Author Interviews, Breast Cancer, Genetic Research, NEJM / 07.08.2014

Dr Marc Tischkowitz MD PhD University Lecturer (Associate Professor) and Honorary Consultant Physician in Medical Genetics Department of Medical Genetics, University of CambridgeMedicalResearch.com Interview with: Dr Marc Tischkowitz MD PhD University Lecturer (Associate Professor) and Honorary Consultant  Physician in Medical Genetics Department of Medical Genetics, University of Cambridge Medical Research: What are the main findings of the study? Dr. Tischkowitz: The PALB2 gene was first identified in 2006 and linked to breast cancer in 2007 but until now we have not had good breast cancer risk estimates for women who have inherited PALB2 mutations. This study was started in 2009 by an group of research institutions (The PALB2 Interest Group) in Canada, US, Europe (UK, Belgium, Greece, Italy, Finland) and Australia. We studied 362 individuals with PALB2 mutations from 154 families. We found that awomen with a PALB2 mutation will on average have a 35% risk of developing breast cancer by the age of 70, rising to 58% if there is a strong family history. Our study will help clinicians to better advise and manage such women. There are several new aspects.
  • It is by far the largest study to date and provides the most accurate risk estimates for PALB2 mutation carriers.
  • It shows that the breast cancer risk is modified by the family history. (more…)
Author Interviews, JAMA, Surgical Research / 06.08.2014

MedicalResearch.com Interview Cristina B. Geltzeiler, MD Knight Cancer Institute Oregon Health & Science University Portland, OR 97239-3098 Medical Research: What are the main findings of the study? Dr. Geltzeiler: The main findings of the study are that implementing an Enhanced Recovery After Surgery (ERAS) program at a community hospital can be successfully implemented and can allow patients to recover quicker from their surgery with ongoing safety. (more…)
Addiction, Author Interviews, JAMA / 06.08.2014

Dr. Richard Saitz MD MPH Department of Community Health Sciences Boston University School of Public Health Boston, Massachusetts MedicalResearch.com Interview with: Dr. Richard Saitz MD MPH Department of Community Health Sciences Boston University School of Public Health Boston, Massachusetts Medical Research: What are the main findings of the study? Dr. Saitz: We found that brief counseling interventions had no efficacy for reducing the frequency of illicit drug use or drug use consequences among primary care patients identified by screening as using drugs. (more…)
Author Interviews, General Medicine, Heart Disease, JAMA / 06.08.2014

Maurizio Gasparini, MDMedicalResearch Interview with: Maurizio Gasparini MD Humanitas Research Hospital Rozzano, Italy Medical Research: What are the main findings of the study? Dr. Gasparini: We found that a strategic programming of implantable cardioverter defibrillators which allows the non-sustained arrhythmias to self-terminate is associated with reductions in hospitalizations, length of hospital stay and cost per patient-year and an increase in the time to first hospitalization. These results were mainly driven by reduction in cardiovascular-related events. (more…)
Allergies, Author Interviews, Dermatology, JAMA / 06.08.2014

upcoming JAMA publication: Shuen-Iu Hung, PhD, for the Taiwan SCAR consortium Associate Professor, Department of Pharmacology, National Yang-Ming University, Taipei, 112 TaiwanMedicalResearch.com Interview with: Shuen-Iu Hung, PhD, for the Taiwan SCAR consortium Associate Professor, Department of Pharmacology, National Yang-Ming University, Taipei, 112 Taiwan   Medical Research: What are the main findings of the study? Reply: Phenytoin, a widely prescribed antiepileptic drug, can cause severe cutaneous adverse reactions (SCAR) (e.g., Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN) ), which carry high mortality and morbidity. The genomic basis of phenytoin-induced SCAR has not been known. This study identifies CYP2C variants, including CYP2C9*3 known to reduce drug clearance, as the key genetic factors associated with phenytoin-related severe cutaneous adverse reactions. These findings have potential to improve the safety profile of phenytoin in clinical practice and offer the possibility of prospective testing for preventing phenytoin-related SCAR. (more…)
Blood Pressure - Hypertension, JACC, JAMA, Kidney Disease / 05.08.2014

Dr. John J. Sim Division of Nephrology and Hypertension Kaiser Permanente Los Angeles Medical Center, Los Angeles,MedicalResearch.com Interview with: Dr. John J. Sim Division of Nephrology and Hypertension Kaiser Permanente Los Angeles Medical Center, Los Angeles, Medical Research: What are the main findings of the study? Dr. Sim: Among a large diverse population of treated hypertensive people, those who achieved systolic blood pressures (SBP) in the ranges of 130-139mm Hg had the lowest risk for death and end stage renal disease (kidney failure).  Not surprisingly, those with SBP above 139 had incrementally greater risk, but somewhat surprising was that those with SBP under 130 also had a greater risk for death and kidney failure. (more…)
Author Interviews, Gastrointestinal Disease, mBio / 04.08.2014

Dr. Sridhar Mani MD Departments of Genetics and Medicine Albert Einstein College of Medicine, Bronx, NY 10461MedicalResearch.com Interview with: Dr. Sridhar Mani MD Departments of Genetics and Medicine Albert Einstein College of Medicine Bronx, NY 10461

  Medical Research: What are the main findings of the study? Dr. Mani: In a series of studies using cells grown in the lab and mouse studies, the researchers found that a metabolite called indole 3-propionic acid (IPA)—produced exclusively by so-called commensal bacteria —both strengthens the intestinal epithelium’s barrier function and prevents its inflammation by activating an orphan nuclear receptor, Pregnane X Receptor (PXR). Specifically, PXR activation suppresses production of an inflammatory protein called tumor necrosis factor alpha (TNF-á) while increasing levels of a protein that strengthens the junctions between intestinal epithelial cells (makes the intestines less permeable to noxious substances). Loss of PXR protein and/or IPA results in a disrupted intestinal barrier and increased propensity towards intestinal inflammation and/or toxin induced injury to the intestines. (more…)
Annals Internal Medicine, Author Interviews, Heart Disease, Menopause / 03.08.2014

S. Mitchell Harman, M.D., Ph.D. CAPT US Public Health Service, retired Professor, Clinical Medicine, U of AZ College of Medicine Interim Chief, Dept. of Internal Medicine Chair, IRB Subcommitee Phoenix VA Health Care System Phoenix, AZ 85012-1892MedicalResearch.com Interview with: S. Mitchell Harman, M.D., Ph.D. CAPT US Public Health Service, retired Professor, Clinical Medicine, U of AZ College of Medicine Interim Chief, Dept. of Internal Medicine Chair, IRB Subcommitee Phoenix VA Health Care System Phoenix, AZ 85012-1892 Medical Research: What are the main findings of the study? Dr. Harman: The major findings are: 1.       Neither transdermal nor oral estrogen treatment significantly accelerates or decelerates rate of change of carotid artery intimal medial thickness (CIMT) in healthy recently menopausal women. 2.       Both estrogen treatments have some potentially beneficial effects on markers of CVD risk, but these differ depending on the route of estrogen delivery with improvements in LDL and HDL cholesterol seen with oral, and reduced insulin resistance with transdermal. 3.       No significant effects were observed on rate of accumulation of coronary artery calcium. 4.       Women reported significant relief of vasomotor (hot flush) symptoms with both estrogen treatments (more…)
Author Interviews, Diabetes, Mediterranean Diet, Nutrition, PLoS, Sugar / 01.08.2014

Effie Viguiliouk M.Sc. Candidate, Department of Nutritional Sciences University of TorontoMedicalResearch.com Interview with: Effie Viguiliouk M.Sc. Candidate, Department of Nutritional Sciences University of Toronto Medical Research: What are the main findings of the study? Effie Viguiliouk: This systematic review and meta-analysis of the totality of evidence from 12 randomized clinical trials in 450 participants with type 2 diabetes found that eating about 1/2 a cup of tree nuts per day (equivalent to about 60 g or 2 servings) significantly lowered the two key markers of blood sugar, HbA1c and fasting glucose, in comparison to calorically matched control diets without tree nuts. (more…)
Author Interviews, BMJ, Heart Disease, Nutrition / 31.07.2014

Prof. Frank B Hu Department of Nutrition Department of Epidemiology Harvard School of Public HealthMedicalResearch.com Interview Invitation Prof. Frank B Hu Department of Nutrition Department of Epidemiology Harvard School of Public Health Medical Research: What are the main findings of the study? Prof. Hu: We found that increasing consumption of fruits and vegetables is associated with reduced risk of mortality, especially cardiovascular mortality. The largest reduction in mortality can be achieved at 5 servings per day of fruits and vegetables. (more…)
Author Interviews, Genetic Research, JAMA, Schizophrenia / 31.07.2014

Dr Angelica Ronald Genes Environment Lifespan (GEL) laboratory Centre for Brain and Cognitive Development Department of Psychological Sciences Birkbeck, University of London London WC1E 7HXMedicalResearch.com Interview with: Dr Angelica Ronald Genes Environment Lifespan (GEL) laboratory Centre for Brain and Cognitive Development Department of Psychological Sciences Birkbeck, University of London London WC1E 7HX Medical Research: What are the main findings of the study? Dr. Ronald: Psychotic experiences, such as paranoia, hallucinations and disorganised thinking, are commonly reported by adolescents. Until now it has not been understood whether mild variations in psychotic experiences in the community are part of the same construct as more severe psychotic experiences in adolescence. Our findings suggest that they are. In our study, over 10,000 16-year-old adolescents in England and Wales were assessed on measures of psychotic experiences. The study identified a close link between normal, less frequent psychotic experiences and more severe and frequent experiences in the general population. A classic twin design was employed, which enabled us to conduct analyses investigating the role of genetic and environmental influences on psychotic experiences. The same genetic influences appeared to play a role across the spectrum of severity of psychotic experiences. The study found that psychotic experiences are moderately heritable in adolescence in the general population. This suggests it would be worth directing molecular genetic endeavours towards this area, which has so far received very little attention in terms of causal explanations. We also show that psychotic experiences have considerable environmental influence; in fact, environmental influence appears to play a larger role in causing psychotic experiences in adolescence than for diagnosed psychotic disorders in adults, such as schizophrenia. This result suggests a fruitful avenue will be to tackle what environmental risk factors influence adolescents to have psychotic experiences. (more…)
Author Interviews, Genetic Research, JCEM, Weight Research / 31.07.2014

Dr. Agatha van der Klaauw, PhD Wellcome Trust Postdoctoral Clinical Fellow Wellcome Trust-MRC Institute of Metabolic Science University of Cambridge Metabolic Research Laboratories Addenbrooke's Hospital Cambridge, United KingdomMedicalResearch.com Interview with: Dr. Agatha van der Klaauw, PhD Wellcome Trust Postdoctoral Clinical Fellow Wellcome Trust-MRC Institute of Metabolic Science University of Cambridge Metabolic Research Laboratories Addenbrooke's Hospital Cambridge, United Kingdom   Medical Research: What are the main findings of the study? Dr. van der Klaauw: Obesity occurs when we eat more calories than we burn which is often easy to do as many foods are highly palatable and high in calories. Highly palatable foods such as chocolate trigger signals in the brain that give a feeling of pleasure and reward (sometimes called cravings) which can contribute to overeating. These signals are processed in the reward centres in the brain, where sets of neurons release chemicals such as dopamine. However, very little is known about whether the reward centres of the brain work differently in some people who are overweight. In this study, we were interested in studying overweight people who had a problem with the melanocortin 4 receptor (MC4R) gene. About 1% of obese people have a problem in this gene which contributes to weight gain from a young age. We compared three groups of people: people who were overweight due to a problem in the MC4R gene, people who were overweight but the gene was normal and some people who were normal weight. We performed functional Magnetic Resonance Imaging (fMRI) scans to look at how the reward centres in the brain were activated by pictures of appetizing food such as chocolate cake compared to bland food such as rice or broccoli and non-food items such as staplers. We found that in normal weight people, the reward centres are activated (light up) when they are shown pictures of cake or chocolate and the same was seen in overweight people with a problem in the MC4R gene. But we found that the reward centres were underactive in overweight volunteers (in whom the gene was normal). (more…)
Author Interviews, Hematology, NEJM, Sloan Kettering, Transplantation / 31.07.2014

MedicalResearch.com Interview with: Richard J. O'Reilly, MD Memorial Sloan Kettering Cancer Center Medical Research: What are the main findings of the study? Dr. O'Reilly: 1.       In a comparison of the results of HLA-matched sibling transplants with other established transplant approaches, including T-cell depleted half-matched parental marrow grafts, unmodified transplants from matched unrelated donors and cord blood transplants in the current era (2000-2009), transplants from donors other than HLA-matched siblings had 5 year survival outcomes similar to those of matched siblings when applied to young infants (≤ 3.5 months of age) or infants of any age that were not infected at the time of transplants. Thus any child born with SCID can now be successfully transplanted. 2.       Active infection at the time of transplant significantly reduced chances of long-term survival for all infants except those who received transplants from HLA-matched siblings. Thus, infection is a dominant determinant of transplant outcome.  Control of treatable infections prior to transplant should be a major clinical objective. 3.       Treatment with chemotherapy containing busulfan significantly enhances the likelihood of recovering a normal ability to make antibodies and fosters better recovery of T-cells that provide cell mediated immunity, and may be an acceptable risk in uninfected infants. However, use of any chemotherapy prior to transplant in an infant who is infected, greatly decreases chances of survival. In infected patients who lack a matched sibling, T-cell depleted transplants from half matched related donors had the best outcomes. (more…)
Author Interviews, Duke, General Medicine, Mental Health Research, Nature / 31.07.2014

Rainbo Hultman, PhD Postdoctoral Research Associate Laboratory for Psychiatric Neuroengineering, Principal Investigator Affective Cognitive and Addiction Disorders (ACAD) Research Group Department of Psychiatry and Behavioral Sciences Center for Neuroengineering Duke University Medical Center Durham, NC 27710MedicalResearch.com Interview with: Rainbo Hultman, PhD Postdoctoral Research Associate Laboratory for Psychiatric Neuroengineering, Principal Investigator Affective Cognitive and Addiction Disorders (ACAD) Research Group Department of Psychiatry and Behavioral Sciences Center for Neuroengineering Duke University Medical Center Durham, NC 27710 Medical Research: What are the main findings of the study? Dr. Hultman: Using a mouse model of stress-induced psychiatric dysfunction, we found that the brainwave patterns in two key brain regions (prefrontal cortex, PFC and amygdala, AMY) encode for susceptibility to such dysfunction. Furthermore, such susceptibility can be predicted from the brainwave patterns in these regions before the onset of stress. (more…)
Author Interviews, Diabetologia, Weight Research / 31.07.2014

Joshua Bell, MSc Department of Epidemiology & Public Health University College LondonMedicalResearch.com Interview with: Joshua Bell, MSc Department of Epidemiology & Public Health University College London   Medical Research: What are the main findings of the study? Answer: We found that physical activity and leisure time sitting interact to affect the long-term risk of becoming obese, with protective effects of high physical activity depending upon low levels of leisure time sitting. Adults engaging in both high physical activity and low leisure time sitting showed nearly 4-fold lower odds of becoming obese after 5 years, compared with those engaging in both low physical activity and high leisure time sitting. (more…)
Author Interviews, Diabetes, Diabetes Care, Kidney Disease / 30.07.2014

MedicalResearch.com Interview with: Petter Bjornstad, M.D. Children's Hospital Colorado University of Colorado Denver Aurora, CO 80045 Medical Research: What are the main findings of the study? Dr. Bjornstad: Type 2 diabetes is the most common cause of end-stage renal disease in the Western world. It is therefore of paramount importance to develop a better understanding of the determinants of diabetic nephropathy risk and progression, to improve outcome in adolescents with type 2 diabetes. We report high rates of microalbuminuria and renal hyperfiltration in adolescents with type 2 diabetes, which forecast early renal morbidity and mortality. In our observational study, insulin sensitivity measured by hyperinsulinemic-euglycemic clamp studies, rather than adiposity, blood pressure, lipid and glycemic control was associated with markers of renal health (albumin-to-creatinine ratio and estimated glomerular filtration rate). (more…)
Author Interviews, BMJ, Mediterranean Diet, Nutrition / 30.07.2014

Dr Michelle Morris Research Fellow Nutritional Epidemiology Group School of Food Science & Nutrition University of LeedsMedicalResearch.com Interview with: Dr Michelle Morris Research Fellow Nutritional Epidemiology Group School of Food Science & Nutrition University of Leeds Medical Research: What are the main findings of the study? Dr. Morris: The healthiest diets consumed by UK Women are the most expensive. This study is UK centric, using dietary patterns consumed by UK women and scored for healthiness according to the UK Department of Health Eatwell Plate. Cost of diet was estimated using average prices taken from an evaluated UK food cost database. (more…)
Author Interviews, Diabetes, Diabetes Care, Weight Research / 30.07.2014

Grant Brinkworth PhD Associate Professor Senior Research Scientist CSIRO Animal, Food and Health Sciences Adelaide BC, South AustraliaMedicalResearch.com Interview with: Grant Brinkworth PhD Associate Professor Senior Research Scientist CSIRO Animal, Food and Health Sciences Adelaide BC, South Australia Medical Research: What are the main findings of the study? Dr. Brinkworth: Both a very low carbohydrate, high protein, high unsaturated fat diet and a high carbohydrate, low fat diet achieved similar weight loss, improvements in body composition and health risk markers. However, compared to the high carbohydrate, low fat diet, a very low carbohydrate high protein, high unsaturated fat diet had more favourable effects on blood lipid profile, glycemic control (indicated by greater reductions in glycosylated haemoglobin – primary clinical measure of blood glucose control and the requirements for blood glucose controlling drugs) and for reducing daily blood glucose fluctuations. The findings from this study suggests that a novel eating pattern that markedly limits carbohydrates, increases protein and unsaturated fat may have more favourable therapeutic potential for optimising the management of type 2 diabetes and reducing cardiovascular disease risk. (more…)
Addiction, Author Interviews, JAMA, Pediatrics / 29.07.2014

Sharon Levy, M.D., M.P.H. Director, Adolescent Substance Abuse Program Assistant Professor in Pediatrics Boston Children’s HospitaMedicalResearch.com Interview with: Sharon Levy, M.D., M.P.H. Director, Adolescent Substance Abuse Program Assistant Professor in Pediatrics Boston Children’s Hospital   Medical Research: What are the main findings of the study? Dr. Levy: We found that questions that asked about the frequency of alcohol, tobacco and drug use accurately triaged adolescents into "risk categories".  In other words, kids who reported using alcohol or marijuana "once or twice" last year were unlikely to have a substance use disorder, those who reported "monthly" use were very likely to meet diagnostic criteria for a "mild" or "moderate" substance use disorder while those who reported use weekly or more were very likely to meet diagnostic criteria for a "severe" substance use disorder. (more…)
Author Interviews, BMJ, Circadian Rhythm, Diabetes, Occupational Health / 28.07.2014

Professor Zuxun Lu School of Public Health Tongii Medical College Huazhong University of Science and Technology Wuhun, Hubei, China.MedicalResearch.com Interview with: Professor  Zuxun Lu School of Public Health Tongii Medical College Huazhong University of Science and Technology Wuhun, Hubei, China. Medical Research: What are the main findings of the study? Prof. Lu: The main finding of this systematic review and meta-analysis was that shift work is associated with an increased risk of diabetes mellitus (DM). The association between shift work and DM appeared to be independent of physical activity, family of history of DM and body mass index. We found that the increased risk of diabetes mellitus was more pronounced in rotating shift group and male shift workers than in other shift group and female shift workers, respectively. (more…)
Author Interviews, Kidney Disease, Lancet, Transplantation / 28.07.2014

MedicalResearch.com Interview with Dr. Richard Haynes Clinical Trial Service Unit and Epidemiological Studies Unit Roosevelt Drive, Headington Oxford OX3 Medical Research: What are the main findings of the study? Dr. Haynes: The main result from this analysis is that alemtuzumab-based induction therapy (ie, alemtuzumab followed by low-dose mycophenolate and tacrolimus with steroid avoidance) reduced biopsy-proven acute rejection by about half during the first 6 months after transplantation among a wide variety of different types of participant, compared to standard basiliximab-based induction therapy (basiliximab followed by standard dose mycophenolate, tacrolimus and steroids). This reduction was achieved despite the lower doses of tacrolimus used and there was no excess of infection observed. (more…)
AHA Journals, Author Interviews, Heart Disease, Tobacco Research / 28.07.2014

Gabriel Arefalk Department of Medical Sciences Uppsala University Hospital Uppsala, SwedenMedicalResearch.com: Interview with: Gabriel Arefalk Department of Medical Sciences Uppsala University Hospital Uppsala, Sweden Medical Research: What are the main findings of the study? Answer: In this prospective cohort study, we investigated mortality risk in 2474 smokeless tobacco users who had been hospitalized for a myocardial infarction between the years of 2005-2009 in Sweden. We used a nationwide quality register and database called SWEDEHEART and found that those who stopped using snus (the Swedish type of snuff) after their MI had half the risk of dying during follow up relative to those who continued to use snus. This association, which was of the same magnitude as for smoking cessation, seemed to be independent of age, gender and smoking habits, as well as of many other relevant covariates. (more…)
Author Interviews, Heart Disease, JAMA / 27.07.2014

Dr. Danny Dvir MD St Paul’s Hospital, Vancouver British Columbia, CanadaMedicalResearch.com Interview with: Dr. Danny Dvir MD St Paul’s Hospital, Vancouver British Columbia, Canada Medical Research: Who were the patients studied? Dr. Dvir: The VIVID registry included high-risk patients with failed aortic bioprostheses treated with valve-in-valve. These patients had many comorbidities and high risk scores for early mortality with conventional redo surgery. Medical Research: What are the treatment options for these patients? Dr. Dvir: Patients with failed bioprosthetic valves are conventionally treated with redo surgery. Transcatheter valve-in-valve is a less-invasive approach. (more…)
Author Interviews, NEJM, Prostate Cancer / 27.07.2014

Tomasz M. Beer, M.D. FACP OHSU Knight Cancer Institute, Oregon Health and Science University OR 97239MedicalResearch.com Interview with: Tomasz M. Beer, M.D. FACP OHSU Knight Cancer Institute Oregon Health and Science University OR 97239 Medical Research: What are the main findings of the study? Dr. Beer: In the study, we found that compared to placebo, enzalutamide improves overall survival, progression-free survival, quality of life, and delays the need for chemotherapy. Enzalutamide is superior to placebo with respect to all planned endpoints, across all subsets of the patient population in the study.  Enzalutamide treatment is associated with an excellent safety profile. (more…)
Alcohol, Author Interviews, PLoS / 26.07.2014

Michael A. Collins PhD Professor of Molecular Pharmacology Loyola University Chicago Stritch School of Medicine Maywood IL 60153MedicalResearch.com Interview with: Michael A. Collins PhD Professor of Molecular Pharmacology Loyola University Chicago Stritch School of Medicine Maywood IL 60153 Medical Research: What are the main findings of your study? Dr. Collins: There were several:
  • First, we found that a cadre of neuroinflammatory proteins which promote or are stimulated by increased oxidative stress were significantly altered in a brain neurodegeneration model involving high alcohol binges in adult (male) rats. Most surprising was that the alterations were selectively evident in the three brain regions that contain a lot of dying neurons, and not in regions lacking neurodamage.
  • Additionally, in an alcohol-binged adult rat brain cultures, the same neuroinflammatory protein alterations, along with the neuronal damage, were replicated.
  • We further observed that binging the cultures depleted a key omega-3 fatty acid, termed DHA, in brain membranes. When these binged brain cultures were then supplemented with DHA, the neuroinflammatory protein changes and the neurodegeneration were largely or completely inhibited.
  • The results link specific oxidative stress-associated neuroinflammatory routes to the brain neuronal demise arising from high binge alcohol exposures.
  • They also reveal that supplementation with an omega-3 fatty acid reported to be neuroprotective with respect to other insults may be effective as well in suppressing the brain-damaging effects of excessive alcohol binges.
(more…)
Author Interviews, JCEM, Social Issues, Weight Research / 26.07.2014

Qi Zhang, Ph.D. Associate Professor School of Community and Environmental Health Old Dominion University, Norfolk, VA MedicalResearch.com Interview with: Qi Zhang, Ph.D. Associate Professor School of Community and Environmental Health Old Dominion University, Norfolk, VA Medical Research: What are the main findings of the study? Dr. Zhang: This study found the child-parent resemblance in body weight status varied by socio-demographics in the U.S. In short, the resemblance in BMI is weaker in minorities, older children and lower socioeconomic groups. (more…)
Author Interviews, JNCI, Weight Research / 25.07.2014

Sean Davies PhD Department of Pharmacology Vanderbilt UniversityMedicalResearch.com Interview with: Sean Davies PhD Department of Pharmacology Vanderbilt University Medical Research: What are the main findings of the study? Dr. Davies: N-acyl phosphatidylethanolamine (NAPE) is a fat-like molecule normally produced by small intestine of mammals in response to eating high fat foods that helps signal a feeling of fullness to the brain.  This sensation of fullness is what normally helps us decide to stop eating, but in obese people it appears that not enough NAPE is produced so that not enough of that signal gets sent to the brain.  So we wanted to find a way to increase the amount of NAPE made in the intestinal tract, with the hope that this would help protect against obesity. Our approach was to engineer a probiotic bacteria that normally colonizes the gut of humans and other mammals so that it would make NAPE.  Our hope was that when this gut bacteria made the NAPE, it would be absorbed by the intestine and help supplement the NAPE already being made by the intestine so that a more complete sensation of fullness would be send to the brain. What we found was that our engineered bacteria made a significant amount of NAPE and that when fed to mice, the bacteria would colonize the gut like normal and that the intestinal cells could absorb this NAPE.  Most importantly, we found that mice that received this bacteria ate less of the high fat diet than mice that were not treated or that received bacteria that did not make NAPE. Because the mice ate less of the high fat diet, and also because they burned the fat they had more effectively, the mice receiving the bacteria producing NAPE had only 50% of  the body fat of the control mice.  While the control mice showed the early signs of developing diabetes, the mice that received the NAPE producing bacteria showed almost no signs of developing diabetes. So the presence of these NAPE producing bacteria protected the mice from the harmful effects of the high fat diet. Another key findings was that because the bacteria live in the GI tract and keep producing the NAPE for many weeks, we didn’t have to keep administering the bacteria to the mice to keep up the protective effect.  Even a month after we stopped giving the bacteria producing NAPE, the mice were still protected from the effects of the high fat diet.  Eventually after about six weeks, the bacteria died out and the mice started eating the same amount of food as the control mice, but even for at least another six weeks after this, they still weighed less than the control mice. (more…)
Author Interviews, JAMA, Psychological Science, University of Pittsburgh / 25.07.2014

John Blosnich, Ph.D., M.P.H., Post-doctoral fellow at the Center for Health Equity Research and Promotion Veterans Affairs Pittsburgh Healthcare System. MedicalResearch.com Interview with: John Blosnich, Ph.D., M.P.H., Post-doctoral fellow at the Center for Health Equity Research and Promotion Veterans Affairs Pittsburgh Healthcare System. Medical Research: What are the main findings of the study? Dr. Blosnich: I think there are two main findings from our study: First, since the beginning of the All-Volunteer U.S. military in 1973, there has been a shift in childhood experiences among men who have served in the military. Second, the childhood experiences of women who have served in the military have been largely similar across the Draft and All-Volunteer Eras. (more…)
Author Interviews, Gender Differences, Heart Disease, JACC, Transplantation / 25.07.2014

Dr. Eileen Hsich MD Director of the Women’s Heart Failure Clinic Associate Medical Director for the Heart Transplant Program Cleveland Clinic, Cleveland, OhioMedicalResearch.com Interview Invitation  Dr. Eileen Hsich MD Director of the Women’s Heart Failure Clinic Associate Medical Director for the Heart Transplant Program Cleveland Clinic, Cleveland, Ohio Medical Research: What are the main findings of the study? Dr. Hsich: Women are dying on the heart transplant waiting list at a faster rate than men for almost a decade (see Figure 1) and few studies have even addressed this problem. The occurrence is largely driven by gender differences in survival at the most urgent status (UNOS Status 1A) but the cause remains unclear. Although data is limited our findings raise concern that women are not successfully bridged to transplantation while they remain at high status and are inactivated due to worsening condition. Figure 1. Scientific Registry of Transplant Recipients: Mortality on Waiting List For Heart Transplantation Heart waiting list by gender 2000-2009   Figure derived from table in Scientific registry of transplant recipients: Heart waiting list by gender 2000-2009. Available at: Http://srtr.Transplant.Hrsa.Gov/annual_reports/2010/1103_can-gender_hr.Htm accessed january 9, 2014. (more…)