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https://www.readbyqxmd.com/read/28931619/spinal-arteriolosclerosis-is-common-in-older-adults-and-associated-with-parkinsonism
#1
Aron S Buchman, Sue E Leurgans, Sukriti Nag, Veronique G J M VanderHorst, Alifiya Kapasi, Julie A Schneider, David A Bennett
BACKGROUND AND PURPOSE: There are few studies of spinal microvascular pathologies in older adults. We characterized spinal cord microvascular pathologies and examined their associations with other spinal and brain postmortem indices and parkinsonism in older adults. METHODS: We documented 3 features of microvascular pathologies in spinal cord and brain specimens from 165 deceased older participants. We also measured spinal white matter pallor. Parkinsonian signs were assessed with a modified version of the motor section of the Unified Parkinson's Disease Rating Scale...
September 20, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28930778/radioprotection-with-amifostine-enhances-bone-strength-and-regeneration-and-bony-union-in-a-rat-model-of-mandibular-distraction-osteogenesis
#2
Catherine N Tchanque-Fossuo, Alexis Donneys, Sagar S Deshpande, Deniz Sarhaddi, Noah S Nelson, Laura A Monson, Sara E Dahle, Steve A Goldstein, Steven R Buchman
BACKGROUND: Using distraction osteogenesis (DO) to regenerate robust endogenous bone could greatly enhance postoncologic reconstruction of head and neck cancer. However, radiation (XRT) corrosive effects still preclude DO's immense potential. We posit that adjunctive pretreatment with the radioprotectant amifostine (AMF) can optimize wound healing and allow for successful DO with quantifiable enhancements in bony union and strength despite previous surgical bed irradiation. METHODS: Two groups of murine left hemimandibles were exposed to a human equivalent radiation dosage fractionated over 5 daily doses of 7 Gy...
September 19, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28925929/canadian-guidelines-for-controlled-pediatric-donation-after-circulatory-determination-of-death-summary-report
#3
Matthew J Weiss, Laura Hornby, Bram Rochwerg, Michael van Manen, Sonny Dhanani, V Ben Sivarajan, Amber Appleby, Mary Bennett, Daniel Buchman, Catherine Farrell, Aviva Goldberg, Rebecca Greenberg, Ram Singh, Thomas A Nakagawa, William Witteman, Jill Barter, Allon Beck, Kevin Coughlin, Alf Conradi, Cynthia Cupido, Rosanne Dawson, Anne Dipchand, Darren Freed, Karen Hornby, Valerie Langlois, Cheryl Mack, Meagan Mahoney, Deepak Manhas, Christopher Tomlinson, Samara Zavalkoff, Sam D Shemie
OBJECTIVES: Create trustworthy, rigorous, national clinical practice guidelines for the practice of pediatric donation after circulatory determination of death in Canada. METHODS: We followed a process of clinical practice guideline development based on World Health Organization and Canadian Medical Association methods. This included application of Grading of Recommendations Assessment, Development, and Evaluation methodology. Questions requiring recommendations were generated based on 1) 2006 Canadian donation after circulatory determination of death guidelines (not pediatric specific), 2) a multidisciplinary symposium of national and international pediatric donation after circulatory determination of death leaders, and 3) a scoping review of the pediatric donation after circulatory determination of death literature...
September 15, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28906286/serial-daily-organ-failure-assessment-beyond-icu-day-5-does-not-independently-add-precision-to-icu-risk-of-death-prediction
#4
Andre L Holder, Elizabeth Overton, Peter Lyu, Jordan A Kempker, Shamim Nemati, Fereshteh Razmi, Greg S Martin, Timothy G Buchman, David J Murphy
OBJECTIVES: To identify circumstances in which repeated measures of organ failure would improve mortality prediction in ICU patients. DESIGN: Retrospective cohort study, with external validation in a deidentified ICU database. SETTING: Eleven ICUs in three university hospitals within an academic healthcare system in 2014. PATIENTS: Adults (18 yr old or older) who satisfied the following criteria: 1) two of four systemic inflammatory response syndrome criteria plus an ordered blood culture, all within 24 hours of hospital admission; and 2) ICU admission for at least 2 calendar days, within 72 hours of emergency department presentation...
September 12, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28902802/audiological-outcomes-and-map-characteristics-in-children-with-perimodiolar-and-slim-straight-array-cochlear-implants-in-opposite-ears
#5
Lisa R Park, Holly F B Teagle, Kevin D Brown, Erika B Gagnon, Jennifer S Woodard, Craig A Buchman
OBJECTIVE: To identify differences in outcomes and map characteristics in pediatric bilateral cochlear implants with modiolar conforming and lateral wall arrays in opposite ears. STUDY DESIGN: Retrospective case series. SETTING: Tertiary care pediatric referral center. PATIENTS: Fourteen children who received a perimodiolar array in one ear and a slim straight array in the opposite ear in sequential surgeries. INTERVENTIONS: None...
October 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28891823/longitudinal-changes-in-electrically-evoked-auditory-event-related-potentials-in-children-with-auditory-brainstem-implants-preliminary-results-recorded-over-3-years
#6
Shuman He, Holly F B Teagle, Tyler C McFayden, Matthew Ewend, Lillian Henderson, Nancy He, Craig A Buchman
OBJECTIVES: This preliminary study aimed (1) to assess longitudinal changes in electrically evoked auditory event-related potentials (eERPs) in children with auditory brainstem implants (ABIs) and (2) to explore whether these changes could be accounted for by maturation in the central auditory system of these patients. DESIGN: Study participants included 5 children (S1 to S5) with an ABI in the affected ear. The stimulus was a train of electrical pulses delivered to individual ABI electrodes via a research interface...
September 7, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28860127/the-haptoglobin-1-1-genotype-modulates-the-association-of-glycemic-control-with-hippocampal-volume-in-elderly-with-type-2-diabetes
#7
Abigail Livny, Ramit Ravona-Springer, Anthony Heymann, Rachel Priess, Tammar Kushnir, Galia Tsarfaty, Leeron Rabinov, Reut Moran, Niv Tik, Erin Moshier, Itzik Cooper, Lior Greenbaum, Jeremy Silverman, Andrew Levy, Mary Sano, Barbara B Bendlin, Aron S Buchman, Michal Schnaider Beeri
Recent evidence suggests that glycemic control is associated with cognitive function in older patients with type 2 diabetes (T2D) carriers of Haptoglobin (Hp) 1-1 genotype compared to non-carriers. We assessed whether poor glycemic control in Hp 1-1 carriers is more strongly associated with smaller hippocampal volume than in non-carriers.Hippocampal volume was generated from high-resolution structural T1 MR-imaging obtained for 224 participants (28 Hp 1-1 carriers [12.5%] and 196 non-carriers [87.5%]) from the Israel Diabetes and Cognitive Decline study, who had a mean number of years in the MHS registry of 8...
August 31, 2017: Diabetes
https://www.readbyqxmd.com/read/28769753/intraoperative-electrocochleographic-characteristics-of-auditory-neuropathy-spectrum-disorder-in-cochlear-implant-subjects
#8
William J Riggs, Joseph P Roche, Christopher K Giardina, Michael S Harris, Zachary J Bastian, Tatyana E Fontenot, Craig A Buchman, Kevin D Brown, Oliver F Adunka, Douglas C Fitzpatrick
Auditory neuropathy spectrum disorder (ANSD) is characterized by an apparent discrepancy between measures of cochlear and neural function based on auditory brainstem response (ABR) testing. Clinical indicators of ANSD are a present cochlear microphonic (CM) with small or absent wave V. Many identified ANSD patients have speech impairment severe enough that cochlear implantation (CI) is indicated. To better understand the cochleae identified with ANSD that lead to a CI, we performed intraoperative round window electrocochleography (ECochG) to tone bursts in children (n = 167) and adults (n = 163)...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28746286/harvesting-the-buccal-fat-pad-does-not-result-in-aesthetic-deformity-in-cleft-patients-a-retrospective-analysis
#9
Katelyn G Bennett, Todd E Thurston, Christian J Vercler, Steven J Kasten, Steven R Buchman
BACKGROUND: Buccal fat is often used as a pedicled flap in cleft palate repairs to minimize scarring and fortify tenuous closures. Although many surgeons have adopted this technique, others have remained circumspect because of the concern for subsequent facial asymmetry. METHODS: Patients who underwent cleft palate repair using buccal fat pad flaps for closure between 2007 and 2015 were reviewed. Only patients with unilateral buccal fat pad flaps and three-dimensional photography were included...
August 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28724990/large-meta-analysis-of-genome-wide-association-studies-identifies-five-loci-for-lean-body-mass
#10
M Carola Zillikens, Serkalem Demissie, Yi-Hsiang Hsu, Laura M Yerges-Armstrong, Wen-Chi Chou, Lisette Stolk, Gregory Livshits, Linda Broer, Toby Johnson, Daniel L Koller, Zoltán Kutalik, Jian'an Luan, Ida Malkin, Janina S Ried, Albert V Smith, Gudmar Thorleifsson, Liesbeth Vandenput, Jing Hua Zhao, Weihua Zhang, Ali Aghdassi, Kristina Åkesson, Najaf Amin, Leslie J Baier, Inês Barroso, David A Bennett, Lars Bertram, Rainer Biffar, Murielle Bochud, Michael Boehnke, Ingrid B Borecki, Aron S Buchman, Liisa Byberg, Harry Campbell, Natalia Campos Obanda, Jane A Cauley, Peggy M Cawthon, Henna Cederberg, Zhao Chen, Nam H Cho, Hyung Jin Choi, Melina Claussnitzer, Francis Collins, Steven R Cummings, Philip L De Jager, Ilja Demuth, Rosalie A M Dhonukshe-Rutten, Luda Diatchenko, Gudny Eiriksdottir, Anke W Enneman, Mike Erdos, Johan G Eriksson, Joel Eriksson, Karol Estrada, Daniel S Evans, Mary F Feitosa, Mao Fu, Melissa Garcia, Christian Gieger, Thomas Girke, Nicole L Glazer, Harald Grallert, Jagvir Grewal, Bok-Ghee Han, Robert L Hanson, Caroline Hayward, Albert Hofman, Eric P Hoffman, Georg Homuth, Wen-Chi Hsueh, Monica J Hubal, Alan Hubbard, Kim M Huffman, Lise B Husted, Thomas Illig, Erik Ingelsson, Till Ittermann, John-Olov Jansson, Joanne M Jordan, Antti Jula, Magnus Karlsson, Kay-Tee Khaw, Tuomas O Kilpeläinen, Norman Klopp, Jacqueline S L Kloth, Heikki A Koistinen, William E Kraus, Stephen Kritchevsky, Teemu Kuulasmaa, Johanna Kuusisto, Markku Laakso, Jari Lahti, Thomas Lang, Bente L Langdahl, Lenore J Launer, Jong-Young Lee, Markus M Lerch, Joshua R Lewis, Lars Lind, Cecilia Lindgren, Yongmei Liu, Tian Liu, Youfang Liu, Östen Ljunggren, Mattias Lorentzon, Robert N Luben, William Maixner, Fiona E McGuigan, Carolina Medina-Gomez, Thomas Meitinger, Håkan Melhus, Dan Mellström, Simon Melov, Karl Michaëlsson, Braxton D Mitchell, Andrew P Morris, Leif Mosekilde, Anne Newman, Carrie M Nielson, Jeffrey R O'Connell, Ben A Oostra, Eric S Orwoll, Aarno Palotie, Stephan Parker, Munro Peacock, Markus Perola, Annette Peters, Ozren Polasek, Richard L Prince, Katri Räikkönen, Stuart H Ralston, Samuli Ripatti, John A Robbins, Jerome I Rotter, Igor Rudan, Veikko Salomaa, Suzanne Satterfield, Eric E Schadt, Sabine Schipf, Laura Scott, Joban Sehmi, Jian Shen, Chan Soo Shin, Gunnar Sigurdsson, Shad Smith, Nicole Soranzo, Alena Stančáková, Elisabeth Steinhagen-Thiessen, Elizabeth A Streeten, Unnur Styrkarsdottir, Karin M A Swart, Sian-Tsung Tan, Mark A Tarnopolsky, Patricia Thompson, Cynthia A Thomson, Unnur Thorsteinsdottir, Emmi Tikkanen, Gregory J Tranah, Jaakko Tuomilehto, Natasja M van Schoor, Arjun Verma, Peter Vollenweider, Henry Völzke, Jean Wactawski-Wende, Mark Walker, Michael N Weedon, Ryan Welch, H-Erich Wichman, Elisabeth Widen, Frances M K Williams, James F Wilson, Nicole C Wright, Weijia Xie, Lei Yu, Yanhua Zhou, John C Chambers, Angela Döring, Cornelia M van Duijn, Michael J Econs, Vilmundur Gudnason, Jaspal S Kooner, Bruce M Psaty, Timothy D Spector, Kari Stefansson, Fernando Rivadeneira, André G Uitterlinden, Nicholas J Wareham, Vicky Ossowski, Dawn Waterworth, Ruth J F Loos, David Karasik, Tamara B Harris, Claes Ohlsson, Douglas P Kiel
Lean body mass, consisting mostly of skeletal muscle, is important for healthy aging. We performed a genome-wide association study for whole body (20 cohorts of European ancestry with n = 38,292) and appendicular (arms and legs) lean body mass (n = 28,330) measured using dual energy X-ray absorptiometry or bioelectrical impedance analysis, adjusted for sex, age, height, and fat mass. Twenty-one single-nucleotide polymorphisms were significantly associated with lean body mass either genome wide (p < 5 × 10(-8)) or suggestively genome wide (p < 2...
July 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28696945/correction-the-complex-genetics-of-gait-speed-genome-wide-meta-analysis-approach
#11
Dan Ben-Avraham, David Karasik, Joe Verghese, Kathryn L Lunetta, Jennifer A Smith, John D Eicher, Rotem Vered, Joris Deelen, Alice M Arnold, Aron S Buchman, Toshiko Tanaka, Jessica D Faul, Maria Nethander, Myriam Fornage, Hieab H Adams, Amy M Matteini, Michele L Callisaya, Albert V Smith, Lei Yu, Philip L De Jager, Denis A Evans, Vilmundur Gudnason, Albert Hofman, Alison Pattie, Janie Corley, Lenore J Launer, Davis S Knopman, Neeta Parimi, Stephen T Turner, Stefania Bandinelli, Marian Beekman, Danielle Gutman, Lital Sharvit, Simon P Mooijaart, David C Liewald, Jeanine J Houwing-Duistermaat, Claes Ohlsson, Matthijs Moed, Vincent J Verlinden, Dan Mellström, Jos N van der Geest, Magnus Karlsson, Dena Hernandez, Rebekah McWhirter, Yongmei Liu, Russell Thomson, Gregory J Tranah, Andre G Uitterlinden, David R Weir, Wei Zhao, John M Starr, Andrew D Johnson, M Arfan Ikram, David A Bennett, Steven R Cummings, Ian J Deary, Tamara B Harris, Sharon L R Kardia, Thomas H Mosley, Velandai K Srikanth, Beverly G Windham, Ann B Newman, Jeremy D Walston, Gail Davies, Daniel S Evans, Eline P Slagboom, Luigi Ferrucci, Douglas P Kiel, Joanne M Murabito, Gil Atzmon
No abstract text is available yet for this article.
July 7, 2017: Aging
https://www.readbyqxmd.com/read/28690494/the-electrically-evoked-compound-action-potential-from-laboratory-to-clinic
#12
REVIEW
Shuman He, Holly F B Teagle, Craig A Buchman
The electrically evoked compound action potential (eCAP) represents the synchronous firing of a population of electrically stimulated auditory nerve fibers. It can be directly recorded on a surgically exposed nerve trunk in animals or from an intra-cochlear electrode of a cochlear implant. In the past two decades, the eCAP has been widely recorded in both animals and clinical patient populations using different testing paradigms. This paper provides an overview of recording methodologies and response characteristics of the eCAP, as well as its potential applications in research and clinical situations...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28688553/clinical-role-of-electrocochleography-in-children-with-auditory-neuropathy-spectrum-disorder
#13
Tatyana E Fontenot, Christopher K Giardina, Holly F Teagle, Lisa R Park, Oliver F Adunka, Craig A Buchman, Kevin D Brown, Douglas C Fitzpatrick
OBJECTIVES: To assess electrocochleography (ECochG) to tones as an instrument to account for CI speech perception outcomes in children with auditory neuropathy spectrum disorder (ANSD). MATERIALS & METHODS: Children (<18 years) receiving CIs for ANSD (n = 30) and non-ANSD (n = 74) etiologies of hearing loss were evaluated with ECochG using tone bursts (0.25-4 kHz). The total response (TR) is the sum of spectral peaks of responses across frequencies. The compound action potential (CAP) and the auditory nerve neurophonic (ANN) in ECochG waveforms were used to estimate nerve activity and calculate nerve score...
August 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28685838/do-undiagnosed-suicide-decedents-have-symptoms-of-a-mental-disorder
#14
Thomas E Joiner, Jennifer M Buchman-Schmitt, Carol Chu
BACKGROUND: Psychological autopsy studies consistently report that the rate of detected mental disorders among suicide decedents is below 100%. This implies three possibilities: (a) a subset of suicide decedents did not have a mental disorder at the time of death; (b) all suicide decedents suffered from a mental disorder, but some were undetected due to methodological limitations; and/or (c) suicide decedents with an undetected mental disorder displayed significant and perhaps subclinical features of a mental disorder...
July 7, 2017: Journal of Clinical Psychology
https://www.readbyqxmd.com/read/28675860/the-role-of-stressful-life-events-preceding-death-by-suicide-evidence-from-two-samples-of-suicide-decedents
#15
Jennifer M Buchman-Schmitt, Carol Chu, Matthew S Michaels, Jennifer L Hames, Caroline Silva, Christopher R Hagan, Jessica D Ribeiro, Edward A Selby, Thomas E Joiner
Stressful life events (SLEs) are associated with increased risk for suicidal behavior. Less is known regarding the intensity of SLEs and how this may vary as a function of suicide attempt history. As a large percentage of suicide decedents do not have a history of suicidal behavior, SLEs precipitating suicide may help characterize suicidality in this understudied population. This paper examines the intensity, number, and accumulation of SLEs preceding death by suicide among decedents with varying suicide attempt histories...
October 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28665843/speech-perceptions-and-health-related-quality-of-life-among-children-with-cleft-lip-and-palate
#16
Rebecca S Bickham, Kavitha Ranganathan, Natalie R Wombacher, Danielle N Shapiro, Noelle E Carlozzi, Michaella K Baker, Christian J Vercler, Seth A Warschausky, Steven R Buchman, Jennifer F Waljee
BACKGROUND: The association between perception of speech and health-related quality of life (HRQOL) among patients with cleft palate is not well understood. The purpose of this study was to determine: the agreement between patient and parent perception of speech, the correlation between patient/parent speech perception and objective analysis by a speech-language pathologist (SLP), and the relationship between objective speech analysis and HRQOL among children with cleft lip with or without palate (CLCP)...
June 29, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28653052/assessment-of-gingival-symmetry-with-digital-measuring-tools-and-its-reproducibility
#17
David Wilson, Kristi Soileau, Jonathan Esquivel, Adriana Cordero, Wes Buchman, Pooja Maney, A Archontia Palaiologou
OBJECTIVE: The aim of this study was to investigate the accuracy of digital measuring tools to measure the position of gingival zeniths and to assess its reproducibility between different examiners. MATERIALS AND METHODS: A total of 108 subjects were photographed at the Louisiana State University School of Dentistry. The settings, positioning of the digital camera, and subjects' Frankfurt levels were standardized. A photograph was taken of the six anterior maxillary teeth of each subject, and their corresponding free gingival margins...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28630470/overcoming-evolved-resistance-to-population-suppressing-homing-based-gene-drives
#18
John M Marshall, Anna Buchman, Héctor M Sánchez C, Omar S Akbari
The recent development of a CRISPR-Cas9-based homing system for the suppression of Anopheles gambiae is encouraging; however, with current designs, the slow emergence of homing-resistant alleles is expected to result in suppressed populations rapidly rebounding, as homing-resistant alleles have a significant fitness advantage over functional, population-suppressing homing alleles. To explore this concern, we develop a mathematical model to estimate tolerable rates of homing-resistant allele generation to suppress a wild population of a given size...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28630030/alzheimer-s-brains-show-inter-related-changes-in-rna-and-lipid-metabolism
#19
Shahar Barbash, Benjamin P Garfinkel, Rotem Maoz, Alon Simchovitz, Bettina Nadorp, Alessandro Guffanti, Estelle R Bennett, Courtney Nadeau, Andreas Türk, Lukas Paul, Torsten Reda, Yan Li, Aron S Buchman, David S Greenberg, Alexander Seitz, David A Bennett, Patrick Giavalisco, Hermona Soreq
Alzheimer's disease (AD) involves changes in both lipid and RNA metabolism, but it remained unknown if these differences associate with AD's cognition and/or post-mortem neuropathology indices. Here, we report RNA-sequencing evidence of inter-related associations between lipid processing, cognition level, and AD neuropathology. In two unrelated cohorts, we identified pathway-enriched facilitation of lipid processing and alternative splicing genes, including the neuronal-enriched NOVA1 and hnRNPA1. Specifically, this association emerged in temporal lobe tissue samples from donors where postmortem evidence demonstrated AD neuropathology, but who presented normal cognition proximate to death...
October 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28607434/a-translational-approach-to-capture-gait-signatures-of-neurological-disorders-in-mice-and-humans
#20
Lauren Broom, Brian A Ellison, Audrey Worley, Lara Wagenaar, Elina Sörberg, Christine Ashton, David A Bennett, Aron S Buchman, Clifford B Saper, Ludy C Shih, Jeffrey M Hausdorff, Veronique G VanderHorst
A method for capturing gait signatures in neurological conditions that allows comparison of human gait with animal models would be of great value in translational research. However, the velocity dependence of gait parameters and differences between quadruped and biped gait have made this comparison challenging. Here we present an approach that accounts for changes in velocity during walking and allows for translation across species. In mice, we represented spatial and temporal gait parameters as a function of velocity and established regression models that reproducibly capture the signatures of these relationships during walking...
June 12, 2017: Scientific Reports
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