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Related Concept Videos

Multiple Sclerosis l: Introduction01:19

Multiple 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...
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Encephalitis 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...
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Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
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Bacterial 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...
Encephalitis l: Introduction01:19

Encephalitis 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...
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Related Experiment Video

Updated: May 25, 2026

Isolating Central Nervous System Tissues and Associated Meninges for the Downstream Analysis of Immune cells
09:35

Isolating Central Nervous System Tissues and Associated Meninges for the Downstream Analysis of Immune cells

Published on: May 19, 2020

Multiple sclerosis: a chronic infective cerebrospinal venulitis?

P K Thibault1

  • 1elprado@bigpond.com

Phlebology
|January 14, 2012
PubMed
Summary

Multiple sclerosis (MS) may stem from an infectious venulitis, not congenital venous malformations. This infectious cause, potentially Chlamydophila pneumoniae, affects cerebrospinal veins and aligns better with MS epidemiology.

Area of Science:

  • Neurology
  • Vascular Biology
  • Infectious Diseases

Background:

  • The link between chronic cerebrospinal venous insufficiency (CCSVI) and multiple sclerosis (MS) is debated.
  • Congenital venous malformations are a proposed cause of CCSVI in MS, but this doesn't fit MS epidemiology or imaging findings.
  • A venous etiology for MS remains plausible based on historical and accumulating evidence.

Purpose of the Study:

  • To review existing literature on vascular, venous, hematological, epidemiological, biochemical, and genetic aspects of MS.
  • To propose a novel hypothesis for the venous pathology in MS, focusing on an infectious origin.
  • To provide a framework for future research into the venous etiology of MS.

Main Methods:

  • Systematic literature search of PubMed using keywords related to MS investigations and treatments.

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  • Analysis of epidemiological and geographical data on MS prevalence.
  • Review of studies on vascular, venous, hematological, biochemical, and genetic factors in MS.

    • Main Results:

    • Epidemiological and geographical MS data suggest an infectious agent's involvement.
    • A hypothesis is presented where Chlamydophila pneumoniae initiates a chronic venulitis in the cerebrospinal venous system.
    • This venulitis spreads via lymphatics to major veins (azygos, jugular, vertebral), potentially causing MS pathology.

    Conclusions:

    • The proposed infectious venulitis hypothesis aligns with known MS pathogenesis, offering an alternative to congenital malformations.
    • This framework supports further research into infectious venous vasculitis as a cause of MS.
    • If correct, MS treatment may require more than angioplasty, addressing the underlying infection.