Journal of Arak University of Medical Sciences

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Showing 3 results for Memantine

Affectiveness of Memantine in Improvement of Cognitive Deficits in Specific Learning Disorder

Mostafa Nokani, Maryam Keypoor, Anita Alaghmand, Elham Ahmadi Zahrani,
Volume 19, Issue 9 (12-2016)

Abstract

Abstract

Background: Specific learning disorder is a neurodevelopmental disorder characterized by persistent difficulties in learning academic skills in reading, written expression, or mathematics. This study was performed to investigate the effectiveness of memantine in the relief of cognitive deficits (selective attention, sustained attention, and working memory) in specific learning disorder.

Materials and Methods: This study is a clinical trial. Of all children 8-12 years referred to Amir Kabir Hospital 94 patients diagnosed with specific learning disorder based on DSMV diagnostic interview referred by specialist and randomly divided by two groups, memantine and placebo. Cognitive deficits before and after treatment were measured with continuous performance test, Stroop test and Wechsler Digit Span forward and reverse and Corsi test.

Results: Multivariate analysis of variance showed a significant difference in error when answering, omission answer and corrected answer in continuous performance test, but this difference is not significant in response time. Difference in forward, reverse and collected auditory was significant and not significant in the auditory span. In active visual working memory at corsi cube test, difference was significant (p <0.05).

Conclusion: The results showed that memantine in improvement of sustained attention, auditory working memory and visual working memory, is effective, while in selective attention is not effective and according to similarities of learning disorder and Attention deficit / Hyperactivity disorder (ADHD) and the effectiveness of memantine in improvement of symptoms of ADHD, we can also use this drug in improvement of cognitive deficits of specific learning disorder.

Evaluation of the Efficacy of Memantine in Combination with Ritalin on the Severity of Hyperactivity and Attention Deficit Symptoms in Children

Fahimeh Omidi, Mostafa Nokani, Anita Alaghmand,
Volume 22, Issue 2 (6-2019)

Abstract

Background and Aim: Attention Deficit Hyperactivity Disorder is a common psychiatric disorder in children and paying attention to drugs that were used in this disorders are important. This study compares the efficacy of Ritalin with Memantin that is added to Ritalin on the severity of ADHD and attention deficit disorder in children.
Materials and Methods: This study is a clinical trial. All of 76 patients with diagnostic criteria for ADHD had been selected from the group of children that they were 7-12 years old, through diagnostic interviews in control & experimental groups based on DSM-V. At first, both groups filled out the Connors parent questionnaire for assessing the severity of the symptoms. Then, Ritalin was prescribed for the patients in the control group and Memantin was added to Ritalin for the patients in the experimental group for one month. The two groups again completed the questionnaire and the effectiveness of drugs was compared.
Ethical Considerations: This study with research ethics code 139510 has been approved by research ethics committee at Arak university of medical sceinces and also has been registered with code IRCT2016080829268N1 at Iranian Registry of Clinical Trials (IRCT).
Findings: According to the P-value of this test, there was no significant difference between the two groups after taking the drugs, which is equal to 0.324 and more than 0.05. But in that groups, there was a significant difference in severity of the symptoms between groups before and after taking the drugs.
Conclusion: Although the symptoms severity of hyperactivity decreased, there was no significant difference between these two groups. The Memantin added to Ritalin did not have a special effect on reducing the severity of symptoms compared to Ritalin. We can conclude the Ritalin might have had a significant effect on the symptoms reduction.

The Effects of Co-Administration of Memantine And Vitamin D on Spatial Learning and Memory Impairment in Adult Male Rats Model of Alzheimer’s Disease

Nastaran Zamani, Ahmad Ali Moazedi,
Volume 22, Issue 6 (1-2020)

Abstract

Background and Aim: Alzheimer’s disease is the most common causes of dementia among the elderly people. The aim of this study was to evaluate the synergistic effects of memantine and vitamin D on spatial learning and memory impairment in adult male rat model of Alzheimer's disease.
Methods & Materials: In this experimental study, male Wistar rats were randomly divided into nine groups (n=7): 1= Control, 2= NBM lesion (received bilateral electric lesion of NBM), 3= Sham (the electrode was entered into the NBM with no electric lesion), 4= NBM lesion+ Vehicle Memantine (received saline), 5= NBM lesion+ Vehicle Vitamin D (received saline), 6= NBM lesion+ Vehicle Memantine+ Vehicle Vitamin D (received saline plus sesame oil), 7= NBM lesion+ Vitamin D; 8= NBM lesion+Memantine, and 9= NBM lesion+Vitamin D+Memantine. After one week, the rats were trained to perform the Y-maze task for five days. Twenty five days after training, a retention test was performed to evaluate their long-term memory.
Ethical Considerations: This study with research ethics code of “EE/ 97, 24, 3061243/scu.ac.ir” was approved by the Research Ethics Committee of Shahid Chamran University of Ahvaz In Iran.
Results: Bilateral NBM lesion reduced spatial learning in comparison with control and sham groups. No effect on spatial learning was observed in NBM lesion+ Vehicle Memantine and NBM lesion+ Vehicle Vitamin D groups compared to the NBM lesion group. Spatial learning and memory in NBM lesion +Vitamin D+Memantine group (P<0.001) was significantly improved compared to NBM lesion+Vitamin D (P<0.01) and NBM lesion+Memantine (P<0.05) groups. Moreover, no significant difference was observed between the results in the 5th day of training and the memory retention at the 30th day.
Conclusion: Co-administration of memantine and vitamin D is more effective than memantine or vitamin D alone in spatial learning and memory improvement in rat model of Alzheimer's disease.

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