Navigation Links
New research examines genetics of successful aging

A study released today at the American College of Neuropsychopharmacology's Annual Meeting revealed that scientists have identified genes related to reaching age 90 with preserved cognition. The study, which was funded by the National Institutes of Health and conducted at the University of Pittsburgh, is among the first to identify genetic links to cognitive longevity.

"While successful aging has been defined in many ways, we focused on individuals who had reached at least 90 without significant decline in mental capacity," said lead researcher George S. Zubenko, MD, PhD, Professor of Psychiatry and Biological Sciences at the University of Pittsburgh School of Medicine. "Not only is this a goal that many of us share, this definition of 'successful aging' can be determined objectively and consistently across subjects--an important requirement of scientific studies."

While previous research found that genes make important contributions to exceptional longevity, the goal of this study was to identify regions of the human genome that contributed, along with lifestyle factors, to reaching age 90 with preserved cognition.

The study involved 100 people age 90 and older with preserved cognition, as measured by clinical and psychometric assessments. Half of the subjects were male, half were female. Using a novel genome survey method, scientists compared the DNA of the study sample with that of 100 young adults, aged 18-25 years old, who were matched for sex, race, ethnicity and geographic location. Specifically, Dr. Zubenko and his research team attempted to identify specific genetic sequences present in older individuals that may be linked to reaching older ages with preserved cognitive abilities, or conversely, specific genetic sequences present in younger individuals (and not present in those over age 90) that may impede successful aging. The study also looked at a variety of lifestyle factors, such as smoking and alcohol consumption, with t he goal of eventually exploring the interactive effects of genes and lifestyle on successful aging.

As expected, the study identified an increased frequency of the APOE E2 allele and a decreased frequency of the APOE E4 allele among the elders compared to the group of young adults. These gene variants confer protection and risk, respectively, of Alzheimer's disease, the most common cause of dementia in late life. The study also identified novel genetic regions associated with successful aging, including DYS389 and DYS390, some of which affected men or women, but not both.

"Historically women have lived longer than men on average, the prevalence of numerous serious diseases differs in men and women, and there are important differences in age-related physiological changes that occur between the sexes over the life span," said Dr. Zubenko. "It would not be surprising if the collection of genes that influences the capacity to reach old age with normal mental capacity differs somewhat for men and women." The results of the study also highlighted the detrimental effects of cigarette smoking and excessive drinking on successful aging in both sexes.

"The finding that genetics, lifestyle decision making, and their interactions, may influence the ability to reach old age with preserved cognition is exciting," stated Dr. Zubenko. "Identifying such genetic and behavioral factors may hold promise for better understanding the aging process and perhaps one day enriching or extending the lives of other individuals."



Related biology news :

1. Columbia research lifts major hurdle to gene therapy for cancer
2. U of M researcher examines newly emerging deadly disease
3. NYU researchers simulate molecular biological clock
4. First atlas of key brain genes could speed research on cancer, neurological diseases
5. New research questions basic tenet of neuron function
6. Vital step in cellular migration described by UCSD medical researchers
7. ASU researchers finds novel chemistry at work to provide parrots vibrant red colors
8. UCSD researchers maintain stem cells without contaminated animal feeder layers
9. Why do insects stop breathing? To avoid damage from too much oxygen, say researchers
10. New protein discovered by Hebrew University researchers
11. First real-time view of developing neurons reveals surprises, say Stanford researchers
Post Your Comments:

(Date:11/4/2015)... 4, 2015 --> ... published by Transparency Market Research "Home Security Solutions Market - ... 2015 - 2022", the global home security solutions market is expected ... 2022. The market is estimated to expand at a ... to 2022. Rising security needs among customers at homes, ...
(Date:10/29/2015)... 2015  Rubicon Genomics, Inc., today announced an ... its DNA library preparation products, including the ThruPLEX ... Plasma-seq kit. ThruPLEX Plasma-seq has been optimized for ... libraries for liquid biopsies--the analysis of cell-free circulating ... in cancer and other conditions. Eurofins Scientific is ...
(Date:10/27/2015)... Germany , October 27, 2015 ... SMI,s Automated Semantic Gaze Mapping technology (ASGM) automatically maps ... SMI,s Eye Tracking Glasses , so that they ... BeGaze. --> Munich, Germany , ... (ASGM) automatically maps data from mobile eye tracking videos ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... 26, 2015 --> ... 2016 - 2020 report analyzes that automating biobanking ... quality in long-term samples, minimizing manual errors, improving ... minimizes manual errors such as mislabeling or inaccurate ... it plays a vital role in blood fractionation, ...
(Date:11/25/2015)... HOLLISTON, Mass. , Nov. 25, 2015 ... HART ), a biotechnology company developing bioengineered organ implants ... McGorry will present at the LD Micro "Main ... 2:30 p.m. PT. The presentation will be webcast live ... Management will also be available at the conference for ...
(Date:11/25/2015)... Orexigen® Therapeutics, Inc. (Nasdaq: OREX ) ... chat discussion at the Piper Jaffray 27th Annual Healthcare ... discussion is scheduled for Wednesday, December 2, at 8:00 ... replay will be available for 14 days after the ... NormartVP, Corporate Communications and Business Development , BrewLife(858) 875-8629 ...
(Date:11/24/2015)... , ... November 24, 2015 , ... The United States ... of the 2016 USGA Green Section Award. Presented annually since 1961, the USGA Green ... or her work with turfgrass. , Clarke, of Iselin, N.J., is an ...
Breaking Biology Technology: