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https://www.readbyqxmd.com/read/29667858/longitudinal-analysis-of-varicella-zoster-virus-specific-antibodies-in-systemic-lupus-erythematosus-no-association-with-subclinical-viral-reactivations-or-lupus-disease-activity
#1
C Rondaan, C C van Leer, S van Assen, H Bootsma, K de Leeuw, S Arends, N A Bos, J Westra
Systemic lupus erythematosus (SLE) patients are at high risk of herpes zoster. Previously, we found increased immunoglobulin (Ig)G levels against varicella-zoster virus (VZV) in SLE patients compared to controls, while antibody levels against diphtheria and cellular immunity to VZV were decreased. We aimed to test our hypothesis that increased VZV-IgG levels in SLE result from subclinical VZV reactivations, caused by stress because of lupus disease activity or immunosuppressive drug use. Methods Antibody levels to VZV (IgG, IgA, IgM), total IgG and VZV-DNA were longitudinally determined in the serum of 34 SLE patients, using enzyme-linked immunosorbent assay and polymerase chain reaction...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29667575/a-cluster-of-two-human-cases-of-tick-borne-encephalitis-tbe-transmitted-by-unpasteurised-goat-milk-and-cheese-in-germany-may-2016
#2
S O Brockmann, R Oehme, T Buckenmaier, M Beer, A Jeffery-Smith, M Spannenkrebs, S Haag-Milz, C Wagner-Wiening, C Schlegel, J Fritz, S Zange, M Bestehorn, A Lindau, D Hoffmann, S Tiberi, U Mackenstedt, G Dobler
In May 2016, two cases of tick-borne encephalitis (TBE) were confirmed by serology (positive IgM and IgG antibodies against TBE virus (TBEV) in serum), with a possible link to raw milk and cheese from a goat farm in a region in Baden-Württemberg, Germany not previously known as TBE-endemic. The outbreak investigation identified 32 consumers of goat dairy products (29 consumers, one farm employee, two owners) of whom none had IgM antibodies against TBEV 3-8 weeks after consumption. Of the 27 notified TBE cases in the State, none reported consumption of raw goat milk or cheese from the suspected farm...
April 2018: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29665046/intrathecal-igm-production-a-promising-high-risk-marker-in-cis-patients
#3
André Huss, Ahmed Abdelhak, Steffen Halbgebauer, Benjamin Mayer, Makbule Senel, Markus Otto, Hayrettin Tumani
Markers predicting the course of patients with clinically isolated syndrome (CIS) towards multiple sclerosis (MS) are urgently needed. We evaluated the predictive values of an intrathecal IgG and IgM production with different methods towards conversion to definite MS according to revised McDonald 2010 criteria in a cohort of 126 CIS patients. An intrathecal IgM production showed the highest likelihood ratio for the conversion of CIS patients to definite MS of 6.3, whereas it was 1.4 for oligoclonal IgG bands...
April 17, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29664701/prevalence-of-selected-zoonotic-diseases-and-risk-factors-at-a-human-wildlife-livestock-interface-in-mpumalanga-province-south-africa
#4
Gregory J G Simpson, Vanessa Quan, John Frean, Darryn L Knobel, Jennifer Rossouw, Jacqueline Weyer, Tanguy Marcotty, Jacques Godfroid, Lucille H Blumberg
A lack of surveillance and diagnostics for zoonotic diseases in rural human clinics limits clinical awareness of these diseases. We assessed the prevalence of nine zoonotic pathogens in a pastoral, low-income, HIV-endemic community bordering wildlife reserves in South Africa. Two groups of participants were included: malaria-negative acute febrile illness (AFI) patients, called febrilers, at three clinics (n = 74) and second, farmers, herders, and veterinary staff found at five government cattle dip-tanks, called dip-tanksters (n = 64)...
April 17, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29664567/memory-control-by-the-b-cell-antigen-receptor
#5
REVIEW
Niklas Engels, Jürgen Wienands
The generation of memory B cells (MBCs) that have undergone immunoglobulin class switching from IgM, which dominates primary antibody responses, to other immunoglobulin isoforms is a hallmark of immune memory. Hence, humoral immunological memory is characterized by the presence of serum immunoglobulins of IgG subtypes known as the γ-globulin fraction of blood plasma proteins. These antibodies reflect the antigen experience of B lymphocytes and their repeated triggering. In fact, efficient protection against a previously encountered pathogen is critically linked to the production of pathogen-specific IgG molecules even in those cases where the primary immune response required cellular immunity, for example, T cell-mediated clearance of intracellular pathogens such as viruses...
May 2018: Immunological Reviews
https://www.readbyqxmd.com/read/29663452/seroprevalence-and-risk-factors-of-hepatitis-e-virus-infection-among-pregnant-women-attending-antenatal-care-in-health-facilities-of-tigray-northern-ethiopia
#6
Selam Niguse, Haftamu Hailekiros, Gerezgiher Buruh, Tadese Dejene, Nega Berhe, Tsehaye Asmelash
Existing literatures from developing countries show an increased mortality and morbidity related to hepatitis E virus during pregnancy as compared to the general population. Studies focusing on pregnant women are required for policy makers to improve maternal and child health. Therefore this study is aimed at determining the prevalence and associated risk factors of hepatitis E virus infection among pregnant women attending the health facilities of Tigray region, Northern Ethiopia. In this cross sectional study 846 pregnant women were included consecutively from April 2014 to February 2016...
April 16, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29663448/seroprevalence-molecular-epidemiology-and-quantitation-of-parvovirus-b19-dna-levels-in-iranian-blood-donors
#7
Maryam Zadsar, Arezoo Aghakhani, Mohammad Banifazl, Monireh Kazemimanesh, Seyed Morteza Tabatabaei Yazdi, Setareh Mamishi, Anahita Bavand, Mona Sadat Larijani, Amitis Ramezani
Human parvovirus B19 (B19) infection is common among blood donors, and healthy blood donors can transmit virus via transfusion. Due to resistance of B19 to viral inactivation methods, there is a potential concern regarding transfusion safety in blood products. We aimed to determine the seroprevalence, molecular epidemiology and quantitation of B19 DNA levels in blood donors in Tehran, Iran. 500 blood donors from Blood Transfusion Research Center were studied. ELISA was used for detection of B19 IgG and IgM and nested PCR was carried out for detection of B19 DNA...
April 16, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29662676/-toxoplasma-gondii-exposure-and-epilepsy-a-matched-case-control-study-in-a-public-hospital-in-northern-mexico
#8
Cosme Alvarado-Esquivel, Yazmin Del Rosario Rico-Almochantaf, Jesús Hernández-Tinoco, Gerardo Quiñones-Canales, Luis Francisco Sánchez-Anguiano, Jorge Torres-González, Eda Guadalupe Ramírez-Valles, Andrea Minjarez-Veloz
Objectives: This study aimed to determine the association between infection with Toxoplasma gondii and epilepsy in patients attended to in a public hospital in the northern Mexican city of Durango. Methods: We performed an age- and gender-matched case-control study of 99 patients suffering from epilepsy and 99 without epilepsy. Sera of participants were analyzed for anti- T. gondii IgG and IgM antibodies using commercially available enzyme-linked immunoassays. Seropositive samples to T...
2018: SAGE Open Medicine
https://www.readbyqxmd.com/read/29661927/t-independent-ifn%C3%AE-and-b-cells-cooperate-to-prevent-mortality-associated-with-disseminated-chlamydia-muridarum-genital-tract-infection
#9
Taylor B Poston, Catherine M O'Connell, Jenna Girardi, Jeanne E Sullivan, Uma M Nagarajan, Anthony Marinov, Amy M Scurlock, Toni Darville
CD4 T cells and antibody are required for optimal acquired immunity to C. muridarum genital tract infection, and T cell-mediated IFNγ production is necessary to clear infection in the absence of humoral immunity. However, the role of T cell-independent immune responses during primary infection remains unclear. We investigated this question by inoculating wild-type and immune-deficient mice with C. muridarum CM001, a clonal isolate capable of enhanced extragenital replication. Genital inoculation of wild-type mice resulted in transient dissemination to the lungs and spleen that then was rapidly cleared from these organs...
April 16, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29659363/-late-diagnosis-of-whim-sydrome
#10
María V Paolini, Silvia Danielian, Emma Prieto, María Fernanda Tami, Matías M Oleastro, Diego S Fernández Romero
WHIM syndrome is a primary autosomal dominant immuno deficiency due to CXCR4 mutations characterized by mucocutaneous warts, hypogammaglobulinemia, recurrent bacterial infections and myelokathesis. Treatment consists in prophylactic antibiotics, immunoglobulin replacement and granulocyte or granulocyte/monocyte colony stimulating factors. We present the case of a 21 year old woman who showed leukopenia at 10 months of age and one year later multiple infections with hypogammaglobulinemia requiring intravenous immunoglobulin...
2018: Medicina
https://www.readbyqxmd.com/read/29659194/detection-of-hepatitis-e-virus-rna-in-saliva-for-diagnosis-of-acute-infection
#11
A Rivero-Juarez, M Frias, P Lopez-Lopez, A Martinez-Peinado, M Á Risalde, T Brieva, I Machuca, Á Camacho, I García-Bocanegra, J C Gomez-Villamandos, A Rivero
Diagnosis of acute hepatitis E virus (HEV) infection is established by detection of anti-HEV IgM antibodies by ELISA or by amplification of serum viral RNA. Here, we evaluate the diagnostic value of testing HEV RNA in saliva to identify patients with acute HEV infection. Prospective proof-of-concept study including patients with acute hepatitis. Whole blood and neat saliva samples were obtained from all patients. Saliva samples were processed and analysed for HEV RNA by RT-PCR within 2 hr after collection...
April 16, 2018: Zoonoses and Public Health
https://www.readbyqxmd.com/read/29658452/-clinical-features-and-gene-mutations-of-primary-immunodeficiency-disease-an-analysis-of-7-cases
#12
Jun-Chao Wang, Xiao-Xue Liu
This research investigated the clinical features of immunodeficiency disease and the features of the mutation of its pathogenic genes. All 7 patients were boys aged 5 months to 4 years and 6 months and had a history of recurrent respiratory infection and pneumonia, low levels of IgM and IgG, and abnormal absolute values or percentages of lymphocyte subsets. High-throughput sequencing showed c.1684C>T mutations in the BTK gene in patient 1 and IVS8+2T>C splice site mutations in the BTK gene in patient 2...
April 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29657833/paradoxical-arthritis-occurring-during-anti-tnf-in-patients-with-inflammatory-bowel-disease-histological-and-immunological-features-of-a-complex-synovitis
#13
Stefano Alivernini, Daniela Pugliese, Barbara Tolusso, Laura Bui, Luca Petricca, Luisa Guidi, Luisa Mirone, Gian Ludovico Rapaccini, Francesco Federico, Gianfranco Ferraccioli, Alessandro Armuzzi, Elisa Gremese
Objective: Paradoxical arthritis under tumour necrosis factor inhibitor (TNF-i) for inflammatory bowel disease (IBD) has been described. This study aims to evaluate the histological features of paired synovial tissue (ST) and colonic mucosa (CM) tissue in patients with IBD developing paradoxical arthritis under TNF-i. Methods: Patients with IBD without history of coexisting joint involvement who developed arthritis under TNF-i were enrolled. Each patient underwent ST biopsy and ileocolonoscopy with CM biopsies...
2018: RMD Open
https://www.readbyqxmd.com/read/29656787/fifty-year-incidence-of-waldenstr%C3%A3-m-macroglobulinemia-in-olmsted-county-minnesota-from-1961-through-2010-a-population-based-study-with-complete-case-capture-and-hematopathologic-review
#14
Robert A Kyle, Dirk R Larson, Ellen D McPhail, Terry M Therneau, Angela Dispenzieri, Shaji Kumar, Prashant Kapoor, James R Cerhan, S Vincent Rajkumar
OBJECTIVE: To determine the incidence of Waldenström macroglobulinemia (WM) in a strictly defined geographic area over a 50-year period. PATIENTS AND METHODS: All residents of Olmsted County with a diagnosis of WM, consisting of a monoclonal IgM protein of any size and/or 10% or more lymphoplasmacytic infiltration of the bone marrow along with anemia, constitutional symptoms, hyperviscosity, lymphadenopathy, or hepatosplenomegaly requiring therapy, were identified from January 1, 1961, to December 31, 2010...
April 12, 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29656374/expression-of-circulating-semaphorin3a-and-its-association-with-inflammation-and-bone-destruction-in-rheumatoid-arthritis
#15
Hui Gao, Xiao-Xu Ma, Qian Guo, Lin-Feng Xie, Yu-Chao Zhong, Xue-Wu Zhang
To determine the expression of Semaphorin3A (Sema3A) in rheumatoid arthritis (RA) patients, and analyze the correlation between serum Sema3A and the pathogenesis of RA. The concentration of serum Sema3A and its mRNA expression level were detected in RA patients. The association of serum Sema3A level with clinical and laboratory features of RA were analyzed. Serum Sema3A of 130 RA patients (15.89 ± 8.58 ng/ml) was significantly higher than that of 150 HC (6.96 ± 2.62 ng/ml) and 215 patients with other rheumatic diseases (P < 0...
April 14, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29656134/seroprevalence-and-risk-factors-of-hepatitis-e-virus-infection-in-cancer-patients-in-eastern-china
#16
Meng-Jie Bai, Na Zhou, Wei Dong, Guang-Xing Li, Wei Cong, Xing-Quan Zhu
OBJECTIVES: Hepatitis E virus (HEV) is a single-stranded RNA virus infecting a variety of animals and humans. However, little is known of HEV infection among cancer patients in China. This study provides new epidemiological data for the prevalence of co-infection of HEV in cancer patients, indicating that HEV infection is common in this group. METHODS: We recruited a total of 950 cancer patients and 950 control volunteers from Shandong Province, eastern China, to participate in our investigation...
April 12, 2018: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29653201/kinetics-of-igm-and-igg-antibodies-after-scrub-typhus-infection-and-the-clinical-implications
#17
George M Varghese, Veera Manikandan Rajagopal, Paul Trowbridge, Divya Purushothaman, Sherry Joseph Martin
OBJECTIVES: Serology detecting IgM antibodies is the most widely used test to diagnose scrub typhus infection. However, kinetics of IgM and IgG antibodies post-infection remains elusive which could contribute to false positivity. The objective of this study is to document the nature of evolution of these antibody titers after infection. METHODS: Adult patients previously confirmed to have scrub typhus using IgM ELISA or positive PCR or both were included in this cross-sectional study...
April 10, 2018: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29652970/-congenital-toxoplasmosis-serology-pcr-parasite-isolation-and-molecular-characterization-of-toxoplasma-gondii
#18
Liliana Carral, Federico Kaufer, Lais Pardini, Ricardo Durlach, Gastón Moré, María C Venturini, Cristina Freuler
Congenital toxoplasmosis diagnosis in the newborn is a very important issue due to the need for early treatment to prevent future sequels. Aim To compare available methods at the institution for the diagnosis of congenital toxoplasmosis. Material and Methods In this study we have evaluated the different diagnostic tests used in 67 congenital exposed newborns, including serological tests, PCR, parasite isolation and molecular characterization. Results The ISAGA IgM and IgA tests showed sensitivity (Se) of 87 and 91%, respectively, and specificity (Sp) of 100%...
2018: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/29650518/secretory-igm-exacerbates-tumor-progression-by-inducing-accumulations-of-mdscs-in-mice
#19
Chih-Hang Anthony Tang, Shiun Chang, Ayumi Hashimoto, Yi-Ju Chen, Chang Won Kang, Anthony R Mato, Juan R Del Valle, Dmitry Gabrilovich, Chih-Chi Andrew Hu
Chronic lymphocytic leukemia cells can secrete immunoglobulin M. However, it is not clear whether secretory IgM (sIgM) plays a role in disease progression. We crossed the Eμ-TCL1 mouse model of CLL, in which the expression of human TCL1 oncogene was driven by the V(H) promoter-Ig(H)-Eμ enhancer, with MD4 mice whose B cells produced B cell receptor (membrane-bound IgM) and sIgM with specificity for hen egg lysozyme (HEL). CLL cells developed in these MD4/Eμ-TCL1 mice reactivated a parental Ig gene allele and secreted IgM, and did not recognize HEL...
April 12, 2018: Cancer Immunology Research
https://www.readbyqxmd.com/read/29648995/cerebrospinal-fluid-free-light-chains-as-diagnostic-biomarker-in-neuroborreliosis
#20
Harald Hegen, Dejan Milosavljevic, Christine Schnabl, Andrea Manowiecka, Janette Walde, Florian Deisenhammer, Stefan Presslauer
BACKGROUND: Free light chains (FLC) have been proposed as diagnostic biomarker in patients with inflammatory central nervous system diseases. The objective of this study was to investigate the diagnostic utility of intrathecal κ- and λ-FLC synthesis in patients with neuroborreliosis. METHODS: κ- and λ-FLC were measured by nephelometry under blinded conditions in cerebrospinal fluid (CSF) and serum sample pairs of 34 patients with neuroborreliosis and compared to a cohort of 420 control patients...
April 12, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
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