Comparison of different puncture methods in C57BL/6 mouse tail veins / 中国比较医学杂志

Objective Four different methods were examined to identify a safer and more reliable method for tail vein punctures in C57BL/6 mice. Methods In total,320 mice were randomly divided into four groups: a blank group, incandescent lamp baking method group,three-line method group,and combined method group. Blood samples were taken from the left or right peripheral vein of puncture mice. Puncture success rate of each group was recorded. SPSS 13.0 software was used to compare statistical difference among groups. Results Compared with the blank group,success rates of the other three methods were significantly higher(P < 0.001). Further, the three-line method was better than the incandescent lamp baking method(P< 0.001). The success rate of the combined method was significantly higher than the three-line and incandescent lamp baking methods(P< 0.001). Conclusions The combined method greatly improved the success rate of tail vein punctures in C57BL/6 mice. This method is more reliable and should be more widely used in the future.

Correction of Cryptotia Using Combined Method of Fukuda and Onizuka

Cryptotia is a relatively common congenital anomaly in orientals. It is charaterized by obliteration of auriculocephalic sulcus and buried ear cartilage of upper pole beneath the scalp skin. In addition, there is often a posterior displacement of the superior crus of antihelix. The goals of surgical correction are the coverage of skin deficit, deepening of the auriculocephalic sulcus and the correction of deformed cartilage. Some authors stressed a tendency for the superior portion of the auricle to spring back to the original portion after surgery. We have devised a surgical method to prevent recurrence of the cartilagenous deformity using combined method of Fukuda and Onizuka. From March in 2001 to Jan, 2004, We have repaired 6 cryptotic deformities in 5 patients including one bilateral cryptotia. Between them We used combined method of Fukuda and Onizuka in 4 severely deformed cryptotic superior ear cartilage correction with satisfactory results. Single Fukuda's method was used in 2 mildly deformed cryptotias. The combined method composed of Z-plasty incision for skin releasing, and incision along the crus and then flattened the crus by mattress suture, multiple incisions in the back of the superior crus and then grafting the piece of conchal cartilage producing a splinting to hold the crus out in a smooth, curved configuration for the correction of the superior portion of the deformed ear. The results were remarkable improvement of profile in severely deformed cryptotia. And so this combined method is useful method for the correction of severely deformed cartilage in cryptotia.