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Tag: "relationship" at biology news

Nicotine triggers the same brain reward circuitry as opiates

...ceived nicotine. The researchers also studied the relationship among nicotine, the environment, and this reward pathway. They conditioned mice to associate a specific test chamber with receiving nicotine, finding that the mice would prefer to stay in that chamber when given a choice. The researchers found that j...

Bitter or sweet? The same taste bud can tell the difference

...in when it was stimulated by a bitter taste." The relationship between NPY and CCK may provide the answer. A few years ago, Herness' laboratory was the first to find CCK in taste bud cells. These results suggested that CCK may tell other cells ?those attached to nerve fibers that transmit messages to the brain ?...

Survival of heart patients on beta-blockers varies greatly with genetic variation

... unique collaborative venture that builds a strong relationship between researchers in Kansas City and St. Louis." The TRIUMPH registry recruits patients through the Cardiovascular Outcomes Research Consortium (CORC) headed by Spertus who will partner with McLeod and basic scientists led by Daniel P. Kelly, M.D....

What comes first…the chicken, the egg, or the bad attitude?

...high-performance broiler breeder hens explores the relationship between the hen's growth and reproductive performance, to improve our understanding of how producers can better manage the birds' body weight during puberty, and also during the egg-laying period that comes later. No other broiler breeders research ...

A novel method to measure circadian cycles

...nd colleagues to explore questions about the exact relationship between the suprachiasmatic nucleus and the circadian rhythms of cultured fibroblast cells. Just how does this brain structure coordinate genetic imperatives with environmental input including light fluctuations? And frequent fliers, bleary-eyed in f...

Rensselaer researchers develop approach that predicts protein separation behavior

...ll yield fundamental information about the complex relationship between a protein's structural features and its ch...of molecular-level quantitative structure-property relationship models with macroscopic steric mass action isotherm models and support vector machine regression com...

Team of international scientists departs today to discover the unknown in China's Himalayan region

...verest: Mission Himalayas" builds upon a long-time relationship between CI and Disney to support biodiversity conservation. Since 1995, Disney Wildlife Conservation Fund (DWCF) and the Walt Disney Company Foundation have contributed to several CI initiatives including a Global Amphibian Assessment, the protection...

Marine bacterium suspected to play role in global carbon and nitrogen cycles

...ssue of the journal Nature. As the true range and relationship of Archaea to other microbes is revealed, information about N. maritimus will serve as benchmarks for all microbiologists. Biochemical and genomic studies are already underway to learn the mechanisms by which N. maritimus uses nitrogen and how its p...

Insight into our sight: A new view on the evolution of the eye lens

...eye protein has revealed a previously unrecognized relationship between certain components of vertebrate eyes and those of the more primitive light-sensing systems of invertebrates. The findings help clarify our conceptual framework for understanding how the vertebrate eye, as we know it, has emerged over evoluti...

Naturally occurring asbestos linked to lung cancer

...closest to an asbestos source - only to test for a relationship between proximity and risk. "This is very creative, painstaking epidemiology," said Jerrold L. Abraham, professor and director of environmental and occupational pathology at SUNY Upstate Medical University in Syracuse, New York, and a leading author...

Deep sea buffet for bone-devouring worms

...ed article in Environmental MicrobiologyAn unusual relationship between bacteria and a newly discovered group of marine worms is the only known partnership (or symbiosis) which uses sunken marine mammals as its sole source of nutrition. In the September issue of Environmental Microbiology, Dr Shana Goffredi and ...

Simple explanation for complex pattern of feather development

...n localized patches and demonstrated that a simple relationship between developmental genes could be the basis for formation of feather structures. This was the first documentation, in any plant or animal, that signaling molecules in development can actually behave as envisioned by Turing 50 years ago. This work...

Ancient DNA confirms single origin of Malagasy primates

...er said the researchers' results support the close relationship of sloth lemurs (Palaeopropithecus) to living indr...iids, but Megaladapis does not show a sister-group relationship with the living genus Lepilemur. "The classification of the latter in the family Megaladapidae is mi...

Scientists create digital bacteria to forge advances in biomedical research

... computer simulation that allows them to study the relationship between biochemical fluctuations within a single cell and the cell's behavior as it interacts with other cells and its environment. The simulation, called AgentCell, has possible applications in cancer research, drug development and combating bioter...

Forsyth scientists find three bacteria associated with oral cancer

...ward oral cancer. The team also seeks to study the relationship of oral bacteria to a variety of cancers and diseases. According to Goodson, "This research is important for the questions it raises. Do oral bacteria contribute to oral cancer? Can oral bacteria be used as indicators of disease? As we address these...

Environment, not genes, key in family relationships

...sociability, and social responsibility. The family relationship variables were positivity (parent/child warmth and support), negativity (parent-child coercion and conflict) and parental monitoring and control. All variables were measured from multiple perspectives: the adolescent's, the mother's, the father's, a...

Exercise aside, genes may ultimately dictate seniors' mobility

...ssed seniors in an effort to better understand the relationship between genetic makeup, intensity of physical activity and functional decline. Twice a year throughout the four-year study, participants ages 70 to 79 reported their level of activity and their ability to walk a quarter mile or up 10 stairs. Researc...

Women feel more pain than men, research shows

...arch by the Pain Management Unit has looked at the relationship between gender differences in anxiety sensitivity and pain. Anxiety sensitivity is the tendency to be fearful of anxiety-related sensations (e.g., rapidly beating heat), and seems to be important in the experience of pain sensations. In a study of 15...

How fish hear and make sounds at same time

...or linear movement. Because the study indicates a relationship between the ear and the auditory and vocalization systems of the brain, it could help scientists understand some of the mechanisms that contribute to deafness. "We've studied so many things about these fish, and I never cease to be amazed by how sim...

An essential regulator of body weight revealed

...triggered feeding had failed to do show any direct relationship between eating behavior and the molecules scientists thought NPY/AgRP neurons might use to regulate it. "So I think it's fair to say the POMC neurons gained in stature during the last 10 years as being really important to feeding; meanwhile, the im...

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