骨髓间充质干细胞的视网膜保护研究进展

骨髓间充质干细胞( bone marrow mesenchymal stem cells, BMSCs)富集于骨髓,可跨胚层分化,是一种具有多向分化潜能的成体干细胞。 BMSC易于分离培养,可高效扩增和表达,具有组织修复能力。由于其具有免疫调节能力,能分泌神经营养因子,使BMSC可以作为移植治疗视网膜疾病的种子细胞。本文将对BMSCs的视网膜保护研究进展作一综述。     

中药联合激光光凝治疗糖尿病视网膜病变

糖尿病视网膜病变(diabetic retinopathy,DR)是糖尿病眼病不可逆盲的最严重的并发症,严重影响患者的生存质量。目前,我国在DR手术治疗方面已进行了广泛的开展,对于增殖前期DR,增殖期糖尿病视网膜病变(proliferative DR,PDR)采取全视网膜光凝术,破坏缺血区视网膜,减少需氧量,以防止新生血管形成,阻止病情恶化。中医药对治疗DR有着非常丰富及个性化的治疗方案,本文就中药联合激光光凝治疗DR的研究进行综述。     

Effectiveness of Evidence-based Pneumonia CPOE Order Sets Measured by Health Outcomes

Objective

Evidence-based sets of medical orders for the treatment of patients with common conditions have the potential to induce greater efficiency and convenience across the system, along with more consistent health outcomes. Despite ongoing utilization of order sets, quantitative evidence of their effectiveness is lacking. In this study, conducted at Advocate Health Care in Illinois, we quantitatively analyzed the benefits of community acquired pneumonia order sets as measured by mortality, readmission, and length of stay (LOS) outcomes.

Methods

In this study, we examined five years (2007–2011) of computerized physician order entry (CPOE) data from two city and two suburban community care hospitals. Mortality and readmissions benefits were analyzed by comparing “order set” and “no order set” groups of adult patients using logistic regression, Pearson’s chi-squared, and Fisher’s exact methods. LOS was calculated by applying one-way ANOVA and the Mann-Whitney U test, supplemented by analysis of comorbidity via the Charlson Comorbidity Index.

Results

The results indicate that patient treatment orders placed via electronic sets were effective in reducing mortality [OR=1.787; 95% CF 1.170-2.730; P=.061], readmissions [OR=1.362; 95% CF 1.015-1.827; P=.039], and LOS [F (1,5087)=6.885, P=.009, 4.79 days (no order set group) vs. 4.32 days (order set group)].

Conclusion

Evidence-based ordering practices have the potential to improve pneumonia outcomes through reduction of mortality, hospital readmissions, and cost of care. However, the practice must be part of a larger strategic effort to reduce variability in patient care processes. Further experimental and/or observational studies are required to reduce the barriers to retrospective patient care analyses.     

Are HIV-positive presumptive tuberculosis patients without tuberculosis getting the care they need in Zimbabwe?

Setting: Emakhandeni Clinic provides decentralised and integrated tuberculosis (TB) and human immunodeficiency virus (HIV) care in Bulawayo, Zimbabwe.Objectives: To compare HIV care for presumptive TB patients with and without TB registered in 2013.Design: Retrospective cohort study using routine programme data.Results: Of 422 registered presumptive TB patients, 26% were already known to be HIV-positive. Among the remaining 315 patients, 255 (81%) were tested for HIV, of whom 190 (75%) tested HIV-positive. Of these, 26% were diagnosed with TB and 71% without TB (3% had no TB result recorded). For the 134 patients without TB, antiretroviral treatment (ART) eligibility data were recorded for 42 (31%); 95% of these were ART eligible. Initiation of cotrimoxazole preventive therapy (CPT) and ART was recorded for respectively 88% and 90% of HIV-positive patients with TB compared with respectively 40% and 38% of HIV-positive patients without TB (P < 0.001).Conclusion: Presumptive TB patients without TB had a high HIV positivity rate and, for those with available data, most were ART eligible. Unlike HIV-positive patients diagnosed with TB, CPT and ART uptake for these patients was poor. A ‘test and treat’ approach and better service linkages could be life-saving for these patients, especially in southern Africa, where there are high burdens of HIV and TB.     

Design and Implementation of a Laboratory-Based Drug Design and Synthesis Advanced Pharmacy Practice Experience

Objective. To provide students with an opportunity to participate in medicinal chemistry research within the doctor of pharmacy (PharmD) curriculum.Design. We designed and implemented a 3-course sequence in drug design or drug synthesis for pharmacy students consisting of a 1-month advanced elective followed by two 1-month research advanced pharmacy practice experiences (APPEs). To maximize student involvement, this 3-course sequence was offered to third-year and fourth-year students twice per calendar year.Assessment. Students were evaluated based on their commitment to the project’s success, productivity, and professionalism. Students also evaluated the course sequence using a 14-item course evaluation rubric. Student feedback was overwhelmingly positive. Students found the experience to be a valuable component of their pharmacy curriculum.Conclusion. We successfully designed and implemented a 3-course research sequence that allows PharmD students in the traditional 4-year program to participate in drug design and synthesis research. Students report the sequence enhanced their critical-thinking and problem-solving skills and helped them develop as independent learners. Based on the success achieved with this sequence, efforts are underway to develop research APPEs in other areas of the pharmaceutical sciences.     

Thinking critically about client-centred practice and occupational possibilities across the life-span

Abstract

Background: Client-centred occupational therapy practice is tacitly guided by prevailing social values and beliefs about what are “normal” occupational possibilities. These values and beliefs privilege some occupations and negate others. Aim: This study aims to identify and problematize assumptions regarding the value of approximating normal occupational possibilities, showing how these assumptions influence and may diminish client-centred practice. Methods: Using empirical research examples it demonstrates how occupational therapists and clients are immersed in contexts that shape values and beliefs about what are considered “normal” occupations and how these taken-for-granted values structure occupational therapy practice. Conclusion: Critique of client-centred practice requires conscious reflexivity, interrogating our own and our clients’ predispositions to value some occupations over others. Engaging in critical reflexivity can help therapists develop new perspectives of how client-centred practice can be applied that includes enabling possibilities for occupations that would be missed altogether in the pursuit of “normal’.     

Teaching minority children hygiene: investigating hygiene education in kindergartens and homes of ethnic minority children in northern Vietnam

Objectives. Ethnic minority children in Vietnam experience high levels of hygiene- and sanitation-related diseases. Improving hygiene for minority children is therefore vital for improving child health. The study objective was to investigate how kindergarten and home environments influence the learning of hygiene of pre-school ethnic minority children in rural Vietnam.

Design. Eight months of ethnographic field studies were conducted among four ethnic minority groups living in highland and lowland communities in northern Vietnam. Data included participant observation in four kindergartens and 20 homes of pre-school children, together with 67 semi-structured interviews with caregivers and five kindergarten staff. Thematic analysis was applied and concepts of social learning provided inputs to the analysis.

Findings. This study showed that poor living conditions with lack of basic sanitation infrastructures were important barriers for the implementation of safe home child hygiene. Furthermore, the everyday life of highland villages, with parents working away from the households resulted in little daily adult supervision of safe child hygiene practices. While kindergartens were identified as potentially important institutions for improving child hygiene education, essential and well-functioning hygiene infrastructures were lacking. Also, hygiene teaching relied on theoretical and non-practice-based learning styles, which did not facilitate hygiene behaviour change in small children. Minority children were further disadvantaged as teaching was only provided in non-minority language.

Conclusions. Kindergartens can be important institutions for the promotion of safe hygiene practices among children, but they must invest in the maintenance of hygiene and sanitation infrastructures and adopt a strong practice-based teaching approach in daily work and in teacher's education. To support highland minority children in particular, teaching styles must take local living conditions and caregiver structures into account and teach in local languages. Creating stronger links between home and institutional learning environments can be vital to support disadvantaged highland families in improving child health.