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Individual Bacterial Cells Are Capable Of Quorum Sensing When Confined In Small Volumes
Infections of wounds, pneumonia, etc. in hospitals in particular are often caused by bacteria called Pseudomonas aeruginosa. Once they reach a certain density, colonies of Pseudomonas aeruginosa produce virulence factors and can enter into a slimy state, a biofilm, which prevents antibiotics from penetrating. The process of quorum sensing, which cells use to "sense" cell density, is triggered when the concentration of certain signaling compounds generated by the bacteria reaches a threshold level. A team working with Rustem F. Ismagilov at the University of Chicago has now demonstrated that the absolute number of cells is irrelevant; only the number of bacteria in a given volume plays a role. As the researchers report in the journal Angewandte Chemie, they were even able to trigger quorum-sensing processes in single cells when these were confined in extremely small volumes.
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Kansas Organizations Sign Nationwide Petition Regarding Access To Condoms In CVS Stores
The Kansas City Star on Sunday examined a national petition -- signed recently by several local organizations -- requesting that CVS Caremark unlock condoms in all of its CVS pharmacy stores. "The petition, sponsored by the labor coalition Change to Win, said CVS stores tended to lock up condoms, especially in low-income neighborhoods with high numbers of minorities," the Star reports. CVS has said the practice is "a defense against shoplifters in stores where large numbers of condoms were stolen," according to the Star. CVS spokesperson Mike DeAngelis said not all condoms are locked in display cases. "DeAngelis also said the group behind the condom petition ò€¦ was mounting a smear campaign against CVS because of a labor dispute," the article states (Erickson, 7/12).
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MicroPhage Results On Rapid S. Aureus/MRSA Blood Culture Test Published
The performance of a new diagnostic test platform that rapidly identifies Staphylococcus aureus (S. aureus, "staph") bacteremia and determines antibiotic resistance or susceptibility in as little as five hours was presented at the 109th General Meeting of the American Society of Microbiology in Philadelphia, PA this week.
Sexual Health

Number Of Black Organ Donors Increases In Michigan, Many Blacks Still Reluctant To Donate Organs

Although the number of blacks who are registered as organ donors in Michigan has increased in the last 15 years, many are still reluctant to be organ donors, the Detroit News reports. According to Remonia Chapman, director of Gift of Life Michigan"s minority organ tissue transplant education program, many blacks are hesitant to participate with the organ donor registry because they have inadequate access to health care.Chapman said that increased awareness and education about organ donation and the diseases that lead to the need for donated organs, as well as partnerships with minority donors, black ministers and community groups, have encouraged more blacks to be organ donors. In the last 15 years, the percentage of black Michigan residents who are registered organ donors has increased from 10.8% to 21%, with overall minority registration at 24%. Chapman noted that about 41.3% of people on Michigan"s transplant waiting list and about 46% of people in need of a kidney are minorities.According to the News, minority donors are the best matches for minority organ recipients because the genetic profiles of the donor and recipient will have more similarities. Chapman added that the best matches for kidney recipients are donors from the recipient"s family or from the recipient"s ethnic group if a family donor is not available (Stolarz, Detroit News, 5/19). Reprinted with kind permission from http://www.kaisernetwork.org. You can view the entire Kaiser Daily Health Policy Report, search the archives, or sign up for email delivery at http://www.kaisernetwork.org/dailyreports/healthpolicy. The Kaiser Daily Health Policy Report is published for kaisernetwork.org, a free service of The Henry J. Kaiser Family Foundation. © 2009 Advisory Board Company and Kaiser Family Foundation. All rights reserved.


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