My PD Story

Darrell Allers headshot
People with PD

Darrell Allers

For having lived with Parkinson’s disease (PD) for many years, I had no answer to the question of how I got this disease. No family members had Parkinson’s. I didn’t even know friends, neighbors, nor work associates with Parkinson’s. Here’s my story.

Around 31, a tremor started in my right arm — I was diagnosed with essential tremor. Additional symptoms appeared over the next 12 years. Symptoms were treated as individual issues and my life went on with a hand in my pocket, to hide the tremor. 

At 40, one morning I was met with a poison ivy rash on my arm. Benadryl was taken to dry up the rash. Family members observed improvements in certain PD symptoms during this time. Without knowing, Benadryl was my first treatment for PD.

My gait started to change when I turned 42. At my sister’s wedding reception, the band started to play polka and I gestured to my mom, let’s go. However, my feet were not cooperating with the requirements of the dance. My feet were glued to the floor (now I know this is called a freezing episode). That was not dancing the polka. 

The poison ivy and polka incidents motivated me to see a doctor for a second time. This resulted in my official diagnosis. At 42, I was diagnosed with PD.

The next 18 years involved treating my symptoms and living a normal life. My PD was progressing very slowly and life was good. At 60, I woke up one day and decided it was time to retire.

I jumped right into retirement and my physical activity increased without an understanding of my limits. The result was a rotator cuff tear in my shoulder, which required surgery. Activities were very limited during recovery. I joined the Parkinson’s Foundation as a volunteer to get off the couch.

I participated in PD GENEration: Mapping the Future of Parkinson’s Disease initiative. Roughly six weeks after submitting my genetics tests, my report from the lab detailed that the cause of my Parkinson’s was genetic. My question of “How did I get this disease?” was finally answered. This means that my initial tremor was likely misdiagnosed. 

There are many volunteer roles in the Parkinson’s Foundation and my interest settled on giving presentations in the community. First, I needed to complete the Ambassador training which was very helpful and increased my PD knowledge. My motivation to pass the training quickly became my reality and I became a Parkinson’s Foundation Ambassador for the Georgia Chapter.

My duties as an ambassador include tabling at conferences, helping at our symposium, helping with site reviews, and reporting on grant recipients, and presenting “PD 101” in the community. I increased my duties to become the Chair of the Georgia Chapter Mission & Outreach Committee where my leadership qualities are used to define roadmaps and subcommittees, and track progress for the chapter.

Over the years, every Thanksgiving I am thankful for poison ivy, the polka, and a torn rotator cuff. These were the important events that helped me gain clarity of my past and find a sense of purpose for the future.

Explore the many ways to volunteer with the Parkinson’s Foundation. Fill out our volunteer interest form today

My PD Story

Rebecca LeClair on stage at Moving Day Walk
Family Members

Rebecca LeClair

I unabashedly tell people that I am a selfish volunteer. Everything I do is to help my brother, Greg. 

Selfishness is normally considered a negative characteristic, but in this case, I’m proud to be a selfish volunteer for the Parkinson’s Foundation. Luckily, everything I do for the Foundation helps Greg, and vicariously helps others too! I think that’s pretty positive.

My volunteer history with the Parkinson’s Foundation started more than a decade ago — soon after my brother was diagnosed. He hadn’t even turned 50 and was already displaying a range of symptoms. Each successive symptom seemed nastier than the previous. I was scared for him and for the rest of my family.

While I was researching everything I could about the disease out of fear that I could also “get” Parkinson’s, I jumped into the Foundation’s local chapter with both feet on the ground and arms in the air. I learned so much at the Annual Symposium that I demanded every family member of mine attend the next year and we’ve gone every year since!

At the time of Greg’s diagnosis, I worked as a local news reporter. I decided I would produce as many stories as I could about PD. I interviewed neurologists and shot footage of my brother’s symptoms to show what Parkinson’s can do to a human. Greg did not mind being my “example” and he shared the personal side of the disease, beyond the tremors. He talked about his frustration, the isolation, the hopefulness and the hopelessness. I learned so much! Through my videos and published stories, we helped generate awareness of the disease and more importantly, shared information about all the support services available to people with Parkinson’s in my area.

I joined the local board and now sit on the Parkinson’s Foundation New York & New Jersey Chapter board.  Being a board member gives me direct access to those on the front lines in this battle. I like knowing what’s being accomplished all around the country. I pay attention to all the research projects and funnel the information to my brother so he can discuss them with his doctors. (I told you I was selfish — Greg comes first). 

Recently, one of my high school friends, Cindy, was diagnosed with PD. I forward information to her, too.  I also send it to my family members. The more they know about this disease, the more we can do to help Greg, Cindy, and everyone living with PD.

I have been on the Moving Day committee for close to 10 years. First, as the event emcee and now as a full-blown committee member. I run the Facebook account for the Moving Day group. I share information with local media organizations and set up interviews for Foundation officials and other people with PD to appear on local television. These are tasks I am more than capable of doing and I’m happy to share my skills. We all have some skill to offer.

Approximately 90,000 people will be diagnosed with Parkinson’s in the U.S. this year. All those people and their families will need help understanding how this disease will impact them (explore Parkinson’s Foundation resources here). We need more people to be selfish and get involved. Whether you get involved for yourself, a family member, or a friend, your selfishness might actually be the most positive character flaw you have!

Explore the many ways to volunteer with the Parkinson’s Foundation. Fill out our volunteer interest form today.

Science News

New Cell Types Identified in Parkinson’s

Parkinson's Foundation Science News blogs

New research reveals the complex changes happening in different cell types in the brain that are affected by Parkinson's and identifies a unique population of neurons.

A hallmark of Parkinson's disease (PD) is the death of brain cells called dopaminergic neurons in a part of the brain called the substantia nigra. For people with Parkinson’s, these neurons stop producing dopamine, which helps control the body's movements and moods. However, it’s not clear if other types of cells are also affected.

A new study published in Science Advances identifies a new type of neuron associated with Parkinson’s. By looking at which genes were turned on and off in hundreds of thousands of different cells in the substantia nigra, the researchers developed an “atlas of gene expression.” This research may help us better understand Parkinson’s, and possibly help guide the development of new treatments.

This study was led by the Parkinson’s Foundation 2022 Research Centers Principal Investigator Zhenyu Yue, PhD, and co-Investigators Joel Blanchard, PhD, John Crary, MD, PhD and Bin Zhang, PhD, from Icahn School of Medicine at Mount Sinai.

About the Study & Results

Neurons

The researchers studied gene expression in 315,867 cells from the substantia nigra of people who did or did not have Parkinson's. Within the samples, the researchers identified various known cell types, including different types of neurons and other brain cells.

Interestingly, the scientists found a unique group of neurons that had an activated gene called RIT2, which past studies had shown is associated with Parkinson's risk. These cells lacked markers of other common cell types in the substantia nigra, indicating that they may be a newly recognized cell population.

However, in people who had advanced Parkinson’s, RIT2 expression was decreased compared to those without Parkinson’s, suggesting that reduced RIT2 expression may play a role in the development of Parkinson's. This may also indicate that the unique population of RIT2 neurons may be more vulnerable to the disease.

The team assembled their data on gene expression to create an atlas of different populations of single cells in the substantia nigra, which can be used to explain changes associated with Parkinson’s. They found distinct patterns of changes in gene expression in the cells marked by RIT2. Moreover, the team identified pathways of cell-to-cell communication that were altered in Parkinson’s.

Research Takeaways

The researchers are hopeful that this new data will be useful in future research. For example, while many dopaminergic neurons were lost due to advanced Parkinson’s by the time these samples were collected, many survived — their atlas may eventually help reveal what makes some neurons more resilient.

They also hope that this data will help:

  • Understand pathogenic mechanisms (how Parkinson’s works)
  • Identify new therapeutic targets
  • Help find clinical biomarkers for Parkinson’s. A PD biomarker would lead to faster and more accurate diagnosis and the ability to track PD progression. Right now, there is no single biomarker for Parkinson’s.

Highlights

  • A unique group of neurons in the substantia nigra is marked by an activated gene, called RIT2, which past studies have shown is associated with Parkinson's risk. These cells did not have markers of other known cell types, indicating that they had not been previously identified.
  • In people who had advanced Parkinson’s, RIT2 gene expression was reduced, which suggests it may play a role in the development of Parkinson's. It may also mean that the unique population of RIT2 neurons may be more vulnerable to the disease.
  • Data was converted into an “atlas of gene expression” that identifies a broad range of gene expression patterns within the cells of the substantia nigra.

What does this mean?

This research is a step towards better understanding the changes that occur in the substantia nigra during Parkinson’s. Knowing that there is a new population of brain neurons tied to Parkinson’s — in addition to the well-established dopaminergic neurons ­— will provide researchers with new targets to develop different PD medications. These neurons can also lead to the development of a new biomarker, which could be a breakthrough in PD diagnosis and progression tracking.

What do these findings mean to the people with PD right now?

While this study does not impact people with PD right now, the PD community can find hope in that researchers are still discovering more about this disease, and how it works. We can only solve a puzzle if we have all the pieces, and this new piece contributes to the overall battle to beat Parkinson’s.

People who are concerned that they may be experiencing Parkinson’s symptoms should talk to a healthcare provider.

Learn More

The Parkinson’s Foundation believes in empowering the Parkinson’s community through education. Learn more about PD and the topics in this article through our below resources, or by calling our free Helpline at 1-800-4PD-INFO (1-800-473-4636) for answers to your Parkinson’s questions.

Podcasts

Episode 166: Navigating Disparities, Ethics, and Stigma in the Black Parkinson’s Community

Black and African American people diagnosed with Parkinson’s disease (PD) face disparities in healthcare access and outcomes, potentially leading to decreased access to care, resources, and research opportunities. It is crucial to recognize their unique needs and experiences so that scientists can better understand how PD impacts diverse communities. The Parkinson’s Foundation aims to identify these healthcare disparities to better serve and support the community.

In this second episode of our Black History Month special, Dr. Reversa Joseph, Neurologist, MDS at the Columbus Ohio VA, and Dr. Hiral G. Shah, Neurologist, MDS at Columbia University Medical Center, discuss current and historical disparities in research and treatment among the Black and African American PD community. They emphasize the importance of raising awareness about PD in this community, as well as in the medical space, to better understand the diverse lived experiences of the Black PD community. They also address the need to create more PD resources that reflect the voices of the community at hand.

Released: February 27, 2024

Made possible by support from Robert W. Woodruff Foundation.

Podcasts

Episode 165: Community Conversations – Re(building) Trust and Sharing Resources

Black and African American people diagnosed with Parkinson’s disease (PD) face disparities in healthcare access and outcomes, potentially leading to decreased access to care, resources, and research opportunities. It is crucial to recognize their unique needs and experiences so that scientists can better understand how PD impacts diverse communities. The Parkinson’s Foundation aims to identify these healthcare disparities to better serve and support the community.

In this first episode of our Black History Month special, Kimberly Gamble, Program Coordinator at Atrium Health, and Lance Wilson, Licensed Social Worker and Center Coordinator at Jefferson Health’s Comprehensive Parkinson’s Disease and Movement Disorders Center, share real-life examples of outreach strategies that they have used when engaging with the Black and African American community to dispel common misconceptions about research studies, and emphasize the importance of representing and showing up for your community.

Released: February 20, 2024

Made possible by support from Robert W. Woodruff Foundation.

Raise Awareness

Meet Four People Helping Us Move Toward a Cure

Group at Moving Day Walk

In 2023, Moving Day, A Walk for Parkinson’s, Parkinson’s Revolution and Parkinson’s Champions raised a record-breaking $8.8 million to advance research, improve access to care and provide life-changing resources to people with PD and their loved ones.

Meet four fundraisers and volunteers who inspire us:

Kathleen and group

Volunteering Helps Kathleen Find Community and Comfort

“I saw right away that Moving Day was more than just a walk, and I wanted to see how it changes people. I also wanted to help raise even one extra dollar for research so that the next person to get diagnosed doesn’t feel like I did. I want them to feel that there is hope.”

KEEP READING


Allie and group

Allie Takes Action Against PD Diagnosis through Parkinson’s Revolution

 “Part of my goal is pushing for a cure for Parkinson’s and making sure people are aware of it, but the other part is finding people who look like me. The Parkinson’s Revolution ride reminded me I have a long road ahead but right now, I’m fighting and feeling great.”

KEEP READING


Karan Rai running a marathon

Karan Completes Remarkable World Marathon Challenge for His Father

“One of the lessons my dad taught me early on is you’re meant to test your limits and if you’re going to do that, find a cause that’s near and dear to your heart and raise awareness and money for it.”

KEEP READING


Cornerstone Parkinson's Fit Community group

Cornerstone Parkinson’s Fit Community Combats Parkinson’s By Moving Together

“We love Moving Day. We all think the Parkinson’s Foundation is important because they have so much to offer people with Parkinson’s. When someone new comes to the gym, the first thing I tell them is to connect with the Foundation and use their resources. We are so happy we can help raise money to support the Parkinson’s Foundation.”

KEEP READING


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Raise Awareness

Research Training Tailored to Black and African American Parkinson’s Community Aims to Advance Health Equity

Group at Learning Institute

As researchers advance treatments for Parkinson’s disease (PD), there is a critical need to engage with the Parkinson’s community early and often during the research process. Populations of focus — including Black and African Americans, hispanics/latinos, women and others — are often underrepresented in, and historically excluded from, research. Engaging these communities in the development of drugs and the design of clinical trials creates an opportunity for greater representation in research. The Parkinson’s Foundation is committed to making research inclusive and creating a systemic change in the PD research space.

In September 2023, the Parkinson’s Foundation hosted a new, tailored version of its Learning Institute, which trains people with Parkinson’s and care partners in research and advocacy to work alongside scientists and government agencies in the drug development process.

Panel table at Learning Institute

Held in Atlanta, GA, in collaboration with Morehouse School of Medicine, the new training sought to engage the Black and African American Parkinson’s community (people with Parkinson’s, care partners, neurologists and professionals). During a three-day training, participants found community, learned how to confidently work alongside researchers and use their voice to advocate for changes in research.

“As a Foundation, we are actively creating programs and developing partnerships that will advance health equity for populations of focus,” said Evelyn Stevens, senior director of community engagement at the Parkinson’s Foundation. “We designed this educational and interactive training to deepen our understanding of the current needs of Black and African American people living with Parkinson's, and their care partners.”

The training included exclusive insight into the Foundation’s global genetics initiative, PD GENEration: Mapping the Future of Parkinson’s, and the opportunity to enroll and receive on-site genetic testing as part of the study. Before the training, 29% of attendees had reported participating in a research study. By the end of the Learning Institute, 100% of participants with Parkinson's had completed their first research study, PD GENEration. 

“Being part of the faculty for the Learning Institute to advance health equity in Parkinson’s care for the African American community was remarkable.”

- Reversa Joseph, MD, movement disorders specialist at Chalmers P. Wylie Veterans Outpatient Clinic

“I was honored to present on ethics in research as it was vital to empower participants with an understanding of the research process, enabling them to make informed decisions about clinical trial participation,” said Dr. Joseph. 

Ensuring diversity and inclusivity in Parkinson’s research is critical to accelerating breakthroughs toward a cure, which is why PD GENEration is designed to increase racial diversity among participants. In 2023, it announced Morehouse School of Medicine as the first historically Black institution of medicine to become a PD GENEration research site (read the article).

As of January 2024, 14.9% of PD GENEration participants are racially diverse. For perspective, U.S. clinical trials generally achieve less than 2% of diversity among participants.

“PD GENEration has established a strong relationship with the community through engagement and programs,” said Amasi Kumeh, director of research partnerships at the Parkinson’s Foundation. “We have become a gateway to research, helping recruit diverse participants for clinical trials and providing information about the process.”

The Learning Institute also emphasized community. The YMCA of Metro Atlanta, The Center for Movement Challenges, and a physical therapist from Emory University hosted a movement break for attendees, as exercise is proven to help people with PD manage symptoms. On the final afternoon, community members of Atlanta were invited to learn more about PD, get resources and meet the graduates of new class of 2023 Research Advocates.

Speaker at the Learning Institute

No Topic Off-Limits

Black and African Americans experience health disparities when navigating Parkinson’s from day one — and are more likely to be diagnosed later in the disease stage than white people. Knowing this, the event was designed to welcome open conversation. “We wanted to provide a safe space for everyone to share their experiences and learn from one another,” Evelyn said.

For the first time, roundtable discussions were hosted. Every table was assigned a PD expert, neurologist or Parkinson’s Foundation staff member to lead a PD topic — from symptom management to best ways to reach the Black and African American community and how to connect people to PD resources.

“The moment that I stepped into the conference room for my first day of training, I knew this would be a life-changing experience.”

- Vanessa Russell Palmer, a person with Parkinson’s and Learning Institute attendee

“Interacting with other African Americans with Parkinson's, neurologists that look like me and sharing our daily challenges was empowering," said Vanessa. Becoming a Parkinson's Foundation Research Advocate has provided me with a new village of support, and I feel empowered to fight this disease every day and to work to bring more information about Parkinson's research and access to care to the African American community.”

Discussing the ethics of research was central to the training, directly addressing medical mistrust and the historical mistreatment the community has experienced in research and care. “Understanding past mistakes is crucial to preventing their recurrence, and it was rewarding to highlight the oversight that is now in place to ensure ethical research practices. Discussing the root causes of medical mistrust is necessary for acknowledgment and progress, fostering a path towards informed and empowered healthcare decisions,” said Dr. Joseph.

Through this training and other initiatives, the Foundation aims to continue addressing the ethical barriers associated with research in its effort to help all people live better with Parkinson’s.

3 Ways You Can Help Improve Health Equity for People with PD

  1. Participate in research studies. Help diversify research. Before enrolling, review the informed consent form with someone on your care team and let your care team know about the barriers you may have with participating in research. Learn more about Getting Involved in Research. 
  2. Help spread Parkinson’s awareness. Follow us on social media and share stories and news that interest you. The more people know about Parkinson’s, the more they know this disease goes beyond a single demographic. When people know the early signs of Parkinson’s, the sooner they can get diagnosed and have a better quality of life.
  3. Share your story. Your story may inspire someone who has a similar experience navigating Parkinson’s disease. Submit your story now.
Boxing group at Learning Institute

Diversifying Research

Diversity in research accelerates the rate that researchers can better understand PD and drives better outcomes for the entire PD community. Research advocates return to their communities, activated and inspired to raise awareness and educate their community about the importance of taking part in clinical trials. “Diversifying research gets us one step closer in our efforts to advance treatments and find a cure for Parkinson’s disease.” said Evelyn.

Next, the Parkinson’s Foundation is working to tailor more trainings and local educational events to populations of focus. As with every Foundation event, the focus remains to ensure all people with PD and their families have what they need to manage this disease and live better with Parkinson’s.

Help spread Parkinson's awareness and register to attend a local event today. 

My PD Story

Angela and Michael Bowman
Care Partners

Angela and Michael Bowman

For better or for worse, for richer or for poorer, in sickness and in health, till death do us part! If you have ever been married, you remember those words. However, no one knows when, or if, the worst and the sickness will come.

I have been married to the love of my life for 29 years. We have had a great married life. We have experienced ups and downs like any other married couple, but I can honestly say that the years have taught us the meaning of true partnership.

We have learned how significant our roles are in our relationship. We have learned the value of what we have built, and we have learned how to love one another without overwhelming each other with unrealistic expectations. But we have now been placed in the challenge of our lives, and we are being tested like no other.

In 2019, my husband Michael was diagnosed with Parkinson’s disease (PD). The diagnosis was welcome, as I had begun seeing changes in him at least two years prior. He is a creature of habit and always has a routine, but I began to see differences in the way he walked, talked and even with his memory.

Mike didn’t have what some would consider the classic symptoms of Parkinson’s. He did not have the tremor made famous by legendary boxer, Muhammad Ali, or involuntary twitches like Michael J. Fox. Instead, Mike’s primary Parkinson’s symptom was slowness of movement and speed (called bradykinesia). He also experiences chronic stiffness that is sometimes so debilitating it renders him in a statue-like state.

After my husband was diagnosed with Parkinson’s, I made it my mission to learn as much as possible. I found out about the Parkinson’s Foundation and joined a support group, where I heard about the Learning Institute. Attending the Learning Institute was eye-opening, informative and inspirational. Mike met other men living with the disease, I met other caregivers I could relate to, and it helped us feel less alone on this journey.

Back in the day, it was uncommon for older people, especially African Americans, to seek medical attention for physical and mental needs. Now, as a Research Advocate, I can ask questions and help raise awareness for PD. I use this role to spread information about the importance of clinical research and genetic testing.

Parkinson’s is a progressive disease, and Mike’s PD has slowly progressed over the last two years. On what we call a Parkinson’s good day, Mike can get out of bed on his own, feed himself, dress himself and even drive to the store. On a Parkinson’s bad day, I must bathe him, feed him and dress him. He also experiences hallucinations, falls and dementia. These are the days when my wife hat doubles as the caregiver hat.

My husband is now living on disability, and I work a full-time job from home. It has been a blessing to be able to stay home with him because his bad Parkinson’s days are becoming more frequent. This 5’11” former Marine who has lived his life so fearlessly and unapologetically, has turned into a man that slumps over, shuffles when he walks and constantly drools. But my husband is a trooper. He believes that his condition is what it is, and he has yet to complain.

Caregiving is the ultimate gesture of providing kindness to another person. It is the ultimate sacrifice of love and commitment. In my case, it solidifies the vows that I made to my husband 29 years ago: to love and to cherish, for richer or for poorer, in sickness and in health, till death do us part. It means, “I know that you matter, and I will prove it to you.”

Everyone wants to know they matter and that their life means something. I try my best to prove it to my husband every single day. Out of everything we go through in our lives, the best thing I can do for him is let him know that his life will not go unwitnessed or unnoticed because I will witness it and notice it, always.

I do what I need to do to ensure that Mike has the best quality of life. I refuse to let Parkinson’s win. This isn’t the life I thought we would have together, but it’s the life we have been given. I am still looking forward to our days ahead, even if I don’t know what those days will look like.

Help us improve Parkinson’s research. Become a Research Advocate today.

Science News

Plastic Waste Contaminants Could Promote Parkinson’s

Parkinson's Foundation Science News blogs

A new study indicates that tiny particles of polystyrene can promote the clumping of a protein involved in Parkinson’s.

Plastic waste is a growing problem, and as plastics break down the pieces can be problematic. A new study in Science Advances suggests that tiny plastic particles may be the latest environmental contributor to Parkinson’s disease (PD).

Microplastics are defined as particles smaller than 5 millimeters in diameter — for comparison, a grain of rice is 6 millimeters— and can also include nanoplastics (less than 1 micrometer). According to past research, it is common for blood samples to contain polystyrene nanoparticles, which come from pieces of foam packing materials, cups and cutlery. Research has also shown that unlike other kinds of plastic, polystyrene nanoparticles can enter the brain.

Parkinson’s disease is diagnosed when a protein, called alpha-synuclein, begins to clump in vulnerable neurons in the brain. The clumping ultimately affects dopamine, the neurotransmitter that gets progressively lost in PD, leading to early signs of the disease. This new study shows that polystyrene nanoparticles can interact with alpha-synuclein and promote its clumping in test tubes, in brain cells grown in a petri dish, and in mice.

About the Study & Results

Nanoplastic contaminants promote alpha-synuclein clumping.

Researchers mixed alpha-synuclein “seeds” with nanoplastics in test tubes to see if the presence of nanoplastics triggered the clumping of alpha-synuclein. After three days, they observed that, when combined with alpha-synuclein seeds, the nanoplastics promoted the acceleration of alpha-synuclein clumping formations.

Nanoplastic contaminants interact with alpha-synuclein at very specific regions of the protein.

Using computer modeling, the research team predicted a strong interaction between polystyrene nanoparticles and a region of alpha-synuclein. To validate this prediction, the team created a shortened version of alpha-synuclein that lacked the region the nanoparticles were predicted to interact with. Without that part of alpha-synuclein, the nanoparticles did not stick to the protein in lab experiments, indicating that the computer model was accurate.

Nanoplastic contaminants accelerate alpha synuclein clumping in neurons.

In mouse neurons grown in a petri dish, the researchers observed that nanoplastics were internalized into a specific compartment within the cell, called the lysosome, where alpha-synuclein tends to clump. They found that the nanoplastics accelerated the accumulation of pathogenic alpha-synuclein in these cells.

Nanoplastic contaminants accelerate alpha synuclein clumping in the mouse brain.

The researchers injected alpha-synuclein seeds and nanoplastics into the brains of live mice and found that about 20% of dopaminergic neurons — those thought to be crucial in the development of Parkinson’s — internalized both. Injecting the combination into mice led to an increase in alpha-synuclein clumps in dopaminergic neurons and an increase in alpha-synuclein pathology (as measured by molecular markers) compared to injecting the seeds alone. In 3 of 10 mice injected, nanoplastics alone led to alpha-synuclein pathology.

Traces of polystyrene can be found in human brain tissues. Finally, in brain tissue samples obtained from people with Lewy body dementia, a condition characterized by the presence of alpha-synuclein aggregates, the research team identified traces of polystyrene. This discovery suggests the potential presence of plastic nanoparticles in the human brain.

Highlights

Small pieces of plastic waste on fingers
  •  Alpha-synuclein clumping was triggered and/or accelerated by nanoplastics in three different models — test tubes, brain cells grown in a petri dish and in mice brains.
  • The interaction between polystyrene nanoparticles and alpha-synuclein occurs at a specific region in the alpha-synuclein protein.
  • In brain tissue samples from people with Lewy body dementia, traces of polystyrene can be detected, suggesting that plastic nanoparticles may be present in human brains.

What does this mean?

Plastic waste may be contributing to Parkinson’s as an environmental factor. However, we do not yet know how such interactions might be happening in humans and whether the type of plastic might play a role.

What do these findings mean to the people with PD right now?

People are exposed to and consume microplastics every day, through breathing, eating foods and drinking liquids — whether they are packaged in plastic or not. Studies like this one are integral to disentangling how the effects of environmental toxicants contribute to the development of PD — we now know that polystyrene nanoparticles can make their way into the brain. Explore the environmental risk factors connected to Parkinson’s.

People who are concerned that they may be experiencing Parkinson’s symptoms should talk to a healthcare provider.

Learn More

The Parkinson’s Foundation believes in empowering the Parkinson’s community through education. Learn more about PD and the topics in this article through our below resources, or by calling our free Helpline at 1-800-4PD-INFO (1-800-473-4636) for answers to your Parkinson’s questions.

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