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| 1 | Polymorphisms of the TLR2 and TLR4 genes are associated with risk of gastric cancer in a Brazilian population显示文摘AIM:To investigate toll-like receptor 2(TLR2)-196 to-174 del,and TLR4(+896A/G rs4986790 and +1196C/T rs4986791) polymorphisms at risk of chronic gastritis and gastric cancer in a Brazilian population and association of gastric lesions with risk factors such as smoking,alcohol intake and Helicobacter pylori infection.METHODS:In this case-control study,polymorphism at TLR2-196 to-174 del was investigated by using the allele-specific polymerase chain reaction(PCR) method,while the PCR-restriction fragment length polymorphism technique was carried out to identify the TLR4(rs4986790 and rs4986791) genotypes in 607 Brazilian individuals(208 with chronic gastritis-CG,174 with gastric cancer-GC and 225 controls-C).RESULTS:The single nucleotide polymorphisms TLR4 +1196C/T was not associated with risk of chronic gastritis or gastric cancer and the homozygous genotypes TLR4 +896GG and TLR4 +1196TT were absent in the studied population.However,the frequency of TLR2-196 to-174 ins/del + del/del and TLR4 +896AG genotypes was significantly higher(P < 0.01 and P = 0.01,respectively) in the cancer group(33.4% and 11.5%,respectively) than in the control group(16.9% and 4.5%,respectively).It was also observed that the G-C haplotype of the TLR4 +896A/G+1196C/T(P = 0.02) and the combination of variant alleles of the TLR2 /TLR4 +896G(P = 0.02) are associated with susceptibility to gastric cancer.In addition,the multiple logistic regression showed that male gender [odds ratio(OR) = 2.70;95% CI:1.66-4.41;P < 0.01],alcohol intake(OR = 2.93;95% CI:1.76-4.87;P < 0.01),TLR2-196 to-174 del(OR = 2.64;95% CI:1.56-4.44;P < 0.01) and TLR4 +896G(OR = 3.19;95% CI:1.347.61;P < 0.01) polymorphisms were associated with a higher susceptibility to developing this neoplasm.CONCLUSION:Our data indicate that TLR2-196 to-174 del and TLR4 +896G may increase the risk of gastric cancer in a Brazilian population. | Juliana Garcia de Oliveira Ana Elizabete Silva | 2012 | World Journal of Gastroenterology2012,18,11: | 20 |
| 2 | Epidemiological Evolution of Lung Cancer in the South of Spain from 1990 to 2010显示文摘Background: Changes in lung cancer has been characterized by the increase of cases among women and the increase in adenocarcinomas among other histological subtypes.Methods: Descriptive analysis of cases diagnosed with lung cancer in Hospital Virgen de las Nieves(Spain) from 1990 to 2010,based on five variables(age, sex, smoking, histology and pathological anatomy). The study establishes associations between these variables and compares the results with the literature.Results: 2,026 patients were diagnosed with lung cancer in this period; 1,838 were males(90.7%) and 188 women(9.3%); 1,892 patients(93.4%) were smokers or ex-smokers and 134(6.6%) had never smoked; the most frequent non-small cell histology types were squamous cell carcinoma and adenocarcinoma and it was the most frequent neoplasia in women and were associated with a lower tobacco consumption.Conclusion: The large majority of lung cancer cases is associated with a history of smoking tobacco and there are histopathological differences according to gender and cumulative tobacco smoke load. | Alberto Caballero Vázquez Ana Dolores Romero Ortiz Jose Manuel González de Vega San Román Raimundo García del Moral Bernardino Alcázar Navarrete | 2018 | 中国肺癌杂志2018,21,1: | 17 |
| 3 | Injection of bone marrow mesenchymal stem cells by intravenous or intraperitoneal routes is a viable alternative to spinal cord injury treatment in mice显示文摘In spite of advances in surgical care and rehabilitation,the consequences of spinal cord injury(SCI)ar still challenging.Several experimental therapeutic strategies have been studied in the SCI field,and recen advances have led to the development of therapies that may act on the inhibitory microenvironment.As sorted lineages of stem cells are considered a good treatment for SCI.This study investigated the effect o systemic transplantation of mesenchymal stem cells(MSCs)in a compressive SCI model.Here we presen results of the intraperitoneal route,which has not been used previously for MSC administration after comveI.WeafC57BL/6nt lmy atb spinal cord compression for 1 minute with a 30-g vascular clip.The animals were divided into five groups DMEM at 7 days after SCI),DMEM i.v.(intravenous injection of 500μL of DMEM at 7 days after SCI)The effects of MSCs transplantation in white matter sparing were analyzed by luxol fast blue staining.Th number of preserved fibers was counted in semithin sections stained with toluidine blue and the presenc of trophic factors was analyzed by immunohistochemistry.In addition,we analyzed the locomotor perfor mance with Basso Mouse Scale and Global Mobility Test.Our results showed white matter preservation and a larger number of preserved fibers in the MSC groups than in the DMEM groups.Furthermore,th MSC groups had higher levels of trophic factors(brain-derived neurotrophic factor,nerve growth factor neurotrophin-3 and neurotrophin-4)in the spinal cord and improved locomotor performance.Our result indicate that injection of MSCs by either intraperitoneal or intravenous routes results in beneficial out comes and can be elected as a choice for SCI treatment. | Bruna dos Santos Ramalho FernANDa Martins de Almeida Conrado Mendonca Sales Silmara de Lima Ana Maria Blanco Martinez | 2018 | Neural Regeneration Research2018,13,6: | 12 |
| 4 | WJSC 6^(th) Anniversary Special Issues(2):Mesenchymal stem cells Neurotrauma and mesenchymal stem cells treatment:From experimental studies to clinical trials显示文摘Mesenchymal stem cell(MSC)therapy has attracted the attention of scientists and clinicians around the world.Basic and pre-clinical experimental studies have highlighted the positive effects of MSC treatment after spinal cord and peripheral nerve injury.These effects are believed to be due to their ability to differentiate into other cell lineages,modulate inflammatory and immunomodulatory responses,reduce cell apoptosis,secrete several neurotrophic factors and respond to tissue injury,among others.There are many pre-clinical studies on MSC treatment for spinal cord injury(SCI)and peripheral nerve injuries.However,the same is not true for clinical trials,particularly those concerned with nerve trauma,indicating the necessity of more well-constructed studies showing the benefits that cell therapy can provide for individuals suffering the consequences of nerve lesions.As for clinical trials for SCI treatment the results obtained so far are not as beneficial as those described in experimental studies.For these reasons basic and pre-clinical studies dealing with MSC therapy should emphasize the standardization of protocols that could be translated to the clinical set with consistent and positive outcomes.This review is based on pre-clinical studies and clinical trials available in the literature from 2010 until now.At the time of writing this article there were 43 and 36 pre-clinical and 19 and 1 clinical trials on injured spinal cord and peripheral nerves,respectively. | Ana Maria Blanco Martinez Camila de Oliveira Goulart Bruna dos Santos Ramalho Júlia Teixeira Oliveira Fernanda Martins Almeida | 2014 | World Journal of Stem Cells2014,6,2: | 11 |
| 5 | 这项临床试验完成注册了吗?——国际医学杂志编辑委员会声明显示文摘 | Catherine De Angelis Jeffrey M. Drazen Frank A. Frizelle Charlotte Haug John Hoey Richard Horton Sheldon Kotzin Christine Laine Ana Marusic A. John P.M. Overbeke Torben V.Schroeder Harold C. Sox Martin B. Van Der Weyden 刁骧(译) 孙丁(审校) 秦莉(审校) | 2006 | 中国循证医学杂志2006,6,4: | 11 |
| 6 | Bartter's syndrome:clinical findings,genetic causes and therapeutic approach显示文摘Backgound Bartter's syndrome(BS)is a rare group of salt losing tubulopathies due to the impairment of transport mecha-nisms at the thick ascending limb of the Henle's loop.Data sources Literature reviews and original research articles were collected from database,including PubMed and Scopus.Results According to the time of onset and symptoms,BS can be classified into antenatal and classic BS.Molecular studies have identified different subtypes of BS.BS types Ⅰ,Ⅱ and Ⅲ are caused by mutations on genes encoding the luminal Na^(+)-K^(+)-2Cl^(-) co-transporter,the luminal K+ channel ROMK,and the basolateral chloride channel ClC-Kb(CLCNKB),respectively.Loss-of-function mutations of Barttin CLCNK type accessory beta subunit cause BS type Ⅳa.Simultaneous mutations of CLCNKB and CLCNKA cause BS type Ⅳb.BS type Ⅴ consists in a novel transient form characterized by antenatal presentation due to mutations in the MAGE family member D2.Severe gain-of-function mutations of the extracellular calcium sensing receptor gene can result in an autosomal dominant condition of BS.Main clinical and biochemical alterations in BS include polyuria,dehydration,hypokalemia,hypochloremic metabolic alka-losis,hyperreninemia,high levels of prostaglandins,normal or low blood pressure,hypercalciuria and failure to thrive.Treatment focuses mainly at correcting dehydration and electrolyte disturbances and in measures to reduce polyuria,including the use of nonsteroidal anti-inflammatory medications to control excessive renal prostaglandin E2 production.Conclusions Early diagnosis and treatment of BS may prevent long-term consequences such as growth failure,nephrocal-cinosis and end-stage renal disease. | Flavia Cristina Carvalho Mrad Sílvia Bouissou Morais Soares Luiz Alberto Wanderley de Menezes Silva Pedro Versiani dos Anjos Menezes Ana Cristina Simoes-e-Silva | 2021 | World Journal of Pediatrics2021,17,1: | 10 |
| 7 | TLR2 and TLR4 polymorphisms influence m RNA and protein expression in colorectal cancer显示文摘AIM: To evaluate the effect of promoter region polymorphisms of toll-like receptor(TLR)2-196 to-174 del and TLR4-1607T/C(rs10759932) on m RNA and protein expression in tumor tissue and of TLR4+896A/G(rs4986790) on colorectal cancer(CRC) risk.METHODS: The TLR2-196 to-174 del polymorphism was investigated using allele-specific polymerase chain reaction(PCR) and the TLR4-1607T/C and TLR4+896A/G by PCR-restriction fragment length p o l y m o r p h i s m( R F L P). W e g e n o t y p e d 4 3 4 D N A samples from 194 CRC patients and 240 healthy individuals. The m RNA relative quantification(RQ) was performed in 40 tumor tissue samples by quantitative PCR Taq Man assay, using specific probes for TLR2 and TLR4 genes, and ACTB and GAPDH reference geneswere used as endogenous controls. Protein expression was analyzed by immunohistochemistry with specific primary antibodies.RESULTS: No association was found for TLR4-1607T/C and TLR4+896A/G by three statistical models(logadditive, dominant and recessive). However, based on dominant and log-additive models, the polymorphic variant TLR2-196 to-174 del was associated with increased CRC risk [dominant: odds ratio(OR) = 1.72, 95%CI: 1.03-2.89; P = 0.038 and log-additive: OR =1.59, 95%CI: 1.02-2.48; P = 0.039]. TLR2 m RNA expression was increased in tumor tissue(RQ = 2.36) when compared to adjacent normal tissue(RQ = 1; P < 0.0001), whereas the TLR4 m RNA showed a basal expression(RQ = 0.74 vs RQ = 1, P = 0.452). Immunohistochemistry analysis of TLR2 and TLR4 protein expression was concordant with the findings of m RNA expression. In addition, the TLR2-196 to-174 del variant carriers showed m RNA relative expression 2.19 times higher than wild-genotype carriers. The TLR2 protein expression was also higher for the TLR2-196 to-174 del variant carriers [117 ± 10 arbitrary unit(a.u.) vs 95 ± 4 a.u., P = 0.03]. However, for the TLR4-1607T/C polymorphism no significant difference was found for both m RNA(P = 0.56) and protein expression(P = 0.26).CONCLUSION: Our findings suggest that TLR2-196 to-174 del polymorphism increases TLR2 m RNA expression and is associated with higher CRC risk, indicating an important role in CRC genetic susceptibility. | Marcela Alcantara Proenca Juliana Garcia de Oliveira Aline Cristina Targa Cadamuro Maysa Succi Joao Gomes Netinho Eny Maria Goloni-Bertolo érika Cristina Pavarino Ana Elizabete Silva | 2015 | World Journal of Gastroenterology2015,21,25: | 9 |
| 8 | Toll-like receptor 9 polymorphisms and Helicobacter pylori influence gene expression and risk of gastric carcinogenesis in the Brazilian population显示文摘BACKGROUND Toll-like receptors(TLRs)are the first line of host defense,and are involved in Helicobacter pylori(H.pylori)recognition and activation of both inflammatory and carcinogenic processes.The presence of single nucleotide polymorphisms(SNPs)in genes that activate the immune response may modulate the risk of precancerous lesions and gastric cancer(GC).Among them,Toll-like receptor 9(TLR9)polymorphisms have emerged with a risk factor of infectious diseases and cancer,however the studies are still inconclusive.AIM To evaluate whether TLR9 rs5743836 and rs187084 SNPs contribute to the risk of gastric carcinogenesis,and its influence on mRNA expression.METHODS A case-control study was conducted to evaluate two TLR9 SNPs(TLR9-1237 TCrs5743836 and TLR9-1486 CT-rs187084)in chronic gastritis(CG)and GC patients.A total of 609 DNA samples of peripheral blood[248 CG,161 GC,and 200 samples from healthy individuals(C)]were genotyped by polymerase chain reaction-restriction fragment length polymorphism.All samples were tested for the H.pylori infection using Hpx1 and Hpx2 primers.Quantitative polymerase chain reaction by TaqMan?assay was used to quantify TLR9 mRNA from fresh gastric tissues(48 GC,26 CG,and 14 C).RESULTS For TLR9-1237,the TC+CC or CC genotypes were associated with a higher risk of GC than C[recessive model odds ratio(OR)=5.01,95%confidence interval(CI):2.52-9.94,P<0.0001],and the CG(recessive model OR=4.63;95%CI:2.44-8.79,P<0.0001)groups.For TLR9-1486,an association between the CT+TT genotypes and increased risk of both GC(dominant model OR=2.72,95%CI:1.57-4.72,P<0.0001)and CG(dominant model OR=1.79,95%CI:1.15-2.79,P=0.0094)was observed when compared to the C group.Moreover,the presence of TLR9-1237 TC/CC+TLR9-1486 CC genotypes potentiate the risk for this neoplasm(OR=18.57;95%CI:5.06-68.15,P<0.0001).The TLR9 mRNA level was significantly higher in the GC group(RQ=9.24,P<0.0001)in relation to the CG group(RQ=1.55,P=0.0010)and normal mucosa(RQ=1.0).When the samples were grouped according to the polymorphic genotypes and the presence of H.pylori infection,an influence of TLR9-1237 TC+CC polymorphic genotypes(P=0.0083)and H.pylori infection(P<0.0001)was observed on the upregulation of mRNA expression.CONCLUSION Our findings show that TLR9 rs5743836 and rs187084 polymorphisms are associated with a higher risk of carcinogenesis gastric,and that TLR9 mRNA levels can be modulated by TLR9-1237 TC+CC variant genotypes and H.pylori infection. | Manoela Dias Susi de Matos Lourenco Caroline Lucas Trevizani Rasmussen Spencer Luis Marques Payao Ana Flavia Teixeira Rossi Ana Elizabete Silva Juliana Garcia de Oliveira-Cucolo | 2019 | World Journal of Gastrointestinal Oncology2019,11,11: | 9 |
| 9 | Mitomycin C in pterygium treatment显示文摘Pterygium is a benign lesion usually growing from the nasal side of the conjunctiva onto the cornea.Most cases of pterygium does not cause problem or requires specific treatment.The exact cause of pterygium is not clear yet,but some factors are pointed as causes,being the most important the long-term ultraviolet ray exposure.Pterygium surgery is usually considered when there are symptoms that do not respond to conservative treatment.Recurrence is the main complication of the surgery,and much has been done to avoid it.Mitomycin C(MMC) has been used as a fibroblast proliferation inhibitor during the surgery to reduce the chance of recurrence of the pterygium.This review describes the use of MMC as an adjunctive,the optimal dosage,the duration of administration of MMC and possible complications,when used during,after and before the surgery.Most studies suggest that increased exposure(dose or duration) of MMC is associated with a lower recurrence,but with higher risks of complications. | Thiago Goncalves dos Santos Martins Ana Luiza Fontes de A zevedo Costa Milton Ruiz Alves Roger Chammas Paulo Schor | 2016 | International Journal of Ophthalmology(English edition)2016,9,3: | 8 |
| 10 | Helicobacter pylori and corpus gastric pathology are associated with lower serum ghrelin显示文摘AIM To evaluate the association of Helicobacter pylori(H. pylori), cag A genotype, and type of gastric pathology with ghrelin, leptin and nutritional status.METHODS Fasted dyspeptic adults(18-70 years) referred for an upper digestive endoscopy were enrolled in this crosssectional study. Height and weight were assessed for body mass index(BMI) calculation. A sociodemographic survey was administered and nutrient intake was evaluated with 24 h dietary recalls. Serum total ghrelin and leptin levels were analyzed by enzymelinked immunosorbent assay. 13 C-Urea Breath Test was performed and four gastric biopsies were obtained during endoscopy for histopathology and H. pylori DNA amplification and genotyping. Data analysis was performed using χ2, Mann-Whitney U, Kruskal-Wallis tests, Spearman's correlation and linear regression.RESULTS One hundred and sixty-three patients(40.8 ± 14.0 years), 98/65 females/males, were included. Overall, persistent H. pylori prevalence was 53.4%(95%CI: 45.7%-65.8%). Neither nutrient intake nor BMI differed significantly between H. pylori positive and negative groups. Serum ghrelin was significantly lower in infected patients [median 311.0 pg/m L(IQR 230.0-385.5)] than in uninfected ones [median 355.0 pg/m L(IQR 253.8-547.8)](P = 0.025), even after adjusting for BMI and gender(P = 0.03). Ghrelin levels tended to be lower in patients carrying cag A positive strains both in the antrum and the corpus; however, differences with those carrying cag A negative strains did not reach statistical significance(P = 0.50 and P = 0.49, respectively). In addition, the type and severity of gastric pathology in the corpus was associated with lower serum ghrelin(P = 0.04), independently of H.pylori status. Conversely, leptin levels did not differ significantly between infected and uninfected patients [median 1.84 ng/m L(0.80-4.85) vs 1.84 ng/m L(0.50-5.09),(P = 0.51)]. CONCLUSION H. pylori infection and severity of gastric corpus pathology are associated with lower serum ghrelin. Further studies could confirm a lower ghrelin prevalence in cag A-positive patients. | Paula Mantero Gonzalo Sebastián Matus Rodolfo Ernesto Corti Ana María Cabanne Gerardo Gabriel Zerbetto de Palma Liliana Marchesi Olid María Marta Piskorz Marcela Beatriz Zubillaga Mariana Andrea Janjetic Cinthia Gabriela Goldman | 2018 | World Journal of Gastroenterology2018,24,3: | 8 |
| 11 | “徒手针刺影响健康人和中风后遗症患者肱二头肌功能的即时效果的平行随机对照试验”的研究方案(英文)显示文摘背景:中风作为一种疾病,中医早在2 000多年前即有诸多经典著作对其进行描述。然而,大部分有关针刺对中风后遗症患者功能恢复的疗效的临床对照试验未能得出针刺具有长期疗效的结论。并且,很多试验以表面肌电图测量患者骨骼肌的电活动以评定针刺刺激的即时疗效的结论也不一致。这些研究结果对针刺在神经肌肉水平的作用提出了质疑。本研究旨在比较徒手针刺影响健康人和中风后肌张力亢进患者的肱二头肌功能及力量的即时效果。方法与设计:本研究拟开展含有4个平行对照组的随机单盲临床试验。分别针刺健康受试者及中风后遗症痉挛性轻瘫患者的曲池(LI11)及天泉(PC2)2个穴位。表面肌电图测量针刺对于肌肉功能的即时疗效及肱二头肌的等长张力作为主要结局指标。次要结局指标包括每组中医证候的出现频率及频率分布。讨论:本研究的临床试验设计在方法学上较之前的类似试验有些改善。预计这一研究能够证实针刺刺激对健康人及中风后遗症患者的神经肌肉的作用。临床试验注册:巴西临床试验注册(www.ensaiosclinicos.gov.br,注册号为RBR-5g7xqh). | Ana Paula de Sousa Fragoso Arthur de Sá Ferreira | 2012 | 中西医结合学报2012,10,3: | 8 |
| 12 | Ophthalmic manifestations in patients with inflammatory bowel disease: a review显示文摘Clinical manifestations of inflammatory bowel disease(IBD) are not locally restricted to the gastrointestinal tract, and a significant portion of patients have involvement of other organs and systems. The visual system is one of the most frequently affected, mainly by inflammatory disorders such as episcleritis, uveitis and scleritis. A critical review of available literature concerning ocular involvement in IBD, as it appears in Pub Med, was performed. Episcleritis, the most common ocular extraintestinal manifestation(EIM), seems to be more associated with IBD activity when compared with other ocular EIMs. In IBD patients, anterior uveitis has an insidious onset, it is longstanding and bilateral, and not related to the intestinal disease activity. Systemic steroids or immunosuppressants may be necessary in severe ocular inflammation cases, and control of the underlying bowel disease is important to prevent recurrence. Our review revealed that ocular involvement is more prevalent in Crohn's disease than ulcerative colitis, in active IBD, mainly in the presence of other EIMs. The ophthalmic symptoms in IBD are mainly nonspecific and their relevance may not be recognized by the clinician; most ophthalmic manifestations are treatable, and resolve without sequel upon prompt treatment. A collaborative clinical care team for management of IBD that includes ophthalmologists is central for improvement of quality care for these patients, and it is also cost-effective. | Leandro Lopes Troncoso Ana Luiza Biancardi Haroldo Vieira de Moraes Jr Cyrla Zaltman | 2017 | World Journal of Gastroenterology2017,23,32: | 7 |
| 13 | 大气二氧化氮与每日总死亡率、心血管和呼吸系统疾病死亡率的短期关联:398个城市的多中心分析显示文摘目的:采用统一的分析方案,评估全球多个国家/地区的二氧化氮(NO_(2))与总死亡率、心血管和呼吸系统疾病死亡率之间的短期关联。研究设计:采用两阶段的时间序列分析方法、过度离散的广义线性模型和多水平meta分析。研究地点:22个低到高收入国家/地区的398个城市。主要结局指标:1973—2018年逐日总死亡人数(6280万人)、心血管疾病死亡人数(1970万人)和呼吸系统疾病死亡人数(550万人)。结果:平均而言,NO_(2)浓度在滞后1天(前1天)每增加10μg/m^(3),会导致总死亡率、心血管和呼吸系统疾病死亡率分别增加0.46%(95%可信区间0.36%~0.57%)、0.37%(0.22%~0.51%)、0.47%(0.21%~0.72%)。在对共污染物(PM_(10)、PM_(2.5)、臭氧、二氧化硫和一氧化碳)进行调整后,这些关联仍然很稳定。所有3种死因的暴露-反应曲线几乎是线性的,没有明显的阈值。在398个城市中,可归因于高过假定零水平的NO_(2)浓度造成的死亡比例为1.23%(95%可信区间0.96%~1.51%)。结论:这项多中心研究提供了关于NO_(2)短期暴露与总死亡率、心血管和呼吸系统死亡风险之间的独立和线性关联的关键证据,说明通过加强NO_(2)的控制和监管限制标准,可获得人群水平的健康收益。 | 孟夏 刘聪(校) 陈仁杰 郑湃(译) 阚海东(校) Francesco Sera Ana Vicedo-Cabrera Ai Milojevic Maria Guo Yuming Tong Shilu Micheline de Sousa Zanotti Stagliorio Coelh Paulo Hilario Nascimento Saldiva Eric Lavigne Patricia Matus Correa Nicolas Valdes Ortega Samuel Osorio Garcia Jan Kysely Ales Urban Hans Orru Marek Maasikmets Jouni J K Jaakkola Niilo Ryti Veronika Huber Alexandra Schneider Klea Katsouyanni Antonis Analitis Masahiro Hashizume Yasushi Honda Chris Fook Sheng Ng Baltazar Nunes João Paulo Teixeira Iulian Horia Holobaca Simona Fratianni Ho Kim Aurelio Tobias Carmeníniguez Bertil Forsberg ChristoferÅström Martina S Ragettli Yue-Liang Leon Guo Shih-Chun Pan Shanshan Li Michelle L Bell Antonella Zanobetti Joel Schwartz Tangchun Wu Antonio Gasparrini | 2021 | 英国医学杂志中文版2021,24,8: | 7 |
| 14 | 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 |
| 15 | Comparative Transcriptomic Analysis of Salt Adaptation in Roots of Contrasting Medicago truncatula Genotypes显示文摘进化差异能被和不同环境的植物的相互作用驾驶。涉及生态的改编到不能生活的限制的分子的底能用 genomic 工具被探索。荚是世界范围的主要庄稼,土壤咸度是在这些植物影响产量的一个主要压力。我们在 Medicago truncatula 荚分析了让对比回答腌应力的二遗传型的根 transcriptome:TN1.11,在咸突尼斯的土壤,和参考 Jemalong A17 遗传型取样了。TN1.11 植物在盐应力以及钠离子的微分累积下面看增加的根生长是否与 A17 相比。Transcriptomic 分析揭示了盐优先地在 TN1.11 的根顶调整的特定的基因簇,尤其是那些与植物生长素小径有关并且到在 histone 变体 isoforms 的变化。编码抄写因素(TF ) 的许多基因也是响应盐在二遗传型之间调整的差别。在为功能的研究选择的那些之中,在大多数差别在遗传型之间调整了的 bHLH 类型 TF 的 A17 遗传型的根的 overexpression 显著地在盐应力下面改进了根生长。尽管有微分 transcriptional 回答的全球复杂性,我们建议这 bHLH TF 表情的增加可以被连接到 M 的改编。truncatula 到盐的土壤环境。 | Ons Zahaf Sandrine Blanchet Axel de Zelicourt Benoit Alunni Julie Plet Carole Laffont Laura de Lorenzo Sandrine Imbeaud Jean-Laurent lchante Anouck Diet Mounawer Badri Ana Zabalza Esther M. Gonzalez Herve Delacroix Veronique Gruber Florian Frugier Martin Crespi | 2012 | Molecular Plant2012,5,5: | 7 |
| 16 | Gut microbiota,inflammatory bowel disease and colorectal cancer显示文摘The gut microbiota is a complex community of microorganisms that inhabit the digestive tracts of humans,living in symbiosis with the host.Dysbiosis,characterized by an imbalance between the beneficial and opportunistic gut microbiota,is associated with several gastrointestinal disorders,such as irritable bowel syndrome(IBS);inflammatory bowel disease(IBD),represented by ulcerative colitis and Crohn’s disease;and colorectal cancer(CRC).Dysbiosis can disrupt the mucosal barrier,resulting in perpetuation of inflammation and carcinogenesis.The increase in some specific groups of harmful bacteria,such as Escherichia coli(E.coli)and enterotoxigenic Bacteroides fragilis(ETBF),has been associated with chronic tissue inflammation and the release of pro-inflammatory and carcinogenic mediators,increasing the chance of developing CRC,following the inflammationdysplasia-cancer sequence in IBD patients.Therefore,the aim of the present review was to analyze the correlation between changes in the gut microbiota and the development and maintenance of IBD,CRC,and IBD-associated CRC.Patients with IBD and CRC have shown reduced bacterial diversity and abundance compared to healthy individuals,with enrichment of Firmicute sand Bacteroidetes.Specific bacteria are also associated with the onset and progression of CRC,such as Fusobacterium nucleatum,E.coli,Enterococcus faecalis,Streptococcus gallolyticus,and ETBF.Future research can evaluate the advantages of modulating the gut microbiota as preventive measures in CRC high-risk patients,directly affecting the prognosis of the disease and the quality of life of patients. | Ana Elisa Valencise Quaglio Thais Gagno Grillo Ellen Cristina Souza De Oliveira Luiz Claudio Di Stasi Ligia Yukie Sassaki | 2022 | World Journal of Gastroenterology2022,28,30: | 7 |
| 17 | Personalizing therapies for gastric cancer: Molecular mechanisms and novel targeted therapies显示文摘Globally,gastric cancer is the 4thmost frequently diagnosed cancer and the 2ndleading cause of death from cancer,with an estimated 990000 new cases and738000 deaths registered in 2008.In the advanced setting,standard chemotherapies protocols acquired an important role since last decades in prolong survival.Moreover,recent advances in molecular therapies provided a new interesting weapon to treat advanced gastric cancer through anti-human epidermal growth factor receptor 2(HER2)therapies.Trastuzumab,an anti-HER2 monoclonal antibody,was the first target drug in the metastatic setting that showed benefit in overall survival when in association with platinum-5-fluorouracil based chemotherapy.Further,HER2 overexpression analysis acquired a main role in predict response for trastuzumab in this field.Thus,we conducted a review that will discuss the main points concerning trastuzumab and HER2 in gastric cancer,providing a comprehensive overview of molecular mechanisms and novel trials involved. | Michael Luis Ana Tavares Liliana S Carvalho Lúcio Lara-Santos António Araújo Ramon Andrade de Mello | 2013 | World Journal of Gastroenterology2013,19,38: | 6 |
| 18 | Beneficial effects of saffron(Crocus sativus L.) in ocular pathologies, particularly neurodegenerative retinal diseases显示文摘Saffron(Crocus sativus L.)has been traditionally used in food preparation and as a medicinal plant.It currently has numerous therapeutic properties attributed to it,such as protection against ischemia,as well as anticonvulsant,antidepressant,anxiolytic,hypolipidemic,anti-atherogenic,anti-hypertensive,antidiabetic,and anti-cancer properties.In addition,saffron has remarkable beneficial properties,such as anti-apoptotic,anti-inflammatory and antioxidant activities,due to its main metabolites,among which crocin and crocetin stand out.Furthermore,increasing evidence underwrites the possible neuroprotective role of the main bioactive saffron constituents in neurodegenerative diseases,such as Parkinson’s and Alzheimer’s diseases,both in experimental models and in clinical studies in patients.Currently,saffron supplementation is being tested for ocular neurodegenerative pathologies,such as diabetic retinopathy,retinitis pigmentosa,age-related macular degeneration and glaucoma,among others,and shows beneficial effects.The present article provides a comprehensive and up to date report of the investigations on the beneficial effects of saffron extracts on the main neurodegenerative ocular pathologies and other ocular diseases.This review showed that saffron extracts could be considered promising therapeutic agents to help in the treatment of ocular neurodegenerative diseases. | Jose A.Fernandez-Albarral Rosa de Hoz Ana I.Ramirez Ines Lopez-Cuenca Elena Salobrar-Garcia Maria D.Pinazo-Duran Jose M.Ramirez Juan J.Salazar | 2020 | Neural Regeneration Research2020,15,8: | 6 |
| 19 | Dietary supplementation with free methionine or methionine dipeptide mitigates intestinal oxidative stress induced by Eimeria spp. challenge in broiler chickens显示文摘Background: This study evaluated the effects of Eimeria spp. challenge and dietary supplementation with free methionine or methionine dipeptide on animal performance;expression of genes associated with the immune system, antioxidant system, and amino acid transport in the jejunum;and redox status of the jejunum of broiler chickens.Methods: A randomized, 2 × 3 factorial design was used, in which Eimeria spp. challenge was the first factor(Eimeria-challenged, EC, or unchallenged, UC, broilers) and methionine supplementation was the second factor(non-supplemented, NS;free DL-methionine, DL-Met;and methionine dipeptide, DL-methionyl-DL-methionine, DLMMet). At 14 days of age, chickens were inoculated orally with sporulated oocysts of Eimeria acervulina, Eimeria praecox, Eimeria maxima, and Eimeria mitis. Birds were killed by cervical dislocation 144 h post-inoculation(PI), and the jejunum was collected for biochemical and molecular analyses.Results: EC broilers had a 13% lower feed intake(FI), 37% lower body weight gain(BWG), and 39% higher feed conversion ratio(FCR) than UC broilers. Chickens fed the DL-Met diet had higher BWG(about 12% higher) and better FCR(about 12% lower) than chickens fed the NS diet. EC chickens had lower relative weight of the bursa of Fabricius(51.8%) and higher relative weights of the spleen and whole intestine(53.6% and 26.3%, respectively) than UC chickens. Eimeria spp. challenge led to an increase in the levels of oxidative substances, such as nitrite and thiobarbituric acid reactive substances(TBARS), in the jejunum of chickens 144 h PI. Among UC chickens, those fed the DL-Met diet had higher total antioxidant capacity(TAC) and lower catalase(CAT) and superoxide dismutase(SOD) activities. EC chickens that received the NS diet had higher carbonylated protein content(CP). This result was associated with their lower TAC and catalase activity. The lower TAC in EC chickens might have been due to reduced expression of catalase(CAT) and superoxide dismutase 1(SOD1) genes. Chickens fed the DL-Met and DLMMet diets had lower nitrite content. Eimeria spp. challenge suppressed neutral amino acid transporter 1(B0 AT1),peptide transporter 1(PEPT1), toll-like receptor 5(TLR5), interleukin 2(IL2), and occludin(OCLN) gene expression and enhanced cationic amino acid transporter 1(CAT-1) and interferon gamma(IFNG) gene expression. The highest PEPT1 expression level was observed in broilers fed the DL-MMet diet, and the lowest TLR5 expression level was found in broilers fed the NS diet.Conclusion: Our results show for the first time that supplementation with methionine as free amino acid or dipeptide helps protect the intestinal cells of broilers under Eimeria spp. challenge from the oxidative damage induced by free radicals, mainly through modulation of the antioxidant system. | Angélica de Souza Khatlab Ana Paula Del Vesco Adhemar Rodrigues de Oliveira Neto Roberta Pereira Miranda Fernandes Eliane Gasparino | 2019 | Journal of Animal Science and Biotechnology2019,10,4: | 6 |
| 20 | Upregulation of the APE1 and H2AX genes and miRNAs involved in DNA damage response and repair in gastric cancer显示文摘Gastric cancer remains one of the leading causes of cancer-related death worldwide,and most of the cases are associated with Helicobacter pylori infection.This bacterium promotes the production of reactive oxygen species(ROS),which cause DNA damage in gastric epithelial cells.In this study,we evaluated the expression of important genes involved in the recognition of DNA damage(ATM,ATR,and H2AX)and ROS-induced damage repair(APE1)and the expression of some miRNAs(miR-15a,miR-21,miR-24,miR-421 and miR-605)that target genes involved in the DNA damage response(DDR)in 31 fresh tissues of gastric cancer.Cytoscape v3.1.1 was used to construct the postulated miRNA:mRNA interaction network.Analysis performed by real-time quantitative PCR exhibited significantly increased levels of the APE1(RQ=2.55,p<0.0001)and H2AX(RQ=2.88,p=0.0002)genes beyond the miR-421 and miR-605 in the gastric cancer samples.In addition,significantly elevated levels of miR-21,miR-24 and miR-421 were observed in diffuse-type gastric cancer.Correlation analysis reinforced some of the gene:gene(ATM/ATR/H2AX)and miRNA:mRNA relationships obtained also with the interaction network.Thus,our findings show that tumor cells from gastric cancer presents deregulation of genes and miRNAs that participate in the recognition and repair of DNA damage,which could confer an advantage to cell survival and proliferation in the tumor microenvironment. | Fernanda S.Manoel-Caetano Ana Flávia T.Rossi Gabriela Calvet de Morais Fábio Eduardo Severino Ana Elizabete Silva | 2019 | Genes & Diseases2019,6,2: | 5 |