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Transplanted stem cells hoped to be able to regenerate damaged heart muscle in first heart attack victims

Rush cardiologists are hoping that transplanted stem cells can regenerate damaged heart muscle in those who experience a first heart attack. The study involves an intravenous infusion of adult mesenchymal stem cells from healthy donor bone marrow that might possibly reverse damage to heart tissue.

28 Apr 2006

Combinatorial approach found to reverse the onset of type 1 diabetes

A major finding, which represents an important step toward a potential cure for type 1 (insulin-dependent) diabetes, has been made by a research team at the La Jolla Institute for Allergy & Immunology (LIAI). The team, led by Matthias von Herrath, M.D., an internationally recognized expert on the molecular basis of type 1 diabetes, used a combinatorial treatment approach in laboratory mice and found it reversed recent onset type 1 diabetes in the majority of animals tested.

28 Apr 2006

Enzyme discovery could reduce Kaposi sarcoma tumour growth and lead to drugs suitable for treating other viral cancers

A report in the Journal of Biological Chemistry shows that inhibition of heme oxygenase-1, an enzyme involved in iron metabolism, reduces Kaposi sarcoma tumor growth. This discovery could result in the production of new drugs to treat this and other viral cancers.

28 Apr 2006

Study indicates how drug efficacy can be increased by manipulating the signalling mechanism

Researchers believe they have found a way to change the action of 60 percent of currently available medications, in some cases making them many times more effective, according to an article published in the April 21 edition of the journal Science. The discovery has the potential to improve treatments for diseases including heart disease, cancer, diabetes, depression and arthritis. The study describes a new way to manipulate perhaps the most important signaling mechanism in human cells: G-protein coupled receptors (GPCRs).

28 Apr 2006

Researchers figure out how nuclear pores duplicate before cells divide

Researchers have long wondered how nuclear pores - the all-important channels that control the flow of information in and out of a cell's nucleus - double in number to prepare for the split to come when a cell divides. Now, for the first time, scientists at the Salk Institute for Biological Studies watched as new funnel-like pore structures formed from scratch, and inserted themselves into the nuclear membrane.

28 Apr 2006

Finding indicate why some kinds of Leukemia are more aggressive than others

New clues to why some kinds of leukemia are more aggressive and deadly than others are coming from research examining the types of genetic damage that allow some blood cells to grow out of control, scientists report.

28 Apr 2006

Polycomb proteins key factors in influencing the direction of embryonic stem cell development

Embryonic stem cells may one day provide a means to treat disease, but according to two new reports, they are already revealing remarkable insights into the mysteries of human biology. How humans manage to develop from a single fertilized egg into the trillions of cells that make up a mature adult remains a poorly understood process. Now, using both human and mouse embryonic stem cells, researchers have mapped how a key developmental ingredient controls the genome.

28 Apr 2006

Discovery brings embryonic stem cell medicine a step closer

A team of scientists announced a critical step on the path of realizing the promise of embryonic stem (ES) cells for medicine. The researchers have discovered unique molecular imprints coupled to DNA in mouse ES cells that help explain the cells' rare ability to form almost any body cell type. These imprints, or "signatures," appear near the master genes that control embryonic development and probably coordinate their activity in the early stages of cell differentiation. Not only do these findings help to unlock the basis for ES cells' seemingly unlimited potential, they also suggest ways to understand why ordinary cells are so limited in their abilities to repair or replace damaged cells.

26 Apr 2006

Studies indicate stem cells are flexible enough to become any cell in the body

Two studies in the April 21, 2006 Cell report new details of the "genetic program" that affords embryonic stem cells the flexibility to give rise to any cell type in the body. Both groups identified mechanisms by which the embryonic stem cells of mice or humans keep from going down any one particular developmental path--that of muscle or nervous tissue, for example--while remaining "poised for activation."

26 Apr 2006

Studies indicate stem cells are flexible enough to become any cell in the body

26 Apr 2006

Osteoporosis could be caused by factors other than declining estrogen levels

New evidence in the April 21, 2006 Cell challenges the long-standing notion that declining estrogen levels alone lead to osteoporosis after women go through menopause. The researchers rather found that high levels of pituitary-derived follicle-stimulating hormone (FSH) cause bone loss in mice. The pituitary is a master gland found at the base of the brain.

26 Apr 2006

Enhancing the function of the protein SOCS3 could be a more effective way to regulate cell responses

A discovery made at The Walter and Eliza Hall Institute provides new insights into enhancing the function of the protein SOCS3, which regulates the response of cells to external stimuli.

26 Apr 2006

Preconception health care should be part of routine medical visits

Every visit to the doctor for women of childbearing age should be considered an opportunity to discuss reproductive health- especially since more than half of all pregnancies are unintended, according to a report published today in the U.S. Centers for Disease Control and Prevention's journal Morbidity and Mortality Weekly Report Recommendations and Reports.

26 Apr 2006

Preconception health care should be part of routine medical visits

26 Apr 2006

Protein made by cancer virus explains how the virus spreads

New research shows that a protein made by a cancer virus causes infected immune cells to cling to other immune cells, enabling the virus to spread.

26 Apr 2006

Does secondhand smoke increase the risk of cardiovascular disease in children?

Whether exposure to secondhand smoke increases the chance that children with a family history of cardiovascular disease will develop the disease themselves is under study at the Medical College of Georgia.

26 Apr 2006

Potential vaccine for visceral leishmaniasis developed

Development of a fundamentally new "candidate," or potential, vaccine for visceral leishmaniasis (LEASH-ma-NIGH-a-sis), a parasitic disease that kills about 60,000 people annually, is reported in the current issue of ACS Chemical Biology. Spread by the bite of infected female sand flies, visceral leishmaniasis infects about 500,000 people annually, with the majority of cases occurring in India, Bangladesh, Nepal, Sudan and Brazil.

26 Apr 2006

New technique to speed discovery of drug targets in chemical genetics

Researchers at Fox Chase Cancer Center have developed a new technique to speed discovery of drug targets in chemical genetics. Fox Chase researcher Jeffrey R. Peterson, Ph.D., and his colleagues describe a new way to swiftly find the proteins targeted by small molecule inhibitors during high-throughput screening (HTS) experiments. The new work offers a critical solution to a common stumbling block in this booming field of drug discovery.

26 Apr 2006

New Hybrid virus may aid treatment of cancer

Researchers at The University of Texas M. D. Anderson Cancer Center have created a new class of hybrid virus and demonstrated its ability to find, highlight, and deliver genes to tumors in mice.

26 Apr 2006

Evidence explains relationship between television and poor diet in children

Researchers from the Harvard School of Public Health (HSPH) and Children's Hospital Boston found that kids who spend more time watching television also eat more of the calorie-dense, low-nutrient foods advertised on television. Previous studies had demonstrated that children who watch more television are more likely to be overweight, but this is the first time a research team has found evidence for a mechanism explaining that relationship.

26 Apr 2006