1,25 (OH)2D3 treatment alters the granulomatous response in M. tuberculosis infected mice.

Abstract:

:Induction of cathelicidin-mediated antimicrobial pathway against intracellular M. tuberculosis by 1,25-dihydroxyvitamin D3 (1,25(OH)2D3), the active form of vitamin D, has been documented in vitro. However, in in vivo studies related to inflammatory disorders, 1,25(OH)2D3 has been demonstrated to induce an anti-inflammatory response. We therefore examined whether in the murine model of tuberculosis, the anti-inflammatory effects of 1,25(OH)2D3 would affect the outcome of M. tuberculosis infection. We show here that administration of 1,25(OH)2D3 to M. tuberculosis infected mice led to a change in lung granuloma architecture, characterized by a marked decrease in B cell lymphocytic aggregates. Consistent with the altered granulomas, 1,25(OH)2D3-treated mice also exhibited significantly higher bacterial burden in the lungs compared to the control group. These findings highlight the need to further investigate the effect of vitamin D on host immunity to M. tuberculosis in the context of the granulomatous response.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Bhatt K,Rafi W,Shah N,Christakos S,Salgame P

doi

10.1038/srep34469

subject

Has Abstract

pub_date

2016-10-04 00:00:00

pages

34469

issn

2045-2322

pii

srep34469

journal_volume

6

pub_type

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