Evidence map›Paper›PMID 25005183›Full record

ReviewCurrent medicinal chemistry2014

Endothelial dysfunction: the link between homocysteine and hydrogen sulfide.

Sathnur Pushpakumar, Sourav Kundu, Utpal Sen

Open access · bronzeAbstract readReview
In one paragraph

Review in Current medicinal chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 110 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
110citing papers in PubMed, 4 pooled it
7.9field-weighted citation impact, top 2% 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

110 citing papers in PubMed, 4 syntheses or guidelines pooled it, 248 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Homocysteine-lowering interventions for preventing cardiovascular events.The Cochrane database of systematic reviews · 2017
    Pooled it
  5. Article
  6. Article
  7. Review
  8. Article
  9. Risk of Retinal Vein Occlusion in Patients With Vitamin BJournal of vitreoretinal diseases · 2026
    Article
  10. Article
  11. Review
  12. Molecules (Basel, Switzerland) · 2026
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Homocysteine: Canary in the Coal Mine or Hidden Threat? A Biochemical Study on the Role of Plasma Thiols.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  19. Transsulfuration Pathway Products and HInternational journal of molecular sciences · 2025
    Review
  20. Homocysteine Attack on Vascular Endothelium-Old and New Features.International journal of molecular sciences · 2025
    Review

50 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

Sathnur Pushpakumar
Sourav Kundu
Utpal SenDepartment of Physiology & Biophysics, University of Louisville School of Medicine, 500 South Preston Street, A-1115; Louisville, KY-40292, USA. u0sen001@louisville.edu.
University of Louisville · US

Funding

Homocysteine & Angiotensin II in Renovascular RemodelingR01HL104103 · NHLBI · UNIVERSITY OF LOUISVILLE · PI SEN, UTPAL · 2011 to 2015
$1.8M
NHLBI NIH HHS HL104103NHLBI NIH HHS R01 HL104103
6 · The paper itself

Abstract

High level of homocysteine (hyperhomocysteinemia, HHcy) is associated with increased risk for vascular disease. Evidence for this emerges from epidemiological studies which show that HHcy is associated with premature peripheral, coronary artery and cerebrovascular disease independent of other risk factors. Possible mechanisms by which homocysteine causes vascular injury include endothelial injury, DNA dysfunction, proliferation of smooth muscle cells, increased oxidative stress, reduced activity of glutathione peroxidase and promoting inflammation. HHcy has been shown to cause direct damage to endothelial cells both in vitro and in vivo. Clinically, this manifests as impaired flow-mediated vasodilation and is mainly due to a reduction in nitric oxide synthesis and bioavailability. The effect of impaired nitric oxide release can in turn trigger and potentiate atherothrombogenesis and oxidative stress. Endothelial damage is a crucial aspect of atherosclerosis and precedes overt manifestation of disease. In addition, endothelial dysfunction is also associated with hypertension, diabetes, ischemia reperfusion injury and neurodegenerative diseases. Homocysteine is a precursor of hydrogen sulfide (H2S) which is formed by transulfuration process catalyzed by the enzymes, cystathionine β-synthase and cystathionine γ-lyase. H2S is a gasotransmitter that has emerged recently as a novel mediator in cardiovascular homeostasis. As a potent vasodilator, it plays several roles which include regulation of vessel diameter, protection of endothelium from redox stress, ischemia reperfusion injury and chronic inflammation. However, the precise mechanism by which it mediates these beneficial effects is complex and still remains unclear. Current evidence indicates H2S modulates cellular functions by a variety of intracellular signaling processes. In this review, we summarize the mechanisms of HHcy-induced endothelial dysfunction and the metabolism and physiological functions of H2S as a protective agent.

Indexed as

HomocysteineHumansHydrogen SulfideOxidative StressHomocysteineHydrogen Sulfide

Identifiers

PMID25005183
PMCPMC5539954
OpenAlexW2117611302

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.