possible biostasis with rooibos tea?

rjk3 rjk3 at my-deja.com
Fri Jan 28 15:04:47 EST 2000


In article <MPG.12fa292d9a0d631298973c at news.onlynews.com>,
  Randall Parker <rgparker at west.net> wrote:
> Doug,
>
> Simple dumb question: Is rooibos tea something that is sold in
stores? I
> never heard of it.
>
> I do like the CNS protection report though.
>

And I wonder who sponsored the study.  A search on google turned up 603
web sites.  Here's one with a little history:

http://www.wimall.com/friend/indexwf.html

The plant is native to South Africa.

You can order it on line at:

http://www.savannahimports.com/tea.htm

It probably is beneficial, but I doubt if it's anything very dramatic.


> In <86ic5b$pu4$2 at sylvester.vcn.bc.ca>, the exalted oberon at vcn.bc.ca
Doug
> Skrecky opined:
> > Subject: possible biostasis with rooibos tea?
> > From: Doug Skrecky <oberon at vcn.bc.ca>
> > Newsgroups: sci.life-extension, bionet.molbio.ageing
> >
> > Citations: 1-2
> > <1>
> > Authors
> >   Lamosova D.  Jurani M.  Greksak M.  Nakano M.  Vanekova M.
> > Institution
> >   Institute of Animal Biochemistry and Genetics, Slovak Academy of
Sciences,
> >   Ivanka pri Dunaji, Slovakia. LAMOSOVA at UBGZ.SAVBA.SK
> > Title
> >   Effect of Rooibos tea (Aspalathus linearis) on chick
> >   skeletal muscle cell growth in culture.
> > Source
> >   Comparative Biochemistry & Physiology. Part C Pharmacology,
Toxicology,
> >   Endocrinology.  116(1):39-45, 1997 Jan.
> > Abstract
> >   Rooibos tea (RT) extract contains natural antioxidants and
> >   scavenging agents. We investigated the effects of different
concentrations of
> >   RT extract in medium on growth and changes of growth parameters
of cultured
> >   chick embryonic skeletal muscle cells. Presence of 2, 10 and 100%
of RT
> >   extract in the culture of primary cells significantly inhibited
cell
> >   proliferation. The inhibition of cell growth reflected on
decreased DNA, RNA
> >   and protein contents in primary cell culture and fibroblasts and
myoblasts.
> >   The ability of the primary cells, fibroblasts and myoblasts to
synthesize DNA
> >   and protein in the presence of RT extract, measured as an amount
of
> >   [3H]thymidine and [3H]leucine incorporated into DNA and de novo
synthesized
> >   protein, corresponded with decreasing DNA and protein contents in
all three
> >   cell types. The inhibition effect of RT rose with increasing
concentration of
> >   the tea extract in the culture medium. Ornithine decarboxylase
activity was
> >   significantly affected only by 100% RT extract in every examined
cell types.
> >   These results suggest that the inhibitory effect of RT extract on
the growth
> >   of primary cells, fibroblasts and myoblasts is due to the potent
scavenging
> >   activity of the RT extract.
> >
> > <2>
> > Authors
> >   Inanami O.  Asanuma T.  Inukai N.  Jin T.  Shimokawa S.  Kasai
N.  Nakano M.
> >   Sato F.  Kuwabara M.
> > Institution
> >   Faculty of Agriculture, Iwate University, Morioka, Japan.
> > Title
> >   The suppression of age-related accumulation of lipid peroxides in
rat brain
> >   by administration of Rooibos tea (Aspalathus linearis).
> > Source
> >   Neuroscience Letters.  196(1-2):85-8, 1995 Aug 18.
> > Abstract
> >   The protective effects of Rooibos tea (RT), Aspalathus
> >   linearis, against damage to the central nervous system (CNS)
accompanying
> >   aging were examined by both the thiobarbituric acid reaction
(TBA) and
> >   magnetic resonance imaging (MRI) methods in brains of chronically
RT-treated
> >   rats. Ad libitum administration of RT was begun with 3-month-old
Wistar
> >   female rats and continued for 21 months. The contents of TBA
reactive
> >   substances (TBARS) in the frontal cortex, occipital cortex,
hippocampus and
> >   cerebellum in 24-month-old rats after administration with water
were
> >   significantly higher than those in young rats (5 weeks old).
However, no
> >   significant increase of TBARS was observed in RT-administered
aged rats. When
> >   MR images of the brains of 24-month-old rats with and without RT
as well as
> >   5-week-old rats were taken, a decrease of the signal intensity
was observed
> >   in the cerebral cortex, hippocampus and cerebellum in MR images
of aged rats
> >   without RT, whereas little change of the signal intensity was
observed in MR
> >   images of the same regions of 24-month-old rats treated with RT,
whose images
> >   were similar to those of young rats. These observations suggested
that (1)
> >   the age-related accumulation of lipid peroxides in the brain was
closely
> >   related to the morphological changes observed by MRI, and (2)
chronic
> >   RT-administration prevented age-related accumulation of lipid
peroxides in
> >   several regions of rat brain.
> >
> >
> >
>


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