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https://www.readbyqxmd.com/read/28107387/neuronal-cell-death-and-degeneration-through-increased-nitroxidative-stress-and-tau-phosphorylation-in-hiv-1-transgenic-rats
#1
Young-Eun Cho, Myoung-Hwa Lee, Byoung-Joon Song
The underlying mechanisms for increased neurodegeneration and neurocognitive deficits in HIV-infected people are unclear. Therefore, this study was aimed to investigate the mechanisms of increased neurodegeneration in 5-month old male HIV-1 Transgenic (Tg) rats compared to the age- and gender-matched wild-type (WT) by evaluating histological changes and biochemical parameters of the key proteins involved in the cell death signaling and apoptosis. Histological and immunohistochemical analyses revealed decreased neuronal cells with elevated astrogliosis in HIV-1 Tg rats compared to WT...
2017: PloS One
https://www.readbyqxmd.com/read/28089729/urinary-biomarkers-in-women-with-refractory-urgency-urinary-incontinence-randomized-to-sacral-neuromodulation-versus-onabotulinumtoxina-compared-to-controls
#2
Holly E Richter, Pamela Moalli, Cindy L Amundsen, Anna P Malykhina, Dennis Wallace, Rebecca Rogers, Deborah Myers, Maria Paraiso, Michael Albo, Haolin Shi, Tracy Nolen, Susie Meikle, R Ann Word
PURPOSE: To measure urinary biomarker levels in women with refractory urgency urinary incontinence (UUI) and controls at baseline and 6 months post treatment from sacral neuromodulation (SNM) or intradetrusor injection onabotulinumtoxinA and to assess association of baseline biomarkers to post treatment UUI episodes (UUIE) and overactive bladder (OAB) symptom bother outcomes. MATERIALS AND METHODS: First morning urines were collected from consented trial participants and age-matched women without UUI...
January 13, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28086917/resveratrol-regulates-neuro-inflammation-and-induces-adaptive-immunity-in-alzheimer-s-disease
#3
Charbel Moussa, Michaeline Hebron, Xu Huang, Jaeil Ahn, Robert A Rissman, Paul S Aisen, R Scott Turner
BACKGROUND: Treatment of mild-moderate Alzheimer's disease (AD) subjects (N = 119) for 52 weeks with the SIRT1 activator resveratrol (up to 1 g by mouth twice daily) attenuates progressive declines in CSF Aβ40 levels and activities of daily living (ADL) scores. METHODS: For this retrospective study, we examined banked CSF and plasma samples from a subset of AD subjects with CSF Aβ42 <600 ng/ml (biomarker-confirmed AD) at baseline (N = 19 resveratrol-treated and N = 19 placebo-treated)...
January 3, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28081460/blood-brain-barrier-dysfunction-induced-by-silica-nps-in%C3%A2-vitro-and-in%C3%A2-vivo-involvement-of-oxidative-stress-and-rho-kinase-jnk-signaling-pathways
#4
Xin Liu, Baiyan Sui, Jiao Sun
Silica nanoparticles (SiO2-NPs) has been extensively exploited in biomedical fields and mostly designed to enter the circulatory system, however, few studies focused on the potential adverse effects of SiO2-NPs exposure on the blood-brain barrier (BBB) that serves as a critical barrier between the central nervous system (CNS) and the peripheral circulation. This study attempts to provide an understanding of whether and how SiO2-NPs disrupts the BBB in vitro and in vivo. Through a human BBB model, we found that SiO2-NPs could induce tight junction loss and cytoskeleton arrangement, and increase inflammatory response and the release of vascular endothelial growth factor (VEGF) of brain microvessel endothelial cells (BMECs), which further activates astrocytes to amplify the generation of VEGF and increase the aquaporin-4 expression, and thus causing BBB disruption through a complex immunoregulatory loop between BMECs and astrocytes under SiO2-NPs exposure...
March 2017: Biomaterials
https://www.readbyqxmd.com/read/28078802/evaluation-of-pva-biodegradable-electric-conductive-membranes-for-nerve-regeneration-in-axonotmesis-injuries-the-rat-sciatic-nerve-animal-model
#5
J Ribeiro, A R Caseiro, T Pereira, Pas Armada-da-Silva, I Pires, J Prada, I Amorim, I Leal Reis, S Amado, J D Santos, S Bompasso, S Raimondo, Asp Varejão, S Geuna, A L Luís, A C Maurício
The therapeutic effect of three polyvinyl alcohol (PVA) membranes loaded with electrically conductive materials - carbon nanotubes (PVA-CNTs) and polypyrrole (PVA-PPy) - were tested in vivo for neuro-muscular regeneration after an axonotmesis injury in the rat sciatic nerve. The membranes electrical conductivity measured was 1.5±0.5x10(-6) S/m, 579±0.6x10(-6) S/m, and 1837.5±0.7 x10(-6) S/m, respectively. At week-12, a residual motor and nociceptive deficit were present in all treated groups, but at week-12, a better recovery to normal gait pattern of the PVA-CNTs and PVA-PPy treated groups was observed...
January 12, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28059131/dioscin-relieves-endotoxemia-induced-acute-neuro-inflammation-and-protect-neurogenesis-via-improving-5-ht-metabolism
#6
Rui Yang, Wei Chen, Ye Lu, Yingke Li, Hongli Du, Songyan Gao, Xin Dong, Hongbin Yuan
Sepsis, in addition to causing fatality, is an independent risk factor for cognitive impairment among sepsis survivors. The pathologic mechanism of endotoxemia induced acute neuro-inflammation still has not been fully understood. For the first time, we found the disruption of neurotransmitters 5-HT, impaired neurogenesis and activation of astrocytes coupled with concomitant neuro-inflammation were the potential pathogenesis of endotoxemia induced acute neuro-inflammation in sepsis survivors. In addition, dioscin a natural steroidal saponin isolated from Chinese medicinal herbs, enhanced the serotonergic system and produced anti-depressant effect by enhancing 5-HT levels in hippocampus...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28058465/fish-oil-supplementation-attenuates-neuroinflammation-and-alleviates-depressive-like-behavior-in-rats-submitted-to-repeated-lipopolysaccharide
#7
Ruili Dang, Xueyuan Zhou, Mimi Tang, Pengfei Xu, Xiaoxue Gong, Yuanyuan Liu, Hongxiao Jiao, Pei Jiang
PURPOSE: Depression is frequently associated with inflammation, whereas omega-3 polyunsaturated fatty acids (PUFAs) primarily found in fish oil possess anti-inflammatory properties. Although converging studies suggest an antidepressant effect of PUFAs, there is limited evidence directly linking the neuro-immune modulating features of PUFAs to the antidepressant actions. METHODS: Therefore, we assessed the effects of fish oil (FO) supplementation on behavioral changes, inflammatory cytokine expression and oxidative reactions in frontal cortex and hippocampus of rats following repeated peripheral immune challenge by lipopolysaccharide (LPS) for 2 weeks (500 μg/kg every other day)...
January 5, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28053821/microrna-181c-exacerbates-brain-injury-in-acute-ischemic-stroke
#8
Qingfeng Ma, Haiping Zhao, Zhen Tao, Rongliang Wang, Ping Liu, Ziping Han, Shubei Ma, Yumin Luo, Jianping Jia
MicroRNA-181 (miR-181) is highly expressed in the brain, and downregulated in miRNA expression profiles of acute ischemic stroke patients. However, the roles of miR-181c in stroke are not known. The clinical relevance of miR-181c in acute stroke patients was evaluated by real-time PCR and correlation analyses. Proliferation and apoptosis of BV2 microglial cells and Neuro-2a cells cultured separately or together under oxidative stress or inflammation were assessed with the Cell Counting Kit-8 and by flow cytometry, respectively...
December 2016: Aging and Disease
https://www.readbyqxmd.com/read/28044308/expression-of-monomeric-c-reactive-protein-in-infarcted-brain-tissue-from-patients-with-alzheimer-s-disease
#9
Mark Slevin, Donghui Liu, Glenn Ferris, Malik Al-Hsinawi, Raid Al-Baradie, Jerzy Krupinski
OBJECTIVE: We have previously shown that monomeric-C-reactive protein is deposited in significant quantities within the brain parenchyma after stroke. Since we have recently identified a possible role of this protein in supporting neurodegeneration and aberrant vascular development we identified a small group of post-mortem brain samples from individuals who had Alzheimer's disease and evidence of tissue infarction/ micro-infarction on histological examination. MATERIAL AND METHOD: We used immunohistochemistry staining to identify the monomeric-C-reactive protein expressed in the infarcted brain tissues...
2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28039160/%C3%A2-potential-roles-of-enteric-glia-in-bridging-neuro-immune-communication-in-the-gut
#10
Aaron K Chow, Brian David Gulbransen
The enteric nervous system (ENS) is a network of neurons and glia that controls ongoing gastrointestinal (GI) functions. Damage or injury to the ENS can lead to functional GI disorders. Current data support the conclusion that many functional GI disorders are caused by an imbalance between gut microbes and the immune system but how the ENS is involved in these interactions is less understood. Due to the proximity of the ENS to bacteria and other foreign antigens present in the GI tract, it is important to prevent the passage of these antigens through the GI epithelium...
December 30, 2016: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28032988/neuroprotective-effect-of-slm-a-novel-carbazole-based-fluorophore-on-sh-sy5y-cell-model-and-3xtg-ad-mouse-model-of-alzheimer-s-disease
#11
Xiaoli Wu, Jayasankar Kosaraju, Wei Zhou, Kin Yip Tam
Amyloid β (Aβ) peptide aggregating to form a neurotoxic plaque, leading to cognitive deficits, is believed to be one of the plausible mechanisms for Alzheimer's disease (AD). Inhibiting Aβ aggregation is supposed to offer a neuroprotective effect to ameliorate AD. A previous report has shown that SLM, a carbazole-based fluorophore, binds to Aβ to inhibit the aggregation. However, it is not entirely clear whether the inhibition of Aβ aggregation alone would lead to the anticipated neuroprotective effects...
December 29, 2016: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28017945/-pathological-state-or-cause-of-sarcopenia
#12
Yasumoto Matsui
Skeletal muscle atrophy by aging(Sarcopenia)is more likely to occur in lower limbs rather than upper ones, and in the thigh rather than in the lower leg, and in the anterior side of thigh rather than posterior, faster in men than in women. It differs from disuse muscle atrophy in that it occurs slowly and gradually, hard to be recovered, or fast twitch fibers are mainly involved. Many factors or phenomena are known to contribute to proceed sarcopenia. In the aged skeletal muscle tissue, the number of satellite cells or motor neurons decrease and the function of the neuro-muscular junction declines...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28012949/cannabidiol-reduces-brain-damage-and-improves-functional-recovery-in-a-neonatal-rat-model-of-arterial-ischemic-stroke
#13
Maria Ceprián, Laura Jiménez-Sánchez, Carlos Vargas, Lorena Barata, Will Hind, Jose Martínez-Orgado
BACKGROUND: and purpose: Currently there is no effective treatment for neonatal arterial ischemic stroke (AIS). Cannabidiol (CBD) is neuroprotective in models of newborn hypoxic-ischemic brain damage and adult stroke. The purpose of this work was to study the protective effect of CBD in a neonatal rat model of AIS. METHODS: Middle Cerebral Artery Occlusion (MCAO) was achieved in neonatal Wistar rats by introducing a nylon filament to the left MCA for 3 h; 15 min after removing the occluder vehicle (MCAO-V) or CBD single dose 5 mg/kg (MCAO-C) were administered i...
December 21, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/28012923/anti-inflammatory-effects-of-ethanolic-extract-of-rosmarinus-officinalis-l-and-rosmarinic-acid-in-a-rat-model-of-neuropathic-pain
#14
Mahboobeh Ghasemzadeh Rahbardar, Bahareh Amin, Soghra Mehri, Seyed Javad Mirnajafi-Zadeh, Hossein Hosseinzadeh
BACKGROUND: Rosemary, Rosmarinus (R.) officinalis L. is a well-known plant with several useful properties such as analgesic, anti-inflammatory and anti-neurodegenerative. It has been used in folk medicine to alleviate rheumatic pain, stomachache and dysmenorrhea. Rosemary has several constituents such as rosmarinic acid which can be responsible for therapeutic properties been noted with rosemary. The aim of this study was to investigate the potential anti-inflammatory effects of R. officinalis and rosmarinic acid in a rat model of sciatic nerve chronic constriction injury (CCI)-induced neuropathic pain to verify usage of rosemary in folk medicine...
December 22, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28009062/cytokine-therapy-mediated-neuroprotection-in-a-friedreich-s-ataxia-mouse-model
#15
Kevin C Kemp, Nadia Cerminara, Kelly Hares, Juliana Redondo, Amelia J Cook, Harry R Haynes, Bronwen R Burton, Mark Pook, Richard Apps, Neil J Scolding, Alastair Wilkins
OBJECTIVES: Friedreich's ataxia is a devastating neurological disease currently lacking any proven treatment. We studied the neuro-protective effects of the cytokines granulocyte-colony stimulating factor and stem cell factor in a humanised murine model of Friedreich's ataxia. METHODS: Mice received monthly subcutaneous infusions of cytokines while also being assessed at monthly time points using an extensive range of behavioural motor performance tests. After 6 months of treatment, neurophysiological evaluation of both sensory and motor nerve conduction was performed...
December 23, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/28006716/biomolecular-aspects-of-depression-a-retrospective-analysis
#16
Brandon N Peacock, David J Scheiderer, Gottfried H Kellermann
OBJECTIVE: The effects of psychological stress, oxidative stress, and chronic low grade inflammation on the neuro-immune connection have been implicated in the pathogenesis of depression. Thus, in the recent past, there has been a growing effort in determining the mechanism of this pathogenesis. While attempting to map out, this mechanism researchers and clinicians have searched for clinically relevant biomarkers for use in the diagnosis and for the assessment of those suffering from depression...
November 10, 2016: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/27997503/dose-dependent-nerve-inflammatory-response-to-rhbmp-2-in-a-rodent-spinal-nerve-model
#17
Z Q G Liau, R W Lam, T M Hu, H K Wong
STUDY DESIGN: We developed a spinal nerve root wrapping rodent model to evaluate the relationship between recombinant human bone morphogenetic protein 2 (rhBMP-2) dosage and the degree of inflammation. OBJECTIVE: To investigate the direct effects of recombinant human bone morphogenetic protein 2 (rhBMP-2) dosage and the degree of inflammation in rodent spinal nerve roots. SUMMARY OF BACKGROUND DATA: rhBMP-2 is commonly used in clinical practice to augment spinal fusion...
December 16, 2016: Spine
https://www.readbyqxmd.com/read/27988872/insulin-resistance-and-neurodegeneration-progress-towards-the-development-of-new-therapeutics-for-alzheimer-s-disease
#18
REVIEW
Suzanne M de la Monte
Alzheimer's disease (AD) should be regarded as a degenerative metabolic disease caused by brain insulin resistance and deficiency, and overlapping with the molecular, biochemical, pathophysiological, and metabolic dysfunctions in diabetes mellitus, non-alcoholic fatty liver disease, and metabolic syndrome. Although most of the diagnostic and therapeutic approaches over the past several decades have focused on amyloid-beta (Aβ42) and aberrantly phosphorylated tau, which could be caused by consequences of brain insulin resistance, the broader array of pathologies including white matter atrophy with loss of myelinated fibrils and leukoaraiosis, non-Aβ42 microvascular disease, dysregulated lipid metabolism, mitochondrial dysfunction, astrocytic gliosis, neuro-inflammation, and loss of synapses vis-à-vis growth of dystrophic neurites, is not readily accounted for by Aβ42 accumulations, but could be explained by dysregulated insulin/IGF-1 signaling with attendant impairments in signal transduction and gene expression...
December 17, 2016: Drugs
https://www.readbyqxmd.com/read/27987368/postnatal-systemic-inflammation-and-neuro-ophthalmologic-dysfunctions-in-extremely-low-gestational-age-children
#19
Mari Holm, Dordi Austeng, Raina N Fichorova, Elizabeth N Allred, Karl C K Kuban, T Michael O'Shea, Olaf Dammann, Alan Leviton
AIM: Compared to infants born at term, children born very preterm are at increased risk of visual dysfunctions, and neonatal systemic inflammation. Here we explore if these two propensities are related. METHODS: As part of the ELGAN study, the concentrations of 16 mediators of inflammation were measured in blood obtained on postnatal days 1, 7, 14, 21 and 28 from 1062 children born before the 28(th) week of gestation. Presence of visual field deficit, strabismus, and/or impaired visual fixation was recorded at age two...
December 17, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/27980107/niclosamide-inhibits-oxaliplatin-neurotoxicity-while-improving-colorectal-cancer-therapeutic-response
#20
Olivier Cerles, Evelyne Benoit, Christiane Chéreau, Sandrine Chouzenoux, Florence Morin, Marie-Anne Guillaumot, Romain Coriat, Niloufar Kavian, Thomas Loussier, Pietro Santulli, Louis Marcellin, Nathaniel E B Saidu, Bernard Weill, Frederic Batteux, Carole Nicco
Neuropathic pain is a limiting-factor of platinum-based chemotherapies. We sought to investigate the neuroprotective potential of niclosamide in peripheral neuropathies induced by oxaliplatin. Normal neuron-like and cancer cells were treated in vitro with oxaliplatin associated or not with an inhibitor of STAT3 and NF-кB, niclosamide. Cell production of reactive oxygen species and viability were measured by 2',7'-dichlorodihydrofluorescein diacetate and crystal violet. Peripheral neuropathies were induced in mice by oxaliplatin with or without niclosamide...
December 15, 2016: Molecular Cancer Therapeutics
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