Evidence map›Paper›PMID 29686642›Full record

ArticleFrontiers in neurology2018

Efficacy of Novel Carbon Nanoparticle Antioxidant Therapy in a Severe Model of Reversible Middle Cerebral Artery Stroke in Acutely Hyperglycemic Rats.

Roderic H Fabian, Paul J Derry, Harriett Charmaine Rea, William V Dalmeida, Lizanne G Nilewski, William K A Sikkema, Pitchaiah Mandava, Ah-Lim Tsai, Kimberly Mendoza, Vladimir Berka and 2 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in neurology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

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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

12 authors at 4 institutions in 1 country.

Roderic H FabianDepartment of Neurology, Baylor College of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX, United States.
Paul J DerryDepartment of Neurology and Center for Translational Research on Inflammatory Diseases, Baylor College of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX, United States.
Harriett Charmaine ReaDepartment of Neurology, Baylor College of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX, United States.
William V DalmeidaDepartment of Neurology, Baylor College of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX, United States.
Lizanne G NilewskiDepartment of Chemistry, Rice University, Houston, TX, United States.
William K A SikkemaDepartment of Chemistry, Rice University, Houston, TX, United States.
Pitchaiah MandavaDepartment of Neurology, Baylor College of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX, United States.
Ah-Lim TsaiDivision of Hematology, Department of Internal Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX, United States.
Kimberly MendozaDepartment of Chemistry, Rice University, Houston, TX, United States.
Vladimir BerkaDivision of Hematology, Department of Internal Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX, United States.
James M TourDepartments of Chemistry, Computer Science, Materials Science and NanoEngineering, Smalley-Curl Institute and the NanoCarbon Center, Rice University, Houston, TX, United States.
Thomas A KentDepartment of Neurology and Center for Translational Research on Inflammatory Diseases, Baylor College of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX, United States.
Baylor College of Medicine · USMichael E. DeBakey VA Medical Center · USRice University · USThe University of Texas Health Science Center at Houston · US

Funding

RESEARCH TRAINING IN LUNG DISEASET32HL007747 · NHLBI · BAYLOR COLLEGE OF MEDICINE · PI ROSAS, IVAN O. · 1993 to 2020
$5.1M
Novel Carbon Nanozyme Mechanisms for Traumatic Brain InjuryR01NS094535 · NINDS · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI HEGDE, MURALIDHAR L, KENT, THOMAS · 2015 to 2024
$4.1M
Augmenting carbon nanoparticles as novel antioxidants for ischemic strokeR21NS084290 · NINDS · BAYLOR COLLEGE OF MEDICINE · PI KENT, THOMAS, TOUR, JAMES MITCHELL · 2014 to 2015
$435k
NHLBI NIH HHS T32 HL007747NINDS NIH HHS R01 NS094535NINDS NIH HHS R21 NS084290
6 · The paper itself

Abstract

introductionWhile oxidative stress can be measured during transient cerebral ischemia, antioxidant therapies for ischemic stroke have been clinically unsuccessful. Many antioxidants are limited in their range and/or capacity for quenching radicals and can generate toxic intermediates overwhelming depleted endogenous protection. We developed a new antioxidant class, 40 nm × 2 nm carbon nanoparticles, hydrophilic carbon clusters, conjugated to poly(ethylene glycol) termed PEG-HCCs. These particles are high-capacity superoxide dismutase mimics, are effective against hydroxyl radical, and restore the balance between nitric oxide and superoxide in the vasculature. Here, we report the effects of PEG-HCCs administered during reperfusion after transient middle cerebral artery occlusion (tMCAO) by suture in the rat under hyperglycemic conditions. Hyperglycemia occurs in one-third of stroke patients and worsens clinical outcome. In animal models, this worsening occurs largely by accelerating elaboration of reactive oxygen species (ROS) during reperfusion.

methodsPEG-HCCs were studied for their protective ability against hydrogen peroxide in b.End3 brain endothelial cell line and E17 primary cortical neuron cultures.

resultsPEG-HCCs were protective against hydrogen peroxide in both culture models.

conclusionThis nano-antioxidant showed some improvement in several outcome measures in a severe model of tMCAO when administered at a clinically relevant time point. Long-term studies and additional models are required to assess potential for clinical use, especially for patients hyperglycemic at the time of their stroke, as these patients have the worst outcomes.

Indexed as

antioxidantsdiabetes mellitushyperglycemiananomedicinerat modelstroketransient middle cerebral artery occlusion

Identifiers

PMID29686642
PMCPMC5900022
OpenAlexW2796785666

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.