Subj: Soy Products A Significant Health
Risk
Date: 11/27/1999
11.27.99
Soy Products A Significant Health Risk
An unfortunate bit of news from Ian Goddard. Evidence shows that soy food
products are notably unhealthy in some crucial ways.
Subject: SOY WARNING!
Date: Sat, 27 Nov 1999
From: Ian Goddard
SOYBEANS LINKED TO BRAIN ATROPHY AND CELL DEATH
As a vegetarian, I present the following with great regret. Soy products
like tofu have provided the staple alternative to eating murdered animals.
Unfortunately the study reported here:
http://starbulletin.com/1999/11/19/news/story4.html
has found a significant link between eating tofu and brain aging
and atrophy! My first reaction was to hope that the
study was flawed. Unfortunately, a quick study of published research at the
National Library of Medicine indicates that there is a STRONG physiological
basis for the findings in that study. It seems that a main phytochemical
in soybeans, genistein, reduces DNA synthesis in the brain, and reduced DNA
synthesis promotes apoptosis, which is also known as "programmed cell death."
Multiple studies I found indicate that drug-induced reduction of DNA synthesis
is routinely associated with reduced cell proliferation and death. DNA synthesis
is a critical part of the life cycle of a cell:
It appears that the ability of genistein to reduce DNA synthesis may be why
it is a promising anti-cancer agent, for research suggests genistein can
kill cancer cells and other drugs that reduce DNA synthesis kill cancer cells.
Unfortunately, genistein's cytotoxic properties appear to be nonspecific,
ie, it doesn't only kill cancer cells. In the first abstract below, it was
found that genistein "induced significant testicular cell death." Ouch! The
second study finds that genistein reduced DNA synthesis in the brain. To
get the full picture of what I've stated here, I recommend using the National
Library of Medicine's search engine:
http://www.ncbi.nlm.nih.gov/PubMed
It is easily the most powerful tool on the Internet, accessing most of
the published medical research since around 1965.
Too much tofu induces ‘brain aging,’ study shows:
http://starbulletin.com/1999/11/19/news/story4.html
6-6-08
Here is a product that may help with this problem: Indole 3
Carbinol Indole-3-carbinol (C9H9NO) is produced by the
breakdown of the glucosinolate glucobrassicin en.wikipedia.org/wiki/Indole-3-carbinol
studies also show that this product prevents cancer
which can be found at relatively
high levels in cruciferous vegetables ...
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Soy-phytochemical genistein "induced significant testicular cell death."
Biol Cell 1999 Sep;91(7):515-23
Cytotoxic potential of the phytochemical genistein isoflavone
(4',5',7-trihydroxyisoflavone)
and certain environmental chemical compounds
on testicular cells.
Kumi-Diaka J, Nguyen V, Butler A
Florida Atlantic University, Department of Biology,
College of Liberal Arts & Sciences, Davie 33314, USA.
[Medline record in process]
The effects of genistein (Gn), sodium azide (naz), and dexamethasone (dxm)
on testicular cells TM3, TM4 and GC-1 spg were studied in vitro. First, a
series of experiments were performed to assess the response of the cells
to the exposure of Gn, naz, dxm, a combination of Gn with naz and Gn with
dxm. Trypan blue exclusion assay was used to determine the percentage of
viability, and LDH-cytotoxicity test was used to assess the degree of
treatment-induced cytotoxicity on each cell type. A second series of experiments
were performed to study cytomorphology and determine the type and percentage
of treatment-induced cell death (apoptosis and necrosis) on each cell line,
using fluorescent dye technique to detect apoptotic and necrotic cells, and
tunnel assay to confirm apoptosis. The results from the data obtained
demonstrated:
i) that incubation of testis cells with each of the agents (Gn, dxm, naz) alone and in two combinations (Gn-dxm, and Gn-naz) induced significant testicular cell death;
ii) that both genistein and dexamethasone mostly and significantly induced apoptotic cell death while sodium azide induced necrotic cell death;
iii) that addition of dexamethasone to genistein demonstrated synergism in apoptosis on testis cells; and
iv) that combination of naz with Gn demonstrated synergism
in necrosis on testis cells even though Gn alone did not induce significant
necrosis. It is concluded that the synergistic actions of genistein and dxm,
and of genistein + sodium azide in induction of apoptosis and/or necrosis
may be of clinical and pathophysiological research interest considering the
chemopreventive and chemotherapeutic potential of genistein; and the
clinico-pharmacological application of dexamethasone and sodium azide.
http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=10572627&form=6&db=m&Dopt=b
===============================================================
"Genistein decreased the DNA synthesis within less than 30 min."
Exp Neurol 1999 Sep;159(1):164-76
Early effects of protein kinase modulators on DNA synthesis in rat cerebral
cortex.
Yakisich JS, Siden A, Vargas VI, Eneroth P, Cruz M
Applied Biochemistry, Clinical Research Center, Karolinska
Institute, Novum, Huddinge University Hospital, Huddinge,
S-141 86, Sweden.
By using tissue miniunits, protein kinase modulators, and topoisomerase
inhibitors in short-term incubation (0-90 min) we studied (1) the role of
protein phosphorylation in the
immediate control of DNA replication in the developing rat cerebral cortex
and (2) the mechanism of action for genistein-mediated DNA synthesis inhibition.
Genistein decreased the DNA synthesis within less than 30 min. None of the
other protein kinase inhibitors examined (herbimycin A, staurosporine,
calphostin-C) or the protein phosphatase inhibitor sodium orthovanadate inhibited
DNA synthesis and they did not affect the genistein-mediated inhibition.
The selective topoisomerase inhibitors camptothecin and etoposide decreased
the DNA synthesis to an extent similar to that of genistein and within less
than 30 min. In addition, the effects of these substances on topoisomerase
I and II were studied. Etoposide and genistein but not herbimycin A,
staurosporine, or calphostin-C strongly inhibited the activity of topoisomerase
II. Our results
(1) strongly suggest that the net rate of DNA replication during the S phase of the cell cycle is independent of protein phosphorylation and
(2) indicate that the early inhibitory effect of genistein
on DNA synthesis is mediated by
topoisomerase II inhibition rather than protein tyrosine kinase inhibition.
Copyright 1999
Academic Press.
http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=10486185&form=6&db=m
&Dopt=b
============================================================
Reduce DNA synthesis associated with aging
Acta Neuropathol (Berl) 1999 Jan;97(1):71-81
Age-related changes of DNA repair and mitochondrial
DNA synthesis in the mouse brain.
Schmitz C, Axmacher B, Zunker U, Korr H
Department of Anatomy and Cell Biology, RWTH University of Aachen, Germany.
cschmitz@alpha.imib.rwth-aachen,de
Using quantitative autoradiography, both nuclear DNA repair - measured
as nuclear unscheduled DNA synthesis (UDS) - and mitochondrial (mt) DNA synthesis
were
evaluated in situ for several types of cells in the brains of untreated mice
of various age. It was found that distinct types of neuronal cells showed
a decline of both UDS and mtDNA synthesis with age, whereas - except for
glial cells of the cerebral cortex - no glial or endothelial cells showed
age-related alterations of UDS. Together with various data reported in the
literature, these patterns of a cell type-specific decrease of UDS and mtDNA
synthesis with age in the mouse brain lead to an improved understanding of
the complex interrelationships between the molecular events associated with
the phenomenon of aging as well as to a new idea regarding the cause of the
specific distribution pattern of those cells in the human brain that are
affected by the formation of paired helical filaments in Alzheimer's disease.
http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=9930897&form=6&db=m&
Dopt=b
=========================================================
To get the full picture of what I stated above, I recommend using the National
Library of Medicine's search engine:
http://www.ncbi.nlm.nih.gov/PubMed
The key words you choose make all the difference!
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GODDARD'S JOURNAL:
http://www.erols.com/igoddard/journal.htm
____________________________________________________________
Date:
June 11, 2007 at 04:13:59 From: AboveClouds Subject: Genetically Modified Organisms |
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