MedicalResearch.com Interview with:
Daniel Belsky, PhD
NIA Postdoctoral Fellow
Center for the Study of Aging and Human Development
Duke University
Polygenic risk and the development and course of asthma: an analysis of data from a four-decade longitudinal study
MedicalResearch.com: What are the main findings of the study?
Dr. Belsky : We looked to the largest-ever genome-wide association study of asthma (that study by the GABRIEL Consortium included more than 26,000 individuals) to identify genetic variants that could be used to construct a genetic profile of asthma risk. We then turned to The Dunedin Multidisciplinary Health and Development Study, a unique cohort of 1,000 individuals who have been followed from birth through their fourth decade of life with extensive measurements of asthma and related traits. We computed a “genetic risk score” for each person based on the variants identified in GWAS. Then, we looked at who developed asthma, when they developed asthma, and what that asthma looked like in terms of allergic response and impaired lung function.
What we found:
(1) People with higher genetic risk scores were more likely to develop asthma and they developed asthma earlier in life.
(2) Among children who developed asthma, the ones at higher genetic risk were more likely to have persistent asthma through midlife.
(3) Genetic risk was specifically associated with allergic asthma that resulted in chronic symptoms of impaired lung function.
(4) People with higher genetic risk score developed more severe cases of asthma. As compared to people with a lower genetic risk, they were more often absent from school and work because of asthma and they were more likely to be hospitalized for asthma.
(5) The genetic risk score provided new information about asthma risk that could not be obtained from a family history.
MedicalResearch.com Interview with:
Maarten C. Bosland, DVSc, PhD
Professor of Pathology
Department of Pathology
University of Illinois at Chicago
College of Medicine
Chicago, IL 60612
MedicalResearch.com: What are the main findings of the study?
Dr. Bosland: Daily consumption of a supplement containing soy protein isolate for two years following radical prostatectomy did not reduce recurrence of prostate cancer in men at high risk for this (radical prostatectomy is surgical removal of the prostate to treat prostate cancer). The study showed that this soy supplementation was safe. It is not clear whether this result indicates that soy does not prevent the development of prostate cancer, but men that have the disease probably do not benefit from soy supplementation.
MedicalResearch.com Interview with: Mary McGrae McDermott, MD Professor of Medicine Northwestern University Feinberg School of Medicine Contributing Editor, JAMA Home-Based Walking Exercise Intervention in Peripheral Artery Disease A Randomized Clinical Trial MedicalResearch.com: What are the main findings of the study? Answer: The goals trial found that a group-mediated cognitive behavioral intervention significantly improved six-minute walk performance, physical...
MedicalResearch.com Interview with:
Keith Summa MD/PhD Student
Northwestern University Feinberg School of Medicine
Chicago, Illinois, United States of America
Disruption of the Circadian Clock in Mice Increases Intestinal Permeability and Promotes Alcohol-Induced Pathology and Inflammation
MedicalResearch.com: What are the main findings of the study?
Answer: The main findings of the study were that disruption of circadian rhythms, which we achieved using independent genetic and environmental strategies in mice, leads to impaired function of the intestinal epithelial barrier. This loss of epithelial barrier integrity, which has been associated with numerous diseases, results in "gut leakiness," a phenomenon in which endotoxin from gut bacteria can cross the intestinal wall and enter circulation, promoting inflammation. In particular, using in a disease model of gut-derived endotoxemia and inflammation, alcoholic liver disease, we found the circadian disruption interacted with alcohol, leading to increased gut leakiness, inflammation and liver damage.
MedicalResearch.com Interview with
Dr. Juan Pablo Villablanca, MD
Director, Neuroradiology
Ronald Reagan UCLA Medical Center
UCLA Medical Center, Santa Monica
The Natural History of Asymptomatic Unruptured Cerebral Aneurysms Evaluated Using CTA - Growth and Rupture Incidence and Correlation to Epidemiologic Risk Factors.
MedicalResearch.com: What are the main findings of the study?
MedicalResearch.com Interview with: Paul C. Schroy III, M.D., M.P.H. Professor of Medicine, Boston University School of Medicine Director of Clinical Research, GI Section, Boston Medical Center 85 East Concord Street, Room 7715 Boston, MA 02118 MedicalResearch.com: What are the main findings of the study? Dr. Schroy: Our study affirms the importance of race as an independent...
Dr Patrick Freund
Spinal Cord Injury Center Balgrist
University Hospital Zurich, University of Zurich
Forchstrasse 380
8008 Zurich, Switzerland
MedicalResearch.com: What are the main findings of the study?
Dr. Freund: Novel interventions targeting acute spinal cord injury (SCI) have entered clinical trials, but neuroimaging biomarkers reflecting structural changes within the central nervous system are still awaited. In chronic SCI, neuroimaging provided evidence of structural changes at spinal cord and brain level that could be related to disability. However, the pattern and time course of these structural changes and their potential to predict clinical outcomes is uncertain.
In a prospective longitudinal study, thirteen patients with acute traumatic SCI were assessed clinically and by longitudinal MRI (within five weeks of injury, after two, six and twelve months) and were compared to eighteen healthy controls. Cross-sectional cord area, cranial white matter (CST) and grey matter (cortex) volume decrease was evident at baseline and progressed over twelve months. Multi-parametric mapping of myelin sensitive magnetization transfer (MT) and longitudinal relaxation rate (R1) was reduced both within and beyond the areas of atrophic changes. Better neurological and functional outcomes were associated with less atrophic changes of the CST in both cord and brain.
MedicalResearch.com Interview with: Susan Swetter, MD
Professor of Dermatology
Director, Pigmented Lesion & Melanoma Program
Stanford University Medical Center & Cancer Institute
MedicalResearch.com Interview with: Miguel Ramalho-Santos, Ph.D.
University of California - San Francisco stem-cell scientist,
Vitamin C induces Tet-dependent DNA demethylation and a blastocyst-like state in ES cells
MedicalResearch.com: What are the main findings of the study?
Answer: We found that Vitamin C has a profound effect in the regulation of gene activity in cultured mouse embryonic stem cells. Vitamin C specifically enhances the action of enzymes called Tet's, which remove certain chemical modifications to DNA (methylation). In this way, Vitamin C makes cultured mouse embryonic stem cells behave more like the early cells in the embryo that they represent.
MedicalResearch.com Interview with
Dr. Karen E. Joynt, MD MPH
Cardiovascular Division
Brigham and Women's Hospital and VA Boston Healthcare System
Department of Health Policy and Management, Harvard School of Public Health
MedicalResearch.com: What are the main findings of the study?
Dr. Joynt: The main findings of the study were two-fold.
First, high-cost patients in Medicare (the top decile of spenders) are responsible for about 80% of inpatient spending in the Medicare program, so understanding more about these patients' patterns of care is really important.
Second, we found that only about 10% of acute-care spending for these high-cost Medicare patients were for causes that we generally think of as preventable in the short term, like uncontrolled diabetes, COPD, or heart failure.
The rest of the spending was for acute conditions that we generally don't think of as preventable (at least in the short term), such as orthopedic procedures, sepsis, and cancer.
MedicalResearch.com Interview with Dr. Kumar Dharmarajan MD MBA
Dr. Mitchell Jones, MD, PhD
Faculty of Medicine at McGill University in Montreal
MedicalResearch.com: What are the main findings of the study?
Dr. Jones: We had previously reported on the cholesterol lowering efficacy of bile salt hydrolase active L. reuteri NCIMB 30242 due to reduced intestinal sterol absorption.
However, the effects of bile salt hydrolase active L. reuteri NCIMB 30242 on fat soluble vitamins was previously unknown and was the focus of the study.
MedicalResearch.com Interview with:
Marloes Heijstek MD
University Medical Center, Wilhelmina Children's Hospital
Department of Pediatric Immunology and Rheumatology
Room number KC 03.063.0
P.O. Box 85090 Lundlaan 6
3508 AB Utrecht
MedicalResearch.com: What are the main findings of the study?
Dr. Heijstek: The main findings of our study are that MMR booster vaccination does not affect JIA disease, does not cause flares of arthritis and induces high rates of protective immunity.