Evidence map›Paper›PMID 22086196›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2012

Kollidon VA64, a membrane-resealing agent, reduces histopathology and improves functional outcome after controlled cortical impact in mice.

Lamin H Mbye, Eyup Keles, Luyang Tao, Jimmy Zhang, Joonyong Chung, Mykol Larvie, Rajani Koppula, Eng H Lo, Michael J Whalen

Abstract read
In one paragraph

Article in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

19 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  15. The pharmacokinetics and pharmacodynamics of Kollidon VA64 dissociate its protective effects from membrane resealing after controlled cortical impact in mice.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2014
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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

9 authors.

Lamin H MbyeNeuroscience Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, USA.
Eyup Keles
Luyang Tao
Jimmy Zhang
Joonyong Chung
Mykol Larvie
Rajani Koppula
Eng H Lo
Michael J Whalen

Funding

RIPK1: A new target for traumatic brain injury?R01NS064545 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI WHALEN, MICHAEL J · 2009 to 2013
$2.1M
Plasmalemma permeability: A therapeutic target for traumatic brain injury?R01NS061255 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI WHALEN, MICHAEL J · 2008 to 2012
$1.9M
NINDS NIH HHS 5R01NS061255NINDS NIH HHS R01 NS061255NINDS NIH HHS R01 NS064545
6 · The paper itself

Abstract

Loss of plasma membrane integrity is a feature of acute cellular injury/death in vitro and in vivo. Plasmalemma-resealing agents are protective in acute central nervous system injury models, but their ability to reseal cell membranes in vivo has not been reported. Using a mouse controlled cortical impact (CCI) model, we found that propidium iodide-positive (PI+) cells pulse labeled at 6, 24, or 48 hours maintained a degenerative phenotype and disappeared from the injured brain by 7 days, suggesting that plasmalemma permeability is a biomarker of fatal cellular injury after CCI. Intravenous or intracerebroventricular administration of Kollidon VA64, poloxamer P188, or polyethylene glycol 8000 resealed injured cell membranes in vivo (P<0.05 versus vehicle or poloxamer P407). Kollidon VA64 (1 mmol/L, 500 μL) administered intravenously to mice 1  hour after CCI significantly reduced acute cellular degeneration, chronic brain tissue damage, brain edema, blood-brain barrier damage, and postinjury motor deficits (all P<0.05 versus vehicle). However, VA64 did not rescue pulse-labeled PI+ cells from eventual demise. We conclude that PI permeability within 48 hours of CCI is a biomarker of eventual cell death/loss. Kollidon VA64 reduces secondary damage after CCI by mechanisms other than or in addition to resealing permeable cells.

Indexed as

Cell Membrane PermeabilityAnimalsBlood-Brain BarrierBrain InjuriesCell DeathCell MembraneCerebral CortexDisease Models, AnimalInjections, IntravenousInjections, IntraventricularMagnetic Resonance ImagingMaleMiceMotor ActivityPyrrolidinesVinyl Compoundspoly(vinylpyrrolidone-co-vinyl-acetate)PyrrolidinesVinyl Compounds

Identifiers

PMID22086196
PMCPMC3293116

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.