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https://www.readbyqxmd.com/read/28810545/electroacupuncture-attenuates-learning-and-memory-impairment-via-activation-of-%C3%AE-7nachr-mediated-anti-inflammatory-activity-in-focal-cerebral-ischemia-reperfusion-injured-rats
#1
Jiao Liu, Chunyan Li, Hongwei Peng, Kunqiang Yu, Jing Tao, Ruhui Lin, Lidian Chen
Studies have reported that electroacupuncture (EA) may reduce learning and memory impairment following cerebral ischemic injury. However, the precise mechanism of action remains unclear. In the present study, the attenuation of focal cerebral ischemia/reperfusion injury by EA in rats was investigated. EA at the Baihui (DU 20) and Shenting (DU 24) acupoints was demonstrated to significantly improve performance in the Morris water maze task, with shortened latency time and increased frequency of passing the platform...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28804233/effects-of-physical-activity-and-ginkgo-biloba-on-cognitive-function-and-oxidative-stress-modulation-in-ischemic-rats
#2
Ladan Vaghef, Hassan Bafandeh Gharamaleki
Either exercise or Ginkgo biloba is reported to improve cognitive functioning. The aim of this study is to compare the protective effects of forced exercise and Ginkgo biloba on oxidative stress as well as memory impairments induced by transient cerebral ischemia. Adult male Wistar rats were treated with treadmill running or Ginkgo biloba extract for 2 weeks before cerebral ischemia. Memory was assessed using a Morris water maze (MWM) task. At the end of the behavioral testing, oxidative stress biomarkers were evaluated in the hippocampus tissue...
September 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28798681/dl-3-n-butylphthalide-treatment-enhances-hemodynamics-and-ameliorates-memory-deficits-in-rats-with-chronic-cerebral-hypoperfusion
#3
Zhilin Xiong, Weibiao Lu, Lihui Zhu, Ling Zeng, Changzheng Shi, Zhen Jing, Yonghui Xiang, Wenxian Li, Chi Kwan Tsang, Yiwen Ruan, Li'an Huang
Our previous study has revealed that chronic cerebral hypoperfusion (CCH) activates a compensatory vascular mechanism attempting to maintain an optimal cerebral blood flow (CBF). However, this compensation fails to prevent neuronal death and cognitive impairment because neurons die prior to the restoration of normal CBF. Therefore, pharmacological invention may be critical to enhance the CBF for reducing neurodegeneration and memory deficit. Dl-3-n-butylphthalide (NBP) is a compound isolated from the seeds of Chinese celery and has been proven to be able to prevent neuronal loss, reduce inflammation and ameliorate memory deficits in acute ischemic animal models and stroke patients...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28756941/peripheral-lipid-oxidative-stress-markers-are-related-to-vascular-risk-factors-and-subcortical-small-vessel-disease
#4
Walter Swardfager, Di Yu, Gustavo Scola, Hugo Cogo-Moreira, Parco Chan, Yi Zou, Nathan Herrmann, Krista L Lanctôt, Joel Ramirez, Fuqiang Gao, Mario Masellis, Richard H Swartz, Demetrios J Sahlas, Pak Cheung Chan, Carmen Ojeda-Lopez, Angela Milan-Tomas, Jacqueline A Pettersen, Ana C Andreazza, Sandra E Black
Subcortical white matter hyperintensities (WMH), presumed to indicate small vessel ischemic vascular disease, are found commonly in elderly individuals with and without Alzheimer's disease (AD). Oxidative stress may instigate or accelerate the development of vascular disease, and oxidative stress markers are elevated in AD. Here, we assess independent relationships between three serum lipid peroxidation markers (lipid hydroperoxides [LPH], 8-isoprostane, and 4-hydroxynonenal) and the presence of extensive subcortical WMH and/or AD...
July 11, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28727668/comprehensive-cardiac-rehabilitation-for-secondary-prevention-after-transient-ischemic-attack-or-mild-stroke-psychological-profile-and-outcomes
#5
Peter L Prior, Vladimir Hachinski, Richard Chan, Karen Unsworth, Sharon Mytka, Michael Harnadek, Christina OʼCallaghan, Neville Suskin
PURPOSE: Having previously reported that comprehensive cardiac rehabilitation (CCR) is effective for secondary prevention post-transient ischemic attack (TIA)/mild nondisabling stroke (MNDS), we present psychometric findings for the same sample that elucidate subacute TIA/MNDS psychological outcomes and test whether CCR would be independently associated with psychological improvements. METHODS: In this prospective cohort trial patients with ≥1 risk factor, recruited from a stroke prevention clinic within 12 months (mean = 11...
July 19, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28713958/lipo%C3%A2-prostaglandin-e1-modifies-cognitive-impairment-in-rats-with-vascular-cognitive-impairment-by-promoting-angiogenesis-via-the-vegf-vegfr-pathway
#6
Bohui Liu, Suping Zhang, Xifeng Xiong, Li Ling, Rui He, Muzhen Wang, Wanqing Deng, Zhihe Liu, Yi Li
The pathological mechanism of vascular cognitive impairment (VCI) involves ischemic lesions in the hippocampus. Prostaglandin E1 (PGE1) serves roles in the promotion of vascular endothelial growth factor (VEGF) expression, angiogenesis and enhances blood flow to ischemic regions. However, the effect of PGE1 on cognitive function in VCI rats and the underlying mechanism are unknown. In the current study, learning and memory function in VCI rats treated by lipo‑PGE1 injection was assessed through Morris Water Maze test...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28712815/asymptomatic-carotid-stenosis-is-associated-with-cognitive%C3%A2-impairment
#7
Brajesh K Lal, Moira C Dux, Siddhartha Sikdar, Carly Goldstein, Amir A Khan, John Yokemick, Limin Zhao
BACKGROUND: Cerebrovascular risk factors (eg, hypertension, coronary artery disease) and stroke can lead to vascular cognitive impairment. The Asymptomatic Carotid Stenosis and Cognitive Function study evaluated the isolated impact of asymptomatic carotid stenosis (no prior ipsilateral or contralateral stroke or transient ischemic attack) on cognitive function. Cerebrovascular hemodynamic and carotid plaque characteristics were analyzed to elucidate potential mechanisms affecting cognition...
July 13, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28711656/upregulation-of-cdh1-signaling-in-the-hippocampus-attenuates-brain-damage-after-transient-global-cerebral-ischemia-in-rats
#8
Bo Zhang, Kai Wei, Xuan Li, Rong Hu, Jin Qiu, Yue Zhang, Wenlong Yao, Chuanhan Zhang, Chang Zhu
Cerebral ischemia is a major cause of brain dysfunction. The E3 ubiquitin ligase anaphase-promoting complex and its coactivator Cdh1 have been reported to be involved in the regulation of neuronal survival, differentiation, axonal growth and synaptic development in the central nervous system. However, its role in the ischemic brain and the underlying mechanisms remain poorly understood. The present study aimed to investigate the effects of Cdh1 overexpression on the ischemic rat brain by direct intra-hippocampal injection of lentivirus-delivered Cdh1 before transient global cerebral ischemia reperfusion...
July 12, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28700093/interleukin-10-release-from-astrocytes-suppresses-neuronal-apoptosis-via-the-tlr2-nf%C3%AE%C2%BAb-pathway-in-a-neonatal-rat-model-of-hypoxic-ischemic-brain-damage
#9
Mu Lan He, Ze Yu Lv, Xia Shi, Ting Yang, Yun Zhang, Ting-Yu Li, Jie Chen
The biological function of Interleukin-10 (IL-10) and the relationship between IL-10 secretion and the Toll-like receptor 2 (TLR2) expression levels in the central nervous system following hypoxic-ischemic brain damage (HIBD) are poorly understood. Here, we intend to elucidate the biological function and mechanism of IL-10 secretion following HIBD. In the current study, we used a neonatal rat model of HIBD and found that rats injected with adeno-associated virus (AAV)-IL-10-shRNA (short hairpin RNA) exhibited partially impaired learning and memory function compared to rats administered AAV-control-shRNA...
July 12, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28647597/hypoxic-postconditioning-improves-behavioural-deficits-at-6-weeks-following-hypoxic-ischemic-brain-injury-in-neonatal-rats
#10
Jonathan D Teo, Margaret J Morris, Nicole M Jones
Hypoxic-ischemic (HI) brain injury in newborns is associated with high morbidity and mortality, with many babies suffering neurological deficits. Recently, we showed that hypoxic postconditioning (PostC) immediately post injury can protect against HI up to one week in neonatal rats. Here, we aimed to examine whether long term functional deficits were also improved by PostC. Sprague-Dawley rats were assigned to control (C) or HI group on postnatal day 7 (P7). The HI group underwent unilateral carotid artery occlusion followed by hypoxia (7% oxygen, 3h)...
June 21, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28647417/recurrent-thromboembolic-events-after-ischemic-stroke-in-patients-with-primary-brain-tumors
#11
Neal S Parikh, Jaclyn E Burch, Hooman Kamel, Lisa M DeAngelis, Babak B Navi
BACKGROUND: Stroke mechanisms and the risk of recurrent thromboembolism are incompletely understood in patients with primary brain tumors. We sought to better delineate these important clinical features. METHODS: We performed a retrospective cohort study of adults with primary brain tumors diagnosed with magnetic resonance imaging-confirmed acute ischemic stroke at the Memorial Sloan Kettering Cancer Center from 2005 to 2015. Study neurologists collected data on patients' cancer history, stroke risk factors, treatments, and outcomes...
June 21, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28641538/glt-1-upregulation-as-a-potential-therapeutic-target-for-ischemic-brain-injury
#12
Yu-Yan Hu, Li Li, Xiao-Hui Xian, Min Zhang, Xiao-Cai Sun, Shu-Qin Li, Xin Cui, Jie Qi, Wen-Bin Li
Glutamate is the primary excitatory neurotransmitter in the mammalian central nervous system, which plays an important role in many aspects of normal brain function such as neural development, motor functions, learning and memory etc. However, excessive accumulation of glutamate in the extracellular fluid will induce excitotoxicity which is considered to be a major mechanism of cell death in brain ischemia. There is no enzyme to decompose the glutamate in extracellular fluid, so extracellular glutamate homeostasis within the central nervous system is mainly regulated by the uptake activity of excitatory amino acid transporters...
June 22, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28639375/challenges-in-regenerating-the-diabetic-heart-a-comprehensive-review
#13
REVIEW
Venkata R Satthenapalli, Regis R Lamberts, Rajesh Katare
Stem cell therapy is one of the promising regenerative strategies developed to improve cardiac function in patients with ischemic heart diseases (IHD). However, this approach is limited in IHD patients with diabetes due to a progressive decline in the regenerative capacity of stem cells. This decline is mainly attributed to the metabolic memory incurred by diabetes on stem cell niche and their systemic cues. Understanding the molecular pathways involved in the diabetes-induced deterioration of stem cell function will be critical for developing new cardiac regeneration therapies...
June 22, 2017: Stem Cells
https://www.readbyqxmd.com/read/28604410/feasibility-and-neurobehavioral-changes-of-10-day-simulated-microgravity-in-acute-ischemic-stroke-patients
#14
Kyo-In Koo, Dae Kwon Park, Chang Ho Hwang
OBJECTIVE: The aim of the study was to investigate feasibility and functional changes of simulated microgravity with 6-degree head-down-tilt (HDT) bed rest in acute ischemic stroke. DESIGN: Patients without lesions in the cingulate cortex and/or cerebellum were enrolled. They underwent HDT for 30 minutes twice per day for 10 weekdays. Systolic blood pressure, diastolic blood pressure, and heart rate were measured before the HDT, immediately after, and also 30 minutes after the stop...
June 9, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28599922/vitamin-d-improves-functional-outcomes-in-neonatal-hypoxic-ischemic-male-rats-treated-with-n-acetylcysteine-and-hypothermia
#15
Danielle W Lowe, Jamie L Fraser, Laura Grace Rollins, Jessica Bentzley, Xingju Nie, Renee Martin, Inderjit Singh, Dorothea Jenkins
Hypothermia treatment neuroprotects approximately 50% of neonates who present with moderate to severe hypoxic ischemic encephalopathy (HIE). N-acetylcysteine (NAC), a potent antioxidant, is neuroprotective in combination with hypothermia in neonatal hypoxia-ischemia (HI) female rats, but less protective in males. Vitamin D is a neurosteroid, which may provide immunomodulation and improve outcomes for both sexes. We investigated the efficacy of this combination of drugs with hypothermia after severe HI, as well as potential mechanisms of vitamin D effects in the transition to chronic inflammation...
June 6, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28595184/neuropsychological-profiles-differentiate-alzheimer-disease-from-subcortical-ischemic-vascular-dementia-in-an-autopsy-defined-cohort
#16
Liliana Ramirez-Gomez, Ling Zheng, Bruce Reed, Joel Kramer, Dan Mungas, Chris Zarow, Harry Vinters, John M Ringman, Helena Chui
BACKGROUND/AIMS: The aim of this study was to assess the ability of neuropsychological tests to differentiate autopsy-defined Alzheimer disease (AD) from subcortical ischemic vascular dementia (SIVD). METHODS: From a sample of 175 cases followed longitudinally that underwent autopsy, we selected 23 normal controls (NC), 20 SIVD, 69 AD, and 10 mixed cases of dementia. Baseline neuropsychological tests, including Memory Assessment Scale word list learning test, control oral word association test, and animal fluency, were compared between the three autopsy-defined groups...
June 9, 2017: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/28584000/ischemic-amnesia-causes-and-outcome
#17
Patrik Michel, Valérie Beaud, Ashraf Eskandari, Philippe Maeder, Jean-François Demonet, Elissavet Eskioglou
BACKGROUND AND PURPOSE: We aimed to describe the frequency and characteristics of acute ischemic stroke and transient ischemic attacks presenting predominantly with amnesia (ischemic amnesia) and to identify clinical clues for differentiating them from transient global amnesia (TGA). METHODS: We retrospectively analyzed and described all patients presenting with diffusion-weighted imaging magnetic resonance imaging-confirmed acute ischemic stroke/transient ischemic attacks with antero- and retrograde amnesia as the main symptom over a 13...
June 5, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28576310/the-paracrine-effect-of-cobalt-chloride-on-bmscs-during-cognitive-function-rescue-in-the-hibd-rat
#18
Ying Dai, Wendi Li, Min Zhong, Jie Chen, Qian Cheng, Youxue Liu, Tingyu Li
Hypoxia-ischemia (HI)-induced perinatal encephalopathy frequently causes chronic neurological morbidities and acute mortality. Bone mesenchymal stem cell (BMSC) transplantation could potentially promote functional and anatomical recovery of ischemic tissue. In vitro hypoxic preconditioning is an effective strategy to improve the survival of BMSCs in ischemic tissue. In this study, cobalt chloride (CoCl2) preconditioned medium from BMSC cultures was injected into the left lateral ventricle of HI rats using a micro-osmotic pump at a flow rate 1...
May 30, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28565820/beneficial-effects-of-jiawei-shenqi-wan-and-treadmill-training-on-deficits-associated-with-neonatal-hypoxic-ischemia-in-rats
#19
Ha Neui Kim, Malk Eun Pak, Myung Jun Shin, Soo Yeon Kim, Yong Beom Shin, Young Ju Yun, Hwa Kyoung Shin, Byung Tae Choi
Jiawei Shenqi-wan (JSQW), which comprises Shenqi-wan and two additional medicinal herbs, has been widely used for the treatment of various growth impairments, including cerebral palsy. In the present study, JSQW was administered to hypoxic-ischemic Sprague-Dawley rats that underwent treadmill training from 4-7 weeks of age to examine the beneficial effects of combined JSQW and treadmill therapy. Behavioral examinations were performed and a significant improvement in cylinder test performance was observed in rats treated with treadmill training compared with hypoxic-ischemia rats (P<0...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28549819/rivaroxaban-for-stroke-prevention-in-patients-with-nonvalvular-atrial-fibrillation-and-active-cancer
#20
RANDOMIZED CONTROLLED TRIAL
Eva S Laube, Anthony Yu, Dipti Gupta, Yimei Miao, Patrick Samedy, Jonathan Wills, Stephen Harnicar, Gerald A Soff, Simon Mantha
Rivaroxaban is broadly used for the primary prevention of stroke and systemic embolism in the general population with nonvalvular atrial fibrillation (AF). However, there is little published evidence on the safety and efficacy of rivaroxaban for AF in patients with active cancer. The aim of this study was to assess the safety and efficacy of rivaroxaban in patients with active cancer and AF. The use of rivaroxaban in patients with cancer at the Memorial Sloan Kettering Cancer Center is monitored in the setting of a Quality Assessment Initiative...
July 15, 2017: American Journal of Cardiology
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