Tag: "after" at biology news

Faster-acting antidepressants closer to becoming a reality

...e behaviors in mice; for example, the mice gave up after being forced to engage in hopeless tasks, such as prolonged swimming. A dose of ketamine reversed the depression-like behaviors for at least two weeks. When the researchers gave the mice a substance that blocks the AMPA receptor beforehand, ketami...

Steroids, not songs, spur growth of brain regions in sparrows

...f the birds then were surgically deafened. A week after the surgery, all of the birds were given testoster...n sequence. The brains of the birds were examined after 7 and 30 days, and the volume of the song production areas did not differ between the deafened and t...

Fruit fly gene from 'out of nowhere' is discovered

...nctional genes as well. The hydra gene is named after the Greek mythological beast that had a hound's body and nine snakeheads, because it has nine duplicated first exons (sections of the gene that contain protein-coding information). Each of these exons may serve as alternative starting positions for t...

New joint replacement material developed at MGH put to first clinical use

...t hip implants could start loosening about 5 years after surgery and would eventually fail completely. A team led by William Harris, MD, DSc, now director emeritus of the MGH OBBL, investigated this complication and found that long-term friction of the implants head against the polyethylene-lined joint soc...

Brain's 'hearing center' may reorganize after implant of cochlear device

...restore normal auditory pathways in the brain even after many years of deafness. The results imply that the brain can reorganize sound processing centers or press into service latent ones based on sound stimulation. Jeanne Guiraud, PhD, and colleagues at the University of Lyon, Edouard Herriot University...

Did pterosaurs feed by skimming?

...was highly unlikely to have occurred in pterosaurs after all. Humphries, and colleagues from the Universities of Portsmouth, Reading, and Sheffield in the UK, investigated the feeding mechanisms of the pterosaurs using a variety of neat experimental and aerodynamic modelling techniques. They compared th...

Effects of aging in stem cells

... new marrow cells at roughly the same pace 4 weeks after transplantation. But at 8 and 16 weeks after transplantation, the old HSCs contributions had dropped considerably, suggesting that aging HSCs los...

Identified main genetic variants involved in response to HIV

... virus load in patients during the first two years after the infection, and also to the rhythm of immune degradation as a result of the infection. This type of comparison, known as association study, permitted to deduct main genetic variations playing a central role in the control of viral infection. Res...

Pediatric ritalin use may affect developing brain, new study suggests

...ld" tests, rats examined in adulthood three months after discontinuing the drug displayed fewer signs of an...t don't know yet." One thing was clear: 3 months after the rats stopped receiving Ritalin, the animals' neurochemistry largely had resolved back to the pre...

Rise of dinosaurs in Late Triassic more gradual than once thought

...wever, is a relatively new excavation site started after a hiker discovered fossils there in 2002. After Ghost Ranch paleontologist Alex Downs showed some of these fossils to Irmis and Nesbitt in 2005, the two graduate students arranged to excavate at the site in the summer of 2006 and again earlier this s...

Genomic analysis uncovers new targets for HIV vaccine

...tter at controlling the proliferation of the virus after infection. These gene variants are known as polymo...d had multiple blood tests documenting viral loads after infection and before they started receiving antiretroviral treatment. The three polymorphisms were...

New clue into how diet and exercise enhance longevity

...t of younger mice. The researchers also found that after eating, their brains showed higher levels of superoxide dismutase, an antioxidant enzyme that protects cells from damage by highly reactive chemicals called free radicals. Our findings put a mechanism behind what your mother told when you were growi...

First genome-wide study of infectious disease opens new avenues for HIV treatment, vaccines

...viral levels to a low set point in the period soon after infection. If scientists could pinpoint the gene variants that help some people control HIV infection--or avoid it altogether--they might be able to rationally design therapies or vaccines to mimic these naturally occurring genetic advantages, he not...

Mucins stand guard against gut infections

...(a common cause of diarrhea) and found that 1 week after infection this organism could be detected in the organs of the vast majority of mice lacking Muc1, but never in mice with intact Muc1. Although this organism was able to enter the gastrointestinal epithelial cells lining the gut of both Muc1-deficien...

New role for protein in fat cells may improve understanding of obesity and diabetes

...emoved from the droplets and then used by the cell after the fats are broken down by enzymes called hydrolases. But since hydrolases are in the droplets and not in the ER, cells low in CETP cannot break down the fats they store as effectively, Morton and Izem say. The scientists conclude that CETP is pr...

JCI table of contents: July 19, 2007

...(a common cause of diarrhea) and found that 1 week after infection this organism could be detected in the organs of the vast majority of mice lacking Muc1, but never in mice with intact Muc1. Although this organism was able to enter the gastrointestinal epithelial cells lining the gut of both Muc1-deficien...

Coming soon -- Protein synthesis without amino acids?

... of pearl. This long-envisioned process is modeled after the plastic production process known as Ziegler-Natta polymerization, which requires special metal catalysts. The heart of this process is a step called insertion, in which the next pearl, or monomer, squeezes itself in between the metal atom and the...

Expert to provide update after 'worst tomato virus' hits California

...he status of Tomato yellow leaf curl virus (TYLCV) after it was found for the first time in California. The update is part of a news conference on plant diseases that are of importance to California's economy and agriculture, to be held Monday, July 30 at 11 a.m. PST at the Town and Country Resort and Conv...

Save our reef, save our heritage

...t we can do in the way we manage the reef and look after it that will mitigate those threats. We have to ...ed, researched and documented while we have them - after they are gone it will be too late. The global impacts of natural disasters, climate change, global...

Exercise, exercise, rest, repeat -- how a break can help your workout

...nts of fat mobilization and utilization during and after the exercise. These findings will be informative a...) two bouts of 30-min exercise with a 20-min rest after the first 30-min bout, along with a 60-min recovery period at the end (Repeated) one 60-min rest pe...

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(Date:10/15/2014)... of Life, is a non-traditional biophysics textbook and it ... is a journey of discovery into biological systems and ... biological regulation. It is about how our genes make ... the billions of cells in an organism. It quantifies ... principles, which can be found on both large and ...
(Date:10/15/2014)... NXT-ID, Inc. (NASDAQ: NXTD and NXTDW) ... growing mobile commerce market releases photos and video of the recent ... October 13 th . Gino Pereira , ... angel investor Mr. Chad A. Verdi rang the bell.  ... his investors and employees "for their work and dedication in bringing ...
(Date:10/14/2014)... published in Cancer Research shows SIRT6—a protein ... cancers—can promote the development of skin cancers by turning ... of sun-damaged skin cells. , Previously considered protective, SIRT6 ... sirtuins that help regulate genomic stability and prevent some ... repair DNA damage, which can lead to cancer. This ...
Breaking Biology News(10 mins):New book about life as seen from physics 2Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 2Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 3Two-faced gene: SIRT6 prevents some cancers but promotes sun-induced skin cancer 2
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