Progressive multiple sclerosis is a significant disruptive neurodegenerative disease that interferes with the brain’s ability to control the body; the condition continues to get worse over time and, to date, has no known therapeutic treatment or cure.
Petrou Et. Al’s double-blind clinical trial examined the therapeutic efficacy of mesenchymal stem cell (MSC) transplantation in active progressive multiple sclerosis and explored the most favorable route of cell delivery (intravenous or intrathecal injections).
Prior to this study, previous trials examining various types of MSC administration in the therapeutic treatment of multiple sclerosis have demonstrated the clinical safety of MSC administration but have not identified treatments to suppress central nervous system (CNS) inflammation associated with the progression of diseases like progressive multiple sclerosis.
Several studies have also demonstrated that CNS loses the ability to repair and regenerate over time. Considering that stem cells, and specifically MSCs, have demonstrated to provide additional benefits, including immunomodulatory and neurotrophic effects, when used in the treatment of stroke and multi-system atrophy, they appear to be a viable potential therapeutic treatment for active progressive multiple sclerosis.
For the purposes of Petrou Et. Al’s study, a total of 48 participants with a mean disease (active progressive multiple sclerosis) duration of 12.70 years were included as part of this study either as part of a placebo group, MSC-IV group, or MSC-IT group; selected treatment was applied at 3-month and 6-month marks of the study.
At the conclusion of this study, the authors report no serious, treatment-related adverse effects were observed and significantly fewer patients in the MSC-IT and MSC-IV groups experienced treatment failure when compared to the placebo group.
By reviewing changes observed in ambulation index, the sum of functional scores, 25-foot timed walking test, PASAT and OWAT/KAVE cognitive test, and the rate of change in T2 lesion load on MRI observed after the 6th-month treatment, researchers also found beneficial effects in both the MSC-IT and MSC-IV groups.
It appears that repeated intrathecal injection of MSC during the second round of treatment (Month 6) significantly improved the effects measured during the first round of similar treatment (Month 3); similar, but less significant benefits were also observed in the MSC-IV group. Specifically, researchers report that these observed benefits may indicate the involvement of immunomodulatory and neuroprotective mechanisms.
Of particular interest is the fact that the benefits with clinical significance were observed in participants with progressive multiple sclerosis found to be previously unresponsive to conventional immunotherapies and currently with limited treatment options.
In conclusion, this study found short-term clinical efficacy and perhaps neuroprotection by administration of MSCs to participants with progressive multiple sclerosis. The researchers also found that while repeated injections of both MSC-IT and MSC-IV produced beneficial effects, intrathecal administration appears to produce more clinically significant and observable benefits than MSC-IV.
These findings are recommended for use in the design of future studies examining the impact of cell therapy on neurodegeneration and neuronal regeneration and warrant Phase III study to confirm the therapeutic potential of cellular therapy in neurodegenerative and neuroinflammatory diseases, including multiple sclerosis.
The lower back plays a critical role in supporting the body and helping us stay upright. Unfortunately, it’s also one of the areas that experience the most pressure. The lower back clinically referred to as the lumbar spine, is made up of muscles, bone, and other tissue. The tissue, in particular, cushions the spine and protects it from the strain on our back, neck, and shoulders.
The lumbar spine comprises five vertebrae, and in between each is a specific type of soft tissue known as a disc. Large muscles also surround the vertebrae, and facet joints, or bands of connective tissue, are located between the vertebrae. Each part of this tissue network plays an important role in the support and mobility of your spine. They work together, balancing each other.
When an imbalance occurs, the result is often back pain. The source of the pain can be a single cause or a combination of factors. At its core, however, low back pain is almost always caused by the degradation of soft tissue. It’s often most pronounced in the spinal discs and facet joints, which contribute to movement throughout the upper body.
When discs degenerate, the discs collapse, causing the space between vertebrae to narrow. As this happens, the facet joints become strained, causing damage to the surrounding articular cartilage. Once cartilage starts to wear away, bones in the back can rub together, ultimately causing bone spurs.
Previously, there were few treatment options available for chronic lower back pain, all of which had their side effects to consider. While steroid injections offer temporary relief, they’re associated with side effects such as nerve damage. Surgery may be recommended in extreme cases, but back procedures are invasive and can therefore pose risks. Physical therapy can also help patients find relief, but it’s not always enough to help patients eliminate pain and restore mobility.
Fortunately, regenerative therapies such as stem cell treatments are helping patients find noticeable improvements in their symptoms. These treatments have been shown to be safe and effective, and unlike conventional practices, can help to address the soft tissue damage causing back pain.
The process entails acquiring the stem cells from either the patient’s adipose (fat) or bone marrow tissues or by a donated source of umbilical cord tissue. They are then administered directly into the compromised area under fluoroscopic guidance. There, the cells kickstart the body’s natural healing process by self-renewing and transforming into specialized cell types. Stem cells have the ability to heal damaged tissue and restore areas of tissue damage. With this cellular approach to healing, patients can pursue a more effective pain relief strategy than conventional treatments alone will provide. If you are interested then contact a care coordinator today!
Glaucoma is a complex group of interrelated eye conditions that affects over 70 million people worldwide. A leading cause of irreversible blindness in people over 60, glaucoma is a progressive condition that affects the optic nerve and leads to gradual loss of specific neurons that relay visual information from the retina to the brain; the progressive vision loss caused by glaucoma is often associated with increased pressure in the eyes[1].
Currently, pharmaceutical and surgical treatment for glaucoma focus on relieving pressure in the eye by treating the trabecular meshwork (TM), the part of the eye that relieves pressure by allowing drainage of the aqueous humor. Unfortunately, to date, these treatment options have demonstrated only to delay, not correct, or prevent, the progression of glaucoma. Additionally, these treatment options are not effective in repopulating or regenerating the retinal ganglion cells (RGCs), the neurons that relay visual information to the brain; in other words, these treatments have proven largely ineffective in patients with advanced stages of glaucoma.
With the advances made in stem cell therapy, and especially considering the functional properties of mesenchymal stem cells (MSCs), several new therapeutic approaches to treating glaucoma-related issues are currently being considered.
In this review article, Harrell et. al drew key observations from the information presented in over 250 journal articles to assess the current knowledge and future perspectives when considering the beneficial effects of MSCs in the treatment of glaucoma.
Specifically, researchers have found that the neurotrophins produced by MSCs encourage both the survival and regeneration of RGCs affected by glaucoma; MSCs appear to support RGCs by generating cells that are similar to RGCs and through promoting the expansion and differentiation of retinal stem cells (RSCs) in RGCs. MSCs are also believed to support the integrity of TM cells, allowing for pressure in the eyes to be reduced.
After reviewing the abstracts of 253 journal articles on the topic, the authors of this review concluded that the large number of studies examining MSCs’ ability to treat and/or protect the eye from the harmful effects of glaucoma was primarily dependent on MSCs capacity to provide neuroprotection for, and support regeneration in, RGCs.
However, as the authors point out, while several of these studies appear to demonstrate the potential benefits of MSCs and their secretome in glaucoma therapy, neither the safety nor efficacy have been validated in clinical settings or clinical trials with the appropriate number of enrolled patients.
While there appear to be several beneficial effects associated with using MSCs and their secretome in glaucoma therapy in humans, the authors conclude that these claims can only be verified if MSC-dependent therapeutic effects are confirmed through future clinical trials.
Amyotrophic lateral sclerosis (ALS), also known as motor neuron disease or Lou Gehrig’s disease, is a disease that gradually paralyzes people because the brain is no longer able to communicate with the muscles of the body that we are typically able to move at will[1]; as ALS progresses, people will lose the ability to walk, talk, swallow, and eventually breathe.
While no treatment to prevent or even slow the progression of, ALS currently exists, recent findings indicate that neurotrophic factors (NTFs) have been shown to potentially improve the survival of motor neurons in ALS. While a single administration of NTFs has not been effective in extending the life of these motor neurons, the review suggests the direct delivery of multiple NTFs by transplantation to the CNS has proven effective in animal studies.
Specifically, the observed benefits of mesenchymal stem cells (MSC) transplanted from bone marrow or adipose suggest improved neurological stabilization in patients with ALS. As such, the authors of this review have developed a method that produces a strong synergistic effect when introducing a combined delivery of neurotrophic factors in patients with ALS.
The authors, in this review, report on the safety and clinical effects resulting from phase 1 / 2 and 2a clinical trials in which autologous MSC-NTS cells were transplanted in patients with ALS. Both of these studies were considered open-label proof of concept studies where patients were followed up for 3 months before transplantation and 6 months after receiving MSC-NTS transplantation.
No serious adverse events were associated with MSC-NTF cells intramuscular (IM) injections, intrathecal injections (IT), or a combination of both (IT+IM) during these studies.
Additionally, neurotrophic growth factor secretion of patients’ cells was shown to be induced in the MSC-NTF cells when compared to MSCs of the same patient prior to differentiation. In all samples, MSC-NTF cells demonstrated increased secretion of NTFs when compared to non-differentiated MSCs from the same patient.
As a result of this study, the authors have concluded that IT and IM injections of MSC-NTF cells in patients with ALS are safe and well-tolerated. While not the primary focus of the study, the findings also demonstrated clinically meaningful benefits specifically induced by intrathecal treatment with MSC-NTF cells, including potentially slowing the rate of ALS progression.
Considering that neurologists specializing in the treatment of ALS consider a reduction in ALS-FRS-R slope of 25% or more to be clinically significant, the change in ALS progression rate observed after MSC-NTF cell transplantation in this study may indicate a clinically meaningful effect to be confirmed in future clinical trials.
After a decade of research, the safety and efficacy of intravenous infusion of bone-marrow-derived stem cells for therapeutic treatment in individuals with heart failure have been well established; however, until Bartolucci et al’s phase 1 / 2 randomized controlled trial of intravenous infusion umbilical cord mesenchymal stem cells (UC-MSCs) on heart disease, no clinical studies have examined the safety and efficacy of similar intravenous infusion of UC-MSCs in patients with chronic systolic heart failure (HFrEF).
Specifically, therapeutic treatment of heart failure with stem cells harvested from bone marrow has demonstrated improved cardiac function and regeneration of damaged heart tissue resulting in moderate clinical benefits in survival, left ventricular function, and improved quality of life in patients with HFrEF.
While MSCs isolated from adult bone marrow have demonstrated benefits, the invasive harvesting procedure and differentiation potential related to donor age and comorbidity associated with BM-MSC present several disadvantages when evaluating for clinical application.
On the other hand, when compared to BM-MSCs, umbilical cord-derived MSCs, or UC-MSCs, are easily attainable, demonstrate less cellular aging, and are not obstructed by potential ethical concerns.
With preclinical research demonstrating UC-MSC supporting enhanced vascular regeneration and cardiomyocyte protection, Bartolucci et al’s study aimed to evaluate the safety and efficacy of intravenous infusion of UC-derived stem cells for therapeutic treatment in individuals with heart failure.
This RIMECARD trial was the first randomized, double-blind, placebo-controlled study of intravenous infusion of allogeneic UC-MSCs in patients with chronic HFrEF. Although there has been limited experience on intravenous administration of MSCs in patients with cardiovascular diseases, it has been well established that MSC-based therapies are considered safe for therapeutic use in this application; further review of prospective clinical trials also did not detect a risk of infusion toxicity, organ system complications, infection, death, or malignancy in treated patients.
The results of the RIMECARD trial demonstrated that delivery of UC-MSCs seems safe for use in the HFrEF population with observable improvements in LVEF in patients receiving intravenous UC-MSC treatments. Researchers have proposed many potential reasons for the clinical benefits of the application of UC-MSCs among patients with heart failure including reduction in myocardial cell apoptosis, less myocardial inflammation and myocardial fibrosis, the formation of new cardiac-related blood vessels, and increased cell differentiation.
One notable observation of this study was the notable cardiomyogenic differentiation potential between UC-MSCs and BM-MSCs. It appeared that BM-MSCs presented a more favorable profile of transcription factors related to cardiac differentiation; however, findings demonstrating poor retention rates after intramyocardial injections of BM-MSCs render them potentially insufficient for what is required to be deemed clinically beneficial.
By comparison, the paracrine factors observed demonstrate a significant advantage of UC-MSCs over BM-MSCs with the most prominent difference being the expression of hepatocyte growth factor in UC-MSCs from all tested donors (BM-MSCs showed low to undetectable levels).
While further analysis and outcomes were considered limited based on small patient sample groups, IV infusion of UC-MSCs was found to be feasible and safe among patients with HFrEF, inducing no humoral immune response among test subjects. While findings suggest significant improvements in left ventricular function, functional status, and quality of life, the impact of UC-MCSs in patients with heart failure would be further supported through larger clinical trials.
Multiple system atrophy (MSA) is a rare, progressively degenerative neurological disorder that affects several of the central nervous system’s involuntary (autonomic) functions, including blood pressure, breathing, bladder function, and motor control.
Similar to Parkinson’s disease in both symptoms and progression, MSA has an average survival time of 7-9 years with no known treatment; the condition is generally characterized by slowed movement, rigidity of the muscles, and loss of balance.
With no effective medical treatment for MSA, current methods of treatment involve those known to reduce or manage symptoms and enhance care. However, with the rapid evolution of therapeutic treatments involving the use of stem cells, new research is exploring this application in the hopes of treating MSA and other degenerative diseases.
Stem cells and specifically adult neural, mesenchymal, and pluripotent stem cells are currently being researched in preclinical and clinical trials.
Examination of neural stem cells found in cerebral ventricles, the hippocampus, and within the striatum of the brain tissues, has revealed them to be self-renewing and have the potential to quickly differentiate. When studied in models using mice, neural stem cells were shown to mitigate into lesions of the brain, proliferate, and differentiate into three distinct types of nerve cells. Considering this, researchers believe neural stem cells to be the ideal donor cell for treating MSA. The biggest drawbacks associated with neural stem cells appear to be the difficulty associated with collecting them from the central nervous system.
Mesenchymal stem cells, or MSCs, found in bone marrow, umbilical cords, and adipose tissue are easy to obtain and have been demonstrated to be self-renewing and differentiate quickly. MSC animal models have also demonstrated improvement in Parkinson’s-associated symptoms, the ability to hinder immuno-inflammatory reactions, and the ability to improve overall cognitive ability – all without additional side effects.
Human umbilical cord blood, or hUCB-MNC, is also a known source of stem cells, and specifically mononuclear cells, which have been found to have high nerve regeneration functionality. In addition, hUCB-MNC are easy to collect, separate, and survive longer than other stem cells. When transplanted into the brain, animal studies have demonstrated hUCB-MNC’s ability to secrete nerve growth factors, repair damaged cells, and protect neurons. Other studies have shown that hUCB-MNC appears effective in treating a variety of nervous system diseases by reducing inflammation and regulating immunity within the central nervous system.
Regardless of the characteristics, benefits, and source of the various stem cells, the treatment appears to rely heavily on the method of transplantation for treating MSA. Specifically, successful transplantation relies on the stem cells’ ability to migrate to the CNS and integrate into tissues.
The lack of progress in developing successful treatment options for MSA has led to examining stem cells’ ability to self-replicate, self-renew, differentiate, and secrete neurotrophic factors as a potential treatment method for MSA and other related neurological diseases. As research evaluating the therapeutic benefits of stem cells progresses, the authors recommend continued monitoring of stem cell safety as well as the degree of survival and integration after transplantation into the human body.
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