Role of oxidative stress

Xem 1-20 trên 110 kết quả Role of oxidative stress
  • There is growing evidence on the importance of studies focusing on mechanisms and strategies leading to cancer prevention. The plethora of approaches include regulation of oxidative stress using antioxidant therapies, carefully balanced diets and living habits, epidemiological evidence and molecular approaches on the role of key biological molecules such as antioxidant enzymes, vitamins, proteins and naturally occurring free radical scavengers as well as controversial results and clinical applications. These are some of the topics that this book highlights.

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  • The role of oxidative stress in pilocarpine-induced status epilepticus was investigated by measuring lipid peroxidation level, nitrite content, GSH con-centration, and superoxide dismutase and catalase activities in the hippo-campus of Wistar rats. The control group was subcutaneously injected with 0.9% saline. The experimental group received pilocarpine (400 mgÆkg )1 , subcutaneous). Both groups were killed 24 h after treatment.

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  • he 2004-05 Tanzania Demographic and Health Survey is the most recent in a series of national surveys conducted in Tanzania to meas- - ure levels, patterns, and trends in fertility, family planning, and health indicators. he previous surveys were carried out in 1991-92, 1994, 1996, and 1999. he 2004-05 TDHS was conducted by the National Bureau of Statistics (NBS). he 2004-05 survey included a nationally representative sample of 10,329 women and 2,635 men from approximately 9,700 households.

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  • The Power of Accounting: What the Numbers Mean and How to Use Them provides a highly readable text for non-financial managers. It explores accounting’s uses and limitations in the management process. The text is intended for users of accounting information as opposed to preparers. It focuses on aiding the reader in understanding what accounting numbers mean, what they do not mean, when and how they can be used for decision making and planning and when they cannot. Larry Lewis is a Professor of Accounting at the University of Portland’s Pamplin School of Business, USA.

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  • Private real estate investment is a typical one-shot decision problem for personal investors due to the huge investment expense and the fear of substantial loss. There is only one outcome for a one-shot decision problem. The private real estate investment problem is analyzed within a one-shot decision framework. The procedure for a one-shot decision consists of two steps. In the first step, for each alternative, some states of nature, which are called focus points, are selected amongst all states of nature based on the attitudes of decision makers on uncertainty.

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  • Moreover, earnings management proxies should be particularly responsive to the use of discretion and firms’ reporting incentives, making our tests more powerful. Finally, we can draw on prior research in constructing several measures of earnings management (e.g., Healy and Wahlen, 1999; Dechow and Skinner, 2000). Following Leuz et al. (2003), we compute four different proxies capturing a wide range of earnings management activities: i.e.

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  • There is a strong relationship between health insurance coverage and access to medical services. Health insurance makes a substantial difference in the amount and kind of health care people are able to afford, as well as where they obtain care. Research has consistently shown that the lack of insurance ultimately compromises persons’ health because they are less likely to receive preventive care, are more likely to be hospitalized for avoidable health problems, and are more likely to be diagnosed in the late stages of disease.

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  • Fading support by the financial system for firms, and especially new entrants, is a major concern in the current context, underscoring the primary importance of fixing the financial system. Growing aversion to risk combined with other factors (such as difficulties for investors to exit) is already drying up many sources of seed and venture capital. The total amount of venture capital investment in the United States started declining at the beginning of 2008, and the fall accelerated at the end of 2008 and beginning of 2009 (Figure 2).

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  • Aimed at shedding light on the possible options for developing countries to make use of agri- environmental and rural development measures within the framework of the WTO, this paper surveys those programs used in the Quad that are considered non or at most minimally trade distorting, non-discriminatory and otherwise consistent with current WTO rules. Furthermore, it tries to illustrate the possible outcomes in the ongoing negotiations in the WTO on the Agreement on Agriculture (AoA) from a developing country viewpoint, related to the types of mechanisms surveyed above. ...

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  • Quality assurance of the screening process requires a robust system of programme mana- gement and coordination, assuring that all aspects of the service are performing adequa- tely. The first edition of the European Guidelines for Quality Assurance in Cervical Cancer Screening emphasized the principles of organised, population-based screening and was in- strumental in initiating pilot projects in Europe. More than a decade has passed since pub- lication of the first guideline edition.

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  • While  the  Port  Authority’s  tunnels,  bridges,  and  airports  continue  to  contribute  the  vast  majority  of  cash  flow  within  the  organization,  over  recent  decades  the  Port  Authority  has  become a  significant  real estate developer and asset manager with  its own expansive  security  force,  a  posture  that warrants  further  evaluation  as  the  demands  of  the WTC  development  approaches  conclusion.

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  • There are two general decision making strategies that judges use when evaluating a beer. In a top-down decision making strategy, the judge forms an overall impression about the quality of the beer, decides what overall score to assign that beer, and deducts points for each deficient characteristic of the beer based on the overall impression. The problem with this top-down approach to beer evaluation is that it is difficult to ensure that the points allocated to each subcategory (e.g.

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  • It is important that cord blood transplantation is one of the risk factors of symptomatic adenoviremia (Robin et al., 2007), which develops to acute renal failure in the terminal stage (Abe T et al., 2009). At present, there is no established consensus about the treatment for acute renal failure induced by adenovirus after stem cell transplantation. This chapter focuses on the recent advances in diagnosis, mostly due to the development of molecular methods, and therapeutic interventions.

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  • My passion started at school where the languages I was taught – French, English, and Latin – had long lasting consequences on my life. At 17, I met a brilliant and attractive French teenager who is now my wife; English would prove useful for reading and writing in medicine; and Latin opened my eyes to the world of words. One week before my 13th birthday, I used my new Christmas voice-recorder to register word lists from our school manual: rosa – die Rose; insula – die Insel; bestia – das Tier.

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  • While the nature and prevalence of defensive medical practices have been widely debated, most agree that the costs are exorbitant. In fact, some estimates report that the practice of defensive medicine costs the American health care system in excess of $100 billion dollars annually, which would account for up to 12% of all health care expenditures.

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  • Biomarkers in development by EDRN address common malignancies as well as mesothelioma and hepatocellular cancer. The latter are of major worldwide importance and are increasing in incidence in the United States. EDRN Collaborative Groups, focused on breast and gynecologic cancers, gastrointestinal and other associated cancers, lung and upper aerodigestive cancers and prostate and urologic cancers, each have biomarkers in prevalidation and validation phases in which the accuracy of experimental results is confirmed.

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  • In 2005, the baseline country studies pointed to a lack of connection between advocacy for reduction of maternal mortality in national-level planning and the necessary linkage to effective programmatic responses through resource allocation, capacity- building and human-resource development. The 2011 case-studies suggest that this problem persists: despite a closing of the gap between policy and programmes, the limited progress with improving health outcomes has shown the importance of strengthening health systems – particularly for maternal and newborn health.

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  • Innovative developments in information and communication technologies (ICT) irre- vocably change our lives and enable new possibilities for society. One of the fi elds that strongly profi ts from this trend is Telemedicine, which can be defi ned as novel ICT- enabled medical services that help to overcome classical barriers in space and time. Through Telemedicine patients can access medical expertise that may not be available at the patient’s site.

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  • The length of chordae was a measurement of the distance between the head of the PM and the free edge of the posterior leaflet. Length of the opposing chordae of the posterior leaflet was measured directly by using a calliper. Double-armed mattress sutures with CV-5 GORE-TEX were placed at the fibrous tip of the PM using PTFE on both sides and tied down firmly. In all cases Doi performed Duran ring annuloplasty. Thereafter, the ePTFE suture is placed through the anterior leaflet.

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  • Penicillium expansum is a post-harvest pathogen of apples which can produce the hazardous mycotoxin patulin. The yeast Cryptococcus laurentii (LS28) is a biocontrol agent able to colonize highly oxidative environments such as wounds in apples. In this study culture filtrates of the basidiomycete Lentinula edodes (LF23) were used to enhance the biocontrol activity of LS28. In vitro L. edodes culture filtrates improved the growth of C. laurentii and the activity of its catalase, superoxide dismutase and glutathione peroxidase, which play a key role in oxidant scavenging.

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