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Sperling M

Christian Panitz, Matthias F J Sperl, Juergen Hennig, Tim Klucken, Christiane Hermann, Erik M Mueller
Individual differences in long-term stability of fear memories are of potential relevance for stable dispositions related to threat processing, such as neuroticism/anxiety and fearfulness. As previous research suggests a prominent role of dopamine for the retention of conditioned and extinguished fear, dopaminergic gene polymorphisms may also relate to individual differences in fear stability. While the COMT Val158Met polymorphism causes individual differences in prefrontal dopamine, its associations with human long-term fear extinction are currently unknown...
June 5, 2018: Neurobiology of Learning and Memory
Dilip V Jeste, Susan Peschin, Kathleen Buckwalter, Dan G Blazer, Marsden H McGuire, Christine Moutier, Allen Doederlein, George Niederehe, Brian Altman, Jeff Borenstein, Elyn Saks, Grayson Norquist, George F Koob, Wilson M Compton, Andrew Sperling, Lisa Bain, Danielle Glorioso, Ilisa Halpern Paul, Charles F Reynolds
No abstract text is available yet for this article.
June 2018: American Journal of Geriatric Psychiatry
Catherine E Munro, Nancy J Donovan, Rebecca E Amariglio, Kate V Papp, Gad A Marshall, Dorene M Rentz, Alvaro Pascual-Leone, Reisa A Sperling, Joseph J Locascio, Patrizia Vannini
OBJECTIVE: To investigate the relationship of awareness of and concern about memory performance to progression from mild cognitive impairment (MCI) to Alzheimer disease (AD) dementia. METHODS: Participants (n = 33) had a diagnosis of MCI at baseline and a diagnosis of MCI or AD dementia at follow-up. Participants were categorized as "Stable-MCI" if they retained an MCI diagnosis at follow-up (mean follow-up = 18.0 months) or "Progressor-MCI" if they were diagnosed with AD dementia at follow-up (mean follow-up = 21...
May 3, 2018: American Journal of Geriatric Psychiatry
Rachel F Buckley, Elizabeth C Mormino, Rebecca E Amariglio, Michael J Properzi, Jennifer S Rabin, Yen Ying Lim, Kathryn V Papp, Heidi I L Jacobs, Samantha Burnham, Bernard J Hanseeuw, Vincent Doré, Annette Dobson, Colin L Masters, Michael Waller, Christopher C Rowe, Paul Maruff, Michael C Donohue, Dorene M Rentz, Dylan Kirn, Trey Hedden, Jasmeer Chhatwal, Aaron P Schultz, Keith A Johnson, Victor L Villemagne, Reisa A Sperling
INTRODUCTION: Our objective was to investigate the effect of sex on cognitive decline within the context of amyloid β (Aβ) burden and apolipoprotein E genotype. METHODS: We analyzed sex-specific effects on Aβ-positron emission tomography, apolipoprotein, and rates of change on the Preclinical Alzheimer Cognitive Composite-5 across three cohorts, such as the Alzheimer's Disease Neuroimaging Initiative, Australian Imaging, Biomarker and Lifestyle, and Harvard Aging Brain Study (n = 755; clinical dementia rating = 0; age (standard deviation) = 73...
May 24, 2018: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
Jennifer S Rabin, Aaron P Schultz, Trey Hedden, Anand Viswanathan, Gad A Marshall, Emily Kilpatrick, Hannah Klein, Rachel F Buckley, Hyun-Sik Yang, Michael Properzi, Vaishnavi Rao, Dylan R Kirn, Kathryn V Papp, Dorene M Rentz, Keith A Johnson, Reisa A Sperling, Jasmeer P Chhatwal
Importance: Identifying asymptomatic individuals at high risk of impending cognitive decline because of Alzheimer disease is crucial for successful prevention of dementia. Vascular risk and β-amyloid (Aβ) pathology commonly co-occur in older adults and are significant causes of cognitive impairment. Objective: To determine whether vascular risk and Aβ burden act additively or synergistically to promote cognitive decline in clinically normal older adults; and, secondarily, to evaluate the unique influence of vascular risk on prospective cognitive decline beyond that of commonly used imaging biomarkers, including Aβ burden, hippocampal volume, fludeoxyglucose F18-labeled (FDG) positron emission tomography (PET), and white matter hyperintensities, a marker of cerebrovascular disease...
May 21, 2018: JAMA Neurology
Bernard J Hanseeuw, Rebecca A Betensky, Elizabeth C Mormino, Aaron P Schultz, Jorge Sepulcre, John A Becker, Heidi I L Jacobs, Rachel F Buckley, Molly R LaPoint, Patrizia Vanini, Nancy J Donovan, Jasmeer P Chhatwal, Gad A Marshall, Kathryn V Papp, Rebecca E Amariglio, Dorene M Rentz, Reisa A Sperling, Keith A Johnson
INTRODUCTION: Amyloid PET data are commonly expressed as binary measures of cortical deposition. However, not all individuals with high cortical amyloid will experience rapid cognitive decline. Motivated by postmortem data, we evaluated a three-stage PET classification: low cortical; high cortical, low striatal; and high cortical, high striatal amyloid; hypothesizing this model could better reflect Alzheimer's dementia progression than a model based only on cortical measures. METHODS: We classified PET data from 1433 participants (646 normal, 574 mild cognitive impairment, and 213 AD), explored the successive involvement of cortex and striatum using 3-year follow-up PET data, and evaluated the associations between PET stages, hippocampal volumes, and cognition...
May 21, 2018: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
Irina Orlovsky, Willem Huijbers, Bernard J Hanseeuw, Elizabeth C Mormino, Trey Hedden, Rachel F Buckley, Molly LaPoint, Jennifer S Rabin, Dorene M Rentz, Keith A Johnson, Reisa A Sperling, Kathryn V Papp
Introduction: Alzheimer's disease (AD) patients exhibit temporally graded memory loss with remote memories remaining more intact than recent memories. It is unclear whether this temporal pattern is observable in clinically normal adults with amyloid pathology (i.e. preclinical AD). Methods: Participants were asked to recall the names of famous figures most prominent recently (famous after 1990) and remotely (famous from 1960-1980) and were provided with a phonemic cue to ensure that memory failure was not purely due to verbal retrieval weaknesses...
2018: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
Ruth C Angrand, Rhoda Sperling, Kinga Roccobono, Lauren M Osborne, Jennifer Jao
"Depression (as noted in chart by a physician)" was compared between HIV infected pregnant women and controls. Perinatally HIV-infected (PHIV), non-perinatally HIV-infected (NPHIV), and HIV-uninfected (HIV-U) pregnant women were all compared using a logistic regression model. Overall, HIV-infected women had higher rates of depression than HIV-U, with PHIV women demonstrating a clinically and statistically significant increased risk compared to HIV-U women [adjusted OR: 15.9, 95% CI = 1.8-143.8]...
May 18, 2018: AIDS Care
William M Schultz, Heval M Kelli, John C Lisko, Tina Varghese, Jia Shen, Pratik Sandesara, Arshed A Quyyumi, Herman A Taylor, Martha Gulati, John G Harold, Jennifer H Mieres, Keith C Ferdinand, George A Mensah, Laurence S Sperling
Socioeconomic status (SES) has a measurable and significant effect on cardiovascular health. Biological, behavioral, and psychosocial risk factors prevalent in disadvantaged individuals accentuate the link between SES and cardiovascular disease (CVD). Four measures have been consistently associated with CVD in high-income countries: income level, educational attainment, employment status, and neighborhood socioeconomic factors. In addition, disparities based on sex have been shown in several studies. Interventions targeting patients with low SES have predominantly focused on modification of traditional CVD risk factors...
May 15, 2018: Circulation
Seonjoo Lee, Molly E Zimmerman, Atul Narkhede, Sara E Nasrabady, Giuseppe Tosto, Irene B Meier, Tammie L S Benzinger, Daniel S Marcus, Anne M Fagan, Nick C Fox, Nigel J Cairns, David M Holtzman, Virginia Buckles, Bernardino Ghetti, Eric McDade, Ralph N Martins, Andrew J Saykin, Colin L Masters, John M Ringman, Stefan Fӧrster, Peter R Schofield, Reisa A Sperling, Keith A Johnson, Jasmeer P Chhatwal, Stephen Salloway, Stephen Correia, Clifford R Jack, Michael Weiner, Randall J Bateman, John C Morris, Richard Mayeux, Adam M Brickman
INTRODUCTION: White matter hyperintensity (WMH) volume on MRI is increased among presymptomatic individuals with autosomal dominant mutations for Alzheimer's disease (AD). One potential explanation is that WMH, conventionally considered a marker of cerebrovascular disease, are a reflection of cerebral amyloid angiopathy (CAA) and that increased WMH in this population is a manifestation of this vascular form of primary AD pathology. We examined whether the presence of cerebral microbleeds, a marker of CAA, mediates the relationship between WMH and estimated symptom onset in individuals with and without autosomal dominant mutations for AD...
2018: PloS One
J Sperling, A Eckstein, W R Clements, M Moore, J J Renema, W S Kolthammer, S W Nam, A Lita, T Gerrits, I A Walmsley, G S Agarwal, W Vogel
In Sperling et al. [Phys. Rev. Lett. 118 , 163602 (2017)], we introduced and applied a detector-independent method to uncover nonclassicality. Here, we extend those techniques and give more details on the performed analysis. We derive a general theory of the positive-operator-valued measure that describes multiplexing layouts with arbitrary detectors. From the resulting quantum version of a multinomial statistics, we infer nonclassicality probes based on a matrix of normally ordered moments. We discuss these criteria and apply the theory to our data which are measured with superconducting transition-edge sensors...
July 2017: Physical Review. A
Christopher M Lee, Heidi I L Jacobs, Marta Marquié, John A Becker, Nicolas V Andrea, David S Jin, Aaron P Schultz, Matthew P Frosch, Teresa Gómez-Isla, Reisa A Sperling, Keith A Johnson
BACKGROUND: On target 18F-Flortaucipir (FTP) binding of Alzheimer's disease tau aggregates and off-target binding of melanocytes have been demonstrated with autoradiography. OBJECTIVE: We aimed to investigate the hypothesis that if binding in choroid plexus (CP) is due to melanocytes, the signal would be elevated in Black/African American (B/AA) compared to White (W) participants. In addition, we examined whether CP signal affects measurements in adjacent regions, and whether correcting for spill-in effects has an influence on associations between hippocampus (HC) FTP and amyloid or cognition...
2018: Journal of Alzheimer's Disease: JAD
Daniel M Goldenholz, Robert Moss, David A Jost, Nathan E Crone, Gregory Krauss, Rosalind Picard, Chiara Caborni, Jose E Cavazos, John Hixson, Tobias Loddenkemper, Tracy Dixon Salazar, Laura Lubbers, Lauren C Harte-Hargrove, Vicky Whittemore, Jonas Duun-Henriksen, Eric Dolan, Nitish Kasturia, Mark Oberemk, Mark J Cook, Mark Lehmkuhle, Michael R Sperling, Patricia O Shafer
OBJECTIVE: Common data elements (CDEs) are currently unavailable for mobile health (mHealth) in epilepsy devices and related applications. As a result, despite expansive growth of new digital services for people with epilepsy, information collected is often not interoperable or directly comparable. We aim to correct this problem through development of industry-wide standards for mHealth epilepsy data. METHODS: Using a group of stakeholders from industry, academia, and patient advocacy organizations, we offer a consensus statement for the elements that may facilitate communication among different systems...
May 2018: Epilepsia
Anja Joachim, Aruna Shrestha, Barbara Freudenschuss, Nicola Palmieri, Barbara Hinney, Hamadi Karembe, Daniel Sperling
BACKGROUND: Cystoisospora suis causes diarrhoeal disease and reduced weight gain in suckling piglets, and a toltrazuril-based oral suspension is available for treatment. Recently a combinatorial product with toltrazuril plus iron has been developed for parenteral application. In this study we compared the efficacy of the injectable product with the oral suspension against experimentally induced piglet cystoisosporosis. METHODS: In a randomised controlled study, three groups of piglets (n = 10-13) were treated either with a fixed dose of 45 mg toltrazuril + 200 mg gleptoferron i...
March 27, 2018: Parasites & Vectors
Thatjana Gardeitchik, Miski Mohamed, Benedetta Ruzzenente, Daniela Karall, Sergio Guerrero-Castillo, Daisy Dalloyaux, Mariël van den Brand, Sanne van Kraaij, Ellyze van Asbeck, Zahra Assouline, Marlene Rio, Pascale de Lonlay, Sabine Scholl-Buergi, David F G J Wolthuis, Alexander Hoischen, Richard J Rodenburg, Wolfgang Sperl, Zsolt Urban, Ulrich Brandt, Johannes A Mayr, Sunnie Wong, Arjan P M de Brouwer, Leo Nijtmans, Arnold Munnich, Agnès Rötig, Ron A Wevers, Metodi D Metodiev, Eva Morava
Biogenesis of the mitochondrial oxidative phosphorylation system, which produces the bulk of ATP for almost all eukaryotic cells, depends on the translation of 13 mtDNA-encoded polypeptides by mitochondria-specific ribosomes in the mitochondrial matrix. These mitoribosomes are dual-origin ribonucleoprotein complexes, which contain mtDNA-encoded rRNAs and tRNAs and ∼80 nucleus-encoded proteins. An increasing number of gene mutations that impair mitoribosomal function and result in multiple OXPHOS deficiencies are being linked to human mitochondrial diseases...
April 5, 2018: American Journal of Human Genetics
Joseph M Statz, Eric R Wagner, John W Sperling, Robert H Cofield
PURPOSE: Although diabetes mellitus (DM) has an adverse effect on complication rates in orthopaedic surgery, neither the effect of DM nor the association between haemoglobin A1C (HbA1C) and outcomes after shoulder arthroplasty (SA) has been studied. METHODS: A retrospective review of 406 SAs (70 HAs, 188 total shoulder arthroplasties [TSAs], 148 reverse total shoulder arthroplasties [RSAs]) with HbA1Cs within 90 days of surgery was conducted. The average age was 70 years (range 27-97) and 55% were female...
March 18, 2018: International Orthopaedics
Susanne Regus, Veronika Almási-Sperling, Rolf Janka, Ulrich Rother, Michael Lell, Alexander Meyer, Werner Lang
OBJECTIVES: Endofibrosis was first described in endurance athletes. This rare disease is characterized by intimal hyperplasia of iliac arteries. Due to non-specific symptoms diagnosing could be very challenging and delayed. This represents a serious problem not only for affected athletes but also for consulting physicians. The aim of this study was to analyze intimal thickness of iliac arteries using non-contrast magnetic resonance imaging (MRI) in competitive triathletes suffering from exercise induced leg pain consistent with symptoms caused by endofibrosis...
March 20, 2018: Physician and Sportsmedicine
Jasmeer P Chhatwal, Aaron P Schultz, Keith A Johnson, Trey Hedden, Sehily Jaimes, Tammie L S Benzinger, Clifford Jack, Beau M Ances, John M Ringman, Daniel S Marcus, Bernardino Ghetti, Martin R Farlow, Adrian Danek, Johannes Levin, Igor Yakushev, Christoph Laske, Robert A Koeppe, Douglas R Galasko, Chengjie Xiong, Colin L Masters, Peter R Schofield, Kirsi M Kinnunen, Stephen Salloway, Ralph N Martins, Eric McDade, Nigel J Cairns, Virginia D Buckles, John C Morris, Randall Bateman, Reisa A Sperling
Converging evidence from structural, metabolic and functional connectivity MRI suggests that neurodegenerative diseases, such as Alzheimer's disease, target specific neural networks. However, age-related network changes commonly co-occur with neuropathological cascades, limiting efforts to disentangle disease-specific alterations in network function from those associated with normal ageing. Here we elucidate the differential effects of ageing and Alzheimer's disease pathology through simultaneous analyses of two functional connectivity MRI datasets: (i) young participants harbouring highly-penetrant mutations leading to autosomal-dominant Alzheimer's disease from the Dominantly Inherited Alzheimer's Network (DIAN), an Alzheimer's disease cohort in which age-related comorbidities are minimal and likelihood of progression along an Alzheimer's disease trajectory is extremely high; and (ii) young and elderly participants from the Harvard Aging Brain Study, a cohort in which imaging biomarkers of amyloid burden and neurodegeneration can be used to disambiguate ageing alone from preclinical Alzheimer's disease...
May 1, 2018: Brain: a Journal of Neurology
D Raben, M Hoekstra, I Sperle, A J Amato Gauci, C Gauci, B West, A Sullivan, J V Lazarus, T Platteau, J K Rockstroh
OBJECTIVES: The objective of the article is to provide an overview of the results of the HepHIV 2017 Conference organized by the HIV in Europe initiative under the Maltese EU Presidency in January 2017. METHODS: A thourough review of all conference presentations (oral and poster presentations) was performed to retrieve the key outcomes of the conference. RESULTS: The key result from the conference was a call to action summarising key priorities in HIV and viral hepatitis testing and linkage to care...
February 2018: HIV Medicine
M Bohmann, J Tiedau, T Bartley, J Sperling, C Silberhorn, W Vogel
We implement the direct sampling of negative phase-space functions via unbalanced homodyne measurement using click-counting detectors. The negativities significantly certify nonclassical light in the high-loss regime using a small number of detectors which cannot resolve individual photons. We apply our method to heralded single-photon states and experimentally demonstrate the most significant certification of nonclassicality for only two detection bins. By contrast, the frequently applied Wigner function fails to directly indicate such quantum characteristics for the quantum efficiencies present in our setup without applying additional reconstruction algorithms...
February 9, 2018: Physical Review Letters
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