نتایج جستجو برای: ros

تعداد نتایج: 30099  

Journal: :CoRR 2017
Kaiyu Zheng

The ROS navigation stack is powerful for mobile robots to move from place to place reliably. The job of navigation stack is to produce a safe path for the robot to execute, by processing data from odometry, sensors and environment map. Maximizing the performance of this navigation stack requires some fine tuning of parameters, and this is not as simple as it looks. One who is sophomoric about t...

Journal: :Journal of immunology 2010
Kuo-Ching Sheng Geoffrey A Pietersz Choon Kit Tang Paul A Ramsland Vasso Apostolopoulos

Reactive oxygen species (ROS) have been implicated in various physiological activities. However, their role in dendritic cell (DC) activation and generation has not been investigated. Using the bone marrow-derived GM-CSF-induced ex vivo DC model, we characterize how induction of ROS correlates with inflammatory DC functionality and expansion. We describe that the functionality of GM-CSF-induced...

Journal: :Cancer research 2007
Chang Xia Qiao Meng Ling-Zhi Liu Yongyut Rojanasakul Xin-Ru Wang Bing-Hua Jiang

Reactive oxygen species (ROS) are associated with multiple cellular functions such as cell proliferation, differentiation, and apoptosis. However, the direct roles of endogenous ROS production still remain to be elucidated. In this study, we found that high levels of ROS were spontaneously produced by ovarian and prostate cancer cells. This elevated ROS production was inhibited by NADPH oxidase...

Journal: :journal of paramedical sciences 0
majid mahdavi department of biology, faculty of natural science, university of tabriz, tabriz, iran. reza yekta department of biology, faculty of natural science, university of tabriz, tabriz, iran. saeed hesami tackallou department of biology, garmsar branch, islamic azad university, tehran, iran.

extremely low frequency (elf) electromagnetic field (elf-emfs) are widely employed in electrical appliances and different equipment such as television sets, elf-emfs can  affect biological systems by increasing production  ros. the altered balance between ros generation and elimination plays a critical role in a variety of pathologic conditions. ros levels have been observed in several hematopo...

Journal: :iranian journal of pharmaceutical research 0
hassan malekinejad department of pharmacology and toxicology, faculty of veterinary medicine, urmia university, urmia, iran. masumeh moradi department of pharmacology and toxicology, faculty of veterinary medicine, urmia university, urmia, iran. johanna fink-gremmels department of veterinary, pharmacology, pharmacy and toxicology, faculty of veterinary medicine, utrecht university, yalelaan 104, 3508 td utrecht, the netherlands.

mycophenolic acid (mpa) is the active metabolite of mycophenolate mofetil. this study designed to investigate the mechanism of cytotoxicity of mpa on the genetically engineered pc12 tet off (pto) neuronal cells with p53 gene. alamar blue (ab) reduction showed concentration-dependent cytotoxicity of mpa on pto cells with ic50 value of 32.32 ± 4.61 mm. the reactive oxygen species (ros) generation...

Journal: :Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology 2012
Mohamed A Bedaiwy Sherief A Elnashar Jeffrey M Goldberg Rakesh Sharma Edward J Mascha Susana Arrigain Ashok Agarwal Tommaso Falcone

OBJECTIVE The purpose of this study was to evaluate the association between the follicular fluid (FF) reactive oxygen species (ROS) levels, total antioxidant capacity (TAC) and ROS-TAC score and pregnancy after intracytoplasmic sperm injection (ICSI). METHODS A total of 138 consecutive women who had ICSI were included in this study. FF ROS and TAC were measured by enhanced chemiluminescence a...

2014
Andrew P. Wojtovich Thomas H. Foster

Reactive Oxygen Species (ROS) are known to cause oxidative damage to DNA, proteins and lipids. In addition, recent evidence suggests that ROS can also initiate signaling cascades that respond to stress and modify specific redox-sensitive moieties as a regulatory mechanism. This suggests that ROS are physiologically-relevant signaling molecules. However, these sensor/effector molecules are not u...

2013
Matthias Roesslein Cordula Hirsch Jean-Pierre Kaiser Harald F. Krug Peter Wick

The release of reactive oxygen species (ROS) during the electron transport of mitochondrial aerobic respiration is the major source of ROS. However, contact between cells and nanoparticles (NPs) can also induce release of ROS, leading to an imbalance towards the pro-oxidative state. At low levels of ROS production, cells initiate a protective response to guarantee their survival, but an excess ...

Journal: :Journal of cell science 2005
James G Laing Brian C Chou Thomas H Steinberg

ZO-1 is the major connexin-interacting protein in ROS 17/2.8 (ROS) osteoblastic cells. We examined the role of ZO-1 in Cx43-mediated gap junction formation and function in ROS cells that expressed the connexin-interacting fragment of ZO-1 (ROS/ZO-1dn) cells. Expression of this ZO-1(7-444) fusion protein in ROS cells disrupted the Cx43/ZO-1 interaction and decreased dye transfer by 85%, although...

Journal: :Circulation research 2014
Moshi Song Yun Chen Guohua Gong Elizabeth Murphy Peter S Rabinovitch Gerald W Dorn

RATIONALE Mitochondrial reactive oxygen species (ROS) are implicated in aging, chronic degenerative neurological syndromes, and myopathies. On the basis of free radical hypothesis, dietary, pharmacological, and genetic ROS suppression has been tested to minimize tissue damage, with remarkable therapeutic efficacy. The effects of mitochondrial-specific ROS suppression in primary mitophagic dysfu...

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