12 research outputs found
Expression of stress-response ATF3 is mediated by Nrf2 in astrocytes
Activating Transcription Factor 3 (ATF3), a member of the ATF/CREB family, is induced rapidly by various stresses. Its induction mechanism and role in response to changes in cellular redox status, however, have not been elucidated. Here, we found that NF-E2-related factor 2 (Nrf2), a transcription factor known to bind to antioxidant response element (ARE) in promoters, transcriptionally upregulated ATF3 expression in astrocytes. Treatment with Nrf2 activators and oxidants provoked ATF3 induction in astrocytes, whereas its expression was reduced in Nrf2-depleted cells. We further demonstrated that the consensus ARE in the ATF3 promoter is critical for Nrf2-mediation by promoter analyses using an ATF3 promoter-driven luciferase construct and a chromatin immunoprecipitation assay. In addition, we found that Nrf2-dependent ATF3 induction contributed to the antioxidative and cytoprotective functions of Nrf2 in astrocytes. Taken together, our findings suggest that ATF3 is a new target for Nrf2 and has a cytoprotective function in astrocytes
Women with endometriosis have higher comorbidities: Analysis of domestic data in Taiwan
AbstractEndometriosis, defined by the presence of viable extrauterine endometrial glands and stroma, can grow or bleed cyclically, and possesses characteristics including a destructive, invasive, and metastatic nature. Since endometriosis may result in pelvic inflammation, adhesion, chronic pain, and infertility, and can progress to biologically malignant tumors, it is a long-term major health issue in women of reproductive age. In this review, we analyze the Taiwan domestic research addressing associations between endometriosis and other diseases. Concerning malignant tumors, we identified four studies on the links between endometriosis and ovarian cancer, one on breast cancer, two on endometrial cancer, one on colorectal cancer, and one on other malignancies, as well as one on associations between endometriosis and irritable bowel syndrome, one on links with migraine headache, three on links with pelvic inflammatory diseases, four on links with infertility, four on links with obesity, four on links with chronic liver disease, four on links with rheumatoid arthritis, four on links with chronic renal disease, five on links with diabetes mellitus, and five on links with cardiovascular diseases (hypertension, hyperlipidemia, etc.). The data available to date support that women with endometriosis might be at risk of some chronic illnesses and certain malignancies, although we consider the evidence for some comorbidities to be of low quality, for example, the association between colon cancer and adenomyosis/endometriosis. We still believe that the risk of comorbidity might be higher in women with endometriosis than that we supposed before. More research is needed to determine whether women with endometriosis are really at risk of these comorbidities
Optimal Trajectory Generation for Next Generation Flight Management Systems
Ā© 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Presented at the Digital Avionics Systems Conference, Syracuse, NY, Oct. 2013.DOI: 10.1109/DASC.2013.6712566Next generation flight management systems
require the compliance of
temporal and spatial
constraints on navigation performance. The problem
of generating fuel-efficient trajectories for aircrafts that comply with the required navigation
performance is approached from an optimal control
framework. By deriving the necessary conditions for optimality, nominal optimal control signals can be generated in a computationally efficient manner. These control signals can be used to generate nominal trajectories for an aircraft model. Using the nominal control and nominal trajectory, a feedforward-feedback control scheme can be implemented to robustify the systemās response in the presence of uncertainty and disturbances to still
achieve the required navigation performance. The feasibility of the approach is demonstrated through simulation and Monte Carlo runs
Multi-Objective Process Optimization of Pulsed Plasma Arc Welding SS400 Steel Pipe with Foamed Aluminum Liner
Executive Decision Support: Single-Agent Control of Multiple UAVs
(c) 2009 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.Digital Object Identifier: 10.1109/MRA.2009.932526One challenge facing coordination and deployment of unmanned aerial vehicles (UAVs) today is the amount of human involvement needed to carry out a successful mission. Currently, control and coordination of UAVs typically involves multiple operators to control a single agent. The aim of this article is to invert this relationship, enabling a single pilot to control and coordinate a group of UAVs. Furthermore, decision support is provided to the pilot to facilitate effective control of the UAV team. In the scenario envisioned in this article, the human operator (the pilot) is operating along-side a team of UAVs. The pilot communicates with the UAV team remotely and controls the UAV team to execute a surveillance mission
Automated Threat Avoidance with 4-D Trajectory Replanning in Resource-Constrained Cockpits
Identification, Synthesis, and Evaluation of New Neuraminidase Inhibitors
High-throughput screening
was performed on ā¼6800 compounds
to identify <b>KR-72039</b> as an inhibitor of H1N1 and H5N1
neuraminidases (NAs). Structureāactivity relationship studies
led to <b>3e</b>, which inhibited H5N1 NA with an IC<sub>50</sub> of 2.8 Ī¼M and blocked viral replication. Docking analysis
shows that compounds bind to loop-430 around the NA active site. Compound <b>3l</b> additionally inhibited H7N9 NA, making it a dual inhibitor
of N1- and N2-type NAs