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2021

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Meta-Analyses Of Deflazacort Versus Prednisone/Prednisolone In Patients With Nonsense Mutation Duchenne Muscular Dystrophy, Perry B. Shieh, Gary Elfring, Panayiota Trifillis, Claudio Santos, Stuart W. Peltz, Julie A. Parsons, Susan Apkon, Basil T. Darras Dec 2021

Meta-Analyses Of Deflazacort Versus Prednisone/Prednisolone In Patients With Nonsense Mutation Duchenne Muscular Dystrophy, Perry B. Shieh, Gary Elfring, Panayiota Trifillis, Claudio Santos, Stuart W. Peltz, Julie A. Parsons, Susan Apkon, Basil T. Darras

Paediatrics Publications

Aim: Compare efficacies of deflazacort and prednisone/prednisolone in providing clinically meaningful delays in loss of physical milestones in patients with nonsense mutation Duchenne muscular dystrophy. Materials & methods: Placebo data from Phase IIb (ClinicalTrials.gov Identifier: NCT00592553) and ACT DMD (ClinicalTrials.gov Identifier: NCT01826487) ataluren nonsense mutation Duchenne muscular dystrophy clinical trials were retrospectively combined in meta-analyses (intent-to-treat population; for change from baseline to week 48 in 6-min walk distance [6MWD] and timed function tests). Results: Significant improvements in change in 6-min walk distance with deflazacort versus prednisone/prednisolone (least-squares mean difference 39.54 m [95% CI: 13.799, 65.286; p = 0.0026]). Significant and …

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Ontology Of The Apelinergic System In Mouse Pancreas During Pregnancy And Relationship With Β-Cell Mass, Brenda Strutt, Sandra Szlapinski, Thineesha Gnaneswaran, Sarah Donegan, Jessica Hill, Jamie Bennett, David J. Hill Dec 2021

Ontology Of The Apelinergic System In Mouse Pancreas During Pregnancy And Relationship With Β-Cell Mass, Brenda Strutt, Sandra Szlapinski, Thineesha Gnaneswaran, Sarah Donegan, Jessica Hill, Jamie Bennett, David J. Hill

Paediatrics Publications

The apelin receptor (Aplnr) and its ligands, Apelin and Apela, contribute to metabolic control. The insulin resistance associated with pregnancy is accommodated by an expansion of pancreatic β-cell mass (BCM) and increased insulin secretion, involving the proliferation of insulin-expressing, glucose transporter 2-low (Ins+Glut2LO) progenitor cells. We examined changes in the apelinergic system during normal mouse pregnancy and in pregnancies complicated by glucose intolerance with reduced BCM. Expression of Aplnr, Apelin and Apela was quantified in Ins+Glut2LO cells isolated from mouse pancreata and found to be significantly higher than in mature β-cells by DNA microarray and qPCR. Apelin was localized to …

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Osteoporotic Fractures And Vertebral Body Reshaping In Children With Glucocorticoid-Treated Rheumatic Disorders, Leanne M. Ward, Jinhui Ma, Marie Eve Robinson, Maya Scharke, Josephine Ho, Kristin Houghton, Adam Huber, Rosie Scuccimarri, Julie Barsalou, Johannes Roth, Nazih Shenouda, Mary Ann Matzinger, Brian Lentle, Jacob L. Jaremko, Khaldoun Koujok, Karen Watanabe Duffy, Robert Stein, Anne Marie Sbrocchi, Celia Rodd, Paivi M. Miettunen, Claire M.A. Leblanc, Maggie Larche, Roman Jurencak, Elizabeth A. Cummings, Robert Couch, David A. Cabral Dec 2021

Osteoporotic Fractures And Vertebral Body Reshaping In Children With Glucocorticoid-Treated Rheumatic Disorders, Leanne M. Ward, Jinhui Ma, Marie Eve Robinson, Maya Scharke, Josephine Ho, Kristin Houghton, Adam Huber, Rosie Scuccimarri, Julie Barsalou, Johannes Roth, Nazih Shenouda, Mary Ann Matzinger, Brian Lentle, Jacob L. Jaremko, Khaldoun Koujok, Karen Watanabe Duffy, Robert Stein, Anne Marie Sbrocchi, Celia Rodd, Paivi M. Miettunen, Claire M.A. Leblanc, Maggie Larche, Roman Jurencak, Elizabeth A. Cummings, Robert Couch, David A. Cabral

Paediatrics Publications

Context: Osteoporotic fractures are an important cause of morbidity in children with glucocorticoid-treated rheumatic disorders. Objective: This work aims to evaluate the incidence and predictors of osteoporotic fractures and potential for recovery over six years following glucocorticoid (GC) initiation in children with rheumatic disorders. Methods: Children with GC-treated rheumatic disorders were evaluated through a prospective inception cohort study led by the Canadian STeroid-induced Osteoporosis in the Pediatric Population (STOPP) Consortium. Clinical outcomes included lumbar spine bone mineral density (LS BMD), vertebral fractures (VF), non-VF, and vertebral body reshaping. Results: A total of 136 children with GC-treated rheumatic disorders were enrolled …

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Parents’ Report Of Canadian Elementary School Children’S Physical Activity And Screen Time During The Covid-19 Pandemic: A Longitudinal Study, Emma Ostermeier, Patricia Tucker, Andrew Clark, Jamie A. Seabrook, Jason Gilliland Dec 2021

Parents’ Report Of Canadian Elementary School Children’S Physical Activity And Screen Time During The Covid-19 Pandemic: A Longitudinal Study, Emma Ostermeier, Patricia Tucker, Andrew Clark, Jamie A. Seabrook, Jason Gilliland

Paediatrics Publications

COVID-19 public health protocols have altered children’s daily routines, limiting their physical activity opportunities. The purpose of this study was to examine how the COVID-19 pandemic affected children’s (ages 10–12 years) physical activity and screen time, and to explore the impact of gender, socioeconomic status (SES), and public health constraints (i.e., facility use and social interaction) on the changes in children’s health behaviors. Online surveys were disseminated to parents at two time points: before COVID-19 (May 2019 to February 2020) and during COVID-19 (November to December 2020). Wilcoxon signed-rank tests were used to assess changes in physical activity and screen …

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Rapid Standardized Operating Rooms (Rapstor) In Thyroid And Parathyroid Surgery, Hannah Ernst, Leigh Sowerby, Axel Sahovaler, Danielle Macneil, Anthony Nichols, John Yoo, Richard Hilsden, Julie Strychowsky, Kevin Fung Dec 2021

Rapid Standardized Operating Rooms (Rapstor) In Thyroid And Parathyroid Surgery, Hannah Ernst, Leigh Sowerby, Axel Sahovaler, Danielle Macneil, Anthony Nichols, John Yoo, Richard Hilsden, Julie Strychowsky, Kevin Fung

Paediatrics Publications

Objective: To evaluate the impact of a high efficiency rapid standardized OR (RAPSTOR) for hemithyroid/parathyroid surgery using standardized equipment sets (SES) and consecutive case scheduling (CCS) on turnover times (TOT), average case volumes, patient outcomes, hospital costs and OR efficiency/stress. Methods: Patients requiring hemithyroidectomy (primary or completion) or unilateral parathyroidectomy in a single surgeon’s practice were scheduled consecutively with SES. Retrospective control groups were classified as sequential (CS) or non-sequential (CNS). A survey regarding OR efficiency/stress was administered. Phenomenography and descriptive statistics were conducted for time points, cost and patient outcome variables. Hospital cost minimization analysis was performed. Results: The …

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Systematic Scoping Review Of Factors And Measures Of Rurality: Toward The Development Of A Rurality Index For Health Care Research In Japan, Makoto Kaneko, Ryuichi Ohta, Evelyn Vingilis, Maria Mathews, Thomas Robert Freeman Dec 2021

Systematic Scoping Review Of Factors And Measures Of Rurality: Toward The Development Of A Rurality Index For Health Care Research In Japan, Makoto Kaneko, Ryuichi Ohta, Evelyn Vingilis, Maria Mathews, Thomas Robert Freeman

Paediatrics Publications

Background: Rural-urban health care disparities are an important topic in health services research. Hence, developing valid and reliable tools to measure rurality is needed to support high quality research. However, Japan, has no index to measure rurality for health care research. In this study, we conducted a systematic scoping review to identify the important factors and methodological approaches to consider in a rurality index to inform the development of a rurality index for Japan. Methods: For our review, we searched six bibliographic databases (MEDLINE, PubMed, CINAHIL, ERIC, Web of Science and the Grey Literature Report) and official websites of national …

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The Differential Effect Of First-Time Single-Point Cane Use Between Healthy Young And Older Adults, Humberto Omana, Edward Madou, Alison Divine, Walter Wittich, Keith D. Hill, Andrew M. Johnson, Jeffrey D. Holmes, Susan W. Hunter, Mottola Dec 2021

The Differential Effect Of First-Time Single-Point Cane Use Between Healthy Young And Older Adults, Humberto Omana, Edward Madou, Alison Divine, Walter Wittich, Keith D. Hill, Andrew M. Johnson, Jeffrey D. Holmes, Susan W. Hunter, Mottola

Paediatrics Publications

Background: Walking aids are often introduced to older adults to enable independent mobility. Single-point canes are the most common device used. Benefits are tempered by research suggesting that walking aids increase fall risk. A better understanding of the effect of walking aid use on gait performance is required. Objective: To evaluate differences in the effect of initial single-point cane use on gait between younger (YAs) and older adults (OAs). Design: Cross-sectional. Setting: Community-dwelling. Participants: Twenty-six YAs (mean age ± standard deviation [SD]: 23.7 ± 2.8 years) and 25 OAs (mean age ± SD: 70.8 ± 14.1 years) participated. Inclusion criteria …

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Enacting Contextually Responsive Scholarship: Centring Occupation In Participatory Action Research With Children In India, Tanya Elizabeth Benjamin-Thomas, Debbie Laliberte Rudman, David Mark Thomas Dec 2021

Enacting Contextually Responsive Scholarship: Centring Occupation In Participatory Action Research With Children In India, Tanya Elizabeth Benjamin-Thomas, Debbie Laliberte Rudman, David Mark Thomas

Occupational Therapy Publications

Occupation-based scholars are striving to mobilize socially responsive scholarship to address occupational injustices from local to global scales. Moving forward involves expanding beyond Western, Anglophonic, female, able-bodied, adult perspectives on occupation, with critically informed participatory methodologies providing one key means to incorporate diverse perspectives on occupation and occupational justice. Drawing upon a participatory action research project with children with disabilities from rural South India, this paper puts forward an understanding of participatory action research as an occupational process (i.e., embodying a variety of occupations) and an occupation-based process (i.e., informed by an occupational lens). We forefront how ‘occupation’ was centered …

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Questioning Walls Of The Heart_World Aids Day 2021, Lei Qi Phd Candidate, Microbiology And Immunology Department Dec 2021

Questioning Walls Of The Heart_World Aids Day 2021, Lei Qi Phd Candidate, Microbiology And Immunology Department

Global Health Equity blog posts

Over 70 million people have been infected with HIV worldwide, leading to approximately 33 million deaths as of 2020 according to the United Nations Programme on HIV/AIDS("The Global HIV/AIDS Epidemic," 2020). Despite anti-viral treatment suppressing viral loads and greatly reducing HIV-related deaths, mortality remains at ~800 thousand and new infections at 1.8 million per year with no effective HIV vaccine("Global HIV & AIDS statistics," 2020-2021; "The Global HIV/AIDS Epidemic," 2020). Although the world has made significant progress, global targets for 2020 were not achieved. Division, disparity and disregard for human rights are among the failures that allowed HIV to become …

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A Case Analysis Of Partnered Research On Palliative Care For Refugees In Jordan And Rwanda, Sonya De Laat, Olive Wahoush, Rania Jaber, Wejdan Khater, Emmanuel Musoni, Ibraheem Abu Siam, Lisa Schwartz, Matthew Hunt, Lynda Redwood-Campbell, Laurie Elit, Elysée Nouvet, Rachel Yantzi, Kevin Bezanson, Carrie Bernard, Takhliq Amir, Ani Chénier, Gautham Krishnaraj, Corinne Schusterwallace Dec 2021

A Case Analysis Of Partnered Research On Palliative Care For Refugees In Jordan And Rwanda, Sonya De Laat, Olive Wahoush, Rania Jaber, Wejdan Khater, Emmanuel Musoni, Ibraheem Abu Siam, Lisa Schwartz, Matthew Hunt, Lynda Redwood-Campbell, Laurie Elit, Elysée Nouvet, Rachel Yantzi, Kevin Bezanson, Carrie Bernard, Takhliq Amir, Ani Chénier, Gautham Krishnaraj, Corinne Schusterwallace

Health Studies Publications

© 2021, The Author(s). Background: This case analysis describes dilemmas and challenges of ethical partnering encountered in the process of conducting a research study that explored moral and practical dimensions of palliative care in humanitarian crisis settings. Two contexts are the focus of this case analysis: Jordan, an acute conflict-induced refugee situation, and Rwanda, a protracted conflict-induced refugee setting. The study’s main goal was to better understand ways humanitarian organizations and health care providers might best support ethically and contextually appropriate palliative care in humanitarian contexts. An unintended outcome of the research was learning lessons about ethical dimensions of transnational …

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The Prevalence Of Multimorbidity In Primary Care: A Comparison Of Two Definitions Of Multimorbidity With Two Different Lists Of Chronic Conditions In Singapore, Eng Sing Lee, Poay Sian Sabrina Lee, Ying Xie, Bridget L. Ryan, Martin Fortin, Moira Stewart Dec 2021

The Prevalence Of Multimorbidity In Primary Care: A Comparison Of Two Definitions Of Multimorbidity With Two Different Lists Of Chronic Conditions In Singapore, Eng Sing Lee, Poay Sian Sabrina Lee, Ying Xie, Bridget L. Ryan, Martin Fortin, Moira Stewart

Family Medicine Publications

Background: The prevalence of multimorbidity varies widely due to the lack of consensus in defining multimorbidity. This study aimed to measure the prevalence of multimorbidity in a primary care setting using two definitions of multimorbidity with two different lists of chronic conditions. Methods: We conducted a cross-sectional study of 787,446 patients, aged 0 to 99 years, who consulted a family physician between July 2015 to June 2016. Multimorbidity was defined as ‘two or more’ (MM2+) or ‘three or more’ (MM3+) chronic conditions using the Fortin list and Chronic Disease Management Program (CDMP) list of chronic conditions. Crude and standardised prevalence …

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Root Canals Shaped By Nickel-Titanium Instrumentation With Automated Computerized Numerical Control Systems, Liming Wang, Wenxiang Li, Yeon Jee Yoo, Shin Hye Chung, Soram Oh, Hiran Perinpanayagam, Kee Yeon Kum, Yu Gu Dec 2021

Root Canals Shaped By Nickel-Titanium Instrumentation With Automated Computerized Numerical Control Systems, Liming Wang, Wenxiang Li, Yeon Jee Yoo, Shin Hye Chung, Soram Oh, Hiran Perinpanayagam, Kee Yeon Kum, Yu Gu

Dentistry Publications

Background: To investigate the efficacy of a nickel-titanium (NiTi) file with an automated computerized numerical control (CNC) system for root canal shaping. Methods: The movement of the automated device and the insertion angle were investigated. In Experiment 1, simulated resin root canals were randomly divided into four groups (n = 20): manual downward movement using a handpiece (Group 1), vertical downward movement by CNC (Group 2), reciprocating up and down movement by CNC (Group 3), and spiral up and down movement by CNC (Group 4). In Experiment 2, five different insertion angles of the NiTi file were evaluated (n = …

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Fear Of Large Carnivores Is Tied To Ungulate Habitat Use: Evidence From A Bifactorial Experiment, Haley K. Epperly, Michael Clinchy, Liana Y. Zanette, Robert A. Mcceery Dec 2021

Fear Of Large Carnivores Is Tied To Ungulate Habitat Use: Evidence From A Bifactorial Experiment, Haley K. Epperly, Michael Clinchy, Liana Y. Zanette, Robert A. Mcceery

Biology Publications

The fear large carnivores inspire in large ungulates has been argued to have cascading effects down food webs. However, a direct link between ungulate habitat use and their fear of large carnivores has not been experimentally tested. To fill this critical gap, we conducted a bi-factorial experiment in an African savanna. We removed shrub cover and broadcast large carnivore vocalizations (leopard, hyena, dog) or non-threatening control vocalizations in both experimentally cleared and shrubby control sites. We recorded the proactive (frequency of visitation) and reactive (fleeing or vigilance) responses of multiple prey (impala, warthog, nyala and bushbuck). Critically, we found a …

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Author Correction: Spread Of Pathological Tau Proteins Through Communicating Neurons In Human Alzheimer’S Disease (Nature Communications, (2020), 11, 1, (2612), 10.1038/S41467-020-15701-2), Jacob W. Vogel, Yasser Iturria-Medina, Olof T. Strandberg, Ruben Smith, Elizabeth Levitis, Alan C. Evans, Oskar Hansson, Michael Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John Morris, Leslie M. Shaw, Enchi Liu, Tom Montine, Ronald G. Thomas, Michael Donohue, Sarah Walter, Devon Gessert, Tamie Sather, Gus Jiminez, Danielle Harvey, Michael Donohue, Matthew Bernstein, Nick Fox, Paul Thompson Dec 2021

Author Correction: Spread Of Pathological Tau Proteins Through Communicating Neurons In Human Alzheimer’S Disease (Nature Communications, (2020), 11, 1, (2612), 10.1038/S41467-020-15701-2), Jacob W. Vogel, Yasser Iturria-Medina, Olof T. Strandberg, Ruben Smith, Elizabeth Levitis, Alan C. Evans, Oskar Hansson, Michael Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John Morris, Leslie M. Shaw, Enchi Liu, Tom Montine, Ronald G. Thomas, Michael Donohue, Sarah Walter, Devon Gessert, Tamie Sather, Gus Jiminez, Danielle Harvey, Michael Donohue, Matthew Bernstein, Nick Fox, Paul Thompson

Medical Biophysics Publications

The original version of the Supplementary information associated with this Article inadvertently omitted Supplementary Table S1. The HTML has been updated to include a corrected version of the Supplementary information.

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Correlation Between Alzheimer’S Disease And Type 2 Diabetes Using Non-Negative Matrix Factorization, Yeonwoo Chung, Hyunju Lee, Michael W. Weiner, Paul Aisen, Ronald Petersen, Cliford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John Morris, Leslie M. Shaw, Zaven Khachaturian, Greg Sorensen, Maria Carrillo, Lew Kuller, Marc Raichle, Steven Paul, Peter Davies, Howard Fillit, Franz Hefti, Davie Holtzman, M. Marcel Mesulam, William Potter, Peter Snyder, Tom Montine, Ronald G. Thomas, Michael Donohue, Sarah Walter, Tamie Sather Dec 2021

Correlation Between Alzheimer’S Disease And Type 2 Diabetes Using Non-Negative Matrix Factorization, Yeonwoo Chung, Hyunju Lee, Michael W. Weiner, Paul Aisen, Ronald Petersen, Cliford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John Morris, Leslie M. Shaw, Zaven Khachaturian, Greg Sorensen, Maria Carrillo, Lew Kuller, Marc Raichle, Steven Paul, Peter Davies, Howard Fillit, Franz Hefti, Davie Holtzman, M. Marcel Mesulam, William Potter, Peter Snyder, Tom Montine, Ronald G. Thomas, Michael Donohue, Sarah Walter, Tamie Sather

Medical Biophysics Publications

Alzheimer’s disease (AD) is a complex and heterogeneous disease that can be affected by various genetic factors. Although the cause of AD is not yet known and there is no treatment to cure this disease, its progression can be delayed. AD has recently been recognized as a brain-specific type of diabetes called type 3 diabetes. Several studies have shown that people with type 2 diabetes (T2D) have a higher risk of developing AD. Therefore, it is important to identify subgroups of patients with AD that may be more likely to be associated with T2D. We here describe a new approach …

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Higher Csf Stnfr1-Related Proteins Associate With Better Prognosis In Very Early Alzheimer’S Disease, William T. Hu, Tugba Ozturk, Alexander Kollhoff, Whitney Wharton, J. Christina Howell, Michael Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John Morris, Richard J. Perrin, Leslie M. Shaw, Zaven Kachaturian, Maria Carrillo, William Potter, Lisa Barnes, Marie Bernard, Hector González, Carole Ho, John K. Hsiao, Eliezer Masliah, Donna Masterman, Ozioma Okonkwo, Laurie Ryan, Nina Silverberg, Adam Fleisher Dec 2021

Higher Csf Stnfr1-Related Proteins Associate With Better Prognosis In Very Early Alzheimer’S Disease, William T. Hu, Tugba Ozturk, Alexander Kollhoff, Whitney Wharton, J. Christina Howell, Michael Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John Morris, Richard J. Perrin, Leslie M. Shaw, Zaven Kachaturian, Maria Carrillo, William Potter, Lisa Barnes, Marie Bernard, Hector González, Carole Ho, John K. Hsiao, Eliezer Masliah, Donna Masterman, Ozioma Okonkwo, Laurie Ryan, Nina Silverberg, Adam Fleisher

Medical Biophysics Publications

Neuroinflammation is associated with Alzheimer’s disease, but the application of cerebrospinal fluid measures of inflammatory proteins may be limited by overlapping pathways and relationships between them. In this work, we measure 15 cerebrospinal proteins related to microglial and T-cell functions, and show them to reproducibly form functionally-related groups within and across diagnostic categories in 382 participants from the Alzheimer’s Disease Neuro-imaging Initiative as well participants from two independent cohorts. We further show higher levels of proteins related to soluble tumor necrosis factor receptor 1 are associated with reduced risk of conversion to dementia in the multi-centered (p = 0.027) and …

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Kl-Vs Heterozygosity Is Associated With Lower Amyloid-Dependent Tau Accumulation And Memory Impairment In Alzheimer’S Disease, Julia Neitzel, Nicolai Franzmeier, Anna Rubinski, Martin Dichgans, Matthias Brendel, Michael Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John Morris, Leslie M. Shaw, Enchi Liu, Tom Montine, Ronald G. Thomas, Michael Donohue, Sarah Walter, Devon Gessert, Tamie Sather, Gus Jiminez, Danielle Harvey, Matthew Bernstein, Nick Fox, Paul Thompson, Norbert Schuff, Charles Decarli, Bret Borowski Dec 2021

Kl-Vs Heterozygosity Is Associated With Lower Amyloid-Dependent Tau Accumulation And Memory Impairment In Alzheimer’S Disease, Julia Neitzel, Nicolai Franzmeier, Anna Rubinski, Martin Dichgans, Matthias Brendel, Michael Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John Morris, Leslie M. Shaw, Enchi Liu, Tom Montine, Ronald G. Thomas, Michael Donohue, Sarah Walter, Devon Gessert, Tamie Sather, Gus Jiminez, Danielle Harvey, Matthew Bernstein, Nick Fox, Paul Thompson, Norbert Schuff, Charles Decarli, Bret Borowski

Medical Biophysics Publications

Klotho-VS heterozygosity (KL-VShet) is associated with reduced risk of Alzheimer’s disease (AD). However, whether KL-VShet is associated with lower levels of pathologic tau, i.e., the key AD pathology driving neurodegeneration and cognitive decline, is unknown. Here, we assessed the interaction between KL-VShet and levels of beta-amyloid, a key driver of tau pathology, on the levels of PET-assessed neurofibrillary tau in 551 controls and patients across the AD continuum. KL-VShet showed lower cross-sectional and longitudinal increase in tau-PET per unit increase in amyloid-PET when compared to that of non-carriers. This association of KL-VShet on tau-PET was stronger in Klotho mRNA-expressing brain …

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Plasma Phosphorylated-Tau181 As A Predictive Biomarker For Alzheimer’S Amyloid, Tau And Fdg Pet Status, Xue Ning Shen, Yu Yuan Huang, Shi Dong Chen, Yu Guo, Lan Tan, Qiang Dong, Jin Tai Yu, Michael W. Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John C. Morris, Richard J. Perrin, Leslie M. Shaw, Maria Carrillo, William Potter, Lisa Barnes, Marie Bernard, Hector González, Carole Ho, John K. Hsiao, Jonathan Jackson, Eliezer Masliah, Donna Masterman, Ozioma Okonkwo Dec 2021

Plasma Phosphorylated-Tau181 As A Predictive Biomarker For Alzheimer’S Amyloid, Tau And Fdg Pet Status, Xue Ning Shen, Yu Yuan Huang, Shi Dong Chen, Yu Guo, Lan Tan, Qiang Dong, Jin Tai Yu, Michael W. Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John C. Morris, Richard J. Perrin, Leslie M. Shaw, Maria Carrillo, William Potter, Lisa Barnes, Marie Bernard, Hector González, Carole Ho, John K. Hsiao, Jonathan Jackson, Eliezer Masliah, Donna Masterman, Ozioma Okonkwo

Medical Biophysics Publications

Plasma phosphorylated-tau181 (p-tau181) showed the potential for Alzheimer’s diagnosis and prognosis, but its role in detecting cerebral pathologies is unclear. We aimed to evaluate whether it could serve as a marker for Alzheimer’s pathology in the brain. A total of 1189 participants with plasma p-tau181 and PET data of amyloid, tau or FDG PET were included from ADNI. Cross-sectional relationships of plasma p-tau181 with PET biomarkers were tested. Longitudinally, we further investigated whether different p-tau181 levels at baseline predicted different progression of Alzheimer’s pathological changes in the brain. We found plasma p-tau181 significantly correlated with brain amyloid (Spearman ρ = …

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Repetitive Mild Traumatic Brain Injury In Mice Triggers A Slowly Developing Cascade Of Long-Term And Persistent Behavioral Deficits And Pathological Changes, Xiaoyun Xu, Matthew Cowan, Flavio Beraldo, Amy Schranz, Patrick Mccunn, Nicole Geremia, Zalman Brown, Maitray Patel, Karen L. Nygard, Reza Khazaee, Lihong Lu, Xingyu Liu, Michael J. Strong, Gregory A. Dekaban, Ravi Menon, Robert Bartha, Mark Daley, Haojie Mao, Vania Prado, Marco A.M. Prado, Lisa Saksida, Tim Bussey, Arthur Brown Dec 2021

Repetitive Mild Traumatic Brain Injury In Mice Triggers A Slowly Developing Cascade Of Long-Term And Persistent Behavioral Deficits And Pathological Changes, Xiaoyun Xu, Matthew Cowan, Flavio Beraldo, Amy Schranz, Patrick Mccunn, Nicole Geremia, Zalman Brown, Maitray Patel, Karen L. Nygard, Reza Khazaee, Lihong Lu, Xingyu Liu, Michael J. Strong, Gregory A. Dekaban, Ravi Menon, Robert Bartha, Mark Daley, Haojie Mao, Vania Prado, Marco A.M. Prado, Lisa Saksida, Tim Bussey, Arthur Brown

Medical Biophysics Publications

We have previously reported long-term changes in the brains of non-concussed varsity rugby players using magnetic resonance spectroscopy (MRS), diffusion tensor imaging (DTI) and functional magnetic imaging (fMRI). Others have reported cognitive deficits in contact sport athletes that have not met the diagnostic criteria for concussion. These results suggest that repetitive mild traumatic brain injuries (rmTBIs) that are not severe enough to meet the diagnostic threshold for concussion, produce long-term consequences. We sought to characterize the neuroimaging, cognitive, pathological and metabolomic changes in a mouse model of rmTBI. Using a closed-skull model of mTBI that when scaled to human leads …

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Staging Tau Pathology With Tau Pet In Alzheimer’S Disease: A Longitudinal Study, Shi Dong Chen, Jia Ying Lu, Hong Qi Li, Yu Xiang Yang, Jie Hui Jiang, Mei Cui, Chuan Tao Zuo, Lan Tan, Qiang Dong, Jin Tai Yu, Michael W. Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John C. Morris, Richard J. Perrin, Leslie M. Shaw, Maria Carrillo, William Potter, Lisa Barnes, Marie Bernard, Hector González, Carole Ho, John K. Hsiao, Jonathan Jackson, Eliezer Masliah Dec 2021

Staging Tau Pathology With Tau Pet In Alzheimer’S Disease: A Longitudinal Study, Shi Dong Chen, Jia Ying Lu, Hong Qi Li, Yu Xiang Yang, Jie Hui Jiang, Mei Cui, Chuan Tao Zuo, Lan Tan, Qiang Dong, Jin Tai Yu, Michael W. Weiner, Paul Aisen, Ronald Petersen, Clifford R. Jack, William Jagust, John Q. Trojanowki, Arthur W. Toga, Laurel Beckett, Robert C. Green, Andrew J. Saykin, John C. Morris, Richard J. Perrin, Leslie M. Shaw, Maria Carrillo, William Potter, Lisa Barnes, Marie Bernard, Hector González, Carole Ho, John K. Hsiao, Jonathan Jackson, Eliezer Masliah

Medical Biophysics Publications

A biological research framework to define Alzheimer’ disease with dichotomized biomarker measurement was proposed by National Institute on Aging–Alzheimer’s Association (NIA–AA). However, it cannot characterize the hierarchy spreading pattern of tau pathology. To reflect in vivo tau progression using biomarker, we constructed a refined topographic 18F-AV-1451 tau PET staging scheme with longitudinal clinical validation. Seven hundred and thirty-four participants with baseline 18F-AV-1451 tau PET (baseline age 73.9 ± 7.7 years, 375 female) were stratified into five stages by a topographic PET staging scheme. Cognitive trajectories and clinical progression were compared across stages with or without further dichotomy of amyloid status, …

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Expansion Of Myeloid-Derived Suppressor Cells Contributes To Metabolic Osteoarthritis Through Subchondral Bone Remodeling, Lixia Zhang, Cameron L. Kirkwood, Jiho Sohn, Ashley Lau, Mary Bayers-Thering, Supinder Kour Bali, Sridhar Rachala, John M. Marzo, Mark J. Anders, Frank Beier, Keith L. Kirkwood Dec 2021

Expansion Of Myeloid-Derived Suppressor Cells Contributes To Metabolic Osteoarthritis Through Subchondral Bone Remodeling, Lixia Zhang, Cameron L. Kirkwood, Jiho Sohn, Ashley Lau, Mary Bayers-Thering, Supinder Kour Bali, Sridhar Rachala, John M. Marzo, Mark J. Anders, Frank Beier, Keith L. Kirkwood

Bone and Joint Institute

Background: Osteoarthritis (OA) subsequent to acute joint injury accounts for a significant proportion of all arthropathies. Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of myeloid progenitor cells classically known for potent immune-suppressive activity; however, MDSCs can also differentiate into osteoclasts. In addition, this population is known to be expanded during metabolic disease. The objective of this study was to determine the role of MDSCs in the context of OA pathophysiology. Methods: In this study, we examined the differentiation and functional capacity of MDSCs to become osteoclasts in vitro and in vivo using mouse models of OA and in MDSC …

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Diet-Induced Obesity Leads To Behavioral Indicators Of Pain Preceding Structural Joint Damage In Wild-Type Mice, Geoffrey J. Kerr, Bethia To, Ian White, Magali Millecamps, Frank Beier, Matthew W. Grol, Laura S. Stone, Cheryle A. Séguin Dec 2021

Diet-Induced Obesity Leads To Behavioral Indicators Of Pain Preceding Structural Joint Damage In Wild-Type Mice, Geoffrey J. Kerr, Bethia To, Ian White, Magali Millecamps, Frank Beier, Matthew W. Grol, Laura S. Stone, Cheryle A. Séguin

Bone and Joint Institute

Introduction: Obesity is one of the largest modifiable risk factors for the development of musculoskeletal diseases, including intervertebral disc (IVD) degeneration and back pain. Despite the clinical association, no studies have directly assessed whether diet-induced obesity accelerates IVD degeneration, back pain, or investigated the biological mediators underlying this association. In this study, we examine the effects of chronic consumption of a high-fat or high-fat/high-sugar (western) diet on the IVD, knee joint, and pain-associated outcomes. Methods: Male C57BL/6N mice were randomized into one of three diet groups (chow control; high-fat; high-fat, high-sugar western diet) at 10 weeks of age and remained …

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Early Protein Intake Predicts Functional Connectivity And Neurocognition In Preterm Born Children, Emma G. Duerden, Benjamin Thompson, Tanya Poppe, Jane Alsweiler, Greg Gamble, Yannan Jiang, Myra Leung, Anna C. Tottman, Trecia Wouldes, Steven P. Miller, Jane E. Harding, Jane M. Alsweiler, Janene B. Biggs, Coila Bevan, Joanna M. Black, Frank H. Bloomfield, Kelly Fredell, Greg D. Gamble, Jane E. Harding, Sabine Huth, Yannan Jiang, Christine Kevan, Myra Leung, Geraint Phillips, Tanya Poppe, Jennifer A. Rogers, Heather Stewart, Benjamin S. Thompson Dec 2021

Early Protein Intake Predicts Functional Connectivity And Neurocognition In Preterm Born Children, Emma G. Duerden, Benjamin Thompson, Tanya Poppe, Jane Alsweiler, Greg Gamble, Yannan Jiang, Myra Leung, Anna C. Tottman, Trecia Wouldes, Steven P. Miller, Jane E. Harding, Jane M. Alsweiler, Janene B. Biggs, Coila Bevan, Joanna M. Black, Frank H. Bloomfield, Kelly Fredell, Greg D. Gamble, Jane E. Harding, Sabine Huth, Yannan Jiang, Christine Kevan, Myra Leung, Geraint Phillips, Tanya Poppe, Jennifer A. Rogers, Heather Stewart, Benjamin S. Thompson

Brain and Mind Institute Researchers' Publications

© 2021, The Author(s). Nutritional intake can promote early neonatal brain development in very preterm born neonates (< 32 weeks’ gestation). In a group of 7-year-old very preterm born children followed since birth, we examined whether early nutrient intake in the first weeks of life would be associated with long-term brain function and neurocognitive skills at school age. Children underwent resting-state functional MRI (fMRI), intelligence testing (Wechsler Intelligence Scale for Children, 5th Ed) and visual-motor processing (Beery-Buktenica, 5th Ed) at 7 years. Relationships were assessed between neonatal macronutrient intakes, functional connectivity strength between thalamic and default mode networks (DMN), and neuro-cognitive function using multivariable regression. Greater functional connectivity strength between thalamic networks and DMN was associated with greater intake of protein in the first week (β = 0.17; 95% CI 0.11, 0.23, p < 0.001) but lower intakes of fat (β = − 0.06; 95% CI − 0.09, − 0.02, p = 0.001) and carbohydrates (β = − 0.03; 95% CI − 0.04, − 0.01, p = 0.003). Connectivity strength was also associated with protein intake during the first month (β = 0.22; 95% CI 0.06, 0.37, p = 0.006). Importantly, greater thalamic-DMN connectivity strength was associated with higher processing speed indices (β = 26.9; 95% CI 4.21, 49.49, p = 0.02) and visual processing scores (β = 9.03; 95% CI 2.27, 15.79, p = 0.009). Optimizing early protein intake may contribute to promoting long-term brain health in preterm-born children.

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Sound Level Context Modulates Neural Activity In The Human Brainstem, Björn Herrmann, Sonia Yasmin, Kurdo Araz, David W. Purcell, Ingrid S. Johnsrude Dec 2021

Sound Level Context Modulates Neural Activity In The Human Brainstem, Björn Herrmann, Sonia Yasmin, Kurdo Araz, David W. Purcell, Ingrid S. Johnsrude

Brain and Mind Institute Researchers' Publications

Optimal perception requires adaptation to sounds in the environment. Adaptation involves representing the acoustic stimulation history in neural response patterns, for example, by altering response magnitude or latency as sound-level context changes. Neurons in the auditory brainstem of rodents are sensitive to acoustic stimulation history and sound-level context (often referred to as sensitivity to stimulus statistics), but the degree to which the human brainstem exhibits such neural adaptation is unclear. In six electroencephalography experiments with over 125 participants, we demonstrate that the response latency of the human brainstem is sensitive to the history of acoustic stimulation over a few tens …

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“Ai’S Gonna Have An Impact On Everything In Society, So It Has To Have An Impact On Public Health”: A Fundamental Qualitative Descriptive Study Of The Implications Of Artificial Intelligence For Public Health, Jason D. Morgenstern, Laura C. Rosella, Mark J. Daley, Vivek Goel, Holger J. Schünemann, Thomas Piggott Dec 2021

“Ai’S Gonna Have An Impact On Everything In Society, So It Has To Have An Impact On Public Health”: A Fundamental Qualitative Descriptive Study Of The Implications Of Artificial Intelligence For Public Health, Jason D. Morgenstern, Laura C. Rosella, Mark J. Daley, Vivek Goel, Holger J. Schünemann, Thomas Piggott

Brain and Mind Institute Researchers' Publications

Background: Our objective was to determine the impacts of artificial intelligence (AI) on public health practice. Methods: We used a fundamental qualitative descriptive study design, enrolling 15 experts in public health and AI from June 2018 until July 2019 who worked in North America and Asia. We conducted in-depth semi-structured interviews, iteratively coded the resulting transcripts, and analyzed the results thematically. Results: We developed 137 codes, from which nine themes emerged. The themes included opportunities such as leveraging big data and improving interventions; barriers to adoption such as confusion regarding AI’s applicability, limited capacity, and poor data quality; and risks …

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The Toolish Hand Illusion: Embodiment Of A Tool Based On Similarity With The Hand, Lucilla Cardinali, Alessandro Zanini, Russell Yanofsky, Alice C. Roy, Frédérique De Vignemont, Jody C. Culham, Alessandro Farnè Dec 2021

The Toolish Hand Illusion: Embodiment Of A Tool Based On Similarity With The Hand, Lucilla Cardinali, Alessandro Zanini, Russell Yanofsky, Alice C. Roy, Frédérique De Vignemont, Jody C. Culham, Alessandro Farnè

Brain and Mind Institute Researchers' Publications

A tool can function as a body part yet not feel like one: Putting down a fork after dinner does not feel like losing a hand. However, studies show fake body-parts are embodied and experienced as parts of oneself. Typically, embodiment illusions have only been reported when the fake body-part visually resembles the real one. Here we reveal that participants can experience an illusion that a mechanical grabber, which looks scarcely like a hand, is part of their body. We found changes in three signatures of embodiment: the real hand’s perceived location, the feeling that the grabber belonged to the …

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Exploring Electroencephalography With A Model Inspired By Quantum Mechanics, Nicholas J.M. Popiel, Colin Metrow, Geoffrey Laforge, Adrian M. Owen, Bobby Stojanoski, Andrea Soddu Dec 2021

Exploring Electroencephalography With A Model Inspired By Quantum Mechanics, Nicholas J.M. Popiel, Colin Metrow, Geoffrey Laforge, Adrian M. Owen, Bobby Stojanoski, Andrea Soddu

Brain and Mind Institute Researchers' Publications

An outstanding issue in cognitive neuroscience concerns how the brain is organized across different conditions. For instance, during the resting-state condition, the brain can be clustered into reliable and reproducible networks (e.g., sensory, default, executive networks). Interestingly, the same networks emerge during active conditions in response to various tasks. If similar patterns of neural activity have been found across diverse conditions, and therefore, different underlying processes and experiences of the environment, is the brain organized by a fundamental organizational principle? To test this, we applied mathematical formalisms borrowed from quantum mechanisms to model electroencephalogram (EEG) data. We uncovered a tendency …

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Reversed And Increased Functional Connectivity In Non-Rem Sleep Suggests An Altered Rather Than Reduced State Of Consciousness Relative To Wake, Evan Houldin, Zhuo Fang, Laura B. Ray, Bobby Stojanoski, Adrian M. Owen, Stuart M. Fogel Dec 2021

Reversed And Increased Functional Connectivity In Non-Rem Sleep Suggests An Altered Rather Than Reduced State Of Consciousness Relative To Wake, Evan Houldin, Zhuo Fang, Laura B. Ray, Bobby Stojanoski, Adrian M. Owen, Stuart M. Fogel

Brain and Mind Institute Researchers' Publications

Sleep resting state network (RSN) functional connectivity (FC) is poorly understood, particularly for rapid eye movement (REM), and in non-sleep deprived subjects. REM and non-REM (NREM) sleep involve competing drives; towards hypersynchronous cortical oscillations in NREM; and towards wake-like desynchronized oscillations in REM. This study employed simultaneous electroencephalography-functional magnetic resonance imaging (EEG-fMRI) to explore whether sleep RSN FC reflects these opposing drives. As hypothesized, this was confirmed for the majority of functional connections modulated by sleep. Further, changes were directional: e.g., positive wake correlations trended towards negative correlations in NREM and back towards positive correlations in REM. Moreover, the majority …

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Caregiver Reactions To Neuroimaging Evidence Of Covert Consciousness In Patients With Severe Brain Injury: A Qualitative Interview Study, Andrew Peterson, Fiona Webster, Laura Elizabeth Gonzalez-Lara, Sarah Munce, Adrian M. Owen, Charles Weijer Dec 2021

Caregiver Reactions To Neuroimaging Evidence Of Covert Consciousness In Patients With Severe Brain Injury: A Qualitative Interview Study, Andrew Peterson, Fiona Webster, Laura Elizabeth Gonzalez-Lara, Sarah Munce, Adrian M. Owen, Charles Weijer

Brain and Mind Institute Researchers' Publications

Background: Severe brain injury is a leading cause of death and disability. Diagnosis and prognostication are difficult, and errors occur often. Novel neuroimaging methods can improve diagnostic and prognostic accuracy, especially in patients with prolonged disorders of consciousness (PDoC). Yet it is currently unknown how family caregivers understand this information, raising ethical concerns that disclosure of neuroimaging results could result in therapeutic misconception or false hope. Methods: To examine these ethical concerns, we conducted semi-structured interviews with caregivers of patients with PDoC who were enrolled in a concurrent neuroimaging research program designed to detect covert consciousness following severe brain injury. …

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Schizophrenia Syndrome Due To C9orf72 Mutation Case Report: A Cautionary Tale And Role Of Hybrid Brain Imaging!, A. M. Burhan, U. C. Anazodo, N. M. Marlatt, L. Palaniyappan, M. Blair, E. Finger Dec 2021

Schizophrenia Syndrome Due To C9orf72 Mutation Case Report: A Cautionary Tale And Role Of Hybrid Brain Imaging!, A. M. Burhan, U. C. Anazodo, N. M. Marlatt, L. Palaniyappan, M. Blair, E. Finger

Brain and Mind Institute Researchers' Publications

Background: Frontal variant frontotemporal dementia is a common cause of presenile dementia. A hexanucleotide expansion on chromosome 9 has recently been recognized as the most common genetic mutation cause of this illness. This sub-type tends to present psychiatrically with psychosis being a common presenting symptom before the onset of cognitive changes or brain atrophy. A few case series have been published describing the prominence of early psychotic symptoms, and lack of clear brain atrophy on clinical brain imaging imposing a challenge in reaching early accurate diagnosis. In this report, we present a case whereby the diagnosis of Schizophrenia syndrome was …

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