science newsletter: Science News SciGuru.com

Δευτέρα 4 Νοεμβρίου 2013

Science News SciGuru.com

Scientists find a surprising degree of variation among genomes of individual neurons from the same brain
New method quickly determines if chest pain is acute coronary syndrome
Zipper-Like Nanoswitches for Graphene based Bioelectronics

Scientists find a surprising degree of variation among genomes of individual neurons from the same brain

Posted: 04 Nov 2013 07:06 AM PST

It was once thought that each cell in a person's body possesses the same DNA code and that the particular way the genome is read imparts cell function and defines the individual. For many cell types in our bodies, however, that is an oversimplification. Studies of neuronal genomes published in the past decade have turned up extra or missing chromosomes, or pieces of DNA that can copy and paste themselves throughout the genomes.

New method quickly determines if chest pain is acute coronary syndrome

Posted: 04 Nov 2013 06:59 AM PST

Researchers at Karolinska Institutet have tested a new method for quickly ruling out acute myocardial infarction or other serious acute coronary disease in Emergency department patients complaining of chest pains. The method, which is presented in a new doctoral thesis, seems able to reduce the percentage of cardiac patients in Sweden who need to be kept in hospital under observation by 10 to 20 percent. A number of hospitals in Stockholm and Uppsala will start applying the method this winter.

Zipper-Like Nanoswitches for Graphene based Bioelectronics

Posted: 04 Nov 2013 06:55 AM PST

Recent advances in graphene research provide various possibilities to enhance performance characteristics and current approaches to design new bio-devices. Especially, smart and flexible bioelectronics on graphene has emerged as a new frontier in this area. Graphene has started to be seen an ideal signal transducer and promising alternative for the production of low cost bioelectronics devices. However, control and regulation on biological systems are always desired for advance applications and productions.