uglevod
Senior Member
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in addition, the way the bacteria stop the VDR from transcription is to produce ever-increasing concentrations of an antagonist, such as Capnine, which ultimately stop 1,25-D from activating the VDR. In this way the bacteria stop the VDR from transcribing most of the antimicrobial peptides.
Yeah and looks like there are even more ways like the data from the following very recent paper:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6177120/
Our macrophages are equipped with the ability to detect and kill invading pathogens, and yet, these cells of the innate immune system are still subject to infection by intracellular bacterium. In particular, mycobacterium, the type of intracellular bacteria responsible for diseases such as tuberculosis and leprosy, are very successful at establishing infection within macrophages.
Following infection, virulent mycobacteria persist and grow within the macrophage, suggesting that the intrinsic activation of an innate antimicrobial response is subverted by the intracellular pathogen
Upon infection of monocytes with M. leprae, there was no upregulation of CYP27B1 nor its enzymatic activity converting the inactive prohormone form of vitamin D (25-hydroxyvitamin D) to the bioactive form (1,25α-dihydroxyvitamin D)