Dr. Grebely[/caption]
Jason Grebely PhD
Associate Professor
Senior Research Fellow (UNSW)
Viral Hepatitis Clinical Research Program
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Globally, testing and diagnosis of hepatitis C virus infection remain low. Although point of care tests for HCV infection exist, but many of these tests only measure HCV antibodies (previous exposure), not HCV RNA (active infection). Given that 25% of individuals spontaneously clear HCV infection, efforts to enhance diagnosis of chronic HCV infection and improve the HCV care cascade requires enhanced uptake of HCV RNA testing.
We conducted the first evaluation of the Xpert HCV Viral Load test (manufactured by Cepheid) - a point-of-care hepatitis C virus test that can detect active infection - from a finger-stick sample of blood. We established that there is good sensitivity and specificity of the Xpert HCV Viral Load point-of-care test using blood samples collected by finger-stick in participants attending drug health and homelessness services in Australia.
Dr. Duncan[/caption]
Laramie E Duncan, PhD
Stanford University
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Posttraumatic stress disorder (PTSD) is a mental health condition that some people experience after a traumatic event, like a terrorist attack, military conflict, or violence in the home. When people have PTSD, they may experience flashbacks to the traumatic event, nightmares, and other recollections of the event that can interfere with their day-to-day lives.
Before this study, not everyone was convinced that genetic factors make some people more prone to developing PTSD than others. Using a study of over 20,000 people and analyzing over two hundred billion (200,000,000,000) pieces of genetic information, we demonstrated that developing PTSD is partly genetic. We also found that genetic factors seem to play a stronger role for women than men, though for everyone, experiencing trauma is still the most important factor.
Dr. Yong Yu[/caption]
Dr. Yongfu Yu, PhD
Department of Clinical Epidemiology
Aarhus University Hospital
Aarhus, Denmark
MedicalResearch.com: What is the background for this study?
Response: Bereavement by the death of a close relative is ranked as one of the most severe life events and it is likely to cause psychological stress regardless of coping mechanisms. An increased risk of mortality and adverse health outcomes has been observed among the bereaved spouses, parents, and children. It is estimated that nearly 8% of individuals in the US experienced a sibling death in childhood but much less is known about its health consequences. Sibling relationship tends to be the longest and the most intimate in family thus the death of a sibling can be a devastating life event, especially when this event happens at early ages. However, to our knowledge, no study has investigated the effects of sibling death in childhood on subsequent mortality in bereaved siblings with a long follow-up time.
Dr. Eilish McCann[/caption]
Eilish McCann, PhD
Director, Outcomes Research (Center for Observational and Real-World Evidence)
Merck
MedicalResearch.com: What is the background for this study?
Response: One of the most pressing challenges facing medicine today is the emergence of bacterial resistance to antibiotics. One area of high concern is the increasing prevalence of resistance to powerful antibiotics like carbapenems, as patients with infections due to carbapenem-resistant bacteria have very few alternate effective treatment options.
In this study we used real-world data from a Becton, Dickinson and Company electronic research data set to analyze over 140,000 bacterial isolates from patients at 342 hospitals across the United States, so that we could investigate where the burden of carbapenem resistance is most acute. Importantly analysis of real-world data in this way allows us to gain insights from a large number of hospitals, giving a broad and nationally representative picture of the resistance burden.
Dr. Bibbins-Domingo[/caption]
Kirsten Bibbins-Domingo, Ph.D., M.D., M.A.S.
Lee Goldman, MD, endowed chair in medicine and professor of medicine and of epidemiology and biostatistics
University of California, San Francisco
Chair of the U.S. Preventive Services Task Force
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Prostate cancer is one of the most common cancers to affect men, and the Task Force believes all men should be aware of the benefits and harms of screening for prostate cancer. Prostate cancer screening with PSA testing can help men reduce their chance of dying of prostate cancer or of having metastatic cancer. These are important benefits but occur in a small number of men. There are risks associated with screening, specifically overdiagnosis and overtreatment with surgery and radiation that can have important side effects like impotence and incontinence.
Since the release of our 2012 recommendation, new evidence has emerged that increased the Task Force’s confidence in the benefits of screening, which include reducing the risk of metastatic cancer (a cancer that spreads) and reducing the chance of dying from prostate cancer. This draft recommendation also reflects new evidence on the use of active surveillance in men with low-risk prostate cancers that may help mitigate some of the harms in these men by allowing some men with low risk cancer to delay or avoid surgery or radiation. Therefore, in our new 2017 draft recommendation, the Task Force encourages men ages 55 to 69 to make an individual decision about whether to be screened after a conversation with their clinician about the potential benefits and harms. For men age 70 years and older, the potential benefits do not outweigh the harms, and these men should not be screened for prostate cancer.
Dr. Bajaj[/caption]
Jasmohan S. Bajaj, M.D.
Virginia Commonwealth University
Associate Professor
Department of Internal Medicine
Division of Gastroenterology
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Hepatic encephalopathy is a devastating complication of cirrhosis, which often recurs despite standard of care therapy with lactulose and rifaximin. This has a basis in an altered gut milieu therefore we need to change that in a more meaningful way to help patients. This was an FDA-monitored Phase I safety study of Fecal microbiome transfer (FMT) using a rationally-derived donor compared to standard of care.
We found that FMT was safe and was associated with lower all-cause and hepatic encephalopathy-related hospitalizations over 5 months compared to standard of care.
Dr. Moorthy[/caption]
Thurai Moorthy Ph.D.
President, MultiGEN Diagnostics
Greensboro, NC 27405
MedicalResearch.com: What is the background for this study?
Response: As more cancer related genetic markers are reported, there is a need for appropriate molecular tests to meet clinical expectations. These expectations include detection at very low amount in a heterogeneous cell population, such as Formalin Fixed Paraffin embedded (FFPE) tumor biopsies.
Braf p.V600E/K mutations are cancer-specific markers found in a variety of cancers. There are several drugs in use, and more drugs are being developed, which are prescribed only to those patients whose tumor carries either of these (Braf p.V600E/K) mutations.
Hence, detection of Braf p. V600E/K is critical in the treatment of cancer patients. In this regard, we developed a new platform technology, Allele Specific Multiplex Sequencing (ASMS, for the detection of cancer markers from biopsy samples. As a demonstration project, we tested the new platform technology for the detection of Braf p.V600E/K using tumor samples (FFPE) previously tested by two presently used methods.
Dr. Maneesh Sharma[/caption]
Maneesh Sharma, M.D
Director of Pain Medicine
MedStar Good Samaritan Hospital
Medical Director of the Interventional Pain Institute
Baltimore, Maryland
MedicalResearch.com: What is the background for this study?
Response: Opioid abuse in chronic pain patients is a major public health issue, with rapidly increasing addiction rates and deaths from unintentional overdose more than quadrupling since 1999. Just in the last year alone according to the CDC, synthetic opioid deaths have increased 72%. As a practicing interventional pain specialist, I am confronted with the challenge of assessing patient risk for opioids as I evaluate multi-modal approaches to effective pain management. Existing tools are inadequate, as they either rely on a urine toxicology test to evaluate a patient’s current potential substance abuse as a predictor of future abuse, or on a patient’s honesty to fill out a questionnaire. We know that many patients who are not currently abusing illicit drugs or misusing prescription medications can develop prescription opioid tolerance, dependence, or abuse—especially with prolonged opioid therapy. Furthermore, we know that patients who are looking to abuse medications or divert those prescriptions will obviously lie on questionnaires.
Dr. Kang Zhang[/caption]
Kang Zhang, M.D., Ph.D.
Professor of Ophthalmology
Chief, Ophthalmic Genetics
Founding Director, Institute for Genomic Medicine
Co-Director, Biomaterials and Tissue Engineering, Institute for Engineering in Medicine
Board Certification in Ophthalmology
Fellowship in Vitreoretinal Disease and Surgery
Guangzhou Women and Children's Medical Center
Guangzhou Medical University
Guangzhou China
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Retinitis pigmentosa is a common blinding condition characterized by mutations in rod photoreceptor specific genes, night blindness and tunnel visual with eventual loss of day vision. Since it can be caused by numerous different mutations in many genes therefore it has been difficult to provide treatment benefits to a majority of patients. Traditional gene therapy has been in a piece-meal fashion, meaning to create a therapy for a particular gene or mutation. In this paper, we describe a universal gene therapy approach using the latest gene editing technology CRISPR/CAS9 to reprogram rod photoreceptors to cone photoreceptors with reversal of RP and restoration of vision.
Lee Buckler, CEO
RepliCel Life Sciences
MedicalResearch.com: What is the background for this your company, RepliCel.com?
Response: RepliCel Life Sciences is a Canadian regenerative medicine company based in Vancouver, British Columbia that was founded in 2006. The company focuses on the development of cell therapies using a patient's own cells (autologous cell therapy). It is developing treatments targeted at healing chronic tendon injuries that have failed to heal properly, hair restoration, and the treatment of damaged and aged skin.
Dr. Thomas Farley[/caption]
Thomas Farley, MD, MPH
Health Commissioner
Department of Public Health
City of Philadelphia
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Messages in the mass media have been used in anti-smoking campaigns, but have not be used much for other health-related behaviors. Sugar-sweetened beverages are major contributors to the obesity epidemic in the United States, so they are an important public health target.
In this study we evaluated a brief counter-advertising campaign in a rural area of Tennessee, Virginia, and Kentucky designed to reduce consumption of these beverages. After the campaign, adults in the area were more wary of sugary drinks, and sales of sugary drinks fell by about 4% relative to changes in a matched comparison area.
Dr. Caliskan[/caption]
Aylin Caliskan PhD
Center for Information Technology Policy
Princeton University, Princeton, NJ
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Researchers have been suggesting that artificial intelligence (AI) learns stereotypes, contrary to the common belief that AI is neutral and objective. We present the first systematic study that quantifies cultural bias embedded in AI models, namely word embeddings.
Word embeddings are dictionaries for machines to understand language where each word in a language is represented by a 300 dimensional numeric vector. The geometric relations of words in this 300 dimensional space make it possible to reason about the semantics and grammatical properties of words. Word embeddings represent the semantic space by analyzing the co-occurrences and frequencies of words from billions of sentences collected from the Web. By investigating the associations of words in this semantic space, we are able to quantify how language reflects cultural bias and also facts about the world.
Ellyn Marder[/caption]
Ms. Ellyn Marder MPH
Surveillance Epidemiologist, CDC
Centers for Disease Control and Prevention
Atlanta, Georgia
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: CDC’s Foodborne Diseases Active Surveillance Network (FoodNet) report provides the most up-to-date information about foodborne illnesses in the United States. Each year, FoodNet publishes a report that includes preliminary data compared with data from the previous three years. FoodNet has been monitoring illness trends since 1996 and collects data on about 15 percent of the U.S. population.
Campylobacter and Salmonella caused the most reported bacterial foodborne illnesses in 2016, according to preliminary data. FoodNet sites alone reported 24,029 foodborne infections, 5,512 hospitalizations, and 98 deaths in 2016. The numbers of reported illnesses by germ are: Campylobacter (8,547), Salmonella (8,172), Shigella (2,913), Shiga toxin-producing E. coli (1,845), Cryptosporidium (1,816), Yersinia (302), Vibrio (252), Listeria (127) and Cyclospora (55).
This is the first time the report also includes in the total number of infections those foodborne bacterial infections diagnosed only by rapid diagnostic tests in FoodNet sites. Previously, the report counted foodborne bacterial infections confirmed only by traditional culture-based methods in the total numbers.
Dr. Christine Blume[/caption]
Dr. Christine Blume PhD
Post-Doctoral Researcher
University of Salzburg
Centre for Cognitive Neuroscience (CCNS)
Laboratory for Sleep, Cognition & Consciousness Research
Salzburg
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: We are governed by rhythmic processes. Many of these processes follow a circadian pattern, that is, they have a period length of approximately 24 hours and are under tight control of a biological master clock located in the suprachiasmatic nucleus of the hypothalamus. Given the circadian variation in global states like alertness, it is not surprising that consciousness also varies rhythmically in healthy individuals, it follows the sleep-wake cycle.
From a clinical perspective, misalignment of circadian rhythms, which occurs when the sleep-wake schedule is at odds with the light-dark cycle as in the case of night shifts, can cause considerable stress, have detrimental effects on the immune system and impair cognitive abilities. Despite the knowledge that entrained circadian rhythms are important for healthy body and brain functioning, very little is known about circadian rhythms in patients diagnosed with a disorder of consciousness (DOC) following severe brain injuries. We argue that studying circadian rhythms in DOC patients may be especially interesting and important for two reasons.
First, the presence or absence of circadian rhythms as well as anomalies in them could be informative about the state of the patient as well as their potential for recovery.
Second, this could provide information about time points that best capture remaining cognitive functions thereby minimising the risk of misdiagnoses.
Beyond this, examining circadian processes may also provide targets for therapeutic interventions such as light stimulation, which has proven successful in individuals with e.g. circadian sleep disorders. Interestingly, analyses with Lomb-Scargle periodograms revealed significant circadian rhythmicity in all patients (range 23.5-26.3h).
We found that especially scores on the arousal subscale of the Coma Recovery Scale-Revised (CRS-R) were closely linked to the integrity of circadian variations in body temperature.
Finally, we piloted whether bright light stimulation could boost circadian rhythmicity and found positive evidence in two out of eight patients.
Dr. Liu[/caption]
Leyuan Liu, Ph.D., Assistant Professor
Center for Translational Cancer Research
Institute of Biosciences and Technology
Texas A&M University
Houston, Texas 77030
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Our research team has been working on the question why people develop cancers and how we can prevent or cure them. In contrast to public views, we concluded from our studies that cancers, similar to our age-related diseases, originate from inefficiencies of our body to clean up cellular wastes accumulated during our lifespan. The most important pathway to clean up those wastes is called autophagy, or cellular self-eating behavior. We study how autophagy is regulated, how autophagy causes cancers, and whether we can control autophagy to prevent or cure cancers.
Previously we found autophagy is regulated by a protein called MAP1S and mice without MAP1S are more likely to develop liver cancer. We have been seeking ways to improve MAP1S-mediated autophagy to prevent liver cancer. Our current study show that spermidine, a natural component existing in many foods, can increase the stability of MAP1S proteins and activate MAP1S-mediated autophagy. Concurrent with the benefits of expand mouse lifespans ours also reported, spermidine can suppress the development of liver fibrosis and liver cancer specifically through MAP1S if we add spermidine into the daily drinking water of mice.
Dr. Julia Wolfson[/caption]
Julia Wolfson, PhD MPP
Assistant Professor
Department of Health Management and Policy
University of Michigan School of Public Health
Ann Arbor, MI 48109
MedicalResearch.com: What is the background for this study?
Response: Gun violence is a serious public health problem that in 2015, the most recent year for which data is available, was responsible for more than 36,000 deaths. High profile shootings in public places such as schools, nightclubs and airports have focused national attention on the threat of gun violence in public places. Many states have recently passed new laws that expand the public places where people can legally carry guns either openly or concealed on their person.
Dr. Hardy[/caption]
Shakia Hardy, MPH, CPH. PhD
Department of Epidemiology
The University of North Carolina at Chapel Hill
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Previous studies characterizing blood pressure levels across the life course have relied on prevalence estimates at a given age.
Our study was interested in identifying critical ages at which net transitions between levels of blood pressure occurred. We used data from the National Health and Nutrition Examination Survey (2007-2012) to estimate age-, race-, and sex-specific annual net transition probabilities between ideal blood pressure, prehypertension and hypertension.
We found that African Americans and men were more likely to transition from ideal levels of blood pressure in childhood or early adulthood compared to white Americans and women, which puts them at increased risk of developing prehypertension and hypertension earlier in life.
Dr, Brilakis[/caption]
Emmanouil S. Brilakis, MD, PhD
Director, Center for Advanced Coronary Interventions
Minneapolis Heart Institute
Minneapolis, Minnesota 55407
Adjunct Professor of Medicine
University of Texas Southwestern Medical School at Dallas
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Calcification in the coronary arteries might hinder lesion crossing, equipment delivery and stent expansion and contribute to higher rates of in-stent restenosis, as well as stent thrombosis. In this project we sought to examine the impact of calcific deposits on the outcomes of chronic total occlusion (CTO) percutaneous coronary intervention (PCI) in a contemporary, multicenter registry.
We analyzed the outcomes of 1,476 consecutive CTO PCIs performed in 1,453 patients between 2012 and 2016 at 11 US centers. Data collection was performed in a dedicated online database (PROGRESS CTO: Prospective Global Registry for the Study of Chronic Total Occlusion Intervention, Clinicaltrials.gov Identifier: NCT02061436).