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Blind humans lacking rods and cones retain normal responses to nonvisual effects of light
12-13-2007 · EurekAlert!In addition to allowing us to see, the mammalian eye also detects light for a number of "nonvisual" phenomena. A prime example of this is the timing of the sleep/wake cycle, which is synchronized by the effects of light on the circadian pacemaker in the hypothalamus.
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Keywords: blind, humans, lacking, rods, cones, retain, normal, responses, nonvisual, effects, light, human, rod, cone, response, effect
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Similar news on "Blind humans lacking rods and cones retain normal responses to nonvisual effects of light":
- Blind humans lacking rods and cones retain normal responses to non-visual effects of light
12-13-2007 · EurekAlert!
In addition to allowing us to see, the mammalian eye also detects light for a number of "nonvisual" phenomena. A prime example of this is the timing of the sleep/wake cycle, which is synchronized by the effects of light on the circadian pacemaker in the hypothalamus.
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- Researchers propose reason for severe side-effects of Northwick Park clinical trial
01-25-2007 · EurekAlert!
A possible reason why the Northwick Park clinical trial of the drug TGN1412 in the UK caused multiple organ failure in human volunteers is revealed in research presented today at a conference near Paris. The research shows that stimulating the molecule CD28 on cells that mediate the immune response, known as T cells, can have an adverse effect if these immune cells have been activated and altered by infection or illness in the past.
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- Does a peptide affect the heart's response to social isolation?
04-29-2007 · EurekAlert!
A team of researchers investigating the effects of oxytocin, a peptide produced by the brain that regulates social behavior, has found that it can prevent detrimental cardiac responses in adult female animals exposed to social isolation. The findings may provide further insight into how these mechanisms affect humans.
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- A longer-living, healthier mouse that could hold clues to human aging
10-22-2007 · EurekAlert!
A study by scientists at UCL shows that mice lacking the insulin receptor substrate-1 are more resistant to aging than normal mice. The research adds to a growing body of work showing the importance of insulin signaling pathways as an aging mechanism in mammals -- and potentially humans.
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- UC Santa Barbara scientists clarify molecular basis of interferon action
07-19-2007 · EurekAlert!
Scientists at the University of California, Santa Barbara have made a significant discovery relating to viral infections in humans. They studied how a certain enzyme called PKR behaves in human cells, and showed that this enzyme is important for the antiviral effect of interferon against some viruses, but not others. Interferon is a naturally occurring substance that is also used as a drug to treat certain viruses such as Hepatitis C.
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- Auditory neurons in humans far more sensitive to fine sound frequencies than most mammals
01-10-2008 · EurekAlert!
Measuring the response of single cells in humans, UCLA researchers have discovered that auditory neurons in our brains can discern the subtlest of sound frequencies, far superior to what almost all non-human animals can discern.
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- Modifying an anti-cancer drug makes it more specific
12-03-2007 · EurekAlert!
Imatinib is used to treat chronic myeloid leukemia and gastrointestinal stromal tumors because they are caused by related proteins. However, this lack of specificity means imatinib also affects normal bodily functions and it has been reported to have a toxic effect on the heart in some patients. Now, researchers have modified imatinib so it inhibits the protein behind GISTs but neither inhibits the protein behind CML nor has toxic effects on the mouse heart.
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- Zebrafish to shed light on human mitochondrial diseases
09-13-2007 · EurekAlert!
Zebrafish can now be used to study COX deficiencies in humans, a discovery that gives scientists an unprecedented window to view the earliest stages of mitochondrial impairments that lead to potentially fatal metabolic disorders, according to researchers at the University of Oregon.
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- Pregnant mom's exposure to flu vaccine kick-starts fetal immune system
06-01-2007 · EurekAlert!
Researchers have hypothesized that the fetus can mount an immune response against allergens to which the mother has been exposed, possibly resulting in allergic sensitivity later in life. Columbia University researchers examined the cord blood of newborn infants of mothers that had received the influenza vaccine during pregnancy. They found that B and T cell immune responses to vaccine antigens did occur in utero, suggesting that the neonatal immune system is not wholly lacking.
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- Prenatal alcohol exposure appears to increase an infant's stress response
11-27-2006 · EurekAlert!
little is known about the effects of prenatal alcohol exposure (PAE) on stress systems in infants. New findings indicate that the greater the PAE, the greater the cortisol, autonomic and emotional responses to social challenges in young infants. The days between conception and pregnancy recognition may be especially critical for fetal stress-response development.
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