Author Interviews, Cost of Health Care, JAMA / 25.07.2016

MedicalResearch.com Interview with: James C. Robinson PhD Leonard D. Schaeffer Professor of Health Economics Director, Berkeley Center for Health Technology Division Head, Health Policy and Management University of California School of Public Health Berkeley, CA MedicalResearch.com: What is the background for this study? Response: To moderate the increase in insurance premiums, employers are increasing consumer cost sharing requirements. Under reference pricing, the employer establishes a limit to what it will contribute towards each service or product, typically set at the 60th percentile or other midpoint in the distribution of prices in the market. If the patient selects a facility charging less than or equal to this contribution, he/she receives full coverage, but if a more expensive facility is chosen, the patient must pay the full difference. (more…)
Author Interviews, JAMA, Johns Hopkins, Race/Ethnic Diversity, Stroke / 25.07.2016

MedicalResearch.com Interview with: Romanus Roland Faigle, M.D., Ph.D. Assistant Professor of Neurology The Johns Hopkins Hospital MedicalResearch.com: What is the background for this study? Response: Stroke care entails a variety of procedures and interventions, which generally fall into one of the two following categories: 1) curative/preventative procedures (such as IV thrombolysis and carotid revascularization), which intent to prevent injury and restore function; and 2) life-sustaining procedures (such as gastrostomy, mechanical ventilation, tracheostomy, and hemicraniectomy), which intent to address complications from a stroke and to prevent death. The use of curative/preventative procedures is supported by excellent evidence and is guided by well-defined criteria, while those are largely lacking for life-sustaining procedures. Therefore, curative/preventative are desirable for eligible patients, while life-sustaining procedures indicate the need to address undesired complications and in itself have questionable utility. We wanted to determine whether race differences in the use of the individual stroke-related procedures exist, and whether presence and directionality of differences by race follow a pattern unique to each of the 2 procedure groups. (more…)
Author Interviews, Infections, JAMA / 25.07.2016

MedicalResearch.com Interview with: Dr. Ane Uranga MD Department of Pneumology, Galdakao-Usansolo Hospital Galdakao, Bizkaia, Spain MedicalResearch.com: What is the background for this study? What are the main findings? Response: Despite clear benefits of shorter antibiotic treatments, reducing the duration of treatment remains challenging in daily clinical practice. Actually, IDSA/ATS recommendations for Community Acquired Pneumonia (CAP) suggested a minimum of 5 days of treatment based on clinical stability criteria. However, in our study the median of duration of antibiotic treatment in the control group was as high as 10 days. The main finding is that receiving 5 days antibiotic treatment in hospitalized patients suffering from CAP is not inferior to arbitrary treatment schedules in terms of clinical success. (more…)
Author Interviews, Diabetes, Pharmacology / 25.07.2016

MedicalResearch.com Interview with: Stig Ejdrup Andersen MD, PhD Clinical Pharmacology Unit Zealand University Hospital Roskilde Denmark MedicalResearch.com: What is the background for this study? Response: For decades, we have used sulphonylurea derivates in the medical treatment of type 2 diabetes. Although several newer drugs have become available, adding an SU is still a recommended and acceptable strategy when metformin monotherapy fails. The SUs are among the cheapest glucose lowering drugs on the marked but the risk of hypoglycaemia make clinicians prefer a newer oral drug such as a DPP-IV inhibitor or a SGLT-2 inhibitor to ansulphonylurea because even mild hypoglycaemia may affect the patients’ quality of life negatively. Several meta-analyses have examined the effectiveness and safety of noninsulin antidiabetic drug, all of which have considered the SUs a homogenous drug class. Pharmacologically, however, the SU agents are quite different. In 2004, a randomized controlled trial by Shernthaner et al. indicated that in comparison with glimepiride, gliclazide MR is equally effective and is associated with fewer hypoglycaemic episodes. Still, head-to-head comparisons of the SU-agents as add-on to metformin are few. In the absence of robust designed comparative trials, we decided to compare the relative risk of hypoglycaemia among the newer SU-agents in a network meta-analysis. (more…)
Author Interviews, Biomarkers, Diabetes, Diabetologia, OBGYNE / 25.07.2016

MedicalResearch.com Interview with: Dr. Sandra Hummel and Dr. Daniela Much Institute of Diabetes Research Helmholtz Center Munich German Research Center for Environmental Health Munich MedicalResearch.com: What is the background for this study? What are the main findings? Response: Gestational diabetes mellitus is associated with a seven-fold increased risk of developing type 2 diabetes postpartum. In 2012, we published that type 2 diabetes risk was markedly reduced up to 15 years after delivery in women with gestational diabetes if they breastfed for more than 3 months. However the underlying biological mechanisms are still unclear to date. Aim of this biomarker study was to identify the mechanism underlying the protective effect of prolonged lactation. At our study site in Munich, we enrolled 197 women with previous gestational diabetes participating in a postpartum assessment of glucose tolerance at a median time of 3.6 years after delivery. By using a targeted metabolomics approach (including a broad spectrum of lipids and amino acids), we identified lactation-associated biochemical changes in maternal plasma samples. Most interestingly, these metabolite signatures have been described with decreased risk for type 2 diabetes previously. Our results indicate that lactation-associated alterations persisted up to 11 years post-lactation. (more…)
Author Interviews, Gastrointestinal Disease, Mental Health Research / 24.07.2016

MedicalResearch.com Interview with: Laureate Professor Nicholas J. Talley, MBBS (Hons.)(NSW), MD (NSW), PhD (Syd), MMedSci (Clin Epi)(Newc.), FRACP, FAFPHM, FAHMS, FRCP (Lond. & Edin.), FACP, FACG, AGAF, FAMS, FRCPI (Hon), GAICD Pro Vice-Chancellor, Global Research, University of Newcastle, Australia Professor of Medicine, Faculty of Health and Medicine, University of Newcastle, Australia President, Royal Australasian College of Physicians Chair, Committee of Presidents of Medical Colleges Hon. Treasurer, Australian Academy of Health and Medical Sciences Editor-in-Chief, Medical Journal of Australia Senior Staff Specialist, John Hunter Hospital, Newcastle, Australia Professor of Medicine and Professor of Epidemiology, Joint Supplemental Consultant Gastroenterology and Health Sciences Research, Mayo Clinic, Rochester, MN, USA MedicalResearch.com: What is the background for this study? What are the main findings? Response: Functional gastrointestinal diseases (FGIDs) like the irritable bowl syndrome (IBS) are very common, cause major distress including pain and psychological dysfunction, impact on quality of life and drive high health care costs. We speculated that there are two distinct types of functional gastrointestinal disease that others have not recognized. For example, IBS in a subgroup may first begin with gut symptoms (pain, diarrhea, constipation, bloating etc) in those free of psychological distress and only later does new onset anxiety or depression develop, implicating gut disease as the primary driver of the entire symptom complex (a gut-to-brain disease). On the other hand, we speculated there is another quite different subgroup where disease begins with anxiety or depression and only later do new onset gut symptoms develop, and this is likely primarily a central nervous system cause (probably through the stress system), or a brain-to-gut disease. This is exactly what we found, with gut disease occurring first followed by new onset psychological distress in about two thirds of people from the community over a one year follow-up. (more…)
Author Interviews, Endocrinology, Hematology, OBGYNE, Thyroid Disease / 24.07.2016

MedicalResearch.com Interview with: Kris Poppe, MD, PhD Co-Head Endocrine Unit CHU St-Pierre UMC Université libre de Bruxelles MedicalResearch.com: What is the background for this study?  Response: Pregnant women are often referred by gynecologists to my endocrine practice, for altered thyroid function. At that occasion, I often noticed that the women also had low iron/ferritin levels (ferritin is the iron reserve). Searching in literature did not reveal many publications on the association between iron (deficiency) and thyroid function during pregnancy and so that was the background/aim to perform this study. (more…)
AHA Journals, Author Interviews, Gender Differences, Stroke, Tobacco Research / 23.07.2016

MedicalResearch.com Interview with: Joni Valdemar Lindbohm, MD Department of Public Health University of Helsinki, Finland MedicalResearch.com: What is the background for this study? Response: Approximately 1-6% percent of people carry an unruptured intracranial aneurysm but most of these never rupture during lifetime and cause subarachnoid hemorrhage (SAH). In SAH, the rupture of an aneurysm causes bleeding into the lining between the brain’s surface and underlying tissue. Despite advances in operative techniques, SAH can lead to death in up to 45% of the cases. Because life style risk factors are critical in development of subarachnoid hemorrhage, it is important to characterize the risk factor profile of those with an elevated risk. Widely accepted risk factors for SAH are increasing age, smoking, hypertension and female sex. However, the reasons for an elevated risk in women have remained uncovered and the effect of smoking habits are not well understood. (more…)
Author Interviews, Depression, Lancet / 23.07.2016

MedicalResearch.com Interview with: Professor David A. Richards, PhD Professor of Mental Health Services Research and NIHR Senior Investigator University of Exeter Medical School University of Exeter St Luke's Campus Exeter United Kingdom MedicalResearch.com: What is the background for this study? Response: Depression is a common mental health disorder affecting around 350 million people worldwide. Untreated depression is expected to cost the global economy US$5.36 trillion between 2011 and 2030. Many patients request psychological therapy, but the best-evidenced therapy—cognitive behavioural therapy (CBT)—is complex and costly. A simpler therapy—behavioural activation (BA)—might be as effective and cheaper than is CBT. We aimed to establish the clinical efficacy and cost-effectiveness of BA compared with CBT for adults with depression. (more…)
Author Interviews, HIV / 22.07.2016

MedicalResearch.com Interview with: Zhe Yuan MS. MS. PhD Candidate Nebraska Center for Virology University of Nebraska-Lincoln MedicalResearch.com: What is the background for this study? Response: AIDS causes millions of infections and deaths each year. Human immunodeficiency virus (HIV) is the cause of this detrimental disease of humans. Just like Ebola and Zika, AIDS is also a zoonotic disease at the beginning. For the origins of HIV, people believed that HIV originated from simian immunodeficiency virus from wild chimpanzees (SIVcpz). But until now, there has been no direct in vivo evidence for this assumption. Further, people cannot explain why only certain SIVcpz strains are thought to be the ancestors of already discovered HIV strains in humans. There is also a need to clarify what transmission risks might exist for those SIVcpz strains that have not already been found to infect humans. The answers to these questions are essential for a better understanding of cross-species transmission and predicting the likelihood of additional cross-species transmission events of SIV into humans. (more…)
ASCO, Author Interviews, Outcomes & Safety / 22.07.2016

MedicalResearch.com Interview with: Claire O’Hanlon, MPP Pardee RAND Graduate School and Courtney Gidengil, MD, MPH RAND Corporation MedicalResearch.com: What is the background for this study? Response: Providing high-quality health care is central to our nation’s commitment to veterans, but the quality of care provided in Veterans Affairs health care system (VA) is a longstanding area of concern. Part of the 2014 Veterans Access, Choice and Accountability Act (VACAA) mandated an independent assessment of VA’s health care capabilities and resources of the Veterans Health Administration, including a comprehensive evaluation of health care quality. As part of this evaluation we conducted this systematic review of journal articles that compare quality of care at the VA to other settings as an update to a 2009 review on this subject. (more…)
Author Interviews, Dermatology, JAMA / 22.07.2016

MedicalResearch.com Interview with: G. Thomas (Tom) Ray Division of Research, Kaiser Permanente 2000 Broadway Oakland, CA 94612-2304 MedicalResearch.com: What is the background for this study? Response: Basal cell carcinoma (BCC) is the most common cancer in the United States. BCCs tend to develop on sun-exposed areas such as the head and neck and are typically treated with various surgical techniques in an outpatient setting. Although BCCs are rarely fatal, they have been estimated to be among the most costly cancers in the Medicare population due to their high incidence. Yet because these cancers are not tracked by national registries the way, for example, melanoma is, basal cell carcinomas have been difficult to study. Incidence rates in the past have tended to rely on surveys such as those by the National Cancer Institute. And studies using disease codes have, until recently, been difficult because the codes used for basal cell carcinoma and squamous cell carcinoma were the same. Since 1997, Kaiser Permanente Northern California (KPNC) has had computerized pathology results that allowed us to develop an internal registry of BCC cancers. In addition to having detailed information about basal cell cancer patients, we also had detailed information on the underlying population - KPNC members – which allowed us to determine incidence rates of BCC by age, sex, and most importantly for this study, by geographic location. This is because we know the residential location of all KPNC members at any given time – both those that get basal cell cancer and those who do not. This combination of a validated BCC registry with a well-defined population at-risk gave us the unique ability to investigate the spatial distribution of BCC in Northern California and assess whether there existed geographic clustering of basal cell cancers. Although the investigation of spatial clustering of other cancers is fairly common, no such analyses have been performed for basal cell cancer in the United States. (more…)
Author Interviews, Dermatology / 22.07.2016

MedicalResearch.com Interview with: Charareh Pourzand, MSc, MPhil, PhD/DSc Senior lecturer and Associate Professor in Biopharmaceutics Department of Pharmcay and Pharmacology University of Bath Bath United Kingdom MedicalResearch.com: What is the background for this study? What are the main findings? Response: Exposure of skin cells to Ultraviolet A (UVA) component of sunlight provokes oxidative damage to the vital subcellular organelles, mitochondria, leading to ATP depletion and necrotic cell death. The presence of high level of potentially harmful ‘labile’ iron in mitochondria is thought to make these organelles highly susceptible to oxidative damage caused by UVA. Therefore, we designed a highly specific iron trapping compound that could directly target mitochondria and protect the organelles against UVA-induced iron damage and the ensuing cell death. The results of the study demonstrate an unprecedented level of protection afforded by these compounds against damage caused by high doses of solar UVA radiation, equivalent to up to 140 min sun exposure at sea level. (more…)
Author Interviews, BMJ, Radiology, Thyroid / 22.07.2016

MedicalResearch.com Interview with: Megan Haymart, M.D. Assistant Professor Institute for HealthCare Policy and Innovation University of Michigan MedicalResearch.com: What is the background for this study? What are the main findings? Response: Over the past three decades the incidence of thyroid cancer has risen. The majority of this rise in incidence is secondary to an increase in low-risk disease. In the setting of this rise in low-risk thyroid cancer, our team noted that over time there was a dramatic rise in imaging after initial treatment for thyroid cancer. We subsequently wanted to understand the implications of this increase in imaging. Does more imaging equal improved outcomes? In this study published in BMJ, we found that this marked rise in imaging after primary treatment of differentiated thyroid cancer was associated with increased treatment for recurrence but with the exception of radioiodine scans in presumed iodine-avid disease, no clear improvement in disease specific survival. (more…)
Author Interviews, Environmental Risks, Hearing Loss, JAMA, Occupational Health / 22.07.2016

MedicalResearch.com Interview with: Harrison W. Lin, M.D. Assistant Professor Department of Otolaryngology-Head & Neck Surgery UC Irvine Medical Center Orange, CA 92868 MedicalResearch.com: What is the background for this study? What are the main findings? Response: We reviewed the data from the Integrated Health Interview Series, which is a project funded by the National Institutes of Health to supplement the National Health Interview Survey (NHIS), a household-based, personal interview survey administered by the US Census Bureau and Centers for Disease Control and Prevention since 1957. The NHIS serves as the largest source of health information in the civilian population of the United States. Analyzing the available data on tinnitus symptoms from this survey, we found that approximately 1 in 10 Americans have chronic tinnitus. Moreover, durations of occupational and leisure time noise exposures correlated with rates of tinnitus – people who reported higher rates of loud noise exposures at work and recreationally more frequently reported chronic tinnitus. Finally, health care providers provided advice and treatment plans to patients with chronic tinnitus that were infrequently in line with the clinical practice guidelines published by the American Academy of Otolaryngology-Head & Neck Surgery Foundation. (more…)
Author Interviews, Beth Israel Deaconess, Biomarkers, Cost of Health Care, Medical Imaging, Ovarian Cancer / 22.07.2016

MedicalResearch.com Interview with: Katharine Mckinley Esselen, M.D. Instructor in Obstetrics, Gynecology and Reproductive Biology Beth Israel Deaconess Medical Center Brigham and Womens Hospital MedicalResearch.com: What is the background for this study? Response: There is no consensus on how to follow a patient in remission from ovarian cancer in order to detect recurrent disease. However, a 2009 randomized clinical trial demonstrated that using CA-125 blood tests for routine surveillance in ovarian cancer increases the use of chemotherapy and decreases patient’s quality of life without improving survival compared with clinical observation. Published guidelines categorize CA-125 tests as optional and discourage the use of radiographic imaging for routine surveillance. Thus, this study aims to examine the use of CA-125 tests and CT scans at 6 Cancer Centers and to estimate the economic impact of this surveillance testing for ovarian cancer. (more…)
AHA Journals, Author Interviews, Exercise - Fitness, Heart Disease / 22.07.2016

MedicalResearch.com Interview with: Jari Laukkanen MD, PhD Cardiologist Institute of Public Health and Clinical Nutrition University of Eastern Finland Kuopio Finland MedicalResearch.com: What is the background for this study? What are the main findings? Response: In this population-based study we found a strong inverse association between long-term change in directly measured cardio-respiratory fitness (CRF), using maximal oxygen uptake (VO2peak) and all-cause mortality. A small decrease in CRF over 11-years was associated with a lower risk of all-cause death in a graded fashion. The observed association was independent of risk factors. This population-based study with repeated and direct assessment of CRF using a very similar time-interval for all participants, whereas some previous studies showing the value of CRF were constructed on participants referred to exercise testing at varying time-intervals between two repeated tests using only indirect cardio-respiratory fitness assessment or other exercise scores. Cardiorespiratory fitness was assessed at baseline and follow-up using respiratory gas analyzer which is a golden standard for assessing aerobic fitness level. A single assessment of CRF predicts outcomes, however, no previous studies using directly measured VO2max have shown the association between long term changes in VO2max (i.e. 10 years) and its association with mortality. In the recent study VO2max defined from respirator gases with similar time-interval between two separate assessments of VO2max (=directly measured). This is a very novel finding in the field of exercise sciences, as well as in cardiovascular prevention and rehabilitation. Although cardio-respiratory fitness is recognized as an important marker of functional ability and cardiovascular health, it is currently the major risk factor that is not routinely and regularly assessed in either the general or specialized clinical setting, although it is suggested that an individual’s CRF level has been even a stronger or similar predictor of mortality than the traditional risk factors, including smoking, hypertension, high cholesterol, and type 2 diabetes mellitus. (more…)
Author Interviews, Biomarkers, Cancer Research / 22.07.2016

MedicalResearch.com Interview with: Dr. Hunter R. Underhill MD, PhD Department of Pediatrics, Division of Medical Genetics, Department of Radiology, University of Utah, Salt Lake City, Utah Department of Radiology and Department of Neurological Surgery University of Washington Seattle, Washington MedicalResearch.com: What is the background for this study? What are the main findings? Response: When cells undergo cell death (i.e., apoptosis) the DNA has the potential to enter the circulation. This DNA is not contained within a cellular membrane and is known as "cell-free DNA." This is a naturally occurring process. The same process also occurs when malignant tumors grow and evolve. The deposition of cell-free DNA derived from tumors is known as "circulating tumor DNA." Analysis of circulating tumor DNA holds the promise of detecting, diagnosing, and monitoring response to therapy of cancers through a simple blood draw - the "liquid biopsy." The challenge has been isolation of circulating tumor DNA from the background of the naturally occurring cell-free DNA. This has been particularly difficult in non-metastatic solid tumors as circulating tumor DNA has been heretofore indistinguishable from normal cell-free DNA except for the occurrence of mutant alleles that commonly occur at a frequency below detection limits - the proverbial needle in a haystack. Our study found a distinct size difference in DNA fragment length between circulating tumor DNA and cell-free DNA. Specifically, circulating tumor DNA is about 20-50 base pairs shorter than cell-free DNA originating from healthy cells. We were subsequently able to exploit this difference in size to enrich for circulating tumor DNA - essentially removing a large portion of the haystack that does not contain the needle to simplify the search. (more…)
Author Interviews, Neurological Disorders, PLoS / 21.07.2016

MedicalResearch.com Interview with: Zoltan Toroczkai, PhD, Professor of Physics Concurrent Professor of Computer Science and Engineering Physics Department University of Notre Dame, Notre Dame, IN, 46556 MedicalResearch.com: What is the background for this study? Response: The mammalian brain is arguably the most complex information processing network and with billions of neurons and trillions of connections it presents formidable challenges to deciphering its fundamental mechanisms for information processing. In the brain, information is encoded into the spatio-temporal firing patterns of groups of neurons (population coding), making the connectivity structure of the network crucial for brain function. Damages to this network have been associated with diseases such as Alzheimer’s, autism and schizophrenia, and thus understanding the cortical network would also help better understand certain diseases of the brain. An experimentally and computationally more feasible approach is to study the anatomical (physical connectivity) network between the functional areas of the cortex, a mosaic of brain patches, each associated with a specific function (e.g., visual, auditory, somatosensory). Based on phylogenic considerations one expects the existence of common fundamental network architectural (and implicitly, processing) principles to be present in all mammalian brains. However, the mammalian brain spans over five orders of variation in size and thus it is not clear at all what are this common architectural features and how would we find them. The challenge here is to compare networks of the same nature (information processing type) but of different orders, with different nodal identities, and of very different spatial embedding (geometrical size) properties. (more…)
Author Interviews, Cost of Health Care, Health Care Systems / 21.07.2016

Medicalresearch.com Interview with: Alex Mainor, JD, MPH Research Project Coordinator The Dartmouth Institute for Health Policy and Clinical Practice Lebanon, NH 03756 Carrie H. Colla, Alexander J. Mainor, Courtney Hargreaves, Thomas Sequist, Nancy Morden MedicalResearch.com: What is the background for this study? What are the main findings? Response: Waste in the healthcare system is an important concern to healthcare providers, patients, policymakers, and taxpayers, and is estimated to account for 30% of all healthcare costs. Low-value care can expose patients to unnecessary costs for little or no medical benefit, or to potential harm from unnecessary tests and procedures. In recent years, the concept of low-value care has gained wider acknowledgement and acceptance as a pressing concern for the healthcare system, and many interventions have been studied to reduce the use of this wasteful care. However, the landscape of these interventions has not been studied in a systematic and comprehensive way. In this review, we found that interventions to reduce the use of wasteful medical care are often studied and published selectively. Findings suggest that interventions using clinical decision support, clinician education, patient education, and interventions combining elements from each have strong potential to reduce low-value care. (more…)
Author Interviews, Mental Health Research, Pharmacology, Schizophrenia / 21.07.2016

MedicalResearch.com Interview with: Glorimar Ortiz, MS Senior Researcher/Statistician NRI-National Association of State Mental Health Program Directors Research Institute Falls Church, VA 22042 MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Despite the lack of empirical evidence that antipsychotic polypharmacy produces greater outcomes to antipsychotic monotherapy, and that several clinical guidelines recommend against it, patients with a diagnosis of schizophrenia continue to being discharged on polypharmacy. Over the past few years, attempts have been made to lower the rate of antipsychotic polypharmacy throughout the country. Most of the existing literature on this topic are based on Medicaid claims data which exclude data for patients discharged from state psychiatric inpatient hospitals. Our study is very important because it is the first time that data on the use of antipsychotic medications are analyzed using a large sample of discharges from state psychiatric inpatient hospitals. These hospitals now have the opportunity to benchmark their antipsychotic medication use rate with national rates more accurately, and therefore, develop and implement performance improvement activities that are more precise. The study found that 12% of all discharges were prescribed two or more antipsychotic medications. Of those patients discharged on at least one antipsychotic medication, 18% were prescribed two or more antipsychotics. The study also found that patients with a schizophrenia diagnosis and an inpatient hospital stay of 3 months or longer are more likely of being discharged on polypharmacy, and that the main reason for this was to reduce patient’s symptoms. Antipsychotic polypharmacy affects nearly 10,000 patients with schizophrenia annually in state psychiatric inpatient hospitals. (more…)
Author Interviews, Endocrinology, Genetic Research, NEJM, Weight Research / 21.07.2016

MedicalResearch.com Interview with: Dr. Peter Kühnen MD Institute for Experimental Pediatric Endocrinology Charité–Universitätsmedizin Berlin Berlin, Germany MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Kühnen: The patients, which were included in this study, are suffering from a genetic defect in a gene called POMC. This gene is cleaved into different hormones as e.g. MSH (melanocyte stimulating hormone). MSH is very important for the regulation of satiety by activation of the MC-4 receptor. For this reason these patients are persistent hyperphagic due to the lack of MSH and they gain weight very fast in the first months of their life. Setmelanotide activates the MC-4 receptor, which is important for the activation of satiety. By restoring the lost function Setmelanotide leads to a reduction of hyperphagia and to a reduction of body weight in this POMC deficient patients. (more…)
Author Interviews, Orthopedics, Science, Technology / 21.07.2016

MedicalResearch.com Interview with: Emilia Morosan PhD,  Professor Rice University Physics and Astronomy Houston TX 77005 MedicalResearch.com: What is the background for this study? What are the main findings?  Dr. Morosan: My group works mainly on searching for compounds with magnetic properties. The first step in the characterization of such compounds is powder X-ray diffraction, which requires grinding the samples to fine powder. When we discovered such a compound based on (titanium) Ti and (gold) Au, we were unable to grind it because of its apparent hardness. This prompted the hardness measurement on the magnetic compound (with equal amounts of Ti and Au) and also on other mixtures of the two metals. The main result of this study was that the particular compound beta-Ti3Au was the hardest among all Ti-Au mixture in our study and compared to previous hardness measurements on these binary alloys. Most remarkable was the four-fold increase in hardens in beta-Ti3Au over Ti, or most other biocompatible engineering alloys. Furthermore, beta-Ti3Au also has higher wear resistance, meaning its durability extends beyond that of other alloys. (more…)
Author Interviews, BMJ, Nutrition, Pediatrics / 21.07.2016

MedicalResearch.com Interview with: Sharon Carstairs PhD Student Public Health Research University of Aberdeen, Aberdeen MedicalResearch.com: What is the background for this study? Response: The introduction of solid foods is a key period when the milk diet is no longer able to meet all dietary needs, additionally it is a key time for food learning and development of eating preferences in a child’s life. It is vital that children are provided with nutritionally balanced foods as well as a variety of foods to meet dietary requirements and are exposed to different tastes and textures. Some parents provide home-cooked meals however, there is a large market of commercially available infant/toddler meals which can provide parents with a convenient alternative to home-cooking. (more…)
Author Interviews, Diabetes, Heart Disease, JAMA / 21.07.2016

MedicalResearch.com Interview with: Dr Fiona Bragg Clinical Research Fellow Clinical Trial Service Unit and Epidemiological Studies Unit Nuffield Department of Population Health University of Oxford MedicalResearch.com: What is the background for this study? Response: Diabetes is known to be a risk factor for cardiovascular disease. It is less clear, however, whether higher blood glucose levels in individuals without diabetes are also associated with higher risk for cardiovascular diseases. It is important to examine this association because it may help us to understand the mechanisms underlying these diseases as well as appropriate approaches to preventing them. We therefore looked at this association in the China Kadoorie Biobank study of 0.5 million Chinese adults, examining the relationship between blood glucose levels and the subsequent risk for cardiovascular diseases among participants with no history of diabetes at the time of recruitment to the study. (more…)
Author Interviews, JAMA, Surgical Research / 21.07.2016

MedicalResearch.com Interview with: Dr. David A. Hyman, MD Division of Otolaryngology–Head and Neck Surgery Department of Surgery University of Wisconsin School of Medicine and Public Health Madison MedicalResearch.com: What is the background for this study? What are the main findings? Response: Motor vehicle collisions represent a significant source of facial fractures seen at US trauma centers. In the last few decades there have been significant advances in airbag technology as well as a national legislative push regarding seat belt use which has led to increased safety device use. With these trends, we sought to assess the incidence of facial fractures in patients who present to US trauma centers as well as to analyze what effect restraint devices have on the likelihood of facial fractures after motor vehicle collisions. This analysis was performed using National Trauma Data Bank data from 2007-2012. We found the incidence of at least one facial fracture after a motor vehicle collision was 10.9% with nasal fracture being the most common facial fracture. Based on our analysis of more than 56 thousand patients with a facial fracture, we found that use of an airbag alone reduced the likelihood of a facial fracture by 18% while use of a seat belt alone reduced likelihood by 43%. Use of both reduced the likelihood of facial fractures in a crash by 53%. Younger age, male sex, and use of alcohol increased the likelihood of facial fracture. (more…)
Alcohol, Author Interviews, Columbia, OBGYNE, Tobacco / 21.07.2016

MedicalResearch.com Interview with: Dr. Qiana L. Brown, PhD, MPH, LCSW Postdoctoral Research Fellow Columbia University Mailman School of Public Health Department of Epidemiology Substance Abuse Epidemiology Training Program MedicalResearch.com: What is the background for this study? Dr. Brown: Prenatal substance use is a major public health concern, and poses significant threats to maternal and child health. Tobacco and alcohol are the most commonly used substances among pregnant women and non-pregnant women of reproductive age, and are leading causes of preventable adverse health outcomes for both mother and baby. Women with health insurance have more prenatal visits, and present for prenatal care earlier than uninsured women, which may increase their exposure to health messaging around substance abuse prevention at prenatal visits. Additionally, treatment for substance use disorders and maternal and child health care are part of the Essential Health Benefits covered by the Affordable Care Act, which may encourage patients and providers to engage in discussions around alcohol and tobacco use prevention during pregnancy. Given these factors, we examined the relationship between health insurance coverage and both past month tobacco use and past month alcohol use among a nationally representative sample of reproductive age women in the United States. We sampled 97,788 women ages 12 to 44 years old who participated in the U.S. National Survey of Drug Use and Health in 2010 to 2014. Among these women, 3.28% (n=3,267) were pregnant. We specifically investigated whether the relationship between health insurance and alcohol or tobacco use differed between pregnant and non-pregnant women. (more…)
Author Interviews, Immunotherapy, Pulmonary Disease / 20.07.2016

MedicalResearch.com Interview with: Ganesh Raghu, M.D. FACP, FCCP Professor of Medicine Division of Pulmonary and Critical Care Medicine and Director of Center for Interstitial Lung Diseases Director, Interstitial Lung Disease/Sarcoid/Pulmonary Fibrosis Program University of Washington Medical Center Seattle, Washington MedicalResearch.com: What is the background for this study? Response: This is a new post-hoc analysis of the Phase III INPULSIS trials, including a total of 1,061 patients with idiopathic pulmonary fibrosis (IPF), which has been published in the American Journal of Respiratory and Critical Care Medicine. As background, achieving an accurate diagnosis of IPF in clinical practice is very complex and challenging. Physicians use an imaging technique called high resolution computed tomography (HRCT) to help them identify the presence of scarring (fibrosis) and, specifically, the presence of usual interstitial pneumonia (UIP) pattern in the lungs. The radiological changes called "honeycombing" are the key feature of the UIP pattern visible on HRCT and the pattern of UIP is the hallmark of the fibrosis in patients with IPF. In the absence of definitive UIP pattern on HRCT images of the lungs, the diagnosis of  idiopathic pulmonary fibrosis requires the microscopic features of UIP in the surgical lung biopsy (SLB) based on current guidelines for diagnosis of IPF. However, it can be challenging to confirm that scarring in the absence of honeycombing on HRCT meets the strict guideline criteria for a definitive diagnosis of IPF. For a large group of patients who do not receive a confirmed diagnosis of IPF according to guidelines, including those not eligible for surgical lung biopsy, the clinical course of their condition and the effectiveness of  idiopathic pulmonary fibrosis treatment remains unknown. Therefore, investigations into the behavior of the disease across diagnostic subgroups are important. (more…)
Author Interviews, Infections / 20.07.2016

MedicalResearch.com Interview with: Prof. Andrea Endimiani, MD, PhD Institute for Infectious Diseases University of Bern MedicalResearch.com: What is the background for this study? Response: The spread of multidrug-resistant Gram-negative bacteria represents a serious issue for the healthcare system worldwide because our antibiotic armamentarium is becoming too limited. These «superbugs» may cause serious infections with high morbidity and mortality rates – there are already 700,000 estimated deaths per year worldwide because common antimicrobial therapies have become ineffective. In this scenario, colistin has represented the last active antibiotic option able to cure many infected people. Unfortunately, in November 2015 a new mechanism of resistance against colistin was found with a high prevalence in Escherichia coli and Klebsiella pneumoniae strains detected in China among humans, food animals, and chicken meat; more recently, it has also been found in other countries. This mechanism is encoded by a gene (named mcr-1) that is plasmid-mediated, thus assuring its great ability to mobilize and spread between different enterobacteria, including those normally present in the human and animal intestinal tracts. (more…)
Author Interviews, Infections, NEJM, Vaccine Studies / 20.07.2016

MedicalResearch.com Interview with: Nicole E. Basta, PhD MPhil Assistant Professor Division of Epidemiology and Community Health School of Public Health University of Minnesota MedicalResearch.com: What is the background for this study? Response: Meningococcal disease is a serious and often life-threatening condition. In the past several years, multiple outbreaks caused by meningococcal serogroup B (MenB) have occurred on college campuses in the US. Recently, a new meningococcal B vaccine known as 4CMenB or Bexsero was developed. The FDA granted special approval to use the vaccine to control an outbreak at a University in New Jersey prior to its licensure. We took advantage of this unique opportunity to investigate the impact of Bexsero during the outbreak. In doing so, we conducted the first clinical study of Bexsero among teens and young adults in the US. (more…)