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Linagliptin, a Selective DPP-4 Inhibitor, Attenuates Ketamine- and Diazepam-Induced Deficits in Passive Avoidance
Krzysztof Fronc1, Piotr Listos2, Paulina Kasprzak3
1Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Chodźki 4a St., 20-093 Lublin, Poland.
Linagliptin, a type 2 diabetes drug, improved memory performance in mice by increasing brain-derived neurotrophic factor (BDNF) in the prefrontal cortex. This suggests potential benefits for central nervous system function beyond diabetes management.
Area of Science:
- Neuropharmacology
- Endocrinology
Background:
- Linagliptin is a dipeptidyl peptidase-4 (DPP-4) inhibitor used for type 2 diabetes, enhancing GLP-1 signaling.
- GLP-1 receptors are present in the brain, suggesting DPP-4 inhibitors may affect central nervous system function.
Purpose of the Study:
- To investigate linagliptin's effects on memory deficits induced by ketamine and diazepam in mice.
- To determine if linagliptin influences brain-derived neurotrophic factor (BDNF) levels in the prefrontal cortex and hippocampus.
Main Methods:
- Mice were administered linagliptin (10 and 20 mg/kg) and tested for passive avoidance performance after ketamine or diazepam administration.
- Brain-derived neurotrophic factor (BDNF) levels were measured using ELISA in the prefrontal cortex and hippocampus.
Main Results:
- Linagliptin significantly attenuated ketamine- and diazepam-induced deficits in passive avoidance performance.
- Both acute and chronic linagliptin treatment increased BDNF levels in the prefrontal cortex.
- No significant changes in BDNF levels were observed in the hippocampus.
Conclusions:
- Linagliptin demonstrates potential in modulating passive avoidance performance in mice.
- Increased BDNF levels in the prefrontal cortex are associated with linagliptin's effects.
- Further research is needed to fully elucidate the neuropharmacological mechanisms involved.
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