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Faster and cheaper DNA sequencing techniques will likely improve care for patients with breast cancer but also create challenges for clinicians as they counsel patients on their treatment options. Those are among the conclusions of a study published recently in the BJS (British Journal of Surgery). The findings provide insights into how genetic advances will soon be affecting patient care.

Cells usually self-destruct when irreparable glitches occur in their DNA. Programmed cell death, or apoptosis, helps insure that cells with damaged DNA do not grow and replicate to produce more mutated cells. Apoptosis thereby helps protect and insure the survival of the organism.

At the GSA Drosophila Research Conference, TinTin Su, Ph.D., will report that a dying Drosophila melanogaster larvae cell alerts neighboring cells that they are in danger of suffering a similar fate.

In previous research (Nature, July 2013), UC Berkeley scientists Beatriz Vicoso, Ph.D., and Doris Bachtrog, Ph.D., determined that genes on the so-called "dot chromosome," or fourth chromosome, of the fruit fly Drosophilia melanogaster are X-linked in three other related fly species.

Skeletal muscle cells with unevenly spaced nuclei, or nuclei in the wrong location, are telltale signs of such inherited muscle diseases as Emery-Dreifuss muscular dystrophy, which occurs in one out of every 100,000 births, and centronuclear myopathy, which affects one out of every 50,000 infants.

What goes wrong during myogenesis, the formation and maintenance of muscle tissue, to produce these inherited muscle diseases?

As Rachel Carson predicted 50 years ago in her groundbreaking book Silent Spring, crop pests are capable of outwitting the chemical compounds known as xenobiotics that are devised to kill them. This development of resistance to insecticides is a serious problem because it threatens crop production and thereby can influence the availability and costs of many foods as well as the economy.

A Stanford University lab whose studies have advanced scientific understanding of resistance and tolerance defense mechanisms to bacterial and viral pathogens has now turned its sights on cancer.

"Just as there are resistance and tolerance mechanisms that target invading microbes, we predicted that there are also resistance and tolerance mechanisms that control a host's response to cancer," David Schneider, Ph.D., who heads the lab, and postdoctoral researcher Adler R. Dillman, Ph.D., wrote in their GSA Drosophila Research Conference abstract.

Earlier this year, researchers in David J. Begun, Ph.D.'s lab at UC Davis reported that they had uncovered 142 de novo genes that originated in the ancestral non-coding DNA sequences and are segregating in Drosophila melanogaster populations.

Dr. Begun and postdoctoral scientist Li Zhao, Ph.D., identified de novo genes by comparing the RNA transcripts of the testes of several wild-derived strains of D. melanogaster to the standard reference genome for this fly species and to the RNA transcripts and genomes of two other Drosophila species.

A large study of child growth patterns in 36 developing countries published in The Lancet Global Health journal has found that, contrary to widely held beliefs, economic growth is at best associated with very small, and in some cases no declines in levels of stunting, underweight, and wasting. This suggests that investment in interventions that directly impact health and nutrition are needed to tackle child undernutrition.

Boston, MA —A large study of child growth patterns in 36 developing countries finds that, contrary to widely held beliefs, economic growth has little to no effect on the nutritional status of the world's poorest children. The study, from researchers at Harvard School of Public Health (HSPH), the University of Göttingen, Germany, ETH Zürich, Switzerland, and the Indian Institute of Technology Gandhinagar, found that economic growth was associated with small or no declines in stunting, underweight, and wasting—all signs of undernutrition.

March 26, 2014, Hong Kong, China –The international open-access journal GigaScience (a BGI and BioMed Central journal) today announces a major step forward for reproducible research and public data-sharing in the neurosciences with the publication and release of a huge cache of electrophysiology data resources. Important for studying visual development, many groups have been using multielectrode array recordings to look at developmental changes and the effects of various genetic defects on the spontaneous activity of the retina.

By reptile standards, alligators are positively chatty. They are the most vocal of the non-avian reptiles and are known to be able to pinpoint the source of sounds with accuracy. But it wasn't clear exactly how they did it because they lack external auditory structures.

In a new study, an international team of biologists shows that the alligator's ear is strongly directional because of large, air-filled channels connecting the two middle ears. This configuration is similar in birds, which have an interaural canal that increases directionality.

Scientists monitored Cuvier's beaked whales' record-breaking dives to depths of nearly two miles below the ocean surface and some dives lasted for over two hours, according to results published March 26, 2014, in the open access journal PLOS ONE by Gregory Schorr from Cascadia Research Collective and colleagues.

Humpback whales share a simplistic skin bacterial community across populations, according to results published March 26, 2014, in the open access journal PLOS ONE by Amy Apprill from the Woods Hole Oceanographic Institution and colleagues. The overall bacterial communities differ by geographic area and by metabolic state, such as feeding versus starving during migration and breeding.

Although the targeted cancer treatment drug crizotinib is very effective in causing rapid regression of a particular form of lung cancer, patients' tumors inevitably become resistant to the drug. Now a new drug called ceritinib appears to be effective against advanced ALK-positive non-small cell lung cancer (NSCLC), both in tumors that have become resistant to crizotinib and in those never treated with the older drug. The results of a phase 1 clinical trial conducted at centers in 11 countries are reported in the March 27 New England Journal of Medicine.

PHILADELPHIA (March 26, 2014) – Despite the popular conception of giant pandas as continually chomping on bamboo to fulfill a voracious appetite for this reedy grass, new research from the Monell Center reveals that this highly endangered species also has a sweet tooth. A combination of behavioral and molecular genetic studies demonstrated that the giant panda both possesses functional sweet taste receptors and also shows a strong preference for some natural sweeteners, including fructose and sucrose.