Breaking News
November 19, 2018 - Changes in Risk Indicators of MetS Severity Tied to T2DM Risk
November 19, 2018 - ‘Game-changing’ skin sensor could improve life for a million hydrocephalus patients
November 19, 2018 - Alcohol ads on social media sites with pro-drinking comments increase desire to drink
November 19, 2018 - Neural networks could replace marker genes in RNA sequencing
November 19, 2018 - Obese adolescents feel less food enjoyment than those with normal weight, study reveals
November 18, 2018 - Goodbye ‘Gluten-Free’? Celiac Disease Vaccine May Make It Possible
November 18, 2018 - Skin ages when the main cells in the dermis lose their identity and function
November 18, 2018 - Rainforest vine compound makes pancreatic cancer cells susceptible to nutrient starvation
November 18, 2018 - A new mechanism in the control of inflammation
November 18, 2018 - Age-related decline in abstract reasoning ability predicts depressive symptoms over time
November 18, 2018 - Scientists succeed in increasing stability, biocompatibility of light-transducing nanoparticles
November 18, 2018 - Sugar, a ‘sweet’ tool to understand brain injuries
November 18, 2018 - Pharmacist-Led Effort Cuts Inappropriate Rx in Older Adults
November 18, 2018 - Novel discovery could lead to new cancer, autoimmune disease therapy
November 18, 2018 - AHA and ADA launch new initiative to help people with type 2 diabetes reduce heart disease risk
November 18, 2018 - Balanced production of pro and anti-inflammatory cytokines at two years of age protects against malaria
November 18, 2018 - New pharmacological agent shows promise for prevention of heart rhythm disorders
November 18, 2018 - All That Social Media May Boost Loneliness, Not Banish It
November 18, 2018 - Scientists shine new light on link between obesity and cancer
November 18, 2018 - Risk factors for cardiovascular disease closely track with changes in diet patterns
November 18, 2018 - Biogen Scoops Sixth Prix Galien Award with UK Win for Life-Changing Rare Disease Medicine
November 18, 2018 - Detectable HIV-1 in treated human liver cells found to be inert
November 18, 2018 - Using light to control crucial step in embryonic development
November 18, 2018 - Unusual case of father-to-son HIV transmission reported
November 18, 2018 - FDA Approves Aemcolo (rifamycin) to Treat Travelers’ Diarrhea
November 18, 2018 - Poverty blamed on widening north-south gap in young adult deaths in England
November 18, 2018 - Progress in meningitis lags far behind other vaccine-preventable diseases, analysis shows
November 18, 2018 - Consensus Statement Issued on Management of Foot, Ankle Gout
November 18, 2018 - Fine particle air pollution is a public health emergency hiding in plain sight
November 18, 2018 - In-hospital mortality higher among patients with drug-resistant infections
November 17, 2018 - Research shines new, explanatory light on link between obesity and cancer
November 17, 2018 - FIND explores new diagnostic assays for confirmatory HCV diagnosis in community settings
November 17, 2018 - Tracking Preemies’ Head Size May Yield IQ Clues
November 17, 2018 - Scientists call for unified standards in 3-D genome and epigenetic data
November 17, 2018 - Lab Innovations 2018 has beaten all records by attracting 3,113 attendees
November 17, 2018 - New strategy to hinder emergence of antimicrobial-resistant pathogens
November 17, 2018 - Sexuality education before age 18 may reduce risk of sexual assault in college
November 17, 2018 - Reducing cellular proliferation could help deplete HIV reservoir and lead to a functional cure
November 17, 2018 - New model of FSHD could be useful to study effectiveness of experimental therapeutics
November 17, 2018 - FDA approves antibacterial drug to treat travelers’ diarrhea
November 17, 2018 - Lab Innovations 2018 confirmed as a major hit with visitors, exhibitors and speakers
November 17, 2018 - Largest parasitic worm genetic study hatches novel treatment possibilities
November 17, 2018 - UCLA biologists uncover how head injuries can lead to serious brain disorders
November 17, 2018 - Static and dynamic physical activities offer varying protection against heart disease
November 17, 2018 - Obesity significantly increases risk of Type 2 diabetes and coronary artery disease
November 17, 2018 - New method to analyze cell membrane complexes could revolutionize the way we study diseases
November 17, 2018 - Researchers show how proteins interact in hypoxic conditions to facilitate mitochondrial fission
November 17, 2018 - People with rare cancers can benefit from genomic profiling, shows research
November 17, 2018 - NIH awards over $1.8 million to husband-and-wife doctors to test new breast cancer approach
November 17, 2018 - Four-in-one antibody used to fight flu shows promise in mice
November 17, 2018 - New approach allows pathogens to be starved by blocking important enzymes
November 17, 2018 - Higher body mass index could cause depression even without health problems
November 17, 2018 - Protein which plays role in sensing cell damage serves as new target to treat pulmonary hypertension
November 17, 2018 - FDA Approves Adcetris (brentuximab vedotin) in Combination with Chemotherapy for Adults with Previously Untreated Systemic Anaplastic Large Cell Lymphoma or Other CD30-Expressing Peripheral T-Cell Lymphomas
November 17, 2018 - ID specialist input improves outcomes for outpatient parenteral antimicrobial therapy
November 17, 2018 - UT Southwestern scientists selected to receive 2019 Edith and Peter O’Donnell Awards
November 17, 2018 - New clinical algorithm to help individuals manage type 2 diabetes when fasting during Ramadan
November 17, 2018 - Researchers identify LZTR1 as evolutionarily conserved component of RAS pathway
November 17, 2018 - Heart Disease Leading Cause of Death in Low-Income Counties
November 17, 2018 - Estrogen Levels Test: MedlinePlus Lab Test Information
November 17, 2018 - Research reveals link between immunity, diabetes
November 17, 2018 - Research shows how to achieve improved smoking cessation outcomes within California’s Medicaid population
November 17, 2018 - New study finds less understanding and implementation of patient engagement
November 17, 2018 - New shoe insole technology could help diabetic ulcers heal better while walking
November 17, 2018 - New method to extend cell division and immortalization of avian-derived cells
November 17, 2018 - Australian Academy of Science urges parents to vaccinate children against meningococcal disease
November 17, 2018 - Hot water treatment may help improve inflammation and metabolism in sedentary people
November 17, 2018 - Researchers produce 3D chemical maps of small biological samples
November 17, 2018 - Must Blood Pressure Rise Wth Age? Remote Tribes Hold Clues
November 17, 2018 - Noonan Syndrome
November 17, 2018 - Interventions to delay and prevent type 2 diabetes are underused, researchers say
November 17, 2018 - Hackathon prize winner seeks to remotely monitor patient skin conditions
November 17, 2018 - Research team identifies Ashkenazi Jewish founder mutation for Leigh syndrome
November 17, 2018 - Gene editing could be used to halt kidney disease in patients with Joubert syndrome
November 17, 2018 - Study uncovers link between gut disruption and aging
November 17, 2018 - Teens more likely to pick up smoking after exposure from friends and family
November 17, 2018 - Nicoya designate the Institute for Stem Cell Biology and Regenerative Medicine as the OpenSPR Centre of Excellence
November 17, 2018 - new horizon in dental, oral and craniofacial research
November 17, 2018 - How does poor air quality affect your health?
November 17, 2018 - New device can regulate children’s blood glucose more like natural pancreas
ADHD may increase risk of Parkinson’s disease and similar disorders

ADHD may increase risk of Parkinson’s disease and similar disorders

image_pdfDownload PDFimage_print
Could ADHD be a key to identifying future risk of Parkinson’s and Parkinson-like diseases? Credit: University of Utah Health

While about 11 percent of children (4-17 years old) nationwide have been diagnosed with attention-deficit hyperactivity disorder (ADHD), the long-term health effects of having ADHD and of common ADHD medications remains understudied. Researchers at University of Utah Health found that ADHD patients had an increased risk of developing Parkinson’s and Parkinson-like diseases than individuals with no ADHD history. The results are available online on September 12 in the journal Neuropsychopharmacology.

“Parkinson’s disease is commonly thought of as a neurodegenerative disease associated with aging,” said Glen Hanson, D.D.S., Ph.D., professor of Pharmacology and Toxicology and School of Dentistry at U of U Health and senior author on the paper. “This may be the first time where a childhood disease and its treatment may be linked to a geriatric expression of neurodegenerative disorder.”

In a retrospective, population-based study, Hanson’s team found ADHD patients were more than twice as likely to develop early onset (21-66 years old) Parkinson’s and Parkinson-like diseases compared to non-ADHD individuals of the same gender and age. The estimated risk was six to eight-times higher for ADHD patients prescribed the stimulant medications, including methylphenidate (Ritalin, Concerta, Daytrana, Metadate and Methylin), mixed amphetamine salts (Adderall) and dexmethylphenidate (Focalin).

“If we were to follow 100,000 adults over time, in one year we would expect 1 to 2 people will develop Parkinson’s disease before age 50,” said Karen Curtin, Ph.D., associate professor in Internal Medicine at U of U Health and first author on the study. “If we were to follow 100,000 adults prescribed treatment for ADHD over time, we estimate that over a year 8 to 9 patients will develop Parkinson’s disease before age 50.”

The authors caution that patients with a more severe type of ADHD may inherently be at an increased risk of motor neuron diseases like Parkinson’s, and the results may or may not be a direct result of the stimulant medication. Future studies are needed to reach a more definitive conclusion.

“The jury is still out,” Curtin said. “The increased risk we observed in people could be linked to having ADHD itself or perhaps a more severe form of ADHD, which may be more likely to be treated with medications.”

ADHD is a brain disorder associated with changes in the release of dopamine, which regulates the emotional response. Parkinson’s disease is a progressive nervous system disorder associated with tremors, stiffness and slowing of movement. Typically Parkinson’s does not develop until age 60 or later.

The team used the Utah Population Database (UPDB), which contains vital and medical records of more than 11 million individuals who have lived in the state, to examine twenty years of historic records. Eligible patients were born between 1950?1992, were at least 20-years old by the end of 2011, were residents of Utah after January 1, 1996 and had no prior diagnosis of Parkinson’s or Parkinson-like diseases.

Using the UPDB, Hanson and his team compiled an ADHD population, consisting of 31,769 patients, of which 4,960 were prescribed stimulant medications (2,716 received amphetamine salts, 1,941 received methylphenidate and 303 received both). The non-ADHD comparison population consisted of 158,790 individuals who were matched to the ADHD group on gender and age (5 to 1).

In addition to accounting for differences in gender and age, the study controlled for the effects of psychotic disorders and tobacco use that could be associated with Parkinson’s independent of ADHD. Patients with a history of drug or alcohol abuse were excluded from the study. The team were not able to account for other factors that could contribute to the development of Parkinson’s disease, including head trauma, brain injuries and environmental toxins.

According to Hanson, the study results should be considered preliminary. This study may be limited by the misclassification of non-ADHD subjects, who were diagnosed with the disorder outside of Utah, missed or incorrect diagnosis of Parkinson-like disease symptoms and the lack of information on the duration of use and dosage of ADHD medication prescribed.

This project builds on past research that reported a link between amphetamine abuse and the onset of Parkinson’s disease, confirmed by other research groups.

“I believe the treatment is still a benefit, especially for children who cannot control their ADHD symptoms,” Hanson said. “Medication really should be considered on a case-by-case basis.”


Explore further:
Study highlights multiple factors of ADHD medication use

More information:
“Increased Risk of Diseases of the Basal Ganglia and Cerebellum in Patients with a History of Attention-Deficit/Hyperactivity Disorder,” September 12, 2018, Neuropsychopharmacology.

Journal reference:
Neuropsychopharmacology

Provided by:
University of Utah

Tagged with:

About author

Related Articles