Showing posts with label PBSC. Show all posts
Showing posts with label PBSC. Show all posts

Wednesday, July 22, 2009

A cure for Type 1 Diabetes - with Peripheral Blood Stem Cells

While researchers battle it out trying to prove the supremacy of various stem cell types (embryonic, mesenchymal etc.), it is worth remembering that so far, blood derived stem cells have been used for a great variety of cures (if you know of any human that has been actually cured with an embryonic stem cell, please let us know).

During my nocturnal, pre-bedtime web surfing (I suspect that I'm not the only one with this habit...), I came across a video describing the way blood stem cells* obtained from the same patient was used to provide a successful treatment for patients with recently diagnosed type 1 diabetes. This work isn't that new -I blogged about it back in 2007- but it is a very significant milestone in the history of stem cell transplantation.

Dr. Richard Burt's work is really quite demonstrative of how our blood and immune system plays a very significant role in whether our tissues and organs break down- and where stem cells obtained non-invasively from the same patient's own blood stream- have a clear role to play. I have yet to meet Dr. Burt in person but know him through his work and this video is the first I've seen of him providing a very clear insight into the trial that he is conducting. He highlights that 14 out of 15 patients were successful in treatment and this is an excellent base number to build on for the next clinical trial.

Dr. Burt published his work in the well renown and respected Journal of American Medical Assocation (JAMA), but instead of reading it I thought this video version sums it up really nicely for the non-medical and patient community.



If watching the video makes you more interested in reading the journal article, click on this link Autologous Nonmyeloablative Hematopoietic Stem Cell Transplantation in Newly Diagnosed Type 1 Diabetes Mellitus.


*StemLife offers individuals the opportunity to bank their babies' cord blood or stem cells from adult blood for therapeutic use.

Thursday, March 19, 2009

Autologous-OWN-Stem Cell Infusion And Hyperbaric Oxygen Treatment Improve Islet Function In Diabetes

A study to determine if patients with type 2 diabetes can benefit from a combination of autologous (patient OWN self-donated) stem cell infusions (ASC) and hyperbaric (above the normal air pressure of ) oxygen treatment (HBO) before and after ASC has found "significant benefits" in terms of "improvements in glycemic control" along with "reduced insulin requirements."

The combination therapy could decrease type 2 diabetes morbidity and mortality, said the authors, who published their study results in a recent issue of Cell Transplantation (Vol. 17 No.12).

"Autologous stem cell therapies are an emerging set of therapies with promising results and low side effects profiles," said corresponding co-author Esteban Estrada, MD, of Stem Cell Argentina.

"In addition, hyperbaric oxygen therapy, used primarily in the treatment of carbon monoxide poisoning, air embolism suffered by divers, and as an enhancement to wound healing, has been shown to increase stem cell mobilization and the release of endothelial progenitor cells via a nitric oxide-dependent mechanism."

The clinical trial evaluated the safety of ASC-HBO combination treatment in 25 patients with type 2 diabetes.

According to the researchers, it is well known that with type 2 diabetes, there is an ongoing inflammation of the pancreas. Their hypothesis suggested that mobilizing stem cells would cause the growth of blood vessels (angiogenesis) and release factors that would result in the local differentiation of progenitor cells with a resulting anti-inflammatory effect. Diabetes, they added, has been shown to impair progenitor cell mobilization, a problem that local stem cell infusion could remedy.

Once more, the effect of the hyperbaric oxygen therapy, they hypothesized, would be to increase stem cell mobilization in such a way as "to target more than one crucial reparative step" to counteract the chronic injury that attack the endothelial progenitor cells and the islet cells.

"Overall, our results show that a close follow-up with intensive diabetic management alone could not be the only cause of the positive, progressive and consistent outcomes we obtained in this trial over one year of follow-up," said Dr. Estrada.

"A decade ago, research had explored stem cell transplantation and hyperbaric oxygen therapy as stand alone treatments. This study highlights the potential benefits of using an unusual combination therapy to treat diabetes" said Dr. Cesar V Borlongan, Associate Editor of Cell Transplantation and Professor at the University of South Florida College of Medicine.


References

Estrada, Esteban J.; Valacchi, Fabian; Nicora, Eduardo; Brieva, Sergio; Esteve, Claudio; Echevarria, Laura; Froud, Tatiana; Bernetti, Karina; Cayetano, Shari Messinger; Velazquez, Omaida; Alejandro, Rodolfo; Ricordi, Camillo. Combined Treatment of Intrapancreatic Autologous Bone Marrow Stem Cells and Hyperbaric Oxygen in Type 2 Diabetes Mellitus. Cell Transplantation 2008; 17 (12): 1295-1304.

Thursday, February 19, 2009

The IMPORTANCE of YOUR FAMILY'S STEM CELLS


Haemopoietic stem cell transplantation for children in Australia and New Zealand, 1998–2006:a report on behalf of the Australasian Bone Marrow Transplant Recipient Registry and the Australian and New Zealand Children’s Haematology Oncology Group.

This above study is an important milestone epidemiological study in CHILDREN published in the Medical Journal of Australia in February 2009. It gives us invaluable information and insight on the source of stem cells used (from bone marrow, peripheral blood or cord blood), their origin (autologous: own; related allogeneic: matched siblings; unrelated allogeneic: matched strangers) and on the indications for which a bone marrow transplantation has been performed. Moreover, it studies the important aspect of Transplant Related Mortality (TRM). Few of us actually have insight in those issues and understanding them will aid in deciding whether to keep your own stem cells or not.

Let's have a look!


Over a period of 9 years (1998-2006) 1,259 BMTs were performed in children in Australia and New Zealand, of which 41% were autologous (used the child's own stem cells from bone marrow or peripheral blood) while 59% were allogeneic (someone else's stem cells). Of the latter 40% were from a matched sibling (23.6% of the total) and 60% from matched strangers. That brings the total number of children ultimately finding stem cells from themselves or within their immediate family up to 65% while the remaining 35% had to depend on matched strangers to donate or on donated cord blood. It means that at the end of the day when a child was ill and in need of stem cells for BMT, then those were found in 65% of the cases from the child or the immediate family. More important is that the stem cells used were bone marrow or peripheral blood stem cells and that means that in that perilous period of a family's and a child's life an extra burden in collecting stem cells from the bone marrow or peripheral blood is added on top of all stress that is already evident. One can also speculate how this additional psychological stress and wait may impact on disease progression. If those families had been informed about cord blood stem cells and had kept their children's cord blood stem cells then those little frozen bags would have been stored and waiting to be used at any given time! Furthermore, the importance of using your own or those of a matched immediate relative is reflected in the TRM; Transplant Related Mortality is 22-28% when one receives a matched stranger's stem cells and only 5-7% if one receives their own or a matched sibling's stem cells.


The other important issue is that the matched stranger stem cells come nowadays more from donated cord blood stem cells than bone marrow/peripheral blood. In the latest years more than half, almost 2/3, come from donated cord blood and subsequently since cord blood stem cells are immunologically naïve and cause 30% less rejections, more mismatched transplants have been performed. One can speculate if this is the reason for the difference in Transplant Related Mortality that is higher in mismatched stem cells from strangers. So, if one would not keep for own use one should definitely donate for public use!


In the words of the authors of the study “Autologous BMT has an important role in a range of childhood cancers, including neuroblastoma, medulloblastoma, Ewing sarcoma/PNET, Hodgkin lymphoma and non-Hodgkin lymphoma” while “allogeneic (matched siblings or strangers) transplantation is most frequently offered to children with high-risk and relapsed leukaemias, myelodysplastic syndromes, aplastic anaemia, congenital bone marrow failure syndromes, thalassaemia major, sickle cell anaemia and various inborn errors of metabolism”.


The results of this study are similar to a previous one published in the Biology of Blood and Marrow Transplantation in 2007, entitled “Haematopoietic Stem Cell Transplantation in Australia and New Zealand, 1992-2004”. In this study that encompasses all transplantations in Australia and New Zealand both in adults and children, the same trend is evident and even more pronounced. That is, when you need stem cells you find them in you or in your immediate family! In2004 alone, 68% of the patients used their own stem cells (889/1,313) while another 19% received stem cells from matched siblings and only 13% managed to find stem cells from matched strangers. That means that a total of 87% found the needed stem cells in themselves or within the immediate family! Importantly, Transplant Related Mortality was 8.1% for stem cells from strangers compared 1.1% for own stem cells! One can also in the adult cases speculate how the effect of the additional psychological stress of stem cell collection and/or wait to find stem cells from strangers may impact on disease progression. If those families had kept their own peripheral blood stem cells then those little frozen bags would then have been stored and waiting to be used at any given time!


Cord blood stem cells and peripheral blood stem cells have an immense importance be it for a family's own use or for complete strangers where anyone can offer the hope of life. Regardless the use or the intention, those stem cells must be kept for their purpose to be fulfilled! Do not let them go wasted!



References


1. Moore AS, Shaw PJ, Hallahan AR, Carter TL, Kilo T, Nivison-Smith I, O'Brien TA, 
Tapp H, Teague L, Wilson SR, Tiedemann K. Haemopoietic stem cell transplantation
for children in Australia and New Zealand, 1998-2006: a report on behalf of the
Australasian Bone Marrow Transplant Recipient Registry and the Australian and
New Zealand Children's Haematology Oncology Group.
Med J Aust 2009; 190(3): 121-5

2.
Nivison-Smith I, Bradstock KF, Dodds AJ, Hawkins PA, Ma DD, Moore JJ,
Simpson JM, Szer J.Hematopoietic stem cell transplantation in Australia and New Zealand,
1992-2004.
Biol Blood Marrow Transplant 2007; 13(8): 905-12


Friday, January 30, 2009

Autologous PBSC bone marrow transplantation for MS

Fantastic NEWS for MS patients. New hope in the horizon with OWN Peripheral Blood Stem Cells the way StemLife companies around SE Asia have been collecting and storing for the past 9 years. This novel phase US II/III study (click on the title to see the study) confirms what European scientists have been investigating in the past few years with dr Fassas in Northern Greece as one of them. So this study provides one more proof that in Patients with MS, their OWN Stem Cells can be their chance to live a normal life again!

If you wish a comprehensive list on MS, a presentation in pdf form is available after emailing to info@thaistemlife.co.th