Mice with an absent stress response are protected against ischemic renal injury.

Inducible heat shock proteins (HSPs), regulated by heat shock factor-1 (HSF-1), protect against renal cell injury in vitro. To determine whether HSPs ameliorate ischemic renal injury in vivo, HSF-1 functional knockout mice (HSF-KO) were compared with wild-type mice following bilateral ischemic renal injury. Following injury, the kidneys of wild-type mice had the expected induction of HSP70 and HSP25; a response absent in the kidneys of HSF-KO mice. Baseline serum creatinine was equivalent between strains. Serum creatinine at 24 h reflow in HSF-KO mice was significantly lower than that in the wild type. Histology showed similar tubule injury in both strains after ischemic renal injury but increased medullary vascular congestion in wild-type compared with HSF-KO mice. Flow cytometry of mononuclear cells isolated from kidneys showed no difference between strains in the number of CD4(+) and CD8(+) T cells in sham-operated animals. At 1 h of reflow, CD4(+) and CD8(+) cells were doubled in the kidneys of wild-type but not HSF-KO mice. Foxp3(+) T-regulatory cells were significantly more abundant in the kidneys of sham-operated HSF-KO than wild-type mice. Suppression of CD25(+)Foxp3(+) cells in HSF-KO kidneys with the anti-CD25 antibody PC61 reversed the protection against ischemic renal injury. Thus, HSF-KO mice are protected from ischemic renal injury by a mechanism that depends on an increase in the T-regulatory cells in the kidney associated with altered T-cell infiltration early in reflow. Hence, stress response activation may contribute to early injury by facilitating T-cell infiltration into ischemic kidney.

SARS-CoV2, the COVID-19 Pandemic and Community Perceptions.

The purpose of this study was to describe knowledge and beliefs about SARS-CoV2 and COVID-19 and explore the gaps between current media coverage of health risks and what the general public knows about the virus and its outcome. A 37-question survey was developed and administered to a community collaborative group in a Midwestern state in the United States. Fifty-three participants completed the survey. When asked where participants found their information, a majority reported the internet (33.9%, n = 18/53) and radio and/or tv (28.3%, n = 15/53). Most participants showed a basic level of COVID-19 knowledge, but few could identify the 3 most frequent symptoms of COVID-19 (7.5%, n = 4/53). The results from this study highlight the continued need for increased public health communication. Educational efforts should focus on social media and internet outlets to address COVID-19 misinformation, strategies to address vaccine hesitancy, and the associated communication gap to help address related health disparities.