POSTURAL EQUILIBRIUM DURING CENTRIFUGATION

Equilibrium Density Centrifugation of Thyroglobulin in RbCl

A method of evaluating the iodine distribution in thryroglobulin has been developed. It is based on the increase in density that occurs when iodine is incorporated into proteins. Resolution of iodinated species is obtained by equilibrium centrifugation in a 34.5% (w/w) RbCl density gradient (isopycnic centrifugation) in either the analytical or preparative ultracentrifuge. The equilibrium in 34...

Posture, Equilibrium, and Postural Stabilization

Perceived radial translation during centrifugation.

BACKGROUND Linear acceleration generally gives rise to translation perception. Centripetal acceleration during centrifugation, however, has never been reported giving rise to a radial, inward translation perception. OBJECTIVE To study whether centrifugation can induce a radial translation perception in the absence of visual cues. METHODS To that end, we exposed 12 subjects to a centripetal ...

Equilibrium density gradient centrifugation of the scrapie agent in Nycodenz.

Plasma membrane-enriched preparations from scrapie-infected and healthy hamster brains were detergent-extracted, then separated by equilibrium density centrifugation in continuous Nycodenz gradients. The highest level of infectivity was always associated with the insoluble residue which sedimented through 40% Nycodenz. The degree of aggregation in these insoluble complexes varied depending upon...

Cerebral hypoperfusion precedes nausea during centrifugation.

INTRODUCTION Nausea and motion sickness are important operational concerns for aviators and astronauts. Understanding the underlying mechanisms associated with motion sickness may lead to new treatments. The goal of this work was to determine if changes in cerebral blood flow precede the development of nausea in subjects susceptible to motion sickness. METHODS Cerebral flow velocity in the mi...