Author Interviews, Biomarkers, Heart Disease, Women's Heart Health / 01.06.2016

MedicalResearch.com Interview with: Norman C. Wang, M.D., M.S., Assistant professor University of Pittsburgh School of Medicine Samar R. El Khoudary, Ph.D., M.P.H., Assistant professor of Epidemiology University of Pittsburgh Graduate School of Public Health MedicalResearch.com: What is the background for this study? What are the main findings? Response: We studied 252 middle-aged women with no known cardiovascular disease from the Study of Women’s Health Across the Nation [SWAN] Heart Study to determine if 5 blood biomarkers associated with abnormal inflammation/hemostasis were associated with increasing amounts of calcium detected in coronary arteries on computed tomography scans, or coronary artery calcium progression. Only higher blood levels of plasminogen activator inhibitor-1 was associated with coronary artery calcium progression. (more…)
Abuse and Neglect, Author Interviews, Heart Disease, HIV, JAMA / 31.05.2016

MedicalResearch.com Interview with: Steven Grinspoon, MD Professor of Medicine, Harvard Medical School MGH Endowed Chair in Neuroendocrinology and Metabolism Director, MGH Program in Nutritional Metabolism and Nutrition Obesity Research Center at Harvard MGH Boston, MA 02114 MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Grinspoon: Numerous epidemiologic studies have shown that people living with HIV face a 1.5 to 2-fold increased risk of heart attack, or myocardial infarction, as compared to individuals without the virus. Mechanisms underlying the increased risk of myocardial infarction in HIV are incompletely understood. It is possible that among people living with HIV, increased systemic immune activation fuels arterial inflammation. Arterial inflammation may, in turn, promote the development of high-risk morphology coronary atherosclerotic plaque, which is liable to rupture and result in myocardial infarction. For people diagnosed with HIV, the overall health benefits of immediate antiretroviral therapy (ART) are clear. However, the effects of newly-initiated antiretroviral therapy on arterial inflammation have not previously been studied. In this study, we set out to assess among a cohort of treatment-naive HIV-infected subjects, the effects of newly-initiated ART with a contemporary regimen on both immune function and arterial inflammation. We found that among treatment-naive HIV-infected individuals without clinical cardiovascular disease, newly initiated combined antiretroviral therapy has discordant effects to restore immune function without reducing the degree of arterial inflammation. (more…)
Author Interviews, Brain Injury, Pediatrics / 31.05.2016

MedicalResearch.com Interview with: Kristy Arbogast, PhD Co-Scientific Director Center for Injury Research and Prevention The Children's Hospital of Philadelphia Research Professor Division of Emergency Medicine Department of Pediatrics University of Pennsylvania Philadelphia, PA 19104 MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Arbogast: The research team looked retrospectively at four recent years of data on children diagnosed with concussion at Children's Hospital of Philadelphia (CHOP) to determine how children access the health system for a concussion. For those 8,000 kids with a CHOP primary care provider, 82% entered the health system via a primary care location, 12% entered through the ER and 5% through a specialist. One-third of concussion diagnoses were to children under age 12. Many current counts of concussion injury among children are based on emergency room visits or organized high school and college athletics data. Thus, we are vastly underestimating child and youth concussions in the US. (more…)
Author Interviews, JAMA, Outcomes & Safety / 31.05.2016

MedicalResearch.com Interview with: Cynthia J. Brown, MD, MSPH, AGSF Parrish Professor of Medicine and Director, Division of Gerontology, Geriatrics, and Palliative Care Comprehensive Center for Healthy Aging University of Alabama at Birmingham Birmingham, Alabama 35294 MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Brown: Low mobility is common during hospitalization and associated with loss of activities of daily living ability and community mobility. The objective of this study was to examine the impact of an in-hospital mobility program on post-hospital function and community mobility. Brown and colleagues, using a single blind randomized trial design, found that a mobility program that included offering assistance with ambulation linked with a behavioral intervention that focused on goal setting and addressing mobility barriers prevented loss of community mobility one month after hospital discharge. Those who received usual care experienced a clinically significant decline in community mobility. Functional status as measured by activities of daily living was not significantly different between the usual care and mobility program groups either before or after the hospitalization. Because low mobility in the hospital is associated with adverse outcomes including functional decline and nursing home placement even after controlling for illness severity and comorbid illness, these findings have potentially significant clinical implications. (more…)
Author Interviews, MRI, Schizophrenia / 30.05.2016

MedicalResearch.com Interview with: Lena Palaniyappan Medical Director Prevention & Early Intervention Program for Psychoses (PEPP) London, Ontario MedicalResearch.com: What is the background for this study? What are the main findings? Response: It is now well established that patients with schizophrenia show reduced thickness of brain's grey matter in Magnetic Resonance Imaging studies, indicating either a developmental or an acquired deficit in the amount of brain tissue. Such reductions are seen both in treated and untreated patients, suggesting that current treatments do not reverse the process of tissue loss, if at all this is occurring in patients. We wanted to study if subtle increase in brain tissue also accompanied this reduction. We observed that across the group of 98 medicated patients, reduced thickness was consistently accompanied by subtle, but nevertheless noticeable increases in thickness. Such increases were more pronounced in those with a longer duration of illness. (more…)
Author Interviews, Epilepsy, Neurological Disorders, PLoS / 30.05.2016

MedicalResearch.com Interview with: Amanda Sierra, PhD Research Professor and Group Leader Ramón y Cajal Fellow Achucarro Basque Center for Neuroscience Laida Bidea Bizkaia Science and Technology ParkAmanda Sierra, PhD Research Professor and Group Leader Ramón y Cajal Fellow Achucarro Basque Center for Neuroscience Laida Bidea Bizkaia Science and Technology Park Zamudio, Bizkaia, Spain MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Sierra: Microglia phagocytosis of apoptotic cells is at the core of the brain regenerative response to recover the homeostasis of the brain parenchyma after damage because it prevents the spillover of toxic intracellular contents and is actively anti-inflammatory. However, while neuronal death is widespread in neurodegenerative diseases (Alzheimer´s, Parkinson´s, multiple sclerosis) and well as in ischemic and traumatic brain injuries, we have a complete lack of knowledge of the efficiency of microglial phagocytosis in the diseased brain. In this paper we have discovered that microglia have a generalized response to apoptotic challenges: when confronted to a rise in the number of newborn cells, microglia display a combination of different strategies to boost their phagocytic output: increase the phagocytic capacity of each cell, recruit more cells to become phagocytic, or increase the total number of microglia (Abiega et al., PLoS Biol 2015). Thus, microglia have a very large potential for phagocytosis that could be summoned when needed. To our surprise, however, in pathological conditions such as epilepsy (mouse and human), microglial phagocytosis was blocked. We have made use of the adult neurogenic cascade, where newborn cells undergo apoptosis naturally and are engulfed by “unchallenged microglia” (Sierra et al. Cell Stem Cell 2010), to establish the baseline of microglial phagocytosis efficiency. Whereas in physiological conditions microglia phagocytose over 90% of the apoptotic cells and remove them in under 1.5h, soon after the seizures it only engulfed 10% of the apoptotic cells and took up to 6h to digest them. This is the first quantification of microglial phagocytosis efficiency in the diseased mouse and human brain.. The block in phagocytosis was a rather complex phenomenon related to an impaired recognition (reduction of phagocytosis receptors) as well as impaired motility and targeting (reduced basal motility). We have also shown that the impairment is mediated at least partially by altered ATP microgradients: ATP is not only a neuro- and gliotransmitter widely released during seizures but is also a well-known “find-me” signal released by apoptotic cells. Thus, during seizures microglia became “blinded” by the neuronal hyperactivity and could not find the apoptotic cells. In addition, we have shown that impairing phagocytosis releases the break on the inflammatory response. In fact, the impaired microglia were in a pro-inflammatory state and produced more cytokines such as tumor necrosis factor alfa (TNFa) or interleukin-1beta (IL-1b), which are well known neurotoxic and epileptogenic factors. (more…)
Author Interviews, Disability Research, Genetic Research, NEJM / 29.05.2016

MedicalResearch.com Interview with: Dr. Clara van Karnebeek PhD Certified Pediatrician and Biochemical Geneticist at the BC Children’s Hospital Principal Investigator, University of British Columbia MedicalResearch.com: What is the background for this study? Dr. van Karnebeek: The goal of the study was to diagnose patients with genetic conditions and discover and describe new diseases with potential for treatment. The study included patients with neurodevelopmental conditions that doctors suspected were genetic or metabolic in origin but had not been diagnosed using conventional methods. Our team tested the children and their parents using a combination of metabolomic (large scale chemical) analysis and a type of genomic sequencing called whole exome sequencing. With this state-of-the-art technique, experts analyze and interpret the portion of DNA called genes that hold the codes for proteins. Some people’s intellectual disability is due to rare genetic conditions that interfere with the processes the body uses to break down food. Because of these metabolic dysfunctions, there is an energy deficit and build-up of toxic substances in the brain and body leading to symptoms such as developmental and cognitive delays, epilepsy, and organ dysfunction. Some of these rare diseases respond to treatments targeting the metabolic dysfunction at the cellular level and range from simple interventions like dietary modifications, vitamin supplements and medications to more invasive procedures like bone marrow transplants. Because the right treatment can improve cognitive functioning or slow or stop irreversible brain damage, early intervention can improve lifelong outcomes for affected children and their families. (more…)
Author Interviews, Gastrointestinal Disease, Infections, Microbiome / 28.05.2016

MedicalResearch.com Interview with: Jennifer Mahony, PhD and  Prof Douwe Van Sinderen Dept of Microbiology University College Cork Cork, Ireland MedicalResearch.com Editor's note: Dr Jennifer Mahony & Prof Douwe van Sinderen, of the APC (Alimentary Pharmbiotic Center) Microbiome Institute, University College Cork, Ireland, have received a Grand Challenges Explorations Grant from the Bill & Melinda Gates Foundation to study the microbiota (bacteria and viruses) of infants in developing countries. This study seeks to improve the gut health of infants which could potentially prevent/reduce the estimated 0.8 million infants who die annually in developing countries. Dr. Mahony & Prof. van Sinderen answered several questions about the upcoming study for the MedicalResearch.com audience. MedicalResearch.com: What is the background for this study? Would you briefly explain what is meant by a microbiome? Response: The World Health Organisation promotes exclusive breast-feeding in infants until they are at least 6 months old. Early weaning in developing countries where sanitary conditions may be poor may lead to the introduction of microorganisms such as Shigella, which can cause intestinal infections and in extreme cases may be fatal. 0.8 million infant deaths in developing countries could be avoided annually according to UNICEF if exclusive breast-feeding is continued to the sixth month of life. Our intestinal tracts naturally contain many bacteria, called our microbiota, and the composition of this microbiota may have implications for our health and well-being. Just in the same way that drinking a probiotic drink every day is reported to promote a healthy gut microbiota, we will investigate how bacterial viruses (that specifically infect bacteria and not humans!) can change the gut bacterial population. (more…)
Author Interviews, Dermatology, Genetic Research / 28.05.2016

MedicalResearch.com Interview with: Ryuta Muromoto, Ph.D. Department of Immunology, Faculty of Pharmaceutical Sciences, Hokkaido University Sapporo, Japan MedicalResearch.com: What is the background for this study? Dr. Muromoto: Psoriasis is an immune-mediated chronic inflammatory skin disorder that affects some 125 million people worldwide. It is characterized by itchy, scaly skin plaques. It has been known that a cytokine IL-17A, which is produced by immune cells, plays a central role in the development and maintenance of clinical features of psoriasis. IL-17A acts on keratinocytes and up-regulates anti-microbial peptides and a set of chemokines, that are important for immune cell infiltration. This immune cell feedback amplifies psoriatic inflammation. Also, other inflammatory cytokines such as TNF-alpha and interferon-gamma are up-regulated, and have been implicated in pathogenesis of psoriasis. So, the interplay between cytokines appears to be important for development of psoriasis through keratinocyte activation. In this study, we sought to clarify the actual role of IL-17A and its interplay with other cytokines in keratinocyte activation. (more…)
Author Interviews, Chemotherapy, Mental Health Research / 27.05.2016

MedicalResearch.com Interview with: Michael A. Johnson Ph.D Associate Professor Department of Chemistry University of Kansas MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Johnson: We undertook these studies because chemotherapy induced cognitive dysfunction, also known as ‘chemobrain’, has become a major health issue in recent years. For example, up to a third of patients who have undergone chemotherapy treatment for breast cancer have reported symptoms of chemobrain. These symptoms may include loss of verbal and visual memory as well as decreased mental flexibility and difficulty focusing. For this study, we wanted to understand how treatment with chemotherapeutic agents affects the ability of neurons to communicate. An impairment of neurotransmitter release would imply that communication is hindered. This inability to communicate normally could contribute to cognitive dysfunction. We initially measured the release of dopamine in a region of the brain called the striatum. Our measurement of dopamine in this region was motivated by two key issues: its importance in cognitive function and our ability to measure it with high temporal resolution. From a cognitive standpoint, dopamine is important because the striatum helps translate signals, received from the cortex, into plans by forwarding wanted signals to other parts of the brain and suppressing unwanted signals. Fortunately, we can easily measure dopamine release using an electrochemical technique called fast-scan cyclic voltammetry. This method allows us to not only measure how much dopamine is released from a living brain slice, but also it affords us the capability to measure how quickly dopamine is taken back up. We also measured serotonin release using this method. Our main finding was that the ability of neurons to release dopamine was impaired after carboplatin treatment. We also found that serotonin release was similarly impaired. These release impairments corresponded to a decrease in cognitive ability of the treated rats. (more…)
Author Interviews, Mental Health Research, Pediatrics, Social Issues / 27.05.2016

MedicalResearch.com Interview with: Dr. Jianghong Li, Senior Scientist (PhD) From the President’s Project Group, WZB Berlin Social Science Center (Wissenschaftszentrum Berlin für Sozialforschung GmbH: www.wzb.eu) Reichpietschufer 50, 10785 Berlin, Germany MedicalResearch.com: What is the background for this study? Dr. Jianghong Li: Commuting to work is a common phenomenon in developed countries. In the US full-time wage workers residing in urban counties on average commuted about 55 minutes to work. In the UK, workers commuted 42 minutes (round trip) for work in 2008. German workers commute 13 kilometers and 44 minutes both ways to work on average. The average daily commuting time for work in other European countries ranges from 29 minutes in Portugal to 51 minutes in Hungary. To make your commute a little easier, why not try the Moovit app with its handy tracking tools such as the metro map. Men commute longer than women to work and working fathers commute further to work than working mothers. Men who are employed full-time and with children commute longer than their counterparts without children, regardless of the age of the youngest child. Previous research has shown that long commuting to workplace is associated with reduced civic participation and social interactions, lower life satisfaction, elevated stress hormone and reduced task performance, and increased risk for marriage breakdown. Daily experiences of unreliable transport, conflicting time schedules, congested roads and crowded trains contribute to commuters’ physical and psychological stress. These health and psychosocial consequences of commuting raise a concern about its plausible negative impact on children’s well-being. Yet, there was no inquiry about the effect of commuting on children’s well-being, except one small-scale study in the US of mothers leaving welfare for employment. (more…)
Author Interviews, Depression, Duke, Genetic Research, Mental Health Research, Pediatrics / 27.05.2016

MedicalResearch.com Interview with: Dr. Johnna Swartz, PhD Postdoctoral researcher in the lab of Ahmad Hariri Duke postdoctoral researcher in the lab of Ahmad Hariri MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Swartz: Prior research has shown that low socioeconomic status is a risk factor for the development of depression. In this study, we examined whether this risk factor was associated with changes in an epigenetic tag near the gene coding for the serotonin transporter, which has previously been linked to depression. We found that adolescents growing up in families with lower socioeconomic status accumulated more of these tags over time, which may lead to decreased gene expression. Moreover, we found that more of these tags were associated with increased activity in the amygdala, a brain region that plays an important role in the stress response. Finally, we found that adolescents with increased activity in the amygdala were more likely to develop depression symptoms a year later, particularly if they had a close relative with a history of depression. This is some of the first research to draw a link from an environmental risk factor to changes in depression symptoms through changes in epigenetic markers and brain function. (more…)
Author Interviews, Diabetes, Endocrinology, Environmental Risks, Lipids / 27.05.2016

MedicalResearch.com Interview with: Maayan Yitshak Sade MPH Chief Scientific Officer Clinical Research Center, Soroka University Medical Center, Israel and   Victor Novack, MD, PhD Soroka University Medical Center and Ben-Gurion University in Beer Sheva, Israel   MedicalResearch.com: What is the background for this study? Response: Numerous studies found association between exposure the air pollution and increased risk of cardiovascular and respiratory diseases. In recent years links were found between air pollution and diabetes as well. The scientific evidence supports a causal association between air pollution and oxidative stress, possibly involving impaired metabolism of glucose and lipids. In a recent study performed by our group, we observed a significantly increased risk for ischemic stroke among young adults, associated with air pollution exposure. Following these findings, and as a part of the possible theory linking the association air pollution exposure and cardiovascular diseases, we sought to investigate if this association might be mediated through the well-established cardiovascular risk factors such as abnormal lipid and glucose metabolism. (more…)
Author Interviews, Exercise - Fitness / 27.05.2016

MedicalResearch.com Interview with: Gregory Garrett, BS. MA. Doctoral Research Assistant School of Public Health Texas A&M Health Science Center MedicalResearch.com: What is the background for this study? What are the main findings? Response: Sedentary behavior in office environments is greatly contributing to obesity, increased body discomfort, and possible reductions in employee productivity. Sit-stand desks have been implemented to aid in reducing sedentary behavior, however employers are concerned that benefits may not offset the initial cost of implementation. In this study, employees with stand-capable workstations were compared to traditional seated employees on an objective measurement of productivity in a call center. The employees were monitored for 6 months and those with the stand-capable workstations were ~46% more productive per hour than their seated counterparts. Additionally, 75% of those with the stand-capable desks reported a significant decrease in body discomfort. (more…)
Author Interviews, Heart Disease, Race/Ethnic Diversity, Women's Heart Health / 27.05.2016

MedicalResearch.com Interview with: Norman C. Wang, M.D., M.S., Assistant professor University of Pittsburgh School of Medicine Samar R. El Khoudary, Ph.D., M.P.H., Assistant professor of Epidemiology University of Pittsburgh Graduate School of Public Health MedicalResearch.com: What is the background for this study? What are the main findings? Response: We examined medical records, blood samples and heart CT scans for 372 black and white women from Pittsburgh and Chicago enrolled in the Study of Women’s Health Across the Nation (SWAN). The women averaged just over 51 years old, were not on hormone replacement therapy and had no known heart disease when enrolled. We then looked at blood levels of five biomarkers linked to inflammation. All of the biomarkers were associated with coronary artery calcification, a predictor of heart disease that is measured with a heart CT scan. Taking into account the participants’ body mass index (BMI), a measure of overall body fat, we found that obesity was a key factor linking most of the elevated inflammation biomarkers and coronary artery calcification. Regardless of BMI, black women with higher levels of one particular biomarker, C-reactive protein, were more likely to have coronary artery calcification than whites. In fact, black women with coronary artery calcification had an average level of C-reactive protein in their blood that was almost double that of their white counterparts. (more…)
Author Interviews, Depression, JAMA, Mental Health Research / 27.05.2016

MedicalResearch.com Interview with: Robert J. Ursano, M.D. Professor and Chair Department of Psychiatry/ Director Center for the Study of Traumatic Stress Uniformed Services University of the Health Sciences MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Ursano: This study is part of STARRS-LS (Study to address risk and resilience in service members-longitudinal study). STARRS is a group of studies that address suicide risk in the US Army. Suicidal behavior includes suicide ideation, plans, attempts and completions. Understanding the transitions between these is an important goal. One component of STARRS is the examination of data available on all soldiers who were in the Army 2004-2009. This study examines suicide attempts in soldiers serving 2004-2009 in order to understand the association with deployment and the timing of suicide attempts as well as their association with mental health problems. STARRS is directed to identifying the who, when and where of service member risk. Then interventions can better be developed for these soldiers. (more…)
Author Interviews, Heart Disease, Pain Research, Psychological Science / 26.05.2016

MedicalResearch.com Interview with: Robert W. Levenson, Ph.D. Professor, Department of Psychology Director, Institute of Personality and Social Research (IPSR) University of California Berkeley, CA MedicalResearch.com: What is the background for this study? Dr. Levenson: This study comes from a 20-year longitudinal study of Bay Area married couples that we began in the late 1980s. The main purpose of the study was to understand the emotional qualities of successful marriages. Couples came to our laboratory every five years so that we could get a snapshot of the way they interacted with each. We also measured their psychological and physical health. This new paper connects the emotional behaviors we observed when couples discussed a problem in their marriage at the start of the study with the kinds of illnesses they developed over the ensuing decades. (more…)
Author Interviews, Colon Cancer, Gastrointestinal Disease, Race/Ethnic Diversity / 26.05.2016

MedicalResearch.com Interview with: Robert Wong, M.D., M.S. Attending Physician, Gastroenterology & Hepatology Director, GI Education & Research Highland Hospital I A member of Alameda Health System Oakland, CA MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Wong:  Colorectal cancer is a leading cause of morbidity and mortality in the United States. Early diagnosis through implementation of effective screening and surveillance programs leads to earlier staged tumor at time of diagnosis, which increases the treatment opportunities and improves overall survival. However, disparities in access to effective screening and surveillance can impair timely diagnosis and lead to advanced disease, limited treatment options and poor outcomes. The current study evaluated race/ethnicity-specific disparities in colorectal cancer epidemiology at a large urban safety net hospital and observed African American patients had significantly more advanced cancer stage at the time of diagnosis. Our study observed that African Americans were over 5 times more likely to have advanced stage 3-4 colon cancer at time of diagnosis compared with non-Hispanic white patients with colon cancer. While these findings are likely multifactorial, it sheds important light on race/ethnicity-specific disparities in colorectal cancer epidemiology and helps target future education and research to improve outcomes. (more…)
Author Interviews, Breast Cancer, Genetic Research, Ovarian Cancer / 26.05.2016

MedicalResearch.com Interview with: Sibaji Sarkar Ph.D Instructor of medicine Boston University School of Medicine Boston MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Sarkar: Although breast and ovarian cancers have different clinical presentations, there are certain molecular events that are conserved between the two types of cancers. For example, mutation in a few genes, such as BRCA1, BRCA2, is an indicator of possible development of both breast and ovarian cancers. ARHI, a pro-apoptotic imprinted gene is epigenetically silenced in both breast and ovarian cancers. A similar pattern was observed in microRNA as well. There are also several genes which are differentially expressed in these two types of cancers but few of these striking resemblances led us to investigate whether they have a common origin. In this paper, we compared genetic and epigenetic events in both breast and ovarian cancers and we hypothesize that they may have similar origin (mechanism of formation of cancer progenitor cells), which should be regulated by epigenetic mechanism. (more…)
Author Interviews, JAMA, Mental Health Research / 26.05.2016

MedicalResearch.com Interview with: Charles W. Hoge, M.D. Senior Scientist Walter Reed Army Institute of Research MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Hoge: Psychiatric definitions are revised periodically based on emerging science, with the intention of enhancing diagnostic accuracy, clinical utility, and communication. The latest edition of the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders was published in 2013 (DSM-5). However, there were an unusually large number of changes to the PTSD definition compared with other common conditions affecting adults, raising concerns with how well these changes truly reflected emerging evidence. Since DSM-5 was published, evidence has accumulated that indicates that the revision did not improve the definition, and more importantly excludes nearly a third of individuals who would have met the previous DSM-IV definition. This article in JAMA Psychiatry provides a thorough critique of the problems with the new definition. It was written by 12 of the leading PTSD experts in the world, including strong representation from experts with experience treating veterans and service members. An accompanying editorial by U.S. Veterans Affairs researchers criticizes our findings, but lacks the scientific rigor of our analysis; for example, every reference they cite we also cite in direct support of our conclusions. (more…)
Author Interviews, Cancer Research, Cost of Health Care, Global Health, Lancet / 26.05.2016

MedicalResearch.com Interview with: Dr Mahiben Maruthappu MD Senior Fellow to the CEO,NHS England Imperial College London, UK MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Maruthappu: There are over 8 million deaths due to cancer every year. At the same time, there are around 40 million unemployed people across the OECD, 7 million more than before the recent economic crisis. As a result, understanding how economic changes affect cancer survival, given the economic climate, is crucial. (more…)
Author Interviews, Heart Disease / 26.05.2016

MedicalResearch.com Interview with: Ingrid Elisabeth Christophersen MD PhD Postdoctoral research fellow Cardiovascular Research Center (CVRC) Massachusetts General Hospital MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Christophersen: Several recent studies have utilized the CHA2DS2-VASc risk score to predict risk of atrial fibrillation (AF). However, the CHA2DS2-VASc was developed for prediction of stroke risk in patients with AF and has not been validated for prediction of AF risk. We have evaluated how well the CHA2DS2-VASc performed at predicting risk of AF compared with the most validated clinical risk score for AF - the CHARGE-AF risk score - in the Framingham Heart Study. We showed that the CHARGE-AF risk score performed better at predicting risk of AF than the CHA2DS2-VASc. (more…)
Author Interviews, Brigham & Women's - Harvard, Colon Cancer, Exercise - Fitness, JAMA / 26.05.2016

MedicalResearch.com Interview with: NaNa Keum, ScD| Harvard T. H. Chan School of Public Health Department of Nutrition Departments of Nutrition and Epidemiology, Harvard T.H. Chan School of Public Health Boston, MA 02115 MedicalResearch.com: What is the background for this study? Response: While general health benefits of physical activity are well-known, evidence on its specific benefits on cancer endpoints is limited and physical activity guidelines for cancer prevention lack details in terms of the optimal dose, type and intensity of physical activity. MedicalResearch.com: What are the main findings? Response: We found that the optimal exercise regime to prevent overall digestive system cancers may be to accumulate 30 MET-hours/week of physical activity primarily through aerobic exercise and regardless of its intensity. (more…)
Artificial Sweeteners, Author Interviews, Diabetes, Weight Research / 26.05.2016

MedicalResearch.com Interview with: Jennifer L. Kuk, PhD Associate Professor York University School of Kinesiology and Health Science Toronto, Ontario MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Kuk: Artificial sweeteners are used to help individuals manage their weight, however, individuals who consume aspartame (a type of artificial sweeteners) have worse glucose metabolism than individuals with the same body weight but do not consume aspartame. This observation was only true for adults with obesity. Further, saccharin and natural sugars were not associated with differences in health after considering differences in obesity. (more…)
Author Interviews, Cancer Research, Heart Disease, JAMA / 26.05.2016

MedicalResearch.com Interview with: David Conen MD MPH Department of Medicine University Hospital Basel Basel Switzerland MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Conen: A previous study of a contemporary population with atrial fibrillation (AF) treated with oral anticoagulation showed that over a third of all deaths were due to non-cardiovascular causes, and malignancies accounted for the largest proportion of these deaths. These data suggested that AF patients may have an increased risk of malignancies, but little data existed to support this hypothesis. During more than 19 years of follow-up, our study showed that atrial fibrillation was a significant risk factor for the occurrence of malignant cancer. After taking into account a large number of other risk factors and co-morbidities, the risk of cancer was approximately 50% higher among women with new-onset AF compared to women without AF. The risk of cancer was highest in the first 3 months after new-onset AF but remained significant beyond 1 year after new-onset AF (adjusted HR 1.42, p<0.001). We also observed a trend towards an increased risk of cancer mortality among women with new-onset AF. (more…)