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Tag: "surprised" at biology news

Patients now surviving once-fatal immune disease

...ease by age 15. We and other physicians were quite surprised at how well these patients are doing with the proper care." XLA is a rare disease that is inherited through a mutation in the Btk gene on the X-chromosome--one of the two types of sex chromosomes. Males with this disease have very low levels of inf...

Amazon rainforest greens up in the dry season

...dry season, according to new research. The finding surprised the researchers. "Most of the vegetation around the world follows a general pattern in which plants get green and lush during the rainy season and then during the dry season, leaves fall because there's not enough water in the soil to support plant ...

International HIV/AIDS trial finds continuous antiretroviral therapy superior to episodic therapy

...he principal investigators for the trial. "We were surprised to learn that in the short term, episodic antiretroviral therapy carries such an increased risk without evidence of sparing patients the known side effects associated with ART." The University of Minnesota's James Neaton, Ph.D., another principal i...

Medical experts: US unlikely to have enough vaccines to stop avian flu

...n the United States and 20 million worldwide. "It surprised me that they thought it was going to be this bad," said Wändi Bruine De Bruin, lead author of the study and research faculty member in the Department of Social and Decision Sciences at Carnegie Mellon. The survey also included 17 non-medical experts...

Warbling whales speak a language all their own

...song is nothing like human language, I wouldn't be surprised if some marine mammals have the ability to communicate in a complex way," said Suzuki. "Given that the underwater environment is very different from our world, it is not surprising that they would communicate in rather a different way from land mamma...

Commonly used antidepressants may also affect human immune system

...T-cells. "In addition to the physical contact, it surprised us to find that these immune cells also have machinery to take up serotonin and to secrete it in an excitatory manner," Ahern said. "The point behind this transmission is not entirely clear, but it appears to be an additional way of stimulating a T c...

Too much sugar not good for coral reefs

...l components of runoff on live corals. I was very surprised to find that, rather than the usual suspects measured to determine water quality: nitrogen and phosphates, it was simple carbon compounds--too much sugar--that often kills corals indirectly by stimulating bacterial growth." "Sugars in runoff cause b...

Tiny polyps gorge themselves to survive coral bleaching

Certain species of coral have surprised researchers by showing an unexpectedly successful approach towards survival when seriously bleached. Their innovative strategy is gluttony. The discovery, derived from experiments on coral reefs in Hawaii , provides new insights into how these ti...

Mouse study reveals human X-SCID gene therapy poses substantial cancer risk

...rapy on the basis of their new findings. "We were surprised by the strength of the association between IL2RG gene therapy and development of lymphoma," says Woods. "These results suggest that curing X-SCID by replacing IL2RG in the manner it is currently being done puts patients at an increased risk of develo...

Infection 'alarm' yields clues to immune system behavior

... of the Journal of Biological Chemistry. "We were surprised by how sensitive cells were to small amounts and brief exposures to TNF," said Andre Levchenko, a Johns Hopkins assistant professor of biomedical engineering and senior author of the paper. "Our analysis may help drug companies solve problems with th...

New male contraceptive clears hurdle

...ormation Project in San Francisco, says she is not surprised that American men are watching the RISUG trial with keen interest. She emphasizes that the method has the potential to be the first truly affordable, reversible, long-term male contraceptive. In 2002, when enrollment in the Indian study was halted,...

Alleged 40,000-year-old human footprints in Mexico much, much older than thought

...ted numerous fossils of human ancestors. He is not surprised at the new finding. "The evidence (the British team) has provided in their arguments that these are footprints is not sufficient to convince me they are footprints," said White, who did not contribute to the new work that Renne's group is reporting ...

A salty tale: New bacterial genome sequenced from ancient salterns

...nown to eke out life in the ponds, scientists were surprised to discover ordinary bacteria also thriving in such a physically demanding environment, at salt concentrations up to 30 percent. How could these microbes--which normally prefer milder environments--thrive in such high salt? To find out, TIGR resear...

New evidence supports century-old theory of cancer spread

.... Were he alive today, Aichel would likely be both surprised and gratified, even though it might seem to be taking a rather long time." ...

Olfactory system detects pheromones that control reproduction

...te was never suspected. In addition, we were quite surprised when we realized we could not identify any connections with the vomeronasal system, which led us to attempt to confirm the experiment on a wide range of mice," she said. As a control, the researchers performed a separate set of experiments using a n...

Changes to embryos can elicit change in adult fish

... of genes, or genetically integrated. "We were surprised to see that the genetic basis of components involved in opening the jaw is independent of the jaw-closing system," said Streelman. Researchers compared two cichlid species that dwell in Africa's Lake Malawi. One species had force modified jaws that...

A little telomerase isn't enough

...animals a full complement of telomerase, they were surprised to find that those mice had the same symptoms and problems as their half-telomerase littermates. The researchers are now mating these short-telomere mice with mice with regular-length telomeres to see whether telomere length goes back up. They're al...

PLoS Medicine publishes first trial of effect of male circumcision on HIV infection

...rotective effect of male circumcision observed has surprised many HIV experts, and it will be important to see whether the related studies under way confirm the results of this trial. The trial, conducted by a team of French and South African researchers and sponsored by ANRS (the French National Agency of ...

Human cerebellum and cortex age in very different ways

...in the open-access journal PLoS Biology. "We were surprised both by the homogeneity of aging within the cortex and by the dramatic differences in aging between cortex and cerebellum," says Joshua B. Plotkin, a junior fellow in the Harvard Society of Fellows. "The fact that gene activity levels in the cerebell...

Study shows big game hunters, not climate change, killed off sloths

... for radiocarbon dating. Steadman said he was not surprised to find that humans were more significant than changes in climate because most species of plants and animals can adjust to changes in temperature. However, the transition between the glacial and inter-glacial period, which resulted in shifts in habit...

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