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Tag: "fewer" at biology news

A large step forward in the fight against African sleeping sickness

...mately end in coma, followed by death. At present, fewer than 10% of the patients are treated in time. But on the other hand, the current treatment is also very toxic, and in many cases also results in the patient's death. African sleeping sickness is a disorder caused by the trypanosome parasite. The bl...

Loosen leash on cancer protein 'watchdog,' researchers say

...modified for the study had only developed three or fewer within that time frame. Moreover, there was no sign that the mice had aged any faster than normal. "We checked for the sort of characteristics that the elderly of many mammal species typically show - thinner skin, lower bone density, spinal hunching...

Congenital rubella syndrome nearly eradicated in the US

...ed States," according to the statement. There were fewer than 10 cases or rubella reported in the U.S. last year and in the past 5 years there have only been 4 cases of congenital rubella syndrome reported, only one of which was in a child whose mother had been born in the U.S. The remarkable success of t...

Psychotropic drug prescriptions for teens surge 250 percent over 7 year period

...hotropic drugs, the advent of new medications with fewer side effects, increased screening for mental health disorders, and patient demand for such drugs. Nevertheless, the study noted that overall, pharmaceutical companies increased their spending on television advertising six fold, to $1.5 billion, betwe...

HIV decline in Zimbabwe linked to behavioural change

...eople delaying when they first have sex and having fewer casual partners. They found HIV prevalence fell most steeply at young ages, with a drop in prevalence of 49 percent for women aged between 15 and 24, and a 23 percent drop in men aged 17 to 29. In 2003 Zimbabwe was estimated to have 1.8 million pe...

Salmonella bacteria use RNA to assess and adjust magnesium levels

...-magnesium environment, phoQ deactivates phoP, and fewer copies of the instructions for making MgtA are made. When Groisman and his colleagues created a mutant strain lacking the phoQ gene, though, they were surprised to find that production of the instructions to make the MgtA protein could still someho...

Study finds 60 new genes controlled by DNA snippet

...eral emerging explanations for how we do more with fewer genes." ...

Suicide risk does not increase when adults start using antidepressants, study finds

...sant medications. That misperception could lead to fewer people with depression being treated with medications proven to be effective in battling depression, he adds. "There may be subgroups of people who become more agitated or suicidal after taking these drugs, and those people should seek help from a d...

Nanopore method could revolutionize genome sequencing

...cing method we propose has the potential of having fewer errors than the present method, which is based on the Sanger method," said Johan Lagerqvist, a graduate student in physics at UCSD and the lead author on the paper. "It should be possible to sequence strands of DNA that are tens of thousands of base...

p53, tumor suppression and aging

...expressing 30-80% the normal level of Mdm2 develop fewer tumors than wild type mice, yet age normally." ...

Mystery solved: Gold's power against autoimmune diseases defined

...r autoimmune diseases that are more effective with fewer side effects. ...

Ocean acidification threatens cold-water coral ecosystems

...l be in waters supersaturated with aragonite. With fewer carbonate ions available, there could be a dramatic reduction in the growth of both the corals and marine plankton species that make their shells from aragonite. As the oceans become more acidic, corals are expected to build weaker skeletons, a proce...

UC Davis study finds HIV hiding from drugs in gut, preventing immune recovery

.... They discovered that newly infected patients had fewer signs of inflammation at the beginning of the study and experienced greater recovery of the gut mucosal immune system function by the end of it. Dandekar and her colleagues are currently following additional patients being treated with HAART. Unpu...

New pathways for autoimmune treatment identified

...l for humans with APS1. They found significantly fewer i NKT cells in the thymus, spleen, liver and bone marrow and severely impaired maturation of those cells in mice missing the Aire gene. And the mice given alpha-GalCer had significantly reduced autoantibody production. In 2001, Dr. Terry L. Delovit...

A more powerful and efficient engine for rice: the C3-C4 challenge

...production continues to increase steadily--despite fewer resources such as land, labor, and capital--millions of people could fall backward into poverty. More than 3 billion people depend on rice as their main food source each day, including most of the world's poor. "Frankly, we have almost exhausted ...

Tamoxifen for breast cancer prevention does not benefit most women

...year breast cancer risk of 1.67 percent or higher, fewer than one in five were inclined to take tamoxifen to prevent the disease. Concern about potential side effects was the primary reason. ...

MIT sheds light on how tumor cells form

...46, or 23 pairs. Aggressive tumor cells often have fewer or more than 23 pairs of chromosomes, a condition called aneuploidy. To date it has not been clear how tumor cells become aneuploid. "Checkpoint proteins" within cells work to prevent cells from dividing with an abnormal number of chromosomes, bu...

Seeing the serpent

...Some primate groups less threatened by snakes show fewer signs of evolutionary pressure to evolve better vision. For example, the lemurs of Madagascar do not have any venomous snakes in their environment, and in evolutionary terms "have stayed where they are," Isbell said. In South America, monkeys arrived...

Bird flu study highlights need to vaccinate flocks effectively

...etect the spread of avian flu quite simply because fewer birds die. The result is increasing amounts of bird flu virus contaminating the birds' surroundings without farmers realising it. In practice, it is very hard to protect more than about 90 per cent of the birds in any given flock, and protection ...

The vicious cycle of rainforest destruction

... the rainforest gets invaded by savanna, which has fewer trees and holds less carbon in the soil. Savanna also doesn't recycle water in the same way as rainforest, so the carbon loss from the savanna is greater and the atmosphere becomes drier." The researchers want to find out under what conditions rainf...

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