Aging, Author Interviews, Fertility, OBGYNE / 15.05.2019

MedicalResearch.com Interview with: Nancy Phillips, MD Clinical Assistant Professor Rutgers Robert Wood Johnson Medical School Women's Health Institute New Brunswick, NJ MedicalResearch.com: What is the background for this study? What are the main findings? Response: The background of this article was as an interest piece prompting a literature review. We both felt it represented an underserved clinical need. The main findings are that the paternal age at conception does impact pregnancy outcomes,  including pregnancy complications, fetal chromosomal anomalies and childhood cancers and psychological disorders. (more…)
Aging, Author Interviews, Cognitive Issues, Lifestyle & Health / 13.04.2019

MedicalResearch.com Interview with: Carla R. Schubert, MS Researcher,  EpiSense Research Program Dept. of Ophthalmology & Visual Sciences School of Medicine and Public Health University of Wisconsin Madison, WI  53726-2336  MedicalResearch.com: What is the background for this study? Response: Mildlife is an important time-period for health later in life and also when declines in sensory and cognitive functions may begin to occur. Hearing, vision and smell impairments have been associated with cognitive impairments in older adults and with worse cognitive function in middle-aged adults.  These associations may be reflecting the close integration of sensory and cognitive systems as both require good brain function. (more…)
Aging, Author Interviews, Circadian Rhythm / 21.03.2019

MedicalResearch.com Interview with: Adrian Bejan PhD ( MIT 1971, 1972, 1975 ) J.A. Jones Distinguished Professor Duke University MedicalResearch.com: What is the background for this study? What are the main findings? Response: Among the most common human perceptions is that time passes faster as an individual becomes older. The days become shorter, and so do the years. We all have stories of this kind, from the long days of childhood and the never-ending class hours in elementary school, to days, months and years that now pass in a blur. Why does it feel that the time passes faster as we get older? What is the physical basis for the impression that some days are slower than others? Why do we tend to focus on the unusual (the surprise), not on the ever present? This new article unveils the physics basis for these common observations. The reason is that the measurable ‘clock time’ is not the same as the time perceived by the human mind. The ‘mind time’ is a sequence of images, i.e. reflections of nature that are fed by stimuli from sensory organs. The rate at which changes in mental images are perceived decreases with age, because of several physical features that change with age: saccades frequency, body size, pathways degradation, etc. The misalignment between mental-image time and clock time serves to unite the voluminous observations of this phenomenon in the literature with the constructal law of evolution everywhere, as physics. (more…)
Aging, Author Interviews, Exercise - Fitness, JAMA / 25.02.2019

MedicalResearch.com Interview with: Fuzhong Li, Ph.D. Senior Scientist Oregon Research Institute MedicalResearch.com: What is the background for this study? What are the main findings? Response: Injurious falls among community-dwelling older adults are a serious public health and cost-bearing problem worldwide.Exercise has been shown to reduce falls and injurious falls among older adults. However, evidence is limited with regard to the type of exercise interventions that are most effective, without exacerbating the risk in some individuals, in reducing injurious falls. This study addresses this knowledge gap in the field of falls prevention. Findings from this study showed that a six-month Tai Ji Quan program reduced the incidence of injurious falls among frail elderly by 53% compared to a regular (multimodal) exercise intervention. The effect of the Tai Ji Quan intervention was shown to be robust, and still evident at follow-up examinations six months after the study. (more…)
Aging, Author Interviews, Genetic Research / 12.02.2019

MedicalResearch.com Interview with: Yurii Aulchenko Co-founder and Chief Scientist of PolyOmica PolyOmica is a research & development company providing services and tools for quantitative genetics and functional genomics. Peter Fedichev Founder and Chief Science Officer of Gero Gero is a data-driven longevity company developing innovative therapies that will strongly extend the healthy period of life also known as healthspan MedicalResearch.com: What is the background for this study? What are the main findings? Peter Fedichev, Gero: Age is the most important risk factor behind age-related diseases and death. Lifespan has increased quite dramatically over the last 150-200 years mostly due to the eradication of early-life mortality. What we find, however, is that the healthspan, understood as the chronic diseases-free period, is also on the rise, but not so much. It appears that lifespan is modifiable by interventions, at least in lab animals. It is therefore crucial to understand if the biology behind human healthspan. Is it the same as that of lifespan? What are the molecular pathways and genetic factors controlling the healthspan? At the end, we would like to develop interventions that extend not only lifespan, but also the healthspan. Everyone wants to stay healthy! Yurii Aulchenko, PolyOmica: We studied the incidence of the most prevalent age-related diseases in the large UK Biobank, one of the best repositories of biologically and medically relevant data from a very large cohort of aging individuals. We observed that the incidence (the chances of) all the major diseases increased exponentially with age. The diseases risk doubling time was about eight years, same as the mortality doubling time from the Gompertz mortality law, discovered as early as in 1825 and used in life insurance ever since. The similar patterns of age-dependent risk acceleration suggest a major common driver behind the diseases, that is most plausibly aging itself. Peter Fedichev, Gero: The incidence of the diseases could, therefore, be used as a biomarker of aging process. We used the age at the onset of the first age-related disease (the end of healthspan) as the target for a genome-wide association study (GWAS) and identified as many as 12 genetic loci associated with human healthspan. (more…)
Aging, Author Interviews, Exercise - Fitness, Frailty / 04.02.2019

MedicalResearch.com Interview with: "DSC08418" by Debs (\xf2\u203f\xf3)\u266a is licensed under CC BY 2.0. To view a copy of this license, visit: https://creativecommons.org/licenses/by/2.0Cathie Sherrington FAHMS Professor, NHMRC Senior Research Fellow Institute for Musculoskeletal Health The University of Sydney MedicalResearch.com: What is the background for this study? What types of exercise were tested or indicated? Response: Falls are a very common problem with at least one in three people aged 60+ falling each year. This review included all types of exercises delivered to people aged 60+ in the general community i.e., not those living in supported accommodation and not among people with particular health conditions such as a stroke or Parkinson’s disease. (more…)
Aging, Author Interviews, Neurological Disorders / 24.01.2019

MedicalResearch.com Interview with: Rachael D. Seidler, PhD Professor, Applied Physiology & Kinesiology University of Florida MedicalResearch.com: What is the background for this study? Response: There is accumulating evidence that spaceflight impacts the human brain: the brain is shifted higher within the skull and there are some regions of gray matter increases and decreases. To date, no studies have looked at the impact of spaceflight on human brain white matter pathways. Rodents flown in space show decreased myelination of white matter pathways. Here, we analyzed brain MRI scans pre and post spaceflight to quantify fluid shifts and white matter changes. (more…)
Aging, Author Interviews, Exercise - Fitness, Gender Differences / 22.01.2019

MedicalResearch.com Interview with: Lloyd Brandts PhD Candidate Maastricht University Maastricht, the Netherlands MedicalResearch.com: What is the background for this study? Response: Although the number of people who reached old age has increased over the past few decades, in some developing countries it has been observed that the increase in life expectancy started to plateau. One commonly used argument to explain this plateauing is the growing number of obese and physically inactive individuals. Therefore, we assessed whether there is an association between these factors and the chance of reaching the age of 90 years. (more…)
Aging, Author Interviews, Geriatrics, Lancet, Nutrition, UC Davis, Weight Research / 15.01.2019

MedicalResearch.com Interview with: Valter Longo, PhD Edna M. Jones Professor of Gerontology Professor of Biological Sciences Leonard Davis School of Gerontology Director of the USC Longevity Institute USC MedicalResearch.com: What is the background for this study? What are the main findings? Response: The use of a low calorie diet that mimics fasting for 4 days twice a month starting at middle age can extend lifespan and rejuvenate mice. In humans a similar diet once a month causes improvements in cholesterol, blood pressure , inflammation, fasting glucose etc consistent with rejuvenation (more…)
Aging, Author Interviews, Hearing Loss, JAMA / 11.11.2018

MedicalResearch.com Interview with: David Loughrey PhD Atlantic Fellow for Equity in Brain Health Global Brain Health Institute DeafHear Research Partner NEIL Programme Trinity College Institute of Neuroscience MedicalResearch.com: What is the background for this study? Response: The World Organisation (WHO) estimate that one-third of older adults aged 65 and over have a disabling hearing loss. Increasingly, research is finding that age-related hearing loss (ARHL) may be associated with other negative health outcomes, including dementia which currently affects 50 million people worldwide. A study recently published in The Lancet reported that of nine possible modifiable risk factors, addressing age-related hearing loss (ARHL) could potentially lead to the largest reduction in the prevalence of dementia globally. (more…)
Aging, Author Interviews, Frailty, Geriatrics, Nutrition, Protein / 05.11.2018

MedicalResearch.com Interview with: ""Trash Fish" Sustanable Seafood Dinner" by Edsel Little is licensed under CC BY-SA 2.0Nuno Mendonça RD, PhD Campus for Ageing and Vitality Newcastle‐upon –Tyne United Kingdom  MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Very old adults, those aged 85 and older, are the fastest growing age group in most western societies and are more likely to develop disability. Dietary protein is a sensible candidate because it may slow decreases in muscle mass and functional decline with aging. Although we know that protein intake is, on average, lower in older adults (a mean of 66 grams per day) compared to younger adults (a mean of 91 grams per day), research exploring protein intake and disability progression in very old adults is limited. We found that our participants from North-East England had four different disability trajectories between the ages of 85 and 90: a) a constant very low disability trajectory (difficulty with none or 1 activity of daily living (ADL))  over the 5 years; b) a low disability trajectory (difficulty with 2 ADLs) that steadily progressed to mild disability (5 ADLs); c) a mild disability score (4 ADLs) at 85 that increased to moderate disability (10 ADLs) by age 90; and d) a moderate disability score (9 ADLs) at baseline that progressed to severe disability (14 ADLs) after 5 years. We found that those with higher protein intake, especially those at or above 1 g per kg of body weight per day (70g of protein per day for a 70 kg person), were less likely to belong to a worse disability trajectory. (more…)
Aging, Author Interviews, Geriatrics, Social Issues / 29.10.2018

MedicalResearch.com Interview with: "Elderly woman speaks about Water Supply and Sanitation program in Nepal" by World Bank Photo Collection is licensed under CC BY-NC-ND 2.0Dr Sharon Leitch | MBChB, DCH, PGDipGP, FRNZCGP General Practitioner, Clinical Research Training Fellow Department of General Practice and Rural Health University of Otago New Zealand MedicalResearch.com: What is the background for this study? Response: Loneliness is associated with poor health, reduced quality of life, and increased mortality. Loneliness typically worsens with age. We were curious to learn what the prevalence of loneliness was among older New Zealanders, if there were age-specific associations with loneliness, whether there were any associations between demographic and psychosocial variables and loneliness, and we also wanted to compare centenarians (100 years or older) with elderly people (aged 65-99 years). Centenarians are a particularly interesting group to study because they are a model of successful ageing. The international Resident Assessment Instrument-Home Care (interRAI-HC) assessment has been mandatory in New Zealand for anyone undergoing assessment for publically funded support services or residential care since 2012, providing us with a comprehensive data set. We conducted a retrospective, observational, cross-sectional review of the interRAI-HC data from over 70,000 people living in the community who had their first assessment during the study period (January 2013-November 2017). We analysed eight items from the interRAI-HC data set to describe the population and evaluate the core psychosocial components of aging; age, gender, ethnicity, marital status, living arrangements, family support, depression and loneliness. (more…)
Aging, Author Interviews, Exercise - Fitness, Geriatrics, JAMA / 10.09.2018

MedicalResearch.com Interview with: Peter A. Harmer, PhD., MPH., ATC., FACSM Professor - Department of Exercise & Health Science Willamette University MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Falls in older adults have long been a significant healthcare problem associated with loss of independence, premature morbidity and mortality, and considerable financial strain on individuals and healthcare systems. With the demographic impact of the Baby Boom generation aging into retirement, this issue is becoming even more critical. Among potential prevention strategies, exercise has been proposed to be beneficial. However, establishing what types of exercise are suitable to the task has been problematic. More importantly, identifying differences in the effectiveness of various exercise approaches has been lacking. (more…)
Aging, Alzheimer's - Dementia, Author Interviews, CMAJ, Genetic Research / 06.09.2018

MedicalResearch.com Interview with: Ruth Frikke-Schmidt, Professor, Chief Physician, MD, DMSc, PhD Department of Clinical Biochemistry Rigshospitalet, Blegdamsvej & Deputy Head Department of Clinical Medicine Faculty of Health and Medical Sciences University of Copenhagen MedicalResearch.com: What is the background for this study?   Response: Alzheimer’s disease and other forms of dementia are devastating, neurodegenerative disorders affecting more than 47 million people in 2015, a number projected to triple by 2050 (1,2). Available curative treatments are lacking, and no useful risk prediction tools exist. The potential for prevention is however substantial, emphasized by the recently observed incidence decline in Western societies, likely caused by improved treatment and prevention of vascular risk factors (1,3,4). Population growth and aging, will however triple dementia prevalence by 2050, if no action is taken. Acting now with ambitious preventive interventions, delaying onset of disease by five years, is estimated to halve the prevalence globally (1,5). Despite important preventive efforts over the last decades - resulting in decreased smoking, lower blood pressure and lower cholesterol levels in the general population - physical inactivity, overweight, and diabetes remain threats for our health care system, and in particular for cardiovascular disease and dementia. Intensifying preventive efforts in general is thus of crucial importance, and especially for those patients at highest risk who most likely will benefit the most from early and targeted prevention. Risk stratification and specific treatment goals according to the estimated absolute 10-year risk, has been implemented in cardiovascular disease for years (6,7). There is an un-met need for similar strategies in dementia, underscored by the publication of several randomized multicomponent trials that seem to improve or maintain brain function in at-risk elderly people from the general population (8-10) (more…)
Aging, Author Interviews, Genetic Research, JAMA / 27.08.2018

MedicalResearch.com Interview with: Yi Zeng, Ph.D.| Professor, Center for Study of Aging and Human Development and Geriatrics Division, School of Medicine, Duke University Professor, National School of Development, Chief Scientist of Raissun Institute for Advanced Studies, Peking University Distinguished Research Scholar, Max Planck Institute for Demographic Research Foreign member of the Royal Netherlands Academy of Arts and Science MedicalResearch.com: What is the background for this study? What are the main findings? Response: Sex differences in genetic associations with human longevity remain largely unknown; investigations on this topic are important for individualized healthcare. (more…)
Aging, Author Interviews, Cannabis, Mental Health Research, Schizophrenia / 22.08.2018

MedicalResearch.com Interview with: Dr. Daniel G. Amen MD Amen Clinics, Inc., Founder Costa Mesa, CA MedicalResearch.com: What is the background for this study? What are the main findings? Response: In the largest known brain imaging study, scientists evaluated 62,454 brain SPECT (single photon emission computed tomography) scans of more than 30,000 individuals from 9 months old to 105 years of age to investigate factors that accelerate brain aging. SPECT was used to determine aging trajectories in the brain and which common brain disorders predict abnormally accelerated aging. It examined these functional neuroimaging scans from a large multi-site psychiatric clinic from patients who had many different psychiatric disorders, including bipolar disorder, schizophrenia and attention deficit hyperactivity disorder (ADHD).  Researchers studied 128 brain regions to predict the chronological age of the patient. Older age predicted from the scan compared to the actual chronological age was interpreted as accelerated aging.  The study found that a number of brain disorders and behaviors predicted accelerated aging, especially schizophrenia, which showed an average of 4 years of premature aging, cannabis abuse (2.8 years of accelerated aging), bipolar disorder (1.6 years accelerated aging), ADHD (1.4 years accelerated aging) and alcohol abuse (0.6 years accelerated aging).  Interestingly, the researchers did not observe accelerated aging in depression and aging, which they hypothesize may be due to different types of brain patterns for these disorders. (more…)
Aging, Author Interviews, Genetic Research / 15.08.2018

MedicalResearch.com Interview with: Aladdin H. Shadyab, PhD  MS, MPH, CPH Department of Family Medicine and Public Health University of California, San Diego twitter.com/TheDrAladdin MedicalResearch.com: What is the background for this study? What are the main findings? Response: Previous studies have shown that offspring of long-lived parents are not only likely to live longer but to also avoid major chronic diseases (e.g., coronary heart disease), have fewer chronic disease risk factors, and to have better cognitive and physical function in late life. However, few studies have examined parental longevity in relation to an overall measure of successful aging that included reaching old age free of both major diseases and disabilities. The objective of our study was to determine if parental longevity predicted healthy aging, defined as survival to age 90 without any major age-related diseases (coronary heart disease, stroke, diabetes, cancer, or hip fracture) or physical limitations. The participants of our study were from the Women's Health Initiative, a large, longitudinal study among postmenopausal women from the United States. We observed that women whose mothers survived to at least age 90 years were 25% more likely to achieve healthy aging. We also observed that women whose fathers only lived to age 90 did not have increased likelihood of healthy aging. However, women whose mother and father both lived to age 90 were the most likely to achieve healthy aging. (more…)
Aging, Alzheimer's - Dementia, Author Interviews / 27.07.2018

MedicalResearch.com Interview with: alkahestIan Gallager, MS Scientist at Alkahest Inc. San Francisco Bay Area  MedicalResearch.com: What is the background for this study? Response: Our research is aimed to develop novel therapeutics for age-related disorders from fundamental understandings of blood plasma. This expands upon work initially performed in the Wyss-Coray lab at Stanford utilizing a model of parabiosis. By surgically conjoining the blood supplies between a young and aged mouse, they established that beneficial effects were observed in the aged mouse brain, suggesting that there are proteins in young blood which have enhancing properties. The research presented at AAIC was the culmination of several years of model and dosing paradigm development utilizing both human plasma and a proprietary fractionated plasma product leading to advances for clinical application. (more…)
Aging, Author Interviews, Dermatology, Environmental Risks, JAMA, Technology / 25.07.2018

MedicalResearch.com Interview with: Startup Screen Dermatology APPDr. med. Titus Brinker Head of App-Development // Clinician Scientist Department of Translational Oncology National Center for Tumor Diseases (NCT) Department of Dermatology University Hospital Heidelberg Heidelberg MedicalResearch.com: What is the background for this study? What are the main findings? Response: ​While everyone in the dermatologic community appears to agree on the importance of UV-protection for skin cancer prevention, busy clinicians often lack time to address it with their patients. Thus, the aim of this study was to make use of waiting rooms that almost every patient visiting a clinic spends time in and address this topic in this setting by the means of modern technology rather than clinicians time. We used our free photoaging app "Sunface" which shows the consequences of bad UV protection vs. good UV protection on the users' own 3D-animated selfie 5 to 25 years in the future and installed it on an iPad. The iPad was then centrally placed into the waiting room of our outpatient clinic on a table and had the Sunface App running permanently. The mirroring of the screen lead to a setting where every patient in the waiting room would see and eventually react to the selfie taken by one individual patient which was altered by the Sunface App. Thus, the intervention was able to reach a large proportion of patients visiting our clinic: 165 (60.7%) of the 272 patients visiting our waiting room in the seven days the intervention was implemented either tried it themselves (119/72,12%) or watched another patient try the app (46/27,9%) even though our outpatient clinic is well organized and patients have to wait less than 20 minutes on average. Longer waiting times should yield more exposure to the intervention. Of the 119 patients who tried the app, 105 (88.2%) indicated that the intervention motivated them to increase their sun protection (74 of 83 men [89.2%]; 31 of 34 women [91.2%]) and to avoid indoor tanning beds (73 men [87.9%]; 31 women [91.2%]) and that the intervention was perceived as fun (83 men [98.8%]; 34 women [97.1%]). (more…)
Aging, Author Interviews, Dermatology / 21.07.2018

MedicalResearch.com Interview with: Keshav K. Singh, Ph.D. Joy and Bill Harbert Endowed Chair in Cancer Genetics Professor of Genetics, Pathology and Environmental Health Founding Editor-in-Chief, Mitochondrion Journal Director, Cancer Genetics Program The University of Alabama at Birmingham Birmingham, AL 35294 MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Decline in mitochondrial DNA content and mitochondrial function has been observed in aging humans. We created mouse to mimic those condition to show that decline in mitochondrial function leads to development of wrinkles and loss of hair. The main finding is that by restoring mitochondrial function we can reverse skin wrinkles to normal healthy skin and also regain hair growth.  (more…)
Aging, Author Interviews, Genetic Research / 09.07.2018

MedicalResearch.com Interview with: “siblings” by Katina Rogers is licensed under CC BY 2.0Stacy L. Andersen, PhD Assistant Professor of Medicine Project Manager New England Centenarian Study Long Life Family Study Boston University School of Medicine Boston Medical Center Boston, MA 02118 MedicalResearch.com: What is the background for this study? Response: Exceptional longevity appears to run in families. Previous studies have found that people who have siblings who live into their 90s or who reach 100 years of age have a greater chance themselves of living longer than the general population. Yet it is supercentenarians, those who reach the age of 110 years, who represent the true extreme of the human lifespan.  We wanted to determine whether the parents and siblings of supercentenarians were more likely to reach very old ages than family members of younger centenarians. We collected family tree information for 29 participants of the New England Centenarian Study aged 110-119 years. Proof of age documents and familial reconstruction methods were used to validate ages and dates of birth and death of the supercentenarian as well as his or her parents and siblings. Mean age at death was compared to birth year and sex-specific US and Swedish cohort life table estimates conditional on survival to age 20 for siblings to omit deaths due to nonheritable factors such as infectious disease or accidents and survival to age 50 (the approximate age at which women are no longer able to reproduce) for parents.  (more…)
Aging, Alzheimer's - Dementia, Author Interviews, JAMA, Ophthalmology / 29.06.2018

MedicalResearch.com Interview with: “Old Eyeglasses” by Leyram Odacrem is licensed under CC BY 2.0Diane Zheng MS NEI F-31 Research Fellow and a Ph.D. candidate in Epidemiology Department of Public Health Sciences University of Miami MedicalResearch.com: What is the background for this study? Response: Worsening vision and declining cognitive function are common conditions among older people. Understanding the association between them could be beneficial to alleviate age related cognitive decline. (more…)
Aging, Author Interviews, Social Issues / 25.06.2018

MedicalResearch.com Interview with: Bryan D. James, PhD Assistant Professor Rush Alzheimer's Disease Center Chicago, IL 60612 MedicalResearch.com: What is the background for this study? What are the main findings? Response: This study is part of a larger body of research examining how literacy and decision making abilities in different areas of life can affect the health and well-being of older adults. The main finding of this study is that a better ability to understand and utilize financial concepts was related to a lower risk of hospitalization in old age. Additionally, research conducted from financial services firm Sambla, Norway's largest bank and lender for medical loans, found that doctors and pharmacists are among Scandinavia's financial services most financially savvy, often saving for retirement 5-7 years before others working in the medical field. Over almost 2 years of follow-up, 30 percent of the 388 older men and women in this study were hospitalized at least once. A 4-point higher score on the scale of financial literacy, representing one standard deviation, was associated with about a 35 percent lower risk of hospitalization. This was after adjusting for a number of factors including physical and mental health indicators and income. The association appeared to be stronger for knowledge of financial concepts such as stocks and bonds, as opposed to the ability to perform numerical calculations. Additionally, the association was stronger for elective hospital admissions as opposed to emergency or urgent hospitalizations; this may support the notion that financial literacy is related to medical decision-making surrounding the decision to be hospitalized, such as which procedures are covered by Medicare. (more…)
AACR, Aging, Author Interviews, Cancer Research, Immunotherapy, Melanoma / 21.06.2018

MedicalResearch.com Interview with: Ashani Weeraratna, Ph.D. The Ira Brind professor and Co-program leader of the Immunology, Microenvironment and Metastasis Program The Wistar Institute Member of Wistar’s Melanoma Research Center Philadelphia  MedicalResearch.com: What is the background for this study? What are the main findings?  Response:  This study shows for the first time that older patients, especially those who have had prior MAPKi therapy fare better than younger patients when treated with anti-PD1. We found that tumors in younger patients and younger mice have higher levels of Tregulatory cells, the cells that regulate other immune cells. This is not true systemically, only within the tumor microenvironment. We were surprised because we expected that, as with targeted therapy, older patients would have a poorer response to immunotherapy, given what we perceive as a poorer immune system in older patients.  (more…)
Aging, Author Interviews, Circadian Rhythm, Sleep Disorders / 29.03.2018

MedicalResearch.com Interview with: “Woman sleeping” by Timothy Krause is licensed under CC BY 2.0Dr Gurprit S. Lall BSc, MSc, PhD, PGCHE, FHEA Medway School of Pharmacy Interim Deputy Head of School Senior Lecturer in Pharmacology Director of Graduate Studies (Research), University of Kent at Medway Chatham Maritime, Chatham, Kent MedicalResearch.com: What is the background for this study? What are the main findings? Response: Medical advancement in prevention and diagnosis of disease has increased life expectancy significantly, thus generating an ageing population far greater than previously seen.  Because of this, it is essential that we begin to understand the ageing process, together with the health implications associated with senescence.  Recent research has found that changes in the circadian clock, located in the brain, play a contributing role in the decline of many physiological and behavioural traits observed through the ageing process.  One example of this, which is commonly seen in the elderly is a decline in sleep-wake cycle regulation; typically presenting as disrupted sleeping patterns. The circadian clock, in mammals, possesses the ability to integrate our social lifestyle choices with the environmental day-night cycle to generate a 24-hour rhythm to which our physiological functions are synchronised.  It is this synchronisation that plays a vital role in regulating many of our behavioural outputs, such as sleeping-wake patterns.  This clock takes its strongest timing cue from the natural day night cycle governed by the duration of daily sunlight. Our study investigated the changes in the interpretation of this light signal by the circadian clock as we age and its impact on function.  We found that the clock became less responsive to light stimuli at both the level of clock cells and at driving behavioural activity.  We were able to narrow this down to changes in the proteins within cells that relay light information to the molecular time setting machinery.  In detail, light signals are relayed to the clock through an excitatory neurotransmitter called glutamate and this signal is predominantly relayed through NMDA receptors located on the surface of clock cells.  It is the configuration of the NMDA receptor that alters as we age and this leads to the clock becoming less responsive to light. (more…)
Aging, Alcohol, Author Interviews, JAMA, Stanford / 15.03.2018

MedicalResearch.com Interview with: alcohol-cdc-imageEdith V. Sullivan, Ph.D. Professor Department of Psychiatry & Behavioral Sciences Stanford University School of Medicine Stanford, CA 94305-5723  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Alcohol misuse is a major public health problem worldwide with profound health consequences on the body, brain, and function. Our research group has conducted naturalistic yet controlled studies of alcohol dependence for several decades to further our understanding of when and how alcohol misuse affects specific parts of the brain.  In addition, we wanted to know how alcohol misuse interacts with the typical changes in the brain as we grow older.  The studies are controlled in that we recruit healthy, non-alcohol dependence men and women from the community to undergo the same screening and neuroimaging procedures as our alcoholic recruits.  The studies are quantitative because we use neuroimaging methods (Magnetic Resonance Imaging) that enable us to measure specific regions of brain structural volumes.  Consistent collection of such data over the years positioned us to ask whether age and alcohol dependence interact to produce regional brain volume loss beyond the loss that occurs in normal aging. A number of cross-sectional studies pointed to the likelihood that the effects of alcohol dependence on brain structure would be exacerbated by normal aging, which we do know from longitudinal neuroimaging studies results in shrinkage of cortical gray matter volume and thinning of the cortex. What was particularly striking about our longitudinal study of men and women with alcohol dependence was the acceleration of the aging of brain structure that was especially prominent in the frontal cortex.  Critically, even those who initiated dependent drinking at an older age showed accelerated loss. Because our study sample was large enough, we could also test whether our findings were attributable to conditions that commonly co-occur with alcohol dependence, namely, illicit drug use and hepatitis C.  Although both drug use and hepatitis C infection may have exacerbated brain volume loss, these factors did not fully account for the alcoholism-aging interaction we identified. (more…)
Aging, Author Interviews, Cancer Research, Johns Hopkins / 12.03.2018

MedicalResearch.com Interview with: Hariharan Easwaran, PhD Assistant Professor of Oncology The Sidney Kimmel Comprehensive Cancer Center The Johns Hopkins University School of Medicine Bunting/Blaustein Cancer Research Building 1 Baltimore, MD 21287 MedicalResearch.com: What is the background for this study? What are the main findings?  Response: The interpretation of the information encoded in our DNA by the various cells in our body is mediated by a plethora of modifications of DNA and proteins that complex with DNA. DNA methylation is one such important modification, which is normally established in a very orchestrated fashion during development. All normal cells have a defined pattern of DNA methylation, which may vary by tissue type, but is consistent within tissues. This normal pattern is disrupted in all known cancers, and is considered a hallmark of cancers. (more…)
Aging, Author Interviews, Psychological Science / 27.02.2018

MedicalResearch.com Interview with: “Im Spiegel / In the mirror” by njs-photographie is licensed under CC BY-NC-ND 3.0William Chopik PhD Department of Psychology Michigan State University East Lansing, MI  MedicalResearch.com: What is the background for this study? Response: The motivation for the study was that we saw a lot of differences in the way people defined "old age". We also noticed that there is a stigma that goes along with being old. So we had a natural curiosity to see how these perceptions my change as people age. As people aged, the tended to report feeling younger and consider an older adult as "always in the future"--never quite where they are now. We found that our results confirmed a lot of existing theories about how our attitudes toward aging change as we age ourselves. (more…)
Aging, Author Interviews, BMJ, Cost of Health Care, Global Health / 11.02.2018

MedicalResearch.com Interview with: Dr Grace Sum Chi-En National University of Singapore MedicalResearch.com: What is the background for this study? Response: Chronic diseases are conditions that are not infectious and are usually long-term, such as diabetes, hypertension, cancer, chronic lung disease, asthma, arthritis, stroke, obesity, and depression. They are also known as non-communicable diseases (NCDs). Multimorbidity, is a term we use in our field, to mean the presence of two or more NCDs. Multimorbidity is a costly and complex challenge for health systems globally. With the ageing population, more people in the world will suffer from multiple chronic diseases. Patients with multimorbidity tend to need many medicines, and this incurs high levels of out-of-pocket expenditures, simply known as cost not covered by insurance. Even the United Nations and World Health organisation are recognising NCDs as being an important issue. Governments will meet in New York for the United Nations 3rd high-level meeting on chronic diseases in 2018. Global leaders need to work towards reducing the burden of having multiple chronic conditions and providing financial protection to those suffering multimorbidity. Our research aimed to conduct a high-quality systematic review on multimorbidity and out-of-pocket expenditure on medicines.  (more…)