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Tag: "age" at biology news

Indicators for risk of heart disease are higher in passive smokers

...participants were women, with participants' median age being 38. Eighteen percent of participants had no detectable levels of cotinine; the rest were classified as having either low or high cotinine. Eighteen percent of participants with low levels of cotinine and 56 percent of subjects with high levels...

Grape expectations for healthier wine

...ines to prolong their shelf-life and allow them to age can make their wines unpalatable to some drinkers. Francisco Artes-Hernandez and his team at the Technical University of Cartagena in Spain compared several different preservative methods with a new technique that involves exposing macroperforated...

MU researcher placing eye implants in cats to help humans see

...d one or two years old and are completely blind by age four. To date, Narfstrom has performed surgeries in severely visually impaired or blind cats. During the surgery, Narfstrom makes two small cuts into the sclera, the outer wall of the eyeball. After removing the vitreous, which is the ge...

Mailman School of Public Health researchers report blood DNA can be early predictor of liver cancer

...gnosis. Certain clinical risk factors such as age and hepatitis B and C virus infections, are well documented risk factors for the development of HCC. According to the study findings, these factors coupled with smoking and alcohol status, and alterations found in this study in serum DNA, resulted i...

Vasectomy may put men at risk for type of dementia

... have a higher rate of vasectomy than men the same age who are cognitively normal. The dementia is Prima...nts connected the onset of his language problem at age 43 to the period after his vasectomy. At a twice-yearly Chicago support group for PPA patients W...

Scientists find potential 'off-switch' for HIV virus

...e genetic circuits work so that we can enter a new age of drug design," he said. "Rather than just giving a static drug, we might one day design therapies that are precisely timed to turn off viruses just like a natural genetic circuit might." ...

Canadian study shows bilingualism has protective effect in delaying onset of dementia by four years

...c, indicating comparable levels of impairment. The age of onset of cognitive impairment was determined by...ticed. The researchers determined that the mean age of onset of dementia symptoms in the monolingual group was 71.4 years, while the bilingual group was...

20-year study shows significant rise in childhood obesity, especially among girls

...l numbers of girls and boys from each of the three age groups ?four, ten and 16 - included in both samples. The data was drawn from official child health and school health records, as parents have a tendency to under-report the weight of obese children and are less likely to take part in studies. "Des...

UBC researchers reveal dwarf aquatic plants' hidden ancestry

...ersify, at least 135 million years ago, during the age of the dinosaurs. Fully grown individuals in the Hydatellaceae family can be as small as 1-2 centimetres in height, and have dozens of minute flowers clustered into each compact flower head. Native to Australia, New Zealand and India, they thr...

Bioluminescence at the service of a novel cerebral imaging technique

...stration of sexual dimorphism) or as a function of age (changes to cerebral activity during ageing). The Drosophila is an excellent model for the study of ageing and longevity, because it has recently been shown that flies endowed with a mutation of the insulin receptor live much longer. It is also...

Hofmeyr skull supports the 'Out of Africa' theory

...t Oxford University allowed them to determined its age at just over 36,000 years ago by measuring the amount of radiation that had been absorbed by sand grains that filled the inside of the skullâ?super>TM s braincase. At this age, the skull fills a significant void in the human fossil record of sub-...

Selective marker found to indicate aggressive form of breast cancer

...st cancers, this subtype is known to have an early age of onset and a very short time between treatment and relapse. It is more commonly detected during normal screening mammogram intervals than other screening subtypes, which likely reflects its aggressive nature. These important clinical correlations ...

Twin studies reveal genetic components leading to cardiac and kidney disease

...n DNA, versus those determined by the environment, age or how a person cares for his or her health, factors such as medical care or diet and exercise. In a series of studies published in the American Heart Association journals Circulation and Hypertension, O’Connor has identified particular genes that i...

New research shows that flu is a trigger of heart attacks

...s the same for both men and women and in different age groups. Researchers believe that flu causes an acute and severe inflammation in the body, which, in some patients, can destabilise atherosclerotic plaques [2] in coronary arteries and cause heart attacks. Prof Madjid said: "Most people develop ...

40,000-year-old skull shows both modern human and Neandertal traits

...bon dating of the specimen produced only a minimum age (more than 35,000 years), but similarity in morphological traits with the Oase 1 human mandible ?found in 2002 on the surface of the cave, adjacent to the excavation area, and dated to about 40,500 years ago ?lead the team to conclude that the two fo...

Elderly spinal cord injuries increase five-fold in 30 years, Jefferson neurosurgeons find

...at 20 percent of its population will be older than age 65 by the year 2040, and will likely impact spine ... prevalence of cervical spinal stenosis with older age (3) an increased rate of motor vehicle accidents per mile driven It is also believed that thes...

Scientists discover a new risk factor for Alzheimer's

...ate-onset Alzheimer's, which usually strikes after age 65. In an advance online publication in Nature Genetics on January 14, 2007, St George-Hyslop and colleagues connected the gene to the disease in six different groups of people, although they did not pinpoint the exact genetic mutations in SORL1 re...

Stem cell transplants explored at Stanford as a possible treatment for hearing loss

...rts now estimate that one in three adults over the age of 65 has developed a handicapping hearing loss. Coming up with the answers is a slow process, Heller said. "This research takes time and money, but we remain hopeful we'll have some principle answers soon." ...

Flavanols in cocoa may offer benefits to the brain

...nol-rich cocoa to healthy volunteers who were over age 50 and observed a “striking blood flow response?that evolved over several weeks. “Since this cocoa preparation is so well tolerated, it raises hope that the brain blood flow response it stimulates can result in maintenance of healthy brain function ...

Computer imaging assists with facial reconstructive surgery

... and medical record review of 14 patients (average age 32, 12 females and two males) who underwent combined rhinoplasty (nose surgery) and chin correction at an academic medical center between 1999 and 2004. Six of the patients received implants in their chins, while eight underwent a procedure known as...

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