Preclinical tools for the evaluation of tuberculosis treatment regimens for children

Area of Science:

• Microbiology
• Pharmacology
• Pediatrics

Background:

• Current tuberculosis (TB) treatment protocols are often adapted from adult regimens for pediatric use.
• Pediatric TB presents unique challenges due to disease heterogeneity across different age groups, necessitating distinct therapeutic approaches.

Purpose of the Study:

• To evaluate the utility of various preclinical models in assessing TB treatment regimens for pediatric populations.
• To explore how these models can aid in optimizing drug selection and development for pediatric TB.

Main Methods:

• Development and application of diverse preclinical models, including in vitro pharmacodynamic systems and animal models (rabbits, mice), to simulate different forms of pediatric TB (disseminated, TBM, paucibacillary, cavitary).
• Assessment of drug distribution to disease sites within these models.
• Integration with translational modeling approaches.

Main Results:

• No single preclinical model fully represents the spectrum of pediatric TB.
• Specific models show promise for simulating disseminated disease, tuberculous meningitis (TBM), paucibacillary, and cavitary TB.
• Models facilitate the study of drug distribution relevant to pediatric disease sites.

Conclusions:

• Preclinical models, despite limitations, are valuable tools for studying drug distribution and optimizing TB treatment regimens for children.
• These models can accelerate the development of therapies for challenging pediatric TB cases, including drug-resistant TB and TBM.