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排序方式: 共有755条查询结果,搜索用时 15 毫秒
31.
Hausding M Karwot R Scholtes P Lehr HA Wegmann M Renz H Galle PR Birkenbach M Neurath MF Blumberg RS Finotto S 《European journal of immunology》2007,37(6):1663-1677
Epstein-Barr virus-induced gene (EBI)-3 codes for a soluble type 1 cytokine receptor homologous to the p40 subunit of IL-12 that is expressed by antigen-presenting cells following activation. Here, we analyzed the functional role of EBI-3 in a murine model of asthma associated with airway hyper-responsiveness (AHR) in ovalbumin-sensitized mice. Upon allergen challenge, EBI-3-/- mice showed less severe AHR, decreased numbers and degranulation of eosinophils and a significantly reduced number of VCAM-1+ cells in the lungs as compared to wild-type littermates. We thus analyzed lung CD11c+ cells before and after allergen challenge in these mice and found that before allergen challenge, lung CD11c+ cells isolated from EBI-3-/- mice express markers of a more plasmacytoid phenotype without releasing IFN-alpha as compared to those from wild-type littermates. Moreover, allergen challenge induced the development of myeloid CD11c+ cells in the lungs of EBI-3-/- mice, which released increased amounts of IL-10 and IL-12 while not expressing IFN-alpha. Finally, inhibition of EBI-3 expression in lung DC could prevent AHR in adoptive transfer studies by suppressing mediator release of effector cells into the airways. These results indicate a novel role for EBI-3 in controlling local immune responses in the lungs in experimental asthma. 相似文献
32.
Wagner LM Capezuti E Brush B Boltz M Renz S Talerico KA 《Research in nursing & health》2007,30(2):131-140
Researchers have demonstrated that the use of physical restraints in nursing homes can be reduced, particularly where advanced practice nurses (APNs) are utilized. We examined the link between APN practice, siderail reduction, and the costs of siderail alternatives in 273 residents in four Philadelphia nursing homes. The majority of participants were cognitively and physically impaired with multiple co-morbidities. APNs recommended a total of 1,275 siderail-alternative interventions aimed at reducing fall risk. The median cost of siderail alternatives to prevent falls per resident was $135. Residents with a fall history experienced a significantly higher cost of recommendation compared to non-fallers. Findings suggest that an APN consultation model can effectively be implemented through comprehensive, individualized assessment without incurring substantial costs to the nursing home. 相似文献
33.
Bernhard W. Renz Kurt Leitner Erich Odermatt Daniel L. Worthley Martin K. Angele Karl-Walter Jauch Reinhold A. Lang 《Langenbeck's archives of surgery / Deutsche Gesellschaft fur Chirurgie》2014,399(3):349-357
Background
Intra-abdominal adhesions following surgery are a major source of morbidity and mortality including abdominal pain and small bowel obstruction. This study evaluated the safety of PVA gel (polyvinyl alcohol and carboxymethylated cellulose gel) on intestinal anastomoses and its potential effectiveness in preventing adhesions in a clinically relevant large animal model.Methods
Experiments were performed in a pig model with median laparotomy and intestinal anastomosis following small bowel resection. The primary endpoint was the safety of PVA on small intestinal anastomoses. We also measured the incidence of postoperative adhesions in PVA vs. control groups: group A (eight pigs): stapled anastomosis with PVA gel compared to group B (eight pigs), which had no PVA gel; group C (eight pigs): hand-sewn anastomosis with PVA gel compared to group B (eight pigs), which had no anti-adhesive barrier. Animals were sacrificed 14 days after surgery and analyzed.Results
All anastomoses had a patent lumen without any stenosis. No anastomoses leaked at an intraluminal pressure of 40 cmH2O. Thus, anastomoses healed very well in both groups, regardless of whether PVA was administered. PVA-treated animals, however, had significantly fewer adhesions in the area of stapled anastomoses. The hand-sewn PVA group also had weaker adhesions and trended towards fewer adhesions to adjacent organs.Conclusion
These results suggest that PVA gel does not jeopardize the integrity of intestinal anastomoses. However, larger trials are needed to investigate the potential of PVA gel to prevent adhesions in gastrointestinal surgery. 相似文献34.
Araceli Jarquin Campos Lorenz Risch Marc Baumann Mette-Triin Purde Sebastian Neuber Harald Renz 《Scandinavian journal of clinical and laboratory investigation》2019,79(1-2):91-98
Shrunken pore syndrome (SPS) is a condition that manifests itself as the decreased renal clearance of low-molecular-weight proteins but normal clearance of creatinine. Pregnant women with evidence of SPS during the first trimester have an increased risk of developing preeclampsia (PE). The nitric oxide (NO) metabolism markers arginine and ADMA, especially their ratio (Arg/ADMA), are recognized markers of endothelial dysfunction. The aim of this nested case–control study was to establish first-trimester reference intervals (RI) for markers of NO metabolism and to study these markers in women with evidence of SPS at the end of the first trimester. Seventy-four women were stratified in the first trimester according to evidence of SPS (SPS?+?or SPS–) and the occurrence of PE during subsequent pregnancy (PE?+?or PE–), as follows: SPS–/PE–, SPS+/PE–, SPS–/PE+, and SPS+/PE+. RIs were determined according to the CLSI EP28-A3c guidelines. Serum Arg and ADMA levels were analyzed. The Arg and ADMA concentrations did not differ among the four groups. However, women in the SPS+/PE?+?group had a significantly lower Arg/ADMA ratio than those in the other 3 groups (p?=?.02). In conclusion, we defined the first-trimester RI of Arg, ADMA and the Arg/ADMA ratio as markers of NO metabolism. Our results suggest that SPS in the first trimester predicts a pathophysiological hallmark of subsequent PE, i.e. lower NO production leading to increased vessel tone. Early identification of women at risk for later PE could lead to adaptive prophylactic interventions, such as supplementation with Arg or an NO-donor drug in order to mitigate the risk of developing PE. 相似文献
35.
Carina Venter Matthew Greenhawt Rosan W. Meyer Carlo Agostoni Imke Reese George du Toit Mary Feeney Kate Maslin Bright I. Nwaru Caroline Roduit Eva Untersmayr Berber Vlieg-Boerstra Isabella Pali-Schöll Graham C. Roberts Peter Smith Cezmi A. Akdis Ioana Agache Miriam Ben-Adallah Stephan Bischoff Remo Frei Holger Garn Kate Grimshaw Karin Hoffmann-Sommergruber Nonhlanhla Lunjani Antonella Muraro Lars K. Poulsen Harald Renz Milena Sokolowska Catherine Stanton Liam O'Mahony 《Allergy》2020,75(3):497-523
To fully understand the role of diet diversity on allergy outcomes and to set standards for conducting research in this field, the European Academy of Allergy and Clinical Immunology Task Force on Diet and Immunomodulation has systematically explored the association between diet diversity and allergy outcomes. In addition, a detailed narrative review of information on diet quality and diet patterns as they pertain to allergic outcomes is presented. Overall, we recommend that infants of any risk category for allergic disease should have a diverse diet, given no evidence of harm and some potential association of benefit in the prevention of particular allergic outcomes. In order to harmonize methods for future data collection and reporting, the task force members propose relevant definitions and important factors for consideration, when measuring diet diversity in the context of allergy. Consensus was achieved on practice points through the Delphi method. It is hoped that the definitions and considerations described herein will also enable better comparison of future studies and improve mechanistic studies and pathway analysis to understand how diet diversity modulates allergic outcomes. 相似文献
36.
目的探讨蜂胶对糖尿病伤口愈合的作用及其机制。方法采用荧光电泳法,检测不同葡萄糖浓度(5、25mmol/L)和不同蜂胶浓度(10、50、100、200μg/ml)处理的体外培养的人成纤维细胞及单核巨噬细胞系的基质金属蛋白酶MMP-9蛋白的表达。结果高浓度葡萄糖(25mmol/L)状态下,MMP-9表达增加,但与低浓度(5mmol/L)比较,差异无统计学意义。蜂胶可显著降低MMP-9的表达,并呈剂量依赖性(P〈.05)。结论高糖能增加单核巨噬细胞系及成纤维细胞MMP-9的表达,可能会影响糖尿病患者伤口的愈合。蜂胶可抑制这些细胞MMP-9的表达,有益于细胞基质的积聚,从而有益于糖尿病患者伤口的愈合。 相似文献
37.
Tessa Timmers Rik Ossenkoppele Denise Visser Hayel Tuncel Emma E Wolters Sander CJ Verfaillie Wiesje M van der Flier Ronald Boellaard Sandeep SV Golla Bart NM van Berckel 《Journal of cerebral blood flow and metabolism》2020,40(12):2464
The aim of this study was to investigate the test–retest (TRT) repeatability of various parametric quantification methods for [18F]Flortaucipir positron emission tomography (PET). We included eight subjects with dementia or mild cognitive impairment due to Alzheimer’s disease and six cognitively normal subjects. All underwent two 130-min dynamic [18F]Flortaucipir PET scans within 3 ± 1 weeks. Data were analyzed using reference region models receptor parametric mapping (RPM), simplified reference tissue method 2 (SRTM2) and reference logan (RLogan), as well as standardized uptake value ratios (SUVr, time intervals 40–60, 80–100 and 110–130 min post-injection) with cerebellar gray matter as reference region. We obtained distribution volume ratio or SUVr, first for all brain regions and then in three tau-specific regions-of-interest (ROIs). TRT repeatability (%) was defined as |retest–test|/(average (test + retest)) × 100. For all methods and across ROIs, TRT repeatability ranged from (median (IQR)) 0.84% (0.68–2.15) to 6.84% (2.99–11.50). TRT repeatability was good for all reference methods used, although semi-quantitative models (i.e. SUVr) performed marginally worse than quantitative models, for instance TRT repeatability of RPM: 1.98% (0.78–3.58) vs. SUVr80–100: 3.05% (1.28–5.52), p < 0.001. Furthermore, for SUVr80–100 and SUVr110–130, with higher average SUVr, more variation was observed. In conclusion, while TRT repeatability was good for all models used, quantitative methods performed slightly better than semi-quantitative methods. 相似文献
38.
Sophie Nicklaus Amandine Divaret‐Chauveau Marie‐Laure Chardon Caroline Roduit Vincent Kaulek Ela Ksiazek Marie‐Laure Dalphin Anne M. Karvonen Pirkka Kirjavainen Juha Pekkanen Roger Lauener Elisabeth Schmausser‐Hechfellner Harald Renz Charlotte Braun‐Fahrlnder Josef Riedler Dominique A. Vuitton Erika Von Mutius Jean‐Charles Dalphin 《Allergy》2019,74(4):788-798
39.
Daniel P. Potaczek Sebastian D. Unger Nan Zhang Styliani Taka Sven Michel Nesibe Akdağ Feng Lan Markus Helfer Christoph Hudemann Markus Eickmann Chrysanthi Skevaki Spyridon Megremis Anne Sadewasser Bilal Alashkar Alhamwe Fahd Alhamdan Mübeccel Akdis Michael R. Edwards Sebastian L. Johnston Harald Renz 《The Journal of allergy and clinical immunology》2019,143(4):1403-1415
40.
Background: Crohn's disease (CD) represents a chronic inflammatory bowel disease with abnormal CD8 T-cell function in a subgroup of patients. Methods: A 55-year-old woman presented with CD on the basis of clinical, endoscopic, radiologic, histologic, and sonographic examination. Since the disease could not be controlled with conventional anti-inflammatory therapy, a detailed analysis of cellular and humoral immune functions was performed and showed a dysbalanced T-cell activation pattern with an inverse CD4/CD8 ratio due to an increased number of CD8 T cells. Additionally, high IgM and low IgG2 antibody levels were detected. Treatment with intravenous immunoglobulin (IVIG) was started as immunomodulatory therapy. During this therapy the condition improved markedly. CD8 T-cell levels returned to normal, and IgM decreased as well. Conclusion: This case shows that selected cases of CD may be associated with abnormal functions and that such patients may benefit from IVIG treatment. 相似文献