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Tag: "within" at biology news

Gene study shows three distinct groups of chimpanzees

...w about their evolution and the level of variation within chimpanzees," said Przeworski. "These are our nearest relatives, closer to humans than they are to gorillas, yet we know so little about them, and even less about gorillas and orangutans." The chimpanzee genome differs from the bonobo genome by ...

Uganda's mountain gorillas increase in number

...nservation efforts by the guards and staff members within that landscape. The current total of mountain gorillas at both locations brings the worldwide tally to approximately 720 individual animals....

Scientists uncover new target in cancer mutation puzzle

...elop, several mutations must arise and collaborate within a single cell. Ras and p53 mutations are particularly dangerous, implicated in colon, pancreas, lung and other cancers. Ras is part of a family that transmits signals controlling the way cells behave. Hyperactive Ras can lead to the uncontrolled grow...

Long-lived deep-sea fishes imperiled by technology, overfishing

...re there are no guidelines and protections ?unlike within United States territorial waters. Most of these fish are caught by deep trawlers near seamounts, where they congregate because of food. Technological advances have made targeting these fish easier, the panelists pointed out, because powerful ships...

Mosquito genes explain response to climate change

...p for the mosquito Wyeomyia smithii, which develop within the carnivorous leaves of pitcher plants, appears online ahead of publication in the May issue of the journal Genetics. The UO researchers identified regions on three chromosomes that respond to length of day, which scientists call photoperiodism. T...

Update on census of world's most endangered cat -- Female Amur leopard found dead

...on April 20 about two miles from Bamburovo village within the watershed of Alimovka River on the territory o...enseless killing. This is the third leopard killed within this area over the last five years and underscores the desperate need for a unified protected area w...

How to manage forests in hurricane impact zones

...atrix—then assesses the risks of severe hurricanes within this context. Activities following a hurricane eve...practices for proceeding with salvage. "Stands within a hurricane damage zone that are not salvaged will require monitoring for up to 5 years to detect de...

NIH announces phase III clinical trial of creatine for Parkinson's disease

...will enroll people who have been diagnosed with PD within the past five years and who have been treated for two years or less with levodopa or other drugs that increase the levels of dopamine in the brain. Many of the symptoms of PD result from the loss of dopamine, a neurotransmitter that helps to control...

Tiny clue reveals new path toward heart disease

...in the migration of cells from one spot to another within smooth muscle. According to the researchers, the newly identified SNP may change the level of this protein in blood vessels, causing cells to congregate in one spot and form a plaque in the vessels to the heart. In addition to identifying the gene...

Recently discovered species gain protection

...hose last remaining habitat is diminishing rapidly within the Central Cordillera. Seven Vulnerable and four Endangered frog species occur within the new reserve, as do five additional species so new to science that they are still awaiting formal...

Stretching DNA to the limit

...uces the crosslinking of the constituent DNA bases within the polynucleotide chains, as well as causes the formation of lesions by linking together the adjacent strands. The small changes in structure induced by this crosslinking can very profoundly affect the ability of DNA to recognize specific molecules,...

Bumblebee house warming -- it takes a village

...happened a colony's remaining incubators responded within 24 hours by increasing their rate of incubation, rather than having workers involved in other jobs switch tasks, said O'Donnell. Bumblebee workers vary considerably in size, and body size affects which tasks individuals perform. "We expected th...

Key found to kill cystic fibrosis superbug

...-L-arabinose (Ara4N), may lead to a susceptibility within the cell membrane to antibiotics. "We are very excited with these findings, as they will let us come up with novel molecules to disrupt the making of Ara4N," says Valvano. "These molecules could then be tested as novel antibiotics." Valvano is a ...

Pregnancy hormone key to repairing nerve cell damage

...esearchers are hopeful human trials can take place within the next several years. "This discovery has the potential to take MS therapy a step further than current treatments that stabilize the disease in its early stages. By promoting repair, which is the goal of prolactin therapy, we have hope of actual...

Cells use 'noise' to make cell-fate decisions

...sance that wreaks havoc on electronic devices. But within cells, a similar kind of biochemical "noise" is be...ng through the components of a circuit. Similarly, within each living cell there are myriad "genetic circuits," each composed of a distinct set of biochemical...

New evidence of 'human' culture among primates

... that it suggests an element of human-like culture within this family of Capuchins. Biological anthropologists are divided over whether other species indeed have the capacity to acquire skills by social learning, or whether the different skill sets exhibited by different groups of the same species are a ...

Salamanders suffer delayed effects of common herbicide

...emical exposure, or interactions among individuals within and between species that can affect our estimates of safe chemical concentrations." Atrazine is one of the most widely used pesticides in the United States, and possibly the world. It is relatively long-lived and is even found at the poles. Accor...

Moonlighting enzyme linked to neurodegenerative disease

...tely explain the clinical variability because even within the same family we may see individuals with different phenotypes -- one more severe than the other," Dr. Isaya says. In Friedreich's ataxia, clinicians have long hypothesized the existence of gene modifiers -- genes that can influence the outcome ...

Scientists unravel clue in cortisol production

... an extremely complex series of events that starts within minutes of the adrenal gland receiving the signal. Without all these transient binding events, the adrenal gland fails to produce optimal levels of cortisol." Next the team will investigate how small molecules ?ligands ?regulate cortisol productio...

Scripps Research study reveals new activation mechanism for pain sensing channel

...arch, show that modification of reactive cysteines within TRPA1 can cause channel activation," Macpherson said. "Our research efforts are now aimed at further understanding how binding of these compounds activate the channel, and identifying the physiological role of TRPA1 in sensing oxidative stress." The ...

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