The European Union and Ocean Use Management: The Marine Strategy and the Maritime Policy

Problems resulting from contemporary patterns of ocean use and threats to the viability of the marine environment have led to reconsideration of ocean use governance in a number of states, including the United States, Australia, and Canada. For its part, the European Union has been working on the development of a Marine Strategy to safeguard the environment and a more encompassing Maritime Policy into which the Marine Strategy would be folded. The desired Maritime Policy would reflect a holistic perspective of ocean space, embody an ecosystem-based approach to ocean use management, and provide a broad framework for ocean/coastal management. As has been seen elsewhere, developing such a governance system is difficult both in terms of conceptualization and, subsequently, in operationalization. The June 2006 European Commission Green Paper on Maritime Policy sets the stage for a year of consultations designed to develop an effective governance system for ocean management. Institutional and policy changes will be needed and it will be necessary to balance the objectives of economic growth and protection of environmental sustainability. This article examines current developments in efforts to devise a coherent and integrated European Union approach to ocean management.     

Effects of umbilical cord blood stem cells on healing factors for diabetic foot injuries

The use of stem or progenitor cells from bone marrow, or peripheral or umbilical cord blood is becoming more common for treatment of diabetic foot problems. These cells promote neovascularization by angiogenic factors and they promote epithelium formation by stimulating cell replication and migration under certain pathological conditions. We investigated the role of CD34 + stem cells from human umbilical cord blood in wound healing using a rat model. Rats were randomly divided into a control group and two groups with diabetes induced by a single dose of 55 mg/kg intraperitoneal streptozocin. Scarred areas 5 mm in diameter were created on the feet of all rats. The diabetic rats constituted the diabetes control group and a diabetes + stem cell group with local injection into the wound site of 0.5 × 106 CD34 + stem cells from human umbilical cord blood. The newly formed skin in the foot wounds following CD34 + stem cell treatment showed significantly improvement by immunohistochemistry and TUNEL staining, and were closer to the wound healing of the control group than the untreated diabetic animals. The increase in FGF expression that accompanied the local injection of CD34 + stem cells indicates that FGF stimulation helped prevent apoptosis. Our findings suggest a promising new treatment approach to diabetic wound healing.     

Kinematic analysis of the technique for elite male long-distance speed skaters in curving

The purpose of this study was to investigate technical factors for maintaining skating velocity by kinematic analysis of the skating motion for elite long-distance skaters during the curve phase in official championship races. Sixteen world-class elite male skaters who participated in the 5,000-m race were videotaped with two synchronized high-speed video cameras (250 Hz) in a curve lane by using a panning DLT technique. Three-dimensional coordinates of the body and blades during the first and second halves of the races were collected to calculate kinematic parameters. In the group that maintained greater skating velocity, the thigh angle during the gliding phase of the left stroke during the second half was greater than that during the first half, and the center of mass was located more forward during the second half. Thus, it was suggested that long-distance speed skaters should change the support leg position during the gliding phase in the left stroke of the curve phase under fatigued conditions so that they could extend the support leg with a forward rotation of the thigh and less shank backward rotation.     

Effects of strobilurin containing fungicides on the deoxynivalenol content in winter wheat

The effects of the strobilurin fungicides Juwel, Juwel Top and Amistar on the deoxynivalenol contamination of winter wheat was studied in field experiments. In general, the application of strobilurins during stem elongation and inflorescence emergence of wheat resulted in increased deoxynivalenol contents in kernels as compared with the untreated control. This stimulating effect can be reversed by a following azole fungicide applied within a time period of one week during the stages of flowering.     

免疫毒素的抗肿瘤研究

免疫毒素是由具有导向能力的载体（抗体或细胞因子）和具有细胞毒性的分子（毒素）偶联而成的具有特异性细胞杀伤能力的杂合分子,是一种靶向药物。免疫毒素首先利用肿瘤细胞上导向分子的受体与细胞结合,然后进入细胞,再由毒素发挥蛋白质合成抑制作用,最终导致靶细胞死亡。与其他抗肿瘤药物相比,免疫毒素具有毒性强和特异性高的优点,在肿瘤治疗中显示出巨大的应用前景。简要概述了免疫毒素的作用机理、制备及其抗肿瘤研究进展。     

2’-5’寡聚腺苷酸合成酶（OAS）及其临床意义的研究进展

干扰素作用于靶细胞膜表面的受体后,通过信号转导系统诱导一系列抗病毒蛋白产生,干扰病毒复制以达到抗病毒目的。2’-5’寡聚腺苷酸合成酶（2’．5’oligoadenylatesynthetase,OAS）是干扰素作用于细胞后产生的一种重要的抗病毒蛋白,几十年来,国内外学者对OAS家族及其抗病毒机制进行了大量研究并取得了一定的进展,OAS被dsRNA激活后,催化生成2-5A,2-5A激活核酸内切酶RNaseL,降解病毒RNA,阻断病毒蛋白合成,从而发挥抗病毒作用。体内外研究表明,OAS的表达量或活性的变化可用于评价机体对干扰素的反应,反映干扰素抗病毒效果,另外,它还可作为系统性红斑狼疮的病情活动度的一种检测指标。因此,OAS具有重要的临床应用价值。本文就OAS家族及其抗病毒机制,其测定方法与对于病毒性肝炎和系统性红斑狼疮疾病的临床意义展开综述,以期对OAS的研究和应用提供参考。OAS是典型的干扰素诱导产物,可反映机体内干扰素的抗病毒水平,具有广阔的应用前景。