Differential regulation of macropinocytosis in macrophages by cytokines: Implications for foam cell formation and atherosclerosis

A key event during the formation of lipid-rich foam cells during the progression of atherosclerosis is the uptake of modified low-density lipoproteins (LDL) by macrophages in response to atherogenic mediators in the arterial intima. In addition to scavenger receptor-dependent uptake of LDL, macropinocytosis is known to facilitate the uptake of LDL through the constitutive and passive internalization of large quantities of extracellular solute. In this study we confirm the ability of macropinocytosis to facilitate the uptake of modified LDL by human macrophages and show its modulation by TGF-β, IFN-γ, IL-17A and IL-33. Furthermore we show that the TGF-β-mediated inhibition of macropinocytosis is a Smad-2/-3-independent process

Siblings with disabilities: a duoethnography on the intersections between a sibling relationship and disability

A growing body of research examines the intersections between sibling relationships and disability. However, much of this research focuses on non-disabled siblings and how the disabled sibling affects them, thereby continuing to center able-bodiedness while further marginalizing disabled people. This research centers the voices of two siblings who are both disabled. Using duoethnography, the researchers engaged in a dialog interrogating how disability has played a role in our sibling relationship. Our dialog demonstrated the complexity of our experiences as siblings and as disabled people. We found that physical disability, a status we do not share, created role asymmetry and power differentials in our relationship. Conversely, we discussed how our shared experience of having psychiatric disabilities had a positive influence on our closeness, and enhanced our ability to provide mutual support and engage in reciprocity. This duoethnography has important implications for the inclusion of disabled siblings in future research