AHA Journals, Author Interviews, Heart Disease / 21.06.2018

MedicalResearch.com Interview with: Thomas Hadberg Lynge MD The Department of Cardiology The Heart Centre, Copenhagen University Hospital Rigshospitalet, Denmark MedicalResearch.com: What is the background for this study? Response: Congenital heart defects are common and affect ≈0.8% of all live births. Despite substantially improve survival over the past decades, morbidity and mortality remain significant, in particular among patients with complex congenital heart defects. This decreased life expectancy is in part explained by an increased risk of sudden cardiac death among people with congenital heart defects. However, the incidence of sudden cardiac death among people with congenital heart defects is largely unknown in an unselected and nationwide setting. Sudden cardiac death can occur both at rest and during exercise and it is well-known that exercise is associated with an increased risk of sudden cardiac death during activity. Fear of sudden cardiac death has led to restrictions of physical activity among patients with congenital heart defects and these patients have lower levels of physical activity compared with healthy peers. Appropriate counseling of these patients requires estimates on risk of sudden cardiac death in relation to physical activity. Nationwide fetal ultrasound screening was implemented in Denmark in 2005 and this together with improved surgical and medical treatment during the study period, is likely to have changed the epidemiology of sudden cardiac death in people with congenital heart defects. It was therefore also an important aim of the study to examine temporal changes in sudden cardiac death in people with congenital heart defects. (more…)
Author Interviews / 20.06.2018

MedicalResearch.com Interview with: Juergen Hahn,  Professor and Department Head Department of Biomedical Engineering Department of Chemical & Biological Engineering Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute  MedicalResearch.com: What is the background for this study? Response: Autism Spectrum Disorder (ASD) encompasses a large group of early‐onset developmental disorders that are collectively characterized by deficits in social interaction and communication as well as the expression of restricted, repetitive behaviors and interests. ASD is currently estimated to affect 1 in 59 children in the US. Despite this high prevalence, relatively little is know about the pathophysiology of ASD. The result of this is that no lab test exists for ASD and the diagnosis is based upon observations of the child. The average age of diagnosis is 4 years of age, but it is generally acknowledged that diagnosis at 2 years of age is possible and desirable. (more…)
Alcohol, Author Interviews, Cancer Research, PLoS / 20.06.2018

MedicalResearch.com Interview with: “Alcohol” by zeevveez is licensed under CC BY 2.0Andrew Kunzmann Research Fellow Queen's Universit Belfast MedicalResearch.com: What is the background for this study?   Response: We decided to conduct this research because the messages about the health effects linked to light-moderate drinking are less consistent. Previous studies suggest that light-moderate drinking is linked to an increased risk of cancer but a lower risk of mortality than never drinking. The international guidelines around what constitutes drinking in moderation also differ, with UK guidelines now recommending intakes below 6 pints of beer or 175ml glasses of wine per week (equivalent to less than 1 per day) but other guidelines recommending intakes of 2 drinks or less per day. We wanted to see what the risk of getting either of these conditions (cancer or mortality) were to give a more comprehensive and less confusing message about the health effects of light-moderate drinking. This was part of a well-established collaboration between Queen’s University Belfast and the National Cancer Institute in the US. We used data from a cancer screening trial in the US that contained data on over 100,000 people from the US, who were free from cancer at the start of the study and who completed a questionnaire asking how much alcohol they consumed at different periods of their adult life. This was then linked to data over an average of 9 years after they completed the questionnaire to see which individuals developed cancer or died from any cause. We then assessed whether risk of cancer and mortality differed based on lifetime alcohol intakes after accounting for a number of other factors such as age, educational attainment, smoking and dietary intakes. (more…)
Author Interviews, Biomarkers, Heart Disease, JACC / 20.06.2018

MedicalResearch.com Interview with: Martin J Holzmann MD, PhD Functional Area of Emergency Medicine Department of Internal Medicine, Solna, Karolinska Institutet Stockholm, Sweden MedicalResearch.com: What is the background for this study? What are the main findings? Response: We wanted to investigate how the introduction of the new high-sensitivity cardiac troponin T (hs-cTnT) assay affected incidence of myocardial infarction (MI) use of coronary angiography, cardiac revascularizations, and prognosis in patients with myocardial infarction. We found that the incidence of MI increased by approximately 5%, with no change in mortality, but with an 11% reduced risk of reinfarctions, and a small increase in coronary angiographies, and cardiac revascularizations by 16%, and 13%, respectively.  (more…)
Author Interviews, CDC, JAMA, NIH, Weight Research / 20.06.2018

MedicalResearch.com Interview with: Cynthia L. Ogden, PhD, MRP Chief, NHANES Analysis Branch Epidemiologist, NCHS/CDC Hyattsville, MD 20782 MedicalResearch.com: What is the background for this study? What are the main findings?  Response: 40% of adults and over 18% of youth in the US have obesity. Disparities in obesity have been reported by demographics and urbanization. We looked at the prevalence of obesity and severe obesity by demographics and by level of urbanization – rural, small/medium metro and large urban. We also looked at trends over time in urban and rural areas. Obesity and severe obesity rates were higher in rural areas than large urban areas among adults. Among youth, severe obesity rates were higher in rural areas compared to large urban areas. Differences in age, smoking, education or race/ethnicity between urban and rural areas did not explain the differences we found between urban and rural areas. Between 2001-2004 and 2013-2016 severe obesity among men in rural areas more than tripled and among women more than doubled. Increases in severe obesity also occurred in urban areas in men and women but they were not nearly as large. (more…)
Author Interviews, CMAJ, OBGYNE / 19.06.2018

MedicalResearch.com Interview with: “Birth” by Sharon Mollerus is licensed under CC BY 2.0Giulia Muraca, PhD, MPH Postdoctoral Fellow School of Population and Public Health BC Children’s Hospital Research Institute Faculty of Medicine University of British Columbia MedicalResearch.com: What is the background for this study? What are the main findings?  Response: While cesarean delivery rates have increased in Canada over the last few decades, as in most industrialized settings, the rate of forceps and vacuum deliveries have declined. These opposing trends have led to recommendations to increase forceps and vacuum delivery rates as a strategy to reduce cesarean delivery rates. We found that the rate of obstetric trauma in Canada increased significantly in recent years, especially among forceps deliveries. In first-time mothers, the rate of obstetric trauma increased by 7% among forceps deliveries (from 19.4% in 2004 to 26.5% in 2014) and in women who had a previous cesarean delivery, the rate of obstetric trauma among forceps deliveries increased by 9% (from 16.6% to 25.6%). We found that a 1% increase in the forceps and vacuum delivery rate in Canada was associated with approximately 700 additional cases of obstetric trauma and 18 additional cases of severe birth trauma annually among first-time mothers alone.  (more…)
Addiction, Annals Internal Medicine, Author Interviews, Opiods / 19.06.2018

MedicalResearch.com Interview with: Marc R. Larochelle, MD, MPH Assistant Professor of Medicine Boston University School of Medicine Boston MD  MedicalResearch.com: What is the background for this study? What are the main findings? Response: In this study we examined more than 17,000 individuals who survived an opioid overdose in Massachusetts between 2012 and 2014. We were interested in identifying how many went on to receive one of the three FDA-approved medications for opioid use disorder (MOUD), and whether or not they were associated with mortality. We found that only 3 in 10 received MOUD and that receipt of buprenorphine and methadone were associated with 40-60% reduction in all-cause and opioid-related mortality. We found no association between naltrexone and mortality though the confidence of this conclusion is limited by the small number who received naltrexone in this cohort. (more…)
Author Interviews, Pain Research, Rheumatology, Weight Research / 19.06.2018

MedicalResearch.com Interview with: Professor Steve Messier Director of the J.B. Snow Biomechanics Laboratory J.B Snow Biomechanics Laboratory Wake Forest University MedicalResearch.com: Why did you undertake this study? Response: This was a secondary analysis of the Intensive Diet and Exercise for Arthritis (IDEA) clinical trial originally published in JAMA in 2013, Volume 310, Number 12, pages 11263-1273. We were interested to see if losing 20% of your body weight had any additional benefits compared to a 10% weight loss that we previously have shown to be beneficial. (more…)
Author Interviews, Environmental Risks, Pediatrics, PLoS, Toxin Research / 19.06.2018

MedicalResearch.com Interview with: Cheryl Rosenfeld PhD DVS Professor of biomedical sciences in the College of Veterinary Medicine investigator in the Bond Life Sciences Center, and research faculty member for the Thompson Center for Autism and Neurobehavioral Disorders University of Missouri MedicalResearch.com: What is the background for this study? What are the main findings? Response: My laboratory has been examining the effects of developmental exposure to the endocrine disrupting chemical (EDC), bisphenol A (BPA) on later neurobehavioral responses in a variety of rodent models, including California mice. This species is unique in that both parents rear the pups and they have monogamous social structure, similar to most human societies. We had previously found that developmental exposure to BPA or another EDC, ethinyl estradiol (EE), disrupted later maternal and paternal care by F1 offspringto their F2 pups. Rodent pups use vocalizations both in the range of human hearing (20,000 hertz or below) and outside of the range of human hearing (20,000 hertz) to communicate with each other and their parents, and for the latter, such communications serve as a trigger to provide additional parental care in the form of nutrition or warmth to the pups. Thus, in the current studies we sought to determine if exposure of the grandparents to BPA or EE could lead to disruptions in their grandoffspring (F2 generation) pup communications that might then at least partially account for the parental neglect of their F1 parents. We found that early on female BPA pups took longer to call to their parents but later during the neonatal period they vocalized more than pups whose grandparents were not exposed to either chemical. Such vocalization changes could be due to multigenerational exposure to BPA and/or indicate that the pups are perceiving and responding to the reduced parental care and attempting but failing to signal to their F1 parents that they need more attention. (more…)
Author Interviews, Environmental Risks, Gastrointestinal Disease, Pediatrics / 18.06.2018

MedicalResearch.com Interview with: Kris R. Jatana, MD, FAAP, FACS Associate Professor Director, Pediatric Otolaryngology Quality Improvement Department of Otolaryngology-Head & Neck Surgery Nationwide Children's Hospital & Wexner Medical Center at Ohio State University MedicalResearch.com: What is the background for this study?   Response: More than 2,500 pediatric button battery ingestions occur annually in the United States. When lodged in the esophagus, rapid injury can occur from the tissue and saliva connecting the circuit of the battery. Serious injury can occur in a matter of hours. This results in a highly alkaline caustic injury that dissolves tissue, a process called liquefactive necrosis. There was a need for novel mitigation strategies to slow the progression of esophageal injury caused by presence of a button battery. This study aimed at identifying a palatable liquid that can be given at home or hospital setting to reduce esophageal injury until the battery can be removed. (more…)
AHA Journals, Author Interviews, Brigham & Women's - Harvard, Gout, Heart Disease, Rheumatology / 18.06.2018

MedicalResearch.com Interview with: “Gout in my foot” by vagawi  is licensed under CC BY 2.0Seoyoung C. Kim, MD, ScD, MSCE Associate Professor of Medicine Division of Pharmacoepidemiology & Pharmacoeconomics Division of Rheumatology, Immunology and Allergy Brigham and Women's Hospital, Harvard Medical School MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Since patients with gout are at an increased risk of cardiovascular events, we wanted to examine comparative cardiovascular safety of the two most commonly used urate-lowering drugs – febuxostat and allopurinol. Using claims data from US Medicare, we conducted a cohort study of 24,936 febuxostat initiators PS-matched to 74,808 allopurinol initiators. We found the risk of the primary cardiovascular endpoint (MI or stroke) was similar between the two groups. Analyses on secondary endpoints as well as all-cause mortality showed similar findings except that febuxostat was associated with a modestly reduced risk of heart failure exacerbation among patients with preexisting heart failure. In our sensitivity analysis, the risk of all-cause mortality associated with long-term use of febuxostat v. allopurinol appears to be increased but statistically not significant. (more…)
Author Interviews, Orthopedics, Rheumatology / 18.06.2018

MedicalResearch.com Interview with: Samuel Hawley | Research Assistant (NIHR PhD Project) | Pharmaco- and Device Epidemiology Group | Centre for Statistics in Medicine | NDORMS | University of Oxford  MedicalResearch.com: What is the background for this study? What are the main findings? Response: The aim was to disentangle some of the potential reasons for the recent decline in joint replacement rates among rheumatoid arthritis (RA) patients in the developed world. The main findings from our UK patient-level analysis indicated that joint replacement rates were not significantly different for users of TNF inhibitors versus the patients who remained only on conventional synthetic DMARDS, however we did find that TNF inhibitor use amongst older RA patients was associated with a 40% reduction in hip replacement rates. (more…)
AHA Journals, Allergies, Author Interviews, Infections, JAMA / 17.06.2018

MedicalResearch.com Interview with: “Lone Star Tick” by Katja Schulz is licensed under CC BY 2.0Jeffrey Wilson, MD, PhD Research Fellow, Allergy & Immunology University of Virginia  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Galactose-α-1,3-galactose (α-Gal) represents an oligosaccharide that is present in mammalian products and is the causal allergen in a syndrome of delayed red meat allergy (commonly called α-Gal syndrome). Sensitization to this allergen has been linked to tick bites, specifically the lone star tick in the United States. Thus, sensitization to α-Gal (and the prevalence of subjects with symptomatic red meat allergy) is relatively common where the lone star tick is common, i.e- the southeast. For a variety of reasons we hypothesized that specific immune sensitization (which relates to IgE antibody production) to α-Gal would be a risk factor for coronary artery disease. To address this possibility we measured IgE specific to α-Gal in 118 adults subjects from central Virginia who had undergone advanced cardiac imaging with a technique called intravascular ultrasound. Out of the cohort 26% of the subjects in the study had the sensitivity to α-Gal. The main finding was that subjects with the IgE sensitization to α-Gal had greater amounts of atherosclerosis, as well as atherosclerotic plaques with more unstable characteristics. This association was significant when controlled for traditional cardiovascular risk factors such as hypertension, diabetes and lipids levels. (more…)
Author Interviews, Environmental Risks, Infections, Zika / 17.06.2018

MedicalResearch.com Interview with: “Bromeliad” by Selena N. B. H. is licensed under CC BY 2.0André Wilke, Ph.D. Post Doctoral Associate Division of Environment & Public Health Department of Public Health Sciences University of Miami Miller School of Medicine Clinical Research Building Miami, Florida 33136 MedicalResearch.com: What is the background for this study? Response: As vector-borne diseases pose an increasing public health threat to communities in South Florida and elsewhere, a new study led by public health researchers at the University of Miami Miller School of Medicine has revealed that ornamental bromeliad plants contribute to breeding of the Aedes aegypti mosquito—a key culprit for the Zika outbreak that hit Miami-Dade County and other areas of Florida and the Americas in 2016. In addition to Zika, bites from the Aedes aegypti mosquito can cause dengue, yellow fever and chikungunya. Zika has been linked to microcephaly and other birth defects in unborn babies when pregnant women contract the disease. The family of diseases linked to the Aedes aegypti can cause other severe symptoms. Yellow fever can be fatal. (more…)
Author Interviews, Infections, OBGYNE, Pediatrics, Vaccine Studies / 17.06.2018

MedicalResearch.com Interview with: Sylvia Becker-Dreps, MD MPH Associate Professor, Department of Family Medicine Associate Director, Office of International Activities (Latin America Focus) Director, UNC Program in Nicaragua University of North Carolina at Chapel Hill Chapel Hill, NC 27599-7595 MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Pertussis (or whooping cough) is a respiratory infection caused by bacteria. It has been becoming more common in the US over the past two decades. Infants are more likely to be hospitalized and die of the disease. They are especially vulnerable in the first months of life because they have not yet had time to complete the DTaP vaccine series themselves. (Currently, infants receive 3 doses of DTaP at 2,4, and 6 months of age.) Immunizing mothers allows the mothers to pass antibodies against pertussis through the placenta and provide passive immunity to infants early in life. In early 2013, the CDC recommended that pregnant women receive a Tdap vaccine in every pregnancy. That recommendation was based on studies of the immune response to the vaccine, not real cases of pertussis. Our study examined clinical cases of pertussis in over 675,000 infants throughout the US. We found that in the first six months of life, infants of vaccinated mothers (those that received Tdap during pregnancy) had 75% less pertussis hospitalizations and 50% less pertussis cases overall.  (more…)
Author Interviews, Biomarkers, Rheumatology / 16.06.2018

MedicalResearch.com Interview with: Dr. Lisa van Baarsen PhD Principal Investigator at the Amsterdam Rheumatology and Immunology Cente Academic Medical Center the Netherlands  MedicalResearch.com: What is the background for this study? What are the main findings? Response: The discovery that autoantibodies can be present years before the onset of clinical symptoms of rheumatoid arthritis (RA) enables us to study autoantibody positive individuals who are at risk of developing RA. In patients with established disease the target tissue of RA, the synovial joints, is characterized by cellular infiltration and inflammation. Moreover, successful therapy decreases this synovial inflammation. In the past, our department already showed (PMID: 21177292; PMID: 24574210) that in autoantibody positive at risk individuals there is no overt cellular infiltration present in the synovium. In the current study we performed a so called discovery-based approach to investigate at a genome-wide gene expression level (using microarrays) whether the synovium is altered at a molecular level before onset of rheumatoid arthritis. Our molecular and microscopic studies on synovial biopsies obtained from autoantibody positive individuals indeed revealed interesting differences between those at risk individuals who developed disease after follow up and those who did not. (more…)
Author Interviews, Emergency Care, Opiods / 16.06.2018

MedicalResearch.com Interview with: Herbie Duber, MD, MPH, FACEP Associate Professor, Emergency Medicine Adjunct Associate Professor Department of Global Health Adjunct Associate Professor Institute for Health Metrics and Evaluation University of Washington MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Opioid use disorder (OUD) and opioid overdose deaths are a rapidly increasing public health crisis.  In this paper, we review and synthesize current evidence on the identification, management and transition of patients from the emergency department (ED) to the outpatient setting and present several key recommendations. For patients identified to haveOpioid use disorder, we recommend ED-initiated mediation-assisted therapy (MAT) with buprenorphine, an opioid agonist.  Current evidence suggests that it safe and effective, leading to improved patient outcomes.  At the same time, a coordinated care plan should be put into motion which combines MAT with a rapid transition to outpatient care, preferably within 72 hours of ED evaluation.  Where possible, a warm handoff is preferred, as it has been shown in other settings to improve follow-up.  Outpatient care should combine MAT, psychological interventions and social support/case management in order to maximize impact (more…)
Author Interviews, Rheumatology / 16.06.2018

MedicalResearch.com Interview with: Maarten Boers, MSc, MD, PhD Professor of Clinical Epidemiology Department of Epidemiology and Biostatistics VU University Medical Center--F wing MedFac Amsterdam, Netherlands MedicalResearch.com: What is the background for this study? What are the main findings? Response: Mortality in rheumatoid arthritis is increased. Recent (short-term) studies suggest the situation is improving, but in studies with long (>10-year) follow up the increased mortality persists. We have been following a trial cohort of rheumatoid arthritis patients treated right from the beginning of disease (the COBRA trial) for 23 years and now, for the first time, show normal mortality compared to the general population. (more…)
Author Interviews, Dermatology, Johns Hopkins / 15.06.2018

MedicalResearch.com Interview with: Dr. Shawn Kwatra MD Assistant Professor of Dermatology Johns Hopkins University School of Medicine  MedicalResearch.com: What is the background for this study? Would you briefly explain what is meant by prurigo nodularis?  Response: Prurigo nodularis is a skin condition where patients develop extremely itchy nodules throughout the body. Little is known about why this happens or which groups of people are predisposed to develop this condition. MedicalResearch.com: What are the main findings? Response We found that prurigo nodularis disproportionately affects African-Americans as compared to the general population. Diabetes, Hepatitis C, chronic kidney disease, and HIV are also more common in patients with prurigo nodularis than the general population or patients with other inflammatory skin diseases studied, such as atopic dermatitis and psoriasis. We also found that people with prurigo nodularis are more likely to be depressed than patients with other inflammatory skin diseases, such as atopic dermatitis or psoriasis.  (more…)
Addiction, Author Interviews, Cannabis, Mental Health Research / 15.06.2018

MedicalResearch.com Interview with: “Cannabis sativa” by Manuel is licensed under CC BY 2.0 Leen Naji, BHSc, MD Family Medicine Resident McMaster University MedicalResearch.com: What is the background for this study? What are the main findings? Response: Cannabis use has consistently been linked to suicide attempt in the general population, but little data exists linking the association between cannabis use and suicide attempt amongst patients with psychiatric disorders. This is important data as we know that patients with psychiatric disorders are both more likely to use cannabis and to attempt suicide. Therefore, our goal was to study the association between cannabis use and suicide attempt amongst patients with psychiatric disorders. Additionally, since we know that women are more likely to suffer from mental health disorders, are more likely to attempt suicide and are more likely to incur the deleterious consequences of drug use at lower doses, we sought to compare the association between cannabis use and suicide attempt in men and women amongst our study population. We conducted our analysis on a large sample of over 900 adults with psychiatric disorders (465 men, 444 women), of whom 112 men and 158 women had attempted suicide. The average age of our study sample was 40 years. We found that cannabis use is not associated with an increased risk of suicide in patients with psychiatric disorders, though this association may vary when looking at specific subpopulations and/or amount of cannabis use. For instance, we found that heavier cannabis use is associated with an increased risk of suicide attempt amongst men with psychiatric disorders. Specifically, there was a 3% increased risk of suicide attempt for every day of cannabis use per month in men with psychiatric disorders. We also found that amongst those with psychiatric conditions, women, unemployed individuals and those with a mood disorder were at increased risk of suicide attempt.   (more…)
Author Interviews, Melatonin, Sleep Disorders / 15.06.2018

MedicalResearch.com Interview with: David C. Brodner, M.D. Founder and Principle Physician, The Center for Sinus, Allergy, and Sleep Wellness Double Board-Certified in Otolaryngology (Head and Neck Surgery) and Sleep Medicine Assistant Clinical Professor, Florida Atlantic University College of Medicine Medical Director, Good Samaritan Hospital Sleep Laboratory Senior Medical Advisor, Physician’s Seal, LLC® MedicalResearch.com: What is the background for this study? Response: Melatonin is produced by the pineal gland in the brain and is the body’s natural sleep ingredient. Melatonin levels normally begin to rise in the mid-to late evening and remain high for the majority of the night. Levels begin to decline towards early morning, as the body’s wake cycle is triggered. Research shows that as people age, melatonin levels can drop by as much as 70 percent and their bodies may no longer produce enough melatonin to ensure adequate sleep. Other available products, such as immediate-release melatonin, help initiate the onset of sleep but are usually unable to sustain prolonged sleep maintenance due to an immediate burst of melatonin, which is quickly degraded due to its relatively short half-life (60 minutes). Absorption in the lower digestive tract is limited by melatonin’s limited ability to be absorbed in a low acidity or neutral pH environment. This post-marketing REMfresh® Patient Reported Outcomes DURation (REMDUR) study was designed to obtain real-world evidence about patients’ sleep patterns, duration of sleep before and after REMfresh® (CRA-melatonin™), daily REMfresh® (CRA-melatonin™) use, onset of action, sleep maintenance, quality of sleep, and overall satisfaction with REMfresh® (CRA-melatonin™). Patients with sleep disturbances in the general population who received a sample of CRA-melatonin™ (REMfresh®) from their physicians were invited to complete a 12-question survey. Survey responses were received from 500 patients. (more…)
Author Interviews, Memory, Technology / 15.06.2018

MedicalResearch.com Interview with: Eric Krokos 5th-year Ph.D. student in computer science Augmentarium visualization lab augmentarium.umiacs.umd.edu University of Maryland  MedicalResearch.com: What is the background for this study? What are the main findings? Response: I am interested in exploring the use of virtual and augmented reality in high-impact areas like education, medicine, and high-proficiency training. For VR and AR to excel as a learning tool, we felt there needed to be a baseline study on whether people would perceive information better, and thus learn better, in an immersive, virtual environment as opposed to viewing information on a two-dimensional desktop monitor or handheld device. Our comprehensive user-study showed initial results that people are able to recall information using virtual reality—there was an 8.8 percent improvement in recall ability from our study participants using VR. (more…)
Addiction, Author Interviews, Smoking, Tobacco, Tobacco Research / 15.06.2018

MedicalResearch.com Interview with: e-cigarette CDC imageDr Lynne Dawkins, PhD Associate Professor London South Bank University MedicalResearch.com: What is the background for this study? Response: Many people think that it’s the nicotine that’s harmful so they opt for using a low strength in their e-liquid. We know from tobacco smoking that when people switch to using a lower nicotine yield cigarette, they compensate in order to maintain a steady blood nicotine level by taking longer, harder drags and this can increase exposure to toxins in the smoke. We also know from some of our other work with vapers (e-cigarette users) that they tend to reduce the nicotine strength of their e-liquid over time. We therefore wanted to explore whether vapers also engage in this compensatory puffing and whether this has any effect on exposure to potentially harmful chemicals. (more…)
Author Interviews, Hand Washing, Infections, MRSA, Pediatrics / 15.06.2018

MedicalResearch.com Interview with: “Bart Infant” by Bart Everson is licensed under CC BY 2.0Gwen M. Westerling, BSN, RN, CIC Infection Preventionist Helen DeVos Children's Hospital MedicalResearch.com: What is the background for this study? Response: The setting of this study is a Level III Neonatal Intensive Care Unit (NICU) with 106 beds. In 2016, an increase in Hospital Acquired Infections (HAI) was noted in the Neonatal Intensive Care Unit (NICU) caused by Staphylococcus aureus (SA) through diligent Infection Prevention Surveillance. When we reviewed the literature we found the SA is a common skin colonizer and can be a problem for neonates with immature skin and immune systems. Staphylococcus aureus is easily transmitted through direct contact with skin, the contaminated hands of health care workers, the environment and equipment. We also found one study that listed skin to skin care as a risk factor for acquisition of SA. Before we saw the increase in infections some process changes occurred in our NICU that included increased skin to skin care, meaningful touch between neonates and parents, and two person staff care. We hypothesized that the process changes were exposing neonates to increased amounts of Staphylococcus aureus and contributing to the increase in infections. (more…)
Alzheimer's - Dementia, Author Interviews, Blood Pressure - Hypertension / 15.06.2018

MedicalResearch.com Interview with: Professor Archana Singh-Manoux, PhD, HDR Epidemiology Research Director (DR1), INSERM Honorary Professor, University College London MedicalResearch.com: What is the background for this study? What are the main findings? Response: Although there have been previous studies that have linked raised blood pressure in midlife to an increased risk of dementia in later life, the term ‘midlife’ has been poorly defined and ranged from 35 to 68 years. New findings from the long-running Whitehall II study of over 10,000 civil servants has found 50-year-olds who had blood pressure that was higher than normal but still below the threshold commonly used when deciding to treat the condition, were at increased risk of developing dementia in later life.  (more…)
Author Interviews, Biomarkers, Cancer Research, JAMA, UCSD / 15.06.2018

MedicalResearch.com Interview with Aaron Goodman, MD Hematologist/Medical Oncologist Assistant Professor of Medicine UC San Diego Health  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Response rates to PD-1/PD-L1 blockade in solid tumors are reported at 10-20%.  Remarkably, response rates of 65% to 87% have been reported in patients with refractory classical Hodgkin lymphoma treated with checkpoint inhibitors. In nodular sclerosing Hodgkin lymphoma, amplification of the chromosomal region 9p24.1, which contains the genes PD-L1 (CD274), PDCD1LG2 (PD-L2)and JAK2, is directly correlated with increased expression of these proteins on Reed–Sternberg cells. Overall, 105 of 108 (97%) biopsies from patients with newly diagnosed classical Hodgkin lymphoma have increased PD-L1 and PDCD1LG2 copy numbers.  The prevalence and utility of PD-L1amplification as a response biomarker to PD-1/PD-L1 blockade is unknown in other tumors. We sought to determine the prevalence and utility of PD-L1 amplification as a response biomarker to PD-1/PD-L1 blockade in solid tumors.  (more…)
Author Interviews, BMJ, GSK, Smoking, Tobacco, Tobacco Research / 14.06.2018

MedicalResearch.com Interview with: “Day 1 of nicotine patch, just stuffed my face with lunch at work and do NOT even want a cigarette” by David Bruce Jr. is licensed under CC BY 2.0Paul Aveyard Professor of Behavioural Medicine Nuffield Department of Primary Care Health Sciences University of Oxford Radcliffe Primary Care Building Radcliffe Observatory Quarter Oxford MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Tobacco addiction occurs because of repeated pairings of the act and sensation of smoking with binding of nicotine in the midbrain leading to release of dopamine in the nucleus accumbens. These repeated pairings create associative learning and, when brain nicotine concentrations fall, this produces a compulsion to keep using tobacco. In theory, blocking the actions of nicotine released while smoking ought to reverse this learning. One way to do this is to use a nicotine patch which provides a steady state high concentration of nicotine that desensitises the nicotinic receptors in the midbrain, making them unresponsive to nicotine from a smoked cigarette. This is the theory behind nicotine preloading. The clinical trial evidence that preloading works is equivocal, with some trials suggesting a very large therapeutic effect and others no benefit at all. In the light of both the promise and the uncertainty, we aimed to complete the largest trial to date of nicotine preloading to examine its effectiveness, safety, and tolerability. (more…)
Author Interviews, Ophthalmology, Pediatrics / 14.06.2018

MedicalResearch.com Interview with: multiple choice test takingKrista Kelly, PhD Postdoctoral Fellow Crystal Charity Ball Pediatric Vision Evaluation Center Retina Foundation of the Southwest Dallas, TX 75231 MedicalResearch.com: What is the background for this study? What are the main findings? Response: We were interested in seeing whether the fine motor deficits typically seen in amblyopia (lazy eye) and strabismus (crossed eyes) translate to an academic setting. Namely, transferring answers to a multiple choice answer form widely used in standardized testing in schools. Children with amblyopia and strabismus took about 28% longer than their peers transferring answers to a multiple choice answer form, even though they have good vision in one or both eyes.  (more…)
AHA Journals, Author Interviews, Cancer Research, Heart Disease, Smoking, Tobacco, Tobacco Research / 14.06.2018

MedicalResearch.com Interview with: “fathers day” by James Simkins is licensed under CC BY 2.0Jessica L. Fetterman, PhD Assistant Professor of Medicine Boston University School of Medicine MedicalResearch.com: What is the background for this study? What are the main findings?  Response: In our study, we studied endothelial cells, the cells that line the inside of the blood vessels. We collected endothelial cells from smokers both who use menthol and non-menthol cigarettes are impaired compared to non-smokers and we could make the non-smoker cells look like the endothelial cells of smokers by treating with menthol or eugenol (provides a clove spice-flavoring). To test a wider variety of commonly used flavoring additives, we treated cultured (outside of the body in a dish) endothelial cells with some of the most commonly used flavoring additives in tobacco products and at different concentrations/doses. We then evaluated the effects of flavoring additives by looking at measures of cell death, oxidative stress, inflammation, and the ability of the cells to produce nitric oxide, a cardio-protective chemical made by endothelial cells that is lost when the cells become damaged. We found that the flavoring additives used in tobacco products like e-cigarettes are toxic to the cells that line the blood vessels (endothelial cells). Our works suggests that the flavoring additives used in tobacco products may be harmful to the cardiovascular system. (more…)