脑星形细胞瘤中TIP30、VEGF和CD34的表达及其相关性研究

目的探讨脑星形细胞瘤中TIP30、血管内皮生长因子（VEGF）、CD34的表达情况及其病理意义。方法采用免疫组织化学Elivision plus两步法,检测19例正常脑组织及71例星形细胞瘤组织中TIP30、VEGF及CD34的表达。结果TIP30在19例正常脑组织神经胶质细胞及神经元胞质内均呈阳性表达;71例星形细胞瘤组织中,TIP30总阳性表达率为33．80％,随星形细胞瘤分化程度的降低,TIP30的表达逐渐降低,Ⅱ、Ⅲ和Ⅳ级星形细胞瘤中TIP30阳性表达率分别为52％、34．78％和13．04％。高级别星形细胞瘤（Ⅲ级＋Ⅳ级）中TIP30的阳性表达率显著低于其在低级别星形细胞瘤（Ⅱ级）中的阳性表达率（x^2=5．71,P〈0．05）;VEGF及由CD34确定的MVD在星形细胞瘤中表达均高于正常脑组织,且随星形细胞瘤病理级别升高表达逐渐增高;星形细胞瘤中TIP30与VEGF强阳性表达呈负相关关系（r=-0．428,P〈0．05）。而TIP30与MVD无明显相关性（r=-0．065,P〉0．05）。结论TIP30在正常脑组织中阳性表达率高于其在星形细胞瘤中阳性表达率,且随星形细胞瘤病理级别升高表达显著下降;星形细胞瘤中,VEGF的表达与TIP30的表达呈明显的负相关关系。     

脑星形细胞瘤中TIP30、VEGF和CD34的表达及其相关性研究

Objective To investigate the expression and relationship of TIP30(HIV-1 Tat interactive protein 2), vascular endothelial growth factor (VEGF) and MVD (detected by CD34) in the angiogenesis of human brain astrocytomas. Methods Expression of TIP30, VEGF and CD34 in 19 cases of normal brain tissue and 71 cases of astrocytoma were immunohistochemically examined with Elivision plus two-step method. Results The positive expression of TIP30 could be seen in cytoplasm of neuroglial cells and neurons of 19 normal brain tissues. The positive expression rate of TIP30 in 71 cases of astrocytoma was 33.80 % (24/ 71). The positive expression rate of TIP30 in astrocytoma of different grades was 52 % for grade Ⅱ, 34.78 % for grade Ⅲ and 13.04 % for grade Ⅳ. The positive expression rate of TIP30 in high grade (Ⅲ+Ⅳ) of astrocytoma was found significantly lower than that in low grade(Ⅱ) (χ2=5.71, P <0.05); The expression of VEGF and MVD detected by CD34 in astrocytomas were higher than that in normal brain tissue and increased as the tumor grade increased; In astrocytoma, the negtive correlation was found between the expression of TIP30 and VEGF (r=-0.428, P<0.05); no correlation was found between TIP30 and MVD(r=-0.065, P 0.05); the positive correlation was found between VEGF and MVD(r=0.684, P<0.01). Conclusion The positive expression rate of TIP30 in normal brain tissue is significantly higher than that in astrocytoma. The positive expression rate of TIP30 significantly decreases as the pathological grade of the astrocytoma increases; The expression of TIP30 and VEGF is negatively correlated in astrocytoma.     

我行动我健康我快乐

2007年9月1日,全民健康生活方式行动在京启动。卫生部部长陈竺、副部长王陇德,北京市人民政府副市长丁向阳等领导以及来自科技部,农业部,全国总工会,全国妇联,全国各省、自治区、直辖市卫生厅局,世界卫生组织,联合国儿童基金会的300多位代表和北京市600多名社区居民参加了启动仪式。启动仪式上,卫生部向全国人民发出了健康生活方式的倡议,号召全国人民,追求健康,戒烟限酒、合理膳食、适量运动、心情愉快,不断提高健康素质和文明素质。     

Etanercept作用下糖尿病Wistar大鼠牙周炎变化的实验研究

[摘要] 目的 观察肿瘤坏死因子α抑制剂Etanercept对实验性糖尿病Wistar大鼠牙周炎的影响。方法 12周龄Wistar大鼠45只,腹腔内一次性注射STZ诱导糖尿病。结扎糖尿病大鼠牙颈部建立牙周炎模型。将实验糖尿病大鼠分为糖尿病组,糖尿病牙周炎组和糖尿病牙周炎+Etanercept组。观察大鼠的牙龈指数、牙周袋深度、松动度。免疫组化观察IL-1β、IL-6在牙周组织中的表达。结果 糖尿病组大鼠牙龈指数、牙周袋深度、松动度与糖尿病牙周炎组和糖尿病牙周炎+Etanercept组有差别(P<0.05);糖尿病牙周炎组和糖尿病牙周炎+Etanercept组相比有差别(P<0.05)。糖尿病牙周炎组中IL-1β、IL-6表达高于糖尿病组(P<0.05),各时间段糖尿病牙周炎+Etanercept组牙周组织中IL-1β、IL-6表达低于糖尿病牙周炎组(P<0.05)。结论 肿瘤坏死因子α抑制剂Etanercept对实验性糖尿病Wistar大鼠牙周炎有抑制作用。     

应用Vitapex充填糊剂治疗难治陛根尖周炎的体会

慢性根尖周炎或急性根尖周炎的治疗方法主要为根管治疗和牙髓塑化治疗,病变大的或久治不愈的病例还需附加根尖手术治疗。由于牙齿周围解剖条件限制．根尖手术多用于前牙区,后牙区的治疗就显得尤为困难。我院自1998年起．对具有明显根尖手术治疗指征的病例采用Vitapex糊剂根管治疗,现将治疗体会报告如下。