1
|
Almeida Barros WM, de Sousa Fernandes MS, Silva RKP, da Silva KG, da Silva Souza AP, Rodrigues Marques Silva M, da Silva ABJ, Jurema Santos GC, Dos Santos MERA, do Carmo TS, de Souza SL, de Oliveira Nogueira Souza V. Does the enriched environment alter memory capacity in malnourished rats by modulating BDNF expression? J Appl Biomed 2021; 19:125-132. [PMID: 34907761 DOI: 10.32725/jab.2021.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 09/03/2021] [Indexed: 11/05/2022] Open
Abstract
Environmental factors interfere in the neural plasticity processes. Among these, malnutrition in the early stages of life stands out as one of the main non-genetic factors that can interfere in the morphofunctional development of the nervous system. Furthermore, sensory stimulation from enriched environments (EE) also interferes with neural development. These two factors can modify areas related to memory and learning as the hippocampus, through mechanisms related to the gene expression of brain-derived neurotrophic factor (BDNF). The BDNF may interfere in synaptic plasticity processes, such as memory. In addition, these changes in early life may affect the functioning of the hippocampus during adulthood through mechanisms mediated by BDNF. Therefore, this study aims to conduct a literature review on the effects of early malnutrition on memory and the relationship between the underlying mechanisms of EE, BDNF gene expression, and memory. In addition, there are studies that demonstrate the effect of EE reversal on exposure to changes in the functioning of hippocampal malnutrition in adult rats that were prematurely malnourished. Thereby, evidence from the scientific literature suggests that the mechanisms of synaptic plasticity in the hippocampus of adult animals are influenced by malnutrition and EE, and these alterations may involve the participation of BDNF as a key regulator in memory processes in the adult animal hippocampus.
Collapse
Affiliation(s)
- Waleska Maria Almeida Barros
- Universidade Federal de Pernambuco, Programa de Pos-graduacao em Neuropsiquiatria e Ciencias do Comportamento, Recife, Brasil.,Centro Universitario Facol / Centro Integrado de Tecnologias em Neurociencia (CITENC), Vitoria de Santo Antao, Brasil
| | | | - Roberta Karlize Pereira Silva
- Centro Universitario Facol / Centro Integrado de Tecnologias em Neurociencia (CITENC), Vitoria de Santo Antao, Brasil
| | - Karollainy Gomes da Silva
- Centro Universitario Facol / Centro Integrado de Tecnologias em Neurociencia (CITENC), Vitoria de Santo Antao, Brasil
| | - Ana Patricia da Silva Souza
- Universidade Federal de Pernambuco, Programa de Pos-graduacao em Neuropsiquiatria e Ciencias do Comportamento, Recife, Brasil.,Centro Universitario Facol / Centro Integrado de Tecnologias em Neurociencia (CITENC), Vitoria de Santo Antao, Brasil
| | - Mariluce Rodrigues Marques Silva
- Universidade Federal de Pernambuco, Programa de Pos-graduacao em Neuropsiquiatria e Ciencias do Comportamento, Recife, Brasil.,Centro Universitario Facol / Centro Integrado de Tecnologias em Neurociencia (CITENC), Vitoria de Santo Antao, Brasil
| | - Ana Beatriz Januario da Silva
- Universidade Federal de Pernambuco, Programa de Pos-graduacao em Neuropsiquiatria e Ciencias do Comportamento, Recife, Brasil.,Centro Universitario Facol / Centro Integrado de Tecnologias em Neurociencia (CITENC), Vitoria de Santo Antao, Brasil
| | | | | | - Taciane Silva do Carmo
- Centro Universitario Facol / Centro Integrado de Tecnologias em Neurociencia (CITENC), Vitoria de Santo Antao, Brasil
| | - Sandra Lopes de Souza
- Universidade Federal de Pernambuco, Programa de Pos-graduacao em Neuropsiquiatria e Ciencias do Comportamento, Recife, Brasil
| | | |
Collapse
|
2
|
Xiang T, Luo X, Zeng C, Li S, Ma M, Wu Y. Klotho ameliorated cognitive deficits in a temporal lobe epilepsy rat model by inhibiting ferroptosis. Brain Res 2021; 1772:147668. [PMID: 34592245 DOI: 10.1016/j.brainres.2021.147668] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/01/2021] [Accepted: 09/22/2021] [Indexed: 12/29/2022]
Abstract
Cognitive deficits are among the most common comorbidities of temporal lobe epilepsy (TLE). Ferroptosis associated with the accumulation of iron overload-dependent lipid peroxidation produces significant cognitive deficits in TLE. The anti-aging protein, klotho, has been shown to exert neuroprotective effects while enhancing cognition in neurodegenerative disorders. However, the role of klotho in TLE progression has not been established. In this study, we evaluated the effects and underlying mechanisms of klotho in a rat model of TLE induced by lithium-chloride and pilocarpine (LiCl-Pilo). The expression of klotho was found to be inhibited in the hippocampus following LiCl-Pilo induced TLE in rats. An adeno-virus (AAV), which mediated klotho overexpression (AAV-KL) was injected into the bilateral hippocampus of the rat models. After 3 weeks, rats were treated through intraperitoneal injections of LiCl-Pilo. After 9 weeks, AAV-KL was found to have significantly induced klotho overexpression in the hippocampus, effectively ameliorated cognitive deficits and exerted neuroprotective effects in LiCl-Pilo induced TLE rat models. Klotho significantly prevented ferroptosis and iron overload. Meanwhile, klotho regulated the expressions of divalent metal transporter 1 (DMT 1) and ferroportin (FPN) that were associated with iron accumulation in the hippocampus. Furthermore, klotho significantly elevated glutathione peroxidase-4 (GPX-4) and glutathione (GSH) levels while suppressed reactive oxygen species (ROS) levels. In conclusion, klotho ameliorated cognitive deficits and exerted neuroprotective effects by inhibiting ferroptosis in LiCl-Pilo induced TLE rat models.
Collapse
Affiliation(s)
- Tao Xiang
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, 6th Shuangyong Road, Nanning, Guangxi, China; The First Affiliated Hospital, Department of Neurology, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Xiaodan Luo
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, 6th Shuangyong Road, Nanning, Guangxi, China
| | - Chunmei Zeng
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, 6th Shuangyong Road, Nanning, Guangxi, China
| | - Sijun Li
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, 6th Shuangyong Road, Nanning, Guangxi, China
| | - Meigang Ma
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, 6th Shuangyong Road, Nanning, Guangxi, China
| | - Yuan Wu
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, 6th Shuangyong Road, Nanning, Guangxi, China.
| |
Collapse
|
3
|
Zhang X, Yang Y, Guo L, Zhou J, Niu J, Wang P, Qiang Y, Liu K, Wen Y, Zhang L, Wang F. GPER1 Modulates Synaptic Plasticity During the Development of Temporal Lobe Epilepsy in Rats. Neurochem Res 2021; 46:2019-2032. [PMID: 34076791 DOI: 10.1007/s11064-021-03336-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 11/30/2022]
Abstract
G-protein coupled estrogen receptor 1 (GPER1) is a novel type of estrogen receptor. Several studies have shown that it has an anti-inflammatory action,which plays an important role in remyelination and cognitive ability adjustment. However, whether it is involved in the development of temporal lobe epilepsy (TLE) is still unknown. The present study established a TLE model by intraperitoneal injection of lithium chloride (3 mmol/kg) and pilocarpine (50 mg/kg) in rats to study the effect of GPER1 in the synaptic plasticity during the development of temporal lobe epilepsy. A microinjection cannula was implanted into the lateral ventricle region of rats via a stereotaxic instrument. G-1 is the specific GPER1 agonist and G15 is the specific GPER1 antagonist. The G1 or G15 and Dimethyl sulfoxide were injected into the rat brains in the intervention groups and control group, respectively. After G1 intervention, the learning and memory abilities and hippocampal neuron damage in epileptic rats were significantly improved, while G15 weakened the neuroprotective effect of GPER1. Meanwhile, G1 controlled the abnormal formation of hippocampal mossy fiber sprouting caused by seizures, and participated in the regulation of synaptic plasticity by reducing the expression of Synapsin I and increasing the expression of gephyrin. Inhibitory synapse gephyrin may play a significant role in synaptic plasticity.
Collapse
Affiliation(s)
- Xian Zhang
- Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of the National Key Laboratory, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
| | - Yang Yang
- Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of the National Key Laboratory, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
- School of Basic Medical Sciences, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
| | - Li Guo
- School of Basic Medical Sciences, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
| | - Jinyu Zhou
- School of Public Health and Management, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
| | - Jianguo Niu
- Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of the National Key Laboratory, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
- School of Basic Medical Sciences, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
| | - Peng Wang
- Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of the National Key Laboratory, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
| | - Yuanyuan Qiang
- Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of the National Key Laboratory, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
| | - Kunmei Liu
- Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of the National Key Laboratory, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
| | - Yujun Wen
- Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of the National Key Laboratory, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
- School of Basic Medical Sciences, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China
| | - Lianxiang Zhang
- Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of the National Key Laboratory, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China.
- School of Basic Medical Sciences, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China.
| | - Feng Wang
- Ningxia Key Laboratory of Cerebrocranial Diseases, Incubation Base of the National Key Laboratory, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750001, Ningxia, China.
- Department of Neurosurgery, General Hospital of Ningxia Medical University, 804 Shengli Street, Yinchuan, 750001, Ningxia, China.
| |
Collapse
|
4
|
Anticonvulsant mechanisms of the ketogenic diet and caloric restriction. Epilepsy Res 2020; 168:106499. [PMID: 33190066 DOI: 10.1016/j.eplepsyres.2020.106499] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/16/2020] [Accepted: 10/27/2020] [Indexed: 01/29/2023]
Abstract
Many treatments have been proposed to control epileptic seizures, such as the ketogenic diet and caloric restriction. However, seizure control has not yet been improved completely in all patients. Probably, due to the lack of understanding regarding this neurological disorder pathogenesis or pathophysiology, including its molecular approach. Currently, there is not much information about the molecular processes and genes involved, and their relation to the possible beneficial effects of diet therapy on epilepsy. The ketogenic diet and caloric restriction are implicated in potential anti-seizure mechanisms related to the gut microbiome, metabolic pathways, hormones and neurotransmitters, mitochondria improvement, a role in inflammation, and oxidative stress, among others. In this review, we pretend to describe the molecular mechanism and the possible genes involved in the different ketogenic diet and caloric restriction mechanisms of action described to decrease neural excitability and, therefore, epileptic seizures, especially when conventional treatment is not enough to achieve control of epilepsy.
Collapse
|
5
|
Benevides RDDL, de-Lima SMV, Chagas CL, de Lima CF, Abadie-Guedes R, Guedes RCA. Lactation in large litters influences anxiety, memory, and spreading depression in adult male rats that were chronically subjected to a non-convulsive pilocarpine dose. Nutr Neurosci 2020; 25:846-856. [PMID: 32912080 DOI: 10.1080/1028415x.2020.1819103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Objectives: Unfavorable lactation influences brain excitability and behavioral reactions in adults. Administration early in life of the cholinergic agonist, pilocarpine, even at non-convulsive doses, alters the brain excitability-related phenomenon known as cortical spreading depression (CSD), and produce anxiogenic-like behavior. However, the influence of unfavorable lactation on the CSD- and memory-effects of pilocarpine administration late in life has not been investigated. Herein, we analyzed the ponderal, electrophysiological (CSD), and behavioral effects of chronic treatment with a non-convulsive dose of pilocarpine, in adult rats suckled under favorable and unfavorable conditions.Methods: Wistar rats were suckled in litters with 9 or 15 pups (groups L9 and L15, respectively). A very low dose of pilocarpine (45/mg/kg/day) was chronically administered in mature rats from postnatal day (PND) 69-90. Behavioral tests occurred at PND91 [elevated plus maze (EPM)], PND93 [open field (OF)], and PND94-95 [object recognition memory (ORM)]. CSD was recorded between PND96-120.Results: Pilocarpine-treated rats performed worse in the anxiety and memory tests, and displayed lower CSD propagation velocity when compared with saline-treated controls. In addition, L15 rats showed an increase in the distance traveled and a decrease in the immobility time in the EPM, impaired ORM, and accelerated CSD propagation when compared with L9 rats (p ≤ 0.05).Discussion: These data suggest that sub-convulsive pilocarpine treatment in adult rats can affect behavioral and excitability-related reactions. In addition, unfavorable lactation increases the ambulatory effects of pilocarpine. Further studies should investigate the possible cholinergic molecular mechanisms involved in these effects.
Collapse
Affiliation(s)
| | | | - Camila Lima Chagas
- Department of Nutrition, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - Clara Farah de Lima
- Department of Nutrition, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - Ricardo Abadie-Guedes
- Department of Physiology and Pharmacology, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | | |
Collapse
|
6
|
Staples MC, Fannon MJ, Mysore KK, Dutta RR, Ongjoco AT, Quach LW, Kharidia KM, Somkuwar SS, Mandyam CD. Dietary restriction reduces hippocampal neurogenesis and granule cell neuron density without affecting the density of mossy fibers. Brain Res 2017; 1663:59-65. [PMID: 28284897 DOI: 10.1016/j.brainres.2017.02.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 02/04/2017] [Accepted: 02/27/2017] [Indexed: 11/25/2022]
Abstract
The hippocampal formation undergoes significant morphological and functional changes after prolonged caloric and dietary restriction (DR). In this study we tested whether prolonged DR results in deleterious alterations in hippocampal neurogenesis, density of granule cell neurons and mossy fibers, all of which support plasticity in the dentate gyrus. Young adult animals either experienced free access to food (control condition), or every-other-day feeding regimen (DR condition) for 3months. The number of Ki-67 cells and 28-day old 5-bromo-2'-deoxyuridine (BrdU) cells were quantified in the dorsal and ventral dentate gyrus to determine the effect of DR on cellular proliferation and survival of neural progenitor cells in the anatomically defined regions of the dentate gyrus. The density of granule cell neurons and synaptoporin were also quantified to determine the effect of DR on granule cell neurons and mossy fiber projections in the dentate gyrus. Our results show that DR increases cellular proliferation and concurrently reduces survival of newly born neurons in the ventral dentate gyrus without effecting the number of cells in the dorsal dentate gyrus. DR reduced density of granule cell neurons in the dorsal dentate gyrus. These alterations in the number of granule cell neurons did not affect mossy fiber density in DR animals, which was visualized as no differences in synaptoporin expression. Our findings demonstrate that granule cell neurons in the dentate gyrus are vulnerable to chronic DR and that the reorganization of granule cells in the dentate gyrus subregions is not producing concomitant alterations in dentate gyrus neuronal circuitry with this type of DR.
Collapse
Affiliation(s)
- Miranda C Staples
- Veterans Medical Research Foundation, VA San Diego Healthcare System, La Jolla, CA, USA
| | - McKenzie J Fannon
- Veterans Medical Research Foundation, VA San Diego Healthcare System, La Jolla, CA, USA
| | - Karthik K Mysore
- Veterans Medical Research Foundation, VA San Diego Healthcare System, La Jolla, CA, USA
| | - Rahul R Dutta
- Veterans Medical Research Foundation, VA San Diego Healthcare System, La Jolla, CA, USA
| | - Alexandria T Ongjoco
- Veterans Medical Research Foundation, VA San Diego Healthcare System, La Jolla, CA, USA
| | - Leon W Quach
- Veterans Medical Research Foundation, VA San Diego Healthcare System, La Jolla, CA, USA
| | - Khush M Kharidia
- Veterans Medical Research Foundation, VA San Diego Healthcare System, La Jolla, CA, USA
| | - Sucharita S Somkuwar
- Veterans Medical Research Foundation, VA San Diego Healthcare System, La Jolla, CA, USA
| | - Chitra D Mandyam
- Veterans Medical Research Foundation, VA San Diego Healthcare System, La Jolla, CA, USA.
| |
Collapse
|