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Study Aims To Induce Recovery From Ankylosing Spondylitis
Chinese patients will soon have the opportunity to take part in a study of a novel therapy aimed at reversing the autoimmune disease, ankylosing spondylitis. Approximately 200 patients will be chosen to participate in a clinical trial that aims to merge the latest molecular discoveries published by the California non-profit Autoimmunity Research Foundation (ARF) with the medical expertise of physicians and researchers at West China Hospital.
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Greater Boston Unites To Transform Health Care
A coalition of organizations representing healthcare stakeholders throughout Greater Boston has been selected by the Robert Wood Johnson Foundation (RWJF) to participate in a planning grant to become part of the Aligning Forces for Quality (AF4Q) initiative. AF4Q is the Foundation"s signature effort to lift the overall quality of healthcare in targeted communities, reduce racial and ethnic disparities, and provide models for national reform.
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Some Experts Remain Skeptical Of Withdrawal Method, Despite Recent Study On Effectiveness
Reproductive health experts were "taken aback" by a recent study that found that the withdrawal method is nearly as effective as male condoms in preventing pregnancy, the New York Times reports. The paper -- published in the June issue of the journal Contraception -- found that 4% of couples will become pregnant over a one-year period if they consistently use the withdrawal method, compared with about 2% of couples that consistently use condoms. According to the study"s authors, a more significant finding was that the rate of "typical use" for withdrawal leads to pregnancy 18% of the time, compared with 17% of the time for typical use of condoms. They wrote in the study that "it is unfortunate that some couples do not realize they are substantially reducing their risk of pregnancy when using withdrawal, as these misperceptions may cause unnecessary levels of anxiety. More speculatively, if more people realized that correct and consistent use of withdrawal substantially reduced the risk of pregnancy, they might use it more effectively." Although the authors said the goal of the paper was to encourage discussion, some experts are concerned that spreading a message that withdrawal is effective could lead young people to have unprotected sex, potentially exposing themselves to sexually transmitted infections that can be prevented through condom use, the Times reports. Melissa Gilliam, chief of family planning and contraceptive research at the University of Chicago"s Department of Obstetrics and Gynecology and a board member of the Guttmacher Institute, said the study"s data "don"t necessarily translate to youth today." She added, "In terms of a reliable method used over and over again, the risk of failure is quite high."Rachel Jones, the lead author of the study and a senior research associate at Guttmacher, said that dismissing the withdrawal method as a "legitimate" form of contraception is "counterproductive for the prevention of pregnancy and also discourages academic inquiry into this frequently used and reasonably effective method." She also said that health educators and providers "should discuss withdrawal as a legitimate, if slightly less effective, contraceptive method in the same way they do condoms and diaphragms." She noted that "most women have used withdrawal at some point in their lives."The study"s authors decided to examine the issue after noticing that many researchers and providers "just kind of dismiss withdrawal and don"t seem to realize that it can prevent pregnancy," according to Jones. She added, "Most people seem to be under the impression that you might as well do nothing." Martha Kempner, vice president for information and communications at the Sexuality Information and Education Council of the United States, said the results of the study have "made some classroom teachers nervous to give out the truth in this instance, but we do have to tell the truth." She added, "People, kids in particular, they"re using it. It is better than nothing, and it is always available" (Belluck, New York Times, 7/21).
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Making Lettuce More Colourful And Healthier

Salad dressing aside, a pile of spinach has more nutritional value than a wedge of iceberg lettuce. That"s because darker colors in leafy vegetables are often signs of antioxidants that are thought to have a variety of health benefits. Now a team of plant physiologists has developed a way to make lettuce darker and redder - and therefore healthier - using ultraviolet light-emitting diodes (LEDs). Steven Britz of the U.S. Department of Agriculture in Beltsville, Md., and colleagues will present the research at the 2009 Conference on Lasers and Electro Optics/International Quantum Electronics Conference (CLEO/IQEC), which takes place May 31 to June 5 at the Baltimore Convention Center. The dark red tinges on a leaf of red leaf lettuce are the plant kingdom"s equivalent of suntan lotion. When bombarded with ultraviolet rays from the sun, the lettuce leaf creates UV-absorbing polyphenolic compounds in its outer layer of cells. Some of these compounds are red and belong to the same family that gives color to berries and apple skin. They help block ultraviolet radiation, which can mutate plant DNA and damage the photosynthesis that allows a plant to make its food. Polyphenolic compounds,which include flavonoids like quercetin and cyanidin, are also powerful antioxidants. Diets rich in antioxidants are thought to provide a variety of health benefits to human beings, from improving brain function to slowing the wear and tear of aging. To create red leaf lettuce plants enriched with these compounds, Britz purchased low-power LEDs that shine with UVB light, a component of natural sunlight. In small quantities, this ultraviolet light allows humans to produce vitamin D, which has been cited for its health benefits. Britz exposed the plants to levels of UVB light comparable to those that a beach goer would feel on a sunny day, approximately 10 milliwatts per square meter. After 43 hours of exposure to UVB light, the growing lettuce plants were noticeably redder than other plants that only saw white light. Though the team has yet to quantify this effect, it appears to increase as the intensity of the light increases. The effect also seems to be particularly sensitive to the wavelength used - peaking at 282 and 296 nanometers, and absent for longer wavelength UV. "We"ve been pleasantly surprised to see how effective the LEDs are, and are now testing how much exposure is required, and whether the light should be pulsed or continuous," says Britz. To cut transportation costs and feed the market in the wintertime, more produce is grown in greenhouses. Crops grown in the winter in northern climes receive very little UVB to begin with, and plants in greenhouses are further shielded from UVB by the glass walls. Ultraviolet LEDs could provide a way to replace and enhance this part of the electromagnetic spectrum to produce darker, more colorful lettuces. Britz also discussed the potential for using UV LEDs to preserve nutrients in vegetables that have already been harvested. Previous experiments have shown that the peel of a picked apple stays redder for a longer period of time when exposed to ultraviolet light. UVB LEDs are a promising technology for irradiating vegetables stored at low temperatures to maintain or even boost the amount of phytonutrients they contain. Presentation PTuA3, "Shedding light on nutrition," Steven Britz, 10:30 a.m., Tuesday, June 2. Colleen Morrison Optical Society of America


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