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Identification of Transcripts Associated with Renal Damage Due to Ureteral Obstruction as Candidate Urinary Biomarkers

ABSTRACT: Identification of Transcripts Associated with Renal Damage Due to Ureteral Obstruction as Candidate Urinary Biomarkers

PROVIDER: PRJNA379016 | ENA |

REPOSITORIES: ENA

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Identification of Transcripts Associated with Renal Damage Due to Ureteral Obstruction as Candidate Urinary Biomarkers

Project description:Renal obstruction is a common cause of renal failure in adults and children and is suspected when hydronephrosis is detected on imaging. Since not all cases of hydronephrosis are associated with renal damage, biomarkers are needed to guide intervention to relieve obstruction. We performed gene expression profiling on the kidneys from adult mice over a detailed time course after obstruction and compared these data to a neonatal model of bilateral high grade obstruction induced by conditional deletion of the calcineurin ß1 (Cnb1) gene. Using a model of short term (non-damaging) and long term (damaging) temporary obstruction, we identified which of the transcripts common to the adult and neonatal models were induced early and associated with renal damage. Using QPCR, elevated levels of several candidate RNA biomarkers of renal damage were detected in urine from obstructed mice and children undergoing surgery for ureteropelvic junction obstruction (UPJO). This SuperSeries is composed of the SubSeries listed below.

2018-02-22 | GSE96571 | GEO

miRNA microarray of mice with unilateral ureteral obstruction

Project description:To find miRNAs that involve in renal epithelial transition and renal fibrosis, we performed unilateral ureteral obstruction of mice for 7 days. After that, we harvested kidneys, and performed microarray of miRNA. Contralateral kidneys without ureteral obstruction were used as controls. miRNAs were purified from kidneys with ureteral obstruction and contralateral kidneys without ureteral obstruction. Then microarray of miRNA was performed (n=4). miRNAs up-regulated in kidneys with ureteral obsctruction compared with contralateral kidneys were sorted. We performed unilateral ureteral obstruction of mice for 7 days, and harvested kidneys.

2012-12-05 | E-GEOD-42716 | biostudies-arrayexpress

miRNA microarray of mice with unilateral ureteral obstruction

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Early molecular events mediating loss of aquaporin-2 in kidney collecting duct during ureteral obstruction

Project description:Early stages of ureteral obstruction are marked by polyuria with impaired urinary concentrating ability, associated with loss of aquaporin-2 (AQP2) expression. Most mechanistic work in unilateral ureteral obstruction (UUO) models has been done at relatively late time points, making it difficult to discriminate the early effect on collecting ducts (CDs) in gene expression. Here, we use single-tubule RNA-Seq to identity signaling pathways at earlier time points after UUO in rat models.

2022-07-20 | GSE174289 | GEO

Axl targeting in experimental unilateral ureteral obstruction

Project description:We investigated if Axl receptor tyrosine kinase was up-regulated in unilateral ureteral obstruction (UUO) and if blocking of Axl by a small molecule called BGB324 (also called Bemcentinib) reduces fibrosis development in the ligated kidney as compared to treatment with its vehicle alone.

2019-03-01 | GSE123674 | GEO

Identification of transcripts associated with renal damage due to ureteral obstruction as candidate urinary biomarkers.

Project description:Renal obstruction is a common cause of renal failure in adults and children and is suspected when hydronephrosis is detected on imaging. Because not all cases of hydronephrosis are associated with renal damage, biomarkers are needed to guide intervention to relieve obstruction. We performed gene expression profiling on the kidneys from adult mice over a detailed time course after obstruction and compared these data with a neonatal model of bilateral high-grade obstruction induced by conditional deletion of the calcineurin ?1 gene. Having identified a set of 143 transcripts modulated in both adult and neonatal obstruction, we tested their expression in a model of short-term obstruction (1 day), where renal damage is transient and reversible, and long-term obstruction (5 days), where significant renal damage is permanent. A significant number of transcripts increased early after obstruction, and later normalized, while 26 transcripts remained elevated 10 and 28 days after relief of 5 days of ureteral obstruction. With the use of qPCR, elevated levels of several of these candidate RNA biomarkers of renal damage were detected in urine from obstructed mice. In addition, several of these candidate RNA biomarkers of damage resulting from obstruction were detectable in catheterized urine samples from children undergoing surgery for ureteropelvic junction obstruction. Measurement of urinary transcripts modulated in response to renal obstruction could serve as biomarkers of renal damage with important clinical applications.

| S-EPMC6087789 | biostudies-literature

Axl targeting in experimental unilateral ureteral obstruction

Project description:Axl targeting in experimental unilateral ureteral obstruction

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Microarray analysis revealed novel genes and pathways associated with neonatal unilateral ureteral obstruction

Project description:Congenital obstructive nephropathy (CON) is the leading cause of pediatric chronic kidney diseases with high morbidity and mortality.To identify differentially expressed genes, microarray analysis was performed using the unilateral ureteral obstruction (UUO)-induced neonatal rat model of CON.

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The ureters of Col17a1-KO mice at 4 days after unilateral ureteral obsruction

Project description:Collagen 17A1 (COL17A1) is induced in urothelium under disease conditions of urinary system organs, such as chronic nephritis and urinary obstruction. Thus, the ureters of Col17a1-knock out (KO) mice were injured by unilateral ureteral obsruction (UUO), and the gene expression was compared with those of wild-tyoe (WT).

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Exploring new pathways involved during experimental renal fibrogenesis in the Unilateral Ureteral Obstruction

Project description:Chronic kidney disease (CKD) is a burden for Public Health and concerns millions of individuals worldwide. Independently of the cause, CKD is secondary to the replacement of functional renal tissue by extra-cellular matrix proteins (i.e fibrosis) that progressively impairs kidney function. The pathophysiological pathways that control the development of renal fibrosis are common to most of the nephropathies involving native kidneys or kidney grafts. Unfortunately, very few treatments are available to stop renal fibrosis and most of the therapeutic strategies are often barely able to slow down the progression of fibrogenesis in native kidneys. Therefore, it is mandatory to discover new therapeutic pathways to stop renal fibrosis. Our objective is to study new pathways involved in renal fibrosis. We thus decided to use the model of Unilateral Ureteral renal Obstruction in mice, a fast and reproducible experimental model of renal fibrosis. We studied renal fibrosis using experimental model of ureteral unilateral obstruction in mice, which was performed by complete ligation of the left ureter. The control lateral right kidney served as internal control.

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