Page 1 of 6 123 ... LastLast
Results 1 to 15 of 79

Thread: Interview with Dr. Alain Moreau, creator of Scoliosis blood test

  1. #1
    Join Date
    Mar 2009
    Location
    Arizona
    Posts
    949

    Interview with Dr. Alain Moreau, creator of Scoliosis blood test

    Dr. Alain Moreau is the director of the The Viscogliosi Molecular Genetics Laboratory of Musculoskeletal Disorders and the developer of the Scoliosis blood test. He was kind enough to share some of his valuable time with me to explain his revolutionary blood test and the latest thinking on Scoliosis. This interview was conducted over e-mail.

    I moved question 19 near the top because it contains information that parents can use to potentially help a child living with Scoliosis. The rest of the interview is in order.

    Part 1

    Question 1) What attracted to you to the field of Scoliosis research?

    Dr. Moreau) I have had a long standing interest in bone diseases. I was trained in bone molecular biology at the Shriner’s Hospital for Children in Montreal, which allowed me to be recruited at Sainte-Justine University Hospital Research Center 10 years ago, to lead a new laboratory dedicated to studying the causes of idiopathic scoliosis.

    Question 2) How long have you studied Scoliosis?

    Dr. Moreau) I have been actively involved in this field since 2000.

    Question 19) Can you offer parents of children with Scoliosis any general recommendations on diet or lifestyle? Is there anything they should do or avoid?

    Dr. Moreau) Right now, it is difficult to make any recommendation without knowing the functional and biochemical status of an asymptomatic child or a scoliotic patient. Having said that, there are a few things that could be considered:

    There is no proven diet to avoid scoliosis. It is true that selenium is a known inhibitor of OPN, but this nutrient can be highly toxic at high doses, especially in children. Moreover, we have experimental evidence that shows that selenium will not work in the majority of IS patients due to their genetic make-up and the fact that we already have enough selenium in our diet in North America.

    Reducing exposure to mycobacteria could be a good way to reduce the risk and I would start by cleaning all shower heads in the house on a monthly basis or even changing them annually since they represent an important source of mycobacteria (Opportunistic pathogens enriched in showerhead biofilms. Feazel LM, et al., Proc Natl Acad Sci U S A. 2009 Sep 22; 106(38): 16393-9. Epub 2009 Sep 14). A second thing to consider is that personally, I would remove the fish tank (aquarium) from the room of my own daughter because mycobacteria are always present in such environments. Again, I would like to stress the point that you won’t catch scoliosis by taking a shower or having a gold-fish in your home! The general idea here is to reduce the exposure to specific environmental factors to decrease risks. In order to do that, we will need to work together with parents and monitor OPN and sCD44 blood levels regularly to identify all potential environmental factors. Some patients will be more sensitive while other will be more resistant to the same environmental factors, so this is a new area of research. Only time will tell if such measures will have positive impacts, but we need to start somewhere.
    Last edited by Dingo; 06-14-2010 at 02:06 PM.

  2. #2
    Join Date
    Mar 2009
    Location
    Arizona
    Posts
    949

    Part 2

    Part 2

    Question 3) Your team in Quebec is developing the world’s first Scoliosis blood test. What can parents expect from this test?

    Dr. Moreau) First of all, I would like to clarify the nature of our scoliosis blood tests since we have developed two distinct and complementary tests.

    Functional scoliosis test: The first test is a functional assay performed with blood cells obtained from 10 ml of blood (equivalent to 2 tea-spoons). As you know, we have previously discovered that many cell types obtained from patients suffering from idiopathic scoliosis (IS) display a differential response in the transmission of melatonin signals. This is possible because melatonin receptors are present in most if not all cell types including blood cells. In other words, the test measures how the cells respond to melatonin. Three distinct responses among IS patients were obtained allowing their classification into three functional subgroups. It should be noted that two distinct methods were performed to determine the functional classification of IS patients, the first using the measurement of cAMP, an intracellular messenger (Moreau et al Spine 2004 & Azeddine et al CORR 2007) and more recently using a more accurate technology called cellular dielectric spectroscopy (Akoume et al Spine 2010), giving both the same functional classification. This functional test has the added advantage of being performed on asymptomatic kids (boys and girls) as well to predict their risks of developing scoliosis. Moreover this functional blood test is also superior because it can be performed without prior knowledge of specifically mutated genes causing IS since we are measuring a function. To better understand the usefulness of this functional assay, I often use the example of how cystic fibrosis (CF) is diagnosed. CF is a monogenic disease, which means that it is caused by mutations in a single gene (CFTR) that plays a role in the transport of chloride ions. Today, there are about 1500 mutations known to affect the function of this gene. CF however, is initially diagnosed using a functional test measuring the level of chloride ions in sweat after provoking perspiration at the surface of the skin. Then, if you are positive for CF and depending on which part of the globe you are from, specific mutations will be tested, since it is not clinically and economically relevant to test for all possible mutations. For instance in Quebec, we would test for the 6 most prevalent mutations for our pediatric population.

    What can a parent expect from this functional test? This functional test is performed only once and it reflects the genetic predisposition or susceptibility of developing scoliosis. It can be performed at any age (although we prefer not to test babies).

    According to the functional subgroup in which the patient is classified, we can determine the following:

    1. A risk-score to establish the susceptibility of developing scoliosis among asymptomatic kids and to predict the risk of disease progression for those at an early stage of the disease. Parents need to keep in mind that this functional test, like any genetic test, cannot assess with 100% certainty if their child will or will not develop scoliosis because the etiology of IS involves a crosstalk with the environment. In other words, kids with a great genetic predisposition (high risk) may develop a severe scoliosis if they are often exposed to specific environmental factors. Inversely, the same kids with a limited environmental exposure could develop a mild scoliosis or none at all.
    2. The risk of developing specific co-morbidities (osteoporosis, anxiety, depression, etc.) which are known to be associated with IS. This aspect is unique to our test and we are in the process of validating whether or not some functional subgroups are more often associated with the risk of developing an early onset of osteoporosis. In that case, knowing a child’s functional subgroup could delay or prevent the development of osteoporosis by increasing his/her bone mass using exercise, diet and medication (which are proven and already available). In the same way, testing scoliotic adults could improve their health outcome and prevent complications simply by knowing which functional subgroup they belong to.
    3. In the long term, this functional classification will be essential for the development of tailored pharmacological treatments (personalised medicine). This will reduce possible side-effects and better define the best treatment for a given patient to stop curve progression and eventually to prevent scoliosis when combined with an early screening using this functional test. We are conducting tests to identify potentially useful therapeutic agents, but parents and patients must be aware that these drugs won’t be tested in clinical trials that soon since we are just now beginning this phase of our research.


    Biochemical scoliosis test: The second scoliosis predictive test is a biochemical one where two proteins called Osteopontin (OPN) and soluble CD44 (sCD44) are measured in the blood. Our clinical data in Montreal, Milan and Hong Kong clearly demonstrated that plasma OPN elevation is associated with IS onset and disease severity since all surgical cases (Cobb angle ≥ 45°) exhibit the highest values when compared to mild scoliosis and healthy control subjects. Conversely, sCD44 is a protective molecule that can prevent OPN from triggering scoliosis or spinal deformity progression by binding free OPN. This explains why IS surgical cases exhibit the lowest sCD44 values when compared to mild scoliosis cases and healthy controls subjects. OPN is not only a biochemical marker, it is the key player causing IS onset and it is responsible for spinal deformity progression. It is true that OPN and sCD44 are not disease-specific but when the observations of the effects of both are combined it does appear they become highly specific for IS. These data will be published in the upcoming months.

    What can a parent expect from this biochemical test? First, this biochemical test must be combined with our functional test to predict the risk of developing scoliosis and spinal deformity progression. Secondly, the biochemical test will be used to monitor at regular intervals the following:

    1. Risk of disease progression over a given period of time since plasma OPN and sCD44 levels are determined by individual genetics as well as by specific environmental factors. This represents the main advantage of this test since it monitors the impact of the environment on IS progression.
    2. Effectiveness of bracing, physical therapy or pharmacotherapy because OPN is the molecule triggering scoliosis onset and inducing spinal deformity progression. Therefore, any treatment decreasing OPN levels is expected to have a beneficial impact.
    3. Measurement of plasma OPN and sCD44 levels will allow contribute to determining the contribution of environmental factors known to trigger high OPN levels. Interestingly, OPN is a multifunctional cytokine that responds to many stimuli such as mycobacterial infections, drugs, diet, exercise, and biomechanical changes. It would be too long to go into detail for each of these factors but there are several papers demonstrating that OPN expression and synthesis can be increased or decreased in response to external factors. This aspect cannot be considered by genetic tests.
    4. Elimination those factors or reducing the exposure to such factors may greatly reduce the risk of spinal deformity progression. For instance, this approach has been proven effective for the treatment of other diseases like asthma. There is no treatment for asthma but drugs are available to treat acute crisis as well as to reduce the number of attacks. However, reducing exposure to allergens (pet, dust, carpet, chemicals, and wooden stoves) has been shown to be very effective in controlling asthma. It is anticipated that regularly monitoring OPN and sCD44 blood levels will help parents and patients to work with us in the identification of those environmental factors.


    Question 4) Do you know when your test will become available?

    Dr. Moreau) This is a good question since I have previously predicted that the tests would be available in 2008-2009 and we are now in 2010! The main reason for this delay is it took us more time than expected to complete the clinical trial in Montreal, and launch clinical trials in Italy (Milan) and Hong Kong (China) to demonstrate the universality of our scoliosis blood tests in different pediatric populations. It is worth mentioning that the biochemical tests performed in Milan and Hong Kong were performed by others and yet still confirmed the validity of our own clinical data in Montreal. I can assure you that we are putting forth our best efforts to put our tests on the market as soon as possible.

    Question 5) Can your tests be used for juveniles as well as adolescents? What about infantile Scoliosis?

    Dr. Moreau) The aforementioned tests were validated in juveniles and adolescents. In regards to infantile scoliosis, we do not know at this point since we did not yet test this form of scoliosis, as infantile scoliosis is such a rare disease in North America. In principle, the tests should work but we need to assess such possibilities in Europe where the cases are more frequent.

  3. #3
    Join Date
    Mar 2009
    Location
    Arizona
    Posts
    949

    Part 3

    Part 3

    Question 6) Can you foresee a day when it will become practical for medical professionals to use your test to screen large populations of children for Scoliosis?

    Dr. Moreau) We already have the capacity using our robotic platform to screen hundreds of samples/patients per day in Montreal. Secondly, our tests have been specifically designed to screen large populations of children. Our partner in Milan (Italy), Dr. Marco Brayda-Bruno has received a first grant from the Italian government for a pilot project to screen 1200 school children for scoliosis using our tests.

    Question 7) How will manufacturers of braces and medical devices use your test to build better products?

    Dr. Moreau) Monitoring plasma OPN and sCD44 levels should be considered as a clinical tool to evaluate bracing efficacy and even treatment compliance. Since both molecules, OPN in particular, are known to be modulated by biomechanical forces, which make our biochemical tests the ideal tool for clinicians and physical therapists to evaluate whether or not bracing and/or physical therapy are really efficient. Secondly, it is anticipated that evaluation of plasma OPN and sCD44 levels in combination with our functional assay will identify scoliotic children for whom a specific brace could represent a better therapeutic option vis-à-vis others. In the same vein, a better selection of patients might improve their health outcome not only by choosing the best brace but by intervening at an earlier stage or by the identification of children having a higher risk of spinal deformity progression for which a minimally invasive surgery with fusionless devices could be a possible option. In addition, better selection of patients might reduce the need to prescribe a brace in a child having a low or non-existing risk of progression, thus reducing the psychological impacts of wearing a brace as well as financial costs to patients.

    Question 8) In 2008 you stated, “We are now, for the first time, in the exceptional position of being able to foresee the eradication of the disease in the very near future with the development of the first drugs within ten years' time.” That’s very exciting! How do you think Scoliosis treatment will evolve over the next 20 years?

    Dr. Moreau) It is anticipated that a new continuum of care will emerge with the arrival of early scoliosis diagnostic/prognostic tests. Prevention will be possible using biochemical assays for periodic monitoring of OPN and sCD44 levels and will increase our awareness of environmental factors exacerbating the risk of developing scoliosis. The discovery of OPN and how it acts to trigger scoliosis onset will surely lead to identifying useful therapeutic agents that can prevent scoliosis or stop its progression over the next 20 years. However, more immediate impacts will probably come from our functional classification of IS patients for the prevention of serious co-morbidities like osteoporosis or depression in some scoliotic patients. One third of IS patients become osteopenic and often develop osteoporosis during their thirties. We believe that our functional test is the only tool that can be used to identify at an early stage those patients at risk of developing osteoporosis and could potentially be used to prevent it or stop its progression using proven nutraceutical and pharmacological therapies available on the market.

    Question 9) In 2004 you published a landmark study (source) that found that children with progressive AIS shared a central nervous system disorder called Melatonin Signalling Dysfunction. In healthy children the presence of Melatonin lowers the level of a molecule called cAMP. In children with MSD this system is broken. Is there evidence that indicates where the physical “break” in the nervous system is located? Is it in the brain, spinal cord or somewhere else?

    Dr. Moreau) We reported in 2004 that melatonin signalling defect (MSD) is caused by an aberrant chemical modification (called phosphorylation) affecting the activity of small proteins called G inhibitory proteins (Gi) through the transfer of phosphate group on serine residues. The alpha subunits of these small Gi proteins are all impaired in IS. The Gi proteins which are normally coupled to melatonin receptors belong to a large family of membranous receptors encompassing about 150 different members normally coupled to Gi proteins while others are coupled to Gs or Gq proteins. This means that all GPCR receptors coupled to Gi proteins are affected in IS and not only those specific to melatonin. Indeed, all tissues exhibiting Gi-coupled receptors are affected by such impairment but we don’t yet know if IS results from a specific tissue, like the nervous system or is the summation of all affected tissues. To answer that question, revisiting animal models will be necessary to specifically inactivate Gi signalling in a tissue specific manner.

    Question 10) Do you know at what age MSD manifests itself? Is it something that children are born with or is it triggered during childhood or even adulthood? Is MSD something the body has the ability to repair?

    Dr. Moreau) It is most likely that children are born with the Gi-signalling defect but its clinical manifestation (disease onset) is induced later, around puberty, because estrogens play a key role in exacerbating such a pre-existing condition. In other words, during infancy, the pool of Gi proteins is so abundant that it is impossible to inactivate all Gi proteins by phosphorylation because the proteins are renewed so quickly. However, it has been reported that estrogens induce a significant decrease in the production of Gi proteins, allowing their full inactivation in IS patients during puberty. This phenomenon can easily be demonstrated in vitro and explains the following: (1) the greater incidence of IS during puberty and (2) why girls are more affected in number and severity than boys. The delay observed in the first menstrual cycle of IS girls may play a rather protective role and should be seen as a compensatory mechanism to protect the body against scoliosis. Unfortunately, the body doesn’t have the ability to correct this signalling defect.

    Question 11) Identical twins are not 100% concordant for Scoliosis (source) (source) (source). Has any research been conducted that tells us if identical twins are 100% concordant for Melatonin Signalling Dysfunction?

    Dr. Moreau) We are in the process of attempting to verify that. More importantly, in families exhibiting several IS cases, we have demonstrated that all affected family members belong to the same functional subgroup indicating that they share the same set of genes predisposing them to scoliosis, independently of their curve pattern or severity. Therefore, it is possible that discordant identical twins will display the same potential (genetic predisposition) but the development of scoliosis in one twin will be triggered by his/her exposure to specific environmental factors. For instance, identical twins do not necessary like the same things: one may prefer sports while the other is more sedentary, and similarly for their diets, with one preferring to eat pasta while the other one fish! Thus, they are experiencing different environments even if they stay under the same roof!

    Question 12) Scientists have produced evidence that heredity plays a role in Scoliosis. However it’s not clear as to what degree genetics are involved. In some diseases like Cystic Fibrosis or Sickle Cell Anemia heredity is the direct cause of the disease. In other diseases like Multiple Sclerosis or Type 1 Diabetes genes play a role but an environmental component is also required. Are there clues that suggest whether MSD is triggered solely by heredity or alternately heredity in combination with an environmental component?

    Dr. Moreau) We have solid evidence that IS is caused by both genetics and the environment. This is why genetic tests won’t work because they cannot simultaneously consider the environment.

    Question 13) According to your patent a protein called Osteopontin is closely associated with curve progression in children with AIS. OPN can be a marker for inflammation (source). Does this suggest that curve progression is induced by a type of chronic inflammation?

    Dr. Moreau) Osteopontin (OPN) is a multifunctional cytokine involved in normal and pathophysiological conditions. We have discovered a new facet of this molecule and I don’t think we should associate curve progression with chronic inflammation.
    Last edited by Dingo; 06-13-2010 at 06:24 PM.

  4. #4
    Join Date
    Mar 2009
    Location
    Arizona
    Posts
    949

    Part 4

    Part 4

    Question 14) When mice don’t produce Osteopontin Scoliosis doesn’t occur. The following quote is from your patent, “OPN-knockout mice do not develop a scoliosis (NS) even if they are in the same genomic background (C57BI6/J)”. What does this tell us about OPN and Scoliosis?

    Dr. Moreau) This experiment indicates that OPN is required to trigger scoliosis onset. It is worth mentioning that bipedal surgeries (amputation of forelimbs) performed on C57Bl6 mice, which are naturally deficient in melatonin synthesis, induce scoliosis through an acute condition (the surgery) resulting in an elevation of OPN levels (since wound healing is a naturally inflammatory process), which cannot be decreased in absence of melatonin because melatonin is a powerful OPN inhibitor. The same phenomenon occurs after a pinealectomy (removal of the pineal gland, which is the main source of melatonin) in chickens. The fact that treatments of pinelactomized animals with pharmacological doses of melatonin prevent scoliosis has nothing to do with a lack of melatonin but is rather associated with the property of melatonin to repress the production of OPN. Having said that, I do not recommend the use of melatonin because (1) melatonin may trigger many side effects including the promotion of dormant tumours and (2) genetic predisposition toward scoliosis may affect how the cells respond to melatonin and so far the results published by my colleague Dr. Machida are not at all convincing about the usefulness of melatonin.

    Question 15) Can Osteopontin stay elevated even after skeletal maturity?

    Dr. Moreau) Osteopontin levels decline in healthy females at around 15 years of age and typically remain low during adulthood. Interestingly, in most of IS patients, OPN levels decline during puberty, which may explain why spinal deformities progressing toward surgery occur only in less than 1% of IS patients. It is also worth mentioning that elevation of OPN has been detected in adult pathologies like cancers (mesothelioma, bone metastases associated with breast or prostate cancers), cardiac conditions, Parkinson’s diseases, etc but the presence of other factors like sCD44 protect these patients against the development of scoliosis.

    Question 16) High levels of Osteopontin are associated with a variety of autoimmune diseases and cancers (source). Does this suggest that children or adults with Scoliosis may have an increased susceptibility to other disease processes?

    Dr. Moreau) It may be premature to make such a claim. However the opposite may be true since scoliosis is a clinical feature (phenotype) often associated with many syndromes and pathological conditions.

    Question 17) Most adolescents with Scoliosis have small curves that don’t progress significantly. Osteopontin is known to increase in the presence of bacterial infections (source). Could some of these small curves be the artifacts of childhood disease?

    Dr. Moreau) As mentioned previously, many factors can stimulate the production of OPN, including some bacterial infections, especially those with mycobacteria. For most healthy individuals exhibiting no genetic predisposition for scoliosis, OPN is a protective cytokine that helps fight, among others, mycobacterial infections. It that case, elevation of OPN won’t trigger scoliosis because other factors like sCD44 are there to counteract the negative effect of OPN on scoliosis. In children having a genetic predisposition for scoliosis, exposure to mycobacteria and other environmental factors could induce scoliosis onset. Having said that, I want to clarify to parents and patients that scoliosis is not an infectious disease!

    Question 18) In 2003 Dr. Vert Mooney, a spine surgeon from California released a study that found that Torso Rotation Strength training was beneficial for children with Scoliosis (source). Since that time two small studies produced similar results (source) (source). Here is a short news video of a young girl doing TRS (news video). Does your research shed any light on why this kind of strength training might be helpful?

    Dr. Moreau) I cannot comment about the validity of these studies because it is difficult to actually demonstrate the degree of effectiveness of any method or device to prevent scoliosis or spinal deformity progression, because the natural history of most IS patients indicates that they are non-progressors. In other words, this method like any other should be challenged by performing clinical trials only with individuals presenting a high risk of progression. Such a selection will be possible using our scoliosis blood tests.
    Last edited by Dingo; 06-13-2010 at 06:12 PM.

  5. #5
    Join Date
    Apr 2009
    Posts
    1,258
    Excellent posting Dingo! My gosh - kind of in awe on this one. Need some more time to go through all this but your efforts to contact Dr. Moreau and prepare such an in depth posting with references, is just - outstanding. Literally. You've set the standard and raised the bar at the same time! Thanks!
    Last edited by mamamax; 06-13-2010 at 08:51 PM.
    Idiopathic, from the Latin meaning: we're idiots 'cause we can't figure out what's causing it (TV Dr. House, MD)

    I'm not weird ... I'm simply - multifactorial

  6. #6
    Join Date
    Mar 2010
    Posts
    2,755
    Very interesting interview.

  7. #7
    Join Date
    Mar 2010
    Posts
    2,004
    I'll finish to read it tomorrow, but great post Dingo!

  8. #8
    Join Date
    Apr 2009
    Posts
    1,258
    With a condition such as scoliosis, looking for the cure seems to also involve looking for a cause that has been around since the beginning of time. We have often wondered about the OPN/bacterial/viral/genetic-familiar predisposition; the possible implications; and the possible cure. The compelling evidence offered by Dr. Moreau, is very exciting and I look forward to what may unfold within my lifetime. I have to say, I went to sleep last night, more hopeful for future generations.

    As an adult - always facing the possibility of progression, I found your question #13 interesting. While Dr. Moreau makes it pretty clear that he does not think, at this time, that inflammation (due to OPN) may be a trigger ... other information found in this interview found me pondering the potential of mild/chronic hidden infections (both viral and bacterial). Interesting that the same virus that can cause measles, can also cause chronic infection, which would in turn cause chronic inflammation. Something to ponder in the adult patient. The implication of what these things relative to those with a genetic/familiar predisposition to scoliosis may hold, remains to be seen in the future. And thanks to Dr. Moreau, the future looks a bit brighter.

    This is all very exciting. Thank you Dingo for stepping up to the plate, and using your best skills to get this information and pass it along to us. I have been wrong to think that there is no hope, or that there has been no active research with any substance. Deepest gratitude.
    Idiopathic, from the Latin meaning: we're idiots 'cause we can't figure out what's causing it (TV Dr. House, MD)

    I'm not weird ... I'm simply - multifactorial

  9. #9
    Join Date
    Mar 2010
    Location
    Ottawa, Canada
    Posts
    21

    Scoliosis blood test

    Is it possible to receive a pdf copy of your information?
    Thank you

  10. #10
    Join Date
    Nov 2009
    Location
    Colorado
    Posts
    390
    I've read this a few times and each time I'm absorbing a little more, not having the science aptitude and all. (I was absent that decade).

    Thanks so much for taking the time and energy to be in touch with this doctor and posting it for all of us. I'm thinking back to a time when I was 11 or 12 and somehow managed to get extremely ill with septicemia blood poisoning from a staff infection which they think started with a scraped knee that I ignored. At the time, my GP thought I had a typical infection but cultured it. She thought the high fever (105.5) and illness were unrelated. My mother gave permission for me to try an experimental antibiotic that was never approved by the FDA. It healed me overnight and later the results came out. Strange story. I've often wondered about that episode and what long term damage it may have caused.

    Plus, we always had fish tanks and turtles, etc. in my room! Sheesh! Used to love to play with the turtles...
    Amy
    58 yrs old, diagnosed at 31, never braced
    Measured T-64, L-65 in 2009
    Measured T-57, L-56 in 2010, different doc
    2 lumbar levels spondylolisthesis
    Exercising to correct

  11. #11
    Join Date
    Mar 2009
    Location
    Arizona
    Posts
    949

    Showerhead

    I'm glad you guys enjoyed the interview. Many thanks go out to Dr. Moreau. His work will make a huge difference in the lives of children around the world. We are lucky to have a brilliant person like Dr. Moreau on our side.

    Speaking of showerheads...

    This is from the NewScientist
    Shower heads make a perfect home for bugs

    His advice is to not use shower heads made of plastic. "If it has little crusty deposits, throw the sucker away. Have a bath."
    I assume metal is superior to plastic because it conducts heat and kills bacteria and other pathogens. As Dr. Moreau said it will take research to determine if exposure to harmful bacteria can trigger curve progression. However using a clean showerhead is an inexpensive, healthy decision that could probably benefit almost everyone. I checked and my shower has a very old... very plastic showerhead.

    Here is some information about Mycobacterium

    Wiki: Mycobacterium

    Mycobacteria are widespread organisms, typically living in water (including tap water treated with chlorine) and food sources. Some, however, including the tuberculosis and the leprosy organisms, appear to be obligate parasites and are not found as free-living members of the genus.
    Because Mycobacterium enjoy moist environments I guess it's also time to examine how we store toothbrushes at our home.
    Last edited by Dingo; 06-14-2010 at 04:13 PM.

  12. #12
    Join Date
    Apr 2009
    Posts
    1,258
    Seems logical Dingo ... I'm sitting here wondering if I should have the tap water checked!

    Honestly, Moreau's work is just too exciting! Here's an excerpt from a story in the AAOS Journal:

    We are also working on pharmacologic treatments to prevent or slow the progression of the disease, which could have an enormous impact. One day, we may be able to identify children who are at risk or still asymptomatic and be able to give them the correct treatment at the correct moment. I anticipate that in the early stages, patients will have customized pharmacotherapy, in conjunction with other treatments, to prevent and eventually reverse scoliosis
    .
    One of those things that makes you feel like you are watching history unfold :-)
    Idiopathic, from the Latin meaning: we're idiots 'cause we can't figure out what's causing it (TV Dr. House, MD)

    I'm not weird ... I'm simply - multifactorial

  13. #13
    Join Date
    Jan 2010
    Location
    San Bruno, CA
    Posts
    271
    Dingo, have you come across any smaller articles that have done what the clinical trials are attempting to do, i.e. test for OPN in a random group of adolescents and 'predict' which ones will develop scoliosis?

    I found the recent 2010 article on melatonin signaling dysfunction. But can't find anything directly related to OPN.

    As I've mentioned before, I remain optimistically skeptical about this. My skepticism is not alleviated by the apparent lack of published data, despite the time and the data available. His patent application, originally submitted in 2007, has a cohort of 252 consecutive AIS patients, 35 healthy controls and 70 'at risk' subjects and OPN, sCD44 and hyaluorinc acid are measured. OPN values are elevated in the AIS group although the standard deviations are quite large. The differences do reach significance compared to the healthy controls. This is certainly enough data and enough time has passed since then to have a good chunk of follow-up. Does he have plans to publish this soon? I'm unfamiliar with how the patent process works.

    I'm to the point where I'm tired of seeing all of these hints at this great 'eureka' moment for AIS coming from this line of research. Let's see it already!

    At any rate... Great questions and his answers are interesting to read and process.

  14. #14
    Join Date
    Mar 2009
    Location
    Arizona
    Posts
    949

    OPN and Scoliosis

    Skevimc

    I can't wait to see the data too although I'm not necessarily qualified to evaulate it. Previous to the patent I was not aware that OPN was connected to Scoliosis. I always thought that Dr. Moreau was investigating Calmodulin because there is so much interest in that area. I haven't seen a study on OPN and Scoliosis, but I don't see everything so it could be out there.

    In Part 2 of Moreau's interview he wrote that he was about to publish his data on OPN, CD44 and Scoliosis.

    These data will be published in the upcoming months.

  15. #15
    Join Date
    Mar 2009
    Location
    Arizona
    Posts
    949

    functional subgroups

    In Dr. Moreau's answer to question 11 he wrote this.

    ...in families exhibiting several IS cases, we have demonstrated that all affected family members belong to the same functional subgroup indicating that they share the same set of genes predisposing them to scoliosis, independently of their curve pattern or severity.
    What he's talking about are the 3 types of Melatonin Signalling Dysfunction.

    If you look at page 5 of his 2004 study on Melatonin Signalling Dysfunction you'll see a chart at the top. The chart shows how cAMP responds to increasing amounts of Melatonin. The bottom line represents the healthy control group. The other 3 lines represent the 3 subgroups or types of Melatonin Signalling Dysfunction.

    In healthy children cAMP plummets as the level of Melatonin increases. In subgroups 2 and 3 cAMP goes down but nearly as much as it should. In subgroup 1 (the dark black line) cAMP actually goes up in the presence of Melatonin.

    I don't know which subgroup has the highest risk of curve progression but I have to imagine it's group 1. The nervous system appears work almost in reverse for this group.

    I should add one thing...

    Dr. Moreau's evidence suggests that a child's nervous system will break in a particular way depending on what genes she has. However it doesn't mean that heredity breaks the nervous system. I asked him if identical twins were 100% concordant for MSD and he responded.

    We are in the process of attempting to verify that.
    That's an answer that I'm looking forward too. My guess based on studies like this (source) is that twins won't be 100% concordant. Future studies will show that in most cases an environmental component is required to trigger MSD just as an environmental component is required to trigger Multiple Sclerosis and so many other diseases. Time will tell but that's my strong suspicion.
    Last edited by Dingo; 06-15-2010 at 10:08 AM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •