Scientists investigate how TB bacteria hide, adapt and survive (WORLD TB DAY), Pg9

Key Highlights:

• World TB Day is observed annually on March 24, with the theme "We can end TB", focusing on efforts to eliminate the disease.
• Researchers at IIT Bombay have discovered that Mycobacterium tuberculosis (Mtb) reshapes its outer membrane to evade immune defenses.
• A study reveals a new method using liquid crystals to detect these membrane shifts, potentially aiding in diagnosing difficult-to-detect infections.
• A second study at JJS Institute of Advanced Studies and Research, Kolkata focuses on how the bacterium controls itself from within.

Detailed Insights:

• Mycobacterium tuberculosis (Mtb) remains a major global health problem, exacerbated by the rise of multi-drug resistant (MDR) strains.
• The TB burden in India is rising due to increasing active cases, disease relapse from antimicrobial resistance (AMR), and patient non-compliance with treatment.
• The outer membrane of Mtb is dynamic, changing as the bacterium transitions between active and dormant states, aiding in stress resistance and immune evasion.
• A label-free, liquid crystal-based method can detect changes in the bacterial membrane, distinguishing between different states of the bacterium.
• Early, cheap, and fast TB diagnosis is crucial in India due to the high population and many patients living below the standard of living.
• Development of cheaper, mass deployable diagnostic platforms that do not require cold storage transport and heavy equipment is urgently needed.

Scientific/Technical Concepts Involved:

• Mycobacterium tuberculosis (Mtb): The bacterium that causes tuberculosis (TB) in humans.
• Antimicrobial Resistance (AMR): The ability of a microorganism to resist the effects of an antimicrobial drug.
• Lipidome: The entire collection of lipids in an organism, cell, or cellular compartment.