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31.
Localized scleroderma is distinct from the diffuse form of scleroderma and does not show Raynaud's phenomenon and visceral involvement. The imaging features in 23 patients ranging from 2 to 17 years of age (mean 11.1 years) were reviewed. Leg length discrepancy and muscle atrophy were the most common findings (five patients), with two patients also showing modelling deformity of the fibula. One patient with lower extremity involvement showed abnormal bone marrow signals on MR. Disabling joint contracture requiring orthopedic intervention was noted in one patient. In two patients with en coup de sabre facial deformity, CT and MR scans revealed intracranial calcifications and white matter abnormality in the ipsilateral frontal lobes, with one also showing migrational abnormality. In a third patient, CT revealed white matter abnormality in the ipsilateral parietal lobe. In one patient with progressive facial hemiatrophy, CT and MR scans showed the underlying hypoplastic left maxillary antrum and cheek. Imaging studies of areas of clinical concern revealed positive findings in half our patients. 相似文献
32.
Wang CR Liu ST Liu MF Lee GL Wang GR Chuang CY 《Asian Pacific journal of allergy and immunology / launched by the Allergy and Immunology Society of Thailand》1999,17(4):249-254
The IFN-gamma produced by Th1 cells and IL-4 produced by Th2 cells are two most important cytokines in the regulation of IgE production. House dust immunotherapy has been tried in the treatment of house dust-sensitive Chinese asthmatic patients with good results. We examined the influence of such treatment on in vitro IL-4 and IFN-gamma production by peripheral blood mononuclear cells in house dust-sensitive asthmatic patients. Allergen immunotherapy in house-dust sensitive asthmatic patients can significantly decrease IL-4 production from peripheral mononuclear cells (p<0.05). The production levels of IL-4 in patients without treatment had higher levels than those in patients with hyposensitization (p<0.01). Such therapy also have some effect on promotion of IFN-gamma production in asthmatic patients. In conclusion, immunotherapy with house dust may have the potential ability to shift the Th1/Th2 balance of immune response to allergens and to create a favorable cytokine microenvironment to suppress the allergic reaction in the asthmatic airway. 相似文献
33.
This prospective, randomised, placebo-controlled, double-blind study was performed to evaluate the effects of ondansetron on nausea and vomiting during elective Caesarean section under spinal anaesthesia. Seventy-four full-term parturients were studied. After umbilical-cord clamping, ondansetron 4 mg or 0.9% saline was injected intravenously and the study period continued for 2 h. The severity of nausea was graded from 0 = none to 10 = maximum, while that of vomiting was graded from single = once per min to continuous = multiple per min. The incidence of vomiting was lower following ondansetron (36%) compared with the control group (58%, p < 0.028). Neither the severity of vomiting nor the incidence of nausea was influenced by ondansetron. However, for those who experienced nausea, ondansetron reduced its severity (p = 0.05). We conclude that the intra-operative administration of 4 mg ondansetron intravenously during Caesarean section under spinal anaesthesia significantly reduces the incidence of vomiting and the severity of nausea. 相似文献
34.
目的:研究蛋脑啡肽对猴免疫缺陷病毒(SIV)感染CEM×174 细胞kappa 阿片受体表达的调节作用。方法:用SIV 感染CEM×174 细胞并加入不同浓度蛋脑啡肽。在24 h 提取RNA,用RT-PCR 方法扩增kappa 阿片受体m RNA 并且进行定量分析。结果:显示SIV 能够抑制CEM×174 细胞的生长。在10- 7m ol/L蛋脑啡肽存在下,SIV 对细胞的损害减轻。10- 7m ol/L和10- 6m ol/L蛋脑啡肽不能改变正常细胞kappa 阿片受体的表达,但是在SIV 感染组的表达显著增高。结论:实验结果提示蛋脑啡肽能够维持正常淋巴细胞的生长。Kappa 阿片受体表达的改变可能与蛋脑啡肽对免疫细胞的调节机理有关 相似文献
35.
El-Harazi SM Feldman RM Villanueva G Carter-Dawson L Mietz H Chuang AZ 《Journal of glaucoma》1999,8(6):374-379
PURPOSE: Mitomycin C (MMC) is commonly administered during filtering surgery to enhance the success of the procedure. Unfortunately, the increased success rate is associated with complications, including late bleb leaks, endophthalmitis, and ciliary epithelial toxicity. The purpose of this study was to investigate a safe and effective dose regimen for MMC to reduce incidence of those complications. METHODS: Trabeculectomy was performed in 36 rabbits. MMC was applied only during surgery, only one day after surgery, or once daily after surgery for 3 days at lower concentrations. Balanced salt solution (BSS) was administered during surgery to one group as a placebo. The time to bleb failure was determined and the eyes were evaluated histopathologically. Success and toxicity were compared for the different treatment groups. RESULTS: The mean time until trabeculectomy failure was 2.83 days for the placebo group, 6.33 days with administration of MMC 0.5 mg/mL during surgery, 7.83 days with administration of MMC 0.5 mg/mL once after surgery, and 11, 9, and 4.83 days with administration of MMC 0.1 mg/mL, 0.05 mg/mL, or 0.025 mg/mL, respectively, once a day for 3 consecutive days. On electron microscopic examination of the ciliary epithelium, toxic effects were greatest with MMC concentrations of 0.5 mg/mL and were less with lower concentrations. CONCLUSION: The effect of MMC on trabeculectomy survival was dependent on both the concentration and the method of administration. Lower concentrations with multiple postoperative administrations were as effective as but caused less ciliary body toxicity than intraoperative administration of higher concentrations. 相似文献
36.
Effects of nonsteroidal anti-inflammatory drugs and prostaglandins on osteoblastic functions. 总被引:3,自引:0,他引:3
It has been reported that nonsteroidal anti-inflammatory drugs (NSAIDs) suppress bone repair and bone remodeling but only mildly inhibit bone mineralization at the earlier stage of the repair process. We proposed that the proliferation and/or the earlier stage of differentiation of osteoblasts may be affected by NSAIDs. This study was designed to investigate whether NSAIDs affect the proliferation and/or differentiation of osteoblasts and whether these effects are prostaglandin (PG) mediated. The effects of PGE1 and PGE2, indomethacin, and ketorolac on thymidine incorporation, cell count, intracellular alkaline phosphatase (ALP) activity, and Type I collagen content in osteoblast-enriched cultures derived from fetal calvaria were evaluated. The results showed that both PGs and NSAIDs inhibited DNA synthesis and cell mitosis in a time- and concentration-dependent manner. However, intracellular ALP activity and Type I collagen content were stimulated at an earlier stage of differentiation in osteoblasts. These results suggested that (i) the inhibitory effect of ketorolac on osteoblastic proliferation contributes to its suppressive effects on bone repair and remodeling in vivo; (ii) PGEs and NSAIDs may be involved in matrix maturation and biologic bone mineralization in the earlier stage of osteoblast differentiation; and (iii) the effects of ketorolac and indomethacin on cell proliferation and differentiation may not be through the inhibition of the synthesis of PGE1 or PGE2. 相似文献
37.
细辛脑片剂的生物利用度 总被引:17,自引:0,他引:17
吴闯 《中国医院药学杂志》2003,23(10):597-598
目的 :比较两种不同生产工艺的细辛脑片剂生物利用度。方法 :18名健康志愿者单剂量随机交叉口服不同生产工艺的片剂 1和片剂 2 16 0mg ,及静脉注射细辛脑针剂 16mg后 ,用反相高效液相色谱法测定细辛脑血清浓度 ,对AUC0~∞ ,Cmax和Tmax3个参数进行等效性检验。结果 :片剂 1和片剂 2的绝对生物利用度分别为 (5 .4± 1.6 ) %和 (9.7± 2 .5 ) % ,片剂 2对片剂 1的相对生物利用度为 (181.9± 15 .2 ) %。结论 :经生产工艺改造后的片剂 2生物利用度比原生产工艺片剂 1提高81.9% ,但是 ,细辛脑片剂的绝对生物利用度仍很低。 相似文献
38.
目的在简介磷脂的基础上 ,概括了磷脂类似物和磷脂聚合物的合成方法及其在医药领域中的应用。方法在参阅国内外相关文献的基础上 ,进行分析、整理和归纳。结果磷脂聚合物的合成方法已经发展的比较成熟 ,但是在医药方面的应用主要限于磷脂聚合物型脂质体、聚乙二醇(PEG)修饰型脂质体和磷脂修饰型聚合物。结论具有两亲性和生物相容性的磷脂及其聚合物在医药领域具有广泛的发展前景 相似文献
39.
针刺手法的运用是针灸临床治疗的一个关键环节。针刺手法的基本功锻炼是提高针刺手法操作技术的重要途径。本文详细介绍了针刺手法基本功锻炼的步骤和方法。 相似文献
40.
PURPOSE: We describe the establishment and preliminary characterization of a cell line designated SCRC-1, which was derived from a primary renal small cell carcinoma. MATERIALS AND METHODS: Continuous cultures of a primary stage IVa renal small cell carcinoma and a xenograft in nude mice derived therefrom were characterized by immunohistology, electron microscopy, immunofluorescence/flow cytometry, cytogenetic analysis, and an in vitro drug resistance assay. RESULTS: SCRC-1 cells were reactive with antibodies to NSE, chromogranin-A, bombesin, Bcl-2, CD44s, CD44v6, CD44v7 to 8, vimentin and S100 protein (predominantly beta-subunit), and were unreactive with antibodies to EMA, CD54, EGFR(R1), URO-5, URO-7, URO-8 and URO-10. A similar immunoprofile was also found in both the primary tumor and the xenograft. Cytogenetic analysis revealed the following common clonal aberrations in all 50 metaphases analyzed: 45, XX, t (X;10;18) (p11;p11;q11), -der(18)t(X;10;18), indicating the clonal nature of this neoplasm. SCRC-1 cells showed low drug resistance to cyclophosphamide, doxorubicin, gemcitabine and fluorouracil, intermediate resistance to carmustine and mitomycin-C, and extreme resistance to cisplatin. CONCLUSION: We have documented the initial characterization of SCRC-1, which may be the first cell line reported to be derived from a primary small cell carcinoma of the kidney. This cell line can be used for further studies uncovering the biology and histogenesis of this rare cancer and delineating differences among small cell carcinomas of the kidney and other histological types. 相似文献