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‣ Methylation status of CDH1 gene in samples of gastric mucous from brazilian patients with chronic gastritis infected by Helicobacter pylori

Kague, Erika; Thomazini, Cristiane Melissa; Pardini, Maria Inês de Campo Moura; Carvalho, Fabrício de; Leite, Celso Vieira; Pinheiro, Nídia Alice
Fonte: Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia (IBEPEGE); Colégio Brasileiro de Cirurgia Digestiva (CBCD); Sociedade Brasileira de Motilidade Digestiva (SBMD); Federação Brasileira de Gastroenterologia (FBG); Sociedade Brasileira de Hepatologia (SBH); Sociedade Brasileira de Endoscopia Digestiva (SOBED) Publicador: Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia (IBEPEGE); Colégio Brasileiro de Cirurgia Digestiva (CBCD); Sociedade Brasileira de Motilidade Digestiva (SBMD); Federação Brasileira de Gastroenterologia (FBG); Sociedade Brasileira de Hepatologia (SBH); Sociedade Brasileira de Endoscopia Digestiva (SOBED)
Tipo: Artigo de Revista Científica Formato: 07/dez
Português
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CONTEXTO:O câncer gástrico é uma das principais neoplasias que causam o óbito no Brasil e no mundo. Helicobacter pylori é um carcinógeno do tipo I relacionado à gastrite crônica. Diferenças no grau de virulência de suas cepas levam a maior risco de desenvolvimento de doenças gástricas. A metilação de ilhas CpGs está envolvida com o processo de tumorigênese em diferentes tipos de câncer. CDH1 é um gene supressor tumoral que, quando inativado, pode aumentar as chances de metástase. A metilação deste gene em estágios precoces da carcinogênese gástrica ainda não é totalmente compreendida. OBJETIVO: Investigar o padrão de metilação do gene CDH1 em amostras de gastrites crônicas e correlacionar com a presença do H. pylori. MÉTODOS: Foram usadas 60 biopsias de mucosas gástricas. A detecção de H. pylori foi realizada por PCR para o gene da urease C e a genotipagem com PCR para os genes cagA e vacA (região s e m). O padrão de metilação do gene CDH1 foi analisado usando a técnica de PCR e específica para a metilação e sequenciamento direto dos produtos de PCR. RESULTADOS: A bactéria H. pylori foi detectada em 90% das amostras de gastrites crônicas; destas, 33% portavam o gene cagA e 100% vacA s1. O genótipo vacA s2/m1 não foi detectado nas amostras analisadas. Metilação de CDH1 foi detectada em 63...

‣ Polymorphisms of DNA repair genes XRCC1 and XRCC3, interaction with environmental exposure and risk of chronic gastritis and gastric cancer

Duarte, Marcia Cristina; Colombo, Jucimara; Baptista Rossit, Andrea Regina; Caetano, Alaor; Borim, Aldenis Albaneze; Wornrath, Durval; Silva, Ana Elizabete
Fonte: Baishideng Publ Grp Co Ltd Publicador: Baishideng Publ Grp Co Ltd
Tipo: Artigo de Revista Científica Formato: 6593-6600
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); AIM: To evaluate the association between polymorphisms XRCC1 Arg194Trp and Arg399Gln and XRCC3 Thr241Met and the risk for chronic gastritis and gastric cancer, in a Southeastern Brazilian population.METHODS: Genotyping by PCR-RFLP was carried out on 202 patients with chronic gastritis (CG) and 160 patients with gastric cancer (GC), matched to 202 (C1) and 150 (C2) controls, respectively.RESULTS: No differences were observed among the studied groups with regard to the genotype distribution of XRCC1 codons 194 and 399 and of XRCC3 codon 241. However, the combined analyses of the three variant alleles (194Trp, 399Gln and 241Met) showed an increased risk for chronic gastritis when compared to the GC group. Moreover, an interaction between the polymorphic alleles and demographic and environmental factors was observed in the CG and GC groups. XRCC1 194Trp was associated with smoking in the CG group, while the variant alleles XRCC1 399Gln and XRCC3 241Met were related with gender, smoking, drinking and H pylori infection in the CG and GC groups.CONCLUSION: Our results showed no evidence of a rela-tionship between the polymorphisms XRCC1 Arg194Trp and Arg399Gln and XRCC3 Thr241Met and the risk of chronic gastritis and gastric cancer in the Brazilian population...

‣ Polymorphisms of DNA repair genes XRCC1 and XRCC3, interaction with environmental exposure and risk of chronic gastritis and grastic cancer

Duarte, Márcia Cristina; Colombo, Jucimara; Rossit, Andrea Regina Baptista; Caetano, Alaor; Borim, Aldenis Albaneze; Wornrath, Durval; Silva, Ana Elizabete
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 6593-6600
Português
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Aim: To evaluate the association between polymorphisms XRCC1 Arg194Trp and Arg399Gln and XRCC3 Thr241Met and the risk for chronic gastritis and gastric cancer, in a Southeastern Brazilian population. Methods: Genotyping by PCR-RFLP was carried out on 202 patients with chronic gastritis (CG) and 160 patients with gastric cancer (GC), matched to 202 (C1) and 150 (C2) controls, respectively. Results: No differences were observed among the studied groups with regard to the genotype distribution of XRCC1 codons 194 and 399 and of XRCC3 codon 241. However, the combined analyses of the three variant alleles (194Trp, 399Gln and 241Met) showed an increased risk for chronic gastritis when compared to the GC group. Moreover, an interaction between the polymorphic alleles and demographic and environmental factors was observed in the CG and GC groups. XRCC1 194Trp was associated with smoking in the CG group, while the variant alleles XRCC1 399Gln and XRCC3 241Met were related with gender, smoking, drinking and H pylori infection in the CG and GC groups. Conclusion: Our results showed no evidence of a rela-tionship between the polymorphisms XRCC1 Arg194Trp and Arg399Gln and XRCC3 Thr241Met and the risk of chronic gastritis and gastric cancer in the Brazilian population...

‣ Genetic alterations in benign lesions: Chronic gastritis and gastric ulcer

Gobbo César, Ana Cristina; de Freitas Calmon, Marília; Cury, Patrícia Maluf; Caetano, Alaor; Borim, Aldenis Albaneze; Silva, Ana Elizabete
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 625-629
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Aim: To investigate the occurrence of chromosome 3, 7, 8, 9, and 17 aneuploidies, TP53 gene deletion and p53 protein expression in chronic gastritis, atrophic gastritis and gastric ulcer, and their association with H pylori infection. Methods: Gastric biopsies from normal mucosa (NM, n = 10), chronic gastritis (CG, n = 38), atrophic gastritis (CAG, n = 13) and gastric ulcer (GU, n = 21) were studied using fluorescence in situ hybridization (FISH) and immunohistochemical assay. A modified Giemsa staining technique and PCR were used to detect H pylori. An association of the gastric pathologies and aneuploidies with H pylori infection was assessed. Results: Aneuploidies were increasingly found from CG (21%) to CAG (31%) and to GU (62%), involving mainly monosomy and trisomy 7, trisomies 7 and 8, and trisomies 7, 8 and 17, respectively. A significant association was found between H pylori infection and aneuploidies in CAG (P = 0.0143) and GU (P = 0.0498). No TP53 deletion was found in these gastric lesions, but p53-positive immunoreactivity was detected in 45% (5/11) and 12% (2/17) of CG and GU cases, respectively. However, there was no significant association between p53 expression and H pylori infection. Conclusion: The occurrence of aneuploidies in benign lesions evidences chromosomal instability in early stages of gastric carcinogenesis associated with H pylori infection...

‣ Evaluation of gastric histology in children and adolescents with Helicobacter pylori gastritis using the Update Sydney System

Langner,Marini; Machado,Rodrigo S.; Patrício,Francy R. S.; Kawakami,Elisabete
Fonte: Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia - IBEPEGE ; Colégio Brasileiro de Cirurgia Digestiva - CBCD ; Sociedade Brasileira de Motilidade Digestiva - SBMD ; Federação Brasileira de Gastroenterologia - FBG; Sociedade Brasileira de Hepatologia - SBH; Sociedade Brasileira de Endoscopia Digestiva - SOBED Publicador: Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia - IBEPEGE ; Colégio Brasileiro de Cirurgia Digestiva - CBCD ; Sociedade Brasileira de Motilidade Digestiva - SBMD ; Federação Brasileira de Gastroenterologia - FBG; Sociedade Brasileira de Hepatologia - SBH; Sociedade Brasileira de Endoscopia Digestiva - SOBED
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2009 Português
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CONTEXT: Although Helicobacter pylori infection is prevalent in our country, there are few studies evaluating the associated histological abnormalities in children. OBJECTIVE: To evaluate the histological features of the gastric mucosa in children and adolescents with Helicobacter pylori gastritis. METHODS: One hundred and thirty two gastric biopsies from 22 symptomatic patients infected with H. pylori (14F/8M, median age 10 y 5 mo, age range 2 y 11 mo to 16 y 9 mo) were evaluated. Evaluated gastric regions included: antrum (lesser and greater curvature), corpus (lesser and greater curvature), incisura angularis and fundus. Histological examination was performed according to the Updated Sydney System, and regional scores for polymorphonuclear and mononuclear cell infiltrate as well as bacterial density were generated. RESULTS: Fifteen (68.2%) patients presented H. pylori-chronic active gastritis, six (27.3%) presented antrum-predominant H. pylori-chronic active gastritis, and one (4.5%) presented corpus-predominant H. pylori-chronic active gastritis. Polymorphonuclear cell infiltrate and mononuclear cell infiltrate were observed in 93.9% and 98.5% of the biopsy specimens, respectively. Higher histological scores for polymorphonuclear infiltrate...

‣ Methylation status of CDH1 gene in samples of gastric mucous from brazilian patients with chronic gastritis infected by Helicobacter pylori

Kague,Erika; Thomazini,Cristiane Melissa; Pardini,Maria Inês de Campo Moura; Carvalho,Fabrício de; Leite,Celso Vieira; Pinheiro,Nídia Alice
Fonte: Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia - IBEPEGE ; Colégio Brasileiro de Cirurgia Digestiva - CBCD ; Sociedade Brasileira de Motilidade Digestiva - SBMD ; Federação Brasileira de Gastroenterologia - FBG; Sociedade Brasileira de Hepatologia - SBH; Sociedade Brasileira de Endoscopia Digestiva - SOBED Publicador: Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia - IBEPEGE ; Colégio Brasileiro de Cirurgia Digestiva - CBCD ; Sociedade Brasileira de Motilidade Digestiva - SBMD ; Federação Brasileira de Gastroenterologia - FBG; Sociedade Brasileira de Hepatologia - SBH; Sociedade Brasileira de Endoscopia Digestiva - SOBED
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2010 Português
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CONTEXT: Gastric cancer is one of the top list of cancer types that most leads to death in Brazil and worldwide. Helicobacter pylori(H. pylori) is a class I carcinogen and infect almost 90% of chronic gastritis patients. Some genotypes confer different virulent potential to H. pylori and can increase the risk of gastritis development. Methylation of CpG islands can inactivate tumor suppressor genes and therefore, it can be involved in the tumorigenic process. CDH1 is a tumor suppressor gene that encodes the E-cadherin protein, which is important in maintaining cell-cell contacts. The inactivation of this gene can increase the chance of metastasis. Promoter methylation of CDH1 at early steps of gastric carcinogenesis is not yet completely understood. OBJECTIVE: In this study, we investigated the methylation status of CDH1 in chronic gastritis samples and correlated it with the presence of H. pylori. METHODS: Sixty gastric mucosal biopsies were used in this study. The detection of H. pylori was performed with the PCR primers specific to urease C gene. H. pylori genotyping was performed by PCR to cagA and vacA (s and m region). The methylation status of these gene CDH1 was analyzed using methylation-specific polymerase chain reaction and direct sequencing of the PCR products was performed using primers methylated and unmethylated in both forward and reverse directions. RESULTS: H. pylori was detected in 90% of chronic gastritis samples; among these 33% were cagA positive and 100% vacA s1. The genotype vacA s2/m1 was not detected in any sample analyzed. Methylation of CDH1 was detected in 63.3% of chronic gastritis samples and 95% of them were also H. pylori-positive. CONCLUSION: This work suggests that CDH1 gene methylation and H. pylori infection are frequent events in samples from Brazilian patients with chronic gastritis and reinforces the correlation between H. pylori infection and CDH1 inactivation in early steps of gastric tumorigenesis.

‣ FOCAL ENHANCED GASTRITIS AND MACROPHAGE MICROAGGREGATES IN THE GASTRIC MUCOSA: potential role in the differential diagnosis between Crohn’s disease and ulcerative colitis

MAGALHÃES-COSTA,Marcia Henriques de; REIS,Beatriz Ribeiro dos; CHAGAS,Vera Lúcia Antunes; NUNES,Tiago; SOUZA,Heitor Siffert Pereira de; ZALTMAN,Cyrla
Fonte: Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia - IBEPEGE ; Colégio Brasileiro de Cirurgia Digestiva - CBCD ; Sociedade Brasileira de Motilidade Digestiva - SBMD ; Federação Brasileira de Gastroenterologia - FBG; Sociedade Brasileira de Hepatologia - SBH; Sociedade Brasileira de Endoscopia Digestiva - SOBED Publicador: Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia - IBEPEGE ; Colégio Brasileiro de Cirurgia Digestiva - CBCD ; Sociedade Brasileira de Motilidade Digestiva - SBMD ; Federação Brasileira de Gastroenterologia - FBG; Sociedade Brasileira de Hepatologia - SBH; Sociedade Brasileira de Endoscopia Digestiva - SOBED
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2014 Português
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Context and Objectives Focally enhanced gastritis and macrophage microaggregates are found in the upper gastrointestinal involvement of Crohn’s disease, and may reflect an underlying defective innate immunity. These features, however, are also described in patients with Helicobacter pylori infection. The role of these gastric abnormalities in the diagnosis of Crohn’s disease was assessed in a population with high prevalence of H. pylori infection. Methods Thirty-seven Crohn’s disease, 26 ulcerative colitis, and 30 control patients were included. The H. pylori status was evaluated by the rapid urease test and histology. The presence of focally enhanced gastritis and macrophage microaggregates was recorded. Results Focally enhanced gastritis was present in 24% of Crohn’s disease patients, 4% of ulcerative colitis patients and 11.5% of controls, presenting an overall sensitivity and specificity for Crohn’s disease of 24% and 88%, respectively. Macrophage microaggregates were found in all groups, but were only detected in ulcerative colitis and controls in association with H. pylori infection, with an overall sensitivity and specificity for Crohn’s disease of 61% and 69%, respectively. In the absence of H. pylori infection...

‣ Immunoexpression of CD95 in chronic gastritis and gastric mucosa-associated lymphomas

Vassallo,J.; Godoy Jr.,C.E.; Godoy,C.E.; Chagas,C.A.; Metze,K.; Trevisan,M.A.S.
Fonte: Associação Brasileira de Divulgação Científica Publicador: Associação Brasileira de Divulgação Científica
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2004 Português
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CD95 (Fas/APO-1)-mediated apoptosis plays an important role in immunological regulation and is related to the pathogenesis of autoimmune diseases. Immunoexpression of CD95 has been reported to frequently occur in low grade non-Hodgkin lymphomas, especially of post-germinal center histogenesis, among which those originating in mucosa-associated lymphoid tissue (MALT lymphomas). However, there is no report comparing in situ immunoexpression of this marker in lymphomas and the hyperplastic lymphoid reaction (chronic gastritis) related to Helicobacter pylori infection. The purpose of the present research was to compare the intensity of lymphoid CD95 immunoexpression in 15 cases of H. pylori-related chronic gastritis and 15 gastric MALT lymphomas. CD95 (anti-CD95) was detected by an immunoperoxidase technique in paraffin sections using the catalyzed amplification system. Graduation of reaction intensity (percentage of CD95-positive cells) was semiquantitative, from 1+ to 4+. Nine cases of chronic gastritis were 4+, five 2+ and one 1+. Three lymphomas were 4+, three 3+, four 2+, four 1+, and one was negative. Although 14 of 15 lymphomas were positive for CD95, the intensity of the reaction was significantly weaker compared to that obtained with gastric tissue for patients with gastritis (P = 0.03). The difference in CD95 immunoexpression does not seem to be useful as an isolated criterion in the differential diagnosis between chronic gastritis and MALT lymphomas since there was overlapping of immunostaining patterns. However...

‣ Gastric emptying is altered with the presence of gastritis

Symonds, E.; Tran, C.; Butler, R.; Omari, T.
Fonte: Kluwer Academic/Plenum Publishers Publicador: Kluwer Academic/Plenum Publishers
Tipo: Artigo de Revista Científica
Publicado em //2008 Português
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Helicobacter pylori infection and gastritis can cause symptoms suggestive of altered gastrointestinal function; however, it is unclear if H. pylori influences gastric motility. This study assessed gastric emptying rates in mouse models of gastritis. Gastritis was induced in C57BL/6 mice via ethanol treatment or via challenge with H. pylori or H. felis. Gastric emptying rates of nutrient and non-nutrient liquids were assessed with the non-invasive 13C-breath test, and the results were compared to healthy mice. Gastric emptying of the non-nutrient liquid was unaltered with the presence of gastritis; however, gastric emptying of the nutrient liquid was accelerated after a 4-week infection with H. pylori. H. felis infection and ethanol treatment caused a more severe gastritis and disruptions to the normal gastric emptying. Changes to gastric emptying in mouse models of gastritis are associated with the presence of nutrients. Altered gastric emptying may contribute to symptoms commonly reported in humans with gastritis.; Erin L. Symonds, Cuong D. Tran, Ross N. Butler, and Taher I. Omari

‣ Chronic gastritis associated with Helicobacter pylori. Correlation between histological and bacteriological findings

Paz-Bouza, J.I.; García, I.; Abad, M.M.; Muñoz, Enrique Guillermo; Rincón, M.R.; Bullón, A.
Fonte: Murcia : F. Hernández Publicador: Murcia : F. Hernández
Tipo: Artigo de Revista Científica Formato: application/pdf
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Biopsy specimens of gastric and duodenal mucosa from 326 patients were examined bacteriologically and histologically to determine the correlation between chronic gastritis and H. pylori colonization. H. pylori was identified in 111 (66.5%) patients with evidence of chronic gastritis and in 97 (82.2%) individuals who had gastritis associated with other pathology (gastric o duodenal ulcer, carcinoma o bulboduodenitis). The spiral bacteria was found more frequently in specimens with chronic superficial gastritis (881107) and no significant difference was observed between the grade of activity of gastritis and H. pylori colonization. Giemsa stain was the most suitable method for detecting H. pylori in histological sections. By electron microscopy the microorganism was seen on the surface of the gastric mucosa, beneath the mucous layer, and more occasionally in intercellular junctions and the gastric pit.

‣ Chronic gastritis and Helicobacter pylori in digestive form of Chagas' disease

Barbosa,A. J. A.; Queiroz,D. M. M.; Nogueira,A. M. M. F.; Roquette Reis,M. J. A.; Mendes,E. N.; Rocha,G. A.; Romanello,L. M. F.; Troncon,L. E. A.
Fonte: Instituto de Medicina Tropical Publicador: Instituto de Medicina Tropical
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/1993 Português
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Patients with the digestive form of Chagas'disease frequently present chronic gastritis. As the microorganism Helicobacter pylori is now accepted as the most common cause of human chronic gastritis, the present work was undertaken to verify a possible relationship between the presence of this bacterium and inflammatory changes of antral mucosa in chagasic patients. Seventeen chagasics, with megaesophagus and or megacolon were studied. Fragments from two different regions of antral mucosa were obtained by endoscopy, fixed in 4% neutral formaldehyde and embedded in paraffin. The sections were stained by haematoxylin and eosin for histology analysis, and by carbolfuchsin for H. pylori identification. H. pylori was found in 16 (94.1%) chagasic patients, all of them presenting chronic gastritis. Superficial gastritis was seen in 9 (52.9%) while atrophic gastritis was present in 8 (47.1%) patients. H. pylori was present on gastric mucosa of 8 (100%) patients with atrophic gastritis and of 8 (88.8%) patients with superficial gastritis. We concluded that the microorganism H. pylori should be considered a possible factor connected with the etiopathogenesis of chronic superficial and atrophic gastritis frequently observed in patients with the digestive form of Chagas' disease.

‣ Atrophic Gastritis: A Related Factor for Osteoporosis in Elderly Women

Kim, Hye Won; Kim, Yang-Hyun; Han, Kyungdo; Nam, Ga Eun; Kim, Gwang Seon; Han, Byoung-Duck; Lee, Anna; Ahn, Ji Yong; Ko, Byung Joon
Fonte: Public Library of Science Publicador: Public Library of Science
Tipo: Artigo de Revista Científica
Português
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Purpose Osteoporosis poses a great threat to the aging society. Hypochlorhydric or achlorhydric conditions are risk factors for osteoporosis. Atrophic gastritis also decreases gastric acid production; however, the role of atrophic gastritis as a related factor for osteoporosis is unclear. We investigated the relationship between atrophic gastritis and osteoporosis in postmenopausal women over 60 years of age. Subjects and Methods A total of 401 postmenopausal women were included in this cross-sectional study, which was conducted during their medical check-ups. Bone mineral densitometry was measured using a dual energy X-ray absorptiometry. Atrophic gastritis was defined endoscopically if gastric mucosa in the antrum and the body were found to be atrophied and thinned and submucosal vessels could be well visualized. Results: The proportion of people with atrophic gastritis was higher in the osteoporotic group than in the group without osteoporosis. A linear relationship was observed in the proportion of atrophic gastritis according to the categories of normal, osteopenia, and osteoporosis at the lumbar spine (p for trend = 0.039) and femur (p for trend = 0.001). A multiple logistic regression analysis revealed that the presence of atrophic gastritis was associated with an increased odds of osteoporosis after adjusting for age...

‣ Gastrite crônica e Helicobacter Pylori na forma digestiva da doença de Chagas; Chronic gastritis and Helicobacter pylori in digestive form of Chagas' disease

Barbosa, A. J. A.; Queiroz, D. M. M.; Nogueira, A. M. M. F.; Roquette Reis, M. J. A.; Mendes, E. N.; Rocha, G. A.; Romanello, L. M. F.; Troncon, L. E. A.
Fonte: Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo Publicador: Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; Formato: application/pdf
Publicado em 01/04/1993 Português
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Pacientes com a forma digestiva da doença de Chagas frequentemente apresentam gastrite crônica. Tendo em vista que o microrganismo Helicobacter pylori é hoje considerado a causa mais comum de gastrite crônica no homem, propôs-se a realização deste trabalho para se verificar a possibilidade de esta bactéria estar também associada com as alterações inflamatórias da mucosa gástrica em pacientes com a forma digestiva da doença de Chagas. Fragmentos de duas regiões diferentes da mucosa antral foram obtidos endoscopicamente de 17 pacientes chagásicos com megaesôfago e ou megacolon. Os fragmentos foram processados rotineiramente para inclusão em parafina e cortes de 5 |im de espessura foram corados pela H & E para análise histológica e pela carbolfucsina para a identificação do H. pylori. A bactéria foi encontrada em 16 (94,1%) pacientes, todos eles apresentando gastrite crônica. Gastrite crônica superficial foi observada em 9 (52,9%) enquanto que gastrite crônica atrófica estava presente em 8 (47,1%) pacientes. H. pylori estava presente em todos os pacientes com gastrite crônica atrófica e em 8 (88, 8%) pacientes com gastrite crônica superficial. Conclue-se que o microrganismo H. pylori deve ser considerado como possível fator ligado à etiopatogênese da gastrite crônica superficial e atrófica frequentemente observadas em pacientes com a forma digestiva da doença de Chagas.; Patients with the digestive form of Chagas'disease frequently present chronic gastritis. As the microorganism Helicobacter pylori is now accepted as the most common cause of human chronic gastritis...

‣ Alteraciones genéticas en gastritis crónica: Estudio de inestabilidad microsatelital y pérdida de la heterocigocidad

Roa S,Juan Carlos; Villaseca V,Miguel Angel; Roa E,Iván; Araya O,Juan Carlos
Fonte: Sociedad Médica de Santiago Publicador: Sociedad Médica de Santiago
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2003 Português
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Background: Multifocal chronic gastritis, associated to intestinal metaplasia, is considered a preneoplastic lesion, closely associated to intestinal type gastric cancer. Aim: To study the frequency of microsatellite instability (MSI) and loss of heterozygosity (LOH) in areas of chronic gastritis and intestinal metaplasia in gastric biopsies of patients without cancer. Material and methods: Gastric biopsy samples from 34 patients without cancer (22 with multifocal atrophic gastritis and 12 with diffuse antral gastritis), were studied. Glands from areas of chonic gastritis and intestinal metaplasia and lymphocytes, were collected using laser microdissection of paraffin embedded samples. The analysis of 15 mono and dinucleotide microsatellites was used to assess LOH and MSI. Results: LOH and MSI were found in some of the markers in 55% (12/22) and 59% (13/22) of cases with intestinal metaplasia, respectively. Only one of 12 areas with diffuse atrophic gastritis had MSI and a different area had LOH (p <0.05 or less, when compared with areas of multifocal atrophic gastritis). Three areas of normal epithelium in patients with multifocal atrophic gastritis, also had alterations. Most of these alterations were concordant with adjacent areas with intestinal metaplasia. Conclusions: LOH and MSI was found in areas of intestinal metaplasia in more than half of the studied cases and in few areas of atrophic gastritis without intestinal metaplasia. These findings suggest that genotypic alterations may precede phenotypic modifications and that intestinal metaplasia is a preneoplastic lesion (Rev Méd Chile 2003; 131: 1365-74).

‣ Magnetoterapia en pacientes con gastritis crónica antral

Domínguez Iglesias,Marvelis; Pérez Rodríguez,Zoila
Fonte: Revista Cubana de Medicina Militar Publicador: Revista Cubana de Medicina Militar
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2012 Português
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Introducción: la gastritis crónica es una de las 40 enfermedades más frecuentes en Cuba, su etiología es multifactorial y el Helicobacter pylori es el agente causal principal. A los campos magnéticos se le reconocen los efectos antiinflamatorios, analgésico, regenerador de tejidos e inhibidor del desarrollo de gérmenes patógenos. Objetivo: evaluar la utilidad de la magnetoterapia en pacientes con gastritis crónica antral. Métodos: se realizó un estudio cuasi-experimental prospectivo en 30 pacientes, con diagnóstico positivo histológico de gastritis crónica antral. Todos los pacientes recibieron como único tratamiento campo magnético, frecuencia 50 Hz, en región epigástrica en 20 sesiones. Antes y después del tratamiento se tuvo en cuenta evolución de los síntomas, estudio endoscópico con biopsia y la presencia de H. pylori (grado de colonización). Resultados: al finalizar el tratamiento, 22 pacientes (73,3 %) tenían mejoría clínica, en 26 (86,7 %) la gastritis estaba inactiva y en 23 (76,7 %) el grado de severidad de la gastritis fue ligero. Todos los pacientes colonizados por H. pylori tenían un grado ligero. Conclusiones: se considera que la magnetoterapia resulta útil en el tratamiento de la gastritis crónica antral.

‣ Gastritis crónica antral por Helicobacter pylori en la infancia

Gámez Escalona,Martha M.; Mulet Pérez,Agustín M.; Miranda Moles,Zulma; Mulet Gámez,Agustín M.
Fonte: Revista Cubana de Pediatría Publicador: Revista Cubana de Pediatría
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2008 Português
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INTRODUCCIÓN. La investigación tiene como objetivos conocer la frecuencia de infección por Helicobacter pylori en los niños con gastritis crónica antral, estimar las diferencias en el comportamiento histológico de esta entidad en los niños con infección por Helicobacter pylori y sin ella, e identificar la posible relación entre la edad y las características histológicas de la gastritis crónica antral por Helicobacter pylori. MÉTODO. Se tomó como universo de estudio la totalidad de biopsias gástricas procesadas en el Hospital Pediátrico Provincial de Holguín, entre enero de 1991 y diciembre del 2004. Se determinó una muestra de 192 niños con diagnóstico histológico de gastritis crónica antral. Las biopsias fueron reevaluadas para detectar infección por Helicobacter pylori y su densidad de colonización junto a la actividad y la gravedad de las lesiones de la gastritis. RESULTADOS. Se encontró infección por Helicobacter pylori en el 67,7 % de los pacientes. Las formas activas predominaron en los casos con infección por Helicobacter pylori (116/130) a diferencia de quienes no tenían infección (5/62). Se identificó una relación estadísticamente significativa (p < 0,001) entre la infección por Helicobacter pylori y la gastritis crónica antral activa. Todas las formas graves (40/40) se ubicaron en el grupo de pacientes con Helicobacter pylori. Se identificó una relación estadísticamente significativa (p < 0...

‣ Aislamiento de Helicobacter pylori en Sarro Dental de pacientes con Gastritis del Policlinico "Angamos"

Chumpitaz Conde,J; Gutiérrez Manay,J; Córdova Acosta,R; Sánchez Medina,M; Vásquez Valverde,N; Rivadeira Málaga,C; Beteta Del Carpio,O; Solano Mendoza,L; Marocho Chahuayo,L; Pareja Cuadros,E; Huamán Reyes,A; Valencia Bazalar,E
Fonte: Revista de Gastroenterología del Perú Publicador: Revista de Gastroenterología del Perú
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2006 Português
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OBJETIVO: Detectar la presencia de Helicobater pylori en sarro dentario de pacientes con gastritis del Hospital Angamos ESSALUD diagnosticados por biopsia. MATERIAL Y MÉTODOS: tipo de estudio: Observacional analítico. Población; 115 pacientes programados para endoscopia del servicio de gastroenterología de dicho hospital. La metodología empleada para la biopsia del antro y fondo del estómago fue a través de gastroscopio. Recolectada la muestra se procesó para el diagnóstico histológico de gastritis y la búsqueda de Helicobacter pylori. La muestra de sarro dentario se obtuvo por raspado de la zona supragingival y transportada en medio de conservación para el cultivo de la bacteria en medio selectivo e incubado en microaerofilia por 5 a 10 dias, se hizo coloración de las colonias sospechosas y compararon con una cepa patrón, la prueba de ureasa y oxidasa confirmaron el diagnóstico. RESULTADOS: se hallaron 66 casos de gastritis asociados a H. p. por biopsia. En 24 casos también se logró aislar H. p. en sarro dentario. El otro grupo de 49 casos de gastritis sin H.p. en 4 hubo aislamiento de la bacteria en sarro dentario pero si en 4 casos. CONCLUSIÓN: los resultados indican una relación directa con los casos de gastritis y la positividad en el sarro dentario de Helicobacter pylori lo cual indicaría una relación de los pacientes de estos casos como reservorio de dicha bacteria...

‣ Hallazgos histopatólogicos en la gastritis nodular: experiencia en el Hospital Nacional Cayetano Heredia

Maghidman,Samuel; Cok,Jaime; Bussalleu,Alejandro
Fonte: Revista de Gastroenterología del Perú Publicador: Revista de Gastroenterología del Perú
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2001 Português
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INTRODUCCIÓN: La gastritis nodular (GN) es un hallazgo endoscópico frecuente en adultos. Desde enero de 1994 a abril 1997 hemos observado que de 3600 endoscopías altas 261 pacientes presentaban este hallazgo. Se piensa que la GN es más frecuente en adultos jóvenes y sobretodo en mujeres. Existe bibliografía que afirma que se presenta en niños con más frecuencia y que es rara en adultos. El presente estudio tiene como objetivo evaluar si existe algún patrón histopatológico característico en la GN. MATERIALES Y METODOS: Se revisó 112 informes de endoscopías altas de pacientes con GN que hubiesen sido biopsiados; éstos pacientes fueron apareados según edad y sexo con un grupo control constituido por 111 pacientes, cuyo informe endoscópico hubiese sido considerado normal o el de una gastritis no nodular, excluyéndose diagnósticos como úlcera gástrica o duodenal, duodenitis y neoplasia. Luego las biopsias fueron examinadas por un sólo examinador en un tipo de estudio doble ciego. Las biopsias se evaluaron según los siguientes parámetros: presencia y tipo de gastritis; presencia y grado de inflamación en la mucosa; presencia y porcentaje de metaplasia completa o incompleta; presencia y grado de actividad inflamatoria; presencia y número de folículos linfoides (primarios y secundarios); presencia y número de eosinófilos en la superficie y en la profundidad de la mucosa; presencia de Helicobacter pylori y presencia de edema en el epitelio. RESULTADOS: Los pacientes con GN estuvieron constituidos por 62 mujeres y 50 hombres y el grupo control por 62 mujeres y 49 hombres. Las edades de los pacientes con GN fue de 37 + 17 años (16-82 años) y las del grupo control de 38+17 años (16-82 años). Ambos grupos tuvieron el mismo número de folículos linfoides ( tanto primarios como secundarios)...

‣ Successful Conservative Management of Emphysematous Phlegmonous Gastritis: A Case Report

Ferreira,Carlos Noronha; Correia,Luís; Barjas,Elídio; Serejo,Fátima; Moura,Miguel Carneiro de
Fonte: Sociedade Portuguesa de Gastrenterologia Publicador: Sociedade Portuguesa de Gastrenterologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/05/2010 Português
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BACKGROUND: Acute phlegmonous gastritis is a suppurative bacterial infection of the stomach first described by Curveilhier in 1820. The two variants which have been described are the emphysematous and the necrotizing variant. CASE REPORT: A 30 year old male presented with vomiting and diarrhea over 24 hours. Laboratory tests revealed leukocytosis, neutrophilia and raised C reactive Protein (CRP) levels. The abdominal CT scan showed a diffusely thickened stomach wall with intramural gas as well as in the peripheral intra-hepatic vessels. There was complete resolution of the emphysematous gastritis changes on empirical broad spectrum antibiotic therapy for 10 days with resolution of the emphysematous gastritis changes; oral diet was started. An exhaustive investigation for a possible etiological factor of emphysematous gastritis was inconclusive. The patient was dis­charged on the 11th day. An abdominal CT scan and upper GI endoscopy repeated after discharge were normal. CONCLUSIONS: This report describes the successful management of a patient with the emphysematous variant of phlegmonous gastritis with broad spectrum antibiotic treatment. We review the pathogenesis, clinical manifestations and management of this rare, often fatal pathology.

‣ Absceso gástrico secundario a gastritis eosinofílica. Reporte de un caso pediátrico

Samudio,Gloria; Espínola,Regina; Brizuela,Silvia
Fonte: Sociedad Paraguaya de Pediatría Publicador: Sociedad Paraguaya de Pediatría
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2011 Português
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Introducción: El absceso de pared gástrica es una enfermedad poco común, a menudo de evolución fatal, caracterizada por infección bacteriana de la pared gástrica. El diagnóstico es tardío en la mayoría de los casos. Se asocia frecuentemente con algún tipo de inmunocompromiso. No encontramos reportes de casos secundarios a gastritis eosinofílica. El tratamiento debe ser médico y quirúrgico. El tratamiento médico solo, puede ser exitoso. Presentación de caso: Adolescente de 11 años de edad, masculino, con historia de 15 días de evolución de caída desde 2 metros, sobre región abdominal, posteriormente presentó dolor, fiebre, náuseas y vómitos. Pérdida de peso importante desde el inicio del cuadro y tumoración en epigastrio de crecimiento progresivo, FR: 24 x´ FC: 120 x´ T: 37,5ºC TA 120/80 mm Hg GB: 19.900 N: 84% E: 7% L: 9% Hb: 13,6 gr/dl Hto: 40% plaquetas: 565.000 PCR: positiva Urea 26 mg/dl, creatinina 0,7 mg/dl, bilirrubina 0,13 mg/dl, FA: 485 UI/L GOT 23 UI/L GPT 22UI/L TAC de abdomen engrosamiento parietal circunferencial de toda la cavidad gástrica. Recibió cefazolina más amikacina. Por desmejoría del cuadro se amplió a piperacilina - tazobactam + vancomicina mejorando parcialmente. Se realizó endoscopia digestiva y se realizó el diagnóstico de gastritis eosinofílica. Luego del agregado de corticoides la mejoría se aceleró. Comentario: Los abscesos de pared gástrica son una patología rara en la infancia y obliga a descartar cuadro subyacente.[abstract] Palabras clave: [keygrp scheme=decs][ign][keyword type=m language=es]Gastritis flemonosa[ign]...