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https://www.readbyqxmd.com/read/29104731/edible-bird-s-nest-prevents-menopause-related-memory-and-cognitive-decline-in-rats-via-increased-hippocampal-sirtuin-1-expression
#1
Zhiping Hou, Peiyuan He, Mustapha Umar Imam, Jiemen Qi, Shiying Tang, Chengjun Song, Maznah Ismail
Menopause causes cognitive and memory dysfunction due to impaired neuronal plasticity in the hippocampus. Sirtuin-1 (SIRT1) downregulation in the hippocampus is implicated in the underlying molecular mechanism. Edible bird's nest (EBN) is traditionally used to improve general wellbeing, and in this study, we evaluated its effects on SIRT1 expression in the hippocampus and implications on ovariectomy-induced memory and cognitive decline in rats. Ovariectomized female Sprague-Dawley rats were fed with normal pellet alone or normal pellet + EBN (6, 3, or 1...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29091891/hispidulin-prevents-sevoflurane-induced-memory-dysfunction-in-aged-rats
#2
Lubin Huang, Kejing Huang, Hong Ning
AIM: As a widely used general anesthetic, sevoflurane has been found to induce cognitive and memory defectsin the elderly. This may increase the risk of Alzheimer's disease. This study explores the neuroprotective effect of hispidulin, a natural flavone compound, against sevoflurane-induced memory dysfunction. METHODS: The effect of sevoflurane exposure on memory function was evaluated by novel object recognition and Y-maze testing using an aged rat model. The apoptotic cell death in the hippocampus of rats was assessed using a TUNEL assay...
October 27, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29090690/tip-enhanced-raman-spectroscopy-of-amyloid-%C3%AE-at-neuronal-spines
#3
Mohammadali Tabatabaei, Fabiana A Caetano, Farshid Pashee, Stephen S G Ferguson, François Lagugné-Labarthet
The early stages of Alzheimer's disease pathogenesis are thought to occur at the synapse level, since synapse loss can be directly correlated with memory dysfunction. Considerable evidence has suggested that amyloid beta (Aβ), a secreted proteolytic derivative of amyloid precursor protein, appears to be a critical factor in the early 'synaptic failure' that is observed in Alzheimer's disease pathogenesis. The identification of Aβ at neuronal spines with high spatial resolution and high surface specificity would facilitate unraveling the intricate effect of Aβ on synapse loss and its effect on neighboring neuronal connections...
November 1, 2017: Analyst
https://www.readbyqxmd.com/read/29072169/amnestic-dementia-impairment-in-parkinson-s-disease-the%C3%A2-role-of-body-composition-ageing-and-insulin-resistance
#4
Arthur Oscar Schelp, Cristiane Lara Mendes-Chiloff, Vanessa Cristina Paduan, José Eduardo Corrente, Aline Vieira, Juliana Cristine Nunes Marchette, Juli Thomaz de Souza, Gustavo José Luvizuto, Célia Regina Nogueira, Rodrigo Bazan
BACKGROUND: The risk of cognitive impairment associated with Parkinson's disease (PD) is related to ageing. The role of body compartmentalization and associated metabolic dysfunctions, as a risk factor for dementia in PD is still not clear. OBJECTIVE: To investigate body mass distribution, insulin resistance, and other parameters in patients without dementia, and those with dementia classified as compromised delayed memory. SUBJECTS AND METHODS: We recorded body composition, basal levels of insulin resistance, and other data from 135 patients, who were followed for at least two years...
August 2017: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/29064406/diosgenin-rich-yam-extract-enhances-cognitive-function-a-placebo-controlled-randomized-double-blind-crossover-study-of-healthy-adults
#5
Chihiro Tohda, Ximeng Yang, Mie Matsui, Yuna Inada, Emika Kadomoto, Shotaro Nakada, Hidetoshi Watari, Naotoshi Shibahara
Diosgenin, a yam-derived compound, was found to facilitate the repair of axonal atrophy and synaptic degeneration and improve memory dysfunction in a transgenic mouse model of Alzheimer's disease (AD). It was also found to enhance neuronal excitation and memory function even in normal mice. We hypothesized that diosgenin, either isolated or in an extract, may represent a new category of cognitive enhancers with essential activities that morphologically and functionally reinforce neuronal networks. This study aimed to investigate the effects of a diosgenin-rich yam extract on cognitive enhancement in healthy volunteers...
October 24, 2017: Nutrients
https://www.readbyqxmd.com/read/28984584/perception-and-reality-of-cognitive-function-information-processing-speed-perceived-memory-function-and-perceived-task-difficulty-in-older-adults
#6
Anna Torrens-Burton, Nasreen Basoudan, Antony J Bayer, Andrea Tales
This study examines the relationships between two measures of information processing speed associated with executive function (Trail Making Test and a computer-based visual search test), the perceived difficulty of the tasks, and perceived memory function (measured by the Memory Functioning Questionnaire) in older adults (aged 50+ y) with normal general health, cognition (Montreal Cognitive Assessment score of 26+), and mood. The participants were recruited from the community rather than through clinical services, and none had ever sought or received help from a health professional for a memory complaint or mental health problem...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28979205/atrophy-of-the-posterior-subiculum-is-associated-with-memory-impairment-tau-and-a%C3%AE-pathology-in-non-demented-individuals
#7
Olof Lindberg, Gustav Mårtensson, Erik Stomrud, Sebastian Palmqvist, Lars-Olof Wahlund, Eric Westman, Oskar Hansson
Alzheimer's disease (AD) is associated with atrophy of the cornu ammonis (CA) 1 and the subiculum subfield of the hippocampus (HC), and with deficits in episodic memory and spatial orientation. These deficits are mainly associated with the functionality of the posterior HC. We therefore hypothesized that key AD pathologies, i.e., β-amyloid and tau pathology would be particularly associated with the volume of the posterior subiculum in non-demented individuals. In our study we included 302 cognitively normal elderly participants (CN), 183 patients with subjective cognitive decline (SCD) and 171 patients with amnestic mild cognitive impairment (MCI), all of whom underwent 3T magnetic resonance images (MRI)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28968237/prediction-model-of-conversion-to-dementia-risk-in-subjects-with-amnestic-mild-cognitive-impairment-a-longitudinal-multi-center-clinic-based-study
#8
Hyemin Jang, Byoung Seok Ye, Sookyoung Woo, Sun Woo Kim, Juhee Chin, Seong Hye Choi, Jee Hyang Jeong, Soo Jin Yoon, Bora Yoon, Kyung Won Park, Yun Jeong Hong, Hee Jin Kim, Samuel N Lockhart, Duk L Na, Sang Won Seo
BACKGROUND: Patients with amnestic mild cognitive impairment (aMCI) have an increased risk of dementia. However, conversion rate varies. Therefore, predicting the dementia conversion in these patients is important. OBJECTIVE: We aimed to develop a nomogram to predict dementia conversion in aMCI subjects using neuropsychological profiles. METHODS: A total of 338 aMCI patients from two hospital-based cohorts were used in analysis. All patients were classified into 1) verbal, visual, or both, 2) early or late, and 3) single or multiple-domain aMCI according to the modality, severity of memory dysfunction, and multiplicity of involved cognitive domains, respectively...
September 29, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28963462/suppression-of-adiponectin-receptor-1-promotes-memory-dysfunction-and-alzheimer-s-disease-like-pathologies
#9
Min Woo Kim, Noman Bin Abid, Myeong Hoon Jo, Min Gi Jo, Gwang Ho Yoon, Myeong Ok Kim
Recent studies on neurodegeneration have focused on dysfunction of CNS energy metabolism as well as proteinopathies. Adiponectin (ADPN), an adipocyte-derived hormone, plays a major role in the regulation of insulin sensitivity and glucose homeostasis in peripheral organs via adiponectin receptors. In spite of accumulating evidence that adiponectin has neuroprotective properties, the underlying role of adiponectin receptors has not been illuminated. Here, using gene therapy-mediated suppression with shRNA, we found that adiponectin receptor 1 (AdipoR1) suppression induces neurodegeneration as well as metabolic dysfunction...
September 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28962104/altered-functional-connectivity-in-patients-with-post-stroke-memory-impairment-a-resting-fmri-study
#10
Jiao Liu, Qin Wang, Feiwen Liu, Haiyan Song, Xiaofeng Liang, Zhengkun Lin, Wenjun Hong, Shanli Yang, Jia Huang, Guohua Zheng, Jing Tao, Li-Dian Chen
Post-stroke memory dysfunction (PMD) is one of the most common forms of cognitive impairment among stroke survivors. However, only a limited number of studies have directly investigated the neural mechanisms associated with memory decline. The aim of the present study was to identify dynamic changes in the functional organization of the default mode network (DMN) and the dorsal attention network of patients with PMD. A total of 27 patients with PMD who experienced a stroke in the right hemisphere were enrolled in the current study, along with 27 healthy control subjects matched by age, sex, and educational level...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28901374/ferulic-acid-exerts-neuroprotective-effects-against-cerebral-ischemia-reperfusion-induced-injury-via-antioxidant-and-anti-apoptotic-mechanisms-in%C3%A2-vitro-and-in%C3%A2-vivo
#11
Zhongkun Ren, Rongping Zhang, Yuanyuan Li, Yu Li, Zhiyong Yang, Hui Yang
Ferulic acid (FA) is a derivative of cinnamic acid. It is used in the treatment of heart head blood-vessel disease and exerts protective effects against hypoxia/ischemia-induced cell injury in the brain. This study investigated the potential neuroprotective effects of FA against ischemia/reperfusion (I/R)-induced brain injury in vivo and in vitro through hematoxylin and eosin (H&E) and Nissl staining assays, flow cytometry, Hoechst 33258 staining, quantitative PCR, western blot analysis and fluorescence microscopic analysis...
November 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28894175/sexual-congruency-in-the-connectome-and-translatome-of-vta-dopamine-neurons
#12
Amanda S Chung, Samara M Miller, Yanjun Sun, Xiangmin Xu, Larry S Zweifel
The ventral tegmental area (VTA) dopamine system is important for reward, motivation, emotion, learning, and memory. Dysfunctions in the dopamine system are linked to multiple neurological and neuropsychiatric disorders, many of which present with sex differences. Little is known about the extent of heterogeneity in the basic organization of VTA dopamine neurons with regard to sex. Here, we characterized the cell-specific connectivity of VTA dopamine neurons, their mRNA translational profile, and basic electrophysiological characteristics in a common strain of mice...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28888031/disconnection-of-hippocampal-networks-contributes-to-memory-dysfunction-in-individuals-with-temporal-lobe-epilepsy
#13
Travis R Stoub, Ada V Chicharro, Christopher L Grote, Andres M Kanner
A deficit in declarative memory function is common among individuals with temporal lobe epilepsy. The purpose of this study is to evaluate the relationship between the volume of the hippocampus, entorhinal cortex along with the surrounding parahippocampal white matter and memory performance in those with temporal lobe epilepsy. T1 weighted MRI scans were acquired using a 3-D pulse sequence in 50 individuals with temporal lobe epilepsy. Hippocampal and entorhinal cortex volumes were derived by manually tracing consecutive coronal slices aligned perpendicular to the long axis of the hippocampus...
September 9, 2017: Hippocampus
https://www.readbyqxmd.com/read/28875975/-autobiographical-memory-in-depressive-disorders
#14
REVIEW
Paulina Żuchowicz, Justyna Jasionowska, Piotr Gałecki, Monika Talarowska
Contemporary research studies regarding autobiographical memory (AM) indicate that its deficits have a significant impact on the development of mental disorders. We find particularly many reports regarding the comorbidity of AM deficits and depressive disorders. The characteristic feature of AM in the people suffering from depressive disorders is the presence of overgeneral autobiographical memory (OGM), i.e. the reminiscences which contain a summary of many emotion-laden situations, yet without significant detail...
August 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28846969/effects-of-maternal-exposure-to-bisphenol-af-on-emotional-behaviors-in-adolescent-mice-offspring
#15
Miao Gong, Ziqing Huai, Han Song, Lingyu Cui, Qingjun Guo, Juan Shao, Yuan Gao, Haishui Shi
Exposure to bisphenol A (BPA), one kind of environmental endocrine disruptors (EEDs), exerted significantly detrimental effects on neuro-endocrinological system and related disorders, such as memory dysfunction and depression. Bisphenol AF (BPAF),a newly introduced chemical structurally related to BPA, is used extensively. BPAF has stronger estrogenic activities than BPA. However, the potential neurotoxicological effects of BPAF are still elusive. The present study aimed to investigate the potential effects of maternal BPAF exposure during pregnancy on emotional behaviors of adolescent mice offspring...
August 25, 2017: Chemosphere
https://www.readbyqxmd.com/read/28837785/canagliflozin-prevents-scopolamine-induced-memory-impairment-in-rats-comparison-with-galantamine-hydrobromide-action
#16
COMPARATIVE STUDY
Nadia M S Arafa, Elham H A Ali, Mohamed Kamel Hassan
Canagliflozin (CAN) is a sodium-glucose co-transporter 2 (SGLT2) inhibitor indicated to improve glycemic control in adults with type 2 diabetes mellitus. There is a little information about its effect on the cholinergic system that proposed mechanism for memory improvement occurring by SGLT2 drugs. This study aimed to estimate the effect of CAN as compared to galantamine (GAL) treatments for two weeks on scopolamine hydrobromide (SCO)-induced memory dysfunction in experimental rats. Animals divided into six groups; control (CON), CAN, GAL, SCO, SCO + CAN and SCO + GAL...
November 1, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28828205/pattern-separation-performance-is-decreased-in-patients-with-early-multiple-sclerosis
#17
Vincent Planche, Aurélie Ruet, Julie Charré-Morin, Mathilde Deloire, Bruno Brochet, Thomas Tourdias
BACKGROUND: Hippocampal-dependent memory impairment is frequent and occurs early during the course of multiple sclerosis (MS). While mechanisms responsible for episodic memory dysfunction in patients with MS remain largely unknown, dentate gyrus structure has been suggested as particularly vulnerable at the early stage of the disease. If true, we hypothesized that the pattern separation component of episodic memory (a function known to be critically dependent to dentate gyrus function) would be impaired in patients with early MS (PweMS)...
August 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28757160/mitochondrial-impairments-contribute-to-spatial-learning-and-memory-dysfunction-induced-by-chronic-tramadol-administration-in-rat-protective-effect-of-physical-exercise
#18
Hajar Mehdizadeh, Jalal Pourahmad, Ghorban Taghizadeh, Nasim Vousooghi, Ali Yoonessi, Parvaneh Naserzadeh, Ladan Behzadfar, Mohammad Reza Rouini, Mohammad Sharifzadeh
Despite the worldwide use of tramadol, few studies have been conducted about its effects on memory and mitochondrial function, and controversial results have been reported. Recently, there has been an increasing interest in physical exercise as a protective approach to neuronal and cognitive impairments. Therefore, the aim of this study was to investigate the effects of physical exercise on spatial learning and memory and brain mitochondrial function in tramadol-treated rats. After completion of 2-week (short-term) and 4-week (long-term) treadmill exercise regimens, male Wistar rats received tramadol (20, 40, 80mg/kg/day) intraperitoneally for 30days...
October 3, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28733814/neuroprotective-effect-of-ipriflavone-against-scopolamine-induced-memory-impairment-in-rats
#19
Hani S Hafez, Doaa A Ghareeb, Samar R Saleh, Mariam M Abady, Maha A El Demellawy, Hend Hussien, Nihad Abdel-Monem
BACKGROUND: Alzheimer's disease is an age-related neurodegenerative disorder characterized clinically by a progressive loss of memory and cognitive functions resulting in severe dementia. Ipriflavone (IPRI) is a non-hormonal, semi-synthetic isoflavone, clinically used in some countries for the treatment and prevention of postmenopausal osteoporosis. Moreover, ipriflavone is a non-peptidomimetic small molecule AChE inhibitor with an improved bioavailability after systemic administration, due to its efficient blood-brain barrier permeability in comparison with peptidomimetic inhibitors...
October 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28716085/the-protective-effect-of-fermented-curcuma-longa-l-on-memory-dysfunction-in-oxidative-stress-induced-c6-gliomal-cells-proinflammatory-activated-bv2-microglial-cells-and-scopolamine-induced-amnesia-model-in-mice
#20
Cheong-Su Eun, Jong-Soon Lim, Jihye Lee, Sam-Pin Lee, Seun-Ah Yang
BACKGROUND: Curcuma longa L. is a well-known medicinal plant that has been used for its anti-cancer, neuroprotective, and hepatoprotective effects. However, the neuroprotective effect of fermented C. longa (FCL) has not been reported. Therefore, in this study, the effectiveness of FCL for the regulation of memory dysfunction was investigated in two brain cell lines (rat glioma C6 and murine microglia BV2) and scopolamine-treated mice. METHODS: C. longa powder was fermented by 5% Lactobacillus plantarum K154 containing 2% (w/v) yeast extract at 30 °C for 72 h followed by sterilization at 121 °C for 15 min...
July 17, 2017: BMC Complementary and Alternative Medicine
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