Author Interviews, Calcium, Mineral Metabolism / 09.04.2013

 MedicalResearch.com eInterview with Maoquing Wang Department of Nutrition and Food Hygiene, School of Public Health, Harbin MedicalUniversity, 157 Baojian Road, Nangang District, Harbin, 150081, P. R. China MedicalResearch.com: What are the main findings of the study? Dr. Wang: Our group first reported that the 2-week low-calcium diet could result in metabolic changes and 27 reliable biomarkers of calcium deficiency were identified. The correlations between calcium intake and two of the biomarkers indicated that these biomarkers could be used alone or in combination as a non-invasive screening method with greater sensitivity and specificity for the diagnosis of calcium deficiency in humans in future. The identified biomarkers give new insights into the pathophysiological changes and molecular mechanisms of calcium deficiency.
Author Interviews, Brigham & Women's - Harvard, Diabetes, JAMA, Medical Research Centers, Melatonin, Sleep Disorders / 04.04.2013

Dr. Ciaran McMullan MD from Channing Division of Network Medicine in Boston, a research division within the Department of Medicine at Brigham and Women’s Hospital, Boston MassMedicalResearch.com Interview with Dr. Ciaran McMullan MD from Channing Division of Network Medicine in Boston, a research division within the Department of Medicine at Brigham and Women’s Hospital, Boston Mass MedicalResearch.com: What are the main findings of the study? Dr. McMullan: In this observational study performed in non-diabetic women we found that lower nocturnal melatonin secretion predicted future risk of developing type 2 diabetes. When we categorized the individuals by category of nocturnal melatonin secretion we found that those in the lowest category had twice the risk as those in the highest category of nocturnal melatonin secretion. This association remained even after adjusting for other well established risk factors for development of diabetes including body mass index, physical activity, dietary factors, family history of diabetes, smoking and hypertension. This increased risk translates into the lower melatonin secretion group having an additional 5 cases of incident diabetes per 1000 person years than the high melatonin secretion group.
Author Interviews, Diabetes, UT Southwestern, Weight Research / 03.04.2013

MedicalResearch.com Author Interview: Ildiko Lingvay, MD, MPH, MSCS Departments of Internal Medicine–Endocrinology and Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, Texas MedicalResearch.com: What are the main findings of the study? Dr. Lingvay: We found that the restrictive diet imposed after a bariatric procedure like RYGB is the key element to the rapid improvement in the diabetes seen immediately after surgery.
Author Interviews, Breast Cancer, Genetic Research, PNAS / 03.04.2013

MedicalResearch.com eInterview with Dr. Mathieu Lupien PhD Dr. Mathieu Lupien PhD Princess Margaret Cancer Centre, University Health Network Ontario Cancer Institute (OCI) Assistant Professor Department of Medical Biophysics University of Toronto Princess Margaret Cancer Centre, University Health Network Ontario Cancer Institute (OCI) Assistant Professor Department of Medical Biophysics University of Toronto MedicalResearch.com: What are the main findings of the study? Dr. Lupien: Approximately 50% of breast cancer patients fail to respond to the standard of care based on endocrine (hormonal) therapy. Our research identifies a mechanism that accounts for this resistance. Drugs against this mechanism are already tested for other diseases. Hence, our discovery should rapidly help reposition these drugs against endocrine therapy resistant breast cancer.
Author Interviews, Memory, Mental Health Research, PNAS / 02.04.2013

Karl K. Szpunar PhD Department of Psychology, Harvard University, Cambridge, MA 02138MedicalResearch.com Interview with Karl K. Szpunar PhD Department of Psychology, Harvard University, Cambridge, MA 02138 MedicalResearch.com:   What are the main findings of the study? Dr. Szpunar: The results of our experiments demonstrate that students can have difficulty paying attention to online lectures, and that including brief quizzes during lectures can help to alleviate this problem. Specifically, we found that students who were tested throughout a 21-minute long Statistics lecture were half as likely to mind wander during the lecture, three times as likely to take additional notes, and much better able to retain the contents of the lecture at a later time.
Author Interviews, Cancer Research, PNAS / 02.04.2013

MedicalResearch.com Author Interview: Prof. Eytan Domany Department of Physics of Complex Systems and Department of Biological Regulation, Weizmann Institute of Science, Rehovot, 76100, IsraelDepartment of Physics of Complex Systems and Department of Biological Regulation, Weizmann Institute of Science, Rehovot, 76100, Israel MedicalResearch.com: What are the main findings of the study? Prof. Domany: The findings are two-fold: methodological and clinical.  A novel method was introduced for personalized analysis of cancer, and was applied on large colon cancer and glioblastoma datasets. The method uses high throughput (gene expression) data to infer a pathway deregulation score (PDS) for individual tumors, for hundreds of pathways and biological processes. The method is knowledge-based in that it uses well known information about the assignment of genes to biologically relevant pathways. No detailed knowledge of the underlying networks of interactions and activations is necessary. Each tumor is represented by a few hundred of these PDSs, and further analysis uses this representation.
Author Interviews, Cancer Research, Smoking, University of Pennsylvania / 01.04.2013

MedicalResearch.com Author Interview: Dr. Steven A. Branstetter, PhD The Pennsylvania State University, 315 E. HHD, University Park, PA 16810.Dr. Steven A. Branstetter, PhD The Pennsylvania State University, 315 E. HHD, University Park, PA 16810. MedicalResearch.com: What are the main findings of the study? Dr. Branstetter: This study demonstrated that the time to the first cigarette of the day after waking is associated with increased levels of a NNAL, a metabolite of a powerful tobacco-specific carcinogen, NNK -- even after controlling for the total number of cigarettes smoked per day. For years, the time to the first cigarette of the day after waking was one of several questions assessing nicotine dependence on the Fagerstrom Test for Nicotine Dependence (FTND), the gold standard questionnaire int he field. Over time, it was found that much of the predictive validity of the FTND was due to the time to first cigarette item. Researchers have found that single time to first cigarette item was highly correlated with other measures of nicotine dependence, and was predictive of more difficulty quitting smoking and increased intake of nicotine. Our current study demonstrates that this behavioral measure, is predictive of exposure to the cancer-causing components of cigarettes, regardless of the total number of cigarettes smoked per day. The results suggest that researchers, clinicians and smokers can assess the level of nicotine dependence and potential cancer risk by looking at the time to the first cigarette of the day after waking.
Author Interviews, Sleep Disorders / 30.03.2013

 MedicalResearch.com Interview with Matt T. Bianchi MD PhD MMSc Assistant Professor Department of Neurology Director, Sleep Division Massachusetts General HospitalMatt T. Bianchi MD PhD MMSc Assistant Professor Department of Neurology Director, Sleep Division Massachusetts General Hospital MedicalResearch.com: What are the main findings of the study? Dr. Bianchi: We showed that patients reporting symptoms of insomnia tend to under-estimate the amount of time they slept during overnight sleep testing in our clinical sleep laboratory.
Author Interviews, Breast Cancer, Cancer Research, Depression, Mental Health Research / 28.03.2013

MedicalResearch.com Interview with Mylin A. Torres, M.D. Assistant Professor Department of Radiation Oncology Emory University School of Medicine Atlanta, GA 30322 MedicalResearch.com: What are the main findings of the study?  Dr. Torres: Radiation treatment for breast cancer is not associated with increased depressive symptoms, but of disease and treatment-related factors, prior chemotherapy treatment is a significant predictor of depression before and after radiation treatment.  Prior chemotherapy treatment was associated with inflammatory mediators, including nuclear factor-kappa B DNA binding, soluble tumor necrosis factor-alpha receptor 2, and interleukin-6, which predicted for depressive symptoms after radiation on univariate analysis.
Author Interviews, Menopause, Weight Research / 28.03.2013

MedicalResearch.com Interview with Dr. Sylvia Santosa, PhD Department of Exercise Science Concordia University Department of Exercise Science Montreal, Quebec, Canada H4B 1R6Dr. Sylvia Santosa, PhD Department of Exercise Science Concordia University Department of Exercise Science Montreal, Quebec, Canada H4B 1R6 MedicalResearch.com: What are the main findings of the study? Dr. Santosa: Our results show that postmenopausal women burn less fat making more available to be stored.  Our results also suggest that greater fat storage in postmenopausal women are likely to be attributed to changes in the pathways our fat cells use to store fat.  We found that some of the proteins that help our fat cells store fat were more active and this greater activity corresponded with the amount of fat stored from our circulation.
Author Interviews, Prostate Cancer, University of Pennsylvania / 28.03.2013

MEDICALRESEARCH.COM INTERVIEW WITH Charnita Zeigler-Johnson, Ph.D., M.P.H. Research Assistant Professor CCEB University of Pennsylvania MEDICALRESEARCH.COM: What are the main findings of the study? Dr. Zeigler-Johnson: The main findings of the study are:
  • Younger African-American men diagnosed with advanced prostate cancer at an early age (under the age of 60) are more likely to have had a personal history of early-onset baldness (baldness by age 30.)
  • For older patients, this is not necessarily the case, and future studies will need to focus on which factors place men in this age group at risk for prostate cancer.
Author Interviews, Sleep Disorders / 27.03.2013

 MedicalResearch.com Interview with: Christer Hublin Apulaisylilääkäri, neurologian dosentti (Helsingin yliopisto) - Assistant Chief Medical Officer, Docent (Adjunct Professor) in Neurology (Helsinki University) Unilääketieteen erityispätevyys (Suomen lääkäriliitto) Sleep medicine specialist (NOSMAC/ESRS) Työterveyslaitos - Finnish Institute of Occupational Health FIN-00250 Helsinki Finland MedicalResearch.com What are the main findings of the study? Answer: We found in an adult twin cohort (the Finnish Twin Cohort) that the proportion of variance in sleep length accounted for by genetic effects was relatively low (about one third) but stable (correlation 0.76 over a period of 15 years.). In contrast, the proportion of variance accounted for by environmental effects was high (about 0.7) and these effects were less stable (correlation over the time period 0.18). The proportion of short sleepers was more than doubled in both genders, whereas in the proportion of long sleepers no major change was seen during the follow-up. To our knowledge, this is the first longitudinal study providing data on the contribution of genetic factors to stability and change of sleep length over time.
Author Interviews, Sleep Disorders / 26.03.2013

MedicalResearch.com Interview with Dr. Christopher Papandreou Department of Social Medicine, Preventive Medicine and Nutrition Clinic, Medical School, University of Crete, Heraklion, Greece. MedicalResearch.com: What are the main findings of the study? Dr. Papandreou: Certain adipose tissue fatty acids measured in the gluteal site were found to be associated with sleep quality parameters in obese patients with obstructive sleep apnoea syndrome after controlling for possible confounders.
Author Interviews, Duke, Genetic Research, Leukemia, MD Anderson, UT Southwestern / 23.03.2013

MedicalResearch.com Author Interview: Jun J. Yang, Ph.D. Assistant Member Dept. of Pharm. Sci. St. Jude Children's Research Hospital 262 Danny Thomas Pl., MS313 Memphis, TN 38105 MedicalResearch.com: What are the main findings of the study? Dr. Yang: We performed a comprehensive survey of inherited genetic variations for their contribution to the susceptibility of acute lymphoblastic leukemia (ALL), the most common cancer in children. This is by far the largest study of its kind (in terms of the number of subjects involved), and also the first one to include multi-ethnic populations. We identified 4 genomic loci related to the predisposition to ALL, 2 of which contributed to racial differences in the incidence of ALL.  This study provided unequivocal evidence for inherited susceptibility of childhood ALL and pointed to novel biology of the pathogenesis of this disease.
Author Interviews, Metabolic Syndrome, Stem Cells, Transplantation / 20.03.2013

MedicalResearch.com Interview with Dr. Boelens Pediatric Blood and Marrow Transplantation Program, University Medical Center Utrecht, Utrecht, Netherlands MedicalResearch.com: What are the main findings of the study? Dr. Boelens: For children with Hurler’s syndrome, the receipt of a hematopoietic cell transplant (HCT) early in life with the best available human leukocyte antigen (HLA)-matched donor offers the best event free survival (EFS). Also, HCT with a well matched unrelated cord blood unit is particularly attractive as the unit is readily available.
Author Interviews, Biomarkers, Cancer Research / 20.03.2013

MedicalResearch.com Interview with :Stig E. Bojesen Staff specialist, MD, PhD, DMSci Dept. of Clinical Biochemistry, Copenhagen University Hospital Herlev Hospital DK-2730 Herlev DenmarMedicalResearch.com Interview with Stig E. Bojesen Staff specialist, MD, PhD, DMSci Dept. of Clinical Biochemistry, Copenhagen University Hospital Herlev Hospital  DK-2730 Herlev  Denmark MedicalResearch.com: What are the main findings of the study?

Dr. Bojesen: The most interesting findings were the increased risk of early death after cancer by decreasing telomere length – measured even before the cancer disease surfaced in the individual. This association was present even after adjusting for all known markers of adverse prognosis. We did not expect this, but it has important implications for how we might apply this marker in the management of cancer patients. The second - and also important and unexpected finding - was the overall lack of association with risk of cancer, after adjustment for the most common ordinary risk factors like age, gender, smoking and so on. This was in contrast to former meta-analyses and many other smaller studies suggesting increased cancer risk with decreasing telomere length. We could reject this hypothesis with considerable statistical power.
Author Interviews, Exercise - Fitness, JAMA, Stroke / 19.03.2013

MedicalResearch.com Interview with Carron D. Gordon, PhD Section of Physical Therapy, University of the West Indies, Mona, Box 126, Kingston 7, Jamaica, West Indies MedicalResearch.com:  What are the main findings of the study? Dr. Gordon: The walking group showed a 17.6% improvement in distance walked in six minutes (measure of endurance) compared to 4% in the control group and 16.7% improvement in SF36-Physical Component (health-related quality of life) compared to 2.6% in the control group.
Author Interviews, Nutrition / 18.03.2013

MedicalResearch.com Interview with: Yoshihiro Kokubo, MD, PhD, FACC, FAHA, FESC Department of Preventive Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka, MedicalResearch.com: What are the main findings of the study? Dr. Kokubo:  In this study, higher green tea (2 or more cups/day) and coffee (3 to 6 times/week, 1 or more cups/day) consumption were found to be inversely associated with the incidences of cardiovascular disease and stroke. Higher green tea (2 or more cups/day) or coffee (1 or more cups/day) consumption reduced the risks of cardiovascular disease, strokes, and its subtypes, especially in intracerebral hemorrhage (P for interaction between green tea and coffee=0.04).
Author Interviews, Nutrition, OBGYNE, Pediatrics / 17.03.2013

MedicalResearch.com Interview with : Verena Sengpiel, researcher Institute of Clinical Sciences, Sahlgrenska Academy University of Gothenburg MedicalResearch.com: What are the main findings of the study? Response: 1. Coffee, but not caffeine, consumption was associated with marginally increased gestational length but not with the risk of spontaneous preterm delivery. 2. Caffeine intake was consistently associated with decreased birth weight and increased odds of SGA (small for gestational age). This might have clinical implications as even caffeine consumption below the recommended maximum (200 mg/d in the Nordic countries and USA, 300 mg/d according to WHO) was associated with increased risk for SGA.
Allergies, Author Interviews / 15.03.2013

MedicalResearch.com Matthieu Picard, MD, FRCPC Hôpital Maisonneuve-Rosemont Université de Montréal Montréal, Qc, Canada MedicalResearch.com: What are the main findings of the study? Dr. Picard: We found that patients reporting a history of penicillin allergy were often treated with penicillins despite their history of allergic reaction to that drug. In this study, which took place in a large tertiary-care academic hospital without allergists on staff, more than half of patients with a presumed penicillin allergy and a need for antibiotics were treated with beta-lactams, a class of antibiotics that includes penicillins and drugs that can cause allergic reactions in penicillin allergic individuals because of cross-reactivity.
Author Interviews, Cancer Research, Cost of Health Care, JNCI / 15.03.2013

Gabriel Brooks MD Fellow, Medical Oncology Dana-Farber Cancer InstituteMedicalResearch.com Interview with Gabriel Brooks MD Fellow, Medical Oncology Dana-Farber Cancer Institute MedicalResearch.com: What are the main findings of the study? Dr. Brooks: First, we found that there is substantial regional variation in Medicare spending for patients with advanced cancer.  For patients with a new diagnosis of advanced stage cancer, spending in the six months following diagnosis varied by 32% between regions in the highest and lowest quintiles of spending.  And for patients who died from cancer, spending in the last six months of life varied by 41% between the highest and lowest spending regions. Second, we tested the association between area-level spending and survival from the time of advanced cancer diagnosis.  We found that there was no consistent association between increasing spending and survival for any of the five cancer sites included in our study (non-small cell lung cancer, colorectal cancer, pancreas cancer, breast cancer and prostate cancer).
Author Interviews, Infections, PLoS / 11.03.2013

MedicalResearch.com Author Interview: Dr. Donald K. Milton, MD, Dr.P.H dr_donalk_k_miltonDr. Donald K. Milton, MD, Dr.P.H Professor and Director Maryland Institute for Applied Environmental Health University of Maryland MedicalResearch.com: What are the main findings of the study? Dr. Milton: We found that total viral copies detected by molecular methods were 8.8 times more numerous in fine (≤5 µm) than in coarse (>5 µm) aerosol particles and that the fine particles from cases with the highest total number of viral RNA copies contained infectious virus. Surgical masks reduced the overall number of RNA copies by 3.4 fold.
Author Interviews, Cancer Research, JNCI, Lung Cancer, NEJM / 08.03.2013

Dr. Martin C. Tammemägi Professor (Epidemiology) Brock University Department of Community Health Sciences Walker Complex – Academic South, Room 306 St. Catharines, Ontario, Canada L2S 3A1Medical Research.com Author Interview: Dr. Martin C. Tammemägi Professor (Epidemiology) Brock University Department of Community Health Sciences St. Catharines, Ontario, Canada L2S 3A1 Medical Research.com What are the main findings of the study?  Dr. Tammemägi: Our study accomplished three things: 1. We presented an updated Lung Cancer Risk Prediction Model, which compared to our previously JNCI-published model, incorporates more predictors but is simpler to use because we changed the way we modeled nonlinear effects. 2. We demonstrated that using the Lung Cancer Risk Prediction Model to select individuals for lung cancer screening was much more effective than using the National Lung Screening Trial (NLST) enrolment criteria.  41.3% fewer lung cancers were missed.  Sensitivity and positive predictive value of identifying individuals who develop lung cancer were significantly improved.  Shortly after our NEJM paper was published, Ma et al published in CANCER their findings that 8.6 million Americans are NLST-criteria positive and if they were CT screened under ideal conditions 12,000 lung cancer deaths would be averted.  Our NEJM article findings indicate that an additional 2,764 lives would be saved if the selection criteria had enrolled 8.6 million individuals for screening based on highest risk by our Lung Cancer Risk Prediction Model. 3. Importantly, using NLST data we demonstrated that the beneficial effect of CT screening did not vary by model predicted lung cancer risk.
Author Interviews, Clots - Coagulation, NEJM / 08.03.2013

Author Interview: Sam Schulman M.D., FRCPC(C) Professor, Division of Hematology and Thromboembolism, Department of Medicine Associate Professor, Medicine, Karolinska Institute, Stockholm, Sweden Director, Clinical Thromboembolism Program Hamilton Health Sciences, Hamilton General Hospital, Hamilton, OntarioMedicalResearch.com  Author Interview: Sam Schulman M.D., FRCPC(C) Professor, Division of Hematology and Thromboembolism, Department of Medicine Associate Professor, Medicine, Karolinska Institute, Stockholm, Sweden Director, Clinical Thromboembolism Program Hamilton Health Sciences, Hamilton General Hospital, Hamilton, Ontario MedicalResearch.com: What are the main findings of the study? Response: Similar effect of dabigatran  as warfarin, 92% risk reduction compared to placebo. The risk of bleeding is reduced by almost 50% compared to warfarin but in comparison with placebo there is an increased risk of minor bleeding. No routine coagulation monitoring or dose adjustments are required, making the treatment convenient for patients and physicians.
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