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ADHD an advantage for nomadic tribesmen?

A study of Kenyan nomads found that an ADHD-associated gene variant is linked to better health in the nomadic population, but malnourishment in settled individuals. This suggests that behavior differences associated with ADHD may be more or less effective depending on the environment.

SourceBMC (BioMed Central)·JournalBMC Evolutionary Biology·DateJun 9, 2008

How the brain separates audio signals from noise

A new study published in PLoS Biology uses magnetoencephalography to record brain activity as humans detect target tones in a complex auditory scene. The researchers find that the awareness of these sounds correlates with activity in high-level auditory regions, not the initial cortical region where sound is processed. This novel study...

SourcePLOS·JournalPLOS Biology·DateJun 9, 2008

Arsenic and new rice

Researchers have discovered a family of transporters called NIPs that can move arsenite across plant cell membranes, reducing toxic arsenic content. The findings suggest that some NIPs can even clear cells of toxic arsenite, potentially enabling plant detoxification.

SourceBMC (BioMed Central)·JournalBMC Biology·DateJun 9, 2008

Is tap water safe for expectant mothers?

A study published in Environmental Health found that drinking tap water disinfected by chlorine while pregnant may increase the risk of certain birth defects. Exposure to high levels of chlorination by-products was associated with a significant increased risk of ventricular septal defects, cleft palate, and anencephalus.

SourceBMC (BioMed Central)·JournalEnvironmental Health·DateJun 2, 2008

Researchers bring new meaning to the term 'computer bug'

US researchers have created living computers by genetically altering bacteria, solving the burnt pancake problem in a matter of flips. The breakthrough showcases computing in living cells, offering potential advantages over conventional computers, including parallel processing and self-repair mechanisms.

SourceBMC (BioMed Central)·JournalJournal of Biological Engineering·DateMay 19, 2008

Sticky gecko feet: The role of temperature and humidity

Researchers at the University of Akron discovered that temperature and humidity significantly impact a gecko's ability to stick to glass. The study revealed that under humid conditions, geckos can cling with twice the force as in dry conditions. Conversely, high temperatures reduce their adhesion, making humidity level less crucial.

SourcePLOS·JournalPLOS ONE·DateMay 13, 2008

Neglected tropical diseases rarely make the headlines

A new study found that only 113 articles about neglected tropical diseases were published in leading international media from 2003 to 2007. This lack of coverage is particularly concerning given the significant burden of NTDs on public health, including widespread illness, poverty, and suffering.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateMay 13, 2008

Why did the EPA fire a respected toxicologist?

The EPA dismissed Deborah Rice, a highly respected toxicologist, after the chemical industry complained about her views on deca's health hazards. Herbert Needleman argues that this trend is not new and unique, citing his own dismissal for speaking out on lead poisoning.

SourcePLOS·JournalPLOS Biology·DateMay 12, 2008

Taking the sex out of sexual health screening

A study found that young Australian women would accept age-based chlamydia screening, but prefer it be offered universally, rather than based on their sexual history. The researchers suggest that detailed sexual history should not be required before testing women for chlamydia to improve screening rates and reduce stigma.

SourceBMC (BioMed Central)·JournalBMC Infectious Diseases·DateMay 8, 2008

BILBO1 a bearer of bad fortune for trypanosomes

Researchers identified BILBO1 as crucial for Flagellar Pocket formation in trypanosomes. The protein is essential for the structure's functions, including endo- and exocytosis. Inhibition of BILBO1 function is fatal to the parasite.

SourcePLOS·JournalPLOS Biology·DateMay 5, 2008

Cutting through the stigma

A year-long pilot project trained barbers as peer educators to reach low-literacy rural communities in India, distributing educational materials and condoms. The program showed positive effects, including increased social recognition for women peer educators and a rise in customers among barber clients.

SourceBMC (BioMed Central)·JournalHuman Resources for Health·DateApr 17, 2008

Scientists discover new arenavirus associated with hemorrhagic fever

A newly discovered arenavirus, Chapare virus, has been identified in a fatal hemorrhagic fever case in rural Bolivia. The virus produces clinical hemorrhagic symptoms similar to those associated with other New World arenaviruses, but genetically it is distinct from Junin, Machupo, Guanarito, and Sabia viruses.

SourcePLOS·JournalPLOS Pathogens·DateApr 17, 2008

How smoking encourages infection

New research reveals that nicotine reduces neutrophil ability to seek and destroy bacteria, contributing to increased susceptibility to infection in chronic tobacco users. The study also found that nicotine suppresses oxidative burst and increases matrix metalloproteinase-9 release, leading to impaired neutrophil function.

SourceBMC (BioMed Central)·JournalBMC Cell Biology·DateApr 14, 2008

Gene-environment interaction in yeast gene expression

A new study published in PLoS Biology shows that gene-environment interactions play a crucial role in determining thousands of traits in yeast, with the environment having a bigger effect on regulated genes than direct mechanisms. The research reveals intriguing interactions between genetic and environmental factors.

SourcePLOS·JournalPLOS Biology·DateApr 14, 2008

Forests' long-term potential for carbon offsetting

Researchers found that large-scale plantations in tropical regions could sequester significant amounts of carbon, potentially offsetting up to 5-7% of global CO2 emissions. However, the effectiveness of these plantations is limited by social, economic, and institutional barriers, as well as uncertainties in land use.

SourceBMC (BioMed Central)·JournalCarbon Balance and Management·DateApr 14, 2008

A landmark law for open access to biomedical research

The new NIH policy requires all funded research articles to be made freely available in PubMedCentral within 12 months of publication. This move aims to increase public access to scientific literature and promote better use of the scientific literature through libraries like PMC.

SourcePLOS·JournalPLOS Biology·DateApr 7, 2008

How fast can a rat smell?

Researchers found that rats use exploratory sniffing to discriminate odors quickly, with neural responses confirming minimal processing takes place in the olfactory bulb. The study suggests odorant identity may be encoded by sequence of responses rather than peak activation.

SourcePLOS·JournalPLOS Biology·DateApr 7, 2008

Transmitting prion diseases in milk

A study published in BMC Veterinary Research found that lambs can contract scrapie, a fatal neurodegenerative disease, by consuming milk from infected ewes. The researchers detected the prion protein PrPd in intestinal tissues of both infected and control lambs, suggesting that the infectious agent can be shed and transmitted.

SourceBMC (BioMed Central)·JournalBMC Veterinary Research·DateApr 7, 2008

Researchers uncover new genetic links to psoriasis

A comprehensive study of the genetic basis of psoriasis has discovered seven new sites of common DNA variation that increase the risk of this skin condition. The variations were found to be strongly linked to psoriatic arthritis and other autoimmune disorders, paving the way for more targeted therapies.

SourcePLOS·JournalPLOS Genetics·DateApr 3, 2008

Ayurvedic nightshade deadly for dengue mosquito

Research published in BMC Complementary and Alternative Medicine suggests that the berries of Solanum villosum have potential for keeping mosquitoes at bay. The study found that S. villosum was particularly effective at eliminating Stegomyia aegypti larvae, which can spread diseases like dengue fever.

SourceBMC (BioMed Central)·JournalBMC Complementary and Alternative Medicine·DateApr 2, 2008

Researchers discover new species of disease-causing Leptospira

Researchers have isolated a new species of Leptospira, causing the disease leptospirosis, from domestic rats in the Peruvian Amazon. The discovery highlights the importance of region-specific Leptospira in diagnosis and reveals a higher incidence of leptospirosis than previously suspected.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateApr 1, 2008

Neurons hard wired to tell left from right

Researchers have identified neurons that form different spiral-shaped axons on the left and right sides of the brain, suggesting a possible explanation for brain asymmetry. The findings provide new insights into how the brain processes information and could lead to a better understanding of cognitive performance and social behavior.

SourceBMC (BioMed Central)·JournalNeural Development·DateMar 30, 2008

Making protected areas pay biodiversity dividends

A new essay proposes revising protected area categories to reflect biodiversity outcomes, with potential huge implications for preserving the earth's rapidly diminishing biodiversity. The change aims to make significant gains in biodiversity conservation and stanch species loss, habitat destruction, and ecosystem services degradation.

SourcePLOS·JournalPLOS Biology·DateMar 17, 2008

An anti-inflammatory response to the vegan diet

A study published in Arthritis Research & Therapy found that a gluten-free vegan diet can lower cholesterol and oxidized LDL levels, while raising natural antibodies against phosphorylcholine in patients with rheumatoid arthritis. This may help protect against heart attacks and stroke.

SourceBMC (BioMed Central)·JournalArthritis Research & Therapy·DateMar 17, 2008

Australian men care about their health

A study of Australian men's attitudes towards health reveals that they are not the disinterested pub-goers often stereotyped. Instead, they proactively monitor their health and seek medical attention only when necessary. The researchers identified four key factors influencing men's help-seeking decisions.

SourceBMC (BioMed Central)·JournalBMC Health Services Research·DateMar 13, 2008

Pain-free childbirth? Get real!

A review of published literature on women's expectations and experience of pain and pain relief in labour reveals a gap between expectations and reality. Most women underestimate the intensity of pain they will experience and may not be prepared for the possibility that they might need pain relief.

SourceBMC (BioMed Central)·JournalBMC Medicine·DateMar 13, 2008

Improving the quality of laboratory data with computer modeling

Researchers have developed a new statistical model to clean up low-quality HLA data, enabling easier and more cost-effective individual immune system analysis. This advancement has significant implications for transplant medicine, disease diagnosis, and understanding viral evolution.

SourcePLOS·JournalPLOS Computational Biology·DateFeb 28, 2008

Scientists unravel the genetic coding of the pea

Researchers have created a genetic reference collection of mutant Pisum sativum plants, enabling the investigation of essential genes using TILLING (Targeting Induced Local Lesions IN Genomes) technique. This new tool has major benefits for crop breeders worldwide, providing an alternative to Agrobacterium-based techniques.

SourceBMC (BioMed Central)·JournalGenome Biology·DateFeb 25, 2008

First malaria map in 40 years shows extent of disease burden

A new global malaria map highlights the 2.37 billion people at risk from Plasmodium falciparum, with almost one billion in areas where the risk of infection is extremely low. The map aims to help researchers and funding agencies allocate resources more effectively by understanding the relative risk affecting different regions.

SourceWellcome Trust·JournalPLOS Medicine·DateFeb 25, 2008

Global malaria map

A global malaria risk map has been released, revealing high-risk areas and providing estimates of people living in low-risk zones. The map identifies regions where existing control strategies can be used to eliminate P. falciparum transmission, potentially reducing deaths in sub-Saharan Africa.

SourcePLOS·JournalPLOS Medicine·DateFeb 25, 2008

ICU nurses require training to spot delirium

A basic educational programme boosts ICU nurses' ability to screen for delirium, surpassing expert performance in a standardised format. The programme's combination of lecture and practical exercises rapidly improves the capacity for nurses to perform delirium assessments accurately.

SourceBMC (BioMed Central)·JournalCritical Care·DateFeb 20, 2008

Do animals think like autistic savants?

Researchers argue that autistic savants' exceptional skills come at a cost in other aspects of processing, while animals process sensory inputs according to rules. This shared processing method is thought to be a specialized feature of the left hemisphere, common to both humans and nonhuman animals.

SourcePLOS·JournalPLOS Biology·DateFeb 19, 2008

Study finds that young children bear greatest burden of cholera

A new study found that young children in impoverished regions are disproportionately affected by cholera. The study, published in PLOS Neglected Tropical Diseases, reveals the African site had the highest incidence of cholera, with vaccination and improved water supply considered immediate strategies.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateFeb 19, 2008