Author Interviews, Heart Disease, JAMA, Stroke / 04.05.2016

MedicalResearch.com Interview with: Dr. Ben Freedman OAM  Deputy Director Research Strategy, Heart Research Institute/Charles Perkins Centre Professor of Cardiology, Sydney Medical School Head Vascular Biology Anzac Research Institute Honorary VMO, Concord Repatriation General Hospital University of Sydney MedicalResearch.com: What is the background for this study? Dr. Freedman: Guidelines recommend that patients with atrial fibrillation (AF) at high enough risk for stroke should be treated with anticoagulant. Anticoagulant drugs are remarkably effective in reducing stroke risk by about two thirds, and death by between a quarter and a third. Unfortunately, strokes can still occur when patients are prescribed anticoagulant for Atrial Fibrillation, and it is often presumed this residual risk of stroke represents treatment failure, though there are few data about this important issue. MedicalResearch.com: What are the main findings? Dr. Freedman: We were able to compare the risk of stroke in a cohort of patients with AF commenced on anticoagulant, with a very large closely-matched cohort seen in general practice at the same time but without AF. This is a unique comparison. We found that the residual risk of stroke in such anticoagulant-treated patients was virtually identical to that in the matched control cohort. The implication is that the residual risk of stroke may not be treatment failure, but the risk of non-cardioembolic stroke in people of a similar age and stroke risk profile but without Atrial Fibrillation. The residual risk of death in those on anticoagulant was higher than the matched controls, and intermediate between the control rate and the mortality rate for untreated AF. (more…)
Author Interviews, Education, Gender Differences, Surgical Research / 04.05.2016

MedicalResearch.com Interview with: Alison M. Fecher, MD Assistant Professor of Surgery Indiana University Health MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Fecher: It has long been known that female faculty are underrepresented in departments of surgery at U.S. medical schools. Our study wanted to identify obstacles women face in entering certain surgical subspecialties and in career advancement. We found that women are poorly represented in some of the most competitive subspecialties, including cardiothoracic and transplant surgery. We also found that women tend to advance more slowly up the career ladder, with many of them spending more years at the assistant professor level than their male counterparts. One reason for this may be that they tend to publish less peer-reviewed articles than male faculty; however, our results show that the publications of female faculty often has a greater impact on the field, as measured by citations and recentness of articles. (more…)
Author Interviews, CDC, Infections, JAMA / 04.05.2016

MedicalResearch.com Interview with: MedicalResearch.com: What is the background for this study? Dr. Fleming-Dutra: One of the most urgent public health threats of our time is the emergence of antibiotic-resistant bacteria. The use of antibiotics is the single most important factor leading to antibiotic resistance around the world.  Simply using antibiotics creates resistance.  To combat antibiotic resistance we have to use antibiotics appropriately — only when needed and, if needed, use them correctly.  In 2015, the White House released the National Action Plan for Combating Antibiotic-Resistant Bacteria (CARB), which set a goal for reducing inappropriate outpatient antibiotic use by 50% by 2020.  However, the amount of antibiotic use in the outpatient setting that is inappropriate was unknown. MedicalResearch.com: What are the main findings? Dr. Fleming-Dutra: In this study, we estimate that at least 30% of antibiotics prescribed in doctors’ offices, emergency departments and hospital-based clinics are unnecessary—meaning that no antibiotic was needed at all, which equates to 47 million unnecessary antibiotic prescriptions written annually in these outpatient settings.  Most of those unnecessary antibiotic prescriptions were written for acute respiratory conditions, a key driver of antibiotic overuse. Thus, in order to reach the White House goal of reducing inappropriate outpatient antibiotic use by 50%, a 15% reduction in overall antibiotic use in outpatient settings is needed by 2020. (more…)
Author Interviews, Genetic Research, Science / 04.05.2016

MedicalResearch.com Interview with: Lluís Ribas de Pouplana, Ph.D IRB Barcelona Barcelona 08028 MedicalResearch.com: What is the background for this study? What are the main findings? Response: Ever since the discovery of the genetic code it became obvious that the system had not grown to its full theoretical potential of making proteins with 63 different amino acids. Francis Crick called the code 'a frozen accident', but it was unclear what had actually froze it. In this article we offer an explanation to that, and we validate it experimentally. What we find is that the central pieces of the genetic code, the transfer RNAs, are unable to incorporate enough specific elements for the system to be able to use 63 of them without confusion. Since you need a new tRNA for each new amino acid, once the tRNA identification limit is reached you also reach the maximum number of usable amino acids. This limit happened to be reached at 20, and that's where it has stayed for 3 billion years. (more…)
Author Interviews, Dermatology, Heart Disease, Rheumatology / 04.05.2016

MedicalResearch.com Interview with: Lihi Eder, MD, PhD Assistant Professor of Medicine University of Toronto Scientist, Women’s College Research Institute,Room  6326 Women’s College Hospital Toronto, ON, Canada  MedicalResearch.com: What is the background for this study? Dr. Eder: Psoriasis is a chronic immune-mediated skin disease affecting 2-3% of the general population. Psoriatic arthritis (PsA) affects 15-30% of patients with psoriasis. Until recently, only few studies assessed the risk of developing cardiovascular events in patients with PsA and while most studies found a higher cardiovascular risk in these patients, others reported cardiovascular rates that were similar to the general population. (more…)
Author Interviews, Urology / 03.05.2016

MedicalResearch.com Interview with: Errol Singh, M.D. Urologist and CEO of PercuVision MedicalResearch.com: What is the background for this study? Dr. Singh: We set out to better understand the American public’s fears around Foley catheters and hopefully bring attention to the fact that hospitalizations due to infections from urinary catheters are on the rise. Interestingly enough, 20 percent of hospital patients undergo a urinary catheterization, which is the second most common procedure following intravenous therapy. The procedure, however, often leads to complications including infections mostly caused by trauma. MedicalResearch.com: What are the main findings? Dr. Singh: The main findings of the 2016 Urinary Catheter Fear Survey revealed that three out of five men (58 percent) are fearful of urinary catheterizations, while one out of every four men is very fearful of the procedure. Younger men also seem to be more fearful than their older counterparts. More than two-thirds (68 percent) of men ages 18-34 surveyed are fearful of urinary catheterizations, compared to 43 percent of males 65 and over. Clearly, females are less fearful, with 46 percent of women saying they are not fearful of urinary catheterizations, compared to 37 percent of men. It’s also important to note that half of all women surveyed say they fear the procedure, and 25 percent reporting they are very fearful. You can find more of the 2016 Urinary Catheter Fear Survey results on our website atwww.percuvision.com. (more…)
AHA Journals, Author Interviews, Duke, Geriatrics, Heart Disease, Surgical Research / 03.05.2016

MedicalResearch.com Interview with: Jessica J. Jalbert PhD From the Division of Pharmacoepidemiology and Pharmacoeconomics Department of Medicine, Brigham and Women’s Hospital Harvard Medical School, Boston, MA LASER Analytica New York, NY MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Jalbert: Landmark clinical trials have demonstrated that carotid artery stenting (CAS) is a safe and efficacious alternative to carotid endarterectomy (CEA) for the treatment of carotid artery stenosis. Clinical trials, however, tend to enroll patients that are younger and healthier than the average Medicare patient. We therefore sought to compare outcomes following CAS and CEA among Medicare patients. MedicalResearch.com: What are the main findings? Dr. Jalbert: We found that outcomes among real-world Medicare patients undergoing CAS and CEA were similar. While our results were inconclusive due to small sample size, we also found some evidence suggesting that patients over the age of 80 and those with symptomatic carotid stenosis may have better outcomes following carotid endarterectomy than CAS. (more…)
Author Interviews, Cancer Research, Dermatology / 03.05.2016

MedicalResearch.com Interview with: Orit Markowitz, MD, FAAD Director of Pigmented Lesions and Skin Cancer Assistant Professor of Dermatology Mount Sinai Medical Center, NY, NY Director of Pigmented lesions clinic Brooklyn VA, Brooklyn, NY Adjunct Professor, Dermatology SUNY Downstate Medical Center, Brooklyn, NY Chief of Dermatology Queens General Hospital, Jamaica, NY MedicalResearch.com: How common is skin cancer? Is the incidence rising in US adults?  Who is most at risk? Dr. Markowitz: The annual incidence of skin cancer is more than breast, colon, lung, and prostate cancer combined. Of the 7 most common skin cancers in the US melanoma is the only one whose incidence is increasing. The highest risk group for skin cancer are fair skin, adults with a history of sun exposure. (more…)
Author Interviews, Cancer Research, Surgical Research / 03.05.2016

MedicalResearch.com Interview with: Desiree Ratner, MD Director, Comprehensive Skin Cancer Program, Mount Sinai Beth Israel and Professor of Dermatology Icahn School of Medicine at Mount Sinai MedicalResearch.com: How big is the problem of skin cancer in the US?  Dr. Ratner: Skin cancer is an enormous problem in the United States and the numbers are increasing every year.  There are over 2 million cases of basal cell carcinoma per year, over 700,000 cases of squamous cell carcinoma per year, and over 140,000 cases of melanoma per year in the U.S. alone. MedicalResearch.com: What type of patients do you evaluate and treat? Dr. Ratner: My practice is limited to skin cancer, so most of my patients are referred to me by general dermatologists for surgery.  I see patients who require Mohs surgery for non-melanoma skin cancers, excisions for non-melanoma skin cancers, and other surgical procedures for a variety of other benign and malignant lesions. (more…)
Author Interviews, Immunotherapy, JAMA, Multiple Sclerosis, UCSF / 02.05.2016

MedicalResearch.com Interview with: Jennifer Graves, MD, PhD, MAS Adult and Pediatric Multiple Sclerosis Centers UCSF MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Graves: Cessation of medications with effects on immune trafficking may be more likely to cause rebound inflammatory activity in autoimmune diseases such as multiple sclerosis.  We observed 5 strikingly severe relapses consistent with rebound events following cessation of fingolimod treatment and identified several similar cases in the literature.  At our center the rebound events occurred with an approximate 10% frequency. MedicalResearch.com: What should clinicians and patients take away from your report? Dr. Graves: Fingolimod cessation may be complicated by rebound phenomena in some patients, similar to what has been observed with natalizumab. Both of these medications have effects on immune cell trafficking, likely explaining the association with rebound events.  Careful consideration must be taken in stopping these medications. (more…)
Alzheimer's - Dementia, Author Interviews, Depression, Lancet / 02.05.2016

MedicalResearch.com Interview with: Saira Saeed Mirza, MD, PhD Department of Epidemiology Erasmus MC, Rotterdam MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Mirza: Depressive symptoms appearing in late-life have been extensively studied for their relationship with dementia. They not only very frequently occur in demented patients, but also predict dementia. In this context, depressive symptoms have largely been assessed at a single time point only. However, depression is a disorder which remits and relapses, and symptoms do not remain same over the years. Given this pattern of disease progression, it is more important to study the course of depression over time in relation to long-term health outcomes such as dementia, rather than assessing it at a single time-point, which will neglect the course of depression. This is important as people follow different courses of depression, and different courses of depression might carry different risks of dementia. When we studied the course of depressive symptoms over 11 years in community dwelling older adults in Rotterdam, and the subsequent risks of dementia, we observed that only those who had increasing or worsening depressive symptoms were at a higher risk of dementia. In this group of people, about one in five persons developed dementia. Interestingly, people suffering from high depressive symptoms at a single time point were not at a higher dementia risk than those without depressive symptoms. (more…)
Author Interviews, Pediatrics, Vitamin D / 02.05.2016

MedicalResearch.com Interview with: Hope Weiler, RD (CDO), PhD Associate Professor Canada Research Chair tier I, Nutrition and Health Across the Lifespan, Director, Mary Emily Clinical Nutrition Research Unit School of Dietetics and Human Nutrition McGill University Macdonald Campus Ste Anne de Bellevue, QC  MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Weiler: Vitamin D is a fat soluble with important functions in growth during infancy and childhood, especially for the skeleton. It is for this reason that many policy recommendations for infants stipulate that newborn infants receive a supplemental form of vitamin D. In Canada, it is recommended by Health Canada (www.hc-sc.gc.ca) that newborn infants receive 400 international units of vitamin D from birth to a year of age or until that amount can be obtained from diet. In Canada, older children and adults can make vitamin D when their skin is exposed to direct sunlight between April and October; however, parents are advised to avoid placing their infants in direct sunlight. Thus supplemental vitamin D is particularly important in infancy. Often newborn infants begin life with low body stores of vitamin D (Weiler and colleagues, CMAJ 2005). This prompted Dr. Weiler’s research group at McGill University to test how much vitamin D is needed by newborn infants in Canada. They learned that 400 to 1200 international units of vitamin D given daily to healthy term born infants is enough to support healthy bone growth and mineral deposition (Gallo and colleagues, JAMA 2013). In conducting tests of bone health, they also learned that the amount of muscle was enhanced and fat reduced when infants had very good vitamin D stores. Vitamin D stores are reflected in the blood. Blood concentrations of a vitamin D form called 25-hydroxyvitamin D are used to establish if stores are in a healthy range. In the recent study published in Pediatric Obesity by Hazell et al, values above 75 nanomoles per litre of blood plasma were linked to lower amounts of body fat (~450 g) at 3 years of age. The 450 g difference is almost a pound of fat. This is a meaningful amount to young children where typical amounts of body fat are 10-times that equating to 4.5 kg (almost 10 pounds). Thus the lower fat is still in a healthy range. (more…)
Author Interviews, Brain Injury, JAMA, Pediatrics / 02.05.2016

MedicalResearch.com Interview with: Zachary Y. Kerr, PhD, MPH Sports Injury Epidemiologist Director, NCAA Injury Surveillance Program Datalys Center for Sports Injury Research and Prevention Indianapolis, IN 46202 MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Kerr: A 2013 Institutes of Medicine report called for more research on concussion in athletes aged 5-21 years.  Although there is much research on the incidence of concussion across this age span, there is less related to outcomes such as symptoms and return to play time, let along comparisons by age. In examining sport-related concussions that occurred in youth, high school, and college football, we found differences in the symptomatology and return to play time of concussed players.  For example, the odds of return to play time being under 24 hours was higher in youth than in college.  Also, over 40% of all concussions were returned to play in 2 weeks or more. (more…)
Author Interviews, JAMA, Lifestyle & Health, Weight Research / 02.05.2016

MedicalResearch.com Interview with: Dr. Corby K. Martin PhD Department/Laboratory: Ingestive Behavior Laboratory Director for Behavioral Sciences and Epidemiology Pennington Biomedical Research Lab Baton Rouge, LA  MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Martin: We know that calorie restriction extends the lifespan of many species and in humans calorie restriction or dieting might extend our healthspan, which is the length of time that we are free of disease. It is possible that more healthy weight or mildly overweight people might calorie restrict to improve their health, and one concern is the possible negative effects of calorie restriction on the quality of life of these individuals. This study tested if 2 years of calorie restriction affected a number of quality of life measures compared to a group that did not calorie restrict and ate their usual diet and did not lose weight. People who enrolled in the study were normal weight to mildly overweight. The study found that calorie restriction improved mood, reduced tension and improved general health and sexual drive and relationship (a measure of sexual function) over two years. Further, the more weight that people lost, the greater their improvement in quality of life. (more…)
AACR, Author Interviews, Cancer Research, Infections / 02.05.2016

MedicalResearch.com Interview with: Anala Gossai BSc, MPH PhD candidate Department of Epidemiology Geisel School of Medicine at Dartmouth, Hanover, New Hampshire and co-authors MedicalResearch.com: What is the background for this study? What are the main findings? Gossai et al: Polyomaviruses (PyV) are potentially tumorigenic viruses in humans. However, limited data exists on the population seroprevalence or longitudinal serostability of PyVs, and individual characteristics that relate to seropositivity. Further, PyVs may be associated with the occurrence of cutaneous squamous cell carcinoma (SCC) – one of the most common malignancies in humans with increasing incidence reported in the US. In a US nested case-control study, BK and JC seroreactivity was measured on 113 SCC cases and 229 matched controls who had a prior keratinocyte cancer. Repeated serum samples from controls, and both pre- and post-diagnosis samples from a subset ofsquamous cell carcinoma cases, were also assayed. Antibody response against each PyV type was measured using multiplex serology of recombinantly expressed VP1 capsid proteins. Among controls, BK and JC seroreactivity was stable over time, and there was little evidence of seroconversion following SCC diagnosis among cases. Odds of squamous cell carcinoma  associated with seropositivity to each PyV type were estimated using conditional logistic regression. JC seropositivity prior to diagnosis was associated with an elevated risk of SCC (OR=2.5, 95% CI: 1.2-5.2).  (more…)
AACR, Author Interviews, Cancer Research, Lung Cancer, Race/Ethnic Diversity, Surgical Research / 02.05.2016

MedicalResearch.com Interview with: Asal Mohamadi Johnson, PhD, MPH Assistant Professor of Epidemiology, Integrative Health Science Stetson University DeLand, FL 32723 MedicalResearch.com: What is the background for this study? Dr. Johnson: Public health research is primarily focused on neighborhood poverty and racial disparities by illustrating differences between white and black individuals or communities. For example, it has been established that African Americans have higher cancer mortality rates and are less likely to receive appropriate treatment that whites. What we wanted to know in this study was the impact of living in segregated areas apart from other area level characteristics such as poverty or education. Instead of solely looking at health disparities between whites and black patients, our study focused on differences in survival among black patients with early stage Non-Small Cell Lung Cancer (NSCLC) living in different levels of neighborhood segregation. (more…)
Author Interviews, Depression, Mental Health Research, OBGYNE, Pediatrics, Pharmacology / 02.05.2016

MedicalResearch.com Interview with: Heli Malm, MD, PhD Specialist in Obstetrics and Gynecology Teratology Information Service Helsinki University and Helsinki University Hospital  MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Malm: Animal studies have demonstrated that exposure to SSRIs during early brain development can result in depression-like behavior in adolescence. Today 6% of pregnant women in the US and 4% in Finland are on selective serotonin reuptake inhibitors (SSRIs) at some stage of pregnancy. SSRIs pass the placenta but no prior studies have followed children beyond childhood to monitor the development of depressive disorders, which typically emerge after puberty onset. Results on autism spectrum disorders (ASD) and attention-deficit/hyperactivity disorders (ADHD) have been conflicting. The study material is based on national register data from Finland. We investigated offspring psychiatric diagnoses, including depression, anxiety, ASD, and ADHD, of nearly 16,000 mothers who had used SSRIs during pregnancy between 1996 and 2010. Children in this cohort ranged in age from 0 to 15 years old. Because maternal psychiatric illness can affect offspring neurodevelopment in the absence of SSRIs, primary comparisons were made between offspring of the SSRI group and offspring of mothers with a psychiatric disorder diagnosis but no antidepressant use. Children exposed to SSRIs during gestation were diagnosed with depression at an increasing rate after age 12, reaching a cumulative incidence of 8.2% by age 15, compared to 1.9% in the group of children exposed to maternal psychiatric illness but no antidepressants. Rates of anxiety, autism spectrum disorder (ASD), and attention-deficit/hyperactivity disorder (ADHD) diagnoses did not differ significantly between the two groups. (more…)
Author Interviews, Exercise - Fitness / 02.05.2016

MedicalResearch.com Interview with: Thijs M.H. Eijsvogels, PhD Department of Physiology Radboud University Medical Center Nijmegen, The Netherlands  MedicalResearch.com: What is the background for this study? Dr. Eijsvogels: Regular exercise training is known to reduce the risk for future morbidity and mortality in the general and athletic population. For this purpose, national guidelines recommend to exercise 150 min/week at a moderate intensity or 75 min/week at a high intensity. Recent studies explored the dose-response relationship between weekly exercise volume and cardiovascular health and reported a potential U-shaped association, suggesting that high exercise volumes may attenuate the beneficial health effects. The aim of the present study was to determine the relationship between lifelong exercise dose and the prevalence of cardiovascular morbidity in a physically active population. Therefore, we collected data in 21,266  participants of the Nijmegen Exercise Study. (more…)
Author Interviews, Cancer Research, Immunotherapy, NEJM / 02.05.2016

MedicalResearch.com Interview with: Paul Nghiem, MD, PhD Professor & Head, University of Washington Dermatology George F. Odland Endowed Chair Affiliate Investigator, Fred Hutchinson Cancer Research Center Professor, Adjunct, of Pathology and Oral Health Sciences Clinical Director, Skin Oncology, Seattle Cancer Care Alliance UW Medical Center at Lake Union Seattle WA 98109   MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Nghiem: Merkel cell carcinoma (MCC) is about 30 times less common than malignant melanoma, but about 3 times more likely to kill a patient than a melanoma. There is no FDA-approved therapy for this cancer & chemotherapy typically only provides about 90 days prior to the cancer progressing. Because of the strong links between MCC and the immune system, including the fact that most MCCs are caused by a virus, there was interest in trying to use immune checkpoint therapy to treat advanced Merkel cell carcinoma. The response to immune stimulation with anti-PD1 therapy was about as frequent as to chemotherapy (56% of patients responded) but importantly, among the responders, 86% remained in ongoing responses at a median of 7.6 months.  While still early, this appears to be strikingly more durable than responses to chemotherapy. (more…)
Author Interviews, Biomarkers, Prostate Cancer / 02.05.2016

MedicalResearch.com Interview with: Stephen J. Freedland, MD Associate Director, Faculty Development Samuel Oschin Comprehensive Cancer Institute Co-Director, Cancer Genetics and Prevention Program Director, Center for Integrated Research in Cancer and Lifestyle Professor, Surgery Warschaw Robertson Law Families Chair in Prostate Cancer Cedars-Sinai, Los Angeles  MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Freedland:   PSA is a marker of prostate pathology.  While often used to screen for prostate cancer, it is not prostate specific and can be elevated due to inflammation or enlarged prostate or other reasons.  Whether it predicts the development of urinary symptoms is not clear.  Among men with minimal to no urinary symptoms, we found that the higher the PSA, the greater the risk of future development of urinary symptoms. MedicalResearch.com: What should clinicians and patients take away from your report? Dr. Freedland: The readers should know that if a man has an elevated PSA and a negative prostate biopsy, the higher the PSA, the greater the risk of future urinary symptoms.  These are men who may need closer follow-up. (more…)
Author Interviews, Epilepsy, NYU / 01.05.2016

MedicalResearch.com Interview with: Jacqueline French, MD Professor, Department of Neurology Director Translational Research& Clinical Trials Epilepsy NYU Langone Medical Center  MedicalResearch.com: What is the background for this study? Dr. French:  Tuberous sclerosis complex (TSC) is a disease associated with abnormal cell growth, caused by dysfunction of the TSC1 or TSC2 genes and dysruption of the MTOR pathway, which leads to cortical malformations, neuronal hyperexcitability, and seizures. Seizures in patients with TSC often start within the first year of life, and tend not to respond to traditional treatments. Everolimus is a marketed drug that has been used to treat other manifestations of TSC (including giant cell tumors of the brain, renal angiomyolipomas, and angiofibromas of the skin). This study was a placebo-controlled add-on study of everolimus for the treatment of refractory seizures in children and adults with epilepsy.Following an 8-week baseline phase, patients aged 2-65 years (stratified by age) with TSC and refractory seizures on 1-3 antiepileptic drugs were randomized to EVE LT or HT Cmin target ranges or placebo, and treated in an 18 week Core Phase (6-wk titration + 12-wk maintenance). Primary endpoints were change from baseline in average weekly frequency of TSC-seizures (seizures not previously shown to be generalized in onset by EEG), expressed as response rate (≥50% reduction [RR]), and percentage reduction. MedicalResearch.com: What are the main findings? Dr. French:  Overall, 366 patients were randomized to EVE LT (n=117), HT (n=130), or placebo (n=119). The median percentage reduction in TSC-seizures was significantly greater with EVE LT (29.3%, P=0.003) and HT (39.6%, P<0.001) vs placebo (14.9%). RR was also significantly greater with EVE LT (28.2%, P=0.008) and HT (40%, P<0.001) vs placebo (15.1%). The most frequent ≥10% all grade adverse events (AEs) reported with EVE LT/HT vs placebo included stomatitis (28.2%/30.8% vs 3.4%), diarrhea (17.1%/21.5% vs 5%), mouth ulceration (23.9%/21.5% vs 4.2%), nasopharyngitis (13.7%/16.2% vs 16%), upper respiratory tract infection (12.8%/15.4% vs 12.6%), aphthous ulcer (4.3%/14.6% vs 1.7%), and pyrexia (19.7%/13.8% vs 5%). Discontinuations due to AEs (5.1%/3.1% vs 1.7%) were low. (more…)
AACR, Author Interviews, Biomarkers, Cancer Research, Personalized Medicine, Stanford / 01.05.2016

MedicalResearch.com Interview with: Dr. Elodie Sollier Chief Scientific Officer at Vortex Biosciences MedicalResearch.com: What is the background for this study? What are the main findings? Response: Circulating Tumor Cell (CTC) burden may be a useful biomarker of response to targeted therapy in PDX (Patient Derived Xenograft) mouse models. Vortex Biosciences’ technology has been proven to enrich CTCs from human blood, but use of the technology with mouse blood had not yet been explored. In this poster, human CTCs are isolated with both high efficiency and purity from xenograft model of breast cancer using Vortex’s technology. Circulating Tumor Cell enumeration increased as the tumor burden increased in the mouse demonstrating its utility as a biomarker for drug treatment response. (more…)
Alzheimer's - Dementia, Author Interviews, Dermatology / 01.05.2016

MedicalResearch.com Interview with: Alexander Egeberg, MD PhD National Allergy Research Centre, Departments of Dermato-Allergology and Cardiology Herlev and Gentofte University Hospital University of Copenhagen Hellerup, Denmark  MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Egeberg: Certain proteins and inflammatory processes have been found in increased levels in the skin of patients with rosacea, and these have also been linked to dementia, in particular Alzheimer's disease. While this may be one potential explanation, we cannot say for sure that this is the cause. Our team have recently shown a link between rosacea and other neurological diseases, and single-case reports have previously described a possible association between rosacea and Alzheimers disease. However, this is the first comprehensive investigation of Alzheimer's disease in a large population of patients with rosacea. We found a slightly increased risk of dementia, in particular Alzheimer's disease in patients with rosacea. (more…)
Author Interviews, JAMA, Nutrition, Pediatrics / 01.05.2016

MedicalResearch.com Interview with: Stephen B. Freedman MDCM, MSc, Associate Professor Department of Paediatrics, Sections of Emergency Medicine and Gastroenterology; ACHRI Healthy Outcomes Theme Group Leader Alberta Children’s Hospital, and Alberta Children’s Hospital Research Institute University of Calgary, Calgary, Canada MedicalResearch.com: What is the background for this study? Dr. Freedman: As a pediatric emergency medicine physician I continue to see large numbers of children who are brought for emergency care because of vomiting and diarrhea. In speaking with their caregivers it is clear that many of them try to administer electrolyte maintenance solutions at home but the children either refuse to drink them or they continue to vomit. As a researcher I have noticed that many children continue to receive intravenous rehydration despite not being significantly dehydrated and it appeared that this was often a physician’s response to a failed oral rehydration challenge in the emergency department, either due to refusal to consume the electrolyte maintenance solution supplied or because the children became more nauseous due to the poor palatability of the solution. It appeared that perhaps a less dogmatic approach aimed at providing fluids that children actually like, might overcome these problems leading to improved outcomes. MedicalResearch.com: What are the main findings? Dr. Freedman: Children with mild gastroenteritis and minimal dehydration experienced fewer treatment failures when offered dilute apple juice followed by their preferred fluid choice compared with those instructed to drink electrolyte maintenance solution to replace fluid losses. We found the benefit was greatest in those 24 to 60 months of age. The group provided and instructed to take their preferred fluids were administered intravenous rehydration less frequently. (more…)
Author Interviews, Autism, Pediatrics, Toxin Research / 01.05.2016

MedicalResearch.com Interview with: Steven Daniel Hicks, M.D., Ph.D. Penn State Hershey Medical Group Hope Drive, Pediatrics Hershey, PA 17033  MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Hicks:  This research was inspired by results of the CHARGE study (examining environmental influences on autism) which showed that specific pesticides (including pyrethroids) increased the risk of autism and developmental delay, particularly when mothers were exposed in the 3rdtrimester. We recognized that the department of health sprayed pyrethroids from airplanes in a specific area near our regional medical center every summer to combat mosquito borne illnesses. We asked whether children from those areas had increased rates of autism and developmental delay. We found that they were about 25% more likely to be diagnosed with a developmental disorder at our medical center than children from control regions without aerial spraying of pyrethroids. (more…)
Author Interviews, Biomarkers, JAMA, Melanoma, Ophthalmology / 30.04.2016

MedicalResearch.com Interview with:
J. William Harbour, M.D.
Leader, Eye Cancer Site Disease Group
Sylvester Comprehensive Cancer Center University of Miami Miller School of Medicine
MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Harbour:  Uveal melanoma (UM) is the most common primary cancer of the eye which has the fatal tendency to metastasis to the liver. The molecular landscape of UMs have been well characterized and can be categorized by gene expression profiling (GEP) into two molecular classes associated with metastatic risk: Class 1 (low risk) and Class 2 (high risk). The Class 2 profile is strongly associated with mutations in the tumor suppressor BAP1. This GEP-based test is the only prognostic test for UM to undergo a prospective multicenter validation, an it is available commercially as DecisionDX-UM (Castle Biosciences, Inc).  It is routinely used in many North American centers. The identification of driver mutations in cancer has become a focus of precision medicine for prognostic and therapeutic decision making in oncology. In UM, thus far, only 5 genes have been reported to be commonly mutated:  BAP1, GNA11, GNAQ, EIF1AX, and SF3B1. In this study, we analyzed the associations between these 5 mutations, and with GEP classification, clinicopathologic features, and patient outcomes. The study showed that GNAQ and GNA11 are mutually exclusive, probably occur early in tumor formation, and are not associated with prognosis.  In contrast, BAP1, SF3B1, and EIF1AX, which are also nearly mutually exclusive, likely occur later in tumor formation and do have prognostic value in UM. (more…)
Author Interviews, CDC, OBGYNE, Race/Ethnic Diversity / 29.04.2016

MedicalResearch.com Interview with: Lisa Romero DrPH, MPH  Division of Reproductive Health National Center for Chronic Disease Prevention and Health Promotion CDC MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Romero: Since 2006, teen birth rates have fallen almost half among Hispanic and black teens; dropping the national teen birth rate to an all-time low. While dramatic declines among Hispanic and black teens have helped reduce gaps, birth rates remain twice as high for these teens nationally compared to white teens, and more than three times as high in some states. Data also highlight the role socioeconomic conditions play, finding that higher unemployment and lower income and education are more common in communities with the highest teen birth rates, regardless of race. This research highlights the importance of teen pregnancy prevention interventions that address socioeconomic conditions like unemployment and lower education levels, for reducing disparities in teen births rates. State and community leaders can use local data to better understand teen pregnancy in their communities and to direct programs and resources to areas with the greatest need.  To generate these findings, we analyzed national- and state-level data from the National Vital Statistics System (NVSS) to examine trends in births to American teens aged 15 to 19 years between 2006 and 2014. County-level NVSS data for 2013 and 2014 offer a point-in-time picture of local birth rates. To better understand the relationship between key social and economic factors and teen birth rates, researchers examined data from the American Community Survey between 2010 and 2014. (more…)
Author Interviews, Science, Stem Cells / 29.04.2016

MedicalResearch.com Interview with: Keir Menzies PhD Assistant Professor University of Ottawa Brain and Mind Research Institute University of Ottawa  MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Menzies: Currently there is significant amount of research identifying the power of stem cells to regenerate damaged or aging tissue. Our research discovered that reduced stem cell health was linked to unusually low levels of a small molecule called NAD, one of the most important cellular molecules to maintain the performance of mitochondria, the engine of the cell. Then by boosting NAD levels, using a special form of vitamin B3 called nicotinamide riboside, stem cells could be rejuvenated during aging by improving mitochondrial function.  We then go on to show that by improving stem cell function we could prolong the lifespan of mice, even when the treatment began at a relatively old age. (more…)