Immunohistochemical expression of matrix metalloproteinases in the granulomatous rosacea compared with the non‐granulomatous rosacea

Background There is a granulomatous variant which is recognized in the rosacea spectrum. However, the pathogenesis of granuloma formation in rosacea has not been clearly demonstrated. Matrix metalloproteinases (MMPs) are required for recruitment of inflammatory cells and for tissue remodelling, making way for the development of well‐organized granuloma. Objective The aim of this study was to investigate the expression of transforming growth factor (TGF)‐β, TGF‐β type II receptor (TβRII), Tumour necrosis factor (TNF)‐α, MMP‐1, 2 and 9 in the granulomatous rosacea (GR) compared with the non‐granulomatous rosacea (NGR) and test the hypothesis that the changes of these profiles in GR would be related with chronic ultraviolet radiation (UVR)‐exposure. Methods Facial skin samples were obtained from 20 patients with GR and NGR (control group). The sections were stained using haematoxylin and eosin, Verhoeff’s elastic stain, and antibodies to TGF‐β, TβRII, TNF‐α, MMP‐1, ‐2 and ‐9. Results The amount of elastotic material was significantly increased in the dermis of GR lesions. Expression of TGF‐β was significantly decreased in the epidermis of GR lesions compared with NGR lesions. In addition, the expression of MMP‐9 was significantly increased in the dermis of GR lesions compared with NGR lesions, especially at the centre of the granuloma on a semi‐quantitative analysis. MMP‐2 expression was also increased in GR lesions, although the difference between the two groups was not statistically significant. Conclusions The results of this study suggest that the increased expression of MMPs in the dermis may participate in granuloma formation of GR in association with UVR.     

纳米银医用抗菌敷料在小儿泌尿外科手术创面的应用特点

目的:阴茎包皮系神经末梢最敏感部位之一,观察纳米银医用抗菌敷料用于包皮手术后创面的止痛防粘连效果,并与普通凡士林油纱相比较。方法:选择解放军总医院小儿外科2006-01/08收治住院手术的包茎、包皮过长、尿道下裂患儿220例,随机分为纳米银敷料组和对照组各110例。纳米银敷料组患儿术后创面覆盖以无菌生理盐水打湿后的纳米银医用抗菌敷料,对照组使用普通凡士林油纱包扎伤口,术后第3,5,7天换药。比较两组患儿术后第1,3,5,7天的疼痛感受及创面愈合情况。结果:220例患儿均进入结果分析。纳米银敷料组术后第1,3,5天疼痛较对照组轻(P<0.01);且纳米银敷料比普通油纱更容易从创面分离,换药所需时间短,换药过程不会引起创面渗血和患儿疼痛;术后第5天纳米银敷料组创面面积小于对照组(P=0.041);两组均未发现材料宿主反应。结论:纳米银医用抗菌敷料用于包皮的换药具有明确的防粘连、促进创面愈合、止痛的作用,其效果优于普通凡士林油纱。     

小鼠皮肤快速冷冻：体外长期保存的方法

为探讨小鼠皮肤体外长期保存的方法,选择清洁级8周龄雄性昆明小鼠40只,随机数字表法分为冷冻皮肤移植组(30只)和新鲜皮肤移植组(10只)。皮肤冷冻采用二步法冷冻,用冷冻液EFS40对皮肤进行快速玻璃化冷冻,用0.5 mol/L蔗糖液解冻,解冻后小鼠皮肤自体移植,冷冻皮肤移植组于2周后接受经过冷冻解冻处理后自体皮肤移植,移植时在脊柱的另一侧剪去略小于植片的皮肤,将皮片平铺于植床上,吻合后缝合。新鲜皮肤移植组备皮后,将皮片置于杜氏磷酸缓冲液中15 min后移植于原来部位。移植14,28d进行移植效果的评价。结果表明,①新鲜皮肤移植成活率达到100%(10/10)。②解冻后皮肤移植14,28d成活率分别为77%(23/30),70%(21/30)。冷冻过程也造成小鼠皮肤表皮层和毛囊部分细胞损伤。因此,小鼠皮肤快速冷冻可以作为一种皮肤体外保存的方法。     

瘤体内注射卡铂和消痔灵对荷瘤鼠的抗肿瘤作用及其毒性

目的：观察瘤内注射（it)卡铂（CBP）和消痔灵（XZL）的抗肿瘤作用。方法：选用小鼠S180实验体瘤模型,it XZL,it及静脉注射（iv)CBP治疗,测定各组小鼠的瘤重,体重,脾指数和胸腺指数。结果：与生理盐水（NS）组比较,iv CBP 30mg/kg,it XZL 10ml/kg和it CBP 30,60mg/kg的抑瘤率分别为20．23％和,25．6％,27．4％和41．9％,脾指数变化分别为－41．0％,12．2％－28．4和－49．2％,胸腺指数变化分别为－8．5％,33．0％,－5．3％和－12．8％。结论：it CBP和XZL均有抗肿瘤作用,CBP降低荷瘤鼠免疫器官指数,而ZL则增加荷瘤鼠免疫器官指数。     

宫颈分泌物153例支原体培养及药敏分析

1 临床资料2003-01/2004-09我院妇科门诊生殖道感染患者153例,年龄18～42(平均28.6)岁,病程0.5～12(平均2.0)mo.