|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | An overview of animal models for investigating the pathogenesis and therapeutic strategies in acute hepatic failure显示文摘Acute hepatic failure (AHF) is a severe liver injury accompanied by hepatic encephalopathy which causes multiorgan failure with an extremely high mortality rate, even if intensive care is provided. Management of severe AHF continues to be one of the most challenging problems in clinical medicine. Liver transplantation has been shown to be the most effective therapy, but the procedure is limited by shortage of donor organs. Although a number of clinical trials testing different liver assist devices are under way, these systems alone have no significant effect on patient survival and are only regarded as a useful approach to bridge patients with AHF to liver transplantation. As a result, reproducible experimental animal models resembling the clinical conditions are still needed. The three main approaches used to create an animal model for AHF are: surgical procedures, toxic liver injury and infective procedures. Most common models are based on surgical techniques (total/partial hepatectomy, complete/transient devascularization) or the use of hepatotoxic drugs (acetaminophen, galactosamine, thioacetamide, and others), and very few satisfactory viral models are available. We have recently developed a viral model of AHF by means of the inoculation of rabbits with the virus of rabbit hemorrhagic disease. This model displays biochemical and histological characteristics, and clinical features that resemble those in human AHF. In the present article an overview is given of the most widely used animal models of AHF, and their main advantages and disadvantages are reviewed. | María Jesús Tuón Marcelino Alvarez Jesús M Culebras Javier González-Gallego | 2009 | World Journal of Gastroenterology2009，15，25： | 29 |
| 2 | Thermal Treatment of Hydrocarbon-Impacted Soils" A Review of Technology Innovation for Sustainable Remediation显示文摘在受烃污染的土壤和底泥的修复处理工艺中,热处理工艺因其能快速且稳定地达到修复标准而占有重要地位。然而,持续高温属于能源密集型操作,且可破坏土壤性质,因此尽管此工艺被广泛应用,关于这些工艺的环境兼容性和可持续性却极少被报道。鉴于此,我们对几个针对烃污染土壤的常用热处理工艺进行了概述,对它们的潜在环境影响进行了评估;并基于能源需求、水需求、系统生态和土壤科学的全面考虑,提出了可持续且影响较小的发展框架。至今还没有一种通用适合的热处理工艺。工艺的恰当选择要根据污染状况(包括环境中存在的烃种类)和场地特征(如被污染土壤的性质、水含量和热敏性)而定。总之,处理工程与土壤科学、生态系统和植物生物学研究的有机结合是攻克技术瓶颈、提高去除率和促进热处理工艺可持续性发展的关键所在。 | Julia E. Vidonish Kyriacos Zygourakis Caroline A. Masiello Gabriel Sabadell Pedro J. J. Alvarez | 2016 | Engineering2016，2，4： | 27 |
| 3 | Advances in immunotherapy for treatment of lung cancer显示文摘Different approaches for treating lung cancer have been developed over time, including chemotherapy, radiotherapy and targeted therapies against activating mutations. Lately, better understanding of the role of the immunological system in tumor control has opened multiple doors to implement different strategies to enhance immune response against cancer cells. It is known that tumor cells elude immune response by several mechanisms. The development of monoclonal antibodies against the checkpoint inhibitor programmed cell death protein 1(PD-1) and its ligand(PD-L1), on T cells, has led to high activity in cancer patients with long lasting responses. Nivolumab, an anti PD-1 inhibitor, has been recently approved for the treatment of squamous cell lung cancer patients, given the survival advantage demonstrated in a phase III trial. Pembrolizumab, another anti PD-1 antibody, has received FDA breakthrough therapy designation for treatment of non-small cell lung cancer(NSCLC), supported by data from a phase I trial. Clinical trials with anti PD-1/PD-L1 antibodies in NSCLC have demonstrated very good tolerability and activity, with response rates around 20% and a median duration of response of 18 months. | Jean G.Bustamante Alvarez María González-Cao Niki Karachaliou Mariacarmela Santarpia Santiago Viteri Cristina Teixidó Rafael Rosell | 2015 | Cancer Biology & Medicine2015，12，3： | 22 |
| 4 | 肿瘤恶性转化与C/EBPβ和STAT3基因相关(英文)显示文摘The inference of transcriptional networks that regulate transitions into physiological or pathological cellular states remains a central challenge in systems biology. A mesenchymal phenotype is the hallmark of tumour aggressiveness in human malignant glioma,but the regulatory programs responsible for implementing the associated molecular signature are largely unknown. Here we show that reverse-engineering and an unbiased interrogation of a glioma-specific regulatory network reveal the transcriptional module that activates expression of mesenchymal genes in malignant glioma. Two transcription factors (C/EBPβ and STAT3) emerge as synergistic initiators and master regulators of mesenchymal transformation. Ectopic co-expression of C/EBPβ and STAT3 reprograms neural stem cells along the aberrant mesenchymal lineage,whereas elimination of the two factors in glioma cells leads to collapse of the mesenchymal signature and reduces tumour aggressiveness. In human glioma,expression of C/EBPβ and STAT3 correlates with mesenchymal differentiation and predicts poor clinical outcome. These results show that the activation of a small regulatory module is necessary and sufficient to initiate and maintain an aberrant phenotypic state in cancer cells. | Maria Stella Carro Wei Keat Lim Mariano Javier Alvarez Robert J. Bollo Evan Y. Snyder Erik P. Sulman Sandrine L. Anne Fiona Doetsch Howard Colman Anna Lasorella Ken Aldape Andrea Califano Antonio Iavarone | 2010 | 中华神经外科疾病研究杂志2010，9，1： | 16 |
| 5 | 精子尾部和头部疼痛的传奇:影响精子头部、颈部和尾部的精子病理学预后意义的观念转变显示文摘本文对精子形态和活力问题导致的严重男性不育的各种精子病理学的最新预后意义研究进行了综述。严重的弱精症是男性不育症的主要原因之一,即精子不能到达卵母细胞和/或正常穿透。在卵胞浆内单精子注射(ICSI)之前确定精子无动力的结构因素是非常重要的,因为精子无动力是治疗这些病人的关键因素。治疗这些患者时,要用体外培养的方法挑选有活力的精子或激发精子的活力,以免使用的是坏死的精子细胞。这种改进之后,受精和妊娠结果会显著改善。治疗弱精症患者时,需要提前鉴定遗传显型,并充分告知患者治疗结果和风险。畸形精子症是严重影响生育预测的一个精子特征,主要表现为精子头部和颈部异常。染色质凝聚缺陷和顶体发育不全是两种最常见的严重畸形精子症的表现。显微选择精子和ICSI之前评估精子质量的新方法的开发和应用,确保了对精子病理学超微结构的鉴定,不仅仅只是学术兴趣,同时也是选择治疗方法的一种重要途径。本文回顾了精子各部分在正常受精和早期胚胎发育过程中所发挥的不同作用,探讨了辅助生殖技术如何转变了我们对不正常精子头部、颈部、中片和尾部的病理学的预后意义的认识。 | Hector E Chemes Cristian Alvarez Sedo | 2012 | Asian Journal of Andrology2012，14，1： | 16 |
| 6 | 非常规油气开发中润湿性反转技术的应用显示文摘研究了适用于非常规油气储集层的岩石润湿性测量方法,总结了非常规油气储集层岩石润湿性特征,分析了非常规油气储集层岩石润湿性反转技术的应用情况,并介绍了研究表面活性剂与非常规油气储集层岩石润湿性间关系的实验方法。研究表明:接触角法、核磁共振法和Zeta电位测量法是评估非常规油气储集层岩石润湿性最恰当的方法,非常规油气储集层呈现出中性润湿到油湿的混合润湿特性。润湿性反转技术在非常规油气储集层中的应用目前仅限于添加表面活性剂。在压裂液中加入表面活性剂可改变非常规油气储集层岩石润湿性从而提高原油采收率。借助稳定性实验、润湿性反转评估实验、界面张力实验、自吸实验、压吸实验和吸附实验等可评估表面活性剂改变润湿性及提高采收率的效率。 | ALVAREZ J O SCHECHTER D S | 2016 | 石油勘探与开发2016，43，5： | 15 |
| 7 | Cancer immune checkpoint blockade therapy and its associated autoimmune cardiotoxicity显示文摘有免疫力的检查点分子在进化被出现由激活的 T 房间保护主人免受自我攻击的伤害。然而,癌症房间熬过并且膨胀的策略,能劫持这些分子和机制压制 T 调停房间的有免疫力的回答。因此,堵住检查点分子提高宿主免疫系统的反肿瘤活动的一个想法被开发了并且在禁止的 T 细胞合作受体的发现以后适用于癌症治疗,细胞毒素的T淋巴细胞联系了蛋白质 4 ( CTLA-4 ),并且进一步在 PD-1 和它的 ligands 的鉴定上提高了。自从 2010,几个检查点禁止者被食物及药品管理局同意了,许多更多在临床的试用。在先进癌症的治疗,这些禁止者显著地增加了反应率和幸存好处。然而,与惹人注目的结果伴随了,广泛地发生在许多机关的免疫者相关的不利事件(irAEs ) 被观察并且报导,其中一些是致命的。此处,我们首先在癌症治疗在有免疫力的检查点分子的研究和他们的堵住的抗体的应用程序考察最近的前进,然后讨论治疗和策略导致到监视器的心脏的毒性,当它发生时,管理这个不利事件。 | Jiu-cheng Zhang Wei-dong Chen Jean Bustamante Alvarez Kelly Jia Lei Shi Qiang Wang Ning Zou Kai He Hua Zhu | 2018 | Acta Pharmacologica Sinica2018，39，11： | 14 |
| 8 | Heart failure with preserved ejection fraction in the elderly: pathophysiology, diagnostic and therapeutic approach显示文摘Heart failure with preserved ejection fraction(HFpEF)is a clinical syndrome characterized by symptoms and sings of heart failure with elevated left ventricular filling pressures at rest or during exercise.It is the most common type of heart failure in the elderly and its prevalence increases with age and is higher in females at any given age.HFpEF is frequently accompanied of comorbid conditions such as diabetes mellitus,obesity,atrial fibrillation and renal dysfunction.The diagnosis relies in the integration of clinical information,laboratory data and interpretation of cardiac imaging and hemodynamic findings at rest and during exercise.Conditions that have a specific treatment such as coronary artery disease,valvular disease,cardiac amyloidosis and constrictive pericarditis should be considered and evaluated as appropriate.Aggressive management of comorbidities,optimization of blood pressure control and volume status using diuretics as needed are among the current treatment recommendations.There are no specific therapies that have shown to decrease mortality in HFpEF.In symptomatic patients with history of hospital admission for decompensated heart failure,the implantation of a wireless pulmonary artery pressure monitor should be considered.Finally,given the high mortality of this condition,goals of care discussion should be initiated early and involvement of palliative care medicine should be considered. | Ernesto Ruiz Duque Alexandros Briasoulis Paulino A Alvarez | 2019 | Journal of Geriatric Cardiology2019，16，5： | 13 |
| 9 | Clp Protease and OR Directly Control the Proteostasis of Phytoene Synthase, the Crucial Enzyme for Carotenoid Biosynthesis in Arabidopsis显示文摘Phytoene synthase (PSY ) 是在类胡萝卜素 biosynthetic 小径的关键 plastidial 酶。然而,它的 translational 以后规定留下逃犯。同样, Clp 朊酶组成质体朊酶网络的中央部分,但是它为降级的底层不是众所周知的。在这研究,我们报导 PSY 是 Clp 朊酶的底层。PSY 被揭开身体上与各种各样的 Clp 朊酶子单元交往(即, ClpS1, ClpC1,和 ClpD ) 。在 clpc1, clpp4,和 clpr1-2 异种的 PSY 和几另外的 carotenogenic 酶蛋白质 overaccumulate 高级。overaccumulated PSY 被发现部分酶地活跃。在 clpc1 的 Clp 活动的缺陷导致 PSY 蛋白质周转的减少的率,进一步在降级的 PSY 支持 Clp 朊酶的角色蛋白质。在另一方面, ORANGE (或) 蛋白质,有 holdase 女伴活动的 PSY 的一个主要 translational 以后管理者,提高 PSY 蛋白质稳定性并且在 clpc1 增加 PSY 的酶地活跃的比例, counterbalancing 在维持 PSY 蛋白质动态平衡的调停 Clp 的解朊作用。一起,这些调查结果提供新奇卓见进质体局部性的蛋白质的质量控制并且建立迄今未辩别出的 translational 以后在在植物的 modulating 类胡萝卜素生合成的 carotenogenic 酶的规章的机制。 | Ralf Welsch Xiangjun Zhou Hui Yuan Daniel Alvarez Tianhu Sun Dennis Schlossarek Yong Yang Guoxin Shen Hong Zhang Manuel Rodriguez-Concepcion Theodore W. Thannhauser Li Li | 2018 | Molecular Plant2018，11，1： | 10 |
| 10 | Biliary tract schwannoma:A rare cause of obstructive jaundice in a young patient显示文摘Schwannoma is a tumor derived from Schwann cells which usually arises in the upper extremities, trunk, head and neck, retroperitoneum, mediastinum, pelvis, and peritoneum. However, it can arise in the gastro-intestinal tract, including biliary tract. We present a 24-year-old male patient with obstructive jaundice, whose investigation with computed tomography abdomen showed focal wall thickening in the common hepatic duct, difficult to differentiate with hilar adenocarcinoma. He was diagnosed intraoperatively schwannoma of common bile duct and treated with local resection. The patient recovered well without signs of recurrence of the lesion after 12 mo. We also reviewed the common bile duct schwannoma related in the literature and evaluated the difficulty in pre and intraoperative differential diagnosis with adenocarcinoma hilar. Resection is the treatment of choice for such cases and the tumordid not recur in any of the resected cases. | Gilton Marques Fonseca André Luis Montagnini Manoel de Souza Rocha Rosely Antunes Patzina Mário Vinícius Angelete Alvarez Bernardes Ivan Cecconello José Jukemura | 2012 | World Journal of Gastroenterology2012，18，37： | 10 |
| 11 | 纳米铁为脱氯菌供电降解三氯乙烯实验研究显示文摘采用一种从氯乙烯污染场址土壤中提取的脱氯菌种(Dehalococcoidesspp.)进行三氯乙烯(TCE)降解实验,研究纳米铁厌氧腐蚀产氢为该脱氯菌种提供电子的可能性.结果表明,在甲醇做电子供体时,稀释25倍的菌液[(2.0±0.44)×105cell/mL)]可以在96 h内将20 mg/L TCE完全降解,并在190 h时有2.706μmol乙烯产生.而在无甲醇做电子供体时,96 h内只有部分TCE转化为顺二氯乙烯(cis-DCE),且190 h时几乎无乙烯产生(0.159μmol),因此无电子供体时菌液脱氯活动不能维持.但在4 g/L纳米铁腐蚀产氢的情况下,脱氯菌可以利用纳米铁产生的阴极氢维持脱氯活动,在131 h内将20 mg/L TCE完全降解,并且其耦合的脱氯速率高于纳米铁单独降解时的速率.从乙烯的产量分析中可以看出,纳米铁供电时190 h后由脱氯菌产生的乙烯量为1.187μmol,明显低于甲醇做电子供体时乙烯的产量2.706μmol,表明纳米铁可能对微生物存在一定的毒性效应.同时反应190 h后乙炔的产量为0.109μmol,相对低于与纳米铁单独降解TCE时的产量0.161μmol,说明微生物在无电子供体的情况下,竞争利用了纳米铁与水反应产生的电子导致乙炔的生成量降低.上述结果表明,4 g/L的纳米铁与水反应生成的活性氢可以为脱氯菌提供电子,并维持其脱氯活动,这对纳米铁和脱氯菌耦合应用于地下水的有机氯修复具有重要的实际意义. | 修宗明 李铁龙 金朝晖 Pedro J. Alvarez | 2009 | 环境科学2009，30，6： | 9 |
| 12 | Parenchymal-sparing liver surgery in patients with colorectal carcinoma liver metastases显示文摘Liver resection is the treatment of choice for patients with colorectal liver metastases(CLM).However,major resections are often required to achieve R0 resection,which are associated with substantial rates of morbidity and mortality.Maximizing the amount of residual liver gained increasing significance in modern liver surgery due to the high incidence of chemotherapyassociated parenchymal injury.This fact,along with the progressive expansion of resectability criteria,has led to the development of a surgical philosophy known as 'parenchymal-sparing liver surgery'(PSLS).This philosophy includes a variety of resection strategies,either performed alone or in combination with ablative therapies.A profound knowledge of liver anatomy and expert intraoperative ultrasound skills are required to perform PSLS appropriately and safely.There is a clear trend toward PSLS in hepatobiliary centers worldwide as current evidence indicates that tumor biology is the most important predictor of intrahepatic recurrence and survival,rather than the extent of a negative resection margin.Tumor removal avoiding the unnecessary sacrifice of functional parenchyma has been associated with less surgical stress,fewer postoperative complications,uncompromised cancer-related outcomes and higher feasibility of future resections.The increasing evidence supporting PSLS prompts its consideration as the gold-standard surgical approach for CLM. | Fernando A Alvarez Rodrigo Sanchez Claria Sebastian Oggero Eduardo de Santibanes | 2016 | World Journal of Gastrointestinal Surgery2016，8，6： | 8 |
| 13 | Characterization of the osteogenic potential of mesenchymal stem cells from human periodontal ligament based on cell surface markers显示文摘Mesenchymal stem cell(MSC)-mediated therapy has been shown to be clinically effective in regenerating tissue defects. For improved regenerative therapy, it is critical to isolate homogenous populations of MSCs with high capacity to differentiate into appropriate tissues. The utilization of stem cell surface antigens provides a means to identify MSCs from various tissues. However, few surface markers that consistently isolate highly regenerative MSCs have been validated, making it challenging for routine clinical applications and making it all the more imperative to identify reliable surface markers. In this study, we used three surface marker combinations:CD51/CD140 a, CD271, and STRO-1/CD146 for the isolation of homogenous populations of dental mesenchymal stem cells(DMSCs)from heterogeneous periodontal ligament cells(PDLCs). Fluorescence-activated cell sorting analysis revealed that 24% of PDLCs were CD51^+/CD140a^+, 0.8% were CD271^+, and 2.4% were STRO-1^+/CD146^+. Sorted cell populations were further assessed for their multipotent properties by inducing osteogenic and chondrogenic differentiation. All three subsets of isolated DMSCs exhibited differentiation capacity into osteogenic and chondrogenic lineages but with varying degrees. CD271^+ DMSCs demonstrated the greatest osteogenic potential with strong induction of osteogenic markers such as DLX5, RUNX2, and BGLAP. Our study provides evidence that surface marker combinations used in this study are sufficient markers for the isolation of DMSCs from PDLCs. These results provide important insight into using specific surface markers for identifying homogenous populations of DMSCs for their improved utilization in regenerative medicine. | Ruth Alvarez Hye-Lim Lee Cun-Yu Wang Christine Hong | 2015 | International Journal of Oral Science2015，7，4： | 8 |
| 14 | Noncoding RNAs in cancer and cancer stem cells显示文摘In recent years, it has become increasingly apparent that noncoding RNAs(ncRNA) are of crucial importance for human cancer. The functional relevance of ncRNAs is particularly evident for microRNAs(miRNAs) and long noncoding RNAs(lncRNAs). miRNAs are endogenously expressed small RNA sequences that act as post-transcriptional regulators of gene expression and have been extensively studied for their roles in cancers, whereas lncRNAs are emerging as important players in the cancer paradigm in recent years. These noncoding genes are often aberrantly expressed in a variety of human cancers. However, the biological functions of most ncRNAs remain largely unknown. Recently, evidence has begun to accumulate describing how ncRNAs are dysregulated in cancer and cancer stem cells, a subset of cancer cells harboring self-renewal and differentiation capacities. These studies provide insight into the functional roles that ncRNAs play in tumor initiation, progression, and resistance to therapies, and they suggest ncRNAs as attractive therapeutic targets and potentially useful diagnostic tools. | Tianzhi Huang Angel Alvarez Bo Hu Shi-Yuan Cheng | 2013 | Chinese Journal of Cancer2013，32，11： | 8 |
| 15 | Influence of genes,sex,age and environment on the onset of autoimmune hepatitis显示文摘The pathogenesis of autoimmune hepatitis (AIH) is complex. However,it is believed that a susceptible individual,owing to his genetic background,sex and age,can develop the disease following exposure to an environmental trigger. Autoimmune hepatitis does not follow a Mendelian pattern of inheritance; hence no single causative genetic locus has been identified. However,several genes,inside and outside the HLA locus,have been linked to an increased susceptibility to AIH. Epidemiological evidence also suggests that the sex and age of the patient plays a role in AIH pathogenesis as the disease onset occurs mainly in the two first decades of life and a higher disease incidence is observed in females. No environmental trigger has been identified,but several have been proposed,mainly viruses and xenobiotics. This article aims at reviewing the current knowledge on susceptibility factors leading to AIH and putative triggers,emphasizing fundamental mechanisms responsible for the break of liver immunological tolerance. | Kathie Béland Pascal Lapierre Fernando Alvarez | 2009 | World Journal of Gastroenterology2009，15，9： | 8 |
| 16 | Endoscopic Tri-Modal Imaging Is More Effective Than Standard Endoscopy in Identifying Early-Stage Neoplasia in Barrett’s Esophagus显示文摘 | Wouter L. Curvers Lorenza Alvarez Herrero Michael B. Wallace Louis–Michel Wong Kee Song Krish Ragunath Herbert C. Wolfsen Ganapathy A. Prasad Kenneth K. Wang Venkataraman Subramanian Bas L.A.M. Weusten Fiebo J. Ten Kate Jacques J.G.H.M. Bergman | 2010 | Gastroenterology2010，，4： | 6 |
| 17 | Comparative analysis of Solanum stoloniferum responses to probing by the green peach aphid Myzus persicae and the potato aphid Macrosiphum euphorbiae显示文摘抽象植物由种类特定的防卫机制保护自己免于蚜虫攻击。以前,我们证明了茄属 stoloniferum Schlechtd 有抵抗因素到 Myzus persicae Sulzer (Homoptera:Aphididae ) 在 epidermal/mesophyll 水平,那不对 Macrosiphum euphorbiae 托马斯是有效的(Homoptera:Aphididae ) 。这里,我们比较 nymph 的死亡, pre 繁殖的发展时间,和 M 的探查的行为。persicae 和 M。S 上的 euphorbiae。stoloniferum 和茄属 tuberosum L。而且,我们在 S 在基因表示分析变化。stoloniferum 96 个小时由也张贴群袭蚜虫种类。尽管 M。探查蚜虫遇到更多的探查的行为表演的 euphorbiae 在韧皮部 activitieslonger 在 S 上探查和分泌唾液时间上抑制。stoloniferum 比在 S 上。tuberosum,蚜虫成功了在两植物上到达韧皮部树液的持续摄取。由 M 探查。S 上的 persicae。stoloniferum 植物导致了仅仅的有限的喂。M 的幸存。euphorbiae 和 M。persicae 在年轻叶子,然而并非在 S 的衰老的叶子被影响。stoloniferum。由 M 的群袭。euphorbiae 比 M 改变了更多的基因的表示。persicae 做了。在全身的水平,两个蚜虫得到了弱回答。S 的群袭。有很多 M 的 stoloniferum 植物。persicae 在叶子导致了词法变化,导致被破坏脉管的实质引起并且包围织物的色点的发展。相反,由 M 的群袭。euphorbiae 没有词法效果。两个都,植物种类能为 M 被认为是好主人。euphorbiae,而仅仅 S。tuberosum 是为 M 的一位好主人。persicae 和 S。stoloniferum 不是。S 的群袭。由 M 的 stoloniferum。persicae 或 M。euphorbiae 象一套普通基因一样改变了为每蚜虫特定的一套植物基因的表示。 | Adriana E. Alvarez Viviana G. Broglia Anahi M. Alberti D'Amato Doret Wouters Edwin van der Vossen Elisa Garzo W. Fred Tjallingii Marcel Dicke Ben Vosman | 2013 | Insect Science2013，20，2： | 5 |
| 18 | MGMT and MLH1 methylation in Helicobacter pylori-infected children and adults显示文摘AIM:To evaluate the association between Helicobacter pylori(H.pylori) infection and MLH1 and MGMT methylation and its relationship with microsatellite instability(MSI).METHODS:The methylation status of the MLH1 and MGMT promoter region was analysed by methylation specific methylation-polymerase chain reaction(MSPPCR) in gastric biopsy samples from uninfected or H.pylori-infected children(n = 50),from adults with chronic gastritis(n = 97) and from adults with gastric cancer(n = 92).MLH1 and MGMT mRNA expression were measured by real-time PCR and normalised to a constitutive gene(β actin).MSI analysis was performed by screening MSI markers at 4 loci(Bat-25,Bat-26,D17S250 and D2S123) with PCR;PCR products were analysed by single strand conformation polymorphism followed by silver staining.Statistical analyses were performed with either the χ 2 test with Yates continuity correction or Fisher's exact test,and statistical significance for expression analysis was assessed using an unpaired Student's t-test.RESULTS:Methylation was not detected in the promoter regions of MLH1 and MGMT in gastric biopsy samples from children,regardless of H.pylori infection status.The MGMT promoter was methylated in 51% of chronic gastritis adult patients and was associated with H.pylori infection(P < 0.05);this region was methylated in 66% of gastric cancer patients,and the difference in the percentage of methylated samples between these patients and those from H.pylori-infected chronic gastritis patients was statistically significant(P < 0.05).MLH1 methylation frequencies among H.pylori-infected and non-infected chronic gastritis adult patients were 13% and 7%,respectively.We observed methylation of the MLH1 promoter(39%) and increased MSI levels(68%) in samples from gastric cancer patients in comparison to samples from H.pylori-infected adult chronic gastritis patients(P < 0.001 and P < 0.01,respectively).The frequency of promoter methylation for both genes was higher in gastric cancer samples than in H.pylori-positive chronic gastritis samples(P < 0.05).The levels of MLH1 and MGMT mRNA were significantly reduced in chronic gastritis samples that were also hypermethylated(P < 0.01).CONCLUSION:In summary,MGMT and MLH1 methylation did not occur in earlier-stage H.pylori infections and thus might depend on the duration of infection. | Marisa C Alvarez Juliana C Santos Nathália Maniezzo Marcelo S Ladeira Artur LC da Silva Isabel CA Scaletsky José Pedrazzoli Jr Marcelo L Ribeiro | 2013 | World Journal of Gastroenterology2013，19，20： | 5 |
| 19 | AMP-activated kinase in human spermatozoa: identification, intracellular localization, and key function in the reRulation of sperm motility显示文摘 | Violeta Calle-Guisado Ana Hurtado de Llera David Martin-Hidalgo Jose Mijares Maria C Gil Ignacio S Alvarez Maria J Bragado Luis J Garcia-Marin | 2017 | Asian Journal of Andrology2017，19，6： | 5 |
| 20 | Unraveling the Biochemical and Molecular Networks Involved in Maize Cell Habituation to the Cellulose Biosynthesis Inhibitor Dichlobenil显示文摘面对纤维素生合成禁止者 dichlobenil (DCB ) 涉及玉米细胞的使习惯到生长的生物化学、分子的过程被调查。DCB 在活跃、静止的生长阶段两个都影响纤维素的合成并且改变几 CesA 基因的表示。这些, ZmCesA5 和 ZmCesA7 似乎在使熟习起一个主要作用房间到生长面对 DCB。作为在纤维素的减小的后果,涉及 hydroxycinnamates 的合成的几基因的表示被增加,导致有 ferulic 和 p-coumaric 酸的高水平的房间墙。proteomic 分析表明到 DCB 的使习惯在几条新陈代谢的小径被连接到修正。最后,使熟习房间在除去的谷胱甘肽 S-transferase 介绍减小活动和抗氧化剂活动。到纤维素生合成要求的如此的关键进程的骚乱的植物房间改编在几个新陈代谢的网络变化,以便修改房间墙建筑学和新陈代谢,并且面对禁止者幸存。一些这些修正在这份报纸被描述。 | Hugo Melida Antonio Encina Jesus Alvarez Jose Luis Acebes David Caparros-Ruiz | 2010 | Molecular Plant2010，3，5： | 5 |
您所在的机构暂未开通此部分的功能，请联系管理员