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Permanent URI for this collectionhttps://hdl.handle.net/11443/932

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Subject: search.filters.subject.kindling

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    Pharmacologically induced absence seizures versus kindling in Wistar rats
    (KARE PUBL, 2020-01-01) Carcak, Nihan; Sahiner, Melike; Akman, Ozlem; Idrizoglu, Medine Gulcebi; Cortez, Miguel A.; Snead, O. Carter; Eskazan, Esat; Onat, Filiz
    OBJECTIVE: This study aimed to investigate the effects of gamma-butyrolactone (GBL), a prodrug of gamma-Hydroxybutyric acid-induced absence seizures on the development of kindling in Wistar rats. METHODS: Three groups of adult male Wistar rats under anesthesia were implanted with bilateral cortical recording elec- trodes for the GBL group (GBL) and/or bipolar stimulation electrodes into the right basolateral amygdala for the Kindling group (KI) alone and Kindling plus GBL group (GBL+KI). Rats in the KI and GBL+KI groups were stimulated twice daily at the afterdischarge threshold until they reached Racine's stage 5 seizure state. The animals in the GBL + group had an i.p injection of GBL 20 minutes before each electrical stimulation, and the effects of GBL-induced seizures on the development of kindling were investigated. The animals in the GBL group were injected GBL twice daily i.p. for 15 days without receiving any electrical stimulation. RESULTS: The KI animals reached stage 5 seizure stage at 12th stimulations, whereas the GBL+KI rats reached at 27th stimulations. The mean numbers of stimulations needed for the development of the first stage 3, 4, or 5 generalized seizures were significantly higher in the GBL+KI group than the KI group. CONCLUSION: The resistance to amygdala kindling in the GBL model can be modulated by the absence seizure mechanism alone, without the intervention of an abnormal genetic background.
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    Investigation of Neurogenesis in Kindled Wistar and Genetic Absence Epilepsy Rats
    (MARMARA UNIV, INST HEALTH SCIENCES, 2022-01-01) Kandemir, Cansu; Yavuz, Melis; Karakaya, Fatma Bedia; Kaya, Ozlem Tugce Cilingir; Onat, Filiz; Sirvanci, Serap
    Objective: The most common type of epilepsy affecting about 50 million people worldwide is temporal lobe epilepsy (TLE). Chemical and electrical kindling methods in animals can be used to form TLE model. In the present study, it was aimed to investigate neurogenesis in the hippocampus of adult kindled Wistar rats and genetic absence epilepsy rats from Strasbourg (GAERS) rats by immunofluorescence methods.Methods: Adult Wistar and GAERS albino rats weighing 250-300 gr were injected pentylenetetrazole (PTZ) (35 mg/kg, s.c.) every other day to produce chemical kindling. Animals having 5 times grade 5 seizures were considered to be kindled. Intracardiac perfusion was performed under deep anesthesia on the 7th and 14th days after the last grade 5 seizure. Immunofluorescence methods were used to demonstrate newly formed neurons, astroglial cells, and mature neurons, by using anti-doublecortin (DCX), anti-glial fibrillary acidic protein (GFAP), and antineuronal nuclear antigen (NeuN) primary antibodies, respectively. Sections were then examined under a fluorescence microscope.Results: DCX (+) cells were found to be increased in GAERS control groups compared to the Wistar control groups