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Neuroprotection

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https://www.readbyqxmd.com/read/29232315/beneficial-effects-of-exercise-pretreatment-in-a-sporadic-alzheimer-s-rat-model
#1
Chongyun Wu, Luodan Yang, Donovan Tucker, Yan Dong, Ling Zhu, Rui Duan, Timon Cheng-Yi Liu, Quanguang Zhang
PURPOSE: This study aimed to examine the effects of swimming exercise pretreatment on a streptozotocin (STZ)-induced sporadic Alzheimer's disease rat model and provide an initial understanding of related molecular mechanisms. METHODS: Male 2.5-month-old Sprague-Dawley rats were divided into the following 4 groups: a) control, b) swim + vehicle, c) STZ without swim, and d) swim + STZ. The Barnes Maze task and Novel Object Recognition test were used to measure hippocampus-dependent spatial learning and working memory, respectively...
December 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29232252/nicotinamide-adenine-dinucleotide-and-its-related-precursors-for-the-treatment-of-alzheimer-s-disease
#2
Nady Braidy, Ross Grant, Perminder S Sachdev
PURPOSE OF REVIEW: The current review discusses the biology and metabolism of the essential pyridine nucleotide nicotinamide adenine dinucleotide (NAD+) in the central nervous system. We also review recent work suggesting important neuroprotective effects that may be associated with the promotion of NAD+ levels through NAD+ precursors against Alzheimer's disease. RECENT FINDINGS: Perturbations in the physiological homoeostatic state of the brain during the ageing process can lead to impaired cellular function, and ultimately leads to loss of brain integrity and accelerates cognitive and memory decline...
December 9, 2017: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/29232249/clinical-trials-in-valvular-surgery-a-2018-update
#3
Bobby Yanagawa, Amine Mazine, Derrick Y Tam, Subodh Verma
PURPOSE OF REVIEW: There is a growing emphasis on the conduct of large-scale, multicenter randomized controlled trials (RCTs) to guide decision-making in cardiac surgery. Here we review recent landmark RCTs in cardiac valvular surgery. RECENT FINDINGS: RCTs are the gold-standard level of data in medicine. However, there are unique challenges of conducting large-scale surgical trials including funding, blinding, generalizability, nonstandardization of the surgical technique, crossover, among others...
December 11, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/29230633/alteration-of-the-pac1-receptor-expression-in-the-basal-ganglia-of-mptp-induced-parkinsonian-macaque-monkeys
#4
M Feher, B Gaszner, A Tamas, A L Gil-Martinez, E Fernandez-Villalba, M T Herrero, D Reglodi
Pituitary adenylate cyclase-activating polypeptide (PACAP) is a well-known neuropeptide with strong neurotrophic and neuroprotective effects. PACAP exerts its protective actions via three G protein-coupled receptors: the specific Pac1 receptor (Pac1R) and the Vpac1/Vpac2 receptors, the neuroprotective effects being mainly mediated by the Pac1R. The protective role of PACAP in models of Parkinson's disease and other neurodegenerative diseases is now well-established in both in vitro and in vivo studies. PACAP and its receptors occur in the mammalian brain, including regions associated with Parkinson's disease...
December 11, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/29230619/neuroanatomical-and-molecular-correlates-of-cognitive-and-behavioural-outcomes-in-hypogonadal-males
#5
O B Akinola, M O Gabriel
Robust epidemiological, clinical and laboratory evidence supports emerging roles for the sex steroids in such domains as neurodevelopment, behaviour, learning and cognition. Regions of the mammalian brain that are involved in cognitive development and memory do not only express the classical nuclear androgen receptor, but also the non-genomic membrane receptor, which is a G protein-coupled receptor that mediates some rapid effects of the androgens on neurogenesis and synaptic plasticity. Under physiological conditions, hippocampal neurons do express the enzyme aromatase, and therefore actively aromatize testosterone to oestradiol...
December 11, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29230603/amp-activated-protein-kinase-activation-in-mediating-phenylalanine-induced-neurotoxicity-in-experimental-models-of-phenylketonuria
#6
Lihua Lu, Xiaoming Ben, Lingling Xiao, Min Peng, Yongjun Zhang
Phenylketonuria (PKU), one of the most prevalent autosomal recessive disorders of amino acid metabolism, is characterized by abnormal accumulation of phenylalanine, which can lead to intellectual disability. The main pathologic changes in the central nervous system of untreated phenylketonuric patients are reductions in the number of axons, dendrites, and synapses in the brain. Such alterations are thought to be mainly associated with the toxic effects caused by phenylalanine. However, the underlying molecular mechanisms have not been fully elucidated...
December 11, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/29230425/neuroprotective-potential-of-gentongping-in-rat-model-of-cervical-spondylotic-radiculopathy-targeting-ppar-%C3%AE-pathway
#7
Wen Sun, Kang Zheng, Bin Liu, Danping Fan, Hui Luo, Xiaoyuan Qu, Li Li, Xiaojuan He, Jianfeng Yi, Cheng Lu
Cervical spondylotic radiculopathy (CSR) is the most general form of spinal degenerative disease and is characterized by pain and numbness of the neck and arm. Gentongping (GTP) granule, as a classical Chinese patent medicine, has been widely used in curing CSR, whereas the underlying mechanism remains unclear. Therefore, the aim of this study is to explore the pharmacological mechanisms of GTP on CSR. The rat model of CSR was induced by spinal cord injury (SCI). Our results showed that GTP could significantly alleviate spontaneous pain as well as ameliorate gait...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/29230100/dl-3-n-butylphthalide-prevents-the-disruption-of-blood-spinal-cord-barrier-via-inhibiting-endoplasmic-reticulum-stress-following-spinal-cord-injury
#8
Binbin Zheng, Yulong Zhou, Hongyu Zhang, Guangyong Yang, Zhenghua Hong, Dandan Han, Qingqing Wang, Zili He, Yanlong Liu, Fenzan Wu, Xie Zhang, Songlin Tong, Huazi Xu, Jian Xiao
After spinal cord injury (SCI), the destruction of blood-spinal cord barrier (BSCB) is shown to accelerate gathering of noxious blood-derived components in the nervous system, leading to secondary neurodegenerative damages. SCI activates endoplasmic reticulum stress (ER stress), which is considered to evoke secondary damages of neurons and glia. Recent evidence indicates that Dl-3-n-butylphthalide (NBP) has the neuroprotective effect in ischaemic brain injury, but whether it has protective effects on SCI or not is largely unclear...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29229533/xanthoceraside-attenuates-amyloid-%C3%AE-peptide1-42-induced-memory-impairments-by-reducing-neuroinflammatory-responses-in-mice
#9
Yue Qi, Xue-Fei Ji, Tian-Yan Chi, Peng Liu, Ge Jin, Qian Xu, Qing Jiao, Li-Hua Wang, Li-Bo Zou
Xanthoceraside, a novel triterpenoid saponin extracted from the husks of Xanthoceras sorbifolia Bunge, has neuroprotective effects in vivo and anti-inflammatory properties in vitro. However, the exact mechanism of xanthoceraside on anti-amyloid beta (Aβ)-induced neuroinflammatory responses has not been elucidated. Therefore, we used intracerebroventricular injection of amyloid 1-42 (Aβ1-42) to establish a mouse model to test the effects of xanthoceraside on Aβ-induced cognitive impairments and the TLR2/NF-κB and MAPK pathways...
December 8, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29229355/effects-of-biflavonoids-from-garcinia-madruno-on-a-triple-transgenic-mouse-model-of-alzheimer-s-disease
#10
Angélica Maria Sabogal-Guáqueta, Luis Carrillo-Hormaza, Edison Osorio, Gloria Patricia Cardona-Gómez
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that is pathologically characterized by the deposition of β-amyloid (βA) peptides in senile plaques and neurofibrillary tangles in the brain. Flavonoids have recently been used to prevent and treat a variety of neurodegenerative diseases, but little is known about bioflavonoids. In this study, we evaluate whether a biflavonoid fraction (BF) exerts neuroprotective effects on an aged triple transgenic mouse mode of AD (3xTg-AD). Then, 21-24-month-old 3xTg AD mice were i...
December 8, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29229321/the-role-of-aspirin-heparin-and-other-interventions-in-the-prevention-and-treatment-of-fetal-growth-restriction
#11
REVIEW
Katie M Groom, Anna L David
Fetal growth restriction and related placental pathologies such as preeclampsia, stillbirth, and placental abruption are believed to arise in early pregnancy when inadequate remodeling of the maternal spiral arteries leads to persistent high-resistance and low-flow uteroplacental circulation. The consequent placental ischaemia, reperfusion injury, and oxidative stress are associated with an imbalance in angiogenic/antiangiogenic factors. Many interventions have centered on the prevention and/or treatment of preeclampsia with results pertaining to fetal growth restriction and small-for-gestational-age pregnancy often included as secondary outcomes because of the common pathophysiology...
December 8, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29228691/berberine-attenuated-pro-inflammatory-factors-and-protect-against-neuronal-damage-via-triggering-oligodendrocyte-autophagy-in-spinal-cord-injury
#12
Hongyu Wang, Chang Liu, Xifan Mei, Yang Cao, Zhanpeng Guo, Yajiang Yuan, Ziming Zhao, Changwei Song, Yue Guo, Zhaoliang Shen
Berberine exerts neuroprotective effect in neuroinflammation and neurodegeneration disease. However, berberine effect in acute spinal cord injury is yet to be elucidated. Herein, we investigated the neuroprotective effect of berberine in spinal cord injury (SCI). Sprague-Dawley rats were subjected to SCI by an intraperitoneal injection of berberine post-injury. The neurobehavioral recovery, cytokines of pro-inflammatory factors (TNF-α and IL-1β), autophagy-related proteins (LC3B, ATG16L, ATG7), and apoptosis-related protein cleaved caspase-3 were determined...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228667/metformin-ameliorates-sepsis-induced-brain-injury-by-inhibiting-apoptosis-oxidative-stress-and-neuroinflammation-via-the-pi3k-akt-signaling-pathway
#13
Guangming Tang, Huiyun Yang, Jing Chen, Mengrao Shi, Lingqing Ge, Xuhua Ge, Guoji Zhu
Sepsis-induced brain injuries increase mortality, morbidity, cognitive impairment and lack of effective therapeutic treatment. Previous studies have suggested that metformin provides neuroprotective effects against ischemia, brain trauma and other brain damage, but whether metformin protects a septic brain remains unknown. Thus, the aim of this study is to investigate the possible effects and the mechanism of metformin against septic brain damage using the cecal ligation and puncture (CLP) model. Mice were randomly divided into five groups: the Sham group, CLP group, CLP+ Met group, CLP+ vehicle group and CLP+ Met+ LY group...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228252/retinal-reflectivity-measurement-for-cone-impairment-estimation-and-visual-assessment-after-diabetic-macular-edema-resolution-recover-dme
#14
Benjamin Guyon, Emeric Elphege, Mathieu Flores, Anne-Sophie Gauthier, Bernard Delbosc, Maher Saleh
Purpose: Photoreceptor loss has been suspected of being involved in incomplete visual recovery after diabetic macular edema (DME) resolution. Recent studies have shown that cone density in the perifoveal area could be estimated by in vivo measurements of the outer retinal reflectivity on optical coherence tomography (OCT). The main objective of this study was to assess the photoreceptor layer reflectivity after DME resolution and to determine its relationship with final visual acuity (VA)...
December 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29228214/oestrogen-receptor-%C3%AE-ligand-acts-on-cd11c-cells-to-mediate-protection-in-experimental-autoimmune-encephalomyelitis
#15
Roy Y Kim, Darian Mangu, Alexandria S Hoffman, Rojan Kovash, Eunice Jung, Noriko Itoh, Rhonda Voskuhl
Oestrogen treatments are neuroprotective in a variety of neurodegenerative disease models. Selective oestrogen receptor modifiers are needed to optimize beneficial effects while minimizing adverse effects to achieve neuroprotection in chronic diseases. Oestrogen receptor beta (ERβ) ligands are potential candidates. In the multiple sclerosis model chronic experimental autoimmune encephalomyelitis, ERβ-ligand treatment is neuroprotective, but mechanisms underlying this neuroprotection remain unclear. Specifically, whether there are direct effects of ERβ-ligand on CD11c+ microglia, myeloid dendritic cells or macrophages in vivo during disease is unknown...
December 8, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29227981/gamma-secretase-inhibitors-attenuate-neurotrauma-and-neurogenic-acute-lung-injury-in-rats-by-rescuing-the-accumulation-of-hypertrophic-microglia
#16
Hung-Jung Lin, Chien-Chin Hsu, Chung-Ching Chio, Yu-Feng Tian, Mao-Tsun Lin, Ting-Wei Lin, Chih-Hsien Chang, Ching-Ping Chang
BACKGROUND/AIMS: In response to traumatic brain injury (TBI), activated microglia exhibit changes in their morphology from the resting ramified phenotype toward the activated hypertrophic or amoeboid phenotype. Here, we provide the first description of the mechanism underlying the neuroprotective effects of γ-secretase inhibitors on TBI outcomes in rats. METHODS: The neuroprotective effects of γ-secretase inhibitors such as LY411575 or CHF5074 on TBI-induced neurotoxicity were analysed using a neurological motor function evaluation, cerebral contusion assay, immunohistochemical staining for microglia phenotypes, lung injury score and Evans Blue dye extravasation assay of brain and lung oedema...
December 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29227284/cografting-astrocytes-improves-cell-therapeutic-outcomes-in-a-parkinson-s-disease-model
#17
Jae-Jin Song, Sang-Min Oh, Oh-Chan Kwon, Noviana Wulnansari, Hyun-Seob Lee, Mi-Yoon Chang, Eunsoo Lee, Woong Sun, Sang-Eun Lee, Sunghoe Chang, Heeyoung An, C Justin Lee, Sang-Hun Lee
Transplantation of neural progenitor cells (NPCs) is a potential therapy for treating neurodegenerative disorders, but this approach has faced many challenges and limited success, primarily because of inhospitable host brain environments that interfere with enriched neuron engraftment and function. Astrocytes play neurotrophic roles in the developing and adult brain, making them potential candidates for helping with modification of hostile brain environments. In this study, we examined whether astrocytic function could be utilized to overcome the current limitations of cell-based therapies in a murine model of Parkinson's disease (PD) that is characterized by dopamine (DA) neuron degeneration in the midbrain...
December 11, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29226728/the-efficacy-and-safety-of-riluzole-for-neurodegenerative-movement-disorders-a-systematic-review-with-meta-analysis
#18
Jia Liu, Lu-Ning Wang
Neurodegenerative movement disorders mainly include Parkinson's disease, atypical parkinsonisms, Huntington disease, and hereditary ataxia. Riluzole is the only drug approved by the US Food and Drug Administration for amyotrophic lateral sclerosis. The neuroprotective effects of riluzole have been observed in experimental models of neurodegenerative movement disorders. In this paper, we aimed to systematically analyze the efficacy and safety of riluzole for patients with neurodegenerative movement disorder...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29225974/modulation-effects-of-cordycepin-on-voltage-gated-sodium-channels-in-rat-hippocampal-ca1-pyramidal-neurons-in-the-presence-absence-of-oxygen
#19
Zhi-Bin Liu, Chao Liu, Bin Zeng, Li-Ping Huang, Li-Hua Yao
Our previous study revealed that cordycepin features important neuroprotective effects against hypoxic insult by improvement of neuronal electrophysiological function. Modulation on voltage-gated sodium channel (VGSC) in CA1 neurons is the initial event during hypoxia/ischemia. However, no study comprehensively investigated cordycepin on VGSC. Hence, this study investigated modulation effects of cordycepin on VGSC not only in oxygen physiological conditions but also in acute oxygen deprivation injury conditions...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/29225568/age-dependent-subunit-specific-action-of-hydrogen-sulfide-on-glun1-2a-and-glun1-2b-nmda-receptors
#20
Aleksey V Yakovlev, Evgeniya D Kurmasheva, Yevheniia Ishchenko, Rashid Giniatullin, Guzel F Sitdikova
Hydrogen sulfide (H2S) is an endogenously produced neuroactive gas implicated in many key processes in the peripheral and central nervous system. Whereas the neuroprotective role of H2S has been shown in adult brain, the action of this messenger in newborns remains unclear. One of the known targets of H2S in the nervous system is the N-methyl-D-aspartate (NMDA) glutamate receptor which can be composed of different subunits with distinct functional properties. In the present study, using patch clamp technique, we compared the effects of the H2S donor sodium hydrosulfide (NaHS, 100 μM) on hippocampal NMDA receptor mediated currents in rats of the first and third postnatal weeks...
2017: Frontiers in Cellular Neuroscience
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