Body

Peliosis hepatis (PH) is a rare pathological entity. PH varies from minimal asymptomatic lesions to larger massive lesions that may present with cholestasis, liver failure, portal hypertension, avascular mass lesion, or even spontaneous rupture.

BOSTON (December 8, 2009) — The parasite Trypanosoma cruzi (or T. cruzi), which causes Chagas' disease, will go to great lengths to evade death once it has infected human host cells, researchers have discovered. In a study published in the November 17 online issue of Science Signaling, the researchers describe how a protein called parasite-derived neurotrophic factor (PDNF) prolongs the life of the T. cruzi parasite by activating anti-apoptotic (or anti-cell-death) molecules in the host cell.

Researchers from the UCLA AIDS Institute and colleagues have for the first time demonstrated that human blood stem cells can be engineered into cells that can target and kill HIV-infected cells — a process that potentially could be used against a range of chronic viral diseases.

The study, published Dec. 7 in the-peer reviewed online journal PLoS ONE, provides proof-of-principle — that is, a demonstration of feasibility — that human stem cells can be engineered into the equivalent of a genetic vaccine.

(Santa Barbara, Calif.) –– Females can be too attractive to the opposite sex –– too attractive for their own good –– say biologists at UC Santa Barbara. They found that, among fruit flies, too much male attention directed toward attractive females leads to smaller families and, ultimately, to a reduced rate of population-wide adaptive evolution.

In an article published in the December 8 issue of Public Library of Science Biology, the authors described their experiments on the sex lives of fruit flies.

December 15, 2009 – (Albany, N.Y., USA) The human sensory experience is far more complex and nuanced than previously thought, according to a groundbreaking new study published in the December 15 issue of the journal Pain. In the article, researchers at Albany Medical College, the University of Liverpool and Cambridge University report that the human body has an entirely unique and separate sensory system aside from the nerves that give most of us the ability to touch and feel.

HOUSTON – Supplementation with a selenium-based antioxidant compound decreased the risk of developing new polyps of the large bowel — called colorectal metachronous adenomas — in people who previously had colorectal polyps removed.

"Our study is the first intervention trial specifically designed to evaluate the efficacy of the selenium-based antioxidant compound on the risk of developing metachronous adenomas," said Luigina Bonelli, M.D., head of the unit of secondary prevention and screening at the National Institute for Cancer Research, in Genoa, Italy.

HOUSTON – As little as 15 minutes of exercise a day can reduce overall mortality rates in patients with prostate cancer, according to findings presented at the American Association for Cancer Research Frontiers in Cancer Prevention Research Conference, held here, Dec. 6-9, 2009.

"We saw benefits at very attainable levels of activity," said Stacey A. Kenfield, Sc.D., epidemiology research associate at the Harvard School of Public Health and lead author of the study. "The results suggest that men with prostate cancer should do some physical activity for their overall health."

HOUSTON – Between 2002 and 2003, American women experienced a 7 percent decline in breast cancer incidence, which scientists attribute to the publicity surrounding results of the Women's Health Initiative (WHI).

However, researchers led by Brian Sprague, Ph.D. have conducted a reevaluation of the post-WHI landscape that suggests otherwise.

HOUSTON – While it is too early for physicians to start advising their male patients to take up the habit of regular coffee drinking, data presented at the American Association for Cancer Research Frontiers in Cancer Prevention Research Conference revealed a strong inverse association between coffee consumption and the risk of lethal and advanced prostate cancers.

Defibrotide, a novel drug which modulates the response of blood vessels to injury, was markedly more effective than standard treatment in post-stem cell transplant patients with hepatic veno-occlusive disease, a life threatening toxicity of transplant caused by blockages in tiny blood vessels of the liver, according to a study led by Dana-Farber Cancer Institute scientists.

NEW ORLEANS—A targeted drug that is active against acute myeloid leukemia (AML) is particularly effective when teamed with chemotherapy in patients whose cancer cells harbor a key genetic mutation, researchers at Dana-Farber Cancer Institute and their colleagues will report at the American Society of Hematology's (ASH) annual meeting on Monday, Dec. 7 (Ernest N. Morial Convention Center, Room 343-345, 5:15 pm CT).

ANN ARBOR, Mich. — A new study finds that compounds derived from the spices turmeric and pepper could help prevent breast cancer by limiting the growth of stem cells, the small number of cells that fuel a tumor's growth.

Researchers at the University of Michigan Comprehensive Cancer Center have found that when the dietary compounds curcumin, which is derived from the Indian spice turmeric, and piperine, derived from black peppers, were applied to breast cells in culture, they decreased the number of stem cells while having no effect on normal differentiated cells.

Boston, MA -- A new study from researchers at the UK Medical Research Council and the Harvard School of Public Health (HSPH) projects that the severity of the H1N1 flu during the autumn-winter flu season in the U.S. will likely be less than previously feared. The estimates of hospitalizations and life-threatening events in the study are the most accurate to date of the H1N1 pandemic's impact in the U.S. The study appears online on December 7, 2009 in the journal PLoS Medicine.

Body mass index (BMI) and waist circumference are well known risk factors for cardiovascular diseases (CVD), but a new study reported in the European Journal of Cardiovascular Prevention and Rehabilitation (a journal of the European Society of Cardiology) today (7 December) now concludes that these risk factors, when accurately measured by trained staff, can actually predict the risk of fatal and non-fatal disease.(1) The findings, which emerged from a large prospective study of more than 20,000 Dutch men and women aged 20-65 years begun in 1993, show that the associations of BMI and

Men of all ages treated for prostate cancer with androgen deprivation therapy, specifically with gonadotropin-releasing hormone agonists (GnRH), have an increased risk of diabetes and cardiovascular disease, according to a new study published online December 7 in the Journal of the National Cancer Institute.

Previous studies indicate that older men who take androgen deprivation therapy for prostate cancer are at an increased risk for diabetes and cardiovascular disease, but the relationship between the two among men of all ages is unclear.