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Related Concept Videos

Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Bacterial Meningitis II: Pathophysiology01:26

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...
Bacterial Meningitis01:24

Bacterial Meningitis

Bacterial meningitis is a severe infectious disease involving inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It occurs when pathogenic bacteria cross the blood–brain barrier and enter the cerebrospinal fluid. Common causative organisms include Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae type b, Listeria monocytogenes, and Escherichia coli K1. The exact route of entry varies by pathogen and host condition.Routes of Entry...
Viral Meningitis01:18

Viral Meningitis

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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Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery
10:03

Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery

Published on: November 5, 2019

Animal models for meningococcal disease.

A R Gorringe1, K M Reddin, P Voet

  • 1Center for Applied Microbiology and Research, Salisbury, UK.

Methods in Molecular Medicine
|February 22, 2011
PubMed
Summary
This summary is machine-generated.

Animal models are crucial for studying meningococcal disease and evaluating vaccine effectiveness. Researchers must carefully consider how well these models represent human infections and predict vaccine protection in humans.

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Area of Science:

  • Microbiology and Immunology
  • Infectious Diseases
  • Vaccinology

Background:

  • In vitro systems are limited for studying complex host-pathogen interactions in meningococcal pathogenesis.
  • Animal models allow assessment of bacterial interactions with whole tissues and immune systems.
  • Evaluating vaccine efficacy requires robust models that mimic human disease.

Purpose of the Study:

  • To highlight the importance of animal models in meningococcal pathogenesis research.
  • To emphasize the role of animal models in assessing vaccine protective efficacy.
  • To underscore the need for critical evaluation of animal model relevance to human disease.

Main Methods:

  • Review of existing literature on animal models for pathogenic Neisseria.
  • Assessment of in vivo interactions between Neisseria meningitidis and host systems.
  • Evaluation of vaccine-induced protection in relevant animal infection models.

Main Results:

  • Animal models are indispensable for studying the full spectrum of meningococcal pathogenesis.
  • These models are vital for determining the efficacy of current and novel vaccines.
  • Previous reviews have addressed animal models for pathogenic Neisseria.

Conclusions:

  • Animal infection models are essential for understanding meningococcal disease and vaccine responses.
  • The translational relevance of animal models to human disease must be critically assessed.
  • Careful consideration is required when extrapolating findings from animal models to human outcomes.