-Caveat Lector-
How long have they use pesticides and herbicides in Africa?
http://www.livelinks.com/sumeria/aids.html AIDS - Is AIDS really a
disease?
So the native animals in Africa are dying, I guess they will have to eat
cloned food too - or else starve.
Laura
AKA The Pied Piper
-----Original Message-----
From: Steve Wingate <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Monday, February 01, 1999 12:30 AM
Subject: [CTRL] Experts conclude AIDS virus originated from chimps
-Caveat Lector-
(Not the green monkey anymore? Sounds like: not a weather balloon, but a
mogul balloon! (Maybe someone with AIDs has been having their way with
chimpanzees?) --SW)
Experts conclude AIDS virus originated from chimps
Copyright © 1999 Nando Media
Copyright © 1999 Associated Press
By DANIEL Q. HANEY
CHICAGO (January 31, 1999 3:30 p.m. EST http://www.nandotimes.com) -
Where did the AIDS virus come from? Scientists think they have traced its
origin to the long-suspected source: chimpanzees.
In a presentation Sunday, researchers from the University of Alabama at
Birmingham said they have convincing proof that the virus has spread on at
least three separate occasions from chimpanzees to people in Africa. One
of these cross-species transmissions was the start of the epidemic that
now infects about 35 million people worldwide.
Chimps, which have probably carried the virus for hundreds of thousands of
years, apparently do not get sick from it. Figuring out why could be
important.
"This is excellent science with biological and virological importance. If we
understood how the chimp has dealt with this infection over time, that could
have implications for human medicine," said Kevin DeCock, an AIDS
expert at the U.S. Centers for Disease Control and Prevention in Atlanta.
While chimps have long been suspected as the source, "there have been a
lot of loose ends that made people uncomfortable drawing that conclusion,"
said Beatrice Hahn.
Whatever its origins, HIV is a recent affliction of people. At last year's
Conference on Retroviruses and Opportunistic Infections, David Ho and
others from the Aaron Diamond AIDS Research Center at Rockefeller
University presented evidence that the virus probably first infected humans
in the 1940s or early '50s.
At the opening of this year's meeting, Hahn made the case that this event
almost certainly occurred in west equatorial Africa when someone caught
the virus from a chimp, perhaps after killing the animal for food.
Hahn said her team nailed down the connection by analyzing frozen tissue
saved from a chimp named Marilyn that died from complications of
childbirth at a U.S. Air Force primate center 14 years ago.
The chimp version of the AIDS virus - the microbe now thought to be the
grandfather of HIV - is called SIVcpz. It is extremely rare among chimps in
U.S. lab colonies, apparently because these animals are removed from the
wild as babies and so are never exposed to the virus sexually.
Until recently, SIVcpz had been isolated only three times.
The fourth turned up when a colleague cleaning out a lab freezer ran across
Marilyn's specimens and sent them to Hahn. Her team was able to perform
various kinds of genetic analysis that were unavailable when the chimp
died.
Then the Alabama team used molecular analysis techniques to study all
four examples of the virus.
They found that three of the four were genetically extremely similar to the
human AIDS virus. They included one gene, called vpu, that also is part of
HIV but not of other AIDS-like viruses that infect monkeys.
All three samples came from Pan troglodytes troglodytes, which is one of
the four subspecies of chimp in Africa. These animals live in Cameroon,
Equatorial Guinea, Congo and Central African Republic, the region where
AIDS is thought to have started.
The fourth sample, much less like HIV, came from another subspecies of
chimp that is native to East Africa.
Among humans, there are three major groups of HIV, code-named M, N
and O. M is the variety that has spread around the world, while N and O are
seen only in west-central Africa. The natural habitat of Pan troglodytes
troglodytes exactly overlaps the area where these three groups were first
recognized. The researchers believe that each group arose from a
separate chimp-to-human transmission of SIVcpz.
"We conclude that this subspecies is the natural host and reservoir for HIV-
1," the AIDS virus, said Hahn, whose work is also being published in this
week's issue of the journal Nature.
She said a French team, headed by Phillippe Mauclere of the Pasteur
Institute, recently found three more chimps infected with SIVcpz at a game
sanctuary in Cameroon. One sample has been genetically analyzed and it,
too, closely resembles HIV.
"That nails it," said Hahn. "The only possible criticism is that we had made
too much out of four animals."
------------------------------------------------------------------------
Steve Wingate
California Director
SKYWATCH INTERNATIONAL
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==========
CTRL is a discussion and informational exchange list. Proselyzting propagandic
screeds are not allowed. Substance—not soapboxing! These are sordid matters
and 'conspiracy theory', with its many half-truths, misdirections and outright
frauds is used politically by different groups with major and minor effects
spread throughout the spectrum of time and thought. That being said, CTRL
gives no endorsement to the validity of posts, and always suggests to readers;
be wary of what you read. CTRL gives no credeence to Holocaust denial and
nazi's need not apply.
Let us please be civil and as always, Caveat Lector.
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