Author Interviews, Heart Disease, JAMA / 26.08.2013

Dr Pamela N Peterson MD Denver Health Medical Center, CO MedicalResearch.com Interview with: Dr Pamela N Peterson MD Denver Health Medical Center, CO   MedicalResearch.com: What are the main findings of the study? Answer: We assessed the outcomes of mortality, rehospitalization, and procedural complications among 24,169 patients in the NCDR-ICD Registry with left ventricular systolic dysfunction receiving a cardiac resynchronization device in addition to an implantable defibrillator for the primary prevention of sudden cardiac death between 2006 and 2009. After stratification by the QRS complex morphology and duration on the ECG and adjustment for measured differences in other characteristics, patients with left bundle branch block (LBBB) and QRS durations of at least 150 msec had significantly lower rates of mortality and rehospitalization at 3 years compared with patients with non-LBBB QRS morphology and/or QRS duration of 120-149 msec. Rates of mortality and readmission were generally highest in patients with non-LBBB and QRS duration of 120-149 msec. Rates of procedural complications at 30- and 90-days were similar across strata of QRS morphology and duration. (more…)
Author Interviews, Diabetes, Exercise - Fitness, JCEM / 24.08.2013

Thomas P. J. Solomon, Ph.D. Associate Professor of Biomedical Sciences Department of Biomedical Sciences | Cellular & Metabolic Research Section Panum Institute 4.5 | University of Copenhagen | Blegdamsvej 3B | 2200 Copenhagen N | DenmarkMedicalResearch.com Interview with: Thomas P. J. Solomon, Ph.D. Associate Professor of Biomedical Sciences Department of Biomedical Sciences | Cellular & Metabolic Research Section Panum Institute 4.5 | University of Copenhagen | Blegdamsvej 3B | 2200 Copenhagen N | Denmark MedicalResearch.com: What are the main findings of the study? Dr. Solomon: The main findings were that when impaired glucose tolerant and type 2 diabetic subjects underwent 3-4 months of regular aerobic exercise training, although the majority of subjects (86-90%) increased increased VO2max, lost weight, and increased insulin sensitivity, only around two-thirds of subjects improved glycemic control (HbA1c, fasting glucose, and 2-hour OGTT glucose). The novel finding was that the changes in glycemic control were congruent with changes in oral glucose-stimulated insulin secretion (GSIS). We also found that exercise training-induced changes in glycemic control were related to changes in GSIS (P0.05), but not insulin sensitivity. Furthermore, we found that training-induced improvements in glycemic control were largest in subjects with greater pre-training GSIS, i.e. in subjects with greatest beta-cell function. And, we noted that high pre-training hyperglycemia blunted exercise-induced improvements in beta-cell compensation for insulin resistance. (more…)
Author Interviews, Breast Cancer, Cancer Research / 23.08.2013

Solveig Hofvind, PhD Cancer Registry of Norway, Oslo and Akershus University College of Applied Sciences, Majorstua 0403, Oslo, NorwayMedicalResearch.com Interview with: Solveig Hofvind, PhD Cancer Registry of Norway, Oslo and Akershus University College of Applied Sciences, Majorstua 0403, Oslo, Norway MedicalResearch.com: What are the main findings of the study? Dr. Hofvind: We find that if 100 women aged 50 years attend the Norwegian Breast Cancer Screening Program as recommended, every two years until they are 69 years, four women will undergo a needle biopsy with benign outcome (a false positive needle biopsy). In the same group of women, twenty women will be recalled for further examination and have additional imaging, ultrasound, and/or a biopsy with negative outcome (a false positive screening result). (more…)
Author Interviews, Bone Density, Breast Cancer, Mineral Metabolism / 23.08.2013

Richard R. Love, MD MS International Breast Cancer Research Foundation Professor of Medicine and Public Health The Ohio State University Columbus, OHMedicalResearch.com: Interview with: Richard R. Love, MD MS International Breast Cancer Research Foundation Professor of Medicine and Public Health The Ohio State University Columbus, OH MedicalResearch.com: What are the main findings of the study? Answer: Surgical oophorectomy and tamoxifen treatment was associated with no loss of bone mineral density (BMD) in the femoral neck, and loss of BMD in the first year, followed by stabilization in the lumbar spine. (more…)
Author Interviews, Dermatology, Genetic Research, Nature / 23.08.2013

MedicalResearch.com Interview with:  Joyce Y Tung Ph.D.MedicalResearch.com Interview with: Joyce Y Tung Ph.D. Research Team 23andMe Inc. Mountain View, California, USA MedicalResearch.com: What are the main findings of the study? Dr. Tung: 23andMe researchers identified four genetic markers that were significantly associated with the development of stretch marks, including one near the elastin (ELN) gene. This finding may further explain why some individuals are more susceptible to the skin condition. Given that loose skin is a symptom of syndromes caused by deletion or loss-of-function mutations in ELN, these results also support the hypothesis that variations in the elastic fiber component of the skin extracellular matrix contribute to the development of stretch marks. (more…)
Author Interviews, Mental Health Research, UCSF / 23.08.2013

MedicalResearch.com Interview with: Vanja Douglas, MD Sara & Evan Williams Foundation Endowed Neurohospitalist Chair Assistant Professor of Clinical Neurology UCSF Department of Neurology Neurology Clerkship Director Editor in Chief, The NeurohospitalistVanja Douglas, MD Sara & Evan Williams Foundation Endowed Neurohospitalist Chair Assistant Professor of Clinical Neurology UCSF Department of Neurology Neurology Clerkship Director Editor in Chief, The Neurohospitalist MedicalResearch.com: What are the main findings of the study? Answer: The study found that a simple 2-minute assessment performed at the time of hospital admission can accurately predict an adult medical inpatient's risk of developing delirium during that hospitalization. (more…)
Author Interviews, Cost of Health Care, Electronic Records, NYU / 23.08.2013

MedicalResearch.com Interview with: Saul Blecker, MD, MHS Assistant Professor Department of Population Health NYU School of Medicine 227 East 30th St., #648 New York, NY 10016Saul Blecker, MD, MHS Assistant Professor Department of Population Health NYU School of Medicine 227 East 30th St., #648 New York, NY 10016 MedicalResearch.com: What are the main findings of the study? Dr. Blecker: We tracked utilization of the inpatient electronic health record (EHR) as a proxy for hospital intensity of care. EHR utilization was found to have variations over time, particularly when comparing days to nights and weekdays to weekends. (more…)
Author Interviews, Mental Health Research, PLoS / 23.08.2013

MedicalResearch.com Interview with: Brian D. Glass Biological and Experimental Psychology, School of Biological and Chemical Sciences, Queen Mary, University of London, London, United Kingdom Bradley C. Love Department of Cognitive, Perceptual and Brain Sciences, University College London, London, United Kingdom MedicalResearch.com: What are the main findings of the study? Answer: We had 72 non-gaming participants play 40 hours of video games over 6 to 8 weeks. We tested them on psychological tests before and after. The participants either played The Sims (a life simulator game), or one of two versions of StarCraft (a real-time strategy game) -- one which had a higher level of complexity. We found that the StarCraft players (especially on the higher complexity version) performed better on specifically the psychological tasks which tested cognitive flexibility. Cognitive flexibility is the ability to adapt to a changing environment by keeping multiple things in mind and switch between tasks effectively. This sort of ability is considered a higher level psychological ability because it requires strategic thinking and creativity. (more…)
AHA Journals, Author Interviews, Cost of Health Care, Diabetes / 23.08.2013

MedicalResearch.com Interview with: Xiaohui Zhuo PhD Health economist Division of Diabetes Translation National Center for Chronic Disease Prevention and Health Promotion Centers for Disease Control and Prevention MedicalResearch.com: What are the main findings of the study? First, someone diagnosed with type 2 diabetes may pay an average of about $85,500 treating the disease over his or her lifetime. Lifetime cost is higher for women, and for patients who developed the disease earlier in life. Second, treating diabetic complications account for more than half of lifetime costs, and a majority of which is attributed by damage to large blood vessels, which can lead to coronary heart disease and stroke. (more…)
Author Interviews, Blood Pressure - Hypertension, JACC, Nature / 23.08.2013

Dr. Axel Bauer, MD, FESC, F-ISHNE Prof. Dr. med. Axel Bauer is head of the coronary care and chest pain unit and primary investigator in the research group of biosignal analysis and sudden death of the cardiology department of the Eberhard-Karls-Universität Tübingen, Germany.MedicalResearch.com Interview with: Dr. Axel Bauer, MD, FESC, F-ISHNE Prof. Dr. med. Axel Bauer is head of the coronary care and chest pain unit and primary investigator in the research group of biosignal analysis and sudden death of the cardiology department of the Eberhard-Karls-Universität Tübingen, Germany. MedicalResearch.com: What are the main findings of the study? Dr. Bauer: Catheter-based renal sympathetic denervation is a promising treatment option in patients with resistant arterial hypertension. However, it is invasive and might have presently unknown adverse side effects in the long-term. Therefore, identification of patients who benefit from RDN and, equally importantly, those who do not is of great importance.  With assessment of baroreflex sensitivity (BRS) we found a way to do that. Patients with resistant hypertension and impaired BRS at baseline benefited the most from RDN in terms of reduction of mean systolic BP on (ABPM) while RDN had no effect in patients with preserved BRS. (more…)
Author Interviews, JAMA, Pediatrics / 23.08.2013

Bjarke Feenstra, Ph.D. Senior Research Scientist Statens Serum Institut Artillerivej 5, 2300 Copenhagen S DenmarkMedicalResearch.com Interview with: Bjarke Feenstra, Ph.D. Senior Research Scientist Statens Serum Institut Artillerivej 5, 2300 Copenhagen S Denmark MedicalResearch.com: What are the main findings of the study? Dr. Feenstra: We discovered a new genome-wide significant locus for infantile hypertrophic pyloric stenosis (IHPS) in a region on chromosome 11 harboring the apolipoprotein (APOA1/C3/A4/A5) gene cluster and also confirmed three previously reported loci. Characteristics of the new locus led us to propose the hypothesis that low levels of circulating lipids in infants are associated with increased risk of IHPS. We addressed this hypothesis by measuring plasma lipid levels in prospectively collected umbilical cord blood from a set of 46 IHPS cases and 189 matched controls. We found that levels were on average somewhat lower in the children who went on to develop the condition. (more…)
Author Interviews, Coffee / 22.08.2013

MedicalResearch.com Interview with: Xuemei Sui, MD, MPH, PhD Assistant Professor Department of Exercise Science Arnold School of Public Health University of South Carolina 921 Assembly Street Room 226 Columbia, SC 29208 MedicalResearch.com: What are the main findings of the study? Answer: Coffee intake was a risk factor with higher mortality in men, but not in women. Men who drank more than 28 cups of coffee weekly had a 21% higher risk of dying when comparing with their non-coffee-consuming peers.  In addition, younger men (age<55 years) who drank more than 28 cups of coffee weekly had a 56% increase in mortality from all-cause and younger women had a greater than 2-fold higher risk of all-cause mortality than those who did not drink coffee. (more…)
Author Interviews, McGill, Sleep Disorders / 22.08.2013

MedicalResearch.com Interview with: Ruifeng Cao, MD,PhD Postdoctoral Fellow Laboratory of Nahum Sonenberg McGill University Department of Biochemistry Montreal, QC H3A 1A3, Canada MedicalResearch.com: What are the main findings of the study? Answer: Circadian (~24h) timing is a fundamental biological process, underlying cellular physiology in animals, plants, fungi, and cyanobacteria.  In mammals, including humans, a circadian clock in the brain drives daily rhythms in sleep and wakefulness, feeding and metabolism, and many other essential processes. We studied how protein synthesis, which is a fundamental process underlying many biological activities, is controlled in the brain clock in mice and identified a protein that functions as a clock repressor. By removing the repressor protein, the clock function is improved. (more…)
Author Interviews, JAMA, Rheumatology / 22.08.2013

MedicalResearch.com Interview with: Matthew Parkes Research Statistician Research in Osteoarthritis Manchester (ROAM) Arthritis Research UK Epidemiology Unit Centre for Musculoskeletal Research Institute of Inflammation and Repair The University of Manchester Manchester Academic Health Science Centre Manchester M13 9PT MedicalResearch.com: What are the main findings of the study? Answer: Looking at all trials of lateral wedge insoles, they seem to reduce pain slightly. However, looking at trials which compare lateral wedges to flat wedges, they don’t appear to differ in terms of pain reduction. (more…)
Author Interviews, Diabetes, JCEM, OBGYNE, Obstructive Sleep Apnea, Sleep Disorders / 22.08.2013

Sirimon Reutrakul MD Section of Endocrinology Department of Medicine Rush University Medical Center Chicago, Illinois 60612MedicalResearch.com: Interview with Sirimon Reutrakul MD Section of Endocrinology Department of Medicine Rush University Medical Center Chicago, Illinois 60612   MedicalResearch.com: What are the main findings of the study? Answer: We found a strong association between obstructive sleep apnea and gestational diabetes mellitus. In pregnant women diagnosed with gestational diabetes, the risk of obstructive sleep apnea is increased nearly 7-fold compared to those without gestational diabetes.  In addition, we found that in non-diabetic women, pregnancy is associated with more disrupted sleep. (more…)
Author Interviews, Blood Pressure - Hypertension, Heart Disease / 20.08.2013

Dr. Anthony Bavry, MD MPH Interventional Cardiology Assistant Professor of Medicine University of Florida 1600 SW Archer Road Gainesville, FL 32610MedicalResearch.com Interview with Dr. Anthony Bavry, MD MPH Interventional Cardiology Assistant Professor of Medicine University of Florida 1600 SW Archer Road Gainesville, FL 32610 MedicalResearch.com: What are the main findings of the study? Dr. Bavry: Among individuals with chronic stable coronary artery disease, it is possible to define a group who are at relatively low risk for adverse cardiovascular events. MedicalResearch.com:Were any of the findings unexpected? (more…)
Author Interviews, Stem Cells / 20.08.2013

Medical Research.com Interview with: Katrin Streckfuss-Boemeke, PhD Department of Cardiology and Pneumology Heart Research Center Göttingen (HRCG) University Medical Center Göttingen Georg-August-University Göttingen 37075 Göttingen Germany Medical ResearcH.com: What are the main findings of the study? Answer: The main finding is that human induced pluripotent stem cells (hiPSCs) can be generated from different somatic cell sources including bone marrow mesenchymal stem cells (MSCs), hair keratinocytes, and skin fibroblasts, but MSCs and fibroblasts are more easily reprogrammed than keratinocytes. All generated hiPSCs can differentiate into cardiomyocytes with an efficiency ranging from 3 to 42%. However, the highest cardiac differentiation efficiency was achieved from MSC-derived hiPSCs. Although the cardiac differentiation efficiency varied among different cell lines, there is no significant difference in the functionalities of cardiomyocytes derived from different hiPSC lines. (more…)
Author Interviews, Diabetes / 20.08.2013

Leonardo Trasande, MD, MPP  Departments of Pediatrics, Environmental Medicine,  Population Health, and  Medicine, School of Medicine, and  Wagner School of Public Service, and  Steinhardt School of Culture, Education, and Human Development, Department of Nutrition MedicalResearch.com: Interview with Leonardo Trasande, MD, MPP Departments of Pediatrics, Environmental Medicine,  Population Health, and  Medicine, School of Medicine, and  Wagner School of Public Service, and  Steinhardt School of Culture, Education, and Human Development, Department of Nutrition MedicalResearch.com: What are the main findings of the study? Answer: We detect associations of urinary phthalate metabolites in a cross-sectional study of US adolescents.  The association is highly robust to multiple sensitivity analyses, and specific to phthalates commonly found in food.  Further, longitudinal study of dietary phthalate exposures is needed. (more…)
Author Interviews, Autism, General Medicine, JAMA / 20.08.2013

MedicalResearch.com:  Interview with: Therese Koops Grønborg PhD student/ph.d.-studerende, MSc Section of Biostatistics/Sektion for Biostatistisk Department of Public Health/Institut for Folkesundhed Aarhus University Bartholins Allé 2, DK-8000 Aarhus C, Denmark MedicalResearch.com: What are the main findings of the study? Answer: There are three important findings in our study. We estimated a population-based Autism Spectrum Disorder (ASD) sibling recurrence risk relative to the background population and found an almost seven-fold increase. While this indeed is an increased risk, it is also lower than what other recent studies have suggested. We also compared the relative recurrence risk for full and maternal/paternal half siblings and found a lower relative recurrence risk in half siblings than in full siblings, which supports the genetic pathway to ASD. The recurrence risk for maternal half siblings is still higher than for the background population suggesting that factors unique to the mother, such as the intrauterine environment and perinatal history, may contribute to ASD. Last, but not least, we estimated the time trends in the relative recurrence risk. While the ASD prevalence has been increasing for several years, we found no time trends in the relative recurrence risk, suggesting that the factors contributing to the risk for ASDs recurrence in siblings (perhaps a combination of genes and environment) have not changed over time. (more…)
Author Interviews, Blood Pressure - Hypertension, Kidney Disease, Nature / 20.08.2013

MedicalResearch.com Interview with: Hemodialysis.com Author Interview: Csaba P. Kovesdy MD FASN. Csaba P. Kovesdy MD FASN.The Fred Hatch Professor of Medicine Director, Clinical Outcomes and Clinical Trials Program in Nephrology University of Tennessee Health Science Center Chief of Nephrology Division of Nephrology, Memphis VA Medical CenterDr.Csaba P. Kovesdy MD FASN. The Fred Hatch Professor of Medicine Director, Clinical Outcomes and Clinical Trials Program in Nephrology University of Tennessee Health Science Center Chief of Nephrology Division of Nephrology, Memphis VA Medical Center MedicalResearch.com: What are the main findings of the study? Dr. Kovesdy: In this study of >650,000 US veterans with CKD we found that categories of lower SBP/DBP combinations are associated with lower mortality only as long as the DBP component remains above a threshold of approximately 70 mmHg, and that patients with BP values in the range of 130-159/70-89 mmHg had the lowest mortality.  Patients who might be considered to have “ideal” blood pressure (<130/80) actually had increased mortality due to the inclusion of individuals with low systolic and diastolic blood pressures. (more…)
Author Interviews, JAMA, Outcomes & Safety, Yale / 20.08.2013

Leora I. Horwitz, MD, MHS Section of General Internal Medicine, Department of Medicine, Yale School of Medicine, Center for Outcomes Research and Evaluation, Yale–New Haven Hospital, New Haven, ConnecticutMedicalResearch.com Interview with: Leora I. Horwitz, MD, MHS Section of General Internal Medicine, Department of Medicine, Yale School of Medicine, Center for Outcomes Research and Evaluation, Yale–New Haven Hospital, New Haven, Connecticut MedicalResearch.com: What are the main findings of the study? Answer: We interviewed nearly 400 older patients who had been admitted with heart failure, pneumonia or heart attack within one week of going home from the hospital. We also reviewed the medical records of 377 of the patients. We found, for example, that:
  • 40% of patients could not understand or explain the reason they were in the hospital in the first place;
  • A fourth of discharge instructions were written in medical jargon that a patient was not likely to understand;
  • Only a third of patients were discharged with scheduled follow-up with a primary care physician or cardiology specialist;
  • Only 44% accurately recalled details of their appointments.
In other words, we didn't do a very good job of preparing patients for discharge, and perhaps as a result, patients were pretty confused about important things they needed to know after they were home. We just published a companion paper in the Journal of Hospital Medicine last week in which we looked at the discharge summaries for the same patients - that is, the summary of the hospitalization that is meant to help the outpatient doctor understand what happened in the hospital. Turns out we were just as bad at communicating with doctors as with patients - we focused on details of the hospitalization rather than what needed to happen next or what needed to be followed up, and in a third of cases, we didn't even send the summary to the outpatient doctor. In fact out of 377 discharge summaries, we didn't find a single one that was done on the day of discharge, sent to the outpatient doctor, and included all key content recommended by major specialty societies. (more…)
Author Interviews, Lung Cancer, University of Pennsylvania / 20.08.2013

Sandra Ryeom, PhD, Assistant professor of Cancer Biology, Perelman School of Medicine, University of Pennsylvania MedicalResearch.com Interview with: Sandra Ryeom, PhD, Assistant professor of Cancer Biology, Perelman School of Medicine, University of Pennsylvania MedicalResearch.com: What are the main findings of the study? Answer: We identified an important pathway (calcineurin-NFAT-Angiopoeitin2) in the vasculature of early metastatic lung lesions that is critical for promoting lung metastases. MedicalResearch.com: Were any of the findings unexpected? Answer: Since there is limited understanding of regulation of tumor angiogenesis at metastatic sites, identification of the calcineurin pathway and a newly identified target of calcineurin-NFAT signaling  was all unexpected. (more…)
Author Interviews, Cost of Health Care, Heart Disease, Outcomes & Safety / 20.08.2013

Dr. Finlay McAlister Division of General Internal Medicine Patient Health Outcomes Research and Clinical Effectiveness Unit University of Ottawa, Ottawa Hospital Research Institute, Ottawa, Ont.MedicalResearch.com Interview with: Dr. Finlay McAlister Division of General Internal Medicine Patient Health Outcomes Research and Clinical Effectiveness Unit University of Ottawa, Ottawa Hospital Research Institute, Ottawa, Ont. MedicalResearch.com: What are the main findings of the study? Answer: Heart Failure carries a high risk of readmission/death in the first 30 days after hospital discharge (approximately 20%) - even in this cohort of patients with first time diagnosis of heart failure who were discharged home to the community.  Patients who do not have an outpatient physician follow-up visit in the first 30 days after discharge have poorer outcomes at 30 days, 3 months, 6 months, and 12 months.  Although outcomes are similar for patients who see an unfamiliar or a familiar physician in that first 30 days, over the longer term follow-up with a familiar physician is associated with better outcomes than follow-up with unfamiliar physician(s). (more…)
Author Interviews, Gastrointestinal Disease, Heart Disease / 20.08.2013

MedicalResearch.com Interview with: John P. Cooke MD PhD Chair, Department of Cardiovascular Sciences Director, Center for Cardiovascular Regeneration Houston Methodist Research Institute 6670 Bertner St MS:  R6-414, Houston, TX 77030John P. Cooke MD PhD Chair, Department of Cardiovascular Sciences Director, Center for Cardiovascular Regeneration Houston Methodist Research Institute 6670 Bertner St MS:  R6-414, Houston, TX 77030   MedicalResearch.com: What are the main findings of the study? Answer: We discovered that the proton pump inhibitors PPIs), as a class, impair vascular relaxation.  The PPIs have this effect by suppressing the activity of a key enzyme required for cardiovascular health. The enzyme is known as DDAH (for dimethylarginine dimethylaminohydrolase).  This enzyme is critical in clearing ADMA (asymmetric dimethylarginine) from tissues and the circulation.  Because ADMA is an endogenous inhibitor of nitric oxide synthase, accumulation of ADMA impairs vascular relaxation and vascular homeostasis.   Previously, we and others have found that, by inhibiting endothelium-derived nitric oxide, ADMA accelerates vascular disease in preclinical models.  In humans, ADMA is linked to the severity of vascular disease, and is an independent risk factor for major adverse cardiovascular events (MACE).  Thus, the effect of PPIs to inhibit DDAH would be anticipated to impair cardiovascular health, and to increase the risk of MACE. (more…)
Author Interviews, Breast Cancer, Genetic Research / 20.08.2013

Steven A. Narod, MD Women’s College Research Institute 790 Bay St, 7th Floor Toronto, ON, M5G 1N8 CanadaMedicalResearch.com Author Interview: Steven A. Narod, MD Women’s College Research Institute 790 Bay St, 7th Floor Toronto, ON, M5G 1N8 Canada MedicalResearch.com: What are the main findings of the study? Answer: We found that the survival of women with breast cancer and a brca1 mutation was similar to that of women with breast cancer and no mutation. (more…)
Author Interviews, Heart Disease / 18.08.2013

MedicalResearch.com: Orly Vardeny, PharmD, MS Associate Professor of Pharmacy and Medicine University of Wisconsin-Madison MedicalResearch.com What are the main findings of the study? Answer: We performed a post-hoc analysis of the RALES study to assess rates of hyperkalemia and hypokalemia among African American (AA) and non-AA study participants, and examined clinical outcomes by race. We found that AA had less overall increases in potassium compared to non-AA, and exhibited less hyperkalemia with spironolactone. AA subjects were also found to have higher rates of hypokalemia, even among those randomized to spironolactone. Moreover, AA participants appeared to derive less clinical benefit from spironolactone. While non-AA demonstrated reduced risk for death and the combined endpoint of death or heart failure hospitalizations when randomized to spironolactone, African Americans did not derive benefit, and the risk of these outcomes were not different between spironolactone and placebo among AA. (more…)
Author Interviews, JAMA, Weight Research / 17.08.2013

  MedicalResearch.com Interview with: Michiyo Yamakawa MHSc Department of Epidemiology Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan MedicalResearch.com: What are the main findings of the study? Answer: We found that breastfeeding was associated with decreased risk of  overweight and obesity at the age of 7 and 8 years compared with formula feeding. Moreover, the protective associations for obesity were greater than those for overweight. (more…)
Alzheimer's - Dementia, Author Interviews, Genetic Research, Mental Health Research / 16.08.2013

MedicalResearch.com Interview with: Dr. Ramon Trullas Research Professor CSIC Institute of Biomedical Research of Barcelona MedicalResearch.com: What are the main findings of the study? Answer: The findings reported in this manuscript that we consider can be underscored are: 1) Asymptomatic subjects at risk of developing sporadic Alzheimer’s disease (AD), as well as symptomatic patients diagnosed with probable sporadic AD show a low concentration of circulating cell free mitochondrial DNA (mtDNA) in cerebrospinal fluid (CSF). 2) Pre-symptomatic subjects carrying pathogenic PSEN1 gene mutations which cause early onset familial AD, also exhibit low mtDNA content in CSF. 3) Reduced mtDNA content in CSF occurs in preclinical PSEN1 mutation carriers at least one decade before patients are expected to manifest clinical signs of dementia and well before any alteration in currently known AD biomarkers. 4)  Low mtDNA content in CSF distinguishes patients diagnosed with AD from either controls or patients with fronto-temporal lobar degeneration. These findings indicate that the amount of circulating cell-free mtDNA content in CSF may be a novel biomarker for the early detection of AD in the preclinical stage of AD. Moreover, the observation that low mtDNA content in the CSF is associated with both sporadic and familial forms of AD suggests that, independently of the etiology, regulation of mtDNA content is a converging factor in the pathophysiology of AD. (more…)
Alzheimer's - Dementia, Author Interviews, Genetic Research, Nature / 16.08.2013

MedicalResearch.com Interview with: Steve Estus PhD Dept. of Physiology University of Kentucky Office: Room 332 Sanders-Brown Building 800 S. Limestone Street Lexington, KY 40536-0230 MedicalResearch.com: What are the main findings of the study? Answer: We report evidence for the function of a Alzheimer's genetic  risk factor.  This protective allele of the polymorphism decreases the splicing efficiency of exon 2 in CD33, a receptor protein that regulates microglial activation.  Loss of exon 2 appears to produce a dormant CD33 protein, resulting in increased microglial phagocytosis activity.  Overall, these findings confirm and extend recent papers in Neuron and Nature Neuroscience  (discussed further in our report) that described decreased CD33 activity with the protective SNP allele. (more…)