Evidence map›Paper›PMID 21970817›Full record

ArticleResuscitation2012

Microglial depletion using intrahippocampal injection of liposome-encapsulated clodronate in prolonged hypothermic cardiac arrest in rats.

Tomas Drabek, Andreas Janata, Edwin K Jackson, Brad End, Jason Stezoski, Vincent A Vagni, Keri Janesko-Feldman, Caleb D Wilson, Nico van Rooijen, Samuel A Tisherman and 1 more

Abstract readComparative Study
In one paragraph

Article in Resuscitation, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

18 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Microglia in the developing retina.Neural development · 2019
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Microglia regulate the number of neural precursor cells in the developing cerebral cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  15. The brain's best friend: microglial neurotoxicity revisited.Frontiers in cellular neuroscience · 2013
    Article
  16. Article
  17. Review
  18. Article
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

11 authors at 2 institutions in 2 countries.

Tomas DrabekSafar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA 15260, USA. drabekt@anes.upmc.edu
Andreas Janata
Edwin K Jackson
Brad End
Jason Stezoski
Vincent A Vagni
Keri Janesko-Feldman
Caleb D Wilson
Nico van Rooijen
Samuel A Tisherman
Patrick M Kochanek
University of Pittsburgh · USVrije Universiteit Amsterdam · NL

Funding

UNIVERSITY OF PITTSBURGH BRAIN TRAUMA RESEARCH CENTERP50NS030318 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI DIXON, C EDWARD · 1995 to 2007
$8.9M
TBI, Amyloid Metabolism and Statin TherapyP01NS030318 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI DIXON, C EDWARD · 2008 to 2010
$3.7M
ADENOSINE AND TRAUMATIC BRAIN INJURYR01NS038087 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KOCHANEK, PATRICK M · 1999 to 2007
$2.3M
Role of CNPase in TBIR21NS070003 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI JACKSON, EDWIN KERRY, KOCHANEK, PATRICK M · 2010 to 2011
$426k
HYPOTHERMIA AND TRAUMATIC BRAIN INJURYP20NS030318 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI MARION, DONALD W. · 1991 to 1993
–
NINDS NIH HHS NS070003NINDS NIH HHS NS30318NINDS NIH HHS NS38087NINDS NIH HHS P01 NS030318NINDS NIH HHS P50 NS030318NINDS NIH HHS R01 NS038087NINDS NIH HHS R21 NS070003
6 · The paper itself

Abstract

Trauma patients who suffer cardiac arrest (CA) from exsanguination rarely survive. Emergency preservation and resuscitation using hypothermia was developed to buy time for resuscitative surgery and delayed resuscitation with cardiopulmonary bypass (CPB), but intact survival is limited by neuronal death associated with microglial proliferation and activation. Pharmacological modulation of microglia may improve outcome following CA. Systemic injection of liposome-encapsulated clodronate (LEC) depletes macrophages. To test the hypothesis that intrahippocampal injection of LEC would attenuate local microglial proliferation after CA in rats, we administered LEC or PBS into the right or left hippocampus, respectively. After rapid exsanguination and 6min no-flow, hypothermia was induced by ice-cold (IC) or room-temperature (RT) flush. Total duration of CA was 20min. Pre-treatment (IC, RTpre) and post-treatment (RTpost) groups were studied, along with shams (cannulation only) and CPB controls. On day 7, shams and CPB groups showed neither neuronal death nor microglial activation. In contrast, the number of microglia in hippocampus in each individual group (IC, RTpre, RTpost) was decreased with LEC vs. PBS by ∼34-46% (P<0.05). Microglial proliferation was attenuated in the IC vs. RT groups (P<0.05). Neuronal death did not differ between hemispheres or IC vs. RT groups. Thus, intrahippocampal injection of LEC attenuated microglial proliferation by ∼40%, but did not alter neuronal death. This suggests that microglia may not play a pivotal role in mediating neuronal death in prolonged hypothermic CA. This novel strategy provides us with a tool to study the specific effects of microglia in hypothermic CA.

Indexed as

AnimalsCardiopulmonary ResuscitationCell ProliferationClodronic AcidDisease Models, AnimalHeart ArrestHippocampusHypothermia, InducedInjections, IntralesionalLiposomesMaleMicrogliaNerve DegenerationRandom AllocationRatsRats, Sprague-DawleyClodronic AcidLiposomes

Identifiers

PMID21970817
PMCPMC4034691
OpenAlexW2123552018

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.