2024 journal article
The NLRP3 Inflammasome Is Dispensable in Methicillin-Resistant <i>Staphylococcus aureus</i> Urinary Tract Infection
PATHOGENS, 13(2).
author keywords: MRSA; UTI; NLRP3; inflammasome
TL;DR:
It is suggested that MRSA-induced urinary NLRP3 activity does not play a role in the pathophysiology of the ascending UTI, and histopathological analysis of MRSA-infected bladder and kidney sections from Nlrp3−/− and WT mice showed similar inflammation.
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3. Good Health and Well-being
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Source: Web Of Science
Added: March 18, 2024
The NLRP3 inflammasome is a cytoplasmic complex that senses molecular patterns from pathogens or damaged cells to trigger an innate immune defense response marked by the production of proinflammatory cytokines IL-1β and IL-18 and an inflammatory death called pyroptosis. The NLRP3 inflammasome is activated in the urinary tract by a variety of infectious and non-infectious insults. In this study, we investigated the role of the NLRP3 inflammasome by comparing the pathophysiology of methicillin-resistant Staphylococcus aureus (MRSA) ascending UTI in wild-type (WT) and Nlrp3−/− mice. The difference in the bacterial burden detected in the urinary tracts of MRSA-infected WT and Nlrp3−/− was not statistically significant at 6, 24, and 72 h post-infection (hpi). The levels of pro-inflammatory cytokines and chemokines as well as the numbers of granulocytes recruited to bladder and kidney tissues at 24 hpi were also similar between Nlrp3−/− and WT mice. The histopathological analysis of MRSA-infected bladder and kidney sections from Nlrp3−/− and WT mice showed similar inflammation. Overall, these results suggest that MRSA-induced urinary NLRP3 activity does not play a role in the pathophysiology of the ascending UTI.