Evidence map›Paper›PMID 25302850›Full record

ArticleThe journal of sexual medicine2014

Topically applied NO-releasing nanoparticles can increase intracorporal pressure and elicit spontaneous erections in a rat model of radical prostatectomy.

Moses Tar, Pedro Cabrales, Mahantesh Navati, Brandon Adler, Parimala Nacharaju, Adam J Friedman, Joel Friedman, Kelvin P Davies

Open access · greenAbstract read
In one paragraph

Article in The journal of sexual medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

15 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Biodegradable Nanoparticles for Delivery of Therapeutics in CNS Infection.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2017
    Review
  11. Role of Nanotechnology in Erectile Dysfunction Treatment.The journal of sexual medicine · 2017
    Review
  12. Article
  13. Developments in the management of Chagas cardiomyopathy.Expert review of cardiovascular therapy · 2015
    Review
  14. Article
  15. Review
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

8 authors at 4 institutions in 1 country.

Moses TarDepartment of Urology, Albert Einstein College of Medicine, New York, NY, USA.
Pedro Cabrales
Mahantesh Navati
Brandon Adler
Parimala Nacharaju
Adam J Friedman
Joel Friedman
Kelvin P Davies
Albert Einstein College of Medicine · USApplied BioPhysics (United States) · USLa Jolla Bioengineering Institute · USSadick Dermatology · US

Funding

Recombinant HbAp Production for In Vivo Toxicity StudiesP01HL110900 · NHLBI · ALBERT EINSTEIN COLLEGE OF MEDICINE, INC · PI FRIEDMAN, JOEL M · 2012 to 2016
$10.6M
Involvement of opiorphins and polyamine synthesis in the development of priapismR01DK087872 · NIDDK · ALBERT EINSTEIN COLLEGE OF MEDICINE · PI DAVIES, KELVIN P · 2011 to 2013
$738k
Opiorphin as a master regulator of pathways leading to priapismR56DK087872 · NIDDK · ALBERT EINSTEIN COLLEGE OF MEDICINE, INC · PI DAVIES, KELVIN P · 2014 to 2014
$115k
NHLBI NIH HHS P01 HL110900NIDDK NIH HHS R01 DK087872NIDDK NIH HHS R01DK087872NIDDK NIH HHS R56 DK087872
6 · The paper itself

Abstract

introductionPatients undergoing radical prostatectomy (RP) suffer from erectile dysfunction (ED) refractory to phosphodiesterase 5 inhibitors, which act downstream of cavernous nerve (CN)-mediated release of nitric oxide (NO). Direct delivery of NO to the penis could potentially circumvent this limitation.

aimThis study aimed to determine if topically applied NO-releasing nanoparticles (NO-NPs) could elicit erections in a rat model of RP through increased blood flow.

methodsTwenty-six Sprague Dawley rats underwent bilateral transection of the CN. One week later, NO-NPs were applied topically to the penile shaft in dimethylsulfoxide (DMSO) gel (10 animals) or coconut oil (6 animals). Control animals were treated with empty NPs. Erectile function was determined through the intracorporal pressure/blood pressure ratio (ICP/BP). The effect of the NO-NPs on blood flow was determined using a hamster dorsal window chamber.

main outcome measuresAnimals were investigated for spontaneous erections, onset and duration of erectile response, and basal ICP/BP ratio. Microcirculatory blood flow was determined through measurements of arteriolar and venular diameter and red blood cell velocity.

resultsEight of 10 animals treated with NO-NPs suspended in DMSO gel had significant increases in basal ICP/BP, and 6 out of these 10 animals demonstrated spontaneous erections of approximately 1 minute in duration. Time to onset of spontaneous erections ranged from 5 to 37 minutes, and they occurred for at least 45 minutes. Similar results were observed with NO-NPs applied in coconut oil. No erectile response was observed in control animal models treated with empty NPs. The hamster dorsal window chamber experiment demonstrated that NO-NPs applied as a suspension in coconut oil caused a significant increase in the microcirculatory blood flow, sustained over 90 minutes.

conclusionsTopically applied NO-NPs induced spontaneous erections and increased basal ICP in an animal model of RP. These effects are most likely due to increased microcirculatory blood flow. These characteristics suggest that NO-NPs would be useful in penile rehabilitation of patients following RP.

Indexed as

Disease Models, AnimalAdministration, CutaneousAnimalsBlood Flow VelocityErectile DysfunctionMaleMuscle, SmoothPenile ErectionPenisPhosphodiesterase 5 InhibitorsProstatectomyRatsRats, Sprague-DawleyPhosphodiesterase 5 InhibitorsCavernous NerveErectile DysfunctionMicrocirculationNanoparticleNitric OxideRadical Prostatectomy

Identifiers

PMID25302850
PMCPMC4257846
OpenAlexW2153486153

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.