Author Interviews, Brain Injury / 03.01.2019
Multiple Concussions Linked to Decrease in Executive Brain Functions
MedicalResearch.com Interview with:
Robert Ross, Ph.D.
Assistant Professor
McConnell Hall, Room 424
University of New Hampshire
MedicalResearch.com: What is the background for this study?
Response: In the United States, 1.5-2 million people suffer from mild traumatic brain injuries, more commonly referred to as concussions, per year.
There is a large body of work illustrating the cognitive impairments associated with concussions in the immediate aftermath of the concussive event. However, it is not clear whether concussions can change cognition more long-term and how concussions might change how the brain functions during specific types of cognition.
In our study, we examined executive function, which is a cognitive process that helps control or manage other cognitive functions, in a group of healthy young adults aged 18-24 that had suffered at least two concussions and compared their performance and their brain oscillations to a group that had not suffered any concussions. Brain oscillations help the brain coordinate the activity of the thousands of neurons necessary for any sort of cognitive process to occur. The participants in the study self-reported their concussions with all concussions occurring at least one month prior to participating in the experiment.
Robert Ross, Ph.D.
Assistant Professor
McConnell Hall, Room 424
University of New Hampshire
MedicalResearch.com: What is the background for this study?
Response: In the United States, 1.5-2 million people suffer from mild traumatic brain injuries, more commonly referred to as concussions, per year.
There is a large body of work illustrating the cognitive impairments associated with concussions in the immediate aftermath of the concussive event. However, it is not clear whether concussions can change cognition more long-term and how concussions might change how the brain functions during specific types of cognition.
In our study, we examined executive function, which is a cognitive process that helps control or manage other cognitive functions, in a group of healthy young adults aged 18-24 that had suffered at least two concussions and compared their performance and their brain oscillations to a group that had not suffered any concussions. Brain oscillations help the brain coordinate the activity of the thousands of neurons necessary for any sort of cognitive process to occur. The participants in the study self-reported their concussions with all concussions occurring at least one month prior to participating in the experiment.
Dr. Rebholz[/caption]
Casey M. Rebholz, PhD, MS, MNSP, MPH, FAHA
Assistant Professor, Department of Epidemiology
Johns Hopkins Bloomberg School of Public Health
Core Faculty, Welch Center for Prevention, Epidemiology, and Clinical Research
Baltimore, MD 21287
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Individual beverages have been previously shown to influence risk of a wide range of cardiometabolic diseases. Less is known about beverage consumption and kidney disease risk.
In this study population, we found that one such beverage pattern consisted of soda, sugar-sweetened beverages, and water, and that higher adherence to the sugar-sweetened beverage pattern was associated with greater odds of developing incident kidney disease, even after accounting for demographic characteristics and established risk factors.
Dr. Miech[/caption]
Richard Miech Ph.D
Professor
Principal Investigator, Monitoring the Future
Institute for Social Research
University of Michigan
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Every year Monitoring the Future conducts a survey to examine trends in adolescent substance use. We draw a random sample of schools from a list of all schools in the United States and conduct our survey in ~400 schools. Our survey is representative of U.S. 8th, 10th, and 12th grade students. In other words, our results are what you would find if you surveyed every single 8th, 10th, and 12th graders in the United States, within the bounds of a small sampling error of a few percentage points.
An increase in vaping is the big news for 2018. In 10th and 12th grade the increase in nicotine vaping was the largest we've ever seen for any substance in the past 43 years. As a result of this increase in nicotine vaping, overall use of nicotine increased as well, which suggests that vaping is drawing youth into nicotine use. We also saw a significant increase in marijuana vaping.
Dr. Dermody[/caption]
Dr. Sarah Dermody, PhD
Assistant Professor
School of Psychological Science
Oregon State University
Corvallis Oregon
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Drinking alcohol is a risk factor for sustained smoking. In a sample of daily cigarette smokers receiving treatment for alcohol use disorder, we examined if reductions in drinking corresponded with reductions in nicotine metabolism as indexed by the nicotine metabolite ratio. The nicotine metabolite ratio is important because it is associated with smoking level and lapses. We found that for men, alcohol use and the nicotine metabolite ratio reduced significantly; however, for women, neither drinking nor nicotine metabolite ratio changed.
The lateral aspect of the left hand depicted here, reveals the presence of papules due to an infestation of the human itch mite, Sarcoptes scabiei var. hominis, in a case of what is commonly referred to as scabies.CDC image[/caption]
MedicalResearch.com: What is the background for this study?
MM: Scabies is extremely common. Globally in the region of 100-200 million people are believed to be affected by scabies annually.
Recently the WHO has recognised Scabies as a ‘Neglected Tropical Disease’ in response to this burden of disease. There has been increasing interest in using Mass Drug Administration (treating whole communities) as a strategy to control scabies in communities. In order to make this practical countries need an easy mechanism for establishing if scabies is a significant problem in their communities. In general when treating an individual, clinicians would conduct a full body examination to diagnose scabies – however this may not be practical or necessary when making decisions about whether to treat whole communities.
DE: Despite the fact that Scabies is a very common condition that causes a great deal of health problems, it has been largely neglected by health, research and funding agencies – but pleasingly, the WHO has now started to take action on scabies control, starting with the recognition of scabies as a "Neglected Tropical Disease"
Dr. Nguyen[/caption]
Oanh Kieu Nguyen, MD, MA
Assistant Professor
Division of Hospital Medicine
Zuckerberg San Francisco General Hospital
UCSF
MedicalResearch.com: What is the background for this study?
Response: In U.S. citizens and permanent residents with kidney failure or end-stage renal disease (ESRD), having health insurance, Medicare, or Medicaid guarantees access to regularly scheduled hemodialysis 2-3 times per week, the evidence-based standard of care for ESRD. This treatment helps people live relatively normal lives. In 40 of 50 U.S. states, undocumented immigrants with ESRD have limited access to hemodialysis because they are not eligible for any form of federal assistance including Medicare or Medicaid, and must wait until they are life-threateningly ill to receive dialysis through a hospital emergency department, a situation called “emergency-only hemodialysis.” There are an estimated 6,500 undocumented individuals in the U.S. suffering from ESRD.
A unique opportunity made it feasible for uninsured undocumented immigrants with ESRD receiving emergency-only dialysis in Dallas, Texas, to enroll in private, commercial health insurance plans in 2015 and made it possible for researchers to compare scheduled vs. emergency-only dialysis among undocumented immigrants with ESRD. This natural experiment included 181
Dr. Johnson[/caption]
Dayna A. Johnson PhD
Department of Epidemiology
Emory University
Atlanta, GA
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: There are several studies that have determined that African Americans have the highest prevalence of hypertension and are the most likely to have uncontrolled hypertension compared to other racial/ethnic groups. We were interested in studying whether sleep apnea contributed to hypertension control among African Americans.
We found that participants with sleep apnea were more likely to have resistant hypertension than those without sleep apnea. In particular, individuals with severe sleep apnea had the highest risk of resistant hypertension. Most of the participants with measured sleep apnea were undiagnosed (96%).
Josephine Funck Bilsteen, MSc
Department of Pediatrics, Hvidovre University Hospital, Hvidovre,
Section of Epidemiology, Department of Public Health
University of Copenhagen
Copenhagen, Denmark
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: The background of this study is that there is increasing recognition of the longer-term health and social outcomes associated with preterm birth such as independent living, quality of life, self-perception and socioeconomic achievements. However, much less is known about differences in education and income among adults born at different gestational weeks in the term period.
In this study shorter gestational duration, even within the term range, was associated with lower chances of having a high personal income and having completed a secondary or tertiary education at age 28 years. This is the first study to show that adults born at 37 and 38 completed weeks of gestation had slightly lower chances of having a high income and educational level than adults born at 40 completed weeks of gestation.
Dr. Duren[/caption]
Dana L. Duren, PhD
Professor, Director of Orthopaedic Research
Director of Skeletal Morphology Laboratory
Thompson Laboratory for Regenerative Orthopaedics
Department of Orthopaedic Surgery
Missouri Orthopaedic Institute, University of Missouri
Columbia, MO 6521
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: The motivation for this study is the apparent accelerated maturity in children in the United States.
[caption id="attachment_46650" align="alignleft" width="139"]