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hair in Biological News

Sulphur in just one hair could blow a terrorist's alibi

... focused on the most abundant sulphur isotopes in hair keratin sulphur-32 (32S), which accounts for ... to confirm that the sulphur variations in hair can be linked to peoples' geographical movements. ... experiment The researchers collected hair samples of more than 4cm in length donated by ...

Diminuendo -- New mouse model for understanding cause of progressive hearing loss

... seed region influences the production of sensory hair cells in the inner ear, both in the mouse and in ... if they carry two of these mutants, their sensory hair cells are impaired from birth on. A number of ... which are necessary for long-term survival of hair cells and thus to find new approaches for ...

Scaling the wall of deafness

... leads to deafness as well." A Cure a hair Away? MicroRNAs can already be used to ... wearing down of specialized sensory cells, called hair cells located in the inner ear. Responsible for ... of the microRNA molecules, and as a result, the hair cells degenerated in the mouse ears. A few weeks ...

Diet secrets of 'the Royals'

... and analyzed carbon and other isotopes in tail hair to monitor the elephants' movements and diet from ... to grab with their trunks, elephant tail hair shows a ratio of carbon isotopes different forms ... cut 1.8-foot-long samples of tail hair. The hair grows about an inch per month, so a ...

Case Western Reserve University receives $1.66m grant from NIH for otoprotection research

... cochlea to the brain. Dr. Zheng believes residual hair cells in the cochlea could promote the survival ... the discovery of therapeutic targets that prevent hair cell death, as this is the key to helping Usher 1 ... said Zheng. "An alternative to replacing lost hair cells is to prevent their loss in the first ....

New insights into progressive hearing loss

... of hundreds of other molecules within sensory hair cells of the inner ear. The research provides ... to disrupt development of intricate sensory hair cells in the mutant mice. Mice with two copies of the mutant gene had malformed hair cells from birth and the cells degenerated from ...

Researchers develop flow sensors based on hair structures of blind cavefish

... navigation, and marine research. "These hair cells are like well-engineered mechanical ... where the deflection of the jelly-encapsulated hair cell measures important flow information," said ... preliminary experiments with a simple artificial hair cell microsensor made of SU-8, a common ...

Using hair to manage HIV/AIDS and predict treatment success

... that examining levels of antiretroviral drugs in hair samples taken from HIV patients on therapy ... that the levels of antiretrovirals found in the hair of patients on treatment correlated strongly with ... blood. "High levels of antiretrovirals in hair correlated with success in HIV viral suppression ...

No longer a gray area: Our hair bleaches itself as we grow older

... why we turn gray. Despite the notion that gray hair is a sign of wisdom, these researchers show in a ... of hydrogen peroxide due to wear and tear of our hair follicles. The peroxide winds up blocking the ... pigment. "Not only blondes change their hair color with hydrogen peroxide," said Gerald ...

New use for human hair

... available waste generated from barbershops and hair salons, combined with additional compost, is an ... nutrient source for crops. Although human hair has become commercially available to crop ... whether commercially available noncomposted hair waste cubes would support plant growth in ...

More food at lower cost

... and lead author on the paper, said: "Each root hair is a single, elongate cell and the length of each hair depends on having an adequate supply of the plant ... very surprising: auxin is not delivered to root hair cells directly, but via the cells next door which ...

Researchers discover baldness gene: 1 in 7 men at risk

... economic impact is considerable: expenditures for hair transplantation in the United States alone ... is the most common form of baldness, where hair is lost in a well-defined pattern beginning above ... identify the cause." "Early prediction before hair loss starts may lead to some interesting ...

Important new hair-loss gene discovered

... may now account for the similarity in cranial hair growth between father and son. The ... of just under 300 men suffering from marked hair loss, investigating for this purpose over 500,000 ... an earlier study that this receptor was linked to hair loss. However, the other region was new to us". ...

Virus weaves itself into the DNA transferred from parents to babies

... Parents expect to pass on their eye or hair color, their knobby knees or their big feet to ... through the placenta. HHV-6 DNA was found in the hair of one parent of all children with integrated ... at conception. The virus's DNA was not found in hair samples of parents of children who were infected ...

Why a common treatment for prostate cancer ultimately fails

... growth just like the same molecule does to hair in different locations on a man's head. The ... "The effects of the androgen receptor on hair growth in men vary dramatically depending on ... is very active in the mustache area, more hair grows. When it's very active on the top of the ...

American Chemical Society's Weekly PressPac -- Aug. 13, 2008

... ARTICLE #1 Heads-up study of hair dynamics may lead to better hair-care products ... From frizzy perms to over-bleached waves, "bad hair days" could soon become a less frequent ... analysis of what happens to individual hair fibers when they interact with each other, an ...

Woolly-mammoth gene study changes extinction theory

... The scientists analyzed the genes in hair obtained from individual woolly mammoths -- an ... that revealed ancient DNA survives much better in hair than in any other tissue investigated so far. ... sequences of extinct animals. Moreover, mammoth hair is found in copious quantities in cold ...

USGS April 2008 science picks

... bear rubs and how they respond to baited hair traps. The video and photographs are part of a ... and counted through genetic analysis of hair samples collected from barbed wire hair traps and bear rub trees. To find out more about ...

Additional evidence of wolverine found in the Tahoe National Forest

... 150 square miles) with remote cameras and hair snares was established and monitored. Ground ... of the equipment including a wolverine hair snare and camera site. These combined ... a search of 155 miles. Approximately 50 scat and hair samples were found and sent to the Forest Service ...

A screening strategy using zebrafish targets genes that protect against hearing loss

... the sensory structures in the inner ear, called hair cells, can be irreversibly damaged, resulting in ... team developed a screening strategy that uses hair cells in the lateral line of zebrafish larvae to signal how hair cells in a persons inner ear might respond under ...

Columbia geneticists uncover new gene involved in determining hair texture and density in humans

... has discovered a new gene involved in determining hair texture in humans. The team's genetic analysis ... known as P2RY5, cause hereditary "woolly hair" hair that is coarse, dry, tightly curled and sparse. ... primary function seems to be the determination of hair texture in humans," said lead author Angela M. ...

USC researchers identify mechanism that controls activation of stem cells during hair regeneration

... presents a new dimension for the regulation of hair re-growth and ultimately organ regeneration." The hair is an important model for organ regeneration in ... notes. Recent work in the field has established hair cycling as one of the mainstream models for organ ...

Study of bear hair will reveal genetic diversity of Yellowstone's grizzlies

... Locks of hair from more than 400 grizzly bears are stored at ... Ranging from pale blond to almost black, the hair is filed in a chest freezer where the temperature ... Some of the tufts are almost 25 years old. The hair will head to Canada in a few months to be ...

Walking tall to protect the species

... at the properties of ape hair, infant grip, adult hair density and carrying position, Amaral demonstrates a relationship between infant weight, hair friction and body angle which ensures ape infants ... author goes on to suggest that the fall in body hair in primates could have brought on bipedality as a ...

Scientists develop a fast system to detect metal concentrations in iron and steel industry workers

... marker analyses (blood and urine) with saliva and hair samples. Then, depending on the matches, the ... whether it is possible to use saliva and hair as metal markers in continuous exposure to ... In addition to blood, urine, saliva and hair analyses, scientists will interview workers to ...

Red hair and freckles...

... 2007). A fashion magazine recently asked what hair colours were in this year, prophesizing an ... (and the German population) have naturally red hair - caused by a mutation in the gene mc1r. The ... instead of the dark melanin in their skin, hair and eyes. This gives them much more sensitive, ...

454 Sequencing: Science paper describes a novel, highly efficient method of sequencing ancient DNA

... Shotgun Sequencing of Mitochondria from Ancient hair Shafts" appears online (ahead of print) today in ... way to study the genomes of extinct animals: hair shafts provide an ideal source of ancient DNA. Typically, DNA sequencing from hair involves ...

Origins of wolverine in California genetically verified

... the latest edition of Northwest Science and focus on genetic analysis of hair collected from the first scientifically verified California wolverine in ... from other North American populations. Last year, scientists collected hair and fecal samples from the photographed animal so that its DNA could be ...

Gladstone scientists reveal that fat synthesizing enzyme is key to healthy skin and hair

... was very sensitive to retinol. The loss of DGAT1 also caused alopecia, or hair loss. Both of these effects could be prevented by depriving the mice of a ... "These findings may have implications for the treatment of human skin or hair disorders." ...

Salk researchers successfully reprogram keratinocytes attached to a single hair

... iPS cells from the tiny number of keratinocytes attached to a single hair plucked from a human scalp. Their method, published ahead of print in ... KiPS cells from minute amounts of biological samples. "We plucked a single hair from a co-worker's scalp and cultured the keratinocytes, which are found ...

When particles are so small that they seep right through skin

... five-thousandth the width of a human hair. If the width of that strand of hair were equivalent to the length of a football field, a typical nanoparticle ... the body. In her study, she found that the particles accumulate around the hair follicles and in tiny skin folds. DeLouise, a chemist, points out that ...

Nothing stops an expert in the art of living

... somehow disrupting the glue's adhesive powers? Touching a sticky hair against a piece of mirid bug cuticle and looking at it with cryo-SEM, the ... over the thick greasy surface. However when they looked at a R. gorgonias hair in contact with a section of blowfly cuticle, the glue formed a discrete ...

How nonstick bugs evade natural fly paper

... somehow disrupting the glue's adhesive powers? Touching a sticky hair against a piece of mirid bug cuticle and looking at it with cryo-SEM, the ... over the thick greasy surface. However when they looked at a R. gorgonias hair in contact with a section of blowfly cuticle, the glue formed a discrete ...

How non-stick bugs evade natural fly paper

... somehow disrupting the glue's adhesive powers? Touching a sticky hair against a piece of mirid bug cuticle and looking at it with cryo-SEM, the ... over the thick greasy surface. However when they looked at a R. gorgonias hair in contact with a section of blowfly cuticle, the glue formed a discrete ...

Male cyclists risk sexual problems if they don’t choose the right bike

... enter the back of the scrotum and penis. "This area is sensitive, with hair follicles and sweat and sebaceous glands, which are all good breeding grounds for infection. "Abrasions, chafing, damaged hair follicles and bruising are among the most traumatic cycling injuries. ...

2 new therapies show promise for cancer patients

... side effects, including a loss of sense of taste, and a small amount of hair loss and weight loss, suggesting a viable new treatment option. GDC-0449 ... and is ongoing, Von Hoff says, with almost no side effects beyond minimal hair loss. He came to us short of breath and in pain, but he has had a very ...

Popular apple variety harbors unusual cell growth

... successful long-term storage particularly in modified atmospheres. Callus hair growth, with its own oxygen requirement and carbon dioxide output, may ... how growth conditions and orchard management affect the extent of callus hair development. ...

Southern California institutions to collaborate on stem cell research

... in the inner ear (cochlea) are supporting cells that may help manipulate hair cell regeneration to restore hearing. Future work seeks to more fully ... at the same time examining their potential in therapeutic approaches to hair cell regeneration. "We look forward to the establishment of this new ...

Skin oil -- ozone interactions worsen air quality in airplanes

... air quality could have a new culprit to blame: the oils on their skin, hair and clothing. A study in the current issue of ACS Environmental Science & ... More than half of the byproducts were the result of reactions with skin, hair and clothing, according to Charles Weschler, Ph.D., the studys lead ...

American Chemical Society's Weekly Presspac -- Aug. 29, 2007

... so small that about 10,000 would fit across the diameter of a human hair overcome that problem, the report states. The sponges can be loaded with ... microscopic cylinders of carbon thousands of times smaller than a human hair are one of the most promising raw materials for commercial and industrial ...
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(Date:11/5/2014)... career to understanding the Earth,s climate and communicating ... deputy director and regional climatologist for the Western ... Redmond has more than three decades of experience ... data to the general public. , At its ... December 15-19, 2014 the American Geophysical Union (AGU) ...
(Date:11/4/2014)... 2014) — Think about the way our bodies are ... cells know that they are supposed to become a ... tissues find the correct place and alignment? Researchers at ... questions. , In a new study, UM researchers describe ... their surrounding neighbors, at the head-trunk region. Their discovery ...
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