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Science News Archive April 2010 - Page 21


Page 21 of 24

Getting heavier, younger: U-M study shows generational shift in obesity

A new study by the University of Michigan Health System shows that 20% of Americans born between 1966-1985 were obese by age 20-29, a significant increase from previous generations. This trend is expected to worsen racial disparities in health, with black Americans already experiencing a higher burden of obesity-related diseases.

SourceMichigan Medicine - University of Michigan·JournalInternational Journal of Obesity·DateApr 7, 2010

New tool developed for DNA research

A PhD student at the University of Copenhagen has developed a molecular gauge that can measure DNA structure without disrupting it, using luminescent markers. This tool holds the potential to reveal new insights into DNA function and mechanism, as well as understand how new drugs work.

SourceUniversity of Copenhagen·JournalThe Journal of Physical Chemistry B·DateApr 6, 2010

New study implicates health care utilization, over biology, in colorectal cancer disparities

A new study by the National Cancer Institute found that health care utilization, rather than biology, plays a more important role in colorectal cancer disparities among African Americans. The study revealed that blacks were less likely to receive follow-up colonoscopies after screening, leading to delayed diagnosis and treatment.

SourceNIH/National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateApr 6, 2010

Blacks have lower follow-up rates after colon cancer screening

A recent study found that blacks in the US are less likely to follow up on abnormal colon cancer screening test results, highlighting disparities in healthcare utilization. The study analyzed data from a large national trial and found that 62.6% of black participants went for a diagnostic colonoscopy, compared to 72.4% of white partici...

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateApr 6, 2010

Unconscious learning uses old parts of the brain

A new study from Karolinska Institutet finds that the limbic striatum, an evolutionarily old part of the brain, is involved in implicit learning of motor sequences. This discovery sheds light on fundamental learning systems shared with primitive vertebrates and has implications for developing treatments for diseases like Parkinson's.

SourceKarolinska Institutet·JournalProceedings of the National Academy of Sciences·DateApr 6, 2010

Pitt/Magee research finds women with preeclampsia have fewer blood vessel precursor cells

A study by Pitt/Magee research team found that women with preeclampsia have reduced numbers of endothelial progenitor cells, which are thought to help grow and maintain blood vessels. This adaptation didn't happen in patients with preeclampsia, a pregnancy disorder characterized by high blood pressure.

Mount Sinai study finds only a weak link between fruit and vegetable and reduced risk of cancer

A Mount Sinai study of over 400,000 people found that high fruit and vegetable consumption reduces cancer risk by only 3%, with benefits limited to certain populations. The researchers concluded that the association is weak and may not justify increased dietary recommendations.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalJNCI Journal of the National Cancer Institute·DateApr 6, 2010

Sensitive nerve cells

Scientists at the Max Planck Institute of Neurobiology have demonstrated using a new animal model that nerve cells do not begin to die until three conditions are met in Parkinson's disease. This finding is an important step forward in understanding this illness and may offer a potential new direction for therapy.

SourcePLOS·JournalPLOS Biology·DateApr 6, 2010

Synergy between behavioral and pharmacologic interventions for ADHD

A study published in Biological Psychiatry compared the effects of medication, motivation, and a combination of both on response inhibition in children with ADHD. The results showed that stimulant medication tends to normalize brain function, while motivational incentives also play a role in improving performance.

SourceElsevier·JournalBiological Psychiatry·DateApr 6, 2010

Scientific risk-taking by young students fades with age

A University of Oregon study of 585 elementary school students found that students' willingness to take intellectual risks in science decreases with age. However, students who were interested in science and felt supported by their teachers were significantly more likely to engage in intellectual risk-taking. The study suggests that tea...

SourceUniversity of Oregon·JournalJournal of Research in Science Teaching·DateApr 6, 2010

Gene variation among kidney donors associated with graft failure

A recent study published in JAMA has identified a significant association between gene variation in kidney donors and increased risk of graft failure. The researchers found that donors with certain genetic variants had poorer graft survival rates, highlighting the potential for genetic biomarkers to predict transplant outcomes.

SourceJAMA Network·JournalJAMA·DateApr 6, 2010

Community-based approaches are best to reduce deaths among newborns

Newborn mortality in low-income countries is a significant concern, with many infants going unseen by health services. Community-based approaches, such as community mobilization and home visits by community workers, can improve newborn survival rates, according to a study published in PLoS Medicine.

SourcePLOS·JournalPLOS Medicine·DateApr 6, 2010

The immune system's guard against cancer

Scientists discovered that beta-interferon inhibits tumor growth by blocking its connection to the blood circulatory system and reducing the production of growth factors. This effect was seen in mice where tumors grew slower and formed fewer metastases, highlighting a new potential target for cancer therapy.

SourceHelmholtz Association·JournalJournal of Clinical Investigation·DateApr 6, 2010