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THE NEUROTROPHIC EFFECTS OF CULTURING SCHWANNS CELLS ON ANTERIOR HORN NEURON OF SPINAL CORD

Schwanns cells were obtained from the distal end of the sciatic nerve following Wallerian degeneration of SD rats. These cells were cultured with the anteriorhorn neuron of spinal cord of 14dayold SD rat fetus. The two kinds of cells were separated by a slice. Through the microscope, the dendrites and the morphology changes at the 24th, 48th, 72th, and 96 th hour after culture were observed. It was demonstrated that the Schwanns cells played the role of maintaining the survival of neuron and promoting the growth of dendrites. It was said that the Schwanns cells could secrete neurotrophic factor which made the body enlarged and caused the dendrites enlonged to several times of the body.

ABSTRACTS THE STEREOLOGY OF VESSEL DENSITY OF SUPER THIN SKIN FLAP

In experimental study on pigs was designed to evaluate the changes of the vessel density of super thin skin flaps.By means of stratified sampling, isotropic uniform random section, the vessel density of the supor thin skin flap was obeerved under the MIAS-200 image analyzer. The results showed that the remarkable changes of vascular density were found to begin on the 5th day after operation and was first appeared in the distal port of the survived flap,then,it proceeded gradually from the distal proximally.

皮肤扩张术在隐动脉皮瓣移位中的应用

皮肤软组织扩张术并发症的防治

报道皮肤软组织扩张术共83例,105个扩张术。发生并发症共14个扩张术(13.3％),失败7个(6.7％)。最多见的并发症是切口裂开扩张器外露,其次是穿刺误伤扩张器、感染等。分析了并发症的原因,并提出了防治措施。