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| 1 | Helicobacter pylori in human health and disease:Mechanisms for local gastric and systemic effects显示文摘Helicobacter pylori(H. pylori) is present in roughly 50% of the human population worldwide and infection levels reach over 70% in developing countries. The infection has classically been associated with different gastro-intestinal diseases, but also with extra gastric diseases. Despite such associations, the bacterium frequently persists in the human host without inducing disease, and it has been suggested that H. pylori may also play a beneficial role in health. To understand how H. pylori can produce such diverse effects in the human host, several studies have focused on understanding the local and systemic effects triggered by this bacterium. One of the main mechanisms by which H. pylori is thought to damage the host is by inducing local and systemic inflammation. However, more recently, studies are beginning to focus on the effects of H. pylori and its metabolism on the gastric and intestinal microbiome. The objective of this review is to discuss how H. pylori has co-evolved with humans, how H. pylori presence is associated with positive and negative effects in human health and how inflammation and/or changes in the microbiome are associated with the observed outcomes. | Denisse Bravo Anilei Hoare Cristopher Soto Manuel A Valenzuela Andrew FG Quest | 2018 | World Journal of Gastroenterology2018，24，28： | 32 |
| 2 | Helicobacter pylori-induced inflammation and epigenetic changes during gastric carcinogenesis显示文摘The sequence of events associated with the development of gastric cancer has been described as 'the gastric precancerous cascade'. This cascade is a dynamic process that includes lesions, such as atrophic gastritis, intestinal metaplasia and dysplasia. According to this model, Helicobacter pylori(H. pylori) infection targets the normal gastric mucosa causing non-atrophic gastritis, an initiating lesion that can be cured by clearing H. pylori with antibiotics or that may then linger in the case of chronic infection and progress to atrophic gastritis. The presence of virulence factors in the infecting H. pylori drives the carcinogenesis process. Independent epidemiological and animal studies have confirmed the sequential progression of these precancerous lesions. Particularly long-term follow-up studies estimated a risk of 0.1% for atrophic gastritis/intestinal metaplasia and 6% in case of dysplasia for the long-term development of gastric cancer. With this in mind, a better understanding of the genetic and epigenetic changes associated with progression of the cascade is critical in determining the risk of gastric cancer associated with H. pylori infection. In this review, we will summarize some of the mostrelevant mechanisms and focus predominantly but not exclusively on the discussion of gene promoter methylation and mi RNAs in this context. | Manuel A Valenzuela Jimena Canales Alejandro H Corvalán Andrew FG Quest | 2015 | World Journal of Gastroenterology2015，21，45： | 33 |
| 3 | Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence显示文摘Chiral nanomaterials with intrinsic chirality or spatial asymmetry at the nanoscale are currently in the limelight of both fundamental research and diverse important technological applications due to their unprecedented physicochemical characteristics such as intense light-matter interactions, enhanced circular dichroism, and strong circularly polarized luminescence. Herein, we provide a comprehensive overview of the state-of-the-art advances in liquid crystal-templated chiral nanomaterials. The chiroptical properties of chiral nanomaterials are touched, and their fundamental design principles and bottom-up synthesis strategies are discussed. Different chiral functional nanomaterials based on liquid-crystalline soft templates, including chiral plasmonic nanomaterials and chiral luminescent nanomaterials, are systematically introduced, and their underlying mechanisms, properties, and potential applications are emphasized. This review concludes with a perspective on the emerging applications, challenges, and future opportunities of such fascinating chiral nanomaterials. This review can not only deepen our understanding of the fundamentals of soft-matter chirality, but also shine light on the development of advanced chiral functional nanomaterials toward their versatile applications in optics, biology, catalysis, electronics, and beyond. | Xuan Zhang Yiyi Xu Cristian Valenzuela Xinfang Zhang Ling Wang Wei Feng Quan Li | 2022 | Light(Science & Applications)2022，11，8： | 6 |
| 4 | Clinical and Genetic Investigation of a Multi-generational Chinese Family Afflicted with Von Hippel-Lindau Disease显示文摘 | Jingyao Zhang Jie Ma Xiaoyun Du Dapeng Wu Hong Ai Jigang Bai Shunbin Dong Qinling Yang Kai Qu Yi Lyu Robert K Valenzuela Chang Liu | 2015 | Chinese Medical Journal2015，，1： | 6 |
| 5 | Clinical and historical features of emergency department patients with pericardial effusions显示文摘BACKGROUND: Diagnosing pericardial effusion is critical for optimal patient care. Typically, clinicians use physical examination ? ndings and historical features suggesting pericardial effusion to determine which patients require echocardiography. The diagnostic characteristics of these tools are not well described. The objective of this study is to determine the prevalence of historical features and sensitivity of clinical signs to inform clinicians when to proceed with echocardiogram.METHODS: A retrospective review of point-of-care echocardiograms performed over a two and a half year period in two emergency departments were reviewed for the presence of a pericardial effusion. Patient charts were reviewed and abstracted for presenting symptoms, historical features and clinical findings. The prevalence of presenting symptoms and historical features and the sensitivity of classic physical examination ? ndings associated with pericardial effusion and tamponade were determined.RESULTS: One hundred and fifty-three patients with pericardial effusion were identified. Of these patients, the most common presenting complaint was chest pain and shortness of breath. Patients had no historical features that would suggest pericardial effusion in 37.5% of cases. None of the patients with pericardial effusion or pericardial tamponade had all of the elements of Beck's triad. The sensitivity of Beck's triad was found to be 0(0%–19.4%). The sensitivity for one ? nding of Beck's triad to diagnose pericardial tamponade was 50%(28.0%–72.0%).CONCLUSION: History and physical examination findings perform poorly as tests for the diagnosis of pericardial effusion or pericardial tamponade. Clinicians must liberally evaluate patients suspected of having a pericardial effusion with echocardiography. | Lori Stolz Josephine Valenzuela Elaine Situ-LaCasse Uwe Stolz Nicolas Hawbaker Matthew Thompson Srikar Adhikari | 2017 | World Journal of Emergency Medicine2017，8，1： | 4 |
| 6 | Optimal length of triple therapy for H pylori eradication in a population with high prevalence of infection in Chile显示文摘AIM:To compare the efficacy of 7-d versus 14-d triple therapy for the treatment of H pylori infection in Chile,with a prevalence of 73% in general population. METHODS:H pylori-infected patients diagnosed by rapid urease test,with non-ulcer dyspepsia or peptic ulcer disease were randomized to receive omeprazole 20 mg bid,amoxicillin 1 g bid,and clarithromycin 500 mg bid for 7 (OAC7) or 14 (OAC14) d. Primary outcome was eradication rate 6 wk after the treatment. Subgroup analysis was carried out considering the eradication rate among patients with or without peptic ulcer disease and eradication rate among smokers or non-smokers. RESULTS:One hundred and thirty-one patients were randomized to OAC7 (n = 69) or OAC14 (n = 62). The overall eradication rate (intention-to-treat) was 78.3% in OAC7 and 85.5% in OAC14 groups,without a significant difference (P =0.37). No significant difference in the eradication rate was found among the patients with peptic ulcer disease (n = 31) between the OAC7 group (85.7%) and OAC14 group (87.5%). However,smokers had an obviously lower eradication rate compared to non-smokers,particularly in the OAC7 group (57.1% in smokers vs 83.6% in non-smokers; P = 0.06). Adverse effects rate were similar between both groups. CONCLUSION:Short-term efficacy of triple therapy with OAC for 7 d is comparable to 14 d in this high-prevalence population. Longer follow-up,and studies focused to some subgroups of patients (smokers and non-ulcerpatients) are necessary to support widespread use of 7-d instead of 10-14-d triple therapy in a developing country like Chile. | Arnoldo Riquelme Alejandro Soza Cesar Pedreros Andrea Bustamante Felipe Valenzuela Francisco Otarola Eduardo Abbott Marco Arellano Brenda Medina Alejandro Pattillo Douglas Greig Marco Arrese Antonio Rollan | 2007 | World Journal of Gastroenterology2007，13，21： | 3 |
| 7 | CD133 expression is not restricted to stem cells, and both CD133^sup +^ and CD133^sup -^ metastatic colon cancer cells initiate tumors显示文摘 | Shmelkov Sergey V Butler Jason M Hooper Andrea T Hormigo Adilia Kushner Jared Milde Till Clair Ryan St Baljevic Muhamed White Ian Jin David K Chadburn Amy Murphy Andrew J Valenzuela David M Gale Nicholas W Thurston Gavin Yancopoulos George | 2008 | Journal of Clinical Investigation2008，，： | 2 |
| 8 | Development and Optimization of an Alternative Methodology for Detection of Milk Adulteration by Water显示文摘 | Wesley William Gongalves Nascimento Marcone Augusto Leal de Oliveira1 Marcone Augusto Leal de Oliveira Marco Antonio Moreira Furtado Virgilio de Carvalho dos Anjos Maria Jose Valenzuela Bell | 2013 | Journal of Food Science and Engineering2013，3，7： | 2 |
| 9 | RORγ-Expressing Th17 Cells Induce Murine Chronic Intestinal Inflammation via Redundant Effects of IL-17A and IL-17F显示文摘 | Moritz Leppkes Christoph Becker Ivaylo I. Ivanov Sebastian Hirth Stefan Wirtz Clemens Neufert Sandrine Pouly Andrew J. Murphy David M. Valenzuela George D. Yancopoulos Burkhard Becher Dan R. Littman Markus F. Neurath | 2009 | Gastroenterology2009，，1： | 2 |
| 10 | Angiopoietins 3 and 4:Diverging gene counter part sin mice and humans显示文摘 | Valenzuela DM Griffiths JA Rojas J | 1999 | Proc Natl Acad Sci USA1999，96，5： | 2 |
| 11 | Modeling and simulation of consumer response to dynamic pricing with enabled technologies显示文摘 | Jorge Valenzuela Prakash R. Thimmapuram Jinho Kim | 2011 | Applied Energy2011，，： | 2 |
| 12 | What is the ideal approach for emergent pericardiocentesis using point-of-care ultrasound guidance?显示文摘BACKGROUND:Traditionally performed using a subxiphoid approach,the increasing use of point-of-care ultrasound in the emergency department has made other approaches(parasternal and apical)for pericardiocentesis viable.The aim of this study is to identify the ideal approach for emergency-physician-performed ultrasound-guided pericardiocentesis as determined by ultrasound image quality,distance from surface to pericardial fl uid,and likely obstructions or complications.METHODS:A retrospective review of point-of-care cardiac ultrasound examinations was performed in two urban academic emergency departments for the presence of pericardial eff usions.The images were reviewed for technical quality,distance of eff usion from skin surface,and predicted complications.RESULTS:A total of 166 pericardial effusions were identified during the study period.The mean skin-to-pericardial fl uid distance was 5.6 cm(95%confi dence interval[95%CI]5.2-6.0 cm)for the subxiphoid views,which was signifi cantly greater than that for the parasternal(2.7 cm[95%CI 2.5-2.8 cm],P<0.001)and apical(2.5 cm[95%CI 2.3-2.7 cm],P<0.001)views.The subxiphoid view had the highest predicted complication rate at 79.7%(95%CI 71.5%-86.4%),which was signifi cantly greater than the apical(31.9%;95%CI 21.4%-44.0%,P<0.001)and parasternal(20.2%;95%CI 12.8%-29.5%,P<0.001)views.CONCLUSIONS:Our results suggest that complication rates with pericardiocentesis will be lower via the parasternal or apical approach compared to the subxiphoid approach.The distance from skin to fl uid collection is the least in both of these views. | Lori Stolz Elaine Situ-LaCasse Josie Acuña Matthew Thompson Nicolaus Hawbaker Josephine Valenzuela Uwe Stolz Srikar Adhikari | 2021 | World Journal of Emergency Medicine2021，12，3： | 2 |
| 13 | Interleukin-22 but Not Interleukin-17 Provides Protection to Hepatocytes during Acute Liver Inflammation显示文摘 | Lauren A. Zenewicz George D. Yancopoulos David M. Valenzuela Andrew J. Murphy Margaret Karow Richard A. Flavell | 2007 | Immunity2007，，4： | 2 |
| 14 | Recursive reconstruction of high resolution image from noisy undersampled multiframes 显示文摘 | Kim S P Bose N K Valenzuela H M | 1990 | IEEE Trans Acoust Speech Signal Processing1990，38，6： | 1 |
| 15 | In Vivo Transfection of the Mouse Vas Deference 显示文摘 | Valenzuela M Relloso M Esponda P | 2002 | J Exp Zoo2002，，293： | 1 |
| 16 | Effect of the metal- to- wire ratio on the high -frequency magnetoim-pedance of glass - coated CoFeBSi amorphous microwires 显示文摘 | Valenzuela R Fessant A Gieraltowski J | 2008 | Sensors and Actuators A2008，142，2： | 1 |
| 17 | Barrier proteins remodel and modify chromatin to restrict silenced domains显示文摘 | Oki M Valenzuela L Chiba T | 2004 | Mol Cell Biol2004，24，： | 1 |
| 18 | General design theory for single-layer homogeneous absorbers 显示文摘 | Valenzuela A | 1996 | IEEE Trans1996，4，7： | 1 |
| 19 | Colitis cystica profunda imaging diagnosis and conservative treatment report of two cases显示文摘 | Valenzuela M Martin-Ruiz JL Alvarez-Cienfuegos H | 1996 | Dis Colon Rectum1996，39，5： | 1 |
| 20 | Propane dehydrogenation activity of Pt and PtSn catalysts supportedon magnesium aluminate : influence of steam and hydrogen 显示文摘 | Aguilar Rios G Salas P Valenzuela M A | 1999 | Catal Left1999，60，12： | 1 |
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