AHA Journals, Author Interviews, Technology / 23.02.2017

MedicalResearch.com Interview with: Ricardo A Hanel, MD PhD Endovascular and Skull Base Neurosurgery Director, Baptist Neurological Institute Endowed Chair, Stroke and Cerebrovascular Surgery Jacksonville, FL MedicalResearch.com: What is the background for this study? What are the main findings? Response: Medtronic Pipeline Embolization Device has been approved for carotid artery aneurysms over 10mm in size, from the petrous to clinoid segment but given the efficacy of results on these larger lesions, it has been widely utilized for treatment of smaller lesions. PREMIER came from the need of assessing the results , safety and efficacy, of pipeline for use of aneurysms under 12mm, located on the carotid artery, all segments, and V3 segment of the vertebral artery. PREMIER enrolled 141 patients treated at 22 centers (21 US, 1 Canada). Primary Safety effectiveness defined as total aneurysm occlusion, core lab adjudicated , at 1 year was 83.5%; with safety endpoint of major stroke/death at 30 days of 1.4% (2 patients), with 1-year major stroke and death rate of 2.1%. (more…)
Author Interviews, Sexual Health, Technology / 16.02.2017

MedicalResearch.com Interview with: Dr. Krychman is Executive Director, President, and CEO of the Southern California Center for Sexual Health and Survivorship Medicine and Associate Clinical Professor at the University of California, Irvine, Department of Obstetrics and Gynecology. He is a Member of the International Society for the Study of Women’s Sexual Health (ISSWSH), The International Society for Sexual Medicine (ISSM) and a Certified Sexual Counselor by the American Association of Sexuality Educators, Counselors and Therapists (AASECT). He served as a member of the Standards Committee for the International Society for Sexual Medicine during their 2016 International Consensus Meeting.   MedicalResearch.com:  What is the background for this technology and study? What are the main findings? Response: Viveve Medical, Inc. is a women's health and wellness company committed to advancing new solutions to improve women's overall well-being and quality of life.  The internationally patented Viveve® technology and the GENEVEVE™ treatment, incorporates clinically-proven, cryogen-cooled monopolar radiofrequency (CMRF) energy to uniformly deliver non-ablative, deep penetrating volumetric heat into the submucosal layer of the vaginal introitus (opening) while gently cooling surface tissue to generate robust neocollagenesis.  One 30-minute in-office session tightens and restores the tissue around the vaginal introitus addressing the common medical condition of vaginal laxity and can improve a woman’s sexual function. VIVEVE I is a landmark study.  Results of the VIVEVE I clinical study, "Effect of Single-Treatment, Surface-Cooled Radiofrequency Therapy on Vaginal Laxity and Female Sexual Function: The VIVEVE I Randomized Controlled Trial," were recently published in the February 2017 issue of the Journal of Sexual Medicine (JSM) under the Female Sexual Function category.   Some of my high-level thoughts to reiterate from this study are: It is the first-ever large, randomized, sham-controlled study to demonstrate the safety and efficacy of energy-based procedures in gynecological applications, including vaginal laxity, which is a significant medical condition affecting millions of women worldwide that may lead to a reduction in sexual function. The primary endpoint of the VIVEVE I study was a comparison of the proportion of women reporting no vaginal laxity in the treatment group versus the sham group at 6 months post-treatment. Subjects receiving the active treatment were three times more likely to report no vaginal laxity at six months versus the sham group (p-value = 0.006). Statistically significant and sustained improvement in sexual function (baseline FSFI total score ≤26.5) after a single treatment, with an adjusted mean difference in the active group vs sham group of 3.2 at 6 months (p-value = 0.009). "Placebo Effect" in the sham group did not rise above dysfunctional (FSFI ≤26.5) and diminished at 6 months. Statistically significant improvement in sexual function was achieved in 93% of subjects in the active group vs the sham group in two individual key domains of FSFI (p-value = 0.007). Bottom line: Geneveve is a safe effective treatment that can be performed as an outpatient in one 30-minute visit to improve sexual function as it has been affected by vaginal laxity. (more…)
ALS, Author Interviews, Brain Injury, Mental Health Research, PLoS, Technology / 12.02.2017

MedicalResearch.com Interview with: Dr. Ujwal Chaudhary, PhD Institute of Medical Psychology and Behavioral Neurobiology University of Tübingen Tübingen, Germany MedicalResearch.com: What is the background for this study? Response: Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disorder which causes an Individual to be in Locked-in state (LIS), i.e. the patients have control of their vertical eye movement and blinking, and ultimately in Completely Locked-in state (CLIS), i.e, no control over their eye muscle. There are several assistive and augmentative (AAC) technology along with EEG based BCI which can be used be by the patients in LIS for communication but once they are in CLIS they do not have any means of communication.  Hence, there was a need to find an alternative learning paradigm and probably another neuroimaging technique to design a more effective BCI to help ALS patient in CLIS with communication. (more…)
Author Interviews, Psychological Science, Technology / 09.02.2017

MedicalResearch.com Interview with: Lazaros Gonidis PhD candidate Postgraduate Researcher University of Kent MedicalResearch.com: In general, why do we tend to underestimate time when we are distracted versus when we are doing something boring? Is the adage that “time flies when you’re having fun” true? Response:  In order to be accurate at time “keeping” we need to attend to it. Anything that distracts us makes us less accurate, and to be more specific, it makes us underestimate the duration of events. In simple terms when we experience an event that last 10 minutes a distraction could make it feel like 5 minutes. On the other hand when we are bored, let’s say during a non-interesting event, we tend to focus more on time keeping looking forward for the event to finish. In this case we would overestimate the event and 10 minutes could feel like 15 minutes. (more…)
Author Interviews, Mental Health Research, Pediatrics, Technology / 09.02.2017

MedicalResearch.com Interview with: Dr. Christopher J. Ferguson PhD Professor of Psychology Stetson University MedicalResearch.com: What is the background for this study? Response: The degree to which screen time influences youth across a variety of behavioral outcomes has been a source of debate and contention for decades. For many years the American Academy of Pediatrics recommended to parents that they allow older children no more than 2 hours of screen time per day. However, this number was never clearly based on good data. And in 2014 one study (Przybylski, 2014 in Pediatrics) suggested that ties between screen time and behavioral outcomes were very weak, and only seen for the most extreme screen users. So I was curious to see if these results would replicate for a large sample of US youth. (more…)
Author Interviews, Cancer Research, Technology / 01.02.2017

MedicalResearch.com Interview with: Vasileios Vavourakis Marie Skłodowska-Curie Fellow Centre for Medical Image Computing Department of Medical Physics & Biomedical Engineering Front Engineering Building, Malet Place University College London WC1E 6BT, London, UK  MedicalResearch.com: What is the background for this study? What are the main findings? Response: It is already known that chemical factors play an important role in pathological angiogenesis, the process whereby cancer induces the formation of new blood vessels to provide it with nutrients. However, there is little knowledge about how mechanical forces induced by tumour growth affect the development and functionality of this pathological vasculature. By developing a mathematical & computational model – also referred in the research community as in-silico model – of the physical and chemical interactions occurring during angiogenic cancerous growth, we aimed to provide insights about how mechanical forces influence cancer-induced angiogenesis. The most important finding of our study is that mechanical forces play a key role in solid tumour-induced angiogenesis. (more…)
Author Interviews, Heart Disease, JAMA, Race/Ethnic Diversity, Technology / 27.01.2017

MedicalResearch.com Interview with: Lucas Marzec MD Instructor of Medicine Section of Cardiac Electrophysiology Division of Cardiology University of Colorado School of Medicine Aurora, CO 80045 MedicalResearch.com: What is the background for this study? What are the main findings? Response: The addition of cardiac resynchronization therapy (CRT) to an implantable cardioverter defibrillator (ICD) reduces the risk of mortality and heart failure events in select patients with left ventricular systolic dysfunction. Given these benefits, it is important to ensure patients who have a guideline recommendation for CRT are considered for this therapy at the time of ICD implantation. Previously, little data were available on the contemporary use of CRT among guideline eligible patients undergoing ICD implantation. Although ICDs alone reduce the risk of mortality in patients with heart failure and reduced systolic function, prior work shows these devices are not uniformly provided to eligible patients and that rates of ICD implantation vary widely by hospital. Prior to our study, it was unknown whether similar variation in the use of the combination of ICD and CRT (CRT-D) exists. We analyzed data from the National Cardiovascular Data Registry (NCDR) ICD Registry to identify patient, provider, and hospital characteristics associated with CRT-D use and to determine the extent of hospital level variation in the use of CRT-D among patients eligible for CRT undergoing implantation of an ICD. (more…)
Author Interviews, Diabetes, JAMA, Technology / 23.01.2017

MedicalResearch.com Interview with: Dr Marcus Lind Associate Professor of Diabetology at the University of Gothenburg Gothenburg, Sweden Chief Physician of Diabetology, Uddevalla Hospital Uddevalla, Sweden MedicalResearch.com: What is the background for this study? Response: This was a randomized trial over 16 months (cross-over study with 26 weeks of each treatment and a between wash-out period of 17 weeks) of 161 persons with type 1 diabetes. The main purpose was to evaluate whether a “diabetes tool”, denoted continuous glucose monitoring improves the glycaemic control, known to be essential to lower risks for diabetic complications such as injuries on eyes, kidneys, nerves and the cardiovascular system. The study also evaluated whether the glucose could be stabalised, i.e. having less fluctutations (beside the average level per se) and whether well-being, treatment satisfaction and feeling more confident in the daily living to avoid low glucose values which lead influence the cognitive function and can lead to unconciousness. Earlier trials exist of this therapy in connection to insulin pumps. But it has not been tested in randomized trials with persons only using multiple daily insulin injections to administer insulin which is the most common therapy among adults with type 1 diabetes. Another novelty is that the current CGM-system (DexCom G4) has earlier shown a high accuracy and positive treatment experience among persons with type 1 diabetes, but it has not been tested in long-term randomized trials. Of note this trial was performed among adults with type 1 diabetes. Continuous glucose monitoring (CGM) is a system where the patient has a sensor subcutaneously that he/she easily can change every week. It estimates the glucose level every minute and shows values on a hand-held small monitor (size of a small cell-phone) and whether the glucose levels are rising or declining. The hypothesis with the study is that if the patient has continuous information of the glucose level and trends it will improve treatment variables. The comparison group was that patients got information of their glucose control via capillary finger sticks which has been the general treatment for a long time period but can only be made at certain occasions since a procedure where blood must be taken from the finger tips. (more…)
Author Interviews, Technology, Vitamin C, Vitamin D, Vitamin K / 17.01.2017

MedicalResearch.com Interview with: Adrienne R. Minerick, Ph.D. Associate Dean for Research & Innovation, College of Engineering Assistant to the Provost for Faculty Development Professor, Chemical Engineering Michigan Technological University Houghton, MI 49931 MedicalResearch.com: What is the background for this study? What are the main findings? Response: With seed funding from the Gerber Foundation, we asked two scientific questions. 1. Are vitamins present in tears and could we reliably detect them? 2. Do the vitamin levels in tears correlate with the vitamin levels in blood? This research, conducted by recent PhD graduate Maryam Khaksari, illustrated that vitamins are present in tears. The majority of the essential vitamins are water soluble, which were present in tears in higher concentration than fat soluble vitamins. Given that tears are 98% water, this result wasn’t surprising. This study developed up protocols to reliably detect both water and fat soluble vitamins. The limits of detection and limits of quantification did vary by vitamin, so there is ample room to improve this technique. The second question was answered by a small clinical trial with UP Health: Portage Hospital’s Pediatric Clinic. During the 4-month well-baby check-up, willing parents and their infant each donated both a blood sample and a tear sample. Vitamin concentrations were determined in the samples and correlations quantified. Fat soluble vitamin K showed the strongest concentration correlation between blood and tears. The strength of additional vitamin correlations were noted. These early-stage results demonstrate that vitamin screening from a single drop of tears (35uL or microliters) is feasible – with additional refinement. (more…)
Author Interviews, Hospital Acquired, Infections, Surgical Research, Technology / 10.01.2017

MedicalResearch.com Interview with: Alex Carignan, MD, MSc Department of Microbiology and Infectious Diseases Université de Sherbrooke, Quebec, Canada  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Although reports of iatrogenic transmission directly linked to surgical power tools (SPTs) are rare, the decontamination of such instruments is challenging due to their complex designs, which may restrict access to cleaning and sterilization agents, and because they often become contaminated after use. Most studies on infection risk with ultrasonic surgical power tools include patients who underwent phacoemulsification surgeries,but it is logical to assume that lumen contaminants, including bacteria and proteinaceous material from previous operations, may be found in neurosurgery SPTs as well. During June 2015, the infection control department at our institution was notified of an increase in the number of surgical site infection cases following craniotomy since January 2015. We investigated an outbreak of neurosurgical SSIs at a tertiary care hospital in Quebec, Canada, to identify the outbreak’s cause, and our investigation strongly suggests that modifying the reprocessing procedure of an ultrasonic surgical aspirator caused the outbreak. (more…)
Author Interviews, Infections, Nature, Technology / 08.01.2017

MedicalResearch.com Interview with: Hyo-Jick Choi, PhD Assistant Professor, Department of Chemical and Materials Engineering University of Alberta Edmonton, AB, Canada T6G 1H9 MedicalResearch.com: What is the background for this study? What are the main findings? Response: Respiratory diseases such as influenza transmitted either through breathing aerosols exhaled/coughed out by an infected person or through direct contact. Despite controversy over its efficacy, surgical mask has been widely used by general public during the past respiratory disease outbreaks because of low cost, easy wearability, and widespread use in normal day-to-day situation. Critical issue is that virus captured on the filter of the mask still maintains infectivity for long time, raising concerns of secondary infections and transmissions. This led us to develop a strain-nonspecific and reusable airborne virus deactivation system based on salt recrystallization principle. Salt recrystallization is hypothesized to cause deactivation of viruses transmitted through aerosols via two successive processes: 1) salt on filter fiber dissolves upon exposure to the pathogenic aerosols and 2) salt crystallizes as aerosols evaporate. To demonstrate the concept, we coated the fiber of the surgical mask filter with sodium chloride (NaCl) salt crystal and tested its performance using three different types of influenza viruses. Salt-treated filter provided higher filtration efficiency compared to non-treated regular filter and successfully destroyed multiple subtypes of influenza viruses trapped on the filter within few minutes, leading to significant infectivity loss. (more…)
Author Interviews, Technology / 06.01.2017

MedicalResearch.com Interview with: Lukas Bereuter, PhD Candidate University of Bern ARTORG Center for Biomedical Engineering Research Bern, Switzerland MedicalResearch.com: What is the background for this study? What are the main findings? Response: Today, most electronic implants are powered by primary batteries. After battery depletion, the whole implant has to be replaced by a surgery. This causes repeated interventions in a patients’ life, which bears the risk of complications and is costly. To overcome this problem, several groups presented prototypes of implants that are powered by solar cells that are implanted under the skin. However, precise knowledge of the actual light exposure and expectable power output of such an implant in everyday life was lacking so far. With this study, we investigated the real-life feasibility of a solar-powered implant for the first time. For this, we developed portable light measurement devices that feature solar cells and continuously measure a subcutaneous solar cell’s output power when powered by AGM Solar Batteries. The measurement devices were worn by volunteers in their daily routine in summer, autumn and winter. The study showed, that subcutaneously implanted solar cells could generate enough power in everyday-life to fully power e.g. a cardiac pacemaker. (more…)
Author Interviews, Brigham & Women's - Harvard, Hepatitis - Liver Disease, Technology / 01.01.2017

MedicalResearch.com Interview with: Prof. David A. Weitz Mallinckrodt Professor of Physics and Applied Physics School of Engineering and Applied Sciences Harvard University MedicalResearch.com: What is the background for this technology study? What are the main findings? Response: Currently, it is very time-consuming and expensive to develop new drugs. One reason is that many drugs fail in clinical trials after animal studies, simply because animals are very different from humans. One promising means of solving this problem is to replace animal experiments with artificial human tissues that can be used to directly screen a drug. However, it is a challenge to construct artificial human tissues, as almost all human tissues are composed of multiple types of cells and extracellular matrices in 3D structures. In our studies, we have successfully developed a droplet-based microfluidic technique to fabricate large numbers of monodisperse, portable microtissues. We spatially assemble different types of cells in a 3D core-shell structure and construct an artificial human microtissue in each individual drop. The specific structures we create in the microdoplets are designed to mimic the behavior of the liver, and hence we call these structures a ‘liver in a drop.’  (more…)
Author Interviews, Cancer Research, Immunotherapy, Nature, Technology, University of Michigan / 27.12.2016

MedicalResearch.com Interview with: James Moon, PhD John Gideon Searle Assistant Professor University of Michigan Dept. of Pharmaceutical Sciences and Biomedical Engineering Biointerfaces Institute Ann Arbor, MI, 48109 MedicalResearch.com: What is the background for this study? Response: The field of cancer immunotherapy has recently made a breakthrough with the clinical success of immune checkpoint inhibitors, which work by removing the brakes on immunosuppressed T-cells. However, these approaches generally work by augmenting pre-existing T-cell immunity and benefit only a subset of patients. In addition, because the majority of somatic mutations in cancer cells are unique to each patient, cancer immunotherapy may benefit from a personalized approach. (more…)
Author Interviews, Nature, Neurological Disorders, Technology / 16.12.2016

MedicalResearch.com Interview with: Bin He, Ph.D. Director, Institute for Engineering in Medicine Director, Center for Neuroengineering Distinguished McKnight University Professor of Biomedical Engineering Medtronic-Bakken Endowed Chair for Engineering in Medicine University of Minnesota, Minneapolis, MN 55455 MedicalResearch.com: What is the background for this study? What are the main findings? Response: This work is aimed at developing a noninvasive brains-computer interface to allow disabled patients to control their environment by just thinking about it. We found 8 human subjects were able to accomplish 3D reach and grasp tasks without using any muscle activities but just thinking about it. (more…)
Author Interviews, Hematology, Memory, Pediatrics, Technology / 09.12.2016

MedicalResearch.com Interview with: Steven J. Hardy, Phd Licensed Clinical Psychologist Divisions of Hematology and Oncology Children’s National Health System Assistant Professor of Pediatrics and Psychiatry & Behavioral Sciences George Washington School of Medicine and Health Sciences Washington, DC MedicalResearch.com: What is the background for this study? What are the main findings? Response: Children with sickle cell disease exhibit neurocognitive deficits as a consequence of either silent or overt cerebral infarction or disease-related non-infarct central nervous system effects (likely resulting from chronic anemia and hypoxic events). These complications often lead to impairment in executive functioning (e.g., working memory, attention, inhibition, cognitive flexibility), which can make it difficult to focus in class, plan for long-term school projects, remember and carry out multi-step tasks or assignments, and stay organized. The literature on interventions to reduce neurocognitive sequelae of sickle cell disease is extremely limited. Our research team investigated a promising home-based, computerized cognitive training program (Cogmed) involving repeated practice on performance-adapted exercises targeting working memory with a sample of youth (ages 7 – 16) with sickle cell disease. Of the participants who have enrolled in the study (n = 70), 49% exhibited working memory deficits (<25% in the general population have a working memory deficit) and were randomized to an eight-week waitlist or to begin Cogmed immediately. Participants who used Cogmed demonstrated significant improvements on multiple measures of working memory, while those randomized to the waitlist group only exhibited such improvements after receiving Cogmed. Approximately 25% of participants completed the recommended number of Cogmed sessions (20 – 25 sessions). However, analyses revealed that participants who completed at least 10 sessions (about 50% of the participants) showed comparable levels of working memory improvement. (more…)
Accidents & Violence, Anemia, Author Interviews, Hematology, Surgical Research, Technology / 05.12.2016

MedicalResearch.com Interview with: Allan Doctor, MD Pediatric Critical Care Medicine Professor of Pediatrics and (Associate) Biochemistry Washington University School of Medicine & Saint Louis Children’s Hospital St. Louis, Missouri MedicalResearch.com: What is the background for this study? What are the main findings? Response: Our research team has developed the first nanoscale artificial cells designed to emulate vital functions of natural red blood cells. If ultimately confirmed safe for use in humans, this nanotechnology-based product, called ‘ErythroMer’, could represent a new and innovative alternative to blood transfusions that would be especially valuable in situations where stored blood is needed, but difficult to obtain or use, such as in pre-hospital or battlefield settings. The artificial cells are designed to be freeze-dried, stored for extended periods at ambient temperatures, and simply reconstituted with water for immediate use. This year, the National Academy of Sciences estimated that 30,000 civilian trauma deaths/year are preventable and of these, two-thirds arise from hemorrhage in the pre-hospital phase of care. One key goal for our team is to advance treatment for trauma victims or soldiers in austere environments by initiating resuscitation in the field, particularly when transport is prolonged. ErythroMer could be a blood substitute that medics carry in their pack and literally take it out, add water, and inject. There are currently no simple, practical means to bring transfusion to most trauma victims outside of hospitals. Delays in resuscitation significantly impact outcomes; it is our goal to push timely, effective care to field settings. (more…)
Author Interviews, Education, Pediatrics, Technology / 01.12.2016

MedicalResearch.com Interview with: Dr Katie (Katherine) Twomey ESRC Future Research Leaders Fellow, Lancaster University Senior Research Associate, ESRC International Centre for Language and Communicative Development (LuCiD)   MedicalResearch.com: What is the background for this study? What are the main findings? Response: Although we know that toddlers can quickly work out what new words mean, it's not yet clear exactly how they do it. For example, when they see a new object alongside their favorite toy truck and hear a new word "block", we know that they will link "block" to the new object. They could do this by thinking in detail about what they already know, for example "if my toy is called "truck", then "block" must be the name of the new object". Equally, however, they could quickly link the new word to the new object without thinking about it in-depth. We tested this second possibility using iCub, a humanoid robot which learns by making quick associations between what it sees and what it hears, without the ability to think in detail about what it already knows. We replicated two studies of toddlers' early word learning with iCub and found that even though it can only learn through making simple links between words and objects, it behaved exactly as children did in the original experiments. (more…)
Author Interviews, MRI, Technology / 28.11.2016

MedicalResearch.com Interview with: Dr. Heron Werner Junior Clínica de Diagnóstico por Imagem – CDPI Rio de Janeiro - Brazil MedicalResearch.com: What is the background for this study? Response: A growing number of technological advancements in obtaining and viewing images through noninvasive techniques have brought major breakthroughs in fetal medicine. In general, two main technologies are used to obtain images within the uterus during pregnancy i.e. ultrasound (US) and magnetic resonance imaging (MRI). (more…)
Author Interviews, Technology / 21.11.2016

MedicalResearch.com Interview with: YuHao Liu (Howard) Materials Research Laboratory University of Illinois Urbana Champaign MedicalResearch.com: What is the background for this study? What are the main findings? Response: Our research group has been working on developing the next-generation wearable technology - integrating electronic tattoos on human skin for healthcare monitoring. This novel platform allows us to explore new sensors and actuators that are better than the commercially available ones. We have developed sensors that can measure temperature, pressure, hydration, electrophysiology..etc. However, no one ever think about capturing sound from the body until our team developed this new technology. In fact, body sounds can be important indicator in healthcare monitoring or even disease diagnostic. (more…)
Author Interviews, Ophthalmology, Technology / 20.11.2016

MedicalResearch.com Interview with: Dr. Andrew Bastawrous, Ophthalmologist Rolex Awards for Enterprise United Kingdom Dr. Bastawrous’ smartphone-based portable eye examination system, Peek Vision, allows patients in low resource setting, to be screened for vision problems and eye diseases, enabling accurate diagnosis and treatment. MedicalResearch.com: What is the background for Peek Vision? What are the main findings of your work with this system? Response: Mama Paul has been blind for almost 20 years, most of her time is spent within the safety of her tiny home. It is basic, but in her mind’s eye she can still picture where the door is, her son - Paul, lives next door and is always willing to help. Losing sight is the sense most people fear losing most. I am severely visually impaired, I am also fortunate to have perfect vision when wearing corrective glasses or contact lenses and privileged to be in the profession of ophthalmology where centuries of research and practice have brought us to a time when so much of blindness is now curable or preventable. There is no feeling like it: when the eye patch comes off someone who hasn’t seen for years, the sheer wonder as they take in their surroundings and their anticipation to see faces that have become voices and places that have become memories. Back in 2011, as I pondered and planned for the challenges that lay ahead of us in Kenya, I had the continual thought that there must be an easier way to reach people, a way that is less expensive, less resource hungry and therefore could be used on a much wider scale. In Kenya, and much of Africa, more people have access to a mobile phone than they do clean running water. It had to be possible to harness this connectivity. (more…)
ALS, Author Interviews, NEJM, Technology / 19.11.2016

MedicalResearch.com Interview with: Mariska Van Steensel PhD Nick F. Ramsey, Ph.D. Department of Neurology and Neurosurgery Brain Center Rudolf Magnus University Medical Center Utrecht Utrecht, the Netherlands MedicalResearch.com: What is the background for this study? What are the main findings? Response: Patients who are severely paralyzed due to for example ALS or brain stem stroke are often unable to speak (also called ‘ Locked-in State'), and therefore need assistive devices, such as an eye tracker, for their communication. When these devices fail (e.g. due to environmental lighting or eye movement problems), people may indicate yes or no with eye blinks in response to closed questions. This leaves patients in a highly dependent position, since questions asked may or may not represent their actual wish or comment. In the current study, we used a technology called brain-computer interfacing (BCI), to allow a patient with late-stage amyotrophic lateral sclerosis (ALS) to control a communication device using her brain signals. The patient was implanted with subdural electrodes that covered the brain area that is normally responsible for hand movement. The electrodes were connected with wires, subcutaneously, to an amplifier/transmitter device that was placed subcutaneously under the clavicle. The patient was able to generate a signal equivalent to a mouse-click with this brain-computer interface by attempting to move her hand, and used it to make selections of letters or words on her communication device, with high accuracy and a speed of 2 letters per minute. She used the brain-computer interface system to communicate whenever she was outside, as her eye-tracker device does not function well in that situation. (more…)
Author Interviews, Brigham & Women's - Harvard, Compliance, Gastrointestinal Disease, Pharmacology, Technology / 18.11.2016

MedicalResearch.com Interview with: C. Giovanni Traverso, MB, BChir, PhD Gastroenterologist and biomedical engineer Division of Gastroenterology at BWH Instructor of medicine at Harvard Medical School MedicalResearch.com: What is the background for this study? What are the main findings? Response: We developed a drug delivery system capable of safely residing in the stomach for 2 weeks. Furthermore we demonstrated the capacity of the novel dosage form, in the shape of a star, to protect the drug from the acidic stomach environment and also slowly release drug over the course of 14 days. We applied this new technology towards efforts targeting the elimination of malaria. Specifically, we focused on a drug called ivermectin that has been used to treat parasites but also has the benefit of being toxic to malaria-carrying mosquitos when they bite someone who has ivermectin in their system. (more…)
Author Interviews, Personalized Medicine, Technology / 16.11.2016

MedicalResearch.com Interview with: Dr. Kezheng Chen Lab of Functional and Biomedical Nanomaterials College of Materials Science and Engineering Qingdao University of Science and Technology Qingdao China MedicalResearch.com: What is the background for this study? What are the main findings? Response: From a view point of practical applications, superparamagnetism is usually highly desirable, because it can prevent the magnetic particles from irreversible aggregation and ensure an excellent dispersity once the applied magnetic field is removed. Up to now, the largest size of reported superparamagnetic clusters is around several hundreds of nanometers, which are composed of numerous nanocrystals, and hence exhibiting polycrystalline nature. In this sense, how to realize well pronounced superparamagnetism in large-size single crystals is of great interest to the general public. (more…)
Author Interviews, JAMA, Ophthalmology, Pediatrics, Technology / 11.11.2016

MedicalResearch.com Interview with: Krista Kelly, PhD Postdoctoral Fellow Crystal Charity Ball Pediatric Vision Evaluation Center Retina Foundation of the Southwest Dallas, TX 75231 MedicalResearch.com: What is the background for this study? Response: Amblyopia is one of the most common causes of monocular impairment in children, affecting 1 or 2 children in every US classroom. Patching of the fellow eye has been used for decades to improve visual acuity in the amblyopic eye. But patching does not always restore normal vision and does not teach the two eyes to work together. A novel technique originally designed by Drs Robert Hess and Ben Thompson at McGill University that works to reduce interocular suppression by rebalancing the contrast between the eyes has shown promising results in amblyopic adults. Dr Eileen Birch at the Retina Foundation of the Southwest worked with Dr Hess to adapt this contrast re-balancing approach to an iPad game platform suitable for children. Her research showed that the games were successful in improving visual acuity in amblyopic children as well. However, these initial games were rudimentary and resulted in low compliance. (more…)
Author Interviews, JAMA, Pediatrics, Sleep Disorders, Technology / 01.11.2016

MedicalResearch.com Interview with: Dr Ben Carter PhD Senior Lecturer in Medical Statistics Statistics Editor for the Cochrane Skin Group (Honorary Associate Professor, Nottingham University) Institute of Primary Care and Public Health Cardiff University MedicalResearch.com: What is the background for this study? What are the main findings? Response: This study leads from the growing use of mobile and media device use in children. We report the impact of devices leads to poorer sleep outcomes. MedicalResearch.com: What should readers take away from your report? Response: Using or even merely access to your mobile and media device should be restricted 90 minutes prior to bedtime. (more…)
Author Interviews, BMJ, Orthopedics, Technology / 26.10.2016

MedicalResearch.com Interview with: Jason Busse PhD Associate Professor, Department of Anesthesia McMaster University Hamilton, ON MedicalResearch.com: What is the background for this study? What are the main findings? Response: Our group previously reviewed the evidence regarding the effectiveness of low-intensity pulsed ultrasound (LIPUS) for fracture healing. We found moderate to very low quality evidence for LIPUS in accelerating functional recovery among patients with fracture, and that most trials only explored effects on surrogate outcomes (e.g. radiographic healing); only five of 13 trials directly assessed functional end points - of these, one was positive. We concluded that large trials of high methodological quality, focusing on patient important outcomes such as quality of life and return to function, were needed to establish the role of LIPUS in fracture healing. We have now completed such a study. Our large, international trial of LIPUS for surgically managed tibial fractures found the addition of LIPUS does not improve functional recovery or accelerate radiographic healing. (more…)
Author Interviews, Biomarkers, Infections, Technology / 19.10.2016

MedicalResearch.com Interview with: Ying Kong Ph.D. Assistant Professor University of Tennessee Health Science Center Department of Microbiology, Immunology, and Biochemistry Memphis, TN 38163 MedicalResearch.com: What is the background for this study? Response: Tuberculosis (TB) is a public health concern worldwide, with high morbidity and mortality. The causative agent of TB, M. tuberculosis, grows very slowly in culture. For research of TB, we need to quantitate bacterial numbers in order to evaluate drug and vaccine efficacy or to identify bacterial genes that are critical for survival in hosts or causing disease. M. tuberculosis divides every ~20 hours, which is much slower than other bacteria such as E. coli and Salmonella typhimurium, which divide every 20 minutes. Conventionally, quantitation of M. tuberculosis needs to spread M. tuberculosis on agar plates and wait for four weeks to obtain visible colonies, and then to count colony forming units. For the fast-growing bacteria, it takes only 18 hours to obtain visible colonies on agar plates. We and other groups have developed fluorescent protein labeled M. tuberculosis strains in order to quantitate M. tuberculosis in real time by measuring fluorescence. In this way, we are able to estimate bacterial number right after fluorescence measurement, which only takes a few minutes. However, this technology is not a diagnostic tool for clinical use, because the M. tuberculosis strains that we used were recombinant strains transformed with fluorescent protein genes. Another imaging technology that we have developed, REF, is for diagnosis purpose, which has been described in details in our other papers (Xie H, et al. Rapid point-of-care detection of the tuberculosis pathogen using a BlaC-specific fluorogenic probe. Nat Chem. 2012 Oct;4(10):802-9. Cheng Y, et al. Fluorogenic probes with substitutions at the 2 and 7 positions of cephalosporin are highly BlaC-specific for rapid Mycobacterium tuberculosis detection. Angew Chem Int Ed Engl. 2014 Aug 25;53(35):9360-4.). (more…)
Author Interviews, BMJ, Heart Disease, Technology / 15.10.2016

MedicalResearch.com Interview with: Dr. Ngai-yin Chan Princess Margaret Hospital Lai Chi Kok, Hong Kong MedicalResearch.com: What is the background for this study? Response: Atrial fibrillation (AF) is the most common sustained heart rhythm disorder which can cause stroke, heart failure and an increased risk of death. The risk of stroke can be reduced substantially with drug treatment. However, a quarter of patients with AF causing stroke have silent and asymptomatic AF before stroke. The current guidelines recommend opportunistic screening for AF. Whether systematic community screening for AF with a convenient smartphone ECG can reduce the burden of AF remains unknown. (more…)
Author Interviews, Brigham & Women's - Harvard, JAMA, Technology / 12.10.2016

MedicalResearch.com Interview with: Ateev Mehrotra, M.D. Associate Professor Department of Health Care Policy Harvard Medical School MedicalResearch.com: What is the background for this study? What are the main findings? Response: Prior research has highlighted that physicians make diagnostic errors roughly 10 to 15 percent of the time. Over the last two decades, computer-based checklists and other “fail-safe” digital apps have been increasingly used to reduce medication errors or streamline infection-prevention protocols. Lately, experts have wondered whether computers might also help reduce diagnostic errors. In the study, 234 internal medicine physicians were asked to evaluate 45 clinical cases, involving both common and uncommon conditions with varying degrees of severity. For each case, physicians had to identify the most likely diagnosis along with two additional possible diagnoses. Each clinical vignette was solved by at least 20 physicians. The same cases were also evaluated using 19 symptom checkers, websites or apps that use computers that help patients determine potential diagnoses for what is wrong based on their symptoms. The physicians vastly outperformed the symptom-checker apps, listing the correct diagnosis 72 percent of the time, compared with 34 percent of the time for the digital platforms. Eighty-four percent of clinicians listed the correct diagnosis in the top three possibilities, compared with 51 percent for the digital symptom-checkers. (more…)