Applied Stem Cell Therapy Expert, Neil Riordan, PhD, Authors “Cell Therapy for Liver Failure: A New Horizon” in Contemporary Liver Transplantation Medical Reference

DALLAS-FORT WORTH, TEXAS (PRWEB) NOVEMBER 08, 2016 (Original Press Release on PRWeb)

Picture of Neil Riordan, PhD

Neil Riordan, PhD

A new chapter by renowned applied stem cell therapy expert, Neil Riordan, PhD of the Riordan-McKenna Institute in Southlake, Texas; Medistem Labs Panama, and the Stem Cell Institute in Panama City, Panama, entitled, “Cell Therapy for Liver Failure: A New Horizon” is now available in the printed and online medical reference, “Contemporary Liver Transplantation – The Successful Liver Transplant Program”.

Contemporary Liver Transplantation provides a comprehensive review of the most crucial and provocative aspects of liver transplantation. The reference covers all disciplines involved in a multidisciplinary liver transplant team; provides a valuable resource for surgeons, hepatologists, anesthesiologists, transplant coordinators and administrators, amongst others; addresses organizational issues that are vital to the good performance of transplant programs; and offers the first 360-degree analysis of liver transplantation.

Liver failure is the seventh largest cause of death in industrialized countries. It occurs as a result of a number of acute and chronic clinical inciting factors, including drug-/alcohol-induced hepatotoxicity, viral infections, vascular injury, autoimmune disease, or genetic predisposition. The only available cure, liver transplantation, is severely limited by a lack of donors and further complicated by the adverse effects of chronic immune suppression.

In his chapter on stem cell therapy for liver failure, Dr. Riordan examines pre-clinical data and analyzes published clinical trials to identify promising sources of autologous stem cells to treat liver failure including: bone marrow mesenchymal stem cells (BM-MSC), adipose tissue MSC (AT-MSC), and bone marrow mononuclear cells (BMMC) including their purified forms. In addition, he delves into allogeneic stem cells such as those harvested from umbilical cords after normal, healthy births.

“Many liver failure patients contact our clinics in Panama and Texas asking if there is anything we can do for them. Unfortunately, we have to tell them that we cannot treat liver failure. Even though some clinical trials have shown signals of efficacy, which is encouraging, I don’t think sufficient rationale exists to treat liver failure patients with the types of stem cells I’ve studied at present,” stated Dr. Riordan.

About Riordan-McKenna Institute (RMI)

RMI specializes in non-surgical treatment of acute and chronic orthopedic conditions using *amniotic tissue allograft and bone marrow aspirate concentrate (BMAC) that is harvested using the patented BioMAC bone marrow aspiration cannula. Common conditions treated include meniscal tears, ACL injuries, rotator cuff injuries, runner’s knee, tennis elbow, and joint pain due to degenerative conditions like osteoarthritis.

Additionally, RMI augments orthopedic surgeries with BMAC and amniotic tissue allograft to promote better post-surgical outcomes and uses amniotic membranes as part of a complete wound care treatment regimen.

BMAC contains a patient’s own mesenchymal stem cells (MSC,) hematopoietic stem cells (CD34+), growth factors and other progenitor cells. Amniotic tissue allograft is composed of collagens and other structural proteins, which provide a biologic matrix that supports angiogenesis, tissue growth and new collagen during tissue regeneration and repair.

*Amniotic tissue is donated after normal healthy births.

Riordan-McKenna Institute Website: http://www.rmiclinic.com

Riordan-McKenna Institute
801 E. Southlake Blvd.
Southlake, Texas 76092

Tel: (817) 776-8155
Toll Free: (877) 899-7836
Fax: (817) 776-8154

About Stem Cell Institute Panama

Founded in 2007 on the principles of providing unbiased, scientifically sound treatment options; the Stem Cell Institute (SCI) has matured into the world’s leading adult stem cell therapy and research center. In close collaboration with universities and physicians world-wide, our comprehensive stem cell treatment protocols employ well-targeted combinations of autologous bone marrow stem cells, autologous adipose stem cells, and donor *human umbilical cord stem cells to treat: autism, cerebral palsy, multiple sclerosis, spinal cord injury, osteoarthritis, rheumatoid arthritis, heart disease, and autoimmune diseases.

In partnership with Translational Biosciences, a subsidiary of Medistem Panama, SCI provides clinical services for ongoing clinical trials that are assessing safety and signs of efficacy for autism, multiple sclerosis, osteoarthritis, rheumatoid arthritis, and spinal cord injury using allogeneic umbilical cord tissue-derived mesenchymal stem cells (hUC-MSC) and hU-MSC-derived mesenchymal trophic factors (MTF). In 2017, Translation Biosciences plans to expand its clinical trial portfolio to include heart disease and cerebral palsy.
*umbilical cord tissue is donated after normal, healthy births

For more information on stem cell therapy:

Stem Cell Institute Website: http://www.cellmedicine.com
Stem Cell Institute
Via Israel & Calle 66
Plaza Pacific Office #2A
Panama City, Panama

About Medistem Panama Inc.
Since opening its doors in 2007, Medistem Panama Inc. has developed adult stem cell-based products from human umbilical cord tissue and blood, adipose (fat) tissue and bone marrow. Medistem operates an 8000 sq. ft. ISO 9001-certified laboratory in the prestigious City of Knowledge. The laboratory is fully licensed by the Panamanian Ministry of Health and features 3 class 10000 clean rooms, class 100 laminar flow hoods, and class 100 incubators.

Medistem Panama Website: http://www.medistempanama.com

About Contemporary Liver Transplantation

Edited by Cataldo Doria, Contemporary Liver Transplantation provides a comprehensive review of the most crucial and provocative aspects of liver transplantation. It represents a unique source of information and guidance for the current generation of transplant surgeons that evolved from being pure clinicians into savvy administrators knowledgeable in every regulatory aspect governing transplantation.

The book contains 35 chapters covering every single aspect of the surgical operation in the donors as well as the recipients of liver transplants. The pre-operative work-up, as well as the post-operative immunosuppression management and the treatment of recurrent diseases are addressed in detail. Single chapters are dedicated to controversial issues like transplantation in patients diagnosed with NASH, transplantation for patients diagnosed with HCC beyond Milan criteria and usage of HIV positive donors. Dedicated chapters on HCV, HCC, FHF and NASH will make this book a unique resource for any health care provider part of the multidisciplinary liver transplant team.

The book goes beyond the analysis of the formal medical and surgical aspects of liver transplantation and introduces deep knowledge on key aspects of contemporary transplant programs, such as: physical rehabilitation, palliative care, pregnancy, the multiple requirements of regulatory agencies ruling transplantation, quality measurements for transplant programs, finance and liability.

The book is organized in 9 sections focusing on each key aspect of liver transplantation. Contemporary Liver Transplantation addresses the need and the questions of the multidisciplinary group involved including surgeons, Hepatologists, anesthesiologists, infectious disease specialists, radiologists, transplant coordinators, financial specialists, epidemiologists and administrators.

Contemporary Liver Transplantation Online: http://www.springer.com/us/book/9783319072081

Bone Marrow Stem Cells Successful For Liver Failure Caused by Hepatitis B

Peng et al. Hepatology.
The liver is the most regenerative solid organ in the body. One can resect 2/3 of the liver and it will still regenerate back to normal size. There have been several experimental studies in animals where induction of liver injury is treated by administration of bone marrow stem cells. A video describing this may be seen at this link http://www.youtube.com/watch?v=XGdehdRApb0. Previous use of bone marrow cells in patients with liver failure has been described in a Japanese publication that is presented in this video http://www.youtube.com/watch?v=DdH6Mm4w98I.
A recent study Peng et al. Autologous bone mesenchymal stem cell transplantation in liver failure patients caused by hepatitis B: Short-term and long-term outcomes. Hepatology. 2011 May 23 from the 3rd Affiliated Hospital of Sun Yat-sen University, in GuangZhou, China reported outcomes of 53 patients with hepatitis B induced liver failure treated with 120 ml of their own bone marrow stem cells infused via the hepatic artery. These patients were compared to 105 control patients that were matched for age, gender, and liver enzymes. Additionally, the functional index of liver failure, the Model for End-Stage Liver Disease (MELD) score, was matched between the treated and control groups.
Bone marrow stem cells were isolated without complications. The cells were administered as a slow infusion into the hepatic artery. Given that hepatitis is associated with an increase in hepatic cancer, one of the concerns of bone marrow stem cell administration into this patient population is the theoretical possibility of accelerating tumor formation. This appeared not to be the case. Specificallyt, follow-up at 192 weeks post treatment revealed no differences in incidence of hepatocellular carcinoma (HCC) or mortality between the two groups. Additionally, there were no significant differences in the incidence of HCC or mortality between patients with and without cirrhosis in the transplantation group. In terms of efficacy, it appeared that 2 to 3 weeks after administration of bone marrow stem cells, the levels of ALB, TBIL, PT and the MELD score of patients who received stem cells were significantly improved as compared to control patients. Improvements where maintained in the majority of patients.
These data support the possibility of using autologous stem cells in the treatment of liver failure. One possible new and less invasive method would be to mobilize the existing stem cells of the patient by administering drugs such as G-CSF (Neupogen) that trigger entry of bone marrow stem cells into circulation. The therapeutic activity of stem cell mobilization was demonstrated by Zhang et al. Granulocyte colony-stimulating factor treatment ameliorates liver injury and improves survival in rats with d-galactosamine-induced acute liver failure. Toxicol Lett. 2011 Apr 27 who demonstrated that 5 day administration of G-CSF had therapeutic effects in the d-galactosamine-stimulated liver failure model.

2011-05-23T19:25:22+00:00 May 23rd, 2011|Liver, News, Stem Cell Research|

Forcing Stem Cells into Circulation Results in Protection from Liver Failure in Animals

Zhang et al. Toxicol Lett.
While previous studies showed that administration of bone marrow cells are capable of repairing livers in animal and human studies, relatively little work has been performed to augment existing means by which the body uses its own stem cells to heal the liver. Specifically, it has been demonstrated that in liver failure bone marrow stem cells exit the bone marrow and home to the damaged liver. While conventional approaches include performing a bone marrow aspiration and mechanically placing the bone marrow into the liver, usually vial the hepatic artery, an alternative would be administration of a chemical that “instructs” the bone marrow stem cells to exit the bone marrow and go into systemic circulation. The other approach would be to augment the chemical signals that the injured liver produces to attract stem cells. This approach is currently pursued in other indications by the company Juventas. Stromal Derived Factor (SDF)-1 is produced by injured tissues and induces migration of bone marrow stem cells. The genetic administration of SDF-1 into already injured tissues causes an increase in stem cell trafficking and has been demonstrated to augment existing regenerative mechanisms.
A recent study (Zhang et al. Granulocyte colony-stimulating factor treatment ameliorates liver injury and improves survival in rats with d-galactosamine-induced acute liver failure. Toxicol Lett. 2011 Apr 27) from the First Affiliated Hospital, School of Medicine, of the Xi’an Jiaotong University demonstrated that administration of the stem cell mobilizer G-CSF into rats with chemically induced liver failure results in prolonged survival and the appearance of liver regeneration.
The investigators administered a single dose of d-galactosamine (d-GalN, 1.4g/kg) to induce ALF. After 2h, the rats were randomized to receive G-CSF (50μg/kg/day), or saline vehicle injection for 5 days. In the liver failure model, 5-day survival after d-GalN injection was 33.3% (10/30), while G-CSF administration following d-GalN resulted in 53.3% (16/30) survival (p=0.027). G-CSF treated rats had lower ALT level and less hepatic injury compared with saline vehicle rats. The increases of CD34+ cells in bone marrow and liver tissue and Ki-67+ cells in liver tissue in G-CSF treated rats were higher than those in saline rats.
These data suggest the possibility that stem cell therapy using chemicals that mobilize endogenous stem cells may be useful in the treatment of liver failure. It remains to be seen whether other chemicals associated with mobilization may cause improved outcome. For example, in addition to G-CSF, agents such as M-CSF, GM-CSF, parathyroid hormone, and the CXCR4 antagonist Mozibile are all capable of inducing mobilization of different types of stem cells.

2011-04-27T19:46:07+00:00 April 27th, 2011|Adult Stem Cells, Liver, News, Stem Cell Research|

Injured Liver Calls in Bone Marrow For Help?

Li et al. Cells Tissues Organs

It is known that administration of bone marrow cells into patients with liver failure has the ability to improve enzyme function and overall health http://www.youtube.com/watch?v=DdH6Mm4w98I. Additionally, numerous animal models have demonstrated that injection of various types of stem cells can result in regeneration of injured liver tissue. For example, Manuelpillai et al demonstrated that injection of human mesenchymal stem cells derived from the amnionic membrane into immune competent mice whose livers were damaged by carbon tetrachloride results in reduction in liver injury http://www.ncbi.nlm.nih.gov/pubmed/20447339. Even more interesting, administration of compounds that “instruct” bone marrow cells to enter circulation such as G-CSF, have been demonstrated to improve liver function and actually prevent mortality after liver injury http://www.ncbi.nlm.nih.gov/pubmed/20881764. This is relevant because G-CSF is a medication that is FDA approved and possesses a favorable safety profile.

One of the main scientific questions in the area of liver failure is whether the liver is actually “calling in” bone marrow stem cells to try to heal it after liver damage, or whether the therapeutic effects of stem cells in liver failure are an epiphenomena. In situations of cardiac damage after an acute myocardial infarction it has been demonstrated that the injured tissue causes upregulation of the protein SDF-1, which recruits bone marrow stem cells into the heart in order to promote healing. Whether similar mechanisms are at play in liver injury is not known. Part of the puzzle has to do with the fact that liver injury is a more chronic process than heart attacks and therefore recruitment of stem cells may be occurring at a much lower level. Alternatively, it is also known that chronic inflammatory processes actually suppress stem cell activity. So it may be that in chronic liver failure the stem cells are actually inhibited from possessing regenerative function.

This question was addressed in a recent study in which the gene expression profile of bone marrow cells was examined in animals with liver failure induced by administration of the hepatotoxin D-galactosamine to rats. To assess gene expression the Affymetrix GeneChip Rat Genome 230 2.0 Array was used, which quantifies gene expression of every gene in the rat genome. The scientists found that more than 87.7% of the genes/probe sets that were upregulated more than 2-fold in the bone marrow cells of rats with liver failure were also expressed by the liver cells, including 12 genes involved in liver development, early hepatocyte differentiation and hepatocyte metabolism. The concurrent upregulation of these genes was verified by the technique of reverse transcriptase polymerase chain reaction (RT-PCR).

The scientists also found that 940 genes were expressed in both the bone marrow cells of rats with liver failure and the hepatocytes of rats with liver failure but not in control cells. Specifically, many of the genes that were uprgulated in both the bone marrow and the liver seemed to be involved in regeneration of damaged tissue.

These data support the concept that the bone marrow stem cells can respond in similar ways to liver cells to injury. The hypothesis has been proposed by the authors that the bone marrow acts as a reservoir for the stem cells that are capable of regenerating liver. The mass amount of data in this publication is very interesting and requires detailed analysis to make sense of.

2011-02-02T20:58:07+00:00 February 2nd, 2011|Adult Stem Cells, Liver, News, Stem Cell Research|