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CCBAR Newsletter – April, 2007

Editors:  Natalia Gavrilova and Stacy Tessler Lindau

CCBAR News

The proceedings for the 4th Annual Biomeasures Workshop (2006) are now published.  Please visit  CCBAR website at    http://biomarkers.uchicago.edu/workshopproceedings.htm   to download the online version. 

The registration for the 5th Annual Interdisciplinary Biomeasures Workshop (and first-ever international gathering) continues.  For Workshop agenda please visit CCBAR website at: http://biomarkers.uchicago.edu/Agenda-2007.html.  Please contact Karl Mendoza: kmendoza@babies.bsd.uchicago.edu or 773-834-4832 for more information.

News From the Nature Journals, Science, BMJ and PNAS

Mitochondrial DNA mutations and aging: a case closed?
Recent reports of premature aging in mutant mice with greatly increased rates of mitochondrial DNA mutagenesis (so-called 'mitochondrial mutator mice') appeared to confirm that accumulation of mtDNA mutations is a key mechanism of normal aging. Now, in a dramatic turnaround, a new study reports that levels of point mutations in tissues of aged normal mice are much lower than in the mutator mice, apparently ruling out a causal role in normal aging.

Shaping the future of biomarker research in breast cancer to ensure clinical relevance...
In November 2005, the National Breast Cancer Coalition Fund convened a conference aimed at developing a patient-centred, strategic approach to breast cancer biomarker research. The consumers, clinicians, researchers, industry representatives and US regulators who served on the consensus panel developed a set of principles and recommendations to guide the field and ensure that biomarker research results in clinically important applications.

[Genetics] Regulation of Caenorhabditis elegans lifespan by a proteasomal E3 ...  The proteasome maintains cellular homeostasis by degrading oxidized and damaged proteins, a function known to be impaired during aging. The...

[Neuroscience] Consolidation of learning strategies during spatial working me...  Working memory is a temporary memory store where information is held briefly until the appropriate behavior is produced. However, the...

[Genetics] A bile acid-like steroid modulates Caenorhabditis elegans lifespan...  Broad aspects of Caenorhabditis elegans life history, including larval developmental timing, arrest at the dauer diapause, and longevity, are regulated...

[Evolution] Adaptive evolution in humans revealed by the negative correlation...  The selective forces acting on amino acid substitutions may be different in the two phases of molecular evolution: polymorphism and...

[REPORTS] The Evolutionary Demography of Ecological Change: Linking Trait Var...   The number of sheep in a population with larger individuals increases more rapidly in years with low survival, showing how ecological variation influences selection pressure.


Biomarkers and Aging in the News Media

New Genetic Biomarkers Could Predict Coronary Heart Disease
New genetic markers may be able to predict whether a person is likely to have coronary heart disease in the future. Research shows that people who are pre-diabetic or who have Type 2 diabetes have much shorter telomeres (ends of the chromosome) and, since these people are prone to CAD, an early test could indicate their susceptibility and help them to alter their lifestyle to avoid or delay the onset of the disease.
Supplements: No scientific evidence that they work
Every morning, Dr. Frank Pinto pops not one or two vitamins, not just a handful, but more than two dozen dietary supplements, in hopes of gaining energy, warding off disease and slowing down the aging process. Americans spend billions of dollars a year on dietary supplements. Yet for all the money spent, and growing interest from mainstream physicians, virtually no evidence exists that supplements can improve your health
100-Year Olds' Secret To Longevity
The key to long life is a vivid interest in the world around you, a survey of 100-year-olds suggests.
Less Sleep May Lower Testosterone
Less sleep may be linked to lower testosterone levels among older men, say researchers who studied declining testosterone in adults.
Criteria for Depression Are Too Broad, Researchers Say
Up to 25 percent of people in whom psychiatrists would currently diagnose depression may only be reacting normally to stressful events such as a divorce or losing a job, according to a new analysis that reexamined how the standard diagnostic criteria are used.
Hormone therapy risk for older women seen
While additional research is needed, the unexpected findings should prompt cautious use of estrogen and progestins, even by women in their 50s, doctors said.
Hispanic Women At Higher Risk For Breast Cancer - May Be Biological
A new study provides evidence that racial differences in the clinical presentation of breast cancer may be due more to biological factors rather than differences in access to health care alone.
Effect Of Hormone Therapy On Risk Of Heart Disease May Vary By Age And Years ...
Secondary analyses of findings from the Women's Health Initiative suggest that women who begin hormone therapy within 10 years of menopause may have less risk of coronary heart disease (CHD) due to hormone therapy than women farther from menopause. Overall, hormone therapy did not reduce the risk of CHD.
Gene Linked To Increased Risk Of Stroke
One of the most common genetic defects passed on through families significantly increases a person's chance of having a stroke, according to a study published in the March 27, 2007, issue of Neurology, the scientific journal of the American Academy of Neurology.
Mom-to-be's weight gain may lead to fat toddler
Study could bring guidelines change. The standard advice for how much weight a woman should gain during pregnancy might need to be changed, concludes a rigorous and provocative study suggesting that even accepted weight gains might raise the risk of having an overweight toddler.
Aspirin 'aids women's hearts'
Healthy women who take a low dose of aspirin could cut their risk of dying early, a study suggests.
Trans fats linked to greater heart disease risk
A study published today supports recent efforts to rid the American diet of trans fats. In the study, women with the highest levels of trans fat in their blood had triple the risk of heart disease as those with the lowest levels.
Study Links Child Care to Problem Behavior
The more time that children spent in child care, the more likely their sixth grade teachers were to report problem behavior....
Hopkins study finds racial differences in heart function
Race might help determine a person's risk of heart failure, according to a study by Johns Hopkins researchers, who found that blacks had the weakest heart muscle among racial groups studied.
Common Fungicide Causes Long-term Changes In Rats' Mating Behavior
Female rats avoid males whose great-grandfathers were exposed to a common fruit crop fungicide, preferring instead males whose ancestors were uncontaminated, researchers from The University of Texas at Austin have discovered.
Meningitis 'reduces exam success'
Battling meningitis as a baby has a damaging effect on later academic achievement, a study suggests.
Blood sugar 'boosts cancer risk'
Women with high blood sugar levels are at an increased risk of developing cancer, a major European study finds.
New DNA Clue For Schizophrenia?
Scientists say they have discovered a tiny chunk of DNA that may affect schizophrenia risk.
Diet, Exercise May Lower Colon Cancer Risk
Some studies have shown exercise can reduce the risk of colon cancer by half. More research is needed to prove a direct link, but some vegetables may trigger a chemical process turning on a gene that suppresses tumors, Kelly Wallace reports.
Scarred for Life: Rat Nerve Cells Damaged by Stress
One socially crushing moment -- think schoolyard bullies -- can challenge the survival of new nerve cells in the brain and may even lead to depression, U.S. researchers said Tuesday.
Longevity gap lessens for blacks
Gains credited mainly to decline in homicides, better HIV treatment. Whites still live longer than blacks, but the gap is shrinking, mainly because death rates are dropping for causes that have historically hit African-American communities particularly hard, HIV and homicide, researchers announced yesterday.
Biologist sees human morality evolving from the sociality of primates
In "Primates and Philosophers," the primatologist Frans de Waal defends against philosopher critics of his view that the roots of morality can be seen in the social behavior of monkeys and apes, while Marc Hauser, an evolutionary biologist at Harvard, proposed in his book "Moral Minds" that the brain has a genetically shaped mechanism for acquiring moral rules.
Younger baby boomers report poorer overall health
Researchers wonder if those nearing retirement are expecting too much in the way of good health.


NIH Press Releases

Effect of Hormone Therapy on Risk of Heart Disease May Vary by Age and Years ...
Secondary analyses of findings from the Women's Health Initiative (WHI) suggest that women who begin hormone therapy within 10 years of menopause may have less risk of coronary heart disease (CHD) due to hormone therapy than women farther from menopause. Overall, hormone therapy did not reduce the risk of CHD. However, the farther a woman was from the onset of menopause when she began hormone therapy, the greater her risk of CHD due to hormone therapy appeared to be. Although these findings did not meet statistical significance, they suggest that the health consequences of hormone therapy may vary by time from menopause.

Calcium Plaque Build-up in the Arteries Leads to Coronary Heart Disease in Mu...
Having a build-up of calcium plaque in the arteries means increased risk of heart attacks and death from heart disease in multiple ethnic groups, according to new findings from the Multi-Ethnic Study of Atherosclerosis (MESA) funded by the National Heart, Lung, and Blood Institute of the National Institutes of Health.

Early Child Care Linked to Increases in Vocabulary, Some Problem Behaviors in...
The most recent analysis of a long-term NIH-funded study found that children who received higher quality child care before entering kindergarten had better vocabulary scores in the fifth grade than did children who received lower quality care.

Researchers Discover a Common Variation in a Gene Segment that Increases the ...
Researchers report that a variation in a portion of DNA strongly predicts prostate cancer risk and that this common variation may be responsible for up to 20 percent of prostate cancer cases in white men in the United States. The research was conducted by investigators from the National Cancer Institute (NCI), part of the National Institutes of Health, and their partners in the Cancer Genetic Markers of Susceptibility (CGEMS) initiative.

NIDA Study Identifies Genes That Might Help Some People Abstain From Smoking ...
Scientists supported by the National Institute on Drug Abuse (NIDA), part of the National Institutes of Health, have for the first time identified genes that might increase a person's ability to abstain from smoking. The breakthrough research was conducted by Dr. George Uhl at NIDA's Intramural Research Program and a team led by Dr. Jed Rose at the Center for Nicotine and Smoking Cessation Research at Duke University Medical Center.

NIH Announces Phase III Clinical Trial of Creatine for Parkinson's Disease - ...
The NIH National Institute of Neurological Disorders and Stroke (NINDS) today is launching a large-scale clinical trial to learn if the nutritional supplement creatine can slow the progression of Parkinson's disease (PD). While creatine is not an approved therapy for PD or any other condition, it is widely thought to improve exercise performance. The potential benefit of creatine for PD was identified by Parkinson's researchers through a new rapid method for screening potential compounds.

Tiny, Spontaneous Gene Mutations May Boost Autism Risk - March 15, 2007
Tiny gene mutations, each individually rare, pose more risk for autism than had been previously thought, suggests a study funded in part by the National Institute of Mental Health, a component of the National Institutes of Health.

Framingham Study Shows Parents Who Live Long Pass On Lower Risk of Cardiovasc...
New evidence suggests that if you could choose your parents, you could reduce your risk of cardiovascular disease. Researchers from the long-standing Framingham Heart Study (FHS), a program of the National Heart, Lung, and Blood Institute (NHLBI) of the National Institutes of Health, report that people whose parents live longer were more likely to avoid developing high blood pressure, high cholesterol, and other risk factors for cardiovascular disease in middle age than their peers whose parents died younger. They also found that the risk factor advantages persisted over time.

NIH Announcements

Diet Composition and Energy Balance (R01)
Research on Ethical Issues in Human Subjects Research (R01)
Brain Disorders in the Developing World: Research Across the Lifespan (R01)
Research on the Economics of Diet, Activity, and Energy Balance (R01)
Research on Sleep and Sleep Disorders (R01)
Functional Links between the Immune System, Brain Function and Behavior (R01)
Research on Mind-Body Interactions and Health (R01)
Social and Cultural Dimensions of Health (R01)

Events

2007 NICHD-NCES Early Childhood Longitudinal Study, Birth Cohort (ECLS-B) First Release Conference to be held May 8th-10th in Bethesda, MD.

Alzheimer's Disease Biomarkers:
How Can Specific Population Groups Help Us Identify/Validate Biomarkers for Presymptomatic Diagnosis and Drug Development?
June 7th - 8th, 2007, Marriott Wardman Park Hotel, Washington D.C.

6th European Congress of Gerontology, 5 to 8 July 2007, St Petersburg, Russia

60th Annual Scientific Meeting of The Gerontological Society of America, November 16-20, San Francisco, United States

 
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This Newsletter  is supported by a grant from the National Institute on Aging, National Institutes of Health (Grant No. 5 P30 AG012857)