Impact of RD149 Deletions on Mycobacterium tuberculosis Growth and Cytokine Induction
Author Information
Author(s): Kanji Akbar, Hasan Zahra, Mehnaz Mahboob, Raunaq Jafri, Sana Hasan, Rumina Hasan
Primary Institution: Aga Khan University
Hypothesis
The presence of RD149 deletions in Mycobacterium tuberculosis strains affects their growth and cytokine induction in host cells.
Conclusion
RD149 deletions in Mycobacterium tuberculosis strains are associated with reduced growth and increased TNFα induction in host cells.
Supporting Evidence
- CAS1 strains with RD149 deletions showed slower growth in broth compared to strains without deletions.
- All CAS1 strains induced higher levels of TNFα and IL10 secretion in THP-1 cells than the laboratory reference strain H37Rv.
- Strains with RD149 deletions induced more TNFα secretion than those without deletions.
Takeaway
Some germs that cause tuberculosis have missing pieces in their DNA, which makes them grow slower but can make the body react more strongly to them.
Methodology
The study compared the growth and cytokine induction of Mycobacterium tuberculosis strains with and without RD149 deletions using THP-1 monocytes.
Limitations
The study is limited to specific strains and may not represent all Mycobacterium tuberculosis strains.
Participant Demographics
Strains were isolated from both male and female patients with a median age of approximately 24 years.
Statistical Information
P-Value
p=0.013
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website