氨基糖苷类抗生素的发展历程

抗生素的定义，首先来自于20世纪40年代链霉素的发现。在随后的几十年中，其他氨基糖苷类抗生素家族被大量发现并广泛应用，一度成为抗革兰阴性菌感染的首选抗生素。但由于其毒副作用较大，并且细菌对其不断产生耐药性，加上其他结构类别的新型抗生素的不断发现，使其一度几乎退出历史舞台。然而随着多重耐药细菌引起的感染率急剧上升，人们开始关注氨基糖苷类抗生素作为几种重要的治疗革兰阴性病原体的方案之一，并且发掘了其在治疗感染性疾病、艾滋病和遗传性疾病的潜力，使这个“老牌”抗生素重焕生机。     

The Impact of Community Diversity and Consolidated Inequality on Dropping Out of High School

Abstract: Data from the National Education Longitudinal Study were combined with census data at the zip code level to examine the impact of neighborhood racial and ethnic diversity and consolidated inequality, in addition to individual, family, and school factors, on the likelihood of dropping out of high school. Results indicate that while the effects for diversity and consolidated inequality did not support the stated hypotheses, main effects for family risk and prior academic achievement were significant and in the stated direction. Also, when controlling for individual, family, school, and neighborhood characteristics, African Americans were less likely than White students to drop out of school. Implications for contextual effects research and educational outcomes are discussed.     

牙冠延长术在残根残冠修复中的临床疗效

目的评价牙冠延长术在牙体缺损达龈下的残根残冠修复中的临床疗效。方法自2004年5月至2005年6月,对32例患者的36颗牙体缺损达龈下的患牙,术前按断端位于龈下最深距离分为A组(20颗患牙,距离<3.0mm)和B组(16颗患牙,3.0mm≤距离≤4.0mm),均采用牙冠延长术暴露龈下牙体断面,术后6周行桩冠修复。分别记录和比较手术前、后牙周探诊深度(PD)、菌斑指数(PLI)、龈沟出血指数(SBI)和牙齿松动度,以观察临床疗效。结果术后随访患者6个月,两组病例术后6周牙体断端均暴露较好、龈缘颜色正常,术后修复效果有效率为100%,满意率为77.78%。A组术后无松动,修复效果满意;B组术后50.00%出现Ⅰ度松动,修复效果欠佳,两组修复效果比较差异有显著意义(P<0.05)。术后各阶段两组的PD、PLI、SBI均明显优于术前(P<0.05),但两组术后牙周指数比较差异无显著意义(P>0.05)。结论牙冠延长术有利于残根残冠的保存和修复,但要注意适应证的选择。     

Association between commensal bacteria and opportunistic pathogens in the dental plaque of elderly individuals

Opportunistic infections in the oral cavity of the elderly may increase the incidence of systemic disease. The objective of this study was to investigate the differences in the oral bacterial flora between dependent elderly (inpatients) and independent elderly (community-dwelling residents). After multiple variables were taken into account, inpatients had significantly lower detection rates than community-dwelling residents for alpha-streptococci (p < 0.001) and Neisseria (p 0.004), and higher detection rates for Pseudomonas aeruginosa (p 0.024), methicillin-resistant Staphylococcus aureus (MRSA) (p 0.011) and Actinomyces spp. (p 0.005). Among inpatients, the requirement for a high degree of care was related negatively to detection of alpha-streptococci, but was related significantly to detection of P. aeruginosa (p 0.018) or MRSA (p 0.004). Tube-fed inpatients had a significantly lower detection rate for alpha-streptococci (p 0.041) and a higher detection rate for P. aeruginosa (p 0.004) than those who did not require tube feeding. Inpatients with a history of antibiotic use had a significantly lower detection rate for alpha-streptococci (p 0.049) and a higher detection rate for MRSA (p 0.007) than those without a history of antibiotic use. The detection rates for P. aeruginosa or MRSA in inpatients without alpha-streptococci were higher than in inpatients with alpha-streptococci after controlling for age and gender (P. aeruginosa, p 0.006; MRSA, p 0.001). Overall, detection of alpha-streptococci had an inverse correlation with the detection of P. aeruginosa and MRSA in the oral cavity and is likely to be an indicator of pathogenic bacterial infection.     

'A good person does not feel envy': envy in a nursing community

The definition of envy is commonly based on psychoanalytical views of organizational culture. The purpose of this paper is to describe envy in a nursing community. The population study consisted of random sample of 120 subjects drawn from among the employees of one central hospital in Finland. The study material consisted of data collected by questionnaires (response rate 65%). The data were processed by various statistical methods. Open-ended questions were analysed by inductive content analysis. The results of this study indicated that the employee's view of his/her official position in the nursing community, his/her relationships with his/her fellow workers and the management as well as relationships with other nursing communities are all related to envy. The employee's view of his/her official position intensified his/her feelings of envy, if he/she had other negative feelings, anxiety, dissatisfaction with him/herself, and negative feelings towards fellow workers. The major object of envy was fellow workers' salaries. Envy towards other nursing communities was generated by alleged differences in the amount of labour, or by the charge nurse's greater interest in other sections. Employees coped with envy by hiding these feelings and being modest. Women coped with envy by being silent, while men denied the value of the object of envy.     

Principles and strategies of effective community participation

A framework is offered for understanding the conceptual basisand the strategic implications of community participation, inachieving Health for All goals. Special focus is given to themeaning, settings and levels of participation in official decision-makingstructures and at the community level. Questions such ‘howis participation facilitated?’, ‘who participates?’and ‘what are the benefits and obstacles to participation?’are geared primarily towards the needs of individuals who functionat the city level and expect practical strategic advice andguidance. The structure of the 1989 WHO Healthy Cities Symposiumwhich was devoted to community action was based on the frameworkand conceptual approach of this paper.     

A study to explore the role of a community oncology nurse specialist

Cancer patients are increasingly being cared for in the community. However, the role of the community oncology nurse specialist (CONS) remains a rare appointment in the United Kingdom. There is little research evidence to substantiate the view that this is a worthwhile and effective role. This study aimed to explore the role of one CONS using a qualitative case study approach. The sample consisted of the CONS, seven patients, no relatives and five community nurses. Semi-structured interviews were used to elicit the view of these participants. In addition, documents containing details of the CONS's work to date were reviewed. A number of the CONS's role components were identified by the different respondent groups. Five themes were identified within the data collected: functions of the CONS, communication between the CONS and other health care professionals, structural and organizational factors, characteristics of the service and benefits to patients and their families. Furthermore, all respondent groups were positive about the service offered by the CONS, and felt that the role was valuable. Some negative features were identified and these were concerned with organizational aspects of the service. The findings suggest the need for further research and evaluation in this area.     

'This isn't very typical I'm afraid': observing community care complaints procedures

The new complaints procedures which local authority social services departments have been required to introduce represent an important mechanism for managing the change of culture associated with recent community care reforms. They also represent a new genre in mechanisms of redress for welfare recipients. This paper reports the findings of a study which has observed considerable diversity in the ways in which local authorities are interpreting the nature and purposes of the new procedures and, in particular, the functions of review panels established under those procedures. Variations in the composition of panels, in the style of review panel proceedings, in perceptions of the panels' powers, and in the ways that complaints and complainants are constituted are all discussed. Attention is drawn to four competing interpretations of the review panels' role and to the need for these to be clarified and prioritised.     

儿童呼吸道苛养菌分离培养及药敏分析

目的：分析儿童呼吸道苛养菌的感染率及常用抗生素的耐药状况。方法：采用儿童呼吸道2050份咽拭子及痰标本进行苛养菌分离培养与鉴定，并对其中617株苛养菌做了药敏试验，结果：显示275株肺炎链球菌，耐药率较高的有红霉素81.1%，苯唑西林76.9%，复方磺胺甲恶唑76.9%，四环素65.4%；104株流感嗜血杆菌、184株副流感嗜血杆菌、54株卡他莫拉菌对氨苄西林耐药率分别为17.6%,28.9%,64.9%，对亚胺培南/西司他丁耐药率分别为16.4%，16.5%，0，同时复方磺胺甲恶唑的耐药率也分别高达56.7%，56.7%，64.9%。结论：提示苛养菌在儿童呼吸道感染中占有重要的地位，及时掌握这类细菌的耐药动态，对合理使用抗生素，延缓耐药株的产生有极其重要的临床意义。     

Healthy communities: reflections on building alliances in Canada. A view from the middle

The author is currently working in the office of Health Promotion,Ministry of Health in British Columbia. For the past 17 yearsshe has worked in Health and Welfare Canada as an advocate forcitizen participation in developing health programs and policies. This article is based on her experience as an advocate and bureaucratin translating and mediating health promotion rhetoric intoaction. The Canadian Healthy Communities and Strengthening Communitiesprojects are used as examples in analyzing the opportunitiesand contradictions in building alliances.