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Related Concept Videos

Inflammatory Response I: Vascular and Cellular01:30

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The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...
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Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...
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Myocarditis I: Introduction01:21

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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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Inflammatory Response01:28

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An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
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The pathophysiology of pneumonia involves the following steps:
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Updated: Sep 21, 2025

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses
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[Inflammation during COVID-19].

B Misset1, G Parzibut1, N Layios1

  • 1Service des Soins Intensifs, CHU Liège, Belgique.

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|June 3, 2022
PubMed
Summary
This summary is machine-generated.

Severe SARS-CoV-2 infection involves excessive inflammation and coagulation, similar to sepsis. While steroids and IL-6 inhibitors show promise, precision diagnostics are needed for tailored treatments.

Keywords:
ARDSInnate immunitySteroidsThrombosisCytokines

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Area of Science:

  • Virology
  • Immunology
  • Critical Care Medicine

Background:

  • Severe SARS-CoV-2 infection presents with diverse clinical manifestations, including inflammation, coagulation activation, and high cytokine levels.
  • Critical cases resemble bacterial sepsis, featuring acute respiratory distress syndrome and multiple organ failure.
  • Existing treatments like steroids suggest inflammation is excessive, not insufficient, in viral defense.

Purpose of the Study:

  • To review the biological mechanisms underlying severe SARS-CoV-2 disease.
  • To evaluate current and emerging therapeutic strategies.
  • To highlight the need for precision diagnostics in managing severe COVID-19.

Main Methods:

  • Review of clinical trial data on severe SARS-CoV-2.
  • Analysis of biomarkers related to inflammation and coagulation.
  • Comparison of COVID-19 pathophysiology with bacterial sepsis.

Main Results:

  • Steroids reduce mortality in severe cases, indicating excessive inflammation.
  • Interleukin-6 inhibitors show partial effectiveness.
  • Anticoagulants and fibrinolytics have a moderate effect on hypercoagulation.

Conclusions:

  • Severe COVID-19 shares features with bacterial sepsis, requiring multi-faceted treatment approaches.
  • Targeted therapies like IL-6 inhibitors offer potential benefits.
  • Future research must focus on developing precise diagnostic tools for personalized therapy in severe SARS-CoV-2 infection.