Evidence map›Paper›PMID 22579999›Full record

ArticleRegulatory peptides2012

Regulation of IGF-1 but not TGF-β1 by NGF in the smooth muscle of the inflamed urinary bladder.

Qing L Zhang, Li-Ya Qiao

Open access · greenAbstract read
In one paragraph

Article in Regulatory peptides, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.3field-weighted citation impact, top 21% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 18 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Qing L ZhangDepartment of Physiology and Biophysics, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States.
Li-Ya Qiao
Virginia Commonwealth University · US

Funding

Neurotrophins and Neuropeptides in Colon and Bladder HypersensitivityR01DK077917 · NIDDK · VIRGINIA COMMONWEALTH UNIVERSITY · PI QIAO, LIYA · 2008 to 2016
$2.8M
NIDDK NIH HHS DK077917NIDDK NIH HHS R01 DK077917
6 · The paper itself

Abstract

Intraperitoneal injection of cyclophosphamide (CYP) causes hemorrhagic cystitis with excess growth of muscular layer leading to bladder hypertrophy; this could be attributable to changes in the expression profiles of growth factors in the inflamed urinary bladder. The growth factors characterized in the current study include nerve growth factor (NGF), insulin-like growth factor (IGF)-1, and transforming growth factor (TGF)-β1. We found that following CYP injection for 8 h and 48 h, the mRNA levels of all three factors were increased in the inflamed bladder when compared to control. The level of NGF mRNA was mainly increased in the urothelium layer while the levels of IGF-1 mRNA and TGF-β1 mRNA were increased in the smooth muscle layer. The level of NGF high affinity receptor TrkA mRNA was also increased in both the urothelium and the smooth muscle layers during bladder inflammation. When we blocked NGF action with NGF neutralizing antibody in vivo, we found that the up-regulation of IGF-1 in the inflamed bladder was reversed while the up-regulation of TGF-β1 was not affected by NGF neutralization. The effect of NGF on regulating IGF-1 expression was further confirmed in bladder smooth muscle culture showing that exogenous NGF increased the mRNA level of IGF-1 after 30 min to 1 h stimulation. These results suggested that bladder inflammation induced region-specific changes in the expression profiles of NGF, IGF-1 and TGF-β1. The up-regulation of NGF in the urothelium may have a role in affecting bladder smooth muscle cell physiology by regulating IGF-1 expression.

Indexed as

AnimalsAntibodies, NeutralizingCells, CulturedCyclophosphamideCystitisGene Expression RegulationInsulin-Like Growth Factor IMaleMuscle, SmoothNerve Growth FactorRatsRats, Sprague-DawleyReceptor, trkARNA, MessengerTime FactorsTransforming Growth Factor beta1Antibodies, NeutralizingCyclophosphamideinsulin-like growth factor-1, ratInsulin-Like Growth Factor INerve Growth FactorReceptor, trkARNA, MessengerTgfb1 protein, ratTransforming Growth Factor beta1

Identifiers

PMID22579999
PMCPMC3383910
OpenAlexW1968659886

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.