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| 1 | Expression of matrix metalloproteinases 2 and 9 in human gastric cancer and superficial gastritis显示文摘AIM:To assess expression of matrix metalloproteinases 2(MMP2)and MMP9 in gastric cancer,superficial gastritis and normal mucosa,and to measure metalloproteinase activity.METHODS:MMP2 and MMP9 mRNA expression was determined by quantitative real-time polymerase chain reaction.Normalization was carried out using three different factors.Proteins were analyzed by quantitative gelatin zymography(qGZ).RESULTS:18S ribosomal RNA(18SRNA)was very highly expressed,while hypoxanthine ribosyltransferase-1(HPRT-1)was moderately expressed.MMP2 was highly expressed,while MMP9 was not detected or lowly expressed in normal tissues,moderately or highly expressed in gastritis and highly expressed in cancer.Relative expression of 18SRNA and HPRT-1 showed no significant differences.Significant differences in MMP2 and MMP9 were found between cancer and normal tissue,but not between gastritis and normal tissue.Absolute quantification of MMP9 echoed this pattern,but differential expression of MMP2 proved conflictive.Analysis by qGZ indicated significant differences between cancer and normal tissue in MMP-2,total MMP-9,250 and 110 kDa bands.CONCLUSION:MMP9 expression is enhanced in gastric cancer compared to normal mucosa;interpretation of differential expression of MMP2 is difficult to establish. | Clara Luz Sampieri Sol de la Pea Mariana Ochoa-Lara Roberto Zenteno-Cuevas Kenneth León-Córdoba | 2010 | World Journal of Gastroenterology2010，16，12： | 46 |
| 2 | Parallel Driving in CPSS:A Unified Approach for Transport Automation and Vehicle Intelligence显示文摘The emerging development of connected and automated vehicles imposes a significant challenge on current vehicle control and transportation systems. This paper proposes a novel unified approach, Parallel Driving, a cloud-based cyberphysical-social systems(CPSS) framework aiming at synergizing connected automated driving. This study first introduces the CPSS and ACP-based intelligent machine systems. Then the parallel driving is proposed in the cyber-physical-social space,considering interactions among vehicles, human drivers, and information. Within the framework, parallel testing, parallel learning and parallel reinforcement learning are developed and concisely reviewed. Development on intelligent horizon(iHorizon)and its applications are also presented towards parallel horizon.The proposed parallel driving offers an ample solution for achieving a smooth, safe and efficient cooperation among connected automated vehicles with different levels of automation in future road transportation systems. | Fei-Yue Wang Nan-Ning Zheng Dongpu Cao Clara Marina Martinez Li Li Teng Liu | 2017 | IEEE/CAA Journal of Automatica Sinica2017，4，4： | 41 |
| 3 | Intestinal microbiota in health and disease: Role of bifidobacteria in gut homeostasis显示文摘The pool of microbes inhabiting our body is known as 'microbiota' and their collective genomes as 'microbiome'. The colon is the most densely populated organ in the human body, although other parts, such as the skin, vaginal mucosa, or respiratory tract, also harbour specific microbiota. This microbial community regulates some important metabolic and physiological functions of the host, and drives the maturation of the immune system in early life, contributing to its homeostasis during life. Alterations of the intestinal microbiota can occur by changes in composition(dysbiosis), function, or microbiota-host interactions and they can be directly correlated with several diseases. The only disease in which a clear causal role of a dysbiotic microbiota has been demonstrated is the case of Clostridium difficile infections. Nonetheless, alterations in composition and function of the microbiota have been associated with several gastrointestinal diseases(inflammatory bowel disease, colorectal cancer, or irritable bowel syndrome), as well as extra-intestinal pathologies, such as those affecting the liver, or the respiratory tract(e.g., allergy, bronchial asthma, and cystic fibrosis), among others. Species of Bifidobacterium genus are the normal inhabitants of a healthy human gut and alterations in number and composition of their populations is one of the most frequent features present in these diseases. The use of probiotics, including bifidobacteria strains, in preventive medicine to maintain a healthy intestinal function is well documented. Probiotics are also proposed as therapeutic agents for gastrointestinal disorders and other pathologies. The World Gastroenterology Organization recently published potential clinical applications for several probiotic formulations, in which species of lactobacilli are predominant. This review is focused on probiotic preparations containing Bifidobacterium strains, alone or in combination with other bacteria, which have been tested in human clinical studies. In spite of extensive literature on and research into this topic, the degree of scientific evidence of the effectiveness of probiotics is still insufficient in most cases. More effort need to be made to design and conduct accurate human studies demonstrating the efficacy of probiotics in the prevention, alleviation, or treatment of different pathologies. | Rafael Tojo Adolfo Suárez Marta G Clemente Clara G de los Reyes-Gavilán Abelardo Margolles Miguel Gueimonde Patricia Ruas-Madiedo | 2014 | World Journal of Gastroenterology2014，20，41： | 33 |
| 4 | Non-invasive assessment of liver fibrosis in chronic hepatitis B显示文摘The goal of this review is to provide a comprehensive picture of the role,clinical applications and future perspectives of the most widely used non-invasive techniques for the evaluation of hepatitis B virus(HBV)infection.During the past decade many non-invasive methods have been developed to reduce the need for liver biopsy in staging fibrosis and to overcome whenever possible its limitations,mainly:invasiveness,costs,low reproducibility,poor acceptance by patients.Elastographic techniques conceived to assess liver stiffness,in particular transient elastography,and the most commonly used biological markers will be assessed against their respective role and limitations in staging hepatic fibrosis.Recent evidence highlights that both liver stiffness and some bio-chemical markers correlatewith survival and major clinical end-points such as liver decompensation,development of hepatocellular carcinoma and portal hypertension.Thus the non-invasive techniques here discussed can play a major role in the management of patients with chronic HBV-related hepatitis.Given their prognostic value,transient elastography and some bio-chemical markers can be used to better categorize patients with advanced fibrosis and cirrhosis and assign them to different classes of risk for clinically relevant outcomes.Very recent data indicates that the combined measurements of liver and spleen stiffness enable the reliable prediction of portal hypertension and esophageal varices development. | Federica Branchi Clara Benedetta Conti Alessandra Baccarin Pietro Lampertico Dario Conte Mirella Fraquelli | 2014 | World Journal of Gastroenterology2014，20，40： | 20 |
| 5 | Intraductal papillary neoplasm of the bile ducts: A case report and literature review显示文摘Intraductal papillary neoplasm of the bile duct(IPNB) is a rare bile duct neoplasm mostly found in far eastern nations where hepatolithiasis and clonorchiasis infections are endemic. In western countries,it is very rare and the etiology is unknown. In this article,we report the first IPNB patient we encountered in our clinic and a literature review. The patient is a 38-yearold female with a history of choledocholithiasis who presented with obstructive jaundice. She was found to have a papillary mass at the junction of the right hepatic duct and common hepatic duct with six masses in the liver parenchyma. The immunophenotypic and histologic features of the tumor are consistent with IPNB,gastric subtype. The patient had a partial hepatectomy and has been receiving palliative chemotherapy. In a search of Pub Med database,we collected 354 IPNB patients reported in 22 articles. In these patients,52.8% were from Japan and 27.7% were from western countries including the United States(11.0%). The age of the patients ranged from 35 to 80 years old with an average of 64.6. Male/female ratio was 1.5. Macroscopically,57.5% of the tumors were in the left lobe and 29.5% were in the right lobe. The average size of the tumor were 4.2 cm at the time of diagnosis. Histologically,pancreato-biliary subtype accounted for 41.8%,intestinal 28.0%,gastric 13.5% and oncocytic 16%. An invasive component is most often present in the pancreato-biliary and gastric subtypes. Despite recent advanced technologies,diagnosis of IPNB is still challenging,especially in western countries due to its rarity. Defined clinicopathologic features are in demand for the accurate diagnosis and proper treatment. | Yaohong Tan Clara Milikowski Yanelba Toribio Adam Singer Claudia P Rojas Monica T Garcia-Buitrago | 2015 | World Journal of Gastroenterology2015，21，43： | 19 |
| 6 | Endoscopic ultrasound-guided treatments: Are we getting evidence based- a systematic review显示文摘The continued need to develop less invasive alternatives to surgical and radiologic interventions has driven the development of endoscopic ultrasound(EUS)-guided treatments.These include EUS-guided drainage of pancreatic fluid collections,EUS-guided necrosectomy,EUS-guided cholangiography and biliary drainage,EUSguided pancreatography and pancreatic duct drainage,EUS-guided gallbladder drainage,EUS-guided drainage of abdominal and pelvic fluid collections,EUS-guided celiac plexus block and celiac plexus neurolysis,EUSguided pancreatic cyst ablation,EUS-guided vascular interventions,EUS-guided delivery of antitumoral agents and EUS-guided fiducial placement and brachytherapy.However these procedures are technically challenging and require expertise in both EUS and interventional endoscopy,such as endoscopic retrograde cholangiopancreatography and gastrointestinal stenting.We undertook a systematic review to record the entire body of literature accumulated over the past 2decades on EUS-guided interventions with the objective of performing a critical appraisal of published articles,based on the classification of studies according to levels of evidence,in order to assess the scientific progress made in this field. | Carlo Fabbri Carmelo Luigiano Andrea Lisotti Vincenzo Cennamo Clara Virgilio Giancarlo Caletti Pietro Fusaroli | 2014 | World Journal of Gastroenterology2014，20，26： | 18 |
| 7 | The impact of iodinated X-ray contrast agents on formation and toxicity of disinfection by-products in drinking water显示文摘The presence of iodinated X-ray contrast media(ICM) in source waters is of high concern to public health because of their potential to generate highly toxic disinfection by-products(DBPs). The objective of this study was to determine the impact of ICM in source waters and the type of disinfectant on the overall toxicity of DBP mixtures and to determine which ICM and reaction conditions give rise to toxic by-products. Source waters collected from Akron,OH were treated with five different ICMs, including iopamidol, iopromide, iohexol,diatrizoate and iomeprol, with or without chlorine or chloramine disinfection. The reaction product mixtures were concentrated with XAD resins and the mammalian cell cytotoxicity and genotoxicity of the reaction mixture concentrates was measured. Water containing iopamidol generated an enhanced level of mammalian cell cytotoxicity and genotoxicity after disinfection. While chlorine disinfection with iopamidol resulted in the highest cytotoxicity overall, the relative iopamidol-mediated increase in toxicity was greater when chloramine was used as the disinfectant compared with chlorine. Four other ICMs(iopromide, iohexol, diatrizoate, and iomeprol) expressed some cytotoxicity over the control without any disinfection, and induced higher cytotoxicity when chlorinated. Only iohexol enhanced genotoxicity compared to the chlorinated source water. | Clara H.Jeong Edward J.Machek Morteza Shakeri Stephen E.Duirk Thomas A.Ternes Susan D.Richardson Elizabeth D.Wagner Michael J.Plewa | 2017 | Journal of Environmental Sciences2017，29，8： | 11 |
| 8 | Relationship of MTHFR gene polymorphisms with renal and cardiac disease显示文摘AIM: To investigate the effects of different methylenetetrahydrofolate reductase(MTHFR) 677C>T gene polymorphism and hyperhomocysteinemia for the development of renal failure and cardiovascular events, which are controversial.METHODS: We challenged the relationship, if any, of MTHFR 677C>T and MTHFR 1298A>C polymorphisms with renal and heart function. The present article is a reappraisal of these concepts, investigating within a larger population, and including a subgroup of dialysis patients, if the two most common MTHFR polymorphisms, C677 T and A1298 C, as homozygous, heterozygous or with a compound heterozygous state, show different association with chronic renal failure requiring hemodialysis. MTHFR polymorphism could be a favorable evolutionary factor, i.e., a protective factor for many ominous conditions, like cancer and renal failure. A similar finding was reported in fatty liver disease in which it is suggested that MTHFR polymorphisms could have maintained and maintain their persistence by an heterozygosis advantage mechanism. We studied a total of 630 Italian Caucasian subject aged 54.60 ± 16.35 years, addressing to the increased hazard of hemodialysis, if any, according to the studied MTHFR genetic polymorphisms. RESULTS: A favorable association with normal renal function of MTHFR polymorphisms, and notably of MTHFR C677 T is present independently of the negative effects of left ventricular hypertrophy, increased IntraRenal arterial Resistance and hyperparathyroidism. CONCLUSION: MTHFR gene polymorphisms could have a protective role on renal function as suggested by their lower frequency among our dialysis patients in end-stage renal failure; differently, the association with left ventricular hypertrophy and reduced left ventricular relaxation suggest some type of indirect, or concurrent mechanism. | Francesca M Trovato Daniela Catalano Angela Ragusa G Fabio Martines Clara Pirri Maria Antonietta Buccheri Concetta Di Nora Guglielmo M Trovato | 2015 | World Journal of Nephrology2015，4，1： | 10 |
| 9 | Nature:研究鉴定出蛋白Nlrp9b抵抗轮状病毒感染机制显示文摘轮状病毒(rotavirus)是婴儿和儿童罹患肠胃炎和腹泻的一种最为常见的原因,每年导致全世界大约21.5万人死亡。它是高度传染性的和潜在致命性的。这种病毒特异性地感染宿主小肠中的肠上皮细胞,并且已进化出抵抗干扰素和NF-KB信号的策略来躲避免疫系统,这就提出一个问题:其他的宿主因子是否参与肠道粘膜中的抗病毒反应。不过,针对体内(特别是通过NLR炎性体)检测和限制肠道病毒的机制,人们知之甚少。 | Shu Zhu, Zheng Wei, Noah W. Palm, Yi Yang, Hua Yu, Hua-Bing Li, Geng Wang, Xuqiu Lei, Marcel R. de Zoete, Jun Zhao, Yunjiang Zheng, Haiwei Chen, Liang Shan, Richard A. Flavell Siyuan Ding, Ningguo Feng, Harry B. Greenberg Siyuan Ding, Harry B. Greenberg Penghua Wang, Yujiao Zhao Wen Pan, Jun Lu Jun Zhao, Yuval Kluger Kellie A. Jurado, Clara Abraham, Erol Fikrig Erol Fikrig, Richard A. Flavell | 2017 | 现代生物医学进展2017，17，27： | 10 |
| 10 | Minireview on laparoscopic hepatobiliary and pancreatic surgery显示文摘The first laparoscopic cholecystectomy was performed in the mid-1980s. Since then, laparoscopic surgery has continued to gain prominence in numerous fields, and has, in some fields, replaced open surgery as the preferred operative technique. The role of laparoscopy in staging cancer is controversial, with regards to gallbladder carcinoma, pancreatic carcinoma, hepatocellular carcinoma and liver metastasis from colorectal carcinoma, laparoscopy in conjunction with intraoperative ultrasound has prevented nontherapeutic operations, and facilitated therapeutic operations. Laparoscopic cholecystectomy is the preferred option in the management of gallbladder disease. Meta-analyses comparing laparoscopic to open distal pancreatectomy show that laparoscopic pancreatectomy is safe and efficacious in the management of benign and malignant disease, and have better patient outcomes. A pancreaticoduodenectomy is a more complex operation and the laparoscopic technique is not feasible for this operation at this time. Robotic assisted pancreaticoduodenectomy has been tried with limited success at this time, but with continuing advancement in this field, this operation would eventually be feasible. Liver resection remains to be the best management for hepatocellular carcinoma, cholangiocarcinoma and colorectal liver metastases. Systematic reviews and meta-analyses have shown that laparoscopic liver resections result in patients with equal or less blood loss and shorter hospital stays, as compared to open surgery. With improving equipment and technique, and the incorporation of robotic surgery, minimally invasive liver resection operative times will improve and be more efficacious. With the incorporation of robotic surgery into hepatobiliary surgery, donor hepatectomies have also been completed with success. The management of benign and malignant disease with minimally invasive hepatobiliary and pancreatic surgery is safe and efficacious. | Clara Tan-Tam Stephen W Chung | 2014 | World Journal of Gastrointestinal Endoscopy2014，6，3： | 9 |
| 11 | Endoscopic management of gastrointestinal leaks and fistulae: Whatoption do we have?显示文摘Gastrointestinal leaks and fistulae are serious, potentially life threateningconditions that may occur with a wide variety of clinical presentations. Leaks aremostly related to post-operative anastomotic defects and are responsible for animportant share of surgical morbidity and mortality. Chronic leaks and longstanding post-operative collections may evolve in a fistula between twoepithelialized structures. Endoscopy has earned a pivotal role in the managementof gastrointestinal defects both as first line and as rescue treatment. Endotherapyis a minimally invasive, effective approach with lower morbidity and mortalitycompared to revisional surgery. Clips and luminal stents are the pioneer ofgastrointestinal (GI) defect endotherapy, whereas innovative endoscopic closuredevices and techniques, such as endoscopic internal drainage, suturing systemand vacuum therapy, has broadened the indications of endoscopy for themanagement of GI wall defect. Although several endoscopic options are currentlyused, a standardized evidence-based algorithm for management of GI defect isnot available. Successful management of gastrointestinal leaks and fistulaerequires a tailored and multidisciplinary approach based on clinical presentation,defect features (size, location and onset time), local expertise and the availabilityof devices. In this review, we analyze different endoscopic approaches, which weselected on the basis of the available literature and our own experience. Then, weevaluate the overall efficacy and procedural-specific strengths and weaknesses ofeach approach. | Fabrizio Cereatti Roberto Grassia Andrea Drago Clara Benedetta Conti Gianfranco Donatelli | 2020 | World Journal of Gastroenterology2020，26，29： | 8 |
| 12 | Holocene grassland vegetation, climate and human impact in central eastern Inner Mongolia显示文摘Phytolith and pollen preserved in the Taipusi Banner paleosol profile, central eastern Inner Mongolia, provide evidence of Holocene grassland vegetation, climate and human impact. The combined phytolith and pollen records reveal a major change in vegetation composition about 5000 a BP. Before 5000 a BP, the vegetation was dominated by Aneurolepidium Chinese-Stipa grandis grassland of C4 grasses. After 5000 a BP, C4 grasses rapidly retreated, indicating a shift to colder and more arid conditions. The gradual invasion of Stipa krylovii, Ag-ropyron desertorum, Ephedra, Chenopodiaceae and Caragana reveal the onset of grassland degeneration. Between 10000 and 8720 a BP, the Aneurolepidium Chinese-Stipa grandis grassland included a small proportion of Artemisia shrub and Echionopos type plants, implying a strong winter monsoon and very weak summer monsoon. From 8720 to 7000 a BP, C4 grasses were common, indicating a strengthening of the summer monsoon. Between 7000 and 5000 a BP, the Holocene thermal maximum was evident, with a significant expansion of C4 grasses and the presence of some trees (such as Pinus and Betula, and so on) in or near the study site. From 4200?000 a BP, a sandy grassland of Artemisia and Agropyron desertorum together with Aster-type taxa occurred. Precipitation amelioration took place between 3000 and 2170 a BP, with a rapid development of Echinops type plants and a small expansion of C4 grasses. From 2170 a BP to present, human activities accelerated the process of grassland degeneration. | HUANG Fei1, Kealhofer Lisa2, XIONG Shangfa3 & HUANG Fengbao1 1. Nanjing Institute of Geology and Paleontology,Chinese Academy of Sciences,Nanjing 210008,China 2. Anthropology and Sociology Department,Santa Clara University,CA 95053,USA 3. Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China | 2005 | Science China Earth Sciences2005，48，7： | 8 |
| 13 | Repression of the Auxin Response Pathway Increases Arabidopsis Susceptibility to Necrotrophic Fungi显示文摘在植物,到 necrotrophic 病原体的抵抗取决于在不同荷尔蒙系统之间的相互影响,例如水杨酸调整的那些酸(SA ) , jasmonic 酸(JA ) ,乙烯,和 abscisic 酸。由 SA 小径发信号的植物生长素的压抑最近被显示贡献抗菌剂抵抗。这里,我们表明表明在刺激植物生长素的 SCF (Skp1CullinF 盒子) ubiquitination 小径展览有缺点的异种 axr1, axr2,和 axr6 的那 Arabidopsis 植物生长素增加的危险性到 necrotrophic 真菌 Plectosphaerella cucumerina 和 Botrytis cinerea。另外,被 SCF-ubiquitin/proteasome 机械通常为移动指向的植物生长素 transcriptional 抑压者 AXR3 的稳定发生在 P 之上。cucumerina 感染。植物生长素运输或 proteasome 功能的药理学抑制各作为在非对待的植物生长素反应异种损害野类型的植物的 necrotroph 抵抗到类似的程度。这些结果建议植物生长素发信号为到 necrotrophic 真菌 P 的抵抗是重要的。cucumerina 和 B。cinerea。SGT1b (编码 HSP90/HSC70 合作女伴的二 Arabidopsis SGT1 基因之一) 在某些抵抗(R) 基因调节到 biotrophic 病原体的植物生长素和 JA 回答和抵抗支持 SCF E3-ubiquitin ligase 建筑群的功能。我们发现 sgt1b 异种对 P 同样抵抗。是的 cucumerina 野类型的植物。相反地, auxin/SCF 发信号异种在到 obligate biotrophic oomycete 的被触发 RPP4 的抵抗是不妥协的, Hyaloperonospora parasitica。因此,在到 oomycetes 的 R 调节基因的抵抗的 SGT1b 的占优势的行动看起来在除帮助 SCF E3-ubiquitin ligases 以外的一个地点。然而, sgt1b axr1 的基因添加在到 H 的危险性的两倍异种。一旦 plantpathogen 相容性被建立, parasitica 建议调停 SCF 的 ubiquitination 贡献限制 biotrophic 病原体殖民。 | Francisco Llorente Paul M usksktt Andrea Sanchez-Vallet Gemma Lopez Brisa Ramos Clara Sanchez-Rodriguez Lucia Jorda Jane Parker Antonio Molina | 2008 | Molecular Plant2008，1，3： | 8 |
| 14 | Sampling error and intraobserver variation in liver biopsy in patients with chronic HCV infection显示文摘 | Arie Regev Mariana Berho Lennox J Jeffers Clara Milikowski Enrique G Molina Nikolaos T Pyrsopoulos Zheng-Zhou Feng K.Rajender Reddy Eugene R Schiff | 2002 | The American Journal of Gastroenterology2002，，10： | 7 |
| 15 | Feeder-free maintenance of hESCs in mesenchymal stem cell-conditioned media: distinct requirements for TGF-β and IGF-Ⅱ显示文摘 | Rosa Montes Gertrudis Ligero Laura Sanchez Purificacidn Catalina Teresa de la Cueva Ana Nieto Gustavo J Melen Ruth Rubio Javier Garcia-Castro Clara Bueno Pablo Menendez | 2009 | Cell Research2009，19，6： | 7 |
| 16 | Ultrasound elastographic techniques in focal liver lesions显示文摘Elastographic techniques are new ultrasound-based imaging techniques developed to estimate tissue deformability/stiffness. Several ultrasound elastographic approaches have been developed, such as static elastography, transient elastography and acoustic radiation force imaging methods, which include point shear wave and shear wave imaging elastography. The application of these methods in clinical practice aims at estimating the mechanical tissues properties. One of the main settings for the application of these tools has been liver stiffness assessment in chronic liver disease, which has been studied mainly using transient elastography. Another field of application for these techniques is the assessment of focal lesions, detected by ultrasound in organs such as pancreas, prostate, breast, thyroid, lymph nodes. Considering the frequency and importance of the detection of focal liver lesions through routine ultrasound, some studies have also aimed to assess the role that elestography can play in studying the stiffness of different types of liver lesions, in order to predict their nature and thus offer valuable non-invasive methods for the diagnosis of liver masses. | Clara Benedetta Conti Federica Cavalcoli Mirella Fraquelli Dario Conte Sara Massironi | 2016 | World Journal of Gastroenterology2016，22，9： | 6 |
| 17 | Gene expression changes in spleens of the wildlife reservoir species,Eurasian wild boar(Sus scrofa),naturally infected with Brucella suis biovar 2显示文摘Brucella suis is responsible for swine brucellosis worldwide.Of the five different B.suis biovars(bv.),bv.2 appears restricted to Europe where it is frequently isolated from wild boar and hares,can infect pigs and can cause human brucellosis.In this study,the differential gene expression profile was characterized in spleens of Eurasian wild boar naturally infected with B.suis bv.2.Of the 20,201 genes analyzed in the microarray,633 and 1,373 were significantly(fold change > 1.8;P < 0.01) upregulated and downregulated,respectively,in infected wild boar.The analysis was focused on genes that were over represented after conditional test for biological process gene ontology.Upregulated genes suggested that B.suis bv.2 infection induced cell maturation,migration and/or proliferation in infected animals.The genes downregulated in infected wild boar impaired the activity of several important cellular metabolic pathways such as metabolism,cytoskeleton organization and biogenesis,immune response and lysosomal function and vesicle-mediated transport.In addition,the response to stress,sperm fertility,muscle development and apoptosis seemed to be also impaired in infected animals.These results suggested that B.suis bv.2 may use strategies similar to other smooth brucellae to facilitate intracellular multiplication and the development of chronic infections.To our knowledge,this is the first report of the analysis of gene expression profile in hosts infected with B.suis bv.2,which is important to understand the molecular mechanisms at the host-pathogen interface in the main reservoir species with possible implications in the zoonotic cycle of the pathogen. | Ruth C.Galindo Pilar M.Muoz María J.de Miguel Clara M.Marin Javier Labairu Miguel Revilla José M.Blasco Christian Gortazar José de la Fuente | 2010 | Journal of Genetics and Genomics2010，37，11： | 6 |
| 18 | Vertically acquired hepatitis C virus infection:Correlates oftransmission and disease progression显示文摘The worldwide prevalence of hepatitis C virus(HCV)infection in children is 0.05%-0.4% in developed countries and 2%-5% in resource-limited settings, where inadequately tested blood products or un-sterile medical injections still remain important routes of infection. After the screening of blood donors, motherto-child transmission(MTCT) of HCV has become the leading cause of pediatric infection, at a rate of 5%. Maternal HIV co-infection is a significant risk factor for MTCT and anti-HIV therapy during pregnancy seemingly can reduce the transmission rate of both viruses. Conversely, a high maternal viral load is an important, but not preventable risk factor, because at present no anti-HCV treatment can be administered to pregnant women to block viral replication. Caution is needed in adopting obstetric procedures, such as amniocentesis or internal fetal monitoring, that can favor fetal exposure to HCV contaminated maternal blood, though evidence is lacking on the real risk of single obstetric practices. Mode of delivery and type of feeding do not represent significant risk factors for MTCT. Therefore, there is no reason to offer elective caesarean section or discourage breast-feeding to HCV infected parturients. Information on the natural history of vertical HCV infection is limited. The primary infection is asymptomatic in infants. At least one quarter of infected children shows a spontaneous viral clearance(SVC) that usually occurs within 6 years of life. IL-28 B polymorphims and genotype 3 infection have been associated with greater chances of SVC. In general, HCV progression is mild or moderate in children with chronic infection who grow regularly, though cases with marked liver fibrosis or hepatic failure have been described. Non-organ specific autoantibodies and cryoglobulins are frequently found in children with chronic infection, but autoimmune diseases or HCV associated extrahepatic manifestations are rare. | Pier-Angelo Tovo Carmelina Calitri Carlo Scolfaro Clara Gabiano Silvia Garazzino | 2016 | World Journal of Gastroenterology2016，22，4： | 6 |
| 19 | Urine-derived stem/progenitor cells:A focus on their characterization and potential显示文摘Cell therapy,i.e.,the use of cells to repair an affected tissue or organ,is at the forefront of regenerative and personalized medicine.Among the multiple cell types that have been used for this purpose[including adult stem cells such as mesenchymal stem cells or pluripotent stem cells],urine-derived stem cells(USCs)have aroused interest in the past years.USCs display classical features of mesenchymal stem cells such as differentiation capacity and immunomodulation.Importantly,they have the main advantage of being isolable from one sample of voided urine with a cheap and unpainful procedure,which is broadly applicable,whereas most adult stem cell types require invasive procedure.Moreover,USCs can be differentiated into renal cell types.This is of high interest for renal cell therapy-based regenerative approaches.This review will firstly describe the isolation and characterization of USCs.We will specifically present USC phenotype,which is not an object of consensus in the literature,as well as detail their differentiation capacity.In the second part of this review,we will present and discuss the main applications of USCs.These include use as a substrate to generate human induced pluripotent stem cells,but we will deeply focus on the use of USCs for cell therapy approaches with a detailed analysis depending on the targeted organ or system.Importantly,we will also focus on the applications that rely on the use of USC-derived products such as microvesicles including exosomes,which is a strategy being increasingly employed.In the last section,we will discuss the remaining barriers and challenges in the field of USC-based regenerative medicine. | Perrine Burdeyron Sébastien Giraud Thierry Hauet Clara Steichen | 2020 | World Journal of Stem Cells2020，12，10： | 6 |
| 20 | Dynamic and reversibility of heterochromatic gene silencing in human dis-ease显示文摘In eukaryotic organisms cellular fate and tissue specific gene expression are regulated by the activity of proteins known as transcription factors that by interacting with specific DNA sequences direct the activation or repression of target genes. The post genomic era has shown that transcription factors are not the unique key regulators of gene expression. Epigenetic mechanisms such as DNA methylation, post-translational modifications of histone proteins, remodeling of nucleosomes and expression of small regulatory RNAs also contribute to regulation of gene expression, determination of cell and tissue specificity and assurance of inheritance of gene expression levels. The relevant contri- bution of epigenetic mechanisms to a proper cellular function is highlighted by the effects of their deregulation that cooperate with genetic alterations to the development of various diseases and to the establishment and progression of tumors. | Giuseppe ZARDO Francesco FAZI Lorena TRAVAGLINI Clara NERVI | 2005 | Cell Research2005，15，9： | 5 |
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