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https://www.readbyqxmd.com/read/28231543/date-seed-extract-ameliorates-%C3%AE-amyloid-induced-impairments-in-hippocampus-of-male-rats
#1
Farzaneh Dehghanian, Taj Pari Kalantaripour, Khadijeh Esmaeilpour, Leila Elyasi, Hakime Oloumi, Fatmeh Mehdi Pour, Majid Asadi-Shekaari
Alzheimer's disease (AD) is the most prevalent neurodegenerative disorder among the elderly. Because the existing treatments for Alzheimer's disease only offer limited symptomatic alleviation, more efficient therapeutic agents are urgently needed. Date seed is a hepatoprotective and neuroprotective agent. Date seed extract (DSE) has bioactive components like phenolics, flavonoids, and vitamins. In view of the ameliorative effects of DSE against an oxidative injury, the current study was designed to reveal whether DSE has a neuroprotective resource in the rat model of Alzheimer's disease...
February 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28230352/disease-modifying-effects-of-m1-muscarinic-acetylcholine-receptor-activation-in-an-alzheimer-s-disease-mouse-model
#2
Evan P Lebois, Jason P Schroeder, Thomas J Esparza, Thomas M Bridges, Craig W Lindsley, P Jeffrey Conn, David L Brody, John Scott Daniels, Allan I Levey
Alzheimer's Disease (AD) is the leading cause of dementia worldwide and currently no disease-modifying therapy is available to slow or prevent AD, underscoring the urgent need for neuroprotective therapies. Selective M1 muscarinic acetylcholine receptor (mAChR) activation is an attractive mechanism for AD therapy since M1 mediates key effects on memory, cognition, and behavior and has potential for disease-modifying effects on Aβ formation and tau phosphorylation. To validate M1 as a neuroprotective treatment target for AD, the M1-selective agonist, VU0364572, was chronically dosed to 5XFAD mice from a young age preceding Aβ pathology (2 months) to an age where these mice are known to display memory impairments (6 months)...
February 23, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28217426/treatment-of-anterior-shoulder-subluxation-using-the-mulligan-concept-and-reflex-neuromuscular-stabilization-a-case-report
#3
Robinetta A Hudson, Russell T Baker, Alan Nasypany, Don Reordan
BACKGROUND AND PURPOSE: Shoulder instability, a common issue among athletes who engage in contact sports, may lead to recurrent subluxations, or partial dislocations of the shoulder. Young athletic patients generally respond poorly to the nonsurgical treatments for shoulder instability that are commonly utilized. The purpose of this case report is to describe the effects of the treatment guided by the Mulligan Concept (MC) coupled with reflex neuromuscular stabilization (RNS) also known as reactive neuromuscular training (RNT), on an adolescent football player with glenohumeral joint (GHJ) instability who sustained a traumatic anterior subluxation...
February 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28214838/the-role-of-hippocampal-structural-synaptic-plasticity-in-repetitive-transcranial-magnetic-stimulation-to-improve-cognitive-function-in-male-samp8-mice
#4
Jiang Ma, Jinhua Wang, Chaonan Lv, Jingjuan Pang, Bing Han, Mingwei Wang, Yuan Gen
BACKGROUND: Repetitive transcranial magnetic stimulation (rTMS) has been used to improve cognitive function, but the stimulation protocols are variable and the underlying mechanism is unclear. Therefore, we intend to examine whether 5Hz rTMS with 30% maximum output could improve cognitive functions in senescence-accelerated-prone mouse 8 (SAMP8) through changing synaptic plasticity. METHODS: SAMP8 and senescence-accelerated-prone mouse/resistant 1 (SAMR1) (7-month old male) were randomly divided into 3 groups: SMAP8 rTMS group (P8-rTMS), SMAP8 sham-rTMS group (P8-sham), and SAMR1 sham-rTMS group (R1-sham)...
January 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214540/cognitive-performance-of-male-and-female-c57bl-6j-mice-after-repetitive-concussive-brain-injuries
#5
Alexander G Velosky, Laura B Tucker, Amanda H Fu, Jiong Liu, Joseph T McCabe
In contact sports, repetitive concussive brain injury (rCBI) is the prevalent form of head injury seen in athletes. The need for effective treatment is urgent as rCBI has been associated with a host of cognitive, behavioral and neurological complaints. There has been a growing trend in the use of female animals in pre-clinical research, but few studies have investigated possible sex differences following rCBI. The goal of the current study was to determine any differences between male and female C57BL/6J mice on assessments of learning and memory after repetitive concussive injury...
February 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28211103/impaired-learning-and-memory-in-rats-induced-by-a-high-fat-diet-involvement-with-the-imbalance-of-nesfatin-1-abundance-and-copine-6-expression
#6
Zheng Chen, Ya-Yun Xu, Rui Wu, Yin-Xiu Han, Yue Yu, Jin-Fang Ge, Fei-Hu Chen
Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease, resulting not only in liver dysfunction, glucose and lipid metabolism disorder, but also in neuropsychiatric damage. In the present study, a NAFLD rat model was established via feeding of a high-fat diet, and the behavior was observed via the open field test (OFT), the sucrose preference test (SPT), the elevated plus maze (EPM), the forced swimming test (FST), and the Morris water maze (MWM). The plasma concentrations of alanine aminotransferase (ALT), glucose, free fatty acid (FFA), total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) were detected using chemiluminescence technique...
February 17, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28195006/the-differential-effects-of-high-fat-and-high-fructose-diets-on-physiology-and-behavior-in-male-rats
#7
Lauren Woodie, Sarah Blythe
OBJECTIVES: The purpose of the current study is to directly compare a diet high in fat with a diet high in fructose. This side-by-side comparison will allow us to determine the physiological and behavioral effects resulting from the consumption of a diet dominated by one macronutrient. METHODS: Rats were fed pelletized food containing either 60% fat or 55% fructose diet, or control chow (5.8% kcal of fat, 44.3% kcal carb) for 9 weeks. Animals performed a classic Morris Water Maze (MWM) and a reversal MWM to assess spatial and working memory near the end of the feeding period...
February 14, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28193543/reduction-of-manganese-intake-improves-neuropsychological-manifestations-in-rats-with-minimal-hepatic-encephalopathy
#8
Ying Li, Lihong Mei, Jinwei Qiang, Changxue Ji, Shuai Ju
Brain manganese deposition is led by liver dysfunction and/or portal-systemic shunting in minimal hepatic encephalopathy (MHE). Manganese is toxic and can cause cognitive disorders and extrapyramidal symptoms. Thus, reduction of manganese intake might be considered as a potential treatment strategy for MHE. In this study we aimed to investigate whether low- or no-manganese feed can improve the neuropsychological manifestations in MHE rats. Rats with MHE were established by partially ligating the portal vein and fed a manganese diet (MHE-M, 10mg per kg feed; n=24), a no-manganese diet (MHE-N; n=24) and a half-manganese diet (MHE-H; n=24) for 2, 4, 6 and 8weeks, with six rats in each subgroup...
February 11, 2017: Neuroscience
https://www.readbyqxmd.com/read/28188358/protective-effect-of-valproic-acid-in-streptozotocin-induced-sporadic-alzheimer-s-disease-mouse-model-possible-involvement-of-the-cholinergic-system
#9
Mirna Ezzat Sorial, Nesrine Salah El Dine El Sayed
Sporadic Alzheimer's disease (SAD) is a slowly progressive neurological disorder that is the most common form of dementia. Cholinergic system dysfunction and amyloid beta formation are the two main underlying pathological mechanisms for the disease development. In recent studies, insulin receptor desensitization and disturbances in the downstream effects of insulin receptor signaling were observed in the brains of Alzheimer's patients. Currently, intracereberoventricular (ICV) injection of streptozotocin (STZ) is found to induce behavioral, neurochemical, and structural alterations in animals resembling those found in SAD patients...
February 10, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28185983/prenatal-melamine-exposure-impairs-spatial-cognition-and-hippocampal-synaptic-plasticity-by-presynaptic-and-postsynaptic-inhibition-of-glutamatergic-transmission-in-adolescent-offspring
#10
Lei An, Wei Sun
Our previous studies showed that prenatal melamine exposure (PME) could impair spatial cognition and hippocampal long-term potentiation (LTP). More importantly, the synaptic dysfunction induced by PME was associated with the probability of presynaptic glutamate release. Considering the crucial role of the other form of synaptic plasticity, long-term depression (LTD), in some types of learning and memory process, the aim of present study was to investigate if the hippocampal LTD and cognitive flexibility were affected...
February 6, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28185128/effects-of-trpm7-mir-34a-gene-silencing-on-spatial-cognitive-function-and-hippocampal-neurogenesis-in-mice-with-type-1-diabetes-mellitus
#11
Qing-Jiu Zhang, Jie Li, Song-Yun Zhang
This study aimed to explore the effects of transient receptor potential melastatin 7 (TRPM7)/microRNA-34a (miR-34a) gene silencing on spatial cognitive function and hippocampal neurogenesis in mice with type 1 diabetes mellitus (T1DM). BALB/c mice were chosen to establish T1DM models and divided into five groups respectively: the negative control (NC), T1DM, T1DM + si-TRPM7, T1DM + si-miR-34a, and T1DM + si-TRPM7 + si-miR-34a groups. Morris water maze (MWM) test was adopted to observe behavioral alterations in mice...
February 9, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28178591/attenuation-of-stress-induced-memory-deficits-by-nonsteroidal-anti-inflammatory-drugs-nsaids-in-rats-role-of-antioxidant-enzymes
#12
Shaista Emad, Sara Qadeer, Sana Sadaf, Zehra Batool, Saida Haider, Tahira Perveen
BACKGROUND: Repeated stress paradigms have been shown to cause devastating alterations on memory functions. Stress is linked with inflammation. Psychological and certain physical stressors could lead to neuroinflammation. Inflammatory process may occur by release of mediators and stimulate the production of prostaglandins through cyclooxygenase (COX). Treatment with COX inhibitors, which restrain prostaglandin production, has enhanced memory in a number of neuroinflammatory states showing a potential function for raised prostaglandins in these memory shortfalls...
November 29, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28176624/vitamin-d-combined-with-resveratrol-prevents-cognitive-decline-in-samp8-mice
#13
Jinbo Cheng, Yehua Rui, Liqiang Qin, Jiaying Xu, Shufen Han, Linxi Yuan, Xuebin Yin, Zhongxiao Wan
Background Vitamin D (VD) and resveratrol (RSV) are two nutritional molecules that have reported neuroprotective effects, and findings from cellular models suggest that resveratrol could potentiate vitamin D's effects. The senescence-accelerated mouse-prone 8 (SAMP8) is a useful model of Alzheimer's disease (AD)-related memory impairment. Objective We aimed to explore how the combination of vitamin D with resveratrol would affect memory impairments shown by SAMP8 mice, as well as the potential mechanisms...
February 6, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28174534/behavioral-changes-and-hippocampus-glucose-metabolism-in-app-ps1-transgenic-mice-via-electro-acupuncture-at-governor-vessel-acupoints
#14
Jin Cao, Yinshan Tang, Yujie Li, Kai Gao, Xudong Shi, Zhigang Li
Objective: Investigating the effects of electro-acupuncture (EA) treatment on mice with Alzheimer's disease (AD), using Morris water maze (MWM) for spatial learning and memory behavior tests combined with micro-positron emission tomography (micro-PET) imaging for glucose metabolism in hippocampus. Methods: Thirty seven-month-old APP/PS1 mice were randomly divided into AD Model group (AD group), medicine group (M group) and EA group, C57BL/6 mice were used for Normal control group (N group), n = 10 in each group...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28173624/evidence-for-the-role-of-histaminergic-pathways-in-neuroprotective-mechanism-of-ischemic-postconditioning-in-mice
#15
Indresh Kaur, Amit Kumar, Amteshwar S Jaggi, Nirmal Singh
The present study has been designed to investigate the possible role of histaminergic pathway in neuroprotective mechanism of ischemic postconditioning (iPoCo). Bilateral carotid artery occlusion (BCAO) for 12 min followed by reperfusion for 24 hr was employed to produce I/R induced cerebral injury in NIH mice. iPoCo involving three episodes of carotid artery occlusion and reperfusion of 10 sec each, was instituted immediately after BCAO just before prolonged reperfusion. Cerebral infarct size was measured using triphenyltetrazolium chloride staining...
February 7, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/28152479/inhibitor-of-phosphodiestearse-4-improves-memory-deficits-oxidative-stress-neuroinflammation-and-neuropathological-alterations-in-mouse-models-of-dementia-of-alzheimer-s-type
#16
Amit Kumar, Nirmal Singh
The study investigates the potential of Rolipram a phosphodiesterase-4 inhibitor in cognitive deficits induced by streptozotocin (STZ, 3mg/kg intracerebroventricularly) and natural ageing in mice. Morris water maze (MWM) test was employed to evaluate learning and memory of the animals. Extent of oxidative stress was measured by estimating the levels of brain glutathione (GSH) and thiobarbituric acid reactive species (TBARS). Brain acetylcholinestrase (AChE) activity was also estimated. The brain activity of myeloperoxidase (MPO) was measured as a marker of inflammation...
January 30, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28147245/angiotensin-1-7-administration-attenuates-alzheimer-s-disease-like-neuropathology-in-rats-with-streptozotocin-induced-diabetes-via-mas-receptor-activation
#17
Jin-Liang Chen, Dong-Ling Zhang, Yue Sun, Yu-Xing Zhao, Ke-Xiang Zhao, Die Pu, Qian Xiao
Diabetes mellitus (DM) is associated with cognitive deficits and an increased risk of Alzheimer's disease (AD). Recently, a newly identified heptapeptide of the renin-angiotensin system (RAS), angiotensin-(1-7) [Ang-(1-7)], was found to protect against brain damage. This study investigated the effects of Ang-(1-7) on diabetes-induced cognitive deficits. Sprague-Dawley rats were randomly divided into four groups. Diabetes was induced via single i.p. streptozotocin (STZ) injections. Ten weeks after diabetes induction, rats in each group received an intracerebral-ventricular (ICV) infusion of either vehicle, Ang-(1-7) alone, or Ang-(1-7)+A779 daily for two weeks...
January 29, 2017: Neuroscience
https://www.readbyqxmd.com/read/28132032/effect-of-salacia-reticulata-w-and-clitoria-ternatea-l-on-the-cognitive-and-behavioral-changes-in-the-streptozotocin-induced-young-diabetic-rats
#18
R Rajashree, Rajani Patil, Sanjiva D Khlokute, Shivaprasad S Goudar
BACKGROUND: Diabetes mellitus (DM) of juvenile onset affects both the peripheral and central nervous systems (CNS). However, central effects are less documented and studied than peripheral deficits. Currently, the only feasible treatment available for type 1 DM (T1DM) is insulin which has its own limitations. Hence, an alternative therapy, especially a newer herbal formulation is very much the need of the time. The present study aimed to determine the effects of the alcoholic extracts of roots of the Salacia reticulata W...
January 30, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28127705/the-effects-of-vitamin-c-on-hypothyroidism-associated-learning-and-memory-impairment-in-juvenile-rats
#19
Farimah Beheshti, Sareh Karimi, Farzaneh Vafaee, Mohammad Naser Shafei, Hamid Reza Sadeghnia, Mosa Al Reza Hadjzadeh, Mahmoud Hosseini
In this study the effects of Vitamin C (Vit C) on hypothyroidism-associated learning and memory impairment in juvenile rats was investigated. The pregnant rats were kept in separate cages. After delivery, they were randomly divided into six groups and treated: (1) Control; (2) Propylthiouracil (PTU) which 0.005% PTU in their drinking; (3-5) Propylthiouracil- Vit C groups; besides PTU, dams in these groups received 10, 100 and 500 mg/kg Vit C respectively, (6) one group as a positive control; the intact rats received an effective dose, 100 mg/kg Vit...
January 26, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28126402/long-term-cognitive-effects-of-uridine-treatment-in-a-neonatal-rat-model-of-hypoxic-ischemic-encephalopathy
#20
Bulent Goren, Aysen Cakir, Busra Ocalan, Sema Serter Kocoglu, Tulin Alkan, Mehmet Cansev, Nevzat Kahveci
Hypoxic-ischemic encephalopathy (HIE), is the most common brain disorder in neonates during the perinatal period, which, to date, can only be managed to some extent by hypothermia. Uridine is the principal circulating pyrimidine in humans which is utilized as a precursor for membrane phospholipid biosynthesis. Uridine has recently been shown to provide clinical benefit in treatment of Alzheimer's disease due to its involvement in increasing number of brain synapses along with other phospholipid precursors. We previously showed that uridine treatment ameliorated brain damage by reducing apoptosis in a rat model of neonatal HIE...
January 23, 2017: Brain Research
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