Rapid and Direct Action of Lipopolysaccharide (LPS) on Skeletal Muscle of Larval .

The endotoxin lipopolysaccharide (LPS) from Gram-negative bacteria exerts a direct and rapid effect on tissues. While most attention is given to the downstream actions of the immune system in response to LPS, this study focuses on the direct actions of LPS on skeletal muscle in  . It was noted in earlier studies that the membrane potential rapidly hyperpolarizes in a dose-dependent manner with exposure to LPS from and .

Effects of inhibiting mTOR with rapamycin on behavior, development, neuromuscular physiology and cardiac function in larval .

Rapamycin and other mTOR inhibitors are being heralded as possible treatments for many human ailments. It is currently being utilized clinically as an immunomodulator after transplantation procedures and as a treatment for certain forms of cancer, but it has numerous potential clinical indications. Some studies have shown profound effects on life cycle and muscle physiology, but these issues have not been addressed in an organism undergoing developmental processes.

Evaluation and Management of Neck and Back Pain.

Neck and back pain are common reasons for seeking evaluation and treatment in the emergency department. Within both systems there exist several time-sensitive diagnoses that the emergency provider should be familiar with in order to prevent significant morbidity and mortality. In this article we provide a general overview of these complaints by discussing problems in a systems-based fashion as well as discussing the initial evaluation, work-up, and treatment options for these diagnoses.

The effects of potassium and muscle homogenate on proprioceptive responses in crayfish and crab.

Proprioception of limbs and joints is a basic sensory function throughout most of the animal kingdom. It is important to understand how proprioceptive organs and the associated sensory neurons function with altered environments such as increased potassium ion concentrations ([K]) from diseased states, ionic imbalances, and damaged tissues. These factors can drastically alter neuronal activity.

A Novel Small-Specimen Planar Biaxial Testing System With Full In-Plane Deformation Control.

Simulations of soft tissues require accurate and robust constitutive models, whose form is derived from carefully designed experimental studies. For such investigations of membranes or thin specimens, planar biaxial systems have been used extensively. Yet, all such systems remain limited in their ability to: (1) fully prescribe in-plane deformation gradient tensor F2D, (2) ensure homogeneity of the applied deformation, and (3) be able to accommodate sufficiently small specimens to ensure a reasonable degree of material homogeneity.