Medical Research Journals

Prasad Adusumilli MD, FACS Associate Member, Thoracic Surgery Memorial Sloan-Kettering Cancer Center New YorkMedicalResearch.com Interview with: Prasad Adusumilli MD, FACS Associate Member, Thoracic Surgery Memorial Sloan-Kettering Cancer Center New York MedicalResearch.com: What are the main findings of the study? Answer: The current standard of care of for early-stage lung adenocarcinoma, the common form of lung cancer is curative-intent surgery either by limited resection, LR (removal of tumor with clear margins) or lobectomy, LO (removal of one-third to one-half of the lung harboring the tumor). Although lung-sparing LR is preferable, there is a reported incidence of 30-40% of recurrences within the same lung. The causative factor/s for these local recurrences is not known. In our study, we analyzed recurrence patterns and pathological features in patients who underwent 476 LO and 258 LR performed at the Memorial Sloan-Kettering Cancer Center, New York. We investigated the morphological patterns in pathology specimens utilizing the recently proposed International Association for the Study of Lung Cancer / European Respiratory Society / American Thoracic Society (IASLC/ERS/ATS) classification. We noticed that presence of micropapillary morphology was associated with three times higher recurrences in patients undergoing LR compared to LO, these recurrences were lower when there is an adequate margin (2 cm) resected beyond the tumor. In patients undergoing LO, the recurrences were 75% less.

MedicalResearch.com Interview with Frederic D. Bushman, Ph.D.  Professor, Department of Microbiology Department of Microbiology Perelman School of Medicine University of Pennsylvania 426A Johnson Pavilion 3610 Hamilton Walk Philadelphia, PA 19104MedicalResearch.com Interview with Frederic D. Bushman, Ph.D. Professor, Department of Microbiology Department of Microbiology Perelman School of Medicine University of Pennsylvania 426A Johnson Pavilion 3610 Hamilton Walk Philadelphia, PA 19104   MedicalResearch.com: What are the main findings of the study? Dr. Bushman: Viral populations in the human gut are huge, and some of the viruses change rapidly over time.

MedicalResearch.com Interview with: Satish Gopal, MD, MPH Program in Global Oncology, Lineberger Comprehensive Cancer Center UNC Project-Malawi, Tidziwe Center, Private Bag A-104, Lilongwe, Malawi MedicalResearch.com: What is the primary message our physician readers should take away from the piece?” Answer: Lymphoma is one of the leading causes of HIV-associated death in the modern ART era. In our analyses of a large multicenter US cohort, survival for HIV-associated lymphoma patients receiving routine care has not clearly improved since the modern ART era began, and remains significantly worse than SEER outcomes for the same lymphoma subtypes in the general population. This was somewhat surprising in an era of normalizing life expectancy for HIV-infected patients on ART, and quite different from the outstanding results achieved for this population in recent clinical trials conducted by AMC and NCI.

MedicalResearch.com Interview with Edna B. Foa, PhD Department of Psychiatry, University of Pennsylvania, Philadelphia MedicalResearch.com: What are the main findings of the study? Dr. Foa: Naltrexone was effective in decreasing the percentage of days drinking in people with alcohol dependence and posttraumatic stress disorder during active treatment.  Six months after treatment discontinuation, participants who received prolonged exposure therapy for PTSD drank less than those who did not receive prolonged exposure.  Participants who received a combined treatment of prolonged exposure and naltrexone had the lowest drinking level after six-month treatment discontinuation. The main message of the study is that simultaneous treatment of alcohol dependence and PTSD yield superior outcome than each treatment alone. Importantly, the findings indicated that prolonged exposure therapy was not associated with increased drinking or alcohol craving, a concern that has been voiced by some investigators. In fact, reduction in PTSD severity and drinking was evident for all four treatment groups. This finding contradicts that common view that trauma-focuses therapy is contraindicated for individuals with alcohol dependence and PTSD, because it may exacerbate PTSD symptoms and thereby lead to increased alcohol use.

MedicalResearch.com: Interview with: Samir Gupta, MD, MSCS San Diego Veterans Affairs Healthcare System Associate Professor of Clinical Medicine Division of Gastroenterology, Department of Internal Medicine Moores Cancer Center University of California San Diego MedicalResearch.com: What are the main findings? Dr. Gupta: In a randomized, comparative effectiveness study among uninsured individuals not up to date with screening, we found that mailed outreach invitations to complete colonoscopy outreach, and mailed outreach to complete a non-invasive fecal immunochemical test (FIT) tripled screening rates compared to usual care. Additionally, we found that outreach was almost twice as effective with offers for FIT versus colonoscopy screening.

MedicalResearch.com Interview with: Jelle Vehof PhD Department of Twin Research & Genetic Epidemiology King’s College London, St Thomas’ Hospital, Waterloo, London, England Department of Ophthalmology & Epidemiology University Medical Center Groningen, Groningen, the Netherlands MedicalResearch.com: What are the main findings of the study? Dr. Vehof: The current study provides the first empirical evidence that individuals with dry eye disease show altered pain sensitivity. Specifically, this study demonstrates that subjects with DED pain and discomfort complaints have lower pain threshold and pain tolerance of heat-based stimulus compared to those without. These findings support the hypothesis that a subset of persons with DED is more sensitive to pain.

MedicalResearch.com Interview with: Evelyn Wong MBBS (Hons) MPH PhD Candidate Baker IDI Heart and Diabetes Institute Level 4, 99  Commercial Rd, Melbourne. VIC 3004 MedicalResearch.com: What are the main findings of the study? Answer: Researchers at Baker IDI Heart and Diabetes Institute reviewed previously published literature on the association between diabetes and the risk of developing physical and functional disability. In this study, disability was defined by a person’s difficulty walking; carrying out daily activities such as using a telephone or transport, managing finances, shopping; or attending to basic self-care needs such as eating, dressing and bathing. Although there have been many previous studies on diabetes and disability, the findings have varied and to date, no one has pooled all studies together for a combined measure of risk. From 26 relevant studies, we measured the pooled effect of the association between diabetes and disability. We found that diabetes increased the risk of disability by 50-80% compared to those without diabetes and this result was consistent across all types of disability.

Carol S. North, MD, MPE  The Nancy and Ray L. Hunt Chair in Crisis Psychiatry Director, Program in Trauma and Disaster, VA North Texas Health Care System 4500 S. Lancaster Rd., Dallas, TX 75216 Professor of Psychiatry and Surgery/Division of Emergency Medicine UT Southwestern Medical Center 6363 Forest Park Rd. Dallas, TX 75390-8828MedicalResearch.com Interview with: Carol S. North, MD, MPE The Nancy and Ray L. Hunt Chair in Crisis Psychiatry Director, Program in Trauma and Disaster, VA North Texas Health Care System 4500 S. Lancaster Rd., Dallas, TX 75216 Professor of Psychiatry and Surgery/Division of Emergency Medicine UT Southwestern Medical Center 6363 Forest Park Rd. Dallas, TX 75390-8828 MedicalResearch.com: What are the main findings of the study? Answer: In post-disaster settings, a systematic framework of case identification, triage, and mental health interventions can guide overall mental health response and should be integrated into emergency medicine and trauma care responses.

MedicalResearch.com Interview with: Hossein Almassi, MD Professor, Cardiothoracic Surgery Medical College of Wisconsin and Zablocki VA Medical Center Milwaukee, Wi, 53226 MedicalResearch.com: What are the main findings of the study? Answer: The main findings of this study were that off-pump coronary bypass grafting did not have a positive differential impact on outcome of patients with COPD as compared to the standard operation performed on cardiopulmonary bypass.

Ole Raaschou-Nielsen, MSc, PhD  Head of Research Group for Work, Environment & Cancer Danish Cancer Society Research Center Strandboulevarden 49 2100 Copenhagen ØMedicalResearch.com Interview with: Ole Raaschou-Nielsen, MSc, PhD Head of Research Group for Work, Environment & Cancer Danish Cancer Society Research Center Strandboulevarden 49 2100 Copenhagen Ø MedicalResearch.com: What are the main findings of the study? Answer: The study shows that people who live at locations with higher levels of particles in the air are at higher risk for development of lung cancer. It seems that there is no threshold for air pollution with particles below which there is no risk; the results show that it is more like “the more air pollution the worse and the less pollution the better”. The strongest association was seen for adenocarcinoma of the lung.

Dr. Pietro Manuel Ferraro Division of Nephrology–Renal Program, Department of Internal Medicine and Medical Specialties, Columbus-Gemelli Hospital, Rome, ItalyMedicalResearch.com Interview with Dr. Pietro Manuel Ferraro Division of Nephrology–Renal Program, Department of Internal Medicine and Medical Specialties, Columbus-Gemelli Hospital, Rome, Italy MedicalResearch.com: What are the main findings of the study? Dr. Ferraro: We analyzed three large cohorts over time to see if those with prevalent or incident kidney stones might have a higher risk of developing coronary heart disease (fatal or non fatal myocardial infarction or the need for coronary revascularization). The cohorts consisted of over 200,000 participants without any prior history of coronary heart disease. After a median follow-up of over 8 years, we observed that women affected with stones seem to have a greater risk of developing coronary heart disease independent of a number of other known cardiovascular risk factors such as diabetes or high blood pressure. We did not observe a significant association among men.

Wendy Chung, MD PhD Herbert Irving Associate Professor of Pediatrics and Medicine Director of Clinical Genetics Columbia University 1150 St. Nicholas Avenue, Room 620 New York, NY 10032MedicalResearch.com Interview with: Wendy Chung, MD PhD Herbert Irving Associate Professor of Pediatrics and Medicine Director of Clinical Genetics Columbia University 1150 St. Nicholas Avenue, Room 620 New York, NY 10032 MedicalResearch.com: What are the main findings of the study? Dr. Chung: We have identified a potassium channel as a new genetic cause of pulmonary hypertension and demonstrated it as a cause of pulmonary hypertension in patients with familial disease and sporadic disease without a family history of pulmonary hypertension.  In vitro we were able to rescue several of the mutations pharmacologically.  This potassium channel now provides a new target for treatment for pulmonary hypertension.

MedicalResearch.com Interview with: Xiaolu Yang, Ph.D.MedicalResearch.com Interview with: Xiaolu Yang, Ph.D. Professor of Cancer Biology at the Perelman School of Medicine University of Pennsylvania and the Abramson Family Cancer Research Institute, MedicalResearch.com: What are the main findings of the study? Dr. Yang: TAp73 is a structural homologue of the preeminent tumor suppressor p53, but its role in tumorigenesis has been unclear. In this study, we show that TAp73 supports the proliferation of tumor cells. Mechanistically, TAp73 activates the expression of glucose-6-phosphate dehydrogenase (G6PD), a rate-limiting enzyme in the pentose phosphate pathway. This function of TAp73 is required for maintaining a robust biosynthesis and anti-oxidant defense in tumor cells. These finding connects TAp73 to oncogenic growth and suggest that G6PD may be a valuable target for tumor therapy.

Jon C. Tilburt, MD, MPH Division of General Internal Medicine, Mayo Clinic, Rochester, Minnesota Biomedical Ethics Program, Mayo Clinic Knowledge & Evaluation Research Unit, Mayo Clinic Healthcare Delivery Research Program, Center for the Science of Healthcare Delivery Division of Health Care Policy and Research, Mayo ClinicMedicalResearch.com Interview with: Jon C. Tilburt, MD, MPH Division of General Internal Medicine, Mayo Clinic, Rochester, Minnesota Biomedical Ethics Program, Mayo Clinic Knowledge & Evaluation Research Unit, Mayo Clinic Healthcare Delivery Research Program, Center for the Science of Healthcare Delivery Division of Health Care Policy and Research, Mayo Clinic What did you set out to find, what was your objective in this study?
  • We wanted to know physicians perceived roles and responsibilities in addressing health care costs as well as their enthusiasm for proposed strategies to contain health care spending.
Who did you study and what did you look at?
  • Practicing US physicians under age 65, we randomly selected 3900 physicians representing all specialties and mailed them an 8-page survey entitled “Physicians, Health Care Costs, and  Society.” We received 2,556 completed surveys (65% response rate).

Susan Matulevicius, MD, MSCS  Department of Medicine, The University of Texas Southwestern Medical Center, DallasMedicalResearch.com Interview with: Susan Matulevicius, MD, MSCS Department of Medicine, The University of Texas Southwestern Medical Center, Dallas MedicalResearch.com: What are the main findings of the study? Dr. Matulevicius: In our cohort of 535 transthoracic echocardiograms performed at a single academic medical center, we found that the majority (92%) of echocardiograms were appropriate by the 2011 Appropriate Use Criteria; however, only 1 in 3 echocardiograms lead to an active change in patient care while 1 in 5 resulted in no appreciable change in patient care.

Professor John Zajicek Professor of Clinical Neuroscience, Centre for Clinical Trials & Health Research - Translational & Stratified Medicine (Peninsula Schools of Medicine and DentistrMedicalResearch.com Interview with: Professor John Zajicek Professor of Clinical Neuroscience, Centre for Clinical Trials & Health Research - Translational & Stratified Medicine (Peninsula Schools of Medicine and Dentistry) MedicalResearch.com: What are the main findings of the study? Prof. Zajicek: Our study investigated whether dronabinol (one of the major active ingredients of cannabis) may slow the progression of multiple sclerosis. We currently have no treatments that are effective in modifying the disease course in people with either primary or secondary MS. We did a clinical trial across the UK involving nearly 500 patients, who were randomly allocated to dronabinol or placebo, and followed them up for three years to look at progression on rates. Overall we failed to find an effect of dronabinol on disease progression,  either clinically (using a variety of clinical measures) or using magnetic resonance imaging (MRI). There was a suggestion of an effect in people with the least disability (who didn't need a stick to help them walk), and there were no major problems with serious side effects.  However, over all the population that took part in the study also progressed less than we expected, which reduced our chances of finding an effect of treatment. The  study was not designed to investigate an effect on MS-related symptoms (such as pain and muscle stiffness), which have been investigated before.

Aneel Bhangu, MBChB, MRCS and Douglas M. Bowley, FRCS Royal Centre for Defense Medicine, Birmingham, EnglandMedicalResearch.com Interview with: Aneel Bhangu, MBChB, MRCS and Douglas M. Bowley, FRCS Royal Centre for Defense Medicine, Birmingham, England MedicalResearch.com: What are the main findings of the study?  Answer: Our study was a meta-analysis, which combined the findings from 8 randomized controlled trials that included a total of 623 patients. The key finding was that delayed primary skin closure (DPC) for contaminated and dirty abdominal incisions may reduce the rate of surgical site infection. However, due to high risk of bias from the included studies, including flaws in study design, definitive evidence is lacking. We believe that this meta-analysis represents an exciting development in biomedical publishing; this was a true collaboration between US and UK military surgeons to examine an area of major concern and interest to surgeons everywhere. This work uses experience hard-won on the battlefields of Iraq and Afghanistan, combined with published surgical trials, to inform both future research activity as well as military and civilian surgical practice. This cross-fertilization of ideas is one positive consequence of all the sacrifice and suffering of recent conflicts.

Andreas Beyerlein, PhD  Institute of Diabetes Research, Helmholtz Zentrum München and Forschergruppe Diabetes der Technischen Universität München, Munich, GermanyMedicalResearch.com Interview with: Andreas Beyerlein, PhD Institute of Diabetes Research, Helmholtz Zentrum München and Forschergruppe Diabetes der Technischen Universität München, Munich, Germany MedicalResearch.com What are the main findings of the study? Dr. Beyerlein: We identified respiratory infections in early childhood, especially in the first year of life, as a risk factor for islet autoimmunity, which is known as a precursor of type 1 diabetes (T1D). We also found some evidence for short term effects of infectious events on development of autoimmunity.

MedicalResearch.com Interview with Jill M. Norris, MPH, PhD Colorado School of Public Health, University of Colorado, Aurora MedicalResearch.com: What were the most significant findings? How do they relate to what was already known about this subject? Dr. Norris: One of the most intriguing findings is that if mothers are still breast-feeding when they introduce gluten-containing foods to their baby, they may reduce the risk for T1D.  This is similar to a finding from a Swedish study that found that breast-feeding while introducing gluten-containing foods may reduce the risk for celiac disease, an autoimmune condition that has several similarities with T1D. In children at increased genetic risk for T1D, our data suggest that parents should wait to introduce any solid foods until after the 4 month birthday.  And when the baby is ready, solid foods should be introduced by the 6 months birthday or soon thereafter, preferably while the mother is still breast-feeding the baby, which may reduce the risk of T1D.

MedicalResearch.com Interview with: Ann M. Sheehy, M.D., M.S. Associate Professor Division Head, Hospital Medicine University of Wisconsin Department of Medicine Ann M. Sheehy, M.D., M.S. Associate Professor Division Head, Hospital Medicine University of Wisconsin Department of Medicine MedicalResearch.com: What are the main findings of the study? Dr. Sheehy: There were three main findings of our study. First, we found that observation in clinical practice is very different from the CMS definition of observation. CMS states that observation should rarely last longer than 48 hours, yet 16.5% of our observation encounters lasted longer than 48 hours. CMS also states that observation care is “well-defined”. We found there were 1141 distinct observation codes for our 4578 observation encounters, indicating that observation care is not well defined. Second, we found that observation care disproportionately affects the general medicine population, as over half of our observation encounters were on the general medicine services. These patients also had longer length of stay, were older, more likely to be female, were more likely to need discharge to a skilled facility, and were more likely to have government insurance as compared to patients on other services. This indicates that observation care adversely affects the adult general medicine population more than other patients on other types of services. Finally, we found that observation cost was greater than reimbursement, resulting in a net negative financial margin.

Daniel Belsky, PhD NIA Postdoctoral Fellow Center for the Study of Aging and Human Development Duke UniversityMedicalResearch.com Interview with: Daniel Belsky, PhD NIA Postdoctoral Fellow Center for the Study of Aging and Human Development Duke University Polygenic risk and the development and course of asthma: an analysis of data from a four-decade longitudinal study MedicalResearch.com: What are the main findings of the study? Dr. Belsky : We looked to the largest-ever genome-wide association study of asthma (that study by the GABRIEL Consortium included more than 26,000 individuals) to identify genetic variants that could be used to construct a genetic profile of asthma risk. We then turned to The Dunedin Multidisciplinary Health and Development Study, a unique cohort of 1,000 individuals who have been followed from birth through their fourth decade of life with extensive measurements of asthma and related traits. We computed a “genetic risk score” for each person based on the variants identified in GWAS.  Then, we looked at who developed asthma, when they developed asthma, and what that asthma looked like in terms of allergic response and impaired lung function. What we found: (1) People with higher genetic risk scores were more likely to develop asthma and they developed asthma earlier in life. (2) Among children who developed asthma, the ones at higher genetic risk were more likely to have persistent asthma through midlife. (3) Genetic risk was specifically associated with allergic asthma that resulted in chronic symptoms of impaired lung function. (4) People with higher genetic risk score developed more severe cases of asthma. As compared to people with a lower genetic risk, they were more often absent from school and work because of asthma and they were more likely to be hospitalized for asthma. (5) The genetic risk score provided new information about asthma risk that could not be obtained from a family history.

Maarten C. Bosland, DVSc, PhD Professor of Pathology Department of Pathology University of Illinois at Chicago College of Medicine Chicago, IL  60612MedicalResearch.com Interview with: Maarten C. Bosland, DVSc, PhD Professor of Pathology Department of Pathology University of Illinois at Chicago College of Medicine Chicago, IL  60612 MedicalResearch.com: What are the main findings of the study? Dr. Bosland: Daily consumption of a supplement containing soy protein isolate for two years following radical prostatectomy did not reduce recurrence of prostate cancer in men at high risk for this (radical prostatectomy is surgical removal of the prostate to treat prostate cancer). The study showed that this soy supplementation was safe. It is not clear whether this result indicates that soy does not prevent the development of prostate cancer, but men that have the disease probably do not benefit from soy supplementation.

MedicalResearch.com Interview with: Dr Nazim Ghouri MBChB, MRCP UK Specialty Registrar (Diabetes/Endocrinology/GIM) and Honorary Clinical Lecturer Institute of Cardiovascular and Medical Sciences BHF Glasgow Cardiovascular Research Centre University of Glasgow Glasgow G12 8TA Lower cardiorespiratory fitness contributes to increased insulin resistance and fasting glycaemia in middle-aged South Asian compared with European men living in the UK MedicalResearch.com: What are the main findings of the study? Answer: In this study we aimed to determine the extent to which increased insulin resistance and blood sugar levels in South Asian men, compared to white European men, living in the UK, was due to lower fitness and physical activity levels. We studied 100 South Asian and 100 European men aged 40-70 years living in Scotland without diagnosed diabetes and measured their blood sugar levels, insulin resistance and other risk factors. The men also undertook a treadmill exercise test to determine how much oxygen their bodies were able to use during intense exercise – a key measure of physical fitness, wore accelerometers for a week to assess their physical activity levels, and had a detailed assessment of their body size and composition. Statistical modeling was then used to determine the extent to which body size and composition, fitness and physical activity variables explained differences in insulin resistance and blood sugar between South Asians and Europeans. The results suggested that lower fitness, together with greater body fat in South Asians, explained over 80 per cent of their increased insulin resistance compared to white men with Low fitness being the single most important factor associated with the increased insulin resistance and blood sugar levels in middle-aged South Asian compared to European men living in the UK.

MedicalResearch.com Interview with: Dr David Strain, MRCP MD Clinical senior lecturer and honorary consultant University of Exeter Medical School Institute of Biomedical and Clinical Science Department of Diabetes and Vascular Research Royal Devon & Exeter Hospital Exeter EX2 5AX MedicalResearch.com: What is the Background of the study? In early 2010 recent diabetes outcome trials such as ACCORD and ADVANCE had put into question the benefit of aggressive HbA1c reduction for all patients particularly in elderly population. After that there were several guidelines that suggested individualizing treatment targets for elderly patients according to their age, co-morbidities, frailty and baseline HbA1c. This featured in the Finnish guidelines and the European Working Party for the management of Diabetes in the Older Person. However this was also completely without any evidence base. I worked with Paivi Paldanius (the final author of the paper and a medical advisor for Novartis) to establish a pragmatic study. We both acknowledged the importance of having a patient-centric, pragmatic and 'real-life' approach and as there was already evidence that DPP-4 inhibitors, in this case vildagliptin (due to Päivi's affiliation), had demonstrated it's efficacious and had no tolerability issues in the elderly population we decided to go ahead with the study. It was obvious that we needed to implement a holistic approach and take into account as many clinically relevant parameters as possible, such as age, baseline HbA1c, duration of the disease, co-morbidities and frailty, for implementation of the individualized care. Our primary goal was to request that the physicians acting as investigators would still apply their clinical judgment based on these clinical features of each individual patient but also, follow their local guidelines as in their daily clinical practice. This would later provide us with invaluable information and perspective when interpreting the data and recommending implementation of the results.  For assessment of frailty we screened for many different methodologies but Prof Timo Strandberg (known expert of the field and mentioned in the acknowledgements section of our paper) suggested to apply modified Linda Fried's method for assessment of phenotype of frailty as this method is validated, very pragmatic, reproducible and also feasible to be used for the first time also by a non-geriatric investigator. All investigators were trained to follow these parameters by the protocol. We also wished to evaluate in parallel the conventional HbA1c drop assessment in order to be able to put the potential success of our new endpoint, meeting the individualized target, into perspective and for comparison against other standard data from other studies with DPP-4 inhibitors with elderly. We also wished to simulate a clinical, real-world setting as much as possible and included patients who would seem representative of most elderly T2DM patients.

Dr. Pim A. de Jong, Department of Radiology University Medical Center Utrecht, Heidelberglaan 100, E.01.132, 3508GA Utrecht, the Netherlands. MedicalResearch.com: What are the main findings of the study? Dr. de Jong: The main findings of the study is that lung cancer screening CT scans can predict future cardiovascular events. MedicalResearch.com: Where any of the findings unexpected? Dr. de Jong: The unexpected aspect is that the CT scans were not-ECG gated, but even these non-gated scans were good enough to quantify arterial calcifications and predict risk.

MedicalResearch.com Interview with: Mary McGrae McDermott, MD Professor of Medicine Northwestern University Feinberg School of Medicine Contributing Editor, JAMA Home-Based Walking Exercise Intervention in Peripheral Artery Disease A Randomized Clinical Trial MedicalResearch.com: What are the main findings of the study?  Answer: The goals trial found that a group-mediated cognitive behavioral intervention significantly improved six-minute walk performance, physical...

Keith Summa MD/PhD Student Northwestern University Feinberg School of Medicine Chicago, Illinois, United States of AmericaMedicalResearch.com Interview with: Keith Summa MD/PhD Student Northwestern University Feinberg School of Medicine Chicago, Illinois, United States of America   Disruption of the Circadian Clock in Mice Increases Intestinal Permeability and Promotes Alcohol-Induced Pathology and Inflammation MedicalResearch.com: What are the main findings of the study? Answer: The main findings of the study were that disruption of circadian rhythms, which we achieved using independent genetic and environmental strategies in mice, leads to impaired function of the intestinal epithelial barrier. This loss of epithelial barrier integrity, which has been associated with numerous diseases, results in "gut leakiness," a phenomenon in which endotoxin from gut bacteria can cross the intestinal wall and enter circulation, promoting inflammation. In particular, using in a disease model of gut-derived endotoxemia and inflammation, alcoholic liver disease, we found the circadian disruption interacted with alcohol, leading to increased gut leakiness, inflammation and liver damage.

MedicalResearch.com Interview with Batool Haider, MD, MS, DSc candidate Departments of Epidemiology and Nutrition School of Public Health Harvard University Anaemia, prenatal iron use, and risk of adverse pregnancy outcomes: systematic review and meta-analysis MedicalResearch.com: What are the main findings of the study? Dr. Haider: The main findings of the study are that iron use in the prenatal period increased maternal mean haemoglobin concentration by 4.59 (95% confidence interval 3.72 to 5.46) g/L compared with controls and significantly reduced the risk of anaemia (relative risk 0.50, 0.42 to 0.59), iron deficiency (0.59, 0.46 to 0.79), iron deficiency anaemia (0.40, 0.26 to 0.60), and low birth weight (0.81, 0.71 to 0.93). The effect of iron on preterm birth was not significant (relative risk 0.84, 0.68 to 1.03). Analysis of cohort studies showed a significantly higher risk of low birth weight (adjusted odds ratio 1.29, 1.09 to 1.53) and preterm birth (1.21, 1.13 to 1.30) with anaemia in the first or second trimester. Exposure-response analysis indicated that for every 10 mg increase in iron dose/day, up to 66 mg/day, the relative risk of maternal anaemia was 0.88 (0.84 to 0.92) (P for linear trend<0.001). Birth weight increased by 15.1 (6.0 to 24.2) g (P for linear trend=0.005) and risk of low birth weight decreased by 3% (relative risk 0.97, 0.95 to 0.98) for every 10 mg increase in dose/day (P for linear trend<0.001). Duration of use was not significantly associated with the outcomes after adjustment for dose. Furthermore, for each 1 g/L increase in mean haemoglobin, birth weight increased by 14.0 (6.8 to 21.8) g (P for linear trend=0.002); however, mean haemoglobin was not associated with the risk of low birth weight and preterm birth. No evidence of a significant effect on duration of gestation, small for gestational age births, and birth length was noted.

MedicalResearch.com Interview with: Jonas Eriksson, PhD-student Clinical Epidemiology Unit Karolinska Institutet, T2 171 76 STOCKHOLM Sweden Biological vs Conventional Combination Treatment and Work Loss in Early Rheumatoid Arthritis A Randomized Trial MedicalResearch.com:  What are the main findings of the study? Answer: The main finding from this study is that in patients with early rheumatoid arthritis and with an insufficient response to methotrexate, addition of biologic (infliximab) or conventional combination therapy (sulfasalazine+hydroxychlorquine) resulted in significant improvements in work ability over 21 months. However, at 21 months, no significant difference could be detected in work ability change between patients randomized to addition of biologic or conventional therapy. When comparing the randomized early rheumatoid arthritis patients to matched general population comparators, the average number of days of work loss did not return to the level of the general population, underscoring the need for more effective treatment strategies and earlier diagnosis.

MedicalResearch.com Interview with: Dr Patrick Freund Spinal Cord Injury Center Balgrist University Hospital Zurich, University of Zurich Forchstrasse 380 8008 Zurich, SwitzerlandDr Patrick Freund Spinal Cord Injury Center Balgrist University Hospital Zurich, University of Zurich Forchstrasse 380 8008 Zurich, Switzerland MedicalResearch.com: What are the main findings of the study? Dr. Freund: Novel interventions targeting acute spinal cord injury (SCI) have entered clinical trials, but neuroimaging biomarkers reflecting structural changes within the central nervous system are still awaited. In chronic SCI, neuroimaging provided evidence of structural changes at spinal cord and brain level that could be related to disability. However, the pattern and time course of these structural changes and their potential to predict clinical outcomes is uncertain. In a prospective longitudinal study, thirteen patients with acute traumatic SCI were assessed clinically and by longitudinal MRI (within five weeks of injury, after two, six and twelve months) and were compared to eighteen healthy controls. Cross-sectional cord area, cranial white matter (CST) and grey matter (cortex) volume decrease was evident at baseline and progressed over twelve months. Multi-parametric mapping of myelin sensitive magnetization transfer (MT) and longitudinal relaxation rate (R1) was reduced both within and beyond the areas of atrophic changes. Better neurological and functional outcomes were associated with less atrophic changes of the CST in both cord and brain.