Evidence map›Paper›PMID 18314176›Full record

ArticleUrology2008

Elevated epithelial expression of interleukin-8 correlates with myofibroblast reactive stroma in benign prostatic hyperplasia.

Isaiah G Schauer, Steven J Ressler, Jennifer A Tuxhorn, Truong D Dang, David R Rowley

Abstract read
In one paragraph

Article in Urology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 2 pooled it
6.3field-weighted citation impact, top 3% 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

52 citing papers in PubMed, 2 syntheses or guidelines pooled it, 86 citations in OpenAlex.

  1. Pooled it
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  5. Intrinsic and extrinsic factors causing hyperplasia of the prostate.International journal of urology : official journal of the Japanese Urological Association · 2024
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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

5 authors at 1 institution in 1 country.

Isaiah G SchauerDepartment of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA.
Steven J Ressler
Jennifer A Tuxhorn
Truong D Dang
David R Rowley
Baylor College of Medicine · US

Funding

TRANSGENIC MOUSE MODELS OF PROSTATE CANCERU01CA084296 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI GREENBERG, NORMAN MICHAEL · 1999 to 2008
$7.6M
REPRODUCTIVE BIOLOGY: REGULATORY MECHANISMST32HD007165 · NICHD · BAYLOR COLLEGE OF MEDICINE · PI O'MALLEY, BERT W · 1985 to 2015
$5.6M
MESENCHYMAL DERIVED GROWTH FACTORS IN PROSTATIC CANCERR01CA058093 · NCI · BAYLOR COLLEGE OF MEDICINE · PI ROWLEY, DAVID R · 1992 to 2013
$3.3M
STROMAL GROWTH FACTORS IN BENIGN PROSTATIC HYPERPLASIAR01DK045909 · NIDDK · BAYLOR COLLEGE OF MEDICINE · PI ROWLEY, DAVID R · 1992 to 2003
$1.0M
NCI NIH HHS R01 CA058093NCI NIH HHS R01-CA058093NCI NIH HHS U01 CA084296NCI NIH HHS U01-CA84296NICHD NIH HHS 5-T32-HD07165NICHD NIH HHS T32 HD007165NIDDK NIH HHS R01 DK045909NIDDK NIH HHS R01-DK045909
6 · The paper itself

Abstract

objectivesNumerous inflammatory diseases display elevated interleukin (IL)-8, and most are associated with a reactive stroma. IL-8 expression is also elevated in benign prostatic hyperplasia (BPH), yet little is known about reactive stroma in BPH. Whether a reactive stroma response exists in BPH, whether this correlates with elevated IL-8, and whether IL-8 can induce a reactive stroma phenotype have not been determined. This study was designed to specifically address these issues.

methodsNormal prostate transition zone tissue and BPH specimens, as identified by the Baylor College of Medicine pathology department, were examined by quantitative immunohistochemistry to correlate IL-8, smooth muscle alpha-actin, vimentin, calponin, and tenascin-C. In addition, human prostate stromal cell cultures were used to evaluate the effect of IL-8 on the expression of reactive stroma biomarkers.

resultsBPH nodules exhibited elevated epithelial IL-8 immunoreactivity, and this correlated with elevated smooth muscle alpha-actin, reduced calponin, and altered deposition of tenascin-C, relative to the normal prostate transition zone tissue (P <0.05). Multiple vimentin-positive prostate stromal fibroblast cultures were induced by IL-8 to also co-express smooth muscle alpha-actin and tenascin-C, typical of a reactive stroma myofibroblast phenotype.

conclusionsThese data show that BPH reactive stroma is fundamentally different from normal prostate fibromuscular stroma and is typified by the emergence of a reactive stroma myofibroblast phenotype. This reactive stroma pattern correlated spatially with IL-8 elevation in adjacent epithelium. Additionally, IL-8 induced expression of myofibroblast markers in human prostate fibroblasts in vitro. These results suggest that IL-8 acts as a regulator of BPH reactive stroma and is therefore a potential therapeutic target.

Indexed as

ActinsBlotting, WesternCalcium-Binding ProteinsCalponinsCell LineEpitheliumFibroblastsHumansImmunohistochemistryInterleukin-8MaleMicrofilament ProteinsPhenotypeProstateProstatic HyperplasiaStromal CellsActinsCalcium-Binding ProteinsCalponinsInterleukin-8Microfilament ProteinsTenascinVimentin

Identifiers

PMID18314176
PMCPMC2528841
OpenAlexW2143841173

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.