keyword
MENU ▼
Read by QxMD icon Read
search

Oxidative stress ,stroke

keyword
https://www.readbyqxmd.com/read/28736792/double-injected-human-stem-cells-enhance-rehabilitation-in-tbi-mice-via-modulation-of-survival-and-inflammation
#1
Chul Kim, Ji-Min Park, TaeHo Kong, Seungmin Lee, Ki-Weon Seo, Yuri Choi, Young Sook Song, Jisook Moon
Traumatic brain injury (TBI), a complicated form of brain damage, is a major cause of mortality in adults. Following mechanical and structural primary insults, a battery of secondary insults, including neurotransmitter-mediated cytotoxicity, dysregulation of calcium and macromolecule homeostasis, and increased oxidative stress, exacerbate brain injury and functional deficits. Although stem cell therapy is considered to be an alternative treatment for brain injuries, such as TBI and stroke, many obstacles remain...
July 24, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28735838/cardiovascular-effects-of-air-pollution
#2
REVIEW
Thomas Bourdrel, Marie-Abèle Bind, Yannick Béjot, Olivier Morel, Jean-François Argacha
Air pollution is composed of particulate matter (PM) and gaseous pollutants, such as nitrogen dioxide and ozone. PM is classified according to size into coarse particles (PM10), fine particles (PM2.5) and ultrafine particles. We aim to provide an original review of the scientific evidence from epidemiological and experimental studies examining the cardiovascular effects of outdoor air pollution. Pooled epidemiological studies reported that a 10μg/m(3) increase in long-term exposure to PM2.5 was associated with an 11% increase in cardiovascular mortality...
July 20, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28733904/polyamines-therapeutic-perspectives-in-oxidative-stress-and-inflammatory-diseases
#3
REVIEW
Tarique Hussain, Bie Tan, Wenkai Ren, Najma Rahu, Rahim Dad, Dildar Hussain Kalhoro, Yulong Yin
Polyamines are naturally occurring aliphatic compounds, particularly essential elements for biological functions. These compounds play a central role in regulating molecular pathways which are responsible for cellular proliferation, growth, and differentiation. Importantly, excessive polyamine catabolism can lead to a prominent source of oxidative stress which increases inflammatory response and thought to be involved in several diseases including stroke, renal failure, neurological disease, liver disease, and even cancer...
July 21, 2017: Amino Acids
https://www.readbyqxmd.com/read/28732504/ischaemic-stroke-and-the-recanalization-drug-tissue-plasminogen-activator-interfere-with-antibacterial-phagocyte-function
#4
Antje Vogelgesang, Claudia Lange, Lara Blümke, Georg Laage, Sarah Rümpel, Sönke Langner, Barbara M Bröker, Alexander Dressel, Johanna Ruhnau
BACKGROUND: Stroke induces immune alterations such as impaired oxidative burst and reduced release of neutrophil extracellular traps (NETs). We hypothesised that key enzymes of these defence mechanisms may be altered in ischaemic stroke. Therefore, we analysed the intra- and extracellular amounts of myeloperoxidase (MPO) and neutrophil elastase (NE) in patient sera and granulocytes and monocytes. Because the autonomous nervous system is thought to mediate stroke-induced immune alterations, we also studied the influence of stress hormones and acetylcholine on MPO and NE...
July 21, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28721154/obesity-and-inflammation-the-linking-mechanism-and-the-complications
#5
Mohammed S Ellulu, Ismail Patimah, Huzwah Khaza'ai, Asmah Rahmat, Yehia Abed
Obesity is the accumulation of abnormal or excessive fat that may interfere with the maintenance of an optimal state of health. The excess of macronutrients in the adipose tissues stimulates them to release inflammatory mediators such as tumor necrosis factor α and interleukin 6, and reduces production of adiponectin, predisposing to a pro-inflammatory state and oxidative stress. The increased level of interleukin 6 stimulates the liver to synthesize and secrete C-reactive protein. As a risk factor, inflammation is an imbedded mechanism of developed cardiovascular diseases including coagulation, atherosclerosis, metabolic syndrome, insulin resistance, and diabetes mellitus...
June 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28707073/protective-effects-of-spatholobi-caulis-extract-on-neuronal-damage-and-focal-ischemic-stroke-reperfusion-injury
#6
Hee Ra Park, Heeeun Lee, Jung-Jin Lee, Nam-Hui Yim, Min-Jung Gu, Jin Yeul Ma
Neuronal apoptotic cell death plays an important role in many neurological disorders, including Alzheimer's disease, Parkinson's disease, and ischemic stroke. Spatholobi Caulis (SC) has been widely used in traditional herbal medicine for the treatment of cancer, inflammation, viral infection, and anemia. However, the protective effects of SC extract (SCE) against apoptotic cell death in the brain have not been reported. We investigated the protective effects of SCE against neuronal injury etoposide-induced neurotoxicity and in rats subjected to focal transient ischemic stroke middle cerebral artery occlusion (MCAO) for 45 min, followed by 7 days of reperfusion...
July 13, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28698499/molecular-mechanisms-behind-free-radical-scavengers-function-against-oxidative-stress
#7
REVIEW
Fereshteh Ahmadinejad, Simon Geir Møller, Morteza Hashemzadeh-Chaleshtori, Gholamreza Bidkhori, Mohammad-Saeid Jami
Accumulating evidence shows that oxidative stress is involved in a wide variety of human diseases: rheumatoid arthritis, Alzheimer's disease, Parkinson's disease, cancers, etc. Here, we discuss the significance of oxidative conditions in different disease, with the focus on neurodegenerative disease including Parkinson's disease, which is mainly caused by oxidative stress. Reactive oxygen and nitrogen species (ROS and RNS, respectively), collectively known as RONS, are produced by cellular enzymes such as myeloperoxidase, NADPH-oxidase (nicotinamide adenine dinucleotide phosphate-oxidase) and nitric oxide synthase (NOS)...
July 10, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28693689/neuroprotective-effects-of-grape-seed-procyanidin-extract-on-ischemia-reperfusion-brain-injury-%C3%A2
#8
Kong Xiangyi, Guan Jian, Gong Shun, Wang Renzhi
<strong>Objective</strong> Oxidative stress (OS) plays a crucial role in ischemic stroke. Grape seed procyanidin extract (GSPE) was reported to be a critical regulator of OS. We hypothesized that GSPE might also be protective in ischemia-reperfusion brain injury. This study aimed to explore whether GSPE administration can protect mice from ischemia-reperfusion brain injury.<strong>Methods</strong> Transient middle cerebral artery occlusion (MCAO) was conducted followed by reperfusion for 24 hours to make ischemia-reperfusion brain injury in mice that received GSPE (MCAOG, n=60) or normal saline (MCAONS, n=60)...
June 10, 2017: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
https://www.readbyqxmd.com/read/28690033/schisantherin-a-attenuates-ischemia-reperfusion-induced-neuronal-injury-in-rats-via-regulation-of-tlr4-and-c5ar1-signaling-pathways
#9
Yun Wei Shi, Xiao Chuan Zhang, Chen Chen, Miao Tang, Zhi Wei Wang, Xin Miao Liang, Fei Ding, Cai Ping Wang
Toll-like receptor 4 (TLR4) and C5aR1 (CD88) have been recognized as potential therapeutic targets for the reduction of inflammation and secondary damage and improvement of outcome after ischemia and reperfusion (I/R). The inflammatory responses which induce cell apoptosis and necrosis after I/R brain injury lead to a limited process of neural repair. To further comprehend how these targets function in I/R state, we investigated the pathological changes and TLR4 and C5aR1 signaling pathways in vitro and in vivo models of I/R brain injury in this study...
July 6, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28685617/aerobic-exercise-prevents-rarefaction-of-pial-collaterals-and-increased-stroke-severity-that-occur-with-aging
#10
Wojciech Rzechorzek, Hua Zhang, Brian K Buckley, Kunjie Hua, Daniel Pomp, James E Faber
Variation in extent of the brain's collateral circulation is an important determinant of variation in the severity of stroke and efficacy of revascularization therapies. However, the number and diameter of pial collateral "arterioles" decrease with aging in associated with reduced eNOS and increased oxidative stress. We tested whether exercise reduces this aging-induced rarefaction. Twelve-month-old mice were randomized to sedentary or voluntary wheel-running. At 26 months' age, permanent MCA occlusion was followed 72 h later by determination of infarct volume and vascular casting after maximal dilation...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28680530/mir-let7a-controls-the-cell-death-and-tight-junction-density-of-brain-endothelial-cells-under-high-glucose-condition
#11
Juhyun Song, So Ra Yoon, Oh Yoen Kim
Hyperglycemia-induced stress in the brain of patients with diabetes triggers the disruption of blood-brain barrier (BBB), leading to diverse neurological diseases including stroke and dementia. Recently, the role of microRNA becomes an interest in the research for deciphering the mechanism of brain endothelial cell damage under hyperglycemia. Therefore, we investigated whether mircoRNA Let7A (miR-Let7A) controls the damage of brain endothelial (bEnd.3) cells against high glucose condition. Cell viability, cell death marker expressions (p-53, Bax, and cleaved poly ADP-ribose polymerase), the loss of tight junction proteins (ZO-1 and claudin-5), proinflammatory response (interleukin-6, tumor necrosis factor-α), inducible nitric oxide synthase, and nitrite production were confirmed using MTT, reverse transcription-PCR, quantitative-PCR, Western blotting, immunofluorescence, and Griess reagent assay...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28674991/cell-death-mechanisms-of-neurodegeneration
#12
Jing Fan, Ted M Dawson, Valina L Dawson
There are common mechanisms shared by genetically or pathologically distinct neurodegenerative diseases, such as excitotoxicity, mitochondrial deficits and oxidative stress, protein misfolding and translational dysfunction, autophagy and microglia activation. This indicates that although the original cause may differ in individual diseases or even subtypes of certain disorders, these disrupted common cell functions and signaling, together with aging, may lead to final execution of cell death through similar pathways...
2017: Advances in Neurobiology
https://www.readbyqxmd.com/read/28668949/naringin-reverses-neurobehavioral-and-biochemical-alterations-in-intracerebroventricular-collagenase-induced-intracerebral-hemorrhage-in-rats
#13
Navdeep Singh, Yashika Bansal, Ranjana Bhandari, Lovish Marwaha, Raghunath Singh, Kanwaljit Chopra, Anurag Kuhad
Intracerebral hemorrhage (ICH) contributes to 10-15% of all strokes and is a high risk factor for morbidity and mortality as compared to other subtypes of stroke, that is, cerebral ischemia and subarachnoid hemorrhage. Oxidative stress (OS)-induced neuroinflammation and neuronal cell death contribute towards the hallmarks of ICH. Spared antioxidant levels, increased inflammatory cytokines and free radicals in ICH lead to neuronal death and exaggerate the hallmarks of ICH. Intracerebroventricular (ICV) collagenase (COL-induced neuronal cell damage and cognitive deficits form a widely recognized experimental model for ICH...
July 1, 2017: Pharmacology
https://www.readbyqxmd.com/read/28667067/oxidative-and-inflammatory-signals-in-obesity-associated-vascular-abnormalities
#14
REVIEW
John J Reho, Kamal Rahmouni
Obesity is associated with increased cardiovascular morbidity and mortality in part due to vascular abnormalities such as endothelial dysfunction and arterial stiffening. The hypertension and other health complications that arise from these vascular defects increase the risk of heart diseases and stroke. Prooxidant and proinflammatory signaling pathways as well as adipocyte-derived factors have emerged as critical mediators of obesity-associated vascular abnormalities. Designing treatments aimed specifically at improving the vascular dysfunction caused by obesity may provide an effective therapeutic approach to prevent the cardiovascular sequelae associated with excessive adiposity...
July 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28664399/metformin-attenuates-neurological-deficit-after-intracerebral-hemorrhage-by-inhibiting-apoptosis-oxidative-stress-and-neuroinflammation-in-rats
#15
Boxiang Qi, Libao Hu, Lei Zhu, Lei Shang, Xuecheng Wang, Na Liu, Nana Wen, Yao Hong, Daihua Fang
Intracerebral hemorrhage (ICH) can lead to brain damage and even death, and there is lack of effective therapeutic methods for treating ICH. Although recent studies have focused on the administration of metformin in treating stroke, there is no literature to support whether it can be used to treat ICH. Therefore, the aim of this study was to evaluate the possible effects of metformin on ICH and the underlying mechanisms of those effects. An ICH model was established in adult male Sprague-Dawley rats. Rats were randomly divided into three groups: sham group, ICH group, and ICH+metformin group...
June 29, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28663093/heat-stress-induced-neuroinflammation-and-aberration-in-monoamine-levels-in-hypothalamus-are-associated-with-temperature-dysregulation
#16
Nishant Ranjan Chauhan, Medha Kapoor, Laxmi Prabha Singh, Rajinder Kumar Gupta, Ramesh Chand Meena, Rajkumar Tulsawani, Sarita Nanda, Shashi Bala Singh
Heat Stress (HS) induces diverse pathophysiological changes, which include brain ischemia, oxidative stress and neuronal damage. The present study was undertaken with the objective to ascertain whether neuroinflammation in Hypothalamus (HTH) caused under HS affects monoamine levels and hence, its physiological role in thermoregulation. Rats were exposed to HS in a heat simulation environmental chamber (Ambient temperature, Ta=45±0.5°C and Relative Humidity, RH=30±10%) with real-time measurement of core temperature (Tc) and skin temperature (Ts)...
June 27, 2017: Neuroscience
https://www.readbyqxmd.com/read/28656393/emerging-roles-of-sirtuins-in-ischemic-stroke
#17
REVIEW
David T She, Dong-Gyu Jo, Thiruma V Arumugam
Ischemic stroke is one of the leading causes of death worldwide. It is characterized by a sudden disruption of blood flow to the brain causing cell death and damage, which will lead to neurological impairments. In the current state, only one drug is approved to be used in clinical setting and new therapies that confer ischemic neuroprotection are desperately needed. Several targets and pathways have been indicated to be neuroprotective in ischemic stroke, among which the sirtuin family of nicotinamide adenine dinucleotide (NAD(+))-dependent deacetylases has emerged as important modulators of several processes in the normal physiology and pathological conditions such as stroke...
June 27, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28656249/oxidative-stress-regulates-mitogen%C3%A2-activated-protein-kinases-and-c%C3%A2-jun-activation-involved-in-heat-stress-and-lipopolysaccharide%C3%A2-induced-intestinal-epithelial-cell-apoptosis
#18
Yanan Liu, Zhenglian Wang, Weidang Xie, Zhengtao Gu, Qiulin Xu, Lei Su
Heat stress and gut‑derived endotoxinemia are common causes of multiple organ dysfunction syndrome in heat stroke patients. Evidence has demonstrated that cell apoptosis in the small intestine serves an important role in the pathogenesis of heatstroke, which leads to increased intestinal permeability to endotoxin or lipopolysaccharides (LPS) from the gut entering the circulation. However, little is known about the potential underlying mechanisms mediating heat stress combined with LPS‑induced intestinal epithelial cell apoptosis...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28656094/berberine-protects-against-glutamate-induced-oxidative-stress-and-apoptosis-in-pc12-and-n2a-cells
#19
Hamid Reza Sadeghnia, Monireh Kolangikhah, Elham Asadpour, Fatemeh Forouzanfar, Hossein Hosseinzadeh
OBJECTIVES: Neurodegenerative diseases have been associated with glutamatergic dysfunction. Berberine, an isoquinoline alkaloid broadly present in different medicinal herbs, has been reported to have neuroprotective effect. In the present study, the effects of berberine against glutamate-induced oxidative damage and apoptosis were investigated. MATERIALS AND METHODS: The cultured PC12 and N2a cells were pretreated (2 hr) with varying concentrations of berberine (50-1000 µM), followed by exposure to glutamate (10 mM) for 24 hr...
May 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28650095/sex-differences-in-brain-mitochondrial-metabolism-influence-of-endogenous-steroids-and-stroke
#20
REVIEW
P Gaignard, M Fréchou, P Liere, P Thérond, M Schumacher, A Slama, R Guennoun
Steroids are neuroprotective and growing body of evidence indicates that mitochondria are a potential target of their effects. The mitochondria are the site of cellular energy synthesis, regulate oxidative stress and play a key role in cell death after brain injury and neurodegenerative diseases. After a summary of the literature on the general functions of mitochondria and the effects of sex steroid administrations on mitochondrial metabolism, we will summarize and discuss our recent findings concerning sex differences in brain mitochondrial function in physiological and pathological conditions...
June 26, 2017: Journal of Neuroendocrinology
keyword
keyword
20796
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"