排序方式: 共有44条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
目的探讨原发性胃淋巴瘤的多层螺旋CT表现,以提高对其诊断水平。方法对30例经病理确诊原发性胃淋巴瘤CT资料进行回顾性分析。结果本组30例原发性胃淋巴瘤均为非霍奇金淋巴瘤。12例侵及胃窦,8例侵及胃体,3例侵及胃底,1例侵及贲门部,6例侵及胃多部位。15例胃周见肿大淋巴结。浸润型20例,肿块型3例,溃疡型7例。30例均见胃壁局限性或弥漫性增厚,17例中度强化,13例明显强化。15例可见粗大黏膜强化,15例可见浆膜毛糙。结论原发性胃淋巴瘤CT影像学有一定的特征性,对其诊断有重要意义。 相似文献
6.
The action mechanism of matrix metalloproteinases-2 (MMP-2) and tissue inhibitor of metalloproteinases-2 (TIMP-2) in the genesis, development and degeneration of haemangioma was investigated by detecting their expression in the tissue of haemangioma in different phases by using the immunohistochemistry. Fifty paraffin-embedded specimens of skin capillary haemangioma were collected, which were documented in the Department of Pathology, Renmin Hospital of Wuhan University from 2000 to 2006. All samples were stained by regular HE method, and proliferative cell nuclear antigen (PCNA) was tested by immunohistochemical S-P method. The samples were classified according to the Mulliken criteria and the expression pattern of PCNA. Immunohistochemical S-P method was ap- plied to detect the expression of MMP-2 and TIMP-2 in proliferative and degenerative phases of cutaneous capillary haemangioma, and in normal skin tissues. In combination with the detection of the expression of factor Ⅷ-related antigen, it was verified that in haemangioma tissues, the cells expressing MMP-2 and TIMP-2 were vascular endothelial cells. The MMP-2 and TIMP-2 expression was quantitatively analyzed by image analysis system (HPIAS-1000), and one-way ANOVA(107) and SNK(q) test were done to analyze average absorbance (A) and positive area rate of immunohistochemically positive particles by using SPSS11.5. The results showed: (1) Among 50 samples of haemangioma, there were 26 proliferative haemangiomas, and 24 degenerative haemangiomas, respectively; (2) The expression of MMP-2 was weak in normal vascular endothelial cells, cytoplasm of connective tissues and extracellular matrix around blood vessels. The expression of MMP-2 in proliferative group was significantly higher than in degenerative group and control group (normal skin) (P〈0.05), but there was no statistically significant difference between the latter two groups; (3) TIMP-2 was highly expressed in normal tissues, degenerative vascular endothelial cells, cytoplasm of connective tissues and extracellular matrix around blood vessels. The expression level of TIMP-2 in proliferative phase was significantly lower than in degenerative phase (P〈0.05), and the expression of TIMP-2 in proliferative phase was significantly different from that in degenerative phase and normal tissues (P〈0.05). It was concluded that in proliferative phase of haemangioma, MMP-2 may promote over-proliferation of endothelial cells of haemangioma, and in degenerative phase, TIMP-2 can inhibit the proliferation of endothelial cells of haemangioma. The two substances play important roles in the genesis, development and degeneration of haemangiomas. 相似文献
7.
目的 考评亚健康评定量表(SHMS V1.0)应用于广州市大学生的结构效度,为进一步分析该群体的健康状况及影响因素奠定基础.方法 采用分层随机抽样的方法选取900名广州市大学生进行问卷调查,分别采用SPSS20.0和AMOS21.0进行探索性因子分析(EFA)和验证性因子分析(CFA).结果 EFA 得到7个特征值大于1的因子,累积方差贡献率为56.766%,且7个因子与SHMS V1.0的理论结构基本吻合.CFA对总量表和3个子量表均进行了模型的拟合,结果显示3个子量表的拟合较好,总量表的拟合结果可以接受,但未达到理想效果.对总量表进行了5次修正,修正后总量表的拟合指标为:卡方自由度比值(CMIN/DF)=2.723、拟合优度指数(GFI)=0.907、增值拟合指数(IFI)=0.917、非规范拟合指数(TLI)=0.905、比较拟合指数(CFI)=0.917、近似误差均方根(RMSEA)=0.046,拟合效果较优.结论 亚健康评定量表维度的划分基本合理,使用该量表测量广州市大学生的亚健康状况具有较好的结构效度. 相似文献
8.
目的 分析残疾儿童生活质量现状及其影响因素。方法 2019年12月至2020年1月以及2020年8月至9月,方便抽样方法选取上海市残疾儿童照护者285例,采用欧洲五维健康量表儿童和青少年版(EQ-5D-Y)对残疾儿童进行生活质量测量。采用多元线性逐步回归分析探讨儿童个体因素、照护者因素、环境因素(家庭因素和社会因素)对儿童生活质量的影响。结果 残疾儿童视觉模拟量表(VAS)评分较低(71.66±22.33)。肢体残疾(B = -13.623, 95%CI -25.282~-1.965, P = 0.022)、多重残疾(B = -14.911, 95%CI -27.445~-2.377, P = 0.020),并发疾病(B = -8.995, 95%CI -14.780~-3.210, P = 0.002),情绪不稳定(B = -4.414, 95%CI -7.433~-1.395, P = 0.004),伙伴关系不好(B = 4.965, 95%CI 1.748~8.181, P = 0.003),无学前教育(B = -7.757, 95%CI -12.954~-2.561, P = 0.004),祖辈作为主要照护者(B = -7.999, 95%CI -14.288~-1.710, P = 0.013)的儿童生活质量较差。结论 残疾儿童的生活质量不高,受儿童个体、照护者及环境多维因素的共同影响,其中主要影响因素为个体因素和照护者因素。 相似文献
9.
目的 探讨残疾儿童照护者的生活质量及其影响因素。方法 2019年12月至2020年1月以及2020年8月至9月,方便抽样选取上海市残疾儿童主要照护者496例。采用简版生活质量量表(SF-12)测量照护者生活质量,以多元线性回归方法分析照护者生活质量的相关影响因素。结果 残疾儿童照护者的生理健康评分为(51.67±8.11),心理健康评分为(42.10±12.66)。被照护儿童年龄6~18岁(B = -1.783, 95%CI -3.279~-0.287, P = 0.020)、情绪不稳定(B = 2.719, 95%CI 1.254~4.184, P < 0.001)、照护者为女性(B = -3.765, 95%CI -6.578~-0.953, P = 0.009)、对公共政策不满意(B = 1.973, 95%CI 0.367~3.578, P = 0.016)的照护者生理健康评分较低;言语残疾(B = 3.463, 95%CI 0.053~6.873, P = 0.047)的照护者生理健康评分较高。被照护儿童的残疾类型(B听力 = 9.465, 95%CI 5.107~13.823, P < 0.001; B未定残 = 5.999, 95%CI 1.558~10.441, P = 0.008)、有无伙伴(B = 2.626, 95%CI 0.352~4.901, P = 0.024)、照护者学历(B高中或中专 = -4.701, 95%CI -8.028~-1.374, P = 0.006; B大专及以上 = -3.610, 95%CI -6.604~-0.615, P = 0.018)、家庭规模(B = 2.616, 95%CI 0.479~4.753, P = 0.017)、家庭人均月收入(B < 5000元= -6.572, 95%CI -9.136~-4.008, P < 0.001; B5000~< 10000元 = -4.932, 95%CI -7.544~-2.319, P < 0.001)对照护者的心理健康评分有影响。结论 残疾儿童照护者的生活质量较低,尤其是心理健康。残疾儿童照护者的生活质量受儿童、照护者、家庭和社会环境等多个维度因素的影响。 相似文献
10.
目的:选定猕猴桃根粗多糖的脱色材料,确定脱色工艺条件。方法:建立猕猴桃根多糖的含量测定方法,以脱色率为指标,采用单因素试验法,通过优化与比较聚酰胺和DA201型大孔吸附树脂对猕猴桃根粗多糖的脱色作用。结果:聚酰胺对RACP中的色素具有较大的吸附容量和选择性,选定聚酰胺静态吸附法对猕猴桃根粗多糖进行脱色,脱色工艺条件为:多糖浓度2mg/mL,药脂比60mg∶1g,pH5,室温下吸附80min。以该工艺处理猕猴桃根粗多糖,脱色率可达78%,多糖保留率大于85%。结论:建立的猕猴桃根粗多糖的的脱色方法与工艺,简单、可行。 相似文献