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1Alterations of glutathione S-transferase and matrix metalloproteinase-9 expressions are early events in esophageal carcinogenesis显示文摘AIM: To investigate the role of glutathione S-transferase (GST) and matrix metalloproteinase-9 (MMP-9) expres-sions in the development and progression of reflux es-ophagitis-Barrett’s metaplasia-dysplasia-adenocarcinoma sequence in the esophagus.METHODS: GST and MMP-9 expressions were analyzed in 51 paraffin-embedded tissue samples by immunohisto-chemistry including patients with reflux esophagitis (n = 7), Barrett’s metaplasia (n = 14), Barrett and esophagi-tis (n = 8), Barrett and dysplasia (n = 7), esophageal adenocarcinoma (n = 8) and a control group without any histological changes (n = 7). Immunostaining was determined semiquantitatively. Statistical analysis with one-way ANOVA, LSD test and correlation analysis were performed. P value of < 0.05 was considered significant.RESULTS: GST expression was significantly higher while MMP-9 expression was significantly lower in control group compared to Barrett’s metaplasia and the other groups. No major changes were observed between Bar-rett, esophagitis, and Barrett and concomitant esophagi-tis. Barrett and concomitant dysplasia, and adenocarci-noma revealed a significant lower expression of GST and higher levels of MMP-9 compared to all other groups. Adenocarcinoma showed almost no expression of GST and significantly higher levels of MMP-9 than Barrett and concomitant dysplasia. Alterations of GST and MMP-9 were inversely correlated (r = - 0.82).CONCLUSION: Decreased GST and increased ex-pression of MMP-9 in Barrett’s metaplasia-dysplasia-adenocarcinoma sequence as compared to normal tissue suggest their association with esophageal tumorigenesis. Loss of GST and gain of MMP-9 in Barrett with dyspla-sia compared to non-dysplastic metaplasia indicate that these alterations may be early events in carcinogenesis. Quantification of these parameters in Barrett’s esopha-gus might be useful to identify patients at higher risk for progression to cancer.Laszlo Herszenyi Istvan Hritz Istvan Pregun Ferenc Sipos Mark Juhasz Bela Molnar Zsolt Tulassay 2007World Journal of Gastroenterology2007,13,5:37
2经颅多普勒超声(TCD)的实践标准——第2部分:临床适应证和预期结果显示文摘引言:经颅多普勒(transcranial Doppler,TCD)已被证实为一种安全有效的生理学超声检查技术。尽管成像设备可以在结构影像的基础上显示颅内血流,但成像性双功能超声或非成像性TCD检查提供的最终结果是通过频谱波形来评价生理学血流参数。总结概要:多学科专家小组确定的TCD临床适应证包括:镰状细胞病、恼缺血、右向左分流(right—to—left shunt,RLS)、蛛网膜下腔出血、脑死亡以及围手术期或术中监测。TCD检查可常规应用于住院或门诊患者的一些临床实践活动:通过完整或部分TCD检查以检测正常、狭窄或闭塞的颅内血管和侧支循环来判断动脉闭塞位置,并进一步完善颈动脉超声或无创性血管造影结果;通过血管运动反应性检查来识别首发或复发性卒中的高危患者;通过栓子监测对脑栓塞进行实时检查、定位和量化;在怀疑反常性栓塞或考虑分流封堵术治疗的患者中进行RLS检测;对溶栓治疗进行监测以促进血管再通和检测再闭塞;在血管内支架置入术、颈动脉内膜切除术和心脏外科手术中进行监测以发现围手术期栓塞、血栓形成、低灌注或高灌注。结论:通过界定实践范围,这些标准将在TCD检查的申请、检查和评价过程中给开申请单的医生、发报告的医生以及第三方提供帮助。Andrei V. Alexandrov Michael A. Sloan Charles H. Tegeler David N. Newell Alan Lumsden Zsolt Garami Christopher R. Levy Lawrence K.S. Wong Colleen Douville Manfred Kaps 李海峰(译) 李宏(译) 李展秀(译) 2012国际脑血管病杂志2012,20,1:28
3Diagnostic and prognostic potential of tissue and circulating long non-coding RNAs in colorectal tumors显示文摘Long non-coding RNAs(lncRNAs)are members of the non-protein coding RNA family longer than 200 nucleotides.They participate in the regulation of gene and protein expression influencing apoptosis,cell proliferation and immune responses,thereby playing a critical role in the development and progression of various cancers,including colorectal cancer(CRC).As CRC is one of the most frequently diagnosed malignancies worldwide with high mortality,its screening and early detection are crucial,so the identification of disease-specific biomarkers is necessary.LncRNAs are promising candidates as they are involved in carcinogenesis,and certain lncRNAs(e.g.,CCAT1,CRNDE,CRCAL1-4)show altered expression in adenomas,making them potential early diagnostic markers.In addition to being useful as tissue-specific markers,analysis of circulating lncRNAs(e.g.,CCAT1,CCAT2,BLACAT1,CRNDE,NEAT1,UCA1)in peripheral blood offers the possibility to establish minimally invasive,liquid biopsy-based diagnostic tests.This review article aims to describe the origin,structure,and functions of lncRNAs and to discuss their contribution to CRC development.Moreover,our purpose is to summarise lncRNAs showing altered expression levels during tumor formation in both colon tissue and plasma/serum samples and to demonstrate their clinical implications as diagnostic or prognostic biomarkers for CRC.Orsolya Galamb Barbara K Barták Alexandra Kalmár Zsófia B Nagy Krisztina A Szigeti Zsolt Tulassay Peter Igaz Béla Molnár 2019World Journal of Gastroenterology2019,25,34:18
4Cetuximab plus FOLFOX6 or FOLFIRI in metastatic colorectal cancer: CECOG trial显示文摘AIM: To investigate efficacy and safety of cetuximab combined with two chemotherapy regimens in patients with unresectable metastatic colorectal cancer (mCRC). METHODS: Randomized patients received cetuximab with 5-fluorouracil (5-FU), folinic acid (FA) and oxaliplatin (FOLFOX) 6 (arm A, n = 74) or 5-FU, FA and irinotecan (FOLFIRI) (arm B, n = 77). KRAS mutation status was determined retrospectively in a subset of tumors (n = 117). RESULTS: No significant difference was found between treatment arms A and B in the progression-free survival (PFS) rate at 9 mo, 45% vs 34%; median PFS, 8.6 mo vs 8.3 mo [hazard ratio (HR) = 1.06]; overall response rate (ORR) 43% vs 45% [odds ratio (OR) = 0.93] and median overall survival (OS), 17.4 mo vs 18.9 mo (HR = 0.98). Patients with KRAS wild-type tumors demonstrated improved PFS (HR = 0.55, P = 0.0051), OS, (HR = 0.62, P = 0.0296) and ORR (53% vs 36%) and in arm A, improved PFS (HR = 0.49, P = 0.0196), OS (HR = 0.48, P = 0.0201) and ORR (56%vs 30%), compared with patients with KRAS mutated tumors. In arm B no significant differences were found in efficacy by KRAS mutation status. Treatment in arms A and B was generally well tolerated. CONCLUSION: This study confirms that combinations of cetuximab with FOLFOX6 or FOLFIRI are effective and significantly improve clinical outcome in KRAS wild-type compared with KRAS mutated mCRC.Janja Ocvirk Thomas Brodowicz Fritz Wrba Tudor E Ciuleanu Galina Kurteva Semir Beslija Ivan Koza Zsuzsanna Pápai Diethelm Messinger Ugur Yilmaz Zsolt Faluhelyi Suayib Yalcin Demetris Papamichael Miklós Wenczl Zrinka Mrsic-Krmpotic Einat Shacham-Shmueli Damir Vrbanec Regina Esser Werner Scheithauer Christoph C Zie-linski 2010World Journal of Gastroenterology2010,16,25:17
5Interleukins and interleukin receptors in rheumatoid arthritis: Research, diagnostics and clinical implications显示文摘Rheumatoid arthritis(RA) is an autoimmune disease, resulting in a chronic, systemic inflammatory disorder. It may affect many tissues and organs, but it primarily affects the flexible joints. In clinical practice patient care generates many questions about diagnosis, prognosis, and treatment. It is challenging for health care specialists to keep up to date with the medical literature. This review summarizes the pathogenesis, the polymorphisms of interleukin and interleukin genes and the standard available and possible future immunologictargets for RA treatment. The identification of diseaseassociated interleukin and interleukin receptor genes can provide precious insight into the genetic variations prior to disease onset in order to identify the pathways important for RA pathogenesis. The knowledge of the complex genetic background may prove useful for developing novel therapies and making personalized medicine based on the individual's genetics.Lili Magyari Dalma Varszegi Erzsebet Kovesdi Patricia Sarlos Bernadett Farago Andras Javorhazy Katalin Sumegi Zsolt Banfai Bela Melegh 2014World Journal of Orthopedics2014,5,4:17
6传统酸面团中优良菌种的筛选、鉴定及在苦荞麸皮馒头中的应用显示文摘为筛选传统酸面团中的有益微生物应用于馒头生产,选取河南周口、山西运城2个不同地区的传统酸面团,从中分离鉴定出优良菌株,并将优良菌种组合用于发酵苦荞麸皮馒头。结果显示:对酵母菌初筛,测定面团发酵力、产气能力、CO2失重量、生长曲线、p H值确定筛选出2株优良酵母菌YCY5-2和ZKY7-1;对乳酸菌初筛,测定产酸能力、产味能力及繁殖能力筛选出2株优良乳酸菌YCL7-3和ZKL10-4,经分子学鉴定分别为酿酒酵母(Saccharomyces cerevisiae)、毕赤酵母(Pichia kudriavzevii strain)、植物乳杆菌(Lactobacillus plantarum)和面包乳杆菌(Lactobacillus crustorum);经组合菌种(YCY5-2:ZKL10-4为2:1)发酵的苦荞麸皮馒头与安琪酵母苦荞麸皮馒头相比,质地性状和压缩张弛性方面组合菌组最佳,且感官评分组合菌组(82.2±2.3)高于安琪酵母组(77.1±1.4)。结果表明筛选出的优良菌种组合发酵的苦荞麸皮馒头品质更佳,为馒头的工业化生产提供了菌种支撑。王雪婷 廖钰婷 何瑞 李玉珠 Zsolt Zalán 杜木英 2017食品科技2017,42,2:17
7Changes of the cytokine profile in inflammatory bowel diseases显示文摘Cytokines are indispensable signals of the mucosaassociated immune system for maintaining normal gut homeostasis.An imbalance of their profile in favour of inflammation initiation may lead to disease states,such as that is observed in inflammatory bowel diseases(IBD).Although Crohn's disease(CD) is often described as a prototype of T-helper 1-type diseases,and ulcerative colitis(UC) is traditionally viewed as a T-helper 2-mediated condition,the classic paradigm,which categorises cytokines into pro-and anti-inflammatory groups,has recently been changed.The inflammation regulatory pathways may not be mutually exclusive as individual cytokines can have diverse and even opposing functions in various clinical and immunological settings.None the less there are many common immunological responses in IBD that are mediated by cytokines.Although they regulate and influence the development,course and recurrence of the inflammatory process,the concrete pathogenic role of these small signaling molecules is sometimes not unambiguous in the subtypes of the disease.Our aim is to review the current information about pro-and anti-inflammatory effects of traditionally studied and recently discovered cytokines in the pathogenesis of UC and CD.The better understanding of their production and functional activity may lead to the development of new therapeutic modalities.Gyrgyi Mzes Béla Molnár Zsolt Tulassay Ferenc Sipos 2012World Journal of Gastroenterology2012,18,41:16
8Genetic update on inflammatory factors in ulcerative colitis: Review of the current literature显示文摘Ulcerative colitis(UC) is one of the main types of inflammatory bowel disease, which is caused by dysregulated immune responses in genetically predisposed individuals. Several genetic factors, including interleukin and interleukin receptor gene polymorphisms and other inflammation-related genes play central role in mediating and modulating the inflammation in the human body, thereby these can be the main cause of development of the disease. It is clear these data are very important for understanding the base of the disease, especially in terms of clinical utility and validity, but summarized literature is exiguous for challenge health specialist that can used in the clinical practice nowadays. This review summarizes the current literature on inflammationrelated genetic polymorphisms which are associated with UC. We performed an electronic search of Pubmed Database among publications of the last 10 years, using the following medical subject heading terms: UC, ulcerative colitis, inflammation, genes, polymorphisms, and susceptibility.Patricia Sarlos Erzsebet Kovesdi Lili Magyari Zsolt Banfai Andras Szabo Andras Javorhazy Bela Melegh 2014World Journal of Gastrointestinal Pathophysiology2014,5,3:15
9Epithelial toll-like receptor 9 signaling in colorectal inflammation and cancer: Clinico-pathogenic aspects显示文摘Toll-like receptors (TLRs) recognize specific motifs which are frequently present in bacteria, fungi, prokaryotes and viruses. Amongst TLRs, TLR9 can be activated by such bacterial or viral DNA fragments, immunoglobulin-DNA complexes or synthetic oligonucleotides, which all contain unmethylated cytosineguanine nucleotide sequences (CpGs). Emerging data indicate that TLR9 signaling has a role in, and may influence, colorectal carcinogenesis and colonic inflammation. CpGs are classified into three groups according to their influence on both the antigen-specific humoraland cellular immunity, and the production of type 1 interferons and proinflammatory cytokines. TLR9 activation via CpGs may serve as a new therapeutic target for several cancerous and various inflammatory conditions. Due to its probable anti-cancer effects, the application possibilities of TLR9-signaling modulation may be extremely diverse even in colorectal tumors. In this review we aimed to summarize the current knowledge about TLR-signaling in the pathogenesis and therapy of inflammatory bowel diseases and colorectal cancer. Due to the species-specific differences in TLR9 expression, however, one must be careful in translating the animal model data into the human system, because of the differences between CpG-oligodeoxynucleotide-responsive cells. TLR9 agonist DNA-based immunomodulatory sequences could also represent a promising therapeutic alternative in systemic inflammatory conditions and chronic colonic inflammations as their side effects are not significant.István Fri Ferenc Sipos Tiana M Germann Alexandra Kalmár Zsolt Tulassay Béla Molnár Gyrgyi Mzes 2013World Journal of Gastroenterology2013,19,26:14
10Toll-like receptor 4 and NOD2/CARD15 mutations in Hungarian patients with Crohn's disease: Phenotype-genotype correlations显示文摘AIM: To determine common NOD2/CARD15 mutations and TLR4 D299G polymorphism in Hungarian patients with CD.METHODS: A total of 527 unrelated patients with CD (male/female: 265/262, age: 37.1 (SD 7.6) years) and 200 healthy subjects were included. DNA was screened for possible NOD2/CARD15 mutations by denaturing highperformance liquid chromatography (confirmed by direct sequencing). TLR4 D299G was tested by PCR-RFLP.RESULTS: NOD2/CARD15 mutations were found in 185patients (35.1%) and in 33 controls (16.5%, P<0.0001).SNP8/R702W (10.8% vs 6%, P = 0.02), SNP13/3020insC (19.4% vs 5%, P<0.0001) and exon4 R703C (2.1% vs 0%, P = 0.02) mutations were more frequent in CD, while the frequency of SNP12/G908R was not increased. The frequency of TLR4 D299G was not different (CD: 9.9% vscontrols: 12.0%). Variant NOD2/CARD15 allele was associated with an increased risk for CD (ORhet = 1.71,95%CI = 1.12-2.6, P= 0.0001, ORtwo-riskalleles = 25.2,95%CI = 4.37- , P<0.0001), early disease onset (carrier:26.4 years vs non-carrier: 29.8 years, P = 0.0006), ileal disease (81.9% vs 69.5%, OR = 1.99, 95%CI = 1.29-3.08,P = 0.02, presence of NOD2/CARD15 and TLR4: 86.7% vs64.8%), stricturing behavior (OR = 1.69, 95%CI = 1.13-2.55,P = 0.026) and increased need for resection (OR=1.71,95%CI: 1.13-2.62, P= 0.01), but not with duration, extraintestinal manifestations, familial disease or smoking. TLR4exhibited a modifier effect: age of onset in wt/TLR4 D299G carriers: 27.4 years vs NOD2mut/TLR D299G: 23 years (P= 0.06), in NOD2mut/wt: 26.7 years.CONCLUSION: These results confirm that variant NOD2/CARD15 (R702W, R703C and 3020insC) alleles are associated with earlier disease onset, ileal disease,stricturing disease behavior in Hungarian CD patients. In contrast, although the frequency of TLR4 D299G polymorphism was not different from controls, NOD2/TLR4mutation carriers tended to present at earlier age.Peter Laszlo Lakatos Laszlo Lakatos Ferenc Szalay Claudia Willheim-Polli Christoph (O|¨)sterreicher Zsolt Tulassay Tamas Molnar Walter Reinisch Janos Papp Gyula Mozsik Hungarian IBD Study Group Peter Ferenci 2005World Journal of Gastroenterology2005,11,10:14
11Helicobacter pylori infection: New pathogenetic and clinical aspects显示文摘Helicobacter pylori(H.pylori)infects more than half of the world’s human population,but only 1%to3%of infected people consequently develop gastric adenocarcinomas.The clinical outcome of the infection is determined by host genetic predisposition,bacterial virulence factors,and environmental factors.The association between H.pylori infection and chronic active gastritis,peptic ulcer disease,gastric cell carcinoma,and B cell mucosa-associated lymphoid tissue lymphoma has been well established.With the exception of unexplained iron deficiency anemia and idiopathic thrombocytopenic purpura,H.pylori infection has no proven role in extraintestinal diseases.On the other hand,there is data showing that H.pylori infection could be beneficial for some human diseases.The unpredictability of the long-term consequences of H.pylori infection and the economic challenge in eradicating it is why identification of high-risk individuals is crucial.Krisztina Hagymási Zsolt Tulassay 2014World Journal of Gastroenterology2014,20,21:13
12荧光假单胞菌ZX对采后锦橙绿霉病的防治及其抑菌机制显示文摘【目的】采后柑橘极易受指状青霉(Penicillium digitatum)侵染而发生严重的绿霉病腐烂,生物防治因具有安全、有效、环保等特点近年来备受关注。论文旨在研究荧光假单胞菌(Pseudomonas fluorescens)ZX对采后柑橘绿霉病的防治效果,揭示P.fluorescensZX对P.digitatum可能存在的作用机制。【方法】以'北碚447'锦橙果实为试材,先分别接种20μL拮抗菌培养液、滤液(培养液离心后,上清经0.22μm滤膜过滤)、菌悬液(培养液离心后,菌体用无菌水反复洗涤并用无菌水重悬)和热杀死液(培养液高温高压灭菌),2 h后接种20μL P. digitatum孢子悬浮液(1×10~4spores/m L),所有果实于20oC、90%相对湿度环境下恒温恒湿培养8 d后,测定果实的发病率和病斑直径;制备柑橘皮培养基,进行平板抑菌试验,探索P. fluorescens ZX对P. digitatum孢子发芽情况的影响;采用两板对扣法和生物熏蒸法研究P.fluorescensZX挥发性次级代谢产物的抑菌作用;利用插入式细胞培养皿等分析P.fluorescensZX和P.digitatum之间竞争的营养物质;同时,测定P.fluorescensZX的生长曲线,利用结晶紫染色法评估P. fluorescens ZX的生物膜形成能力。【结果】P. fluorescens ZX不同处理液之间对采后锦橙绿霉病的作用效果差异显著,菌悬液抑菌效果最好,经菌悬液处理的果实,发病率和病斑直径分别仅为40.83%和1.78 cm;不论是在柑橘皮固体培养基上对峙培养还是在液体培养基中混合培养,菌悬液和原液的作用效果较好,固体平板上,相对抑制率达到了35%–45%,液体培养基中,P. digitatum孢子12 h后的发芽率不超过27%;P. fluorescens ZX产生的挥发性物质具有抑菌作用,经P. fluorescensZX熏蒸处理的锦橙果实,发病率和病斑直径都显著降低;营养竞争试验结果表明,P. fluorescens ZX能更快速有效地消耗柑橘皮培养基中的营养,并和P. digitatum竞争葡萄糖、果糖、蔗糖、天冬氨酸、苏氨酸、丝氨酸、亮氨酸、精氨酸和脯氨酸等营养物质;同时,P. fluorescens ZX生命力强,培养4 h后即进入对数生长期,约24 h后形成成熟的生物膜。【结论】P. fluorescens ZX可能通过抑制P. digitatum孢子发芽、营养与空间竞争、形成生物膜、产生抑菌物质等方式抑制P.digitatum的生长繁殖,有效防治采后锦橙绿霉病。王智荣 梅小飞 杜木英 江孟遥 张洪新 汪开拓 Zsolt Zalán Ferenc Hegyi 阚建全 2019微生物学报2019,59,5:12
13Relation of the IGF/IGF1R system to autophagy in colitis and colorectal cancer显示文摘Metabolic syndrome(Met S), as a chronic inflammatory disorder has a potential role in the development of inflammatory and cancerous complications of the colonic tissue. The interaction of DNA damage and inflammation is affected by the insulin-like growth factor 1 receptor(IGF1 R) signaling pathway. The IGF1 R pathway has been reported to regulate autophagy, as well, but sometimes through a bidirectional context. Targeting the IGF1 R-autophagy crosstalk could represent a promising strategy for the development of new antiinflammatory and anticancer therapies, and may help for subjects suffering from Met S who are at increased risk of colorectal cancer. However, therapeutic responses to targeted therapies are often shortlived, since a signaling crosstalk of IGF1 R with other receptor tyrosine kinases or autophagy exists, leading to acquired cellular resistance to therapy. From a pharmacological point of view, it is attractive to speculate that synergistic benefits could be achieved by inhibition of one of the key effectors of the IGF1 R pathway, in parallel with the pharmacological stimulation of the autophagy machinery, but cautiousness is also required, because pharmacologic IGF1 R modulation can initiate additional, sometimes unfavorable biologic effects.Ferenc Sipos Hajnal Székely Imre Dániel Kis Zsolt Tulassay Gyorgyi Muzes 2017World Journal of Gastroenterology2017,23,46:9
14Contribution of TLR signaling to the pathogenesis of colitisassociated cancer in inflammatory bowel disease显示文摘In the intestine a balance between proinflammatory and repair signals of the immune system is essential for the maintenance of intestinal homeostasis. The innate immunity ensures a primary host response to microbial invasion, which induces an inflammatory process to localize the infection and prevent systemic dissemination of pathogens. The key elements of this process are the germline encoded pattern recognition receptors inclu-ding Toll-like receptors(TLRs). If pathogens cannot be eliminated, they may elicit chronic inflammation, which may be partly mediated via TLRs. Additionally, chronic inflammation has long been suggested to trigger tissue tumorous transformation. Inflammation, the seventh hallmark of cancer, may affect all phases of tumor development, and evade the immune system. Inflammation acts as a cellular stressor and may trigger DNA damage or genetic instability. Furthermore, chronic inflammation can provoke genetic mutations and epigenetic mechanisms that promote malignant cell transformation. Colorectal cancers in inflammatory bowel disease patients are considered typical examples of inflammation-related cancers. Although data regarding the role of TLRs in the pathomechanism of cancer-as-sociated colitis are rather conflicting, functionally these molecules can be classified as 'largely antitumorigenic' and 'largely pro-tumorigenic' with the caveat that the underlying signaling pathways are mainly context(i.e., organ-, tissue-, cell-) and ligand-dependent.Ferenc Sipos István Fri Miklós Constantinovits Zsolt Tulassay Gyrgyi Mzes 2014World Journal of Gastroenterology2014,20,36:9
15Systematic review of the old and new concepts in the epithelial-mesenchymal transition of colorectal cancer显示文摘Epithelial-to-mesenchymal transition(EMT) is defined as the transformation of an epithelial cell into a spindle cell with the loss of membrane E-cadherin expression and the gain of mesenchymal markers positivity. In the field of colorectal cancer(CRC), first data about EMT was published in 1995 and more than 400 papers had been written up to March 2016. Most of them are focused on the molecular pathways and experimentally-proved chemoresistance. In the present article, an update in the field of EMT in CRC based on the review of the literature and personal experience of the authors is presented. The information about the molecular and immunohistochemical(IHC) particularities of these processes and their possible role in the prognosis of CRC were also up-dated. This article focuses on the IHC quantification of the EMT, the immunoprofile of tumor buds and on the relation between EMT, angiogenesis, and stem cells activation. The EMT-induced chemoresistance vs chemotherapyor radiotherapy-induced EMT and cellular senescence was also synthesized for both conventional and targeted therapy. As a future perspective, the EMTangiogenesis-stemness link could be used as a possible valuable parameter for clinical follow-up and targeted therapeutic oncologic management of patients with CRC. Association of dexamethasone and angiotensin converting enzyme inhibitors combined with conventional chemotherapies could have clinical benefits in patients with CRC. The main conclusion is that, although many studies have been published, the EMT features are still incompletely elucidated and newly discovered EMT markers provide confusing data in understanding this complicated process, which might have significant clinical impact.Simona Gurzu Camelia Silveanu Annamaria Fetyko Vlad Butiurca Zsolt Kovacs Ioan Jung 2016World Journal of Gastroenterology2016,22,30:8
16运动与毒物兴奋效应显示文摘毒物兴奋效应(Hormesis)是当今毒理学界争论的热点问题,又称为"低剂量有毒物质的刺激作用".目前认为毒物兴奋效应是指化学物在低于不可见的有害作用水平(NOXEL)以下的剂量具有兴奋或刺激的作用,与高剂量的作用相反,一般有益于受试的生物体.其曲线特征指机体在应答诸如化学试剂、毒素或放射性等损伤时所表现出的一种钟形曲线的反应.赵丽 熊开宇 王正珍 Zsolt Radak 2011中国老年学杂志2011,31,11:8
17Long-term omeprazole and esomeprazole treatment does not significantly increase gastric epithelial cell proliferation and epithelial growth factor receptor expression and has no effect on apoptosis and p53 expression显示文摘AIM: To study the effect of proton pump inhibitor (PPI)treatment on patients with reflux esophagitis and its in vivo effect on apoptosis, p53- and epidermal growth factor receptor (EGFR) expression.METHODS: After informed consent was obtained, gastric biopsies of the antrum were taken from patients with reflux oesophagitis prior to and after 6 mo of 20 mg omeprazole (n = 14) or 40 mg esomeprazole (n = 12) therapy.Patients did not take any other medications known to affect the gastric mucosa. All patients were Helicobacter pylori negative as confirmed by rapid urease test and histology,respectively. Cell proliferation, apoptosis, EGFR, and p53expression were measured by immunohistochemical techniques. At least 600 glandular epithelial cells were encountered and results were expressed as percentage of total cells counted. Was considered statistically significant.RESULTS: Although there was a trend towards increase of cell proliferation and EGFR expression both in omeprazole and esomeprazole treated group, the difference was not statistically significant. Neither apoptosis nor p53 expression was affected.CONCLUSION: Long-term PPI treatment does not significantly increase gastric epithelial cell proliferation and EGFR expression and has no effect on apoptosis and p53 expression.Istvan Hritz Laszlo Herszenyi Bela Molnar Zsolt Tulassay Laszlo Pronai 2005World Journal of Gastroenterology2005,11,30:7
18复合菌发酵苦荞麸皮馒头的工艺优化显示文摘选取从酸面团筛选的酵母YCY5-2,ZKY7-1及乳酸菌YCL7-3,ZKL10-4进行组合发酵苦荞麸皮馒头,以馒头黄酮含量和感官评定分数作为指标,筛选出发酵苦荞麸皮馒头的最适菌种组合。实验采用响应面法对菌株比例,菌株接种量,发酵时间和醒发时间进行了优化。结果表明:最佳组合菌种为YCY5-2和ZKL10-4,苦荞麸皮添加量为20%,最佳工艺条件为YCY5-2∶ZKL10-4=2∶1,菌种添加量为3%,发酵时间为5 h、醒发时间40 min。此条件下苦荞麸皮馒头黄酮含量为(211.33±1.34)mg Rutin/100 g,感官评分为(82.2±2.30)。与安琪酵母发酵的苦荞麸皮馒头的黄酮含量((189.70±3.66 mg)Rutin/100 g),感官评价(77.1±1.4)及质构相比可知,复合菌馒头的功能和品质均比安琪酵母的好。结论:复合菌发酵的苦荞麸皮馒头具有开发利用的价值。何瑞 廖钰婷 王雪婷 李玉珠 Zsolt Zalan 杜木英 2017食品工业科技2017,38,5:7
19Aging related methylation influences the gene expression of key control genes in colorectal cancer and adenoma显示文摘AIM To analyze colorectal carcinogenesis and age-related DNA methylation alterations of gene sequences associated with epigenetic clock CpG sites. METHODS In silico DNA methylation analysis of 353 epigenetic clock Cp G sites published by Steve Horvath was performed using methylation array data for a set of 123 colonic tissue samples [64 colorectal cancer(CRC), 42 adenoma, 17 normal; GEO accession number: GSE48684]. Among the differentially methylated agerelated genes, secreted frizzled related protein 1(SFRP1) promoter methylation was further investigated in colonic tissue from 8 healthy adults, 19 normal children, 20 adenoma and 8 CRC patients using bisulfite-specific PCR followed by methylation-specific high resolution melting(MS-HRM) analysis. m RNA expression of age-related 'epigenetic clock' genes was studied using Affymetrix HGU133 Plus2.0 whole transcriptome data of 153 colonic biopsy samples(49 healthy adult, 49 adenoma, 49 CRC, 6 healthy children)(GEO accession numbers: GSE37364, GSE10714, GSE4183, GSE37267). Whole promoter methylation analysis of genes showing inverse DNA methylationgene expression data was performed on 30 colonic samples using methyl capture sequencing.RESULTS Fifty-seven age-related Cp G sites including hypermethylated PPP1R16 B, SFRP1, SYNE1 and hypomethylated MGP, PIPOX were differentially methylated between CRC and normal tissues(P < 0.05, ?β≥ 10%). In the adenoma vs normal comparison, 70 CpG sites differed significantly, including hypermethylated DKK3, SDC2, SFRP1, SYNE1 and hypomethylated CEMIP, SPATA18(P < 0.05, ?β≥ 10%). In MS-HRM analysis, the SFRP1 promoter region was significantly hypermethylated in CRC(55.0% ± 8.4 %) and adenoma tissue samples(49.9% ± 18.1%) compared to normal adult(5.2% ± 2.7%) and young(2.2% ± 0.7%) colonic tissue(P < 0.0001). DNA methylation of SFRP1 promoter was slightly, but significantly increased in healthy adults compared to normal young samples(P < 0.02). This correlated with significantly increased SFRP1 m RNA levels in children compared to normal adult samples(P < 0.05). In CRC tissue the mR NA expression of 117 agerelated genes were changed, while in adenoma samples 102 genes showed differential expression compared with normal colonic tissue(P < 0.05, logF C > 0.5). The change of expression for several genes including SYNE1, CLEC3 B, LTBP3 and SFRP1, followed the same pattern in aging and carcinogenesis, though not for all genes(e.g., MGP). CONCLUSION Several age-related DNA methylation alterations can be observed during CRC development and progression affecting the m RNA expression of certain CRC- and adenoma-related key control genes.Orsolya Galamb Alexandra Kalmár Barbara Kinga Barták árpád V Patai Katalin Leiszter Bálint Péterfia Barnabás Wichmann Gábor Valcz Gábor Veres Zsolt Tulassay Béla Molnár 2016World Journal of Gastroenterology2016,22,47:7
20细支气管肺泡癌^18F—FDG PET/CT显像的代谢和形态特征显示文摘目的分析细支气管肺泡癌(BAC)在^18F-脱氧葡萄糖(FDG)PET/CT图像中的代谢和形态结构特征,并与非细支气管肺泡型腺癌(non—BAC AC)的显像结果进行比较,探讨PET/CT在BAC诊断及鉴别诊断中的价值。方法回顾性分析经病理检查确诊的32例BAC及55例non—BAC AC的FDG PET/CT显像资料。测量病灶最大标准摄取值(SUVmax),分析病灶位置、形态及边界、密度分布及其他典型CT结构征象。统计分析比较2组的平均SUVmax,评价与肿瘤分型有关的CT征象,比较单独PET、CT及PET和CT联合诊断的准确性。采用SPSS12.0软件对数据行t检验、McNemar检验、Fisher精确检验等。结果BAC组共47个病灶,non—BACAC组共63个病灶,组间SUVmax差异有统计学意义(1.51±0.17与6.28±3.04,t=-10.374,P〈0.0001)。BAC组纯磨玻璃密度影(45%的病灶,21/47)是相关的CT征象(Fisher精确检验,P〈0.0001)。结合PET代谢和CT解剖结构特征的联合诊断准确性与单独PET或CT对比,差异均有统计学意义(P=0.001和0.039),诊断准确性分别为88%(28/32)、47%(15/32)和66%(21/32)。结论理解FDG PET/CT显像中BAC的代谢和形态结构特征,有利于提高诊断准确性。如动态观察中呈持续的CT磨玻璃密度影,即使低FDG摄取,也要考虑BAC可能。高永举 Zsolt Szabo 2009中华核医学杂志2009,29,4:7
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