Living with Parkinson's disease—or watching a loved one endure its daily challenges—can be an emotional and physical rollercoaster. Parkinson's disease is the second most common neurodegenerative disease after Alzheimer's. With over 10 million people affected worldwide, the search for an effective treatment is more urgent than ever.

Stem cell therapy has a focal point in that search, but how well does it really work? In this article, we’ll take a look at stem cell therapy for Parkinson's, breaking down success rates, the latest research, and real-life patient stories.

Table of Contents

  1. What Are Stem Cells and Stem Cell Therapy?
  2. How Can Stem Cells Help with Parkinson's Disease?
  3. Research and Clinical Trial Results
  4. Patients’ Reviews About Stem Cell Therapy
  5. The Procedure: What to Expect
  6. Risks and Side Effects
  7. How to Maximize the Success of Stem Cell Therapy for Parkinson’s Disease?
  8. Takeaways
  9. FAQ

What Are Stem Cells and Stem Cell Therapy?

Success rate of stem cell therapy for Parkinson's disease

Stem cells are like the body's raw materials—they have a unique ability to transform into different types of cells, such as muscle, blood, or brain cells. This versatility makes them incredibly valuable in medical treatments. In the context of Parkinson's disease, the idea is to use stem cells to replace or repair the damaged brain cells responsible for the symptoms.

Cell therapy introduces these stem cells into the brain, where they can grow into healthy, functioning brain cells. While it's still an emerging field, stem cell-based therapy offers a promising path forward in tackling conditions previously thought untreatable.

How Can Stem Cells Help with Parkinson's Disease?

To understand how stem cells might work for Parkinson's, it's important to first grasp what's happening in the brain affected by the disease.

🤔 What is Parkinson's disease?

Parkinson's disease is a progressive neurological disorder that affects movement. It starts gradually, often with a barely noticeable tremor in one hand, and progresses to more severe symptoms that interfere with daily life.

🤔 What are the symptoms of Parkinson's disease?

Parkinson's motor symptoms can vary but often include:

  • tremors;
  • muscle stiffness;
  • slowed movement;
  • balance problems.

These symptoms result from the brain's inability to control movement properly. As the disease advances, non-motor symptoms like sleep disturbances, mood changes, and cognitive decline can also occur.

🤔 What are the causes of Parkinson’s?

The exact cause of Parkinson's disease remains unclear, but many researchers believe it results from a combination of genetic and environmental factors, such as exposure to toxins. While genetics can play a role, the disease rarely runs in families.

🚨 Risk factors. The biggest risk factor for developing Parkinson’s is advancing age, with the average age of onset being around 60. As people get older, the risk of developing the disease increases. However, 10-20% percent of Parkinson’s cases are linked to genetic causes, especially in younger PD patients.

🧠 Biological cause. Parkinson’s disease involves the degeneration of neuronal cells in the brain. Healthy neurons produce dopamine—a chemical that transmits signals coordinating smooth and controlled movements. As these dopamine-producing cells die off, the brain's ability to regulate movement deteriorates, leading to the symptoms associated with Parkinson's.

🤔 How can stem cells help?

For Parkinson's disease, stem cell therapies aim to replace dopamine-producing neurons that are lost as the disease progresses.

Scientists can guide stem cells to become these specific neurons in the lab and then transplant them into the patient's brain. The transplanted cells can:

  • 🧠 Produce dopamine. The newly introduced neurons can start producing dopamine, the chemical needed for smooth, controlled movements.
  • 🔗 Restore neural pathways. They can establish new connections within the brain, restoring some of the lost communication between neurons.
  • 🛡️ Provide neuroprotection. Stem cells can release protective factors that support the survival of existing neurons, potentially slowing the progression of the disease.
  • 🔥 Reduce inflammation. Chronic inflammation in the brain contributes to Parkinson's symptoms. Stem cells can release bioactive molecules, such as cytokines and growth factors, that have anti-inflammatory properties. They help modulate the immune system's response, calming the overactive immune cells in the brain that contribute to inflammation.
  • ⏳ Slow down disease progression. Current treatments for Parkinson's, like medication and deep brain stimulation, primarily manage symptoms without addressing the root cause. By replenishing the brain's supply of dopamine-producing cells and protecting existing neurons, stem cell therapy could slow the disease's progression and offer patients long-term relief.
  • 💊 Reduce dependency on medication. Long-term use of Parkinson’s medications can lead to severe side effects, including dyskinesia (involuntary movements) and psychosis. Stem cell therapies might reduce or even eliminate the need for these drugs. By doing so, it can help prolong independence, enhance the quality of life, and alleviate patients’ anxiety.

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Parkinson's Stem Cell Treatment: Research and Clinical Trial Results

Success rate of stem cell treatment for Parkinson's disease: Clinical trial results

To gauge the success of stem cell therapy for Parkinson's disease, it's essential to look at recent research and clinical trials. While this field is still relatively new, studies already show positive results. Let's look at some key findings from recent clinical studies.

📈 Safety and symptom improvements

  • A meta-analysis of 11 clinical trials involving 210 Parkinson’s patients showed that a significant proportion of patients (86.5% to 100%) responded positively to the therapy.
  • A clinical trial by BlueRock Therapeutics found that stem cell therapies are safe for patients with advanced Parkinson's, with minimal side effects.
  • Specialized imaging has shown that injected stem cells can survive and successfully integrate with the brain's existing neural cells.
  • In the same clinical trial, 11 out of 12 patients experienced motor symptom improvement after stem cell treatment.
  • A phase IIA study tested the effects of injecting stem cells from bone marrow. The therapy showed noticeable improvement in patients' motor symptoms when not on medication, as measured by a standard symptom severity scale (UPDRS). This indicates that stem cell treatment can enhance motor functions without medication support.
  • In a notable case study, a patient receiving infusions of mesenchymal stem cells showed notable improvements in symptoms. After the first 10 infusions, the patient showed better posture, less frequent freezing, and no tremors. The UPDRS motor function score improved from 14 to 2. Severe dyskinesia was eliminated, going from 7 to 1.

⌛ Effectiveness over time

  • Improvements in motor function, such as reduced tremors, muscle stiffness, and better movement control, were observed consistently across different follow-up periods, ranging from 3 months to over 3 years.

☀️ Impact on daily life

  • Stem cell therapy significantly improved Parkinson’s patients' ability to perform activities of daily living (ADL) when off medication.
  • In the case study, the patient could discontinue several medications and reduce others by 25% after stem cell therapy.
  • Following the treatment, the patient no longer required a 24-hour caregiver. She regained independence and could perform daily tasks like meal preparation and household chores without assistance.

🎭 Non-motor symptoms

  • The meta-analysis contained reports of improved mood, sleep, and cognitive function after stem cell therapy.
  • In the case study, the patient gained cognitive function, satisfaction with social roles, and the ability to keep up with work responsibilities. Anxiety scores improved from 23 to 19, and feelings of exhaustion decreased.
  • In the BlueRock Therapeutics clinical trial, Parkinson’s patients showed positive results in neuropsychological evaluations, including cognitive functioning and frontal-lobe behaviors. There were signs of enhanced immediate and delayed memory.

Patients’ Reviews About Stem Cell Therapy

Nothing speaks louder about the impact of stem cell therapy than the experiences of the patients themselves.

🎞️ See the real stories of patients who underwent stem cell therapy for Parkinson's disease at top clinics:

🏥 The patient suffering from Parkinson's underwent stem cell treatment after a stroke at Reju Medical Clinic (Medellín, Colombia):

Reju Medical Clinic
Colombia, Medellín
92% patients recommend

Reju Medical is a private multi-specialty medical center located in Medellín, Colombia. The team is dedicated to Aesthetic Medicine and Cosmetology, and Longevity health. At REJU, your safety is our number one priority. The skilled and caring medical providers will bring patients' disposal a wealth of experience in stem cell applications and therapies. The procedure will be performed only with very experienced medical professionals with a minimum of 15 years of experience in the field.

They will take a hands-on approach to adapting and altering patients' stem cell requirements to minimize pain wherever possible and increase comfort levels during recovery.

Reju Medical serves both adults and children. 350 patients choose Reju Medical to get medical care every year. Patients from the USA, Canada, and Australia visit the clinic most often.

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Mr. Iwan combatted his Parkinson's symptoms with stem cell therapy at Vita Medical Wellness Center (Kuala Lumpur, Malaysia):

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📝 Written testimonials froom Bookimed patients provide additional perspectives on the beneficial effects of stem cell therapy and the quality of care at the clinics:

Parkinson's disease stem cell treatment success rate: patient reviews

🔎 Find out more about the clinics where these patients received treatment and the options available for you:

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At first I was hesitant for the treatment in Mexico but after the meeting with doctor Isabella, my entire perspective changed. She is very knowledgeable, professional and personable. She will explain the treatment and procedure with you in detail. I will not hesitate again to recommend her to any of my friends and family. She will perform the procedure in the comfort of your own residency without having to travel to the clinic. This is very accommodating as it minimizes the interruption if or when you are on vacation. I will be following up with her in the coming months as she is now my go to doctor.
— Gordon Lew
Canada, Jun 3, 2024
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Hospital certificates and accreditation of quality

Consejo de Salubridad General certificate for Immunotherapy Regenerative Medicine

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I love this place. Bookimed direct me to the correct hospital and I’m on recovery period now. I’m very much satisfied with this treatment.pain free treatment and worthy for my money and time. Hope my Spine cerebral ataxia will reverse from this cell transplant treatment from GIOSTAR Mexico.. Thank you again to Bookimed company and GIOSTAR hospital staff s.
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The Procedure: What to Expect

1️⃣ Pre-treatment assessment. Before the therapy begins, patients undergo thorough evaluations, including neurological exams, imaging scans, and blood tests. 

2️⃣ Stem cell harvesting. Depending on the type of stem cells used, they may be harvested from the patient’s own body (autologous) or taken from the stem cell bank (allogeneic). 

3️⃣ Processing and culturing. Once harvested, the stem cells are processed and sometimes cultured in a lab to ensure they are in the optimal state for transplantation.

4️⃣ Stem cell transplantation. The transplanted cells will grow and potentially restore brain function. There are several methods of stem cell administration:

  • 💉 Stem cell injection. The most common method involves directly injecting stem cells into the brain, targeting the substantia nigra—the area rich in dopamine-producing neurons. The transplanted cells will grow and potentially restore brain function.
  • 💧 Intravenous infusion. Stem cells are infused into the bloodstream, where they travel to the brain and help improve symptoms through immunomodulatory mechanisms. It's less invasive, safer, and easier to perform than direct brain injections and can be more cost-effective.

5️⃣ Post-transplantation care. After the procedure, patients are monitored closely for any side effects or complications. They may need to follow a specific rehabilitation plan to maximize the therapy’s benefits.

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What types of stem cells are used for Parkinson’s treatment?

🧫 Mesenchymal stem cells (MSCs). Often derived from bone marrow or adipose tissue, MSCs are able to reduce inflammation and support the repair of damaged tissues. Clinical trial results show that MSCs improve Parkinson’s symptoms by promoting dopamine production and releasing growth factors.

🧫 Embryonic stem cells (ESCs). Have infinite proliferation capacity and can differentiate into dopamine-producing neurons, crucial for treating PD. ESC transplantation into the midbrain's substantia nigra has shown significant recovery in lab models.

🧫 Induced pluripotent stem cells (iPSCs). These adult stem cells have been genetically reprogrammed to an embryonic stem cell-like state. Induced pluripotent stem cells can differentiate into any cell type, including dopamine-producing neurons. A Japanese clinical trial using iPSCs demonstrated symptom improvements throughout 2 years after the treatment.

🧫 Fetal stem cells. Patients have shown a 50–60% reduction in Parkinson's symptoms after transplantation of fetal dopamine neurons. Harvard Stem Cell Institute researchers have successfully grown these fetal dopamine-producing cells from stem cells in labs. When transplanted into patients' brains, these neural cells remained healthy and functional for up to 14 years.

Risks and Side Effects

Most clinical trial results show no severe adverse reactions to stem cell-based therapy. A clinical trial meta-analysis documents no cases of tumor growth or severe immune rejections related to the treatment.

Although rare, other possible risks include:

  • Surgical complications. For stem cell transplantation in the brain, there is a small risk of infection, bleeding, hematoma, or phlebitis (inflammation of a vein).
  • Dyskinesias. A few clinical trials reported graft-induced dyskinesias (GID), leading to involuntary movements in some patients.
  • Psychonosema. Rare psychological disturbances, such as mood changes or anxiety.

Mild side effects may include headaches, nausea, and temporary discomfort at the injection site.

💚 Choosing Bookimed means ensuring safety and quality control. We partner with board-certified doctors and have a network of over 1,500 internationally certified centers, helping patients minimize unnecessary risks.

How to Maximize the Success of Stem Cell Therapy for Parkinson’s Disease?

How to maximize the success rate of stem cell therapy for Parkinson's

1️⃣ Early intervention. Administering stem cell therapy in the early stages of Parkinson's disease may result in a better outcome, as there is more healthy brain tissue to support recovery and regeneration.

2️⃣ Optimized stem cell type and source. Allogeneic cells (from a donor) have been shown to be more effective than autologous cells (from the patient). Allogeneic cells also offer logistical advantages, as they can be prepared in advance and under standardized conditions. However, they do come with a higher risk of immune rejection, which can challenge the survival of the transplanted cells. Fortunately, modern immunosuppressants have significantly improved graft survival, helping to overcome this barrier.

3️⃣ Precise delivery method. The stem cell delivery method should be tailored to the patient's condition. Precise targeting of affected brain areas can enhance the therapy's effectiveness.

4️⃣ Optimal dosage and frequency. Clinical trial results show that the dosage and frequency of stem cell administration can affect the therapy's success. Finding the right balance, such as repeated infusions or higher doses, may enhance motor function improvements and prolong the benefits.

5️⃣ Post-transplantation care. Post-procedure monitoring and rehabilitation are crucial for maximizing the therapy's success. Patients may need a customized plan to support their recovery, including physical therapy and lifestyle adjustments.

6️⃣ Working with accredited clinics. Choosing a reputable clinic with experience in stem cell therapy for Parkinson's disease can help ensure the procedure is safe and effective. Bookimed partners with internationally certified clinics, ensuring patients receive top-quality care tailored to their needs.

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Takeaways

👉 Stem cell versatility. Stem cells can transform into different cell types, including neural cells, and replace dopamine-producing neurons destroyed by Parkinson’s disease.

👉 Stem cell therapy goals. For Parkinson's disease, stem cell-based therapy aims to improve symptoms and slow disease progression by producing dopamine, restoring neural pathways, and reducing inflammation in the brain.

👉 Clinical success. Studies have shown positive clinical outcomes, with 86.5% to 100% of patients experiencing improved motor symptoms.

👉 Effects’ duration. Improvements in motor function, such as reduced tremors and better movement control, have been observed consistently from 3 months to over 3 years.

👉 Enhanced daily life. Stem cell therapy has helped patients regain independence and reduce medication usage, boosting their ability to perform daily activities.

👉 Minimal side effects. Most clinical studies report no severe adverse reactions, with no cases of tumor growth. Some rare side effects include graft-induced dyskinesias and mild surgical complications.

👉 Procedure variety. Doctors can administer stem cells through direct brain injection or intravenous infusion. Each method has its benefits, with IV being less invasive.

👉 Optimizing success. Factors like early intervention, appropriately chosen stem cell type, precise delivery, and working with accredited clinics can maximize the therapy's success.

FAQ

Is there a cure for Parkinson's disease?

Currently, there is no definitive cure for Parkinson's disease. However, medications, deep brain stimulation, and innovative treatments like stem cell therapy can help manage symptoms and improve quality of life. Stem cell therapies, in particular, offer a promising avenue for slowing disease progression and restoring some lost function.

Are there any complementary therapies to assist with recovery?

Yes, several complementary therapies can support recovery and improve the quality of life for Parkinson's patients:

  • Physical therapy can help maintain mobility and balance. Physical therapists guide patients through exercises that enhance motor function and reduce symptoms like stiffness and tremors.
  • Occupational therapy improves daily living skills, such as dressing, grooming, and eating. Occupational therapists teach strategies to improve coordination and balance, reducing the risk of falls and making everyday tasks easier.
  • Speech therapy addresses speech and swallowing difficulties. Speech therapists work to improve voice clarity and strength, enhancing the patient's communicative abilities.

Additionally, activities like yoga, tai chi, and regular exercise can help enhance flexibility, strength, and overall well-being. 

What other treatments for Parkinson’s disease exist?

In addition to stem cells and the abovementioned therapies, several other treatments are available to manage Parkinson's symptoms:

  • Medications. The most common Parkinson’s treatment involves medications like Levodopa, which helps replenish dopamine levels in the brain. Other drugs, such as dopamine agonists and MAO-B inhibitors, can also help manage symptoms. However, PD patients may become less responsive to these medications over time. They can also cause serious side effects like psychosis.
  • Deep Brain Stimulation (DBS). A surgical treatment where doctors implant electrodes into the brain areas controlling movement. These electrodes deliver electrical impulses to help regulate abnormal brain activity, improving motor function and reducing motor symptoms like tremors and rigidity.

How much does stem cell therapy for Parkinson's disease cost?

In the United States, stem cell-based therapy for Parkinson's disease is still considered experimental and is not widely available. However, patients may have the opportunity to participate in clinical trials.

In other countries where stem cell therapy is more accessible—such as Mexico, Colombia, Turkey, Thailand, Ukraine, and Malaysia—the costs can range from $5,000 to $30,000, with the average cost around $16,000.

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