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Balance organs affect brain blood flow

Researchers found that stimulation of inner ear balance organs affects brain blood flow in opposition to changes in blood pressure. The study may lead to new treatment options for conditions such as aging-related vestibular loss and orthostatic intolerance.

SourceBMC (BioMed Central)·JournalBMC Neuroscience·DateSep 22, 2009

Echoes of phlogiston in stem cell biology

Stem cell biology faces challenges in defining molecular characteristics, with potency and self-renewal not exclusive to stem cells. A new perspective suggests considering 'stemness' as a system property, rather than individual cell traits, which may lead to improved understanding of cancer stem cells.

SourceBMC (BioMed Central)·JournalJournal of Biology·DateSep 21, 2009

Minimal training saves lives with airway mask

A study found that minimal training can significantly improve first responders' speed and effectiveness when inserting laryngeal masks during life-saving CPR or mouth-to-mouth. Regular refresher courses are recommended to maintain skills, as proficiency declines after six months of non-use.

SourceBMC (BioMed Central)·JournalBMC Emergency Medicine·DateSep 21, 2009

GPs' gut feelings defined

Researchers define 'gut feelings' experienced by GPs as two types: sense of alarm and reassurance. The former involves feeling uneasy about possible adverse outcomes, while the latter means feeling secure despite uncertainty. This definition aims to facilitate future research on the effectiveness of 'gut-compass'.

SourceBMC (BioMed Central)·JournalBMC Family Practice·DateSep 16, 2009

Face processing slows with age

Researchers found that elderly individuals have a slower response time when identifying faces, with one component of the brain's reaction being less sensitive to faces. This suggests that age-related decline affects face processing abilities.

SourceBMC (BioMed Central)·JournalBMC Neuroscience·DateSep 8, 2009

No such thing as ethnic groups, genetically speaking

Researchers discovered that genetic differences exist more within Central Asian ethnic groups than between them, indicating a constructed social system rather than common ancestry. This challenges traditional notions of ethnicity and highlights the importance of analyzing genetic data in understanding ethnological issues.

SourceBMC (BioMed Central)·JournalBMC Genetics·DateAug 31, 2009

Excessive radiological imaging explained

A survey of 374 radiologists found that increased use of radiological imaging is driven by new technology, patient informedness, and lower physician tolerances for uncertainty. This can lead to unnecessary investigations, radiation exposure, and healthcare costs.

SourceBMC (BioMed Central)·JournalBMC Health Services Research·DateAug 31, 2009

Urine LAM-ELISA poor at diagnosing TB

A new diagnostic test, urine LAM-ELISA, was tested on 291 Tanzanian patients suspected of having TB and found to have a disappointing sensitivity of 50.7%. The specificity of the test was also low at 87.8%, raising concerns about its reliability as a standalone diagnostic tool.

SourceBMC (BioMed Central)·JournalBMC Infectious Diseases·DateAug 27, 2009

Study shines light on night-time alertness

Research suggests that red light can impact alertness at night via pathways other than the circadian system, contradicting previous assumptions about blue light's dominance. The study found that moderate levels of red light increase alertness in individuals, making it a viable alternative to blue light for improving nighttime alertness.

SourceBMC (BioMed Central)·JournalBMC Neuroscience·DateAug 26, 2009

Animal sacrifice in Brazilian folk religion

In Brazilian folk religion Candomblé, animal sacrifice plays a crucial role in the believers' requests and desires, believed to 'feed' supernatural deities known as orishas. The practice is fundamental to many religions, including Judaism, Christianity, and Islam.

SourceBMC (BioMed Central)·JournalJournal of Ethnobiology and Ethnomedicine·DateAug 25, 2009

Impaired transport in neurons triggers prion disease

A new study reveals that impaired axonal transport in neurons is a key factor in the development of prion diseases. The research shows that clinical symptoms correlate with reduced axonal transport in specific brain centers, providing new insights into the disease.

SourcePLOS·JournalPLOS Pathogens·DateAug 21, 2009

Ghostwriting documents now fully available on PLoS Medicine Web site

The PLOS Medicine journal has made all 1500 ghostwriting documents publicly available, revealing a coordinated campaign by Wyeth and medical writing companies to promote hormone drugs. The editors call for action to eradicate ghost-writing, including retraction of papers and investigation by academic institutions.

SourcePLOS·JournalPLOS Medicine·DateAug 21, 2009

Mexican health care reform has been convoluted and ineffective

A recent analysis published in PLOS Medicine found that twenty-five years of healthcare reforms in Mexico have increased access to medical care, but at the cost of inefficiency and inadequate addressing of health inequities. The study highlights the need for comprehensive reform to improve the Mexican healthcare system.

SourcePLOS·JournalPLOS Medicine·DateAug 17, 2009

eHealth interventions need to be continuously evaluated

A recent study emphasizes the importance of evaluating eHealth interventions to improve the quality and safety of healthcare. Aziz Sheikh and Lorraine Catwell from The University of Edinburgh highlight the need for continuous systemic evaluation of eHealth solutions to address potential risks and challenges.

SourcePLOS·JournalPLOS Medicine·DateAug 17, 2009

It's not easy being gay

A study published in BMC Psychiatry found that lesbian, gay, and bisexual individuals are twice as likely to receive mental health treatment as heterosexuals. The researchers attribute this disparity to higher exposure to discrimination and violence, as well as societal pathologizing of homosexuality.

SourceBMC (BioMed Central)·JournalBMC Psychiatry·DateAug 13, 2009

Bureaucracy stifling studies

A study published in BMC Medical Research Methodology found that general practitioners (GPs) are reluctant to participate in medical research due to administrative challenges. The researchers discovered that non-medical staff often handle first contact with surgeries, making it difficult for doctors to engage with the study.

SourceBMC (BioMed Central)·JournalBMC Medical Research Methodology·DateAug 13, 2009

Orchids and fungi -- partners for life

Researchers have discovered that three Thai orchids use a wide range of fungi to absorb carbon from the soil instead of producing their own organic carbon. The study highlights the complex relationships between plants and fungi in tropical forests, emphasizing the need for further research on these interactions.

SourceBMC (BioMed Central)·JournalBMC Biology·DateAug 13, 2009

Little lifesavers -- kids capable of CPR

A study published in Critical Care found that 86% of nine-year-old students performed CPR correctly four months after receiving basic life support training. The researchers concluded that children's performance would improve over time with periodic retraining, and that CPR education can be effectively implemented in primary schools.

SourceBMC (BioMed Central)·JournalCritical Care·DateJul 30, 2009

Mapping the crocodile genome

Researchers created a genetic linkage map for the saltwater crocodile, facilitating genome scans to identify genes affecting complex traits. The map provides a scaffold for genome sequence assembly and will aid in understanding reptilian molecular evolution.

SourceBMC (BioMed Central)·JournalBMC Genomics·DateJul 28, 2009

Embarrassing illnesses no bar to information sharing

A new study published in BMC Medical Ethics found that the purpose and type of information collection were more important than the individual's condition in determining consent choices. Participants preferred more control over the use of their personal information, especially when it linked to profit or personal details.

SourceBMC (BioMed Central)·JournalBMC Medical Ethics·DateJul 23, 2009

Australia discovered by the 'Southern Route'

Genetic analysis reveals Australian Aborigines originated from south Asia, tracing back to Indian populations with exclusive mutations. This discovery supports archeological evidence of human occupation in Australia dating back to approximately 45 thousand years ago.

SourceBMC (BioMed Central)·JournalBMC Evolutionary Biology·DateJul 21, 2009

Erythropoietin boosts brainpower

A study published in BMC Biology found that erythropoietin boosts brainpower in healthy young mice, improving sequential learning and memory components. The growth factor showed superior performance in associative, operant, and discriminant learning tasks.

SourceBMC (BioMed Central)·JournalBMC Biology·DateJul 7, 2009

Inbred bumblebees less successful

Researchers found that inbred bumblebee colonies suffer from decreased growth rates, lower offspring production, and reduced colony survival. The presence of diploid males, produced at the expense of female workers, has a detrimental effect on colony fitness.

SourceBMC (BioMed Central)·JournalBMC Evolutionary Biology·DateJul 1, 2009