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Related Concept Videos

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...
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
Myasthenia Gravis: Diagnostic Tests01:15

Myasthenia Gravis: Diagnostic Tests

Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...
Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...

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Related Experiment Videos

Elevated serum inflammatory markers in post-poliomyelitis syndrome.

Christopher B Fordyce1, Donald Gagne, Farzaneh Jalili

  • 1Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, Quebec, Canada.

Journal of the Neurological Sciences
|May 14, 2008
PubMed
Summary

Serum levels of tumor necrosis factor-alpha (TNFalpha), interleukin-6 (IL-6), and leptin are elevated in post-poliomyelitis syndrome (PPS) patients. Increased TNFalpha is linked to greater muscle pain in PPS.

Related Experiment Videos

Area of Science:

  • Neuroimmunology
  • Inflammatory Diseases
  • Post-infectious Syndromes

Background:

  • Post-poliomyelitis syndrome (PPS) is a neurological condition affecting polio survivors.
  • The underlying mechanisms of PPS remain largely unknown, with abnormal inflammatory responses suggested by preliminary research.

Purpose of the Study:

  • To investigate elevated serum inflammatory markers, including tumor necrosis factor-alpha (TNFalpha), interleukin-1 beta (IL-1beta), interleukin-6 (IL-6), and leptin, in PPS patients compared to healthy controls.
  • To determine associations between these inflammatory markers and clinical features of PPS, such as muscle strength, fatigue, and pain.

Main Methods:

  • Serum levels of inflammatory markers were quantified using Luminex technology in 51 PPS patients and 26 healthy controls.
  • Clinical assessments included disease duration, muscle strength (Medical Research Council sumscore), fatigue (Fatigue Severity Scale, Multidimensional Fatigue Inventory), and pain (visual analog scale).

Main Results:

  • Significantly higher levels of TNFalpha, IL-6, and leptin were observed in PPS patients compared to controls (p=0.03, p=0.03, p=0.01, respectively).
  • Elevated TNFalpha levels correlated with increased overall pain (r=0.36) and specifically with muscle pain (r=0.38) in PPS patients.
  • No significant correlations were found between inflammatory markers and joint pain, muscle strength, fatigue, or disease duration.

Conclusions:

  • Serum concentrations of TNFalpha, IL-6, and leptin are demonstrably increased in individuals with post-poliomyelitis syndrome.
  • Elevated TNFalpha is specifically associated with heightened muscle pain experienced by PPS patients, suggesting a role in pain pathogenesis.