Kathleen Pappritz, Isabel Voss, Muhammad El-Shafeey, Sophie Van Linthout
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Sex differences in age-related cardiac and splenic S100A9 and NLRP3 expression.
Age is an important risk factor for cardiovascular diseases (CVD) and associated with a systemic, low-grade inflammation, so called "inflammaging". We aimed to investigate the impact of age and sex on the inflammatory markers S100A9 and components of the NLRP3 inflammasome at an early stage in the aging process, using mature adult and middle-aged/perimenopausal mice. Given the importance of the cardiosplenic axis in heart failure, the spleen was analyzed in addition to the left ventricle and cardiac fibroblasts. Using immunohistochemistry, flow cytometry and gene expression analysis, our study demonstrates a higher inflammatory state of the spleen in perimenopausal versus age-matched males and 3-months old female mice, whereas aging is associated with higher left ventricular gene expression of S100A9 and NLRP3 inflammasome components independent of sex. In conclusion, our data indicate that inflammatory signatures in the spleen and left ventricle already differ in middle-aged mice and are partly sex-dependent.
期刊介绍：
JLB is a peer-reviewed, academic journal published by the Society for Leukocyte Biology for its members and the community of immunobiologists. The journal publishes papers devoted to the exploration of the cellular and molecular biology of granulocytes, mononuclear phagocytes, lymphocytes, NK cells, and other cells involved in host physiology and defense/resistance against disease. Since all cells in the body can directly or indirectly contribute to the maintenance of the integrity of the organism and restoration of homeostasis through repair, JLB also considers articles involving epithelial, endothelial, fibroblastic, neural, and other somatic cell types participating in host defense. Studies covering pathophysiology, cell development, differentiation and trafficking; fundamental, translational and clinical immunology, inflammation, extracellular mediators and effector molecules; receptors, signal transduction and genes are considered relevant. Research articles and reviews that provide a novel understanding in any of these fields are given priority as well as technical advances related to leukocyte research methods.
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