The Living Eternal Hydra

Jakarta - In ancient Greek mythology, the Hydra-headed monster known as much. He is unique and tough, because each one head was cut, will grow again two new chief as his successor.
A recent study revealed that hydra can live forever without aging.
A recent study revealed that hydra can live forever without aging.
The figure 'monster' it turns out there in the real world. Animals are named the same as the imaginary animal was not less unique and resilient.

A recent study revealed that hydra - freshwater polyp slim - possibility could live forever without aging.

According to recent research published in the journal Proceedings of the National Academy of Sciences, Dec. 7, unlike most other multicellular animals, hydra does not show signs of aging with age.

"I started early experiments with a view to proving that the hydra is impossible not to experience discovery," said Daniel Martinez, a researcher who is also a biologist Pomona College, as quoted from Live Science, Wednesday (12/23/2015). "The data available to prove that I am wrong - twice."

Eternal life

Hydra is a group of invertebrates that are shaped like small tubes, with tentacles that protrude from one end of his body. With a length that only about 10 millimeters, hydra living by eating animals smaller water from it.

The 'monster' hydra known as regeneratif capabilities. Martinez explained that most of the body's cells are stem cells hydra. These cells are able to divide continuously and develop into any type of cell in the body of the hydra.

In humans, the cells 'totipotent' of this kind - can flourish and turn into any cell - only there when the first days of embryonic development. Instead, Hydra constantly renew their body with new cells.

In 1998, Martinez and his colleagues published a study explaining that they did not find signs of aging on adult hydra during an interval of 4 years.

To detect aging, researchers observed a 'senescence' which is defined as the increase in the rate of mortality and fertility declines with age. Research in 1998 it could not ascertain whether the hydra fertility declines with age.

In the latest study, the researchers created a sort of island paradise for 2,256 hydra tub. The goal is to provide an ideal environment and living conditions for the animals, by feeding on their own each hydra, changing the water three times a week, and eat shrimp plus a menu of fresh sea water.

For 8 years, the researchers did not find any evidence of aging at the hydra-hydra. The death rate per year to survive in the figure of one for every 167 hydra, no matter what their age.

(Hydra 'oldest' studied is the result of clones that have been aged about 41 years - although each animal just studied for eight years, some of which are biologically older because it is the result of genetic clones.) Similarly with fertility rates remained constant throughout time at 80 percent of the hydra-hydra.

The remaining 20 percent fertility fluctuated up and down, most likely due to laboratory conditions.

"I believe that an individual hydra can live forever in appropriate conditions," said Martinez.

In the wild, disease, predators and water pollution often kill the hydra before it had reached the level of immortality. However, the present invention is suing the old model that considers all animals will definitely undergo aging over time.

This means that by examining the 'monster', scientists can unravel the mystery of why almost all animals aging.

"I hope this study could encourage other scientists to examine more in terms of eternity," explained Martinez, "may (examine) some other organisms that could help shed light on the mysteries of aging."

source : L6

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