Evidence map›Paper›PMID 19267854›Full record

ArticleThe journal of sexual medicine2009

TNF-alpha infusion impairs corpora cavernosa reactivity.

Fernando S Carneiro, Saiprazad Zemse, Fernanda R C Giachini, Zidonia N Carneiro, Victor V Lima, R Clinton Webb, Rita C Tostes

Open access · hybridAbstract read
In one paragraph

Article in The journal of sexual medicine, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

19 citing papers in PubMed, 43 citations in OpenAlex.

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  15. Is there a link between soft drinks and erectile dysfunction?Central European journal of urology · 2011
    Review
  16. Emerging role for TNF-α in erectile dysfunction.The journal of sexual medicine · 2010
    Review
  17. Review
  18. Article
  19. 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

7 authors at 2 institutions in 2 countries.

Fernando S CarneiroInstitute of Biomedical Sciences, University of Sao Paulo, Pharmacology, Sao Paulo, SP, Brazil. fcarneiro@mcg.edu
Saiprazad Zemse
Fernanda R C Giachini
Zidonia N Carneiro
Victor V Lima
R Clinton Webb
Rita C Tostes
Augusta University · USUniversidade de São Paulo · BR

Funding

Vascular Rho-kinase Signaling in Angiotensin II hypertenP01HL074167 · NHLBI · MEDICAL COLLEGE OF GEORGIA (MCG) · PI WEBB, R CLINTON · 2004 to 2008
$10.5M
Nitric Oxide Inhibits RhoA/Rho-kinase in Penile ErectionR01HL071138 · NHLBI · MEDICAL COLLEGE OF GEORGIA (MCG) · PI WEBB, R CLINTON · 2003 to 2011
$2.9M
NHLBI NIH HHS HL71138NHLBI NIH HHS HL74167NHLBI NIH HHS P01 HL074167NHLBI NIH HHS R01 HL071138
6 · The paper itself

Abstract

introductionErectile dysfunction (ED), as well as cardiovascular diseases (CVDs), is associated with endothelial dysfunction and increased levels of proinflammatory cytokines, such as tumor necrosis factor-alpha (TNF-alpha).

aimWe hypothesized that increased TNF-alpha levels impair cavernosal function.

methodsIn vitro organ bath studies were used to measure cavernosal reactivity in mice infused with vehicle or TNF-alpha (220 ng/kg/min) for 14 days. Gene expression of nitric oxide synthase isoforms was evaluated by real-time polymerase chain reaction.

main outcome measuresCorpora cavernosa from TNF-alpha-infused mice exhibited decreased nitric oxide (NO)-dependent relaxation, which was associated with decreased endothelial nitric oxide synthase (eNOS) and neuronal nitric oxide synthase (nNOS) cavernosal expression.

resultsCavernosal strips from the TNF-alpha-infused mice displayed decreased nonadrenergic-noncholinergic (NANC)-induced relaxation (59.4 +/- 6.2 vs. control: 76.2 +/- 4.7; 16 Hz) compared with the control animals. These responses were associated with decreased gene expression of eNOS and nNOS (P < 0.05). Sympathetic-mediated, as well as phenylephrine (PE)-induced, contractile responses (PE-induced contraction; 1.32 +/- 0.06 vs. control: 0.9 +/- 0.09, mN) were increased in cavernosal strips from TNF-alpha-infused mice. Additionally, infusion of TNF-alpha increased cavernosal responses to endothelin-1 and endothelin receptor A subtype (ET(A)) receptor expression (P < 0.05) and slightly decreased tumor necrosis factor-alpha receptor 1 (TNFR1) expression (P = 0.063).

conclusionCorpora cavernosa from TNF-alpha-infused mice display increased contractile responses and decreased NANC nerve-mediated relaxation associated with decreased eNOS and nNOS gene expression. These changes may trigger ED and indicate that TNF-alpha plays a detrimental role in erectile function. Blockade of TNF-alpha actions may represent an alternative therapeutic approach for ED, especially in pathologic conditions associated with increased levels of this cytokine.

Indexed as

Erectile DysfunctionAnimalsEndothelium, VascularGene ExpressionInjectionsIn Vitro TechniquesMaleMiceMuscle, SmoothNeuronsNitric Oxide SynthasePenisTumor Necrosis Factor-alphaVasodilationNitric Oxide SynthaseTumor Necrosis Factor-alpha

Identifiers

PMID19267854
PMCPMC2701672
OpenAlexW2111456001

What OpenQuestion holds

Textmetadata
LicenceTDM
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.