Discovery Freezing Technique
Sperm Research by Dr.Mulyoto Pangestu of effort freezing the sperm of animals in a way
simple and inexpensive give him
won the highest award (Gold Award)
Young Inventors Awards competition, which The magazine held Far Eastern Economic Review (FEER) and Hewlett Packard Asia Pacific.
The discovery of Dr. Mulyoto is very useful for scientists and doctors in the country developing the lack of funds to hold the cooling equipment.
Cold storage equipment for storing
organic materials usually require
liquid nitrogen as a cooling agent
(Coolant). In addition to the tanks are expensive and eat place, liquid nitrogen is very dangerous.
You see, in order to remain liquid, this type nitrogen
should be kept below minus 196
degrees Celsius. Dr.Mulyoto Pangestu actually found how to dry and store sperm at room temperature because it use the services of nitrogen gas.This makes Dr.Mulyoto beat hundreds of competitors from various countries in Asia Pacific material
wearing very cheap, only Rp
2500, -. The material used is a two-tier mini plastic tube (0.250 ml size and 0.500 ml) were sealed with heat (heat-sealed), then wrapped again with aluminum foil. Biology doctoral candidate from Monash University is calling process drying sperm discovery as evaporative drying (evaporative drying).
Sperm drying or storage
sperm at room temperature, is already reported since the 1970's. However, these reports are still limited information. Only in July 1998, Wakayama and Yanagimachi of the University of Hawaii publish their findings on the journal Nature Biotechnology, such as birth
child mice fertilized using dried and frozen sperm (freeze-dried sperm).
After looking at several other studies
and the study of literature, finally Dr.Mulyoto and supervisor, Dr. Jillian Shaw, concludes that sperm can be stored in a conditions dry and oxygen-free. Result Dr.Mulyoto invention is packaging storage of dried and frozen sperm does not require special handling and
the results can still be used even after stored for years. Indeed, sperm
animals that have been dried with This Dr Mulyoto method is not able to move again (immotile),
and by examination using
dyes, it is known that sperm
"Dead". In order to fertilize the egg, cell sperm must be injected into the egg. This technique is known as the
Intracytoplasmic Sperm Injection (ICSI) and already widely used in the manufacture of baby human tube.
Dr.Mulyoto at all not tried out the method for sperm humans because of ethics permit only for animals. Sperm are already drained from mice (mice),marmosets (a type of monkey), and also wombat
(Native to Australia). Dr. Mulyoto invention now is in the process patented in Australia.
Patents of Dr.Mulyoto invention now belong to Monash University, but he still will listed as the inventor.
