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817篇 您的检索式:作者名="ACEVEDO"
    题名 作者 年代 出处 被引量
1离子通道、磷酸化和哺乳动物精子获能显示文摘有性生殖动物需要精子和卵子之间进行精心协调的交流才能产生新的个体。精子获能是发生在女性生殖系统中的生殖细胞成熟的一个复杂现象,让精子能够和卵子联结并融合,是哺乳动物生育的必要条件。精子获能过程包括了质膜重组、离子渗透调节、胆固醇减少和许多蛋白质磷酸化状态的变化。研究精子离子通道的新工具能用更好的时空解析度将细胞内的离子变化和蛋白图像化,这些工具正在一步步阐明离子运输和磷酸化状态中的一系列调节是如何引起获能的。最近的证据表明有两条平行的通路调节引起获能的磷酸化发生。其中一条通路要求蛋白激酶A活化,另一条通路需要丝氨酸/苏氨酸磷酸酶失活。本文综述了精子获能所要求的离子运输参与和磷酸化信号处理。理解导致生育的分子机制,对于人们应对男性不育率升高、开发安全的以雄性配子为基础的避孕药、通过辅助生殖策略保持生物多样性都至关重要。Pablo E Visconti Dario Krapf Jose Luis de la Vega-Beltran Juan Jose Acevedo Alberto Darszon 2011Asian Journal of Andrology2011,13,3:19
2Osteocyte dysfunction promotes osteoarthritis through MMP13-dependent suppression of subchondral bone homeostasis显示文摘Osteoarthritis(OA),long considered a primary disorder of articular cartilage,is commonly associated with subchondral bone sclerosis.However,the cellular mechanisms responsible for changes to subchondral bone in OA,and the extent to which these changes are drivers of or a secondary reaction to cartilage degeneration,remain unclear.In knee joints from human patients with end-stage OA,we found evidence of profound defects in osteocyte function.Suppression of osteocyte perilacunar/canalicular remodeling(PLR)was most severe in the medial compartment of OA subchondral bone,with lower protease expression,diminished canalicular networks,and disorganized and hypermineralized extracellular matrix.As a step toward evaluating the causality of PLR suppression in OA,we ablated the PLR enzyme MMP13 in osteocytes while leaving chondrocytic MMP13 intact,using Cre recombinase driven by the 9.6-kb DMP1 promoter.Not only did osteocytic MMP13 deficiency suppress PLR in cortical and subchondral bone,but it also compromised cartilage.Even in the absence of injury,osteocytic MMP13 deficiency was sufficient to reduce cartilage proteoglycan content,change chondrocyte production of collagen II,aggrecan,and MMP13,and increase the incidence of cartilage lesions,consistent with early OA.Thus,in humans and mice,defects in PLR coincide with cartilage defects.Osteocyte-derived MMP13 emerges as a critical regulator of cartilage homeostasis,likely via its effects on PLR.Together,these findings implicate osteocytes in bone-cartilage crosstalk in the joint and suggest a causal role for suppressed perilacunar/canalicular remodeling in osteoarthritis.Courtney MMazur Jonathon JWoo Cristal SYee Aaron JFields Claire Acevedo Karsyn NBailey Serra Kaya Tristan WFowler Jeffrey CLotz Alexis Dang Alfred CKuo Thomas PVail Tamara Alliston 2019Bone Research2019,7,4:10
3Multiresistant bacterial infections in liver cirrhosis: Clinical impact and new empirical antibiotic treatment policies显示文摘Recently, important changes have been reported regarding the epidemiology of bacterial infections in liver cirrhosis. There is an emergence of multiresistant bacteria in many European countries and also worldwide, including the United States and South Korea. The classic empirical antibiotic treatment(third-generation cephalosporins, e.g., ceftriaxone, cefotaxime or amoxicillin-clavulanic acid) is still effective in infections acquired in the community, but its failure rate in hospital acquired infections and in some health-care associated infections is high enough to ban its use in these settings. The current editorial focuses on the different epidemiology of bacterial infections in cirrhosis across countries and on its therapeutic implications.Juan Acevedo 2015World Journal of Hepatology2015,7,7:8
4基于多代理模型的城市土地利用博弈模拟显示文摘以美国达拉斯北部地区为例,通过建立基于多代理的人类系统和自然系统的耦合互动模型,研究不同土地管理策略的有效性。自然系统包含土地覆盖变化、流域水文动力学和野生动物栖息地生态系统。人类系统包括土地利益相关者(地主、屋主、开发商、政府)的影响土地利用变化价值观。系统强调自然对土地利用决策的反馈机制,不同类型代理相对空间位置的重要作用,以及同一类别中不同类型代理在特定情形下的相互转化。研究进行了两类模拟,一是模拟初始化的若干情景,包括不同类型地主和户主的分布、不同类型政府以及经济模型的假定;二是模拟主动式土地政策的实施效果。模拟结果表明,当政府购置保留地时考虑土地拥有者的价值观,较之单纯基于机会或生态因素更能导致有效的增长管理策略。季民河 Michael Monticino Miguel Acevedo 2009地理研究2009,28,1:8
5Hepatorenal syndrome:Update on diagnosis and therapy显示文摘Hepatorenal syndrome(HRS) is a manifestation of extreme circulatory dysfunction and entails high morbidity and mortality.A new definition has been recently recommended by the International Club of Ascites,according to which HRS diagnosis relies in serum creatinine changes instead that on a fixed high value.Moreover,new data on urinary biomarkers has been recently published.In this sense,the use of urinary neutrophil gelatinase-associated lipocalin seems useful to identify patients with acute tubular necrosis and should be employed in the diagnostic algorithm.Treatment with terlipressin and albumin is the current standard of care.Recent data show that terlipressin in intravenous continuous infusion is better tolerated than intravenous boluses and has the same efficacy.Terlipressin is effective in reversing HRS in only 40%-50% of patients.Serum bilirubin and creatinine levels along with the increase in blood pressure and the presence of systemic inflammatory response syndrome have been identified as predictors of response.Clearly,there is a need for further research in novel treatments.Other treatments have been assessed such as noradrenaline,dopamine,transjugular intrahepatic portosystemic shunt,renal and liver replacement therapy,etc.Among all of them,liver transplant is the only curative option and should be considered in all patients.HRS can be prevented with volume expansion with albumin during spontaneous bacterial peritonitis and after post large volume paracentesis,and with antibiotic prophylaxis in patients with advanced cirrhosis and low proteins in the ascitic fluid.This manuscript reviews the recent advances in the diagnosis and management of this life-threatening condition.Juan G Acevedo Matthew E Cramp 2017World Journal of Hepatology2017,9,6:8
6Joint effect among p53, CYP1A1, GSTM1 polymorphism combinations and smoking on prostate cancer risk: an exploratory genotype-environment interaction study显示文摘瞄准:与前列腺癌症的调节的人冒的风险的一个环境因素在联合估计几个基因因素的角色。我们集中于与房间控制联系的低外显率的基因的等位基因变体, detoxification 进程并且吸烟。方法:在盒子控制研究,我们比较了与他们的前列腺癌症风险带 p53cd72 职业人员等位基因, CYP1A1 M1 等位基因和 GSTM1 空遗传型的人。结果:为带专业版的吸烟者的联合风险 * 并且 M1 * ,专业版 * 并且 GSTM1null 或 GSTM1 0 和 CYP1A1 M1 * 变体显著地更高(机会比率[或] :13.13, 95% 信心间隔[CI ] :2.41-71.36;或:3.97, 95% CI:1.13-13.95 并且或:6.87, 95% CI:1.68-27.97,分别地) 不为参考组,并且为不抽烟的人与那相比是重要的。或为在 p53cd72, GSTM1 和 CYP1A1 之中的联合,在吸烟者的 M1 断然并且显著地与不抽烟的人相比并且与通常认为的最低风险组相比与前列腺癌症风险被联系(或:8.87, 95% CI:1.25-62.71 ) 。结论:我们的结果建议那在修改前列腺癌症的一个重要角色在学习人口上冒的风险的 p53cd72, CYP1A1, GSTM1 等位基因和吸烟的戏的联合,哪个带易受影响的遗传型的吸烟者可能有的工具显著地更高的风险比带非易受影响的遗传型的那些。Luis A. Quinones Carlos E. Irarrázabal Claudio R. Rojas Cristian E. Orellana Cristian Acevedo Christian Huidobro Nelson E. Varela Dante D. Cáiceres 2006Asian Journal of Andrology2006,8,3:6
7Micro- and nanoporous materials capable of absorbing solvents and oils reversibly: the state of the art显示文摘Treatment of petroleum spills and organic solvent pollution in general is an important issue; several techniques are under development to remove oil from water. The use of absorbents is one of the most common techniques to tackle this problem. These absorbents can be classified based on their characteristics of recyclability into irreversible and reversible ones. In this review, we discuss the application of several materials as oil absorbents,according to their classification and characteristics such as hydrophobicity, surface area and oil absorption capacity.Also, the fabrication methods for some materials are presented and analyzed.Javier S. Acevedo Cortez Boris I. Kharisov Thelma E. Serrano Quezada Tomas C. Hernandez Garcia 2017Petroleum Science2017,14,1:5
8Prevalence and risk factors of infections by multiresistant bacteria in cirrhosis: A prospective study显示文摘Javier Fernández Juan Acevedo Miriam Castro Orlando Garcia Carlos Rodríguez de Lope Daria Roca Marco Pavesi Elsa Sola Leticia Moreira Anibal Silva Tiago Seva‐Pereira Francesco Corradi Jose Mensa Pere Ginès Vicente Arroyo 2012Hepatology2012,,:4
9Update on management of gastric varices显示文摘Gastric varices(GV) have different physiology and clinical characteristics compared to oesophageal varices(OV). There is little information about the management of GV. Most part of the recommendations is extrapolated from studies where the majority of participants had OV. Thus, most recommendations lack of strong evidence. This is a comprehensive review on all aspects of management of GV, i.e., primary, secondary prophylaxis and management of acute bleeding. The papers on which international societies' recommendations are based are scrutinised in this review and areas of research are identified.Louisa J Vine Mohsan Subhani Juan G Acevedo 2019World Journal of Hepatology2019,11,3:3
10Specific and cross-reactive immune response against Mycobacterium tuberculosis antigens in mice immunized with proteoliposomes from Mycobacterium bovis BCG显示文摘Objective: To characterize the immunogenicity and the induction of cross-reactive responses against Mycobacterium tuberculosis(M. tuberculosis) of a proteoliposome(PL)from Mycobacterium bovis Bacillus Calmette–Guerin(BCG) with and without alum hydroxide(AL) as adjuvant(PLBCG-AL and PLBCG, respectively) in BALB/c mice.Methods: BALB/c mice were inoculated with phosphate buffer solution, BCG, PLBCG and PLBCG-AL. The humoral immunogenicity was determined by ELISA [immunoglobulin G(Ig G), Ig G1 and Ig G2a] and the cellular immunogenicity was evaluated in vivo by delayed type hypersensitivity. The humoral cross-reactive response against M. tuberculosis was determined by Western blot.Results: Sera from animals immunized with PLBCG-AL and PLBCG showed significant increase in specific total Ig G and Ig G1 antibodies and the presence of cross-reactive antibodies against M. tuberculosis antigens, which were more intense with the use of alum as adjuvant. Mice immunized with PLBCG and PLBCG-AL also showed a specific cellular response in vivo.Conclusions: The cellular and humoral immunogenicity of PLBCG and the capacity to induce cross-reactive responses against M. tuberculosis is in agreement with the protective capacity previously demonstrated by this vaccine candidate and supports the continuation of its evaluation in further stages.Nadine Alvarez DaymíSerpa Ramlah Kadir Yanely Tirado Reinier Borrero Sonsire Fernández Rubén Cabrera Yolanda Valdes Caridad Zayas Reinaldo Acevedo Luis Izquierdo María Elena Sarmiento Mohd-Nor Norazmi JoséLuis Pérez Armando Acosta 2017Asian Pacific Journal of Tropical Biomedicine2017,7,3:3
11The new epidemiology of nosocomial bacterial infections in cirrhosis: therapeutical implications显示文摘Juan Acevedo Aníbal Silva Verónica Prado Javier Fernández 2013Hepatology International2013,,1:2
12New determinants of prognosis in bacterial infections in cirrhosis显示文摘Despite major advances in the knowledge and management of liver diseases achieved in recent decades,decompensation of cirrhosis still carries a high burden of morbidity and mortality.Bacterial infections are one of the main causes of decompensation.It is very important for clinical management to be aware of the population with the highest risk of poor outcome.This review deals with the new determinants of prognosis in patients with cirrhosis and bacterial infections reported recently.Emergence of multiresistant bacteria has led to an increasing failure rate of the standard empirical antibiotic therapy recommended by international guidelines.Moreover,it has been recently reported that endothelial dysfunction is associated with the degree of liver dysfunction and,in infected patients,with the degree of sepsis.It has also been reported that relative adrenal insufficiency is frequent in the non-critically ill cirrhotic population and it is associated with a higher risk of developing infection,severe sepsis,hepatorenal syndrome and death.We advise a change in the standard empirical antibiotic therapy in patients with high risk for multiresistant infections and also to take into account endothelial and adrenal dysfunction in prognostic models in hospitalized patients with decompensated cirrhosis.Juan Acevedo Javier Fernández 2014World Journal of Gastroenterology2014,20,23:2
13THE USE OF REAL EARTHQUAKE ACCELEROGRAMS AS INPUT TO DYNAMIC ANALYSIS显示文摘Julian J. Bommer Ana Beatriz Acevedo 2004Journal of Earthquake Engineering2004,,:2
14Mild cognitive impairment:directions for future research显示文摘Luis CA Loewenstein DA Acevedo A 2003Neurology2003,61,4:1
15In vivo expression of membrane-associated human chorionfa gonadotrophin by cells isolated from cancerous human tissues显示文摘Acevedo HF Campbell-Aeevedo EA Buffo MJ 1994Proc Am Ass cancer Res1994,34,:1
16Mesenteric ischemia: rapid diagnosis and prompt treatment are essential显示文摘Anzalone J Acevedo FA 2011JAAPA2011,24,7:1
17Enzymes as useful tools for environmental purposes 显示文摘Rao M A Scelza R Acevedo F 2014Chemosphere2014,107,:1
18VEGF-Induced Vascular Permeability Is Mediated by FAK显示文摘Xiao Lei Chen Ju-Ock Nam Christine Jean Christine Lawson Colin T. Walsh Erik Goka Ssang-Taek Lim Alok Tomar Isabelle Tancioni Sean Uryu Jun-Lin Guan Lisette M. Acevedo Sara M. Weis David A. Cheresh David D. Schlaepfer 2012Developmental Cell2012,,:1
19Detection of membraneassociated human chorionic gonadotrophin and its subunits on human cultured cancer cells of the nervour system显示文摘Acevedo HF Hartsock RJ Maroom JC 1997Cancer Detect Prev1997,21,4:1
20Metastatic phenotype correlates with high expression of membrane-associated complete 3-human chorionfa gonadotrophin in vivo显示文摘Acevedo HF Hartsock RJ 1996Cancer1996,78,11:1
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