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Tag: "affected" at biology news

Role of noise in neurons

... They show how conduction along such thin axons is affected by the probabilistic nature of voltage-gated ion channels (channel noise). Channel noise destroys information in the AP, and they conclude that these effects are much larger than previously supposed and therefore must be taken into account in any fut...

Corals -- More complex than you?

...urge in diseases, and the extent to which they are affected by other stresses caused by human activity are important questions. The similarity of the coral and human innate immune repertoires implies that they may function in similar ways, so the hope is that we can apply what we know about human health to be...

New bacteria test could improve quality of fruit and vegetable juice

...he bacteria, they can go back quickly and find the affected products." ...

Toxoplasmosis infection trick revealed by scientists

...asmosis each year. In the majority of cases, those affected don’t have any symptoms. But for those with weakened immune systems, and unborn babies, toxoplasmosis can cause very serious health problems....

Study offers clues to 'Broken Heart Syndrome'

... these patients, we can start to understand who is affected by Takotsubo cardiomyopathy, offer more focused long-term care, and make predictions about their outcomes." ...

HIV survival improves if patients stay in care

...e problem, and we certainly didn't know whether it affected survival." While HIV is now a chronic or lifelong disease, it is one that typically strikes at a relatively young age. That makes the population different from those who have high blood pressure or adult-onset diabetes. "These patients often ...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...sound quality and responsiveness are significantly affected by the thicknesses of an instrument wall and the exact materials of which the wall is made. Many acousticians had assumed that the main important factor was the profile of a wind instrument's bore, the chamber where air vibrates and produces pitch. ...

Study shows dramatic increase in Caesarean sections

...ultifactorial and reflect a complex social process affected by clinical status, obstetric practice and training, family and social pressures, the legal system, availability of technology, women's requests and women's role models, such as celebrity elective caesarean delivery," Dr Pennell said. "The degree ...

Cornell lab confirms deadly fish virus spreading to new species

...ial," said Bowser. "There are just so many species affected and so many mortalities." Three new fish kills have occurred in 2007 in New York waters since the virus was identified in the Great Lakes Basin in 2005. In the St. Lawrence River, hundreds of thousands of round gobies have succumbed to the disease;...

Revealing the machinery underlying the 'plastic' juvenile brain

...ine whether such histone modification functionally affected plasticity, the researchers administered a drug to adult mice that would increase chemical modification of histone. They found that such adult mice, indeed, showed an increase in a form of visual plasticity. "Our results show that visual experienc...

Detecting poisons in nectar is an odour-ous task for honeybees

...at both the sugar content and the toxins in nectar affected a honeybee’s memory for learned odours. Honeybees learned not to respond to odours associated with toxins within 20 min of eating toxins, and would retain this ability up to 24 hours after eating a toxin. This suggests that honeybees can react to t...

City ants take the heat

... University, has shown that city animals have been affected by urban heat islands. These researchers discovere...ists will soon determine whether urban warming has affected species in other major cities. "We will quantify heat islands on the small scales that pertain t...

Ancient genes used to produce salt-tolerant wheat

... Over six per cent of the world's arable land is affected by salinity. Salt tolerant crops can provide farmers with income for remediation, as well as helping to stabilise soil from wind and water erosion....

Scientists genetically engineer tomatoes with enhanced folate content

...luding a better look at how the overall product is affected by this alteration." And there is another hurdle the researchers must clear. Boosting the production of folate in tomatoes involved increasing the level of another chemical in the plant, pteridine. Little is known about this chemical, which is fou...

A 'traffic light' for neurons means 'go' for improving brain research

... The gene ChR2 is derived from an algae that makes affected neurons more active when exposed to blue light. Deisseroth and collaborators first showed this in a paper in Nature Neuroscience in 2005. In this week's paper, they demonstrate that another gene, NpHR, which is borrowed from a microbe called an archa...

Mechanism of nicotine's learning effects explored

...centers. In turn, the effects on GABAergic neurons affected signaling between neurons mediated by the key substance calcium. The researchers also discovered key details of the mechanisms by which nicotine excites different kinds of “interneurons?in the prefrontal cortex. Interneurons are the way-stations f...

Male-killing bacteria makes female butterflies more promiscuous

...ideal location because every island is differently affected by the male-killling bacteria so that each has a d... per copulation to find how female promiscuity was affected by the sex ratio. They found that the size of the Spermatophore was key to female promiscuity. Howev...

Better assessment of transfusions could save blood

...ents admitted to hospital intensive care units are affected by anemia. Consequently, these patients receive a large number of red blood cell (RBC) transfusions in order to restore proper hemoglobin levels. New research shows that alternative treatments may lead to fewer transfusions, conserving critical blood...

Tracking sperm whales and jumbo squid

... be oxygen. It’s possible they could be negatively affected by long exposure to the higher oxygen levels found near the surface." A stressed-out squid may be an easy target for hungry sperm whales waiting below, according to Gilly. "We propose that jumbo squid are more susceptible to predation while they a...

Fighting influenza & co. with 40,000 blood samples

..., for example. Due to the age group that is mainly affected and a possible path of infection, this disease is also known as 'Students' Kissing Fever'. After the symptoms have disappeared, the pathogen, the Epstein-Barr virus, remains in the body for life and could permanently weaken the body's immune system w...

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