Hwang Kun, Kim Dae Joong, Hwang Se Ho
Department of Plastic Surgery, Inha University College of Medicine, Sinheung-dong, Jung-gu, Incheon, Korea.
J Craniofac Surg. 2007 May;18(3):591-3. doi: 10.1097/scs.0b013e318052ff59.
The aim of this study was to evaluate the immunohistochemical differences between the muscular fiber types in the pars peripheralis and pars marginalis of human orbicularis oris muscle. Five upper lips of fresh human adult cadavers were used. Full thickness of the upper lip, 5 mm in width, was harvested vertically at a peak point of cupid's bow. Troponin I-SS and Troponin I-FS antibodies were used to determinate the slow and fast skeletal muscle fibers. The pars peripheralis is composed of slow fibers (22%) and fast fibers (73%). The pars marginalis is composed of slow fibers (30%) and fast fibers (66%). We assume that the pars peripheralis and pars marginalis should be repaired sortably because the muscle reaction and endurance are not the same.
本研究的目的是评估人类口轮匝肌外周部和边缘部肌纤维类型之间的免疫组化差异。使用了五例新鲜成人尸体的上唇。在上唇丘比特弓的顶点垂直切取宽度为5毫米的全层组织。使用肌钙蛋白I-SS和肌钙蛋白I-FS抗体来确定慢肌纤维和快肌纤维。外周部由慢肌纤维（22%）和快肌纤维（73%）组成。边缘部由慢肌纤维（30%）和快肌纤维（66%）组成。我们认为，由于肌肉反应和耐力不同，外周部和边缘部应分别进行修复。
