Objective To evaluate the relationship between stenosis of intra- or extra-cranial cerebral large artery and capsular warning syndrome(CWS). Methods Eleven consecutive CWS patients hospitalized during period of time from November 2008 to December 2009 were retrospectively analyzed.Result In these 11 patients with CWS, 5 patients had motor symptoms only, 4 patients had pure sensory symptoms, and 2 patients had sensorimotor symptoms. Ten patients underwent cervical contrast-enhanced MRA and intracranial MRA examination. The results showed no sign of arterial stenosis. Seven CWS patients eventually had strokes, 1 progressed to stroke despite receiving the therapy of antiplatelet and anticoagulation. All stroke lesions were located in the capsula interna. All the CWS patients had vascular risks: 7 were smoker, 8 had hypertension, 1 had diabetes mellitus, and 5 had hyperlipidemia. One patient had a history of previous stroke; no patient had a history of ischemic heart disease or atrial fibrillation. At follow-up(10. 2 ±3.4)mouths, the average modified Rankin scale score for all patients was 0. 73 ± 1.20.Conclusion CWS was not associated with stenosis of the intra and extra-cranial large cerebral arteries.CWS may be associated with small-vessel single-penetrator disease.

Nowadays, health care products based on static magnetic fields (SMF) and merchandise of magnetic therapy are popular around the world. But the biomedical effects of SMF to animals or human beings remain a widely concerned controversy. In this paper, the recent researches in China and abroad about the biomedical effects of SMF were reviewed in three levels: the cellular, animal and human levels. Nevertheless, these data were not consistent with each other and even some contradicts others' researches. So, it is necessary to do more and further studies on SMF dosing regiman, sham control magnetic device and blinding procedures to obtain the optimal magnetic intensity, the desired therapeutic effects in practical cases and prepare for applying the SMF in biomedical fields more effectively in the future.
Animals ; Humans ; Magnetic Field Therapy ; methods ; Magnetic Fields ; Neoplasms ; therapy ; Pain ; prevention & control

BACKGROUND:Slow growth of peripheral nerve, muscle denervation atrophy and fossilization of motor end plate fol owing sciatic nerve injury cause irreversible limb function disorders. Umbilical cord mesenchymal stem cells have been widely used in multi-disciplinary research, but studies concerning umbilical cord mesenchymal stem cells delaying denervated muscle atrophy in rats fol owing peripheral nerve injury are rarely reported.
OBJECTIVE:To observe the value of human umbilical cord mesenchymal stem cells transplantation to delay denervated muscle atrophy of rats after sciatic nerve injury.
METHODS:Umbilical cord blood was col ected from healthy parturient woman after ful-term delivery. In the experimental group, the rat’s Sunderland IV degree sciatic nerve injury model was established by 5 mm denervation, epineurial repair, and 5 mm smal gap transplantation of umbilical cord mesenchymal stem cells. In the control group, after modeling, the same volume of normal saline was injected into the smal gap. The main outcome measures included the sciatic nerve function index, the wet weight of triceps surae,sciatic nerve latency, action potential conduction velocity and amplitude,and skeletal muscle fiber cross section area maintenance rate.
RESULTS AND CONCLUSION:After 4, 8 and 12 weeks of modeling, the sciatic nerve function index values, the wet weight of triceps surae and skeletal muscle fiber cross section area maintenance rates in the experimental group were significantly higher than those in the control group (P<0.05). After 12 weeks of modeling, electromyography results showed sciatic nerve latency was significantly lower, but action potential conduction velocity and amplitude were dramatical y higher in the experimental group than the control group (P<0.05, P<0.001). Human umbilical cord mesenchymal stem cells transplantation in denervated muscle atrophy rats after sciatic nerve promotes nerve growth, delays denervated muscle atrophy, maintains the denervatied neuromusle’s morphology and function.