PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Risk of death from ischemic stroke appears to have decreased in US black children

2013-06-25
(Press-News.org) The excess risk of death from ischemic (due to reduced blood flow), but not hemorrhagic (due to bleeding), stroke in US black children has decreased over the past decade, according to a study by Laura L. Lehman, M.D., of Boston Children's Hospital, and colleagues. (Online First)

The study analyzed death certificate data from the National Center for Health Statistics for all children who died from 1988 through 2007 in the United States. Among 1.6 billion person-years of US children (1988-2007), there were 4,425 deaths attributed to stroke, yielding an average of 221 deaths per year; 20 percent were ischemic; 67 percent, hemorrhagic; and 12 percent were unspecified. The relative risk of ischemic stroke mortality for black versus white children decreased from 1.74 from 1988 through 1997 to 1.27 from 1998 through 2007. The ethnic disparity in hemorrhagic stroke mortality, however, remained relatively stable between these 2 periods: black versus white relative risk, 1.90 (1988-1997) and 1.97 (1998-2007), according to the study results.

"The excess risk of death from ischemic, but not hemorrhagic, stroke in US black children has decreased over the past decade. The only major change in childhood stroke care during this period was the initiation of long-term blood transfusion therapy for primary stroke prevention in sickle cell disease," the study concludes. ### (JAMA Pediatr. Published online June 24, 2013. doi:10.1001/jamapediatrics.2013.89. Available pre-embargo to the media at http://media.jamanetwork.com.)

Editor's Note: Please see the articles for additional information, including other authors, author contributions and affiliations, financial disclosures, funding and support, etc.


ELSE PRESS RELEASES FROM THIS DATE:

Health economics assessment of antimicrobial copper for infection control

2013-06-25
A unique health economics assessment of copper's role in preventing healthcare-associated infections (HCAIs) is being presented this week at the WHO's International Conference on Prevention and Infection Control (ICPIC) in Geneva, demonstrating rapid payback on the capital investment. Health economics evaluations are typically applied to medication or surgery costs, but this study from York Health Economics Consortium (YHEC) – part of the University of York in the UK – investigated the economic benefits of applying an engineering and design approach to infection control, ...

Genetic survey sheds light on Oceans' lean, mean microbial machines: UBC research

2013-06-25
Planktonic bacteria inhabiting the world's oceans have streamlined their genetic makeup to become lean, mean survival machines, according to new research by an international team of researchers, including microbiologists at the University of British Columbia. The findings, published this week in the Proceedings of the National Academy of Sciences, is the first direct evidence of widespread genome reduction--organisms evolving to cast off superfluous genes and traits in favor of simpler, specialized genetic make-ups optimized for rapid growth. "Microbes are the dominant ...

Hello, electronic medical records? It's me, unintended consequences

2013-06-25
WASHINGTON — Emergency department information systems (EDIS), a significant focus of both federal legislation and U.S. health care reform, may ultimately improve the quality of medical care delivered in hospitals, but as currently configured present numerous threats to health care quality and patient safety. Two physician work groups in the American College of Emergency Physicians assessed the potential harm lurking in EDIS and make recommendations on how to improve patient safety as these systems are implemented across the country. Their findings were published online ...

Reading DNA, backward and forward

2013-06-25
CAMBRIDGE, Mass. — MIT biologists have discovered a mechanism that allows cells to read their own DNA in the correct direction and prevents them from copying most of the so-called "junk DNA" that makes up long stretches of our genome. Only about 15 percent of the human genome consists of protein-coding genes, but in recent years scientists have found that a surprising amount of the junk, or intergenic DNA, does get copied into RNA — the molecule that carries DNA's messages to the rest of the cell. Scientists have been trying to figure out just what this RNA might be ...

'Nerdy' mold needs breaking to recruit women into computer science

2013-06-25
The 'computer nerd' is a well-known stereotype in our modern society. While this stereotype is inaccurate, it still has a chilling effect on women pursuing a qualification in computer science, according to a new paper by Sapna Cheryan from the University of Washington in the US, and colleagues. However, when this image is downplayed in the print media, women express more interest in further education in computer science. The work is published online in Springer's journal, Sex Roles. Despite years of effort, it has proven difficult to recruit women into many fields that ...

Kidney cancer progression linked to shifts in tumor metabolism

2013-06-25
Investigators in The Cancer Genome Atlas (TCGA) Research Network have uncovered a connection between how tumor cells use energy from metabolic processes and the aggressiveness of the most common form of kidney cancer, clear cell renal cell carcinoma (ccRCC). Their findings demonstrate that normal metabolism is altered in ccRCC tumor cells, and involves a shift from using one metabolic pathway to another. This change – termed a metabolic shift – correlates with tumor stage and severity in some cases. The scientists also found mutations in a pathway that may cause increased ...

'Singing' rats show hope for older humans with age-related voice problems

2013-06-25
AUDIO: Rats like those used in University of Illinois speech and hearing sciences professor Aaron Johnson's study make ultrasonic vocalizations (USVs) that are above the range of human hearing, but special... Click here for more information. CHAMPAIGN, Ill. — A new study shows that the vocal training of older rats reduces some of the voice problems related to their aging, such as the loss of vocal intensity that accompanies changes in the muscles of the larynx. This is an ...

Migrating animals add new depth to how the ocean 'breathes'

2013-06-25
The oxygen content of the ocean may be subject to frequent ups and downs in a very literal sense — that is, in the form of the numerous sea creatures that dine near the surface at night then submerge into the safety of deeper, darker waters at daybreak. Research begun at Princeton University and recently reported on in the journal Nature Geoscience found that animals ranging from plankton to small fish consume vast amounts of what little oxygen is available in the ocean's aptly named "oxygen minimum zone" daily. The sheer number of organisms that seek refuge in water ...

Enhancing RNA interference

2013-06-25
CAMBRIDGE, Mass. — Nanoparticles that deliver short strands of RNA offer a way to treat cancer and other diseases by shutting off malfunctioning genes. Although this approach has shown some promise, scientists are still not sure exactly what happens to the nanoparticles once they get inside their target cells. A new study from MIT sheds light on the nanoparticles' fate and suggests new ways to maximize delivery of the RNA strands they are carrying, known as short interfering RNA (siRNA). "We've been able to develop nanoparticles that can deliver payloads into cells, ...

Starting on 3 drugs at time of diagnosis benefits Type 2 diabetics

2013-06-25
SAN ANTONIO (June 24, 2013) — Patients with type 2 diabetes fare significantly better if they are started on three medications at the time of diagnosis than if they are prescribed a single drug and have other therapies added later, a San Antonio researcher said June 22 at the 73rd Scientific Sessions of the American Diabetes Association in Chicago. The findings, from a study funded by the association, could revise the way physicians manage the endocrine disease. Comparison UT Medicine San Antonio physician Ralph DeFronzo, M.D., chief of the Diabetes Division in the ...

LAST 30 PRESS RELEASES:

ASU researchers to lead AAAS panel on water insecurity in the United States

ASU professor Anne Stone to present at AAAS Conference in Phoenix on ancient origins of modern disease

Proposals for exploring viruses and skin as the next experimental quantum frontiers share US$30,000 science award

ASU researchers showcase scalable tech solutions for older adults living alone with cognitive decline at AAAS 2026

Scientists identify smooth regional trends in fruit fly survival strategies

Antipathy toward snakes? Your parents likely talked you into that at an early age

Sylvester Cancer Tip Sheet for Feb. 2026

Online exposure to medical misinformation concentrated among older adults

Telehealth improves access to genetic services for adult survivors of childhood cancers

Outdated mortality benchmarks risk missing early signs of famine and delay recognizing mass starvation

Newly discovered bacterium converts carbon dioxide into chemicals using electricity

Flipping and reversing mini-proteins could improve disease treatment

Scientists reveal major hidden source of atmospheric nitrogen pollution in fragile lake basin

Biochar emerges as a powerful tool for soil carbon neutrality and climate mitigation

Tiny cell messengers show big promise for safer protein and gene delivery

AMS releases statement regarding the decision to rescind EPA’s 2009 Endangerment Finding

Parents’ alcohol and drug use influences their children’s consumption, research shows

Modular assembly of chiral nitrogen-bridged rings achieved by palladium-catalyzed diastereoselective and enantioselective cascade cyclization reactions

Promoting civic engagement

AMS Science Preview: Hurricane slowdown, school snow days

Deforestation in the Amazon raises the surface temperature by 3 °C during the dry season

Model more accurately maps the impact of frost on corn crops

How did humans develop sharp vision? Lab-grown retinas show likely answer

Sour grapes? Taste, experience of sour foods depends on individual consumer

At AAAS, professor Krystal Tsosie argues the future of science must be Indigenous-led

From the lab to the living room: Decoding Parkinson’s patients movements in the real world

Research advances in porous materials, as highlighted in the 2025 Nobel Prize in Chemistry

Sally C. Morton, executive vice president of ASU Knowledge Enterprise, presents a bold and practical framework for moving research from discovery to real-world impact

Biochemical parameters in patients with diabetic nephropathy versus individuals with diabetes alone, non-diabetic nephropathy, and healthy controls

Muscular strength and mortality in women ages 63 to 99

[Press-News.org] Risk of death from ischemic stroke appears to have decreased in US black children