Author Interviews, BMJ, Imperial College / 21.06.2015

Mr. Angus Turnbull Imperial College School of Medicine, London UKMedicalResearch.com Interview with: Mr. Angus Turnbull Imperial College School of Medicine, London UK Medical Research: What is the background for this study? What are the main findings? Mr. Turnbull: Autopsy has been used to advance medical knowledge and understanding of pathological processes for millennia but increasing evidence indicates its decline in the UK and elsewhere. This study not only confirms that but suggests autopsy for learning purposes has almost disappeared. In the United Kingdom autopsy is divided into medico-legal autopsy (that required by law under the jurisdiction of HM Coroner) and consented autopsy (performed with the consent of the bereaved or their family). Over the past half-century, small single site studies have noted a marked decline in consented autopsy rates, however there has been no study for over 20 years to determine the extent of the decline nationwide. This study examined all acute NHS Trusts within England, NHS Boards in Scotland and Wales and Social Care Trusts in Northern Ireland. We found that the average autopsy rate (the percentage of adult inpatient deaths which under go consented autopsy) in the United Kingdom in 2013 was only 0.7%. The study showed that in nearly a quarter (23%) of all NHS Trusts in the United Kingdom, consented autopsy is now extinct. These findings may have implications for training, for research and for learning from mortality – a key aspect of patient safety. (more…)
Author Interviews, Lifestyle & Health, NYU / 19.06.2015

MedicalResearch.com Interview with: Stella Yi, PhD, MPH New York University Langone School of Medicine, Department of Population Health New York, NY 10016 MedicalResearch: What is the background for this study? What are the main findings? Dr. Yi: Sedentary behaviors, such as sitting time, are an emerging risk factor in the field of physical activity epidemiology. Recent studies have demonstrated the negative health consequences associated with extended sitting time, including metabolic disturbances and decreased life expectancy independent of the effects of regular exercise. We also assessed mean values of self-reported sitting time to characterize these behaviors in a diverse, urban sample of adults. The average New York City resident sits more than seven hours a day—greatly exceeding the three hours or more per day that is associated with decreased life expectancy. Among the findings:
  • At the lower economic end, individuals spent 6.3 hours per day sitting, while those with higher incomes spent 8.2 hours per day sitting
  • College graduates spent 8.2 hours per day sitting, compared with 5.5 hours per day for those with less than a high school education
  • Whites spent on average 7.8 hours per day sitting, African Americans spent 7.4 hours sitting, Hispanics spent 5.4 hours sitting, and Asian Americans spent 7.9 hours per day sitting
  • Sitting time was highest in Manhattan, compared to other boroughs.
In the current analysis, we also assessed the validity of a two-question survey method of sitting time during waking hours using accelerometers to measure sedentary time in a subsample of our study participants. The correlation between sitting time reported in the survey and accelerometer-measured sedentary time was modest (r=0.32, p<0.01) with wide limits of agreement. We interpreted this to mean that while self-reported sitting might be useful at the population-level to provide rankings and subgroups, it may be limited in assessing an individual’s actual behavior. (more…)
Author Interviews, Lancet / 19.06.2015

MedicalResearch.com Interview with: Dr. Stephan Glund Ph.D. Boehringer Ingelheim Pharma GmbH & Co. KG Transl. Medicine & Clin. Pharmacology Medical Research: What is the background for this study? What are the main findings? Dr. Glund: There are currently no specific reversal agents available for any of the non-Vitamin K antagonist oral anticoagulants (NOACs). We are working on the development of idarucizumab, a specific reversal agent to dabigatran, the first approved NOAC. The study now published in The Lancet investigated, for the first time in healthy volunteers, the reversal of the anticoagulant effect of dabigatran by idarucizumab. Our study in healthy male volunteers showed that idarucizumab led to immediate, complete and sustained reversal of the anticoagulant effect of dabigatran. Participants first received dabigatran and then idarucizumab. The specific reversal agent was given two hours after the last dose of dabigatran, when dabigatran concentrations were at peak levels. After a five-minute infusion of idarucizumab, anticoagulation was immediately reversed back to baseline levels. The reversal effect was sustained for more than 24 hours for all doses of 2g and above. Idarucizumab was well tolerated by the study participants. In addition, our study also showed that administration of idarucizumab reversed dabigatran-induced inhibition of wound-site fibrin formation, which plays a key role in the blood clotting mechanism. This suggests that idarucizumab might also reverse impaired haemostasis due to dabigatran anticoagulation at a wound site. (more…)
Author Interviews, BMJ, Chocolate, Heart Disease / 19.06.2015

Professor Phyo Kyaw Myint MBBS MD FRCP(Edin) FRCP(Lond) Clinical Chair in Medicine of Old Age Epidemiology Group, Division of Applied Health Sciences University of Aberdeen ScotlandMedicalResearch.com Interview with: Professor Phyo Kyaw Myint MBBS MD FRCP(Edin) FRCP(Lond) Clinical Chair in Medicine of Old Age Epidemiology Group, Division of Applied Health Sciences University of Aberdeen Scotland Medical Research: What is the background for this study? What are the main findings? Response: The research was carried out by academics from the Universities of Aberdeen, Manchester, Cambridge and East Anglia, as well as the Lancashire Teaching Hospital, the Medical Research Council Epidemiology Unit, Cambridge and the Academic Medical Centre, Amsterdam. It has been published online in the journal Heart. The team base their findings on almost 21,000 adults taking part in the EPIC-Norfolk study, which is tracking the impact of diet on the long term health of 25,000 men and women in Norfolk, England, using food frequency and lifestyle questionnaires. The researchers also carried out a systematic review of the available international published evidence on the links between chocolate and cardiovascular disease, involving almost 158,000 people—including the EPIC study participants. The EPIC-Norfolk participants (9214 men and 11 737 women) were monitored for an average of almost 12 years, during which time 3013 (14%) people experienced either an episode of fatal or non-fatal coronary heart disease or stroke. Around one in five (20%) participants said they did not eat any chocolate, but among the others, daily consumption averaged 7 g, with some eating up to 100 g. Higher levels of consumption were associated with younger age and lower weight (BMI), waist: hip ratio, systolic blood pressure, inflammatory proteins, diabetes and more regular physical activity —all of which add up to a favourable cardiovascular disease risk profile. Eating more chocolate was also associated with higher energy intake and a diet containing more fat and carbs and less protein and alcohol. The calculations showed that compared with those who ate no chocolate higher intake was linked to an 11% lower risk of cardiovascular disease and a 25% lower risk of associated death. It was also associated with a 9% lower risk of hospital admission or death as a result of coronary heart disease, after taking account of dietary factors. And among the 16,000 people whose inflammatory protein (CRP) level had been measured, those eating the most chocolate seemed to have an 18% lower risk than those who ate the least. The highest chocolate intake was similarly associated with a 23% lower risk of stroke, even after taking account of other potential risk factors. Of nine relevant studies included in the systematic review, five studies each assessed coronary heart disease and stroke outcome, and they found a significantly lower risk of both conditions associated with regular chocolate consumption. And it was linked to a 25% lower risk of any episode of cardiovascular disease and a 45% lower risk of associated death. The study concluded that cumulative evidence suggests higher chocolate intake is associated with a lower risk of future cardiovascular events. (more…)
Aging, Author Interviews / 19.06.2015

MedicalResearch.com Interview with: Arlene Ash Ph.D., Professor David Hoaglin Ph.D., Professor and Aimee R. Kroll-Desrosiers, MS Department of Quantitative Health Sciences University of Massachusetts Medical School Worcester, MA Medical Research: What is the background for this study? What are the main findings? Response: The Long Life Family Study (LLFS) is an international collaborative investigation of the genetics and familial components of exceptional survival, longevity, and healthy aging. It has enrolled members of long-lived sibships, their offspring, and spouses of either group.  Medicare claims data is a unique, nationally representative source of data on all treated diseases for most Americans over the age of 65. Our main question was: Does membership in a long-lived family protect against disease? For each American LLFS participant who was at least age 65 in 2008 and alive in 2009, we selected four persons from the general Medicare population who matched the participant on age, sex, and ZIP code of residence. We then used 2008–2010 Beneficiary Annual Summary Files from the Centers for Medicare & Medicaid Services (CMS) to compare the prevalence of 17 conditions among 781 LLFS participants in Medicare with those of 3,227 non-LLFS matches.* Analyses accounted for nesting within LLFS families and adjusted for age, sex, race, and year. Among LLFS participants identified as members of a long-lived sibship, 7 of the 17 conditions were significantly less common than for similarly aged controls (Alzheimer’s, hip fracture, diabetes, depression, prostate cancer, heart failure and chronic kidney disease); in contrast, 4 (arthritis, cataract, osteoporosis and glaucoma) were significantly more common. Spouses, offspring and offspring spouses of these long-lived siblings share in significantly lower risk for Alzheimer’s, diabetes and heart failure. Several additional analyses found suggestive (although not statistically significant) evidence of lower disease prevalence in both genetically and maritally-related LLFS cohort members. (more…)
Author Interviews, General Medicine, JAMA, Outcomes & Safety / 19.06.2015

Samuel Pannick, MA, MBBS, MRCP Imperial Patient Safety Translational Research Center, National Institute for Health Research and Imperial College London, London, England West Middlesex University Hospital National Health Service Trust, Middlesex, EnglandMedicalResearch.com Interview with: Samuel Pannick, MA, MBBS, MRCP Imperial Patient Safety Translational Research Center, National Institute for Health Research and Imperial College London West Middlesex University Hospital National Health Service Trust Middlesex, England Medical Research: What is the background for this study? What are the main findings? Response: Improving the quality of general medical ward care is a recognized healthcare priority internationally. Ward teams have been encouraged to structure their work more formally, with regular interdisciplinary team meetings and closer daily collaboration with their colleagues. Some early studies suggested that these changes might benefit patients, and help ward teams work more efficiently. However, team interventions on medical wards have been reported with numerous different outcome measures, and prior to this study, it was unclear what their objective benefits were. We showed that there is little agreement on the objective outcomes that best reflect the quality of interdisciplinary team care on general medical wards. Changes to interdisciplinary care aren’t reflected in the outcome measures that researchers choose most often, like early readmission rates or length of stay. Complications of care - although harder to record - might have more promise as a measure of the quality of inpatient team care in these specific medical areas. (more…)
Author Interviews, Immunotherapy, Melanoma, Nature / 19.06.2015

MedicalResearch.com Interview with: Chiara Martinoli, PhD Medical Oncology of Melanoma European Institute of Oncology Milan, Italy MedicalResearch: What is the background for this study? What are the main findings? Dr. Martinoli: The recent advent of new immunomodulatory drugs and targeted therapies is changing the therapeutic algorithm for metastatic melanoma patients. Immunomodulation with the anti-CTLA-4 antibody ipilimumab improves survival but is not devoid of potential risks. There is an urgent need for biomarkers to identify patients best suited to receive this therapy, in order to maximize treatment benefit and spare toxicities. In this study, by analyzing pre-therapy hematological parameters of a large group of metastatic melanoma patients treated with ipilimumab, we showed that neutrophil-to-lymphocyte ratio is strongly and independently associated to patient outcome. Patients with a low baseline neutrophil-to-lymphocyte ratio had a double-reduced risk of disease progression and a two-to-four-fold reduced risk of death, regardless of age, sex and LDH. (more…)
AHA Journals, Author Interviews, Cleveland Clinic, Stroke / 19.06.2015

Dr. Ken Uchino, MD Cleveland Clinic Main Campus Cleveland, OH 44195MedicalResearch.com Interview with: Dr. Ken Uchino, MD Cleveland Clinic Main Campus Cleveland, OH 44195 Medical Research: What is the background for this study? What are the main findings? Dr. Uchino: Stroke center designation started in 2003 and more hospitals have been certified as primary stroke centers over time. We asked the question how many are certified now? What are the characteristics of the hospitals that are certified? In 2013, nearly a third (23%) of acute short-term adult general hospitals with emergency departments were certified as stroke centers. 74% of the stroke centers were certified by the Joint Commission, a non-profit organization that certifies health care facilities and programs. 20% were certified by state health departments. States varied in percentages of hospitals that were certified, ranging from 4% in Wyoming to 100% in Delaware. Not unexpectedly larger hospitals and hospitals in urban locations were more likely to be certified as stroke centers. But a hospital being located in a state with so-called “stroke legislation” more than tripled the chance of being a certified stroke centers, even accounting for other factors. These states passed legislation to promote stroke centers and mandated stroke patients to be preferentially transported to qualified hospitals. (more…)
Author Interviews, C. difficile, Columbia, Gastrointestinal Disease, Microbiome, Pediatrics / 19.06.2015

Daniel E. Freedberg, MD, MS Assistant Professor of Medicine Division of Digestive and Liver Diseases Columbia University, New YorkMedicalResearch.com Interview with: Daniel E. Freedberg, MD, MS Assistant Professor of Medicine Division of Digestive and Liver Diseases Columbia University, New York Medical Research: What is the background for this study? Dr. Freedberg: Acid suppression medications are increasingly prescribed to relatively healthy children without clear indications, but the side effects of these medications are uncertain. Medical Research: What are the main findings? Dr. Freedberg: Acid suppression with (proton pump inhibitors ) PPIs or (histamine-2 receptor antagonists) H2RAs was associated with increased risk for C. diff infection in both infants and older children. Medical Research: What should clinicians and patients take away from your report? Dr. Freedberg: Increased risk for C. diff should be factored into the decision to use acid suppression medications in children.  Our findings imply that acid suppression medications alter the bacterial composition of the lower gastrointestinal tract. (more…)
Author Interviews, Cannabis, Columbia, Lancet / 18.06.2015

Deborah S. Hasin, Ph.D. Professor of Epidemiology Columbia University New York, New York 10032MedicalResearch.com Interview with: Deborah S. Hasin, Ph.D. Professor of Epidemiology Columbia University New York, New York 10032 MedicalResearch: What is the background for this study? What are the main findings? Dr. Hasin: The background for the study was the need to identify the causes of the marked increase in marijuana use among U.S. adolescents over the last several years, given that early adolescent marijuana use leads to a number of adverse health and psychosocial consequences, including cognitive decline, into adulthood. We had two main findings from the study:
  1. A comparison of the rates of adolescent marijuana use between states that ever passed a medical marijuana law and those that did not revealed that states with such laws had higher rates of teen marijuana use, regardless of when they passed the law; and
  2. When we compared the rates of teen marijuana use in these states before and after passage of the laws, we did not find a post-passage increase in the rates of teen marijuana use. This suggests that some common factor may be causing both the laws to be passed and the teens to be more likely to smoke marijuana in the states that passed these laws.
(more…)
Author Interviews, Cancer Research, HPV, OBGYNE, Vaccine Studies / 18.06.2015

MedicalResearch.com Interview with: Ann Goding Sauer Epidemiologist, American Cancer Society, Inc. Atlanta, GA 30303 MedicalResearch: What is the background for this study? Response: Among US women, a positive association between Pap test uptake and HPV vaccination has been shown, though potential variation of the association by race/ethnicity had not been explored previously. The prevalence of some HPV types varies across different racial/ethnic groups so it is important to explore the association between Pap test uptake and HPV vaccination in detail. MedicalResearch: What are the main findings? Response: Pap test uptake was significantly lower among those who had not initiated HPV vaccination (81.0%) compared to women who had initiated vaccination (90.5%) (adjusted prevalence ratio = 0.93, 95% CI: 0.90–0.96). This result was seen across most of the sociodemographic factors examined, though not statistically significant for non-Hispanic blacks, Hispanics, those with lower levels of education, or those with higher levels of income. (more…)
Author Interviews, Kidney Disease, Social Issues / 18.06.2015

Holly Kramer, MD, MPH Department of Public Health Sciences Loyola University Chicago Health Sciences Campus Maywood, ILMedicalResearch.com Interview with: Holly Kramer, MD, MPH Department of Public Health Sciences Loyola University Chicago Health Sciences Campus Maywood, IL MedicalResearch: What is the background for this study? What are the main findings? Dr. Kramer: The U.S. dialysis dependent population continues to grow with  636,905 prevalent cases of end-stage renal disease (ESRD) in the U.S. as of December 31, 2012, , an increase of 3.7% since 2011.  Poverty is a well described risk factor for ESRD because poverty impacts access to care and nutritious foods.  The definitions for poverty in the U.S. have not changed over the past several decades despite marked changes in social structure.  For example, social integration in the U.S. society currently requires a cell phone, computer and internet access and access to transportation.  Healthy foods also cost more now relative to unhealthy foods compared to past decades.  Thus, the link between poverty and any chronic disease or health outcome is likely dynamic due to the evolving financial burden for living in a rapidly changing industrialized society.  Our study defined poverty as living in a zip code defined area with > 20% of the residents living below the federal poverty line.  We show that the prevalence of adults receiving dialysis who are living in poverty has increased over time.  We also show that the association between poverty and ESRD may be getting stronger over time.   (more…)
Annals Internal Medicine, Author Interviews, Duke, Weight Research / 18.06.2015

William S. Yancy, Jr., MD, MHSc Research Associate Center for Health Services Research in Primary Care Durham, NC 27705 Associate Professor Department of Medicine Duke University Medical CenterMedicalResearch.com Interview with: William S. Yancy, Jr., MD, MHSc Research Associate Center for Health Services Research in Primary Care Durham, NC  27705 Associate Professor Department of Medicine Duke University Medical Center Medical Research: What is the background for this study? What are the main findings? Dr. Yancy: A number of studies have compared different diet approaches for weight management with many of these finding that several different diets can result in significant weight loss. This has led many experts to advise that we should offer a choice among these diet options to our patients who are seeking to lose weight. We know that adherence is the best predictor of weight loss during dietary interventions, so the thought is that patients will adhere better to a diet that they prefer, resulting in more successful weight loss. In addition, allowing choice enhances patient autonomy, which is patient-centered and has been shown to increase treatment adherence. However, the previous studies of various diet approaches did not let people choose a diet, so we don’t actually know if letting them choose will lead to better weight loss. Our study specifically tested this assumption. We randomized participants to a condition where they were allowed to choose between 2 common weight loss diets or to a condition where they were randomly assigned to one of the diets. The 2 diets we used were a low-carbohydrate diet without calorie restriction and a low-fat diet combined with calorie restriction. Participants received counseling about the diets, and about behavioral strategies and physical activity, in 19 group sessions over the span of 12 months. They also received 6 phone calls with motivational counseling in the latter half of the program. (more…)
Author Interviews, Kidney Disease, Telemedicine / 18.06.2015

MedicalResearch.com Interview with: Judy K. Tan, MD Department of Nephrology Mount Sinai Hospital New York, New York MedicalResearch: What is the background for this study? What are the main findings? Dr. Tan: Chronic kidney disease (CKD) is a common life-threatening medical condition, affecting approximately 26 million adults in the U.S. In Veterans Integrated Service Network (VISN) 3, veterans with CKD who reside in the Hudson Valley Veterans Affair Medical Center (VAMC) catchment area travel to the James J. Peters VAMC, a tertiary care facility in the Bronx for their nephrology care. However, because of several barriers such as (1) distance between the two facilities (approximately 60 miles) and (2) patient complexity (medical and psychiatric illnesses), patients referred to the James J. Peters VAMC renal clinic from Hudson Valley VAMC often cancel or “no show”. This poor compliance increases the long-term risk of rapid progression of CKD and the development of complications associated with it.  To address this issue, the division of nephrology at the James J. Peters VAMC, in line with the veterans affairs’ focus on “patient-centered care,” developed a collaborative out-patient telenephrology service as a means to deliver care. The out-patient telenephrology service employs specialized global medical video conferencing equipment with customized medical instruments (ie stethoscopes) and Computerized Patient Record System (CPRS) accessibility to direct real-time evaluation and management of our veterans with CKD while they stay in their local VAMC. As demonstrated by Rohatgi et al, this intervention significantly increased the compliance rate of patients and reduced the travel time, miles, and cost of patients utilizing the telenephrology service.1 The hypothesis of our study is that patients with CKD remotely managed through our telenephrology service would exhibit comparable clinical outcomes and visit compliance as conventional in-person renal care. Our provisional analysis of the subjects followed in the telenephrology service showed 117 unique patients were evaluated between 2011-2014. The mean age was 71±11years old with 98.3% males. 70% of the patients were white and 26.5% African American. The predominant etiology of chronic kidney disease was diabetic nephropathy (31.6%) followed by hypertensive nephrosclerosis (26.5%). In the 87 patients who had 1-year follow up data, estimated glomerular filtration (eGFR) was well preserved over the year (33 mL/min vs. 32 mL/min; p=0.04). Systolic blood pressure (BP) was reduced from 138±20 to 133±16 mm Hg (p=0.03), but no difference was observed in diastolic BP. Urine protein-creatinine ratio fell from 0.58 to 0.25 (p=0.07). 94% of patients had parathyroid levels checked and 70.9% were on ACE inhibitors during the first year of follow up. (more…)
Author Interviews, Biomarkers, Cancer Research, Mayo Clinic, MD Anderson, Nature / 18.06.2015

Eric Jonasch, MD Associate Professor Department of Genitourinary Medical Oncology University of Texas MD Anderson Cancer Center Houston, TXMedicalResearch.com Interview with: Eric Jonasch, MD Associate Professor Department of Genitourinary Medical Oncology University of Texas MD Anderson Cancer Center Houston, TX and Dr. Thai H. Ho, MD Ph.D. Department of Oncology Mayo Clinic Scottsdale ArizonaDr. Thai H. Ho, MD Ph.D. Department of Oncology Mayo Clinic Scottsdale Arizona Medical Research: What is the background for this study? What are the main findings? Response: The blueprints of a cell are encoded in DNA strands (its genome) which are highly compressed in order to fit into a tiny cell. The reading (called the epigenome) of these DNA ‘blueprints’ determines whether that cell will develop into a kidney cell or another type of cell. However, in cancer, errors occur either in the blueprints themselves or the cell makes mistakes in reading the blueprints. Cancers of the kidney affect more than 61,000 patients annually and over 13,000 patients die annually, making it one of the top 10 leading causes of cancer deaths. Studies have revealed that mutations occur in genes that regulate how our DNA ‘blueprints’ are compacted in greater than >50% of kidney cancers, making these genes as a group the most frequently mutated. In our study, we identified that these errors that initially arise in an early kidney cancer lead to propagation of these same errors in metastases, a phenomenon in which the cancer has spread to another organ and is a major cause of death. Furthermore, we generated a detailed map of these epigenomic changes in patient-derived tumors. (more…)
Author Interviews, Education, Heart Disease, Lifestyle & Health, Radiology / 16.06.2015

MedicalResearch.com Interview with: Ms. Rikke Elmose Mols Department of Cardiology, Lillebaelt Hospital-Vejle, Vejle, Denmark. MedicalResearch.com: What is the background for this study? What are the main findings? Response: Current ESC guidelines for patients with chest pain and low to intermediate pre-test probability of coronary artery disease (CAD) recommend control and modification of risk factors. However, patients with an elevated cardiovascular risk profile are frequently inadequately motivated for lifestyle changes and medicine adherence from knowledge about risk factors and information about risk reduction alone. Coronary artery calcification (CAC) is a marker of coronary atherosclerosis. The degree of coronary artery calcification may be assessed by the Agatston score (AS) derived by non-enhanced cardiac computed tomography, whereas non-invasive CT imaging of the coronary arteries require contrast-enhancement (coronary computed tomography angiography [CTA]). The presence of CAC is associated with an elevated probability of obstructive coronary artery disease (CAD) and an unfavorable clinical outcome. In symptomatic patients, demonstration of non-obstructive CAD identified by coronary CTA is associated with risk modifying behavior and intensified prophylactic medical treatment in observational studies. Among asymptomatic individuals, those with the highest Agatston score levels seem to be motivated for the adoption of risk modifying behaviour and visualization of CAC may stimulate adherence to lipid-lowering therapy and aspirin and a healthier lifestyle. The aim of the present prospective, randomized controlled study was to test the effect of adding visualization of coronary artery calcification to the standard information about risk and lifestyle modification on cholesterol levels and other risk markers in patients with a new diagnosis of non-obstructive CAD. Visualization of coronary artery calcification and brief recommendations about risk modification (ESC guidelines) after coronary CTA in symptomatic patients with hyperlipidemia and non-obstructive CAD may have a favorable influence on plasma total-cholesterol concentration, adherence to statin therapy and risk behavior. Further investigations are needed. (more…)
Author Interviews, Critical Care - Intensive Care - ICUs, Dermatology / 16.06.2015

MedicalResearch.com Interview with: Rémi Coudroy MD CHU de Poitiers, Service de Réanimation Médicale CIC 1402 (ALIVE group), Université de Poitiers, Poitiers, France Medical Research: What is the background for this study? What are the main findings? Dr. Coudroy: Skin mottling is characterized by a red-violaceous discoloration of the skin. Its occurrence, as impaired consciousness and decreased urinary output are well-known clinical signs of shock. Skin mottling has been investigated only in patients with septic shock and recent studies have found that the extent and the persistence of skin mottling for more than 6 hours were associated with mortality. However, in daily clinical practice, we noticed that skin mottling occurred in patients without septic shock, and there was no data supporting the impact of skin mottling on the prognosis of critically ill patients. In a retrospective monocentric observational study over a 1-year period in a 15-bed tertiary medical ICU where skin mottling over the knees is assessed by nurses, we found that skin mottling occurred in 29% of patients admitted to ICU. Nurses’ evaluation of skin mottling was highly reliable. In 60% of cases, mean arterial pressure was ≥ 65 mmHg without vasopressors. The occurrence of skin mottling was associated with mortality independently from calculated severity scores at admission (i.e. Simplified Acute Physiology Score II). Similarly, the persistence of skin mottling for more than 6 hours was associated with mortality independently from organ failure at the onset of skin mottling (i.e. the use of vasopressors, the need for mechanical ventilation and hyperlactatemia). (more…)
Author Interviews, Cannabis, Pediatrics / 15.06.2015

Dr. Gary Smith MD, DrPH Center for Injury Research and Policy Nationwide Children's Hospital Columbus, OhioMedicalResearch.com Interview with: Dr. Gary Smith MD, DrPH Center for Injury Research and Policy Nationwide Children's Hospital Columbus, Ohio Medical Research: What is the background for this study? What are the main findings? Dr. Smith: As of January 2015, 23 states and Washington D.C. have legalized marijuana for medical use. Four of those same states and Washington D.C. have also voted to legalize marijuana for recreational use. The debate about legalization often focuses on health effects among adults, economic benefits, and crime rates. Lost in the discussion is the potential harm to young children from unintentional exposure to marijuana. The study found that the rate of marijuana exposure among children 5 years of age and younger rose 147.5 percent from 2006 through 2013 across the United States. The rate increased almost 610 percent during the same period in states that legalized marijuana for medical use before 2000. In states that legalized marijuana from 2000 through 2013, the rate increased almost 16 percent per year after legalization, with a particular jump in the year that marijuana was legalized. Even states that had not legalized marijuana by 2013 saw a rise of 63 percent in the rate of marijuana exposures among young children from 2000 through 2013. Most children were exposed when they swallowed marijuana – that may be related to the popularity of marijuana brownies, cookies and other foods. (more…)
Author Interviews, JAMA, McGill, Parkinson's / 15.06.2015

Ron Postuma, MD, MSc Associate Professor Department of Neurology Montreal General Hospital Montreal, QuebecMedicalResearch.com Interview with: Ron Postuma, MD, MSc Associate Professor Department of Neurology Montreal General Hospital Montreal, Quebec Medical Research: What is the background for this study? What are the main findings? Dr. Postuma: The background is that we often think about Parkinson’s Disease as a single disease.  However, every clinician knows that there is a great deal of variability from patient to patient.  If we can understand the main aspects that separate patients into groups, we can target therapy better. The analysis used a semi-automated means to divide Parkinson’s patients into groups, using extensive information about motor and non-motor aspects of disease.  We found that the non-motor symptoms, especially cognition, sleep disorders, and blood pressure changes were the most powerful predictors of which group a patient would be in.  Based on these non-motor (and some motor aspects), the most accurate way to divide patients was into three groups - diffuse (many non-motor symptoms), pure motor, and intermediate (halfway between the other).  We then followed patients over time.  The diffuse group had, by far, the worse prognosis.  This was not only for the non-motor aspects, but the motor as well. (more…)
Author Interviews, Biomarkers, Leukemia, NYU, Pediatrics / 15.06.2015

Susan Schwab, PhD Assistant professor at NYU Langone Skirball Institute of Biomolecular Medicine MedicalResearch.com Interview with: Susan Schwab, PhD Assistant professor at NYU Langone Skirball Institute of Biomolecular Medicine Medical Research: What is the background for this study? What are the main findings? Dr. Schwab:  T cell acute lymphoblastic leukemia (T-ALL) remains a devastating pediatric disease.  Roughly 20% of children do not respond to current therapies.  Furthermore, metastasis to the central nervous system is common in T-ALL, and intrathecal chemotherapy, even when successful at eradicating the cancer, causes serious long-term cognitive side-effects. Here we report that the chemokine receptor CXCR4 is essential for T cell acute lymphoblastic leukemia progression in both mouse and human xenograft models of disease.  Consistent with sustained disease remission in the absence of CXCR4, loss of CXCR4 signaling results in decreased levels of c-Myc, which is required for leukemia initiating cell activity.   T-ALL cells reside near cells generating the CXCR4 ligand CXCL12 in the bone marrow, and our data suggest that vascular endothelial cells may be an important part of the T-ALL niche. (more…)
Author Interviews, Cost of Health Care, Education, Johns Hopkins, Primary Care / 15.06.2015

MedicalResearch.com Interview with: Eric T. Roberts and Darrell Gaskin Johns Hopkins University Bloomberg School of Public Health Baltimore, MD Medical Research: What is the background for this study? What are the main findings? Response: This study looked at the implications of the Affordable Care Act’s expansion of Medicaid on the need for additional physicians working in primary care. Since 2014, 11 million low-income adults have signed up for Medicaid, and this figure will likely increase as more states participate in the expansion. Many new Medicaid enrollees lacked comprehensive health insurance before, and will be in need of primary and preventive care when their Medicaid coverage begins. In light of these questions, in this study, we projected the number of primary care providers that are needed to provide care for newly-enrolled adults. We forecast that, if all states expand Medicaid, newly-enrolled adults will make 6.1 million additional provider visits per year. This translates into a need for 2,100 additional full time-equivalent primary care providers. We conclude that this need for additional providers is manageable, particularly if Congress fully funds key primary care workforce training programs, such as the National Health Service Corps. (more…)
Author Interviews, Outcomes & Safety, Rheumatology / 15.06.2015

MedicalResearch.com Interview with: Cécile Gaujoux-Viala, MD, PhD Université Montpellier I Chef de Service de Rhumatologie CHU de Nîmes Carémeau France Medical Research: What is the background for this study? Response: Chronic inflammatory rheumatic diseases – such as rheumatoid arthritis (RA), ankylosing spondylitis (AS), and psoriatic arthritis (PsA)  – confer significant patient and economic burdens : 1/5 of people with rheumatic conditions has been forced to change career, 1/3 will have stopped working within two years of onset and 1/2 will be unable to work within ten years. The addition of biological agents in treatment strategies for rheumatic diseases have improved the possibility of controlling disease activity and slowing the progression of joint damage. But these treatments are very expensive and their effect on work participation remains unclear. (more…)
Author Interviews, Biomarkers, Kidney Disease, University of Pittsburgh / 14.06.2015

MedicalResearch.com Interview with: Raghavan Murugan MD, MS, FRCP, FCCP Associate Professor of Critical Care Medicine and Clinical and Translational Science Core Faculty, Center for Critical Care Nephrology, CRISMA Center, Raghavan Murugan MD, MS, FRCP, FCCP Associate Professor of Critical Care Medicine and Clinical and Translational Science Core Faculty, Center for Critical Care Nephrology, CRISMA Center, John Kellum, MD Professor and Vice Chair for Research Director, Bioengineering and Organ Support Program, CRISMA Center Director, Center for Assistance in Research using eRecord (CARe)John Kellum, MD Professor and Vice Chair for Research Director, Bioengineering and Organ Support Program, CRISMA Center Director, Center for Assistance in Research using eRecord (CARe) Department of Critical Care Medicine University of Pittsburgh Pittsburgh, PA Medical Research: What is the background for this study? What are the main findings? Response: In our prior studies, we found that nearly one-half of critically ill patients in the intensive care unit who receive dialysis die by 2 months after acute illness and more than one-third of surviving patients are dialysis dependent. We sought to examine whether simple patient characteristics and inflammatory biomarkers predicted death and non-recovery of kidney function after severe acute kidney injury. We found that a combination of four simple and readily available patient characteristics including older age, lower mean arterial pressure, need for mechanical ventilation, and higher serum bilirubin levels predicted death and dialysis dependence. Higher plasma concentration of interleukin (IL)-8 in combination with the clinical characteristics also increased risk prediction. To our knowledge, this study is the first large study to examine risk prediction for outcomes after severe acute kidney injury using a panel of biomarkers in a large cohort of critically ill patients receiving dialysis. (more…)
Author Interviews, Nutrition, PLoS, Race/Ethnic Diversity, Vanderbilt / 14.06.2015

MedicalResearch.com Interview with: Wei Zheng, MD, PhD, Professor of Medicine Anne Potter Wilson Chair in Medicine Director, Vanderbilt Epidemiology Center and Danxia Yu, PhD Research Fellow Vanderbilt Epidemiology Center Vanderbilt University School of Medicine Nashville, TN, 37203 Medical Research: What is the background for this study? What are the main findings? Response: The Dietary Guidelines for Americans (DGA) provide the most authoritative advice in the US about healthy eating. Higher adherence to the DGA, reflected by a higher Healthy Eating Index (HEI) score, has been found to be associated with lower risk of developing or dying from chronic diseases (e.g. diabetes, cardiovascular disease, and certain cancers) in several US studies. However, these studies recruited mostly non-Hispanic white individuals and middle to high income Americans. It has been reported that racial/ethnical background and socioeconomic status may influence food choices and diet quality. However, no previous study has adequately evaluated the association between adherence to the DGA and risk of death due to diseases in racial/ethnical minorities and low-income Americans. Therefore, it is uncertain whether the health benefits of adherence to the current DGA can be generalized to these underserved populations. We analyzed diet and mortality data from the Southern Community Cohort Study (SCCS), a large, prospective cohort study including approximately 85,000 American adults, 40-79 years old, enrolled from 12 southeastern states between 2002 and 2009. Two-thirds of the SCCS participants were African-American and more than half reported an annual household income <$15,000. During a mean follow-up of 6.2 years, we identified 6,906 deaths in the SCCS, including 2,244 from cardiovascular disease, 1,794 from cancer, and 2,550 from other diseases. Using multivariate analysis methods, we found that participants in the top 20% of the HEI score (highest adherence to the DGA) had only about 80% of the risk of death due to any diseases compared with those in the bottom 20% of the HEI score. This protective association was found regardless of sex, race and income levels. (more…)
Author Interviews, Beth Israel Deaconess, Blood Pressure - Hypertension, Technology / 14.06.2015

MedicalResearch.com Interview with: Neetika Garg, MD Fellow in Nephrology Beth Israel Deaconess Medical Center Division of Nephrology, Department of Medicine Boston, MA 02215 MedicalResearch: What is the background for this study? What are the main findings? Dr. Garg: One in every three Americans suffers from hypertension. Since high blood pressure (BP) frequently does not cause any symptoms, self-blood pressure monitoring at home and patient education are critical components of patient management. With more than 58% of the US adults owning a smartphone, mobile-based health technologies (most commonly in the form of applications or “apps”) can serve as useful adjuncts in diagnosis and management of hypertension. At the same time, several smartphone-based applications are advertised as having blood pressure measurement functionality, which have not been validated against a gold standard. In this cross-sectional study, we analyzed the top 107 hypertension related apps available on the most popular smartphone platforms (Google Android and Apple iPhone) to analyze the functional characteristics and consumer interaction metrics of various hypertension related apps. Nearly three-quarters of the apps record and track blood pressure, heart rate, salt intake, caloric intake and weight/body mass index. These app features can facilitate patient participation in hypertension management, medication adherence and patient-physician communication. However, it was concerning to find that 6.5% of the apps analyzed could transform the smartphone into a cuffless BP measuring device. None of these had any documentations of validation against a gold standard. Furthermore, number of downloads and favorable user ratings were significantly higher for these apps compared to apps without blood pressure measurement function. This highlights the need for greater oversight and regulation in medical device development. (more…)
Author Interviews, Brain Injury, Pediatrics, Sleep Disorders / 14.06.2015

MedicalResearch.com Interview with: Kimberly Allen PhD, RN Assistant Professor Center dr-kimberly-allenfor Narcolepsy, Sleep and Health Research Department Women Children and Family Health Science Chicago, IL 60612 Medical Research: What is the background for this study? Dr. Allen: Pediatric traumatic brain injuries (TBI) are a leading cause of morbidity and mortality worldwide.Each year in the United States over 1Ž2 million children are admitted to the hospital for traumatic brain injuries (TBIs). Depending on the severity of the injury and how the individual child responds to the primary injury, a range of medical care may be necessary from an overnight hospital admission for observation to admission in the intensive care unit (ICU) and inpatient rehabilitation facility to re-teach and help to recover skills children once knew. The short- and long-term consequences of traumatic brain injuries include: motor and sensory impairments; cognitive, emotional, psychosocial impairments; headaches, and sleep disruptions. Medical Research: What are the main findings? Dr. Allen: The main finding from this pilot study with two groups with 15 children in each group: one of children with traumatic brain injuries and one of typically, developing healthy children was that children with traumatic brain injuries have significantly more daytime sleepiness and worse sleep quality compared to the control group. Additionally, children with TBI also had lower overall  functional scores (e.g, school, social) compared to the controlled children. All of the surveys were completed by the child’s parent. (more…)
Author Interviews, Diabetes, Immunotherapy, Kidney Disease, University of Michigan / 13.06.2015

MedicalResearch.com Interview with: Frank C. Brosius, MD Professor, Internal Medicine and Physiology Chief, Division of Nephrology University of Michigan Ann Arbor, MI Dr. Matthias Kretzler MD Professor, Internal Medicine Research Professor, Computational Medicine and Biology University of Michigan Ann Arbor, MI Katherine R. Tuttle MD Clinical Professor of Medicine, Division of Nephrology Medical & Scientific Director, Providence Medical Research Center/Sacred Heart Center Professor of Basic Medical Sciences, WWAMI Program Washington State University Medical Research: What is the background for this study? Response: Our University of Michigan team had found that JAK-STAT gene expression was increased in kidneys in patients with diabetic kidney disease and that these changes correlated with progression of kidney disease.  We subsequently substantiated these changes in other studies and have found that by increasing expression of just one of these genes, JAK2, in a single kidney cell type (podocytes) in mice that we can make their diabetic kidney disease much worse. At around the same time, investigators at Eli Lilly and Co. had FDA approval to test a JAK1-2 inhibitor, baricitinib, in patients with rheumatoid arthritis.  The Lilly scientists saw our human results and thought about using baricitinib in patients with diabetic kidney disease.  After initial discussions with Dr. Kretzler and myself they concluded that there was good reason to move ahead with this study and just 14 months after the initial meeting the phase 2 clinical trial of baricitinib in the treatment of patients with diabetic kidney disease was initiated. (more…)
Author Interviews, Psychological Science, Sexual Health / 13.06.2015

MedicalResearch.com Interview with: Fiona Dyshniku, M.A. Ph.D. Candidate, Clinical Psychology - Adult Clinical track Department of Psychology University of Windsor MedicalResearch: What is the background for this study? Response: This study was conducted in the context of previous research that has found other evidence that pedophilia has biological roots that start before birth, such as shorter stature and left-handedness. Both of these correlates have prenatal origins, meaning that their development necessarily precedes the onset of more socially oriented correlates, such as parenting styles, sexual abuse during childhood, etc. Moreover, these neurodevelopmental correlates appear permanent and immune to later psychosocial influences. Much like handedness and stature, minor physical anomalies (MPA) develop prenatally, are permanent, and remain immune to psychosocial influences. There are additional benefits to examining minor physical anomalies, including the fact that they tend to develop in a set sequence, are actually formed from the same tissue that gives rise to the central nervous system, and have been widely studied in other well-established neurodevelopmental disorders, such as schizophrenia. MedicalResearch: What are the main findings? Response: We found that individuals simultaneously possessing more craniofacial anomalies and fewer peripheral anomalies scored higher on several well-established pedophilia indices, including phallometric testing, possession of child pornography, and number of child victims. We also found that craniofacial anomalies on their own were more prevalent among individuals classified as pedophiles through phallometric testing. Taken together, these results suggest that there is further evidence for a biological cause of pedophilia. Moreover, since craniofacial anomalies develop around week 5 of gestation, it would appear that biological differences occur quite early on during foetal developmental. (more…)
Author Interviews, Heart Disease, Infections, Surgical Research / 13.06.2015

MedicalResearch.com Interview with: Mariusz Kowalewski, MD Department of Cardiac Surgery, Dr Antoni Jurasz Memorial University Hospital Bydgoszcz, Systematic Investigation and Research on Interventions and Outcomes Medicine Research Network, Poland Medical Research: What is the background for this study? What are the main findings? Dr. Kowalewski: Sternal wound infections occurring after heart surgery performed via median sternotomy, and in particular, after coronary artery bypass grafting (CABG), although rare, still pose serious postoperative complications that increase the length of hospital stay and healthcare costs. One of many ways to prevent them from happening, except from optimal glucose control, tight-fixed closure of the sternum at the end of surgery and perioperative iv. antibiotics, is to insert a gentamicin collagen sponge between two sternal edges, just before wiring them together. High local concentrations of gentamicin were shown to eliminate any microbial growth in the area, in the same time, not affecting the kidneys, as would be the case with systemic administration. Gentamicin sponges are widely used in orthopadic, gastro-intestinal and vascular surgery and were shown to reduce postoperative infection rates. Although extensively tested in the field of heart surgery, findings of one recent multicenter study have questioned their true benefit. We aimed to perform a comprehensive meta-analysis of studies assessing the efficacy of implantable gentamicin-collagen sponges in sternal wound infection prevention. After screening multiple databases, a total of 14 studies (N = 22,135 patients, among them 4 randomized controlled trials [N = 4,672 pts]) were included in the analysis. Implantable gentamicin-collagen sponges significantly reduced the risk of sternal wound infection by approximately 40% when compared with control (risk ratio [RR], 0.61; 95% confidence interval [CI], 0.39-0.98; P = .04 for randomized controlled trials and RR, 0.61; 95% CI, 0.42-0.89; P = .01 for observational studies). A similar, significant benefit was demonstrated for deep sternal wound infection (RR, 0.60; 95% CI, 0.42-0.88; P = .008) and superficial sternal wound infection (RR, 0.60; 95% CI, 0.43-0.83; P = .002). The overall analysis revealed a reduced risk of mediastinitis (RR, 0.64; 95% CI, 0.45-0.91; P = .01). The risk of death was unchanged. In addition, we investigated, by means of meta-regression, the correlation between sternal wound infections and extent to which the bilateral internal thoracic artery (BITA) was harvested. We found that the benefit provided by the gentamicin sponge was attenuated when BITA was harvested; these results suggest that another potentially preventive measure must be taken in such patients, as with severely reduced blood supply to the sternum (as is the case with BITA), sponge itself might not be enough to prevent wound infection. (more…)
Author Interviews, Diabetes, Lancet, McGill / 13.06.2015

MedicalResearch.com Interview with: Dr Ahmad Haidar Ph.D. Division of Experimental Medicine Department of Medicine, McGill University Montreal, QC, CanadaDr. Ahmad Haidar Ph.D Division of Experimental Medicine, Department of Medicine McGill University, Montreal, QC, Canada Medical Research: What is the background for this study? What are the main findings? Dr. Haidar: This is the first head-to-head-to-head comparison in outpatient setting of dual-hormone artificial pancreas, single-hormone artificial pancreas, and conventional pump therapy in children and adolescents with type 1 diabetes. The main finding is that the dual-hormone artificial pancreas seems to outperform the other two systems in reducing nocturnal hypoglycemia in camp settings when the patients are very physically active during the day. Medical Research: What should clinicians and patients take away from your report? Dr. Haidar: Glucagon has the potential to reduce nocturnal hypoglycemia if added to the artificial pancreas. However, this needs to be confirmed in larger and longer studies as the single-hormone artificial pancreas might be sufficient in home settings (this study was conducted at a camp, which is an environment different that home). (more…)