RESUMO
Although great progress has been made in the treatment of renal calcium oxalate stones, the incidence and recurrence rate are still high. Functional nanomaterials refer to nanomaterials with specific functions after physical or chemical action.Their role in the treatment of renal calcium oxalate stones has been widely recognized in recent years. Functional nano-materials can be divided into nano-enzymes, nano-drugs and nano-carriers according to their functions. Nano-enzymes and nano-drugs can prevent and treat calcium oxalate kidney calculi by using their physical and chemical properties or drugs. Nano-carriers can treat kidney stones by delivery of the drugs. The purpose of this paper is to describe the application of functional nanomaterials in the prevention and treatment of renal calcium oxalate stones, to summarize the mechanism of inhibiting the formation of renal calcium oxalate stones and the direction of clinical treatment in the future.
RESUMO
This experimental study was designed to unravel the relationship between muscle tension and its electrophysiological property. The experiments on repetitive pulse stimulus in different current intensity to rabbit's motor nerve were performed in different pulse frequency by electromyography which applied electrical pulses and excited the tibial nerve, and by Instron 5544 machine which measured muscle tensions. The experimental data revealed that the tension force varied with the stimulus frequency in a quasi-parabolic relation, while it seemingly increased little with the stimulus intensity.