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Memantine

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https://www.readbyqxmd.com/read/28737885/classics-in-chemical-neuroscience-memantine
#1
Shahrina Alam, Kaelyn Skye Lingenfelter, Aaron M Bender, Craig W Lindsley
Memantine was the first breakthrough medication for the treatment of moderate to severe Alzheimer's disease (AD) patients, and represents a fundamentally new mechanism of action (moderate-affinity, uncompetitive, voltage-dependent, N-methyl-D-aspartate (NMDA) receptor antagonist that exhibits fast on/off kinetics) to modulate glutamatergic dysfunction. Since its approval by the FDA in 2003, memantine, alone, and in combination with donepezil, has improved patient outcomes in terms of cognition, behavioral disturbances, daily functioning and delaying time to institutionalization...
July 24, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28733759/management-of-gait-changes-and-fall-risk-in-mci-and-dementia
#2
REVIEW
Gilles Allali, Joe Verghese
Gait disorders and falls are very prevalent in aging, especially in older adults with cognitive impairment: older adults with dementia are 2-3 times more likely to fall than their non-demented counterparts. The management of gait disorders and falls in older adults with mild cognitive impairment (MCI) or dementia begins by their identification with the use of specific screening tools, such as measuring gait speed, use of dual-task gait tests, or diagnosing motoric cognitive risk syndrome, a newly described pre-dementia syndrome...
September 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28730337/memantine-can-reduce-ethanol-induced-caspase-3-activity-and-apoptosis-in-h4-cells-by-decreasing-intracellular-calcium
#3
Xiaolong Wang, Jiajun Chen, Hongbo Wang, Hao Yu, Changliang Wang, Jiabin You, Pengfei Wang, Chunmei Feng, Guohui Xu, Xu Wu, Rui Zhao, Guohua Zhang
Caspase-3 activation and apoptosis are associated with various neurodegenerative disorders. Calcium activation is an important factor in promoting apoptosis. We, therefore, assessed the role of intracellular calcium in ethanol-induced activation of caspase-3 in H4 human neuroglioma cells and the protective effect of the NMDA receptor antagonist, memantine, on ethanol-induced apoptosis in H4 cells. H4 cells were treated with 100 mM EtOH (in culture medium) for 2 days. For interaction studies, cells were treated with memantine (4 μM), EDTA (1 mM), or BAPTA-AM (10 μM) before treatment with EtOH...
July 20, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28724200/effect-of-memantine-on-serum-levels-of-neuron-specific-enolase-and-on-the-glasgow-coma-scale-in-patients-with-moderate-traumatic-brain-injury
#4
Majid Mokhtari, Hossein Nayeb-Aghaei, Mehran Kouchek, Mir Mohammad Miri, Reza Goharani, Arash Amoozandeh, Sina Akhavan Salamat, Mohammad Sistanizad
Traumatic brain injury (TBI) is a major cause of disability and death globally. Despite significant progress in neuromonitoring and neuroprotection, pharmacological interventions have failed to generate favorable results. We examined the effect of memantine on serum levels of neuron-specific enolase (NSE), a marker of neuronal damage, and the Glasgow Coma Scale (GCS) in patients with moderate TBI. Patients were randomly assigned to the control group (who received standard TBI management) and the treatment group (who, alongside their standard management, received enteral memantine 30 mg twice daily for 7 days)...
July 19, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28720101/drug-candidates-in-clinical-trials-for-alzheimer-s-disease
#5
REVIEW
Shih-Ya Hung, Wen-Mei Fu
Alzheimer's disease (AD) is a major form of senile dementia, characterized by progressive memory and neuronal loss combined with cognitive impairment. AD is the most common neurodegenerative disease worldwide, affecting one-fifth of those aged over 85 years. Recent therapeutic approaches have been strongly influenced by five neuropathological hallmarks of AD: acetylcholine deficiency, glutamate excitotoxicity, extracellular deposition of amyloid-β (Aβ plague), formation of intraneuronal neurofibrillary tangles (NTFs), and neuroinflammation...
July 19, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28708400/contribution-of-mate1-to-renal-secretion-of-the-nmda-receptor-antagonist-memantine
#6
Fabian Müller, Dietmar Weitz, Volker Derdau, Martin Sandvoss, Katharina Mertsch, Jörg König, Martin F Fromm
The weak base memantine is actively secreted into urine, however the underlying mechanisms are insufficiently understood. Potential candidates involved in memantine renal secretion are organic cation transporter 2 (OCT2) and multidrug and toxin extrusion proteins (MATE1, MATE2-K). The aim of this in vitro study was the examination of the interaction of memantine with OCT2 and MATEs. Memantine transporter inhibition and transport were examined in HEK cells expressing human OCT2, MATE1, or MATE2-K. Monolayers of single- (MDCK-OCT2, MDCK-MATE1) and double-transfected MDCK cells (MDCK-OCT2-MATE1) were used for studies on vectorial, basal to apical memantine transport...
July 14, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28707481/protective-effects-of-melatonin-and-memantine-in-human-retinal-pigment-epithelium-arpe-19-cells-against-2-ethylpyridine-induced-oxidative-stress-implications-for-age-related-macular-degeneration
#7
Handan Bardak, Abdülhadi Cihangir Uğuz, Yavuz Bardak
PURPOSE: To investigate the possible protective effects of melatonin and memantine (MMT) against 2-ethylpyridine (2-EP)-induced oxidative stress and mitochondrial dysfunction in human RPE (ARPE-19) cells in vitro. MATERIALS AND METHODS: The ARPE-19 cells were divided into seven groups. Oxidative stress was triggered by incubating the ARPE-19 cells with 30 µM of 2-EP for 24 hours. Then, 200 µM of melatonin was administered over three days and 20 µM of MMT over six hours prior to the experiment...
July 14, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28706504/hypertrophic-olivary-degeneration-and-palatal-or-oculopalatal-tremor
#8
REVIEW
Caroline Tilikete, Virginie Desestret
Hypertrophic degeneration of the inferior olive is mainly observed in patients developing palatal tremor (PT) or oculopalatal tremor (OPT). This syndrome manifests as a synchronous tremor of the palate (PT) and/or eyes (OPT) that may also involve other muscles from the branchial arches. It is associated with hypertrophic inferior olivary degeneration that is characterized by enlarged and vacuolated neurons, increased number and size of astrocytes, severe fibrillary gliosis, and demyelination. It appears on MRI as an increased T2/FLAIR signal intensity and enlargement of the inferior olive...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28705297/the-diagnosis-and-treatment-of-behavioral-disorders-in-dementia
#9
Torsten Kratz
BACKGROUND: Behavioral disorders such as aggressiveness, agitation, delusions, disinhibition, affect lability, and apathy arise in more than 90% of patients with dementia. Behavioral disorders are a major challenge and the greatest stress factor in everyday life for nursing personnel and for family members caring for the patient. METHODS: This review is based on relevant publications retrieved by a selective literature search in the PubMed, Cochrane Library, and German S3 guideline databases with the search terms "behavioral disorders," "non-cognitive disorders," and "challenging behavior," in conjunction with "dementia" and "behavioral and psychological symptoms of dementia...
June 30, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28673719/newly-developed-drugs-for-alzheimer-s-disease-in-relation-to-energy-metabolism-cholinergic-and-monoaminergic-neurotransmission
#10
REVIEW
Jan Korábečný, Eugenie Nepovímová, Tereza Cikánková, Katarína Špilovská, Lucie Vašková, Eva Mezeiová, Kamil Kuča, Jana Hroudová
Current options for Alzheimer's disease (AD) treatment are based on administration of cholinesterase inhibitors (donepezil, rivastigmine, galantamine) and/or memantine, acting as an N-methyl-D-aspartate (NMDA). Therapeutic approaches vary and include novel cholinesterase inhibitors, modulators of NMDA receptors, monoamine oxidase (MAO) inhibitors, immunotherapeutics, modulators of mitochondrial permeability transition pores (mPTP), amyloid-beta binding alcohol dehydrogenase (ABAD) modulators, antioxidant agents, etc...
July 1, 2017: Neuroscience
https://www.readbyqxmd.com/read/28671413/alzheimer-disease-pharmacologic-and-nonpharmacologic-therapies-for-cognitive-and-functional-symptoms
#11
Ted Epperly, Megan A Dunay, Jack L Boice
Alzheimer disease comprises a syndrome of progressive cognitive and functional decline. Treatments should target cognitive and functional symptoms. Cholinesterase inhibitors, memantine, and a combination of a cholinesterase inhibitor and memantine have produced statistically significant but clinically small delays in various domains of cognitive and functional decline in select patients with Alzheimer disease. Vitamin E has been shown to delay functional decline in patients with mild to moderate Alzheimer disease, especially when taken in combination with a cholinesterase inhibitor...
June 15, 2017: American Family Physician
https://www.readbyqxmd.com/read/28668245/drug-eruption-caused-by-memantine
#12
Ryuichi Saito, Yu Sawada, Takashi Yamaguchi, Shun Ohmori, Sanehito Haruyama, Manabu Yoshioka, Etsuko Okada, Motonobu Nakamura
No abstract text is available yet for this article.
July 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28661262/memantine-improves-semantic-memory-in-patients-with-amnestic-mild-cognitive-impairment-a-single-photon-emission-computed-tomography-study
#13
Demet Ilhan Algin, Suna Dagli Atalay, Serhat Ozkan, Demet Ozbabalik Adapinar, Ilknur Ak Sivrioz
Objective This study was performed to assess the efficacy of memantine in patients with amnestic mild cognitive impairment (aMCI). Methods Thirty healthy controls and 45 patients diagnosed with aMCI based on the Petersen criteria were classified into 3 groups. Group 1 comprised patients who received a single memantine dose following examination (n = 25), Group 2 comprised patients who did not receive memantine treatment following examination (n = 20), and Group 3 comprised healthy age-matched volunteers (n = 30)...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28657404/new-perspective-to-develop-memantine-orally-disintegrating-tablet-formulations-sedem-expert-system
#14
Sıla Gülbağ, Duygu Yılmaz Usta, Hazal E Gültekin, Ayşe N Oktay, Özden Demirtaş, Alptuğ Karaküçük, Nevin Çelebi
Nowadays pharmaceutical industries and regulatory authorities suggest new approaches such as Quality by Design principles to reduce experiments of formulation studies, improve product quality, save cost and time. SeDeM Expert System is a predictive approach for the preformulation studies and it provides information about suitability of API for direct compression by evaluating 12 parameters. The system also allows selecting appropriate excipients by determining same parameters to improve compressibility of API...
June 28, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/28655823/can-an-fda-approved-alzheimer-s-drug-be-repurposed-for-alleviating-neuronal-symptoms-of-zika-virus
#15
Devika Sirohi, Richard J Kuhn
Zika virus caught the world by surprise by its rapid spread and frightening disease outcomes. This major epidemic motivated many scientists to focus their attention on controlling this emerging pathogen. As many as 45 vaccine candidates are being developed, but progress in the antiviral arena has been slower. In a recent article (mBio 8:e00350-17, 2017, https://doi.org/10.1128/mBio.00350-17), Costa and colleagues showed that an FDA-approved drug used to treat Alzheimer's disease may moderate Zika virus-induced neuronal damage...
June 27, 2017: MBio
https://www.readbyqxmd.com/read/28655740/diabetes-in-a-large-dementia-cohort-clinical-characteristics-and-treatment-from-the-swedish-dementia-registry
#16
Juraj Secnik, Pavla Cermakova, Seyed-Mohammad Fereshtehnejad, Pontus Dannberg, Kristina Johnell, Johan Fastbom, Bengt Winblad, Maria Eriksdotter, Dorota Religa
OBJECTIVE: We aimed to investigate the differences in clinical characteristics and pharmacological treatment associated with the presence of diabetes in a large cohort of patients with dementia. RESEARCH DESIGN AND METHODS: A cross-sectional registry-based study was conducted using data from the Swedish Dementia Registry (SveDem). Data on dementia diagnosis, dementia type, and demographic determinants were extracted from SveDem. Data from Swedish Patient Register and Prescribed Drug Register were combined for the diagnosis of diabetes...
June 27, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28646711/effect-of-memantine-on-c-reactive-protein-and-lipid-profiles-in-bipolar-disorder
#17
Hui Hua Chang, Po See Chen, Tzu-Yun Wang, Sheng-Yu Lee, Shiou-Lan Chen, San-Yuan Huang, Jau-Shyong Hong, Yen Kuang Yang, Ru-Band Lu
BACKGROUND: Balance in the immune system plays roles in bipolar disorder (BD) and its metabolic co-morbidities. Memantine is an NMDA receptor antagonist with anti-inflammatory effects. However, the effects of memantine adjunct treatment on metabolic status of BD are unclear. METHODS: During the 12 weeks period, a total of 191 BD patients were enrolled and split into valproate (VPA) + placebo and VPA + memantine (5mg/day) arms. The fasting plasma levels of high-sensitivity C-reactive protein (CRP) and metabolic indices were assessed...
October 15, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28645134/-arterial-hyper-and-hypotension-associated-with-psychiatric-medications-a-risk-assessment-based-on-the-summaries-of-product-characteristics-smpcs
#18
Roland W Freudenmann, Ninja Freudenmann, Bartosz Zurowski, Carlos Schönfeldt-Lecuona, Ludwig Maier, Roland E Schmieder, Christian Lange-Asschenfeldt, Maximilian Gahr
Introduction Psychiatric medications are well-known triggers of clinically relevant blood pressure changes. Therefore, we aimed at creating ranking lists for their risk of causing arterial hyper- or hypotension. Methods We analyzed 784 Summaries of Product characteristics (SmPCs, available online from "Rote Liste" or "Gelbe Liste" websites) from 105 psychiatric medications registered in adult psychiatry in Germany and extracted the standardized reported risks of increasing or decreasing arterial blood pressure...
June 23, 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28632848/effect-of-gabapentin-memantine-on-the-infantile-nystagmus-syndrome-in-the-zebrafish-model-implications-for-the-therapy-of-ocular-motor-diseases
#19
Stefan Yu Bögli, Maresa Afthinos, Melody Ying-Yu Huang
Purpose: Infantile nystagmus syndrome (INS) is a disorder characterized by typical horizontal eye oscillations. Due to the uncertain etiology of INS, developing specific treatments remains difficult. Single reports demonstrated, on limited measures, alleviating effects of gabapentin and memantine. In the current study, we employed the zebrafish INS model belladonna (bel) to conduct an in-depth study of how gabapentin and memantine interventions alleviate INS signs, which may further restore visual conditions in affected subjects...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28595035/n-methyl-d-aspartate-receptors-mediate-epilepsy-induced-axonal-impairment-and-tau-phosphorylation-via-activating-glycogen-synthase-kinase-3%C3%AE-and-cyclin-dependent-kinase-5
#20
Xi Liu, Shu Ou, Maojia Yin, Tao Xu, Teng Wang, Ying Liu, Xueying Ding, Xinyuan Yu, Jinxian Yuan, Hao Huang, Xiuhang Zhang, Xinjie Tan, Lifen Chen, Yangmei Chen
The mechanism of epilepsy-induced axonal impairment is poorly understood. N-methyl-D-aspartate receptors (NMDARs) play important roles in epilepsy and mediate structural and functional axonal impairment. GSK-3β and Cdk5 affect axons and are regulated by NMDARs, while their roles in epilepsy-induced axonal impairment are unclear. We demonstrated that axonal impairment is characterized by neurofilament heavy (NFH) reduction, amyloid precursor protein (APP) accumulation, and increased tau phosphorylation accompanied by a decrease of total tau in temporal lobe epilepsy (TLE) patients and pentylenetetrazol (PTZ)-kindled rats...
April 2017: Discovery Medicine
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