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| 1 | Intracellular signaling mechanisms regulating the activation of human eosinophils by the novel Th2 cytokine IL-33:implications for allergic inflammation显示文摘The novel interleukin(IL)-1 family cytokine IL-33 has been shown to activate T helper 2(Th2)lymphocytes,mast cells and basophils to produce an array of proinflammatory cytokines,as well as to mediate blood eosinophilia,IgE secretion and hypertrophy of airway epithelium in mice.In the present study,we characterized the activation of human eosinophils by IL-33,and investigated the underlying intracellular signaling mechanisms.IL-33 markedly enhanced eosinophil survival and upregulated cell surface expression of the adhesion molecule intercellular adhesion molecule(ICAM)-1 on eosinophils,but it suppressed that of ICAM-3 and L-selectin.In addition,IL-33 mediates significant release of the proinflammatory cytokine IL-6 and the chemokines CXCL8 and CCL2.We found that IL33-mediated enhancement of survival,induction of adhesion molecules,and release of cytokines and chemokines were differentially regulated by activation of the nuclear factor(NF)-KB,p38 mitogen-activated protein kinase(MAPK)and extracellular signal-regulated kinase(ERK)pathways.Furthermore,we compared the above IL-33 activities with two structurally and functionally related cytokines,IL-1 B and IL-18.IL-1β,but not IL-18,markedly upregulated cell surface expression of ICAM-1.IL-1βand IL-18 also significantly enhanced eosinophil survival,and induced the release of IL-6 and chemokines CXCL8 and CCL2 via the activation of the NF-κB,p38 MAPK and ERK pathways.Synergistic efects on the release of IL-6 were also observed in combined treatment withIL-1B,IL-18 and IL-33.Taken together,our findings provide insight into IL-33-mediated activation of eosinophils via differential intracellular signaling cascades in the immunopathogenesis of allergic inflammation. | Joyce YS Chow Chun K Wong Phyllis FY Cheung Christopher WK Lam | 2010 | Cellular & Molecular Immunology2010,7,1: | 22 |
| 2 | Management of postoperative spinal infections显示文摘Postoperative surgical site infection(SSI) is a common complication after posterior lumbar spine surgery. This review details an approach to the prevention,diagnosis and treatment of SSIs. Factors contributing to the development of a SSI can be split into three categories:(1) microbiological factors;(2) factors related to the patient and their spinal pathology; and(3) factors relating to the surgical procedure. SSI is most commonly caused by Staphylococcus aureus. The virulence of the organism causing the SSI can affect its presentation. SSI can be prevented by careful adherence to aseptic technique,prophylactic antibiotics,avoiding myonecrosis by frequently releasing retractors and preoperatively optimizing modifiable patient factors. Increasing pain is commonly the only symptom of a SSI and can lead to a delay in diagnosis. C-reactive protein and magnetic resonance imaging can help establish the diagnosis. Treatment requires acquiring intra-operative cultures to guide future antibiotic therapy and surgical debridement of all necrotic tissue. A SSI can usually be adequately treated without removing spinalinstrumentation. A multidisciplinary approach to SSIs is important. It is useful to involve an infectious disease specialist and use minimum serial bactericidal titers to enhance the effectiveness of antibiotic therapy. A plastic surgeon should also be involved in those cases of severe infection that require repeat debridement and delayed closure. | Vishal Hegde Dennis S Meredith Christopher K Kepler Russel C Huang | 2012 | World Journal of Orthopedics2012,3,11: | 17 |
| 3 | Radiofrequency ablation of liver tumors: Actual limitations and potential solutions in the future显示文摘Over the past decade,radiofrequency ablation(RFA) has evolved into an important therapeutical tool for the treatment of non resectable primary and secondary liver tumors.The clinical benefit of RFA is represented in several clinical studies.They underline the safety and feasibility of this new and modern concept in treating liver tumors.RFA has proven its clinical impact not only in hepatocellular carcinoma(HCC) but also in metastatic disease such as colorectal cancer(CRC).Due to the increasing number of HCC and CRC,RFA might play an even more important role in the future.Therefore,the refinement of RFA technology is as important as the evaluation of data of prospective randomized trials that will help define guidelines for good clinical practice in RFA application in the future.The combination of hepatic resection and RFA extends the feasibility of open surgical procedures in patients with extensive tumors.Adverse effects of RFA such as biliary tract damage,liver failure and local recurrence remain an important task today but overall the long term results of RFA application in treating liver tumors are promising.Incomplete ablation of liver tumors due to insufficient technology of ablation needles,tissue cooling by the neighbouring blood vessels,large tumor masses and ablation of tumors in close vicinity to heat sensitive organs remain difficult tasks for RFA.Future solutions to overcome these limitations of RFA will include refinement of ultrasonographic guidance(accuracy of probe placement),improvements in needle technology(e.g.needles preventing charring)and intraductal cooling techniques. | Beat M Künzli Paolo Abitabile Christoph A Maurer | 2011 | World Journal of Hepatology2011,3,1: | 15 |
| 4 | Pediatric inflammatory bowel disease显示文摘煽动性的肠疾病是在孩子和青少年的胃肠的病理的一个重要原因。小儿科的煽动性的肠疾病的发生正在增加;因此,临床医生知道在小儿科的人口的这疾病的演讲是重要的。实验室测试,辐射学研究,和内视镜的过程在诊断煽动性的肠疾病并且在 Crohn 的疾病和 ulcerative 之间区分是有用的。一旦诊断,当最小化药的副作用时,医药管理的目标是导致疾病的宽恕。特定的注意需要对在这张易受影响的人口完成正常生长被给予。外科的管理通常为医药管理,复杂并发症,或恶意的失败被显示。为小儿科的煽动性的肠疾病的诊断评估和处理的算法被介绍。面对这些病人的特定的精神分析聚会问题也在是处于小儿科的煽动性的肠疾病的复杂问题的研究的未来目标的这评论被讨论。 | Karen A Diefenbach Christopher K Breuer | 2006 | World Journal of Gastroenterology2006,12,20: | 13 |
| 5 | Alcoholic pancreatitis:New insights into the pathogenesisand treatment显示文摘Acute pancreatitis is a necro-inflammatory disease of the exocrine pancreas that is characterized by inappropriate activation of zymogens, infiltration of the pancreas by inflammatory cells, and destruction of the pancreatic exocrine cells. Acute pancreatitis can progress to a severe life-threatening disease. Currently there is no pharmacotherapy to prevent or treat acute pancreatitis. One of the more common factors associated with acute pancreatitis is alcohol abuse. Although commonly associated with pancreatitis alcohol alone is unable to cause pancreatitis. Instead, it appears that alcohol and its metabolic by-products predispose the pancreas to damage from agents that normally do not cause pancreatitis, or to more severe disease from agents that normally cause mild pancreatic damage. Over the last 10 to 20 years, a tremendous amount of work has defined a number of alcohol-mediated biochemical changes in pancreatic cells. Among these changes are: Sustained levels of intracellular calcium, activation of the mitochondrial permeability transition pore, endoplasmic reticulum stress, impairment in autophagy, alteration in the activity of transcriptional activators, and colocalization of lysosomal and pancreatic digestive enzymes. Elucidation of these changes has led to a deeper understanding of the mechanisms by which ethanol predisposes acinar cells to damage. This greater understanding has revealed a number of promising targets for therapeutic intervention. It is hoped that further investigation of these targets will lead to the development of pharmacotherapy that is effective in treating and preventing the progression of acute pancreatitis. | Dahn L Clemens Katrina J Schneider Christopher K Arkfeld Jaclyn R Grode Mark A Wells Shailender Singh | 2016 | World Journal of Gastrointestinal Pathophysiology2016,7,1: | 10 |
| 6 | 埋入光纤Mach-Zehnder干涉仪检测复合材料梁的分层显示文摘 将光纤Mach-Zehnder干涉仪的传感臂埋入到复合材料梁的中性层来检测梁的分层。不论梁是连续支撑还是简单支撑,均取得了很好的实验结果。通过用榔头连续下压梁,由光纤干涉仪可以得到一条输出曲线,从这条曲线就可以准确判断梁内部是否存在分层,以及分层的位置。 | 江毅 许颖 Christopher K Y Leung | 2004 | 复合材料学报2004,21,1: | 9 |
| 7 | Potential Use of Strain Hardening ECC in Permanent Formwork with Small Scale Flexural Beams显示文摘Utilizing pre-cast ECC panels as participating permanent formwork of concrete members, and the validity of using ECC to disperse the single crack in concrete into multiple ones in ECC were studied. In the process, totally two kinds of ECC with different tensile properties, 7 series of flat panels with different top surface figures and 3 U-shape panels with different inner surface forms were investigated. To evaluate the performance of the permanent formworks, small ECC-concrete composite beams were cast and tested mechanically. The 4-point bending test results show that the use of pre-cast ECC panels as permanent formwork can significantly improve the load capacity and toughness of a concrete member, effectively dispersing single widely opened crack in concrete into multiple ones in ECC. Most permanent formworks show perfect bond with the concrete cast on them, while the ones with partially debonded zone achieve the best mechanical performance. The U-shape permanent formworks show better performances than the flat ones, achieving much betler improvements in both the load capacity and toughness, together with better crack width control. | 李贺东 Christopher K Y Leung | 2009 | Journal of Wuhan University of Technology(Materials Science)2009,24,3: | 8 |
| 8 | Highly efficient derivation of ventricular cardiomyocytes from induced pluripotent stem cells with a distinct epigenetic signature显示文摘从 pluripotent 干细胞导出的 Cardiomyocytes 能在药测试,疾病建模和基于房间的治疗被使用。没有 procardiogenic 生长因素,然而,从 pluripotent 干细胞的 cardiomyogenesis 的效率通常是低的,产生 cardiomyocyte 人口是异构的。这里,我们证明导致的 pluripotent 干细胞( iPSCs )能从鼠科的室的 myocytes ( VM )被导出,并且与从各种各样的体的房间类型导出的 iPSCs 的另外的报告一致,自发地作为与遗传上匹配的胚胎的干细胞(转换字符)或 iPSCs 相比区分 cardiomyocytes 进跳动的显著地更高的倾向从尾巴尖端成纤维细胞导出的 导出VM 的 iPSCs ( ViPSCs )展览。惊人地,导出 ViPSC 的 cardiomyocytes 显示的多数室的显型。在 ViPSCs 的提高的室的 myogenesis 在区别的早阶段经由心血管的祖先的增加的数字被调停。以便从 ViPSCs 调查提高的室的 myogenesis 的机制,我们执行了全球基因表示和 DNA methylation 分析,它揭示了可以涉及在 pluripotent 干细胞指定 VM 命运的不同 epigenetic 签名。 | Huansheng Xu B Alexander Yi Hao Wu Christoph Bock Hongcang Gu Kathy O Lui Joo-Hye C Park Ying Shao Alyssa K Riley Ibrahim J Domian Erding Hu Robert Willette John Lepore Alexander Meissner Zhong Wang Kenneth R Chien | 2012 | Cell Research2012,22,1: | 7 |
| 9 | Selecting suitable solid organ transplant donors: Reducing the risk of donor-transmitted infections显示文摘Selection of the appropriate donor is essential to a successful allograft recipient outcome for solid organ transplantation. Multiple infectious diseases have been transmitted from the donor to the recipient via transplantation. Donor-transmitted infections cause increased morbidity and mortality to the recipient. In recent years, a series of high-profile transmissions of infections have occurred in organ recipients prompt-ing increased attention on the process of improving the selection of an appropriate donor that balances the shortage of needed allografts with an approach that mitigates the risk of donor-transmitted infection to the recipient. Important advances focused on improving donor screening diagnostics, using previously excluded high-risk donors, and individualizing the selection of allografts to recipients based on their prior infection history are serving to increase the donor pool and improve outcomes after transplant. This article serves to review the relevant literature surrounding this topic and to provide a suggested approach to the selection of an appropriate solid organ transplant donor. | Christopher S Kovacs Jr Christine E Koval David van Duin Amanda Guedes de Morais Blanca E Gonzalez Robin K Avery Steven D Mawhorter Kyle D Brizendine Eric D Cober Cyndee Miranda Rabin K Shrestha Lucileia Teixeira Sherif B Mossad | 2014 | World Journal of Transplantation2014,4,2: | 7 |
| 10 | Liver resections can be performed safely without Pringle maneuver: A prospective study显示文摘AIM To evaluate liver resections without Pringle maneuver, i.e., clamping of the portal triad. METHODS Between 9/2002 and 7/2013, 175 consecutive liver resections(n = 101 major anatomical and n = 74 large atypical > 5 cm) without Pringle maneuver were performed in 127 patients(143 surgeries). Accompanying, 37 wedge resections(specimens < 5 cm) and 43 radiofrequency ablations were performed. Preoperative volumetric calculation of the liver remnant preceeded all anatomical resections. The liver parenchyma was dissected by waterjet. The median central venous pressure was 4 mmH g(range: 5-14). Data was collected prospectively. RESULTS The median age of patients was 60 years(range: 16-85). Preoperative chemotherapy was used in 70 cases(49.0%). Liver cirrhosis was present in 6.3%, and liver steatosis of ≥ 10% in 28.0%. Blood loss was median 400 mL(range 50-5000 mL). Perioperative blood transfusions were given in 22/143 procedures(15%). The median weight of anatomically resected liver specimens was 525 g(range: 51-1850 g). One patient died postoperatively. Biliary leakages(n = 5) were treated conservatively. Temporary liver failure occurred in two patients.CONCLUSION Major liver resections without Pringle maneuver are feasible and safe. The avoidance of liver inflow clamping might reduce liver damage and failure, and shorten the hospital stay. | Christoph A Maurer Mikolaj Walensi Samuel A Kaser Beat M Künzli Rene Lotscher Anne Zuse | 2016 | World Journal of Hepatology2016,8,24: | 6 |
| 11 | National, regional, and global trends in fasting plasma glucose and diabetes prevalence since 1980: systematic analysis of health examination surveys and epidemiological studies with 370 country-years and 2·7 million participants显示文摘 | Goodarz Danaei Mariel M Finucane Yuan Lu Gitanjali M Singh Melanie J Cowan Christopher J Paciorek John K Lin Farshad Farzadfar Young-Ho Khang Gretchen A Stevens Mayuree Rao Mohammed K Ali Leanne M Riley Carolyn A Robinson Majid Ezzati | 2011 | The Lancet2011,,9785: | 6 |
| 12 | Clinical outcomes following salvage Gamma Knife radiosurgery for recurrent glioblastoma显示文摘Glioblastoma multiforme(GBM) is the most common malignant primary brain tumor with a survival prognosis of 14-16 mo for the highest functioning patients. Despite aggressive, multimodal upfront therapies, the majority of GBMs will recur in approximately six months. Salvage therapy options for recurrent GBM(r GBM) are an area of intense research. This study compares recent survival and quality of life outcomes following Gamma Knife radiosurgery(GKRS) salvage therapy. Following a Pub Med search for studies usingGKRS as salvage therapy for malignant gliomas, nine articles from 2005 to July 2013 were identified which evaluated rG BM treatment. In this review, we compare overall survival following diagnosis, overall survival following salvage treatment, progression-free survival, time to recurrence, local tumor control, and adverse radiation effects. This report discusses results for rG BM patient populations alone, not for mixed populations with other tumor histology grades. All nine studies reported median overall survival rates(from diagnosis, range:16.7-33.2 mo; from salvage, range:9-17.9 mo). Three studies identified median progression-free survival(range:4.6-14.9 mo). Two showed median time to recurrence of GBM. Two discussed local tumor control. Six studies reported adverse radiation effects(range:0%-46% of patients). The greatest survival advantages were seen in patients who received GKRS salvage along with other treatments, like resection or bevacizumab, suggesting that appropriately tailored multimodal therapy should be considered with each rG BM patient. However, there needs to be a randomized clinical trial to test GKRS for rG BM before the possibility of selection bias can be dismissed. | Erik W Larson Halloran E Peterson Wayne T Lamoreaux Alexander R MacKay Robert K Fairbanks Jason A Call Jonathan D Carlson Benjamin C Ling John J Demakas Barton S Cooke Christopher M Lee | 2014 | World Journal of Clinical Oncology2014,5,2: | 5 |
| 13 | Activation of human fibroblast-like synoviocytes by uric acid crystals in rheumatoid arthritis显示文摘Hyperuricemia-mediated uric acid crystal formation may cause joint inflammation and provoke the destruction of joints through the activation of inflammasome-mediated innate immune responses.However,the immunopathological effects and underlying intracellular regulatory mechanisms of uric acid crystal-mediated activation of fibroblast-like synoviocytes(FLS)in rheumatoid arthritis(RA)have not been elucidated.Therefore,we investigated the in vitro effects of monosodium urate crystals,alone or in combination with the inflammatory cytokines tumor-necrosis factor(TNF)-a or interleukin(IL)-1b,on the activation of human FLS from RA patients and normal control subjects and the underlying intracellular signaling mechanisms of treatment with these crystals.Monosodium urate crystals were able to significantly increase the release of the inflammatory cytokine IL-6,the chemokine CXCL8 and the matrix metalloproteinase(MMP)-1 from both normal and RA-FLS(all P,0.05).Moreover,the additive or synergistic effect on the release of IL-6,CXCL8 and MMP-1 from both normal and RA-FLS was observed following the combined treatment with monosodium urate crystals and TNF-a or IL-1b.Further experiments showed that the release of the measured inflammatory cytokine,chemokine and MMP-1 stimulated by monosodium urate crystals were differentially regulated by the intracellular activation of extracellular signal-regulated kinase and c-Jun N-terminal kinase pathways but not the p38 mitogen-activated protein kinase pathway.Our results therefore provide a new insight into the uric acid crystal-activated immunopathological mechanisms mediated by distinct intracellular signal transduction pathways leading to joint inflammation in RA. | Da P Chen Chun K Wong Lai S Tam Edmund K Li Christopher WK Lam | 2011 | Cellular & Molecular Immunology2011,8,6: | 5 |
| 14 | How to perform gastrointestinal ultrasound: anatomy and normal findings显示文摘Gastrointestinal ultrasound is a practical, safe, cheap and reproducible diagnostic tool in inflammatorybowel disease gaining global prominence amongst clinicians. Understanding the embryological processes of the intestinal tract assists in the interpretation of abnormal sonographic findings. In general terms, the examination principally comprises interrogation of the colon, mesentery and small intestine using both lowfrequency and high-frequency probes. Interpretation of findings on GIUS includes assessment of bowel wall thickness, symmetry of this thickness, evidence of transmural changes, assessment of vascularity using Doppler imaging and assessment of other specific features including lymph nodes, mesentery and luminal motility. In addition to B-mode imaging, transperineal ultrasonography, elastography and contrast-enhanced ultrasonography are useful adjuncts. This supplement expands upon these features in more depth. | Nathan S S Atkinson Robert V Bryant Yi Dong Christian Maaser Torsten Kucharzik Giovanni Maconi Anil K Asthana Michael Blaivas Adrian Goudie Odd Helge Gilja Dieter Nuernberg Dagmar Schreiber-Dietrich Christoph F Dietrich | 2017 | World Journal of Gastroenterology2017,23,38: | 5 |
| 15 | Effect of preoperative FOLFOX chemotherapy on CCL20/CCR6 expression in colorectal liver metastases显示文摘AIM:To evaluate the influence of preoperative FOLFOX chemotherapy on CCL20/CCR6 expression in liver metastases of stage Ⅳ colorectal cancer(CRC) patients.METHODS:Using Real Time-PCR,enzyme-linked immunosorbent assay,Western Blots and immunohistochemistry,we have analyzed the expression of CCL20,CCR6 and proliferation marker Ki-67 in colorectal liver metastasis(CRLM) specimens from stage Ⅳ CRC patients who received preoperative FOLFOX chemotherapy(n = 53) and in patients who did not receive FOLFOX chemotherapy prior to liver surgery(n = 29).RESULTS:Of the 53 patients who received FOLFOX,time to liver surgery was ≤ 1 mo in 14 patients,≤ 1 year in 22 patients and > 1 year in 17 patients,respectively.In addition,we investigated the proliferation rate of CRC cells in liver metastases in the different patient groups.Both CCL20 and CCR6 mRNA and protein expression levels were significantly increased in patients who received preoperative FOLFOX chemotherapy ≤ 12 mo before liver surgery(P < 0.001) in comparison to patients who did not undergo FOLFOX treatment.Further,proliferation of CRLM cells as measured by Ki-67 was increased in patients who underwent FOLFOX treatment.CCL20 and CCR6 expression levels were significantly increased in CRLM patients who had undergone preoperative FOLFOX chemotherapy.CONCLUSION:This chemokine/receptor up-regulation could lead to increased proliferation/migration through an autocrine mechanism which might be used by surviving metastatic cells to escape cell death caused by FOLFOX. | Claudia Rubie Vilma Oliveira Frick Pirus Ghadjar Mathias Wagner Christoph Justinger Stefan Graeber Jens Sperling Otto Kollmar Martin K Schilling | 2011 | World Journal of Gastroenterology2011,17,26: | 5 |
| 16 | Diagnostic tools in male infertility--the question of sperm dysfunction显示文摘精子机能障碍是不孕的最最普通的原因,还是显著的的,是那,没有一个人能服或把 vitro 加在一起到他的精子改进富饶的药。为在这个区域的进步的缺乏的一个原因是我们成熟 spermatazoon 的细胞、分子的活动方式的理解是有限的。然而,在最后几年,在我们的知识库并且在探讨新方法诊断精子机能障碍有可观的进步。我们考察这块地的当前的状态并且为进一步的开发提供卓见。我们结束那:在那里的(i) 是从用一个基本精液评价识别 / 分类人的各种各样的人口的更多的研究要增加的很少,在一个努力在保证分析以一个适当高质量的方法被执行被要求的地方;(ii ) 工艺的开发是可能的带精子功能更近测试到实现进临床的小径的现实。在做这,这些试金一定是柔韧的,便宜(或更适当地称为合算) ,易用、临床上有用;并且(iii ) 临床的必要性,例如,为注射识别高质量的精子的需要向前正在驾驶基本研究。这是一令人激动的时间是 andrologist 并且,多半多产的。 | Christopher LR Barratt Steven Mansell Catherine Beaton Steve Tardif Senga K Oxenham | 2011 | Asian Journal of Andrology2011,13,1: | 5 |
| 17 | Acute kidney injury and hepatorenal syndrome in cirrhosis显示文摘Acute kidney injury(AKI)in cirrhosis,including hepatorenal syndrome(HRS),is a common and serious complication in cirrhotic patients,leading to significant morbidity and mortality.AKI is separated into two categories,non-HRS AKI and HRS-AKI.The most recent definition and diagnostic criteria of AKI in cirrhosis and HRS have helped diagnose and prognosticate the disease.The pathophysiology behind non-HRS-AKI and HRS is more complicated than once theorized and involves more processes than just splanchnic vasodilation.The common biomarkers clinicians use to assess kidney injury have significant limitations in cirrhosis patients;novel biomarkers being studied have shown promise but require further studies in clinical settings and animal models.The overall management of non-HRS AKI and HRS-AKI requires a systematic approach.Although pharmacological treatments have shown mortality benefit,the ideal HRS treatment option is liver transplantation with or without simultaneous kidney transplantation.Further research is required to optimize pharmacologic and nonpharmacologic approaches to treatment.This article reviews the current guidelines and recommendations of AKI in cirrhosis. | Kapil Gupta Abhishek Bhurwal Cindy Law Scott Ventre Carlos D Minacapelli Savan Kabaria You Li Christopher Tait Carolyn Catalano Vinod K Rustgi | 2021 | World Journal of Gastroenterology2021,27,26: | 5 |
| 18 | 澳大利亚人乳头状瘤病毒疫苗计划实施5年对年轻人群生殖器疣患病情况的影响:国家调查数据分析显示文摘目的评估2007年中开始的澳大利亚人乳头状瘤病毒(HPV)疫苗计划对生殖器疣患病情况的影响。设计国家调查数据趋势分析。数据来源数据收集于2004--2011年度澳大利亚8所性健康服务机构;其中2所最大的临床中心收集了自我报告的本中心2009年度HPV疫苗现状。研究对象2004--2011年度首次就诊的85770名澳大利亚出生的国民;其中7686(9.0%)名患生殖器疣。主要结局测量比较前疫苗时期(2004—2007年中)和疫苗时期(2007年中-2001年末)不同人群生殖器疣新发病率变化趋势。结果疫苗时期21岁以下和21~30岁女性诊断患有生殖器疣的比例明显下降,发病率分别从2007年度的11.5%和11.3%下降至2011年度的0.85%和3.1%,P均〈0.001。在30岁以上的女性中未发现发病率的明显下降。在21岁以下和21~30岁异性恋男性人群中疫苗时期生殖器疣的发病率较前疫苗时期明显下降,分别由2007年度12.1%和18.2%下降至2011年度2.2%和8.9%,P均〈0.001。30岁以上的异性恋男性人群中发病率无明显下降。2011年235名21岁以下女性在使用HPV疫苗后无新发生殖器疣病例。结论年轻女性生殖器疣发病率的显著下降和2011年度部分年轻女性使用疫苗后的零发病率,说明HPV疫苗获得实验室外的良好功效。异性恋男性生殖器疣发病率的显著下降可能是由于群体免疫所致。 | Hammad Ali,lecturer Basil Donovan, professor HandanWand,senior lecturer Tim R H Read, sexual health physician David G Regan,senior lecturer Andrew E Grulich, professor Christopher K FaMey, professor Rebecca J Guy, associate professor 尹婕(译) 潘凌亚(校) | 2013 | 英国医学杂志中文版2013,16,4: | 4 |
| 19 | The effects of 12 weeks of functional strength training on muscle strength,volume and activity upon exposure to elevated Gz forces in high-performance aircraft personnel显示文摘Background:Technological advancements in modern military and acrobatic jet planes have resulted in extraordinary psychophysiological loads being exerted upon flying personnel,including inducing neck and back pain.The purpose of this study was to examine the effects of 12 weeks of functional strength training on 1)the volume and strength of the neck and shoulder muscles and 2)muscular activity upon exposure to helmets of different masses and elevated Gz forces in a long-arm centrifuge in high-performance aircraft personnel.Methods:Eighteen participants underwent 12 weeks of functional strength training(n=12)or the control protocol(n=6)without additional strength training.Pre-and post-intervention tests included evaluations of isometric strength of the head extensor muscles,flexion,and lateral flexion and rotation,as well as magnetic resonance imaging(MRI)to measure the volume of the m.sternocleidomastoideus,m.trapezius,and deep neck muscles.Furthermore,during a long-arm centrifuge(+1.4 and+3Gz)protocol,the muscular activity levels of the m.sternocleidomastoideus,m.trapezius and m.erector spinae muscles were assessed without a flight helmet,with a helmet,and with a helmet and night vision goggles.Each participant’s perception of muscular strain was noted immediately after the long-arm centrifuge protocol.Results:The maximal isometric strength in all exercises and muscle volumes increased in the training group but not the control group(P<0.05).Relative muscle activity(%MVC)with a helmet decreased after the intervention in the training but not the control group(P=0.01).Relative muscle activity while wearing a helmet and night vision goggles was higher after intervention in the control group than in the training group(P<0.01).The perceived muscular strain of the neck muscles induced by the long-arm centrifuge did not differ between the groups.Conclusions:Twelve weeks of functional strength training improves the maximal isometric strength and volume of neck and shoulder muscles and leads to lower relative muscle activation upon exposure to elevated Gz forces in a long-arm centrifuge. | Monika Rausch Frank Weber Sven Kühn Carla Ledderhos Christoph Zinner Billy Sperlich | 2021 | Military Medical Research2021,8,4: | 4 |
| 20 | First performance evaluation of a dual-source CT (DSCT) system显示文摘 | Thomas G. Flohr Cynthia H. McCollough Herbert Bruder Martin Petersilka Klaus Gruber Christoph Sü? Michael Grasruck Karl Stierstorfer Bernhard Krauss Rainer Raupach Andrew N. Primak Axel Küttner Stefan Achenbach Christoph Becker Andreas Kopp Bernd M. Ohnes | 2006 | European Radiology2006,,6: | 3 |