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https://www.readbyqxmd.com/read/28342823/evidence-that-increased-kcnj6-gene-dose-is-necessary-for-deficits-in-behavior-and-dentate-gyrus-synaptic-plasticity-in-the-ts65dn-mouse-model-of-down-syndrome
#1
Alexander M Kleschevnikov, Jessica Yu, Jeesun Kim, Larisa V Lysenko, Zheng Zhen, Y Eugene Yu, William C Mobley
Down syndrome (DS), trisomy 21, is caused by increased dose of genes present on human chromosome 21 (HSA21). The gene-dose hypothesis argues that a change in the dose of individual genes or regulatory sequences on HSA21 is necessary for creating DS-related phenotypes, including cognitive impairment. We focused on a possible role for Kcnj6, the gene encoding Kir3.2 (Girk2) subunits of a G-protein-coupled inwardly-rectifying potassium channel. This gene resides on a segment of mouse Chromosome 16 that is present in one extra copy in the genome of the Ts65Dn mouse, a well-studied genetic model of DS...
March 22, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28342639/sendai-virus-mucosal-vaccination-establishes-lung-resident-memory-cd8%C3%A2-t-cell-immunity-and-boosts-bcg-primed-protection-against-tb-in-mice
#2
Zhidong Hu, Ka-Wing Wong, Hui-Min Zhao, Han-Li Wen, Ping Ji, Hui Ma, Kang Wu, Shui-Hua Lu, Feng Li, Zhong-Ming Li, Tsugumine Shu, Jian-Qing Xu, Douglas B Lowrie, Xiao-Yong Fan
Accumulating evidence has shown the protective role of CD8(+) T cells in vaccine-induced immunity against Mycobacterium tuberculosis (Mtb) despite controversy over their role in natural immunity. However, the current vaccine BCG is unable to induce sufficient CD8(+) T cell responses, especially in the lung. Sendai virus, a respiratory RNA virus, is here engineered firstly as a novel recombinant anti-TB vaccine (SeV85AB) that encodes Mtb immuno-dominant antigens, Ag85A and Ag85B. A single mucosal vaccination elicited potent antigen-specific T cell responses and a degree of protection against Mtb challenge similar to the effect of BCG in mice...
March 22, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28337201/phenotype-and-tissue-residency-of-lymphocytes-in-the-murine-oral-mucosa
#3
Joo-Young Park, Hyunsoo Chung, Youngnim Choi, Jung-Hyun Park
The oral mucosa is a critical barrier tissue that harbors a series of distinct immune cell subsets. Immune surveillance in the oral mucosa is important for both local and systemic immunity because the oral cavity is a heavily utilized route of pathogen entry and also serves as site of pathogen propagation. Nonetheless, composition and phenotype of the lymphocyte pool in the oral mucosa have remained poorly characterized. Utilizing a newly established protocol for mucosal immune cell isolation, here, we report that the oral mucosa features a unique cellular composition of immune cells, which differed not only from secondary lymphoid organs but also from mucosal tissues in the gut and lung...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28336265/brain-structural-markers-and-caregiving-characteristics-as-interacting-correlates-of-caregiving-strain
#4
Stephen F Smagula, Scott Beach, Andrea L Rosso, Anne B Newman, Richard Schulz
OBJECTIVE: To evaluate the association between brain structural markers and caregiving strain among older informal caregivers. DESIGN: A secondary data analysis combining data from the Caregiver Health Effects Study (1993-1994) and the Cardiovascular Health Study MRI examination (1992-1994). SETTING: Four United States communities. PARTICIPANTS: Co-residing spousal caregivers (N = 237; mean age: 76.2 years, SD: 2...
February 21, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28333613/collaborative-management-of-neurocognitive-disorders-in-primary-care-explorations-of-an-attempt-at-culture-change
#5
Lewis Mehl-Madrona, Barbara Mainguy
INTRODUCTION: Minor neurocognitive disorder (MiND; previously mild cognitive impairment) is a transitional zone between normal cognitive function and early stages of major neurocognitive disorder (previously called dementia). Of people with MiND, 5% to 10% progress to major neurocognitive disorder. Simple interventions such as memory activities, balance exercises, and anti-inflammatory diets have been shown to improve cognitive ability. Also, education and support in group settings have proved beneficial for patients with MiND...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28322578/interview-with-amr-h-sawalha-epigenetics-and-autoimmunity
#6
Amr H Sawalha
Amr H Sawalha is Professor of Internal Medicine and Marvin and Betty Danto Research Professor of Connective Tissue Research at the University of Michigan, Department of Internal Medicine, Division of Rheumatology. He also holds faculty appointments at the Center for Computational Medicine and Bioinformatics and the Graduate Program in Immunology at the University of Michigan. He was recently appointed as Guest Professor at Central South University in Changsha, China. He received his medical degree from Jordan University of Science and Technology and completed his residency training in internal medicine at the University of Oklahoma Health Sciences Center, and his fellowship in rheumatology at the University of Michigan...
March 21, 2017: Epigenomics
https://www.readbyqxmd.com/read/28320756/do-memory-b-cells-form-secondary-germinal-centers-it-depends
#7
Kathryn A Pape, Marc K Jenkins
The memory B-cell pool in an immune individual is more heterogeneous than previously recognized. The different types of memory B cells likely play distinct roles in tuning the secondary immune response because they differ in their potential to generate plasmablasts, which secrete antibodies, or germinal center (GC) cells, which generate new and higher affinity memory cells. We propose that the production of plasmablasts or GC cells by a memory B cell is controlled by its state of differentiation and the amount and affinity of antigen-specific antibodies present in the individual in which it resides...
March 20, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28320267/modulating-effect-of-cytokines-on-mechanisms-of-synaptic-plasticity-in-the-brain
#8
REVIEW
S G Levin, O V Godukhin
After accumulation of data showing that resident brain cells (neurons, astrocytes, and microglia) produce mediators of the immune system, such as cytokines and their receptors under normal physiological conditions, a critical need emerged for investigating the role of these mediators in cognitive processes. The major problem for understanding the functional role of cytokines in the mechanisms of synaptic plasticity, de novo neurogenesis, and learning and memory is the small number of investigated cytokines...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28300484/factors-associated-with-general-and-health-related-quality-of-life-in-menopausal-transition-among-women-from-serbia
#9
Jelena Dotlic, Ilma Kurtagic, Selmina Nurkovic, Nikolina Kovacevic, Sanja Radovanovic, Biljana Rancic, Branislav Milosevic, Milan Terzic, Tatjana Gazibara
This study assessed factors associated with quality of life (QOL) among Serbian peri- and postmenopausal women using two menopause-specific scales. This cross-sectional study included 500 women aged 40-65 years who had a gynecologic check-up in one of two Community Health Centers in Belgrade during February 2014 to January 2015. Women completed: a questionnaire about socio-demographics, habits and health status; a menopause-specific questionnaire, Utian's Quality of Life Scale (UQOL); a Women's Health Questionnaire (WHQ) and Beck's Depression Inventory (BDI)...
March 16, 2017: Women & Health
https://www.readbyqxmd.com/read/28295233/retention-of-ag-specific-memory-cd4-t-cells-in-the-draining-lymph-node-indicates-lymphoid-tissue-resident-memory-populations
#10
Clare L Marriott, Emma E Dutton, Michio Tomura, David R Withers
Several different memory T-cell populations have now been described based upon surface receptor expression and migratory capabilities. Here we have assessed murine endogenous memory CD4(+) T cells generated within a draining lymph node and their subsequent migration to other secondary lymphoid tissues. Having established a model response targeting a specific peripheral lymph node, we temporally labelled all the cells within draining lymph node using photoconversion. Tracking of photoconverted and non-photoconverted Ag-specific CD4(+) T cells revealed the rapid establishment of a circulating memory population in all lymph nodes within days of immunisation...
March 15, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28295019/m2e-tetramer-specific-memory-cd4-t-cells-are-broadly-protective-against-influenza-infection
#11
D G Eliasson, A Omokanye, K Schön, U A Wenzel, V Bernasconi, M Bemark, A Kolpe, K El Bakkouri, T Ysenbaert, L Deng, W Fiers, X Saelens, N Lycke
Matrix protein 2 ectodomain (M2e) is considered an attractive component of a broadly protective, universal influenza A vaccine. Here we challenge the canonical view that antibodies against M2e are the prime effectors of protection. Intranasal immunizations of Balb/c mice with CTA1-3M2e-DD-generated M2e-specific memory CD4 T cells that were I-A(d) restricted and critically protected against infection, even in the complete absence of antibodies, as observed in JhD mice. Whereas some M2e-tetramer-specific memory CD4 T cells resided in spleen and lymph nodes, the majority were lung-resident Th17 cells, that rapidly expanded upon a viral challenge infection...
March 15, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28293238/role-of-memory-t-cells-in-allograft-rejection-and-tolerance
#12
REVIEW
Gilles Benichou, Bruno Gonzalez, Jose Marino, Katayoun Ayasoufi, Anna Valujskikh
Memory T cells are characterized by their low activation threshold, robust effector functions, and resistance to conventional immunosuppression and costimulation blockade. Unlike their naïve counterparts, memory T cells reside in and recirculate through peripheral non-lymphoid tissues. Alloreactive memory T cells are subdivided into different categories based on their origins, phenotypes, and functions. Recipients whose immune systems have been directly exposed to allogeneic major histocompatibility complex (MHC) molecules display high affinity alloreactive memory T cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28290450/when-input-does-not-match-output-lung-resident-memory-t-cells-decay
#13
Linda M Wakim
No abstract text is available yet for this article.
March 14, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28289977/location-function-and-ontogeny-of-pulmonary-macrophages-during-the-steady-state
#14
REVIEW
Natalio Garbi, Bart N Lambrecht
The lung is continuously exposed to potentially hazardous environmental challenges in the form of inert material and microbes. Pulmonary macrophages are critical in maintaining a low inflammatory context in the lung to facilitate optimal gas exchange. During infection, however, they mediate the immediate response to invading microorganisms in coordination with epithelial cells and other tissue-resident immune cells including dendritic cells, innate lymphocytes and memory T cells, and pulmonary interstitial macrophages...
March 13, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28289058/what-is-wrong-with-pertussis-vaccine-immunity-inducing-and-recalling-vaccine-specific-immunity
#15
Christiane S Eberhardt, Claire-Anne Siegrist
The high incidence of pertussis in vaccinated adolescents suggests the failing of immune memory. We argue that acellular pertussis vaccines generate memory cells that are effectively reactivated by boosters better than by Bordetella pertussis exposure. We propose that there are two main causes. One is the induction of vaccine-specific immunity rather than pathogen-specific immunity. The second is that strictly mucosal infections such as B. pertussis poorly reactivate memory B and T cells residing deep in lymph nodes or tissues...
March 13, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28287047/how-nursing-home-residents-with-dementia-respond-to-the-interactive-art-installation-venster-a-pilot-study
#16
Tom Luyten, Susy Braun, Gaston Jamin, Susan van Hooren, Luc de Witte
The goal of this study was (1) to determine whether and how nursing home residents with dementia respond to the interactive art installation in general and (2) to identify whether responses change when the content type and, therefore, the nature of the interaction with the artwork changes. The interactive art installation 'VENSTER' evokes responses in nursing home residents with dementia, illustrating the potential of interactive artworks in the nursing home environment. Frequently observed responses were naming, recognizing or asking questions about depicted content and how the installation worked, physically gesturing towards or tapping on the screen and tapping or singing along to the music...
March 12, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28286864/in-vivo-expansion-of-melanoma-specific-t-cells-using-microneedle-arrays-coated-with-immune-polyelectrolyte-multilayers
#17
Qin Zeng, Joshua M Gammon, Lisa H Tostanoski, Yu-Chieh Chiu, Christopher M Jewell
Microneedles (MNs) are micron-scale polymeric or metallic structures that offer distinct advantages for vaccines by efficiently targeting skin-resident immune cells, eliminating injection-associated pain, and improving patient compliance. These advantages, along with recent studies showing therapeutic benefits achieved using traditional intradermal injections in human cancer patients, suggest MN delivery might enhance cancer vaccines and immunotherapies. We recently developed a new class of polyelectrolyte multilayers based on the self-assembly of model peptide antigens and molecular toll-like receptor agonists (TLRa) into ultrathin, conformal coatings...
February 13, 2017: ACS Biomaterials Science & Engineering
https://www.readbyqxmd.com/read/28283419/circulating-gluten-specific-foxp3-cd39-regulatory-t-cells-have-impaired-suppressive-function-in-celiac-disease
#18
Laura Cook, C Mee Ling Munier, Nabila Seddiki, David van Bockel, Noé Ontiveros, Melinda Y Hardy, Jana K Gillies, Megan K Levings, Hugh Reid, Jan Peterson, Jamie Rossjohn, Robert P Anderson, John Zaunders, Jason A Tye-Din, Anthony D Kelleher
BACKGROUND: Celiac disease is a chronic immune-mediated inflammatory disorder of the gut triggered by dietary gluten. Although the effector T-cell response in celiac disease has been well characterized, the role of regulatory T-cells (Tregs) in the loss of tolerance to gluten remains poorly understood. OBJECTIVE: To define if celiac disease patients have a dysfunction or lack of gluten-specific FOXP3(+) Tregs. METHODS: Treated celiac disease patients underwent oral wheat challenge to stimulate re-circulation of gluten-specific T-cells...
March 7, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28275186/cpg-in-combination-with-an-inhibitor-of-notch-signaling-suppresses-fi-rsv-enhanced-airway-hyperresponsiveness-and-inflammation-through-inhibiting-th17-memory-responses-and-promoting-tissue-resident-memory-cells-in-lungs
#19
Lei Zhang, Hongyong Li, Yan Hai, Wei Yin, Wenjian Li, Boyang Zheng, Xiaomin Du, Na Li, Zhengzheng Zhang, Yuqing Deng, Ruihong Zeng, Lin Wei
Respiratory syncytial virus (RSV) is the leading cause of childhood hospitalizations. The formalin-inactivated RSV (FI-RSV) vaccine enhanced respiratory disease (ERD) has been an obstacle to the development of a safe and effective killed RSV vaccine. Agonists of Toll-like receptor (TLR) have been shown to regulate immune responses induced by FI-RSV. Notch signaling plays critical roles during the differentiation and effector function phases of innate and adaptive immune responses. Cross-talk between TLR and Notch signaling pathways results in fine tuning of TLR-triggered innate inflammatory responses...
March 8, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28274794/understanding-memory-cd8-t-cells
#20
REVIEW
Tasleem Samji, Kamal M Khanna
Memory CD8(+) T cells were originally thought to exist as two populations (effector and central memory). In recent years, a third population called resident memory T cells has been discovered and further to this these populations are being divided into different subtypes. Understanding the function and developmental pathways of memory CD8(+) T cells is key to developing effective therapies against cancer and infectious diseases. Here we have reviewed what is currently known about all three subsets of memory CD8(+) T populations and as to how each population was originally discovered and the developmental pathways of each subpopulation...
March 6, 2017: Immunology Letters
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