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1.
Dig Dis ; : 1-13, 2024 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-38657585

RESUMEN

INTRODUCTION: Early diagnosis of hepatocellular carcinoma (HCC) as well as evaluation of prognosis and prediction of treatment efficacy remains challenging due to the missing specific non-invasive biomarkers. The aim of this study was to identify disease-specific microRNA (miRNA) patterns for diagnosis, prediction of prognosis, and treatment response in patients with HCC. METHODS: The study population included 42 HCC patients from SORAMIC clinical trial: 22 patients received sorafenib monotherapy, 20 patients underwent 90Y radioembolization in combination with sorafenib. 20 individuals were included in the control group. HCC patients underwent collection of plasma samples before and 7-9 weeks after the beginning of the treatment. Isolation of circulating miRNAs, preparation of small RNA sequencing libraries and next-generation sequencing were performed. Association analysis for novel diagnostic, prognostic, and treatment-related candidate biomarkers was performed. RESULTS: A total of 42 differentially expressed (16 up-regulated and 26 down-regulated) miRNAs were identified comparing baseline and control group plasma samples. hsa-miR-215-5p and hsa-miR-192-5p were down-regulated, while hsa-miR-483-5p and hsa-miR-23b-3p were up-regulated comparing baseline and 7-9 weeks post-sorafenib monotherapy samples. hsa-miR-215-5p was the sole down-regulated miRNA in the same combination therapy comparison. hsa-miR-183-5p, hsa-miR-28-3p, and hsa-miR-1246 were found to be significantly up-regulated comparing non-responders versus responders to sorafenib. High hsa-miR-215-5p expression was significantly associated with worse HCC patients' prognosis. CONCLUSIONS: Systematic miRNA profiling of highly characterized samples from SORAMIC study revealed a subset of potential miRNA biomarkers for HCC diagnosis and prognosis of sorafenib-treated patients' survival.

2.
Z Gastroenterol ; 62(4): 512-516, 2024 Apr.
Artículo en Alemán | MEDLINE | ID: mdl-38237628

RESUMEN

Four decades ago the discovery of Helicobacter pylori was first reported in the international medical literature. Since then, there have been significant developments in basic and clinical science that have been translated into daily clinical practice. Changes in the management of H. pylori infection have occurred in diagnostic algorithms, indications for therapy and therapy itself. A special focus is directed to strategies of gastric cancer prevention.This manuscript briefly reviews the milestone in 40 years of H. pylori management.


Asunto(s)
Infecciones por Helicobacter , Helicobacter pylori , Neoplasias Gástricas , Humanos , Infecciones por Helicobacter/terapia , Infecciones por Helicobacter/tratamiento farmacológico , Neoplasias Gástricas/diagnóstico , Neoplasias Gástricas/prevención & control
3.
Eur J Nucl Med Mol Imaging ; 49(13): 4716-4726, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-35916920

RESUMEN

PURPOSE: To compare the treatment response and progression-free survival (PFS) in advanced hepatocellular carcinoma (HCC) patients who received sorafenib treatment either alone or combined with radioembolization (RE). METHODS: Follow-up images of the patients treated within a multicenter phase II trial (SORAMIC) were assessed by mRECIST. A total of 177 patients (73 combination arm [RE + sorafenib] and 104 sorafenib arm) were included in this post-hoc analysis. Response and progression characteristics were compared between treatment arms. Survival analyses were done to compare PFS and post-progression survival between treatment arms. Multivariate Cox regression analysis was used to compare survival with factors known to influence PFS in patients with HCC. RESULTS: The combination arm had significantly higher objective response rate (61.6% vs. 29.8%, p < 0.001), complete response rate (13.7% vs. 3.8%, p = 0.022), and a trend for higher disease control rate (79.2% vs. 72.1%, p = 0.075). Progression was encountered in 116 (65.5%) patients and was more common in the sorafenib arm (75% vs. 52.0%, p = 0.001). PFS (median 8.9 vs. 5.4 months, p = 0.022) and hepatic PFS were significantly better in the combination arm (9.0 vs. 5.7 months, p = 0.014). Multivariate analysis confirmed the treatment arm as an independent predictor of PFS. CONCLUSION: In advanced HCC patients receiving sorafenib, combination with RE has an additive anticancer effect on sorafenib treatment resulting in a higher and longer tumor response. However, the enhanced response did not translate into prolonged survival. Better patient selection and superselective treatment could improve outcomes after combination therapy.


Asunto(s)
Carcinoma Hepatocelular , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/terapia , Sorafenib/uso terapéutico , Sorafenib/efectos adversos , Radioisótopos de Itrio/uso terapéutico , Neoplasias Hepáticas/tratamiento farmacológico , Compuestos de Fenilurea/uso terapéutico
4.
Eur Radiol ; 32(2): 1320-1329, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34467453

RESUMEN

OBJECTIVES: To evaluate the correlation between liver enhancement on hepatobiliary phase and liver function parameters in a multicenter, multivendor study. METHODS: A total of 359 patients who underwent gadoxetic acid-enhanced MRI using a standardized protocol with various scanners within a prospective multicenter phase II trial (SORAMIC) were evaluated. The correlation between liver enhancement on hepatobiliary phase normalized to the spleen (liver-to-spleen ratio, LSR) and biochemical laboratory parameters, clinical findings related to liver functions, liver function grading systems (Child-Pugh and Albumin-Bilirubin [ALBI]), and scanner characteristics were analyzed using uni- and multivariate analyses. RESULTS: There was a significant positive correlation between LSR and albumin (rho = 0.193; p < 0.001), platelet counts (rho = 0.148; p = 0.004), and sodium (rho = 0.161; p = 0.002); and a negative correlation between LSR and total bilirubin (rho = -0.215; p < 0.001) and AST (rho = -0.191; p < 0.001). Multivariate analysis confirmed independent significance for each of albumin (p = 0.022), total bilirubin (p = 0.045), AST (p = 0.031), platelet counts (p = 0.012), and sodium (p = 0.006). The presence of ascites (1.47 vs. 1.69, p < 0.001) and varices (1.55 vs. 1.69, p = 0.006) was related to significantly lower LSR. Similarly, patients with ALBI grade 1 had significantly higher LSR than patients with grade 2 (1.74 ± 0.447 vs. 1.56 ± 0.408, p < 0.001); and Child-Pugh A patients had a significantly higher LSR than Child-Pugh B (1.67 ± 0.44 vs. 1.49 ± 0.33, p = 0.021). Also, LSR was negatively correlated with MELD-Na scores (rho = -0.137; p = 0.013). However, one scanner brand was significantly associated with lower LSR (p < 0.001). CONCLUSIONS: The liver enhancement on the hepatobiliary phase of gadoxetic acid-enhanced MRI is correlated with biomarkers of liver functions in a multicenter cohort. However, this correlation shows variations between scanner brands. KEY POINTS: • The correlation between liver enhancement on the hepatobiliary phase of gadoxetic acid-enhanced MRI and liver function is consistent in a multicenter-multivendor cohort. • Signal intensity-based indices (liver-to-spleen ratio) can be used as an imaging biomarker of liver function. • However, absolute values might change between vendors.


Asunto(s)
Carcinoma Hepatocelular , Neoplasias Hepáticas , Carcinoma Hepatocelular/diagnóstico por imagen , Medios de Contraste , Gadolinio DTPA , Humanos , Hígado/diagnóstico por imagen , Neoplasias Hepáticas/diagnóstico por imagen , Imagen por Resonancia Magnética , Estudios Prospectivos , Estudios Retrospectivos
5.
Internist (Berl) ; 63(4): 367-371, 2022 Apr.
Artículo en Alemán | MEDLINE | ID: mdl-35230465

RESUMEN

The diagnostics and treatment of Helicobacter pylori infections are subject to continuous changes and adaptations. Due to the increase of resistance rates to frequently used antibiotics, especially clarithromycin and the lack of new antibacterial substances as well as new developments in the diagnostics, particularly new procedures for resistance testing, the guidelines have to be updated regularly. In this article new directions and trends of the forthcoming European and German guidelines are summarized, categorized and discussed by the authors involved in the compilation of future guidelines.


Asunto(s)
Infecciones por Helicobacter , Helicobacter pylori , Antibacterianos/uso terapéutico , Claritromicina/uso terapéutico , Farmacorresistencia Bacteriana , Quimioterapia Combinada , Infecciones por Helicobacter/diagnóstico , Infecciones por Helicobacter/tratamiento farmacológico , Humanos
6.
Eur J Clin Invest ; 51(12): e13666, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34390492

RESUMEN

BACKGROUND: Distinct faecal microbiota profiles are reported to be associated with various subtypes of IBS. Circulating antibodies to cytolethal distending toxin B (CdtB) and vinculin are proposed as biomarkers to identify post-infectious IBS. The aim of our study was to analyse serum levels of anti-CdtB and anti-vinculin antibodies in patients with different functional gastrointestinal disorders (FGID) and their correlation with the composition of faecal microbiome. METHODS: The study cohort comprised 65 prospectively recruited individuals: 15 with diarrhoea-type-IBS (IBS-D), 13 with constipation-type-IBS (IBS-C), 15 with functional dyspepsia (FD) and 22 healthy controls. FGID subgroups were defined according to Rome III criteria. Serum levels of anti-CdtB and anti-vinculin antibodies were measured by ELISA. Faecal microbiome composition analysis and assessment of dysbiosis were performed by GA-map® Dysbiosis Test. RESULTS: Positivity rate either for anti-CdtB or anti-vinculin antibodies was higher in the IBS-C group (76.9%) compared to IBS-D (40.0%), FD (60%) and healthy (63.6%) groups. Dysbiosis was more frequent in subjects positive for anti-CdtB antibodies and in IBS-C patients, who showed an increased amount of opportunistic/pro-inflammatory bacteria and reduced gut protective bacteria. IBS-C patients showed a high inter-individual variation of bacterial communities compared to other FGID subgroups and healthy individuals, whereas microbial profiles of patients with IBS-D and FD were overlapping with those of healthy controls. No bacteria markers showed significant differences between FGID subgroups and healthy controls. CONCLUSION: Neither anti-CdtB/anti-vinculin antibodies nor faecal microbial profiles allowed to discriminate between specific FGID subgroups. Dysbiosis was more frequent in patients presenting with anti-CdtB antibodies and in IBS-C patients.


Asunto(s)
Anticuerpos Antibacterianos/inmunología , Autoanticuerpos/inmunología , Toxinas Bacterianas/inmunología , Disbiosis/inmunología , Enfermedades Gastrointestinales/inmunología , Vinculina/inmunología , Adulto , Anciano , Estudios de Casos y Controles , Estreñimiento/inmunología , Estreñimiento/microbiología , Reacciones Cruzadas/inmunología , Diarrea/inmunología , Diarrea/microbiología , Disbiosis/microbiología , Dispepsia/inmunología , Dispepsia/microbiología , Femenino , Enfermedades Gastrointestinales/microbiología , Microbioma Gastrointestinal , Humanos , Síndrome del Colon Irritable/inmunología , Síndrome del Colon Irritable/microbiología , Masculino , Persona de Mediana Edad , Adulto Joven
7.
Gastroenterology ; 157(4): 1081-1092.e3, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-31175864

RESUMEN

BACKGROUND & AIMS: The microbiome varies along the human gastrointestinal (GI) tract with exposure to luminal and mucosal factors. We analyzed active bacterial communities at 8 locations along the GI tract using high-throughput sequencing techniques. METHODS: We collected saliva, mucosal, and fecal samples from healthy adults (10 men and 11 women; mean age, 59 ± 12.3 years) who underwent upper and lower GI tract endoscopy in Germany from December 2015 through September 2016. Biopsies were taken from stomach, antrum, corpus, duodenum, terminal ileum, ascending colon, and descending colon. RNA was extracted from all samples and reverse transcribed into complementary DNA; V1-V2 regions of 16S ribosomal RNA genes were amplified and sequenced on an Illumina MiSeq platform. Abundances of the taxa in all taxonomic ranks in each sample type were used to construct sample-similarity matrices with the Bray-Curtis algorithm. Significant differences between a priori-defined groups were evaluated using analysis of similarity. RESULTS: After taxonomic annotation, 4045 phylotypes, belonging to 169 genera and 14 different phyla, were identified. Each subject had a different bacterial community. We identified distinct microbial consortia in saliva, upper GI tract, lower GI tract, and fecal samples. The predominant genera in the upper GI tract (Gemella, Veillonella, Neisseria, Fusobacterium, Streptococcus, Prevotella, Pseudomonas, and Actinomyces) were almost absent from the lower GI tract, where the microbial communities mainly comprised Faecalibacterium, Ruminococcus, and Bacteroides. The bacterial communities in the upper GI tract were characterized by greater richness and heterogeneity (measured by the Shannon index) than those in the lower GI tract. We detected Helicobacter pylori in only the upper GI tract. CONCLUSIONS: In an analysis of saliva, mucosal, and fecal samples from 21 healthy adults, we found each individual, and each GI region, to have a different bacterial community. The fecal microbiome is not representative of the mucosal microbiome. We propose a systematic method to analyze the bacterial communities of the GI tract.


Asunto(s)
Bacterias/genética , ADN Bacteriano/genética , Microbioma Gastrointestinal , Tracto Gastrointestinal/microbiología , Regulación Bacteriana de la Expresión Génica , ARN Ribosómico 16S/genética , Activación Transcripcional , Anciano , Bacterias/clasificación , Heces/microbiología , Femenino , Mucosa Gástrica/microbiología , Alemania , Voluntarios Sanos , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Mucosa Intestinal/microbiología , Masculino , Persona de Mediana Edad , Filogenia , Ribotipificación , Saliva/microbiología
8.
Clin Gastroenterol Hepatol ; 18(3): 728-735.e4, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31712073

RESUMEN

BACKGROUND & AIMS: The prevalence of nonalcoholic steatohepatitis (NASH) associated hepatocellular carcinoma (HCC) is increasing. However, strategies for detection of early-stage HCC in patients with NASH have limitations. We assessed the ability of the GALAD score, which determines risk of HCC based on patient sex; age; and serum levels of α-fetoprotein (AFP), AFP isoform L3 (AFP-L3), and des-gamma-carboxy prothrombin (DCP), to detect HCC in patients with NASH. METHODS: We performed a case-control study of 125 patients with HCC (20% within Milan Criteria) and 231 patients without HCC (NASH controls) from 8 centers in Germany. We compared the performance of serum AFP, AFP-L3, or DCP vs GALAD score to identify patients with HCC using receiver operating characteristic curves and corresponding area under the curve (AUC) analyses. We also analyzed data from 389 patients with NASH under surveillance for HCC in Japan, followed for a median of 167 months. During the 5-year screening period, 26 patients developed HCC. To compensate for irregular intervals of data points, we performed locally weighted scatterplot smoothing, linear regression, and a non-linear curve fit to assess development of GALAD before HCC development. RESULTS: The GALAD score identified patients with any stage HCC with an AUC of 0.96 - significantly greater than values for serum levels of AFP (AUC, 0.88), AFP-L3 (AUC, 0.86) or DCP (AUC, 0.87). AUC values for the GALAD score were consistent in patients with cirrhosis (AUC, 0.93) and without cirrhosis (AUC, 0.98). For detection of HCC within Milan Criteria, the GALAD score achieved an AUC of 0.91, with a sensitivity of 68% and specificity of 95% at a cutoff of -0.63. In a pilot Japanese cohort study, the mean GALAD score was higher in patients with NASH who developed HCC than in those who did not develop HCC as early as 1.5 years before HCC diagnosis. GALAD scores were above -0.63 approximately 200 days before the diagnosis of HCC. CONCLUSIONS: In a case-control study performed in Germany and a pilot cohort study in Japan, we found the GALAD score may detect HCC with high levels of accuracy in patients with NASH, with and without cirrhosis. The GALAD score can detect patients with early-stage HCC, and might facilitate surveillance of patients with NASH, who are often obese, which limits the sensitivity of detection of liver cancer by ultrasound.


Asunto(s)
Carcinoma Hepatocelular , Neoplasias Hepáticas , Enfermedad del Hígado Graso no Alcohólico , Biomarcadores , Biomarcadores de Tumor , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/epidemiología , Estudios de Casos y Controles , Estudios de Cohortes , Humanos , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/epidemiología , Enfermedad del Hígado Graso no Alcohólico/complicaciones , Enfermedad del Hígado Graso no Alcohólico/diagnóstico , Proyectos Piloto , Precursores de Proteínas , Protrombina , Curva ROC , Sensibilidad y Especificidad , alfa-Fetoproteínas
9.
Acta Oncol ; 59(9): 1028-1035, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32366155

RESUMEN

Background: Sorafenib for advanced hepatocellular carcinoma (HCC) is dose adjusted by toxicity. Preliminary studies have suggested an association between plasma concentrations of sorafenib and its main metabolite (M2) and clinical outcomes. This study aimed to validate these findings and establish target values for sorafenib trough concentrations.Methods: Patients with advanced HCC were prospectively recruited within a multicenter phase II study (SORAMIC). Patients with blood samples available at trough level were included for this pharmacokinetic (PK) substudy. Trough plasma concentrations of sorafenib and its main metabolite (M2) were associated with sorafenib-related toxicity and overall survival (OS).Results: Seventy-four patients were included with a median OS of 19.7 months (95% CI 16.1-23.3). Patients received sorafenib for a median of 51 weeks (IQR 27-62) and blood samples were drawn after a median of 25 weeks (IQR 10-42). Patients had a median trough concentration of 3217 ng/ml (IQR 2166-4526) and 360 ng/ml (IQR 190-593) with coefficients of variation of 65% and 146% for sorafenib and M2, respectively. Patients who experienced severe sorafenib-related toxicity received a lower average daily dose (551 vs 730 mg/day, p = .003), but showed no significant differences in sorafenib (3298 vs 2915 ng/ml, p = .442) or M2 trough levels (428 vs 283 ng/ml, p = .159). Trough levels of sorafenib or M2 showed no significant association with OS.Conclusions: In patients with advanced HCC treated with sorafenib, the administered dose, trough levels of sorafenib or M2, and clinical outcomes were poorly correlated. Toxicity-adjusted dosing remains the standard for sorafenib treatment.


Asunto(s)
Antineoplásicos/farmacocinética , Carcinoma Hepatocelular/tratamiento farmacológico , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/epidemiología , Neoplasias Hepáticas/tratamiento farmacológico , Sorafenib/farmacocinética , Anciano , Antineoplásicos/administración & dosificación , Antineoplásicos/toxicidad , Carcinoma Hepatocelular/sangre , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/mortalidad , Relación Dosis-Respuesta a Droga , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/sangre , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/diagnóstico , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/etiología , Femenino , Humanos , Incidencia , Estimación de Kaplan-Meier , Neoplasias Hepáticas/sangre , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/mortalidad , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Estudios Prospectivos , Valores de Referencia , Índice de Severidad de la Enfermedad , Sorafenib/administración & dosificación , Sorafenib/toxicidad
10.
Helicobacter ; 24 Suppl 1: e12637, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31486237

RESUMEN

This review covers recent publications investigating the relationship between Helicobacter pylori infection and gastroesophageal reflux disease, Barrett's esophagus, eosinophilic esophagitis, peptic ulcer disease (PUD), H pylori gastritis, and functional dyspepsia. In the area of gastroesophageal reflux disease, new data suggest that reflux may have a role in the transmission of H pylori infection. In addition to several observational studies, data on alterations in esophageal physiology in patients with H pylori infection are presented. Further evidence for the inverse relationship between H pylori infection and Barrett's esophagus is available in the form of a meta-analysis from the North American Barrett's and Esophageal Carcinoma Consortium. The relationship between H pylori infection and eosinophilic esophagitis remains uncertain. Although new data do not indicate a significantly lower prevalence of H pylori among patients with eosinophilic esophagitis, a meta-analysis showed a 37% reduced risk of eosinophilic esophagitis among H pylori-infected patients. Novel data are presented on the genetic variability of bacterial virulence factors and their relationship with PUD. We also report data on plasma biomarkers, which may detect progression to gastric cancer in H pylori-associated PUD. A new meta-analysis was published, which assessed the risk of PUD in low-dose aspirin users with H pylori infection. Finally, we report on the ongoing attempts to stratify patients with gastritis using endoscopic methods when compared to standard biopsy examination.


Asunto(s)
Enfermedades Gastrointestinales/etiología , Enfermedades Gastrointestinales/patología , Infecciones por Helicobacter/epidemiología , Infecciones por Helicobacter/patología , Helicobacter pylori/aislamiento & purificación , Humanos , Prevalencia
11.
Dig Dis ; 37(2): 161-169, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30428474

RESUMEN

BACKGROUND: Gut microbiota play an essential role in the pathogenesis of hepatic encephalopathy (HE). Treatment strategies are directed to modulate intestinal microbiota profiles and their function by the administration of the non-absorbable disaccharide lactulose and the non-absorbable antibiotic rifaximin, which are required for long terms, but little is known on their long-term effect on gut microbiota composition and function. AIM: To characterize the active bacterial assemblages in duodenum and faeces in patients with minimal HE (MHE) before, during and after long-term therapy with rifaximin. METHODS: We analysed the microbiota composition in 5 patients with liver cirrhosis and MHE treated either with rifaximin 550 mg bid alone continuously for a period of 3 months or combined with lactulose 30-60 mL daily for 3 months. In addition to clinical assessments of HE, biopsies from duodenum and stool samples were analysed for their specific bacterial community applying NGS after RNA isolation before treatment, after 3 months of treatment and 3 months after the end of treatment. RESULTS: All 5 patients had a significant improvement of their MHE. Bacterial communities were different and distinct in duodenal samples and faeces. No statistically significant changes were found in the bacterial community profile at the different time points. CONCLUSION: Rifaximin therapy with and without lactulose over a period of 3 months does not affect the bacterial community composition. The improvement of HE with rifaximin is lasting also after the end of treatment and therefore a prolonged effect on microbiota metabolic function is suggested.


Asunto(s)
Heces/microbiología , Microbioma Gastrointestinal/efectos de los fármacos , Encefalopatía Hepática/tratamiento farmacológico , Encefalopatía Hepática/microbiología , Intestino Delgado/efectos de los fármacos , Intestino Delgado/patología , Lactulosa/uso terapéutico , Rifaximina/uso terapéutico , Adulto , Anciano , Antibacterianos/uso terapéutico , Estudios de Cohortes , Femenino , Humanos , Lactulosa/farmacología , Masculino , Persona de Mediana Edad , Filogenia , Análisis de Componente Principal , Rifamicinas/uso terapéutico , Rifaximina/farmacología , Factores de Tiempo
13.
Gut ; 67(2): 216-225, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-27920199

RESUMEN

OBJECTIVE: Patients infected with Helicobacter pylori develop chronic gastritis with a subgroup progressing to further complications. The role of microbiota from the oral cavity swallowed with saliva and either transiting the stomach or persisting in the gastric mucosa is uncertain. It is also not known whether the bacterial community differs in luminal and mucosal niches. A key question is whether H. pylori influences the bacterial communities of gastroduodenal niches. DESIGN: Saliva, gastric and duodenal aspirates as well as gastric and duodenal biopsies were collected during oesophagogastroduodenoscopy from 24 patients (m:9, f:15, mean age 52.2±SD 14.5 years). RNA was extracted and the V1-V2 region of the retrotranscribed bacterial 16S rRNA amplified and sequenced on the Illumina MiSeq platform. RESULTS: Overall, 687 bacterial phylotypes that belonged to 95 genera and 11 phyla were observed. Each individual comprised a unique microbiota composition that was consistent across the different niches. However, the stomach fluid enriched for specific microbiota components. Helicobacter spp were shown to dominate the mucosa-associated community in the stomach, and to significantly influence duodenal and oral communities. CONCLUSIONS: The detailed analysis of the active global bacterial communities from the five distinct sites of the upper GI tract allowed for the first time the differentiation between host effects and the influence of sampling region on the bacterial community. The influence of Helicobacter spp on the global community structures is striking.


Asunto(s)
Duodeno/microbiología , Mucosa Gástrica/microbiología , Infecciones por Helicobacter/microbiología , Helicobacter pylori , Mucosa Intestinal/microbiología , Saliva/microbiología , Adulto , Anciano , Biopsia , Enfermedad Crónica , Duodeno/patología , Endoscopía Gastrointestinal , Femenino , Jugo Gástrico/microbiología , Mucosa Gástrica/patología , Gastritis/microbiología , Gastritis/patología , Microbioma Gastrointestinal , Infecciones por Helicobacter/patología , Humanos , Mucosa Intestinal/patología , Masculino , Persona de Mediana Edad , Boca/microbiología , ARN Ribosómico 16S/análisis
14.
Gastroenterology ; 153(6): 1544-1554.e2, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-28918191

RESUMEN

BACKGROUND & AIMS: The clinical course of chronic pancreatitis is unpredictable. There is no model to assess disease severity or progression or predict patient outcomes. METHODS: We performed a prospective study of 91 patients with chronic pancreatitis; data were collected from patients seen at academic centers in Europe from January 2011 through April 2014. We analyzed correlations between clinical, laboratory, and imaging data with number of hospital readmissions and in-hospital days over the next 12 months; the parameters with the highest degree of correlation were used to develop a 3-stage chronic pancreatitis prognosis score (COPPS). The predictive strength was validated in 129 independent subjects identified from 2 prospective databases. RESULTS: The mean number of hospital admissions was 1.9 (95% confidence interval [CI], 1.39-2.44) and 15.2 for hospital days (95% CI, 10.76-19.71) for the development cohort and 10.9 for the validation cohort (95% CI, 7.54-14.30) (P = .08). Based on bivariate correlations, pain (numeric rating scale), level of glycated hemoglobin A1c, level of C-reactive protein, body mass index, and platelet count were used to develop the COPPS system. The patients' median COPPS was 8.9 points (range, 5-14). The system accurately discriminated stages of disease severity (low to high): A (5-6 points), B (7-9), and C (10-15). In Pearson correlation analysis of the development cohort, the COPPS correlated with hospital admissions (0.39; P < .01) and number of hospital days (0.33; P < .01). The correlation was validated in the validation set (Pearson correlation values of 0.36 and 0.44; P < .01). COPPS did not correlate with results from the Cambridge classification system. CONCLUSIONS: We developed and validated an easy to use dynamic multivariate scoring system, similar to the Child-Pugh-Score for liver cirrhosis. The COPPS allows objective monitoring of patients with chronic pancreatitis, determining risk for readmission to hospital and potential length of hospital stay.


Asunto(s)
Técnicas de Apoyo para la Decisión , Pancreatitis Crónica/diagnóstico , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores/sangre , Índice de Masa Corporal , Proteína C-Reactiva/análisis , Distribución de Chi-Cuadrado , Progresión de la Enfermedad , Femenino , Alemania , Hemoglobina Glucada/análisis , Estado de Salud , Humanos , Tiempo de Internación , Modelos Lineales , Masculino , Persona de Mediana Edad , Análisis Multivariante , Dimensión del Dolor , Pancreatitis Crónica/sangre , Pancreatitis Crónica/complicaciones , Pancreatitis Crónica/terapia , Readmisión del Paciente , Recuento de Plaquetas , Valor Predictivo de las Pruebas , Pronóstico , Estudios Prospectivos , Reproducibilidad de los Resultados , Factores de Riesgo , Índice de Severidad de la Enfermedad , Factores de Tiempo , Adulto Joven
15.
Pancreatology ; 17(5): 698-705, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28784575

RESUMEN

BACKGROUND & OBJECTIVES: Chronic pancreatitis (CP) and liver cirrhosis (LC) are common gastroenterological disorders but their co-incidence is considered to be rare. This study was designed to identify lifestyle factors that are associated with the development of concomitant LC in patients with CP. METHODS: In a retrospective case-control study between 2000 and 2005 122 patients with both CP and LC and 223 matched control patients with CP and no known liver disease were identified in 11 European university medical centers. Another 24 patients and 48 CP controls were identified in the period between 2006 and 2012. RESULTS: Alcoholism was most commonly regarded as aetiology for both CP (82.2%; 95% confidence interval (CI): 75.0-88.0%) and LC (79.5%; 95% CI: 72.0-85.7%) as compared to controls with CP only (68.6%; 95% CI: 62.7-74.1%). The preferred type of alcoholic beverage and pattern of alcohol intake were the only significant lifestyle factors in multivariate analysis. Frequency of alcohol intake (p = 0.105) and smoking status (p = 0.099) were not significant in bivariate analysis and dropped out of the multivariate model. Recurrent and chronic pancreatic pain was observed more often in patients with only CP, whereas gallstones were more common in individuals with both chronic disorders. CONCLUSIONS: These findings indicate that certain lifestyle factors might be important for the development of concomitant CP and LC. More studies will be needed to identify additional genetic and environmental factors underlying this association.


Asunto(s)
Consumo de Bebidas Alcohólicas/efectos adversos , Estilo de Vida , Cirrosis Hepática/complicaciones , Pancreatitis Crónica/complicaciones , Fumar/efectos adversos , Adulto , Índice de Masa Corporal , Estudios de Casos y Controles , Europa (Continente)/epidemiología , Femenino , Cálculos Biliares/complicaciones , Humanos , Cirrosis Hepática/epidemiología , Masculino , Análisis Multivariante , Pancreatitis Crónica/epidemiología , Estudios Retrospectivos , Factores de Riesgo
16.
Dig Dis ; 34(3): 210-6, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27028228

RESUMEN

The discovery of Helicobacter pylori changed the traditional view of the stomach as a hostile organ to bacterial survival. H. pylori induces chronic gastritis, which has the potential to progress to severe complications such as peptic ulcer disease and gastric neoplasia. The development of modern nucleotide sequencing techniques and new biocomputational tools allow the possibility of studying the diversity and complexity of the microbiome in the whole gastrointestinal (GI) tract and overcome the limitations of culturing techniques. However, the differentiation of alive resident and transient microbes in the upper GI tract and their role in the pathogenesis of gastroduodenal diseases requires an analysis beyond the detection of bacterial genomic material alone. Metabolomic and transcriptomic analyses of the bacteria may add important insights into their interaction with the host. Currently, the interaction of H. pylori with other microbes in the stomach and duodenum and their role for health and disease is poorly understood. This review provides a concise overview on the current knowledge of H. pylori and other gastric microbiota in the relationship with gastroduodenal pathologies.


Asunto(s)
Duodeno/microbiología , Duodeno/patología , Microbioma Gastrointestinal , Helicobacter pylori/fisiología , Estómago/microbiología , Estómago/patología , Dieta , Ambiente , Humanos
17.
Liver Int ; 35(2): 620-6, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24930619

RESUMEN

BACKGROUND & AIMS: The benefits of combined systemic and liver-directed treatments in inoperable intermediate- or advanced-stage hepatocellular carcinoma (HCC) have yet to be defined. This article presents the planned safety analyses for the first 40 patients randomized to radioembolization with yttrium-90 ((90) Y) resin microspheres followed by sorafenib (n = 20) or sorafenib only (n = 20) in the SORAMIC study. METHODS: Patients identified for palliative treatment who were poor candidates for transarterial (chemo)embolization (including those failing TACE) with preserved liver function (Child-Pugh ≤B7) and ECOG performance status <2 were screened. Radioembolization was administered using a sequential lobar approach. On day 3 after the last radioembolization procedure, sorafenib 200 mg twice daily was initiated escalating to 400 mg twice daily 1 week later; a matching sorafenib dose schedule was initiated in the control arm. RESULTS: Patients were followed up for a median of 8.3 months. Median total implanted activity of (90) Y was 1.87 (range: 0.54-2.35) GBq. Patients received a similar intensity and duration of sorafenib in the combination-treatment arm (median daily dose 614 mg over 8.5 months) and control arm (557 mg over 9.6 months). The incidence of total (196 vs. 222) and grade ≥3 (43 vs. 47) adverse events was similar in combination-treatment arm and control arm respectively (P > 0.05). No significant differences in the number of total or grade 3/4 toxicities were recorded for: total bilirubin, albumin, liver enzymes, ascites, Child-Pugh, fatigue, hand-foot skin reaction, blood pressure or diarrhoea. CONCLUSIONS: Radioembolization followed by sorafenib appears to be as well tolerated as sorafenib alone.


Asunto(s)
Carcinoma Hepatocelular/tratamiento farmacológico , Carcinoma Hepatocelular/radioterapia , Embolización Terapéutica/métodos , Neoplasias Hepáticas/tratamiento farmacológico , Neoplasias Hepáticas/radioterapia , Niacinamida/análogos & derivados , Compuestos de Fenilurea/uso terapéutico , Itrio/uso terapéutico , Terapia Combinada , Embolización Terapéutica/efectos adversos , Europa (Continente) , Estudios de Seguimiento , Microesferas , Niacinamida/efectos adversos , Niacinamida/uso terapéutico , Compuestos de Fenilurea/efectos adversos , Vena Porta/patología , Sorafenib , Resultado del Tratamiento , Itrio/efectos adversos
18.
J Clin Gastroenterol ; 48(6): 491-9, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24583758

RESUMEN

BACKGROUND: Ammonia is considered to play a central role in the pathogenesis of (minimal) hepatic encephalopathy ((M)HE). Bacterial urease activity is the regulatory enzyme, and bacteria colonizing the colon were originally assumed to be the main source of urease activity. Current concepts of the pathogenesis of (M)HE focus, among other things, on ammonia, which is generated both by urease activity of intestinal bacteria and by Helicobacter pylori in the stomach. AIM: : The aim of this study was to provide a systematic review of the role of H. pylori in the pathogenesis of HE. METHODS: A systematic review was conducted following the recommendations in the Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) statement with a database search in PubMed, Scopus, and the Cochrane Database for all original contributions published from January 1950 to December 2013. As search terms in title and abstract, the following combinations were used: hepatic encephalopathy AND Helicobacter pylori, HE AND Helicobacter pylori, MHE AND Helicobacter pylori, hyperammonemia AND Helicobacter pylori, and minimal hepatic encephalopathy AND Helicobacter pylori, with a language restriction to English and German. RESULTS: Observational studies revealed conflicting results concerning a possible role of H. pylori infection in the pathogenesis of HE. Thirteen prospective clinical trials assessed the effect of H. pylori eradication in patients with HE and liver cirrhosis. Seven of these showed a beneficial effect of eradication therapy on (M)HE. All of these studies were highly diverse in design and methodology. CONCLUSIONS: Eradication therapy in H. pylori-positive cirrhotic patients may have a beneficial influence on hyperammonemia and (M)HE, but evidence from well-designed clinical studies is weak.


Asunto(s)
Infecciones por Helicobacter/complicaciones , Encefalopatía Hepática/tratamiento farmacológico , Hiperamonemia/tratamiento farmacológico , Infecciones por Helicobacter/tratamiento farmacológico , Helicobacter pylori/aislamiento & purificación , Encefalopatía Hepática/microbiología , Humanos , Hiperamonemia/complicaciones , Intestinos/microbiología , Cirrosis Hepática/tratamiento farmacológico , Cirrosis Hepática/microbiología , Ureasa/metabolismo
19.
BMC Gastroenterol ; 14: 117, 2014 Jul 03.
Artículo en Inglés | MEDLINE | ID: mdl-24990270

RESUMEN

BACKGROUND: HCC predominantly develops in the condition of chronic inflammation that has led to liver cirrhosis. A small proportion of patients with HCC is diagnosed in the non-cirrhotic liver (NCL). Data on patients with HCC in NCL in advanced stages are scarce. METHODS: A retrospective analysis was performed comparing 93 patients with HCC in NCL to 571 patients with HCC in liver cirrhosis (LC) with respect to clinical and demographic characteristics. Also factors influencing survival in patients with HCC in NCL were analyzed. RESULTS: Patients with HCC in NCL were diagnosed at older age and in more advanced tumor stages than patients with LC. More than 25% of patients with HCC in NCL presented with extrahepatic metastases. Only a minority of patients with HCC in NCL lacked any sign of hepatic damage. Risk factors for LC and risk factors for NAFLD are present in the majority of patients with HCC in NCL. The BCLC classification corresponded with the survival of patients with HCC in NCL although the therapeutic options differ from those for patients with liver cirrhosis. CONCLUSIONS: It will be one of the major challenges in the future to awake awareness of carrying a risk of hepatic malignancies in patients with chronic liver diseases apart from liver cirrhosis, especially in NAFLD. Surveillance programs need to be implemented if these are cost-effective.


Asunto(s)
Carcinoma Hepatocelular/patología , Neoplasias Hepáticas/patología , Neoplasias Primarias Múltiples/patología , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma Hepatocelular/epidemiología , Carcinoma Hepatocelular/mortalidad , Femenino , Alemania/epidemiología , Humanos , Neoplasias Hepáticas/epidemiología , Neoplasias Hepáticas/mortalidad , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Neoplasias Primarias Múltiples/epidemiología , Neoplasias Primarias Múltiples/mortalidad , Enfermedad del Hígado Graso no Alcohólico/epidemiología , Pronóstico , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Factores de Riesgo
20.
JOP ; 15(2): 165-74, 2014 Mar 10.
Artículo en Inglés | MEDLINE | ID: mdl-24618443

RESUMEN

CONTEXT: Pancreatic exocrine insufficiency is a significant problem after acute pancreatitis. OBJECTIVE: To evaluate whether oral pancreatic enzyme supplementation improves the recovery of pancreatic exocrine function and to explore the efficacy, safety and tolerability of pancreatic enzyme supplementation in patients during the refeeding period after acute pancreatitis. DESIGN: Prospective double-blind, placebo controlled, randomized study. PATIENTS: The sudy included 56 patients with acute pancreatitis. MAIN OUTCOME MEASURES: Primary efficacy variable was recovery from pancreatic exocrine insufficiency. Secondary objectives were body weight, abdominal pain, course of APACHE II score, patient's symptoms and quality of life. RESULTS: Twenty of the 56 patients showed low fecal elastase values indicating pancreatic exocrine insufficiency after acute pancreatitis. Median time to recovery from exocrine pancreatic insufficiency was 14 days in the enzyme supplementation group and 23 days in the placebo group but overall differences for primary and all but one secondary endpoint did not reach statistical significance. However, a positive tendency in favour of enzyme supplementation was found for quality of life parameters (FACT-Pa) in all subscores. There were no relevant differences between placebo and oral pancreatic enzyme supplementation detected with respect to safety and tolerability. CONCLUSION: Enzyme supplementation positively effects the course of acute pancreatitis if administered during the early refeeding phase after acute pancreatitis. There is evidence that oral pancreatic enzyme supplementation has a positive impact on the course of the disease and the global health status (less weight loss, less flatulence, improved quality of life). Oral pancreatic enzyme supplementation was safely administered and can be added to the treatment regimen of patients in a refeeding status after severe acute pancreatitis.


Asunto(s)
Amilasas/uso terapéutico , Insuficiencia Pancreática Exocrina/tratamiento farmacológico , Insuficiencia Pancreática Exocrina/etiología , Lipasa/uso terapéutico , Páncreas/enzimología , Pancreatitis/complicaciones , Pancreatitis/tratamiento farmacológico , Pancrelipasa/uso terapéutico , APACHE , Dolor Abdominal/prevención & control , Enfermedad Aguda , Administración Oral , Adulto , Anciano , Anciano de 80 o más Años , Amilasas/administración & dosificación , Amilasas/metabolismo , Peso Corporal , Método Doble Ciego , Insuficiencia Pancreática Exocrina/metabolismo , Heces , Femenino , Humanos , Lipasa/administración & dosificación , Lipasa/metabolismo , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud , Elastasa Pancreática/metabolismo , Pancreatitis/metabolismo , Pancrelipasa/administración & dosificación , Estudios Prospectivos , Calidad de Vida , Resultado del Tratamiento
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