SGLT-2 inhibitors as potential anticonvulsants: empagliflozin, but not dapagliflozin, renders a pronounced effect and potentiates the sodium valproate activity in pentylenetetrazole-induced seizures
DOI:
https://doi.org/10.15587/2519-4852.2022.266065Keywords:
anti-epileptic medicines, adjuvants, inhibitors of SGLT-2, chemo-induced seizures, miceAbstract
On the way to the search for effective adjuvant medicines for epilepsy treatment, antidiabetic medicines such as sodium-glucose cotransporter-2 inhibitors, which are expressed not only in the kidneys but also in the brain, attract attention. From previous studies, it is known that dapagliflozin improves electroencephalographic parameters in rats on the model of pentylenetetrazole-induced seizures. However, the anticonvulsant potential of other medicines from this group needs to be clarified.
The aim of the study is to estimate the effect of empagliflozin, dapagliflozin per se and their combinations with sodium valproate on pentylenetetrazole-induced seizures, as well as on muscle tone and motor coordination in mice.
Material and methods. 42 random-bred male albino mice weighing 24-28 g were used in the experiments. Empagliflozin (20 mg/kg) and dapagliflozin (50 mg/kg) were administered intragastrically for 3 days. The classic anticonvulsant sodium valproate (150 mg/kg) per se, in combination with the medicines mentioned above, was administered in a similar regimen. On the second day, 30 minutes after administering all medicines, their effect on muscle tone and coordination of movements was determined in the rotarod test. On the third day, 30 minutes after the last administration of the medicines, their effect on pentylenetetrazole-induced (80 mg/kg subcutaneously) seizures was studied.
Results. For the first time, a pronounced anticonvulsant effect of empagliflozin was established both when used alone (a significant increase in latency of the convulsions and a decrease in lethality by 43 %) and especially in combination with sodium valproate (a significant increase in latency of the convulsions, a decrease in the number and severity of seizures and a decrease in lethality by 83 %), as well as the absence of a muscle relaxant effect in both cases. Dapagliflozin has neither its anticonvulsant properties nor its effect on the action of sodium valproate. However, this medicine caused muscle relaxation, especially when combined with sodium valproate.
Conclusions. The results suggest that empagliflozin, unlike dapagliflozin, has a high potential as an adjuvant medicine in treating epilepsy, as it enhances the efficacy of the classic anticonvulsant sodium valproate without muscle relaxant side effects
Supporting Agency
- No. 0120U102460 "Rationale for improving the treatment of multidrug-resistant epilepsy through the combined use of classic anticonvulsants with other medicines" (2020/2022), which is performed at the expense of the State Budget of Ukraine.
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