假鹰爪化学成分研究(Ⅱ)

目的：寻找番荔枝科假鹰爪属植物假鹰爪Ｄｅｓｍｏｓ ｃｈｉｎｅｎｓｉｓ抗肿瘤活性成分。方法：采用硅胶柱色谱分离化学成分。根据理化性质及波谱分析等方法鉴定结构。结果：从氯仿萃取物中分离鉴定了７个化合物,分别是ｕｎｏｎ－ａｌ（Ⅰ）,黄芩素－７－甲醚（Ⅱ）,去甲氧杜鹃花素（Ⅲ）,去甲氧杜鹃花素－７－甲醚（Ⅳ）,苯甲酸（Ⅴ）,β－谷甾醇（Ⅵ）和豆甾醇（Ⅶ）。结论：该种植中鉴定的黄酮类化合物均为β－环未取代,     

一氧化氮对慢性鼻窦炎鼻息肉粘膜上皮细胞纤毛运动的影响

OBJECTIVE: To investigate the effect of nitric oxide on ciliary beat frequency in human nasal mucosa. METHOD: A primary culture model of human nasal mucosa epithelial cells was established and the effect of nitric oxide on ciliary beat frequency was observed by videomicroscopy method. The data were statistically analyzed using t-test. RESULT: L-arginine significantly increased ciliary beat frequency from (400 +/- 48) beats/min to (793 +/- 68) beats/min (n = 9, P < 0.001), D-arginine had no similar effect, while NOS blocker L-NAME inhibited the effect of L-arginine. CONCLUSION: Cells cultured by our method could synthesize NOS that made L-arginine produce NO that could increase ciliary beat frequency in the human nasal mucosa.     

Decreased frequency of a novel T-lymphocyte subset,CD3+CD4−CD7+CD57− T cells,in hepatitis B virus-related end-stage liver disease might contribute to disease progression

CD7 and CD57 are related to the differentiation and functional stages of CD8⁺ T cells. However, the role of their combined presence in CD8⁺ T cells in patients with chronic hepatitis B virus (HBV) infection, especially those with end-stage liver disease, remains unclear. Blood samples from healthy volunteers and patients with chronic hepatitis B were analyzed via Luminex assay and ELISA to measure plasma cytokine levels. Further, recombinant IL-22 was used to stimulate peripheral blood mononuclear cells from healthy volunteers, and the frequency of CD3⁺CD4⁻CD7⁺CD57⁻ T cells and apoptosis rates were investigated via flow cytometry. Patients with end-stage liver disease, particularly those with acute to chronic liver failure, showed decreased CD3⁺CD4⁻CD7⁺CD57⁻ T cell frequency. Furthermore, the prevalence of CD3⁺CD4⁻CD7⁺CD57⁻ T cells was negatively correlated with disease severity, prognosis, and complications (ascites). We also observed that IL-22 promoted apoptosis and brought about a decrease in the number of CD3⁺CD4⁻CD7⁺CD57⁻ T cells in a dose-dependent manner. CD3⁺CD4⁻CD7⁺CD57⁻ T cells displayed a B and T lymphocyte attenuator (BTLA)^highCD25^highCD127^high immunosuppressive phenotype and showed low interferon-γ, tumor necrosis factor-α, granzyme A, and perforin expression levels. The present findings will elucidate the pathogenesis of HBV-related end-stage liver disease and aid the identification of novel drug targets.     

产后出血致DIC 1例抢救成功

0　引言　我院首次收住1例产后出血合并弥漫性血管内凝血(DIC)患者,经抢救,患者脱险.1　病例报告　女,16岁,未婚,妊7mo,于1999-01-30入院,要求终止妊娠.入院后一般检查无异常,妇科查:阴道正常,宫底位于剑下三指,胎心清,规律.实验室检查:Hb115g.L-1,BT1min,CT2min,WBC14.7×109.L-1.入院第4日,放置水囊,32h后,顺娩一婴,会阴度裂伤.阴道壁无撕裂伤,胎盘子面娩出完整,阴道出血30mL,揉按子宫,阴道仍然出血不止,BP9/7kPa,P140/min.发现阴道流出非血凝块,急诊Hb46g.L-1,Pt31×109.L-1,凝血酶元时间22s,纤维蛋白元1～3g.L-1,尿RBC9～12.…     

The expression of cytokeratin 18 in transitional cell carcinoma comparing with hepatoma

The epithelium in kidneys and urinary bladders contain CK18 as in liver cells. The modulation of cytokeratin 18 during tumor transformation in hepatoma had been previously recognized through a series of biochemical and immunological approaches. A 14 KD hepatoma related molecules was found in the previous studies. We would like to utilize the hepatoma transformation model to study the changes in CK18 in transitional cell carcinoma, using immunoblotting and western blotting techniques. The result is that transitional cell carcinoma retain their CK18 molecule. Furthermore, CK18 related molecules similar to those seen in hepatoma also present in transitional cell carcinoma. The conclusions are transitional cell carcinoma contains CK18 related proteins similar to those seen in hepatoma tissues. We suggest that this element would be responsible for the change during the malignant transformation processes.     

尼龙1010／6及尼龙1010／66动态力学分析

通过动态力学参数温度谱,研究了尼龙１０１０／６、尼龙１０１０／６６两个共聚物系列的动态力学参数与组成的关系。研究表明尼龙１０１０／６、尼龙１０１０／６６在测试温度范围内出现三个明显的松驰转变：α、β、γ,其中各共聚物的β、γ松驰温度相差不大,而α松驰温度随组成改变有明显改变。一般均聚物的α松驰温度较高,共聚物的α松驰温度均低于均聚物,二个系列以尼龙１０１０／６（２９．８／７０．２）、尼龙１０１０／     

Giant inguinal scrotal vesical hernia

Presentation of one case of scrotal hernia in a man of 64 years old patient. Diagnosed by cistography and ultrasound and treated by herniorraphy and posterior transuretral litolaplaxy of a vesical litiasis and RTU of prostate. Postoperative urography showed normal vesical morphology.