I am really getting tired of refuting people like MMu and MattLB with
actual scientific evidence. They, on the other hand, enjoy attacking
my obvious typographical errors. If you listen to these guys, your
health may be at serious risk. MattLB recently attacked what I said
about tightly wound DNA an cancer cells, yet it was on sciencedaily.com
a few weeks back. DO SOME RESEARCH - AND CITE SOME RESEARCH, rather
than making ludicrous, non-scientific attacks. As for the lead claim,
here is the evidence. I'm not sure what planet MMu is on, but the
problems that lead causes in the body are well-known and free radical
mediated. How much evidence do I have to post here? The worst attacks
are from those who say that with oxygen, one can't live, therefore
worrying about free radicals makes no sense. However, what I am
talking about are processes like in vivo lipid peroxidation (which is
fats going rancid in your body) or chronic inflammation, which
generates free radicals in large amounts and damages tissue and organs.
This has nothing to do with mitochondrial respiration, which indeed
should be optimal, not reduced in any way, but these people need red
herrings to justify their moronic claims.
Here's a refutation to MMu's claims about the effects of lead:
Toxicological Sciences 69, 149-156 (2002)
Copyright © 2002 by the Society of Toxicology
MOLECULAR AND GENETIC TOXICOLOGY
Tea Catechins Protect against Lead-Induced Cytotoxicity, Lipid
Peroxidation, and Membrane Fluidity in HepG2 Cells
Liuji Chen*, Xianqiang Yang*, Hongli Jiao and Baolu Zhao,1
* Department of Tea Science, Zhejiang University, Hangzhou, China
310029; and Laboratory of Visual Information Processing, Research
Centers of Brain and Cognitive Science, Institute of Biophysics,
Academia Sinica, 15 Datun Road, Chaoyang District, Beijing, China
100101
Recent studies have shown that lead causes oxidative stress by inducing
the generation of reactive oxygen species (ROS) and reducing the
antioxidant defense system of cells. This suggests that antioxidants
may play an important role in the treatment of lead poisoning as a kind
of excellent scavenger of free radicals and chelator of heavy metal.
Whether tea catechins have protective effects against oxidative stress
after lead treatment in cell systems remains unclear. The present study
was designed to elucidate if tea catechins have any protective effects
on lipid peroxidation damage in lead-exposed HepG2 cells. Exposure of
HepG2 cells to Pb++ decreased cell viability and stimulated lipid
peroxidation of cell membranes as measured by the thioburbituric acid
reaction. Electron spin resonance (ESR) spin-labeling studies indicated
that lead exposure could decrease the fluidity in the polar surface of
cell membranes. Tea catechin treatment significantly increased cell
viability, decreased lipid peroxidation levels, and protected cell
membrane fluidity in lead-exposed HepG2 cells in a
concentration-dependent manner. The galloylated catechins showed a
stronger effect than nongalloylated catechins. Cotreatment with
(-)-epigallocatechin gallate (EGCG) and (-)-epicatechin (EC),
(-)-epicatechin gallate (ECG), and (-)-epigallocatechin gallate (EGCG)
showed a synergistically protective effect. The results suggest that
tea catechin supplementation may have a role to play in modulating
oxidative stress in lead-exposed HepG2 cells.
http://toxsci.oxfordjournals.org/cgi/content/abstract/69/1/149
Just remeber one thing: free radical DAMAGE is the key to "chronic
disease," and if you search on pubmed.com you'll find many researcher
saying this explicitly. So by attacking me, they are actually
attacking the scientific process. What they gain by doing this is
beyond my comprehension, but it probably has to do with some sort of
psychological imbalance in their brains - probably due to the
polyunsaturated fatty acid, arachidonic. Do a pubmed.com search for
arachidonic and you'll see that this is not a joke!