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Tag: "years" at biology news

Alaskan puzzles, monitoring provide insight about North Pacific salmon runs

...example, you would not take very large harvests in years of big returns because price goes down as does qua...rdon and Betty Moore Foundation grant is for three years and is part of its Wild Pacific Salmon Ecosystem Initiative. The initiative focuses on salmon conser...

Institute for Systems Biology Symposium Addresses Need for Better Computational Tools

...ear that would have taken us approximately 100,000 years to complete with the current computational power at ISB. We have already predicted 50,000 protein structures and are well on our way to reaching the goal of between 100,000 - 150,000 structures." The project, funded by IBM and tapping into the unuse...

No relief for Pacific Northwest drought

...or this year. Vegetation growth that occurs during years with heavier rains, however, can sometimes set the stage for major fires in following years if drought resumes. The models that simulate the droughts and the likelihood of fire are complex an...

Low level of extinction during ice age linked to adaptability

...ich occurred from about 330 million to 290 million years ago, late in the Paleozoic Era. The likely answer... only clue us in to what happened many millions of years ago, but they also have implications for understanding the modern marine ecosystem," said Matthew Po...

Increased risk of osteoporosis associated with gene that one in five people have

...hers studied 156 women with an average age of 63.5 years who were at least one year past menopause. They analyzed the genetic sequence of each woman's CYP1A1 gene to identify which of the genetic variants they possessed. One of the variations of the gene, known to be present in 19 percent of the general p...

Gene Therapy Cures Inherited Liver Disease In Rats

...ight after it is injected into the body. "Fifteen years ago, the goal was to get some correction of the problem," he said. "Most effects were transient. Now with these vectors, long-term correction with no long-term toxicity is possible. We need to find a way to avoid short term toxicity." ...

HIV-1 spread through six transmission lines in the UK

... 1982 were probably infected within a window of 10 years prior to that time, the currently circulating strains may not represent the first HIV-1 lineages within the UK . If earlier strains existed they may have been unsuccessful in sustaining transmission to the present, although the absence of older strai...

Multi-purpose protein regulates new protein synthesis and immune cell development

...ell. By doing so, they activate the UPR." Several years ago, Kaufman and his research colleagues discovered that IRE1 triggers the unfolded protein response by splicing a segment of messenger RNA called XBP1. This leads to production of a new protein, which turns on genes in the UPR signaling pathway and ...

Light therapy may combat fungal infections, new evidence suggests

...of these light-sensing genes more than 400 million years ago may have had major significance for fungal colonization of land, at a time when UV irradiation was particularly intense. ...

Gray wolves maintain the food chain in winter

...stone. Wilmers and Getz used data from the past 50 years to establish winter trends and model wolves' impact on the fate of resident scavengers faced with a changing climate. Their models show that wolf kills temper the potentially devastating effects of climate-related carrion shortages on scavengers. Unl...

Researchers rein in regulatory RNAs

... The number of SATs identified in the past several years has grown substantially, and they are now believed to comprise at least 8% of human genes. Many SAT pairs have been implicated in various stages of gene regulation, including transcription, mRNA processing, splicing, stability, transport, and transla...

Birds brains reveal source of songs

... variable and more true to the old standards. Some years ago, Bottjer had observed that disabling a young finch's AFP circuit stopped the learning in midstream. The bird still sings, but never learns the right song. To explain this effect, scientists theorized that the AFP circuit helps the juvenile compar...

Rare surgery performed to remove pancreas, prevent diabetes

...id. Stewart's chronic pancreatitis developed four years ago as the result of a congenitally malformed panc...re has been done previously; the first case was 16 years ago at the University of Minnesota, and the patient still survives. Only a few other cases were atte...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

... took barely an hour for each participant but many years for the researchers to process and interpret the data, also found a "fascinating continuity between human romantic love and the physiological expressions of attraction in other animals. Other scientists," she said, "have reported that expressions of ...

Researchers uncover sequence of major rice pathogen

...n says. "This paper shows the work of the last two years in bringing this genome to life." Bringing the genome to life means capturing the biological meaning of the genome, Dean says. To do this, he and his colleagues used two strategies: comparative genomics and functional genomics. "In comparative geno...

Harmful chemicals may reprogram gene response to estrogen

...as, benign tumors that are common in women over 30 years of age. These rats were then treated with DES during days 3, 4 and 5 of life, during a critical period of uterine development. Once the rats reached adulthood, almost 95 percent had developed the uterine tumors. Furthermore, the tumors were much lar...

First frozen egg baby born in Canada

...dbearing to do so safely," notes Dr. Tan. After 30 years of age, a woman's fertility declines and the rate of spontaneous abortion increases significantly. The risks of chromosomal abnormalities, such as Down's syndrome, are also higher in babies produced by older women. Finally, current egg donor programs...

Infants With Rare Genetic Disease Saved by Cord Blood Stem Cells

...anted for a lysosomal storage disease is now seven years old and has developed and progressed normally, acc... who received cord blood survived for two to seven years -- the longest period of time they have been followed. Survival among Hurler's children who receive ...

Canadian youth 4th highest in international obesity study

...more than 160,000 young people aged 11, 13, and 15 years in Europe and North America. The Canadian component of the WHO initiative was coordinated by Dr. William Boyce of Queen's Social Program Evaluation Group (SPEG). Also on the research team from Queen's are Drs. Peter Katzmarzyk (Physical & Health...

Sickle cell and protection against malaria

... in sub-Saharan Africa. It has been known for many years that in those areas most afflicted by malaria the gene for sickle cell hemoglobin (HbS) occurs very frequently. The protection against malaria occurs in people who are heterozygote (HbAS), i.e., have one normal and one sickle gene, and previous work ...

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