透明质酸在去细胞异体神经移植中对瘢痕的影响

BACKGROUND:In terms of the histocompatibility, immune rejection and scar formation after repair, acellular nerve allograft is closer to autologous nerve cells. At present, hyaluronic acid has been applied for autologous peripheral nerve repair; however, research on the nerve allograft is rarely reported. OBJECTIVE: To explore the effect of hyaluronic acid on the anastomotic scar in acellular nerve allograft repair of rat sciatic nerve defect. METHODS: Thirty-six Sprague-Dawley rats were randomly divided into three groups (n=12 per group). The rat model of nerve defect of 10 mm was established by cutting the sciatic nerve of the left hind leg and then given nerve allograft combined with the injection of hyaluronic acid at anastomosis (experimental group), only nerve allograft (control group) and autologous nerve graft (nerve autograft group), respectively. Afterwards, the healing of the proximal anastomosis was observed and scar components were assessed. RESULTS AND CONCLUSION:Gross observations showed that the rat skin and muscle fascia had no significant differences in healing among groups, while the surrounding tissue adhesion in the experimental group was milder than that in the control group (P < 0.05). Masson staining found that collagen deposition in the epinerium could be observed in each group. In the experimental group, a small amount of collagen fibers arranged orderly in the epineurium; in the control group numerous collagen fibers accumulated and arranged irregularly; in the nerve autograft group, sparse epineurial collagen fibers appeared in an order arrangement. The gray value of collagen type I in the experimental group was higher than that in the control group (P < 0.05), while the gray value of collagen type III was lower than that in the control group (P < 0.05). No significant differences were found in the sum gray values of collagen type I and III among groups (P > 0.05). These findings indicate that in the peripheral nerve repair, hyaluronic acid abrogates the scar formation by increasing the deposition of collagen type III and reducing the deposition of collagen type I. 中国组织工程研究杂志出版内容重点：组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程     

人文关怀在临床护理中的应用效果

目的 讨论人文关怀在临床护理中的应用效果.方法 选取牡丹江医学院附属红旗医院2020年4月～2021年4月收治的住院患者80例作为本次研究对象,采用随机数表法分为对照组、实验组,每组40例.给予对照组患者常规护理,实验组在此基础上给予人文关怀护理干预,观察实验组和对照组各项护理质量评分、护理满意度及心理状态评分.结果 ...