Science News

Elastic Abdominal Binders May Prevent Dizziness on Standing

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Wearing an elastic abdominal binder (a medical version of a girdle available in most drugstores) may help prevent low blood pressure on standing in people with Parkinson’s disease (PD), according to research published in the November 27 online edition of Movement Disorders Clinical Practice.

PT stretching a man

Many people with mid- and late-stage PD experience a sharp drop in blood pressure when standing up from a sitting position. This symptom is also common among people living with the atypical parkinsonism known as multiple system atrophy (MSA). The medical term for it is neurogenic orthostatic hypotension (nOH), and it can make a person feel dizzy, lose their balance and fall or even lose consciousness. Treating orthostatic hypotension with drugs that raise blood pressure is tricky — the medicines can prevent dizziness when standing up, but can make blood pressure too high when lying down.

Studies in people with other conditions that lead to orthostatic hypotension, including diabetes, have suggested that wearing an elastic abdominal binder — a wide elastic band that supports the stomach — helped them maintain a steady blood pressure.
Researchers led by Klaus Seppi, M.D., at the Innsbruck Medical University in Austria tested the treatment in 15 study participants who had PD and orthostatic hypotension. First, they monitored each study participant’s blood pressure during a “tilt test,” during which participants lay on a flat examining table, which is then raised to a seated position. Then participants wore either an elastic abdominal binder or a placebo binder — one that did not put pressure on the abdomen — for two hours and repeated the test. On a different day the participants switched binders and were tested again. Then all participants wore the elastic binders a few hours a day for four weeks and were assessed again.

Results

  • On average, blood pressure was about 10 mm Hg higher when participants sat up wearing the elastic abdominal binder versus the placebo binder.
  • Lying-down blood pressure remained the same no matter which binder the participants wore.
  • Using an elastic abdominal binder daily for four weeks improved symptoms of orthostatic hypotension.

What Does It Mean?

The study authors conclude that elastic abdominal binders may provide a simple tool to alleviate the troublesome PD symptom of orthostatic hypotension. For some, it may be worth trying because it involves no drugs that might interact with other PD medications, and there is no risk of raising overall blood pressure in people whose blood pressure is already generally high.  
Limitations of the study include the fact that the number of study participants was small and the study was not double blinded (participants knew which group they were in).

In addition, one side effect that remains to be investigated is the possibility that abdominal binders exacerbate varicose veins in the legs. Therefore, a larger, controlled trial will likely need to be performed before abdominal binders receive broad endorsement. In the meantime, talk with your physician to see if you might benefit from this simple tool to help manage orthostatic hypotension.

Raise Awareness

10 Interesting Facts About Parkinson's Disease

couple hugging

At the Parkinson’s Foundation, one of our goals is to raise Parkinson’s disease (PD) awareness and how the Foundation supports those living with the disease and their loved ones. If you are familiar with Parkinson’s you probably know most of the items on this list, but we encourage you to share this article with someone who may not be familiar.

1. The cause is unknown and there is no cure.

What causes Parkinson’s remains largely unknown. Genetics cause about 10 to 15 percent of all Parkinson's. The other 85 to 90 percent of cases are classified as sporadic (or occasional). Although there is no cure, treatment options vary and include medications and surgery.

→ Keep reading: What is Parkinson’s

2. People with Parkinson’s can have a good quality life.

There is no one-size-fits-all treatment approach when it comes to PD. While medication is the most common treatment, surgical therapy and lifestyle modifications, like rest and exercise, help manage the disease. Shop around until you find what works best. Find your ideal support group, therapist, exercise class and complementary therapy.

→ Keep reading: Find resources in your area

3. No two people have the same exact symptoms.

The progression of symptoms is often a bit different from one person to another due to the diversity of the disease. People with PD may experience: tremor (mainly at rest); slowness of movements (bradykinesia); limb rigidity; gait and balance problems.

→ Keep reading: Managing Parkinson’s

4. Non-movement symptoms can be more troublesome than motor symptoms.

In addition to movement symptoms, from tremor to balance issues, most people with PD also develop non-movement symptoms that many consider more disabling. They can include:

→ Keep reading: Non-Movement Symptoms

5. Small Handwriting and loss of smell are early signs of Parkinson’s.

A change in handwriting, specifically handwriting that’s gotten smaller over time or crowded, are an early indicator of PD. Another common early sign is the loss of smell of foods like bananas, dill pickles and licorice.

→ Keep reading: 10 Early Signs of Parkinson’s Disease

6. Exercise helps manage Parkinson’s symptoms.

For people with Parkinson’s, exercise is more than healthy — it is a vital component to maintaining balance, mobility and activities of daily living. Exercise and physical activity can improve many PD symptoms. The Parkinson’s Outcomes Project shows that people with PD who start exercising earlier and a minimum of 2.5 hours a week experience a slowed decline in quality of life compared to those who start later. Tai chi, yoga, Pilates, dance, weight training, non-contact boxing and more all have positive effects on PD symptoms. Watch our Fitness Friday videos.

→ Keep reading: Exercise

7. Parkinson’s should be treated through a team approach.

The Parkinson’s Foundation recommends people diagnosed with PD seek out a movement disorders specialist. These specialists are more likely to include other healthcare professionals who can help tackle day-to-day PD challenges in a care team, such as physical therapists, occupational therapists, speech therapists or nutritionists.

→ Keep reading: Importance of Expert Care

8. People with Parkinson’s are not always angry or sad.

Many people with Parkinson’s experience facial masking — reduced facial expression. Often, people with PD look serious, depressed or mad, but many times it’s just that PD is causing muscles in the face to be stiff or take a long time to move.

→ Keep reading: Facial Masking

9. Designated Centers treat Parkinson’s. 

The Parkinson's Foundation leads the development of new treatments through its Centers of Excellence network, comprised of 47 international leading medical centers, staffed by renowned PD specialists. These centers deliver care to more than 193,000 people with Parkinson’s. Participating centers also play a key role in the Foundation’s Parkinson’s Outcomes Projectthe largest clinical study of Parkinson’s ever conducted.

→ Keep reading: Centers of Excellence

10. The Parkinson’s community is strong. 

The Parkinson’s Foundation is here for our global Parkinson’s community — that includes family members and caregivers. The Foundation hosts Moving Day walks across the nation and also provides additional ways to get involved — donatevolunteerhost a fundraiser, join PD Conversations or advocate.

→ Keep reading: Get Involved

We’re here for you. Get answers to your Parkinson’s questions when you contact our Helpline at 1-800-4PD-INFO (473-4636) or Helpline@Parkinson.org.

Science News

How Common is Cognitive Decline in Parkinson's?

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A new study finds that cognitive impairment is a frequent and rapidly progressing symptom of Parkinson’s disease (PD). About half of the participants who had PD for an average of five years and had normal cognition at the beginning of the study developed mild cognitive impairment (MCI) within six years – about 11 years after PD diagnosis. Those few who developed MCI progressed to dementia within five more years. The results appear in the September 11 online edition of Neurology.

With a diagnosis of PD, most people and their physicians focus on treating and coping with movement symptoms. Yet even early in the course of disease, people with PD may have difficulty multitasking, or feel that their thinking abilities are “just not the same.”

To better understand the rate at which cognitive impairment develops, and identify risk factors for the development of cognitive impairment, researchers led by Daniel Weintraub, M.D., recruited 141 people with PD to participate in the study. All were receiving treatment at the University of Pennsylvania’s Udall Center for Parkinson’s Disease Research. On average they were 69 years old and had been living with PD for five years; 63 percent were men. All participants had normal cognition based on a battery of standard tests for people with PD. The researchers re-evaluated study participants’ cognition each year for up to six years.

Results

  • With each year of follow-up, a greater percentage of participants had progressed to MCI, reaching 47.4 percent after six years.
  • Every participant who was diagnosed with MCI during the study, progressed to dementia within five years.
  • Men were at an increased risk of cognitive impairment as were those who had higher scores on rating scales of PD motor symptoms (higher Hoehn and Yahr and UPDRS scores), a longer time living with PD and depression.

What Does It Mean?

Many people live with PD for decades with good cognitive abilities. However, this study adds to a growing body of literature that identifies cognitive impairment as a common non-motor symptom of PD. This study is also among the first to enroll a group of participants with normal cognition and to follow the progression of their cognitive difficulties over time. Compared to other studies, this one found a more rapid rate of cognitive decline among participants.

A better understanding of how PD affects cognition can help people with PD in several ways. With testing for these difficulties early in the course of disease, more people could potentially benefit from rivastigmine (Exelon®) – the only medication approved for dementia in PD.

In addition, the study results underscore the need for better therapies to slow or stop MCI, and PD progression more generally. Most PD clinical trials focus on the motor symptoms, and this study (and others) highlight the urgent need for studies focusing on interventions to slow down the rate of cognitive changes in PD. Additionally, evaluating cognition early in the course of PD could give people the opportunity to participate in clinicaltrials. Increased awareness of MCI also can help guide people in making better informed decisions about their future care.

Experts caution that PD symptoms such as depression and apathy can affect a person’s memory and ability to focus their thinking; it is important to treat these symptoms before evaluating cognition.

A shortcoming of the study is that the participants were all so similar — nearly all were Caucasian, with a high education level (16 years on average) and in a narrow age range (62-73 years). For this reason, the results may not reflect the reality in the larger population of people with PD, in which studies suggest that age is the biggest risk factor for dementia. Studies with larger numbers of participants are needed to confirm the results. One such study, which is following 8,000 people with PD at 20 different centers, already is under way.

Advancing Research

One Year Later: Catching up With Parkinson's Foundation Research Grantee Amy W. Amara, MD, PhD

Woman laying in bed restless while husband sleeps next to her

One year after the Parkinson’s Foundation awarded $500,000 in research grants to address critical unmet needs in Parkinson’s disease (PD), we check in with one of three of the researchers making a difference right now. 

Researchers were tasked with jumpstarting practical solutions to ease difficulties related to cognition, fatigue and sleep, all debilitating yet under-recognized symptoms in Parkinson’s. They have each received a grant funded through the Parkinson’s Foundation Community Choice Research Awards, the first program to set research priorities based on the insights of people living with Parkinson’s.

Amy W. Amara, MD, PhD, received a research grant to study "Impact of Exercise on Executive Function and Sleep" at the University of Alabama at Birmingham.

Advancing Research

One Year Later: Catching up With Parkinson's Foundation Research Grantee Hengyi Rao, PhD

Woman talking with medical professional

One year after the Parkinson’s Foundation awarded $500,000 in research grants to address critical unmet needs in Parkinson’s disease (PD), we check in with one of three of the researchers making a difference right now. 

Researchers were tasked with jumpstarting practical solutions to ease difficulties related to cognition, fatigue and sleep, all debilitating yet under-recognized symptoms in Parkinson’s. They have each received a grant funded through the Parkinson’s Foundation Community Choice Research Awards, the first program to set research priorities based on the insights of people living with Parkinson’s.

Hengyi Rao, PhD, recieved a research grant to study "Using Brain Imaging to track Fatigue in Parkinson's Disease" at The University of Pennsylvania, a Parkinson’s Foundation Center of Excellence.

Advancing Research

Intimacy Issues and Parkinson’s Disease 101

A couple in bed

Warning: This article contains adult-themed issues and terms.

Every year, the top Parkinson’s experts from around the world who treat people with Parkinson’s at a Parkinson’s Foundation-designated Center of Excellence (a department or clinic within a hospital that specializes in PD) convene to discuss the latest Parkinson’s research and treatments. This article summarizes the 2018 Center Leadership Conference presentation on sexual disfunction by Gila Bronner, MPH, MSW, CST, Director of Sex Therapy at the SHEBA Medical Center in Israel. Read the articles covering some of the other topics discussed: new therapies in trialoral health and music therapy

Jessica made an appointment with Gila Bronner, MPH, MSW, CST, a sex therapist, to discuss a specific issue: how could she address her husband’s drooling interfering with their sex life. Even though her husband was the one living with Parkinson’s disease (PD), some symptoms affected the both of them.

Intimacy issues and sexual dysfunction is a “couple problem.” It affects both partners. One person’s sexual dysfunction often results in the same effect in their partner. For example, when a man experiences a sexual dysfunction, his partner is more likely to experience sexual dysfunction and dissatisfaction as well.

There is a high prevalence of sexual dysfunction in PD, with problems ranging from erectile dysfunction, reduced desire and frequency, vaginal dryness, orgasm difficulties and more. According to one study, people with PD rate sexual dysfunction in their top 12 most bothersome symptoms (Politis, et al., 2010). Another study cites that 41.9 percent of men and 28.2 percent of women cease sexual activity after being diagnosed with PD (Bronner, et al. 2004).

Sexual dysfunction in PD can be compounded by depressionanxiety, pain and movement-related symptoms, which can affect desire, erectile dysfunction and sexual satisfaction. Sexual dissatisfaction has been associated with movement symptoms in men, anxiety in women and depression in both genders.

As a sex therapist, Gila reminds her patients that it is important to remember that sexuality is not only about sex and orgasms; its emotional, non-sexual physical and intimate aspects play important parts. Intimate touch and sexual activity contribute to a better quality of life and health overall. They are associated with emotional and physical relaxation, better self-esteem, increased vitality and well-being, and closeness between partners.

The increase in oxytocin that comes from massage and touch can even reduce pain. Older people who continue to engage in sexual activity have better overall cognitive functioning (Hartmans, et al. 2014). Therapeutic touch has even been shown to decrease behavioral symptoms of dementia (Woods, et al. 2005).

There are many alternative intimate and sexual activities to treat sexual dysfunction, such as outercourse (other sexual activities besides sex), self-stimulation, non-demanding touch (relaxing and pleasant touch), open sexual communication, compensatory strategies and sexual aids, and erotic thoughts and fantasies.

Intimacy Tips from People with PD and Their Partners

  1. Plan sex for when movement symptoms are at a minimum.
  2. Apply oily lubricants to lessen the effects of tremor on skin.
  3. Use sexual aids.
  4. Plan positions in advance with minimized movements between positions.
  5. Use lubricants for penetration during intercourse, and be sure to read the lubricant’s instructions before you begin.
  6. Use satin sheets to ease movement.
  7. Perform intimacy training and erotic tasks.
  8. Reduce stress and burden on your partner.

“Remember that the right to share love, touch and intimate moments accompanies us along our life,” said Gila.

For more information about sex therapy or where to find a sex therapist near you, contact the Parkinson’s Foundation free Helpline at 1-800-4PD-INFO (473-4636) or Helpline@Parkinson.org.

Raise Awareness

Feel the Rhythm: Music Therapy and Parkinson's Disease

Group of people singing

Every year, the top Parkinson’s experts from around the world who treat people with Parkinson’s at a Parkinson’s Foundation-designated Center of Excellence (a department or clinic within a hospital that specializes in PD) convene to discuss the latest Parkinson’s research and treatments. This article summarizes the 2018 Center Leadership Conference presentation on music therapy led by Concetta M. Tomaino, DA, LCAT, MT-BC, Executive Director and Co-Founder of the Institute for Music and Neurologic Function in New York City. Read the articles covering some of the other topics discussed: intimacy issuesnew therapies in trial and oral health.

Music therapists are professionals who are academically trained and board certified to improve the everyday lives of their patients. More specifically, when people with Parkinson’s disease (PD) work with a music therapist they see improvements in movement symptomsspeech, cognitive issues and mental health. Through dance programs, choirs and drumming programs, music therapy helps people with PD maintain function, express creativity and experience a better quality of life.

Music therapy can help someone with PD with:

  • Balance: Stride length, posture and side-to-side movement can improve with music therapy.
  • Communication: Singing can increase volume and articulation, as well as swallowing function. Humming exercises can relax tense vocal folds.
  • Cognition: Singing lyrics can improve memory issues. Music-based cues can help with recall, recognition and attention span.
  • Mental Health: People with PD often experience anxiety, fatigue, sleep problems, depression and more. Music allows for self-expression and self-discovery that can combat these feelings.
  • Social Isolation: Music therapy, particularly group activities, allow for building connections with others, which can help with isolation.

What does a Parkinson’s music therapy class consist of? Led by a music therapist, a group class generally begins with a vocal warm-up that can be accompanied with drumming or hand instruments. While each class varies, they can include singing songs while following lyrics displayed on a large screen, singing familiar songs to motivate participants and jog memories, and singing exercises. Music therapy can also include dancing or seated exercises that help people with PD maintain range of motion, endurance, strength, coordination and balance.

Music therapy uses rhythm, melody and preferred movement to address issues that commonly affect people with PD, such as bradykinesia (a slowness of movement that can lead to difficulties with activities of daily living).

Why is rhythm so effective? Rhythm becomes a template for organizing a series of movements, as well as combat cognitive issues that affect movement function, such as attention and focus. Rhythm helps coordinate movement, stimulate attention spans and induce relaxation.

As long as participants can feel the beat, music therapy can help lead to better outcomes in physical exercise programs. Sometimes finding that is a challenge, but a music therapist can work to find a rhythmic pattern or musical style that resounds with you — making music therapy both effective and enjoyable.

For more information about music therapy or where to find a music therapist near you, contact the Parkinson’s Foundation Helpline at 1-800-4PD-INFO (473-4636) or Helpline@Parkinson.org.

Tips for Daily Living

The Basics of Oral Health and Parkinson’s

Man brushing his teeth

Every year, the top Parkinson’s experts from around the world who treat people with Parkinson’s at a Parkinson’s Foundation-designated Center of Excellence (a department or clinic within a hospital that specializes in PD) convene to discuss the latest Parkinson’s research and treatments. This article summarizes the 2018 Center Leadership Conference presentation on oral health by neuroscientist Cameron Jeter, PhD, The University of Texas Health Science Center at Houston; speech-language pathologist Linsey Heidrick, MA, CCC-SLP, University of Kansas Medical Center; geriatric dentist Marsha Pyle, DDS, University of Missouri-Kansas City; and moderator Irene Litvan, MD, UC San Diego School of Medicine. Read the articles covering some of the other topics discussed: intimacy issuesart therapynew therapies in trial and music therapy

Maintaining oral health is important for people with Parkinson’s disease (PD). Parkinson’s symptoms can easily complicate dental care. A panel of PD experts at a Parkinson’s Foundation conference recently discussed oral health and saliva management – two PD-related issues not discussed often enough.

When it comes to Parkinson’s and oral health, the goals are to preserve dental health and minimize the negative impact disease treatment may have. People with PD commonly experience problems related to the four “dreaded D’s” of oral health:

  • Dry mouth
  • Drooling
  • Dysphagia (difficulty swallowing)
  • Deadly oral bacteria

Why are these conditions dreaded? Beyond the discomfort and inconvenience, they impact quality of life and can even have the potential to create life-threatening situations for people with PD.

While many people think drooling is caused by excess saliva, in PD it is actually attributed to dysphagia. When severe, drooling can be an indicator of serious problems swallowing, which can cause people to choke on foods and liquids. In extreme cases, it can lead to aspiration pneumonia — the leading cause of death for people with PD.

Oral health problems arise directly and indirectly from the progression of PD. For example, people with PD often have dry mouth, which can be caused by the disease process or medication side effects.

Movement-related symptoms also present a challenge in PD oral care. Tremors can interfere with brushing and flossing. These problems can be compounded by depression or cognitive changes when some people’s ability and willingness to engage in routine dental care decreases. Then, as people have tooth and gum loss, their ability to chew well also decreases.

However, there are ways people with Parkinson’s can maintain oral health. These 11 tips from the experts can help with oral health and swallowing problems:

  1. Engage in frequent and thorough oral care. Be sure to brush right after every meal.
  2. Stay hydrated.
  3. Eat and drink in an upright position.
  4. Take small bites and sips.
  5. Avoid talking when eating.
  6. After eating a meal or snack, check the inside of cheeks for any food pocketing.
  7. Consider a special toothbrush (www.colliscurve.com) or adaptive grip aids to make toothbrushing easier. If you prefer an electric toothbrush, be sure it is an oscillating, rotating power toothbrush.
  8. If you experience dry mouth, try over-the-counter remedies. The ideal product will be sugar-free, have preventative qualities, be easy to apply and have a pleasant taste.
  9. Avoid products that include alcohol; they make dry mouth conditions worse.
  10. Your doctor or dentist can recommend special products like toothpaste and gels that can help with dry mouth and other oral health problems.
  11. Have your oral health providers work collaboratively with your other healthcare providers to improve oral health-based quality of life.

Visit our Dental Health page to learn more about Tips for Preventing Dental Problems and Treating Dental Issues.

Advancing Research

What’s Hot in PD? Tips for the Diagnosis and Treatment of Dizziness, Vertigo and Parkinson’s Disease

Woman sitting on bed holding head because she's feeling dizzy

Though dizziness and vertigo have been commonly reported in the setting of Parkinson’s disease (PD), the diagnosis may be missed and treatment may not be optimal. The terms dizziness and vertigo can be defined in many ways. Most experts agree that the terms refer to a sensation of spinning or whirling and that the sensation has been frequently associated with balance problems. The Parkinson’s Foundation 1-800-4PD-INFO (473-4636) Helpline and PD Conversations have received many questions on the topic of dizziness, vertigo and Parkinson’s disease. In this month’s What’s Hot in PD? column, I will review the topic and summarize the most common management strategies.

Van Wenson and colleagues recently analyzed a consecutive cohort of Parkinson’s disease patients. There were 305 patients and 49% complained of dizziness. Of these cases, 38% had orthostatic hypotension and 8% had benign paroxysmal positional vertigo. There were another 3% suffering from a less classical type of benign paroxysmal positional vertigo. The prevalence of benign paroxysmal positional vertigo in Parkinson’s patients was 5.3% and over 90% of cases improved with treatment (Van Wenson, 2013).

Common Causes and Tips to Cope with Dizziness and Vertigo in PD:

  • Orthostatic hypotension: a change in blood pressure when changing position from sitting to standing or from lying to sitting or standing. This condition is treated with hydration (6-8 glasses of water a day), compression stockings, adding salt to the diet and possibly by medications such as Florinef, Midodrine, Droxidopa, or Mestinon. Orthostatic hypotension, which can also be associated with syncope or “passing out,” is the most commonly overlooked cause of dizziness in Parkinson’s disease patients.
  • Medication-induced dizziness or vertigo: the most common drugs associated with dizziness or vertigo in PD are dopamine agonists. Medication-induced dizziness is typically treated by weaning the dosage and by slowly discontinuing the offending drug(s). Common drugs associated with dizziness include anticonvulsants, antihypertensives, antibiotics, antidepressants, antipsychotics, pain medications and anti-inflammatory drugs.
  • Deep Brain Stimulation (DBS): this surgical procedure can be associated with dizziness or vertigo. The issue usually emerges soon after surgical implantation. It is important to determine if the dizziness is present with the device activated or when the device is in the off position. The first step is to turn off the device and to observe and document if the sensation resolves. If the dizziness resolves, then check the location of the electrode in the brain and consider re-programming the device.
  • Benign Paroxysmal Positional Vertigo (BPPV) can be diagnosed using examination maneuvers such as the Dix-Hallpike maneuver. A common complaint of BPPV is dizziness when turning in bed or dizziness lasting only a few seconds. Referral to a physical therapist who is an expert in vestibular rehabilitation can be helpful. Alternatively, teaching the patient to use a maneuver such as the Semont maneuver can be a reasonable approach.
  • Migraine headaches: dizziness or vertigo can sometimes be the effect of migraine headaches. In most cases, treatment of the headache can resolve the dizziness. Some experts refer to this entity as migraine-induced vertigo.
  • Transient ischemic attack or stroke: sudden onset of dizziness, usually in the presence of other neurological signs, could possibly be a transient ischemic attack or stroke. If a stroke is suspected, you should seek medical attention immediately and undergo appropriate imaging and potentially stroke-related therapies.

Selected References:

Michael S. Okun, National Medical Advisor
  1. Van Wensen E, van Leeuwen RB, van der Zaag-Loonen HJ, Masius-Olthof S, Bloem BR. Benign paroxysmal positional vertigo in Parkinson's disease. Parkinsonism Relat Disord. 2013 Dec;19(12):1110-2. doi: 10.1016/j.parkreldis.2013.07.024. Epub 2013 Aug 13. PubMed PMID: 23948517.

  2. Zeigelboim BS, Klagenberg KF, Teive HA, Munhoz RP, Martins-Bassetto J. Vestibular rehabilitation: clinical benefits to patients with Parkinson's disease. Arq Neuropsiquiatr. 2009 Jun;67(2A):219-23. PubMed PMID: 19547812.

You can find out more about our National Medical Director, Dr. Michael S. Okun, by also visiting the Center of Excellence, University of Florida Health Center for Movement Disorders and Neurorestoration. Dr. Okun is also the author of the Amazon #1 Parkinson's Best Seller 10 Secrets to a Happier Life and 10 Breakthrough Therapies for Parkinson's Disease.

Advancing Research

What's Hot in PD? Can Camicinal Improve Gastric Emptying and Absorption of Medications in Parkinson’s Disease?

Gas colon

Many people with Parkinson’s disease (PD) struggle with gastrointestinal issues. More specifically, the movements of the digestive system (known as gastrointestinal motility).

Evidence from recent studies has strongly suggested a link between the gastrointestinal system and Parkinson’s. An important next step for the field is to examine potential gastrointestinal treatments. In this month’s What’s Hot we will examine a recent randomized study of a medication that assists with moving things along in the stomach and intestines (known as a promotility drug) administered to people with Parkinson’s.

First, let’s review recent Parkinson’s-related gastrointestinal studies. Pathological studies by Braak and colleagues raised the idea that pre-motor Parkinson’s may start in the intestines. Recently, several researchers observed alpha synuclein containing Lewy bodies in the gut of people with Parkinson’s.

Currently, the only Food and Drug Administration (FDA) approved drug for gastric motility issues is metoclopramide (Reglan). Metoclopramide blocks dopamine and unfortunately makes Parkinson’s symptoms worse. We tell Parkinson’s patients to avoid metoclopramide. Another alternative is domperidone (Motilium). However, domperidone is not FDA approved or available in the U.S. It blocks dopamine, but does not enter the brain and is considered safe for people with Parkinson’s. Domperidone is available in most countries.

Another researcher, Marrinan and colleagues, recently published a randomized double-blind placebo controlled trial (this type of trial is known as the “gold standard” of clinical research) of a new gastric promotility medication called camicinal (GSK962040). Camicinal works in the gut as a motilin agonist (a drug that attaches to the same receptor as a natural chemical and causes the same effect).

Motilin is a hormone that stimulates the intestines. It is produced from cells in the small intestine. Motilin drugs stimulate the motilin receptor and lead to release of the hormone.

Researchers recently hypothesized that the new medication camicinal could improve delayed stomach emptying and help the body absorb PD medications. Thirty-eight people with Parkinson’s enrolled in the study. A randomized group received 50 mg of camicinal each day, while others received a placebo. The study was conducted over seven to nine days. The study found that medication “off” time was improved by more than two hours in the camicinal group that also experienced faster absorption. When compared to the placebo group, the camicinal group also saw an improvement according to the MDS-UPDRS (a scale used to measure the multiple aspects of PD).

Though this study was small and of short duration, its results highlight the potential for a new approach to gastrointestinal issues common in Parkinson’s. Camicinal has recently completed a trial for diabetic gastroparesis (ClinicalTrials.gov) and the results should help inform the research for people with Parkinson’s who have similar issues.

Other gastrointestinal therapies that people with Parkinson’s should keep an eye on include the 5-HT4 receptor agonists (e.g. velusetrag) and ghrelin agonists (e.g. relamorelin). Please keep in mind that camicinal is not FDA approved. However, we should remain hopeful that a larger and more in-depth study of camicinal (and similar compounds) could potentially bring great benefit to the Parkinson’s community.

Selected Reference:

Michael S. Okun, National Medical Advisor

Marrinan SL, Otiker T, Vasist LS, Gibson RA, Sarai BK, Barton ME, Richards DB, Hellström PM, Nyholm D, Dukes GE, Burn DJ. A randomized, double-blind, placebo-controlled trial of camicinal in Parkinson's disease. Mov Disord. 2017 Dec 26. doi: 10.1002/mds.27259. [Epub ahead of print] PubMed PMID: 29278279.

Barboza JL, Okun MS, Moshiree B. The treatment of gastroparesis, constipation and small intestinal bacterial overgrowth syndrome in patients with Parkinson's disease. Expert Opin Pharmacother. 2015;16(16):2449-64. doi: 10.1517/14656566.2015.1086747. Epub 2015 Sep 16. Review. PubMed PMID: 26374094.

You can find out more about our National Medical Director Dr. Michael S. Okun by visiting the Center of Excellence University of Florida Health Center for Movement Disorders and Neurorestoration. Dr. Okun is also the author of the Amazon #1 Parkinson's Best Seller 10 Secrets to a Happier Life.

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