Evidence map›Paper›PMID 34269965›Full record

ArticleNeurochemical research2021

Protective Effects of Estrogen via Nanoparticle Delivery to Attenuate Myelin Loss and Neuronal Death after Spinal Cord Injury.

Azizul Haque, Kelsey P Drasites, April Cox, Mollie Capone, Ali I Myatich, Ramsha Shams, Denise Matzelle, Dena P Garner, Mikhail Bredikhin, Donald C Shields and 2 more

Open access · greenAbstract read
In one paragraph

Article in Neurochemical research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

16 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
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  10. Nanotherapeutics for Alleviating Anesthesia-Associated Complications.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Review
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  15. Article
  16. Pathophysiology and Therapeutic Approaches for Spinal Cord Injury.International journal of molecular sciences · 2022
    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

12 authors at 3 institutions in 1 country.

Azizul HaqueDepartment of Microbiology and Immunology, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC, 29425, USA. haque@musc.edu.ORCID http://orcid.org/0000-0002-6386-9390
Kelsey P DrasitesDepartment of Microbiology and Immunology, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC, 29425, USA.
April CoxDepartment of Neurosurgery, Medical University of South Carolina, 96 Jonathan Lucas Street, Charleston, USA.
Mollie CaponeDepartment of Microbiology and Immunology, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC, 29425, USA.
Ali I MyatichDepartment of Microbiology and Immunology, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC, 29425, USA.
Ramsha ShamsDepartment of Microbiology and Immunology, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC, 29425, USA.
Denise MatzelleDepartment of Neurosurgery, Medical University of South Carolina, 96 Jonathan Lucas Street, Charleston, USA.
Dena P GarnerDepartment of Health and Human Performance, The Citadel, 171 Moultrie St, Charleston, SC, 29409, USA.
Mikhail BredikhinDepartment of Bioengineering, Clemson University, Clemson, SC, USA.
Donald C ShieldsDepartment of Neurosurgery, Medical University of South Carolina, 96 Jonathan Lucas Street, Charleston, USA.
Alexey VertegelDepartment of Bioengineering, Clemson University, Clemson, SC, USA.
Naren L BanikDepartment of Microbiology and Immunology, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC, 29425, USA. baniknl@musc.edu.
Medical University of South Carolina · USClemson University · USCitadel · US

Funding

Calpain cleavage of α-synuclein and T-cell reactivity in Parkinson’s diseaseR21NS118393 · NINDS · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI BANIK, NAREN L, HAQUE, AZIZUL · 2020 to 2020
$411k
BLRD VA I01 BX001262BLRD VA I01 BX002349BLRD VA I01 BX004269BLRD VA IK6 BX005964NIH HHS 1R21NS118393-01NINDS NIH HHS R21 NS118393South Carolina Spinal Cord Injury Research Fund SCIRF #2016 I-03South Carolina Spinal Cord Injury Research Fund SCIRF #2018 I-01South Carolina State Spinal Cord Injury Research Fund SCIRF-2015-I-01South Carolina State Spinal Cord Injury Research Fund SCIRF-2015P-01South Carolina State Spinal Cord Injury Research Fund SCIRF-2015P-04U.S. Department of Veterans Affairs 1I01BX002349-01U.S. Department of Veterans Affairs 1I01 BX004269-01U.S. Department of Veterans Affairs 1IOBX001262U.S. Department of Veterans Affairs 2I01 BX001262-05
6 · The paper itself

Abstract

Spinal cord injury (SCI) is associated with devastating neurological deficits affecting more than 11,000 Americans each year. Although several therapeutic agents have been proposed and tested, no FDA-approved pharmacotherapy is available for SCI treatment. We have recently demonstrated that estrogen (E2) acts as an antioxidant and anti-inflammatory agent, attenuating gliosis in SCI. We have also demonstrated that nanoparticle-mediated focal delivery of E2 to the injured spinal cord decreases lesion size, reactive gliosis, and glial scar formation. The current study tested in vitro effects of E2 on reactive oxygen species (ROS) and calpain activity in microglia, astroglia, macrophages, and fibroblasts, which are believed to participate in the inflammatory events and glial scar formation after SCI. E2 treatment decreased ROS production and calpain activity in these glial cells, macrophages, and fibroblast cells in vitro. This study also tested the efficacy of fast- and slow-release nanoparticle-E2 constructs in a rat model of SCI. Focal delivery of E2 via nanoparticles increased tissue distribution of E2 over time, attenuated cell death, and improved myelin preservation in injured spinal cord. Specifically, the fast-release nanoparticle-E2 construct reduced the Bax/Bcl-2 ratio in injured spinal cord tissues, and the slow-release nanoparticle-E2 construct prevented gliosis and penumbral demyelination distal to the lesion site. These data suggest this novel E2 delivery strategy to the lesion site may decrease inflammation and improve functional outcomes following SCI.

Indexed as

AnimalsCell DeathDrug Delivery SystemsEstrogensHumansMaleMiceMicrogliaMyelin SheathNanoparticlesNeuronsNeuroprotective AgentsRatsRats, Sprague-DawleyRAW 264.7 CellsSpinal Cord InjuriesEstrogensNeuroprotective AgentsCalpainGliosisMyelinationNanoparticle-estrogenNeuronal deathReactive oxygen speciesSpinal cord injury

Identifiers

PMID34269965
PMCPMC9723545
OpenAlexW3182702391

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.