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The role of sialoadenectomy and ep?dermal growth factor (EGF) in skin development

机译:涎腺切除术和表皮生长因子(EGF)在皮肤发育中的作用

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In this study, the effect of epidermal growth factor (EGF) on skin development was investigated. A total of 24 adult female Spraque-Dawley rats were used in the study. The rats were divided into 3 equal groups as control, sialoadenectomy (SX) and sialoadenectomy+epidermal growth factor (SX+EGF). Sialoadenectomy was performed on the other groups except control. After a 21-day recovery period, subjects were made to mate. SX+EGF group rats were also given 12.5 μg/day EGF for each animal orally in the 16, 17th, 18th and 19th days of pregnancy. After pregnancy, the offsprings obtained were grown until the 28th day. All 28-day-old offsprings in all groups were weighed and sacrificed. Skin samples from interscapular region were examined under light and electron microscope. In light and electron microscopy, skin sections of SX group, atrophy in epiderm, hyperkeratosis, decrease in hair follicles and sebaceous glands, along with local thinning of basal membrane, hemidesmosome loss and necrotic cells were seen. In skin sections of SX+EGF group, the view was similar to controls. As a result, epidermal growth factor was concluded to have an important role in skin development.
机译:在这项研究中,研究了表皮生长因子(EGF)对皮肤发育的影响。总共使用了24只成年雌性Spraque-Dawley大鼠。将大鼠分成3组,分别作为对照组,唾液腺切除术(SX)和唾液腺切除术+表皮生长因子(SX + EGF)。除对照组外,其他组均进行了骨切除术。在21天的恢复期后,使受试者交配。在妊娠的第16、17、18和19天,每只动物口服SX + EGF组大鼠12.5μg/天的EGF。怀孕后,获得的后代将一直生长到第28天。称重并处死所有组的所有28天大的后代。在光镜和电子显微镜下检查肩s间区域的皮肤样品。在光学和电子显微镜下,观察到SX组的皮肤切片,表皮萎缩,角化过度,毛囊和皮脂腺的减少,以及基底膜的局部变薄,半桥粒损失和坏死细胞。在SX + EGF组的皮肤切片中,该视图与对照组相似。结果,表皮生长因子被认为在皮肤发育中具有重要作用。

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