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Science News for June 19, 2015


Thick cortex could be key in Down syndrome

New brain-imaging research has found that the cortex is thicker on average in youth with Down Syndrome than in typically developing youth, despite lower overall cortical volume. This finding may provide new insights into early onset Alzheimer's disease susceptibility in individuals with Down Syndrome.

SourceDrexel University·JournalCerebral Cortex·DateJun 19, 2015

How to wipe out polio and prevent its reemergence

A new study using disease-transmission models shows that silent transmission of poliovirus could continue for more than three years with no reported cases. To ensure eradication, aggressive surveillance and vaccination campaigns must continue in endemic countries after the last reported case.

SourcePLOS·JournalPLOS Biology·DateJun 19, 2015

Study links heartbeat to female libido

Researchers found that women with below-average heart rate variability were more likely to experience difficulties with sexual arousal, highlighting the link between physiological and psychological factors in female sexuality. The study's findings could lead to the development of new treatments for female sexual dysfunction.

SourceUniversity of Texas at Austin·JournalApplied Psychophysiology and Biofeedback·DateJun 19, 2015

Autism: The value of an integrated approach to diagnosis

A study combining clinical assessment, genomic analysis, and electroencephalography identified specific gene combinations in autistic patients that distinguished them from those with intellectual disabilities. This integrated approach provides new prospects for diagnosis and understanding of autism's physiological mechanisms.

Taking control of cancer -- from your mobile phone

A consortium of healthcare professionals, game developers, and oncology educators is developing intelligent 'games' to help cancer patients manage their illness through mobile phones. The iManageCancer project aims to provide psychological benefits, greater wellbeing, quality of life, and social support for young cancer patients.

Sourceecancermedicalscience·Journalecancermedicalscience·DateJun 19, 2015

PrEP is not linked to greater risk for depression

A randomized trial of daily oral HIV pre-exposure prophylaxis (PrEP) in men and transgender women who have sex with men found no link between Truvada use and depression. Half of participants reported clinically significant depression, highlighting the need for further research on PrEP's impact during vulnerable times.

SourceGladstone Institutes·JournalAIDS and Behavior·DateJun 19, 2015

TGen study identifies first genetic mutation associated with Aicardi syndrome

A genetic mutation in the TEAD1 gene has been identified as the first associated with Aicardi syndrome, a debilitating childhood neurological condition. The study found that children with this disorder experience severe symptoms, including seizures, retina damage, and brain abnormalities, and that boys may also be affected.

SourceThe Translational Genomics Research Institute·JournalInvestigative Ophthalmology & Visual Science·DateJun 19, 2015

The successful ovulation of 100 eggs from 1 female mouse

Researchers developed an ultra-superovulation method to increase the number of eggs obtained from genetically modified mice, reducing the need for multiple females and improving efficiency in IVF and embryo transfers. The breakthrough could lead to a significant reduction in the number of experimental animals used in research.

SourceKumamoto University·JournalPLOS ONE·DateJun 19, 2015

Access to electricity is linked to reduced sleep

Research comparing traditional hunter-gatherer communities with and without access to electricity reveals that those with electricity sleep an average of one hour less per night than those without. The study suggests that artificial light disrupts humans' natural circadian clock and sleep-wake cycle, leading to shorter nights.

SourceUniversity of Washington·JournalJournal of Biological Rhythms·DateJun 19, 2015

How to wipe out polio and prevent its re-emergence

A new study by University of Michigan graduate research fellow Micaela Martinez-Bakker reveals that silent transmission of poliovirus could continue for more than three years with no reported cases. To ensure eradication, aggressive surveillance programs and vaccination campaigns must continue in endemic countries.

SourceUniversity of Michigan·JournalPLOS Biology·DateJun 19, 2015