Evidence map›Paper›PMID 37209264›Full record

ArticleMolecular neurobiology2023

Dopamine and Glutamate Crosstalk Worsen the Seizure Outcome in TLE-HS Patients.

Kishore Madhamanchi, Pradeep Madhamanchi, Sita Jayalakshmi, Manas Panigrahi, Anuja Patil, Prakash Babu Phanithi

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Article in Molecular neurobiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.6field-weighted citation impact, top 38% 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

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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

3 citing papers in PubMed, 4 citations in OpenAlex.

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4 · The record

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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

6 authors at 2 institutions in 1 country.

Kishore MadhamanchiDepartment of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500046, India.ORCID http://orcid.org/0000-0002-5968-5177
Pradeep MadhamanchiDepartment of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500046, India.ORCID http://orcid.org/0000-0003-2818-4502
Sita JayalakshmiDepartment of Neurology, Krishna Institute of Medical Sciences (KIMS), Secunderabad, Telangana, India.
Manas PanigrahiDepartment of Neurology, Krishna Institute of Medical Sciences (KIMS), Secunderabad, Telangana, India.
Anuja PatilDepartment of Neurology, Krishna Institute of Medical Sciences (KIMS), Secunderabad, Telangana, India.
Prakash Babu PhanithiDepartment of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500046, India. prakash@uohyd.ac.in.ORCID http://orcid.org/0000-0002-1528-8575
Krishna Institute of Medical Sciences · INUniversity of Hyderabad · IN

Funding

DBT BT/PR18168/MED/29/1064/2016DST-CSRI SR/CSRI/196/2016DST-SERB CRG/2020/005021University of Hyderabad-IoE (F11/9/2019-U3 (A).
6 · The paper itself

Abstract

Temporal lobe epilepsy (TLE), accompanied by hippocampal sclerosis (HS), is the most common form of drug-resistant epilepsy (DRE). Nearly 20% of the patients showed seizure recurrence even after surgery, and the reasons are yet to be understood. Dysregulation of neurotransmitters is evident during seizures, which can induce excitotoxicity. The present study focused on understanding the molecular changes associated with Dopamine (DA) and glutamate signaling and their possible impact on the persistence of excitotoxicity and seizure recurrence in patients with drug-resistant TLE-HS who underwent surgery. According to the International League against Epilepsy (ILAE) suggested classification for seizure outcomes, the patients (n = 26) were classified as class 1 (no seizures) and class 2 (persistent seizures) using the latest post-surgery follow-up data to understand the prevalent molecular changes in seizure-free and seizure-recurrence patient groups. Our study uses thioflavin T assay, western blot analysis, immunofluorescence assays, and fluorescence resonance energy transfer (FRET) assays. We have observed a substantial increase in the DA and glutamate receptors that promote excitotoxicity. Patients who had seizure recurrence showed a significant increase in (pNR2B, p < 0.009; and pGluR1, p < 0.01), protein phosphatase1γ (PP1γ; p < 0.009), protein kinase A (PKAc; p < 0.001) and dopamine-cAMP regulated phospho protein32 (pDARPP32T34; p < 0.009) which are critical for long-term potentiation (LTP), excitotoxicity compared to seizure-free patients and controls. A significant increase in D1R downstream kinases like PKA (p < 0.001), pCAMKII (p < 0.009), and Fyn (p < 0.001) was observed in patient samples compared to controls. Anti-epileptic DA receptor D2R was found to be decreased in ILAE class 2 (p < 0.02) compared to class 1. Since upregulation of DA and glutamate signaling supports LTP and excitotoxicity, we believe it could impact seizure recurrence. Further studies about the impact of DA and glutamate signaling on the distribution of PP1γ at postsynaptic density and synaptic strength could help us understand the seizure microenvironment in patients. Dopamine, Glutamate signal crosstalk. Diagram representing the PP1γ regulation by NMDAR negative feedback inhibition signaling (green circle-left) and D1R signal (red circle-middle) domination over PP1γ though increased PKA, pDARPP32T34, and supports pGluR1, pNR2B in seizure recurrent patients. D1R-D2R hetero dimer activation (red circle-right) increases cellular Ca

Indexed as

Drug Resistant EpilepsyEpilepsyEpilepsy, Temporal LobeDopamineGlutamic AcidHippocampusHumansTreatment OutcomeDopamineGlutamic AcidD1-D2 HeterodimerDopamineIonotropic Glutamate ReceptorSeizures RecurrenceTemporal Lobe Epilepsy

Identifiers

PMID37209264
OpenAlexW4377139801

What Socratic holds

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Registered trials

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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 Socratic graph.