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Smell in Biological News

Stop and smell the flowers -- the scent really can soothe stress

Feeling stressed? Then try savoring the scent of lemon, mango, lavender, or other fragrant plants. Scientists in Japan are reporting the first scientific evidence that inhaling certain fragrances alter gene activity and blood chemistry in ways that can reduce stress levels. Their study appears in ...

Rice University psychologist finds women's brains recognize, encode smell of male sexual sweat

A new Rice University study published in the Journal of Neuroscience found that socioemotional meanings, including sexual ones, are conveyed in human sweat. Denise Chen, assistant professor of psychology at Rice, looked at how the brains of female volunteers processed and encoded the smell of...

Bumblebees learn the sweet smell of foraging success

Bumblebees use flower scent to guide their nest-mates to good food sources, according to scientists from Queen Mary, University of London. For any animal, finding food on its own can be time consuming and inefficient; social animals such as bees reduce these problems by informing their peers of...

No more big stink: scent lures mosquitoes, but humans can't smell it

DAVIS--Mosquito traps that reek like latrines may be no more. A University of California, Davis research team led by chemical ecologist Walter Leal has discovered a low-cost, easy-to-prepare attractant that lures blood-fed mosquitoes without making humans hold their noses. The synthetic mix...

Meeting to highlight health impacts of smell and taste

What: The senses of smell and taste may have greater bearing on health than is generally accepted by both doctors and patients. Recent research suggests that these senses and their influence on behavior have implications for nutrition, aging, mental health, obesity, diabetes and safety. Researche...

International conference to release new findings on smell and taste

San Francisco - The International Symposium on Smell and Taste will be held at the Hyatt Embarcadero, in San Francisco July 21-26. Over 1,000 scientists will gather to present new information on the role of smell and taste in disease, nutrition and social interactions in humans as well as animals....

1 person out of every 1,000 has synaesthesia, in which an individual can smell a sound

This release is available in Spanish . The research field has grown from grapheme-colour synaesthesia to include other forms of synaesthesia in which flavours are evoked by music or words (lexical-gustatory synaesthesia), space structures by time units, colours by music, etc. Experts on Exp...

Wake up and smell the sweat

Some people are oblivious to the odor in the locker room after a game, while others wrinkle their noses at the slightest whiff of sweat. Research by Prof. Doron Lancet and research student Idan Menashe of the Molecular Genetics Department, which appeared recently in PLoS Biology, has now shown tha...

Penn State entomologists seek fungus to blunt mosquitoes' sense of smell

Sick people often lose their sense of smell and their appetite. If this happened to mosquitoes, they would not be able to feed on humans and spread malaria. A team of Penn State entomologists is looking for an insect disease that will infect mosquitoes and impair their sense of smell. Supported ...

New findings in taste and smell

Smell and taste play essential roles in our daily lives. The chemical senses serve as important warning systems, alerting us to the presence of potentially harmful situations or substances, including gas leaks, smoke, and spoiled food. Flavors and fragrances are also important in determining what...

Insects evolved radically different strategy to smell

Darwin's tree of life represents the path and estimates the time evolution took to get to the current diversity of life. Now, new findings suggest that this tree, an icon of evolution, may need to be redrawn. In research to be published in the April 13 advance online issue of Nature, researchers a...

Sweet smell

What makes one smell pleasant and another odious? Is there something in the chemistry of a substance that can serve to predict how we will perceive its smell? Scientists at the Weizmann Institute of Science and the University of California at Berkeley have now discovered that there is, indeed, suc...

Advance in effort to fight malaria by tricking the mosquito's sense of smell

By mapping a specialized sensory organ that the malaria mosquito uses to zero in on its human prey, an international team of researchers has taken an important step toward developing new and improved repellants and attractants that can be used to reduce the threat of malaria, generally considered ...

Get a whiff of this: Smell test could sniff out serious health problems

A new medical device in development by University of Cincinnati researchers may sniff out olfactory disorders that could be an early warning of Alzheimer’s disease, Parkinson’s disease and other problems outside the typical sensory loss associated with aging. The Sniff Magnitude Test (SMT), an inve...

Cloning the smell of the seaside

Scientists from the University of East Anglia have discovered exactly what makes the seaside smell like the seaside ?and bottled it! The age-old mystery was unlocked thanks to some novel bacteria plucked from the North Norfolk coast. Prof Andrew Johnston and his team at UEA isolated this mic...

Penn study on olfactory nerve cells shows why we smell better when we sniff

Unlike most of our sensory systems that detect only one type of stimuli, our sense of smell works double duty, detecting both chemical and mechanical stimuli to improve how we smell, according to University of Pennsylvania School of Medicine researchers in the March issue of Nature Neuroscience. ...

When smell cells fail they call in stem cell reserves

Hopkins researchers have identified a backup supply of stem cells that can repair the most severe damage to the nerves responsible for our sense of smell. These reservists normally lie around and do nothing, but when neighboring cells die, the scientists say, the stem cells jump into action. A repo...

Contrary to common wisdom, scientist discovers some mammals can smell objects under water

A Vanderbilt researcher has discovered that some stealthy mammals have been doing something heretofore thought impossible -- using the sense of smell under water. The results of the research by Vanderbilt's Kenneth Catania, assistant professor of biology, were reported Dec. 21 in the science jour...

Can dogs smell cancer?

In a society where lung and breast cancers are leading causes of cancer death worldwide, early detection of the disease is highly desirable. In a new scientific study, researchers present astonishing new evidence that man's best friend, the dog, may have the capacity to contribute to the process of...

Worms know bad food when they smell it

For most people, just a whiff of food that has made them sick in the past is enough to trigger a wave of nausea ?and to prevent them from eating that food again. It's a response that's instantaneous, involuntary, and so fundamental to basic biology that it occurs in a broad range of species. Even w...

New study examines how sense of smell affects mating and aggression in mice

New research by scientists at UCSF sheds light on how the odor detecting system in mice sends signals that affect their social behavior. "Understanding how mice process cues from the olfactory system--which regulates the sense of smell--should provide insight into the fundamental principles that...

Argonne to showcase science and technology at community open house

...p on special 3-D glasses to explore the outer edges of the universe Race the robot in a molecular biology speed challenge Test your sense of smell against an electronic nose View a chain reaction Calculate your environmental footprint Have fun with extreme cold and cryogenics ...

NYC science symposium marks Gruber Prize program 10th anniversary

... Basic Sciences at the Fred Hutchinson Cancer Research Center, whose research has provided key insights into the mechanisms that underlie the sense of smell in mammals and earned her the Nobel Prize in Physiology or Medicine, will speak on "Deconstructing Smell." Dr. Fred Gage, professor in the Laborat...

A breath mint made from... coffee?

...nd gum. Purified coffee extract can be added to a breath mint to stop bacteria from forming, stopping bad breath at its source, instead of masking the smell with a mint flavor. Prof. Rosenberg is a successful scientist and inventor who has already developed a popular mouthwash sold widely in Europe, a...

City rats loyal to their 'hoods, scientists discover

...arely migrate, neighborhood eradication efforts may backfire by encouraging the rodents to repopulate other areas and further spread disease. When you smell a rat, the researchers say, the best solution may be to tackle the problem on a much larger scale--perhaps by targeting entire families at once. Ra...

MSU discoveries upend traditional thinking about how plants make certain compounds

...ll change the way terpene (compounds that are responsible for the taste and smell of many plants) research is done. The research is published in the May 25 i...and protecting the plant from diseases, as well as giving many plants their smell and taste. The aroma of many leaf spices, such as mint and basil, come from...

American Chemical Society's weekly PressPac -- April 29, 2009

...n as wallboard, plasterboard, and gypsum board is composed of a gypsum, a chalk-like material. Spurred by complaints from homeowners that their homes smell like rotten eggs, investigators have traced the problem to drywall imported from China starting in 2004. But officials do not know the exact chemicals...

Taste, odor intervention improves cancer therapy, according to Virginia Tech, Wake Forest study

... hematology and oncology at Wake Forest. Their joint paper, "Taste and Odor Abnormalities in Cancer Patients", reports the "alteration of taste and smell in (cancer) patients has been understudied compared with other aspects of cancer research." They based their work on numerous previous studies tha...

A little java makes it easier to jive, researcher says

... CHAMPAIGN, Ill. Stopping to smell the coffee and enjoy a cup of it before your morning workout might do more than just get your juices flowing. It might keep you going for reasons yo...

Rice psychologist explores perception of fear in human sweat

...ans perceive information, Chen studied whether the smell of fear facilitates humans' other stronger senses....pressing buttons on a computer. Exposure to the smell of fear biased women toward interpreting facial ex...s modulate vision in an emotion-specific way." smell is a prevalent form of social communication in man...

Case Western Reserve researchers develop 'wireless' activation of brain circuits

...h programs. Strowbridge's laboratory is interested in how groups of neurons are wired together in both the brain regions responsible for the sense of smell and in the hippocampus, a critical brain area for both memory and epilepsy. Burda's laboratory uses chemically synthesized nanostructures to stud...

'Fishy' clue helps establish how proteins evolve

...found in only seven organisms. Each of these microbes evolved in an unusual environmental niche and all use methylamines the compounds that make fish smell "fishy" as a source of energy. Sll's research team characterized and crystallized the molecules that "manage" Pyl and created images that show how th...

Wonderful cheese is all in the culture

...research actually showed was this new group of bacteria - the reblochoni were responsible for the ripening process, influencing the taste, texture and smell of the cheese." Reblochon a soft, creamy, brie-like cheese is made in the Savoy mountain region of France. Using samples from three different fa...

Mothers pass on disease clues to offspring

...ith Babesia microti, which is a mild blood parasite causing few symptoms, but some anaemia. The partitioned cages allowed the females to see, hear and smell their infected neighbours, but not touch them, ensuring that the disease did not spread. Researchers then measured the effect of these 'ambient cues' ...

Shape changes in aroma-producing molecules determine the fragrances we detect

...YORK, December 22, 2008 - Shakespeare wrote "a rose by any other name would smell as sweet." But would it if the molecules that generate its fragrance were t...the journal " Chemistry & Biology ," shed new insight into how our sense of smell works and have potential applications in the design of flavors and fragranc...

Whispering bats are 100 times louder than previously thought

...lifestyles. She explains that the relatively large A. jamaicensis feeds on fruit, which it probably locates through a combination of senses, including smell and short-range echolocation whispers. But the bats have to search over large areas to find fruiting trees, and Surlykke suspects that the bat uses it...

'Fly guy' makes memory breakthrough

...found just 10 per cent of the fruit flies without the FMR1 gene avoided the smell that led to a shock, while 50 per cent of the normal flies knew enough to s...that reduced the production of protein in the brain remembered to avoid the smell associated with a shock almost as much as the normal flies. The next ste...

Computation and genomics data drive bacterial research into new golden age

...r noted, second messengers were known to play an important role in complex eukaryotes, for example in controlling processes as important as vision and smell in animals. But the full role of such molecules in controlling bacterial physiology is only just being appreciated. Even though bacteria are singl...

No place like home: New theory for how salmon, sea turtles find their birthplace

...close to the target, other senses, such as vision or smell, may be used to pinpoint specific reproductive sites. Salmon, for example, are known to use smell to locate spawning grounds once they have drawn near. Lohmann said one problem making it difficult to test the new theory is the low survival rate ...

Stomach ulcer bug causes bad breath

...argely caused by periodonitis, tongue debris, poor oral hygiene and badly fitted fillings," said Dr. Suzuki. "Bacteria produce volatile compounds that smell unpleasant, including hydrogen sulphide, methyl mercaptan and dimethyl sulphide. Doctors often measure the levels of these compounds to diagnose the p...
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