UCSF, University of California, San Francisco

  • 文章类型: Journal Article
    未经评估:描述加利福尼亚州邻里水平因素的疫苗和加强剂吸收。
    UNASSIGNED:我们使用加州公共卫生部的数据研究了截至2021年9月21日的COVID-19疫苗接种趋势,以及截至2022年3月29日的疫苗接种趋势。使用准泊松回归对邻域水平因素与邮政编码之间的完全接种和增强之间的关联进行建模。在10个人口普查地区之间比较了关于助推器率的子分析。
    UNASSIGNED:在最小调整模型中,黑人居民比例较高与疫苗接种率较低相关(HR=0.97;95CI:0.96-0.98).然而,在一个完全调整的模型中,黑色的比例,西班牙裔/拉丁裔,亚洲居民的疫苗接种率较高(HR=1.02;95CI:1.01-1.03)。低疫苗覆盖率的最强预测因子是残疾(HR=0.89;95CI:0.86-0.91)。加强剂量的趋势相似。与助推器覆盖率相关的因素因地区而异。
    未经评估:检查与COVID-19疫苗接种和加强率相关的邻里水平因素发现,在加利福尼亚州这个地理和人口统计学上不同的州内,存在显著差异。基于公平的疫苗接种方法必须确保对健康的多种社会决定因素进行强有力的考虑。
    UNASSIGNED: To describe vaccine and booster uptake by neighborhood-level factors in California.
    UNASSIGNED: We examined trends in COVID-19 vaccination up to September 21, 2021, and boosters up to March 29, 2022 using data from the California Department of Public Health. Quasi-Poisson regression was used to model the association between neighborhood-level factors and fully vaccinated and boosted among ZIP codes. Sub-analyses on booster rates were compared among the 10 census regions.
    UNASSIGNED: In a minimally adjusted model, a higher proportion of Black residents was associated with lower vaccination (HR = 0.97; 95%CI: 0.96-0.98). However, in a fully adjusted model, proportion of Black, Hispanic/Latinx, and Asian residents were associated with higher vaccination rates (HR = 1.02; 95%CI: 1.01-1.03 for all). The strongest predictor of low vaccine coverage was disability (HR = 0.89; 95%CI: 0.86-0.91). Similar trends persisted for booster doses. Factors associated with booster coverage varied by region.
    UNASSIGNED: Examining neighborhood-level factors associated with COVID-19 vaccination and booster rates uncovered significant variation within the large and geographically and demographically diverse state of California. Equity-based approaches to vaccination must ensure a robust consideration of multiple social determinants of health.
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  • 文章类型: Journal Article
    计算机辅助方法的使用继续推动各种疾病模型加速药物发现,有趣的是,允许特异性抑制致病靶标。氯化物细胞内通道蛋白4(CLIC4)是一类与肿瘤和血管生物学密切相关的新型细胞内离子通道。它调节细胞增殖,细胞凋亡和血管生成;并参与多种病理信号通路。然而,缺乏特异性抑制剂阻碍了其向转化研究的发展。这里,我们整合了结构生物信息学和实验研究方法,以发现和验证CLIC4的小分子抑制剂.通过高性能计算驱动的盲对接方法,从1615个食品和药物管理局(FDA)批准的药物库中鉴定出高亲和力变构结合剂,导致选择两性霉素B和雷帕霉素。NMR测定证实了两种药物的结合和构象破坏作用,同时它们还逆转了应激诱导的CLIC4的膜易位并抑制了内皮细胞迁移。结构和动力学模拟研究进一步表明,这些化合物的抑制机制取决于催化谷胱甘肽(GSH)样位点环和延伸的催化β环的变构调节,这可能引起对CLIC4催化活性的干扰。来自本研究的基于结构的见解为CLIC4的选择性靶向治疗相关病理提供了基础。
    The use of computer-aided methods have continued to propel accelerated drug discovery across various disease models, interestingly allowing the specific inhibition of pathogenic targets. Chloride Intracellular Channel Protein 4 (CLIC4) is a novel class of intracellular ion channel highly implicated in tumor and vascular biology. It regulates cell proliferation, apoptosis and angiogenesis; and is involved in multiple pathologic signaling pathways. Absence of specific inhibitors however impedes its advancement to translational research. Here, we integrate structural bioinformatics and experimental research approaches for the discovery and validation of small-molecule inhibitors of CLIC4. High-affinity allosteric binders were identified from a library of 1615 Food and Drug Administration (FDA)-approved drugs via a high-performance computing-powered blind-docking approach, resulting in the selection of amphotericin B and rapamycin. NMR assays confirmed the binding and conformational disruptive effects of both drugs while they also reversed stress-induced membrane translocation of CLIC4 and inhibited endothelial cell migration. Structural and dynamics simulation studies further revealed that the inhibitory mechanisms of these compounds were hinged on the allosteric modulation of the catalytic glutathione (GSH)-like site loop and the extended catalytic β loop which may elicit interference with the catalytic activities of CLIC4. Structure-based insights from this study provide the basis for the selective targeting of CLIC4 to treat the associated pathologies.
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  • 文章类型: Journal Article
    肝硬化容易导致能量异常,荷尔蒙,和免疫稳态。这些代谢过程中的紊乱导致对肌肉减少症或病理性肌肉萎缩的易感性。肌少症在肝硬化中很普遍,它的存在预示着显著的不良后果,包括住院时间。感染并发症,和死亡率。这突出了识别具有早期营养的高危个体的重要性,治疗和物理治疗干预。这篇手稿总结了与肝硬化中的肌少症相关的文献,描述了当前的知识,并阐明未来可能的方向。
    Cirrhosis predisposes to abnormalities in energy, hormonal, and immunological homeostasis. Disturbances in these metabolic processes create susceptibility to sarcopenia or pathological muscle wasting. Sarcopenia is prevalent in cirrhosis and its presence portends significant adverse outcomes including the length of hospital stay, infectious complications, and mortality. This highlights the importance of identification of at-risk individuals with early nutritional, therapeutic and physical therapy intervention. This manuscript summarizes literature relevant to sarcopenia in cirrhosis, describes current knowledge, and elucidates possible future directions.
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  • 文章类型: Journal Article
    UNASSIGNED: To evaluate the safety of antimotility agents (AAs) in a population of patients with hematologic malignancies and concurrent Clostridioides difficile infection (CDI) and to describe the outcomes of AA use in a hospital setting.
    UNASSIGNED: We used the electronic health record to identify patients who were hospitalized in the adult malignant hematology service who had 1 or more toxin-positive C difficile stool assay between April 1, 2012, and September 21, 2017. We reviewed medical charts to obtain information on the use of AAs and any subsequent gastrointestinal complications.
    UNASSIGNED: There were 339 patients who were stool toxin positive for CDI during the study period. Of those, 94 patients (27%) were prescribed AAs within 14 days of CDI diagnosis. All patients received CDI antimicrobial therapy within the first 24 hours. There were 2 adverse gastrointestinal events in the group that received AAs and 6 in the group that did not receive AAs. The risk of adverse events did not differ between patients who received AAs and those who did not (adjusted odds ratio, 0.36; 95% CI, 0.06 to 2.10). The mean age of the full cohort was 52.7±15.5 years, and the mean length of stay was 26.7±22.6 days. Early AA use (<48 hours of diagnosis) was not associated with increased adverse effects.
    UNASSIGNED: There was no increase in the incidence of gastrointestinal events in the arm that used AAs compared with the control arm. The evidence suggests that for patients with hematologic malignancies and CDI, the addition of AAs to appropriate antimicrobial therapy poses no additional risk.
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  • 文章类型: Case Reports
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  • 文章类型: Journal Article
    Hepatocellular Carcinoma (HCC) continues to present major challenges in management, which is further complicated by the presence of associated chronic liver disease. Key issues in surgical resection of HCC include the site, size, and number of lesions, the severity of the chronic liver disease, and the size of the functional liver remnant. De novo HCC in the absence of chronic liver disease can be treated by major liver resection with little risk of postoperative liver failure. Liver resection can also be used a bridge to liver transplantation as it affords the possibility of determining the pathologic grade of the tumortumor and its invasiveness, and thereby the prognosis. This review summarizes the current treatment approaches to surgical resection for HCC.
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