Glomerular matrix proteins in nodular glomerulosclerosis in association with light chain deposition disease and diabetes mellitus

The diagnosis of light chain deposition nephropathy is based on the immunohistochemical demonstration of monoclonal light chain deposits within connective tissue matrix and on the presence at the ultrastructural level of electron-dense granular deposits along glomerular and tubular basement membranes. A nodular glomerulopathy characterized by amorphous periodic acid-Schiff-positive and argyrophilic widened mesangium and nodules is described in three patients with light chain deposition nephropathy. Light microscopic examination did not allow discrimination between the glomerular changes found in these specimens and the nodular glomerulosclerosis described in four patients with well-documented diabetes mellitus. Electron microscopic examination revealed microtubular fibrils 10 to 12 nm thick in mesangial areas in both groups. Such microfibrils could be glycoproteins. Immunofluorescence localization of matrix proteins, by staining with affinity-purified antibodies to types I, III, IV, and V (A, B) collagens, fibronectin, laminin, and heparan sulfate-containing proteoglycans, showed similar distributions in the two conditions. The mechanism of this abnormal accumulation of mesangial and glomerular basement membrane matrix proteins in two different conditions remains unknown.     

Skin test suppression by antihistamines and the development of subsensitivity

The suppression of skin test reactivity by single doses of six antihistamines was measured before and after a period of daily antihistamine ingestion in 18 subjects. Single doses of hydroxyzine, 50 mg; chlorpheniramine, 16 mg; and promethazine, 50 mg; induced significant suppression of skin test reactivity at 2 hr, whereas the suppression produced by tripelennamine, 100 mg; diphenhydramine, 50 mg; and cyproheptadine, 16 mg; did not differ significantly from that produced by placebo. After 3 wk of treatment with hydroxyzine, 75 mg per day, the suppressive effect of hydroxyzine as well as the five clinically unrelated antihistamines was significantly reduced. Although the response to chlorpheniramine was also reduced after chronic treatment with chlorpheniramine, 24 mg per day, the difference was not statistically significant. We conclude that antihistamines in the doses used differ greatly in their suppressive effect on skin test reactivity. The antihistamine producing the most skin test suppression, hydroxyzine, when it was taken daily for 3 wk, caused the development of partial tolerance not only to its own effect but to those of clinically unrelated antihistamines.     

Ecotropic and dualtropic mink cell focus-inducing murine leukemia viruses can induce a wide spectrum of H-2 controlled lymphoma types

Neonatal infection of C57BL and BALB/c mice by cloned ecotropic and dualtropic mink cell focus-inducing (MCF) murine leukemia viruses (MuLV) induces a wide spectrum of different lymphomas of T, B, and non-T/non-B cell types. Oncogenic dualtropic MCF viruses and poorly oncogenic ecotropic MuLV act synergistically in lymphomagenesis. Within one mouse strain virus-induced T-cell lymphomas arise earlier than B-cell lymphomas after neonatal inoculation of a single-cloned MuLV. The host genetic constitution, notably the H-2 complex has a marked influence on lymphoma type. This H-2 influence can be explained by an H-2-linked difference in penetration of the thymus early in life by oncogenic thymotropic MuLV, which in turn is correlated with, but not necessarily due to the magnitude of the anti-MuLV antibody response.     

Karyotyping chromosomes by electron microscopy. Condensation-inhibition of G bands in human and Chinese hamster chromosomes by a BrdU-Hoechst 33258 treatment

A BrdU-Hoechst 33258 treatment of living cells, which selectively induced condensation-inhibition of G-band chromatin in human and Chinese hamster chromosomes, is presented. As a consequence mitotic chromosomes showed high resolution R-banding patterns when examined by light and electron microscopy. Besides each whole chromosome identification, this procedure also permitted the electron microscopic study of specific structures, such as satellites, secondary constrictions, telomeres, centromeres, as well as G and R bands, some of them not visible by light microscopy. We have also observed that the chromatin of G and R bands behave as blocks of chromatin condensation and that G-band chromatin develops condensation along G₂. Under the BrdU-Hoechst 33258 treatment, chromatin fibers seem to invert their spontaneous pattern of condensation within the chromosomes.     

Ejaculatory incompetence: a theoretical formulation and case illustration

Three theoretical formulations of ejaculatory incompetence have been proposed in the literature. They include: (1) aversive conditioned inhibition of the ejaculatory reflex, (2) an "autosexual" orientation associated with discrepant levels in the cognitive and physiological dimensions of sexual arousal, and (3) a discriminative learning model. These three models are discussed in relation to their theoretical and therapeutic implications. Clinical data supporting the discriminative view is presented.     

老年患者日间手术全程质量管理模式研究

目的探索老年患者日间手术全程质量管理模式。方法通过医院病历系统采集2015年-2020年应用老年患者日间手术全程质量管理模式前后患者信息,进行对比分析。结果老年患者应用日间手术全程质量管理模式后,≥65岁老年患者日间手术人数逐年上升,占比从13.52%上升至18.62%,差异有统计学意义（χ2=6.450,P=0.011）;日间手术住院时间＞5 d的比例从0.72%下降至0.50%,差异有统计学意义（χ2=338.088,P<0.001）;不良事件发生率从3.77‰下降至1.56‰,差异有统计学意义（χ2=5.156,P=0.023）,其中严重不良事件发生率从2.08‰下降至0.35‰,差异有统计学意义（χ2=7.019,P=0.008）。结论应用日间手术全程质量管理模式能够有效提高老年患者日间手术的安全性,值得借鉴与推广。     

我国移动医疗APP服务质量与用户满意度关系研究

目的探讨移动医疗APP服务质量各维度与用户满意度的关系,提出针对性建议,为提高移动医疗APP服务质量提供参考。方法根据更新的信息系统成功理论（UDMISS）,结合移动医疗服务质量模型,建立了移动医疗服务质量与用户满意度关系模型。通过问卷调查,使用PLS-SEM法对模型及假设进行验证。结果移动医疗APP系统质量中的可靠性、效率性、隐私性以及信息质量中的功利效益对用户使用满意度有积极影响,而交互质量对用户使用满意度影响不显著。结论重视应用便利性和患者隐私保护,提高移动医疗APP系统质量;提供个性化服务和心理咨询服务,提高移动医疗APP交互针对性;在确保移动医疗APP信息质量的同时提供适度信息数量,以改善患者使用体验。     

护士主导的高血压管理范围综述

目的对国内外护士主导的高血压管理相关研究进行范围审查,为完善护士主导的高血压防治措施提供循证建议。方法系统检索中国生物医学文献数据库、中国知网、万方、维普、Web of Science、PubMed、CINAHL、Cochrane和Embase等数据库2010年1月1日至2020年9月20日相关研究,提取相关信息。结果共纳入22篇文献。主导护士类别包括社区护士、医院护士、专科护士,管理团队以护士主导的多学科团队为主,管理形式以面对面会议、电话随访、电子邮件等形式为主,管理内容涉及评估、设定健康目标、个性化指导、与多学科团队沟通、转介、评价与反馈等,评价指标以患者血压变化/血压控制达标率、治疗/服药依从性为主,仅1项以社区护士为主导的研究显示与常规护理相比血压未明显下降。结论护士主导的高血压管理措施对单纯性原发性高血压具有较好效果。建议基于区域医联体,建立医院—社区—家庭高血压管理模式;完善我国社区护士认证与培养体系;借鉴其他发展中国家护士处方权经验,结合我国国情,制定相关法律法规,适当给予护士一定范围内处方权;发展“互联网+”慢病管理模式。     

家庭医生签约服务模式下全科团队年度考核指标体系构建

目的建立一套家庭医生签约服务模式下的全科团队年度考核指标体系。方法通过文献回顾法和半结构访谈法初步拟定指标初稿;邀请15名专家开展专家函询,评价全科团队年度考核指标体系重要性和可行性,并采用界值法对指标进行筛选,采用层次分析法确定各级指标权重。结果两轮函询专家积极系数均为100%,权威系数分别为0.83和0.75。最终确定家庭医生签约服务模式下全科团队年度考核指标体系包括服务数量、服务质量和服务效果3个维度共19项指标。结论 构建的家庭医生签约服务模式下的全科团队年度考核指标体系具有一定科学性和实用性,下一步有待结合实证结果对指标体系进行优化。     

推行PDCA循环的做法与体会

医院推行PDCA循环并非一成不变,每年的推进都是一个新的循环。介绍了推行PDCA循环的做法与体会,包括成立推进组织,加强组织领导;培育核心团队,坚持长期主义;重视关键节点,加强过程管理;秉承PDCA循环理念,不断持续改进等。针对推进中的问题和难点,认为必须化解推进中的阻力,必须秉承PDCA循环的理念持续改进,必须坚持长期主义等。