Medical Science News

RSS

Human adult stem cells can regenerate damaged heart tissue: Research

Mayo Clinic investigators, with Belgian collaborators, have demonstrated that rationally "guided" human adult stem cells can effectively heal, repair and regenerate damaged heart tissue. The findings called "landmark work" in an accompanying editorial appear in today's Journal of the American College of Cardiology.

17 Aug 2010

Experimental drug benefits women with advanced ovarian or breast tumours caused by BRCA gene faults

An experimental drug called olaparib has been shown to shrink tumours in women whose advanced cancers were caused by faults in their BRCA genes.

17 Aug 2010

Scientists identify possible therapeutic strategy for reducing leukemia risk from chemotherapy

A UCSF-led team has discovered at least one key reason why blood stem cells are susceptible to developing the genetic mutations that can lead to adult leukemia. Their finding also may explain, they say, why some other age-related hematological disorders develop.The study, reported in "Cell Stem Cell" and reviewed in Cell Stem Cell and Cell, opens a new frontier for studying the molecular underpinnings of adult leukemia.

17 Aug 2010

Researchers visualize ruptures of atherosclerotic plaques with multi-color CT and gold nanoparticles

Researchers from Mount Sinai School of Medicine have for the first time developed a way to visualize coronary artery plaques vulnerable to rupture using multi-color computed tomography (CT), an innovation that will lead to better and earlier diagnosis of cardiovascular disease. The data are published in the September issue of Radiology.

17 Aug 2010

Study finds abnormal expression of miRNAs can contribute to human diseases

Researchers at Tufts University School of Medicine and Tufts Medical Center have identified an RNA sequence that promotes increased numbers of specific microRNAs (miRNAs), molecules that regulate cell growth, development, and stress response. The discovery helps researchers understand the links between miRNA expression and disease, including heart disease and cancer. The findings are published in the August 13 issue of Molecular Cell.

17 Aug 2010

Scientists find epigenetic landscape map for tissue differentiation

Having charted the occurrence of a common chemical change that takes place while stem cells decide their fates and progress from precursor to progeny, a Johns Hopkins-led team of scientists has produced the first-ever epigenetic landscape map for tissue differentiation.The details of this collaborative study between Johns Hopkins, Stanford and Harvard appear August 15 in the early online publication of Nature.

17 Aug 2010

High exposure to estrogens may cause gall bladder cancer: Research

A very aggressive disease with a poor prognosis, gallbladder cancer may be connected to higher exposure to estrogens, according to a group of researchers at the University of Houston (UH). Dr. Jan--ke Gustafsson, Robert A. Welch Professor in UH's biology and biochemistry department, described his team's findings in a paper titled "Estrogen-dependent gallbladder carcinogenesis in LXRβ-/- female mice" appearing in a recent issue of the journal Proceedings of the National Academy of Sciences, one of the world's most-cited multidisciplinary scientific serials.

17 Aug 2010

Non-viral gene therapy delays onset of eye disease

In one of only two studies of its kind, a study from researchers at Tufts University School of Medicine and the Sackler School of Graduate Biomedical Sciences at Tufts demonstrates that non-viral gene therapy can delay the onset of some forms of eye disease and preserve vision. The team developed nanoparticles to deliver therapeutic genes to the retina and found that treated mice temporarily retained more eyesight than controls.

17 Aug 2010

SIK2 impacts cell division cycle, regulates ovarian cancer response to chemotherapy: Research

For the first time, Salt Inducible Kinase 2 (SIK2) has been found to play a critical role in cell division and to regulate the response of some ovarian cancers to chemotherapy.Findings were reported by researchers from The University of Texas MD Anderson Cancer Center in the August issue of Cancer Cell. The study adds to growing evidence that combination therapies targeting different phases of the cell division cycle are vital for optimal cancer treatment.

17 Aug 2010

Researchers find link between chronic inflammation and cancer

Virginia Commonwealth University Massey Cancer Center researchers have uncovered a new link between chronic inflammation and cancer. Although cancers do not always cause inflammation, chronic inflammation is known to help tumor cells grow.

17 Aug 2010

Study reveals how galectin-3 carbohydrate-binding protein promotes angiogenesis

A new study describes how a carbohydrate-binding protein, galectin-3, promotes angiogenesis, the growth of new blood vessels. Targeting the protein, scientists identified two approaches that significantly reduced angiogenesis in mice. These discoveries, published online August 16 in The Journal of Experimental Medicine, may lead to novel treatments for diseases caused by excessive angiogenesis, including age-related macular degeneration, cancer, and diabetes.

16 Aug 2010

World's smallest ultrasonic transducers

Scientists and Engineers at The University of Nottingham have built the world's smallest ultrasonic transducers capable of generating and detecting ultrasound.

16 Aug 2010

Arrayit announces addition of 128 new products to life sciences tools portfolio

Arrayit Corporation, a leader in life sciences and healthcare technology, announces today that the company has added 128 new products to its widely-used portfolio of life sciences tools. Arrayit now offers 836 life sciences products to researchers worldwide, all of which can be purchased on-line 24 hours a day at the Arrayit Store. The company has recorded $36.2M in product revenue in the Arrayit Store since its inception.

16 Aug 2010

NIDA grants Selecta Biosciences $3M to develop nicotine vaccine for smoking cessation and relapse prevention

Selecta Biosciences, Inc., a biopharmaceutical company developing synthetic nanoparticle vaccines and immunotherapies, today announced that it has been awarded a grant for $3 million from the National Institute on Drug Abuse (NIDA), an institute within the U.S. National Institutes of Health. The grant is aimed at advancing the development of an enhanced therapeutic nicotine vaccine for the treatment of smoking cessation and relapse prevention.

16 Aug 2010

Scientists use PCT technique to understand physical effects of compression on macromolecules

Scientists are turning to a decades-old technique to better understand the physical effects of compression on macromolecules and how it might impact their research in proteomics, mass spectrometry, protein extraction, and tissue investigations, reports Genetic Engineering & Biotechnology News.

16 Aug 2010

Study finds no effect of siblings on social skills

Growing up without siblings doesn't seem to be a disadvantage for teenagers when it comes to social skills, new research suggests.

16 Aug 2010

Scientists identify genes associated with aggressive breast cancer

Researchers at the University of Gothenburg, Sweden, have for the first time identified 12 genes that could be associated with aggressive breast tumours. The discovery could result in more reliable prognoses and better treatment strategies for patients.

16 Aug 2010

Abnormalities in certain genes may cause autism: Research

Together with colleagues from an international research group, autism researcher Christopher Gillberg of the University of Gothenburg, Sweden, has found in a new study that autism can be partially explained by abnormalities in certain genes. The group's results could, in the long run, pave the way for more appropriate treatments for autism.

16 Aug 2010

MeCP2 protein regulates properties of psychostimulant drugs: Research

When a certain protein is mutated or missing, symptoms of the neurodevelopmental disorder Rett syndrome arise, causing a gradual loss of brain function during early development.This fact led Duke University Medical Center researchers to test a theory that the protein might also contribute to nerve-cell connection (synapse) changes in a fully formed adult mouse brain when exposed to psychostimulant use.

16 Aug 2010

Scientists replace human gene to preserve photoreceptor function in retinal degeneration

The easy accessibility of the eye and the established link between specific genetic defects and ocular disorders offer hope for using gene therapy to provide long-term therapeutic benefit. Two reports in the current issue of Human Gene Therapy, a peer-reviewed journal published by Mary Ann Liebert, Inc., describe the effective replacement of a human gene to preserve photoreceptor function in a mouse model of severe retinal degeneration. The articles are available free online.

16 Aug 2010