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CREATION IS A ETERNAL MYSTERY....AS TO KNOW CREATION FULLY ONE HAS TO KNOW THE CREATION bRHmH.... Posted by Vishva News Reporter on April 4, 2003 |
Human reproduction is probably one of the most complex process in the
processes of universal creation....a human body has many of the 33 karor
(330 million) Devtaao present to
empower all functions of the human body...a Devtaa
is a shkti (a power of the creator
bRHmH) which has a dedicated function in the creation, sustenance and cyclic
recreation of bRHmaaND (universe) we
live in and all the creations in the universe we live in..
...look at our DNA molecule....it has an estimated 3 billion codes in it...in
a DNA molecule one cannot even see with naked eyes...and researchers think only
5 percent of this 3 billion codes is "useful"...and the rest 95 percent of the
codes the researchers think is "junk::...think again ....as everyday researchers
are finding what they did not know yesterday...so one day the 95 percent "junk"
will mean something....veD says
nothing in this universe is created for nothing by
creator bRHmH...and each and every creation of word,
thought and deed in animate and inanimate creation has a genesis in the eternal
cyclic nature of creation .....(submitted by the PVAF volunteer
SRii champaklal daajibhaai mistry of
Edmonton, Alberta, Canada)
Now in laboratory tests, the researchers have found that human sperm has a
receptor, or chemical sensor, that causes the sperm to swim vigorously toward
concentrations of a natural attractant....proves that sperm does respond to a
chemical signal by swimming toward the source, which is the egg....the
study by Zimmer and his co-authors is a significant advance in understanding how
the sperm and egg find each other....
To have more knowledge of the
above research, please click on the next line or on this web site
MSNBC NEWS
HEALTH
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Researchers have shown that sperm, which are stained in this photo
so their behavior can be observed, are able to find female eggs by
following a chemical attractant. |
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A sperm can follow its ‘nose’ |
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Sperm are able to detect attractive chemicals in eggs |
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ASSOCIATED PRESS |
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WASHINGTON, March 27 — Like
a hummingbird following fragrance to a flower, the male sperm follows
chemical attractants to find the female egg. Researchers now have identified
a key part of the process and say the discovery could lead to a new form of
contraception that does not depend on hormones, or to help for infertility. |
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‘This
is a landmark piece of work.The holy grail in reproductive biology has been
to find the sperm attractant and to understand how it works.’
—
DR. DONNER F. BABCOCK
Researcher at the University of Washington in Seattle. |
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IN LABORATORY
TESTS, the researchers have found that human sperm has a receptor, or
chemical sensor, that causes the sperm to swim vigorously toward
concentrations of a natural attractant.
The precise compound present in the human female reproductive tract
has not been identified, the researchers said. But the new study, using a
laboratory compound called bourgeonal, proves that sperm does respond to a
chemical signal by swimming toward the source, said Richard K. Zimmer, a
professor of biology at UCLA and a co-author of the study appearing Friday
in the journal Science.
Zimmer said the researchers also identified another compound, called
undecanal, that shuts down the sperm receptor and keeps it from responding
to an attractant.
Although much more research must be done, Zimmer said the twin
discoveries could lead to new drugs that could, depending on their use,
overcome some fertility problems or inhibit conception.
Some human reproduction researchers said the study by Zimmer and his
co-authors is a significant advance in understanding how the sperm and egg
find each other.
LANDMARK WORK
“This is a landmark piece of work,” said Dr. Donner F. Babcock, a
researcher at the University of Washington in Seattle. “The holy grail in
reproductive biology has been to find the sperm attractant and to understand
how it works.
“This is the strongest evidence we have so far that the egg signals
its location to the sperm and the sperm responds by swimming toward the
egg,” said Babcock. |
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In the study, Zimmer and his co-authors at UCLA and the Ruhr
University Bochum in Germany demonstrate that the surface of human sperm has
a receptor, called hOR17-4, that causes the sperm to navigate in a specific
direction when it detects a concentration of bourgeonal.
It long has been known that there are chemical signals between the
female egg and the male sperm that help the two to find each other. But the
new study is the first to demonstrate that the sperm will respond in a
predictable and controllable way to a chemical signal.
EGG SUBSTANCE UNKNOWN
Now, Zimmer said, the goal is to find the precise compound provided
by the egg that activates the sperm’s directional swimming. |
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Zimmer said government policies
and rules that limit federally funded research using human eggs is hampering
the search for the natural human sperm attractant thought to be secreted by
the female egg.
Once such an attractant is found, he said, researchers should be able
to develop techniques that would inhibit conception without the use of
hormones.
RESEARCH IMPLICATIONS
Zimmer said it may be possible to develop a compound, inserted into
the female reproductive tract, that would confuse the directional signals
the sperm needs to find and fertilize the egg.
“You may not stop fertilization completely, but what this would do is
discourage it or inhibit as much as possible,” he said.
Babcock said understanding how sperm and egg find each other might
lead to solutions for infertility in some couples.
“A large number of human infertility problems are not understood,” he
said. “If we know for certain that this sperm receptor plays a role, then it
would be possible to develop tests to determine if the egg is making the
attractant or if the sperm has the receptor.” |
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Couples who are
infertile because of poor signaling between sperm and egg could then be
identified and treated, he said.
Marc Spehr of Ruhr University, a co-author of the study, said in a
statement that bourgeonal may have a role in fertility clinics by helping to
identify healthy, high-quality sperm cells that would be most successful in
fertilizing the egg.
© 2003 Associated Press. All rights reserved. This material may
not be published, broadcast, rewritten or redistributed.
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