The impact of neurodegeneration on the electrical activity of brain tissue: multielectrode array analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F24%3A00136411" target="_blank" >RIV/00216224:14110/24:00136411 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The impact of neurodegeneration on the electrical activity of brain tissue: multielectrode array analysis

Popis výsledku v původním jazyce

Alzheimer's disease (AD) is characterized by neurodegeneration due to an accumulation of abnormal amounts of neurodegenerative proteins (NP). Elevated levels of NP have also been observed in patients suffering from temporal lobe epilepsy (TLE) which brings neurodegeneration into association with an increased risk of epileptic seizures. This study aimed to provide pilot data on the possible relationship between excitability and neurodegeneration. Electrical activity was recorded at 37°C using the multielectrode array (MEA) technique in cerebral organoids prepared from induced pluripotent stem cells (iPSCs) derived from a patient with the familial form of AD (nAD = 6) and an unrelated healthy subject (nWT = 5). The study found a significantly increased number of active electrodes, showing both spikes and bursts, in AD organoids compared to healthy controls (e.g. differentiation day D105: WT 3.39 vs. AD 20.34% in the case of spikes, P &lt; 0.01, and WT 1.7 vs. AD 17.0 % in the case of bursts, P &lt; 0.05). On some days, a significant increase was also observed in the case of burst duration (D118; P &lt; 0.05), burst count (D105; P &lt; 0.05), or intraburst spike number (D114; P &lt; 0.05). These pilot data indicate that neurodegenerative cerebral organoids show signs of heightened neural tissue excitability compared to healthy ones. Our ongoing analysis aims to validate these pilot results further and incorporate data describing the content of NP in these cerebral organoids for establishing an association between neurodegeneration and increased neuronal excitability.

Název v anglickém jazyce

The impact of neurodegeneration on the electrical activity of brain tissue: multielectrode array analysis

Popis výsledku anglicky

Alzheimer's disease (AD) is characterized by neurodegeneration due to an accumulation of abnormal amounts of neurodegenerative proteins (NP). Elevated levels of NP have also been observed in patients suffering from temporal lobe epilepsy (TLE) which brings neurodegeneration into association with an increased risk of epileptic seizures. This study aimed to provide pilot data on the possible relationship between excitability and neurodegeneration. Electrical activity was recorded at 37°C using the multielectrode array (MEA) technique in cerebral organoids prepared from induced pluripotent stem cells (iPSCs) derived from a patient with the familial form of AD (nAD = 6) and an unrelated healthy subject (nWT = 5). The study found a significantly increased number of active electrodes, showing both spikes and bursts, in AD organoids compared to healthy controls (e.g. differentiation day D105: WT 3.39 vs. AD 20.34% in the case of spikes, P &lt; 0.01, and WT 1.7 vs. AD 17.0 % in the case of bursts, P &lt; 0.05). On some days, a significant increase was also observed in the case of burst duration (D118; P &lt; 0.05), burst count (D105; P &lt; 0.05), or intraburst spike number (D114; P &lt; 0.05). These pilot data indicate that neurodegenerative cerebral organoids show signs of heightened neural tissue excitability compared to healthy ones. Our ongoing analysis aims to validate these pilot results further and incorporate data describing the content of NP in these cerebral organoids for establishing an association between neurodegeneration and increased neuronal excitability.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

30210 - Clinical neurology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů