MedicalResearch.com Interview with:Alan S. Brown, M.D., M.P.H.
Professor of Clinical Psychiatry and Clinical Epidemiology College of Physicians and Surgeons of Columbia University Director
Unit in Birth Cohort Studies Division of Epidemiology New York State Psychiatric Institute
New York, NY
MedicalResearch.com: What are the main findings of the study?Dr. Brown: We found that a mother's exposure to influenza during pregnancy, documented by antibodies in her serum, increased the risk of bipolar disorder with psychotic symptoms in her offspring. We did not show a relationship between influenza and bipolar disorder not accompanied by psychosis.
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MedicalResearch.com Interview with:Chunxue Bai, MD & PhD
Director, Shanghai Respiratory Research Institute
Professor of Medicine, Chairman, Shanghai Leading academic discipline
Chair, Chinese Alliance against Lung Cancer
MedicalResearch.com: What are the main findings of the study?Dr. Bai: Recently, we found a dilemma phenomenon that the incidence of chronic obstructive pulmonary disease (COPD) and lung cancer has remained high in southwest China despite the 1976 National Stove Improvement Program for indoor air quality.
However, little information is known to the public about a regional endemic related to Chinese waterpipe smoking, which is different from the Arabic waterpipe. The Chinese waterpipe has been traditionally misconceived as less harmful for three reasons:
(1) no charcoal was used in contrast to the Arabic waterpipe,
(2) tobacco smoke passed through the water as opposed to cigarette smoking and
(3) smoking through a large volume waterpipe could “improve lung function.”
In our study, we provide robust results that the large volume Chinese waterpipe use and exposure are associated with the elevated prevalence of COPD, which have been identified by epidemiologic, physiologic, radiology, and toxicologic findings for the first time.
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MedicalResearch.com Interview with: Minesh P. Mehta, M.B., Ch.B. F.A.S.T.R.O.
Professor of Radiation Oncology,
University of Maryland School of Medicine
Radiation oncologist, University of Maryland Marlene and Stewart Greenebaum Cancer Center
MedicalResearch.com: What are the main findings of the study?Dr. Mehta: RTOG 0825 was a clinical trial evaluating whether the addition of a novel drug that inhibits tumor vascular growth, bevacizumab, to the standard of care for glioblastoma, an aggressive brain tumor, would prolong survival. Patients were allocated randomly to one of two different treatment regimens – the standard of care, which includes radiotherapy and a drug known as temozolomide, or another regimen of radiation, temozolomide and bevacizumab. The trial design was double-blinded, and therefore, on one arm patients received the bevacizumab, whereas on the other arm they received a placebo. The survival on both arms was equivalent, and therefore it was fairly concluded that bevacizumab failed to prolong survival when given initially as part of treatment for glioblastoma.
Freedom from progression, referred to as progression-free survival was also measured on this trial, and although bevacizumab appeared to lengthen progression-free survival, this level of benefit did not meet the pre-defined goals, and is therefore regarded as statistically not demonstrating an improvement.
Additional endpoints included outcomes reported by the patient, including the burden of symptoms, and the impact of these on the quality of life, as well as effects on the brain, known as neurocognitive changes. Bevacizumab did not improve these endpoints either.
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MedicalResearch.com Interview with: Bodour Salhia, PhD
Assistant Professor
Integrated Cancer Genomics Division
Translational Genomics Research Institute
Phoenix, Arizona, 85004
MedicalResearch.com: What are the main findings of the study?Dr. Salhia: Our study identified novel rare genomic and epigenomic events underlying breast cancer metastasis to brain. We demonstrated that we could molecularly subtype breast cancer brain metastasis the same way we can subtype primary breast cancer. From this analysis we found that the Luminal B subtype was the most common subtype in our cohort, followed by Her2+/ER- enriched tumors and Basal-like tumors. Each of these subtypes displayed genetic and epigenetic features reminiscent of primary breast cancer. We demonstrated that these tumors have a strong predilection to grow by activating pathways involved in G2/M cell cycle progression, whereas, many genes involved in cell migration were epigenetically silenced. Broad amplification of chromosome 8q was common, which resulted in the upregulation of important genes.
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MedicalResearch.com Interview with:Jiyoung Ahn, PhD
Assistant Professor of Epidemiology
Department of Population Health
NYU School of Medicine
New York, NY 10016
MedicalResearch.com: What are the main findings of the study?Dr. Ahn: Before we did our research, it was suspected that gut bacteria were related to colorectal cancer. We, for the first time, found colorectal cancer patients have a different gut bacteria composition than healthy subjects.
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MedicalResearch.com Interview with: Carlos A. Morillo, MD, FRCPC, FACC, FHRS, FESC
Professor Department of Medicine, Cardiology Division
Program Director Cardiac Electrophysiology and Autonomic Physiology Fellowship ,Hamilton, ON, Canada
MedicalResearch.com: What are the main findings of the study?Dr. Morillo: The main findings were that Ablation of atrial fibrillation was superior to conventional antiarrythmic drug therapy in patients with Paroxysmal atrial fibrillation that had not been treated with Antiarrhythmic medications. Ablation extended the time to first recurrence of atrial fibrillation within the 2 year follow-up of the study and significantly reduced the recurrence of repeated episodes of AF.
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MedicalResearch.com Interview with:Norbert Stefan, MD
Heisenberg Professorship for Clinical and Experimental Diabetology
Department of Internal Medicine IV
University Hospital Tübingen
Tübingen, Germany
MedicalResearch.com: What are the main findings of the study?Dr. Stefan: Currently there is little evidence for an effective and safe pharmacological treatment of nonalcoholic fatty liver disease (NAFLD). Based on the fact that inhibition of 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1), the enzyme, that converts inactive cortisone into active cortisol in metabolic tissues such as liver and adipose, was found to be effective to improve lipid metabolism in animals, we hypothesized that inhibition of 11β-HSD1 may also prove to be effective to decrease liver fat content in patients with NAFLD. In our 12 week trial in 82 patients with NAFLD, inhibition of 11β-HSD1 with RO5093151 resulted in a 14 % decrease of liver fat content and in a resolution of NAFLD in 20 % of the patients. This was accompanied by a decrease of liver enzymes. Furthermore, inhibition of 11β-HSD1 brought about a reduction of body weight and total body- and visceral adipose tissue mass, while insulin sensitivity did not change. In agreement with findings from other trials, also in our study 11β-HSD1 inhibition was well tolerated and safe.
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MedicalResearch.com Interview with: Prof. Nicholas J. Wald
Wolfson Institute of Preventive Medicine
Barts and the London School of Medicine and Dentistry
Queen Mary University of London
London, United Kingdom
MedicalResearch.com: What are the main findings of the study?Prof Wald: The percentage of women who become pregnant without having taken folic acid supplements to reduce the risk of a neural tube defect declined from a relatively low proportion (35%) to an even lower one (31%) between 1999 and 2012.
Moreover such use of folic acid in some groups of the population is much lower for example 17% in Afro-Caribbean women and 6% in women aged under 20.
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MedicalResearch.com Interview with:Dorothy D Dunlop, PhD
Professor, Medicine-Rheumatology
Center for Healthcare Studies - Institute for Public Health and Medicine and Preventive Medicine
Northwestern University Feinberg School of Medicine
MedicalResearch.com: What are the main findings of the study?Dr. Dunlop: We know being active, especially doing moderate activity like taking a brisk walk, is good for health. We know a sedentary lifestyle leads to health problems. What we do not know is whether or not those are two ways of looking at the same question. Does being sedentary like sitting just reflect insufficient activity OR is sedentary time is a separate and distinct risk factor for health problems. Our physical activity research group looked at national US data from the National Health and Nutrition Examination Survey. This is an important study because they monitored physical activity using an accelerometer. We found sedentary behavior such as sitting was its own separate risk factor for disability.
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MedicalResearch.com Interview with: Krishnansu S. Tewari, MD, FACOG, FACS| Professor & Director of Research
Principal Investigator - The Gynecologic Oncology Group at UC Irvine, Division of Gynecologic Oncology
University of California, Irvine Medical Center
Orange, CA 92868
MedicalResearch.com: What are the main findings of the study?Dr. Tewari: The main findings of this study were that the addition of bevacizumab to chemotherapy resulted in a significantly improved survival of 3.7 months in a population of patients that have very limited options. This improvement in overall survival was not accompanied by any significant deterioration in quality of life and serious side effects were limited to 3% to 8% of the study population.
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MedicalResearch.com Interview with:Dr Abi Fisher PhD
Senior Researcher, Cancer Research UK
Health Behaviour Research Centre
University College London
MedicalResearch.com: What are the main findings of the study? (more…)
MedicalResearch.com: Interview with:Dr Heike Daldrup-Link
Associate Professor of Radiology
Stanford University School of Medicine, Palo AltoMedicalResearch.com: What are the main findings of the study?Answer: We use magnetic resonance imaging, a technology based on magnetic fields rather than radiotracers or x-rays. The underlying technology is not new – it has been used for tumor staging for many years. This is an advantage as MR scanners are available in nearly every major Children’s Hospital where children with cancer are treated. What is new about our approach is that we combined anatomical and functional images, similar to current approaches that use radiotracers and CT (PET/CT): We first acquired scans that showed the anatomy of the patient very well and we then acquired scans that depict tumors as bright spots with little or no background information. We did that by using an iron supplement as a contrast agent: The iron supplement can be detected by the MRI magnet and improved tumor detection and vessel delineation MR scans. We then fused the anatomical scans with the tumor scans.
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MedicalResearch.com Interview with:Mike K.Liang, MD,
Department of Surgery,
The University of Texas Health
Sciences Center, Lyndon B. Johnson Hospital,Houston, TX 7702
MedicalResearch.com: What are the main findings of the study?Dr. Liang: Compared to suture repair, mesh repair of primary ventral hernias (umbilical, epigastric, spigelian, lumbar), the most common type of ventral hernias, is associated with fewer hernia recurrence but slightly more seromas and surgical site infections.
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MedicalResearch.com Interview with: Dr. Jane Muncke PhD
Managing Director
Food Packaging Forum Foundation
Zurich, Switzerland
MedicalResearch.com: What are the main conclusions from your work?Answer:Food packaging is a relevant, but still under-recognized source of chemical contamination in foods. Everybody is exposed to these chemicals on a daily basis, but we have very little understanding of the actual health effects caused by this chronic exposure source. We propose that epidemiological research tackles chemical exposures from food packaging as a new and highly relevant exposure source. Epidemiologist have played crucial roles in advancing understanding of health issues, for example cardiovascular disease caused by fine particulate air pollution. Through their work they have encouraged toxicologists to ask different questions, thereby supporting the generation of critical knowledge and, essentially, enabling prevention.
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MedicalResearch.com Interview with:Ganesh Raghu, M.D.,FCCP, FACP
Professor of Medicine & Lab Medicine (Adjunct)
Division of Pulmonary & Critical Care Medicine
University of Washington(UW)
Director,CENTER for Interstitial Lung Disease (ILD),UW Medicine,
ILD, Sarcoid and Pulmonary Fibrosis Program
Co-Director, Scleroderma Clinic, UW Medical center(UWMC)
Seattle, WA 98195
MedicalResearch.com: What are the main findings of the study?Dr. Raghu: In a subgroup of patients with typical clinical features of Idiopathic pulmonary fibrosis ( IPF) , further evaluation by a thorough evlauation by regional experts experienced in management of idiopathic pulmonary fibrosis and related diseases may lead to a diagnosis of idiopathic pulmonary fibrosis without the need for surgical lung biopsy if the HRCT features have a Possible-UIP pattern AND if there are no suspicion for environmental factors or collagen vascular diseases to explain the pulmonary fibrosis .
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MedicalResearch.com Interview with: Sammy Elmariah, MD, MPH
Massachusetts General Hospital
Boston, MA
MedicalResearch.com: What are the main findings of the study?Dr. Elmariah: Within the randomized PARTNER I trial, we evaluated the effect of left ventricular (LV) dysfunction on clinical outcomes after transcatheter and surgical aortic valve replacement (TAVR and SAVR, respectively) and the impact of valve replacement technique on recovery of LV function. We found that LV dysfunction, defined as an LV ejection fraction < 50%, had no impact on 30-day and 1-year mortality after either TAVR or SAVR. In those with baseline LV dysfunction, marked improvement in LV ejection fraction was observed within 30-days of valve replacement in approximately half of patients, with an equivalent degree of improvement observed after TAVR and SAVR. Permanent pacemaker at study entry, low mean aortic valve gradient, and high LV ejection fraction were associated with reduced odds of LV functional recovery after valve replacement.
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MedicalResearch.com Interview with: Sadeq A. Quraishi, MD, MHA
Massachusetts General Hospital, Harvard Medical School
Boston, Massachusetts
MedicalResearch.com: What are the main findings of the study?Dr. Quraishi: Our retrospective study suggests that there is an association between pre-operative 25-hydroxyvitamin D [25(OH)D] levels and the risk of hospital-acquired infections after gastric bypass surgery. In particular, patients with 25(OH)D levels <30 ng/ml before surgery were almost 4 times more likely to develop a surgical site infection within 30 days of surgery than patients with pre-operative 25(OH)D levels at 30 ng/ml or higher.
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MedicalResearch.com Interview with:Anton P. Porsteinsson M.D.
William B. and Sheila Konar Professor of Psychiatry
Director, Alzheimer's Disease Care, Research and Education Program (AD-CARE)
University of Rochester School of Medicine and Dentistry
Rochester, N.Y. 14620
MedicalResearch.com: What are the main findings of the study?Dr. Porsteinsson: Identifying drugs outside the antipsychotic class with targeted anti-agitation effects that provide greater benefit or lower risk among patients with Alzheimer’s disease is a research priority. Citalopram, a selective serotonin reuptake inhibitor (SSRI), is frequently used in older individualsand has been suggested as an alternative to antipsychotic drugs for agitation and aggression in dementia. Among 186 patients with probable Alzheimer’s disease and agitation receiving psychosocial intervention, the addition of citalopram compared with placebo robustly and significantly reduced agitation and caregiver distress, but modest cognitive and cardiac adverse effects of citalopram may limit its practical application at the 30 mg/d dose studied in this trial. There are insufficient data on efficacy for agitation at lower doses of citalopram.
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MedicalResearch.com Interview with:Maria Lorenza Muiesan
Department of Clinical and Experimental Sciences
University of Brescia, Internal Medicine
Brescia, Italy.
MedicalResearch.com: What are the main findings of the study?Dr. Muisean: An increase in the ratio of retinal arteries wall thickness to lumen diameter may serve as an in-vivo parameter of microvascular damage. We conducted a study that examined the relationship between changes in retinal arterioles wall thickness/ lumen diameter and several measures of blood pressure, including clinic brachial blood pressure, 24 hours brachial blood pressure and central aortic blood pressure. We found that the an increase of wall-to-lumen ratio of retinal arterioles was most closely related to 24 hours blood pressure.
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MedicalResearch.com: Interview with:Sylvia Lui
Tommy’s Maternal and Fetal Health Research Centre
The University of Manchester
MedicalResearch.com: What are the main findings of the study?Answer:The research shows women who drink alcohol at moderate or heavy levels in the early stages of their pregnancy might damage the growth and function of their placenta – the organ responsible for supplying everything that a developing infant needs until birth
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MedicalResearch.com Interview with:Caroline A. Kim, MD, MS;
Beth Israel Deaconess Medical Center
Boston, MA 02215.
MedicalResearch.com: What are the main findings of the study?Dr. Kim:We conducted a systematic review of 62 studies that examined functional status and quality of life in patients who underwent transcatheter aortic valve replacement (AVR) for their symptomatic severe aortic valve stenosis. In 11,205 patients who underwent TAVR, a clinically meaningful improvement was seen in physical functional measures and disease-specific quality of life measures, whereas improvement in psychological measures or more general health measures were modest and inconsistent. Given the dismal prognosis of severe aortic stenosis treated conservatively, it was clear that transcatheter AVR improved functional status and quality of life. However, there was insufficient evidence that compares these patient-centered outcomes between transcatheter AVR and surgical AVR.
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MedicalResearch.com Interview with: M. Arfan Ikram, MD, PhD
Departments of Radiology, Epidemiology, and Neurology
Erasmus Medical Center,
Rotterdam, the Netherlands
MedicalResearch.com: What are the main findings of the study?Dr. Ikram:The main finding of the study, carried out within the Rotterdam Study and led by drs. Daniel Bos and Arfan Ikram (both from the Erasmus Medical Center Rotterdam, the Netherlands), was that intracranial atherosclerosis is a major risk factor for stroke in the Western (white) population. Traditionally, intracranial atherosclerosis has not been considered of major importance to stroke risk in Western populations. In contrast, most research on intracranial atherosclerosis originates from Asian and African populations, where is was actually recognized as the most important risk factor of stroke. Our study demonstrates that also in the Western population intracranial atherosclerosis is a major risk factor for stroke and should get more focus in clinical practice. Moreover, our findings indicate that its contribution to the proportion of all strokes is greater than that of atherosclerosis in other vessel beds that are further away from the brain.
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MedicalResearch.com Interview with:Dr Clare Llewellyn PhD Cpsychol
Lecturer in Behavioural Obesity Research
Health Behaviour Research Centre
Department of Epidemiology and Public Health
University College London, London
MedicalResearch.com: What are the main findings of the study?Dr. Llewellyn:This study indicated that appetite – and, in particular, satiety sensitivity (how quickly you feel full during eating, or how long you remain full after eating) – could be one of the mechanisms through which ‘obesity genes’ influence body weight.
We know that body weight has a strong genetic basis, but the mechanisms through which ‘obesity genes’ influence weight are largely unknown.
We showed that children with a higher genetic predisposition to obesity (estimated from a score comprising 28 known obesity-related genes) not only had more body fat (a larger BMI and waist circumference), but importantly they were also less sensitive to satiety.
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MedicalResearch.com Interview with:Jinping Zheng MD FACCP
on behalf of Prof. Nanshan Zhong
--Jinping Zheng, MD, FCCP
Guangzhou Institute of Respiratory Disease
First Affiliated Hospital of Guangzhou Medical University
151 Yanjiang Rd. Guangzhou 510120, China
MedicalResearch.com: What are the main findings of the study?
Answer: PANTHEON is the largest, evidence-based study of long-term treatment with N-acetylcysteine (NAC) in COPD patients conducted to date. The main finding of this study is that 1-year of treatment with high dose NAC (600mg twice daily) was effective at reducing exacerbations in patients with COPD, especially in the earlier stage [GOLD II (moderate) of disease. NAC was well tolerated.
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MedicalResearch.com Interview with:Henry R. Kranzler, MD
Professor, Department of Psychiatry
Director of the Center for Studies of Addiction.
University of Pennsylvania Perelman School of Medicine, Philadelphia
MedicalResearch.com: What are the main findings of the study?Dr. Kranzler: The study had two main findings:
First, topiramate, at a maximal dosage of 200 mg/day, which is lower than the 300 mg/day used in prior treatment trials, substantially reduced the frequency of heavy drinking and increased the frequency of abstinent days more than placebo. The lower dosage was well tolerated.
Second, a variant in a gene that encodes a receptor subunit that binds topiramate moderated the response to topiramate. That is, C-allele homozygotes in the single nucleotide polymorphism rs2832407 in GRIK1, the gene encoding the GluK1 subunit of the kainate receptor, were the subgroup that accounted for the effects of topiramate on heavy drinking. This has important implications for the personalized treatment of alcohol use disorder, in that 40% of people of European ancestry have this genotype and, if confirmed, these findings would make it possible to screen people genetically to select an effective treatment.
MedicalResearch.com Interview with:Dorte Vistisen
Senior researcher, MSc PhD
469 - Epidemiology
DK-2820 Gentofte Denmark
MedicalResearch.com: What are the main findings of the study?Dr. Vistisen: Our study highlights the complexity of type 2 diabetes. We show that in most people the development of type 2 diabetes is preceded by many years of overweight and not by massive weight gain.
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MedicalResearch.com Interview with:
Jun-ichi Nishimura, M.D., Ph.D.
Assistant Professor Department of Hematology and Oncology
Osaka University Graduate School of Medicine
C9, 2-2 Yamadaoka, Suita,...
MedicalResearch.com Interview with:Gemma Taylor MSc MBPsS Doctoral Researcher
and
Paul Aveyard and PhD MRCP MRCGP FFPG Professor of Behavioral Medicine
Fellow of Wolson College
Primary Care Clinical Sciences
The University of Birmingham
Birmingham United Kingdom
MedicalResearch.com: What are the main findings of the study?Answer: Smoking cessation is associated with improvements in mental health compared with continuing to smoke. The effect sizes seem as large for those with psychiatric disorders as those without and are equal or larger to effect estimates of antidepressant treatment for mood and anxiety disorders.
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MedicalResearch.com Interview:Dr. John McBeth
Arthritis Research UK Primary Care Centre
Keele University in Staffordshire
MedicalResearch.com: What are the main findings of the study?Dr. McBeth: In this study, reporting musculoskeletal pain was common with just under half of participants reporting some pain and one quarter reporting widespread pain. Of those who were free of WP at baseline, 19% reported new onset widespread pain at three year follow up.
In addition to osteoarthritis, sleep, cognitive impairment, anxiety and physical health independently predicted the onset of widespread pain and are important treatment targets. In this study non-restorative sleep was the strongest predictor of new onset widespread pain. Sleep is a modifiable target that could improve outcome in this patient group.
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