Author Interviews, Cancer Research / 21.12.2015

MedicalResearch.com Interview with: Amye Tevaarwerk, M.D. Assistant Professor of Medicine Hematology/Oncology Section University of Wisconsin School of Medicine and Public Health Carbone Comprehensive Cancer Center Wisconsin Institute for Medical Research (WIMR) Madison, WI  Medical Research: What is the background for this study? What are the main findings? Dr. Tevaarwerk: These patients were enrolled on a larger clinical trial known as the Symptom Outcomes and Practice Patterns study (SOAPP). SOAPP recruited breast, prostate, colon and lung cancer patients directly during outpatient oncology follow-up visits. All of the patients were recruited between May 2006 and May 2008. The parent study recruited 3123 patients, of these 680 patients had metastatic disease and 668 had employment data. Patients were asked if they were working and if there had been a change due to illness. We were able to compare those stably working with those who had changed to "no longer working" and look at factors that associated with this change (age, gender, cancer type, race/ethnicity, time since diagnosis, location of metastatic disease, type of treatment, performance status, number of metastases, symptom burden.) (more…)
Author Interviews, Brigham & Women's - Harvard, Diabetes, Nutrition / 20.12.2015

MedicalResearch.com Interview with: Dr. Qi Sun Sc.D Assistant Professor Department of Nutrition Harvard T.H. Chan School of Public Health Boston, Massachusetts  Medical Research: What is the background for this study? What are the main findings? Dr. Qi Sun: Potato is considered as a vegetable in certain dietary recommendations, such as in the U.S. MyPlate food guide, whereas in the U.K. national food guide, potato is grouped with cereal as sources of carbohydrates. Potato foods are typically higher in glycemic index and glycemic load, but data are rare regarding whether individual and total potato foods are associated with chronic diseases. In this analysis, we focused on diabetes and found that a higher consumption of total potato foods and individual potato foods, especially french fries, was associated with an increased risk of developing type 2 diabetes in three large cohort studies of ~200 thousand U.S. men and women. In addition, we found that increased potato food consumption over time was associated with a subsequent increased risk of developing diabetes. (more…)
Author Interviews, Dermatology, FDA, Melanoma, NYU / 19.12.2015

MedicalResearch.com Interview with: Dr. Jennifer Stein MD Associate Professor Department of Ronald O. Perelman Department of Dermatology NYU Langone Medical Center Medical Research: What is the background for this FDA decision? What is the issue surrounding tanning beds? Dr. Stein:  This is an important proposal from the FDA because it restricts minors from tanning and requires adults to sign an acknowledgement stating they have been informed about the risks of tanning. There is clear evidence that indoor tanning significantly increases a person’s risk for skin cancer, including melanoma, a potentially deadly form of skin cancer. It is important to protect young people from the dangers of tanning beds, especially because many patients report that they started indoor tanning as teens. There are 1.6 million minors using tanning beds every year. MedicalResearch: What is the problem with tanning?  Isn't a tan better than a sunburn? Dr. Stein: Tanning beds deliver intense amounts of UVA. We know that UVA penetrates deep into the skin and causes mutations that lead to skin cancers, including melanoma. Tanning is a sign that skin cells have been damaged by UV light. (more…)
Author Interviews, Nutrition, Schizophrenia / 19.12.2015

MedicalResearch.com Interview with: Zoltan Sarnyai, M.D., Ph.D. Associate Professor of Pharmacology Head, Laboratory of Psychiatric Neuroscience Australian Institute of Tropical Health and Medicine (AITHM) Comparative Genome Centre Centre for Biodiscovery and Molecular Development of Therapeutics James Cook University Townsville, Australia Medical Research: What is the background for this study? Dr. Sarnyai: Schizophrenia has long been conceptualized as a disease contributed by the increased activity of the neurotransmitter system that provides dopamine for the brain. All clinically used antipsychotic drugs inhibit dopamine transmission in the brain by blocking dopamine receptors. These drugs have only a limited efficacy on a certain set of symptoms associated with schizophrenia. More recent research has uncovered that abnormal glucose and energy metabolism in the brain may contribute in the development of schizophrenia. This is not altogether surprising considering that our brain is using a disproportionately high amount of glucose to fuel neurotransmission (cell-to-cell communication in the brain), to maintain normal electrical activity of nerve cells and to deal with damaging free oxygen radicals. Therefore, even relatively small changes in the machinery that is required to provide energy for the brain cells can have very significant impact on brain function. In fact, recent studies have identified altered expression of genes and proteins that are responsible for enzymatic breakdown of glucose and proper handling of the metabolites to create the energy-rich molecule ATP. In addition, recent research shows decreased number and impaired function of the mitochondria, the powerhouses of the cell, in the brain of individuals with schizophrenia.  These recent results that show abnormal energy metabolism in schizophrenia raise the possibility of targeting metabolic pathways for therapeutic benefit in this condition. Ketogenic diet provides and alternative source of energy to the brain through fatty acids. Furthermore, since this diet is very low in carbohydrates, almost all the energy needs of the cells comes from breaking down fat (fatty acids) as opposed to glucose. This can circumvent the classic glucose metabolic pathways that maybe impaired in the disease. Also, breaking down fatty acids produces 40% more of the energy-rich molecule ATP than breaking down the carbohydrate glucose. Altogether, ketogenic diet may provide extra energy and can help neurotransmission in the brain, leading to the improvement of neurobiological processes underlying schizophrenia. (more…)
Author Interviews, Cost of Health Care, Medicare / 18.12.2015

MedicalResearch.com Interview with: Thomas Selden, Ph.D. Director of the Division of Research and Modeling Center for Financing, Access, and Cost Trends Agency for Healthcare Research and Quality (AHRQ), in Rockville, Maryland.  Medical Research: What is the background for this study? What are the main findings? Dr. Selden: Spending on hospital care is expected to exceed $1 trillion for the first time in 2015, and it is important to understand the differences between public and private payment rates if we want to achieve the goals of better care, smarter spending, and healthier people – the triple aims found in HHS’ National Quality Strategy.  Our study examined data on inpatient hospital stays between 1996 and 2012, finding that payments to hospitals from private insurers in 2012 were 75 percent greater than Medicare’s – a sharp increase from the approximate 10 percent difference between 1996 and 2001.  (more…)
Author Interviews, Cancer Research, CDC / 18.12.2015

MedicalResearch.com Interview with: S. Jane Henley, MSPH Division of Cancer Prevention and Control National Center for Chronic Disease Prevention and Health Promotion CDC Medical Research: What is the background for this study? What are the main findings? Response: Many factors contribute to changes in cancer incidence, including changes in risk exposures or changes in the use of cancer screening tests. To monitor changes in cancer incidence and assess progress toward achieving Healthy People 2020 objectives, we analyzed data from U.S. Cancer Statistics (USCS) which includes high quality incidence data from CDC’s National Program of Cancer Registries (NPCR) and the National Cancer Institute’s Surveillance, Epidemiology, and End Results (SEER) program and survival data from NPCR. This study updates a previous study, using the latest available data on population-based cancer incidence and survival. We found that about 1.5 million new cancer cases were reported in the US in 2012, and rates of prostate, lung, and colorectal cancer were lower than in 2011. The rates of getting cancer were higher among men than women, highest among black people, and varied by state from 371 to 515 per 100,000 people. The most common kinds of cancer were prostate, female breast, lung, and colorectal. About two of every three people who were diagnosed with cancer lived five years or more after diagnosis. (more…)
Author Interviews, PLoS, Urinary Tract Infections / 18.12.2015

MedicalResearch.com Interview with: Dr Sandra A. Wilks PhD Senior Research Fellow IfLS Knowledge Mobilisation Fellow in Healthcare Technologies Faculty of Natural and Environmental Science & Faculty of Health Sciences Centre for Biological Sciences, University of Southampton, Southampton, UK  Medical Research: What is the background for this study? What are the main findings? Dr. Wilks: The use of indwelling Foley urinary catheters for extended periods of time results in high risks of urinary tract infections (UTI) and catheter blockages. Blockages are often caused by the presence of Proteus mirabilis, a urease-producing bacterium which results in an increase of the urine pH and the development of crystalline biofilms. Biofilms develop when bacteria attach to a surface, forming a community structure, held together by extracellular polymeric substances (EPS). Once in a biofilm, bacteria exhibit high resistance to the action of antibiotics and are protected by other stress factors. The crystalline biofilms resulting from the presence of Proteus are highly complex environments and cause complete blockage of the catheter within days. Such blockages cause pain and trauma for patients, and result in high demands on healthcare resources. In this study, we have used an advanced microscopy technique (episcopic differential interference contrast, EDIC microscopy developed by Best Scientific) to track the development of these crystalline encrustations on two commonly used catheter materials; silicone and hydrogel latex. We have identified four distinct stages to crystalline biofilm formation;
  • (1) an initial foundation layer (conditioning film) formed by individual 'colonising' P. mirabilis cells, which occurred in less than 1 hour;
  • (2) this was rapidly followed by a sheet-like microcrystalline material (after 24 hours) that covers this conditioning film;
  • (3) after 4 days exposure, large amounts of crystalline material was seen to extend out from the surface with;
  • (4) defined struvite crystals embedded within the structure and P. mirabilis visible throughout. This pattern was the same on both materials.
(more…)
Author Interviews, Pediatrics, UCSD, Weight Research / 17.12.2015

MedicalResearch.com Interview with: Geert W. Schmid-Schonbein, Ph.D. Distinguished Professor and Chairman Department of Bioengineering Adjunct Professor in Medicine University of California San Diego Medical Research: What is the background for this study? What are the main findings? Dr. Schmid-Schonbein: Most approaches to control/reduce body weight focus on reducing food quantity, improving quality and promoting daily activity. These approaches, effective in the short term, only yield modest weight control. Weight management strategies recommended in the past have not significantly diminished the current trend towards childhood and adolescence obesity. We developed and tested an alternative approach to control weight gain in healthy individuals to reduce the risk for development of obesity and diabetes complications. The essence is to: “Eat deliberately slow AND stop eating when you feel no longer hungry”. The approach avoids any form of special diet, uses no drugs, can be adopted for a lifetime and used in any ethnic environment. Children in a Mexican School in Durango were instructed by a pediatrician to learn to eat deliberately slow and to stop eating when the satiety reflex sets in, i.e. the moment when the feeling of hunger has disappeared. They were instructed to:
  • quench the thirst at the beginning of a meal with water,
  • use a portable 30 second hourglass sand timer,
  • take a bite only when the sand timer was turned, and
  • stop eating when they were no longer hungry (as compared to feeling of fullness), and
  • limit food consumption after the point of satiety.
Over a one-year period, children not using the hourglass excessively increased their body-mass index, while in contrast children using the hourglass grew normally their body-mass index. Body surface area and waist hip ratio followed the same trend. The study shows feasibility of regulating food intake by education that is directed at developing slow eating habits and cessation of eating at satiety. A combination of behavioral training and focused eating monitoring may constitute a weight control method that may serve a life-time and can be promoted for children and adolescents at moderate costs, on a national basis. (more…)
Author Interviews, Heart Disease, JACC, Surgical Research / 17.12.2015

MedicalResearch.com Interview with: Dr Gerry McCann MD Reader in Cardiovascular Imaging Department of Cardiovascular Sciences University of Leicester Leicester UK Medical Research: What is the background for this study? Dr. McCann:  Cardiologists increasingly treat patients who suffer a large heart attack with an emergency procedure performed under local anaesthetic. The blocked artery that causes the heart attack is opened by inserting a small metal stent at the blockage. Up to 50% of patients treated in this way also have other narrowed heart arteries. Two recent studies (PRAMI and CvLPRIT) in patients with heart attacks and multiple narrowed arteries have suggested that treating all of the narrowed arteries (complete revascularization) may be better than just treating the blocked artery. However, there is concern that the longer procedure, and putting in more stents, may cause more injury to the heart. Medical Research: What is the background for this study? What are the main findings Dr. McCann:  We studied 203 patients having a heart attack who were randomly assigned to have only the blocked artery opened (105 patients) or complete revascularization during the initial hospitalization (98 patients) in the CvLPRIT study. We assessed the size of the heart attack and any smaller areas of damage using MRI scanning. Patients who were treated with complete revascularization were more likely to have evidence of more than 1 heart attack on the MRI than if only the blocked artery was treated (22% vs. 11% of patients). However, these additional heart attacks were generally small and the total percentage of the heart that was damaged was not increased (12.6% vs. 13.5%). The pumping function of the heart measured 3 days and 9 months after treatment was also similar with both treatments. (more…)
Author Interviews, Heart Disease, NEJM, Surgical Research / 17.12.2015

MedicalResearch.com Interview with: Dr. Jochen Reinöhl Consultant and Head of the ISAH team (intervention for structural and congenital cardiovascular diseases) Department of Cardiology and Angiology I  (Medical Director: Prof. Dr. Christoph Bode) University Heart Center Freiburg ∙ Bad Krozingen Medical Research: What is the background for this study? What are the main findings? Dr. Reinöhl: Aortic valve stenosis is a medical condition with very high short-term mortality. Previously its only treatment – therefore the gold standard – consisted of surgical valve replacement. Since 2007 transcatheter aortic-valve replacement (TAVR) can be considered alternative. Its impact on clinical practice, however, is largely unknown. TAVR numbers rose from 144 in 2007 to 9,147 in 2013, whereas surgical aortic-valve replacement procedures only marginally decreased from 8,622 to 7,048. For both groups in-hospital mortality, as well as, the incidence of stroke, bleeding and pacemaker implantation (but not acute kidney injury) decreased. (more…)
Author Interviews, Cancer Research, Genetic Research, Nature / 17.12.2015

MedicalResearch.com Interview with: Dr. Li Ding PhD Director, Medical Genomics group McDonnell Genome Institute Department of Medicine Washington University in St. Louis St. Louis, Missouri Medical Research: What is the background for this study? What are the main findings? Dr. Li Ding:  Next-generation sequencing technologies have provided unprecedented opportunities for building a comprehensive catalog of point mutations, simple insertion and deletion mutations (indels) and structural variants in human cancers. Although significant progress has been made for documenting these common events through studies from individual research labs and large consortiums, there has been little progress in the discovery of complex indels after the transition from Sanger sequencing to NGS technologies.  It is well known in the scientific community that indel detection using short next generation sequencing reads is a challenging problem. Our study, for the first time, directly addresses complex indel detection that has been barely touched in the cancer field. More importantly, our analysis discovered 285 complex indels in cancer genes such as PIK3R1, GATA3, and TP53, revealing an unexpected high prevalence of these events in human cancers. (more…)
Author Interviews, Cost of Health Care, Emory, Infections, Pharmacology / 17.12.2015

MedicalResearch.com Interview Questions Carlos del Rio, MD Chair, HIV Medicine Association Department of Medicine Hubert Professor and Chair of the Department of Global Health at the Rollins School of Public Health Professor of Medicine in the Division of Infectious Diseases Emory University School of Medicine MedicalResearch.com Editor's note:  Dr. Carlos del Rio discusses the statement from the Infectious Diseases Society of America (IDSA), HIV Medicine Association (HIVMA) and the Pediatric Infectious Diseases Society (PIDS) regarding the news that Express Scripts is taking steps to improve access to obtaining pyrimethamine for patients with toxoplasmosis. Medical Research: What is the background for this Express Scripts announcement? Dr. del Rio: The HIV Medicine Association (HIVMA) and the Infectious Diseases Society of America initially heard from our members (ID and HIV clinicians) in August about the 5000% price increase in Daraprim® (from $13.50 to $750 per tablet) following Turing Pharmaceuticals’ acquisition of the rights to distribute Daraprim® from Impax Laboratories, Inc.[1] ID and HIV clinicians told us they had been having difficulties obtaining pyrimethamine since earlier in the summer when Impax implemented a controlled distribution system making the drug available only through Walgreen’s Specialty Pharmacy. Despite HIVMA, IDSA and others urging Turing to reverse the price hike, no action was taken and providers continued to report the scarcity of the drug due to the cost and issues with the distribution system. [2] Due to these ongoing challenges, HIVMA and IDSA thought it was important to provide information to our members and other providers regarding the new lower cost option so they could evaluate this option in consultation with their patients. Initially Turing agreed to reconsider the price increase and to lower it; however, on Nov. 24th Turing announced that they would not lower the list price of Daraprim but instead planned to offer discounts of up to 50% to some hospitals. [3] The announcement reinforced the urgent need for affordable treatment options and failed to address that a majority of the eight to twelve month treatment course occurs on an outpatient basis. (more…)
Author Interviews, Breast Cancer, Cancer Research, Depression / 17.12.2015

MedicalResearch.com Interview with: Ruhi Kanani  Cancer Epidemiology and Population Health Research Oncology King's College London London, UK  MedicalResearch.com: What is the background of this study? What are the main findings? Response: There is a long history of research investigating the possible association between psychological and physical health. This study is the first to analyse cancer registration information and hospital records of depression for a large group of women with breast cancer in South East England. 77, 173 women diagnosed with breast cancer between 2000 and 2009 were included and followed until the end of 2010. 955 women had a record of depression, 422 before, and 533 in the year after their cancer diagnosis. The results showed that women with a record of depression had a worse overall survival. This was particularly so for those with a  new record of depression after the cancer diagnosis, who had a 45% higher risk of death from all causes compared to those who didn’t develop depression after their cancer diagnosis. (more…)
Author Interviews, Cancer Research, Clots - Coagulation, Sloan Kettering / 16.12.2015

MedicalResearch.com Interview with: Luke V. Selby, MD Research Fellow, Department of Surgery Vivian E. Strong, MD FACS Associate Attending Surgeon, Department of Surgery Memorial Sloan Kettering Cancer Center Medical Research: What is the background for this study? What are the main findings? Response: There was strong concern at our institution about the safety of providing pre-operative Venous Thromboembolism (VTE) chemoprophylaxis (in addition to our standard peri and post-operative prophylaxis) was unsafe.  To answer this question we administered a single dose of either low molecular weight heparin or unfractionated heparin to all eligible surgical patients at our institution over a six month period. When compared to identically selected patients operated on during the preceding 18 months, patients who received the pre-operative VTE chemoprophylaxis did not have higher rates of bleeding complications and had lower rates of DVT and pulmonary embolism (PE). (more…)
Author Interviews, Cost of Health Care, Education, JAMA / 16.12.2015

MedicalResearch.com Interview with: Lorette A. Stammen, MD Department of Educational Development and Research Faculty of Health, Medicine, and Life Sciences Maastricht University, Maastricht The Netherlands Medical Research: What is the background for this study? What are the main findings? Dr. Stammen: Research indicated that we can improve the quality of care and reduce the health care costs by eliminating health care waste. Health care waste are health care services that are not beneficial to patients. There are many ways to reduce health care waste, like through insurance and government policies modification,  but we were especially interested in how the medical expertise of physicians could improve high-value, cost-conscious care. We conducted a systematic review with the aim of understanding how training programs cause learning among physicians, residents and medical students. We analyzed 79 articles using realist review method and found three important factors that facilitate the learning of physicians (in training).
  • First, educational programs should focus on knowledge transmission. Knowledge that is essential entails knowledge regarding prices and general health economics, scientific evidence, and patient preferences.
  • Besides knowledge, the second factor of training for high-value, cost-conscious care is reflective practice. Reflective practice for example using feedback and asking reflective questions, by peers, colleagues and supervisors to reflect on decisions made in daily practice.
  • The third element of training programs should address an supportive environment in which physicians, residents and medical students learn. A supportive environment is important to cultivate the importance of high-value, cost-conscious care on multiple levels in the health care system. Since physicians are a part of a health care team their training programs should incorporate the training of health care professionals.
  • Furthermore, it is important that role models demonstrate high-value cost-conscious care.
(more…)
Author Interviews, JAMA, Pediatrics, Surgical Research / 16.12.2015

MedicalResearch.com Interview with: Dr. Peter C. Minneci, M.D., MHSc Center for Innovation in Pediatric Practice Assistant Professor, Pediatric Surgery The Ohio State's Wexner Medical Center Medical Research: What is the background for this study? What are the main findings? Dr. Minneci: Non-operative management of uncomplicated appendicitis has been shown to safe and effective studied in several international adult trials. To be a reasonable treatment alternative to urgent appendectomy, non-operative management of appendicitis in children must have a clinically acceptable success rate with minimal harm in patients that fail and subsequently undergo appendectomy. We performed a prospective single-institution patient choice trial allowing the families of children with acute uncomplicated appendicitis to choose between urgent appendectomy or non-operative management with antibiotics alone. We enrolled 102 patients, with 65 choosing surgery and 37 choosing non-operative management with antibiotics alone. Non-operative management had an in-hospital success rate of 94%, a 30-day success rate of 89%, and a 1-year success rate of 76%. Compared to the surgery group, patients managed non-operatively reported higher quality of life scores at 30 days and had significantly fewer disability days and lower costs, with no differences in the rates of complicated appendicitis or treatment-related complications at 1 year of follow-up. With this being said, there are some cases that I have read about where doctors have failed to diagnose patients for Appendicitis even after they have complained about having a number of the symptoms associated with it. Following this, some patients have even contacted companies like Negligence Claimline to get back what they deserve. You go to doctors as they are the ones who can help you get your health back in order, but when something like this happens, it is understandable as to why some people lose faith in this system. (more…)
Author Interviews, BMJ, Mental Health Research / 16.12.2015

MedicalResearch.com Interview with: Dr. Rashmi Patel MA (Cantab) MA BM BCh PGDip (Oxon) MRCPsych Psychiatry King's College London, London  Medical Research: What is the background for this study? What are the main findings? Dr. Patel: Antidepressants are a safe and effective treatment for depression. However, in a minority of cases, people who take antidepressants can also develop symptoms of elevated mood and mania as part of a bipolar disorder. This is important because although bipolar disorder is uncommon, people who are affected often first present with symptoms of depression and, if left untreated, bipolar disorder can be very distressing and significantly affect social and occupational functioning. In our study we investigated the association of antidepressants with mania in people with depression receiving care from the South London and Maudsley NHS Foundation Trust, a large provider of specialist mental healthcare in South London (UK). We found that antidepressants were widely prescribed and associated with a small increased risk in developing mania. However, we did not demonstrate a causal association between antidepressants and mania. Instead, it is likely that people who developed symptoms of mania with antidepressants already had a propensity towards developing mania prior to antidepressant treatment. (more…)
Author Interviews, Gastrointestinal Disease, JAMA, Stem Cells / 16.12.2015

MedicalResearch.com Interview with: Dr. Chris J. Hawkey, DM, FRCP, FMedSci. University of Nottingham and Nottingham University Hospital England Medical Research: What is the background for this study?  Dr. Hawkey: ASTIC (The Autologous Stem Cell Transplantation International Crohn's Disease) systematically investigated the effect of immunoablation and autologous haemopoietic stem cell transplantation (HSCT) on objective signs of disease, symptoms and need for treatment and is the only controlled trial to have done so. The body’s immune system normally protects us from infections but in Crohn’s disease it turns on itself.  The treatment involves wiping out the body’s immune system (immunoablation) and replacing it with the patient’s own (autologous haemopoietic stem cell transplantation) innocent stem cells, a sort of immunological spring clean. Patients were randomly assigned to undergo transplantation (n=23) or just continue on best conventional treatment (n=22). ASTIC was stimulated by reports which suggested that long-term regression of disease amounting to potential cure could be achieved. But the treatment is hazardous with major potentially lethal risks, so recruitment to the trial was cautious and only the most resistant cases were studied. And we used the most stringent criteria ever developed for the trial’s primary endpoint. Medical Research: What are the main findings?  Dr. Hawkey: In fact the criteria we used for success were so stringent (no symptoms, no signs of disease on total bowel examination and no need for treatment) that few patients achieved them. Nevertheless, there were improvements in the individual measures underlying this composite endpoint. Objective signs of disease disappeared so that the gut looked normal from mouth to anus in about a quarter of actively treated patients vs no controls. Eight vs two patients were adjudicated free of active disease on endoscopy and radiology at final assessment (p=0.054). Patients were able to come off drug treatments: by the end of a year 61% of HSCT patients off immunosuppressive drugs for >3 months vs 23% of controls (p=0.012). Ten vs two patients had lost symptoms of active disease, eight vs two for of them for > 3 months (p=0.052). But treatment was challenging: there were 76 serious adverse events in HSCT patients (particularly infections) vs 38 in controls. One HSCT patient died. (more…)
Author Interviews, Brain Cancer - Brain Tumors, Cancer Research, JAMA / 16.12.2015

MedicalResearch.com Interview with: Roger Stupp, MD Professor & Chairman Department of Oncology & Cancer Center University of Zurich & University Hospital Zurich (USZ) Zürich / Switzerland Medical Research: What is the background for this study? Dr. Stupp: Tumor Treating Fields are an entirely novel modality in cancer treatment. Over 10 years ago researchers demonstrated that alternating electrical fields will block cell growth, interfere with organelle assembly, in particular perturb the spindle apparatus and cell division, all leading to mitotic arrest and ultimately apoptosis. This was shown in vitro, but importantly also in vivo animal models including not only mice and rats, but also hamsters and rabbits with deep seated solid tumours. So the question was whether we can demonstrate such an effect also in the clinic. Glioblastoma are locally invasive and aggressive tumours in the brain. They usually do not metastasise however they grow diffusely within the CNS and despite the best possible surgery, radiation and chemotherapy virtually always recur. We thus applied alternating electrical fields therapy, so called Tumor Treating Fields to the scalp of patients with newly diagnosed glioblastoma. After the end of standard chemoradiotherapy (TMZ/RT), patients were randomized to receive either standard maintenance TMZ-chemotherapy alone or in combination with TTFields. Almost 700 patients were randomized, here we report on a preplanned interim analysis looking at the first 315 patients included once they were followed for at least 18 months. The data on the first 315 patients are mature and allowed the IDMC to conclude that the trial should be stopped and the results made available. Medical Research: What are the main findings? Dr. Stupp: The study demonstrated a consistent prolongation of both progression-free and also of overall survival for patients who have been treated with TTFields in addition to standard therapy. The median progression-free survival and overall survival were prolonged by 3 months, translating to an absolute increase in overall survival at 2 years of 14%, from 29% to 43%. Or a hazard ratio of 0.74 for overall survival and of 0.62 for progression-free survival. (more…)
Allergies, Author Interviews / 16.12.2015

MedicalResearch.com Interview with: Meghan Jeffres, PharmD Assistant Professor | Dept of Clinical Pharmacy Skaggs School of Pharmacy and Pharmaceutical Science University of Colorado Anschutz Medical Campus Aurora, CO 80045  Medical Research: What is the background for this study? What are the main findings? Dr. Jeffres: There are over 500,000 hospitalizations annually in the U.S. in which patients will have a reported allergy against first line antibiotics. Beta-lactams are the largest group of antibiotics which include penicillins, cephalosporins, and carbapenems. These antibiotics are the first line treatment against most serious bacterial infections; however, they are also the class of antibiotics to which patients are most commonly allergic. Patients labeled as allergic to one of these antibiotics are often prescribed second line antibiotics. Previous studies have shown that the use of second line antibiotics are more expensive, result in more adverse events, and longer hospital stays. We theorized that patients labeled as penicillin, cephalosporin, or carbapenem allergic treated with non-beta-lactams would have higher rates of clinical failure, but lower rates of allergic reactions, than patients treated with beta-lactams. Analysis of the data revealed that patients treated with non-beta-lactams did indeed have higher rates of clinical failure. Unexpected findings of the study were the low number of new allergic reactions which occurred in 16 patients, less than 3% of the study population. (more…)
Author Interviews, Genetic Research, Methamphetamine, PLoS / 16.12.2015

MedicalResearch.com Interview with: Camron D. Bryant, Ph.D. Assistant Professor Laboratory of Addiction Genetics Department of Pharmacology and Experimental Therapeutics & Psychiatry Boston University School of Medicine Boston, MA 02118  Medical Research: What is the background for this study? What are the main findings? Dr. Bryant: The addictions, including addiction to psychostimulants such as methamphetamine and cocaine, are heritable neuropsychiatric disorders. However, the genetic factors underlying these disorders are almost completely unknown. We used an unbiased, discovery-based genetic approach to fine map a novel candidate genetic factor influencing the acute stimulant response to methamphetamine in mice. We then directly validated the causal genetic factor using a gene editing approach. The gene - Hnrnph1 (heterogeneous nuclear ribonucleoprotein H1) - codes for an RNA binding protein that is involved in alternative splicing of hundreds of genes in the brain. Based on a genome-wide transcriptome analysis of differentially expressed genes within the striatum -  a crucial brain region involved in the stimulant properties of amphetamines - we predict that Hnrnph1 is essential for proper neural development of the dopamine circuitry in the brain. These findings could have implications for understanding not only the addictions but also other neuropsychiatric disordersthat involve perturbations in the dopaminergic circuitry. (e.g., ADHD and schizophrenia) as well as neurodegenerative disorders such as Parkinson's disease. (more…)
Aging, Author Interviews, Breast Cancer / 16.12.2015

MedicalResearch.com Interview with: Susan K. Boolbol, MD, FACS Chief, Division of Breast Surgery Chief, Appel-Venet Comprehensive Breast Service Co-Director, Breast Surgery Fellowship Mount Sinai Beth Israel Associate Professor of Surgery Icahn School of Medicine at Mount Sinai New York, NY 10003  Medical Research: What is the background for this study? What are the main findings? Dr.Boolbol:  The background for this study is predicated on the USPSTF's recommendations that there is insufficient evidence to continue the use of screening mammography in women over the age of 75. According to the American College of Radiology, cancer detection rates via screening mammography should be at least 2.5 per 1000 mammograms at an institution, with reported rates as high as 4.7 cases per 1000. We reviewed 2057 screening mammograms in women aged 75 and older. We found 10 cases of breast cancer in this group. Of these cancers, 60% were invasive breast cancer. The breast cancer detection rate in this cohort was 4.9 per 1000 screening mammograms. (more…)
Author Interviews, Dermatology, Pediatrics / 16.12.2015

MedicalResearch.com Interview with: Dr Alison Cooke PhD, MRes, BMidwif (Hons), RM Lecturer in Midwifery (Teaching and Research) School of Nursing, Midwifery & Social Work The University of Manchester Oxford Road Manchester  Medical Research: What is the background for this study? What are the main findings? Dr. Cooke: The use of topical oils for the management of newborn dry skin or for massage is a common practice across the globe. In the UK, olive oil and sunflower oil are commonly recommended by maternity service health professionals for baby dry skin, yet there is no evidence to support this practice. The OBSeRvE study was conducted to investigate the effect of these two oils on healthy term newborn baby skin barrier function. The study found that both oils impeded the development of the skin barrier function from birth. (more…)
Author Interviews, Cognitive Issues, Weight Research / 16.12.2015

MedicalResearch.com Interview with: Dr Anne Martin PhD Research Associate/Research Fellow Physical Activity for Health Research Centre (PAHRC) Institute for Sport, PE & Health Sciences University of Edinburgh TeleScot Research Group Usher Institute for Population Health Sciences and Informatics Edinburgh Medical Research: What is the background for this study? What are the main findings? Dr. Martin: Impairments in cognitive development during childhood can have detrimental effects on health behaviour, educational attainment, and socio-economic status later in life. Epidemiological evidence indicates an association between childhood obesity and cognition and educational attainment. Knowledge of when obesity related deficits in cognition and attainment emerge, and how large the deficits are at various ages, may be useful to support arguments for school-based obesity prevention initiatives and in translating evidence on this topic into policy aimed at preventing obesity. In this study we explored whether the adverse association between obesity and cognition emerges in early childhood. Measures of cognitive abilities included visuo-spatial skills, expressive language skills and reasoning skills. Our findings indicated that obesity in the pre-school years may be weakly associated with some poorer cognitive outcomes at age 5 years in boys, independently of socioeconomic status. Stronger relationships between obesity and cognition or educational attainment may emerge later in childhood. Evidence from an English cohort study suggested an adverse association between obesity in teenage girls and lower academic attainment in Mathmatics, Science and English. (more…)
Allergies, Author Interviews, BMJ, Gastrointestinal Disease / 16.12.2015

MedicalResearch.com Interview with: Meri K Tulic PhD Université de Nice Sophia-Antipolis Immune Tolerance Nice, France The International Inflammation 'in-FLAME' Network Worldwide Universities Network  Medical Research: What is the background for this study? What are the main findings? Dr. Tulic: We know that damaged epithelial gut barrier is a hallmark of gut inflammatory diseases including inflammatory bowel disease (IBD) and irritable bowel syndrome (IBS). It has been long known that respiratory allergens such as house-dust mites (HDM) are the main causes of epithelial destruction in the lungs and initiation of allergic airway disease such as asthma. We set out to test whether  house-dust mites may also be present in the human gut and may contribute to intestinal barrier dysfunction. In this paper, we have shown that  house-dust mites is found in the gastrointestinal system of ~50% of all healthy subjects tested and it has detrimental effect on gut barrier function. The mechanisms include its direct destruction of tight-junction proteins which normally hold adjoining epithelial cells together, resulting in increased gut permeability. This process is driven by cysteine-proteases contained within the mite. In healthy individuals this effect is likely to be regulated by increased production of regulatory IL-10 (an anti-inflammatory mediator); our preliminary data indicate that a defect in regulatory responses may exist in IBS patients. (more…)
Author Interviews, Heart Disease, Hospital Readmissions / 15.12.2015

MedicalResearch.com Interview with: Javed Butler MD MPH Chief, Division of Cardiology Stony Brook University Health Sciences Center SUNY at Stony Brook, NY Medical Research: What is the background for this study? What are the main findings? Dr. Butler: There is a lot of emphasis on reducing the risk of readmission after heart failure hospitalization. The main focus is on early readmissions as the risk for readmission is highest earlier post discharge. In this study, we described the fact that certainly there is some increased risk post discharge, the majority of the risk is actually dependent on the patient and disease characteristics at the time of discharge as opposed to true reduction in risk over time, which is partially related to differential attrition of high risk patients earlier post discharge. (more…)
Author Interviews, Sexual Health / 15.12.2015

MedicalResearch.com Interview with: Lee Ellis PhD Department of Anthropology University of Malaya Kuala Lumpur Malaysia Medical Research: What is the background for this study? What are the main findings? Dr. Ellis: Sexual orientation appears to be highly influenced by prenatal neurohormonal factors (as opposed to social experiences throughout life).  However, the specifics continue to elude scientific comprehension.  Over the past two decades, researchers began to explore the possibility that a putative measure of prenatal testosterone exposure, called the 2D:4D finger length ratio, might be predictive of variations in sexual orientation.  The results have been mixed.  In the present study, colleagues and I obtained multiple measures of prenatal testosterone exposure (including a 2D:4D measure) from large samples of college students in two countries and factor analyzed these measures.  Analyses revealed two apparent prenatal testosterone exposure variables, one largely pertaining to bone growth (that included our 2D:4D measure), and the other mainly pertaining to muscular growth and coordination.  It was this second factor, not the first one, that appeared to be mainly responsible for variations in sexual orientation. (more…)
Antioxidants, Author Interviews, Exercise - Fitness, Nutrition / 14.12.2015

MedicalResearch.com Interview with: Néstor Vicente Salar, PhD. Profesor Asociado UMH/ UMH Part-time Assistant Professor Doctor en Biología Diplomado en Nutrición Humana y Dietética (CV00195) Miembro del GE-NuDAFD (AEDN)  Medical Research: What is the background for this study? What are the main findings? Response: Nowadays, the practising of endurance sport is increasing, running being the sport chosen by many people who decide to start doing exercise. Distances and time are important factors to take in account in amateur as well as in professional runners. Among others, these factors are directly related to the risk of oxidative damage. In fact, oxidative stress has two faces: beneficial and deleterious. Helpful effects include the defence against infectious agents or the function as intracellular signaling molecules in many processes. On the other hand, high and persistent levels of oxidative stress can produce harmful effects if the antioxidant defences are overwhelmed, resulting in structural damage. Antioxidants from diet, for example pomegranate juice, seem to control oxidative stress disorders. However, the studies about the role of pomegranate juice in oxidative stress modulation in athletes are scarce. We have demonstrated that the intake of this kind of juice during 22 days in endurance athletes is capable to modulate the structural damage in macromolecules as proteins and lipids. (more…)
Author Interviews, Brigham & Women's - Harvard, JCEM, Thyroid, Thyroid Disease / 14.12.2015

MedicalResearch.com Interview with: Dr. Erik K. Alexander, MD FACP Chief, Thyroid Section, Division of Endocrinology Brigham & Women's Hospital Associate Professor of Medicine, Harvard Medical School Medical Research: What is the background for this study? What are the main findings? Dr. Alexander: Thyroid nodular disease has become an increasingly common medical illness, with prevalence reported to range between 26-67% in the adult.  Though advancing age is known to influence the formation of thyroid nodules, their precise relationship remains unclear.  Furthermore, it is uncertain whether age influences the risk that any thyroid nodule may prove cancerous.  Thus we conducted a study to determine the impact of patient age on nodule formation, the number of thyroid nodules, and risk of thyroid malignancy. Medical Research:  What are the main findings? Dr. Alexander: Our study is a prospective cohort analysis of consecutive adults who presented for evaluation of nodular disease from 1995-2011 at Brigham and Women’s Hospital, Boston, MA.  6,391 patients underwent thyroid ultrasound and fine needle aspiration that resulted in 12,115 thyroid nodules ≥1 cm.  Patients were stratified into six age groups and compared using sonographic, cytologic, and histologic endpoints. We found that the prevalence of thyroid nodular disease increases with advancing age.  The mean number of nodules at presentation increased from 1.5 in the youngest cohort (ages 20–30) to 2.2 in the oldest cohort (>70 years).  In contrast, the risk for malignancy in a newly identified nodule declined with advancing age.  Thyroid cancer incidence per patient was 22.9% in the youngest cohort, but 12.6% in the oldest cohort.  Despite a lower likelihood of malignancy, identified cancers in older patients demonstrated a more aggressive cancer subtype.  While nearly all malignancies in younger patients were well-differentiated, older patients were more likely to have higher risk papillary thyroid cancer variants, poorly differentiated cancer, or anaplastic carcinoma. (more…)
Author Interviews, Cost of Health Care, Health Care Systems, Pediatrics / 14.12.2015

MedicalResearch.com Interview with: Dr. Eric W. Christensen, PhD Health Economist Children’s Hospitals and Clinics of Minnesota Minneapolis, MN Medical Research: What is the background for this study? Dr. Christensen: National healthcare expenditures are up from 5.0% of gross domestic product in 1960 to 17.4% in 2013. We must find ways to control cost while maintaining quality. Accountable care organizations (ACOs) were designed to control a population’s health care cost while maintaining or improving quality. This study was an examination of one ACO exclusively covering a pediatric Medicaid population. Medical Research: What are the main findings? Dr. Christensen: We found that health care utilization and cost patterns were associated with the length of time patients were attributed to this ACO, where attribution length can be thought of as a proxy for consistent primary care from ACO providers. Specifically, attribution length of 2 or more years was associated with a 40.6% decrease in inpatient days. This decrease was partially offset by increases in outpatient visits (as one would expect with a primary care focus), emergency department visits, and use of pharmaceuticals. Combined these utilization changes resulted in a cost reduction 15.7% for those attributed 2 or more years. These changes were achieved while meeting quality benchmarks. (more…)