Project description:Glomus tumors (GT) are perivascular tumors mostly occurring in the distal extremities. Rare cases occur in the digestive tract and may be misdiagnosed with neuroendocrine or gastrointestinal stromal tumors. We aimed to specify the features of GT of the upper digestive tract. We investigated two cases using whole exome sequencing (WES) and RNA-sequencing, and present clinical, histological, phenotypic and molecular features of 16 cases. WES did not reveal any commonly involved cellular pathway. By contrast, RNA-sequencing disclosed a t(1:5)(p13;q32) translocation between MIR143HG and NOTCH2 in both cases. The deducted fusion protein sequence corresponded to the NOTCH2 intracellular domain known as NICD2, which acts as transcription factor. These data were confirmed by high expression of the transcripts of genes targeted by NOTCH cellular pathway (HES and HEY gene families). In our retrospective multicentric series of 16 GT of upper digestive tract MIR143HG-NOTCH2 translocation was detected in 14 (88%) cases. By contrast, it was present in only 2/6 (33%) GT of the distal extremities. Most digestive GT raised from the stomach (n=13), and the others from duodenal (2) or oesophagous (1). All digestive GT were positive for α-smooth muscle actin and transgelin, and negative for cytokeratin AE1/AE3, chromogranine, DOG1, KIT and S100. Most cases were positive for H-caldesmon (n=14) and/or for synaptophysin (n=10). Desmin, CD34 or CD56 were positive in only one case each. Nuclear expression of NOTCH2 was detected in the 14 cases containing the fusion transcripts. The present study shows that MIR143HG-NOTCH2 translocation is present in most digestive GT. This fusion transcript is associated with activation of the NOTCH2 pathway and may drive tumor development. Detection of nuclear NOTCH2 expression may be helpful for diagnosis.

2019-08-31 | GSE118896 | GEO

Metagenome-assembled genomes in digestive tract of Buffalo

Project description:Metagenome-assembled genomes in digestive tract of Buffalo

| PRJEB43196 | ENA

Metaproteomics on the digestive tract from Gammarus fossarum, an environmentally relevant sentinel.

Project description:Presentation of a new data treatment methodology for investigating the full range of biomasses and metabolic activities of the holobiont components from the digestive tract of Gammarus fossarum. Two tissues, intestine and hepatopancreatic caecum from individual animals were compared. Three animals have been analyzed in technical duplicates.

2021-09-09 | PXD016248 | Pride

Measurement and Analysis of Gas Composition in Digestive Tract

Project description:The purpose of this study is to detect the concentration of various gases，including hydrogen, methane, hydrogen sulfide, nitric oxide in different parts of the digestive tract by a safe and direct method, and to establish a human digestive tract gas profiles. Analyze the differences in gas components in different segments of the digestive tract in patients with different diseases, and analyze the correlation between specific gases and digestive tract diseases and non-specific symptoms.

| 14702 | ecrin-mdr-crc

Proteome of Triatoma infestans digestive tract

Project description:Triatoma infestans are insect triatomines and vectors of the protozoan Trypanosoma cruzi responsible for human Chagas' disease. Considering that T. cruzi multiplies inside the triatomine digestive tract (TDT), the analysis of the TDT protein profile is an essential step to understand TDT physiology during T. cruzi infection. To characterize the protein profile of TDT of T. infestans, a shotgun liquid chromatography-tandem mass spectrometry (LC-MS/MS) approach was applied in this report.

| MSV000086192 | MassIVE

Proteome of Dipetalogaster maxima digestive tract

Project description:Dipetalogaster maxima are insect triatomines and vectors of the protozoan Trypanosoma cruzi responsible for human Chagas' disease. Considering that T. cruzi multiplies inside the triatomine digestive tract (TDT), the analysis of the TDT protein profile is an essential step to understand TDT physiology during T. cruzi infection. To characterize the protein profile of TDT of D. maxima, a shotgun liquid chromatography-tandem mass spectrometry (LC-MS/MS) approach was applied in this report.

| MSV000086189 | MassIVE

Proteome of Rhodnius prolixus digestive tract

Project description:Rhodnius prolixus are insect triatomines and vectors of the protozoan Trypanosoma cruzi responsible for human Chagas' disease. Considering that T. cruzi multiplies inside the triatomine digestive tract (TDT), the analysis of the TDT protein profile is an essential step to understand TDT physiology during T. cruzi infection. To characterize the protein profile of TDT of R. prolixus, a shotgun liquid chromatography-tandem mass spectrometry (LC-MS/MS) approach was applied in this report.

| MSV000086191 | MassIVE

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