Medical Science News

RSS

Variations among individual organisms attributed to differences in genes, environment or chance

Biologists attribute variations among individual organisms to differences in genes or environment, or both. But a new study of nematode worms with identical genes, raised in identical environments, has revealed another factor: chance.

19 Feb 2010

Rib-X Pharmaceuticals co-founder discovers new ribosomal structures of antibiotics

Rib-X Pharmaceuticals, Inc., a development-stage antibiotics company with a broad product pipeline based on its innovative discovery platform, and Yale University today announced the discovery by Thomas Steitz, Ph.D., co-founder of Rib-X and Yale University professor, of important new ribosomal structures of antibiotics, enabling the potential creation of novel treatments for drug resistant infections, including resistant tuberculosis (TB).

19 Feb 2010

University of Missouri researchers visualize "terminals" inside proline degrading enzyme

If subway terminals didn't exist and people had to exit subway stations to switch subway lines, transit time would increase. People also may encounter distractions, such as grabbing a cup of coffee, instead of getting on the other line. Molecules also use "terminals" to save transit time during enzyme-catalyzed processes. Using advanced X-radiation techniques, University of Missouri researchers were able to visualize one of these terminals inside of an enzyme that degrades proline, which is an amino acid that has a central role in metabolism.

19 Feb 2010

Major challenge facing today's toxicologists: Developing test systems to predict toxicity of compounds

Attagene Inc., a leader in developing innovative technologies for analyzing gene regulatory pathways, announced today the online publication of a paper in Chemical Research in Toxicology, a journal of the American Chemical Society, that highlights results of their collaborative work with the Environmental Protection Agency's National Center for Computational Toxicology (NCCT).

19 Feb 2010

Cancer genomes: Distinguishing between 'driver' and 'passenger' mutations

A new study of mutations in cancer genomes shows how researchers can begin to distinguish the 'driver' mutations that push cells towards cancer from the 'passenger' mutations that are a by-product of cancer cell development. The study also shows that at least one in nine genes can be removed without killing human cells.

19 Feb 2010

Harboring NRF2 gene may increase probability of being an endurance athlete

A few minor variations in one gene may make a difference in athletic endurance, according to a new study from Physiological Genomics.

19 Feb 2010

Most genetic abnormalities shared across multiple cancers

An international team of researchers has created a genome-scale map of 26 different cancers, revealing more than 100 genomic sites where DNA from tumors is either missing or abnormally duplicated compared to normal tissues. The study, the largest of its kind, finds that most of these genetic abnormalities are not unique to one form of cancer, but are shared across multiple cancers. The work appears in the February 18 issue of the journal Nature.

19 Feb 2010

Study analyzes genome and exome sequence data from hunter-gatherer participants of South Africa

In a study published online today in Nature, a team of researchers from Penn State University and the University New South Wales present the complete genome sequences of an indigenous hunter-gatherer from the Kalahari Desert and a Bantu from southern Africa, along with three additional whole exome sequences of Kalahari hunter-gatherers.

19 Feb 2010

Simple molecular kit to reprogram any cell of the body into another

In an effort to sidestep the ethical dilemma involved in using human embryonic stem cells to treat diseases, scientists are developing non-controversial alternatives: In particular, they are looking for drug-like chemical compounds that can transform adult skin cells into the stem cells now obtained from human embryos. That's the topic of a fascinating article in Chemical & Engineering News (C&EN), ACS' weekly newsmagazine.

19 Feb 2010

Emerging concepts from gene regulation studies in immune cells

The seventh meeting in the “Emergence and Convergence” series jointly organized by La Fondation IPSEN and Nature brings together today in San Antonio (Texas, USA) leading experts to discuss concepts emerging from gene regulation studies in immune cells that have led to insights into the initiation and maintenance of epigenetic chromatin marks necessary for proper differentiation and function of these cells in the immune system.

19 Feb 2010

Mechanism by which Plasmodium replicates itself in human blood to spread disease identified

Malaria remains one of the most deadly infectious diseases. Yet, how Plasmodium, the malaria parasite, regulates its infectious cycle has remained an enigma despite decades of rigorous research.

19 Feb 2010

Study shows how genes and environmental factors influence common human diseases

A UCLA study reveals how human genes interact with their environment to boost disease risk. Published in the Feb. 18 online edition of the American Journal of Human Genetics, the findings shed light on why the search for specific gene variants linked to human diseases can only partly explain common disorders.

19 Feb 2010

AGH neurosurgeons explore new therapeutic approach for brain tumor

Neurosurgeons at Allegheny General Hospital (AGH) are exploring use of a drug that illuminates brain tumor cells to determine if the experimental visualization technique will enhance their ability to surgically excise tumors and improve patient survival.

19 Feb 2010

VIRxSYS announces results from prophylactic HIV vaccine study at 2010 CROI conference

VIRxSYS Corporation, a privately held company developing vaccines and RNA therapies for serious human diseases such as HIV and cardiovascular diseases, announced results from its prophylactic HIV vaccine (VRX1023) study in Rhesus Macaque monkeys during a presentation today at the 2010 Annual Conference on Retroviruses and Opportunistic Infections (CROI) in San Francisco, CA.

19 Feb 2010

Research shows natural compound in marine sponges reduces cancer cell motility

Investigators at Sanford-Burnham Medical Research Institute (Sanford-Burnham, formerly Burnham Institute for Medical Research) led by Kristiina Vuori, M.D., Ph.D., have discovered that the natural compound sceptrin, which is found in marine sponges, reduces cancer cell motility (movement) and has very low toxicity.

19 Feb 2010

ATM tumor-suppressor also recognizes damage caused by ROS and orders autophagy

ATM, a protein that reacts to DNA damage by ordering repairs or the suicide of the defective cell, plays a similar, previously unknown role in response to oxidative damage outside of the nucleus, researchers report this week in the online version of the Proceedings of the National Academy of Sciences.

19 Feb 2010

UCSF team: NIH ethics guidelines for embryonic stem cell research need to be modified

A UCSF team, led by bioethicist Bernard Lo, MD, recommends that the National Institutes of Health ethics guidelines for embryonic stem cell research be modified to better protect the rights of individuals donating egg or sperm to patients undergoing in vitro fertilization.

19 Feb 2010

Mechanosensitive ion channels play a key role in pain sensation

Humans and animals are able to perceive even the slightest vibration and touch of the skin. Mechanosensitive ion channels play a crucial role in the mediation of these sensations. Ion channels are pores in the cell membrane which are highly responsive to external signals.

19 Feb 2010

Johns Hopkins Kimmel Cancer Center scientists develop genome-based blood tests for cancer

Scientists at the Johns Hopkins Kimmel Cancer Center have used data from the whole genome sequencing of cancer patients to develop individualized blood tests they believe can help physicians tailor patients' treatments. The genome-based blood tests, believed to be the first of their kind, may be used to monitor tumor levels after therapy and determine cancer recurrence.

19 Feb 2010

Cellular metabolism plays a key role in cancer development

It is not unusual to hear people blame their metabolism after gaining a few pounds. But changes in metabolism - the process that shapes how our bodies turn food into energy -- can have much more sinister effects than making it hard to fit into your favorite jeans.

19 Feb 2010

Medical Science News

Variations among individual organisms attributed to differences in genes, environment or chance

Rib-X Pharmaceuticals co-founder discovers new ribosomal structures of antibiotics

University of Missouri researchers visualize "terminals" inside proline degrading enzyme

Major challenge facing today's toxicologists: Developing test systems to predict toxicity of compounds

Cancer genomes: Distinguishing between 'driver' and 'passenger' mutations

Harboring NRF2 gene may increase probability of being an endurance athlete

Most genetic abnormalities shared across multiple cancers

Study analyzes genome and exome sequence data from hunter-gatherer participants of South Africa

Simple molecular kit to reprogram any cell of the body into another

Emerging concepts from gene regulation studies in immune cells

Mechanism by which Plasmodium replicates itself in human blood to spread disease identified

Study shows how genes and environmental factors influence common human diseases

AGH neurosurgeons explore new therapeutic approach for brain tumor

VIRxSYS announces results from prophylactic HIV vaccine study at 2010 CROI conference

Research shows natural compound in marine sponges reduces cancer cell motility

ATM tumor-suppressor also recognizes damage caused by ROS and orders autophagy

UCSF team: NIH ethics guidelines for embryonic stem cell research need to be modified

Mechanosensitive ion channels play a key role in pain sensation

Johns Hopkins Kimmel Cancer Center scientists develop genome-based blood tests for cancer

Cellular metabolism plays a key role in cancer development

How innovation in dried blood spot testing is transforming neurological disease monitoring

Unlocking live single-cell functional insights

How microRNA is transforming science: From discovery to diagnostics

Latest News