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Judi Lynn

(160,545 posts)
Tue Feb 2, 2016, 11:46 PM Feb 2016

Pandora’s Box: How GM Mosquitos Could Have Caused the Zika Virus Outbreak

Pandora’s Box: How GM Mosquitos Could Have Caused the Zika Virus Outbreak
February 2, 2016
by Oliver Tickell

Since August 2015, a large number of babies in Northeast Brazil have been born with very small heads, a condition known as microcephaly, and with other serious malformations. 4,180 suspected cases have been reported.

Epidemiologists have found a convincing correlation between the incidence of the natal deformities and maternal infections with the Zika virus, first discovered in Uganda’s Zika Valley in 1947, which normally produces non-serious illness.

The correlation has been evidenced through the geographical distrubution of Zika infections and the wave of deformities. Zika virus has also been detected in the amniotic fluids and other tissues of the affected babies and their mothers.

This latter finding was recently reported by AS Oliveira Melo et al in a scientific paper published in the journal Ultrasound in Obstetrics & Gynecology, which noted evidence of intra-uterine infection. They also warn:


“As with other intrauterine infections, it is possible that the reported cases of microcephaly represent only the more severely affected children and that newborns with less severe disease, affecting not only the brain but also other organs, have not yet been diagnosed.”

More:
http://www.counterpunch.org/2016/02/02/pandoras-box-how-gm-mosquitos-could-have-caused-the-zika-virus-outbreak/
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Pandora’s Box: How GM Mosquitos Could Have Caused the Zika Virus Outbreak (Original Post) Judi Lynn Feb 2016 OP
OMG! Petrushka Feb 2016 #1
Playing God has a funny way of backfiring. forest444 Feb 2016 #2

Petrushka

(3,709 posts)
1. OMG!
Tue Feb 2, 2016, 11:58 PM
Feb 2016

< snip >

Has the GM nightmare finally come true?

So down to the key question: was the Oxitec’s GM Aedes aegypti male-sterile mosquito released in Juazeiro engineered with the piggyBac transposon? Yes, it was. And that creates a highly significant possibility: that Oxitec’s release of its GM mosquitos led directly to the development of Brazil’s microcephaly epidemic through the following mechanism:

1 Many of the millions of Oxitec GM mosquitos released in Juazeiro in 2011/2012 survive, assisted, but not dependent on, the presence of tetracycline in the environment.

2 These mosquitos interbreed with with the wild population and their novel genes become widespread.

3 The promiscuous piggyBac transposon now present in the local Aedes aegypti population takes the opportunity to jump into the Zika virus, probably on numerous occasions.

4 In the process certain mutated strains of Zika acquire a selective advantage, making them more virulent and giving them an enhanced ability to enter and disrupt human DNA.

5 One way in which this manifests is by disrupting a key stage in the development of human embryos in the womb, causing microcepahy and the other reported deformations. Note that as Melo Oliveira et al warn, there are almost certainly other manifestations that have not yet been detected.

6 It may be that the piggyBac transposon has itself entered the DNA of babies exposed in utero to the modified Zika virus. Indeed, this may form part of the mechanism by which embryonic development is disrupted.

In the latter case, one implication is that the action of the gene could be blocked by giving pregnant women tetracycline in order to block its activity. The chances of success are probably low, but it has to be worth trying.

No further releases of GM insects!

While I am certainly not claiming that this is what actually took place, it is at least a credible hypothesis, and moreover a highly testable one. Nothing would be easier for genetic engineers than to test amniotic fluids, babies’ blood, wild Aedes mosquitos and the Zika virus itself for the presence of the piggyBac transposon, using well established and highly sensitive PCR (polymerase chain reaction) techniques.

If this proves to be the case, those urging caution on the release of GMOs generally, and transgenic insects bearing promiscuous transposons in particular, will have been proved right on all counts.

But most important, such experiments, and any deployment of similar GM insects, must be immediately halted until the possibilities outlined above can be safely ruled out. There are plans, for example, to release similarly modified Anopheles mosquitos as an anti-malarial measure.

There are also calls for even more of the Oxitec Aedes aegypti mosquitos to be released in order to halt the transmission of the Zika virus. If that were to take place, it could give rise to numerous new mutations of the virus with the potential to cause even more damage to the human genome, that we can, at this stage, only guess at.
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forest444

(5,902 posts)
2. Playing God has a funny way of backfiring.
Wed Feb 3, 2016, 12:34 AM
Feb 2016

And not just on those who do so; but often on the rest of us too.

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