MedicalResearch.com Interview with:
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Harriet De Wit, PhD[/caption]
Harriet De Wit, PhD Professor of Psychiatry and Behavioral Neuroscience University of Chicago
MedicalResearch.com: What is the background for this study? Response: There are numerous reports that psychedelics like LSD, taken in very small ‘microdoses’, help boost mood, cognitive function and productivity. The practice is popular in Silicon Valley and among media figures, who report remarkable beneficial effects from regular use of these microdoses. The possible antidepressant effects of LSD are plausible from a neurobiological perspective, as the drug acts directly on serotonin receptors, the same systems where SSRI’s act. However, the effects of microdosing have not yet been validated in controlled research. In our study, we recruited healthy men and women to ingest repeated, low doses of LSD under double blind conditions. They attended four laboratory sessions, separated by three to four days. They were randomly assigned to one of three groups who received the same drug on all four sessions: placebo, 13 micrograms of LSD or 26 micrograms of LSD. Subjects were not told exactly what drug they were receiving until the end of the study. We measured their mood, emotional reactivity and cognition.
Dr. Myran[/caption]
Daniel Myran, MD, MPH, CCFP, FRCPC
Family and Public Health and Preventive Medicine Physician
CIHR Fellow, Ottawa Hospital Research Institute
Department of Family Medicine Innovation Fellow
University of Ottawa
MedicalResearch.com: What is the background for this study?
Response: Canada legalized recreational, or non-medical, cannabis in October 2018. Canada took phased approach to legalization initially only allowing flower-based cannabis products and oils and after one year permitting the sale of commercial cannabis edibles (e.g. THC containing candies, baked goods, and drinks). In this study we took advantage of this phased roll out of legal cannabis to understand the impact of legalization on cannabis exposures or poisonings in children aged 0-9 years and the contribution of different types of cannabis products to these events.
Dr. O'Donnell[/caption]
Julie O’Donnell, PhD MPH
Division of Overdose Prevention
National Center for Injury Prevention and Control
CDC
National Network of Public Health Institutes
New Orleans, Louisiana
MedicalResearch.com: What is the background for this study?
Response: The estimated number of drug overdose deaths in the US surpassed 100,000 over a 12-month period for the first time during May 2020-April 2021, driven by the involvement of synthetic opioids other than methadone (mainly illicitly manufactured fentanyl (IMF)), according to data from the National Vital Statistics System.
The State Unintentional Drug Overdose Reporting System (SUDORS) is a CDC-funded surveillance program that has collected detailed data on unintentional and undetermined intent drug overdose deaths since 2016 from death certificates, medical examiner and coroner reports, and full postmortem toxicology reports. SUDORS data allow for the analysis specifically of deaths involving fentanyl (rather than the larger category of synthetic opioids), and contain information about decedent demographics and other characteristics, as well as circumstances surrounding the overdose that might help inform prevention.
Dr. Thakrar[/caption]
Ashish Thakrar, MD
Internal Medicine & Addiction Medicine
National Clinician Scholars Program
University of Pennsylvania
MedicalResearch.com: What is the background for this study?
Response: About 1.8 million Americans are currently incarcerated, more than any other country in the world per capita. Of those 1.8 million, about 1 in 7 suffers from opioid addiction, putting them at high risk of overdose and death, particularly in the weeks following release.
Opioid use disorder is a treatable condition, particularly with the medications buprenorphine or methadone, but historically, prisons and jails have not offered treatment. Over the past five years, a few states and municipalities have enacted policies to provide access for OUD treatment. We examined whether these policies were actually improving access to treatment.
Dr. Howard[/caption]
Jeffrey Howard, PhD
Associate Professor
Department of Public Health
College for Health, Community and Policy
University of Texas at San Antonio
MedicalResearch.com: What is the background for this study?
Response: Drug and alcohol related mortality has been on the rise in the US for the past decade, which has drawn a lot of focus from researchers. At the same time maternal mortality, deaths caused by pregnancy complications, is recognized to be higher in the US than in other developed nations.
Very little has been reported about deaths among pregnant and recently pregnant women that are not caused by pregnancy complications, so my collaborators and I wanted to explore this. We did not anticipate that drug and alcohol deaths and homicides would account for so many deaths among pregnant and recently pregnant women.
Dr. Lane[/caption]
Scott D. Lane Ph.D.
McGovern Medical School
Vice Chair For Research
Director Of Neurobehavioral Laboratory
Center For Neurobehavioral Research On Addiction
Director Of Research
University of Texas Health Science Center at Houston
Houston, TX
MedicalResearch.com: What is the background for this study?
Response: Addiction science has made considerable progress in understanding how cocaine and other addictive drugs impair the brain. Over time, cocaine can disrupt brain regions that help us think, plan, solve problems, and exert self-control. These disruptions in brain structure can be seen in neuroimaging studies that reveal impairment in the nerve fibers or white matter (WM) tracts in the central and front parts of the brain. We conducted two systematic meta-analytic reviews of the literature to document the robustness of evidence showing alterations in WM integrity of chronic stimulant users relative to healthy control subjects who did not use cocaine or other drugs of abuse (Beard et al., 2019; Suchting et al., 2020). Importantly, WM impairments negatively predict treatment outcome, meaning individuals with greater levels of WM impairment are less likely to benefit from treatment and more likely to experience deficits in attention, working memory, and impulse control.
We reasoned that pharmacological interventions shown to protect WM integrity may help improve cognition and treatment outcomes in patients recovering from cocaine addiction. Pioglitazone, an approved medication for type 2 diabetes, has been shown to reduce inflammation and mediate protection after traumatic brain injury. The therapeutic potential of pioglitazone has prompted investigation of its role in neurodegenerative conditions, such as dementia, Alzheimer’s disease, and stroke. Similar to these brain diseases and injuries, pioglitazone might effectively protect the brain from the inflammatory damage created by cocaine use.
Dr. Mezue[/caption]
Kenechukwu Ndubisi Mezue, M.D
Fellow in
Sarah Windle[/caption]
Sarah Windle, MPH
PhD Student in Epidemiology
Department of Epidemiology, Biostatistics, and Occupational Health
McGill University (Montréal, Québec, Canada)
MedicalResearch.com: What is the background for this study?
Response: Concerns have been raised about the potential for increases in impaired driving following the legalization of recreational cannabis use in Canada in October 2018. Data from Statistics Canada suggest that cannabis use in the previous three months increased among adults (15 and older) from 14% before legalization in 2018 to 17% in 2019. Among those users with a driver’s license, 13% reported driving within two hours of cannabis use. While this proportion remained the same before and after legalization, this indicates that the absolute number of individuals who reported driving within two hours of use has increased following legalization (due to an increase in the number of users).
Dr. Bunik[/caption]
Maya Bunik, MD, MPH | Professor, Pediatrics
Medical Director, Child Health Clinic, Primary Care | Breastfeeding Management Clinic
Adult and Child Consortium for Health Outcomes Research and Delivery Science (ACCORDS)
School of Medicine| University of Colorado Anschutz Medical Campus
Children's Hospital Colorado
MedicalResearch.com: What is the background for this study?
Response: Marijuana legalization has been increasing in the United States, with increasing consumption of marijuana products. Currently, the American Academy of Pediatrics (AAP), American College of Obstetricians and Gynecologists (ACOG) and Academy of Breastfeeding Medicine (ABM) do not recommend marijuana use during pregnancy or lactation due to concerning though limited data on the effects of perinatal marijuana exposure.
As there has been increasing prevalence of women using marijuana during pregnancy due to legalization and perceptions of safety, we sought to determine the duration of THC excretion in breast milk among women who had evidence of marijuana use at delivery and abstained post-partum.
