A genetic factor that protects you against heart disease during middle age could reduce the odds that youll celebrate your hundredth birthday. Research published in BMC Medical Genetics shows that a genetic trait, which is rarely found in centenarians, is associated with lower cholesterol levels.
The risk of suffering from heart disease is increased by a number of factors, including having high levels of low-density lipoprotein cholesterol in your blood. The main component of low-density lipoprotein is apoliprotein(b) whose quality and quantity are related to the quality and expression of the APOB genes you have.
In a previous study, Professor Giovanna De Benedictis found that older, healthy people were most unlikely to carry short versions of a DNA region that neighbours the APOB gene. "This indicates that the short alleles are unfavourable to longevity," she says. In contrast, these short versions are over-represented in healthy, middle-aged adults, indicating that these variants of the APOB gene region play a protective role at this point in your life.
Her group have now analysed both the variability in the DNA surrounding the APOB gene and the low-density lipoprotein cholesterol levels in over 400 healthy volunteers, between the ages of 20 and 102. The aim was to see if there was any link between the two factors.
Their results show that people with short variants of the APOB gene region have significantly lower levels of total cholesterol and low-density lipoprotein cholesterol in their blood.
The authors of the study write: "On the whole, the short alleles would be advantageous in adults, by protecting them from high levels of LDL-Cholesterol, while dangerous in the elderly, probably by lowering serum cholesterol below a critical threshold."
In line with these findings, the researchers showed that patients suffering from heart disease as a consequence of having high low-density lipoprotein cholesterol levels were less likely to have one or more short variants of the APOB gene region, compared to healthy volunteers.
"On the whole, the study confirms that genetic risk factors are age-specific and gives possible insights into another paradox of centenarians," write the authors.
This press release is based on the following article:
A study of the average effect of the 3APOB-VNTR polymorphism on lipidemic parameters could explain why the short alleles (<35 repeats) are rare in centenarians.
S Garasto, M Berardelli, F De Rango, V Mari, E Geraco and G De Benedictis
Why might reading make myopic?
18.07.2018 | Universitätsklinikum Tübingen
Unique brain 'fingerprint' can predict drug effectiveness
11.07.2018 | McGill University
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
19.07.2018 | Earth Sciences
19.07.2018 | Power and Electrical Engineering
19.07.2018 | Materials Sciences