Wharton’s jelly is a rather unique body fluid. It is the connective tissue found within the umbilical cord. While Wharton’s jelly is connective tissue, it more closely resembles gelatin. Historically this material was discarded as medical waste; however, Wharton’s jelly has been shown to contain a number of therapeutic substances. Among these healing substances found within Wharton’s jelly is an abundant supply of mesenchymal stem cells.
One of the most intriguing features of Wharton’s jelly is that it contains a virtually limitless supply of mesenchymal stem cells. There are about 4 million new births in the United States each year, 5 million in the European Union, and over 100 million worldwide. The potential pool of cells is staggering when you consider only a small amount of Wharton’s jelly can contain millions of stem cells. Notably, Wharton’s jelly is usually discarded after the delivery of a healthy baby. If this material could be donated instead of discarded, researchers believe they have found an abundant, renewable resource from which to draw mesenchymal stem cells.
However, the abundance of Wharton’s jelly is not the most impressive feature of the substance. The stem cells found in Wharton’s jelly are rather unique. Perhaps most importantly, the cells are immuno-privileged. This means they are not readily recognized by the immune system. Consequently, the stem cells can be taken from the umbilical cord, purified, and then injected into a patient with little risk of the patient having an immune reaction to the cells. These particular mesenchymal stem cells are also interesting because they are relatively “primitive,” which means they have some of the same properties of embryonic stem cells. However, Wharton’s jelly can be obtained without controversy, while harvesting embryonic stem cells from aborted tissue remain highly controversial.
Stem cells taken from Wharton’s jelly are already being used in some clinical studies. For example, researchers in one clinical study injected type 2 diabetes patients with Wharton’s jelly-derived mesenchymal stem cells. Within six months of treatment, 7 of 22 patients became insulin-free and 5 were able to reduce the amount of insulin they needed by more than 50%. Only one patient out of the 22 did not respond to the stem cells at all. The cells have also been tested in systemic lupus erythematosus, better known as simply lupus. Forty patients received Wharton’s jelly mesenchymal stem cells intravenously. Thirteen patients enjoyed a major clinical response while 11 enjoyed a partial clinical response of their lupus symptoms.
As more clinical studies are done on Wharton’s jelly-derived mesenchymal stem cells, we will learn what other diseases can be treated with this once-discarded substance. Early indications show a very promising future.
People with heart failure may have trouble breathing, walking, and having a normal life. Current treatments for heart failure are aimed at making the healthy heart tissue pump harder (e.g. digoxin). On the other hand, treatments largely ignore dead heart tissue because there A myocardial infarction, better known as a heart attack, occurs when blood flow through the coronary arteries to the heart is blocked. This usually occurs when a blood clot forms in a coronary artery. Since the heart is a highly active muscle, it requires a constant supply of oxygen and nutrients to maintain its pumping function. When the heart muscle is starved of oxygen, as is the case during myocardial infarction, heart cells become dysfunctional. If blood flow through the coronary arteries (which carries oxygen to the heart) is not restored soon after a heart attack begins, those dysfunctional heart cells will die.
When heart tissue has been destroyed by a heart attack, patients are usually left with poor heart function. This can lead to congestive heart failure. One way to determine whether someone who has had a heart attack has suffered lasting heart damage is to perform an echocardiogram, or simply an “echo.” By performing an echo, doctors can estimate the heart’s ability to pump blood by measuring left ventricular function.
has been no known way to rescue it. With the discovery and use of stem cells, however, there is a chance that scientists may be able to rescue dead heart muscle and improve cardiac function.
In a study, researchers blocked the coronary arteries of experimental animals to cause myocardial infarction. Four weeks later, they injected either bone marrow-derived stem cells or adipose-tissue-derived stem cells into the heart. Impressively, blood flow significantly improved to the heart and heart function. Treated animals had substantially higher left ventricular ejection fraction, essentially reversing heart failure a full month after a heart attack. Shockingly, the researchers found that stem cells appeared to salvage dead heart tissue, meaning that the size of the damaged area was smaller after treatment.
While these incredible results will need to be replicated in humans, this research represents an exciting breakthrough in cardiology and regenerative medicine. The stem cell approach may be able to help patients who have had a heart attack, but could not get medical treatment in time to remove the clot.
The application of stem cells to treat health disorders, diseases, and injuries has been rapidly expanding in recent years. The breadth of their application comes from the fact that stem cells are undifferentiated and can, therefore, differentiate into all sorts of cells with different specialized functions and therefore have an enormous number of potential ways that they can improve health. A review published in Frontiers in Physiology covers the way stem cells can be used for therapy of oral diseases.
According to the authors of the article, adult stem cells and induced pluripotent stem cells are the best types of stem cells to use to treat oral and maxillofacial defects. There are pros and cons associated with adult stem cells, including both autologous and allogeneic stem cells, as well as with induced pluripotent stem cells. For instance, whereas autologous stem cells can modulate the immune system, allogeneic stem cells appear helpful for malignant diseases, and induced pluripotent stem cells are unlimited in terms of their source and do not involve any ethical issues.
There are a number of potential sources for treating oral disease, including tooth germ progenitor cells, dental follicle stem cells, salivary gland stem cells, stem cells of the apical papilla, dental pulp stem cells, inflamed periapical progenitor cells, among others. While adults stem cells can differentiate directly into specialized cells or can be turned into induced pluripotent stem cells, induced pluripotent stem cells can be driven to differentiate into specialized cells.
Clinical trials have been undertaken to study the ways in which stem cells can address a number of oral diseases, including bone diseases, dental pulp diseases, eye diseases, facial diseases, and periodontal diseases, as well as tooth extraction. The strategies for treating oral disease with stem cells involve sorting and expanding the stem cells outside of the body, mixing them with materials and factors that help them grow, and implanting them into the impaired region.
Future research will help to delineate the different ways in which certain types of stem cells can best be used to address individual oral diseases. Studies will also help to uncover the specific types of stem cells that are best for specific diseases and the protocols that should be used to reap the greatest benefits for patients.
Multipotent stem cells have the ability to turn into a number of different cells in the body, making them one of the most versatile solutions in regenerative medicine. They are also characterized by their capacity for self-renewal. Here, we take a look at their current applications, as well as their benefits.
What Makes Multipotent Stem Cells Unique?
To understand the distinguishing features of multipotent stem cells, we must first look at the different types of stem cells. There are three main classifications for the varying degrees of stem cell flexibility:
Totipotent: These cells can turn into any cell in the body and are only found within the first couple of cell divisions following the fertilization of a female egg by a male sperm.
Pluripotent: During embryonic development, totipotent cells specialize into pluripotent cells. They can give rise to all cells in the human body but aren’t quite as flexible as totipotent cells.
Multipotent: Finally, pluripotent stem cells specialize into multipotent stem cells, which have been found in cord blood, cord tissue, adipose tissue, cardiac cells, bone marrow, and mesenchymal stem cells (MSCs).
What Are Multipotent Stem Cells Used for?
Not only are multipotent stem cells able to renew themselves almost indefinitely, their ability to become any other cell makes them a powerful agent in treating patients with tissue damage. From knees to other joints and even the gastrointestinal tract, there are many sites in the body where compromised tissue can benefit tremendously from stem cells. They can even help arthritis sufferers and individuals with tendonitis. Because stem cells can also replenish dying or damaged tissue of specialized cell types, multipotent stem cells can also benefit individuals with chronic illnesses such as COPD, multiple sclerosis (MS), and Parkinson’s disease.
What Are the Benefits of Multipotent Stem Cells?
Multipotent stem cells are advantageous because they can be sourced from a number of locations, including the Wharton’s Jelly which lines umbilical cord vessels, as well as fat tissue (adipose stem cells) and bone marrow aspirate. These cells can then be delivered via non-invasive regenerative therapy to replace damaged cells with new ones, which have the ability to help increase energy and control symptoms in chronic conditions. The treatment can also potentially spur healthy tissue development in musculoskeletal injuries, and when injected directly into the joint, it has the potential to promote healing of ligaments, tendons, and cartilage to help return functionality and in some cases could delay the need for joint replacement.
Crohn’s disease is a chronic inflammatory bowel disease that has no cure. It causes abdominal pain, frequent diarrhea, weight loss, fatigue, and anemia. While the disease can be controlled to some degree through oral and injectable medications, life-threatening complications may occur.
One of the feared complications of Crohn’s disease is called a bowel fistula. A fistula is an abnormal connection between two places on the body. In Crohn’s disease, a fistula forms between the intestine and some other structure—the intestine essentially forms a “tunnel.” The fistula can form between one loop of intestine and another, between intestine and bladder, or even between the intestine and the outside of the body. This complication of Crohn’s disease is obviously quite distressing to patients.
Some bowel fistulas may close on their own with conservative treatments, but fistulas associated with Crohn’s disease do not respond well to available medical treatments. Those looking for an alternative treatment may be able to consider stem cell therapy.
Stem cells offer an interesting potential solution to this problem. Stem cells can provide a large dose of normal cells filled with molecules that can help direct normal bowel growth and development. Indeed, researchers have shown that autologous mesenchymal stem cells can help close and heal fistulas in patients with Crohn’s disease.
In phase I, II, and IIB clinical trials, stem cells derived from adipose tissue or bone marrow were directly infused into the bowel area (via a so-called intra-fistular injection). Across five clinical studies including over 100 patients, stem cell administration resulted in complete fistula healing in 50 to 80% of patients treated. Of those who did not obtain complete control fistula closure, almost all had evidence of improvement. These results support that autologous mesenchymal stem cell therapy is a promising future treatment for patients with Crohn’s disease and may offer patients enjoy a better quality of life.
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