Archive for July, 2006

HIV hides from drugs

Monday, July 31st, 2006

UC Davis scientists have discovered that the human immunodeficiency virus, the virus that causes AIDS, is able to survive efforts to destroy it by hiding out in the mucosal tissues of the intestine. They also observed that HIV continues to replicate in the gut mucosa, suppressing immune function in patients being treated with antiretroviral treatment–even when blood samples from the same individuals indicated the therapy was working. Results of the three-year study appear in the August issue of the Journal of Virology (available online today at http://jvi.asm.org)……..

Malignant Melanoma Secretes Embryo Protein

Monday, July 31st, 2006

A Northwestern University research group has discovered that aggressive melanoma cells secrete Nodal, a protein that is critical to proper embryo formation. An article describing this research was published recently in the advanced online issue of the journal Nature Medicine. The scientists identified the potent and highly unstable embryonic growth factor by injecting aggressive melanoma cells into developing zebrafish embryos, which were used as “biosensors” for tumor cell-derived signals, and were consequently able to induce ectopic (abnormal) embryonic skull and backbone (axes) formation……..

Diagnosis And Referrals For Kidney Disease

Monday, July 31st, 2006

Results of a national study of 304 U.S. physicians, in which “mock” patients’ symptoms were presented for diagnosis, suggest that a sizeable percentage of primary care doctors probably fail to properly diagnose and refer patients with chronic kidney disease (CKD). Their findings, published in the recent issue of the American Journal of Kidney Diseases, show that of 126 kidney specialists surveyed, 97 percent properly diagnosed CKD and 99 percent would have recommended specialized kidney care for the “patient.” But only 59 percent of the 89 family physicians and 78 percent of 89 general internal medicine physicians fully recognized the signs and symptoms of CKD. And referrals to a nephrologist were made by only 76 percent of the family physicians and only 81 percent of general internists……..

Interventions Should Start After The First Puff

Monday, July 31st, 2006

In this research study, Gervais and his colleagues describe the sequence and timing of 12 milestones (6 correlation to cigarette use and 6 to symptoms of nicotine dependence) among grade 7 students. They observed that symptoms of nicotine dependence can take hold long before regular smoking, even after the first puff in some cases……..

High Blood Pressure Diet it could save you

Monday, July 31st, 2006

Abstract: Blood High Monitor Pressure
Tag: Blood High Monitor Pressure
One of the controlling causes for deaths in United States is diseases
of the heart and blood vessels. People with hypertension, or
high blood pressure, are the ones higher likely to develop these
diseases. Thus, it is most important to try and lower the
elevated blood pressure.
Hypertension is incurable in […]

Genetic Model For Parkinson’s Disease

Sunday, July 30th, 2006

In the mouse model generated by the research team, a gene called TFAM is automatically deleted from the genome in dopamine nerve cells only. Without TFAM, mitochondria cannot function normally. The so called respiratory chain is compromised and energy production decreases severely in the dopamine cells……..

meditation and cognitive impairment

Sunday, July 30th, 2006

Scientists at the University of Pennsylvania School of Medicine are examining the effectiveness of meditation on early cognitive impairment. Once this new study is completed, the results could help answer lingering questions over whether or not stress-reducing techniques and mind exercises can lessen or even prevent cognitive decline. This is the first study at Penn’s new “Center for Spirituality and the Mind,” which evolved from work initiated in Penn’s Department of Radiology to embrace and encourage scientists from the fields of medicine, pastoral care, religious studies, social work, nursing, and bioethics to expand our knowledge of how spirituality may affect the human brain……..

Radiation Cocktail For Breast Cancer

Saturday, July 29th, 2006

A carefully determined mixture of electron and x-ray beams precisely treated breast tumors while significantly reducing collateral skin damage in 78 patients, scientists will report on August 1 at the annual meeting of the American Association of Physicists in Medicine in Orlando. The key to choosing the right mixture of beams, as well as their individual properties, was a sophisticated computer approach developed by medical physicists Jinsheng Li, Ph.D. (Jinsheng.Li@fccc.edu) and Chang-Ming Ma, Ph.D. of Fox Chase Cancer Center in Philadelphia……..

Pigeons provide clues

Saturday, July 29th, 2006

Through studying pigeons with genetic heart disease, scientists at Wake Forest University School of Medicine have discovered a clue about why some patients’ heart vessels are prone to close back up after angioplasty. “We identified a regulator of genes that controls the growth of artery smooth muscle cells,” said William Wagner, Ph.D., senior researcher. “Learning to modulate the uncontrolled growth of these cells could potentially solve the problem of vessels re-closing after angioplasty”……..

gene therapy for hereditary heart conditions

Saturday, July 29th, 2006

A new way of delivering corrective genes with a single injection into a vein holds promise for long-lasting therapys of hereditary diseases of the heart, University of Florida scientists report. UF scientists used the approach to successfully reverse symptoms in mice with a form of muscular dystrophy that damages the heart. They also tested the virus-based delivery method in monkeys and found genes were readily absorbed by heart muscle cells, and the effect persisted for months……..