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冷向锋 《国外医学:泌尿系统分册》2003,23(3):231-233
前列腺癌的发生除了与多种癌基因和抑癌基因的异常激活和表达有关以外,细胞凋亡过程的抑制也是其形成的重要机制。对凋它分子TRAIL(TNF related apoposis inducing ligand,肿瘤坏死因子相关的凋亡诱导配体)诱导细胞凋亡的机制及其在前列腺癌方面的研究有望成为治疗前列腺癌的新一代药物。 相似文献
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目的探究透明质酸填充注射额颞部导致相关血管栓塞及上睑下垂的原因及防治策略。方法采用透明质酸溶解酶注射治疗,以及输注低分子右旋糖酐、罂粟碱、地塞米松等方法,对额颞部透明质酸注射填充后即刻出现血管栓塞、视力受损、上睑下垂患者进行治疗。结果患者经对症处理,病情得到控制,出院后7 d复查,右上睑恢复正常,视力基本恢复正常。结论额颞部透明质酸填充注射血管栓塞风险仅次于眉间-鼻根区域、鼻唇沟区域等处,出现栓塞时,尽早应用透明质酸酶溶解、扩容扩血管改善循环、局部减压、高压氧治疗及抗感染等急救措施,可预防或控制并发症的产生和进展,最大程度减轻对患者的损害。 相似文献
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目的 通过兔股动脉、静脉预构轴型扩张皮瓣的微循环血流晕动态变化、光镜下结构的改变及其成活面积,为预构轴型扩张皮瓣的临床应用提供依据.方法 选择新西兰白兔40只,随机分为4组:预构轴型扩张皮瓣组、预构轴型不扩张皮瓣组、单纯预构轴型皮瓣组及无蒂游离皮瓣组,每组4只,前2组股动脉、静脉移位后,预构轴型扩张皮瓣组、预构轴型不扩张皮瓣组分别在肉膜深面置入容量为50 ml长方形皮肤软组织扩张器,预构轴型扩张皮瓣组7 d后开始注水;无蒂游离皮瓣组为对照组,未采取预构及扩张处理.定期对4组皮肤进行微循环血流量检测,并取样进行光镜观察.预构术后52 d,前3组形成以预构股动静脉血管束为蒂的岛状皮瓣,游离皮瓣组则形成无蒂游离皮瓣后均原位缝合,观察其成活面积.结果 预构轴型扩张皮瓣组较其他组微循环血流量增加,成活面积大[(97.54±2.73)%],光镜下改变显著(P<0.05).结论 扩张术能促进预构轴型皮瓣的血管化进程,明显增大预构轴型皮瓣成活面积,增加其移植的安全性. 相似文献
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烧伤后增生性瘢痕成纤维细胞中TRAIL受体的表达及意义 总被引:5,自引:0,他引:5
目的检测肿瘤坏死斟子相关凋亡诱导配体(TRAIL)的受体住烧伤后增生期增生性瘢痕成纤维细胞上的表达,并探讨其意义。方法应用RT-PCR和流式细胞术,检测了30例处于增生期的烧伤后增牛性瘢痕成纤维细胞中TRAIL各受体的表达,并以30例正常皮肤成纤维细胞作为对照。结果RT-PCR和流式细胞术的检测结果均显示:与正常对照组相比,增生期瘢痕的成纤维细胞中步匕亡受体DR5的表达显著降低(P〈0.05),诱导受体DcR1的表达显著升高(P〈0.05),其余受体的表达住两组间差异无统计学意义。结论烧伤后增生性瘢痕的形成可能与TRAIL介导的瘢痕内成纤维细胞凋亡受阻有关。 相似文献
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Objective To study the microcirculation and structural changes, surviving area of expanded prefabricated flaps. Methods A total of 40 New Zealand rabbits were divided randomly into expanded prefabricated, expender lined, simple prefabricated and free flap groups, each consisting of 10 rabbits. For the expanded prefabricated, expender lined and simple prefabricated groups, after the femoral artery and vein were transplanted into subcutaneous tissues of abdomen, and expanders were implanted into the deeper dartos. The free flap group was a blank control group. For the expanded prefabricated group, the expansion was carried out on 7th day postoperatively. On postoperative day 52, when the expander was fully expanded, island flaps with the prefabricated vessels as the pedicles were formed. The flaps were measured by laser Doppler flowmetry, light microscopy and digital re-cording of survival arca. Results When compared with the other groups, the perfusion volume of mi-crocirculation enhanced, flaps survival improved (97.54±2.73) %, blood capillary were stronger, to-gether with microscopic changes were significant in the expanded prefabricated groups (P<0.05). Conclusion Expandedprefabricated flaps can increase the survival size of the flaps and the safety of flap transplantation. 相似文献
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Objective To study the microcirculation and structural changes, surviving area of expanded prefabricated flaps. Methods A total of 40 New Zealand rabbits were divided randomly into expanded prefabricated, expender lined, simple prefabricated and free flap groups, each consisting of 10 rabbits. For the expanded prefabricated, expender lined and simple prefabricated groups, after the femoral artery and vein were transplanted into subcutaneous tissues of abdomen, and expanders were implanted into the deeper dartos. The free flap group was a blank control group. For the expanded prefabricated group, the expansion was carried out on 7th day postoperatively. On postoperative day 52, when the expander was fully expanded, island flaps with the prefabricated vessels as the pedicles were formed. The flaps were measured by laser Doppler flowmetry, light microscopy and digital re-cording of survival arca. Results When compared with the other groups, the perfusion volume of mi-crocirculation enhanced, flaps survival improved (97.54±2.73) %, blood capillary were stronger, to-gether with microscopic changes were significant in the expanded prefabricated groups (P<0.05). Conclusion Expandedprefabricated flaps can increase the survival size of the flaps and the safety of flap transplantation. 相似文献