
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain.
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...
01:19Encephalitis l: Introduction
Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
01:26Encephalitis ll: Pathophysiology
Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
01:29Increased Intracranial Pressure ll: Pathophysiology
Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...
01:22Cerebral Edema ll: Pathophysiology
Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...