Evidence map›Paper›PMID 25251457›Full record

ArticleAnesthesiology2014

Amantadine alleviates postoperative cognitive dysfunction possibly by increasing glial cell line-derived neurotrophic factor in rats.

Junfeng Zhang, Hongying Tan, Wei Jiang, Zhiyi Zuo

2 registry-linked trialsOpen access · bronzeAbstract read
In one paragraph

Article in Anesthesiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 60 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% 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.

NCT03988010 phase4unknown statusnot on this mapstarted 2019, after this paper: background citation

Evaluation of the Effect of Preoperative Intravenous Amantadine Sulfate on the Postoperative Early Cognitive Functions in a Elderly Patient With Laparoscopic Radical Prostatectomy

TypeinterventionalSponsorTC Erciyes UniversityRan2019 to 2019Enrolled54ConditionsPostoperative Cognitive DysfunctionArmsAmantadine Sulfate, Placebo (for amantadine sulphate)
NCT05601856 unknown statusnot on this mapstarted 2022, after this paper: background citation

Gut Microbiome and Blood Indices in Patients With AD and Their Spousal Caregivers

TypeobservationalSponsorUniversity of VirginiaRan2022 to 2025Enrolled104ConditionsAlzheimer Disease, Gut Biome
3 · Its place in the literature

Who cites it

60 citing papers in PubMed, 1 synthesis or guideline pooled it, 88 citations in OpenAlex.

  1. Pooled it
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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

4 authors at 1 institution in 2 countries.

Junfeng ZhangFrom the Department of Anesthesiology, University of Virginia, Charlottesville, Virginia (J.Z., H.T., Z.Z.); Department of Anesthesiology, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, China (J.Z., W.J.); Department of Anesthesiology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China (H.T.).
Hongying Tan
Wei Jiang
Zhiyi Zuo
Committee on Publication Ethics · GB

Funding

Volatile anesthetic modulation of glutamate transportersR01GM065211 · NIGMS · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI ZUO, ZHIYI · 2003 to 2011
$2.6M
Volatile anesthetic effects on aging brainR01GM098308 · NIGMS · UNIVERSITY OF VIRGINIA · PI ZUO, ZHIYI · 2012 to 2015
$1.2M
NIGMS NIH HHS R01 GM065211NIGMS NIH HHS R01 GM098308
6 · The paper itself

Abstract

backgroundPostoperative cognitive dysfunction is a clinical entity that is associated with poor outcome. We determined the effectiveness of amantadine in reducing surgery-induced cognitive impairment and the role of glial cell line-derived neurotrophic factor (GDNF) in this effect.

methodsFour-month old male Fischer 344 rats were subjected to right carotid exposure under intravenous anesthesia. Some rats received intraperitoneal injection of 25 mg/kg/day amantadine for 3 days with the first dose at 15 min before the surgery or intracerebroventricular injection of GDNF or an anti-GDNF antibody at the end of surgery. One week later, rats were started to be tested by Barnes maze and fear conditioning. Hippocampus was harvested at 6 h, 24 h or 10 days after the surgery for biochemical analysis. C8-B4 cells, a microglial cell line, were pretreated with 1 ng/ml GDNF for 30 min before being exposed to 5 ng/ml lipopolysaccharide for 2 h.

resultsSurgery increased the time to identify the target box in the Barnes maze when tested 1 day [22 (median) (11-66) (interquartile range) of control group vs. 158 (29-180) of surgery group, n = 15, P = 0.022) or 8 days after the training sessions and reduced context-related freezing behavior in the fear conditioning test. These effects were attenuated by amantadine (25 (14-90), n = 15, P = 0.029 compared with surgery group at 1 day after the training sessions in Barnes maze) and intracerebroventricular GDNF. Amantadine increased GDNF that was co-localized with glial fibrillary acidic protein, an astrocytic marker, in the hippocampus. Intracerebroventricular injection of an anti-GDNF antibody but not the denatured antibody blocked the effects of amantadine on cognition. Surgery induced neuroinflammation that was inhibited by amantadine. Lipopolysaccharide increased interleukin 1β production from C8-B4 cells. This effect was inhibited by GDNF.

conclusionsOur results suggest that amantadine attenuated surgery-induced learning and memory impairment. This effect may be mediated by GDNF via inhibition of neuroinflammation.

Indexed as

AmantadineAnimalsCognition DisordersGlial Cell Line-Derived Neurotrophic FactorHippocampusInfusions, IntraventricularMalePostoperative ComplicationsRandom AllocationRatsRats, Inbred F344AmantadineGdnf protein, ratGlial Cell Line-Derived Neurotrophic Factor

Identifiers

PMID25251457
PMCPMC4176814
OpenAlexW1991247440

What OpenQuestion holds

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Read underepoch 390

Registered trials

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.