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Inverted Meckel’s diverticulum diagnosed using capsule endoscopy: A case report

World Journal of Gastroenterology 2021年第36期27卷 6154-6160页

作者： Ismael El Hajra martínez marta Calvo joséluis martínez-porras Lucia Gomez-Pimpollo Garcia jose L Rodriguez Carmen Leon joséluis Calleja Panero Department of Gastroenterology Hospital Universitario Puerta de HierroMadrid 28222Spain Department of Radiology Hospital Universitario Puerta de HierroMadrid 28222Spain Department of Diagnostic Pathology Hospital Universitario Puerta de HierroMadrid 28222Spain Department of Surgery Hospital Universitario Puerta de HierroMadrid 28222Spain

BACKGROUND Meckel’s diverticulum is a common asymptomatic congenital gastrointestinal ***,its presentation as an inverted Meckel's diverticulum is a rare complication,of which few cases have been reported in the *** SUMMARY Here,we report the case of a 33-year-old man with iron deficiency anemia without manifestation of gastrointestinal *** upper gastrointestinal endoscopy and total colonoscopy were performed,but no abnormalities were found within the observed ***,a capsule endoscopy was performed and offered us a clue to subsequently confirm the diagnosis of inverted Meckel's diverticulum via computed tomography *** intestinal resection surgery was *** final pathology report described a Meckel’s *** Since inverted Meckel's diverticulum is an uncommon disease and its clinical presentation is not specific,it may go undetected by capsule *** diagnosis and treatment of this disease requires a high index of clinical suspicion.

关键词： Inverted Meckel’s diverticulum Capsule endoscopy Anemia study Small bowel tumor Case report

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Estimation of visceral fat is useful for the diagnosis of significant fibrosis in patients with non-alcoholic fatty liver disease

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World Journal of Gastroenterology 2020年第42期26卷 6658-6668页

作者： marta Hernández-Conde Elba Llop Carlos Fernández Carrillo Beatriz Tormo Javier Abad luis Rodriguez Christie Perelló marta López Gomez joséluis martínez-porras Natalia Fernández Puga Maria Trapero-Marugan Enrique Fraga Carlos Ferre Aracil joséluis Calleja Panero Gastroenterology and Hepatology Department IDIPHISAHospital Universitario Puerta de Hierro-MajadahondaMadrid 28222Spain Centro de Investigación Biomédica en Red en elÁrea temática de Enfermedades Hepáticas Instituto de Salud Carlos IIIMadrid 28029Spain

BACKGROUND Obesity is a risk factor for non-alcoholic fatty liver disease(NAFLD),although obese patients with NAFLD do not always develop significant *** distribution of body fat could predict the risk of NAFLD *** To investigate the role of bioelectrical impedance-estimated visceral fat(VF)in assessing NAFLD *** In this cross-sectional study,patients with biopsy-proven NAFLD were prospectively *** patients underwent anthropometric evaluation,blood tests and bioelectrical impedance *** Between 2017 and 2020,119 patients were included[66.4%male,56 years(SD 10.7),62.2%obese,61.3%with metabolic syndrome].Sixty of them(50.4%)showed significant fibrosis(≥F2)in liver ***,VF and metabolic syndrome were associated with significant fibrosis(61 years vs 52 years,16.4 vs 13.1,73.3%vs 49.2%,respectively;P<0.001 for all).In the multivariate analysis,VF and age were independently associated with significant fibrosis(VF,OR:1.11,95%CI:1.02-1.22,P=0.02;age,OR:1.08,95%CI:1.03-1.12,P<0.01).A model including these variables showed and area under the receiver operating characteristic curve(AUROC)of 0.75,which was not inferior to transient elastography or NAFLD fibrosis score *** developed a nomogram including age and VF for assessing significant fibrosis in routine *** VF is a surrogate marker of liver fibrosis in patients with *** impedance analysis is an inexpensive and simple method that can be combined with age to guide patient referral when other resources may be unavailable.

关键词： Non-alcoholic fatty liver disease Visceral fat Liver fibrosis Bioimpedanciometry Metabolic syndrome Obesity

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C3G contributes to platelet activation and aggregation by regulating major signaling pathways

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Signal Transduction and Targeted Therapy 2020年第1期5卷 2103-2117页

作者： Sara Gutiérrez-Herrero Cristina Fernández-Infante luis Hernández-Cano Sara Ortiz-Rivero Carlos Guijas Víctor martín-Granado joséRamón González-porras Jesús Balsinde Almudena porras Carmen Guerrero Instituto de Biología Molecular y Celular del Cáncer(IMBCC) University of Salamanca-CSICSalamancaSpain Instituto de Investigación Biomédica de Salamanca(IBSAL) SalamancaSpain Instituto de Biología y Genética Molecular(IBGM) Consejo Superior de Investigaciones Científicas(CSIC)University of ValladolidValladolidSpain Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas(CIBERDEM) MadridSpain Departamento de Hematologiá Hospital Universitario de Salamanca(HUS)SalamancaSpain Departamento de Bioquímica y Biología Molecular Facultad de FarmaciaComplutense University of Madrid.Instituto de Investigación Sanitaria del Hospital Clínico San Carlos(IdISSC)MadridSpain Departamento de Medicina University of SalamancaSalamancaSpain

C3G is a GEF(guanine nucleotide exchange factor)for Rap GTPases,among which the isoform Rap1b is an essential protein in platelet *** transgenic mouse models with platelet-specific overexpression of C3G or mutant C3GΔCat,we have unveiled a new function of C3G in regulating the hemostatic function of platelets through its participation in the thrombin-PKCRap1b pathway.C3G also plays important roles in angiogenesis,tumor growth,and metastasis through its regulation of the platelet *** addition,C3G contributes to megakaryopoiesis and ***,we used a platelet-specific C3G-KO mouse model to further support the role of C3G in hemostasis.C3G-KO platelets showed a significant delay in platelet activation and aggregation as a consequence of the defective activation of Rap1,which resulted in decreased thrombus formation in ***,we explored the contribution of C3G-Rap1b to platelet signaling pathways triggered by thrombin,PMA or ADP,in the referenced transgenic mouse model,through the use of a battery of specific *** found that platelet C3G is phosphorylated at Tyr504 by a mechanism involving *** phosphorylation was shown to be positively regulated by ERKs through their inhibition of the tyrosine phosphatase ***,C3G participates in the ADP-P2Y12-PI3K-Rap1b pathway and is a mediator of thrombin-TXA2 ***,it inhibits the synthesis of TXA2 through cPLA2 *** together,our data reveal the critical role of C3G in the main pathways leading to platelet activation and aggregation through the regulation of Rap1b.

关键词： C3G platelet activation

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Platelet Endothelial Cell Adhesion Molecule (PECAM-1) Expression in Malignant Human Tumours and their Metastases

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Journal of Cancer Therapy 2010年第2期1卷 66-70页

作者： Juan R de la Haba Rodríguez Ignacio porras Quintela Gema Pulido Cortijo Concepción Lucena martínez Javier García Corbacho Enrique Aranda Aguilar 1Medical Oncology and Pathology Departments Reina Sofía University Hospital Córdoba Spain Department of Cell Biology Physiology and Immunology University of Cordoba Córdoba Spain Department of Cell Biology Physiology and Immunology University of Cordoba Córdoba Spain. Medical Oncology and Pathology Departments Reina Sofía University Hospital Córdoba Spain

PECAM-1 is an adhesion molecule that plays an important role in the process of tumour disease dissemination since a function in transendothelial migration, angiogenesis and immune response has been shown for this membrane protein. Nevertheless the expression of PECAM-1 protein in solid tumours is a controversial matter and it has not been clarified so far. Thus, the aim of our study was to investigate PECAM-1 expression by immunohistochemistry in primary carci-nomas from colon, breast, bladder, ovary and kidney, and in their metastases. In addition an example of primary and metastatic melanoma was also investigated. We found that PECAM-1 is expressed in the metastases of all primary car-cinomas that express PECAM-1 (colorectal, breast and urothelial bladder). By the contrary metastases from primary carcinomas non-expressing PECAM-1 are also negative for expression. In conclusion, our findings support a possible role of this molecule in metastatic development of a subset of malignant human epithelial tumours.

关键词： PECAM-1 CD31 Angiogenesis Neoplasms Immunohistochemistry

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