Addiction, Author Interviews, Lifestyle & Health, Occupational Health / 04.04.2017

MedicalResearch.com Interview with: Jaana Halonen, Docent and Senior Researcher Finnish Institute of Occupational Health MedicalResearch.com: What is the background for this study? Response: Retirement is a significant life transition when substantial changes in daily life are experienced as retirees adapt to life without work. After retirement people have more leisure time and more opportunities for different activities, and less stress. These changes are positive, but retirement can also lead to reduced social control and loss of social contacts and therefore be perceived as a stressful life transition. Both the positive and negative aspects related to changes in leisure time, stress, and social networks around retirement may affect drinking behaviours. However, little is known about how risky alcohol consumption changes around the retirement transition. Thus, in our study we wanted to examine how and for whom risky drinking changes around the time of retirement. To do that we followed up public sector workers with questionnaires before and after their old-age retirement. (more…)
Author Interviews, Cannabis, Mental Health Research, Pediatrics / 04.04.2017

MedicalResearch.com Interview with: James McIntosh PhD Economics Department Concordia University Montreal, Quebec, Canada. MedicalResearch.com: What is the background for this study Response: Marijuana is about to become legal in Canada. Consequently, an analysis of its effects on users is a high priority. This issue has been explored by Canadian researchers to some extent but there are gaps in what is known about the effects of using marijuana. Most of the Canadian studies focus on youth or adolescent use. This is clearly important but adult use is as well. Establishing the link between early usage and the effects of use over an individual’s lifetime was a major objective of the study. (more…)
Author Interviews, Opiods, Pain Research / 19.03.2017

MedicalResearch.com Interview with: Dr. Sommer Hammoud MD ABOS Board Certified Assistant Professor of Orthopedic Surgery Thomas Jefferson University  MedicalResearch.com: What is the background for this study? What are the main findings? Response: The background for this exhibit stemmed from the growing problem of prescription opioid abuse in the United States.  As we saw this issue developing, we aimed to investigate the history behind this epidemic, what information we have now to fight it, and what information we need in the future to improve care our patients. Our main findings for each of those aims are the following: 1) It would appear that a large push at the end of the last century led to a lower threshold to prescribe opiates in the effort to control pain, leading to the current opioid epidemic 2) Mulitmodal methods of pain control and the expanding skill of regional anesthesia can be used to help decrease narcotic use and thus limit exposure to narcotics, and 3) Future research needs to focus on the psychologic aspect of patients' ability to manage pain and we should strive to be able to categorize patients in order to create an individualized pain management protocol which will most effectively manage pain. (more…)
Author Interviews, Cannabis, Heart Disease, Stroke / 19.03.2017

MedicalResearch.com Interview with: Aditi Kalla, MD Cardiology Research Fellow Einstein Medical Center Philadelphia MedicalResearch.com: What is the background for this study? Response: As of the recent 2016 election, decriminalization of cannabis passed in several states bringing the total count up to 28 states and D.C. where cannabis is now legal for medicinal and/or recreational purposes. From a physician’s perspective, it is rare that a drug has “hit the market” so to speak without undergoing clinical trials to determine safety and efficacy. Hence, we sought out to study if cannabis had any effects (positive or negative) on the cardiovascular system. (more…)
Author Interviews, CDC, Opiods, Pain Research / 19.03.2017

MedicalResearch.com Interview with: Anuj Shah (B.Pharm) Doctoral Student Division of Pharmaceutical Evaluation and Policy University of Arkansas for Medical Sciences MedicalResearch.com: What is the background for this study? Response: The CDC guideline on opioid prescribing, published in March 2016, included recommendations for initiation of opioid therapy. The guideline noted that there is a lack of data describing how acute opioid use transitions to long-term opioid use. This report seeks to address this gap by determining characteristics of initial opioid prescribing prognostic of long-term use, among opioid naïve cancer-free adults. (more…)
Addiction, Author Interviews, Cost of Health Care / 17.03.2017

MedicalResearch.com Interview with: Hefei Wen, PhD Assistant Professor, Department of Health Management & Policy University of Kentucky College of Public Health MedicalResearch.com: What is the background for this study? What are the main findings? Response: Buprenorphine has been proven effective in treating opioid use disorder. However, the high cost of buprenorphine and the limited prescribing capacity may restrict access to this effective medication-assisted treatment (MAT) for opioid use disorder. We found a 70% increase in Medicaid-covered buprenorphine prescriptions and a 50% increase in buprenorphine spending associated with the implementation of Medicaid expansions in 26 states during 2014. Physician prescribing capacity was also associated with increased buprenorphine prescriptions and spending. (more…)
Anesthesiology, Author Interviews, BMJ, Opiods, Stanford / 15.03.2017

MedicalResearch.com Interview with: Eric C Sun MD PhD, assistant professor Department of Anesthesiology Perioperative and Pain Medicine Stanford University School of Medicine Stanford, CA MedicalResearch.com: What is the background for this study? What are the main findings? Response: There have been large increases in opioid-related adverse events over the past decade. The goal of our study was to examine the extent to which these increases may have been driven by combined use of opioids and benzodiazepines, a combination that is known to be potentially risky. Overall, we found that the combined use of opioids and benzodiazepines nearly doubled (80% increase) between 2001 and 2013, and that opioid users who also used benzodiazepines were at a higher risk of an opioid-related adverse event. Indeed, our results suggest eliminating the combined use of opioids and benzodiazepines could have reduced the population risk of an opioid-related adverse event by 15%. (more…)
Addiction, Author Interviews, Mental Health Research / 10.03.2017

MedicalResearch.com Interview with: Carl Stevenson, PhD Assistant Professor of Neuroscience BSc Animal Science Admissions Tutor Local Group Rep, British Neuroscience Association School of Biosciences University of Nottingham Loughborough, UK MedicalResearch.com: What is the background for this study? What are the main findings? Response: Anxiety-related and substance abuse disorders can be serious forms of mental illness that are not always treated effectively by psychological therapies or medications. One strategy to enhance their treatment is to boost the effects of psychological therapy by combining it with medication. This study reviewed the literature on the effects of cannabidiol, a chemical found in the cannabis plant, in preclinical models of these disorders. Cannabidiol is safe to use in humans and doesn’t cause the ‘high’ associated with cannabis. This means that cannabidiol might be useful for treating certain symptoms without the unwanted side effects linked to medical cannabis. Our review confirmed that cannabidiol reduces fear and anxiety in various preclinical models, when given on its own or in conjunction with behavioural interventions that model psychological treatment for anxiety-related disorders. This could show that exploring the option of cbd for anxiety could be a step forward in treating the condition. Our review suggested that it can also reduce relapse in some preclinical models of addiction, although research looking at the effects of cannabidiol in substance abuse disorders is still in its infancy. (more…)
Author Interviews, Electronic Records, Opiods, Pain Research / 07.03.2017

MedicalResearch.com Interview with: Michelle S. Keller, MPH, PhD Candidate Health Policy and Management Cedars-Sinai Los Angeles CA 90048 MedicalResearch.com: What is the background for this new funding award? Response: Research shows that treating and managing chronic pain is tough, and it can be hard for patients and their physicians to be on the same page. Chronic pain touches so many facets of people’s lives—relationships, mental health, sleep, work—that treating it in a 15-minute visit can lead to a lot of frustration and disappointment. Our hope is that by arming patients and clinicians with evidence-based tools, we can help foster a better dialogue about what is ultimately important to patients, how to achieve fully functional lives while managing chronic pain. We’re testing two different types of communication tools: electronic health record alerts pointing physicians to guidelines when they write opioid prescriptions and patient portal-based tools that can help patients prepare for visits and become active, engaged partners in their care. (more…)
Addiction, Alcohol, Author Interviews, Cannabis, Mental Health Research / 03.03.2017

MedicalResearch.com Interview with: Emil F. Coccaro, M.D. Ellen C. Manning Professor Department of Psychiatry and Behavioral Neuroscience The University of Chicago Chicago, Illinois 60637 MedicalResearch.com: What is the background for this study? What are the main findings? Response: Aggressive behavior and drug use have been related for years but this study shows people with problematic aggression (Intermittent Explosive Disorder: IED) are in fact at risk for developing alcohol, tobacco, and cannabis use disorders and that the onset of problematic aggression (IED) begins before the onset of the drug use. The increased risk for alcohol use disorder was nearly six-fold higher, the increased risk for cannabis use disorder was seven-fold higher, and the increased risk for tobacco use disorder  was four-fold higher. In addition, the presence of IED increased the severity of the substance use disorder. (more…)
Addiction, Author Interviews, Emergency Care, Opiods / 02.03.2017

MedicalResearch.com Interview with: Alexander Diaz Bode M.D. Candidate University of Miami Leonard M. Miller School of Medicine Miami, FL MedicalResearch.com: What is the background for this study? What are the main findings? Response: Our country is in the midst of an opiate epidemic. This is particularly evident in the emergency department (ED), which continues to see an alarmingly large number heroin overdose. With the shutdown of “pill-mills”, where opioid prescriptions would be prescribed indiscriminately, Florida has seen particularly large increases in opiate use and overdose. In Miami, we noticed that during the summer of 2016, there was a disproportionate increase in heroin overdose being treated at our hospital relative to previous years. Our recently published study showed that fentanyl or fentanyl analog laced heroin likely contributed to this massive spike in heroin overdose observed during the summer of 2016. Fentanyl and its synthetic analogs are opioid receptor agonists that bind with hundreds of times higher affinity than diamorphine, aka heroin. Naloxone, better known by the brand name Narcan®, is used to reverse heroin overdose in the ED. This drug works by competitively inhibiting the opioid receptor, effectively “knocking off” the bound heroin. Using naloxone dosing as a surrogate marker of heroin purity, our study found that during the investigated spike there was a disproportionate increase in the amount of naloxone used in our ED to reverse overdose relative to the increase in opiate overdose. This indicated that a stronger opioid receptor agonist, such as fentanyl or fentanyl analogs, likely was involved in the massive spike in overdose observed during the summer of 2016. (more…)
Author Interviews, Cannabis, Opiods / 01.03.2017

MedicalResearch.com Interview with: Philippe Lucas VP, Patient Research & Access, Tilray Graduate Researcher, Centre for Addictions Research of BC MedicalResearch.com: What is the background for this study? Response: In 2001 Canada become one of the first nations to develop a federally regulated program to allow access to cannabis for medical purposes with the launch of the Marihuana Medical Access Regulations (MMAR). The program has undergone numerous convolutions, culminating in the establishment by Health Canada of the Marihuana for Medical Purposes Regulations (MMPR) in 2014, which was replaced by the Access to Cannabis for Medical Purposes (ACMPR) in 2016. One of the primary changes in the new program(s) has been to move from a single Licensed Producer (LP) of cannabis to multiple large-scale Licensed Producers. This is the first comprehensive survey of patients enrolled in the MMPR/ACMPR, and with 271 complete responses, it’s the largest survey of federally-authorized medical cannabis patients to date. (more…)
Addiction, Alcohol, Author Interviews, Cannabis, Education, Pediatrics, Smoking / 23.02.2017

MedicalResearch.com Interview with: Dr. James Williams UCL Medical School UCL, London, UK MedicalResearch.com: What is the background for this study? Response: Despite a downward trend over the last decade in the usage of particular substances amongst adolescents in the UK, smoking cigarettes, drinking alcohol and smoking cannabis remain prevalent behaviours in this demographic. These risky health behaviours present a large problem in terms of public health due to the immediate and long-term health problems they cause, as well as negative non-health outcomes such as poor educational attainment and reduced employment. The role of academic ability in determining patterns of substance use is not clear and no study has evaluated academic ability at age 11 in relation to the onset and persistence of all three substances from early to late adolescence and into young adulthood. Our study sought to determine the association between academic ability and the onset and persistence of substance use in adolescence in a representative sample of English school pupils. This would answer for the first time whether ability was associated with ‘experimentation’ in early adolescence or if the association persists into late adolescence. (more…)
Addiction, Author Interviews, Exercise - Fitness / 17.02.2017

MedicalResearch.com Interview with: Laurie de Grace Master's graduate from the Faculty of Physical Education and Recreation University of Alberta MedicalResearch.com: What is the background for this study? Response: Little is known about the development of substance addiction in the context of sport. There is substantial evidence showing a positive association between sport participation and alcohol use, particularly the binge drinking that is more commonly associated with athletes than non-athletes. However, the connection between sport participation and the use of other substances is not clear. We undertook this study to learn from the perspective of those in recovery from substance addiction, how sport may or may not have played a role in their substance use and subsequent addiction. (more…)
Addiction, Author Interviews, Nature / 14.02.2017

MedicalResearch.com Interview with: Andrea K. Globa, Ph.D. Candidate Graduate Program in Neuroscience Life Sciences Institute University of British Columbia Vancouver, BC, Canada MedicalResearch.com: What is the background for this study? Response: Addiction is a complex disease, characterized by continued substance use despite serious negative consequences, increased drug tolerance, and withdrawal. In fact, the statistics show that over 40 million Americans abuse or are addicted to nicotine, alcohol or other drugs. This is a huge public health issue, so naturally, scientists are interested in figuring out why people get addicted, and in particular why certain people are more prone to addiction than others. Studies examining genetic differences in addicted populations have shown that there are many mutations in genes that are important for brain function. One group of genes affected encode proteins that act as 'glue' to hold cells together. These proteins are called cadherins. In the brain, cadherins are important for holding brain cells together at spots where they communicate with one another – and these points where brain cells talk to one another are called synapses. Many neuroscientists believe that addiction is actually a type of "pathological" learning, where there are changes at synapses in a brain circuit involved in reward and motivation. So we decided to examine the molecular mechanisms that are important for the strengthening of synapses in this brain circuit. To put it very simply, to learn something you have to make your synapses stronger, and this involves adding more cadherin or 'glue' to the synapse. We wanted to see if these same rules held true in addiction. (more…)
Accidents & Violence, Alcohol, Author Interviews, Pediatrics / 14.02.2017

MedicalResearch.com Interview with: Scott E. Hadland, MD, MPH, MS Assistant Professor of Pediatrics Boston University School of Medicine Urban Health & Advocacy Track Director | Boston Combined Residency Program Boston, MA 02118 MedicalResearch.com: What is the background for this study? What are the main findings? Response: Studies to date have shown that states’ alcohol laws can help prevent young people from dying in car crashes. However, studies to date have usually only looked at a single policy at once. We wanted to build on these previous studies by looking at the overall effect of multiple alcohol laws acting at once. We also wanted to look at laws not necessarily only targeting drinking and driving among young people, but also policies aimed primarily at adults over 21. We studied deaths of young people under 21 who were killed in motor vehicle crashes across the United States between 2000 and 2013. We found that one-quarter of all young people died in a crash involving a driver who alcohol level was over the legal limit. One-half died in a crash in which the driver had any level of alcohol in their bloodstream above zero. We also found that most young people died on evenings and weekends, which is when people are most likely to have been drinking. Importantly, almost half of all young people died in a crash in which they were the passenger, not the driver. In 80% of cases in which they were the passenger, it was actually an adult >21, not a young person, who was driving the vehicle. We then looked at states’ alcohol laws, and found that the stronger the set of alcohol policies in a state, the lower the likelihood of young people dying in a crash that was alcohol-related. Policies included laws relating to alcohol taxes, alcohol availability and hours of sales, and graduated driver’s licensing for young people, among many others. (more…)
Addiction, Author Interviews, Pediatrics / 08.02.2017

MedicalResearch.com Interview with: Kristi Roberts, M.S., M.P.H. Research Project Coordinator Center for Injury Research and Policy Nationwide Children’s Hospital Columbus, Ohio  MedicalResearch.com: What is the background for this study? What are the main findings?
  • We know that 74.1 million US households own at least one pet and one-half of households have a child age 19 years or younger living in the home so there is a potential for unintentional pediatric exposure to pet medication.
  • We realize that pets are common and an important part of families, especially those with young children. However, pets often require medications to keep them healthy and these medications could be dangerous to a child if the child is exposed (gets a hold of or swallows the medicine).
  • We looked at 15 years’ worth of data and found that over 1,400 children were exposed to a veterinary pharmaceutical product. That is about 95 each year or 2 children every week that are being exposure to medications intended for pets.
  • Children under 5 years old are the age group most frequently exposed to medications intended for pets. These young children typically ate or swallowed the medication after they found it when climbing on the counter or while the parent was trying to give the medication to a pet. Most of the calls were for medications intended for dogs.
  • Teenagers were also exposed to medications intended for pets but for different reasons. Many teens mistakenly took pet medication instead of human medication.
  • The majority of exposures occurred at home (96%) and were not expected to result in long-term or long-lasting health effects (97%).
  • While many people don’t think of their pet’s medication as harmful some medications, both human and veterinary, could be highly dangerous even at low dosages, especially for small children.
(more…)
Addiction, Author Interviews, JAMA / 07.02.2017

MedicalResearch.com Interview with: Lin Lu, M.D. Ph.D. Director/Professor, Institute of Mental Health and Peking University Sixth Hospital Director/Professor, National Institute on Drug Dependence, Peking University Beijing China MedicalResearch.com: What is the background for this study? Response: Nicotine addiction is the leading preventable cause of mortality, and causes over 6 million deaths each year. One fundamental mechanism that maintain smoking relapse in smokers is the persistence of memories of both nicotine reward and nicotine-associated conditioned stimulus (CS, e.g. ashtray,cigarette lighters, etc.).Preclinical studies suggest that the drug reward memories can be reactivated by nicotine-associated CS undergo an unstable stage, named memory reconsolidation, and that pharmacological or behavioral manipulations that interfere with reconsolidation inhibit subsequent drug relapse. However, most of the translational studies targeting reconsolidation stages of the drug reward memory have not been successful.One important reason is that when participants were exposed to nicotine-associated CS to induce memory reconsolidation, the pharmacological or behavioral manipulations only interfere with the reconsolidation of memories selectively associated with the reactivated CS, without affecting other CSs. However, in real life, smoking is associated with multiple CSs that vary across individuals. Thus, a key question is how to interfere with reconsolidation of multiple nicotine-associated memories . In the present study, we introduce a novel memory reconsolidation interference procedure in which we reactivated multiple nicotine reward memories in rats and human smokers by acute exposure to nicotine (the UCS) and then interfered with memory reconsolidation using the noradrenergic blocker propranolol, an FDA-approved drug. (more…)
Addiction, Author Interviews, JAMA / 06.02.2017

MedicalResearch.com Interview with: Guillaume Sescousse, PhD Senior post-doc Donders Centre for Cognitive Neuroimaging The Netherlands with collaborators Maartje Luijten, PhD, and Arnt Schellekens, MD PhD MedicalResearch.com: What is the background for this study? What are the main findings? Response: People with an addiction process rewards in their brain differently from people who are not addicted. However, whether this is associated with “too much” or “too little” brain activity is an open question. Indeed, past research has produced conflicting findings. In order to get a reliable answer, we have combined 25 studies investigating brain reward sensitivity in more than 1200 individuals with and without addiction to various substances such as alcohol, nicotine or cocaine but also gambling. By analyzing the brain images from these studies, we have discovered an important difference in brain activity between expecting a reward and receiving a reward. Compared with non-addicted individuals, individuals with substance or gambling addiction showed a weaker brain response to anticipating monetary rewards. This weaker response was observed in the striatum, a core region of the brain reward circuit, possibly indicating that individuals with an addiction have relatively low expectations about rewards. In contrast, this same region showed a relatively stronger response to receiving a reward in individuals with substance addiction compared with non-addicted individuals. Many addiction rehab centres, such as Avante, offer targeted addiction relief strategies to help a specific person with their addiction. This stronger response possibly indicates a stronger surprise to getting the reward, and is consistent with low expectations. This same effect was not found among people addicted to gambling. (more…)
Accidents & Violence, Addiction, Author Interviews, NIH, Opiods, Race/Ethnic Diversity / 27.01.2017

MedicalResearch.com Interview with: Dr Meredith S Shiels Division of Cancer Epidemiology and Genetics National Cancer Institute Bethesda, MD MedicalResearch.com: What is the background for this study? Response: In most high-income countries, premature death rates have been declining, due to the overwhelming successes of public health efforts to prevent and treat chronic disease. The US is a major outlier, where death rates overall have plateaued, or even increased, as reported recently by our sister agency, the Centers for Disease Control and Prevention. Of particular concern are recent reports of increasing death rates among Americans during mid-life. To expand upon prior findings, we focused on premature death, which we defined as death occurring between the ages of 25 and 64. We examined finely detailed death certificate data for the entire U.S. population and described changes in death rates during 1999-2014 by cause of death, sex, race, ethnicity, and geography. To provide context to our findings, we compared trends in death rates in the U.S. to England and Wales and Canada. (more…)
Author Interviews, BMJ, End of Life Care, Opiods, Pain Research / 21.01.2017

MedicalResearch.com Interview with: Dr. Katherine Irene Pettus, PhD, OSB Advocacy Officer International Association for Hospice and Palliative Care Vice Chair, Vienna NGO Committee on Drugs Secretary NGO Committee on Ageing, Geneva MedicalResearch.com: What is the background for this study? Response: The background for this study is analysis of the three international drug control treaties, official attendance and participation at meetings of the Commission on Narcotic Drugs for the past four years, ongoing discussion of national opioid consumption rates with INCB, and years of home hospice visits in developing countries. (more…)
Addiction, Author Interviews, Mental Health Research / 20.01.2017

MedicalResearch.com Interview with: Emily Brignone, BS Informatics, Decision Enhancement, and Analytic Sciences Center VA Salt Lake City Health Care System, Salt Lake City, Department of Psychology Utah State University, Logan, Utah MedicalResearch.com: What is the background for this study? Response: Nearly 30% of active duty Veterans of post-9/11 conflicts in Iraq and Afghanistan are discharged from military service for reasons other than expired term of service or retirement. These non-routine discharges can occur for a variety of reasons, including disability, failure to meet or maintain qualifications, early release, or misconduct. Veterans discharged under non-routine conditions are at greater risk for several concerning outcomes during the reintegration period, including unemployment, incarceration, homelessness, and suicide. A better understanding of the context of the transition from military service to civilian life, including discharge type, may provide opportunities for mitigating risk for these negative outcomes. One potential indicator for the conditions surrounding this transition is the administrative code that the Department of Defense assigns to active duty military service members at the time of their separation from service. These codes describe the circumstances related to discharge, and can serve as clinically significant early markers for post-deployment mental illness, substance use disorders, and suicidality, and thereby subsequent adverse reintegration outcomes. (more…)
Author Interviews, CDC, Cost of Health Care, Opiods / 19.01.2017

MedicalResearch.com Interview with: Dora Lin, MHS Sr. Research Assistant Johns Hopkins Bloomberg School of Public Health Center for Drug Safety and Effectiveness Baltimore, MD 21205  MedicalResearch.com: What is the background for this study? What are the main findings? Response: In response to the opioid epidemic and growing number of overdose deaths each year, the CDC released draft guidelines to improve the safe use of opioids in primary care. The draft guidelines were open to public comment, and many organizations, ranging from professional societies to consumer advocates to local governmental organizations, submitted comments regarding the guidelines. We examined the levels of support or non-support for the draft guidelines among the 158 organizations who submitted comments.   We also examined each organization’s relationship to opioid manufacturers. Most organizations supported the guidelines, regardless of whether or not they had a financial relationship to a drug company. However, organizations receiving funding from opioid manufacturers were significantly more likely to be opposed to the guidelines than those who did not receive such funding. (more…)
Alcohol, Author Interviews, Cannabis / 17.01.2017

MedicalResearch.com Interview with: Kathleen K. Bucholz, Ph.D. Professor, Department of Psychiatry Washington University School of Medicine St. Louis MO 63110-1547 MedicalResearch.com: What is the background for this study? Response: We know that development of alcohol use disorder progresses through several stages of alcohol use, from beginning to drink, to engaging in problem drinking, and then to developing alcohol use disorder, but we don’t know whether the same factors are associated with each step in this progression. Stage-specific associations have implications for prevention, where targeting certain characteristics might stave off progression to the next level of alcohol involvement, potentially. That is what this particular study set out to investigate. The data were from nearly 3600 adolescents and young adults, the majority of whom came from families with alcohol use disorder in their relatives. Thus, this sample was enriched with individuals who were at high risk for progressing to more severe stages of alcohol involvement. In studying the associations at each stage, we strengthened our analysis by defining wherever possible variables as risk factors only if they occurred before or at the same age as the particular alcohol stage. For example, we counted cannabis use as a risk factor for starting to drink only if it either preceded or occurred at the same age as taking the first drink. With this definition, we can infer that a particular factor is antecedent and not simply a correlated influence. (more…)
Addiction, Author Interviews, Nutrition, Weight Research / 13.01.2017

MedicalResearch.com Interview with: Nicholas V. DiPatrizio, Ph.D. Assistant Professor of Biomedical Sciences University of California, Riverside School of Medicine Riverside, California, 92521 MedicalResearch.com: What is the background for this study? What are the main findings? Response: Endocannabinoids are a group of lipid signaling molecules that serve many physiological roles, including the control of food intake, energy balance, and reward. Previous research by my group found that tasting specific dietary fats drives production of the endocannabinoids in the upper small intestine of rats, and inhibiting this signaling event blocked feeding of fats (DiPatrizio et al., Endocannabinoid signaling in the gut controls dietary fat intake, Proceedings of the National Academy of Sciences, 2011). Thus, gut-brain endocannabinoid signaling is thought to generate positive feedback to the brain that promotes the intake of foods containing high levels of fats. We now asked the question of what role peripheral endocannabinoid signaling plays in promoting obesity caused by chronic consumption of a western diet (i.e., high levels of fats and sugar), as well as the role for endocannabinoids in overeating that is associated with western diet-induced obesity. When compared to mice fed a standard low-fat/sugar diet, mice fed a western diet for 60 days rapidly gained body weight and became obese, consumed significantly more calories, and consumed significantly larger meals at a much higher rate of intake (calories per minute). These hyperphagic responses to western diet were met with greatly elevated levels of endocannabinoids in the small intestine and circulation. Importantly, blocking elevated endocannabinoid signaling with pharmacological inhibitors of cannabinoid receptors in the periphery completely normalized food intake and meal patterns in western diet-induced obese mice to levels found in control lean mice fed standard chow. This work describes for the first time that overeating associated with chronic consumption of a Western Diet is driven by endocannabinoid signals generated in the periphery. (more…)
Addiction, Author Interviews, Dermatology / 10.01.2017

MedicalResearch.com Interview with: Dr Anthony Bewley FRCP Consultant Dermatologist Whipps Cross University Hospital & The Royal London Hospital  MedicalResearch.com: What is the background for this study? Response: Delusional infestation (DI) is a very disabling condition, whereby patients hold a fixed, unshakeable false belief of being infested with insects or other inanimate objects such as fibres and threads. Previous studies have indicated a high rate of recreational drug use amongst patients with delusional infestation (DI). The aim of our pilot study was to look at the prevalence of recreational drug use in patients with delusional infestation who attended clinic over a three year period (Group 1). We also prospectively offered a urine drugs test to 24 consecutive patients over a three month period (Group 2). (more…)
Author Interviews, Methamphetamine / 07.01.2017

MedicalResearch.com Interview with: Zoe M. Weinstein MD Assistant Professor of Medicine, Boston University Director, Addiction Consult Service Boston Medical Center Boston MA 02118 MedicalResearch.com: What is the background for this study? What are the main findings? Response: Like other chronic, life-long medical conditions such as hypertension or diabetes, opioid use disorder (OUD) requires long-term engagement in therapy; however many individuals who participate in Office Based Addiction Treatment are not able to be retained in care long-term. This observational study followed more than 1,200 patients over 12 years with the goal of identifying patient-specific factors associated with retention in the treatment program for longer than one year. While the study found that older age, female, and co-morbid psychiatric diagnosis were associated with greater odds of treatment retention beyond one year, patients who were black or Hispanic, unemployed, and had evidence of hepatitis C viral infection were associated with decreased odds of treatment retention beyond one year. (more…)
Alcohol, Author Interviews, Heart Disease, JACC, UCLA / 02.01.2017

MedicalResearch.com Interview with: Gregory M Marcus, MD, MAS, FACC, FAHA, FHRS Director of Clinical Research Division of Cardiology Endowed Professor of Atrial Fibrillation Research University of California, San Francisco MedicalResearch.com: What is the background for this study? What are the main findings? Response: Moderate alcohol consumption has previously been associated with a decreased risk of heart attack. However, as we have previously shown that individuals who believe alcohol to be good for the heart tend to drink more, there is a concern that these previous data might appear to justify excessive alcohol consumption. In addition, previous research on the topic of alcohol consumption and heart disease has relied almost entirely on participant self-report, which is known to be particularly unreliable among heavy drinkers. Finally, previous research has sought to study relationships between alcohol and various types of heart disease, but there has not been an emphasis on individual-level characteristics that might influence these relationships. (more…)
Author Interviews, Cannabis, JAMA, Pediatrics, UC Davis / 02.01.2017

MedicalResearch.com Interview with: Magdalena Cerda, DrPH, MPH Vice Chancellor's Chair in Violence Prevention Associate Director, Violence Prevention Research Program UC Davis Violence Prevention Research Program MedicalResearch.com: What is the background for this study? What are the main findings? Response: The potential effect of legalizing marijuana for recreational use has been a topic of considerable debate since Washington and Colorado first legalized its use for adults in 2012. Alaska, Oregon and Washington, D.C., followed suit in 2014, and voters in California, Massachusetts and Nevada approved recreational use this past November. In our study, we examined changes in perceived risk of marijuana use, and in use of marijuana among school-attending adolescents, in Washington and Colorado, following legalization of recreational marijuana use, and compared pre- to post-legalization changes in these two states to changes in the 45 contiguous US states that had not legalized recreational marijuana use. Marijuana use significantly increased and its perceived harm decreased among eighth- and 10th-graders in Washington state following enactment of recreational marijuana laws. There was no change in use or perceived harm among 12th graders or among similar grades in Colorado. In particular, the data showed that legalization of recreational marijuana use significantly reduced perceptions of marijuana’s harmfulness by 14 percent and 16 percent among eighth and 10th graders and increased their past-month marijuana use by 2 percent and 4 percent in Washington state but not in Colorado. Among states without legalized marijuana use, the perceived harmfulness also decreased by 5 percent and 7 percent for students in the two grades, but marijuana use decreased by 1.3 percent and .9 percent. Among older adolescents in Washington state and all adolescents surveyed in Colorado, there were no changes in perceived harmfulness or marijuana use in the month after legalization. (more…)
Addiction, Author Interviews, Hepatitis - Liver Disease, Lancet / 27.12.2016

MedicalResearch.com Interview with: Naveed Zafar Janjua, MBBS, MSc, DrPH Senior Scientist, Clinical Prevention Services BC Centre for Disease Control Clinical Associate Professor, School of Population and Public Health University of British Columbia MedicalResearch.com: What is the background for this study? Response: Hepatitis C is a viral infection that affects the liver. About quarter of people infected with hepatitis C clear their infection spontaneously rest develop chronic infection. Left untreated, hepatitis C could results in scarring of liver (liver cirrhosis), liver cancer or death. New anti-viral drugs are highly effective in curing hepatitis C, about than 95 per cent of those treated can be cured. However, people who engage in high risk activities such as people who inject drugs (PWID) remain at risk of reinfection. As the cost of treatment is very high, re-infection is a concern among physicians and policy makers in Canada and around the world. (more…)