MK-801 and memantine act differently on short-term memory tested with different time-intervals in the Morris water maze test

2016 ◽  
Vol 311 ◽  
pp. 15-23 ◽  
Author(s):  
Weronika Duda ◽  
Malgorzata Wesierska ◽  
Pawel Ostaszewski ◽  
Karel Vales ◽  
Tereza Nekovarova ◽  
...  
Keyword(s):  
Morris Water Maze ◽  
Water Maze ◽  
Short Term Memory ◽  
Morris Water Maze Test ◽  
Short Term ◽  
Time Intervals ◽  
Term Memory ◽  
Mk 801 ◽  
Maze Test

Effects of olanzapine, sertindole and clozapine on learning and memory in the Morris water maze test in naive and MK-801-treated mice

2011 ◽  
Vol 98 (3) ◽  
pp. 398-404 ◽  
Author(s):  
Oguz Mutlu ◽  
Güner Ulak ◽  
Ipek Komsuoglu Celikyurt ◽  
Füruzan Yıldız Akar ◽  
Faruk Erden
Keyword(s):  
Learning And Memory ◽  
Morris Water Maze ◽  
Water Maze ◽  
Morris Water Maze Test ◽  
Mk 801 ◽  
Maze Test

Effects of ziprasidone, SCH23390 and SB277011 on spatial memory in the Morris water maze test in naive and MK-801 treated mice

2015 ◽  
Vol 138 ◽  
pp. 142-147 ◽  
Author(s):  
Pelin Tanyeri ◽  
Mehmet Emin Buyukokuroglu ◽  
Oguz Mutlu ◽  
Güner Ulak ◽  
Füruzan Yildiz Akar ◽  
...  
Keyword(s):  
Spatial Memory ◽  
Morris Water Maze ◽  
Water Maze ◽  
Morris Water Maze Test ◽  
Mk 801 ◽  
Maze Test

scholarly journals Independence of mechanisms for short-term and long-term memory in spatial contextual learning in the Morris water maze

2018 ◽  
pp. 147-150
Author(s):  
Е.И. Захарова ◽  
З.И. Сторожева ◽  
А.Т. Прошин ◽  
М.Ю. Монаков ◽  
А.М. Дудченко
Keyword(s):  
Morris Water Maze ◽  
Water Maze ◽  
Short Term Memory ◽  
Learning Ability ◽  
Test Time ◽  
Long Term Memory ◽  
Short Term ◽  
Term Memory ◽  
Study Results

С целью изучения механизмов взаимодействия разных форм памяти исследовали зависимость формирования долговременной памяти от краткосрочной. Методы. Крыс обучали на пространственной обстановочной модели в водном лабиринте Морриса. Сравнивали результаты тестирования (время достижения скрытой платформы) первого дня обучения (краткосрочная память) и последующих трех, первые попытки в которых отражают этапы формирования долговременной памяти. Для сравнения использовали статистический метод разделения животных по способностям к обучению на квартили. Результаты. Крысы с выраженными способностями на всех этапах обучения составили лишь небольшую часть обучавшихся особей, в то время как большинство животных проявили разные способности к формированию краткосрочной памяти и консолидации долговременной. Были выявлены крысы, у которых 1) наряду со слабыми способностями на одном или на обоих этапах обучения в первый день тренировки проявились выраженные способности к консолидации долговременной памяти в последующие дни и, наоборот, 2) проявились выраженные способности к формированию краткосрочной памяти, а консолидация памяти оказалась нарушенной. Выводы. Полученные данные наглядно свидетельствуют о независимости механизмов краткосрочной и долговременной памяти. Aim. The dependence of long-term memory formation on short-term memory was studied to evaluate mechanisms for interaction of different memory forms. Methods. Rats were trained in the Morris water maze using the spatial contextual model of learning. We compared results of the test (time to reaching the hidden platform) on the first training day (short-term memory) and the first attempts on the next three days, which reflected stages in the consolidation of long-term memory. The comparison was performed using a statistical method of splitting animals into quartiles based on their learning ability. Results. The rats showing a good learning ability at all stages of training constituted only a small part of the trained animals while most animals showed different abilities to formation of short-term memory and consolidation of long-term memory. The rats were identified, which 1) although showed weak abilities at one or both stages of the first-day training showed good abilities to consolidate the long-term memory on the next days and, on the contrary, 2) showed good abilities to form the short-term memory while the memory consolidation was impaired. Conclusions. The study results clearly indicated a lack of dependence between mechanisms of short-term and long-term memory.

scholarly journals Acute pre-operative ibuprofen improves cognition in a rat model for postoperative cognitive dysfunction

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Klaske Oberman ◽  
Iris Hovens ◽  
Jacco de Haan ◽  
Joana Falcao-Salles ◽  
Barbara van Leeuwen ◽  
...  
Keyword(s):  
Cognitive Dysfunction ◽  
Morris Water Maze ◽  
Rat Model ◽  
Gut Microbiome ◽  
Water Maze ◽  
Single Injection ◽  
Postoperative Cognitive Dysfunction ◽  
Aged Rats ◽  
Short Term ◽  
Term Memory

Abstract Background Inflammation is considered a key factor in the development of postoperative cognitive dysfunction (POCD). Therefore, we hypothesized that pre-operative anti-inflammatory treatment with ibuprofen would inhibit POCD in our rat-model. Methods Male Wistar rats of 3 or 23 months old received a single injection of ibuprofen (15 mg/kg i.p.) or were control handled before abdominal surgery. Timed blood and fecal samples were collected for analyses of inflammation markers and gut microbiome changes. Behavioral testing was performed from 9 to 14 days after surgery, in the open field, novel object- and novel location-recognition tests and Morris water maze. Neuroinflammation and neurogenesis were assessed by immune histochemistry after sacrifice on postoperative day 14. Results Ibuprofen improved short-term spatial memory in the novel location recognition test, and increased hippocampal neurogenesis. However, these effects were associated with increased hippocampal microglia activity. Whereas plasma cytokine levels (IL1-β, IL6, IL10, and TNFα) were not significantly affected, VEGF levels increased and IFABP levels decreased after ibuprofen. Long-term memory in the Morris water maze was not significantly improved by ibuprofen. The gut microbiome was neither significantly affected by surgery nor by ibuprofen treatment. In general, effects in aged rats appeared similar to those in young rats, though less pronounced. Conclusion A single injection of ibuprofen before surgery improved hippocampus-associated short-term memory after surgery and increased neurogenesis. However, this favorable outcome seemed not attributable to inhibition of (neuro)inflammation. Potential contributions of intestinal and blood-brain barrier integrity need further investigation. Although less pronounced compared to young rats, effects in aged rats indicate that even elderly individuals could benefit from ibuprofen treatment.

scholarly journals Musical Electroacupuncture May Be a Better Choice than Electroacupuncture in a Mouse Model of Alzheimer’s Disease

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Jing Jiang ◽  
Gang Liu ◽  
Suhua Shi ◽  
Zhigang Li
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Mouse Model ◽  
Frontal Lobe ◽  
Morris Water Maze ◽  
Water Maze ◽  
Morris Water Maze Test ◽  
Maze Test ◽  
Model Of Alzheimer’S Disease ◽  
Samp8 Mice

Objectives. To compare musical electroacupuncture and electroacupuncture in a mouse model of Alzheimer’s disease.Methods. In this study, 7.5-month-old male senescence-accelerated mouse prone 8 (SAMP8) mice were used as an Alzheimer’s disease animal model. In the normal control paradigm, 7.5-month-old male SAMR1 mice were used as the blank control group (N group). After 15 days of treatment, using Morris water maze test, micro-PET, and immunohistochemistry, the differences among the musical electroacupuncture (MEA), electroacupuncture (EA), Alzheimer’s disease (AD), and normal (N) groups were assessed.Results. The Morris water maze test, micro-PET, and immunohistochemistry revealed that MEA and EA therapies could improve spatial learning and memory ability, glucose metabolism level in the brain, and Aβamyloid content in the frontal lobe, compared with the AD group (P<0.05). Moreover, MEA therapy performed better than EA treatment in decreasing amyloid-beta levels in the frontal lobe of mice with AD.Conclusion. MEA therapy may be superior to EA in treating Alzheimer’s disease as demonstrated in SAMP8 mice.

Protective Effects of Dendrobium nobile Lindl. Alkaloids on Alzheimer's Disease-like Symptoms Induced by High-methionine Diet

2021 ◽  
Vol 19 ◽  
Author(s):  
Tingting Pi ◽  
Guangping Lang ◽  
Bo Liu ◽  
Jingshan Shi
Keyword(s):  
Alzheimer’S Disease ◽  
Learning And Memory ◽  
Morris Water Maze ◽  
Water Maze ◽  
Cpg Island ◽  
Morris Water Maze Test ◽  
Dendrobium Nobile ◽  
Maze Test ◽  
Neuron Damage ◽  
Cpg Island Methylation

Background: High methionine-diet (HMD) causes Alzheimer's disease (AD)-like symptoms. Previous studies have shown that Dendrobium nobile Lindle. alkaloids (DNLA) had potential benefits for AD. Object: Whether DNLA can improve AD-like symptoms induced by HMD is to be explored. Method: Mice were fed with 2% HMD diet for 11 weeks, the DNLA20 control group (20 mg/kg), DNLA10 group (10 mg/kg), and DNLA20 group (20 mg/kg) were administrated with DNLA for 3 months. Morris water maze test was used to detect learning and memory ability. Neuron damage was evaluated by HE and Nissl stainings. Levels of homocysteine (Hcy), beta-amyloid 1-42 (Aβ1-42), S-adenosine methionine (SAM), and S-adenosine homocysteine (SAH) were detected by ELISA. Immunofluorescence and western blotting (WB) were used to determine the expression of proteins. CPG island methylation. Results: Morris water maze test revealed that DNLA improved learning and memory dysfunction. HE, Nissl, and immunofluorescence stainings showed that DNLA alleviated neuron damage and reduced the 5-methylcytosine (5-mC), Aβ1-40, and Aβ1-42 levels. DNLA also decreased the levels of Hcy and Aβ1-42 in the serum, along with decreased SAM/SAH levels in the liver tissue. WB results showed that DNLA down-regulated the expression of the amyloid-precursor protein (APP), presenilin-1 (PS1), beta-secretase-1 (BACE1), DNA methyltransferase1 (DNMT1), Aβ1-40, and Aβ1-42 proteins. DNLA also up-regulated the expression of the protein of insulin-degrading enzyme (IDE), neprilysin (NEP), DNMT3a, and DNMT3b. Meanwhile, DNLA increased CPG island methylation levels of APP and BACE1 genes. Conclusions: DNLA alleviated AD-like symptoms induced by HMD via the DNA methylation pathway.

Soybean Isoflavones Influences Learning and Memory and Caspase-3 Levels in the Hippocampus of Rats after MWM Test

2013 ◽  
Vol 411-414 ◽  
pp. 3178-3180
Author(s):  
Li Hai Jin ◽  
Xing Yu Zhao ◽  
Wei Zhang ◽  
Wei Chen ◽  
Guo Qing Sun ◽  
...  
Keyword(s):  
Learning And Memory ◽  
Morris Water Maze ◽  
Water Maze ◽  
Memory Impairment ◽  
Caspase 3 ◽  
Morris Water Maze Test ◽  
Once Daily ◽  
Soybean Isoflavones ◽  
Maze Test ◽  
Intermediate Dose

We assessed the effectiveness and mechanism of action of Soybean Isoflavones on learning and memory and Caspase-3 levels in the hippocampus of rats after Morris water maze (MWM test). Soybean Isoflavones (200,400 or 800 mg/kg/d) were administered by intragavage once daily for 14 consecutive days. The Morris water maze test was used to evaluate the ability of Soybean Isoflavones to increase learning and memory impairment. The levels of Caspase-3 in hippocampus of rats were detected by Westernblot after MWM test. Compared to untreated controls (P<0.01), MWM could be prolonged after Soybean Isoflavones treatment (P<0.05 for="" low="" and="" intermediate="" dose="" groups="" westernblot="" analysis="" showed="" that="" the="" protein="" expression="" of="" caspase-3="" was="" decreased="" in="" different="" concentration="" soybean="" isoflavones="" i="">P<0.05 and="" i="">P<0.01, respectively). The results suggest that Soybean Isoflavones is effective in improving the learning and memory in rats , the mechanism of which may be related Caspase ways.

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