THE STEM-CELL CONNECTION
The Influence of
Various Alternative and Adjunct Therapies on Stem-Cell Expression |
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LAURANCE JOHNSTON, PH.D. |
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Only recently emerging on our healing horizon,
experts predict that stem cells will become the body’s therapeutic miracle
workers, regenerating tissues and organs damaged by disease, trauma, or
aging. Once thought to be relatively rare or present only in unique
tissues, these cells have a ubiquitous presence and regenerative role
throughout the body, and may represent a common-denominator mechanism by
which many therapies mediate their healing effects.
Because pulling together seemingly disparate pieces
of the puzzle catalyzes progress, this article discusses the influence of
various previously discussed therapies on stem-cell expression.
Conceivably, some could augment the effectiveness of the many stem-cell
programs emerging throughout the world.
STEM-CELL PRIMER
Stem-cell biology is still a complicated, poorly
understood area. Briefly, stem cells are precursor or progenitor cells
that have the potential to transform into
a wide variety of tissue. Although often dichotomously categorized as
either embryonic or adult, they actually represent a continuum of cell
types that can transform into our end-product tissue.
For example, as our central nervous system (CNS)
develops, embryonic stem cells evolve into more specialized adult
neural stem cells. In turn, these adult cells can differentiate into
neuron- or glial-restricted precursor cells, the former with the
potential to transform into neurons and the latter into support cells
called oligodendrocytes and astrocytes.
Omnipotent embryonic stem cells have the greatest
potential to differentiate into a wide range of cell types, although
it has been difficult to steer them in the desired direction. Adult
stem cells are found in most tissues, including, for example, CNS,
bone marrow, skin, intestine, liver, muscle, hair follicles, and even
teeth. Sometimes, they are robustly expressed, such as the
bone-marrow’s ongoing production of blood-cell-replenishing stem
cells; in other tissue, they are quiescent and need to be coaxed into
action.
Although adult stem cells usually differentiate
into the specialized cells connected with the originating tissue, when
certain cues are provided, they can transform into cells associated
with other tissue. For example, under appropriate circumstances,
bone-marrow-derived stem cells can differentiate into nerve cells and,
indeed, are being used in several SCI-transplantation programs.
Furthermore, studies suggest that adult stem cells can reprogram back
into a more embryonic state. Finally, although we have emphasized
their therapeutic potential, given the wrong cues, stem cells can turn
into physiological troublemakers, causing, for example, cancer. |
Spinal Cord Injury (SCI)
It is astonishing to see the many function-restoring,
stem-cell transplantation programs emerging
worldwide, ranging from those with reasonably strong scientific
foundations to questionable, profit-motivated endeavors. In spite of
poorly understood risks and benefits, the influence of these programs will
continue to grow in the SCI global community.
Stem-cell transplantation procedures and results vary
substantially between programs. Cells from numerous sources (e.g., blood,
bone marrow, olfactory tissue, fetal tissue, etc) have been transplanted
via several routes, including into the spinal cord or fluid,
intravenously, or intramuscularly. Donor cells are not selected based on
the theoretical best source or regenerative potential but their isolation
ease, such as concentrating blood stem cells. Likewise, it’s a lot easier
and safer but perhaps not as effective to inject cells into a muscle,
blood, or spinal fluid than surgically accessing the spinal cord.
In addition, endogenous stem cells may play a healing
role in acute injury. For example, Drs. Charles Tator and A.J. Mothe
(Toronto, Ontario, Canada) have carried out studies in rats suggesting
that that injury itself mobilizes dormant spinal-cord stem-cells into
action. Perhaps, some of the therapies discussed below could amplify this
healing response.
Acupuncture
Traditional Chinese Medicine believes that a
life-force energy qi permeates all living things through meridian
channels punctuated by acupuncture points. Stimulating these points
promotes health- and regeneration-enhancing qi flow.
Scientists have shown that acupuncture influences
neuronal stem-cell expression in several animal models of neurological
disorders. Because of such suggestive studies, as well as others
indicating that acupuncture can restore some function in both acute and
chronic human SCI, acupuncture has been incorporated into a number of SCI
stem-cell programs.
According to Harvard University’s Dr. Charles Shang,
the acupuncture system and stem cells are closely linked through an
“organizing center network” composed of under-differentiated,
electromagnetically sensitive cells. Confirmed by published studies, this
network is created early in embryogenesis before the formation of other
body systems (e.g., spinal cord) and has the potential to influence these
later-formed systems throughout life. Under this model, acupuncture has
extensive growth-control effects and can trigger network stem cells into
action.
As a crude analogy, view the acupuncture-sensitive
“organizing center network” as a behind-the-lines’ general ready to send
in “green” reserve troops (i.e., stem cells) who will evolve into the
front-line combatants replacing those who have fallen from the attacks of
disease, trauma, and aging. In the case of transplanted stem cells,
Shang speculates that they can be recruited into a new network for repair
and regeneration.
Laser
Evidence indicates that laser therapy promotes
functional recovery after SCI. For example, Dr. Kimberly Byrnes et al
(Washington, DC) demonstrated that laser energy
alters gene expression in rats
with SCI and in cells being transplanted into the injured cord (insert
link). Dr. Semion Rochkind (Israel) also has
shown that functional recovery in rats with SCI was maximized when
embryonic cell transplantation was followed with laser irradiation.
This research is
particularly relevant because individuals with SCI have attempted to
maximize restored function after stem-cell transplantation using
laser-based therapy, especially with the
Laserpuncture program developed by France’s Albert Bohbot (http://www.laserpuncture.eu).
Dr. Emilio Jacques (Mexico) has also used laser and acupuncture
therapy after transplanting stem cells into the injury site.
Hyperbaric Oxygen
With hyperbaric oxygen (HBO) therapy, patients are
put in chambers pressurized at 2-3 atmospheres containing up to 100%
oxygen. Studies suggest that HBO is beneficial for treating a variety of
neurological disorders in which blood-flow-related oxygenation is
compromised, including acute and perhaps chronic SCI. The premise is that
HBO will force oxygen into injured oxygen-deprived CNS tissue. Dr. Stephen
Thom et al (Philadelphia, PA) has shown that HBO stimulates the
bone-marrow production of stem cells. Specifically, stem cells doubled in
the circulation of humans after a single two-hour, two-atmosphere HBO
session, and after 20 treatments, increased eight-fold.
Herbal Medicine
Studies have shown certain common herbal supplements
stimulate stem-cell proliferation. For example, consuming blue-green algae
increases the number of stem cells released from the bone marrow into the
blood by 25-30% for several hours, and ginseng stimulates proliferation of
brain stem cells involved in memory.
Omental Surgery
Dr. Harry Goldsmith (Reno, Nevada) has developed
surgical procedures for various CNS disorders that use the omentum, a
physiologically dynamic tissue that hangs like an apron over the
intestines and lower abdomen area. For SCI, the omentum is surgically
tailored to create a pedicle of sufficient length and intact circulation
so it can be attached to the cord’s injury site (like cutting a square
handkerchief into a long necktie). Dr. Ignacio García-Gómez et al (Madrid,
Spain) have shown that human omentum contains stem cells, which synthesize
key, blood-flow-enhancing growth factors when transplanted.
Electromagnetic Fields (EMF)
EMF reduces neurological damage after acute SCI. For
example, Dr. Wise Young (Piscataway, NJ)
reported that the majority of EMF-treated
cats with SCI were walking four months after injury compared to none in
the control group. Pilot studies (Poland) suggested that
EMF greatly improved neurological outcomes
in patients with acute SCI. Based on these possibilities, several
patients who have had stem-cell-containing tissue implanted into their
injured cord followed the procedure with EMF therapy.
Because numerous studies
indicate EMF influences stem-cell proliferation, including neuronal stem
cells, EMF-associated regenerative effects may be partially mediated
through such cells. Some speculate that EMF could be the much-needed
physiological steering wheel that directs the difficult-to-control,
theoretically powerful embryonic stem cells
to the desired terminal destination.
Inert-Gas
A little-known therapy,
inert-gas treatment builds up the
electromagnetic energy fields possessed by all living things, thereby
enhancing regenerative potential. Because transplantable stem-cells are
living and possess energy fields, some suggest that exposing them to
inert-gas energy while in culture will beef-up their physiological
robustness and viability before transplantation.
Psychoneuroimmunology
Psychoneuroimmunology is a highfalutin scientific term to describe how our
emotions, attitudes, and consciousness influence health. Speculatively,
one mechanism may involve stem cells. For example, as discussed in The
Biology of Belief (2005), membrane biochemist Dr. Bruce Lipton states
that our emotions affect the electromagnetic fields we internally
generate, which modulates the structure of proteins embedded in our cell
membranes. In turn, these modulations affect gene or DNA expression that
determines cell role and fate. If external EMF can stimulate neuronal
stem-cell expression, theoretically, consciousness-generated fields can do
so also.
Conclusion
Many therapeutic
modalities in our healing spectrum can synergistically work together to
enhance health if we are open-minded enough to consider the possibilities.
If, for example, the world’s most ancient healing tradition, acupuncture,
can influence the most state-of-the-art therapy (i.e., stem cells), we
should pay attention, or the promising therapeutic potential of this
emerging technology may be compromised.
Although we only
have a tip-of-the-iceberg understanding of them, stem cells will play an
ever-growing role in our efforts to restore function after SCI. As our
knowledge increases, ideally, we will be able to take advantage of various
adjunct therapies to maximize the healing potential of both transplanted
stem cells and those endogenously produced from within. From conception
until death, they are the cells of renewal and regeneration through which
our healing energies are mediated.
SAMPLE SCI
CELL-TRANSPLANTATION PROGRAMS THROUGHOUT THE WORLD
Europe:
1)
Carlos Lima (Portugal), stem-cell-containing
olfactory tissue;
2)
Andrey Bryukhovetskiy
(Russia), hematopoietic (i.e., blood) stem
cells;
3)
Samuil Rabinovich (Russia), fetal
olfactory ensheathing cells (OECs), nerve, and hematopoietic tissues;
4)
Eva Sykova (Czech Republic) bone-marrow
stem cells;
5)
Venceslav Bussarsky, (Bulgaria),
bone-marrow stem cells;
6)
Advanced Cell Therapeutics (Switzerland),
umbilical stem cells;
7)
Cornelis Kleinbloesem (Netherlands &
Turkey), bone-marrow stem cells.
Asia:
1)
K-S Kang (South Korea), umbilical stem
cells;
2)
Yoon Ha (South Korea), bone-marrow stem
cells;
3)
Yongfu Zhang (China), bone-marrow stem
cells;
4)
Hongyun Huang (China),
fetal OECs;
5)
Beike Biotechnology
(China), umbilical stem cells;
6)
Tiansheng Sun (China), OECs;
7)
Hui Zhu (China), fetal Schwann cells
8)
Masoumeh Firouzi, Schwann Cells
9)
Geeta Shroff (India), human embryonic
stem cells;
10)
Satish Totey (India), bone-marrow stem
cells;
Australia:
1)
Alan MacKay-Sim (Australia), OECs;
South America & Mexico:
1)
Tarcisio Barros (Brazil), hematopoietic
stem cells;
2)
Gustavo Moviglia (Argentina), bone-marrow
stem cells;
3)
Fernando Ramirez (Mexico),
blue-shark, embryonic neuronal cells;
4)
Emilio Jacques (Mexico), umbilical stem
cells.
United States & Canada:
1)
Diacrin Corporation (USA), fetal pig
cells (defunct); |
Adapted from article appearing in October 2006 Paraplegia News (For subscriptions,
call 602-224-0500) or go to
www.pn-magazine.com.
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