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Related Concept Videos

Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

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Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
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Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
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Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

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Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
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Pulmonary Tuberculosis I01:29

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Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
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Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
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Complement System01:27

Complement System

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The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
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Related Experiment Video

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Enrichment of Native and Recombinant Extracellular Vesicles of Mycobacteria
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Complement component 3: a new paradigm in tuberculosis vaccine.

José De La Fuente1,2, Christian Gortázar1, Ramón Juste3

  • 1a SaBio, Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM) , Ciudad Real , Spain.

Expert Review of Vaccines
|November 26, 2015
PubMed
Summary

New tuberculosis (TB) vaccines are needed. Complement component 3 (C3) was identified as a key factor in protection against TB in wild boars, suggesting it as a target for novel vaccine development.

Keywords:
Complementimmunologymycobacteriatuberculosisvaccine

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Area of Science:

  • Immunology
  • Vaccinology
  • Microbiology

Background:

  • Tuberculosis (TB) remains a global health challenge affecting humans and animals.
  • Current vaccines offer limited protection against pulmonary TB and infection.
  • Post-genomics technologies enable discovery of new TB vaccine targets.

Purpose of the Study:

  • To identify novel antigens and mechanisms for developing more effective TB vaccines.
  • To investigate the role of complement component 3 (C3) in natural protection against TB.

Main Methods:

  • Utilized wild boar model for TB studies.
  • Employed post-genomics technologies to characterize host-pathogen interactions.
  • Administered oral immunization with heat-inactivated mycobacteria.

Main Results:

  • Identified complement component 3 (C3) as a natural correlate of protection against TB.
  • Demonstrated that oral immunization with heat-inactivated mycobacteria conferred protection in wild boars.
  • Confirmed the central role of C3 in mediating protection against TB.

Conclusions:

  • Complement component 3 (C3) is a promising target for developing novel TB vaccines.
  • Novel vaccine formulations targeting C3 could enhance protection against TB in humans and animals.