Unraveling Brain Tumors: Molecular Biologists Devise Strategy To Starve Brain Tumors

Brain tumor researchers have found that brain tumors arise from cancer stem cells living within tiny protective areas formed by blood vessels in the brain. Killing those cells is a promising strategy to eliminate tumors and prevents them from re-growing. The researchers have found that drugs that block new blood vessel formation can destroy the protected areas and stop cancer from developing.

Μαζί με τα φάρμακα, δώρο κι ένα hands-free...

Περισσότερες πληροφορίες: http://www.sciencedaily.com/videos/2007/0910-unraveling_brain_tumors.htm

Cancer-killing Viruses Influence Tumor Blood-vessel Growth

Viruses genetically designed to kill cancer cells offer a promising strategy for treating incurable brain tumors such as glioblastoma, but the body's natural defenses often eliminate the viruses before they can eliminate the tumor.

Προσεκτικά ρε....

Περισσότερες πληροφορίες: http://www.sciencedaily.com/releases/2008/06/080610180356.htm

Key Regulator Of DNA Mutations Identified

As a general rule, your DNA is not something you want rearranged. But there are exceptions – especially when it comes to fighting infections. Since the number of microbes in the world far surpasses the amount of human DNA dedicated to combat them, specialized cells in the immune system have adopted an ingenious, if potentially disastrous, strategy for making antibodies. These cells, called B lymphocytes, intentionally mutate their own DNA to ward off invaders they have never seen before.

Αν τα Β-λεμφοκύτταρα ήταν άνθρωποι, θα ήταν χρηματιστές...

Περισσότερες πληροφορίες: http://www.sciencedaily.com/releases/2008/06/080612075846.htm

What's Mine Is Mine: Brain Scans Reveal What's Behind The Aversion To Loss Of Possessions

Did you ever wonder why it is so difficult to part with your stuff? A new study reveals fascinating insights into the specific neuropsychological mechanisms that are linked with the potential loss of possessions. The research, published by Cell Press in the June 12 issue of the journal Neuron, has important implications for both neuroscience and economics and may even explain why you are reluctant to sell your iPod.

Να συμβαίνει και με τις γκόμενες άραγε;

Περισσότερες πληροφορίες: http://www.sciencedaily.com/releases/2008/06/080611135128.htm

Global Warming Could Release Trillions Of Pounds Of Carbon Annually From East Siberia's Vast Frozen Soils

East Siberia's permafrost contains about 500 Gigatons (1100 trillion pounds) of frozen carbon deposits that are highly susceptible to disturbances as the climate warms.

Ντα, ντα...

Περισσότερες πληροφορίες: http://www.sciencedaily.com/releases/2008/06/080611154839.htm

Researchers Build Model Protocell Capable of Copying DNA

Four billion years ago, modern cells were absent on our still-young planet. The simple protocells that are thought to have given rise to Earth's earliest life forms were plentiful, but likely no more than a bit of genetic material surrounded by a hollow membrane.Scientists have now created model protocells in the lab and demonstrated how they might have taken up the nutrients that propelled their growth. Howard Hughes Medical Institute (HHMI) investigator Jack Szostak and his research group fabricated DNA containing vesicles in the lab and showed that nutrients could enter the model protocell. Once inside, the nutrients assembled into a copy of the protocell's genetic material—an essential step in the origin of life.

Κι εγώ που νόμιζα μικρός ότι κάτι τέτοιο φτιάχνεται μόνο από προϋπάρχον παϊδάκι...

Περισσότερες πληροφορίες:
http://www.hhmi.org/news/szostak20080604.html

Drinking Tap Water Disinfected With Chlorine May Harm Fetus, Study Suggests

Drinking water disinfected by chlorine while pregnant may increase the risk of having children with heart problems, cleft palate or major brain defects, according to a study published in BioMed Central's open access journal Environmental Health.

Τι σού 'κανα και πίνεις....

Περισσότερες πληροφορίες:
http://www.sciencedaily.com/releases/2008/06/080602103343.htm