Evidence map›Paper›PMID 34112139›Full record

ArticleBMC urology2021

Correlation between body mass index and prostate volume in benign prostatic hyperplasia patients undergoing holmium enucleation of the prostate surgery.

Ken Batai, Michael Phung, Robert Bell, Aye Lwin, Kieran A Hynes, Elinora Price, Karleen M Meiklejohn, Erika R Bracamonte, Joel T Funk

Open access · goldAbstract read
In one paragraph

Article in BMC urology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

5 citing papers in PubMed, 12 citations in OpenAlex.

  1. Comparative Analysis of 3-Year Reintervention Rates for Rezum vs. UroLift: A TriNetX Study.International journal of urology : official journal of the Japanese Urological Association · 2026
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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

9 authors at 4 institutions in 1 country.

Ken BataiDepartment of Urology, The University of Arizona, 1501 N Campbell Ave, PO Box 245077, Tucson, AZ, 85724-5077, USA.
Michael PhungDepartment of Urology, University of California Los Angeles, 10833 Le Conte Avenue, Box 951738, Los Angeles, CA, 90095-1738, USA.
Robert BellDepartment of Pathology and Immunology, Washington University in St. Louis, 660 S Euclid Ave, Campus, Box 8118, St. Louis, MO, 63110, USA.
Aye LwinDepartment of Urology, The University of Arizona, 1501 N Campbell Ave, PO Box 245077, Tucson, AZ, 85724-5077, USA.
Kieran A HynesDepartment of Surgery, University of Mississippi Medical Center, 2500 N State St, Jackson, MS, 39216, USA.
Elinora PriceDepartment of Surgery, University of Arizona, 1501 N. Campbell Ave., Tucson, AZ, 85724, USA.
Karleen M MeiklejohnDepartment of Pathology, University of Arizona, 1501 N. Campbell Ave., Tucson, AZ, 85724, USA.
Erika R BracamonteDepartment of Pathology, University of Arizona, 1501 N. Campbell Ave., Tucson, AZ, 85724, USA.
Joel T FunkDepartment of Urology, The University of Arizona, 1501 N Campbell Ave, PO Box 245077, Tucson, AZ, 85724-5077, USA. jfunk@surgery.arizona.edu.
University of Arizona · USJackson Memorial Hospital · USUniversity of California, Los Angeles · USWashington University in St. Louis · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBenign prostatic obstruction (BPO) due to benign prostatic hyperplasia (BPH) is a leading cause of morbidity in men over the age of 40. This study examined whether there was an association between body mass index (BMI) and pre-operative prostate volume and whether expression of two genes, alpha-2-macroglobulin (A2M) and transforming growth factor beta 3 (TGFB3), was correlated with BMI, pre-operative prostate volume, and age at surgery.

methodsMedical records of patients who underwent holmium enucleation of the prostate surgery for treatment of BPO were retrospectively reviewed. Surgical specimens were obtained from formalin-fixed paraffin-embedded blocks, and expression of the targeted genes was quantified using a real time PCR approach. Linear regression analysis was performed to assess association between BMI and prostate volume adjusting for demographic characteristics and co-morbidity. Spearman's correlation was used to examine whether gene expression was correlated with BMI, prostate volume, and age at surgery.

resultsA total of 278 patients were identified, including 62.9% European Americans (n = 175) and 27.7% Hispanic Americans (n = 77). BMI was significantly correlated with prostate volume (Spearman's rho = 0.123, P = 0.045). In linear regression analysis, BMI was positively associated with prostate volume (β = 0.01, P = 0.004), while hyperlipidemia was negatively associated with prostate volume (β = -0.08, P = 0.02). A trend for a positive association was also observed for diabetes (β = 0.07, P = 0.099). In the race/ethnicity stratified analysis, age at surgery showed a trend for significantly positive association with prostate volume in European Americans (β = 0.005, P = 0.08), but not in Hispanic Americans. Expression of the A2M gene in the stroma was negatively correlated with age at surgery (P = 0.006). A2M expression in the gland was positively correlated with prostate volume among older men (Age ≥ 70, P = 0.01) and overweight men (BMI 25-30, P = 0.04). TGFB3 expression in the gland was positively correlated with BMI (P = 0.007) among older men.

conclusionsThis study demonstrated the positive correlation between BMI and prostate volume. Expression of TGFB3 and A2M was correlated with BMI, prostate volume, and age at surgery.

Indexed as

Body Mass IndexLasers, Solid-StateAgedCorrelation of DataHumansMaleMiddle AgedOrgan SizeProstateProstatectomyProstatic HyperplasiaRetrospective StudiesCo-morbidityHealth disparitiesObesity

Identifiers

PMID34112139
PMCPMC8191122
OpenAlexW3172719822

What OpenQuestion holds

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LicenceCC BY
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.