ArticleBMB reports2020
Altered expression of parvalbumin immunoreactivity in rat main olfactory bulb following pilocarpine-induced status epilepticus.
Article in BMB reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 7 citations in OpenAlex.
- Conserved Kir channel mechanisms governing intrinsic excitability in human and rodent parvalbumin neurons.Communications biology · 2026Article
- Effect of low frequency stimulation of olfactory bulb and olfactory epithelium on epileptiform activity and synaptic plasticity following pentylenetetrazol administration in rats.Behavioral and brain functions : BBF · 2026Article
- Regulation of input excitability in human and mouse parvalbumin interneurons by Kir potassium channels.bioRxiv : the preprint server for biology · 2025Article
- Unraveling modulation effects on albumin synthesis and inflammation by Striatin, a bioactive protein fraction isolated fromHeliyon · 2024Article
- Differences in Evolution of Epileptic Seizures and Topographical Distribution of Tissue Damage in Selected Limbic Structures Between Male and Female Rats Submitted to the Pilocarpine Model.Frontiers in neurology · 2022Article
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Authors and funding
4 authors at 1 institution in 1 country.
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Abstract
Epilepsy is a chronic neurological disease characterized by spontaneous recurrent seizures and caused by various factors and mechanisms. Malfunction of the olfactory bulb is frequently observed in patients with epilepsy. However, the morphological changes in the olfactory bulb during epilepsy-induced neuropathology have not been elucidated. Therefore, in the present study, we investigated the expression of parvalbumin (PV), one of the calcium-binding proteins, and morphological changes in the rat main olfactory bulb (MOB) following pilocarpine- induced status epilepticus (SE). Pilocarpine-induced SE resulted in neuronal degeneration in the external plexiform layer (EPL) and glomerular layer (GL) of the MOB. PV immunoreactivity was observed in the neuronal somas and processes in the EPL and GL of the control group. However, six hours after pilocarpine administration, PV expression was remarkably decreased in the neuronal processes compared to the somas and the average number of PV-positive interneurons was significantly decreased. Three months after pilocarpine treatment, the number of PV-positive interneurons was also significantly decreased compared to the 6 hour group in both layers. In addition, the number of NeuN-positive neurons was also significantly decreased in the EPL and GL following pilocarpine treatment. In double immunofluorescence staining for PV and MAP2, the immunoreactivity for MAP2 around the PV-positive neurons was significantly decreased three months after pilocarpine treatment. Therefore, the present findings suggest that decreases in PV-positive GABAergic interneurons and dendritic density in the MOB induced impaired calcium buffering and reciprocal synaptic transmission. Thus, these alterations may be considered key factors aggravating olfactory function in patients with epilepsy. [BMB Reports 2020; 53(4): 234-239].
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