Persistent endothelial dysfunction in post-COVID-19 syndrome and its associations with symptom severity and chronic inflammation.

Background: Post-COVID-19 syndrome (PCS) is a lingering disease with ongoing symptoms such as fatigue and cognitive impairment resulting in a high impact on the daily life of patients. Understanding the pathophysiology of PCS is a public health priority, as it still poses a diagnostic and treatment challenge for physicians.

Methods: In this prospective observational cohort study, we analyzed the retinal microcirculation using Retinal Vessel Analysis (RVA) in a cohort of patients with PCS and compared it to an age- and gender-matched healthy cohort (n = 41, matched out of n = 204).

Electromagnetic Reconfiguration Using Stretchable Mechanical Metamaterials.

Response to environmental thermomechanical inputs in applications that range from wearable electronics to aerospace structures necessitates agile communication systems driven by reconfigurable electromagnetic structures. Antennas in these systems must dynamically preserve acceptable radiation characteristics while enabling on-demand performance reconfiguration. However, existing reconfiguration mechanisms through stretchable conductors rely on high-strain behavior in soft substrates, which limits their applicability.

Pleiotropic effects of antibiotics on T cell metabolism and T cell-mediated immunity.

T cells orchestrate adaptive and innate immune responses against pathogens and transformed cells. However, T cells are also the main adaptive effector cells that mediate allergic and autoimmune reactions. Within the last few years, it has become abundantly clear that activation, differentiation, effector function, and environmental adaptation of T cells is closely linked to their energy metabolism.

Yolk-shell-type CaO-based sorbents for CO capture: assessing the role of nanostructuring for the stabilization of the cyclic CO uptake.

Improving the cyclic CO uptake stability of CaO-based solid sorbents can provide a means to lower CO capture costs. Here, we develop nanostructured yolk(CaO)-shell(ZrO) sorbents with a high cyclic CO uptake stability which outperform benchmark CaO nanoparticles after 20 cycles (0.17 g g) by more than 250% (0.