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https://www.readbyqxmd.com/read/28091579/impact-of-age-and-vaccination-history-on-long-term-serological-responses-after-symptomatic-b-pertussis-infection-a-high-dimensional-data-analysis
#1
Inonge van Twillert, Axel A Bonačić Marinović, Betsy Kuipers, Jacqueline A M van Gaans-van den Brink, Elisabeth A M Sanders, Cécile A C M van Els
Capturing the complexity and waning patterns of co-occurring immunoglobulin (Ig) responses after clinical B. pertussis infection may help understand how the human host gradually loses protection against whooping cough. We applied bi-exponential modelling to characterise and compare B. pertussis specific serological dynamics in a comprehensive database of IgG, IgG subclass and IgA responses to Ptx, FHA, Prn, Fim2/3 and OMV antigens of (ex-) symptomatic pertussis cases across all age groups. The decay model revealed that antigen type and age group were major factors determining differences in levels and kinetics of Ig (sub) classes...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28086979/b-cell-repertoires-in-hla-sensitized-kidney-transplant-candidates-undergoing-desensitization-therapy
#2
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/28078662/low-immunoglobulin-e-flags-two-distinct-types-of-immune-dysregulation
#3
M Elkuch, V Greiff, C T Berger, M Bouchenaki, T Daikeler, A Bircher, A A Navarini, I Heijnen, M Recher
During the last two decades, hyper-immunoglobulin (Ig)E syndromes have been characterized clinically and molecularly in patients with genetically determined primary immunodeficiencies. However, the detection of low IgE levels, defined here as below detection limit in the routine clinical immunology laboratory, has received little attention. We analysed the association of serum IgA, IgM and IgG levels (including IgG subclasses) with low, normal or high serum IgE levels in patients evaluated in a single-centre out-patient immunodeficiency and allergy clinic...
January 11, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28076511/passive-acquisition-of-anti-staphylococcus-aureus-antibodies-by-newborns-via-transplacental-transfer-and-breastfeeding-regardless-of-maternal-colonization
#4
Maria Isabel Valdomir Nadaf, Laila Lima, Inês Stranieri, Olga Akiko Takano, Magda Carneiro-Sampaio, Patricia Palmeira
OBJECTIVE: To investigate the transmission of anti-Staphylococcus aureus (Sa) IgG, IgG1 and IgG2 via placental transfer and the transfer of IgA via the colostrum according to maternal Sa carrier status at delivery. METHODS: We evaluated anti-Sa IgG, IgG1 and IgG2 in maternal and cord sera and IgA in colostrum from a case (n=49, Sa+) and a control group (n=98, Sa-). RESULTS: Of the 250 parturients analyzed for this study, 49 were nasally colonized with S...
December 1, 2016: Clinics
https://www.readbyqxmd.com/read/28061828/risk-factors-of-progressive-iga-nephropathy-which-progress-to-end-stage-renal-disease-within-ten-years-a-case-control-study
#5
Danhua Shu, Feifei Xu, Zhen Su, Ji Zhang, Chaosheng Chen, Jianna Zhang, Xiaokai Ding, Yinqiu Lv, Haixia Lin, Peipei Huang
BACKGROUND: There were few related studies aiming to severe IgA nephropathy (IgAN) which could progress rapidly to end stage renal disease (ESRD) within ten years. To find valuable clinical or pathological factors and promising precautions is essential. METHODS: A single center case-control study was performed. Fifty ESRD patients with the primary cause of IgAN and a short renal survival time of less than ten years after diagnose were enrolled in the case group...
January 7, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28051174/characterization-of-globulin-storage-proteins-of-a-low-prolamin-cereal-species-in-relation-to-celiac-disease
#6
Gyöngyvér Gell, Krisztina Kovács, Gábor Veres, Ilma R Korponay-Szabó, Angéla Juhász
Brachypodium distachyon, a small annual grass with seed storage globulins as primary protein reserves was used in our study to analyse the toxic nature of non-prolamin seed storage proteins related to celiac disease. The main storage proteins of B. distachyon are the 7S globulin type proteins and the 11S, 12S seed storage globulins similar to oat and rice. Immunoblot analyses using serum samples from celiac disease patients were carried out followed by the identification of immune-responsive proteins using mass spectrometry...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28035353/tgf-%C3%AE-1-mimics-the-effect-of-il-4-on-the-glycosylation-of-iga1-by-downregulating-core-1-%C3%AE-1-3-galactosyltransferase-and-cosmc
#7
Jun Xiao, Manting Wang, Dawei Xiong, Ying Wang, Qiuyue Li, Jing Zhou, Qinkai Chen
The aberrant glycosylation of IgA1 is pivotal in the pathogenesis of IgA nephropathy (IgAN). The aim of the present study was to investigate the effect of transforming growth factor‑β1 (TGF‑β1) on the glycosylation of IgA1 and the associated mechanism. The mRNA levels of core1 β1, 3-galactosyltransferase (C1GalT1) and its molecular chaperone, Cosmc, were analyzed, as was the subsequent O-glycosylation of IgA1, in a human B‑cell line stimulated with TGF‑β1. The IgA1‑positive human B‑cell line was cultured with different concentrations of recombinant human TGF‑β1 (5, 10, 15 and 30 ng/ml)...
February 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28024958/outer-membrane-vesicles-harboring-modified-lipid-a-moiety-augment-the-efficacy-of-an-influenza-vaccine-exhibiting-reduced-endotoxicity-in-a-mouse-model
#8
Tae-Young Lee, Chang-Ung Kim, Eun-Hye Bae, Sang-Hwan Seo, Dae Gwin Jeong, Sun-Woo Yoon, Kyu-Tae Chang, Young Sang Kim, Sang-Hyun Kim, Doo-Jin Kim
Influenza is an acute respiratory disease and a major health problem worldwide. Since mucosal immunity plays a critical role in protection against influenza virus infection, mucosal immunization is considered a promising vaccination route. However, except for live-attenuated vaccines, there are no effective killed or recombinant mucosal influenza vaccines to date. Outer membrane vesicles (OMVs) are nano-sized vesicles produced by gram-negative bacteria, and contain various bacterial components capable of stimulating the immune system of the host...
December 23, 2016: Vaccine
https://www.readbyqxmd.com/read/28004310/high-body-mass-index-and-use-of-fentanyl-iontophoretic-transdermal-system-in-postoperative-pain-management-results-of-a-pooled-analysis-of-six-phase-3-3b-trials
#9
Eugene R Viscusi, Li Ding, J Bradley Phipps, Loretta M Itri, Philip R Schauer
INTRODUCTION: Postoperative pain management can be challenging in patients with a high body mass index (BMI) especially as a result of poor venous access and delayed ambulation that can result in serious complications. Fentanyl iontophoretic transdermal system (ITS) is a needle-free, patient-controlled analgesic method available for use in acute postoperative pain. The primary objective of these analyses was to determine if there were any differences between patients with high BMI (>40 kg/m(2)) and lower BMIs (<30 kg/m(2) and 35-40 kg/m(2)) in terms of efficacy or safety...
December 21, 2016: Pain and Therapy
https://www.readbyqxmd.com/read/27992422/role-of-t3ss-1-sipd-protein-in-protecting-mice-against-non-typhoidal-salmonella-typhimurium
#10
Bakhos Jneid, Karine Moreau, Marc Plaisance, Audrey Rouaix, Julie Dano, Stéphanie Simon
BACKGROUND: Salmonella enterica species are enteric pathogens that cause severe diseases ranging from self-limiting gastroenteritis to enteric fever and sepsis in humans. These infectious diseases are still the major cause of morbidity and mortality in low-income countries, especially in children younger than 5 years and immunocompromised adults. Vaccines targeting typhoidal diseases are already marketed, but none protect against non-typhoidal Salmonella. The existence of multiple non-typhoidal Salmonella serotypes as well as emerging antibiotic resistance highlight the need for development of a broad-spectrum protective vaccine...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27982172/salivary-immunoglobulins-in-individuals-with-common-variable-immunodeficiency
#11
Karin Sá Fernandes, Michella Bezerra Lima, Cíntia de Paula Martins, Maria Cristina Dos-Santos, Fabio Daumas Nunes, Cristina Maria Kokron, Marina Gallottini
Oral manifestations of common variable immunodeficiency (CVID) are rare, have rarely been studied and have given controversial results. There are few data about IgA, IgG, and IgM antibody salivary levels in the literature, and there are few papers about the clinical impact of antibody deficiencies and CVID on the oral health of such patients. The aim of this study was to measure serum and salivary IgA, IgG, and IgM levels in CVID participants and controls, and to associate immunoglobulin levels with caries and periodontal disease...
October 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27977553/the-association-between-fecal-biomarkers-of-environmental-enteropathy-and-rotavirus-vaccine-response-in-nicaraguan-infants
#12
Sylvia Becker-Dreps, Samuel Vilchez, Filemon Bucardo, Erica Twitchell, Wan Suk Choi, Michael G Hudgens, Johan Perez, Lijuan Yuan
BACKGROUND: Environmental enteropathy (EE) is a common intestinal condition among children living in low and middle income countries and is associated with diminished enteric immunity to gastrointestinal pathogens, and possibly, to oral vaccine antigens. The goal of this study was to examine associations between biomarkers of EE and immunogenicity to the pentavalent rotavirus vaccine (RV5). METHODS: Infants were recruited one day before their first RV5 immunization in León, Nicaragua, from public health rosters...
December 12, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27942840/expression-of-an-immunogenic-ltb-based-chimeric-protein-targeting-zaire-ebolavirus-epitopes-from-gp1-in-plant-cells
#13
Regina Ríos-Huerta, Elizabeth Monreal-Escalante, Dania O Govea-Alonso, Carlos Angulo, Sergio Rosales-Mendoza
An antigenic protein targeting two epitopes from the Zaire ebolavirus GP1 protein was expressed in plant cells rendering an antigen capable of inducing humoral responses in mouse when administered subcutaneously or orally. The 2014 Ebola outbreak made clear that new treatments and prophylactic strategies to fight this disease are needed. Since vaccination is an intervention that could achieve the control of this epidemic disease, exploring the production of new low-cost vaccines is a key path to consider; especially in developing countries...
December 9, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27942585/tissue-memory-b-cell-repertoire-analysis-after-alvac-aidsvax-b-e-gp120-immunization-of-rhesus-macaques
#14
Kan Luo, Hua-Xin Liao, Ruijun Zhang, David Easterhoff, Kevin Wiehe, Thaddeus C Gurley, Lawrence C Armand, Ashley A Allen, Tarra A Von Holle, Dawn J Marshall, John F Whitesides, Jamie Pritchett, Andrew Foulger, Giovanna Hernandez, Robert Parks, Krissey E Lloyd, Christina Stolarchuk, Sheetal Sawant, Jessica Peel, Nicole L Yates, Erika Dunford, Sabrina Arora, Amy Wang, Cindy M Bowman, Laura L Sutherland, Richard M Scearce, Shi-Mao Xia, Mattia Bonsignori, Justin Pollara, R Whitney Edwards, Sampa Santra, Norman L Letvin, James Tartaglia, Donald Francis, Faruk Sinangil, Carter Lee, Jaranit Kaewkungwal, Sorachai Nitayaphan, Punnee Pitisuttithum, Supachai Rerks-Ngarm, Nelson L Michael, Jerome H Kim, S Munir Alam, Nathan A Vandergrift, Guido Ferrari, David C Montefiori, Georgia D Tomaras, Barton F Haynes, M Anthony Moody
The ALVAC prime/ALVAC + AIDSVAX B/E boost RV144 vaccine trial induced an estimated 31% efficacy in a low-risk cohort where HIV‑1 exposures were likely at mucosal surfaces. An immune correlates study demonstrated that antibodies targeting the V2 region and in a secondary analysis antibody-dependent cellular cytotoxicity (ADCC), in the presence of low envelope-specific (Env-specific) IgA, correlated with decreased risk of infection. Thus, understanding the B cell repertoires induced by this vaccine in systemic and mucosal compartments are key to understanding the potential protective mechanisms of this vaccine regimen...
December 8, 2016: JCI Insight
https://www.readbyqxmd.com/read/27933180/serum-levels-of-immunoglobulins-and-severity-of-community-acquired-pneumonia
#15
Mari C de la Torre, Pere Torán, Mateu Serra-Prat, Elisabet Palomera, Estel Güell, Ester Vendrell, Joan Carles Yébenes, Antoni Torres, Jordi Almirall
INSTRUCTION: There is evidence of a relationship between severity of infection and inflammatory response of the immune system. The objective is to assess serum levels of immunoglobulins and to establish its relationship with severity of community-acquired pneumonia (CAP) and clinical outcome. METHODS: This was an observational and cross-sectional study in which 3 groups of patients diagnosed with CAP were compared: patients treated in the outpatient setting (n=54), patients requiring in-patient care (hospital ward) (n=173), and patients requiring admission to the intensive care unit (ICU) (n=191)...
2016: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/27916412/kinetics-of-antibody-secreting-cell-and-fecal-iga-responses-after-oral-cholera-vaccination-in-different-age-groups-in-a-cholera-endemic-country
#16
Marjahan Akhtar, Firdausi Qadri, Taufiqur R Bhuiyan, Sarmin Akter, Tanzeem A Rafique, Arifuzzaman Khan, Laila N Islam, Amit Saha, Ann-Mari Svennerholm, Anna Lundgren
Immune responses to oral enteric vaccines in children and infants may be influenced by factors such as age, previous priming with related microorganisms and breast feeding. In this study, we aimed to determine optimal time points to assess immune responses to oral enteric vaccines in different clinical specimens. This was done by investigating antibody secreting cell (ASC) and fecal antibody responses on different days after vaccination using the licensed oral cholera vaccine Dukoral, containing cholera toxin B-subunit (rCTB) and inactivated Vibrio cholerae bacteria, as a model vaccine...
January 5, 2017: Vaccine
https://www.readbyqxmd.com/read/27902749/risk-factors-associated-with-renal-involvement-in-childhood-henoch-sch%C3%A3-nlein-purpura-a-meta-analysis
#17
Han Chan, Yan-Ling Tang, Xiao-Hang Lv, Gao-Fu Zhang, Mo Wang, Hai-Ping Yang, Qiu Li
BACKGROUND AND OBJECTIVE: Henoch-Schönlein purpura (HSP) is an important cause of chronic kidney disease in children. This meta-analysis identified risk factors associated with renal involvement in childhood HSP. METHODS: PubMed, Embase, and Web of Science were searched. The quality of all eligible studies was assessed using the Newcastle-Ottawa scale criteria. An analysis of possible risk factors was conducted to report the odds ratio (OR) and weighted mean difference (WMD)...
2016: PloS One
https://www.readbyqxmd.com/read/27870812/does-breastfeeding-protect-young-infants-from-pertussis-case-control-study-and-immunologic-evaluation
#18
Elisabetta Pandolfi, Francesco Gesualdo, Emanuela Carloni, Alberto Villani, Fabio Midulla, Rita Carsetti, Paola Stefanelli, Giorgio Fedele, Alberto Eugenio Tozzi
BACKGROUND: Pertussis infection can be severe in unvaccinated infants. A case control study was conducted to investigate the potential role of breastfeeding in protecting young, unvaccinated infants from pertussis. METHODS: Hospitalized infants < 6 months with positive RT-PCR for pertussis on nasopharyngeal aspirate were enrolled as cases; healthy controls were enrolled among patients admitted for ultrasound screening. Vaccinated infants were excluded. Sociodemographic, clinical and feeding information were collected...
November 18, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27854317/modulating-the-gut-micro-environment-in-the-treatment-of-intestinal-parasites
#19
REVIEW
Luis Vitetta, Emma Tali Saltzman, Tessa Nikov, Isabelle Ibrahim, Sean Hall
The interactions of micro-organisms cohabitating with Homo sapiens spans millennia, with microbial communities living in a symbiotic relationship with the host. Interacting to regulate and maintain physiological functions and immunological tolerance, the microbial community is able to exert an influence on host health. An example of micro-organisms contributing to an intestinal disease state is exhibited by a biodiverse range of protozoan and bacterial species that damage the intestinal epithelia and are therefore implicated in the symptoms of diarrhea...
November 16, 2016: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/27847281/identification-of-pediatric-patients-with-celiac-disease-based-on-serology-and-a-classification-and-regression-tree-analysis
#20
Anna Ermarth, Matthew Bryce, Stephanie Woodward, Gregory Stoddard, Linda Book, M Kyle Jensen
BACKGROUND & AIMS: Celiac disease is detected using serology and endoscopy analyses. We used multiple statistical analyses of a geographically isolated population in the United States to determine whether a single serum screening can identify individuals with celiac disease. METHODS: We performed a retrospective study of 3555 pediatric patients (18 years old or younger) in the intermountain West region of the United States from January 1, 2008 through September 30, 2013...
November 12, 2016: Clinical Gastroenterology and Hepatology
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