scholarly journals A Terrified Sound Stress Impairs Learning And Memory Ability of Adult Female

2021 ◽  
Author(s):  
Shanfeng Gao ◽  
Lingyu Zhang ◽  
Xia Wang ◽  
Lin Han ◽  
Xuan Xiao ◽  
...  
Keyword(s):  
Mental Health ◽  
Learning And Memory ◽  
Adult Female ◽  
Spatial Learning ◽  
Sucrose Preference ◽  
Control Group ◽  
Stress Group ◽  
Memory Ability ◽  
Female Mice ◽  
Effects Of Stress

Abstract Stress, as an important environmental factor of mental health, cannot be ignored. The great physiological difference between males and females implies that the effects of stress may differ by gender. However, few studies have focused on the effects of stress on females. This study investigated the effects of a terrified sound stress on adult female mice.Methods: 32 adults female C57BL/6 mice were randomly divided into control group (n=16) and stress group (n=16). Sucrose preference test and open field test (OFT) were carried out to evaluate the anxiety and depression of mice. Spatial learning and memory ability were measured by Morris Water maze test (MWM). Endocrine hormones were determined by enzyme-linked immunosorbent assay (ELISA). Serum differential proteins were screened by mass spectrometry (MS). Results: Compared with control group, the sucrose preference of stress group was decreased; in MWM, the escape latency of the stress group was significantly prolonged (P<0.05), and the total swimming distance was significantly increased (P<0.05).Serum T (P<0.05), GnRH (P<0.05), FSH and LH levels decreased; thirty six differential peaks were found by MS, eight of them had high multiples of difference (> 1.2 or <0.8). Conclusion: terrified sound stress impairs spatial learning ability and mental health of adult female mice.

scholarly journals Caspase-1/IL-1β represses membrane transport of GluA1 by inhibiting the interaction between Stargazin and GluA1 in Alzheimer’s disease

2021 ◽  
Vol 27 (1) ◽  
Author(s):  
Xunhu Gu ◽  
Hanjun Wu ◽  
Yuqin Xie ◽  
Lijun Xu ◽  
Xu Liu ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Membrane Transport ◽  
Learning And Memory ◽  
Spatial Learning ◽  
Senile Plaque ◽  
Spatial Learning And Memory ◽  
Memory Ability ◽  
Caspase 1 ◽  
Plaque Deposition

Abstract Background Alzheimer's disease is a neurodegenerative disease. Previous study has reported that caspase-1/IL-1β is closely associated with Alzheimer's disease. However, the biological role of caspase-1/IL-1β in Alzheimer's disease has not been fully elucidated. This study aimed to explore the mechanism of action of caspase-1/IL-1β in Alzheimer's disease. Methods Mouse hippocampal neurones were treated with Aβ1-42 to induce Alzheimer's disease cell model. APP/PS1 mice and Aβ1-42-induced hippocampal neurones were treated with AC-YVAD-CMK (caspase-1 inhibitor). Spatial learning and memory ability of mice were detected by morris water maze. Flow cytometry, TUNEL staining, Thioflavin S staining and immunohistochemistry were performed to examine apoptosis and senile plaque deposition. Enzyme linked immunosorbent assay and western blot were performed to assess the levels of protein or cytokines. Co-Immunoprecipitation was performed to verify the interaction between Stargazin and GluA1. Results AC-YVAD-CMK treatment improved spatial learning and memory ability and reduced senile plaque deposition of APP/PS1 mice. Moreover, AC-YVAD-CMK promoted membrane transport of GluA1 in APP/PS1 mice. In vitro, Aβ1-42-induced hippocampal neurones exhibited an increase in apoptosis and a decrease in the membrane transport of GluA1, which was abolished by AC-YVAD-CMK treatment. In addition, Stargazin interacted with GluA1, which was repressed by caspase-1. Caspase-1/IL-1β inhibited membrane transport of GluA1 by inhibiting the interaction between Stargazin and GluA1. Conclusions Our data demonstrate that caspase-1/IL-1β represses membrane transport of GluA1 by inhibiting the interaction between Stargazin in Alzheimer's disease. Thus, caspase-1/IL-1β may be a target for Alzheimer's disease treatment.

scholarly journals Fluoxetine exposure in adolescent and adult female mice decreases cocaine and sucrose preference later in life

2018 ◽  
Vol 33 (1) ◽  
pp. 145-153 ◽  
Author(s):  
Francisco J Flores-Ramirez ◽  
Israel Garcia-Carachure ◽  
David O Sanchez ◽  
Celene Gonzalez ◽  
Samuel A Castillo ◽  
...  
Keyword(s):  
Drinking Water ◽  
Conditioned Place Preference ◽  
Early Development ◽  
Adult Female ◽  
Model System ◽  
Psychotropic Medications ◽  
Sucrose Preference ◽  
Female Mice ◽  
Male Subjects ◽  
Conditioned Place Preference Paradigm

Background: Preclinical evidence from male subjects indicates that exposure to psychotropic medications, during early development, results in long-lasting altered responses to reward-related stimuli. However, it is not known if exposure to the antidepressant fluoxetine, in female subjects specifically, changes sensitivity to natural and drug rewards, later in life. Aims: The aim of this work was to investigate if exposure to fluoxetine mediates enduring changes in sensitivity to the rewarding properties of cocaine and sucrose, using female mice as a model system. Methods: We exposed C57BL/6 female mice to fluoxetine (250 mg/L in their drinking water) for 15 consecutive days, either during adolescence (postnatal day 35–49) or adulthood (postnatal day 70–84). Twenty-one days later, mice were examined on their behavioral reactivity to cocaine (0, 2.5, 5, 7.5 mg/kg) using the conditioned place preference paradigm, or assessed on the two-bottle sucrose (1%) test. Results: We found that regardless of age of antidepressant exposure, female mice pre-exposed to fluoxetine displayed reliable conditioning to the cocaine-paired compartment. However, when compared to respective age-matched controls, antidepressant pre-exposure decreased the magnitude of conditioning at the 5 and 7.5 mg/kg cocaine doses. Furthermore, fluoxetine pre-exposure reduced sucrose preference without altering total liquid intake. Conclusions: The data suggest that pre-exposure to fluoxetine, during adolescence or adulthood, results in a prolonged decrease in sensitivity to the rewarding properties of both natural and drug rewards in female C57BL/6 mice.

The effects of soy on scopolamine-induced spatial learning and memory impairments are comparable to the effects of estradiol

2019 ◽  
Vol 39 (3) ◽  
Author(s):  
Narges Marefati ◽  
Amin Mokhtari-Zaer ◽  
Farimah Beheshti ◽  
Sareh Karimi ◽  
Zahra Mahdian ◽  
...  
Keyword(s):  
Learning And Memory ◽  
Spatial Learning ◽  
Serum Levels ◽  
Ovariectomized Rats ◽  
Control Group ◽  
Spatial Learning And Memory ◽  
Protective Effects ◽  
Memory Impairments ◽  
The Central Nervous System ◽  
Higher Doses

Abstract Background Modulatory effects of soy extract and estradiol on the central nervous system (CNS) have been reported. The effect of soy on scopolamine-induced spatial learning and memory in comparison to the effect of estradiol was investigated. Materials and methods Ovariectomized rats were divided into the following groups: (1) control, (2) scopolamine (Sco), (3) scopolamine-soy 20 (Sco-S 20), (4) scopolamine-soy 60 (Sco-S 60), (5) scopolamine-estradiol 20 (Sco-E 20) and (6) scopolamine-estradiol 60 (Sco-E 60). Soy extract, estradiol and vehicle were administered daily for 6 weeks before training in the Morris water maze (MWM) test. Scopolamine (2 mg/kg) was injected 30 min before training in the MWM test. Results In the MWM, the escape latency and traveled path to find the platform in the Sco group was prolonged compared to the control group (p < 0.001). Treatment by higher doses of soy improved performances of the rats in the MWM (p < 0.05 – p < 0.001). However, treatment with both doses of estradiol (20 and 60 μg/kg) resulted in a statistically significant improvement in the MWM (p < 0.01 – p < 0.001). Cortical, hippocampal and serum levels of malondialdehyde (MDA), as an index of lipid peroxidation, were increased which was prevented by soy extract and estradiol (p < 0.001). Cortical, hippocampal as well as serum levels of the total thiol, superoxide dismutase (SOD) and catalase (CAT) in Sco group were lower than the control group (p < 0.001) while they were enhanced when the animals were treated by soy extract and estradiol (p < 0.01 – p < 0.001). Conclusions It was observed that both soy extract and estradiol prevented learning and memory impairments induced by scopolamine in ovariectomized rats. These effects can be attributed to their protective effects on oxidative damage of the brain tissue.

Change of learning and memory ability and IGF-1 level in type 3 diabetes rats and effect of analog P165 of APP 5-mer peptide

2011 ◽  
Vol 26 (S2) ◽  
pp. 503-503
Author(s):  
R. Wang
Keyword(s):  
Learning And Memory ◽  
Escape Latency ◽  
Serum Glucose ◽  
Morris Water Maze Test ◽  
Control Group ◽  
Model Group ◽  
Memory Ability ◽  
Type 3 Diabetes ◽  
Significant Difference ◽  
Type 3

ObjectiveTo investigate the effect of Analog P165 of APP5-mer peptide on change of learning and memory ability in type 3 diabetes rats.MethodHealthy adult male rats were randomly divided into 3 groups: Control group; type 3 diabetes (T3DM) group; T3DM administrated P165 group. T3DM models were induced by intracerebroventricular injection of Streptozotocin (STZ, 3 mg/kg) bilaterally. P165 groups were treated with gastric P165 (355 μg/kg) Then, learning and memory ability was detected by Morris water maze test. Body weight and serum glucose were recorded. The rat serum Insulin, Gluocagon, insulin-like growth factor-1 (IFG-1) was detected by ELISA method.ResultsIn the Morris water maze test, compared with control group, the escape latency increased significantly (p < 0.05) in model group at the 3rd day. Compared with model group, the escape latency decreased significantly (p < 0.05) in the models administrated P165 group at the 3rd day. Although there was no significant difference, the escape latency decreased in P165 group at the 4th and 5th day. From the result of rats blood serum detection, the serum IGF-1 level decreased significantly in the model group (p < 0.01) than the control group. The serum IGF-1 level increased significantly in P165 treated group(p < 0.05).The body weight and the serum glucose, insulin, gluocagon had no significant difference among the groups in the period of experiment.ConclusionThere is learning and memory impairment in the T3DM rats. P165 can raise the rats blood serum IGF-1 level, ameliorate learning and memory ability but don’t influence the serum glucose.

scholarly journals Manual Acupuncture Suppresses the Expression of Proinflammatory Proteins Associated with the NLRP3 Inflammasome in the Hippocampus of SAMP8 Mice

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Ning Ding ◽  
Jing Jiang ◽  
Menghan Lu ◽  
Jiatong Hu ◽  
Yiyuan Xu ◽  
...  
Keyword(s):  
Learning And Memory ◽  
Spatial Learning ◽  
Nlrp3 Inflammasome ◽  
Control Group ◽  
Spatial Learning And Memory ◽  
Manual Acupuncture ◽  
Caspase 1 ◽  
Donepezil Hydrochloride ◽  
Related Proteins ◽  
Samp8 Mice

Objective. To investigate the effect of manual acupuncture (MA) on NLRP3 inflammasome-related proteins. Methods. SAMP8 mice were randomly divided into Alzheimer’s disease (AD) group, the MA group, and the medicine (M) group. Mice in the M group were treated with donepezil hydrochloride at 0.65 μg/g. In the MA group, MA was applied on Baihui (GV20) and Yintang (GV29) for 20 min and then pricked at Shuigou (GV26). The Morris water maze was applied to assess spatial learning and memory. Immunohistochemical staining and western blot analysis were used to observe the expression of NLRP3 inflammasome-related proteins. Results. Compared with the normal (N) control group, spatial learning and the memory capabilities of the AD group significantly decreased (p<0.01). The number of NLRP3, ASC, Caspase-1, and IL-1β positively stained cells in the AD group was higher than the N group, and the relative expression levels of the above proteins were significantly higher than those in the N group (p<0.01). These changes were reversed by both MA and donepezil (p<0.01). Conclusion. MA can improve the learning and memory capabilities of SAMP8 mice. The negative regulation of the NLRP3/Caspase-1 pathway in the hippocampus may be a possible mechanism of MA in the treatment of AD.

scholarly journals Exendin-4 antagonizes Aβ1-42-induced attenuation of spatial learning and memory ability

2016 ◽  
Vol 12 (5) ◽  
pp. 2885-2892 ◽  
Author(s):  
Xiaohui Wang ◽  
Li Wang ◽  
Ruirui Jiang ◽  
Yunyun Xu ◽  
Xueling Zhao ◽  
...  
Keyword(s):  
Learning And Memory ◽  
Spatial Learning ◽  
Spatial Learning And Memory ◽  
Memory Ability

scholarly journals Protective effect of fennel, and its major component trans-anethole against social isolation induced behavioral deficits in rats

2020 ◽  
Vol 107 (1) ◽  
pp. 30-39 ◽  
Author(s):  
S. Raman ◽  
M. Asle-Rousta ◽  
M. Rahnema
Keyword(s):  
Learning And Memory ◽  
Social Isolation ◽  
Spatial Learning ◽  
Male Rats ◽  
Anxiety And Depression ◽  
Control Group ◽  
Spatial Learning And Memory ◽  
Foeniculum Vulgare ◽  
Behavioral Deficits ◽  
Swimming Test

AbstractSocial isolation damages the nervous system by weakening the antioxidant system and leading to behavioral disorders. Fennel (Foeniculum vulgare Mill.) is an herbal plant that has antioxidant and neuroprotective properties. The objective of this study was to evaluate the effect of fennel methanol extract and its major component trans-anethole on spatial learning and memory, anxiety and depression in male rats exposed to social isolation stress.Rats were divided into six groups of Control (C), Fennel (F), trans-Anethole (A), Isolation, Isolation-F and Isolation-A. The rats were kept in the cage alone for 30 days to induce isolation. Fennel extract (150 mg/kg) and trans-anethole (80 mg/kg) were also gavaged during this period. At the end of the course, spatial learning and memory, anxiety and depression were measured by Morris water maze (MWM), elevated plus maze (EPM) and forced swimming test (FST), respectively.Learning and memory were impaired in isolated rats. Swimming time and distance to reach the hidden platform in these animals increased compared with controls (P < 0.05). In the EPM test, the percentage of open arm entries and open arm time also decreased significantly in the Isolation group (P < 0.01). The immobilization time in FST also increased significantly in these animals compared with the Control group (P < 0.001). Fennel and trans-anethole were both able to eliminate these changes in isolated rats.It is concluded that fennel and its major component, trans-anethole are suitable candidates for the prevention and treatment of stress-induced neurological disorders.

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