Dataset Information

Fibroblast growth factor 2 promotes bladder hypertrophy caused by partial bladder outlet obstruction

ABSTRACT: The current study aims to investigate molecular alterations and biomarkers associated with partial BOO (PBOO) in rats.TMT-Labeling Proteomic Analysis of PBOO Bladder Tissues at Week 5.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Rattus Norvegicus (rat)

TISSUE(S): Bladder

DISEASE(S): Bladder Neck Obstruction

SUBMITTER: Zhenxing Yang

LAB HEAD: Zhenxing Yang

PROVIDER: PXD024378 | Pride | 2021-09-10

REPOSITORIES: Pride

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Fibroblast Growth Factor 2 Promotes Bladder Hypertrophy Caused by Partial Bladder Outlet Obstruction.

Gao Ye Y Liu Peilin P He Fan F Yang Xingliang X Wu Ronghua R Chen Wei W Li Longkun L Yang Zhenxing Z

Frontiers in cell and developmental biology 20210330

Non-invasive biomarkers to identify patients with bladder outlet obstruction (BOO)-related dysfunction are still needed to guide clinical practice. The current study aims to investigate molecular alterations and biomarkers associated with partial BOO (PBOO) in rats. Sprague-Dawley rats were used to establish the BOO model. Serum samples from 60 patients with benign prostatic hyperplasia (BPH) were used for enzyme-linked immunosorbent assay analysis. RNA sequencing and TMT-labeling proteomic anal ...[more]

PMID: 33859983

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Project description:PurposePosterior urethral valves are the most common cause of partial bladder outlet obstruction in the pediatric population. However, to our knowledge the etiology and the detailed mechanisms underlying pathological changes in the bladder following partial bladder outlet obstruction remain to be elucidated. Recent findings suggest that hypoxia and associated up-regulation of HIFs (hypoxia-inducible factors) have a key role in partial bladder outlet obstruction induced pathology in the bladder. We examined the effects of pharmacological inhibition of HIF pathways by 17-DMAG (17-(dimethylaminoethylamino)-17-demethoxygeldanamycin) in pathophysiological phenotypes after partial bladder outlet obstruction.Materials and methodsPartial bladder outlet obstruction was surgically created in male C57BL/6J mice. The animals received oral administration of 17-DMAG or vehicle daily starting from the initiation of obstruction up to 5 days. Sham operated mice served as controls. Bladders were harvested from each group 2, 4 and 7 days postoperatively, and analyzed for histological and biochemical changes. Bladder function was assessed by in vitro muscle contractility recordings.ResultsPartial bladder outlet obstruction caused a significant increase in the bladder mass accompanying enhanced collagen deposition in the bladder wall while 17-DMAG treatment suppressed those increases. Treatment with 17-DMAG attenuated the degree of up-regulation of HIFs and their target genes involving the development of tissue fibrosis in obstructed bladders. Treatment with 17-DMAG improved the decreased responses of obstructed bladder strips to electrical field stimulation and KCl.ConclusionsIn vivo 17-DMAG treatment decreased partial bladder outlet obstruction induced pathophysiological changes in the bladder. HIF pathway inhibition has a potential clinical implication for the development of novel pharmacological therapies to treat bladder pathology associated with partial bladder outlet obstruction.

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