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What Is A Virus? What Is A Viral Infection?
A virus (from the Latin virus meaning toxin or poison) is a microscopic organism consisting of genetic material (RNA or DNA) surrounded by a protein, lipid (fat), or glycoprotein coat. Viruses are unique organisms because they cannot reproduce without a host cell. After contacting a host cell, a virus will insert genetic material into the host and take over the host"s functions. The cell, now infected, continues to reproduce, but it reproduces more viral protein and genetic material instead of its usual products. It is this process that earns viruses the classification of "parasite".
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Last Call To Register For The Wellness Run For Diabetes UK
With entries for the 2009 Wellness Run closing on Sunday 17 May, families and individuals wanting to take part in the popular fitness run are being urged to register now.
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Oxoid Makes Screening For Antibiotic-Resistant Organisms Faster, Allowing For Swifter Infection Control And Patient Treatment
Oxoid, a world leading microbiology brand, has today announced the availability of two new chromogenic media in the Brilliance™ Resistant Screening Agar range. Brilliance ESBL Agar and Brilliance VRE Agar can be used as screening tests to rapidly identify patients colonised with problematic Extended Spectrum Beta-Lactamase (ESBL) producing organisms and vancomycin resistant enterococci (VRE), allowing appropriate infection control and treatment to commence sooner for the best possible patient outcome.
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Physical Activity Reduces Prostate Carcinogenesis In A Transgenic Model

UroToday.com - A recent European study demonstrated that 10-year mortality from cardiovascular disease and cancer was decreased in a population of 70 to 90 year olds who adhered to a Mediterranean diet, were physically active, had moderate alcohol consumption and did not smoke. There are also reports suggesting an inverse association between physical activity and risk of prostate cancer (CaP). Yet mechanisms linking lifestyle and longevity are not well investigated. This report in The Prostate investigates an animal model for the association between physical activity and development of CaP. Male C3(1)Tag mice were used in the study. These mice are predisposed to CaP due to the directed expression of SV40 oncogenes to that organ combined with voluntary exercise. Exercise consisted of running on a computer monitored running wheel. Nine mice served as non-running controls and 20 mice were in the running group. The amount of running by each mouse was recorded by the computer and access to the wheel was continuous. In this model, detectable prostate carcinogenesis is usually underway by 20 weeks of age. Histopathology was performed at 20 weeks of age by blinded interpretation. Mice ran for an average of 4.03km/day and at an average speed of 0.72km/hr. There was no difference between the two groups regarding increase in body weight over time. There were no apparent differences in histopathology grading between mice housed in standard cages and those in the running cages. In subgroup analysis, mice that ran >5km/day exhibited a trend for more normal prostate phenotype. Thus the suggestion is that CaP is likely delayed or diminished by increase wheel running in transgenic C3(1)Tag mice, but this observation was limited to the mice who run >5km/day. The study is novel and may require remodeling to further substantiate the hypothesis. Esser KA, Harpole CE, Prins GS, Diamond AM Prostate. 2009 Jun 1. (Epub ahead of print) 10.1002/pros.20987 Written by UroToday.com Contributing Editor Christopher P. Evans, MD, FACS UroToday - the only urology website with original content written by global urology key opinion leaders actively engaged in clinical practice. To access the latest urology news releases from UroToday, go to: www.urotoday.com Copyright © 2009 - UroToday


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