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237篇 您的检索式:作者名="CECILIA A"
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1Serrated colorectal cancer: Molecular classification, prognosis, and response to chemotherapy显示文摘Molecular advances support the existence of an alternative pathway of colorectal carcinogenesis that is based on the hypermethylation of specific DNA regions that silences tumor suppressor genes. This alternative pathway has been called the serrated pathway due to the serrated appearance of tumors in histological analysis. New classifications for colorectal cancer(CRC) were proposed recently based on genetic profiles that show four types of molecular alterations: BRAF gene mutations, KRAS gene mutations, microsatellite instability, and hypermethylation of Cp G islands. This review summarizes what is known about the serrated pathway of CRC, including CRC molecular and clinical features, prognosis, and response to chemotherapy.Oscar Murcia Miriam Juárez Eva Hernández-Illán Cecilia Egoavil Mar Giner-Calabuig María Rodríguez-Soler Rodrigo Jover 2016World Journal of Gastroenterology2016,22,13:18
2稀土离子(Ce^(3+),Tb^(3+),Pr^(3+))掺杂重金属锗酸盐玻璃的光谱透过及抗辐射性能显示文摘从新型抗辐射闪烁体材料的应用背景出发 ,对某些稀土离子掺杂重金属锗酸盐玻璃进行了紫外与可见光谱区的透过性能及抗辐射性能的表征 ,重点讨论玻璃基质组成与短波截止波长之间的关系以及一些元素对玻璃抗辐射性能的影响。玻璃基质组成涉及GeO2 ,Gd2 O3,BaO ,SnO ,La2 O3,掺杂的稀土元素包括Ce3+ ,Tb3+ ,Pr3+ 。实验结果表明 :这些重金属锗酸盐玻璃的紫外截止波长适中 ( 35 0nm ) ,适于用作掺杂稀土离子的基质材料。Sn2 + 和Ce3+ 使玻璃的紫外截止波长明显红移 ,其原因与特殊的紫外吸收机理有关。在所加入的元素中 ,Sn2 +和稀土离子Ce3+ ,Tb3+ ,Pr3+ 均对玻璃的抗辐射性能有增强作用 ,其中以Ce3+ 抗辐射效应最为明显 。陈国荣 BACCARO S 聂佳相 张永辉 杜永娟 CECILIA A 汪山 2003硅酸盐学报2003,31,7:16
3Viral hepatitis update: Progress and perspectives显示文摘Viral hepatitis,secondary to infection with hepatitis A,B,C,D,and E viruses,are a major public health problem and an important cause of morbidity and mortality.Despite the huge medical advances achieved in recent years,there are still points of conflict concerning the pathogenesis,immune response,development of new and more effective vaccines,therapies,and treatment.This review focuses on the most important research topics that deal with issues that are currently being solved,those that remain to be solved,and future research directions.For hepatitis A virus we will address epidemiology,molecular surveillance,new susceptible populations as well as environmental and food detections.In the case of hepatitis B virus,we will discuss host factors related to disease,diagnosis,therapy,and vaccine improvement.On hepatitis C virus,we will focus on pathogenesis,immune response,direct action antivirals treatment in the context of solid organ transplantation,issues related to hepatocellular carcinoma development,direct action antivirals resistance due to selection of resistanceassociated variants,and vaccination.Regarding hepatitis D virus,we describe diagnostic methodology,pathogenesis,and therapy.Finally,for hepatitis E virus,we will address epidemiology(including new emerging species),diagnosis,clinical aspects,treatment,the development of a vaccine,and environmental surveillance.María B Pisano Cecilia G Giadans Diego M Flichman Viviana E Ré María V Preciado Pamela Valva 2021World Journal of Gastroenterology2021,27,26:8
4Staging of portal hypertension and portosystemic shunts using dynamic nuclear medicine investigations显示文摘AIM: To explore portal hypertension and portosys-temic shunts and to stage chronic liver disease (CLD) based on the pathophysiology of portal hemodynam-ics. METHODS: Per-rectal portal scintigraphy (PRPS) was performed on 312 patients with CLD and liver angio-scintigraphy (LAS) on 231 of them. The control group included 25 healthy subjects. We developed a new model of PRPS interpretation by introducing two new parameters,the liver transit time (LTT) and the circu-lation time between right heart and liver (RHLT). LTT for each lobe was used to evaluate the early portal hypertension. RHLT is useful in cirrhosis to detect liver areas missing portal in? ow. We calculated the classical per-rectal portal shunt index (PRSI) at PRPS and the hepatic perfusion index (HPI) at LAS. RESULTS: The normal LTT value was 24 ± 1 s. Abnor-mal LTT had PPV = 100% for CLD. Twenty-seven non-cirrhotic patients had LTT increased up to 35 s (median 27 s). RHLT (42 ± 1 s) was not related to liver disease. Cirrhosis could be excluded in all patients with PRSI < 5% (P < 0.01). PRSI > 30% had PPV = 100% for cirrhosis. Based on PRPS and LAS we propose the clas-sifi cation of CLD in 5 hemodynamic stages. Stage 0 is normal (LTT = 24 s,PRSI < 5%). In stage 1,LTT is increased,while PRSI remains normal. In stage 2,LTT is decreased between 16 s and 23 s,whereas PRSI is increased between 5% and 10%. In stage 3,PRSI is increased to 10%-30%,and LTT becomes undetect-able by PRPS due to the portosystemic shunts. Stage 4 includes the patients with PRSI > 30%. RHLT and HPI were used to subtype stage 4. In our study stage 0 had NPV = 100% for CLD,stage 1 had PPV = 100% for non-cirrhotic CLD,stages 2 and 3 represented the transition from chronic hepatitis to cirrhosis,stage 4 had PPV = 100% for cirrhosis. CONCLUSION: LTT allows the detection of early por-tal hypertension and of opening of transhepatic shunts. PRSI is useful in CLD with extrahepatic portosystemic shunts. Our hemodynamic model stages the evolution of portal hypertension and portosystemic shunts. It may be of use in the selection of patients for interferon therapy.Mircea Dragoteanu Ioan A Balea Liliana A Dina Cecilia D Piglesan Ioana Grigorescu Stefan Tamas Sabin O Cotul 2008World Journal of Gastroenterology2008,14,24:7
5Incretins and selective renal sodium-glucose co-transporter 2 inhibitors in hypertension and coronary heart disease显示文摘Hyperglycemia is associated with an increased risk of cardiovascular disease,and the consequences ofintensive therapy may depend on the mechanism of the anti-diabetic agent(s)used to achieve a tight control.In animal models,stable analogues of glucagon-like peptide-1(GLP-1)were able to reduce body weight and blood pressure and also had favorable effects on ischemia following coronary reperfusion.In a similar way,dipeptidyl peptidase IV(DPPIV)showed to have favorable effects in animal models of ischemia/reperfusion.This could be due to the fact that DPPIV inhibitors were able to prevent the breakdown of GLP-1 and glucose-dependent insulinotropic polypeptide,but they also decreased the degradation of several vasoactive peptides.Preclinical data for GLP-1,its derivatives and inhibitors of the DPPIV enzyme degradation suggests that these agents may be able to,besides controlling glycaemia,induce cardio-protective and vasodilator effects.Notwithstanding the many favorable cardiovascular effects of GLP-1/incretins reported in different studies,many questions remain unanswered due the limited number of studies in human beings that aim to examine the effects of GLP-1 on cardiovascular endpoints.For this reason,long-term trials searching for positive cardiovascular effects are now in process,such as the CAROLINA and CARMELINA trials,which are supported by small pilot studies performed in humans(and many more animal studies)with incretin-based therapies.On the other hand,selective renal sodium-glucose co-transporter 2 inhibitors were also evaluated in the prevention of cardiovascular outcomes in type 2 diabetes.However,it is quite early to draw conclusions,since data on cardiovascular outcomes and cardiovascular death are limited and long-term studies are still ongoing.In this review,we will analyze the mechanisms underlying the cardiovascular effects of incretins and,at the same time,we will present a critical position about the real value of these compounds in the cardiovascular system and its protection.Ramiro A Sanchez Hugo Sanabria Cecilia de los Santos Agustin J Ramirez 2015World Journal of Diabetes2015,6,11:5
6Management of oligometastatic non-small cell lung cancer patients:Current controversies and future directions显示文摘Oligometastatic non-small cell lung cancer(NSCLC)describes an intermediate stage of NSCLC between localized and widely-disseminated disease.This stage of NSCLC is characterized by a limited number of metastases and a more indolent tumor biology.Currently,the management of oligometastatic NSCLC involves radical treatment(radiotherapy or surgery)that targets the metastatic lesions and the primary tumor to achieve disease control.This approach offers the potential to achieve prolonged survival in patients who,in the past,would have only received palliative measures.The optimal therapeutic strategies for the different scenarios of oligometastatic disease(intracranial vs extracranial disease,synchronous vs metachronous)remain undefined.Given the lack of head-to-head studies comparing radiotherapy to surgery in these patients,the decision to apply surgery or radiotherapy(with or without systemic treatment)must be based on prognostic factors that allow us to classify patients.This classification will allow us to select the most appropriate therapeutic strategy on an individualized basis.In the future,the molecular or microRNA profiles will likely improve the treatment selection process.The objective of the present article is to review the most relevant scientific evidence on the management of patients with oligometastatic NSCLC,focusing on the role of radiotherapy and surgery.We also discuss areas of controversy and future directions.Felipe Counago Javier Luna Luis Leonardo Guerrero Blanca Vaquero María Cecilia Guillén-Sacoto Teresa González-Merino Begona Taboada Verónica Díaz Belén Rubio-Viqueira Ana Aurora Díaz-Gavela Francisco JoséMarcos Elia del Cerro 2019World Journal of Clinical Oncology2019,10,10:5
7Facility-based constraints to exchange transfusions for neonatal hyperbilirubinemia in resource-limited settings显示文摘Several clinical guidelines for the management of infants with severe neonatal hyperbilirubinemia recommend immediate exchange transfusion(ET) when the risk or presence of acute bilirubin encephalopathy is established in order to prevent chronic bilirubin encephalopathy or kernicterus. However, the literature is sparse concerning the interval between the time the decision for ET is made and the actual initiation of ET, especially in low- and middle-income countries(LMICs) with significant resource constraints but high rates of ET. This paper explores the various stages and potential delays during this interval in complying with the requirement for immediate ET for the affected infants, based on the available evidence from LMICs. The vital role of intensive phototherapy, efficient laboratory and logistical support, and clinical expertise for ET are highlighted. The challenges in securing informed parental consent, especially on religious grounds, and meeting the financial burden of this emergency procedure to facilitate timely ET are examined. Secondary delays arising from posttreatment bilirubin rebound with intensive phototherapy or ET are also discussed. These potential delays can compromise the effectiveness of ET and should provide additional impetus to curtail avoidable ET in LMICs.Cecilia A Mabogunje Sarah M Olaifa Bolajoko O Olusanya 2016World Journal of Clinical Pediatrics2016,5,2:4
8Renal dopaminergic system:Pathophysiological implications and clinical perspectives显示文摘Fluid homeostasis, blood pressure and redox balance in the kidney are regulated by an intricate interaction between local and systemic anti-natriuretic and natriuretic systems. Intrarenal dopamine plays a central role on this interactive network. By activating specific receptors, dopamine promotes sodium excretion and stimulates anti-oxidant and anti-inflammatory pathways. Different pathological scenarios where renal sodium excretion is dysregulated, as in nephrotic syndrome, hypertension and renal inflammation, can be associated with impaired action of renal dopamine including alteration in biosynthesis, dopamine receptor expression and signal transduction. Given its properties on the regulation of renal blood flow and sodium excretion, exogenous dopamine has been postulated as a potential therapeutic strategy to prevent renal failure in critically ill patients. The aim of this review is to update and discuss on the most recent findings about renal dopaminergic system and its role in several diseases involving the kidneys and the potential use of dopamine as a nephroprotective agent.Marcelo Roberto Choi Nicolás Martín Kouyoumdzian Natalia Lucía Rukavina Mikusic María Cecilia Kravetz María Inés Rosón Martín Rodríguez Fermepin Belisario Enrique Fernández 2015World Journal of Nephrology2015,4,2:2
9Dibenzothiophene hydrodesulfurization over cobalt phosphide catalysts prepared through a new syn- thetic approach: Effect of the support显示文摘Cecilia J A Infantes-Molina A Rodriguez-Castell6n E 2009Applied Ca- talysisB: Environmental2009,92,:1
10Nucleotide Change Responseible for Looss of Neufinvasiveness in Japanese Encephalitis Virus Neutralization Resistant Muatants显示文摘Cecilia D Gould E A 1991Virology1991,181,:1
11Alberto MT1R8/SIGIRR:an IL-IR/TLR family member with regulatory functions in inflammation and T cell polarization显示文摘Cecilia G Hans-Joachim A 0,,09:1
12The Role of human papilloma virus in the molecular biology of cervical care inogenesis显示文摘Satoru M Cecilia A Ladine L 2004Kobe J Med Sce2004,50,1:1
13A new and efficient procedure for preparing 1,2,3-triazoles 显示文摘Romeiro G A Cecilia M de Souza B V 1997Tet- rahedron Letters1997,38,29:1
14Trochanteric fractures treated with proximal femoral nail显示文摘Domingo LJ Cecilia D Herrera A 2001Int Orthop2001,25,5:1
15A longitudinal study of neutralizing antibodies and disease progression in HIV-1-infected subjects显示文摘Cecilia D Kleeberger C Munoz A 1999J Infect Dis1999,179,6:1
16Trochanteric fractures treated with a proximal femoral nail显示文摘Domingo LJ Cecilia D Herrera A 2001Int Orthop2001,25,5:1
17Calcium salts and heat treatment for quality retention of fresh-cut 'Galia' melon显示文摘CECILIA S A AGUAYO E CHISARI M Postharvest Biolog: and Technology 20! 10,62,:1
18Use of microencapsulated PCM in buildings and the effect of adding awnings显示文摘Pablo A Cecilia C Albert C 2012Energy and Buildings2012,44,7:1
19Enhancing data parallelism for ant colony optimization on gpus显示文摘Cecilia J M Garcia J M Nisbet A 2013J of Parallel and Distributed Computing2013,73,1:1
20A DNA methylation signature associated with aberrant promoter DNA hypermethylation of DNMT3B in human colorectal cancer显示文摘Covadonga Huidobro Rocío G. Urdinguio Ramón María Rodríguez Cristina Mangas Vincenzo Calvanese Pablo Martínez-Camblor Cecilia Ferrero Adolfo Parra-Blanco Luis Rodrigo álvaro J. Obaya Laura Suárez-Fernández Aurora Astudillo Henar Hernando Esteban Ballestar 2011European Journal of Cancer2011,,14:1
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