الأحد، 15 أبريل 2012

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News


Fine-scale analysis of the human brain yields insight into its distinctive composition

Posted: 12 Apr 2012 09:14 AM PDT

Scientists have identified similarities and differences among regions of the human brain, among the brains of human individuals, and between humans and mice by analyzing the expression of approximately 1,000 genes in the brain. The study sheds light on the human brain in general and also serves as an introduction to what the associated publicly available dataset can offer the scientific community.

Research teams discover cellular system for detecting and responding to poisons and pathogens

Posted: 12 Apr 2012 09:13 AM PDT

Scientists have discovered that animals have a previously unknown system for detecting and responding to pathogens and toxins.

Scientists discover tool that uncrosses chromosomes

Posted: 12 Apr 2012 09:13 AM PDT

Researchers have discovered a key tool that helps sperm and eggs develop exactly 23 chromosomes each. The work, which could lead to insights into fertility, spontaneous miscarriages, cancer and developmental disorders.

Exercise and attitude may be thermostat for hot flashes

Posted: 12 Apr 2012 08:37 AM PDT

Attitude may play an important role in how exercise affects menopausal women, according to researchers, who identified two types of women -- one experiences more hot flashes after physical activity, while the other experiences fewer.

Study resolves debate on human cell shut-down process

Posted: 12 Apr 2012 07:57 AM PDT

Researchers have resolved the debate over the mechanisms involved in the shut-down process during cell division in the body.

Chromosomes organize into 'yarns': May explain why DNA mutations can affect genes located thousands of base pairs away

Posted: 11 Apr 2012 11:43 AM PDT

A new layer in the complex organization of chromosomes has been discovered. Scientists have now shown that chromosomes fold in a series of contiguous "yarns" that harbor groups of genes and regulatory elements, bringing them in contact with each other and allowing them to work in a coordinated manner during development.

Less sleep, disrupted internal 24-hour clock means higher risk of diabetes and obesity

Posted: 11 Apr 2012 11:43 AM PDT

A new study reinforces the finding that too little sleep or sleep patterns that are inconsistent with our body's "internal biological clock" may lead to increased risk of diabetes and obesity.

Studies on resistance against influenza

Posted: 11 Apr 2012 07:27 AM PDT

When swine flu struck Sweden in 2009, it was clear that certain age groups were more vulnerable than others. An epidemiologist is now planning to study immunity against influenza in children.

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