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| 1 | 多环芳烃污染区域氧化多环芳烃的来源、迁移转化和毒性危害显示文摘本文阐明了在对高浓度多环芳烃污染区域进行风险评估和修复过程中,氧化多环芳烃是不容忽视的重要污染物。我们通过对自己的研究成果和公开发表资料的综合分析,发现在这些地方氧化多环芳烃的量较大,但并未受到足够重视。这些氧化多环芳烃是通过多环芳烃转化而来的,滞留时间也较长。许多修复方法会加速多环芳烃的降解,从而导致在环境中的氧化多环芳烃浓度升高。此外,我们发现尽管氧化多环芳烃与通过诱变和致癌等多环芳烃常见的毒害有区别的方式产生毒性,但他们对人类和环境也是有害的。我们还有数据支持以下假说:在环境中,具有极性的氧化多环芳烃比多环芳烃稳定性差,更易通过受污染地区的地表水和地下水扩散。因此在受多环芳烃污染区域,氧化多环芳烃应该纳入监测项目当中,而其它毒性相关成分如带硝基的多环芳烃和氮杂环芳烃等则不必纳入监洲项目当中。因为氧化多环芳烃有可能在多环芳烃发生降解的时候形成,而且它们的环境行为是完全不同的,也很难通过多环芳烃浓度来预测氧化多环芳烃的含量。 | Staffan Lundstedt Paul A.White Christine L.Lemieux Krista D.Lynes Iain B.Lambert Larsberg Peter Haglund Mats Tysklind 王丽平 | 2007 | AMBIO-人类环境杂志2007,36,6: | 11 |
| 2 | Role of contrast enhanced ultrasonography in the assessment of hepatic metastases:A review显示文摘Contrast enhanced ultrasonography(CEUS) has improved both the detection and characterization of foca liver lesions.It is now possible to evaluate in real time the perfusion of focal liver lesions in the arterial,porta and late contrast phases,and thus to characterize focal liver lesions with high diagnostic accuracy.As a result,CEUS has taken a central diagnostic role in the evaluation of focal liver lesions that are indeterminate upon computed tomography(CT) and magnetic resonance imaging.The combined use of second generation contrast agents and low mechanica index techniques is essential for the detection of liver metastases,and it now allows the examination of the entire liver in both the portal and late phases. Several studies have shown that using CEUS instead of conventional ultrasonography without contrast agents significantly improves sensitivity in detection of liver metastases.Furthermore,the detection rate with CEUS seems to be similar to that of CT.This review describes the clinical role of CEUS in detecting liver metastases,including details about examination techniques,features of metastases observed with CEUS,and clinical results and guidelines. | Lars Peter Skovgaard Larsen | 2010 | World Journal of Hepatology2010,2,1: | 10 |
| 3 | Fitness and health benefits of team handball training for young untrained women--A cross-disciplinary RCT on physiological adaptations and motivational aspects显示文摘Purpose: The present study evaluated the effects of regular participation in small-sided team handball training on body composition, osteogenic response, physical performance, and cardiovascular risk factors, as well as well-being and motivation, in young untrained women.Methods: Twenty-eight untrained 20- to 30-year-old women were randomized to a handball training group(HG; n = 14, height 170 ± 5 cm, weight 73 ± 11 kg, VO_(2peak) 37.7 ± 4.1 mL/min/kg) that trained 1.7 ± 0.3 times per week over 12 weeks(70 min 4 v 4 handball sessions) or an inactive control group(CG; n = 14, 169 ± 5 cm, 71 ± 12 kg, 38.1 ± 3.7 mL/min/kg). Physiological and psychological and motivational training adaptations were assessed pre-and post-intervention by dual-energy X-ray Absorptiometry(DXA) scans, blood sampling, physical tests, and questionnaires.Results: The average heart rate(HR) over all training sessions was equal to 85% ± 6% HR_(max). Between-group intervention effects were observed in favor of HG for muscle mass(2.1%, p = 0.024), proximal femur bone mineral density(0.8%, p = 0.041), Yo-Yo IE1 intermittent endurance test level 1(IE1) performance(35%, p < 0.001), and incremental treadmill test performance(11.5%, p = 0.003), but not total fat mass(p = 0.176),mean arterial blood pressure(p = 0.328), resting HR(p = 0.219), or blood lipids(p = 0.298—0.854). In CG, no changes were observed in any of the measured physiological variables after the training period. Compared to CG, HG had an increase in intrinsic motivation(p < 0.001) and in the well-being subscale 'energy'(p = 0.010).Conclusion: Participation in regular recreational team handball training organized as small-sided games has marked beneficial effects on physical performance, musculoskeletal fitness, well-being, and motivation in untrained young women. | Therese Hornstrup Johan M.Wikman Bjorn Fristrup Susana Povoas Eva W.Helge Signe H.Nielsen Jorn W.Helge Jesper L.Andersen Lars Nybo Peter Krustrup | 2018 | Journal of Sport and Health Science2018,7,2: | 8 |
| 4 | 欧洲血管外科学会指南:第1部分——颈动脉狭窄患者的预防显示文摘在此,我们呈献颈动脉狭窄患者脑血管事件二级预防的欧洲血管外科学会指南,包括降脂治疗、抗血小板治疗以及其他危险因素控制。这些推荐均基于现有的临床试验证据。对颈动脉疾病患者需要采取积极的预防性治疗。我们还讨论了颈动脉狭窄的诊断和分级。 | Christos D. Liapis Sir Peter F. Bell Dimitri P. Mikhailidis Juhani Sivenius Andrew Nicolaides Jose Femandes e Fernandes Giorgio Biasi Lars Norgren 董大伟(译) 刘小艳(译) 徐安定(译) | 2011 | 国际脑血管病杂志2011,19,6: | 7 |
| 5 | Experimental human pain models in gastro-esophageal reflux disease and unexplained chest pain显示文摘Methods related to experimental human pain research aim at activating different nociceptors, evoke pain from different organs and activate specific pathways and mechanisms. The different possibilities for using mechanical, electrical, thermal and chemical methods in visceral pain research are discussed with emphasis of combinations (e.g., the multimodal approach). The methods have been used widely in assessment of pain mechanisms in the esophagus and have contributed to our understanding of the symptoms reported in these patients. Hence abnormal activation and plastic changes of central pain pathways seem to play a major role in the symptoms in some patients with gastro-esophageal reflux disease and in patients with functional chest pain of esophageal origin. These findings may lead to an alternative approach for treatment in patients that does not respond to conventional medical or surgical therapy. | Asbjφrn Mohr Drewes Lars Arendt-Nielsen Peter Funch-Jensen Hans Gregersen | 2006 | World Journal of Gastroenterology2006,12,18: | 5 |
| 6 | Oxidative and nitrosative stress enzymes in relation to nitrotyrosine in Helicobacter pylori-infected humans显示文摘AIM: To compare a possible relation between Helicobacter pylori(H. pylori) and the oxygen- and nitrogen radical system in humans. METHODS: Mechanisms for H. pylori to interfere with the oxygen and nitrogen radical system is of great importance for understanding of the H. pylori persistence and pathogenesis. Biopsies were obtained from the gastric wall of 21 individuals. Ongoing infection with H. pylori was detected using direct analyze from the biopsies using campylobacter-like organism test(CLO-test) and/or by using 14C-urea breath test. The individuals were divided in a negative H. pylori and a positive H. pylori group. Expression in the gastric mucosa of induc-ible nitric oxide syntase(iNOS), nicotinamide adenine dinucleotide phosphate-oxidase(NADPH-oxidase) myeloperoxidase(MPO), and nitrotyrosine were assessed by Western blotting.RESULTS: The individuals who undervent gastroscopy were divided in a H. pylori neg. [n = 13, m/f = 7/6, age(mean) = 39] and a H. pylori pos. group [n = 8, m/f = 5/3, age(mean) = 53]. Using western blot analysis iNOS was detected as a 130 kDa band. The iNOS expression was upregulated in the antrum of H. pylori infected individuals in comparison to the controls, mean ± SD being 12.6 ± 2.4 vs 8.3 ± 3.1, P < 0.01. There was a markedly upregulated expression of MPO in the antrum of H. pylori infected individuals in comparison to the control group without infection. In several of noninfected controls it was not possible to detect any MPO expression at all, whereas the expression was high in all the infected subjects, mean ± SD being 5.1 ± 3.4 vs 2.1 ± 1.9, P < 0.05. The NADPH-oxidase expression was analysed by detecting the NADPH-oxidase subunit p47-phox expression. P47-phox was detected as a 47 kDa band using Western blot, and showed a significantly higher expression of p47-phox in the antrum of the H. pylori infected individuals compared to the controls, mean ± SD being 3.1 ± 2.2 vs 0.3 ± 0.2, P < 0.01. Regarding nitrotyrosine formation, Western blot did not show any significant increase or decrease compared to controls, 7.0 ± 0.9 vs 6.9 ± 1.1, not significant.CONCLUSION: iNOS, MPO and NADPH-oxidase was up-regulated among H. pylori infected. Regarding nitrotyrosine no difference was found. This support an H. pylori related inhibition of radical formation. | Anders Elfvin Anders Edebo Peter Hallersund Anna Casselbrant Lars Fndriks | 2014 | World Journal of Gastrointestinal Pathophysiology2014,5,3: | 5 |
| 7 | Heme oxygenase-1 overexpression increases liver injury after bile duct ligation in rats显示文摘AIM: To investigate the effects of heme oxygenase-1 (HO-1) against oxidant-induced injury caused by bile duct ligation (BDL). METHODS: Either cobalt protoporphyrin (CoPP), a HO-1 inducer, or saline were injected intraperitoneally in male SD-rats. Three days later, BDL or sham-operations were performed. Rats were sacrificed 3 wk after BDL and livers were harvested for histology. Fibrosis was evaluated by sirius red staining and image analysis. Alpha-smooth muscular actin, which indicates activation of stellate cells, was detected by immunohistochemical staining, and cytokine and collagen-Ⅰα (Col-Ⅰα) mRNA expression was detected using RNase protection assays. RESULTS: Serum alanine transaminase increased 8-fold above normal levels one day after BDL. Surprisingly, enzyme release was not reduced in rats receiving CoPP. Liver fibrosis was evaluated 3 wk after BDL and the sirius red-positive area was found to be increased to about 7.8%. However, in CoPP pretreated rats sirius red- positive areas were increased to about 11.7% after BDL. Collagen-Ⅰα and TGF-β mRNA increased significantly by BDL. Again, this effect was increased by HO-1 overexpression.CONCLUSION: Hepatic fibrosis due to BDL is not reduced by the HO-1 inducer CoPP. In contrast, HO-1 overexpression increases liver injury in rats under conditions of experimental chronic cholestasis. | Matthias Froh Lars Conzelmann Peter Walbrun Susanne Netter Reiner Wiest Michael D Wheeler Mark Lehnert Takehiko Uesugi Jurgen Scholmerich Ronald G Thurman | 2007 | World Journal of Gastroenterology2007,13,25: | 4 |
| 8 | Is the pain in chronic pancreatitis of neuropathic origin? Support from EEG studies during experimental pain显示文摘AIM: To prove the hypothesis that patients with chronic pancreatitis would show increased theta activity during painful visceral stimulation. METHODS: Eight patients and 12 healthy controls underwent an experiment where the esophagus was electrically stimulated at the pain threshold using a nasal endoscope. The electroencephalogram (EEG) was recorded from 64 surface electrodes and 'topographic matching pursuit' was used to extract the EEG information in the early brain activation after stimulation. RESULTS: A major difference between controls and patients were seen in delta and theta bands, whereas there were only minor differences in other frequency bands. In the theta band, the patients showed higher activity than controls persisting throughout the 450 ms of analysis with synchronous brain activation betweenthe channels. The main theta components oscillated with 4.4 Hz in the patients and 5.5 Hz in the controls. The energy in the delta (0.5-3.5 Hz) band was higher in the controls, whereas the patients only showed scattered activity in this band. CONCLUSION: The differences in the theta band indicate that neuropathic pain mechanisms are involved in chronic pancreatitis. This has important implications for the understanding and treatment of pain in these patients, which should be directed against drugs with effects on neuropathic pain disorders. | AsbjФrn M Drewes Maciej Gratkowski Saber AK Sami Georg Dimcevski Peter Funch-Jensen Lars Arendt-Nielsen | 2008 | World Journal of Gastroenterology2008,14,25: | 4 |
| 9 | In Situ Etching for Total Control Over Axial and Radial Nanowire Growth显示文摘We report a method using in situ etching to decouple the axial from the radial nanowire growth pathway,independent of other growth parameters.Thereby a wide range of growth parameters can be explored to improve the nanowire properties without concern of tapering or excess structural defects formed during radial growth.We demonstrate the method using etching by HCl during InP nanowire growth.The improved crystal quality of etched nanowires is indicated by strongly enhanced photoluminescence as compared to reference nanowires obtained without etching. | Magnus T.Borgström Jesper Wallentin Johanna Trägårdh Peter Ramvall Martin Ek LReine Wallenberg Lars Samuelson Knut Deppert | 2010 | Nano Research2010,3,4: | 4 |
| 10 | A lexicon for endoscopic adverse events: report of an ASGE workshop显示文摘 | Peter B. Cotton Glenn M. Eisen Lars Aabakken Todd H. Baron Matt M. Hutter Brian C. Jacobson Klaus Mergener Albert Nemcek Bret T. Petersen John L. Petrini Irving M. Pike Linda Rabeneck Joseph Romagnuolo John J. Vargo | 2010 | Gastrointestinal Endoscopy2010,,3: | 3 |
| 11 | Sensory-motor responses to mechanical stimulation of the esophagus after sensitization with acid显示文摘AIM: Sensitization most likely plays an important role in chronic pain disorders, and such sensitization can be mimicked by experimental acid perfusion of the esophagus.The current study systematically investigated the sensory and motor responses of the esophagus to controlled mechanical stimuli before and after sensitization.METHODS: Thirty healthy subjects were included.Distension of the distal esophagus with a balloon was performed before and after perfusion with 0.1 mol/L hydrochloric acid for 30 min. An impedance planimetry system was used to measure cross-sectional area,volume, pressure, and tension during the distensions. A new model allowed evaluation of the phasic contractions by the tension during contractions as a function of the initial muscle length before the contraction (comparable to the Frank-Starling law for the heart). Length-tension diagrams were used to evaluate the muscle tone before and after relaxation of the smooth muscle with butylscopolamine.RESULTS: The sensitization resulted in allodynia and hyperalgesia to the distension volumes, and the degree of sensitization was related to the infused volume of acid. Furthermore, a nearly 50% increase in the evoked referred pain was seen after sensitization. The mechanical analysis demonstrated hyper-reactivity of the esophagus following acid perfusion, with an increased number and force of the phasic contractions, but the muscle tone did not change.CONCLUSION: Acid perfusion of the esophagus sensitizes the sensory pathways and facilitates secondary contractions.The new model can be used to study abnormal sensorymotor mechanisms in visceral organs. | Asbjφrn Mohr Drewes Hariprasad Reddy Camilla Staahl Jan Pedersen Peter Funch-Jensen Lars Arendt-Nielsen Hans Gregersen | 2005 | World Journal of Gastroenterology2005,11,28: | 3 |
| 12 | Symposia Report Immunoglobulin G for the Treatment of Chronic Pain:Report of an Expert Workshop显示文摘背景:慢性疼痛的治疗效果仍不理想。尽管现在治疗慢性疼痛的药物种类较多,但许多患者对疗效仍不满意或诉药物的副作用太大。越来越多的证据表明,免疫系统参与了伤害性和神经病理性慢性疼痛的病理过程。设计:在英国利物浦的专题会议上,专家们出示了免疫系统参与慢性疼痛的证据。近来的研究表明,静脉(IVIg)或皮下(SCIg)注射免疫调节药物——多价免疫球蛋白(Ig G)可缓解外周神经病理性疼痛和其他疼痛性疾病。专题会议讨论了IVIg和SCIg治疗的适应证、效价比及其副作用。结果:Ig G可缓解某些伤害性和神经病理性慢性疼痛,如糖尿病、干燥综合征、纤维肌痛症、复杂性区域疼痛综合征、小儿麻痹后遗症和继发于病理性自身抗体的疼痛。结论:Ig G对某些慢性疼痛具有一定的治疗前景。Ig G是一种相对安全的治疗方法,副作用少而轻,但价格较贵。今后有必要对Ig G治疗顽固性疼痛进行随机对照研究和预测性临床试验。 | Stefano Tamburin Kristian Borg Xavier J. Caro Stefano Jann Alexander J. Clark Francesca Magrinelli Gen Sobue Lars Werhagen Giampietro Zanette Haruki Koike Peter J. Spath Angela Vincent Andreas Goebel | 2014 | 中国疼痛医学杂志2014,20,11: | 3 |
| 13 | Regulation of MLH1 mRNA and protein expression by promoter methylation in primary colorectal cancer: a descriptive and prognostic cancer marker study显示文摘 | Lars Henrik Jensen Anders Aamann Rasmussen Lene Byriel Hidekazu Kuramochi Dorthe Gylling Crüger Jan Lindebjerg Peter V. Danenberg Anders Jakobsen Kathleen Danenberg | 2013 | Cellular Oncology2013,,5: | 2 |
| 14 | Space for people, plants, and livestock? Quantifying interactions among multiple landscape functions in a Dutch rural region显示文摘 | Louise Willemen Lars Hein Martinus E.F. van Mensvoort Peter H. Verburg | 2009 | Ecological Indicators2009,,1: | 2 |
| 15 | Gastric Bypass Leads to Improvement of Diabetic Neuropathy Independent of Glucose Normalization—Results of a Prospective Cohort Study (DiaSurg 1 Study)显示文摘 | Beat P. Müller-Stich Lars Fischer Hannes G. Kenngott Matthias Gondan Jonas Senft Gabriella Clemens Felix Nickel Thomas Fleming Peter P. Nawroth Markus W. Büchler | 2013 | Annals of Surgery2013,,5: | 2 |
| 16 | PET/MR in children. Initial clinical experience in paediatric oncology using an integrated PET/MR scanner显示文摘 | Franz Wolfgang Hirsch Bernhard Sattler Ina Sorge Lars Kurch Adrian Viehweger Lutz Ritter Peter Werner Thies Jochimsen Henryk Barthel Uta Bierbach Holger Till Osama Sabri Regine Kluge | 2013 | Pediatric Radiology2013,,: | 2 |
| 17 | Shot-noise limited, supercontinuum-based optical coherence tomography显示文摘We present the first demonstration of shot-noise limited supercontinuum-based spectral domain optical coherence tomography(SD-OCT)with an axial resolution of 5.9μm at a center wavelength of 1370 nm.Current supercontinuumbased SD-OCT systems cannot be operated in the shot-noise limited detection regime because of severe pulse-topulse relative intensity noise of the supercontinuum source.To overcome this disadvantage,we have developed a low-noise supercontinuum source based on an all-normal dispersion(ANDi)fiber,pumped by a femtosecond laser.The noise performance of our 90 MHz ANDi fiber-based supercontinuum source is compared to that of two commercial sources operating at 80 and 320 MHz repetition rate.We show that the low-noise of the ANDi fiber-based supercontinuum source improves the OCT images significantly in terms of both higher contrast,better sensitivity,and improved penetration.From SD-OCT imaging of skin,retina,and multilayer stacks we conclude that supercontinuumbased SD-OCT can enter the domain of shot-noise limited detection. | Shreesha Rao D.S. Mikkel Jensen Lars Grüner-Nielsen Jesper Toft Olsen Peter Heiduschka Björn Kemper Jürgen Schnekenburger Martin Glud Mette Mogensen Niels Møller Israelsen Ole Bang | 2021 | Light(Science & Applications)2021,10,7: | 2 |
| 18 | PNPLA3 I148M (rs738409) genetic variant is associated with hepatocellular carcinoma in obese individuals显示文摘 | Maria Antonella Burza Carlo Pirazzi Cristina Maglio Kajsa Sj?holm Rosellina Margherita Mancina Per-Arne Svensson Peter Jacobson Martin Adiels Marco Giorgio Baroni Jan Borén Stefano Ginanni Corradini Tiziana Montalcini Lars Sj?str?m Lena Mariana Susann Car | 2012 | Digestive and Liver Disease2012,,12: | 2 |
| 19 | A lexicon for endoscopic adverse events: report of an ASGE workshop显示文摘 | Peter B. Cotton Glenn M. Eisen Lars Aabakken Todd H. Baron Matt M. Hutter Brian C. Jacobson Klaus Mergener Albert Nemcek Bret T. Petersen John L. Petrini Irving M. Pike Linda Rabeneck Joseph Romagnuolo John J. Vargo | 2010 | Gastrointestinal Endoscopy2010,,3: | 2 |
| 20 | Dual-polarization wavelength conversion of 16-QAM signals in a single silicon waveguide with a lateral p-i-n diode[Invited]显示文摘A polarization-diversity loop with a silicon waveguide with a lateral p-i-n diode as a nonlinear medium is used to realize polarization insensitive four-wave mixing. Wavelength conversion of seven dual-polarization 16-quadrature amplitude modulation(QAM) signals at 16 GBd is demonstrated with an optical signal-to-noise ratio penalty below 0.7 dB. High-quality converted signals are generated thanks to the low polarization dependence(≤0.5 dB) and the high conversion efficiency(CE) achievable. The strong Kerr nonlinearity in silicon and the decrease of detrimental free-carrier absorption due to the reverse-biased p-i-n diode are key in ensuring high CE levels. | FRANCESCO DA Ros ANDRZEJ GAJDA ERIK LIEBIG EDSON P.DA SILVA ANNA PECZEK PETER D.GIROUARD ANDREAS MAI KLAUS PETERMANN LARS ZIMMERMANN MICHAEL GALILI LEIF K.OXENLOWE | 2018 | Photonics Research2018,6,5: | 1 |