Evidence map›Paper›PMID 19913585›Full record

ArticleNeurochemistry international2010

Hydrogen sulfide mitigates matrix metalloproteinase-9 activity and neurovascular permeability in hyperhomocysteinemic mice.

Neetu Tyagi, Srikanth Givvimani, Natia Qipshidze, Soumi Kundu, Shray Kapoor, Jonathan C Vacek, Suresh C Tyagi

Open access · greenAbstract read
In one paragraph

Article in Neurochemistry international, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
2.4field-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

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 44 citations in OpenAlex.

  1. Pooled it
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  15. A possible molecular mechanism of hearing loss during cerebral ischemia in mice.Canadian journal of physiology and pharmacology · 2015
    Article
  16. Hydrogen sulfide inhalation decreases early blood-brain barrier permeability and brain edema induced by cardiac arrest and resuscitation.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2015
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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

7 authors at 1 institution in 1 country.

Neetu TyagiDepartment of Physiology and Biophysics, School of Medicine, University of Louisville, Louisville, KY 40202, USA. n0tyag01@louisville.edu
Srikanth Givvimani
Natia Qipshidze
Soumi Kundu
Shray Kapoor
Jonathan C Vacek
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
Mechanisms of Cerebral Vascular RemodelingR01NS051568 · NINDS · UNIVERSITY OF LOUISVILLE · PI TYAGI, SURESH C. · 2007 to 2011
$1.6M
Implications of Endothelial-Myocyte Uncoupling in Cardiac ArrhythmiaR01HL088012 · NHLBI · UNIVERSITY OF LOUISVILLE · PI TYAGI, SURESH C. · 2007 to 2010
$1.5M
NHLBI NIH HHS HL-71010NHLBI NIH HHS HL-74185NHLBI NIH HHS HL-88012NHLBI NIH HHS R01 HL071010NHLBI NIH HHS R01 HL074185NHLBI NIH HHS R01 HL088012NINDS NIH HHS NS-51568NINDS NIH HHS R01 NS051568
6 · The paper itself

Abstract

An elevated level of homocysteine (Hcy), known as hyperhomocysteinemia (HHcy), was associated with neurovascular diseases. At physiological levels, hydrogen sulfide (H(2)S) protected the neurovascular system. Because Hcy was also a precursor of hydrogen sulfide (H(2)S), we sought to test whether the H(2)S protected the brain during HHcy. Cystathionine-beta-synthase heterozygous (CBS+/-) and wild type (WT) mice were supplemented with or without NaHS (30 microM/L, H(2)S donor) in drinking water. Blood flow and cerebral microvascular permeability in pial vessels were measured by intravital microscopy in WT, WT+NaHS, CBS-/+ and (CBS-/+)+NaHS-treated mice. The brain tissues were analyzed for matrix metalloproteinase (MMP) and tissue inhibitor of metalloproteinase (TIMP) by Western blot and RT-PCR. The mRNA levels of CBS and cystathionine gamma lyase (CSE, enzyme responsible for conversion of Hcy to H(2)S) genes were measured by RT-PCR. The results showed a significant increase in MMP-2, MMP-9, TIMP-3 protein and mRNA in CBS (-/+) mice, while H(2)S treatment mitigated this increase. Interstitial localization of MMPs was also apparent through immunohistochemistry. A decrease in protein and mRNA expression of TIMP-4 was observed in CBS (-/+) mice. Microscopy data revealed increase in permeability in CBS (-/+) mice. These effects were ameliorated by H(2)S and suggested that physiological levels of H(2)S supplementation may have therapeutic potential against HHcy-induced microvascular permeability, in part, by normalizing the MMP/TIMP ratio in the brain.

Indexed as

AnimalsCapillary PermeabilityHydrogen SulfideHyperhomocysteinemiaMatrix Metalloproteinase 9MiceReverse Transcriptase Polymerase Chain ReactionHydrogen SulfideMatrix Metalloproteinase 9

Identifiers

PMID19913585
PMCPMC2921887
OpenAlexW2053943918

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.