Tuberculosis, an infectious disease, is caused by Mycobacterium
tuberculosis. It remains a significant public health issue
around the globe, causing about 1.8 million deaths every year.
Drug-resistant M. tuberculosis, including multi-drug-resistant
(MDR), extremely-drug-resistant (XDR), and totally drugresistant
(TDR) M. tuberculosis, continues to be a threat to
public health. In the case of antibiotic-resistant tuberculosis,
the treatment effect of conventional antibiotics is low. Side
effects caused by high doses over a long period are causing
severe problems. To overcome these problems, there is an urgent
need to develop a new anti-tuberculosis drug that is different
from the existing compound-based antibiotics. Probiotics
are defined as live microorganisms conferring health
benefits. They can be potential therapeutic agents in this context
as the effectiveness of probiotics against different infectious
diseases has been well established. Here, we report that
Lactobacillus crispatus PMC201 shows a promising effect on
tuberculosis isolated from vaginal fluids of healthy Korean
women. Lactobacillus crispatus PMC201 reduced M. tuberculosis
H37Rv under co-culture conditions in broth and reduced
M. tuberculosis H37Rv and XDR M. tuberculosis in macrophages.
Lactobacillus crispatus PMC201 was not toxic to a
guinea pig model and did not induce dysbiosis in a human
intestinal microbial ecosystem simulator. Taken together, these results indicate that L. crispatus PMC201 can be a promising
alternative drug candidate in the current tuberculosis drug
regime. Further study is warranted to assess the in vivo efficacy
and confirm the mode of action of L. crispatus PMC201.
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Methicillin resistant Staphylococcus aureus (MRSA) with
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cationic porphyrin derivatives (PM, PE, PPN, and PPL) were used
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source. Photoinactivation experiments were performed by
optimizing energy doses and photosensitizer concentrations.
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