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Transcriptome changes in 2,3-butanedione induced bronchiolitis obliterans in rats

ABSTRACT: Transcriptome changes in 2,3-butanedione induced bronchiolitis obliterans in rats

PROVIDER: PRJNA1172638 | ENA |

REPOSITORIES: ENA

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Transcriptome changes in 2,3-butanedione induced bronchiolitis obliterans in rats

Project description:Bronchiolitis obliterans (BO) is a destructive fibrotic lung disease, which can be partly induced by 2,3-butanedione (also known as diacetyl, DA). However, the mechanism underlying the effects of DA on BO is not clear. In the present study, a bioinformatics analysis was performed using DA-treated or untreated lung tissues of rats.

2025-01-22 | GSE279398 | GEO

Gene expression in 2,3-Pentanedione Induced Bronchiolitis Oblliterans

Project description:Fibrotic and nonfibrotic bronchial tissues were collected from lungs of pentandione exposed rats by laser capture microdissection. Analogous tissue was collected from air-exposed controls. Miroarray analysis revealed a number of DEGs Male Wistar Han rats were exposed to either air or 200 ppm 2,3-pentanedione for 2 wks. Fibrotic bronchial lesions were collected form exposed rats and analogous bronchial tissue was collected from controls. RNA was extracted and amplified to cDNA which was hybridized to Affymetrix microarrays to Rat Gene 1.0 ST Array. Transcript profiles from control and treated rats were compared.

2015-03-03 | E-GEOD-52761 | biostudies-arrayexpress

Gene expression in 2,3-Pentanedione Induced Bronchiolitis Oblliterans

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Acute viral bronchiolitis

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A window into disease: Protein signatures of remodeled airways in transplanted lungs with Bronchiolitis Obliterans Syndrome

Project description:Background: Bronchiolitis obliterans syndrome (BOS), the most common form of chronic lung allograft dysfunction (CLAD), is the major limitation to long-term survival after lung transplantation. The patho-anatomical correlate is progressive, fibrotic occlusion of the small airways, so-called obliterative bronchiolitis (OB) –lesions, ultimately leading to organ failure. The molecular composition of these lesions is unknown. Methods: By combining laser-capture microdissection (LCM) and optimized sample preparation protocols for mass spectrometry (MS) we analyzed end-stage OB-lesions identified in explanted lungs from four end-stage BOS patients. Immunohistochemistry and immunofluorescence were used to follow selected proteins of interest on the tissue level. Results: We established protein signatures for in total 15 OB-lesions. A set of 12 proteins identified in all lesions included both distinct structural proteins (collagen type IV and VI) and cellular components (actins, vimentin, tryptase). Each respective lesion exhibited a unique composition of proteins (on average n=66), thereby mirroring the histomorphological variation of the lesions. Conclusions: Even though being distinct and focal pathologic events, OB-lesions showed considerable variations in their protein content, most likely reflecting different disease pathways. Combining spatial information and advanced protein identification, this study provides molecular and morphological insights essential for a better understanding of the development of chronic rejection after lung transplantation.

2021-05-19 | PXD014171 | Pride

The mononuclear phagocyte system contributes to fibrosis in post-transplant Obliterans Bronchiolitis

Project description:The mononuclear phagocyte system contributes to fibrosis in post-transplant Obliterans Bronchiolitis

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Plasma Biomarkers of Postinfectious Bronchiolitis Obliterans and Asthma in Children

Project description:Asthma and postinfectious bronchiolitis obliterans (PIBO) are chronic lung diseases characterized by recurrent episodes of wheezing. Mycoplasma, adenovirus, and respiratory syncytial virus infections can trigger both asthma and PIBO. These two diseases have common etiologic mechanisms that cause airway epithelial injury. They are often difficult to differentiate clinically in preschool children because both are exacerbated by viral infections and respond similarly to steroids and β2 agonists. PIBO, which is occasionally observed in children, is diagnosed through characteristic findings of air trapping on computed tomography or in biopsy samples of lung tissue. However, researchers have not clearly identified the specific blood markers that can distinguish these diseases or the differences in the mechanisms of development. We performed proteomic analysis of plasma to identify specific biomarkers that can be helpful in differentiating asthma from PIBO. This study discovered plasma biomarker candidates by measuring plasma proteome sequential window acquisition of all theoretical mass spectra (SWATH-MS) and included 30 healthy children, 18 with asthma and 15 with PIBO. was used to measure proteins in plasma samples. We identified and quantified 354 proteins across all 63 samples in the SWATH-MS analysis.

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Hepatic transcriptomic alterations for tetrabromobisphenol A-bis(2,3-dibromopropyl ether) (TBBPA-DBPE) after 5-day exposure in rats

Project description:To identify liver transcripts differentially expressed due to treatment with tetrabromobisphenol A-bis(2,3-dibromopropyl ether) (TBBPA-DBPE), we collected RNA from male Harlan Sprague Dawley rats exposed to 0, 0.1, 0.94, 9.4, 94.3 or 943 mg/kg TBBPA.DBPE, 5 days after exposure for animals 7 weeks of age. These samples were interrogated with the Affymetrix Rat Genome 230 2.0 GeneChip array. A total of 0,0,0,0,0, and 0 gene transcripts were differentially expressed due to TBBPA.DBPE treatment after exposure to 0.1, 0.94, 9.4, 94.3 or 943 mg/kg TBBPA.DBPE (false discovery rate (FDR) < 0.05).

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