Author Interviews, Cognitive Issues / 12.06.2015

Dr. Li-Huei Tsai Ph.D. Professor and Director - Picower Institute For Learning and Memory Department of Brain and Cognitive Sciences Massachusetts Institute of Technology Cambridge, MA MedicalResearch.com Interview with: Dr. Li-Huei Tsai Ph.D. Professor and Director - Picower Institute For Learning and Memory Department of Brain and Cognitive Sciences Massachusetts Institute of Technology Medical Research: What is the background for this study? What are the main findings? Dr. Tsai: For a while now, we have been interested in observations made by many labs, including our own, that the accumulation of DNA lesions is a hallmark of the aging brain, and that mutations in DNA repair factors manifest in congenital and neurodegenerative disorders. However, the precise contribution of unrepaired DNA lesions to the development of neurological disorders remains poorly understood. A major confounding factor is that the sources that generate DNA lesions in the brain are not well characterized, and it is not known whether damage accumulates non-specifically throughout the genome, or whether there are certain regions that are more prone to accumulate DNA damage. In this regard, our study reports three major findings: (1) Physiological neuronal activity itself results in the formation of DNA breaks; (2) Neuronal activity-induced DNA breaks form at highly specific locations, including within the promoters of a subset of immediate early genes, including Fos, Npas4, and Egr1. These genes are also rapidly expressed in response to neuronal stimulation, and play crucial roles in experience-driven changes to synapses, and learning and memory; (3) Neuronal activity-induced breaks are generated by a topoisomerase, Topo IIβ, and Topo IIβ-generated DNA breaks facilitate the rapid expression of these immediate early genes following neuronal stimulation. (more…)
Alzheimer's - Dementia, Author Interviews, JAMA, Medical Imaging, UCSF / 20.05.2015

Rik Ossenkoppele PhD. Postdoctoral researcher UCSF Memory and Aging CenterMedicalResearch.com Interview with: Rik Ossenkoppele PhD. Postdoctoral researcher UCSF Memory and Aging Center MedicalResearch: What is the background for this study? Dr. Ossenkoppele: Since 2004, several PET tracers have been developed that measure fibrillar amyloid-β plaques, a neuropathological hallmark of Alzheimer’s disease (AD). Through visual assessment by a nuclear medicine physician or quantitative cut-points, the presence or absence of amyloid-β pathology can be determined in the living human brain. The FDA, in support of the clinical application of amyloid imaging, has recently approved three of these PET tracers. A proportion of patients with other types of dementia then Alzheimer’s disease that harbor cerebral amyloid-β pathology, however, potentially limits the clinical utility of amyloid imaging. When ordering clinical amyloid PET scans and correctly interpreting the significance of amyloid PET results, clinicians need to understand the prevalence of amyloid-positivity across different types of dementia. It is also important to be aware of the relationships of amyloid-positivity prevalence and demographic (e.g. age and sex), cognitive and genetic (e.g. presence of the AD-risk allele apolipoprotein E [APOE] ε4) factors. Most amyloid PET studies to date come from single centers with modest sample sizes. We therefore conducted a meta-analysis with individual participant data from 29 cohorts worldwide, including 1359 patients with clinically diagnosed Alzheimer’s disease and 538 patients with non-AD dementia. We also included 1849 healthy controls with amyloid PET data, and an independent sample of 1369 AD patients with autopsy data from the NACC database. MedicalResearch: What are the main findings? Dr. Ossenkoppele: In patients clinically diagnosed with Alzheimer’s disease, the prevalence of amyloid-positivity decreased from 93% at age 50 to 79% at age 90. The drop in amyloid-positivity was most prominent in older Alzheimer’s disease patients who did not carry an APOE ε4 allele (~1/3 of these patients had a negative amyloid PET scan). This most likely reflects a mix of 1) clinical misdiagnoses (i.e. non-AD pathology causing an AD phenotype), 2) false negative PET scans (i.e. abundance of cerebral amyloid pathology that is not detected by PET), and 3) possibly elder patients need less amyloid pathology (sub-threshold levels for PET) to reach the stage of dementia due to age-related reductions in cognitive resilience (“cognitive reserve theory”) or simultaneous presence of multiple pathologies (“double-hit theory”). The relatively high rate of amyloid-negative Alzheimer’s disease patients highlights the necessity of biomarker-informed patient selection for Alzheimer’s disease clinical trials. In most patients clinically diagnosed with non-AD, the prevalence of amyloid-positivity increased with aging and was ~18% higher in APOE ε4 carriers. Presence of amyloid pathology in non-AD dementia may reflect 1) clinical misdiagnosis (i.e. AD pathology is the causative pathology), or 2) comorbid pathologies, where amyloid may be secondary to other pathologies that are actually driving the clinical presentation. Interestingly, patients with a clinical diagnosis of non-AD dementia who harbored cerebral amyloid pathology showed lower Mini-Mental State Examination scores (measure of global cognition), suggesting that amyloid-β is not just an innocent bystander. (more…)
Alzheimer's - Dementia, Author Interviews, Diabetes, JAMA / 28.04.2015

MedicalResearch.com Interview with: Dimitry S. Davydow, MD, MPH Associate Professor Department of Psychiatry and Behavioral Sciences University of Washington School of Medicine Seattle, WA 98195 Dr, Davydow wishes to acknowledge Dr. Wayne Katon, the lead investigator of the study, who passed away on March 1, 2015. Medical Research: What is the background for this study? Dr. Davydow: The medical and public health communities have known for quite a while that diabetes and depression are both potential risk factors for developing dementia later in life. Dr. Wayne Katon previously published two articles detailing the results of two studies of relatively large groups of patients (one with nearly 4,000 patients and the other with 29,000 patients) with diabetes showing that those with diabetes and co-existing depression had a greater risk of developing dementia later in life than those patients with just diabetes. These initial studies were important since patients with diabetes are 3 to 4-times more likely to suffer from depression compared to the general population. However, it remained unclear when comparing to a population without either diabetes or depression, to what extent each independently raised the risk of developing dementia, and then to what extent having both conditions increased an individual’s subsequent risk of dementia. We sought to answer these questions with this study. In addition, with the growing obesity epidemic, which carries with it higher burdens of both diabetes and depression, there is reason to be concerned that the risk of dementia could be higher at even younger ages. To address this issue, we also wanted to see if there was a differential impact of the combination of diabetes and co-existing depression on dementia risk among those younger than 65 compared to individuals 65 or older. We were fortunate to be able to examine health data from all Danish citizens 50 or older over a 6 year period, a population numbering nearly 2.5 million people to be able to answer these questions. Medical Research: What are the main findings? Dr. Davydow: We found that compared to individuals without diabetes or depression, those with diabetes alone had about a 15% greater risk of developing dementia, those with depression alone had about an 83% greater risk of developing dementia, and those with both diabetes and co-existing depression had a 107% greater risk of developing dementia compared to those without either condition. We also found that of all of the cases of dementia diagnosed in Denmark among individuals 50 or older between 2007 through 2013, 6% were potentially due to combination of having both diabetes and depression. This was also true for those 65 or older, where 6% of all diagnosed dementia was potentially attributable to the combination of both diabetes and depression. However, among individuals under age 65, we found that 25% of all cases of dementia may have been directly attributable to the combination of diabetes and co-existing depression. (more…)
Author Interviews, Cognitive Issues, Nutrition / 16.04.2015

Dr. Fredrik Jernerén PhD Postdoctoral Research Fellow Department of Pharmacology University of Oxford Oxford, United KingdomMedicalResearch.com Interview with: Dr. Fredrik Jernerén PhD Postdoctoral Research Fellow Department of Pharmacology University of Oxford Oxford, United Kingdom Medical Research: What is the background for this study? What are the main findings? Dr. Jernerén: Development of dementia and Alzheimer’s disease is associated with an accelerated rate of brain shrinkage. Identifying ways to reduce the brain atrophy rate at an early stage may offer new strategies to prevent or delay the onset of dementia. In this study on elderly subjects diagnosed with Mild cognitive impairment (MCI), who are at increased risk of developing dementia, we investigated whether the effect of B vitamin supplementation on reducing the brain atrophy rate was influenced by circulating levels of omega-3 fatty acids. We have found that this indeed was the case. The higher the baseline concentration of the combined omega-3 fatty acids (DHA+EPA), the greater the protective effect of the B vitamin treatment. In subjects with high omega-3 concentrations who at the same time had elevated homocysteine levels (indicating a lack of B vitamins), B vitamin treatment reduced the brain atrophy rate by about 70% compared with the placebo group.  (more…)
Author Interviews, Cognitive Issues, Memory / 07.04.2015

MedicalResearch.com Interview with: Dr. Lim Lee Wei School of Biological Sciences, Nanyang Technological University, Singapore; Department of Biological Sciences, Sunway University, Malaysia Medical Research: What is the background for this study? What are the main findings? Response: To date, pharmacological treatments for dementia have limited effects (most of the drugs failed in the second or third clinical trials) and there are no known treatments that cure or delay the progression of this memory impairment. Therefore, a novel non-pharmacological approach such as deep brain stimulation (DBS) is currently considered as an alternative treatment to reduce the symptomatic and progression of this memory deterioration. Deep brain stimulation for dementia-related disease is currently evaluated as a potential therapy. In line with this development, evidence from recent studies suggests that deep brain stimulation might enhance memory functions when particular brain areas are stimulated. Of particular interest in our study, electrical stimulation of the Prefrontal Cortex induced striking antidepressant activity in both patients and animals studies (see our recent study, Lim et al., 2015 Translational Psychiatry; http://www.nature.com/tp/journal/v5/n3/full/tp201524a.html). However, no studies have shown the putative role of Prefrontal Cortex deep brain stimulation in learning and memory performance. In our finding, we have shown that deep brain stimulation of this region (Prefrontal Cortex) improved the short-term and long-term memory by a very important mechanism, which led to the formation of new brain cells in another region of the brain called the hippocampus, which is also involved in memory. Therefore, our findings suggest that deep brain stimulation of the Prefrontal Cortex has the potential to be developed into a therapy to treat dementia and other conditions that lead to memory loss in humans. (more…)
Author Interviews, Cognitive Issues, JAMA, University of Michigan / 18.03.2015

Donovan Maust, MD, MS Assistant Professor of Psychiatry University of Michigan Research Scientist, Center for Clinical Management Research VA Ann Arbor Healthcare SystemMedicalResearch.com Interview with: Donovan Maust, MD, MS Assistant Professor of Psychiatry University of Michigan Research Scientist, Center for Clinical Management Research VA Ann Arbor Healthcare System Medical Research: What is the background for this study? What are the main findings? Dr. Maust: From a recent government report, we known that about 1/3 of older adults with dementia in nursing homes and about 14% of those in the community have been prescribed an antipsychotic. While providers focus on what benefit the treatment they offer, it is important to also be aware of the potential harms, particularly when it is death. Prior estimates came from relatively short studies and showed a 1% increase. This paper finds that, over 180 days, the increased mortality comparing antipsychotic users to matched non-users is about 2 to 5 times higher. (more…)
Alzheimer's - Dementia, Author Interviews, Exercise - Fitness / 06.02.2015

MedicalResearch.com Interview with: Paula Iso-Markku, MD, Department of Clinical Physiology and Nuclear Medicine,  HUS Medical Imaging Center,  Helsinki University Central Hospital and University of Helsinki Helsinki , Finland MedicalResearch: What is the background for this study? What are the main findings? Dr. Iso-Markku : The social, financial and humane burden of the dementia is extensive as the worldwide prevalence of dementia is estimated around 35.6 million. Finding efficient prevention strategies for dementia is crucial. Within the past decade vascular risk factors have been recognized as very potential risk factors of dementia. As physical activity is known to affect vascular risk factors, it might also be a potential preventive tool against dementia. Few comprehensive epidemiological studies on physical activity in middle age and dementia occurrence later in life have been conducted. The comprehensive Finnish Twin Study offers a unique approach to the subjects as the shared growing up environment and genes can be taken into account. The study population is extensive and a good representation of the Finnish population. In this study the association of physical activity in adulthood and dementia mortality was investigated in a 29-year follow-up. The main finding in this study was that persistent vigorous (i.e. more strenuous than walking) physical activity was significantly associated with lower dementia mortality. The results in the paired analysis, comparing twins to co-twins, were similar but remained non-significant. The analyses of the volume of physical activity were, however, controversial. (more…)
Author Interviews, Cognitive Issues, Memory / 02.02.2015

dr-peter-bayleyMedicalResearch.com Interview with: Peter Bayley PhD War Related Illness and Injury Study Center Veteran Affairs Palo Alto Health Care System Palo Alto, California MedicalResearch.com: What is the background for this study? What are the main findings? Dr. Bayley: There is currently widespread interest and debate surrounding the topic of screening for Alzheimer’s disease and other types of dementia The study describes results from National Memory Screening Day in 2010, an annual community event sponsored by the Alzheimer Foundation of America. Face-to-face screening takes place in a private setting; only the individual being tested and the screener are present. The memory screening consists of one of seven validated cognitive tests: the GPCOG (General Practitioner Assessment of Cognition), MINI-COG, MIS (Memory Impairment Screen), the BAS (Brief Alzheimer’s Screening), Kokmen Short Test of Mental Status, Mini-Mental State Examination, Montreal Cognitive Assessment, or the Saint Louis University Mental Status Examination.  Participants with scores below cutoff for possible dementia are encouraged to bring the results to their healthcare professional for follow-up and/or inclusion in medical files. We report the results from a subset of 3,064 participants. Overall, 11.7% failed one of the memory screening tests. As expected, failure rates were higher in older and less-educated participants (P’s < .05). Subjective memory concerns were associated with a 40% greater failure rate for persons of similar age and education but no memory concerns (odds ratio = 1.4, 95% confidence interval = 1.07–1.78). However, most individuals who expressed concern about their memories passed the screening tests (54-96%, depending on age and education). (more…)
Author Interviews, Cognitive Issues, JAMA / 26.01.2015

Shelly L. Gray, PharmD, MS Professor of Pharmacy School of Pharmacy, University of Washington, SeattleMedicalResearch.com Interview with: Shelly L. Gray, PharmD, MS Professor of Pharmacy School of Pharmacy, University of Washington, Seattle Medical Research: What is the background for this study? What are the main findings? Dr. Gray: Many medications have anticholinergic effects such as those used to treat overactive bladder, seasonal allergies, and depression.  The general view is that anticholinergic-induced cognitive impairment is reversible, however, emerging evidence suggests that these medications may be associated with increased dementia risk.  We conducted a prospective population-based cohort study in 3434 older adults to examine whether cumulative anticholinergic medication use is associated with increased risk of incident dementia.  Using automated pharmacy data, we found that higher 10-year cumulative dose was associated with increased risk for dementia and Alzheimer disease over an average of 7.3 years of follow-up.  In particular, people with the highest use (e.g. taking the equivalent of oxybutynin 5 mg/day or chlorpheniramine 4 mg/day for longer than 3 years) were at greatest risk. (more…)
Author Interviews, Brain Injury, Cognitive Issues, JAMA, UCSF / 27.10.2014

Raquel C. Gardner, MD, Research Fellow San Francisco VA Medical Center Clinical Instructor Memory and Aging Center, Department of Neurology University of California, San FranciscoMedicalResearch.com Interview with: Raquel C. Gardner, MD, Research Fellow San Francisco VA Medical Center Clinical Instructor Memory and Aging Center, Department of Neurology University of California, San Francisco Medical Research: What are the main findings of the study? Dr. Gardner: We found that people who experience a  traumatic brain injury (TBI )when they are 55 or older have a 26% higher chance of getting dementia over the next 5 to 7 years compared to people who experience bodily trauma. (more…)
Author Interviews, Cognitive Issues, General Medicine, Mental Health Research, Neurology / 26.09.2014

Richard J. Kryscio, PhD, Professor Sanders-Brown Center on Aging University of KentuckyMedicalResearch.com Interview with: Richard J. Kryscio, PhD, Professor Sanders-Brown Center on Aging University of Kentucky Medical Research: What are the main findings of the study? Dr. Kryscio:  We followed 531 elderly over time assessing their cognition annually; of these 105 (about 20%) eventually were diagnosed with a serious cognitive impairment (either a mild cognitive impairment or a dementia) and 77% of the latter declared a subjective memory complaint prior to the diagnosis of the impairment.  In brief, declaration of a memory problem put a subject at three times the risk of a future impairment. (more…)
Author Interviews, Cognitive Issues, Geriatrics / 20.08.2014

Neha P. Gothe, PhD Division of Kinesiology Health and Sport Studies Wayne State University Detroit, MI 48202.Medical Research Interview with: Neha P. Gothe, PhD Division of Kinesiology, Health and Sport Studies Wayne State University Detroit, MI 48202. Medical Research: What are the main findings of the study? Dr. Gothe: The yoga group was speedier and more accurate on tests of information recall, mental flexibility and task-switching than it had been before the intervention. Participants in the yoga group showed significant improvements in working memory capacity, which involves continually updating and manipulating information. They were also able to perform the task at hand quickly and accurately, without getting distracted. (more…)
Alzheimer's - Dementia, Author Interviews, Emergency Care / 11.08.2014

Dr. Caroline E Stephens PhD Department of Community Health Systems University of California, San FranciscoMedicalResearch.com Interview with: Dr. Caroline E Stephens PhD Department of Community Health Systems University of California, San Francisco Medical Research: What are the main findings of the study? Dr. Stephens: In our national random sample of nursing home residents, we found that mild cognitive impairment (CI) predicted higher rates of ED visits compared to no CI, but interestingly, ED visit rates decreased as severity of cognitive impairment increased.  However, after nursing home residents were evaluated in the ED, severity of CI was not significantly associated with higher odds of hospitalization. Another important finding was that the proportion of nursing home residents using feeding tubes more than tripled in advanced or end-stage dementia, from 9.9% to 33.8%.  Moreover, tube-fed nursing home residents had 73% higher rates of total ED visits, but once evaluated in the ED, they were no more likely to be hospitalized than those without feeding tubes.  This finding is particularly striking given the numerous existing studies that have questioned the utility and appropriateness of using feeding tubes in people with advanced dementia. (more…)
Author Interviews, General Medicine, Mental Health Research, Nutrition / 09.08.2014

James T. Becker, Ph.D. Professor of Psychiatry, Psychology, and NeurologyMedicalResearch.com Interview with: James T. Becker, Ph.D. Professor of Psychiatry, Psychology, and Neurology University of Pittsburgh Medical Research: What are the main findings of the study? Dr. Becker: We found that people who eat baked or broiled (but not fried) fish at least once every week had significantly larger brain volumes in areas critical for memory and cognition, namely, hippocampus, precuneus, posterior cingulate cortex, and orbital frontal cortex. (more…)
AHA Journals, Author Interviews, Cognitive Issues, Stroke / 09.08.2014

Kumar Bharat Rajan, PhD Assistant Professor Department of Internal Medicine Section of Population Sciences Chicago IL 60612MedicalResearch.com Interview with: Kumar Bharat Rajan, PhD Assistant Professor Department of Internal Medicine Section of Population Sciences Chicago IL 60612 Medical Research: What are the main findings of the paper? Dr. Rajan: Lower levels of cognitive functioning was associated with incident stroke and the change in cognitive functioning was increased after incident stroke. Cognitive functioning was an independent marker of mortality even after accounting for incident stroke. (more…)
Alzheimer's - Dementia, Author Interviews, Mayo Clinic / 25.07.2014

Dr. Bryan K. Woodruff Assistant Professor of Neurology Mayo Clinic, ArizonaMedicalResearch.com Interview Invitation Dr. Bryan K. Woodruff Assistant Professor of Neurology Mayo Clinic, Arizona Medical Research: What are the main findings of the study? Dr. Woodruff: There is evidence in the medical literature supporting a negative impact of losing a spouse for health conditions such as cancer or cardiovascular disease, but this has not been evaluated in terms of the impact of widowhood on the development of dementia.  We used the National Alzheimer’s Disease Coordinating Center (NACC) database, which pools data gathered by multiple federally-funded Alzheimer’s disease research centers to try to answer this question.  Specifically, we looked at the age at which individuals ultimately developed dementia in both individuals who lost their spouse and in those who remained married over the course of the study.  Surprisingly, the data we analyzed did not support a negative impact of losing a spouse in individuals who had no cognitive difficulties when they entered the study, and we saw a paradoxical effect of widowhood in those with mild cognitive impairment (MCI). (more…)
Alzheimer's - Dementia, Author Interviews, JAMA, Neurological Disorders, Stroke / 23.07.2014

MedicalResearch.com Interview with: Agustin Ibanez, PhD Laboratory of Experimental Psychology and Neuroscience Institute of Cognitive Neurology and the National Scientific and Technical Research Council and Sandra Baez, MS; Institute of Cognitive Neurology and Institute of Neuroscience, Favaloro University, Buenos Aires, Argentina Medical Research: What are the main findings of the study? Answer: Both patients with the behavioral variant of frontotemporal dementia (bvFTD) and patients with frontal strokes presented moral judgment abnormalities. Their deficits were related to impairments in the integration of intentions and outcomes. Specifically, both patient groups judged moral scenarios by focusing on the actions' outcomes instead of the protagonists' intentions. (more…)
Author Interviews, Cognitive Issues, JAMA, Mayo Clinic / 24.06.2014

Prashanthi Vemur, Ph.D. Mayo Clinic Rochester, MinnesotaMedicalResearch.com Interview with: Prashanthi Vemur, Ph.D. Mayo Clinic Rochester, Minnesota   MedicalResearch: What are the main findings of the study? Dr. Vemuri: Lifetime intellectual enrichment might delay the onset of cognitive impairment and be used as a successful preventive intervention to reduce the impending dementia epidemic. We studied two non-overlapping components of lifetime intellectual enrichment: education/occupation-score and mid/late-life cognitive activity measure based on self-report questionnaires. Both were helpful in delaying the onset of cognitive impairment but the contribution of higher education/occupation was larger. (more…)
Author Interviews, Cognitive Issues, Long Term Care / 23.06.2014

Regina Shih PhD Senior Behavioral Scientist at the RAND Corporation.MedicalResearch.com Interview with: Regina Shih PhD Senior Behavioral Scientist at the RAND Corporation.   MedicalResearch: What are the main findings of the study? Dr. Shih: RAND identified 25 high-impact policy options to improve the delivery, workforce, and financing of long term care, with a specific eye toward those with dementia and their caregivers. Undertaking these 25 policy options would achieve five goals: increasing public awareness of dementia and its signs and symptoms; improving access to long-term care; promoting high-quality, person-centered care like that offered at Lakeside Manor; providing better support for family caregivers; and reducing the burden of dementia costs on individuals and their families. Of these 25 policy options, we identified four unique options that have never been identified in any national plan on dementia or long-term care. This is likely because we focused on the intersection between dementia and long-term care, rather than just one or the other. And, rather than only focusing on actions that federal agencies can take, we identified policy options by interviewing 30 different stakeholders in the public and private sectors at the local, state, and national levels. These unique, high-impact policy options have to do with
  • Linking private health insurance with private long-term care insurance;
  • Including home and community-based services in state Medicaid plans;
  • Establishing cross-setting teams focused on returning the person with dementia to the community;
  • Expanding financial compensation to family caregivers.
(more…)
Cognitive Issues, Heart Disease / 19.05.2014

T. Jared Bunch, MD Medical director for Heart Rhythm Services Director of Heart Rhythm research Intermountain Medical Center, UtahMedicalResearch.com Interview with T. Jared Bunch, MD Medical director for Heart Rhythm Services Director of Heart Rhythm research Intermountain Medical Center, Utah MedicalResearch: What are the main findings of the study? Dr. Bunch: The main findings of the study are: 1) Atrial fibrillation patients treated with warfarin anticoagulation that have lower percentages of time in therapeutic range have significantly higher risks of all forms of dementia. 2) The dementia relative risk related to lower percentages of time in therapeutic range was higher than all other variables associated with stroke or risk of bleeding. 3) The risk of dementia related to lower percentages of time in therapeutic range was highest in younger patients in the study (<80 years). (more…)
Author Interviews, Cognitive Issues, JAMA / 28.04.2014

Tara Lagu MD PhD Assistant Professor of Medicine Tufts University School of MedicineMedicalResearch.com Interview with: Tara Lagu MD PhD Assistant Professor of Medicine Tufts University School of Medicine   MedicalResearch.com: What are the main findings of the study? Dr. Lagu: We found that use of mechanical ventilation in patients 65 and older is increasing rapidly. If current rates of increase continue, we expect that by 2020 there will be more than 600,000 hospitalizations per year that involve mechanical ventilation. This is a doubling in 20 years (2001-2020), and represents demand that could easily exceed the capacity of the US critical care system. We also found that increase in use among patients with dementia is 4 times faster than those without dementia. This is important because dementia is a terminal illness, and use of mechanical ventilation in patients with end-stage dementia is associated with poor 30-day and 1-year outcomes. (more…)
Author Interviews, Geriatrics, Mental Health Research / 23.04.2014

Helen C. Kales MD Professor of Psychiatry Director, Section of Geriatric Psychiatry and The Program for Positive Aging, University of Michigan Research Scientist, VA Center for Clinical Management Research and Geriatric Research Education and Clinical Center VA Ann Arbor Healthcare SysteMedicalResearch.com Interview with Helen C. Kales MD Professor of Psychiatry Director, Section of Geriatric Psychiatry and The Program for Positive Aging, University of Michigan Research Scientist, VA Center for Clinical Management Research and Geriatric Research Education and Clinical Center VA Ann Arbor Healthcare System Please note that this paper is the result of the deliberations of a multi-disciplinary national expert panel, not a specific study. MedicalResearch.com: What were the main findings of the expert panel? Dr. Kales: Often more than memory loss, behavioral symptoms of dementia are among the most difficult aspects of caring for people with dementia. These symptoms are experienced almost universally, across dementia stages and causes, and are often associated with poor outcomes including early nursing home placement, hospital stays, caregiver stress and depression, and reduced caregiver employment.  Doctors often prescribe these patients psychiatric medications like antipsychotics, despite little hard evidence that they work well in this population and despite the risks they pose including hastening death.  Meanwhile, studies show promise for non-medication behavioral and environmental approaches (such as providing caregiver education/support, creating meaningful activities and simplifying/enhancing the environment), but too few health providers are trained in their use.  The method created by the national multidisciplinary group of experts (DICE which stands for Describe, Investigate, Create and Evaluate) represents a comprehensive approach to assessment and management of behavioral symptoms in dementia.  For example, a new report of “agitation” from a caregiver, should be fully understood and described (e.g. who/what/when/where/risk/safety); underlying causes should be investigated (e.g. pain, changes in medications, medical conditions, poor sleep, fear); a treatment plan should be created (e.g. responding to physical problems, working collaboratively with the caregiver and other team members to institute non-pharmacologic interventions); and evaluating whether the interventions tried were effective. (more…)
Alzheimer's - Dementia, Author Interviews, Cognitive Issues / 12.04.2014

Ioannis Tarnanas M.Sc Senior Researcher Gerontechnology and Rehabilitation Research Group, ARTORG Centre for Biomedical Engineering, University of Bern, 3010 Bern, SwitzerlandMedicalResearch.com Interview with: Ioannis Tarnanas M.Sc Senior Researcher Gerontechnology and Rehabilitation Research Group, ARTORG Centre for Biomedical Engineering, University of Bern, 3010 Bern, Switzerland MedicalResearch.com: What are the main findings of the study? Answer: We examined 75 healthy older people and 134 patients with mild cognitive impairment. Our aim was to collect neuropsychological, neurophysiological, neuroimaging and behavioural data by means of a virtual reality serious game, in order to model the profile of the patients who will progress to dementia within the next 2-4 years. We found that the prediction based on the performance at the virtual reality based computerized assessment instrument is comparable to that of more established and widely accepted biomarkers, such as ERP and MRI. This can be explained by the cognitive fidelity and richness of behavioural data collected with virtual reality based measures, which directly reflect neurocognitive processes affected at a very early stage. (more…)
Alcohol, Cognitive Issues, Neurology / 25.03.2014

Osvaldo P. Almeida, MD, PhD, FRANZCP, FFPOA Professor & Winthrop Chair of Geriatric Psychiatry | School of Psychiatry & Clinical Neurosciences | University of Western Australia. Director of Research | Western Australian Centre for Health & Ageing | Centre for Medical Research | Western Australian Institute for Medical Research. Consultant | Department of Psychiatry | Royal Perth Hospital. Australia.MedicalResearch.com Interview with: Osvaldo P. Almeida, MD, PhD, FRANZCP, FFPOA Professor & Winthrop Chair of Geriatric Psychiatry | School of Psychiatry & Clinical Neurosciences | University of Western Australia. Consultant | Department of Psychiatry | Royal Perth Hospital. MedicalResearch.com: What are the main findings of this study? Prof. Almeida: This study used the principles of Mendelian randomisation to clarify whether alcohol use is a direct cause of cognitive impairment in later life. The rationale behind this approach is that the genetic variation associated with lower risk of alcohol abuse or dependence should also be associated with lower risk of cognitive impairment if alcohol misuse is a direct cause cognitive impairment. We found no evidence for such an association. (more…)
Alzheimer's - Dementia, Author Interviews, Cognitive Issues / 21.12.2013

MedicalResearch.com Interview with: Dr. Alan B. Zonderman PhD Cognition Section Laboratory of Personality and Cognition, NIA Gerontology Research Center Baltimore, MD 21224-6825 MedicalResearch.com: What are the main findings of the study? Dr. Zonderman: In a prospective population-based 5-year follow-up study the authors examined the rate at which participants converted from mild cognitive impairment to dementia or reverted from mild cognitive impairment to normal cognitive performance.  As has been common, they found elevated risk for dementia associated with mild cognitive impairment, but also found elevated risk for dementia among those who reverted (temporarily) to normal cognitive performance. (more…)
Alzheimer's - Dementia, Author Interviews, Cognitive Issues, Mayo Clinic / 20.12.2013

Dr. Ronald C. Petersen M.D., Ph.D. Division of Epidemiology Department of Health Sciences Research; Department of Neurology Mayo Clinic, Rochester, MNMedicalResearch.com Interview with: Dr. Ronald C. Petersen M.D., Ph.D. Division of Epidemiology Department of Health Sciences Research; Department of Neurology Mayo Clinic, Rochester, MN MedicalResearch.com: What are the main findings of the study? Dr. Petersen: The diagnosis of mild cognitive impairment increases the likelihood of developing dementia. (more…)