ScienceDaily Health Headlines -- for Saturday, May 21, 2011 ~ techdeck

Sabtu, 21 Mei 2011

ScienceDaily Health Headlines -- for Saturday, May 21, 2011

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ScienceDaily Health Headlines

for Saturday, May 21, 2011

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Gene variation linked to infertility in women, study finds (May 20, 2011) -- A variation in a gene involved in regulating cholesterol in the bloodstream also appears to affect progesterone production in women, making it a likely culprit in a substantial number of cases of their infertility, a new study suggests. ... > full story

Dietary supplement can protect against pre-eclampsia, new study suggests (May 20, 2011) -- A dietary supplement containing an amino acid and antioxidant vitamins, given to pregnant women at high risk of pre-eclampsia, can reduce the occurrence of the disease, finds a new study. ... > full story

Buying 'legal highs' from the Internet is risky business (May 20, 2011) -- Many drugs sold as "legal highs" on the Internet do not contain the ingredients they claim. Some instead contain controlled substances and are illegal to sell over the internet. These are findings of a doctor, who bought a range of tablets from different websites to see what each contained. ... > full story

Researchers create nanopatch for the heart (May 20, 2011) -- Engineers have a promising new approach to treating heart-attack victims. The researchers created a nanopatch with carbon nanofibers and a polymer. In laboratory tests, natural heart-tissue cell density on the nanoscaffold was six times greater than the control sample, while neuron density had doubled. ... > full story

High iron, copper levels block brain-cell DNA repair (May 20, 2011) -- Excessive levels of copper and iron in the brain and DNA damage by reactive oxygen species are associated with most cases of Alzheimer's, Parkinson's and other neurodegenerative disorders. Researchers have discovered how these two pieces of the neurodegenerative disease puzzle fit together. ... > full story

Wolbachia bacteria reduce parasite levels and kill the mosquito that spreads malaria (May 20, 2011) -- Researchers found that artificial infection with different Wolbachia bacteria strains can significantly reduce levels of the human malaria parasite, Plasmodium falciparum, in the mosquito, Anopheles gambiae. The investigators also determined that one of the Wolbachia strains rapidly killed the mosquito after it fed on blood. According to the researchers, Wolbachia could potentially be used as part of a strategy to control malaria if stable infections can be established in Anopheles. ... > full story

Breaking rules makes you seem powerful (May 20, 2011) -- When people have power, they act the part. Powerful people smile less, interrupt others and speak in a louder voice. When people do not respect the basic rules of social behavior, they lead others to believe that they have power, according to a new study. ... > full story

From gene to protein: Control is mainly in the cytoplasm, not cell nucleus (May 20, 2011) -- How do genes control us? This fundamental question still remains elusive despite decades of research. Genes are blueprints for proteins, but it is the proteins that actually carry out vital functions. But how is protein production controlled? Researchers have now comprehensively quantified gene expression for the first time and found out that control mainly occurs in the cytoplasm of the cell and not in the cell nucleus. ... > full story

Building a better mouse model to study depression (May 20, 2011) -- Researchers have developed a mouse model of major depressive disorder (MDD) that is based on a rare genetic mutation that appears to cause MDD in the majority of people who inherit it. The findings could help clarify the brain events that lead to MDD and contribute to new and better means of treatment and prevention. ... > full story

Extremely obese children have higher prevalence of psoriasis, higher heart disease risk (May 20, 2011) -- Children who are overweight or obese have a significantly higher prevalence of psoriasis, and teens with psoriasis, regardless of their body weight, have higher cholesterol levels, according to new research. The study findings suggest that higher heart disease risk for patients with psoriasis starts in childhood in the form of higher cholesterol levels. ... > full story

Exercise helps women fight smoking cravings, but effect is short-lived (May 20, 2011) -- For years researchers have found that exercise can curb nicotine cravings, but have struggled to show a practical benefit in trials. Newly published research suggests a reason: the effect is too ephemeral. ... > full story

Sniff sniff: Smelling led to smarter mammals, researchers say (May 20, 2011) -- A rose by any other name would smell as sweet; the saying is perhaps a testament to the acute sense of smell that is unique to mammals. Paleontologists have now discovered that an improved sense of smell jumpstarted brain evolution in the ancestral cousins of present-day mammals. ... > full story