August 9, 2010

Life Is a Highway

1 More Americans Die on Rural Roads Than Urban Ones

Americans are more likely to die on rural roads than on urban highways finds a new survey that attributes this statistic to drivers who feel more relaxed and are more prone to take risks on rural roads. The Federal Highway Administration says that six of 10 highway deaths occur on rural roads. However, 79 percent of survey respondents said they felt safe on two-lane rural roads while 69 percent said they felt safe on multi-lane urban highways. Americans also said they are more likely to take risks such as eating or talking on cell phones while driving on rural roads. “ ... Americans seem to be lulled into a false sense of security on our tranquil rural highways,” says Lee Munnich, U of Minnesota’s Ctr. for Excellence in Rural Safety. He added, "We have a lot of education to do.”

More at ScienceDaily.com | Posted 7 years ago by Melody Lesser

Previously: Summer, Not Winter Is Deadliest Time for Driving

Tags: Federal Highway Administration, University of Minnesota's Center for Excellence in Rural Safety, Auto Accidents, Car Accidents, Car Accident Deaths, Rural Roads, Urban Highways, Lee Munnich, Safe Driving

Comment on This | Was this Interesting? Yes! (46%) / No! (54%)

Hormones Affect Reaction

2 Cycle Affects Change in Vitals When Intubated

A woman’s menstrual cycle affects changes in blood pressure and heart rate when intubated, according to a study in Turkey. The study involved 62 healthy women, half in the follicular phase and the other half in the luteal phase of their cycle. An increase in blood pressure and heart rate when intubated was seen in both groups, but those in the luteal phase saw a 30 percent greater increase. Dr. Steven L. Shafer said, "The hormones that govern the menstrual cycle, estradiol and progesterone, have significant analgesic properties. It is not surprising that fluctuations in these hormones might be associated with different responses to tracheal intubation, depending on the phase of the menstrual cycle." Based on these results, researchers recommend women have surgery in the follicular phase.

More at Yahoo! Health Day | Posted 7 years ago by Kristie Hayes

Previously: HRT May Prevent Brain Aneurysms

Tags: Blood Pressure, Heart Rate, Menstrual Cycle, Luteal Phase, Follicular Phase, Ventilation, Intubation

Comment on This | Was this Interesting? Yes! (45%) / No! (55%)

Test 100 Percent Accurate

3 Biomarker in Spinal Fluid Diagnoses Alzheimer’s

A study supported by two smaller studies showed that biomarkers in spinal fluid predict Alzheimer’s disease with 100 percent accuracy many years before symptoms appear. The signature was observed in over 90 percent of the 102 people with Alzheimer’s, 72 percent of the 200 with mild cognitive impairment and 36 percent of 114 people who were cognitively normal. A smaller study showed that 94 percent of patients were correctly classified as having Alzheimer's. Another demonstrated 100 percent accuracy when determining who went on to develop Alzheimer’s over five years. The test met most of the criteria developed in the late 1990s which is more than 80 percent accurate in detecting disease, technically reliable and reproducible, noninvasive, easy to do and inexpensive.

More at Yahoo! AFP | Posted 7 years ago by Kristie Hayes

Previously: Gum Disease May Increase Risk for Alzheimer’s

Tags: Alzheimer’s, Cognitive Impairment, Test for Alzheimer's, Spinal Fluid, Biomarker Test

Comment on This | Was this Interesting? Yes! (55%) / No! (45%)

Block Gene To Get Regeneration

4 Spinal Cord Nerve Cells Regenerated in Young Mice

By knocking out a gene called PTEN that stops the growth of nerve cells, scientists from Harvard Medical School and University of California-Irvine were able to regenerate spinal cord nerves in young mice. Whether it restored spinal cord function and can be translated into a treatment for humans with spinal cord injuries is unknown but is the next step in this research. It is known that at birth it is possible to grow new nerve cells and as one ages, that ability diminishes. Researchers are very hopeful based on the results but acutely aware of the challenges. Dr. Michael Coleman of the Babraham Institute in Cambridge believes it may be possible to reverse spinal injuries by "Finding drugs to block the same pathway...”The study can be found in Nature Neuroscience.

More at BBCC | Posted 7 years ago by Kristie Hayes

Previously: Mountain Bike Riding Increases Spinal Injuries

Tags: Spinal Cord Injuries, Spinal Cord Regeneration, PTEN, Nerve Cell Growth

Comment on This | Was this Interesting? Yes! (46%) / No! (54%)

The Sound of Sleep

5 Spindles in Brain Block Noises During Sleep

A study examining why some people can get a good night’s sleep compared to others may have to have to do with being able to block out noises. Twelve healthy volunteers slept at a sleep clinic for three nights. The first night was quiet but the second and third nights were full of noises such as ringing telephones, road and air traffic and the beeping of hospital equipment. Volunteers were monitored with electroencephalograph (EEG) while they slept. Those who had the highest rate of spindles on the first night were less likely to be woken up by the noises made on the second and third nights. Somehow the spindles generated by the thalamus, known as the gateway of sensory information, block out the noise. The goal of the study was to enhance the brain’s natural rhythm that protects sleep.

More at BBC | Posted 7 years ago by Kristie Hayes

Previously: Seven Hours of Sleep Is Optimal for Heart Health

Tags: Sleep, Sound, Blocking Out Sound, Thalamus, Electroencephalograph, EEG

Read the Comments (1) | Was this Interesting? Yes! (42%) / No! (58%)

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