Body

Heart researchers at the Center for Translational Medicine at Jefferson Medical College have used gene therapy to reverse heart failure in animals. In addition, they found that this gene therapy strategy had "unique and additive effects" to currently used, standard heart failure drugs called beta-blockers.

Call it the cellular equivalent of big glasses, a funny nose and a fake mustache.

Bone marrow stem cells attracted to the site of a cancerous growth frequently take on the outward appearance of the malignant cells around them, University of Florida researchers report in a paper to be published in the August issue of Stem Cells.

Long before animals with limbs (tetrapods) came onto the scene about 365 million years ago, fish already possessed the genes associated with helping to grow hands and feet (autopods) report University of Chicago researchers.Paddlefish fins exhibit a unique pattern of Hox expression previously thought present only in the developing hands and feet of land vertebrates (tetrapods). This result supports the notion that fossil fish already possessed the genetic toolkit needed to evolve hands, feet, fingers and toes.

Could the food we eat be contributing to the continuing rise of antibiotic-resistant infections? Harmless and even beneficial bacteria that exist in our food supply may also be carrying genes that code for antibiotic resistance. Once in our bodies, could they transmit the resistance genes to disease-causing bacteria?

Circadian clocks regulate the timing of biological functions in almost all higher organisms. Anyone who has flown through several time zones knows the jet lag that can result when this timing is disrupted.

Now, new research by Cornell and Dartmouth researchers explains the biological mechanism behind how circadian clocks sense light through a process that transfers energy from light to chemical reactions in cells.

Leave it to white Canadians to tell African-Americans how they feel about people with health problems.

A study by the University of Alberta, published in the Journal of Clinical Epidemiology, says African Americans appear to perceive people with extreme health problems as less productive or valuable

The study examined the differences in preferences for the EQ-5D health states among African Americans, Hispanics, and other races living in the United States.

Two new papers demonstrate that adolescent female sheep that become pregnant before they have achieved their full growth may not be able to supply enough nourishment for their fetuses to develop without physical deficits.

These studies may also have implications for managing pregnancies of adolescent human females, who, in increasing numbers worldwide, are bearing offspring before they have finished growing.

A new study in the May issue of the Journal of Wildlife Management reports that scientists from the New York State Museum, Wildlife Conservation Society and other groups have teamed up with the New York State Department of Criminal Justice to developed a new technique that uses fingerprints to track the fisher--an elusive member of the weasel family, and the only carnivore species known to have unique fingerprints.Scientists recovered this camera trap photo of a fisher, an elusive member of the weasel family. Credit: Wildlife Conservation Society

In the tropics, even the birds know how to relax better than those in the north. Tropical birds expend less energy at rest than do birds living in more northern climates, according to a study published online this week in the Proceedings of the National Academy of Sciences.Take a tip from tropical birds. Enjoy life a little.

Thymic nurse cells were given their name because of their intimate relationship with developing T cells (thymocytes) in the thymus.