Evidence map›Paper›PMID 29294383›Full record

ArticleNeurobiology of learning and memory2018

A negative allosteric modulator of PDE4D enhances learning after traumatic brain injury.

David J Titus, Nicole M Wilson, Oscar Alcazar, Dale A Calixte, W Dalton Dietrich, Mark E Gurney, Coleen M Atkins

Open access · bronzeAbstract read
In one paragraph

Article in Neurobiology of learning and memory, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

14 citing papers in PubMed, 30 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

7 authors at 3 institutions in 1 country.

David J TitusThe Miami Project to Cure Paralysis, Department of Neurological Surgery, University of Miami Miller School of Medicine, 1095 NW 14 Terrace, Miami, FL 33136, USA.
Nicole M WilsonThe Miami Project to Cure Paralysis, Department of Neurological Surgery, University of Miami Miller School of Medicine, 1095 NW 14 Terrace, Miami, FL 33136, USA.
Oscar AlcazarThe Miami Project to Cure Paralysis, Department of Neurological Surgery, University of Miami Miller School of Medicine, 1095 NW 14 Terrace, Miami, FL 33136, USA.
Dale A CalixteThe Miami Project to Cure Paralysis, Department of Neurological Surgery, University of Miami Miller School of Medicine, 1095 NW 14 Terrace, Miami, FL 33136, USA.
W Dalton DietrichThe Miami Project to Cure Paralysis, Department of Neurological Surgery, University of Miami Miller School of Medicine, 1095 NW 14 Terrace, Miami, FL 33136, USA.
Mark E GurneyTetra Discovery Partners, Inc., 38 Fulton Street West, Suite 303, Grand Rapids, MI 49503, USA.
Coleen M AtkinsThe Miami Project to Cure Paralysis, Department of Neurological Surgery, University of Miami Miller School of Medicine, 1095 NW 14 Terrace, Miami, FL 33136, USA. Electronic address: catkins@med.miami.edu.
University of Miami · USNeurological Surgery · USTetra Therapeutics (United States) · US

Funding

Phosphodiesterase-4B (PDE4B) Inhibitors for Psychiatric DiseaseR44MH091791 · NIMH · TETRA DISCOVERY PARTNERS, INC. · PI GURNEY, MARK E · 2013 to 2018
$6.4M
Cyclic Nucleotide Regulation in Traumatic Brain Injury and Alzheimer's DiseaseR01NS056072 · NINDS · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI ATKINS, COLEEN M., DIETRICH, W DALTON · 2007 to 2018
$4.1M
Rehabilitation Strategies for Memory Dysfunction After Traumatic Brain InjuryR01NS069721 · NINDS · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI ATKINS, COLEEN M. · 2010 to 2019
$3.7M
Olympus VS120 Fluorescence and Brightfield Slide Scanner for High-Throughput Image Acquisition at the University of MiamiS10OD023579 · OD · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI MENDEZ, ARMANDO J · 2017 to 2017
$223k
NIMH NIH HHS R44 MH091791NINDS NIH HHS R01 NS056072NINDS NIH HHS R01 NS069721
6 · The paper itself

Abstract

Traumatic brain injury (TBI) significantly decreases cyclic AMP (cAMP) signaling which produces long-term synaptic plasticity deficits and chronic learning and memory impairments. Phosphodiesterase 4 (PDE4) is a major family of cAMP hydrolyzing enzymes in the brain and of the four PDE4 subtypes, PDE4D in particular has been found to be involved in memory formation. Although most PDE4 inhibitors target all PDE4 subtypes, PDE4D can be targeted with a selective, negative allosteric modulator, D159687. In this study, we hypothesized that treating animals with D159687 could reverse the cognitive deficits caused by TBI. To test this hypothesis, adult male Sprague Dawley rats received sham surgery or moderate parasagittal fluid-percussion brain injury. After 3 months of recovery, animals were treated with D159687 (0.3 mg/kg, intraperitoneally) at 30 min prior to cue and contextual fear conditioning, acquisition in the water maze or during a spatial working memory task. Treatment with D159687 had no significant effect on these behavioral tasks in non-injured, sham animals, but did reverse the learning and memory deficits in chronic TBI animals. Assessment of hippocampal slices at 3 months post-TBI revealed that D159687 reversed both the depression in basal synaptic transmission in area CA1 as well as the late-phase of long-term potentiation. These results demonstrate that a negative allosteric modulator of PDE4D may be a potential therapeutic to improve chronic cognitive dysfunction following TBI.

Indexed as

AnimalsBehavior, AnimalBenzhydryl CompoundsBrain Injuries, TraumaticCognitive DysfunctionConditioning, ClassicalFearHippocampusLearningLong-Term PotentiationMaleMaze LearningMemory, Short-TermPhenylurea CompoundsPhosphodiesterase 4 InhibitorsRatsBenzhydryl CompoundsD159687Phenylurea CompoundsPhosphodiesterase 4 InhibitorsCognitionFluid Percussion InjuryHippocampusMemoryPhosphodiesteraseTraumatic brain injury

Identifiers

PMID29294383
PMCPMC5844849
OpenAlexW2779429626

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.