2024
The impact of neurodegeneration on the electrical activity of brain tissue: multielectrode array analysis
ANGELOVSKI, Andrijana, Barbora LIŠČÁKOVÁ, Olga ŠVECOVÁ, Hana HŘÍBKOVÁ, Jiří SEDMÍK et. al.Základní údaje
Originální název
The impact of neurodegeneration on the electrical activity of brain tissue: multielectrode array analysis
Autoři
ANGELOVSKI, Andrijana (688 Srbsko, domácí), Barbora LIŠČÁKOVÁ (703 Slovensko, domácí), Olga ŠVECOVÁ (203 Česká republika, domácí), Hana HŘÍBKOVÁ (203 Česká republika, domácí), Jiří SEDMÍK (203 Česká republika, domácí), Dáša BOHAČIAKOVÁ (703 Slovensko, domácí), Petr KLIMEŠ (203 Česká republika), Martina KOLAJOVÁ, Milan BRÁZDIL (203 Česká republika) a Markéta BÉBAROVÁ (203 Česká republika, garant, domácí)
Vydání
FENS Forum 2024, 2024
Další údaje
Jazyk
angličtina
Typ výsledku
Konferenční abstrakt
Obor
30210 Clinical neurology
Stát vydavatele
Rakousko
Utajení
není předmětem státního či obchodního tajemství
Organizační jednotka
Lékařská fakulta
Klíčová slova anglicky
cerebral organoids; Alzheimer disease; electrical activity; multielectrode array analysis
Příznaky
Mezinárodní význam
Změněno: 19. 8. 2024 14:19, Mgr. Tereza Miškechová
Anotace
V originále
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 < 0.01, and WT 1.7 vs. AD 17.0 % in the case of bursts, P < 0.05). On some days, a significant increase was also observed in the case of burst duration (D118; P < 0.05), burst count (D105; P < 0.05), or intraburst spike number (D114; P < 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.
Návaznosti
GA24-12028S, projekt VaV |
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LX22NPO5107, projekt VaV |
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MUNI/A/1547/2023, interní kód MU |
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NU22-04-00366, projekt VaV |
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