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| 1 | Helicobacter pylori infection as a cause of iron deficiency anaemia of unknown origin显示文摘AIM: To assess the aetiological role of Helicobacter pylori (H. pylori) infection in adult patients with ironrefractory or iron-dependent anaemia of previously unknown origin. METHODS: Consecutive patients with chronic irondeficient anaemia (IDA) with H. pylori infection and a negative standard work-up were prospectively evaluated. All of them had either iron refractoriness or iron dependency. Response to H. pylori eradication was assessed at 6 and 12 mo from follow-up. H. pylori infection was considered to be the cause of the anaemia when a complete anaemia resolution without iron supplements was observed after eradication. RESULTS: H. pylori was eradicated in 88 of the 89 patients. In the non-eradicated patient the four eradicating regimens failed. There were violations of protocol in 4 patients, for whom it was not possible to ascertain the cause of the anaemia. Thus, 84 H. pylori eradicated patients (10 men; 74 women) were available to assess the effect of eradication on IDA. H. pylori infection was considered to be the aetiology of IDA in 32 patients (38.1%; 95%CI: 28.4%-48.8%). This was more frequent in men/postmenopausal women than in premenopausal women (75% vs 23.3%; P < 0.0001) with an OR of 9.8 (95%CI: 3.3-29.6). In these patients, anaemia resolution occurred in the first follow-up visit at 6 mo, and no anaemia or iron deficiency relapse was observed after a mean follow-up of 21 ± 2 mo. CONCLUSION: Gastric H. pylori infection is a frequent cause of iron-refractory or iron-dependent anaemia of previously unknown origin in adult patients. | Helena Monzón Montserrat Forné Maria Esteve Mercé Rosinach Carme Loras Jorge C Espinós Josep M Viver Antonio Salas Fernando Fernández-Baares | 2013 | World Journal of Gastroenterology2013，19，26： | 13 |
| 2 | A short review of malabsorption and anemia显示文摘Anemia is a frequent finding in most diseases which cause malabsorption. The most frequent etiology is the combination of iron and vitamin B12 deficiency. Celiac disease is frequently diagnosed in patients referred for evaluation of iron deficiency anemia (IDA), being reported in 1.8%-14.6% of patients. Therefore, duodenal biopsies should be taken during endoscopy if no obvious cause of iron defi ciency (ID) can be found. Cobalamin defi ciency occurs frequently among elderly patients, but it is often unrecognized because the clinical manifestations are subtle; it is caused primarily by food-cobalamin malabsorption and pernicious anemia. The classic treatment of cobalamin deficiency has been parenteral administration of the vitamin. Recent data suggest that alternative routes of cobalamin administration (oral and nasal) may be useful in some cases. Anemia is a frequent complication of gastrectomy, and has been often described after bariatric surgery. It has been shown that banding procedures which maintain digestive continuity with the antrum and duodenum are associated with low rates of ID. Helicobacter pylori (H pylori) infection may be considered as a risk factor for IDA, mainly in groups with high demands for iron, such as some children and adolescents. Further controlled trials are needed before making solid recommendations about H pylori eradication in these cases. | Fernando Fernández-Baares Helena Monzón Montserrat Forné | 2009 | World Journal of Gastroenterology2009，15，37： | 6 |
| 3 | Helicobacter pylori and EBV in gastric carcinomas:Methylation status and microsatellite instability显示文摘AIM:To verify the methylation status of CDH1, DAPK, COX2, hMLH1 and CDKN2A genes and to evaluate their association with Helicobacter pylori (H. pylori)-cagA+ and Epstein Barr virus (EBV) infections in gastric adenocarcinomas.METHODS: Methylation-specific PCR (MSP) assay was performed in 89 primary gastric carcinomas (intestinal and diffuse types). Microsatellite instability (MSI) analysis was performed using the BAT26 primer set and PCR products were analyzed with the ABI PRISM 3100 Genetic Analyzer using Genescan 3.7 software (Applied Biosystems). Detection of H. pylori and genotyping were performed by PCR, using specifi c primers for ureaseC and cagA genes. The presence of EBV was assessed by in situ hybridization. Statistical analyses were performed using the χ2 or Fisher's exact test.RESULTS: The most frequent hypermethylated gene was COX-2 (63.5%) followed by DAPK (55.7%), CDH1 (51%), CDKN2A (36%) and hMLH1 (30.3%). Intestinal and diffuse adenocarcinomas showed different methylation profiles and there was an association between methylation of E-CDH1 and H. pylori-cagA+ in the intestinal adenocarcinoma type. MSI was correlated with hMLH1 methylation. There was an inverse correlation between DAPK hypermethylation and MSI.CONCLUSION: We found a strong association between CDH1 methylation and H. pylori-cagA+ in intestinal-type gastric cancer, association of MSI and better prognosis and an heterogeneous COX-2 overexpression. | Adriana Camargo Ferrasi Nídia Alice Pinheiro Silvia Helena Barem Rabenhorst Otávia Luisa Caballero Maria Aparecida Marchesan Rodrigues Fabrício de Carvalho Celso Vieira de Souza Leite Marcia Valéria Pitombeira Ferreira Marcos Aurélio Pessoa Barros Maria Inês de Moura Campos Pardini | 2010 | World Journal of Gastroenterology2010，16，3： | 6 |
| 4 | 通过手术导致的重量损失由胃绕过在疾病的肥胖的病人改进非含酒精的脂肪肝疾病显示文摘 AIM:To evaluate the effects of surgical weight loss(Roux-en-Y gastric bypass with a modified Fobi-Capella technique) on non alcoholic fatty liver disease in obese patients.METHODS:A group of 26 morbidly obese patients aged 45 ± 2 years and with a body mass index > 40 kg/m 2 who underwent open surgical weight loss operations had paired liver biopsies,the first at surgery and the second after 16 ± 3 mo of weight loss.Biopsies were evaluated and compared in a blinded fashion.The presence of metabolic syndrome,anthropometric and biochemical variables were also assessed at baseline and at the time of the second biopsy.RESULTS:Percentage of excess weight loss was 72.1% ± 6.6%.There was a reduction in prevalence of metabolic syndrome from 57.7%(15 patients) to 7.7%(2 patients)(P < 0.001).Any significance difference was observed in aspartate aminotransferase or alanine aminotransferase between pre and postsurgery.There were improvements in steatosis(P < 0.001),lobular(P < 0.001) and portal(P < 0.05) inflammation and fibrosis(P < 0.001) at the second biopsy.There were 25(96.1%) patients with non alcoholic steatohepatitis(NASH) in their index biopsy and only four(15.3%) of the repeat biopsies fulfilled the criteria for NASH.The persistence of fibrosis(F > 1) was present in five patients at second biopsy.Steatosis and fibrosis at surgery were predictors of significant fibrosis postsurgery.CONCLUSION:Restrictive mildly malabsorptive surgery provides significant weight loss,resolution of metabolic syndrome and associated abnormal liver histological features in most obese patients. | Víctor Vargas Helena Allende Albert Lecube Maria Teresa Salcedo Juan A Baena-Fustegueras José M Fort Joaquín Rivero Roser Ferrer Roberto Catalán Eva Pardina Santiago Ramón y Cajal Jaime Guardia Julia Peinado-Onsurbe | 2012 | World Journal of Hepatology2012，4，12： | 6 |
| 5 | Th1 cytokines promote T-cell binding to antigen-presenting cells via enhanced hyaluronan production and accumulation at the immune synapse显示文摘Hyaluronan(HA)production by dendritic cells(DCs)is known to promote antigen presentation and to augment T-cell activation and proliferation.We hypothesized that pericellular HA can function as intercellular‘glue’directly mediating T cell–DC binding.Using primary human cells,we observed HA-dependent binding between T cells and DCs,which was abrogated upon pre-treatment of the DCs with 4-methylumbelliferone(4-MU),an agent which blocks HA synthesis.Furthermore,T cells regulate HA production by DCs via T cell-derived cytokines in a T helper(Th)subset-specific manner,as demonstrated by the observation that cell-culture supernatants from Th1 but not Th2 clones promote HA production.Similar effects were seen upon the addition of exogenous Th1 cytokines,IL-2,interferon c(IFN-c)and tumor necrosis factor a(TNF-a).The critical factors which determined the extent of DC–T cell binding in this system were the nature of the pre-treatment the DCs received and their capacity to synthesize HA,as T-cell clones which were pre-treated with monensin,added to block cytokine secretion,bound equivalently irrespective of their Th subset.These data support the existence of a feedforward loop wherein T-cell cytokines influence DC production of HA,which in turn affects the extent of DC–T cell binding.We also document the presence of focal deposits of HA at the immune synapse between T-cells and APC and on dendritic processes thought to be important in antigen presentation.These data point to a pivotal role for HA in DC–T cell interactions at the IS. | Paul L Bollyky Stephen P Evanko Rebecca P Wu Susan Potter-Perigo S Alice Long Brian Kinsella Helena Reijonen Kelly Guebtner Brandon Teng Christina K Chan Kathy R Braun John A Gebe Gerald T Nepom Thomas N Wight | 2010 | Cellular & Molecular Immunology2010，7，3： | 3 |
| 6 | Contrasted effect of biochar and earthworms on rice growth and resource allocation in different soils显示文摘 | Diana Noguera Marco Rondón Kam-Rigne Laossi Valerio Hoyos Patrick Lavelle Maria Helena Cruz de Carvalho Sébastien Barot | 2010 | Soil Biology and Biochemistry2010，，7： | 2 |
| 7 | Are Therapeutic Human Mesenchymal Stromal Cells Compatible with Human Blood?显示文摘 | Guido Moll Ida Rasmusson‐Duprez Lena von Bahr Anne‐Marie Connolly‐Andersen Graciela Elgue Lillemor Funke Osama A. Hamad Helena L?nnies Peetra U. Magnusson Javier Sanchez Yuji Teramura Kristina Nilsson‐Ekdahl Olle Ringdén Olle Korsgren Bo Nilsson Katarina | 2012 | STEM CELLS2012，，7： | 1 |
| 8 | Enzymatic characterization of lipid2based drug delivery systems显示文摘 | Helena L W Flemming S N Mattias B | 2005 | Int J Pharm2005，298，32： | 1 |
| 9 | Nursing Students' Ethical Deci- sion-making: a Review of the Literature显示文摘 | Olive H N Helena L K | 2007 | Nurse Educ To- day2007，27，7： | 1 |
| 10 | Seroprevalence of Toxoplasma gondii and Encephalitozoon cuniculi in rabbits from different farming systems显示文摘 | Helena N Jana J Edita J | 2014 | Vet Parasitol2014，204，： | 1 |
| 11 | Enzymatic characterization of lipid-based drug delivery systems显示文摘 | Helena L W Flemming S N Mattias B | 2005 | Int J Pharm2005，298，2： | 1 |
| 12 | Changes occurring in phenoliccontent,tocopherol composition and oxidative stability of Camelinasativa oil during storage显示文摘 | HELENA A BOJAN B VOJKO N | 2007 | Food Chemistry2007，104，3： | 1 |
| 13 | Subcortical ischaemic vascular dementia显示文摘 | Gustavo C Román Timo Erkinjuntti Anders Wallin Leonardo Pantoni Helena C Chui | 2002 | Lancet Neurology2002，，7： | 1 |
| 14 | Evolution of Bacillus thuringiensis Cry toxins insecticidal activity显示文摘 | Alejandra Bravo Isabel Gómez Helena Porta Blanca Ines García‐Gómez Claudia Rodriguez‐Almazan Liliana Pardo Mario Soberón | 2012 | Microbial Biotechnology2012，，1： | 1 |
| 15 | Subcortical ischaemic vascular dementia显示文摘 | Gustavo C Román Timo Erkinjuntti Anders Wallin Leonardo Pantoni Helena C Chui | 2002 | Lancet Neurology2002，，： | 1 |
| 16 | TO BE OR NOT TO BE A LIVING DONOR: Questionnaire to Parents of Children Who Have Undergone Renal Transplantation1显示文摘 | Helena M.E. K?rrfelt Ulla B. Berg Frank I.E. Lindblad Gunnar E. Tydén | 1998 | Transplantation1998，，7： | 1 |
| 17 | Novel cerium (Ⅳ) heteropolyoxotungstate containing two types of lacu- nary Keggin anions显示文摘 | FILIPA L S FILIPE A A P HELENA I S N | 2004 | Chem Commun2004，，： | 1 |
| 18 | Enzyme production by recombinant Trichoderma reesei strains 显示文摘 | UUSITALO J M HELENA N K M HARKKI A M | 1991 | Journal of Biotech- nology1991，17，1： | 1 |
| 19 | Changes occurring in phenolic content, tocopherol composition and oxidative stability of Camelina sativa oil during storage 显示文摘 | Helena A Bojan B Vojko N | 2007 | Food Chemistry2007，104，： | 1 |
| 20 | Influence of the microstructure in the collapse of a residual clayey tropical soil显示文摘 | Nelcí Helena Maia Gutierrez Maria Teresa Nóbrega Orencio Monje Vilar | 2009 | Bulletin of Engineering Geology and the Environment2009，，1： | 1 |
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