Evidence map›Paper›PMID 16258031›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2006

Homocysteine causes cerebrovascular leakage in mice.

David Lominadze, Andrew M Roberts, Neetu Tyagi, Karni S Moshal, Suresh C Tyagi

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
3.3field-weighted citation impact, top 9% 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

62 citing papers in PubMed, 89 citations in OpenAlex.

  1. Article
  2. Article
  3. Homocysteine and nutritional biomarkers in cognitive impairment.Molecular and cellular biochemistry · 2023
    Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Role of Homocysteine in Cognitive Impairement and Alzheimer's Disease.Indian journal of clinical biochemistry : IJCB · 2018
    Review
  17. Review
  18. Article
  19. Review
  20. Article

2 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

5 authors at 1 institution in 1 country.

David LominadzeDepartment of Physiology and Biophysics, Health Sciences Center, A-1115, University of Louisville, Louisville, Kentucky 40292, USA. dglomi01@louisville.edu
Andrew M Roberts
Neetu Tyagi
Karni S Moshal
Suresh C Tyagi
University of Louisville · US

Funding

Reversing diabetic muscle myopathy by exercise and exosomesR01HL074185 · NHLBI · UNIVERSITY OF LOUISVILLE · PI TYAGI, SURESH C. · 2003 to 2018
$5.7M
Mechanism of Vascular Remodeling in HyperhomocysteinemiaR01HL071010 · NHLBI · UNIVERSITY OF MISSISSIPPI MEDICAL CENTER · PI TYAGI, SURESH C. · 2002 to 2010
$2.7M
Fibronogen-Induced Vasconstriction during HypertensionR01HL080394 · NHLBI · UNIVERSITY OF LOUISVILLE · PI LOMINADZE, DAVID · 2007 to 2011
$2.1M
NHLBI NIH HHS HL-71010NHLBI NIH HHS HL-74185NHLBI NIH HHS R01 HL071010NHLBI NIH HHS R01 HL074185NHLBI NIH HHS R01 HL080394
6 · The paper itself

Abstract

Elevated plasma homocysteine (Hcy) is associated with cerebrovascular disease and activates matrix metalloproteinases (MMPs), which lead to vascular remodeling that could disrupt the blood-brain barrier. To determine whether Hcy administration can increase brain microvascular leakage secondary to activation of MMPs, we examined pial venules by intravital video microscopy through a craniotomy in anesthetized mice. Bovine serum albumin labeled with fluorescein isothiocyanate (BSA-FITC) was injected into a carotid artery to measure extravenular leakage. Hcy (30 microM/total blood volume) was injected 10 min after FITC-BSA injection. Four groups of mice were examined: 1) wild type (WT) given vehicle; 2) WT given Hcy (WT + Hcy); 3) MMP-9 gene knockout given Hcy (MMP-9-/- + Hcy); and 4) MMP-9-/- with topical application of histamine (10(-4) M) (MMP-9-/- + histamine). In the WT + Hcy mice, leakage of FITC-BSA from pial venules was significantly (P < 0.05) greater than in the other groups. There was no significant leakage of pial microvessels in MMP-9-/- + Hcy mice. Increased cerebrovascular leakage in the MMP-9-/- + histamine group showed that microvascular permeability could still increase by a mechanism independent of MMP-9. Treatment of cultured mouse microvascular endothelial cells with 30 microM Hcy resulted in significantly greater F-actin formation than in control cells without Hcy. Treatment with a broad-range MMP inhibitor (GM-6001; 1 microM) ameliorated Hcy-induced F-actin formation. These data suggest that Hcy increases microvascular permeability, in part, through MMP-9 activation.

Indexed as

ActinsAnimalsBlood-Brain BarrierCapillary Leak SyndromeCapillary PermeabilityCerebrovascular CirculationEndothelial CellsHomocysteineMaleMatrix Metalloproteinase 9MiceMice, Inbred C57BLMicrocirculationPia MaterActinsHomocysteineMatrix Metalloproteinase 9Mmp9 protein, mouse

Identifiers

PMID16258031
PMCPMC2819019
OpenAlexW2105900224

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.