Clinical characteristics of SARS-CoV-2 vaccine-related acute appendicitis.

Background: In a large nationwide mass vaccination setting, the SARS-CoV-2 vaccine was recently linked to myocarditis, lymphadenopathy, herpes zoster infection and appendicitis. We aimed to examine the characteristics and management of SARS-CoV-2 vaccine-related acute appendicitis.

Methods: We performed a retrospective cohort study in a large tertiary medical centre in Israel.

A novel wave-like crawling robot has excellent swimming capabilities.

Multiple animals ranging from micro-meter scale bacteria to meter scale vertebrates rely on undulatory motion to propel themselves on land and in the water. This type of locomotion also appears in amphibious animals such as sea snakes and salamanders. While undulatory motion can be used for both crawling and swimming, it requires the coordination of multiple joints so that only a few robots have the ability to mimic this motion.

The Role of Early Sequential Biopsies in Delayed Renal Graft Function of Transplanted Kidney Is Reduced in Modern Immunosuppression Era.

Background: Delayed graft function (DGF) immediately after kidney transplantation is considered a risk factor for acute rejection. According to clinical guidelines, a weekly allograft biopsy should be performed until DGF resolves. Based on clinical evidence, the first biopsy is considered appropriate.

Hyperelastic modeling of solid methyl cellulose hydrogel under quasi-static compression.

Constitutive modeling of solid methyl cellulose (MC) hydrogels under quasi-static uniaxial compression is presented for a variety of compositions and test temperatures. Five constitutive models of varying complexity are examined, with the aim to identify the simplest accurate material representation. Due to the viscosity of the gel, the models were calibrated using compression tests only, with restrictions that ensure stability for other loading modes.

Improvements in Skin Quality Biological Markers in Skin Explants Using Hyaluronic Acid Filler VYC-12L.

Unlabelled: Hyaluronic acid (HA), both crosslinked and uncrosslinked, is used clinically to treat fine lines and provides additional improvements in skin quality attributes. The purpose of this study was to assess potential early differences in the expression of biological markers of skin quality in living human skin explants injected with uncrosslinked and crosslinked HA gels.

Methods: Living human skin explants injected with VYC-12L or noncrosslinked HA with mannitol (HYD) and noninjected controls were assessed via microscopy, histology, and immunohistochemistry on days 3 and/or 8 for biological markers of elasticity (collagen density, elastin, fibrillin-1) and hydration [aquaporin-3, acidic glycosaminoglycans (GAGs), HA].