Evidence map›Paper›PMID 33816694›Full record

ArticleAmerican journal of clinical and experimental urology2021

Claudin-1 down-regulation in the prostate is associated with aging and increased infiltration of inflammatory cells in BPH.

Laura E Pascal, Rajiv Dhir, Goundappa K Balasubramani, Wei Chen, Chandler N Hudson, Pooja Srivastava, Anthony Green, Donald B DeFranco, Naoki Yoshimura, Zhou Wang

Open access · greenAbstract read
In one paragraph

Article in American journal of clinical and experimental urology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

6 citing papers in PubMed, 10 citations in OpenAlex.

  1. High-Throughput Proteomic and Glycoproteomic Analyses in Benign Prostatic Hyperplasia.Journal of the American Society for Mass Spectrometry · 2026
    Article
  2. Review
  3. Chronic inflammation in benign prostatic hyperplasia: Pathophysiology and treatment options.International journal of urology : official journal of the Japanese Urological Association · 2024
    Review
  4. Article
  5. Article
  6. E-cadherin expression is inversely correlated with aging and inflammation in the prostate.American journal of clinical and experimental urology · 2021
    Article
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

10 authors at 1 institution in 1 country.

Laura E PascalDepartment of Urology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA.
Rajiv DhirDepartment of Pathology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA.
Goundappa K BalasubramaniDepartment of Epidemiology, Epidemiology Data Center, University of Pittsburgh Pittsburgh, PA, USA.
Wei ChenDepartment of Urology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA.
Chandler N HudsonDepartment of Urology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA.
Pooja SrivastavaDepartment of Pathology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA.
Anthony GreenDepartment of Pathology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA.
Donald B DeFrancoPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh School of Medicine Pittsburgh, PA, USA.
Naoki YoshimuraDepartment of Urology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA.
Zhou WangDepartment of Urology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA.
University of Pittsburgh · US

Funding

VECTOR CORE FACILITYP30CA047904 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CHRISTOPHER J. BAKKENIST · 1988 to 2026
$158.0M
University of Pittsburgh O'Brien Cooperative Research Center ProgramU54DK112079 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI DHIR, RAJIV · 2016 to 2020
$6.5M
Cellular mechanisms of androgen action and androgen-response gene EAF2 in prostate cancerR50CA211242 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI PASCAL, LAURA ELLEN · 2016 to 2020
$575k
Luminal Epithelial Junctions, Polarity, and Permeability in BPH PathogenesisR56DK107492 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WANG, ZHOU · 2016 to 2016
$92k
NCI NIH HHS P30 CA047904NCI NIH HHS R50 CA211242NIDDK NIH HHS R56 DK107492NIDDK NIH HHS U54 DK112079
6 · The paper itself

Abstract

INTRODUCTION AND

objectiveBenign prostatic hyperplasia (BPH) is an age-related disease that is frequently associated with chronic prostatic inflammation. In previous studies, we detected the presence of PSA protein in the stroma of BPH nodules and down-regulation of junction proteins E-cadherin and claudin-1. Transmission electron microscopy (TEM) imaging showed a decrease in tight junctions suggesting the luminal epithelial barrier in BPH tissues may be compromised. Recent

methodsImmunostaining of serial prostate sections from 13 BPH patients and five healthy young donors was performed for claudin-1, CD4, CD8, CD20 and CD68. H-Scores and the number of inflammatory cells were calculated for the same area in donor, normal adjacent prostate (NAP) to and BPH specimens. Quantification and statistical correlation analyses were performed.

resultsClaudin-1 immunostaining was inversely associated with increasing age, and inflammation in prostate specimens. B-cell infiltration increased with age and BPH was associated with an increased infiltration of T-cells and macrophages compared to NAP.

conclusionsThese findings suggest that aging is associated with down-regulation of claudin-1 and claudin-1 is further decreased in BPH. Claudin-1 down-regulation was associated with increased infiltration of inflammatory cells in both NAP and BPH tissues. Claudin-1 down-regulation in the aging prostate could contribute to increased prostatic inflammation, subsequently contributing to BPH pathogenesis.

Indexed as

agingBPHClaudin-1inflammationprostate

Identifiers

PMID33816694
PMCPMC8012836
OpenAlexW3143864482

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.