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Related Concept Videos

Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

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 progression...
Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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...
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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...
Tuberculosis01:23

Tuberculosis

Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

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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Related Experiment Video

Updated: Jun 11, 2026

An Automated Culture System for Use in Preclinical Testing of Host-Directed Therapies for Tuberculosis
09:34

An Automated Culture System for Use in Preclinical Testing of Host-Directed Therapies for Tuberculosis

Published on: August 16, 2021

Liquid vs. solid culture for tuberculosis: performance and cost in a resource-constrained setting.

V N Chihota1, A D Grant, K Fielding

  • 1Aurum Institute for Health Research, Johannesburg, South Africa. vchihota@auruminstitute.org

The International Journal of Tuberculosis and Lung Disease : the Official Journal of the International Union Against Tuberculosis and Lung Disease
|July 15, 2010
PubMed
Summary

The Mycobacterium Growth Indicator Tube (MGIT) method offers higher Mycobacterium tuberculosis yield and faster detection compared to Löwenstein-Jensen (LJ) medium, though at a greater cost. Minimizing contamination is crucial for MGIT

More Related Videos

System for Efficacy and Cytotoxicity Screening of Inhibitors Targeting Intracellular Mycobacterium tuberculosis
09:57

System for Efficacy and Cytotoxicity Screening of Inhibitors Targeting Intracellular Mycobacterium tuberculosis

Published on: April 5, 2017

Related Experiment Videos

Last Updated: Jun 11, 2026

An Automated Culture System for Use in Preclinical Testing of Host-Directed Therapies for Tuberculosis
09:34

An Automated Culture System for Use in Preclinical Testing of Host-Directed Therapies for Tuberculosis

Published on: August 16, 2021

System for Efficacy and Cytotoxicity Screening of Inhibitors Targeting Intracellular Mycobacterium tuberculosis
09:57

System for Efficacy and Cytotoxicity Screening of Inhibitors Targeting Intracellular Mycobacterium tuberculosis

Published on: April 5, 2017

Area of Science:

  • Microbiology
  • Clinical Diagnostics
  • Public Health

Background:

  • Tuberculosis (TB) diagnosis relies on culture methods.
  • Mycobacterium tuberculosis detection requires efficient and accurate laboratory techniques.
  • Comparing diagnostic platforms is essential for optimizing TB care.

Purpose of the Study:

  • To compare the Mycobacterium Growth Indicator Tube (MGIT) with Löwenstein-Jensen (LJ) medium for Mycobacterium tuberculosis detection.
  • To evaluate yield, time to positive culture, and contamination rates.
  • To assess the cost-effectiveness of the MGIT system.

Main Methods:

  • Sputum samples from gold miners were cultured using both MGIT and LJ media.
  • Cost per culture was estimated.
  • A decision-tree model was used to calculate the incremental cost per additional Mycobacterium tuberculosis identified in smear-negative samples.

Main Results:

  • MGIT demonstrated a higher yield of mycobacteria (29.7%) compared to LJ (22.8%).
  • MGIT showed higher contamination rates (16.7% vs. 9.3%) but a shorter time to positive culture (median 14 vs. 25 days for smear-negative samples).
  • The incremental cost per additional Mycobacterium tuberculosis identified varied depending on the speciation method used with MGIT.

Conclusions:

  • MGIT provides superior yield and faster results for Mycobacterium tuberculosis detection.
  • The higher cost of MGIT necessitates careful consideration of its cost-effectiveness.
  • The significant proportion of non-tuberculous mycobacteria (NTM) highlights the need for rapid speciation tests alongside culture.
  • Reducing culture contamination is vital for improving the cost-effectiveness of TB diagnostics.