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Showing releases 401-425 out of 620 releases.
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Public Release: 30-Jan-2013
Exercise can slow onset of Alzheimer’s memory loss — scientists identify link
Keeping active can slow down the progression of memory loss in people with Alzheimer’s disease, a study has shown.
The Journal of Alzheimer's Disease
Contact: Emma Thorne
emma.thorne@nottingham.ac.uk
44-011-595-15793
University of Nottingham
Public Release: 29-Jan-2013
Neural Regeneration Research
Regulation of KATP channels suppresses the toxic effects of Aβ25–35
A study reported in the Neural Regeneration Research (Vol. 8, No. 1, 2013) showed that amyloid-β peptide (25–35) increases mitochondrial membrane potential and intracellular reactive oxygen species levels, resulting in PC12 cell damage.
Contact: Meng Zhao
nrr@nrronline.org
86-138-049-98773
Neural Regeneration Research
Public Release: 29-Jan-2013
Neural Regeneration Research
Aberrant pyramidal tract following traumatic brain injury
The pyramidal tract is a major neuronal pathway for mediation of voluntary movements in the human brain. The aberrant pyramidal tract refers to the collateral pathway of the pyramidal tract through the medial lemniscus in the brainstem.
Contact: Meng Zhao
nrr@nrronline.org
86-138-049-98773
Neural Regeneration Research
Public Release: 29-Jan-2013
Neural Regeneration Research
Brain distribution of radial glial cells during salmon growth and development
A lot of radial glial cells persist in a fish brain during adulthood, which ensures the capacity for brain development throughout the whole life. In spite of a certain data present in the literature, the role of radial glial cells in a neurogenesis process in adult animal remains poorly understood.
Contact: Meng Zhao
nrr@nrronline.org
86-138-049-98773
Neural Regeneration Research
Public Release: 29-Jan-2013
Nature Geoscience
Tiny fossils hold answers to big questions on climate change
A new study reveals a unique 12,000 year record of marine algae fossils that may hold clues about past climate change.
Natural Environment Research Council
Contact: Lindsay Brooke
44-011-595-15751
University of Nottingham
Public Release: 29-Jan-2013
Proceedings of the National Academy of Sciences
Tooth development and weaning age in wild chimpanzees
A study finds that the emergence of the first permanent teeth does not correlate with weaning age in chimpanzees, a finding that may have implications for theories about the evolution of human life history. Among primates, the pace of first molar emergence in the mouth is believed to track the schedule of growth and reproduction, but how dental development relates to nursing behavior, solid food consumption, and maternal reproductive state remains unclear.
Contact: PNAS News Office
PNASnews@nas.edu
202-334-1310
Proceedings of the National Academy of Sciences
Public Release: 29-Jan-2013
Proceedings of the National Academy of Sciences
Species displacement among disease-causing mosquitoes
Researchers have uncovered a tactic used by the Asian tiger mosquito Aedes albopictus to supplant the yellow fever mosquito, Aedes aegypti, in much of its former habitat across the southeastern United States. Aedes albopictus arrived in Houston, Texas, in the 1980s on a tire shipment from Japan and invaded most areas of the Southeast within 3 years, forcing A. aegypti out of its niche.
Contact: PNAS News Office
PNASnews@nas.edu
202-334-1310
Proceedings of the National Academy of Sciences
Public Release: 29-Jan-2013
Proceedings of the National Academy of Sciences
A superbug's secret to spreading antibiotic resistance
Researchers have uncovered how Staphylococcus aureus spreads multi-drug resistance to other bacteria. S. aureus infections have become increasingly difficult to treat as strains emerge that are resistant to powerful antibiotics such as methicillin and vancomycin.
Contact: PNAS News Office
PNASnews@nas.edu
202-334-1310
Proceedings of the National Academy of Sciences
Public Release: 29-Jan-2013
Proceedings of the National Academy of Sciences
A peptide antagonist that may shrink enlarged prostate glands
A study reports that a gastrin-releasing peptide (GRP) antagonist reduces prostate size in a rat model of benign prostatic hyperplasia (BPH), a progressive, age-related proliferation of prostatic tissues characterized by prostate enlargement and lacking effective treatments. Andrew V. Schally and colleagues found that a potent GRP antagonist, RC-3940-II, inhibited cell proliferation and reduced cell volume in human prostate epithelial and stromal cell lines, and reduced prostate size in a rat model of BPH.
Contact: PNAS News Office
PNASnews@nas.edu
202-334-1310
Proceedings of the National Academy of Sciences
Public Release: 29-Jan-2013
Proceedings of the National Academy of Sciences
Earth's upper atmosphere may contain large amounts of bacteria
Microorganisms abound 5-9 miles above Earth's surface and could have a strong impact on cloud formation and climate, according to a study. Natasha DeLeon-Rodriguez and colleagues analyzed bacteria and fungi found in upper troposphere samples collected by researchers from NASA and elsewhere during numerous flights, including intercontinental journeys, in cloudy and cloud-free air masses before, during, and after the two major 2010 tropical hurricanes Earl and Karl.
Contact: PNAS News Office
PNASnews@nas.edu
202-334-1310
Proceedings of the National Academy of Sciences
Public Release: 29-Jan-2013
Proceedings of the National Academy of Sciences
The origins and refinement of an ancient tool-making industry
The ancient Acheulean tool-making industry originated in the region spanning southern Ethiopia and northern Kenya, a study suggests. Homo erectus is thought to have fashioned the large, double-sided cleavers, picks, and hand axes typical of the Acheulean industry by chipping flakes from local stone.
Contact: PNAS News Office
PNASnews@nas.edu
202-334-1310
Proceedings of the National Academy of Sciences
Public Release: 28-Jan-2013
How is influenza transmitted between people?
Major new study will further uncover how influenza virus is transmitted between people.
Journal of Infectious Diseases
Contact: Charlotte Anscombe
charlotte.anscombe@nottingham.ac.uk
44-011-574-84417
University of Nottingham
Public Release: 28-Jan-2013
Journal of Geophysical Research - Atmospheres
Black carbon is a much larger cause of climate change than previously assessed
Black carbon is the second largest man-made contributor to global warming
and its influence on climate has been greatly underestimated, according to the first quantitative
and comprehensive analysis of this pollutant’s climate impact.
Contact: Kate Ramsayer
kramsayer@agu.org
Wiley
Public Release: 26-Jan-2013
Journal of Clinical Investigation
Temple research may lead to new strategies against sepsis
Scientists at the Center for Translational Medicine at the Temple University School of Medicine are inching closer to solving a long-standing mystery in sepsis, a complex and often life-threatening condition that affects more than 400,000 people in the U.S. every year.
Contact: Jeremy Walter
Jeremy.Walter@tuhs.temple.edu
215-707-7882
Temple University Health System
Public Release: 25-Jan-2013
Science
Solving the proton radius puzzle
A new experiment confirms that the proton is smaller than previously believed. The findings offer clues to solving the so-called "proton radius puzzle", which continues to spark discussion over the exact size of the proton among researchers.
Contact: Natasha Pinol
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
Public Release: 25-Jan-2013
Science
Despite doubts, cataloging Earth’s full biodiversity is doable
With a realistic surge of effort, most plant and animal species could be named within the present century, Mark Costello and colleagues argue in this Review. Many in the scientific community have said that discovering all of the world’s species is impossible, but Costello and colleagues dispute the main claims behind this pessimistic view.
Contact: Natasha Pinol
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
Public Release: 25-Jan-2013
Science
Long-sought phenomenon found in transient stellar events
Stellar outbursts used to be lumped into two categories: novae or supernovae. But, over the years, researchers have recognized another class of outbursts with luminosities between those of novae and supernovae, called intermediate-luminosity red transients or ILRTs.
Contact: Natasha Pinol
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
Public Release: 25-Jan-2013
Science
Mutations in regulatory regions promoting tumors too?
Until now, sequencing studies have identified many recurrent mutations within the protein-coding regions of human cancer genes but very few mutations involving the regulatory, or non-coding, regions of those genes. Two new studies in this week’s issue of Science Express, however, demonstrate that about 71 percent of human melanomas harbor one of two somatic mutations in the TERT gene, which encodes a subunit of telomerase, the enzyme that caps the ends of chromosomes.
Contact: Natasha Pinol
scipak@aaas.org
202-326-6440
American Association for the Advancement of Science
Public Release: 25-Jan-2013
Nano Research
Branched Co3O4/Fe2O3 nanowires as high capacity lithium-ion battery anodes
A novel Co3O4/α-Fe2O3 branched nanowire heterostructure is
hydrothermally synthesized, which consists of primary Co3O4 nanowire
trunks directly grown on Ti substrate, and dense, short Fe2O3 nanowire
branches grown on Co3O4 surface. These Co3O4/α-Fe2O3 branched
nanowires provide efficient charge and ion transport pathways, large
surface area, high theoretical Li+ storage capacity, and reduced
electrode aggregation, and can serve as an excellent lithium-ion
battery anode material with a high reversible capacity of ~ 980 mAh/g.
Contact: Jin Ren
renj@mail.tup.tsinghua.edu.cn
Tsinghua University Press
Public Release: 24-Jan-2013
Science Translational Medicine
'Self-eating' digestive enzymes linked to shock, organ failure
Leakage of pancreatic enzymes into the gut can lead to shock, a life-threatening medical condition linked to sepsis and multi-organ failure, a new study reports. There are currently no approved treatments for shock.
Contact: Natasha Pinol
scipak@aaas.org
202-334-1310
American Association for the Advancement of Science
Public Release: 23-Jan-2013
SCIENCE CHINA Physics, Mechanics & Astronomy
A special issue of sprintronics in Science China: Physics, Mechanics & Astronomy
Science China Physics, Mechanics & Astronomy invited some Chinese experts and researchers in the field of spintronics to write a series of review articles in this special issue, in order to assist undergraduate, master’s and doctoral students, as well as young researchers to understand this fast growing field. This issue was published in Science China Physics, Mechanics & Astronomy, 2013, 56(1): 1-246
National Natural Science Foundation of China
Contact: Huang Yanhong
hyh@scichina.org
Science China Press
Public Release: 23-Jan-2013
JAMA
Hospital readmission for older patients often for different illness
Among approximately 3 million Medicare patients hospitalized for heart failure, heart attack, or pneumonia, readmissions were frequent throughout the 30 days following the hospitalization, and resulted from a wide variety of diagnoses that often differed from the cause of the index hospitalization, according to a study appearing in the Jan. 23/30 issue of JAMA.
Contact: Karen Peart
karen.peart@yale.edu
203-432-1326
The JAMA Network Journals
Public Release: 23-Jan-2013
JAMA
Emergency department use within 30 days of hospital discharge common
In a study that included more than 4 million patients, nearly 20 percent of hospitalizations resulted in at least 1 acute care encounter within the 30 days following discharge, with emergency department visits accounting for about 40 percent of post-discharge hospital-based acute care use, according to a study appearing in the Jan. 23/30 issue of JAMA.
Contact: Karen Peart
karen.peart@yale.edu
203-432-1326
The JAMA Network Journals
Public Release: 23-Jan-2013
Journal of Neuroscience
Less tau reduces seizures and sudden death in severe epilepsy
Deleting or reducing expression of a gene that carries the code for tau, a protein associated with Alzheimer's disease, can prevent seizures in a severe type of epilepsy linked to sudden death, said researchers at Baylor College of Medicine and the Mayo Clinic in Jacksonville, Fla., in a report in the current issue of the Journal of Neuroscience.
Contact: Graciela Gutierrez
ggutierr@bcm.edu
713-798-4710
Baylor College of Medicine
Public Release: 22-Jan-2013
Canadian Medical Association Journal
Hypertension in pregnancy increases risk of end-stage renal disease
Women with hypertensive disorders in pregnancy are at higher risk of chronic kidney disease and end-stage renal disease (ESRD) compared to women without the disorders, according to a study in CMAJ (Canadian Medical Association Journal) (pre-embargo link only)
Contact: Kim Barnhardt
Kim.Barnhardt@cmaj.ca
613-520-7116 x2224
Canadian Medical Association Journal
Showing releases 401-425 out of 620 releases.
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