Seeing The Unseen With 'Super-resolution' Fluorescence Microscopy Dec 25, 2008
In brain tissue, the researchers used STORM to reveal the fine details in the synaptic structure of the olfactory system. The lead author presented, "Seeing the Unseen in a Cell with Super-Resolution Fluorescence Microscopy," on Dec. 16 at the Moscone Center. (Science Daily)
Research uncovers puberty genes Dec 14, 2008
Dr. Deal, who is also president-elect of the Canadian Society of Endocrinologists and Metabolism, noted that some of the candidate genes involved in puberty are linked to the olfactory system. This would explain why some who suffer from HH can lack the sense of smell. (Globe and Mail)
What Is Wild? Odor Attraction Is Different Among Different Wildtype Flies Oct 14, 2008
By comparing the olfactory system of the fruit fly Drosophila melanogaster, which feeds from multiple fruit types. (Aug. (Science Daily)
Leaders want answers for fish fiasco Sep 12, 2008
Friday September 12, 2008. Assemblywoman Audrey Pheffer, City Councilman Joseph Addabbo Jr., center, and District Leader Frank Gulluscio call for a solution to problems of dead fish in Howard Beach. (Queens Chronicle, NY)
Sniffing it out Aug 2, 2008
However, so far no one has developed an electronic snout that can quite compete with the complex and highly sensitive canine olfactory system. But former dog handler, Bill Heiser is not convinced. (CNN -- International)
Hungry Flies Need Sense Of Smell Aug 2, 2008
The researchers worked with two strains of genetically modified fruit flies: one that couldn't smell and another that had a simplified olfactory system ... Those with the simplified olfactory system fared in between. (Science Daily)
Kiwi Fruit DNA Sequences Released Aug 2, 2008
(May 31, 2008) Scientists have looked at the problem of understanding the regulatory mechanisms that create different cells from a single template by using the olfactory system of the fruit fly. The ability to. (Science Daily)
Steroids In Female Mouse Urine Light Up Nose Nerves Of Male Mice Jun 20, 2008
The nerves researchers studied in the male mouse nose are located in an area known as the accessory olfactory system. Humans and many closely related apes don't have an accessory olfactory system, but most other mammals and some reptiles do ... The system, found in a structure called the vomeronasal organ, sends its outputs to a different part of the brain than the main olfactory system. (Science Daily)
Pesticides affect trout's sense of smell: study Jun 14, 2008
Scientists have known for some time that pesticides can damage a fish's olfactory system, but most studies looked at the impact of a single chemical in high concentrations. So researchers at SFU, working with Environment Canada and the Department of Fisheries and Oceans, decided to look at what impact a real-world mix of chemicals would have on the species. (Canada.com)
Coffee Beans May Be Newest Stress-Buster Jun 13, 2008
"Caffeine gets into the brain via the blood stream. Here, aromatic molecules get into the brain through the olfactory system. The levels in the air are parts per million, so obviously these are minor components in the air. But they are doing something.". Previous studies have shown that coffee consumption can reduce depression and suicide risk, as well as relieve stress, effects generally attributed to the caffeine in coffee, the researchers noted. (Health-Finder)
SCENT OF A BABY, FOR GROWN-UPS: Perfumers help women smell like babies, no matter what their age May 25, 2008
Urban's specialty is the olfactory system of mice, but that pathway, he says, is similar across all mammals. "Our ability to remember smells is really quite remarkable, sometimes after only a single presentation of a smell," Urban explains. (Orangeburg Times and Democrat, SC)
Five Body Parts We No Longer Need May 23, 2008
Larry Katz and a team at Duke University, North Carolina, have found that as well as the VNO, the main olfactory system in mice also responds to pheromones. If that is the case in humans too then it is possible that we may still secrete pheromones to influence the behaviour of others without using a VNO to detect them. (ABC News)
Learning to read mouse pee May 2, 2008
Scientists have long known that the vomeronasal organ (VNO), a sort of parallel olfactory system, is critical to male territorial aggression and mate selection among mammals, but few have looked at exactly how VNO neurons pick up the signals and transmit them to the brain. The vomeronasal organ is a sort of parallel olfactory system that is essential to male territorial aggression and mate selection ... The others may be responding to non-urinary cues or to the urine of other species, says Yu, a... (Why Files)
Unless you want to live in a bubble ... May 2, 2008
Observer wrote on Apr 29, 2008 11:07 AM:" To Kim: Oh come now!!! You can be in your car with the windows up, and if someone is smoking in a car next to you, you can smell it? Your olfactory system needs to be brought to the attention of the Guinness Book Of World Records. And I imagine when your next door neighbors' baby needs a diaper change, you don your gas mask until that unpleasant task is finished, also. Geez!!!! And NO I am not a smoker. ". window licker wrote on Apr 29, 2008 11:02 AM:"... (Sioux City Journal, IO)
The Tracking Dog's Nose Apr 22, 2008
200 million scent receptors in the dog olfactory system help sniff out drugs and explosives, locate termites, gas pipeline leaks, and other things you may not know about ... The canine olfactory system consists of soft tissue, bones, nerves, and parts of the brain. (Suite101.com)
Bowling transcript Mar 27, 2008
On the negative side, my olfactory system has been offended numerous times this season. Pittsburgh, PA: How does it feel to be selcted to team usa this year. (USA Today -- Sports)
Makes Scents Mar 21, 2008
What we do know, however, is that your nose s olfactory system is strongly associated with your emotions, learning, moods, sexual response, pleasure and memory. A simple whiff can trigger a flood of feelings, thoughts, and basic drives. (Fox News)
He knows the value of his hooter - about $8.5 million Mar 20, 2008
In 2003 the supermarket chain Somerfield insured the tongue and tastebuds of its senior wine buyer, Angela Mount, for a record 10 million, arguing that the skills of her "olfactory system" greatly increased its wine sales. Lloyd's also insures the nostrils of perfume specialists. (Sydney Morning Herald -- World)
Dutch vintner insures his nose for 3.9m Mar 19, 2008
In 2003, the supermarket chain Somerfield insured the tongue and tastebuds of its senior wine buyer, Angela Mount, for a record-breaking 10m, arguing that the skills of her "olfactory system" were responsible for greatly increasing its wine sales. Lloyd's also insures the taste buds of restaurateur Egon Ronay and the nostrils of perfume specialists. (Guardian Unlimited)
DEET works by masking body odor from bugs Mar 15, 2008
They use different receptors in their olfactory system the sensing system for smell to detect these odors to locate their prey ... The scientists tracked the electrical activity of cells in the mosquito olfactory system while exposing them to DEET. They found that it blocked bugs from smelling body odor but not the carbon dioxide in breath. (MSNBC -- Environment)
Chemicals Like DEET In Bug Spray Work By Masking Human Odors Mar 15, 2008
" Mosquitoes are strongly attracted to odors in human breath and sweat, including carbon dioxide, lactic acid and an alcohol-based compound called 1-octen-3-ol. Different receptors within their olfactory system detect these odors, among others, and lead them to their prey. DEET simply interferes with the proper functioning of odorant receptors, making the hunt for a tasty meal all the more difficult. But this interference is selective. To see DEET's effect on different odorant receptors, the... (Science Daily)
DEET Blocks Bugs From Smelling Humans as "Food" Mar 15, 2008
"Then they encounter a cloud of DEET and their olfactory system is jammed and they can't find you.". Powerful and Mysterious. (National Geographic)
Too much perfume 'signals depression' Jan 5, 2008
According to the researchers, certain diseases cause the body to attack the olfactory system which in turn governs the ability to detect smells. "This means an impaired sense of smell could be a pointer to other serious conditions.". (India Times)
Depression Tied To Sense Of Smell Jan 5, 2008
Immune System Problems Hurt Olfactory System ... He found that people with lupus or other immune system diseases develop a particle called an autoantibody that weakens the olfactory system and makes people feel depressed. (Click2Houston, TX)
Fruit Flies Learn and Remember Better When Lacking One Receptor Dec 22, 2007
28, 2004) Yale scientists, working with the fruit fly as a model, have discovered how odors are encoded by the olfactory system into the complex messages that are sent to the. . (Science Daily)
Human Noses Sort Out Strangers, Friends Dec 16, 2007
"Our study demonstrates that the olfactory system has preferential processing for behaviorally important stimuli," lead investigator Dr. Johan Lundstrom, former postdoctoral fellow at the MNI, said in a prepared statement. "This means that stimuli that are perceived as very important for us -- either for our survival, finding food, or [they] are carrying other important signals, such as mate selection signals -- are processed faster and more accurately by specialized neuronal networks. It is... (Health-Finder)
Pre-natal Alcohol Exposure Shapes Sensory Preference, Upping Odds Of Later Alcohol Use And Abuse Dec 14, 2007
Given the former, the olfactory system of a developing fetus becomes attuned to ethanol's chemosensory attributes ... The related study found strong evidence of the role of the olfactory system. (Science Daily)
Smell Experience Early In Life Alters Brain Dec 6, 2007
6, 2007) Unlike the circuitry of the visual system, that of the olfactory system was thought to be hardwired: Once the neurons had formed, no amount of sensory input could change their arrangement ... Rather, it may be a general feature of the olfactory system itself ... "This paper is the first compelling case that the olfactory system is plastic.". (Science Daily)
Campus Notes Nov 29, 2007
John Hildebrand of the University of Arizona will speak about "Explorations of a 'Simple' Olfactory System.". Alexander Razborov of the Institute for Advanced Study will speak at 4 p.m. today in 114 McAllister Building. (Daily Collegian, PA)
Odd Protein Interaction Guides Development Of Olfactory System Nov 4, 2007
The study reveals an unusual mechanism that is important to the development of the olfactory system, and perhaps to other parts of the nervous system, Hing said. But it also will interest cancer researchers, he said, because the genes that code for the Wnt class of proteins are oncogenes, which sometimes induce the growth of cancer cells. (Science Daily)
Do you find sweat repulsive? It may be down to your genes Oct 31, 2007
Like mice, we have about 1,000 different genes for the smell-detecting receptors in our olfactory system. However, over half of these genes have become defunct in the last few million years. (BBC News -- Health)
Why Garlic is Good for your Health Oct 21, 2007
"Sometimes it's called sewer gas. It's got a number of different names like that because it is very potent to our olfactory system and it is very toxic. It is a naturally occurring toxic gas, and if we smell a lot of it, if we get a, you know, a large whiff of it, it can paralyze your olfactory system and you can succumb to it. "So it is lethal, under high concentration. " Fortunately for us, at low doses it is highly beneficial. To start with, took mice blood vessels and bathed them in the... (Suite101.com)
Garlic-releasing gas fights disease, cancer: research Oct 16, 2007
It's got a number of different names like that because it is very potent to our olfactory system and it is very toxic. It is a naturally occurring toxic gas, and if we smell a lot of it, if we get a, you know, a large whiff of it, it can paralyse your olfactory system and you can succumb to it. (ABC Online)
Recent winners of Nobel in medicine Oct 8, 2007
- 2004: Richard Axel and Linda B. Buck of the United States for their work in studying odorant receptors and the organization of the olfactory system in human beings. - 2003: Paul C. Lauterbur, United States, and Sir Peter Mansfield, Britain, for discoveries in magnetic resonance imaging, a technique that reveals the brain and inner organs in breathtaking detail. (Herald Online, SC -- Health)
Cockroaches Are Morons In The Morning, Geniuses In The Evening Sep 29, 2007
"The fact that our study involves the olfactory system suggests that the circadian cycle could be influencing a number of senses beyond vision.". In the study, the researchers used cockroaches of the species Leucophaea maderae. (Science Daily)
Mystery Of A Third Olfactory System Unlocked Aug 31, 2007
Researchers at the University of Maryland School of Medicine have found a "nose within the nose," a unique olfactory system within the noses of mice that is able to "smell" hormones involved in regulating water and salt balance in the body ... The noses of mice and most other mammals contain both a main and accessory olfactory system ... ""This is evidence of an entirely different olfactory system mixed in with the main system in mice," says Dr. Munger. "It carries a very specific type of odor... (Science Daily)
Sniff test may detect disorders in early stages Aug 15, 2007
Because comparatively few brain cells are devoted to processing odors, "there's good reason to think the olfactory system is affected very early on with these conditions," said Richard Doty, director of the University of Pennsylvania's Smell and Taste Center, who has done research comparing the Sniff Magnitude Test with other smell-assessment measures ... "They've chosen some very good odors that stimulate the olfactory system effectively," Doty said. (International Herald Tribune)
Disabling a sensory organ prompts female mice to act like male mice Aug 6, 2007
While it is known that the organ is wired to the parts of the brain that govern reproductive behavior, its influence on gender-based behaviors was obscured in past studies because the surgical techniques used to ablate the organ flooded the nasal cavity with blood, disabling the olfactory system. To compare results from mice engineered to have a disabled vomeronasal organ, Dulac's group surgically removed the organ and ensured the nasal cavity was clear and the olfactory system operational. (EurekAlert!)
Neurosurgeon: Griz are sniffing champs of the wild Jul 29, 2007
believe they have the most impressive olfactory system of any animal on the planet ... Stevenson now knows, for instance, that the percentage of a bear's brain devoted to scent is at least five times greater than the percentage of human brain allocated to olfactory systems. (Missoulian, MT)
Integrated olfactory receptor and microarray gene expression databases Jul 1, 2007
Gene expression patterns of olfactory receptors (ORs) are an important component of the signal encoding mechanism in the olfactory system since they determine the interactions between odorant ligands and sensory neurons ... It facilitates the study of microarray experiments of gene expression in the olfactory system. (BioMed Central)
Making sense of taste (Shelley Widhalm) Jun 14, 2007
"When you chew food, it releases aromas ... that enter the olfactory system and contribute to the flavor of food," Mr. Davis says. Taste buds have about 100 taste cells, which have receptors attuned to one of the five taste qualities, Mr. Davis says. (Washington Times, DC)
New research shows sharks use their noses and bodies to locate smells May 30, 2007
The new study examined the contribution of the olfactory system, the lateral line, and vision in odor source detection and localization in the smooth dogfish shark. The results, which appear in the June 1 issue of the Journal of Experimental Biology, show that this shark is severely handicapped in its ability to locate the source of an odor when deprived of information from its lateral line, particularly in the dark. (EurekAlert!)
Yeast engineered to sniff out explosives May 9, 2007
In the journal Nature Chemical Biology Danny Dhanasekaran of Temple University School of Medicine, Philadelphia, and colleagues describe how they were inspired by the olfactory system of dogs, one which is highly sensitive to even previously unknown smells and sensitive enough to find land mines by smelling DNT.. The "business end" of the nose consists of proteins, called receptors, which dock with the chemicals responsible for a smell. (Telegraph.co.uk)
Noted Neurobiologist to Speak at Entomology Seminar Davis, May. 02 May 4, 2007
Hildebrand, a newly elected member of the National Academy of Sciences for distinguished and continuing achievements in original research, focuses his research on the insect's sense of smell, particularly the olfactory system of the giant sphinx moth, Manduca sexta ... He also will deliver a noon-hour seminar on "Explorations of a Simple Olfactory System" on Wednesday, May 16 in 122 Briggs Hall. (University of California Newswire, CA)
Cockroaches, flies, bees and fish among new recruits in war on terror... Mar 9, 2007
A small British biotechnology firm called Inscentinel is employing the finely tuned olfactory system of bees to sniff for explosives. And New York, California and Maryland are exploiting the highly sensitive nervous system of bluegill fish to test for toxins in municipal water supplies. (The Drudge Report)
Psychologist Explains The Neurochemistry Behind Romance Feb 15, 2007
"Pheromones are unlearned, and perhaps unsmellable, signals that enter the brain through the olfactory system. They can function in sex, alarm, territoriality, aggression, and fear," Kristal said, adding that while sex attractant pheromones may explain changes in libido, they don't explain why we choose a specific person for a mate. "In humans, specific mates are more probably chosen on the basis of other sensory cues: visual, regular olfactory, auditory and tactile cues," Kristal notes. (Science Daily)
Longevity By A Nose -- Or Odorant Receptor Feb 6, 2007
(June 28, 2004) -- Yale scientists, working with the fruit fly as a model, have discovered how odors are encoded by the olfactory system into the complex messages that are sent to the ... (November 24, 2004) -- Duke University Medical Center geneticists have discovered new proteins that help the olfactory system in mammals organize properly. (Science Daily)
Coho salmon making return to Pescadero Creek Jan 25, 2007
In addition, a hyper-sensitive olfactory system allows the fish to literally "smell" the creek. "It's a dramatic form of imprinting, but when you think about it, if the creek was good enough for spawning when the fish was born there, it's likely to be a choice place to spawn again," said MacFarlane. (Half Moon Bay Review, CA)
Bisexual Fruit Flies Show New Role For Neurochemical Jan 4, 2007
Fruit flies' ability to discern one sex from another may depend on the number of receptors on the surface of nerve cells, and the number of receptors is controlled by levels of a ubiquitous brain chemical, University of Illinois at Chicago researchers have found. Everything from the ability to concentrate, perceive and learn to debilitating illnesses such as amyotrophic lateral sclerosis, muscular dystrophy, post-traumatic stress syndrome and schizophrenia is influenced by the number of... (Science Daily)
