Histone deacetylases (HDACs) contribute to shaping many aspects of T cell lineage functions in anti-infective surveillance; however, their role in fungus-specific immune responses remains poorly understood. Using a T cell-specific deletion of HDAC1, we uncover its critical role in limiting polarization toward Th17 by restricting expression of the cytokine receptors gp130 and transforming growth factor β receptor 2 (TGF-βRII) in a fungus-specific manner, thus limiting Stat3 and Smad2/3 signaling. Controlled release of interleukin-17A (IL-17A) and granulocyte-macrophage colony-stimulating factor (GM-CSF) is vital to minimize apoptotic processes in renal tubular epithelial cells in vitro and in vivo.
View Article and Find Full Text PDFPolymicrobial co- and superinfections involving bacterial and fungal pathogens pose serious challenges for diagnosis and therapy, and are associated with elevated morbidity and mortality. However, the metabolic dynamics of bacterial-fungal interactions (BFI) and the resulting impact on disease outcome remain largely unknown. The fungus Aspergillus fumigatus and the bacterium Klebsiella pneumoniae are clinically important pathogens sharing common niches in the human body, especially in the lower respiratory tract.
View Article and Find Full Text PDFBariatric surgery is an approach used to treat patients with obesity in a small minority of eligible patients. Non-pharmacological therapies are important to maintain decent health status post-bariatric surgery. We performed a systematic review with meta-analysis to evaluate the effects of exercise on heart rate variability (HRV) in patients submitted to bariatric surgery.
View Article and Find Full Text PDFSenescence is a cellular state in which the cell loses its proliferative capacity, often irreversibly. Physiologically, it occurs due to a limited capacity of cell division associated with telomere shortening, the so-called replicative senescence. It can also be induced early due to DNA damage, oncogenic activation, oxidative stress, or damage to other cellular components (collectively named induced senescence).
View Article and Find Full Text PDFCellular senescence is a state of permanent growth arrest. It can be triggered by telomere shortening (replicative senescence) or prematurely induced by stresses such as DNA damage, oncogene overactivation, loss of tumor suppressor genes, oxidative stress, tissue factors, and others. Advances in techniques and experimental designs have provided new evidence about the biology of senescent cells (SnCs) and their importance in human health and disease.
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