Nerve regenerating substances?
paul.michaelson at worldnet.att.net
Fri Aug 1 18:30:08 EST 1997
yanndug at microtecREMOVETOREPLY.net (Yann Duguay) wrote:
>Nerve regenerating substances?
>Could anyone please indicate to me what are the substances (vitamins, food
>supplements, etc.) that are currently known to help in regenerating
>A simple list, a study, a URL, or anything would be welcomed.
I corrected the formatting of the file on this that I posted
yesterday, and will repost it below.
Note that there are at least two supplements that might help nerve
regeneration. They are octacosanol and trimethylglycine (TMG). TMG is
converted to SAMe when taken by humans, and SAMe is what may help
Subject: New Variations On Old Drugs Promote Nerve Regeneration
From: cowboy <cowboy at NMDAIBM.NMSU.EDU>
Date: Sun, 27 Jul 1997 19:40:51 -0700
Institution: Johns Hopkins Medical Institutions
Contact: Beth Palevich, Public Information Officer
E-mail: bpalevic at welchlink.welch.jhu.edu
New Variations On Old Drugs Promote Nerve Regeneration
Researchers at Johns Hopkins and Guilford Pharmaceuticals Inc., have
successfully modified a group of established drugs to stimulate nerve
growth without suppressing the immune system.
The researchers say the development is a critical step toward using
the new compounds as treatments for a wide range of neurodegenerative
diseases like Parkinson's disease or multiple sclerosis, or brain
injuries from stroke or head trauma. "We showed that these compounds
can cause recovery of functions and behaviors previously lost to nerve
damage in lab animals," says Solomon Snyder, M.D., Hopkins director of
neuroscience and principal author on the paper, which appears in this
month's Nature Medicine. "We believe this is the first demonstration
through an orally administered treatment of a significant [missing
word] by regenerative effect on nervecells without suppression of the
immune system." Immunosuppressive drugs like cyclosporin A
and rapamycin were originally developed to prevent a patient's immune
system from rejecting an organ transplant. When researchers looked for
the compounds immunosuppressive drugs bind to in the body, they found
a group of proteins called immunophilins. "These are proteins
frequently used by the cell for what we call signal transduction,"
explains Snyder. "They bind to something outside the cell, and as a
result of that binding cause changes inside the cell--make it less
likely that an immune cell will proliferate, for example." Hopkins
scientists discovered that brain cells have 10 to 50 times more
immunophilins than immune cells and that immunophilins in the brain
are linked to a variety of important nerve cell functions, including
the ability to regenerate lost branches of the cell and generate new
branches. Immunosuppressive drugs bind to immunophilins; together,
the two interact with a protein called calcineurin to suppress the
immune system. Researchers at Hopkins and Guilford, using new
techniques from molecular biology and a field called combinatorial
chemistry, attached chemical structures to the drugs that prevented
them from binding to calcineurin but did not affect their ability to
attach to immunophilins. Scientists at Hopkins and Guilford put the
new drugs to the test alongside the original immunosuppressive drugs,
first in studies of chicken nerve cells in the lab, and later in rats
whose sciatic nerve had been crushed. There was no significant
difference in the new drugs' ability to stimulate growth of new nerve
cells and cause regeneration of lost branches. "The new drugs
were even able to regenerate the protective myelin sheath surrounding
the branch, which is critical to recovery of function," says Snyder.
Representatives from Guilford hope to begin clinical trials of some of
the new drugs in a year or more.
Guilford is a private biopharmaceutical company based in Baltimore.
Under an agreement between Johns Hopkins University and Guilford,
Snyder and Ted Dawson, M.D., Ph.D., another Hopkins author on the
Nature Medicine paper, are entitled to a share of royalties received
by the University from Guilford. The University owns stock in
Guilford, with Snyder and Dawson having an interest in the University
share under University policy. Snyder serves on the Board of Directors
and the Advisory Board of Guilford, is a consultant to the company,
and owns additional equity in Guilford. This arrangement is being
managed by the Johns Hopkins University in accordance with its
conflict of interest policies. Other authors on the Nature Medicine
paper were Joseph Steiner, Maureen Connolly, Greg Hamilton and Heather
Valentine, of Guilford; and, Ted Dawson, and Lynda Hester of Hopkins.
The studies were funded by Guilford and the National Institutes of
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