Breaking News
March 22, 2018 - HORIBA’s Microsemi CRP analyzer improves quality of care in emergency pediatric units, study shows
March 22, 2018 - Range of Vaginal Dryness Products Can Help Postmenopausal Women: Study
March 22, 2018 - Higher Dose Tx Deemed Safe in Pulmonary TB
March 22, 2018 - Diet soda associated with higher odds of diabetic retinopathy
March 22, 2018 - LSD reduces ‘sense of self’
March 22, 2018 - Vitamin D deficiency linked to metabolic syndrome in postmenopausal women
March 22, 2018 - Changes in the intestines may be responsible for reversal of diabetes after bariatric surgery
March 22, 2018 - iPads and Cancer; Clot Retrieval and Stroke: It’s PodMed Double T!
March 22, 2018 - Premature births linked to changes in mother’s bacteria
March 22, 2018 - Brain SPECT scans predict treatment outcomes in patients with depression
March 21, 2018 - Researchers succeed in integrating artificial organelles into cells of living organism
March 21, 2018 - Researchers discover ‘missing mutation’ in severe infant epilepsy
March 21, 2018 - Researchers develop statistics-based computational scheme to zoom in on brain function
March 21, 2018 - Verge joins Genomics England’s Discovery Forum industry partnership
March 21, 2018 - Trovagene Announces First Patient Successfully Completes Cycle 1 of Treatment with PCM-075 in Combination with Low Dose Cytarabine (LDAC) in AML Trial
March 21, 2018 - Congenital Cardiac Cath Tx Often Strays from Guidelines
March 21, 2018 - Marked increase in cardiovascular risk factors in women after preeclampsia
March 21, 2018 - New app may help predict, track manic and depressive episodes in bipolar patients
March 21, 2018 - Discovery of genes could lead to development of novel therapies for EBV-related cancers
March 21, 2018 - High-fat, high-cholesterol diet depletes ranks of artery-protecting immune cells
March 21, 2018 - Research misconduct allegations shadow likely CDC appointee
March 21, 2018 - Most Breast Ca Patients Fail to Get Genetic Counseling
March 21, 2018 - Lopsided ear function can lead to lopsided brain development
March 21, 2018 - Acupuncture helps manage menopausal symptoms, review finds
March 21, 2018 - Motor skill training may contribute to reading skills in obese children
March 21, 2018 - Poor dental health may be related to increased diabetes risk
March 21, 2018 - Chronic opioid users at increased risk of complications after spinal fusion surgery
March 21, 2018 - Study uncovers potential therapeutic target against large family of parasites
March 21, 2018 - NSAID use linked to increased risk of atrial fibrillation
March 21, 2018 - Scientists develop brain “stethoscope” that can detect silent seizures
March 21, 2018 - New method predicts effects of global warming on disease
March 21, 2018 - Insurance Company Hurdles Burden Doctors, May Harm Patients
March 21, 2018 - Renal Transplant from HCV-Positive Donors Feasible
March 21, 2018 - Myelodysplastic syndrome: MedlinePlus Medical Encyclopedia
March 21, 2018 - Research reveals brain mechanism involved in language learning
March 21, 2018 - Many parents still hesitate to try early peanut introduction, survey finds
March 21, 2018 - Audiologist urges tinnitus sufferers facing ‘revolving door healthcare’ to seek support
March 21, 2018 - Study reveals impact of prostate cancer on wives and partners of sufferers
March 21, 2018 - ‘Almost a Miracle Drug’: What We Heard This Week
March 21, 2018 - Study shows NIH spent >$100 billion on basic science for new medicines
March 21, 2018 - Columbia researchers identify nerve cells that drive fruit fly’s escape behavior
March 21, 2018 - Sartorius Stedim Biotech selected by ABL Europe to supply single-use process technologies
March 21, 2018 - Increase in coffee consumption may help battle against colon cancer
March 21, 2018 - Hydrogel may accelerate healing of diabetic ulcers
March 21, 2018 - Dermira’s Two Phase 3 Trials Evaluating Olumacostat Glasaretil in Patients with Acne Vulgaris Did Not Meet Co-Primary Endpoints
March 21, 2018 - DePuy Synthes introduces ACTIS Total Hip System for improving initial implant stability
March 21, 2018 - ‘Oh, It Was Nothing’
March 21, 2018 - Herbal drug kratom linked to salmonella illnesses, CDC says
March 21, 2018 - New optical point-of-care device could enhance screening for thyroid nodules
March 21, 2018 - FDA Expands Approval of Adcetris (brentuximab vedotin) for First-Line Treatment of Stage III or IV Classical Hodgkin Lymphoma in Combination with Chemotherapy
March 21, 2018 - Eosinophilic Esophagitis: Late Manifestation of Allergic March
March 21, 2018 - Signaling pathway involving the Golgi apparatus identified in cells with Huntington’s disease
March 21, 2018 - Quintupling inhaled steroid doses may not benefit children with asthma
March 21, 2018 - Study shows clear connection between cardiovascular fitness in middle age and dementia risk
March 21, 2018 - Premature babies have higher risks of health complications in Bangladesh
March 21, 2018 - Child’s temperament and parenting influence weight gain in babies
March 21, 2018 - Researchers find the heart to be capable of arrhythmia termination after local gene therapy
March 21, 2018 - Inhealthcare to provide digital infrastructure for NHS to help protect people from falls
March 21, 2018 - Flu Season Finally Slowing Down
March 21, 2018 - Mixed Results for Shorter DAPT in ACS Patients
March 21, 2018 - Scientists discover fish scale-derived collagen effective for healing wounds
March 21, 2018 - Genomics England announces new partnership to improve efficiency of next-generation sequencing analysis
March 21, 2018 - Adjuvant AC chemotherapy found to be effective in treating HRD-positive breast cancer patients
March 21, 2018 - Researchers identify new treatment targets for lung diseases using big data
March 21, 2018 - Kids see more women in science than five decades ago
March 21, 2018 - Research shows link between chronic fatigue syndrome and lower thyroid hormone levels
March 21, 2018 - Alzheimer’s disease on the rise
March 21, 2018 - Two Agents Equal as Pretreatment for Adrenal Tumor Surgery
March 21, 2018 - ‘Icebreaker’ protein opens genome for T cell development, researchers find
March 21, 2018 - Women in medicine shout #Metoo about sexual harassment at work
March 21, 2018 - Mother’s pre-pregnancy waist size may be linked to child’s autism risk
March 21, 2018 - Second hand marijuana smoke can cause serious damage
March 21, 2018 - International study shows benefits of using MRI at the start of prostate cancer diagnosis
March 20, 2018 - Santhera Reports Outcome of Exploratory Trial with Idebenone in PPMS Conducted at the NIH
March 20, 2018 - ECG Patch Ups At-Home Afib Diagnosis in mSToPS Trial
March 20, 2018 - ROS-scavenging nanozymes for anti-inflammation therapeutics
March 20, 2018 - Genomics England announces appointment of global genomics pioneer as first CEO
March 20, 2018 - Test flight at German Aerospace Center in Cologne demonstrates functionality of deficopter
March 20, 2018 - Music therapy helps treat combat-related psychological injuries in military personnel
March 20, 2018 - Innovative psychotherapeutic treatment protocol for obsessive-compulsive disorders
Scientists elucidate why exercise slows progression of Parkinson’s disease

Scientists elucidate why exercise slows progression of Parkinson’s disease

image_pdfDownload PDFimage_print

While vigorous exercise on a treadmill has been shown to slow the progression of Parkinson’s disease in patients, the molecular reasons behind it have remained a mystery.

But now scientists at the University of Colorado Anschutz Medical Campus may have an answer.

For the first time in a progressive, age-related mouse model of Parkinson’s, researchers have shown that exercise on a running wheel can stop the accumulation of the neuronal protein alpha-synuclein in brain cells.

The work, published Friday in the journal PLOS ONE, was done by Wenbo Zhou, PhD, research associate professor of medicine and Curt Freed, MD, professor of medicine and division head of the Division of Clinical Pharmacology and Toxicology at the CU School of Medicine.

The researchers said clumps of alpha-synuclein are believed to play a central role in the brain cell death associated with Parkinson’s disease. The mice in the study, like humans, started to get Parkinson’s symptoms in mid-life. At 12 months of age, running wheels were put in their cages.

“After three months,” Zhou said, “the running animals showed much better movement and cognitive function compared to control transgenic animals which had locked running wheels.”

Zhou and Freed found that in the running mice, exercise increased brain and muscle expression of a key protective gene called DJ-1. Those rare humans born with a mutation in their DJ-1 gene are guaranteed to get severe Parkinson’s at a relatively young age.

The researchers tested mice that were missing the DJ-1 gene and discovered that their ability to run had severely declined, suggesting that the DJ-1 protein is required for normal movement.

“Our results indicate that exercise may slow the progression of Parkinson’s disease by turning on the protective gene DJ-1 and thereby preventing abnormal protein accumulation in brain,” Freed said.

He explained that his animal experiments had very real implications for humans.

“Our experiments show that exercise can get to the heart of the problem in Parkinson’s disease,” Freed said. “People with Parkinson’s who exercise are likely able to keep their brain cells from dying.”

Parkinson’s is a disease caused by the death of brain cells that make a critical chemical called dopamine. Without dopamine, voluntary movement is impossible. Most people with Parkinson’s disease take a drug called L-DOPA to treat their symptoms. The oral drug is converted into dopamine in the brain allowing patients to get up and move.

In 1988, Freed and his colleague Robert Breeze, MD, performed the first transplant of human fetal dopamine cells into a Parkinson’s patient in the United States. His lab is currently working to convert human embryonic stem cells to dopamine neurons. These techniques should make it possible to produce unlimited quantities of dopamine cells for transplant.

Tagged with:

About author

Related Articles