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https://www.readbyqxmd.com/read/28538801/effects-of-hyperbaric-oxygen-and-nerve-growth-factor-on-the-long-term-neural-behavior-of-neonatal-rats-with-hypoxic-ischemic-brain-damage
#1
Lixia Wei, Qing Ren, Yongjun Zhang, Jiwen Wang
Purpose: To evaluate the effects of HBO (Hyperbaric oxygen) and NGF (Nerve growth factor) on the long-term neural behavior of neonatal rats with HIBD (Neonatal hypoxic ischemic brain damage). Methods: The HIBD model was produced by ligating the right common carotid artery of 7 days old SD (Sprague-Dawley) rats followed by 8% O2 + 92% N2 for 2h. Totally 40 rats were randomly divided into 5 groups including sham-operated group, HIBD control group, HBO treated group, NGF treated group and NGF + HBO treated group...
April 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28537880/biological-effects-and-epidemiological-consequences-of-arsenic-exposure-and-reagents-that-can-ameliorate-arsenic-damage-in-vivo
#2
REVIEW
Chinthalapally V Rao, Sanya Pal, Altaf Mohammed, Mudassir Farooqui, Mark P Doescher, Adam S Asch, Hiroshi Y Yamada
Through contaminated diet, water, and other forms of environmental exposure, arsenic affects human health. There are many U.S. and worldwide "hot spots" where the arsenic level in public water exceeds the maximum exposure limit. The biological effects of chronic arsenic exposure include generation of reactive oxygen species (ROS), leading to oxidative stress and DNA damage, epigenetic DNA modification, induction of genomic instability, and inflammation and immunomodulation, all of which can initiate carcinogenesis...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28535594/industrial-pm2-5-cause-pulmonary-adverse-effect-through-rhoa-rock-pathway
#3
Junyan Yan, Chia-Hsiang Lai, Shih-Chun Candice Lung, Chongjun Chen, Wen-Cheng Wang, Pin-I Huang, Chia-Hua Lin
According to the Chinese Ministry of Health, industrial pollution-induced health impacts have been the leading cause of death in China. While industrial fine particulate matter (PM2.5) is associated with adverse health effects, the major action mechanisms of different compositions of PM2.5 are currently unclear. In this study, we treated normal human lung epithelial BEAS-2B cells with industrial organic and water-soluble PM2.5 extracts under daily alveolar deposition dose to elucidate the molecular mechanisms underlying adverse pulmonary effects induced by PM2...
May 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28535027/arsenite-binds-to-the-ring-finger-domain-of-fancl-e3-ubiquitin-ligase-and-inhibits-dna-interstrand-cross-link-repair
#4
Ji Jiang, Marina Bellani, Lin Li, Pengcheng Wang, Michael M Seidman, Yinsheng Wang
Human exposure to arsenic in drinking water is known to be associated with the development of bladder, lung, kidney, and skin cancers. The molecular mechanisms underlying the carcinogenic effects of arsenic species remain incompletely understood. DNA interstrand cross-links (ICLs) are among the most cytotoxic type of DNA lesions that block DNA replication and transcription, and these lesions can be induced by endogenous metabolism and by exposure to exogenous agents. Fanconi anemia (FA) is a congenital disorder manifested with elevated sensitivity toward DNA interstrand cross-linking agents...
May 23, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28534662/neuroprotection-of-brain-permeable-iron-chelator-vk-28-against-intracerebral-hemorrhage-in-mice
#5
Qian Li, Jieru Wan, Xi Lan, Xiaoning Han, Zhongyu Wang, Jian Wang
Iron overload plays a key role in the secondary brain damage that develops after intracerebral hemorrhage (ICH). The significant increase in iron deposition is associated with the generation of reactive oxygen species (ROS), which leads to oxidative brain damage. In this study, we examined the protective effects of VK-28, a brain-permeable iron chelator, against hemoglobin toxicity in an ex vivo organotypic hippocampal slice culture (OHSC) model and in middle-aged mice subjected to an in vivo, collagenase-induced ICH model...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28533142/evaluation-of-plasma-sphingosine-1-phosphate-hepcidin-and-cardiovascular-damage-biomarkers-cardiac-troponin-i-and-homocysteine-in-rats-infected-with-brucellosis-and-vaccinated-rev-1-rb-51
#6
Kaveh Azimzadeh, Reza Nasrollahi Nargesabad, Nasim Vousooghi
Brucellosis is known as one of important zoonosis. Studying the histological and biochemical effects of the disease could help to increase our knowledge about it. The aim of the present study was to evaluate changes of plasma parameters after intraperitoneal injection of two species of Brucella (Brucella melitensis and Brucella abortus) and two vaccines (Rev-1, RB-51) in the rat. Forty male rats were divided into five groups (n = 8 in each group). Two groups received suspensions of Brucella abortus and Brucella melitensis and two other groups were injected intraperitoneally with two mentioned vaccines and the last group received only distilled water...
May 19, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28532527/how-i-do-it-underwater-endoscopic-ear-surgery-for-plugging-in-superior-canal-dehiscence-syndrome
#7
D Yamauchi, Y Hara, H Hidaka, T Kawase, Y Katori
BACKGROUND: Underwater endoscopic ear surgery does not require suction and so protects the inner ear from unexpected aeration that may damage its function in the treatment of labyrinthine fistula. A method of underwater endoscopic ear surgery is proposed for the treatment of superior canal dehiscence. METHODS: Underwater endoscopic ear surgery was performed for plugging of the superior semicircular canal through the transmastoid approach. Saline solution was infused into the mastoid cavity through an Endo-Scrub Lens Cleaning Sheath...
May 23, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28532242/antioxidant-supplementation-a-linchpin-in-radiation-induced-enteritis
#8
Mumtaz Anwar, Shabeer Ahmad, Reyhan Akhtar, Akhtar Mahmood, Safrun Mahmood
Radiation enteritis is one of the most feared complications of abdominal and pelvic regions. Thus, radiation to abdominal or pelvic malignancies unavoidably injures the intestine. Because of rapid cell turnover, the intestine is highly sensitive to radiation injury, which is the limiting factor in the permissible dosage of irradiation. Bowel injuries such as fistulas, strictures, and chronic malabsorption are potentially life-threatening complications and have an impact on patient quality of life. The incidence of radiation enteritis is increasing because of the current trend of combined chemotherapy and radiation...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28531951/identifying-and-quantifying-geochemical-and-mixing-processes-in-the-matanza-riachuelo-aquifer-system-argentina
#9
S Armengol, M Manzano, S A Bea, S Martínez
The Matanza-Riachuelo River Basin, in the Northeast of the Buenos Aires Province, is one of the most industrialized and populated region in Argentina and it is worldwide known for its alarming environmental degradation. In order to prevent further damages, the aquifer system, which consists of two overlaid aquifers, is being monitored from 2008 by the river basin authority, Autoridad de la Cuenca Matanza-Riachuelo. The groundwater chemical baseline has been established in a previous paper (Zabala et al., 2016), and this one is devoted to the identification of the main physical and hydrogeochemical processes that control groundwater chemistry and its areal distribution...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531798/environmental-hazard-assessment-of-a-marine-mine-tailings-deposit-site-and-potential-implications-for-deep-sea-mining
#10
Nélia C Mestre, Thiago L Rocha, Miquel Canals, Cátia Cardoso, Roberto Danovaro, Antonio Dell'Anno, Cristina Gambi, Francesco Regoli, Anna Sanchez-Vidal, Maria João Bebianno
Portmán Bay is a heavily contaminated area resulting from decades of metal mine tailings disposal, and is considered a suitable shallow-water analogue to investigate the potential ecotoxicological impact of deep-sea mining. Resuspension plumes were artificially created by removing the top layer of the mine tailings deposit by bottom trawling. Mussels were deployed at three sites: i) off the mine tailings deposit area; ii) on the mine tailings deposit beyond the influence from the resuspension plumes; iii) under the influence of the artificially generated resuspension plumes...
May 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28529278/morphological-evaluation-of-artificial-caries-affected-dentin-after-applying-fcp-complex
#11
Ritsuko Mashiko, Go Inoue, Toru Nikaido, Junji Tagami
FCP-COMPLEX is a newly-developed solution that contains fluoride, calcium, and phosphoric acid. It has the potential to reinforce caries-affected dentin. The purpose of this study was to evaluate the effect of FCP-COMPLEX on the morphology of bovine artificial caries-affected dentin (ACAD). FCP-COMPLEX, 2% sodium fluoride solution, and distilled water were applied to bovine ACAD and the effect on acid-induced damage was observed. Scanning electron microscopy was used to evaluate morphology after acid application...
May 19, 2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28529176/impairment-of-antioxidant-mechanisms-in-japanese-medaka-oryzias-latipes-by-acute-exposure-to-aluminum
#12
Wilson F Ramírez-Duarte, Tomofumi Kurobe, Swee J Teh
Increasing aluminum (Al) concentrations in aquatic habitats as a result of anthropogenic acidification and industrialization is a global issue. Moreover, in extensive areas of the humid tropics and subtropics, high Al concentrations in freshwater are observed because of both naturally low pH and high Al concentrations in soil. Al increases production of reactive oxygen species and enhances oxidative damage in mammals. However, no studies have examined the effect of environmentally relevant concentrations of Al at low pH on oxidative stress in fish...
May 18, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28529052/prenatal-melamine-exposure-induces-impairments-of-spatial-cognition-and-hippocampal-synaptic-plasticity-in-female-adolescent-rats
#13
Lei An, Wei Sun
Developmental exposure to melamine induces long-term effects on brain and behavior in male rodents. To examine whether this prenatal event damages cognitive function in female offspring, we evaluated the behavioral effects and further attempted to investigate synaptic function. Prenatal melamine exposure (PME) was given by oral treatment to pregnant females through the whole gestational days with 400mg/day/kg bodyweight. On postnatal day (PD) 36, female offspring were assessed for spatial cognition in the Morris Water Maze (MWM) test...
May 18, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28527978/enhanced-antimony-v-removal-using-synergistic-effects-of-fe-hydrolytic-flocs-and-ultrafiltration-membrane-with-sludge-discharge-evaluation
#14
Baiwen Ma, Xing Wang, Ruiping Liu, Zenglu Qi, William A Jefferson, Huachun Lan, Huijuan Liu, Jiuhui Qu
The integration of adsorbents with ultrafiltration (UF) membranes is a promising method for alleviating membrane fouling and reducing land use. However, a number of problems have become apparent concerning the granular adsorbents used currently, such as high running cost, high chance of causing membrane surface damage, low in situ chemical cleaning efficiency, etc. Herein, to overcome these disadvantages, loose in situ hydrolyzed flocs were directly injected into the membrane tank, providing strong adsorption ability at low cost...
May 13, 2017: Water Research
https://www.readbyqxmd.com/read/28527714/investigation-of-left-and-right-lateral-fluid-percussion-injury-in-c57bl6-j-mice-in-vivo-functional-consequences
#15
Lesley D Schurman, Terry L Smith, Anthony J Morales, Nancy N Lee, Thomas M Reeves, Linda L Phillips, Aron H Lichtman
Although rodent models of traumatic brain injury (TBI) reliably produce cognitive and motor disturbances, behavioral characterization resulting from left and right hemisphere injuries remains unexplored. Here we examined the functional consequences of targeting the left versus right parietal cortex in lateral fluid percussion injury, on Morris water maze (MWM) spatial memory tasks (fixed platform and reversal) and neurological motor deficits (neurological severity score and rotarod). In the MWM fixed platform task, right lateral injury produced a small delay in acquisition rate compared to left...
May 17, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28527426/malvidin-and-cyanidin-derivatives-from-a%C3%A3-ai-fruit-euterpe-oleracea-mart-counteract-uv-a-induced-oxidative-stress-in-immortalized-fibroblasts
#16
Ganna Petruk, Anna Illiano, Rita Del Giudice, Assunta Raiola, Angela Amoresano, Maria Manuela Rigano, Renata Piccoli, Daria Maria Monti
UV-A radiations are known to induce cellular oxidative stress, leading to premature skin aging. Consumption of açai fruit (Euterpe oleracea Martius) is known to have many health benefits due to its high level of antioxidants. Herein, we analyzed the ability of phenolic compounds extracted from this fruit to attenuate UV-A-induced oxidative stress in immortalized fibroblast. A methanol/water açai extract was fractionated by HPLC and each fraction tested for anti-oxidant stress activity. Immortalized fibroblasts were pre-incubated with açai fractions and then exposed to UV-A radiations...
May 12, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28527047/dietary-ascorbic-acid-reduced-micronucleus-and-nuclear-abnormalities-in-clarias-gariepinus-burchell-1822-exposed-to-hospital-effluent
#17
Chibuisi G Alimba, Raphael D Ajiboye, Olakunle S Fagbenro
Hospital effluents contain myriad of mutagens and genotoxins capable of increasing DNA damage in aquatic biota. African mudfish, Clarias gariepinus, are exposed to genotoxins when cultured in swamps and derelict water bodies often contaminated by effluents. Moreover, its DNA is susceptible to xenobiotic-induced lesions since it lacks L-gulonolactone oxidase and hence cannot synthesize L-ascorbic acid. This study investigated 96-h acute toxicity and protective effects of dietary ascorbic acid (AA) against micronucleus (MN) and abnormal nuclear (NAs) formation in C...
May 19, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28526982/pre-drought-priming-sustains-grain-development-under-post-anthesis-drought-stress-by-regulating-the-growth-hormones-in-winter-wheat-triticum-aestivum-l
#18
Muhammad Abid, Yuhang Shao, Sixi Liu, Feng Wang, Jingwen Gao, Dong Jiang, Zhongwei Tian, Tingbo Dai
Drought stress during grain filling is the most yield-damaging to wheat. Pre-drought priming facilitated the wheat plants to sustain grain development against the post-anthesis drought stress by modulating the levels of growth hormones. Post-anthesis drought stress substantially reduces grain yield in wheat (Triticum aestivum L.) due to impaired grain development associated with imbalanced levels of growth hormones. To investigate whether pre-drought priming could sustain grain development in wheat by regulating favorable levels of growth hormones under post-anthesis drought conditions, the plants of a drought-sensitive (Yangmai-16) and drought-tolerant (Luhan-7) wheat cultivar were exposed to a moderate drought stress during tillering (Feekes 2 stage) for priming, and then, a subsequent severe drought stress was applied from 7 to 14 days after anthesis...
May 19, 2017: Planta
https://www.readbyqxmd.com/read/28525650/detection-of-damage-on-single-or-double-stranded-dna-in-a-population-exposed-to-arsenic-in-drinking-water
#19
J Jiménez-Villarreal, D I Rivas-Armendariz, C P Pineda-Belmontes, N D Betancourt-Martínez, M A Macías-Corral, A J Guerra-Alanis, M S Niño-Castañeda, J Morán-Martínez
Different studies have suggested an association between arsenic (As) exposure and damage to single-stranded DNA by reactive oxygen species derived from the biotransformation of arsenic. The single strand damages are converted to double strand damage upon interaction with ultraviolet radiation. Analysis of genomic integrity is important for assessing the genotoxicity caused by environmental pollutants. In this study, we compared the concentration of As in drinking water, nutritional status, lifestyle variables, and the level of genotoxicity in an exposed population and a control group...
May 18, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28524728/a-reduction-in-dna-damage-in-neural-tissue-and-peripheral-blood-of-old-mice-treated-with-caffeine
#20
Adriani Paganini Damiani, Michelle Lima Garcez, Larissa Letieli de Abreu, Taís Helena Tavares, Carina Rodrigues Boeck, Vanessa Moraes de Andrade
Studies on caffeine consumption have shown a negative correlation with development of some diseases with subsequent beneficial manifestations. Our aim was to assess the effects of caffeine on peripheral blood and neural tissue DNA in young adult and aged mice. Male Swiss mice (age 2-3 or 16-18 months, respectively) were treated with a caffeine solution (0.3 g/l) for 4 weeks, while controls received water. After the treatments, blood and hippocampal cells (for a comet assay) and femurs (for a micronucleus [MN] test) were collected...
May 19, 2017: Journal of Toxicology and Environmental Health. Part A
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