Evidence map›Paper›PMID 29505961›Full record

ArticleNeurobiology of aging2018

Identification of new PDE9A isoforms and how their expression and subcellular compartmentalization in the brain change across the life span.

Neema S Patel, Jennifer Klett, Katy Pilarzyk, Dong Ik Lee, David Kass, Frank S Menniti, Michy P Kelly

Abstract read
In one paragraph

Article in Neurobiology of aging, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

24 citing papers in PubMed, 40 citations in OpenAlex.

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  5. In the Brain of Phosphodiesterases: Potential Therapeutic Targets for Schizophrenia.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2025
    Review
  6. Article
  7. Phosphodiesterases: Evolving Concepts and Implications for Human Therapeutics.Annual review of pharmacology and toxicology · 2025
    Review
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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 4 institutions in 1 country.

Neema S PatelDepartment of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, Columbia, SC, USA.
Jennifer KlettDepartment of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, Columbia, SC, USA.
Katy PilarzykDepartment of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, Columbia, SC, USA.
Dong Ik LeeDivision of Cardiology, Department of Medicine, Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore MD, USA.
David KassDivision of Cardiology, Department of Medicine, Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore MD, USA.
Frank S MennitiGeorge and Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI, USA.
Michy P KellyDepartment of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, Columbia, SC, USA. Electronic address: Michy.Kelly@uscmed.sc.edu.
University of South Carolina · USJohns Hopkins Medicine · USJohns Hopkins University · USUniversity of Rhode Island · US

Funding

Compartmentalization of Cyclic Nucleotide Signaling in the Ventral HippocampusR01MH101130 · NIMH · UNIVERSITY OF SOUTH CAROLINA AT COLUMBIA · PI KELLY, MICHY PATRICE · 2014 to 2018
$1.7M
NIMH NIH HHS R01 MH101130
6 · The paper itself

Abstract

3',5'-Cyclic nucleotide phosphodiesterases (PDEs) degrade 3',5' cyclic adenonosine monophosphate (cAMP) and 3',5' cyclic guanosine monophosphate (cGMP), with PDE9A having the highest affinity for cGMP. We show PDE9A6 and 3 novel PDE9 isoforms (PDE9X-100, PDE9X-120, and PDE9X-175) are reliably detected in the brain and lung of mice, whereas PDE9A2 and other isoforms are found elsewhere. PDE9A localizes to the membrane in all organs except the bladder, where it is cytosolic. Brain additionally shows PDE9 in the nuclear fraction. PDE9A mRNA expression/localization dramatically changes across neurodevelopment in a manner that is strikingly consistent between mice and humans (i.e., decreased expression in the hippocampus and cortex and inverted-U in the cerebellum). Study of the 4 PDE9 isoforms in the mouse brain from postnatal day 7 through 24 months similarly identifies dramatic effects of age on expression and subcellular compartmentalization that are isoform specific and brain region specific. Finally, PDE9A mRNA is elevated in the aged human hippocampus with dementia when there is a history of traumatic brain injury. Thus, brain PDE9 is localized to preferentially regulate nuclear- and membrane-proximal pools of cGMP, and its function likely changes across the life span.

Indexed as

Gene Expression3',5'-Cyclic-AMP PhosphodiesterasesAgingAnimalsBrainCell CompartmentationCyclic GMPHumansMice, Inbred C57BLMice, KnockoutProtein IsoformsRNA, MessengerSubcellular Fractions3',5'-Cyclic-AMP PhosphodiesterasesCyclic GMPPde9a protein, mouseProtein IsoformsRNA, MessengerAgingAllen institute for Brain ScienceCerebellumcGMPDevelopmentGAPDHHippocampusPhosphodiesterasePonceauPrefrontal cortexStriatum

Identifiers

PMID29505961
PMCPMC5871571
OpenAlexW2794348911

What OpenQuestion holds

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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.