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Specialty: Neurology
Source: Brain Research
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Total 5629 results found since Jan 2013.
Motivation-related influences on fNIRS signals during walking exercise: a permutation entropy approach
This study provides early evidence to suggest that while different motivational environments during walking activity influence the magnitude of fNIRS signals, they may not influence the regularity of cortical signals. However, the magnitude of PE difference between motivational conditions was related to self-determined motivation in the aPFC, and this is an area warranting further investigation.PMID:37733031 | DOI:10.1007/s00221-023-06707-5
Source: Brain Research - September 21, 2023 Category: Neurology Authors: Sarah M Schwab Dalton Cooper Nicole S Carver Sarah Doren Pierce Boyne Source Type: research
The effect of type 2 diabetes and diabetic peripheral neuropathy on predictive grip force control
This study investigated the impact of type 2 diabetes and diabetic peripheral neuropathy on grip force control during object manipulation. The study included three age-matched groups: type 2 diabetes alone (n = 11), type 2 diabetes with neuropathy (n = 13), and healthy controls (n = 12). Grip force control variables derived from lifting and holding an experimental cup were the ratio between grip force and load forces during lifting (GFR), latency 1 and latency 2, which represented the time between the object's grip and its lift-off from the table, and the period between object's lift-off and the grip force peak, respective...
Source: Brain Research - September 21, 2023 Category: Neurology Authors: Marcio Dos Santos Abdalghani Yahya Patricia Kluding Mamatha Pasnoor Jo Wick Wen Liu Source Type: research
Effect of electrical and chemical (activation versus inactivation) stimulation of the infralimbic division of the medial prefrontal cortex in rats with chronic neuropathic pain
This study aimed to investigate the participation of the infralimbic division (IFL) of the mPFC in chronic NP, as well as the role of the N-methyl-D-aspartic acid receptor (NMDAr) in the elaboration of chronic NP. Male Wistar rats were submitted to the von Frey and acetone tests to assess mechanical and cold allodynia after 21 days of chronic constriction injury (CCI) of the sciatic nerve or Sham-procedure ("false operated"). Electrical neurostimulation of the IFL/mPFC was performed by low-frequency stimuli (20 μA, 100 Hz) applied for 15 s by deep brain stimulation (DBS) device 21 days after CCI. Either cobalt chloride (C...
Source: Brain Research - September 19, 2023 Category: Neurology Authors: Thais Lohanny Moura-Pacheco Renata Cristina Martins-Pereira Priscila Medeiros Louren ço Sbragia Christie Ramos Andrade Leite-Panissi H élio Rubens Machado Norberto Cysne Coimbra Renato Leonardo de Freitas Source Type: research
Resveratrol ameliorates diabetic encephalopathy through PDE4D/PKA/Drp1 signaling
This study illustrated the role of PDE4D in DE and investigated whether resveratrol protected against DE via inhibiting PDE4D. db/db male mice and hippocampus cell line (HT22) were used to investigate the role of PDE4D and the protective effect of resveratrol on cognitive function under high glucose (HG). PDE4D overexpression or knockdown lentivirus and PKA specific inhibitor H89 were used to further identify the indispensable role of PDE4D/PKA signaling pathway in resveratrol's amelioration effect of neurotoxicity. Resveratrol attenuated cognitive impairment in db/db mice, reduced PDE4D protein, restored the impaired mito...
Source: Brain Research - September 18, 2023 Category: Neurology Authors: Yanjuan Cao Wen Sun Chang Liu Zihui Zhou Zongli Deng Mingjie Zhang Meng Yan Xiaoxing Yin Xia Zhu Source Type: research
Comparison of three DREADD agonists acting on Gq-DREADDs in the ventral tegmental area to alter locomotor activity in tyrosine hydroxylase:Cre male and female rats
CONCLUSIONS: Large individual variability was observed in both DREADD agonist behavioral effects and receptor expression. These results suggest further basic research would facilitate the utility of these chemogenetic tools for behavioral neuroscience research.PMID:37722510 | DOI:10.1016/j.bbr.2023.114674
Source: Brain Research - September 18, 2023 Category: Neurology Authors: Hannah L Robinson Katherine L Nicholson Keith L Shelton Peter J Hamilton Matthew L Banks Source Type: research
Protective effect of cornuside on OGD/R injury in SH-SY5Y cells and its underlying mechanism
In this study, we treated SH-SY5Y cells with OGD/R to simulated ischemia/reperfusion (I/R) injury. Using high-throughput transcriptome sequencing, differentially expressed genes were analyzed in the OGD/R group versus the OGD/R + Cornuside (10 μmol/L) group to explore the neuroprotective mechanisms of Cornuside. The differentially expressed genes were mainly enriched in apoptosis signaling pathway, cell cycle, DNA damage and repair, and p38/JNK MAPK and p53 signaling pathways. The results showed that OGD/R significantly reduced the survival of SH-SY5Y cells, induced apoptosis, disrupted the nucleus, promoted the release o...
Source: Brain Research - September 18, 2023 Category: Neurology Authors: Xinyu Wang Chao Yan Chaoyun Wang Xiaoyan Xu Zhihao Liu Wang Xin Jianwei Gong Source Type: research
Resveratrol ameliorates diabetic encephalopathy through PDE4D/PKA/Drp1 signaling
This study illustrated the role of PDE4D in DE and investigated whether resveratrol protected against DE via inhibiting PDE4D. db/db male mice and hippocampus cell line (HT22) were used to investigate the role of PDE4D and the protective effect of resveratrol on cognitive function under high glucose (HG). PDE4D overexpression or knockdown lentivirus and PKA specific inhibitor H89 were used to further identify the indispensable role of PDE4D/PKA signaling pathway in resveratrol's amelioration effect of neurotoxicity. Resveratrol attenuated cognitive impairment in db/db mice, reduced PDE4D protein, restored the impaired mito...
Source: Brain Research - September 18, 2023 Category: Neurology Authors: Yanjuan Cao Wen Sun Chang Liu Zihui Zhou Zongli Deng Mingjie Zhang Meng Yan Xiaoxing Yin Xia Zhu Source Type: research
Comparison of three DREADD agonists acting on Gq-DREADDs in the ventral tegmental area to alter locomotor activity in tyrosine hydroxylase:Cre male and female rats
CONCLUSIONS: Large individual variability was observed in both DREADD agonist behavioral effects and receptor expression. These results suggest further basic research would facilitate the utility of these chemogenetic tools for behavioral neuroscience research.PMID:37722510 | DOI:10.1016/j.bbr.2023.114674
Source: Brain Research - September 18, 2023 Category: Neurology Authors: Hannah L Robinson Katherine L Nicholson Keith L Shelton Peter J Hamilton Matthew L Banks Source Type: research
Protective effect of cornuside on OGD/R injury in SH-SY5Y cells and its underlying mechanism
In this study, we treated SH-SY5Y cells with OGD/R to simulated ischemia/reperfusion (I/R) injury. Using high-throughput transcriptome sequencing, differentially expressed genes were analyzed in the OGD/R group versus the OGD/R + Cornuside (10 μmol/L) group to explore the neuroprotective mechanisms of Cornuside. The differentially expressed genes were mainly enriched in apoptosis signaling pathway, cell cycle, DNA damage and repair, and p38/JNK MAPK and p53 signaling pathways. The results showed that OGD/R significantly reduced the survival of SH-SY5Y cells, induced apoptosis, disrupted the nucleus, promoted the release o...
Source: Brain Research - September 18, 2023 Category: Neurology Authors: Xinyu Wang Chao Yan Chaoyun Wang Xiaoyan Xu Zhihao Liu Wang Xin Jianwei Gong Source Type: research
Transcranial photobiomodulation mitigates learning and memory impairments induced by hindlimb unloading in a mouse model of microgravity exposure by suppression of oxidative stress and neuroinflammation signaling pathways
Brain Res. 2023 Sep 15:148583. doi: 10.1016/j.brainres.2023.148583. Online ahead of print.ABSTRACTProlonged microgravity exposure causes cognitive impairment. Evidence shows that oxidative stress and neuroinflammation are involved in the causation. Here, we explore the effectiveness of transcranial near-infrared photobiomodulation (PBM) on cognitive deficits in a mouse model of simulated microgravity. 24 adult male C57BL/6 mice were assigned into three groups (8 in each); control, hindlimb unloading (HU), and HU+PBM groups. After surgery to fit the suspension fixing, the animals were housed either in HU cages or in their n...
Source: Brain Research - September 17, 2023 Category: Neurology Authors: Sareh Kazmi Fereshteh Farajdokht Reza Meynaghizadeh-Zargar Saeed Sadigh-Eteghad Amir Pasokh Mohammad Farzipour Narmin Farazi Michael R Hamblin Javad Mahmoudi Source Type: research
Breastfeeding promotes oligodendrocyte precursor cells in a demyelinated region of the corpus callosum
Brain Res. 2023 Sep 15:148584. doi: 10.1016/j.brainres.2023.148584. Online ahead of print.ABSTRACTDemyelination alters the conduction of neuronal signals and hampers sensory-motor functions. Experimental and clinical evidence suggest that breastfeeding exerts a promyelinating impact on the maternal brain. The mechanism underlying this neuroprotective effect is not well-understood. In the present paper, we assessed the impact of rat lactation on lysolecithin-induced demyelination injury within the corpus callosum of lactating and non-lactating postpartum rats. We show that lactation enhanced the cell density of oligodendroc...
Source: Brain Research - September 17, 2023 Category: Neurology Authors: Abdeslam Mouihate Samah Kalakh Source Type: research
Where in the brain do internally generated and externally presented visual information interact?
Brain Res. 2023 Sep 15:148582. doi: 10.1016/j.brainres.2023.148582. Online ahead of print.ABSTRACTConscious experiences normally result from the flow of external input into our sensory systems. However, we can also create conscious percepts independently of sensory stimulation. These internally generated percepts are referred to as mental images, and they have many similarities with real visual percepts. Consequently, mental imagery is often referred to as "seeing in the mind's eye". While the neural basis of imagery has been widely studied, the interaction between internal and external sources of visual information has re...
Source: Brain Research - September 17, 2023 Category: Neurology Authors: Jussi Alho Athanasios Gotsopoulos Juha Silvanto Source Type: research
Rats have low motivation to self-administer oral methamphetamine across increasing response requirements
Behav Brain Res. 2023 Sep 16;455:114673. doi: 10.1016/j.bbr.2023.114673. Online ahead of print.ABSTRACTMethamphetamine (METH) is a psychostimulant drug that has become increasingly popular in recent years, with overdose deaths more than doubling during the second half of the 2010s. As methamphetamine use disorder rates continue to increase, finding effective treatment strategies to decrease METH dependence is important. Animal studies are well-suited for studying the neurobiological mechanisms underlying addiction-like behaviors. Although individuals can ingest METH orally, few studies have examined oral METH self-administ...
Source: Brain Research - September 17, 2023 Category: Neurology Authors: Justin R Yates Kevin L Berling Maria R Broderick Rayah E Bako Sadie L Dillon Source Type: research
CircNCOA4 knockdown attenuates OGD-induced neuron injury through miR-338-5p/PDE4B axis
Exp Brain Res. 2023 Sep 16. doi: 10.1007/s00221-023-06702-w. Online ahead of print.ABSTRACTCircular RNAs (circRNAs) have been revealed to be involved in the pathology of acute ischemic stroke (AIS). Herein, we aimed to study the role and mechanism of circNCOA4 in ischemic stroke. The neuron-like cell line SK-N-SH of the experiment group was cultured in oxygen-glucose deprivation (OGD) condition. Cell viability and apoptosis were evaluated by cell counting kit-8 and flow cytometry. The oxidative damage and endoplasmic reticulum stress (ERS) were analyzed by measuring the production of reactive oxygen species (ROS), malondia...
Source: Brain Research - September 16, 2023 Category: Neurology Authors: Danyang Wang Sai Xiao Xiaoming Li Wenbo Qi Source Type: research
