Viral loads of cerebrospinal fluid in infants with enterovirus meningitis

Hisashi Kawashima1, Hiroaki Ioi, Chiako Ishii

  • 1Department of Paediatrics, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, Japan. hisashi@tokyo-med.ac.jp

Insights

In infants with enterovirus meningitis, high levels of interleukin-6 (IL-6) and free radicals in cerebrospinal fluid (CSF) indicate early disease. These markers aid in timely diagnosis and treatment of viral meningitis.

Area of Science:

  • Pediatric infectious diseases
  • Neurovirology
  • Biomarker research

Background:

  • Viral meningitis is a significant concern in infants.
  • Understanding the early pathogenesis of enterovirus meningitis is crucial for effective management.
  • Cerebrospinal fluid (CSF) analysis is key for diagnosing central nervous system infections.

Observation:

  • Infants under 1 year with enterovirus meningitis were studied.
  • Initial CSF analysis revealed elevated interleukin-6 (IL-6) and free radicals.
  • Pleocytosis was infrequently observed in early stages.
  • IL-6 levels decreased rapidly over a short period.

Findings:

  • Viral load and free radical levels in CSF increased concurrently.
  • Simultaneous elevation of viral load and free radicals suggests a dynamic disease process.
  • Elevated IL-6 and free radicals are prominent early indicators.

Implications:

  • CSF IL-6 and free radicals serve as valuable early diagnostic biomarkers for viral meningitis.
  • These biomarkers can guide prompt therapeutic interventions in infants.
  • Further research into the interplay of viral load, cytokines, and oxidative stress is warranted.

Related Concept Videos

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...
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
Poliomyelitis01:17

Poliomyelitis

Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...
Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
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...
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...