MySDScience's – February 2012 Archive (19)

Scientists Link Evolved, Mutated Gene Module to Syndromic Autism



Image using an electron microscope shows a cilium growing from a neuron. -Gleeson lab, UC San Diego

A team led by researchers at the University of California, San Diego School of Medicine reports that newly discovered mutations in an evolved assembly of genes cause Joubert syndrome, a form of syndromic autism.

The findings are published in the January 26 online issue of Science Express.

Joubert syndrome is…

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Added by MySDScience on February 26, 2012 at 12:00pm — No Comments

Scripps Research Scientists Unlock Evolutionary Secret of Blood Vessels

LA JOLLA, CA, February 21, 2012 – The ability to form closed systems of blood vessels is one of the hallmarks of vertebrate development. Without it, humans would be closer to invertebrates (think mollusks) in design, where blood simply washes through an open system to nourish internal organs. But vertebrates evolved closed circulation systems designed to more effectively carry blood to organs and tissues.

Precisely how that happened has remained a clouded issue. But now, a team of…

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Added by MySDScience on February 21, 2012 at 11:00pm — No Comments

Scripps Research and Sanford-Burnham scientists shed light on how body fends off bacteria

LA JOLLA, Calif., February 16, 2012 – To invade organisms such as humans, bacteria make use of a protein called flagellin, part of a tail-like appendage that helps the bacteria move about. Now, for the first time, a team led by scientists at The Scripps Research Institute and Sanford-Burnham Medical Research Institute has determined the 3D structure of the interaction between this critical bacterial protein and an immune molecule called TLR5, shedding light on how the body protects itself…

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Added by MySDScience on February 16, 2012 at 11:00pm — No Comments

Complex wiring of the nervous system may rely on a just a handful of genes and proteins

LA JOLLA, CA—Researchers at the Salk Institute have discovered a startling feature of early brain development that helps to explain how complex neuron wiring patterns are programmed using just a handful of critical genes. The findings, published in Cell, may help scientists develop new therapies for neurological disorders, such as amyotrophic lateral sclerosis (ALS), and provide insight into certain cancers.

The Salk researchers discovered that only a…

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Added by MySDScience on February 10, 2012 at 12:00pm — No Comments

New Method Makes Culture of Complex Tissue Possible in any Lab



Adah Almutairi

Adah Almutairi, PhD

Scientists at the University of California, San Diego have developed a new method for making scaffolds for culturing tissue in three-dimensional arrangements that mimic those in the body. This advance, published online in the journalAdvanced Materials, allows the production of tissue culture scaffolds containing multiple structurally and chemically distinct layers using common laboratory reagents and…

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Added by MySDScience on February 9, 2012 at 12:00pm — No Comments

Clinical Trial Teaches Binge Eaters to Toss Away Cravings

Of 190 million obese Americans, approximately 10-15 percent engage in harmful binge eating. During single sittings, these over-eaters consume large servings of high-caloric foods. Sufferers contend with weight gain and depression including heart disease and diabetes. A new clinical trial, called Regulation of Food Cues, at UC San Diego Health System, aims to treat binge eating by helping participants to identify real hunger and to practice resistance…

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Added by MySDScience on February 9, 2012 at 12:00pm — No Comments

Electrical Engineers Build “No-Waste” Laser



khajavikhan team

L-R Michael Kats, Aleksandar Simic and Mercedeh Khajavikhan take a break in the optics laboratory.

A team of University of California, San Diego researchers has built the smallest room-temperature nanolaser to date, as well as an even more startling device: a highly efficient, “thresholdless” laser that funnels all its photons into lasing, without any waste.

The two new lasers require very low power to operate, an…

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Added by MySDScience on February 9, 2012 at 12:00pm — No Comments

UC San Diego Jacobs School of Engineering Faculty Elected to National Academy of Engineering

Three faculty members in the Department of Mechanical and Aerospace Engineering at the University of California, San Diego Jacobs School of Engineering have been elected to the National Academy of Engineering. Peter C. Farrell, founder, chairman and CEO of ResMed, and a member of the Council of Advisors of the Dean of the Jacobs School, also was elected to the academy.

“Election to the National Academy of Engineering is one of the highest…

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Added by MySDScience on February 9, 2012 at 12:00pm — No Comments

Ultraviolet Protection Molecule in Plants Yields Its Secrets to Scripps Research Team

LA JOLLA, CA – February 9, 2012 ­– Lying around in the sun all day is hazardous not just for humans but also for plants, which have no means of escape. Ultraviolet (UV) radiation from the sun can damage proteins and DNA inside cells, leading to poor growth and even death (as well as carcinogenesis in humans). But plants have evolved some powerful adaptive defenses, including a complex array of protective responses orchestrated by a UV-sensing protein molecule known as…

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Added by MySDScience on February 9, 2012 at 12:00pm — No Comments

Engineers Find Inspiration for New Materials in Piranha-proof Armor



piranha

The razor-like teeth of the piranha trap the skin and muscle of its prey in a guillotine-like bite.

It’s a matchup worthy of a late-night cable movie: put a school of starving piranha and a 300-pound fish together, and who comes out the winner?

The surprising answer—given the notorious guillotine-like bite of the piranha—is Brazil’s massive Arapaima fish. The secret toArapaima’s success lie in its…

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Added by MySDScience on February 8, 2012 at 12:00pm — No Comments

Google Earth Ocean Terrain Receives Major Update

Internet information giant Google updated ocean data in its Google Earth application this week, reflecting new bathymetry data assembled by Scripps Institution of Oceanography, UC San Diego, NOAA researchers and many other ocean mapping groups from around the world.

The newest version of Google Earth includes more accurate imagery in several key areas of ocean using data collected by research cruises over the past three years.

"The original version of Google Ocean was a newly…

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Added by MySDScience on February 7, 2012 at 12:00pm — No Comments

UC San Diego Professor Kim Barrett Selected President-Elect of the American Physiological Society

Kim E. Barrett, PhD, professor of medicine and dean of graduate studies at the University of California, San Diego, will become president-elect of the American Physiological Society (APS).  APS is the nation’s premier nonprofit organization devoted to fostering education, scientific research, and dissemination of information in the physiological science – the study of how molecules, cells, tissues and organs function to create health or…

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Added by MySDScience on February 7, 2012 at 12:00pm — No Comments

Salk scientists use an old theory to discover new targets in the fight against breast cancer

LA JOLLA, CA—Reviving a theory first proposed in the late 1800s that the development of organs in the normal embryo and the development of cancers are related, scientists at the Salk Institute for Biological Studies have studied organ development in mice to unravel how breast cancers, and perhaps other cancers, develop in people. Their findings provide new ways to predict and personalize the diagnosis and treatment of cancer.

In a paper published February 3…

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Added by MySDScience on February 7, 2012 at 12:00pm — No Comments

Scripps Research and Technion Scientists Develop Biological Computer to Encrypt and Decipher Images

LA JOLLA, CA – February 7, 2012 – Scientists at The Scripps Research Institute in California and the Technion–Israel Institute of Technology have developed a “biological computer” made entirely from biomolecules that is capable of deciphering images encrypted on DNA chips. Although DNA has been used for encryption in the past, this is the first experimental demonstration of a molecular cryptosystem of images based on DNA computing.

The study was published in a recent…

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Added by MySDScience on February 7, 2012 at 12:00am — No Comments

Discovery of extremely long-lived proteins may provide insight into cell aging and neurodegenerative diseases

LA JOLLA, CA—One of the big mysteries in biology is why cells age. Now scientists at the Salk Institute for Biological Studies report that they have discovered a weakness in a component of brain cells that may explain how the aging process occurs in the brain.

The scientists discovered that certain proteins, called extremely long-lived proteins (ELLPs), which are found on the surface of the nucleus of neurons, have a remarkably long lifespan.

While the…

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Added by MySDScience on February 3, 2012 at 12:00pm — No Comments

UC San Diego Moores Cancer Center Offers New Hope for Deadly Brain Tumor

Santosh Kesari, MD, PhD, director of Neuro-Oncology at UC San Diego Moores Cancer Center.

Jim Black is fighting the meanest, most aggressive, most common kind of brain tumor in the United States: recurrent glioblastoma multiforme (GBM).  In the United States, each year, approximately 10,000 patients are affected by GBM.  Now, a novel investigational device – available only at clinical trial sites – is offering new hope to…

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Added by MySDScience on February 3, 2012 at 12:00pm — No Comments

Team Led by Scripps Research Scientists Demonstrates Effective New ‘Biopsy in a Blood Test’ to Detect Cancer

LA JOLLA, CA – February 3, 2012 – Scientists from The Scripps Research Institute, Scripps Health, and collaborating cancer physicians have successfully demonstrated the effectiveness of an advanced blood test for detecting and analyzing circulating tumor cells (CTCs)—breakaway cells from patients’ solid tumors—from cancer patients. The findings, reported in five new papers, show that the highly sensitive blood analysis provides information that may soon be comparable to that from some types…

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Added by MySDScience on February 3, 2012 at 12:00am — No Comments

Heat and Cold Damage Corals in Their Own Ways, Scripps Study Shows



Reef

Branching Acropora corals dominate shallow-water coral reefs such as those pictured here from the Central Pacific. Because reef-building corals are sensitive to changes in temperature, climate change threatens the stability of coral reefs. Credit: Melissa Roth

Around the world coral reefs are facing threats brought by climate change and dramatic shifts in sea temperatures. While ocean warming has been the primary focus for…

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Added by MySDScience on February 2, 2012 at 12:00pm — No Comments

Scripps Research Alumnus Wins International Science & Engineering Visualization Challenge

LA JOLLA, CA – February 2, 2012 – A powerful 3D animation tool created by Graham Johnson at The Scripps Research Institute has been selected as the winning video in the ninth annual International Science & Engineering Visualization Challenge.

The competition, co-sponsored by the National Science Foundation (NSF) and the journal Science, is designed to celebrate and encourage the visual communication of science for education and journalistic purposes. This year, 212 entries…

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Added by MySDScience on February 2, 2012 at 12:00pm — No Comments

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