Tuberculosis Clinical Trial
Official title:
The Impact of Malnutrition on Immune Responses to Tuberculosis in Indian Children
The aim of this study is to assess immune responses to Mtb in children with MAM compared to well-nourished children and to evaluate the impact of a nutrition intervention on these immune responses.
Immune dysfunction in malnourished children is poorly characterised. The aim of this study is to assess immune responses to Mycobacterium tuberculosis (Mtb) in children with moderate acute malnutrition (MAM) compared to wellnourished children and to evaluate the impact of a nutrition intervention on these immune responses. Innate and adaptive immune responses to Mtb will be characterised in four groups: 1) MAM children with TB disease; 2) Wellnourished children with TB disease; 3) MAM children with latent TB infection; 4) Well-nourished children with latent TB infection. A range of assays to compare innate, adaptive and functional immune responses to TB between groups will be performed. Whether nutritional supplementation improves immune function in MAM children remains uncertain. Hence, children in all four groups will be followed up during 6 months of TB therapy/chemoprophylaxis. MAM children will receive 12 weeks of concomitant ready-to-use supplementary food, to evaluate longitudinal changes in innate and adaptive immune function, monocyte:lymphocyte ratio and mycobacterial growth inhibition. The results of this study will provide data to understand the reasons for infection susceptibility in malnourished children and provide a proof-of-concept that nutritional rehabilitation promotes immune rehabilitation. It will also provide a proof-of concept for use of nutritional supplementation as adjust therapy in TB disease ;
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