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https://www.readbyqxmd.com/read/28096871/the-structured-clinical-interview-for-dsm-5-internet-gaming-disorder-development-and-validation-for-diagnosing-igd-in-adolescents
#1
Hoon Jung Koo, Doug Hyun Han, Sung-Yong Park, Jung-Hye Kwon
OBJECTIVE: This study aimed to develop and validate a Structured Clinical Interview for Internet Gaming Disorder (SCI-IGD) in adolescents. METHODS: First, we generated preliminary items of the SCI-IGD based on the information from the DSM-5 literature reviews and expert consultations. Next, a total of 236 adolescents, from both community and clinical settings, were recruited to evaluate the psychometric properties of the SCI-IGD. RESULTS: First, the SCI-IGD was found to be consistent over the time period of about one month...
January 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/28096374/phylogenetic-analysis-of-the-human-antibody-repertoire-reveals-quantitative-signatures-of-immune-senescence-and-aging
#2
Charles F A de Bourcy, Cesar J Lopez Angel, Christopher Vollmers, Cornelia L Dekker, Mark M Davis, Stephen R Quake
The elderly have reduced humoral immunity, as manifested by increased susceptibility to infections and impaired vaccine responses. To investigate the effects of aging on B-cell receptor (BCR) repertoire evolution during an immunological challenge, we used a phylogenetic distance metric to analyze Ig heavy-chain transcript sequences in both young and elderly individuals before and after influenza vaccination. We determined that BCR repertoires become increasingly specialized over a span of decades, but less plastic...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28095513/changes-in-circulating-b-cell-subsets-associated-with-aging-and-acute-siv-infection-in-rhesus-macaques
#3
W L William Chang, Denise F Gonzalez, Hung T Kieu, Luis D Castillo, Ilhem Messaoudi, Xiaoying Shen, Georgia D Tomaras, Barbara L Shacklett, Peter A Barry, Ellen E Sparger
Aging and certain viral infections can negatively impact humoral responses in humans. To further develop the nonhuman primate (NHP) model for investigating B cell dynamics in human aging and infectious disease, a flow cytometric panel was developed to characterize circulating rhesus B cell subsets. Significant differences between human and macaque B cells included the proportions of cells within IgD+ and switched memory populations and a prominent CD21-CD27+ unswitched memory population detected only in macaques...
2017: PloS One
https://www.readbyqxmd.com/read/28095071/mevalonate-kinase-deficiency-associated-with-ataxia-and-retinitis-pigmentosa-in-two-brothers-with-mvk-gene-mutations
#4
Ulrich Kellner, Heidi Stöhr, Silke Weinitz, Ghazaleh Farmand, Bernhard H F Weber
PURPOSE: To report the clinical and molecular genetic findings in two brothers with retinitis pigmentosa (RP) and mevalonate kinase deficiency (MKD). METHODS: The brothers were examined clinically and with fundus autofluorescence, near-infrared autofluorescence, and spectral domain optical coherence tomography. Targeted resequencing was done with a custom designed gene panel containing 78 genes associated with RP. Mutations were confirmed by direct Sanger sequencing...
January 17, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28092969/problem-internet-use-and-internet-gaming-disorder-a-survey-of-health-literacy-among-psychiatrists-from-australia-and-new-zealand
#5
Pravin Dullur, Phillipa Hay
OBJECTIVES: Research is limited on psychiatrists' opinions on the concepts of Internet Gaming Disorder (IGD) and Problematic Internet Use (PIU). We aimed to assess health literacy among psychiatrists on IGD/PIU. METHODS: A self-report survey was administered online to members of the Royal Australia and New Zealand College of Psychiatrists (RANZCP) ( n=289). RESULTS: The majority (93.7%) were familiar with the concepts of IGD/PIU. The majority (78...
January 1, 2017: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
https://www.readbyqxmd.com/read/28086979/b-cell-repertoires-in-hla-sensitized-kidney-transplant-candidates-undergoing-desensitization-therapy
#6
John F Beausang, H Christina Fan, Rene Sit, Maria U Hutchins, Kshama Jirage, Rachael Curtis, Edward Hutchins, Stephen R Quake, Julie M Yabu
BACKGROUND: Kidney transplantation is the most effective treatment for end-stage renal disease. Sensitization refers to pre-existing antibodies against human leukocyte antigen (HLA) protein and remains a major barrier to successful transplantation. Despite implementation of desensitization strategies, many candidates fail to respond. Our objective was to determine whether measuring B cell repertoires could differentiate candidates that respond to desensitization therapy. METHODS: We developed an assay based on high-throughput DNA sequencing of the variable domain of the heavy chain of immunoglobulin genes to measure changes in B cell repertoires in 19 highly HLA-sensitized kidney transplant candidates undergoing desensitization and 7 controls with low to moderate HLA sensitization levels...
January 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28060076/epibulbar-plasmacytoma-masquerading-as-subconjunctival-hemorrhage-in-a-patient-with-multiple-myeloma
#7
Amanda Bradley, Amy Estes, Lane Ulrich, Dilip Thomas, David Gay
PURPOSE: We report a 75-year-old woman with a history of multiple myeloma immunoglobulin D (IgD) variant, who presented with an epibulbar plasmacytoma masquerading as a subconjunctival hemorrhage. METHODS: Magnetic resonance imaging of the brain and orbits with and without contrast was obtained and surgical biopsy of the subconjunctival lesion was performed; histopathology confirmed the diagnosis of plasmacytoma. RESULTS: Subconjunctival biopsy revealed a plasma cell neoplasm infiltrate in the episcleral layer...
February 2017: Cornea
https://www.readbyqxmd.com/read/28059091/identification-of-distinct-subgroups-of-ebv-positive-post-transplant-diffuse-large-b-cell-lymphoma
#8
Julie Morscio, Julio Finalet Ferreiro, Sara Vander Borght, Emilie Bittoun, Olivier Gheysens, Daan Dierickx, Gregor Verhoef, Iwona Wlodarska, Thomas Tousseyn
Post-transplantation lymphoproliferative disorder is an aggressive complication of transplantation, most frequently of diffuse large B-cell lymphoma morphology and associated with Epstein-Barr virus (EBV) infection/reactivation. In this study the microenvironment of EBV(+) (n=23) and EBV(-) (n=9) post-transplant non-germinal center B-cell diffuse large B-cell lymphoma was characterized. Of EBV(+) cases somatic hypermutation analysis, gene expression profiling, and extensive phenotyping were performed. Our results demonstrated variable cytotoxic T-cell infiltration and significantly increased CD163(+) M2 macrophage infiltration in EBV(+) compared with EBV(-) post-transplant diffuse large B-cell lymphoma...
January 6, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28039305/effect-of-antiretroviral-therapy-on-the-memory-and-activation-profiles-of-b-cells-in-hiv-infected-african-women
#9
Ramla F Tanko, Andreia P Soares, Tracey L Müller, Nigel J Garrett, Natasha Samsunder, Quarraisha Abdool Karim, Salim S Abdool Karim, Catherine Riou, Wendy A Burgers
Human immunodeficiency virus infection induces a wide range of effects in B cells, including skewed memory cell differentiation, compromised B cell function, and hypergammaglobulinemia. However, data on the extent to which these B cell abnormalities can be reversed by antiretroviral therapy (ART) are limited. To investigate the effect of ART on B cells, the activation (CD86) and differentiation (IgD, CD27, and CD38) profiles of B cells were measured longitudinally in 19 HIV-infected individuals before (median, 2 mo) and after ART initiation (median, 12 mo) and compared with 19 age-matched HIV-uninfected individuals using flow cytometry...
December 30, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27998726/characterization-and-purification-of-neoplastic-cells-of-nodular-lymphocyte-predominant-hodgkin-lymphoma-from-lymph-nodes-by-flow-cytometry-and-flow-cytometric-cell-sorting
#10
Jonathan R Fromm, Anju Thomas, Brent L Wood
We report the flow cytometric (FC) identification and characterization of lymphocyte predominant (LP) cells from lymph nodes involved by nodular lymphocyte predominant Hodgkin lymphoma (NLPHL). First, we immunophenotyped the NLPHL cell line (DEV) confirming a germinal center immunophenotype, lack of expression of CD32 and CD58, and expression of CD54. Nineteen of 26 lymph nodes involved by NLPHL demonstrated a population with an LP immunophenotype (73%), which included expression of germinal center markers (CD75/Bcl-6-positive, CD32-weak/negative without CD10), a B-cell immunophenotype (CD19/CD20/CD40(+)), IgD and/or IgM expression (67%), and lack of programmed death-ligand 1/ligand 2...
December 17, 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27994173/transgenic-overexpression-of-baff-regulates-the-expression-of-immune-related-genes-in-zebrafish-danio-rerio
#11
Li Zhang, Chao Liu, Xin Zhou, Ying Xie, Libo Su, Qi Geng, Binghui Liu, Shufeng Liu
The B-cell activating factor (BAFF) is a member of tumour necrosis factor (TNF) superfamily that specifically regulates B lymphocyte proliferation and survival. Excess BAFF leads to overproduction of antibodies for secretion, anti-dsDNA antibodies and a lupus-like syndrome in mice. To investigate whether transgenic overexpression of the zebrafish BAFF leads to immunoglobulin changes and/or early maturing of the immune system, a Tol2-GFP-2A-BAFF/His recombinant plasmid was constructed by inserting a 2A peptide between the green fluorescent protein (GFP) and BAFF sequences...
December 2016: Journal of Genetics
https://www.readbyqxmd.com/read/27977620/changes-of-quality-of-life-and-cognitive-function-in-individuals-with-internet-gaming-disorder-a-6-month-follow-up
#12
Jae-A Lim, Jun-Young Lee, Hee Yeon Jung, Bo Kyung Sohn, Sam-Wook Choi, Yeon Jin Kim, Dai-Jin Kim, Jung-Seok Choi
Internet gaming disorder (IGD) contributes to poor quality of life (QOL) and cognitive dysfunction and is increasingly recognized as a social problem in various countries. However, no evidence exists to determine whether QOL and cognitive dysfunction stabilize after appropriate management. The present study addressed improvement in QOL and cognitive functioning associated with changes in addiction symptoms following outpatient management for IGD. A total of 84 young males (IGD group: N = 44, mean age: 19...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27975158/compensatory-increase-of-functional-connectivity-density-in-adolescents-with-internet-gaming-disorder
#13
Xin Du, Yongxin Yang, Peihong Gao, Xin Qi, Guijin Du, Yang Zhang, Xiaodong Li, Quan Zhang
Behavioral studies have demonstrated visual attention bias and working memory deficits in individuals with internet gaming disorder (IGD). Neuroimaging studies demonstrated that individuals with IGD presented abnormalities in brain structures and functions including resting-state functional connectivity (rsFC) disturbance. However, most previous studies investigated IGD-related rsFC alterations by using hypothesis-driven methods with priori selection of a region of interest, which cannot provide a full picture of the rsFC changes in IGD individuals...
December 14, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27965110/alterations-in-b-cell-subsets-in-early-pediatric-atopic-dermatitis
#14
Tali Czarnowicki, Hitokazu Esaki, Juana Gonzalez, Yael Renert-Yuval, Patrick Brunner, Margeaux Oliva, Yeriel Estrada, Hui Xu, Xiuzhong Zheng, Sreya Talasila, Isabel Haugh, Thy Huynh, Sarah Lyon, Gary Tran, Hugh Sampson, Mayte Suárez-Fariñas, James G Krueger, Emma Guttman-Yassky, Amy S Paller
BACKGROUND: B-cells undergo maturation and class-switching in response to antigen exposure and T-cell help. Early B-cell differentiation has not been defined in early onset atopic dermatitis (AD). OBJECTIVE: To define the frequency of B-cell subsets associated with progressive B-cell maturation and IgE class-switching. METHODS: We studied 27 children and 34 adults with moderate-severe AD (mean SCORing of AD/SCORAD 55 and 65, respectively) and age-matched controls (15 children and 27 adults)...
December 10, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27932138/potential-immunomodulatory-role-of-specific-anticytomegalovirus-intravenous-immunoglobulin-in-heart-recipients
#15
J Carbone, A Gallego, J Fernandez Yañez, I Sousa, E Sarmiento
BACKGROUND: Specific anticytomegalovirus (anti-CMV) intravenous immunoglobulin (IVIG) has the potential to influence the immune response, but its complex mode of action has not been well evaluated. METHODS: An immunologic study of 6 CMV-seronegative heart transplant patients receiving anti-CMV prophylaxis with the use of ganciclovir and CMV-IVIG (150 mg/kg within 24 hours after transplantation and 100 mg/kg on days 2, 7, 14, 22, 35, 56, and 77 after transplantation) was performed in a single center...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932105/b-cell-activating-factor-levels-are-associated-with-antibody-mediated-histological-damage-in-kidney-transplantation
#16
C Sango, D Merino, D San Segundo, E Rodrigo, M Lopez-Hoyos, A Benito, M Ángeles Ramos, J Gómez-Román, M Arias
INTRODUCTION: Along with death engraftment, in recent years, antibody-mediated damage has been identified as the leading cause of loss of kidney transplants. Despite the recognition of the role of the B-lymphocyte subpopulation in the development of both tolerance and rejection, little is known about the trigger mechanisms and effectors of this humoral response. BACKGROUND: We analyzed the relationship between B lymphocyte subpopulations and levels of B-cell-activating factor (BAFF) with the histological findings in biopsies of renal transplantation...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27925349/hepatitis-c-viraemia-reversibly-maintains-subset-of-antigen-specific-t-bet-tissue-like-memory-b-cells
#17
L-Y Chang, Y Li, D E Kaplan
BACKGROUND: Chronic antigen exposure and/or ageing increases the frequency of T-box expressed in T cells (T-bet)-expressing B-lymphocytes in mice. The frequency and significance of B-cell T-bet expression during chronic hepatitis C (HCV) infection in human subjects has never been described. METHODS: Healthy controls, cirrhotic and noncirrhotic HCV-infected patients, and non-HCV patients with cirrhosis were recruited. Peripheral blood mononuclear cells were phenotyped for expression of T-bet and related markers by flow cytometry...
December 7, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27920152/toll-like-receptor-9-stimulation-induces-aberrant-expression-of-a-proliferation-inducing-ligand-by-tonsillar-germinal-center-b-cells-in-iga-nephropathy
#18
Masahiro Muto, Benoit Manfroi, Hitoshi Suzuki, Kensuke Joh, Masaaki Nagai, Sachiko Wakai, Christian Righini, Masayuki Maiguma, Shozo Izui, Yasuhiko Tomino, Bertrand Huard, Yusuke Suzuki
The TNF family member a proliferation-inducing ligand (APRIL; also known as TNFSF13), produced by myeloid cells, participates in the generation and survival of antibody-producing plasma cells. We studied the potential role of APRIL in the pathogenesis of IgA nephropathy (IgAN). We found that a significant proportion of germinal centers (GCs) in tonsils of patients with IgAN contained cells aberrantly producing APRIL, contributing to an overall upregulation of tonsillar APRIL expression compared with that in tonsils of control patients with tonsillitis...
December 5, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27899813/the-pro-fibrotic-role-of-dipeptidyl-peptidase-4-in-carbon-tetrachloride-induced-experimental-liver-injury
#19
Xin M Wang, Lauren E Holz, Sumaiya Chowdhury, Shaun P Cordoba, Kathryn A Evans, Margaret G Gall, Ana Júlia Vieira de Ribeiro, Yuan Zhou Zheng, Miriam T Levy, Denise Mt Yu, Tsun-Wen Yao, Natasa Polak, Christopher J Jolly, Patrick Bertolino, Geoffrey W McCaughan, Mark D Gorrell
Liver fibrosis is a progressive pathological process involving inflammation and extracellular matrix deposition. Dipeptidyl peptidase 4 (DPP4), also known as CD26, is a cell surface glycoprotein and serine protease. DPP4 binds to fibronectin, can inactivate specific chemokines, incretin hormone and neuropeptides, and influences cell adhesion and migration. Such properties suggest a pro-fibrotic role for this peptidase but this hypothesis needs in vivo examination. Experimental liver injury was induced with carbon tetrachloride (CCl4) in DPP4 gene knockout (gko) mice...
December 20, 2016: Immunology and Cell Biology
https://www.readbyqxmd.com/read/27899390/hyper-igd-and-periodic-fever-syndrome-hids-due-to-compound-heterozygosity-for-g336s-and-v377i-in-a-44-year-old-patient-with-a-27-year-history-of-fever
#20
Stefan Schlabe, Carolynne Schwarze-Zander, Peter Lohse, Jürgen Kurt Rockstroh
Hereditary autoinflammatory syndromes are a rare, but notable cause of fever of unknown origin. During the last few years, the knowledge of the genetic background has significantly increased. Here, we report a novel pathogenic mutation in the MVK gene as the cause of fever in a 44-year-old male patient with a history of fever over a period of 27 years.
November 29, 2016: BMJ Case Reports
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